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/* PowerPC64-specific support for 64-bit ELF.
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Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
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2009, 2010, 2011, 2012 Free Software Foundation, Inc.
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Written by Linus Nordberg, Swox AB <info@swox.com>,
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based on elf32-ppc.c by Ian Lance Taylor.
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Largely rewritten by Alan Modra.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
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/* The 64-bit PowerPC ELF ABI may be found at
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http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
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http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
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#include "sysdep.h"
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#include <stdarg.h>
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#include "bfd.h"
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#include "bfdlink.h"
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#include "libbfd.h"
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#include "elf-bfd.h"
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#include "elf/ppc64.h"
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#include "elf64-ppc.h"
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#include "dwarf2.h"
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static bfd_reloc_status_type ppc64_elf_ha_reloc
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(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
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static bfd_reloc_status_type ppc64_elf_branch_reloc
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(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
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static bfd_reloc_status_type ppc64_elf_brtaken_reloc
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(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
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static bfd_reloc_status_type ppc64_elf_sectoff_reloc
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(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
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static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
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(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
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static bfd_reloc_status_type ppc64_elf_toc_reloc
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(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
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static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
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(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
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static bfd_reloc_status_type ppc64_elf_toc64_reloc
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(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
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static bfd_reloc_status_type ppc64_elf_unhandled_reloc
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(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
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static bfd_vma opd_entry_value
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(asection *, bfd_vma, asection **, bfd_vma *);
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#define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
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#define TARGET_LITTLE_NAME "elf64-powerpcle"
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#define TARGET_BIG_SYM bfd_elf64_powerpc_vec
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#define TARGET_BIG_NAME "elf64-powerpc"
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#define ELF_ARCH bfd_arch_powerpc
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#define ELF_TARGET_ID PPC64_ELF_DATA
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#define ELF_MACHINE_CODE EM_PPC64
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#define ELF_MAXPAGESIZE 0x10000
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#define ELF_COMMONPAGESIZE 0x1000
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#define elf_info_to_howto ppc64_elf_info_to_howto
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#define elf_backend_want_got_sym 0
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#define elf_backend_want_plt_sym 0
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#define elf_backend_plt_alignment 3
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#define elf_backend_plt_not_loaded 1
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#define elf_backend_got_header_size 8
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#define elf_backend_can_gc_sections 1
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#define elf_backend_can_refcount 1
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#define elf_backend_rela_normal 1
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#define elf_backend_default_execstack 0
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#define bfd_elf64_mkobject ppc64_elf_mkobject
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#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
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#define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
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#define bfd_elf64_bfd_merge_private_bfd_data _bfd_generic_verify_endian_match
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#define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
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#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
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#define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
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#define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
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#define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
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#define elf_backend_object_p ppc64_elf_object_p
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#define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
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#define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
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#define elf_backend_write_core_note ppc64_elf_write_core_note
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#define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
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#define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
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#define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
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#define elf_backend_check_directives ppc64_elf_process_dot_syms
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#define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
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#define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
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#define elf_backend_check_relocs ppc64_elf_check_relocs
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#define elf_backend_gc_keep ppc64_elf_gc_keep
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#define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
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#define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
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#define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
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#define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
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#define elf_backend_hide_symbol ppc64_elf_hide_symbol
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#define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym
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#define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
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#define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
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#define elf_backend_init_index_section _bfd_elf_init_2_index_sections
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#define elf_backend_action_discarded ppc64_elf_action_discarded
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#define elf_backend_relocate_section ppc64_elf_relocate_section
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#define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
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#define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
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#define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
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#define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
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#define elf_backend_special_sections ppc64_elf_special_sections
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#define elf_backend_post_process_headers _bfd_elf_set_osabi
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/* The name of the dynamic interpreter. This is put in the .interp
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section. */
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#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
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/* The size in bytes of an entry in the procedure linkage table. */
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#define PLT_ENTRY_SIZE 24
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/* The initial size of the plt reserved for the dynamic linker. */
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#define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
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/* TOC base pointers offset from start of TOC. */
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#define TOC_BASE_OFF 0x8000
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/* Offset of tp and dtp pointers from start of TLS block. */
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#define TP_OFFSET 0x7000
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#define DTP_OFFSET 0x8000
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/* .plt call stub instructions. The normal stub is like this, but
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sometimes the .plt entry crosses a 64k boundary and we need to
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insert an addi to adjust r12. */
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#define PLT_CALL_STUB_SIZE (7*4)
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#define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
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#define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
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#define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
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#define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
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#define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
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/* ld %r11,xxx+16@l(%r12) */
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#define BCTR 0x4e800420 /* bctr */
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#define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
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#define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
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#define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
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#define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
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#define XOR_R11_R11_R11 0x7d6b5a78 /* xor %r11,%r11,%r11 */
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#define ADD_R12_R12_R11 0x7d8c5a14 /* add %r12,%r12,%r11 */
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#define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */
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#define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */
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#define BNECTR 0x4ca20420 /* bnectr+ */
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#define BNECTR_P4 0x4ce20420 /* bnectr+ */
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#define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
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#define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
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#define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
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/* glink call stub instructions. We enter with the index in R0. */
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#define GLINK_CALL_STUB_SIZE (16*4)
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/* 0: */
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/* .quad plt0-1f */
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/* __glink: */
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#define MFLR_R12 0x7d8802a6 /* mflr %12 */
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#define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
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/* 1: */
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#define MFLR_R11 0x7d6802a6 /* mflr %11 */
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#define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
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#define MTLR_R12 0x7d8803a6 /* mtlr %12 */
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#define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
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/* ld %11,0(%12) */
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/* ld %2,8(%12) */
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/* mtctr %11 */
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/* ld %11,16(%12) */
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/* bctr */
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| 186 |
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/* Pad with this. */
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#define NOP 0x60000000
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| 189 |
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/* Some other nops. */
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#define CROR_151515 0x4def7b82
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#define CROR_313131 0x4ffffb82
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| 192 |
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| 193 |
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/* .glink entries for the first 32k functions are two instructions. */
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#define LI_R0_0 0x38000000 /* li %r0,0 */
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#define B_DOT 0x48000000 /* b . */
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/* After that, we need two instructions to load the index, followed by
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a branch. */
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#define LIS_R0_0 0x3c000000 /* lis %r0,0 */
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#define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
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/* Instructions used by the save and restore reg functions. */
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#define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
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#define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
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#define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
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#define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
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#define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
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#define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
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#define LI_R12_0 0x39800000 /* li %r12,0 */
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#define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
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#define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
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#define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
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#define BLR 0x4e800020 /* blr */
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| 215 |
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/* Since .opd is an array of descriptors and each entry will end up
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| 216 |
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with identical R_PPC64_RELATIVE relocs, there is really no need to
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| 217 |
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propagate .opd relocs; The dynamic linker should be taught to
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| 218 |
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relocate .opd without reloc entries. */
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| 219 |
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#ifndef NO_OPD_RELOCS
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| 220 |
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#define NO_OPD_RELOCS 0
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| 221 |
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#endif
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| 222 |
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| 223 |
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#define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
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| 224 |
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| 225 |
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/* Relocation HOWTO's. */
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| 226 |
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static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max];
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| 227 |
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| 228 |
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static reloc_howto_type ppc64_elf_howto_raw[] = {
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| 229 |
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/* This reloc does nothing. */
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HOWTO (R_PPC64_NONE, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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| 234 |
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FALSE, /* pc_relative */
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0, /* bitpos */
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| 236 |
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complain_overflow_dont, /* complain_on_overflow */
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| 237 |
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bfd_elf_generic_reloc, /* special_function */
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| 238 |
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"R_PPC64_NONE", /* name */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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| 241 |
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0, /* dst_mask */
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| 242 |
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FALSE), /* pcrel_offset */
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| 243 |
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| 244 |
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/* A standard 32 bit relocation. */
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| 245 |
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HOWTO (R_PPC64_ADDR32, /* type */
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0, /* rightshift */
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| 247 |
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2, /* size (0 = byte, 1 = short, 2 = long) */
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| 248 |
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32, /* bitsize */
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| 249 |
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FALSE, /* pc_relative */
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| 250 |
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0, /* bitpos */
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| 251 |
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complain_overflow_bitfield, /* complain_on_overflow */
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| 252 |
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bfd_elf_generic_reloc, /* special_function */
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| 253 |
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"R_PPC64_ADDR32", /* name */
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| 254 |
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FALSE, /* partial_inplace */
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0, /* src_mask */
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| 256 |
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0xffffffff, /* dst_mask */
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| 257 |
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FALSE), /* pcrel_offset */
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| 258 |
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| 259 |
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/* An absolute 26 bit branch; the lower two bits must be zero.
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| 260 |
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FIXME: we don't check that, we just clear them. */
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| 261 |
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HOWTO (R_PPC64_ADDR24, /* type */
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| 262 |
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0, /* rightshift */
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| 263 |
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2, /* size (0 = byte, 1 = short, 2 = long) */
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| 264 |
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26, /* bitsize */
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| 265 |
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FALSE, /* pc_relative */
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| 266 |
|
|
0, /* bitpos */
|
| 267 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 268 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 269 |
|
|
"R_PPC64_ADDR24", /* name */
|
| 270 |
|
|
FALSE, /* partial_inplace */
|
| 271 |
|
|
0, /* src_mask */
|
| 272 |
|
|
0x03fffffc, /* dst_mask */
|
| 273 |
|
|
FALSE), /* pcrel_offset */
|
| 274 |
|
|
|
| 275 |
|
|
/* A standard 16 bit relocation. */
|
| 276 |
|
|
HOWTO (R_PPC64_ADDR16, /* type */
|
| 277 |
|
|
0, /* rightshift */
|
| 278 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 279 |
|
|
16, /* bitsize */
|
| 280 |
|
|
FALSE, /* pc_relative */
|
| 281 |
|
|
0, /* bitpos */
|
| 282 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 283 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 284 |
|
|
"R_PPC64_ADDR16", /* name */
|
| 285 |
|
|
FALSE, /* partial_inplace */
|
| 286 |
|
|
0, /* src_mask */
|
| 287 |
|
|
0xffff, /* dst_mask */
|
| 288 |
|
|
FALSE), /* pcrel_offset */
|
| 289 |
|
|
|
| 290 |
|
|
/* A 16 bit relocation without overflow. */
|
| 291 |
|
|
HOWTO (R_PPC64_ADDR16_LO, /* type */
|
| 292 |
|
|
0, /* rightshift */
|
| 293 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 294 |
|
|
16, /* bitsize */
|
| 295 |
|
|
FALSE, /* pc_relative */
|
| 296 |
|
|
0, /* bitpos */
|
| 297 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 298 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 299 |
|
|
"R_PPC64_ADDR16_LO", /* name */
|
| 300 |
|
|
FALSE, /* partial_inplace */
|
| 301 |
|
|
0, /* src_mask */
|
| 302 |
|
|
0xffff, /* dst_mask */
|
| 303 |
|
|
FALSE), /* pcrel_offset */
|
| 304 |
|
|
|
| 305 |
|
|
/* Bits 16-31 of an address. */
|
| 306 |
|
|
HOWTO (R_PPC64_ADDR16_HI, /* type */
|
| 307 |
|
|
16, /* rightshift */
|
| 308 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 309 |
|
|
16, /* bitsize */
|
| 310 |
|
|
FALSE, /* pc_relative */
|
| 311 |
|
|
0, /* bitpos */
|
| 312 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 313 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 314 |
|
|
"R_PPC64_ADDR16_HI", /* name */
|
| 315 |
|
|
FALSE, /* partial_inplace */
|
| 316 |
|
|
0, /* src_mask */
|
| 317 |
|
|
0xffff, /* dst_mask */
|
| 318 |
|
|
FALSE), /* pcrel_offset */
|
| 319 |
|
|
|
| 320 |
|
|
/* Bits 16-31 of an address, plus 1 if the contents of the low 16
|
| 321 |
|
|
bits, treated as a signed number, is negative. */
|
| 322 |
|
|
HOWTO (R_PPC64_ADDR16_HA, /* type */
|
| 323 |
|
|
16, /* rightshift */
|
| 324 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 325 |
|
|
16, /* bitsize */
|
| 326 |
|
|
FALSE, /* pc_relative */
|
| 327 |
|
|
0, /* bitpos */
|
| 328 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 329 |
|
|
ppc64_elf_ha_reloc, /* special_function */
|
| 330 |
|
|
"R_PPC64_ADDR16_HA", /* name */
|
| 331 |
|
|
FALSE, /* partial_inplace */
|
| 332 |
|
|
0, /* src_mask */
|
| 333 |
|
|
0xffff, /* dst_mask */
|
| 334 |
|
|
FALSE), /* pcrel_offset */
|
| 335 |
|
|
|
| 336 |
|
|
/* An absolute 16 bit branch; the lower two bits must be zero.
|
| 337 |
|
|
FIXME: we don't check that, we just clear them. */
|
| 338 |
|
|
HOWTO (R_PPC64_ADDR14, /* type */
|
| 339 |
|
|
0, /* rightshift */
|
| 340 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 341 |
|
|
16, /* bitsize */
|
| 342 |
|
|
FALSE, /* pc_relative */
|
| 343 |
|
|
0, /* bitpos */
|
| 344 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 345 |
|
|
ppc64_elf_branch_reloc, /* special_function */
|
| 346 |
|
|
"R_PPC64_ADDR14", /* name */
|
| 347 |
|
|
FALSE, /* partial_inplace */
|
| 348 |
|
|
0, /* src_mask */
|
| 349 |
|
|
0x0000fffc, /* dst_mask */
|
| 350 |
|
|
FALSE), /* pcrel_offset */
|
| 351 |
|
|
|
| 352 |
|
|
/* An absolute 16 bit branch, for which bit 10 should be set to
|
| 353 |
|
|
indicate that the branch is expected to be taken. The lower two
|
| 354 |
|
|
bits must be zero. */
|
| 355 |
|
|
HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
|
| 356 |
|
|
0, /* rightshift */
|
| 357 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 358 |
|
|
16, /* bitsize */
|
| 359 |
|
|
FALSE, /* pc_relative */
|
| 360 |
|
|
0, /* bitpos */
|
| 361 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 362 |
|
|
ppc64_elf_brtaken_reloc, /* special_function */
|
| 363 |
|
|
"R_PPC64_ADDR14_BRTAKEN",/* name */
|
| 364 |
|
|
FALSE, /* partial_inplace */
|
| 365 |
|
|
0, /* src_mask */
|
| 366 |
|
|
0x0000fffc, /* dst_mask */
|
| 367 |
|
|
FALSE), /* pcrel_offset */
|
| 368 |
|
|
|
| 369 |
|
|
/* An absolute 16 bit branch, for which bit 10 should be set to
|
| 370 |
|
|
indicate that the branch is not expected to be taken. The lower
|
| 371 |
|
|
two bits must be zero. */
|
| 372 |
|
|
HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
|
| 373 |
|
|
0, /* rightshift */
|
| 374 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 375 |
|
|
16, /* bitsize */
|
| 376 |
|
|
FALSE, /* pc_relative */
|
| 377 |
|
|
0, /* bitpos */
|
| 378 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 379 |
|
|
ppc64_elf_brtaken_reloc, /* special_function */
|
| 380 |
|
|
"R_PPC64_ADDR14_BRNTAKEN",/* name */
|
| 381 |
|
|
FALSE, /* partial_inplace */
|
| 382 |
|
|
0, /* src_mask */
|
| 383 |
|
|
0x0000fffc, /* dst_mask */
|
| 384 |
|
|
FALSE), /* pcrel_offset */
|
| 385 |
|
|
|
| 386 |
|
|
/* A relative 26 bit branch; the lower two bits must be zero. */
|
| 387 |
|
|
HOWTO (R_PPC64_REL24, /* type */
|
| 388 |
|
|
0, /* rightshift */
|
| 389 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 390 |
|
|
26, /* bitsize */
|
| 391 |
|
|
TRUE, /* pc_relative */
|
| 392 |
|
|
0, /* bitpos */
|
| 393 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 394 |
|
|
ppc64_elf_branch_reloc, /* special_function */
|
| 395 |
|
|
"R_PPC64_REL24", /* name */
|
| 396 |
|
|
FALSE, /* partial_inplace */
|
| 397 |
|
|
0, /* src_mask */
|
| 398 |
|
|
0x03fffffc, /* dst_mask */
|
| 399 |
|
|
TRUE), /* pcrel_offset */
|
| 400 |
|
|
|
| 401 |
|
|
/* A relative 16 bit branch; the lower two bits must be zero. */
|
| 402 |
|
|
HOWTO (R_PPC64_REL14, /* type */
|
| 403 |
|
|
0, /* rightshift */
|
| 404 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 405 |
|
|
16, /* bitsize */
|
| 406 |
|
|
TRUE, /* pc_relative */
|
| 407 |
|
|
0, /* bitpos */
|
| 408 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 409 |
|
|
ppc64_elf_branch_reloc, /* special_function */
|
| 410 |
|
|
"R_PPC64_REL14", /* name */
|
| 411 |
|
|
FALSE, /* partial_inplace */
|
| 412 |
|
|
0, /* src_mask */
|
| 413 |
|
|
0x0000fffc, /* dst_mask */
|
| 414 |
|
|
TRUE), /* pcrel_offset */
|
| 415 |
|
|
|
| 416 |
|
|
/* A relative 16 bit branch. Bit 10 should be set to indicate that
|
| 417 |
|
|
the branch is expected to be taken. The lower two bits must be
|
| 418 |
|
|
zero. */
|
| 419 |
|
|
HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
|
| 420 |
|
|
0, /* rightshift */
|
| 421 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 422 |
|
|
16, /* bitsize */
|
| 423 |
|
|
TRUE, /* pc_relative */
|
| 424 |
|
|
0, /* bitpos */
|
| 425 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 426 |
|
|
ppc64_elf_brtaken_reloc, /* special_function */
|
| 427 |
|
|
"R_PPC64_REL14_BRTAKEN", /* name */
|
| 428 |
|
|
FALSE, /* partial_inplace */
|
| 429 |
|
|
0, /* src_mask */
|
| 430 |
|
|
0x0000fffc, /* dst_mask */
|
| 431 |
|
|
TRUE), /* pcrel_offset */
|
| 432 |
|
|
|
| 433 |
|
|
/* A relative 16 bit branch. Bit 10 should be set to indicate that
|
| 434 |
|
|
the branch is not expected to be taken. The lower two bits must
|
| 435 |
|
|
be zero. */
|
| 436 |
|
|
HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
|
| 437 |
|
|
0, /* rightshift */
|
| 438 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 439 |
|
|
16, /* bitsize */
|
| 440 |
|
|
TRUE, /* pc_relative */
|
| 441 |
|
|
0, /* bitpos */
|
| 442 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 443 |
|
|
ppc64_elf_brtaken_reloc, /* special_function */
|
| 444 |
|
|
"R_PPC64_REL14_BRNTAKEN",/* name */
|
| 445 |
|
|
FALSE, /* partial_inplace */
|
| 446 |
|
|
0, /* src_mask */
|
| 447 |
|
|
0x0000fffc, /* dst_mask */
|
| 448 |
|
|
TRUE), /* pcrel_offset */
|
| 449 |
|
|
|
| 450 |
|
|
/* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
|
| 451 |
|
|
symbol. */
|
| 452 |
|
|
HOWTO (R_PPC64_GOT16, /* type */
|
| 453 |
|
|
0, /* rightshift */
|
| 454 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 455 |
|
|
16, /* bitsize */
|
| 456 |
|
|
FALSE, /* pc_relative */
|
| 457 |
|
|
0, /* bitpos */
|
| 458 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 459 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 460 |
|
|
"R_PPC64_GOT16", /* name */
|
| 461 |
|
|
FALSE, /* partial_inplace */
|
| 462 |
|
|
0, /* src_mask */
|
| 463 |
|
|
0xffff, /* dst_mask */
|
| 464 |
|
|
FALSE), /* pcrel_offset */
|
| 465 |
|
|
|
| 466 |
|
|
/* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
|
| 467 |
|
|
the symbol. */
|
| 468 |
|
|
HOWTO (R_PPC64_GOT16_LO, /* type */
|
| 469 |
|
|
0, /* rightshift */
|
| 470 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 471 |
|
|
16, /* bitsize */
|
| 472 |
|
|
FALSE, /* pc_relative */
|
| 473 |
|
|
0, /* bitpos */
|
| 474 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 475 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 476 |
|
|
"R_PPC64_GOT16_LO", /* name */
|
| 477 |
|
|
FALSE, /* partial_inplace */
|
| 478 |
|
|
0, /* src_mask */
|
| 479 |
|
|
0xffff, /* dst_mask */
|
| 480 |
|
|
FALSE), /* pcrel_offset */
|
| 481 |
|
|
|
| 482 |
|
|
/* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
|
| 483 |
|
|
the symbol. */
|
| 484 |
|
|
HOWTO (R_PPC64_GOT16_HI, /* type */
|
| 485 |
|
|
16, /* rightshift */
|
| 486 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 487 |
|
|
16, /* bitsize */
|
| 488 |
|
|
FALSE, /* pc_relative */
|
| 489 |
|
|
0, /* bitpos */
|
| 490 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 491 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 492 |
|
|
"R_PPC64_GOT16_HI", /* name */
|
| 493 |
|
|
FALSE, /* partial_inplace */
|
| 494 |
|
|
0, /* src_mask */
|
| 495 |
|
|
0xffff, /* dst_mask */
|
| 496 |
|
|
FALSE), /* pcrel_offset */
|
| 497 |
|
|
|
| 498 |
|
|
/* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
|
| 499 |
|
|
the symbol. */
|
| 500 |
|
|
HOWTO (R_PPC64_GOT16_HA, /* type */
|
| 501 |
|
|
16, /* rightshift */
|
| 502 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 503 |
|
|
16, /* bitsize */
|
| 504 |
|
|
FALSE, /* pc_relative */
|
| 505 |
|
|
0, /* bitpos */
|
| 506 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 507 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 508 |
|
|
"R_PPC64_GOT16_HA", /* name */
|
| 509 |
|
|
FALSE, /* partial_inplace */
|
| 510 |
|
|
0, /* src_mask */
|
| 511 |
|
|
0xffff, /* dst_mask */
|
| 512 |
|
|
FALSE), /* pcrel_offset */
|
| 513 |
|
|
|
| 514 |
|
|
/* This is used only by the dynamic linker. The symbol should exist
|
| 515 |
|
|
both in the object being run and in some shared library. The
|
| 516 |
|
|
dynamic linker copies the data addressed by the symbol from the
|
| 517 |
|
|
shared library into the object, because the object being
|
| 518 |
|
|
run has to have the data at some particular address. */
|
| 519 |
|
|
HOWTO (R_PPC64_COPY, /* type */
|
| 520 |
|
|
0, /* rightshift */
|
| 521 |
|
|
0, /* this one is variable size */
|
| 522 |
|
|
0, /* bitsize */
|
| 523 |
|
|
FALSE, /* pc_relative */
|
| 524 |
|
|
0, /* bitpos */
|
| 525 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 526 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 527 |
|
|
"R_PPC64_COPY", /* name */
|
| 528 |
|
|
FALSE, /* partial_inplace */
|
| 529 |
|
|
0, /* src_mask */
|
| 530 |
|
|
0, /* dst_mask */
|
| 531 |
|
|
FALSE), /* pcrel_offset */
|
| 532 |
|
|
|
| 533 |
|
|
/* Like R_PPC64_ADDR64, but used when setting global offset table
|
| 534 |
|
|
entries. */
|
| 535 |
|
|
HOWTO (R_PPC64_GLOB_DAT, /* type */
|
| 536 |
|
|
0, /* rightshift */
|
| 537 |
|
|
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
|
| 538 |
|
|
64, /* bitsize */
|
| 539 |
|
|
FALSE, /* pc_relative */
|
| 540 |
|
|
0, /* bitpos */
|
| 541 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 542 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 543 |
|
|
"R_PPC64_GLOB_DAT", /* name */
|
| 544 |
|
|
FALSE, /* partial_inplace */
|
| 545 |
|
|
0, /* src_mask */
|
| 546 |
|
|
ONES (64), /* dst_mask */
|
| 547 |
|
|
FALSE), /* pcrel_offset */
|
| 548 |
|
|
|
| 549 |
|
|
/* Created by the link editor. Marks a procedure linkage table
|
| 550 |
|
|
entry for a symbol. */
|
| 551 |
|
|
HOWTO (R_PPC64_JMP_SLOT, /* type */
|
| 552 |
|
|
0, /* rightshift */
|
| 553 |
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
| 554 |
|
|
0, /* bitsize */
|
| 555 |
|
|
FALSE, /* pc_relative */
|
| 556 |
|
|
0, /* bitpos */
|
| 557 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 558 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 559 |
|
|
"R_PPC64_JMP_SLOT", /* name */
|
| 560 |
|
|
FALSE, /* partial_inplace */
|
| 561 |
|
|
0, /* src_mask */
|
| 562 |
|
|
0, /* dst_mask */
|
| 563 |
|
|
FALSE), /* pcrel_offset */
|
| 564 |
|
|
|
| 565 |
|
|
/* Used only by the dynamic linker. When the object is run, this
|
| 566 |
|
|
doubleword64 is set to the load address of the object, plus the
|
| 567 |
|
|
addend. */
|
| 568 |
|
|
HOWTO (R_PPC64_RELATIVE, /* type */
|
| 569 |
|
|
0, /* rightshift */
|
| 570 |
|
|
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
|
| 571 |
|
|
64, /* bitsize */
|
| 572 |
|
|
FALSE, /* pc_relative */
|
| 573 |
|
|
0, /* bitpos */
|
| 574 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 575 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 576 |
|
|
"R_PPC64_RELATIVE", /* name */
|
| 577 |
|
|
FALSE, /* partial_inplace */
|
| 578 |
|
|
0, /* src_mask */
|
| 579 |
|
|
ONES (64), /* dst_mask */
|
| 580 |
|
|
FALSE), /* pcrel_offset */
|
| 581 |
|
|
|
| 582 |
|
|
/* Like R_PPC64_ADDR32, but may be unaligned. */
|
| 583 |
|
|
HOWTO (R_PPC64_UADDR32, /* type */
|
| 584 |
|
|
0, /* rightshift */
|
| 585 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 586 |
|
|
32, /* bitsize */
|
| 587 |
|
|
FALSE, /* pc_relative */
|
| 588 |
|
|
0, /* bitpos */
|
| 589 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 590 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 591 |
|
|
"R_PPC64_UADDR32", /* name */
|
| 592 |
|
|
FALSE, /* partial_inplace */
|
| 593 |
|
|
0, /* src_mask */
|
| 594 |
|
|
0xffffffff, /* dst_mask */
|
| 595 |
|
|
FALSE), /* pcrel_offset */
|
| 596 |
|
|
|
| 597 |
|
|
/* Like R_PPC64_ADDR16, but may be unaligned. */
|
| 598 |
|
|
HOWTO (R_PPC64_UADDR16, /* type */
|
| 599 |
|
|
0, /* rightshift */
|
| 600 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 601 |
|
|
16, /* bitsize */
|
| 602 |
|
|
FALSE, /* pc_relative */
|
| 603 |
|
|
0, /* bitpos */
|
| 604 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 605 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 606 |
|
|
"R_PPC64_UADDR16", /* name */
|
| 607 |
|
|
FALSE, /* partial_inplace */
|
| 608 |
|
|
0, /* src_mask */
|
| 609 |
|
|
0xffff, /* dst_mask */
|
| 610 |
|
|
FALSE), /* pcrel_offset */
|
| 611 |
|
|
|
| 612 |
|
|
/* 32-bit PC relative. */
|
| 613 |
|
|
HOWTO (R_PPC64_REL32, /* type */
|
| 614 |
|
|
0, /* rightshift */
|
| 615 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 616 |
|
|
32, /* bitsize */
|
| 617 |
|
|
TRUE, /* pc_relative */
|
| 618 |
|
|
0, /* bitpos */
|
| 619 |
|
|
/* FIXME: Verify. Was complain_overflow_bitfield. */
|
| 620 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 621 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 622 |
|
|
"R_PPC64_REL32", /* name */
|
| 623 |
|
|
FALSE, /* partial_inplace */
|
| 624 |
|
|
0, /* src_mask */
|
| 625 |
|
|
0xffffffff, /* dst_mask */
|
| 626 |
|
|
TRUE), /* pcrel_offset */
|
| 627 |
|
|
|
| 628 |
|
|
/* 32-bit relocation to the symbol's procedure linkage table. */
|
| 629 |
|
|
HOWTO (R_PPC64_PLT32, /* type */
|
| 630 |
|
|
0, /* rightshift */
|
| 631 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 632 |
|
|
32, /* bitsize */
|
| 633 |
|
|
FALSE, /* pc_relative */
|
| 634 |
|
|
0, /* bitpos */
|
| 635 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 636 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 637 |
|
|
"R_PPC64_PLT32", /* name */
|
| 638 |
|
|
FALSE, /* partial_inplace */
|
| 639 |
|
|
0, /* src_mask */
|
| 640 |
|
|
0xffffffff, /* dst_mask */
|
| 641 |
|
|
FALSE), /* pcrel_offset */
|
| 642 |
|
|
|
| 643 |
|
|
/* 32-bit PC relative relocation to the symbol's procedure linkage table.
|
| 644 |
|
|
FIXME: R_PPC64_PLTREL32 not supported. */
|
| 645 |
|
|
HOWTO (R_PPC64_PLTREL32, /* type */
|
| 646 |
|
|
0, /* rightshift */
|
| 647 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 648 |
|
|
32, /* bitsize */
|
| 649 |
|
|
TRUE, /* pc_relative */
|
| 650 |
|
|
0, /* bitpos */
|
| 651 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 652 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 653 |
|
|
"R_PPC64_PLTREL32", /* name */
|
| 654 |
|
|
FALSE, /* partial_inplace */
|
| 655 |
|
|
0, /* src_mask */
|
| 656 |
|
|
0xffffffff, /* dst_mask */
|
| 657 |
|
|
TRUE), /* pcrel_offset */
|
| 658 |
|
|
|
| 659 |
|
|
/* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
|
| 660 |
|
|
the symbol. */
|
| 661 |
|
|
HOWTO (R_PPC64_PLT16_LO, /* type */
|
| 662 |
|
|
0, /* rightshift */
|
| 663 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 664 |
|
|
16, /* bitsize */
|
| 665 |
|
|
FALSE, /* pc_relative */
|
| 666 |
|
|
0, /* bitpos */
|
| 667 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 668 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 669 |
|
|
"R_PPC64_PLT16_LO", /* name */
|
| 670 |
|
|
FALSE, /* partial_inplace */
|
| 671 |
|
|
0, /* src_mask */
|
| 672 |
|
|
0xffff, /* dst_mask */
|
| 673 |
|
|
FALSE), /* pcrel_offset */
|
| 674 |
|
|
|
| 675 |
|
|
/* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
|
| 676 |
|
|
the symbol. */
|
| 677 |
|
|
HOWTO (R_PPC64_PLT16_HI, /* type */
|
| 678 |
|
|
16, /* rightshift */
|
| 679 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 680 |
|
|
16, /* bitsize */
|
| 681 |
|
|
FALSE, /* pc_relative */
|
| 682 |
|
|
0, /* bitpos */
|
| 683 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 684 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 685 |
|
|
"R_PPC64_PLT16_HI", /* name */
|
| 686 |
|
|
FALSE, /* partial_inplace */
|
| 687 |
|
|
0, /* src_mask */
|
| 688 |
|
|
0xffff, /* dst_mask */
|
| 689 |
|
|
FALSE), /* pcrel_offset */
|
| 690 |
|
|
|
| 691 |
|
|
/* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
|
| 692 |
|
|
the symbol. */
|
| 693 |
|
|
HOWTO (R_PPC64_PLT16_HA, /* type */
|
| 694 |
|
|
16, /* rightshift */
|
| 695 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 696 |
|
|
16, /* bitsize */
|
| 697 |
|
|
FALSE, /* pc_relative */
|
| 698 |
|
|
0, /* bitpos */
|
| 699 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 700 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 701 |
|
|
"R_PPC64_PLT16_HA", /* name */
|
| 702 |
|
|
FALSE, /* partial_inplace */
|
| 703 |
|
|
0, /* src_mask */
|
| 704 |
|
|
0xffff, /* dst_mask */
|
| 705 |
|
|
FALSE), /* pcrel_offset */
|
| 706 |
|
|
|
| 707 |
|
|
/* 16-bit section relative relocation. */
|
| 708 |
|
|
HOWTO (R_PPC64_SECTOFF, /* type */
|
| 709 |
|
|
0, /* rightshift */
|
| 710 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 711 |
|
|
16, /* bitsize */
|
| 712 |
|
|
FALSE, /* pc_relative */
|
| 713 |
|
|
0, /* bitpos */
|
| 714 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 715 |
|
|
ppc64_elf_sectoff_reloc, /* special_function */
|
| 716 |
|
|
"R_PPC64_SECTOFF", /* name */
|
| 717 |
|
|
FALSE, /* partial_inplace */
|
| 718 |
|
|
0, /* src_mask */
|
| 719 |
|
|
0xffff, /* dst_mask */
|
| 720 |
|
|
FALSE), /* pcrel_offset */
|
| 721 |
|
|
|
| 722 |
|
|
/* Like R_PPC64_SECTOFF, but no overflow warning. */
|
| 723 |
|
|
HOWTO (R_PPC64_SECTOFF_LO, /* type */
|
| 724 |
|
|
0, /* rightshift */
|
| 725 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 726 |
|
|
16, /* bitsize */
|
| 727 |
|
|
FALSE, /* pc_relative */
|
| 728 |
|
|
0, /* bitpos */
|
| 729 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 730 |
|
|
ppc64_elf_sectoff_reloc, /* special_function */
|
| 731 |
|
|
"R_PPC64_SECTOFF_LO", /* name */
|
| 732 |
|
|
FALSE, /* partial_inplace */
|
| 733 |
|
|
0, /* src_mask */
|
| 734 |
|
|
0xffff, /* dst_mask */
|
| 735 |
|
|
FALSE), /* pcrel_offset */
|
| 736 |
|
|
|
| 737 |
|
|
/* 16-bit upper half section relative relocation. */
|
| 738 |
|
|
HOWTO (R_PPC64_SECTOFF_HI, /* type */
|
| 739 |
|
|
16, /* rightshift */
|
| 740 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 741 |
|
|
16, /* bitsize */
|
| 742 |
|
|
FALSE, /* pc_relative */
|
| 743 |
|
|
0, /* bitpos */
|
| 744 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 745 |
|
|
ppc64_elf_sectoff_reloc, /* special_function */
|
| 746 |
|
|
"R_PPC64_SECTOFF_HI", /* name */
|
| 747 |
|
|
FALSE, /* partial_inplace */
|
| 748 |
|
|
0, /* src_mask */
|
| 749 |
|
|
0xffff, /* dst_mask */
|
| 750 |
|
|
FALSE), /* pcrel_offset */
|
| 751 |
|
|
|
| 752 |
|
|
/* 16-bit upper half adjusted section relative relocation. */
|
| 753 |
|
|
HOWTO (R_PPC64_SECTOFF_HA, /* type */
|
| 754 |
|
|
16, /* rightshift */
|
| 755 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 756 |
|
|
16, /* bitsize */
|
| 757 |
|
|
FALSE, /* pc_relative */
|
| 758 |
|
|
0, /* bitpos */
|
| 759 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 760 |
|
|
ppc64_elf_sectoff_ha_reloc, /* special_function */
|
| 761 |
|
|
"R_PPC64_SECTOFF_HA", /* name */
|
| 762 |
|
|
FALSE, /* partial_inplace */
|
| 763 |
|
|
0, /* src_mask */
|
| 764 |
|
|
0xffff, /* dst_mask */
|
| 765 |
|
|
FALSE), /* pcrel_offset */
|
| 766 |
|
|
|
| 767 |
|
|
/* Like R_PPC64_REL24 without touching the two least significant bits. */
|
| 768 |
|
|
HOWTO (R_PPC64_REL30, /* type */
|
| 769 |
|
|
2, /* rightshift */
|
| 770 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 771 |
|
|
30, /* bitsize */
|
| 772 |
|
|
TRUE, /* pc_relative */
|
| 773 |
|
|
0, /* bitpos */
|
| 774 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 775 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 776 |
|
|
"R_PPC64_REL30", /* name */
|
| 777 |
|
|
FALSE, /* partial_inplace */
|
| 778 |
|
|
0, /* src_mask */
|
| 779 |
|
|
0xfffffffc, /* dst_mask */
|
| 780 |
|
|
TRUE), /* pcrel_offset */
|
| 781 |
|
|
|
| 782 |
|
|
/* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
|
| 783 |
|
|
|
| 784 |
|
|
/* A standard 64-bit relocation. */
|
| 785 |
|
|
HOWTO (R_PPC64_ADDR64, /* type */
|
| 786 |
|
|
0, /* rightshift */
|
| 787 |
|
|
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
|
| 788 |
|
|
64, /* bitsize */
|
| 789 |
|
|
FALSE, /* pc_relative */
|
| 790 |
|
|
0, /* bitpos */
|
| 791 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 792 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 793 |
|
|
"R_PPC64_ADDR64", /* name */
|
| 794 |
|
|
FALSE, /* partial_inplace */
|
| 795 |
|
|
0, /* src_mask */
|
| 796 |
|
|
ONES (64), /* dst_mask */
|
| 797 |
|
|
FALSE), /* pcrel_offset */
|
| 798 |
|
|
|
| 799 |
|
|
/* The bits 32-47 of an address. */
|
| 800 |
|
|
HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
|
| 801 |
|
|
32, /* rightshift */
|
| 802 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 803 |
|
|
16, /* bitsize */
|
| 804 |
|
|
FALSE, /* pc_relative */
|
| 805 |
|
|
0, /* bitpos */
|
| 806 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 807 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 808 |
|
|
"R_PPC64_ADDR16_HIGHER", /* name */
|
| 809 |
|
|
FALSE, /* partial_inplace */
|
| 810 |
|
|
0, /* src_mask */
|
| 811 |
|
|
0xffff, /* dst_mask */
|
| 812 |
|
|
FALSE), /* pcrel_offset */
|
| 813 |
|
|
|
| 814 |
|
|
/* The bits 32-47 of an address, plus 1 if the contents of the low
|
| 815 |
|
|
16 bits, treated as a signed number, is negative. */
|
| 816 |
|
|
HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
|
| 817 |
|
|
32, /* rightshift */
|
| 818 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 819 |
|
|
16, /* bitsize */
|
| 820 |
|
|
FALSE, /* pc_relative */
|
| 821 |
|
|
0, /* bitpos */
|
| 822 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 823 |
|
|
ppc64_elf_ha_reloc, /* special_function */
|
| 824 |
|
|
"R_PPC64_ADDR16_HIGHERA", /* name */
|
| 825 |
|
|
FALSE, /* partial_inplace */
|
| 826 |
|
|
0, /* src_mask */
|
| 827 |
|
|
0xffff, /* dst_mask */
|
| 828 |
|
|
FALSE), /* pcrel_offset */
|
| 829 |
|
|
|
| 830 |
|
|
/* The bits 48-63 of an address. */
|
| 831 |
|
|
HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
|
| 832 |
|
|
48, /* rightshift */
|
| 833 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 834 |
|
|
16, /* bitsize */
|
| 835 |
|
|
FALSE, /* pc_relative */
|
| 836 |
|
|
0, /* bitpos */
|
| 837 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 838 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 839 |
|
|
"R_PPC64_ADDR16_HIGHEST", /* name */
|
| 840 |
|
|
FALSE, /* partial_inplace */
|
| 841 |
|
|
0, /* src_mask */
|
| 842 |
|
|
0xffff, /* dst_mask */
|
| 843 |
|
|
FALSE), /* pcrel_offset */
|
| 844 |
|
|
|
| 845 |
|
|
/* The bits 48-63 of an address, plus 1 if the contents of the low
|
| 846 |
|
|
16 bits, treated as a signed number, is negative. */
|
| 847 |
|
|
HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
|
| 848 |
|
|
48, /* rightshift */
|
| 849 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 850 |
|
|
16, /* bitsize */
|
| 851 |
|
|
FALSE, /* pc_relative */
|
| 852 |
|
|
0, /* bitpos */
|
| 853 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 854 |
|
|
ppc64_elf_ha_reloc, /* special_function */
|
| 855 |
|
|
"R_PPC64_ADDR16_HIGHESTA", /* name */
|
| 856 |
|
|
FALSE, /* partial_inplace */
|
| 857 |
|
|
0, /* src_mask */
|
| 858 |
|
|
0xffff, /* dst_mask */
|
| 859 |
|
|
FALSE), /* pcrel_offset */
|
| 860 |
|
|
|
| 861 |
|
|
/* Like ADDR64, but may be unaligned. */
|
| 862 |
|
|
HOWTO (R_PPC64_UADDR64, /* type */
|
| 863 |
|
|
0, /* rightshift */
|
| 864 |
|
|
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
|
| 865 |
|
|
64, /* bitsize */
|
| 866 |
|
|
FALSE, /* pc_relative */
|
| 867 |
|
|
0, /* bitpos */
|
| 868 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 869 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 870 |
|
|
"R_PPC64_UADDR64", /* name */
|
| 871 |
|
|
FALSE, /* partial_inplace */
|
| 872 |
|
|
0, /* src_mask */
|
| 873 |
|
|
ONES (64), /* dst_mask */
|
| 874 |
|
|
FALSE), /* pcrel_offset */
|
| 875 |
|
|
|
| 876 |
|
|
/* 64-bit relative relocation. */
|
| 877 |
|
|
HOWTO (R_PPC64_REL64, /* type */
|
| 878 |
|
|
0, /* rightshift */
|
| 879 |
|
|
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
|
| 880 |
|
|
64, /* bitsize */
|
| 881 |
|
|
TRUE, /* pc_relative */
|
| 882 |
|
|
0, /* bitpos */
|
| 883 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 884 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 885 |
|
|
"R_PPC64_REL64", /* name */
|
| 886 |
|
|
FALSE, /* partial_inplace */
|
| 887 |
|
|
0, /* src_mask */
|
| 888 |
|
|
ONES (64), /* dst_mask */
|
| 889 |
|
|
TRUE), /* pcrel_offset */
|
| 890 |
|
|
|
| 891 |
|
|
/* 64-bit relocation to the symbol's procedure linkage table. */
|
| 892 |
|
|
HOWTO (R_PPC64_PLT64, /* type */
|
| 893 |
|
|
0, /* rightshift */
|
| 894 |
|
|
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
|
| 895 |
|
|
64, /* bitsize */
|
| 896 |
|
|
FALSE, /* pc_relative */
|
| 897 |
|
|
0, /* bitpos */
|
| 898 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 899 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 900 |
|
|
"R_PPC64_PLT64", /* name */
|
| 901 |
|
|
FALSE, /* partial_inplace */
|
| 902 |
|
|
0, /* src_mask */
|
| 903 |
|
|
ONES (64), /* dst_mask */
|
| 904 |
|
|
FALSE), /* pcrel_offset */
|
| 905 |
|
|
|
| 906 |
|
|
/* 64-bit PC relative relocation to the symbol's procedure linkage
|
| 907 |
|
|
table. */
|
| 908 |
|
|
/* FIXME: R_PPC64_PLTREL64 not supported. */
|
| 909 |
|
|
HOWTO (R_PPC64_PLTREL64, /* type */
|
| 910 |
|
|
0, /* rightshift */
|
| 911 |
|
|
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
|
| 912 |
|
|
64, /* bitsize */
|
| 913 |
|
|
TRUE, /* pc_relative */
|
| 914 |
|
|
0, /* bitpos */
|
| 915 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 916 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 917 |
|
|
"R_PPC64_PLTREL64", /* name */
|
| 918 |
|
|
FALSE, /* partial_inplace */
|
| 919 |
|
|
0, /* src_mask */
|
| 920 |
|
|
ONES (64), /* dst_mask */
|
| 921 |
|
|
TRUE), /* pcrel_offset */
|
| 922 |
|
|
|
| 923 |
|
|
/* 16 bit TOC-relative relocation. */
|
| 924 |
|
|
|
| 925 |
|
|
/* R_PPC64_TOC16 47 half16* S + A - .TOC. */
|
| 926 |
|
|
HOWTO (R_PPC64_TOC16, /* type */
|
| 927 |
|
|
0, /* rightshift */
|
| 928 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 929 |
|
|
16, /* bitsize */
|
| 930 |
|
|
FALSE, /* pc_relative */
|
| 931 |
|
|
0, /* bitpos */
|
| 932 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 933 |
|
|
ppc64_elf_toc_reloc, /* special_function */
|
| 934 |
|
|
"R_PPC64_TOC16", /* name */
|
| 935 |
|
|
FALSE, /* partial_inplace */
|
| 936 |
|
|
0, /* src_mask */
|
| 937 |
|
|
0xffff, /* dst_mask */
|
| 938 |
|
|
FALSE), /* pcrel_offset */
|
| 939 |
|
|
|
| 940 |
|
|
/* 16 bit TOC-relative relocation without overflow. */
|
| 941 |
|
|
|
| 942 |
|
|
/* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
|
| 943 |
|
|
HOWTO (R_PPC64_TOC16_LO, /* type */
|
| 944 |
|
|
0, /* rightshift */
|
| 945 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 946 |
|
|
16, /* bitsize */
|
| 947 |
|
|
FALSE, /* pc_relative */
|
| 948 |
|
|
0, /* bitpos */
|
| 949 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 950 |
|
|
ppc64_elf_toc_reloc, /* special_function */
|
| 951 |
|
|
"R_PPC64_TOC16_LO", /* name */
|
| 952 |
|
|
FALSE, /* partial_inplace */
|
| 953 |
|
|
0, /* src_mask */
|
| 954 |
|
|
0xffff, /* dst_mask */
|
| 955 |
|
|
FALSE), /* pcrel_offset */
|
| 956 |
|
|
|
| 957 |
|
|
/* 16 bit TOC-relative relocation, high 16 bits. */
|
| 958 |
|
|
|
| 959 |
|
|
/* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
|
| 960 |
|
|
HOWTO (R_PPC64_TOC16_HI, /* type */
|
| 961 |
|
|
16, /* rightshift */
|
| 962 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 963 |
|
|
16, /* bitsize */
|
| 964 |
|
|
FALSE, /* pc_relative */
|
| 965 |
|
|
0, /* bitpos */
|
| 966 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 967 |
|
|
ppc64_elf_toc_reloc, /* special_function */
|
| 968 |
|
|
"R_PPC64_TOC16_HI", /* name */
|
| 969 |
|
|
FALSE, /* partial_inplace */
|
| 970 |
|
|
0, /* src_mask */
|
| 971 |
|
|
0xffff, /* dst_mask */
|
| 972 |
|
|
FALSE), /* pcrel_offset */
|
| 973 |
|
|
|
| 974 |
|
|
/* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
|
| 975 |
|
|
contents of the low 16 bits, treated as a signed number, is
|
| 976 |
|
|
negative. */
|
| 977 |
|
|
|
| 978 |
|
|
/* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
|
| 979 |
|
|
HOWTO (R_PPC64_TOC16_HA, /* type */
|
| 980 |
|
|
16, /* rightshift */
|
| 981 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 982 |
|
|
16, /* bitsize */
|
| 983 |
|
|
FALSE, /* pc_relative */
|
| 984 |
|
|
0, /* bitpos */
|
| 985 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 986 |
|
|
ppc64_elf_toc_ha_reloc, /* special_function */
|
| 987 |
|
|
"R_PPC64_TOC16_HA", /* name */
|
| 988 |
|
|
FALSE, /* partial_inplace */
|
| 989 |
|
|
0, /* src_mask */
|
| 990 |
|
|
0xffff, /* dst_mask */
|
| 991 |
|
|
FALSE), /* pcrel_offset */
|
| 992 |
|
|
|
| 993 |
|
|
/* 64-bit relocation; insert value of TOC base (.TOC.). */
|
| 994 |
|
|
|
| 995 |
|
|
/* R_PPC64_TOC 51 doubleword64 .TOC. */
|
| 996 |
|
|
HOWTO (R_PPC64_TOC, /* type */
|
| 997 |
|
|
0, /* rightshift */
|
| 998 |
|
|
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
|
| 999 |
|
|
64, /* bitsize */
|
| 1000 |
|
|
FALSE, /* pc_relative */
|
| 1001 |
|
|
0, /* bitpos */
|
| 1002 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 1003 |
|
|
ppc64_elf_toc64_reloc, /* special_function */
|
| 1004 |
|
|
"R_PPC64_TOC", /* name */
|
| 1005 |
|
|
FALSE, /* partial_inplace */
|
| 1006 |
|
|
0, /* src_mask */
|
| 1007 |
|
|
ONES (64), /* dst_mask */
|
| 1008 |
|
|
FALSE), /* pcrel_offset */
|
| 1009 |
|
|
|
| 1010 |
|
|
/* Like R_PPC64_GOT16, but also informs the link editor that the
|
| 1011 |
|
|
value to relocate may (!) refer to a PLT entry which the link
|
| 1012 |
|
|
editor (a) may replace with the symbol value. If the link editor
|
| 1013 |
|
|
is unable to fully resolve the symbol, it may (b) create a PLT
|
| 1014 |
|
|
entry and store the address to the new PLT entry in the GOT.
|
| 1015 |
|
|
This permits lazy resolution of function symbols at run time.
|
| 1016 |
|
|
The link editor may also skip all of this and just (c) emit a
|
| 1017 |
|
|
R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
|
| 1018 |
|
|
/* FIXME: R_PPC64_PLTGOT16 not implemented. */
|
| 1019 |
|
|
HOWTO (R_PPC64_PLTGOT16, /* type */
|
| 1020 |
|
|
0, /* rightshift */
|
| 1021 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1022 |
|
|
16, /* bitsize */
|
| 1023 |
|
|
FALSE, /* pc_relative */
|
| 1024 |
|
|
0, /* bitpos */
|
| 1025 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 1026 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1027 |
|
|
"R_PPC64_PLTGOT16", /* name */
|
| 1028 |
|
|
FALSE, /* partial_inplace */
|
| 1029 |
|
|
0, /* src_mask */
|
| 1030 |
|
|
0xffff, /* dst_mask */
|
| 1031 |
|
|
FALSE), /* pcrel_offset */
|
| 1032 |
|
|
|
| 1033 |
|
|
/* Like R_PPC64_PLTGOT16, but without overflow. */
|
| 1034 |
|
|
/* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
|
| 1035 |
|
|
HOWTO (R_PPC64_PLTGOT16_LO, /* type */
|
| 1036 |
|
|
0, /* rightshift */
|
| 1037 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1038 |
|
|
16, /* bitsize */
|
| 1039 |
|
|
FALSE, /* pc_relative */
|
| 1040 |
|
|
0, /* bitpos */
|
| 1041 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1042 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1043 |
|
|
"R_PPC64_PLTGOT16_LO", /* name */
|
| 1044 |
|
|
FALSE, /* partial_inplace */
|
| 1045 |
|
|
0, /* src_mask */
|
| 1046 |
|
|
0xffff, /* dst_mask */
|
| 1047 |
|
|
FALSE), /* pcrel_offset */
|
| 1048 |
|
|
|
| 1049 |
|
|
/* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
|
| 1050 |
|
|
/* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
|
| 1051 |
|
|
HOWTO (R_PPC64_PLTGOT16_HI, /* type */
|
| 1052 |
|
|
16, /* rightshift */
|
| 1053 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1054 |
|
|
16, /* bitsize */
|
| 1055 |
|
|
FALSE, /* pc_relative */
|
| 1056 |
|
|
0, /* bitpos */
|
| 1057 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1058 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1059 |
|
|
"R_PPC64_PLTGOT16_HI", /* name */
|
| 1060 |
|
|
FALSE, /* partial_inplace */
|
| 1061 |
|
|
0, /* src_mask */
|
| 1062 |
|
|
0xffff, /* dst_mask */
|
| 1063 |
|
|
FALSE), /* pcrel_offset */
|
| 1064 |
|
|
|
| 1065 |
|
|
/* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
|
| 1066 |
|
|
1 if the contents of the low 16 bits, treated as a signed number,
|
| 1067 |
|
|
is negative. */
|
| 1068 |
|
|
/* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
|
| 1069 |
|
|
HOWTO (R_PPC64_PLTGOT16_HA, /* type */
|
| 1070 |
|
|
16, /* rightshift */
|
| 1071 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1072 |
|
|
16, /* bitsize */
|
| 1073 |
|
|
FALSE, /* pc_relative */
|
| 1074 |
|
|
0, /* bitpos */
|
| 1075 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1076 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1077 |
|
|
"R_PPC64_PLTGOT16_HA", /* name */
|
| 1078 |
|
|
FALSE, /* partial_inplace */
|
| 1079 |
|
|
0, /* src_mask */
|
| 1080 |
|
|
0xffff, /* dst_mask */
|
| 1081 |
|
|
FALSE), /* pcrel_offset */
|
| 1082 |
|
|
|
| 1083 |
|
|
/* Like R_PPC64_ADDR16, but for instructions with a DS field. */
|
| 1084 |
|
|
HOWTO (R_PPC64_ADDR16_DS, /* type */
|
| 1085 |
|
|
0, /* rightshift */
|
| 1086 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1087 |
|
|
16, /* bitsize */
|
| 1088 |
|
|
FALSE, /* pc_relative */
|
| 1089 |
|
|
0, /* bitpos */
|
| 1090 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 1091 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1092 |
|
|
"R_PPC64_ADDR16_DS", /* name */
|
| 1093 |
|
|
FALSE, /* partial_inplace */
|
| 1094 |
|
|
0, /* src_mask */
|
| 1095 |
|
|
0xfffc, /* dst_mask */
|
| 1096 |
|
|
FALSE), /* pcrel_offset */
|
| 1097 |
|
|
|
| 1098 |
|
|
/* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
|
| 1099 |
|
|
HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
|
| 1100 |
|
|
0, /* rightshift */
|
| 1101 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1102 |
|
|
16, /* bitsize */
|
| 1103 |
|
|
FALSE, /* pc_relative */
|
| 1104 |
|
|
0, /* bitpos */
|
| 1105 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1106 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1107 |
|
|
"R_PPC64_ADDR16_LO_DS",/* name */
|
| 1108 |
|
|
FALSE, /* partial_inplace */
|
| 1109 |
|
|
0, /* src_mask */
|
| 1110 |
|
|
0xfffc, /* dst_mask */
|
| 1111 |
|
|
FALSE), /* pcrel_offset */
|
| 1112 |
|
|
|
| 1113 |
|
|
/* Like R_PPC64_GOT16, but for instructions with a DS field. */
|
| 1114 |
|
|
HOWTO (R_PPC64_GOT16_DS, /* type */
|
| 1115 |
|
|
0, /* rightshift */
|
| 1116 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1117 |
|
|
16, /* bitsize */
|
| 1118 |
|
|
FALSE, /* pc_relative */
|
| 1119 |
|
|
0, /* bitpos */
|
| 1120 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 1121 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1122 |
|
|
"R_PPC64_GOT16_DS", /* name */
|
| 1123 |
|
|
FALSE, /* partial_inplace */
|
| 1124 |
|
|
0, /* src_mask */
|
| 1125 |
|
|
0xfffc, /* dst_mask */
|
| 1126 |
|
|
FALSE), /* pcrel_offset */
|
| 1127 |
|
|
|
| 1128 |
|
|
/* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
|
| 1129 |
|
|
HOWTO (R_PPC64_GOT16_LO_DS, /* type */
|
| 1130 |
|
|
0, /* rightshift */
|
| 1131 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1132 |
|
|
16, /* bitsize */
|
| 1133 |
|
|
FALSE, /* pc_relative */
|
| 1134 |
|
|
0, /* bitpos */
|
| 1135 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1136 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1137 |
|
|
"R_PPC64_GOT16_LO_DS", /* name */
|
| 1138 |
|
|
FALSE, /* partial_inplace */
|
| 1139 |
|
|
0, /* src_mask */
|
| 1140 |
|
|
0xfffc, /* dst_mask */
|
| 1141 |
|
|
FALSE), /* pcrel_offset */
|
| 1142 |
|
|
|
| 1143 |
|
|
/* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
|
| 1144 |
|
|
HOWTO (R_PPC64_PLT16_LO_DS, /* type */
|
| 1145 |
|
|
0, /* rightshift */
|
| 1146 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1147 |
|
|
16, /* bitsize */
|
| 1148 |
|
|
FALSE, /* pc_relative */
|
| 1149 |
|
|
0, /* bitpos */
|
| 1150 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1151 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1152 |
|
|
"R_PPC64_PLT16_LO_DS", /* name */
|
| 1153 |
|
|
FALSE, /* partial_inplace */
|
| 1154 |
|
|
0, /* src_mask */
|
| 1155 |
|
|
0xfffc, /* dst_mask */
|
| 1156 |
|
|
FALSE), /* pcrel_offset */
|
| 1157 |
|
|
|
| 1158 |
|
|
/* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
|
| 1159 |
|
|
HOWTO (R_PPC64_SECTOFF_DS, /* type */
|
| 1160 |
|
|
0, /* rightshift */
|
| 1161 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1162 |
|
|
16, /* bitsize */
|
| 1163 |
|
|
FALSE, /* pc_relative */
|
| 1164 |
|
|
0, /* bitpos */
|
| 1165 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 1166 |
|
|
ppc64_elf_sectoff_reloc, /* special_function */
|
| 1167 |
|
|
"R_PPC64_SECTOFF_DS", /* name */
|
| 1168 |
|
|
FALSE, /* partial_inplace */
|
| 1169 |
|
|
0, /* src_mask */
|
| 1170 |
|
|
0xfffc, /* dst_mask */
|
| 1171 |
|
|
FALSE), /* pcrel_offset */
|
| 1172 |
|
|
|
| 1173 |
|
|
/* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
|
| 1174 |
|
|
HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
|
| 1175 |
|
|
0, /* rightshift */
|
| 1176 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1177 |
|
|
16, /* bitsize */
|
| 1178 |
|
|
FALSE, /* pc_relative */
|
| 1179 |
|
|
0, /* bitpos */
|
| 1180 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1181 |
|
|
ppc64_elf_sectoff_reloc, /* special_function */
|
| 1182 |
|
|
"R_PPC64_SECTOFF_LO_DS",/* name */
|
| 1183 |
|
|
FALSE, /* partial_inplace */
|
| 1184 |
|
|
0, /* src_mask */
|
| 1185 |
|
|
0xfffc, /* dst_mask */
|
| 1186 |
|
|
FALSE), /* pcrel_offset */
|
| 1187 |
|
|
|
| 1188 |
|
|
/* Like R_PPC64_TOC16, but for instructions with a DS field. */
|
| 1189 |
|
|
HOWTO (R_PPC64_TOC16_DS, /* type */
|
| 1190 |
|
|
0, /* rightshift */
|
| 1191 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1192 |
|
|
16, /* bitsize */
|
| 1193 |
|
|
FALSE, /* pc_relative */
|
| 1194 |
|
|
0, /* bitpos */
|
| 1195 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 1196 |
|
|
ppc64_elf_toc_reloc, /* special_function */
|
| 1197 |
|
|
"R_PPC64_TOC16_DS", /* name */
|
| 1198 |
|
|
FALSE, /* partial_inplace */
|
| 1199 |
|
|
0, /* src_mask */
|
| 1200 |
|
|
0xfffc, /* dst_mask */
|
| 1201 |
|
|
FALSE), /* pcrel_offset */
|
| 1202 |
|
|
|
| 1203 |
|
|
/* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
|
| 1204 |
|
|
HOWTO (R_PPC64_TOC16_LO_DS, /* type */
|
| 1205 |
|
|
0, /* rightshift */
|
| 1206 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1207 |
|
|
16, /* bitsize */
|
| 1208 |
|
|
FALSE, /* pc_relative */
|
| 1209 |
|
|
0, /* bitpos */
|
| 1210 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1211 |
|
|
ppc64_elf_toc_reloc, /* special_function */
|
| 1212 |
|
|
"R_PPC64_TOC16_LO_DS", /* name */
|
| 1213 |
|
|
FALSE, /* partial_inplace */
|
| 1214 |
|
|
0, /* src_mask */
|
| 1215 |
|
|
0xfffc, /* dst_mask */
|
| 1216 |
|
|
FALSE), /* pcrel_offset */
|
| 1217 |
|
|
|
| 1218 |
|
|
/* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
|
| 1219 |
|
|
/* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
|
| 1220 |
|
|
HOWTO (R_PPC64_PLTGOT16_DS, /* type */
|
| 1221 |
|
|
0, /* rightshift */
|
| 1222 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1223 |
|
|
16, /* bitsize */
|
| 1224 |
|
|
FALSE, /* pc_relative */
|
| 1225 |
|
|
0, /* bitpos */
|
| 1226 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 1227 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1228 |
|
|
"R_PPC64_PLTGOT16_DS", /* name */
|
| 1229 |
|
|
FALSE, /* partial_inplace */
|
| 1230 |
|
|
0, /* src_mask */
|
| 1231 |
|
|
0xfffc, /* dst_mask */
|
| 1232 |
|
|
FALSE), /* pcrel_offset */
|
| 1233 |
|
|
|
| 1234 |
|
|
/* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
|
| 1235 |
|
|
/* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
|
| 1236 |
|
|
HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
|
| 1237 |
|
|
0, /* rightshift */
|
| 1238 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1239 |
|
|
16, /* bitsize */
|
| 1240 |
|
|
FALSE, /* pc_relative */
|
| 1241 |
|
|
0, /* bitpos */
|
| 1242 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1243 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1244 |
|
|
"R_PPC64_PLTGOT16_LO_DS",/* name */
|
| 1245 |
|
|
FALSE, /* partial_inplace */
|
| 1246 |
|
|
0, /* src_mask */
|
| 1247 |
|
|
0xfffc, /* dst_mask */
|
| 1248 |
|
|
FALSE), /* pcrel_offset */
|
| 1249 |
|
|
|
| 1250 |
|
|
/* Marker relocs for TLS. */
|
| 1251 |
|
|
HOWTO (R_PPC64_TLS,
|
| 1252 |
|
|
0, /* rightshift */
|
| 1253 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1254 |
|
|
32, /* bitsize */
|
| 1255 |
|
|
FALSE, /* pc_relative */
|
| 1256 |
|
|
0, /* bitpos */
|
| 1257 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1258 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1259 |
|
|
"R_PPC64_TLS", /* name */
|
| 1260 |
|
|
FALSE, /* partial_inplace */
|
| 1261 |
|
|
0, /* src_mask */
|
| 1262 |
|
|
0, /* dst_mask */
|
| 1263 |
|
|
FALSE), /* pcrel_offset */
|
| 1264 |
|
|
|
| 1265 |
|
|
HOWTO (R_PPC64_TLSGD,
|
| 1266 |
|
|
0, /* rightshift */
|
| 1267 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1268 |
|
|
32, /* bitsize */
|
| 1269 |
|
|
FALSE, /* pc_relative */
|
| 1270 |
|
|
0, /* bitpos */
|
| 1271 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1272 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1273 |
|
|
"R_PPC64_TLSGD", /* name */
|
| 1274 |
|
|
FALSE, /* partial_inplace */
|
| 1275 |
|
|
0, /* src_mask */
|
| 1276 |
|
|
0, /* dst_mask */
|
| 1277 |
|
|
FALSE), /* pcrel_offset */
|
| 1278 |
|
|
|
| 1279 |
|
|
HOWTO (R_PPC64_TLSLD,
|
| 1280 |
|
|
0, /* rightshift */
|
| 1281 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1282 |
|
|
32, /* bitsize */
|
| 1283 |
|
|
FALSE, /* pc_relative */
|
| 1284 |
|
|
0, /* bitpos */
|
| 1285 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1286 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1287 |
|
|
"R_PPC64_TLSLD", /* name */
|
| 1288 |
|
|
FALSE, /* partial_inplace */
|
| 1289 |
|
|
0, /* src_mask */
|
| 1290 |
|
|
0, /* dst_mask */
|
| 1291 |
|
|
FALSE), /* pcrel_offset */
|
| 1292 |
|
|
|
| 1293 |
163 |
khays |
HOWTO (R_PPC64_TOCSAVE,
|
| 1294 |
|
|
0, /* rightshift */
|
| 1295 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1296 |
|
|
32, /* bitsize */
|
| 1297 |
|
|
FALSE, /* pc_relative */
|
| 1298 |
|
|
0, /* bitpos */
|
| 1299 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1300 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1301 |
|
|
"R_PPC64_TOCSAVE", /* name */
|
| 1302 |
|
|
FALSE, /* partial_inplace */
|
| 1303 |
|
|
0, /* src_mask */
|
| 1304 |
|
|
0, /* dst_mask */
|
| 1305 |
|
|
FALSE), /* pcrel_offset */
|
| 1306 |
|
|
|
| 1307 |
14 |
khays |
/* Computes the load module index of the load module that contains the
|
| 1308 |
|
|
definition of its TLS sym. */
|
| 1309 |
|
|
HOWTO (R_PPC64_DTPMOD64,
|
| 1310 |
|
|
0, /* rightshift */
|
| 1311 |
|
|
4, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1312 |
|
|
64, /* bitsize */
|
| 1313 |
|
|
FALSE, /* pc_relative */
|
| 1314 |
|
|
0, /* bitpos */
|
| 1315 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1316 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1317 |
|
|
"R_PPC64_DTPMOD64", /* name */
|
| 1318 |
|
|
FALSE, /* partial_inplace */
|
| 1319 |
|
|
0, /* src_mask */
|
| 1320 |
|
|
ONES (64), /* dst_mask */
|
| 1321 |
|
|
FALSE), /* pcrel_offset */
|
| 1322 |
|
|
|
| 1323 |
|
|
/* Computes a dtv-relative displacement, the difference between the value
|
| 1324 |
|
|
of sym+add and the base address of the thread-local storage block that
|
| 1325 |
|
|
contains the definition of sym, minus 0x8000. */
|
| 1326 |
|
|
HOWTO (R_PPC64_DTPREL64,
|
| 1327 |
|
|
0, /* rightshift */
|
| 1328 |
|
|
4, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1329 |
|
|
64, /* bitsize */
|
| 1330 |
|
|
FALSE, /* pc_relative */
|
| 1331 |
|
|
0, /* bitpos */
|
| 1332 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1333 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1334 |
|
|
"R_PPC64_DTPREL64", /* name */
|
| 1335 |
|
|
FALSE, /* partial_inplace */
|
| 1336 |
|
|
0, /* src_mask */
|
| 1337 |
|
|
ONES (64), /* dst_mask */
|
| 1338 |
|
|
FALSE), /* pcrel_offset */
|
| 1339 |
|
|
|
| 1340 |
|
|
/* A 16 bit dtprel reloc. */
|
| 1341 |
|
|
HOWTO (R_PPC64_DTPREL16,
|
| 1342 |
|
|
0, /* rightshift */
|
| 1343 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1344 |
|
|
16, /* bitsize */
|
| 1345 |
|
|
FALSE, /* pc_relative */
|
| 1346 |
|
|
0, /* bitpos */
|
| 1347 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 1348 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1349 |
|
|
"R_PPC64_DTPREL16", /* name */
|
| 1350 |
|
|
FALSE, /* partial_inplace */
|
| 1351 |
|
|
0, /* src_mask */
|
| 1352 |
|
|
0xffff, /* dst_mask */
|
| 1353 |
|
|
FALSE), /* pcrel_offset */
|
| 1354 |
|
|
|
| 1355 |
|
|
/* Like DTPREL16, but no overflow. */
|
| 1356 |
|
|
HOWTO (R_PPC64_DTPREL16_LO,
|
| 1357 |
|
|
0, /* rightshift */
|
| 1358 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1359 |
|
|
16, /* bitsize */
|
| 1360 |
|
|
FALSE, /* pc_relative */
|
| 1361 |
|
|
0, /* bitpos */
|
| 1362 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1363 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1364 |
|
|
"R_PPC64_DTPREL16_LO", /* name */
|
| 1365 |
|
|
FALSE, /* partial_inplace */
|
| 1366 |
|
|
0, /* src_mask */
|
| 1367 |
|
|
0xffff, /* dst_mask */
|
| 1368 |
|
|
FALSE), /* pcrel_offset */
|
| 1369 |
|
|
|
| 1370 |
|
|
/* Like DTPREL16_LO, but next higher group of 16 bits. */
|
| 1371 |
|
|
HOWTO (R_PPC64_DTPREL16_HI,
|
| 1372 |
|
|
16, /* rightshift */
|
| 1373 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1374 |
|
|
16, /* bitsize */
|
| 1375 |
|
|
FALSE, /* pc_relative */
|
| 1376 |
|
|
0, /* bitpos */
|
| 1377 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1378 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1379 |
|
|
"R_PPC64_DTPREL16_HI", /* name */
|
| 1380 |
|
|
FALSE, /* partial_inplace */
|
| 1381 |
|
|
0, /* src_mask */
|
| 1382 |
|
|
0xffff, /* dst_mask */
|
| 1383 |
|
|
FALSE), /* pcrel_offset */
|
| 1384 |
|
|
|
| 1385 |
|
|
/* Like DTPREL16_HI, but adjust for low 16 bits. */
|
| 1386 |
|
|
HOWTO (R_PPC64_DTPREL16_HA,
|
| 1387 |
|
|
16, /* rightshift */
|
| 1388 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1389 |
|
|
16, /* bitsize */
|
| 1390 |
|
|
FALSE, /* pc_relative */
|
| 1391 |
|
|
0, /* bitpos */
|
| 1392 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1393 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1394 |
|
|
"R_PPC64_DTPREL16_HA", /* name */
|
| 1395 |
|
|
FALSE, /* partial_inplace */
|
| 1396 |
|
|
0, /* src_mask */
|
| 1397 |
|
|
0xffff, /* dst_mask */
|
| 1398 |
|
|
FALSE), /* pcrel_offset */
|
| 1399 |
|
|
|
| 1400 |
|
|
/* Like DTPREL16_HI, but next higher group of 16 bits. */
|
| 1401 |
|
|
HOWTO (R_PPC64_DTPREL16_HIGHER,
|
| 1402 |
|
|
32, /* rightshift */
|
| 1403 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1404 |
|
|
16, /* bitsize */
|
| 1405 |
|
|
FALSE, /* pc_relative */
|
| 1406 |
|
|
0, /* bitpos */
|
| 1407 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1408 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1409 |
|
|
"R_PPC64_DTPREL16_HIGHER", /* name */
|
| 1410 |
|
|
FALSE, /* partial_inplace */
|
| 1411 |
|
|
0, /* src_mask */
|
| 1412 |
|
|
0xffff, /* dst_mask */
|
| 1413 |
|
|
FALSE), /* pcrel_offset */
|
| 1414 |
|
|
|
| 1415 |
|
|
/* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
|
| 1416 |
|
|
HOWTO (R_PPC64_DTPREL16_HIGHERA,
|
| 1417 |
|
|
32, /* rightshift */
|
| 1418 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1419 |
|
|
16, /* bitsize */
|
| 1420 |
|
|
FALSE, /* pc_relative */
|
| 1421 |
|
|
0, /* bitpos */
|
| 1422 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1423 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1424 |
|
|
"R_PPC64_DTPREL16_HIGHERA", /* name */
|
| 1425 |
|
|
FALSE, /* partial_inplace */
|
| 1426 |
|
|
0, /* src_mask */
|
| 1427 |
|
|
0xffff, /* dst_mask */
|
| 1428 |
|
|
FALSE), /* pcrel_offset */
|
| 1429 |
|
|
|
| 1430 |
|
|
/* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
|
| 1431 |
|
|
HOWTO (R_PPC64_DTPREL16_HIGHEST,
|
| 1432 |
|
|
48, /* rightshift */
|
| 1433 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1434 |
|
|
16, /* bitsize */
|
| 1435 |
|
|
FALSE, /* pc_relative */
|
| 1436 |
|
|
0, /* bitpos */
|
| 1437 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1438 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1439 |
|
|
"R_PPC64_DTPREL16_HIGHEST", /* name */
|
| 1440 |
|
|
FALSE, /* partial_inplace */
|
| 1441 |
|
|
0, /* src_mask */
|
| 1442 |
|
|
0xffff, /* dst_mask */
|
| 1443 |
|
|
FALSE), /* pcrel_offset */
|
| 1444 |
|
|
|
| 1445 |
|
|
/* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
|
| 1446 |
|
|
HOWTO (R_PPC64_DTPREL16_HIGHESTA,
|
| 1447 |
|
|
48, /* rightshift */
|
| 1448 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1449 |
|
|
16, /* bitsize */
|
| 1450 |
|
|
FALSE, /* pc_relative */
|
| 1451 |
|
|
0, /* bitpos */
|
| 1452 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1453 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1454 |
|
|
"R_PPC64_DTPREL16_HIGHESTA", /* name */
|
| 1455 |
|
|
FALSE, /* partial_inplace */
|
| 1456 |
|
|
0, /* src_mask */
|
| 1457 |
|
|
0xffff, /* dst_mask */
|
| 1458 |
|
|
FALSE), /* pcrel_offset */
|
| 1459 |
|
|
|
| 1460 |
|
|
/* Like DTPREL16, but for insns with a DS field. */
|
| 1461 |
|
|
HOWTO (R_PPC64_DTPREL16_DS,
|
| 1462 |
|
|
0, /* rightshift */
|
| 1463 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1464 |
|
|
16, /* bitsize */
|
| 1465 |
|
|
FALSE, /* pc_relative */
|
| 1466 |
|
|
0, /* bitpos */
|
| 1467 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 1468 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1469 |
|
|
"R_PPC64_DTPREL16_DS", /* name */
|
| 1470 |
|
|
FALSE, /* partial_inplace */
|
| 1471 |
|
|
0, /* src_mask */
|
| 1472 |
|
|
0xfffc, /* dst_mask */
|
| 1473 |
|
|
FALSE), /* pcrel_offset */
|
| 1474 |
|
|
|
| 1475 |
|
|
/* Like DTPREL16_DS, but no overflow. */
|
| 1476 |
|
|
HOWTO (R_PPC64_DTPREL16_LO_DS,
|
| 1477 |
|
|
0, /* rightshift */
|
| 1478 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1479 |
|
|
16, /* bitsize */
|
| 1480 |
|
|
FALSE, /* pc_relative */
|
| 1481 |
|
|
0, /* bitpos */
|
| 1482 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1483 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1484 |
|
|
"R_PPC64_DTPREL16_LO_DS", /* name */
|
| 1485 |
|
|
FALSE, /* partial_inplace */
|
| 1486 |
|
|
0, /* src_mask */
|
| 1487 |
|
|
0xfffc, /* dst_mask */
|
| 1488 |
|
|
FALSE), /* pcrel_offset */
|
| 1489 |
|
|
|
| 1490 |
|
|
/* Computes a tp-relative displacement, the difference between the value of
|
| 1491 |
|
|
sym+add and the value of the thread pointer (r13). */
|
| 1492 |
|
|
HOWTO (R_PPC64_TPREL64,
|
| 1493 |
|
|
0, /* rightshift */
|
| 1494 |
|
|
4, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1495 |
|
|
64, /* bitsize */
|
| 1496 |
|
|
FALSE, /* pc_relative */
|
| 1497 |
|
|
0, /* bitpos */
|
| 1498 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1499 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1500 |
|
|
"R_PPC64_TPREL64", /* name */
|
| 1501 |
|
|
FALSE, /* partial_inplace */
|
| 1502 |
|
|
0, /* src_mask */
|
| 1503 |
|
|
ONES (64), /* dst_mask */
|
| 1504 |
|
|
FALSE), /* pcrel_offset */
|
| 1505 |
|
|
|
| 1506 |
|
|
/* A 16 bit tprel reloc. */
|
| 1507 |
|
|
HOWTO (R_PPC64_TPREL16,
|
| 1508 |
|
|
0, /* rightshift */
|
| 1509 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1510 |
|
|
16, /* bitsize */
|
| 1511 |
|
|
FALSE, /* pc_relative */
|
| 1512 |
|
|
0, /* bitpos */
|
| 1513 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 1514 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1515 |
|
|
"R_PPC64_TPREL16", /* name */
|
| 1516 |
|
|
FALSE, /* partial_inplace */
|
| 1517 |
|
|
0, /* src_mask */
|
| 1518 |
|
|
0xffff, /* dst_mask */
|
| 1519 |
|
|
FALSE), /* pcrel_offset */
|
| 1520 |
|
|
|
| 1521 |
|
|
/* Like TPREL16, but no overflow. */
|
| 1522 |
|
|
HOWTO (R_PPC64_TPREL16_LO,
|
| 1523 |
|
|
0, /* rightshift */
|
| 1524 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1525 |
|
|
16, /* bitsize */
|
| 1526 |
|
|
FALSE, /* pc_relative */
|
| 1527 |
|
|
0, /* bitpos */
|
| 1528 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1529 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1530 |
|
|
"R_PPC64_TPREL16_LO", /* name */
|
| 1531 |
|
|
FALSE, /* partial_inplace */
|
| 1532 |
|
|
0, /* src_mask */
|
| 1533 |
|
|
0xffff, /* dst_mask */
|
| 1534 |
|
|
FALSE), /* pcrel_offset */
|
| 1535 |
|
|
|
| 1536 |
|
|
/* Like TPREL16_LO, but next higher group of 16 bits. */
|
| 1537 |
|
|
HOWTO (R_PPC64_TPREL16_HI,
|
| 1538 |
|
|
16, /* rightshift */
|
| 1539 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1540 |
|
|
16, /* bitsize */
|
| 1541 |
|
|
FALSE, /* pc_relative */
|
| 1542 |
|
|
0, /* bitpos */
|
| 1543 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1544 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1545 |
|
|
"R_PPC64_TPREL16_HI", /* name */
|
| 1546 |
|
|
FALSE, /* partial_inplace */
|
| 1547 |
|
|
0, /* src_mask */
|
| 1548 |
|
|
0xffff, /* dst_mask */
|
| 1549 |
|
|
FALSE), /* pcrel_offset */
|
| 1550 |
|
|
|
| 1551 |
|
|
/* Like TPREL16_HI, but adjust for low 16 bits. */
|
| 1552 |
|
|
HOWTO (R_PPC64_TPREL16_HA,
|
| 1553 |
|
|
16, /* rightshift */
|
| 1554 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1555 |
|
|
16, /* bitsize */
|
| 1556 |
|
|
FALSE, /* pc_relative */
|
| 1557 |
|
|
0, /* bitpos */
|
| 1558 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1559 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1560 |
|
|
"R_PPC64_TPREL16_HA", /* name */
|
| 1561 |
|
|
FALSE, /* partial_inplace */
|
| 1562 |
|
|
0, /* src_mask */
|
| 1563 |
|
|
0xffff, /* dst_mask */
|
| 1564 |
|
|
FALSE), /* pcrel_offset */
|
| 1565 |
|
|
|
| 1566 |
|
|
/* Like TPREL16_HI, but next higher group of 16 bits. */
|
| 1567 |
|
|
HOWTO (R_PPC64_TPREL16_HIGHER,
|
| 1568 |
|
|
32, /* rightshift */
|
| 1569 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1570 |
|
|
16, /* bitsize */
|
| 1571 |
|
|
FALSE, /* pc_relative */
|
| 1572 |
|
|
0, /* bitpos */
|
| 1573 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1574 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1575 |
|
|
"R_PPC64_TPREL16_HIGHER", /* name */
|
| 1576 |
|
|
FALSE, /* partial_inplace */
|
| 1577 |
|
|
0, /* src_mask */
|
| 1578 |
|
|
0xffff, /* dst_mask */
|
| 1579 |
|
|
FALSE), /* pcrel_offset */
|
| 1580 |
|
|
|
| 1581 |
|
|
/* Like TPREL16_HIGHER, but adjust for low 16 bits. */
|
| 1582 |
|
|
HOWTO (R_PPC64_TPREL16_HIGHERA,
|
| 1583 |
|
|
32, /* rightshift */
|
| 1584 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1585 |
|
|
16, /* bitsize */
|
| 1586 |
|
|
FALSE, /* pc_relative */
|
| 1587 |
|
|
0, /* bitpos */
|
| 1588 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1589 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1590 |
|
|
"R_PPC64_TPREL16_HIGHERA", /* name */
|
| 1591 |
|
|
FALSE, /* partial_inplace */
|
| 1592 |
|
|
0, /* src_mask */
|
| 1593 |
|
|
0xffff, /* dst_mask */
|
| 1594 |
|
|
FALSE), /* pcrel_offset */
|
| 1595 |
|
|
|
| 1596 |
|
|
/* Like TPREL16_HIGHER, but next higher group of 16 bits. */
|
| 1597 |
|
|
HOWTO (R_PPC64_TPREL16_HIGHEST,
|
| 1598 |
|
|
48, /* rightshift */
|
| 1599 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1600 |
|
|
16, /* bitsize */
|
| 1601 |
|
|
FALSE, /* pc_relative */
|
| 1602 |
|
|
0, /* bitpos */
|
| 1603 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1604 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1605 |
|
|
"R_PPC64_TPREL16_HIGHEST", /* name */
|
| 1606 |
|
|
FALSE, /* partial_inplace */
|
| 1607 |
|
|
0, /* src_mask */
|
| 1608 |
|
|
0xffff, /* dst_mask */
|
| 1609 |
|
|
FALSE), /* pcrel_offset */
|
| 1610 |
|
|
|
| 1611 |
|
|
/* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
|
| 1612 |
|
|
HOWTO (R_PPC64_TPREL16_HIGHESTA,
|
| 1613 |
|
|
48, /* rightshift */
|
| 1614 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1615 |
|
|
16, /* bitsize */
|
| 1616 |
|
|
FALSE, /* pc_relative */
|
| 1617 |
|
|
0, /* bitpos */
|
| 1618 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1619 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1620 |
|
|
"R_PPC64_TPREL16_HIGHESTA", /* name */
|
| 1621 |
|
|
FALSE, /* partial_inplace */
|
| 1622 |
|
|
0, /* src_mask */
|
| 1623 |
|
|
0xffff, /* dst_mask */
|
| 1624 |
|
|
FALSE), /* pcrel_offset */
|
| 1625 |
|
|
|
| 1626 |
|
|
/* Like TPREL16, but for insns with a DS field. */
|
| 1627 |
|
|
HOWTO (R_PPC64_TPREL16_DS,
|
| 1628 |
|
|
0, /* rightshift */
|
| 1629 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1630 |
|
|
16, /* bitsize */
|
| 1631 |
|
|
FALSE, /* pc_relative */
|
| 1632 |
|
|
0, /* bitpos */
|
| 1633 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 1634 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1635 |
|
|
"R_PPC64_TPREL16_DS", /* name */
|
| 1636 |
|
|
FALSE, /* partial_inplace */
|
| 1637 |
|
|
0, /* src_mask */
|
| 1638 |
|
|
0xfffc, /* dst_mask */
|
| 1639 |
|
|
FALSE), /* pcrel_offset */
|
| 1640 |
|
|
|
| 1641 |
|
|
/* Like TPREL16_DS, but no overflow. */
|
| 1642 |
|
|
HOWTO (R_PPC64_TPREL16_LO_DS,
|
| 1643 |
|
|
0, /* rightshift */
|
| 1644 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1645 |
|
|
16, /* bitsize */
|
| 1646 |
|
|
FALSE, /* pc_relative */
|
| 1647 |
|
|
0, /* bitpos */
|
| 1648 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1649 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1650 |
|
|
"R_PPC64_TPREL16_LO_DS", /* name */
|
| 1651 |
|
|
FALSE, /* partial_inplace */
|
| 1652 |
|
|
0, /* src_mask */
|
| 1653 |
|
|
0xfffc, /* dst_mask */
|
| 1654 |
|
|
FALSE), /* pcrel_offset */
|
| 1655 |
|
|
|
| 1656 |
|
|
/* Allocates two contiguous entries in the GOT to hold a tls_index structure,
|
| 1657 |
|
|
with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
|
| 1658 |
|
|
to the first entry relative to the TOC base (r2). */
|
| 1659 |
|
|
HOWTO (R_PPC64_GOT_TLSGD16,
|
| 1660 |
|
|
0, /* rightshift */
|
| 1661 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1662 |
|
|
16, /* bitsize */
|
| 1663 |
|
|
FALSE, /* pc_relative */
|
| 1664 |
|
|
0, /* bitpos */
|
| 1665 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 1666 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1667 |
|
|
"R_PPC64_GOT_TLSGD16", /* name */
|
| 1668 |
|
|
FALSE, /* partial_inplace */
|
| 1669 |
|
|
0, /* src_mask */
|
| 1670 |
|
|
0xffff, /* dst_mask */
|
| 1671 |
|
|
FALSE), /* pcrel_offset */
|
| 1672 |
|
|
|
| 1673 |
|
|
/* Like GOT_TLSGD16, but no overflow. */
|
| 1674 |
|
|
HOWTO (R_PPC64_GOT_TLSGD16_LO,
|
| 1675 |
|
|
0, /* rightshift */
|
| 1676 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1677 |
|
|
16, /* bitsize */
|
| 1678 |
|
|
FALSE, /* pc_relative */
|
| 1679 |
|
|
0, /* bitpos */
|
| 1680 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1681 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1682 |
|
|
"R_PPC64_GOT_TLSGD16_LO", /* name */
|
| 1683 |
|
|
FALSE, /* partial_inplace */
|
| 1684 |
|
|
0, /* src_mask */
|
| 1685 |
|
|
0xffff, /* dst_mask */
|
| 1686 |
|
|
FALSE), /* pcrel_offset */
|
| 1687 |
|
|
|
| 1688 |
|
|
/* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
|
| 1689 |
|
|
HOWTO (R_PPC64_GOT_TLSGD16_HI,
|
| 1690 |
|
|
16, /* rightshift */
|
| 1691 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1692 |
|
|
16, /* bitsize */
|
| 1693 |
|
|
FALSE, /* pc_relative */
|
| 1694 |
|
|
0, /* bitpos */
|
| 1695 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1696 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1697 |
|
|
"R_PPC64_GOT_TLSGD16_HI", /* name */
|
| 1698 |
|
|
FALSE, /* partial_inplace */
|
| 1699 |
|
|
0, /* src_mask */
|
| 1700 |
|
|
0xffff, /* dst_mask */
|
| 1701 |
|
|
FALSE), /* pcrel_offset */
|
| 1702 |
|
|
|
| 1703 |
|
|
/* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
|
| 1704 |
|
|
HOWTO (R_PPC64_GOT_TLSGD16_HA,
|
| 1705 |
|
|
16, /* rightshift */
|
| 1706 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1707 |
|
|
16, /* bitsize */
|
| 1708 |
|
|
FALSE, /* pc_relative */
|
| 1709 |
|
|
0, /* bitpos */
|
| 1710 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1711 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1712 |
|
|
"R_PPC64_GOT_TLSGD16_HA", /* name */
|
| 1713 |
|
|
FALSE, /* partial_inplace */
|
| 1714 |
|
|
0, /* src_mask */
|
| 1715 |
|
|
0xffff, /* dst_mask */
|
| 1716 |
|
|
FALSE), /* pcrel_offset */
|
| 1717 |
|
|
|
| 1718 |
|
|
/* Allocates two contiguous entries in the GOT to hold a tls_index structure,
|
| 1719 |
|
|
with values (sym+add)@dtpmod and zero, and computes the offset to the
|
| 1720 |
|
|
first entry relative to the TOC base (r2). */
|
| 1721 |
|
|
HOWTO (R_PPC64_GOT_TLSLD16,
|
| 1722 |
|
|
0, /* rightshift */
|
| 1723 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1724 |
|
|
16, /* bitsize */
|
| 1725 |
|
|
FALSE, /* pc_relative */
|
| 1726 |
|
|
0, /* bitpos */
|
| 1727 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 1728 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1729 |
|
|
"R_PPC64_GOT_TLSLD16", /* name */
|
| 1730 |
|
|
FALSE, /* partial_inplace */
|
| 1731 |
|
|
0, /* src_mask */
|
| 1732 |
|
|
0xffff, /* dst_mask */
|
| 1733 |
|
|
FALSE), /* pcrel_offset */
|
| 1734 |
|
|
|
| 1735 |
|
|
/* Like GOT_TLSLD16, but no overflow. */
|
| 1736 |
|
|
HOWTO (R_PPC64_GOT_TLSLD16_LO,
|
| 1737 |
|
|
0, /* rightshift */
|
| 1738 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1739 |
|
|
16, /* bitsize */
|
| 1740 |
|
|
FALSE, /* pc_relative */
|
| 1741 |
|
|
0, /* bitpos */
|
| 1742 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1743 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1744 |
|
|
"R_PPC64_GOT_TLSLD16_LO", /* name */
|
| 1745 |
|
|
FALSE, /* partial_inplace */
|
| 1746 |
|
|
0, /* src_mask */
|
| 1747 |
|
|
0xffff, /* dst_mask */
|
| 1748 |
|
|
FALSE), /* pcrel_offset */
|
| 1749 |
|
|
|
| 1750 |
|
|
/* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
|
| 1751 |
|
|
HOWTO (R_PPC64_GOT_TLSLD16_HI,
|
| 1752 |
|
|
16, /* rightshift */
|
| 1753 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1754 |
|
|
16, /* bitsize */
|
| 1755 |
|
|
FALSE, /* pc_relative */
|
| 1756 |
|
|
0, /* bitpos */
|
| 1757 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1758 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1759 |
|
|
"R_PPC64_GOT_TLSLD16_HI", /* name */
|
| 1760 |
|
|
FALSE, /* partial_inplace */
|
| 1761 |
|
|
0, /* src_mask */
|
| 1762 |
|
|
0xffff, /* dst_mask */
|
| 1763 |
|
|
FALSE), /* pcrel_offset */
|
| 1764 |
|
|
|
| 1765 |
|
|
/* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
|
| 1766 |
|
|
HOWTO (R_PPC64_GOT_TLSLD16_HA,
|
| 1767 |
|
|
16, /* rightshift */
|
| 1768 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1769 |
|
|
16, /* bitsize */
|
| 1770 |
|
|
FALSE, /* pc_relative */
|
| 1771 |
|
|
0, /* bitpos */
|
| 1772 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1773 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1774 |
|
|
"R_PPC64_GOT_TLSLD16_HA", /* name */
|
| 1775 |
|
|
FALSE, /* partial_inplace */
|
| 1776 |
|
|
0, /* src_mask */
|
| 1777 |
|
|
0xffff, /* dst_mask */
|
| 1778 |
|
|
FALSE), /* pcrel_offset */
|
| 1779 |
|
|
|
| 1780 |
|
|
/* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
|
| 1781 |
|
|
the offset to the entry relative to the TOC base (r2). */
|
| 1782 |
|
|
HOWTO (R_PPC64_GOT_DTPREL16_DS,
|
| 1783 |
|
|
0, /* rightshift */
|
| 1784 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1785 |
|
|
16, /* bitsize */
|
| 1786 |
|
|
FALSE, /* pc_relative */
|
| 1787 |
|
|
0, /* bitpos */
|
| 1788 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 1789 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1790 |
|
|
"R_PPC64_GOT_DTPREL16_DS", /* name */
|
| 1791 |
|
|
FALSE, /* partial_inplace */
|
| 1792 |
|
|
0, /* src_mask */
|
| 1793 |
|
|
0xfffc, /* dst_mask */
|
| 1794 |
|
|
FALSE), /* pcrel_offset */
|
| 1795 |
|
|
|
| 1796 |
|
|
/* Like GOT_DTPREL16_DS, but no overflow. */
|
| 1797 |
|
|
HOWTO (R_PPC64_GOT_DTPREL16_LO_DS,
|
| 1798 |
|
|
0, /* rightshift */
|
| 1799 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1800 |
|
|
16, /* bitsize */
|
| 1801 |
|
|
FALSE, /* pc_relative */
|
| 1802 |
|
|
0, /* bitpos */
|
| 1803 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1804 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1805 |
|
|
"R_PPC64_GOT_DTPREL16_LO_DS", /* name */
|
| 1806 |
|
|
FALSE, /* partial_inplace */
|
| 1807 |
|
|
0, /* src_mask */
|
| 1808 |
|
|
0xfffc, /* dst_mask */
|
| 1809 |
|
|
FALSE), /* pcrel_offset */
|
| 1810 |
|
|
|
| 1811 |
|
|
/* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
|
| 1812 |
|
|
HOWTO (R_PPC64_GOT_DTPREL16_HI,
|
| 1813 |
|
|
16, /* rightshift */
|
| 1814 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1815 |
|
|
16, /* bitsize */
|
| 1816 |
|
|
FALSE, /* pc_relative */
|
| 1817 |
|
|
0, /* bitpos */
|
| 1818 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1819 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1820 |
|
|
"R_PPC64_GOT_DTPREL16_HI", /* name */
|
| 1821 |
|
|
FALSE, /* partial_inplace */
|
| 1822 |
|
|
0, /* src_mask */
|
| 1823 |
|
|
0xffff, /* dst_mask */
|
| 1824 |
|
|
FALSE), /* pcrel_offset */
|
| 1825 |
|
|
|
| 1826 |
|
|
/* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
|
| 1827 |
|
|
HOWTO (R_PPC64_GOT_DTPREL16_HA,
|
| 1828 |
|
|
16, /* rightshift */
|
| 1829 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1830 |
|
|
16, /* bitsize */
|
| 1831 |
|
|
FALSE, /* pc_relative */
|
| 1832 |
|
|
0, /* bitpos */
|
| 1833 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1834 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1835 |
|
|
"R_PPC64_GOT_DTPREL16_HA", /* name */
|
| 1836 |
|
|
FALSE, /* partial_inplace */
|
| 1837 |
|
|
0, /* src_mask */
|
| 1838 |
|
|
0xffff, /* dst_mask */
|
| 1839 |
|
|
FALSE), /* pcrel_offset */
|
| 1840 |
|
|
|
| 1841 |
|
|
/* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
|
| 1842 |
|
|
offset to the entry relative to the TOC base (r2). */
|
| 1843 |
|
|
HOWTO (R_PPC64_GOT_TPREL16_DS,
|
| 1844 |
|
|
0, /* rightshift */
|
| 1845 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1846 |
|
|
16, /* bitsize */
|
| 1847 |
|
|
FALSE, /* pc_relative */
|
| 1848 |
|
|
0, /* bitpos */
|
| 1849 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 1850 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1851 |
|
|
"R_PPC64_GOT_TPREL16_DS", /* name */
|
| 1852 |
|
|
FALSE, /* partial_inplace */
|
| 1853 |
|
|
0, /* src_mask */
|
| 1854 |
|
|
0xfffc, /* dst_mask */
|
| 1855 |
|
|
FALSE), /* pcrel_offset */
|
| 1856 |
|
|
|
| 1857 |
|
|
/* Like GOT_TPREL16_DS, but no overflow. */
|
| 1858 |
|
|
HOWTO (R_PPC64_GOT_TPREL16_LO_DS,
|
| 1859 |
|
|
0, /* rightshift */
|
| 1860 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1861 |
|
|
16, /* bitsize */
|
| 1862 |
|
|
FALSE, /* pc_relative */
|
| 1863 |
|
|
0, /* bitpos */
|
| 1864 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1865 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1866 |
|
|
"R_PPC64_GOT_TPREL16_LO_DS", /* name */
|
| 1867 |
|
|
FALSE, /* partial_inplace */
|
| 1868 |
|
|
0, /* src_mask */
|
| 1869 |
|
|
0xfffc, /* dst_mask */
|
| 1870 |
|
|
FALSE), /* pcrel_offset */
|
| 1871 |
|
|
|
| 1872 |
|
|
/* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
|
| 1873 |
|
|
HOWTO (R_PPC64_GOT_TPREL16_HI,
|
| 1874 |
|
|
16, /* rightshift */
|
| 1875 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1876 |
|
|
16, /* bitsize */
|
| 1877 |
|
|
FALSE, /* pc_relative */
|
| 1878 |
|
|
0, /* bitpos */
|
| 1879 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1880 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1881 |
|
|
"R_PPC64_GOT_TPREL16_HI", /* name */
|
| 1882 |
|
|
FALSE, /* partial_inplace */
|
| 1883 |
|
|
0, /* src_mask */
|
| 1884 |
|
|
0xffff, /* dst_mask */
|
| 1885 |
|
|
FALSE), /* pcrel_offset */
|
| 1886 |
|
|
|
| 1887 |
|
|
/* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
|
| 1888 |
|
|
HOWTO (R_PPC64_GOT_TPREL16_HA,
|
| 1889 |
|
|
16, /* rightshift */
|
| 1890 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1891 |
|
|
16, /* bitsize */
|
| 1892 |
|
|
FALSE, /* pc_relative */
|
| 1893 |
|
|
0, /* bitpos */
|
| 1894 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1895 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1896 |
|
|
"R_PPC64_GOT_TPREL16_HA", /* name */
|
| 1897 |
|
|
FALSE, /* partial_inplace */
|
| 1898 |
|
|
0, /* src_mask */
|
| 1899 |
|
|
0xffff, /* dst_mask */
|
| 1900 |
|
|
FALSE), /* pcrel_offset */
|
| 1901 |
|
|
|
| 1902 |
|
|
HOWTO (R_PPC64_JMP_IREL, /* type */
|
| 1903 |
|
|
0, /* rightshift */
|
| 1904 |
|
|
0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
|
| 1905 |
|
|
0, /* bitsize */
|
| 1906 |
|
|
FALSE, /* pc_relative */
|
| 1907 |
|
|
0, /* bitpos */
|
| 1908 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1909 |
|
|
ppc64_elf_unhandled_reloc, /* special_function */
|
| 1910 |
|
|
"R_PPC64_JMP_IREL", /* name */
|
| 1911 |
|
|
FALSE, /* partial_inplace */
|
| 1912 |
|
|
0, /* src_mask */
|
| 1913 |
|
|
0, /* dst_mask */
|
| 1914 |
|
|
FALSE), /* pcrel_offset */
|
| 1915 |
|
|
|
| 1916 |
|
|
HOWTO (R_PPC64_IRELATIVE, /* type */
|
| 1917 |
|
|
0, /* rightshift */
|
| 1918 |
|
|
4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
|
| 1919 |
|
|
64, /* bitsize */
|
| 1920 |
|
|
FALSE, /* pc_relative */
|
| 1921 |
|
|
0, /* bitpos */
|
| 1922 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1923 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1924 |
|
|
"R_PPC64_IRELATIVE", /* name */
|
| 1925 |
|
|
FALSE, /* partial_inplace */
|
| 1926 |
|
|
0, /* src_mask */
|
| 1927 |
|
|
ONES (64), /* dst_mask */
|
| 1928 |
|
|
FALSE), /* pcrel_offset */
|
| 1929 |
|
|
|
| 1930 |
|
|
/* A 16 bit relative relocation. */
|
| 1931 |
|
|
HOWTO (R_PPC64_REL16, /* type */
|
| 1932 |
|
|
0, /* rightshift */
|
| 1933 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1934 |
|
|
16, /* bitsize */
|
| 1935 |
|
|
TRUE, /* pc_relative */
|
| 1936 |
|
|
0, /* bitpos */
|
| 1937 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 1938 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1939 |
|
|
"R_PPC64_REL16", /* name */
|
| 1940 |
|
|
FALSE, /* partial_inplace */
|
| 1941 |
|
|
0, /* src_mask */
|
| 1942 |
|
|
0xffff, /* dst_mask */
|
| 1943 |
|
|
TRUE), /* pcrel_offset */
|
| 1944 |
|
|
|
| 1945 |
|
|
/* A 16 bit relative relocation without overflow. */
|
| 1946 |
|
|
HOWTO (R_PPC64_REL16_LO, /* type */
|
| 1947 |
|
|
0, /* rightshift */
|
| 1948 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1949 |
|
|
16, /* bitsize */
|
| 1950 |
|
|
TRUE, /* pc_relative */
|
| 1951 |
|
|
0, /* bitpos */
|
| 1952 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1953 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1954 |
|
|
"R_PPC64_REL16_LO", /* name */
|
| 1955 |
|
|
FALSE, /* partial_inplace */
|
| 1956 |
|
|
0, /* src_mask */
|
| 1957 |
|
|
0xffff, /* dst_mask */
|
| 1958 |
|
|
TRUE), /* pcrel_offset */
|
| 1959 |
|
|
|
| 1960 |
|
|
/* The high order 16 bits of a relative address. */
|
| 1961 |
|
|
HOWTO (R_PPC64_REL16_HI, /* type */
|
| 1962 |
|
|
16, /* rightshift */
|
| 1963 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1964 |
|
|
16, /* bitsize */
|
| 1965 |
|
|
TRUE, /* pc_relative */
|
| 1966 |
|
|
0, /* bitpos */
|
| 1967 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1968 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1969 |
|
|
"R_PPC64_REL16_HI", /* name */
|
| 1970 |
|
|
FALSE, /* partial_inplace */
|
| 1971 |
|
|
0, /* src_mask */
|
| 1972 |
|
|
0xffff, /* dst_mask */
|
| 1973 |
|
|
TRUE), /* pcrel_offset */
|
| 1974 |
|
|
|
| 1975 |
|
|
/* The high order 16 bits of a relative address, plus 1 if the contents of
|
| 1976 |
|
|
the low 16 bits, treated as a signed number, is negative. */
|
| 1977 |
|
|
HOWTO (R_PPC64_REL16_HA, /* type */
|
| 1978 |
|
|
16, /* rightshift */
|
| 1979 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1980 |
|
|
16, /* bitsize */
|
| 1981 |
|
|
TRUE, /* pc_relative */
|
| 1982 |
|
|
0, /* bitpos */
|
| 1983 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1984 |
|
|
ppc64_elf_ha_reloc, /* special_function */
|
| 1985 |
|
|
"R_PPC64_REL16_HA", /* name */
|
| 1986 |
|
|
FALSE, /* partial_inplace */
|
| 1987 |
|
|
0, /* src_mask */
|
| 1988 |
|
|
0xffff, /* dst_mask */
|
| 1989 |
|
|
TRUE), /* pcrel_offset */
|
| 1990 |
|
|
|
| 1991 |
|
|
/* GNU extension to record C++ vtable hierarchy. */
|
| 1992 |
|
|
HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
|
| 1993 |
|
|
0, /* rightshift */
|
| 1994 |
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1995 |
|
|
0, /* bitsize */
|
| 1996 |
|
|
FALSE, /* pc_relative */
|
| 1997 |
|
|
0, /* bitpos */
|
| 1998 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1999 |
|
|
NULL, /* special_function */
|
| 2000 |
|
|
"R_PPC64_GNU_VTINHERIT", /* name */
|
| 2001 |
|
|
FALSE, /* partial_inplace */
|
| 2002 |
|
|
0, /* src_mask */
|
| 2003 |
|
|
0, /* dst_mask */
|
| 2004 |
|
|
FALSE), /* pcrel_offset */
|
| 2005 |
|
|
|
| 2006 |
|
|
/* GNU extension to record C++ vtable member usage. */
|
| 2007 |
|
|
HOWTO (R_PPC64_GNU_VTENTRY, /* type */
|
| 2008 |
|
|
0, /* rightshift */
|
| 2009 |
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
| 2010 |
|
|
0, /* bitsize */
|
| 2011 |
|
|
FALSE, /* pc_relative */
|
| 2012 |
|
|
0, /* bitpos */
|
| 2013 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 2014 |
|
|
NULL, /* special_function */
|
| 2015 |
|
|
"R_PPC64_GNU_VTENTRY", /* name */
|
| 2016 |
|
|
FALSE, /* partial_inplace */
|
| 2017 |
|
|
0, /* src_mask */
|
| 2018 |
|
|
0, /* dst_mask */
|
| 2019 |
|
|
FALSE), /* pcrel_offset */
|
| 2020 |
|
|
};
|
| 2021 |
|
|
|
| 2022 |
|
|
|
| 2023 |
|
|
/* Initialize the ppc64_elf_howto_table, so that linear accesses can
|
| 2024 |
|
|
be done. */
|
| 2025 |
|
|
|
| 2026 |
|
|
static void
|
| 2027 |
|
|
ppc_howto_init (void)
|
| 2028 |
|
|
{
|
| 2029 |
|
|
unsigned int i, type;
|
| 2030 |
|
|
|
| 2031 |
|
|
for (i = 0;
|
| 2032 |
|
|
i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
|
| 2033 |
|
|
i++)
|
| 2034 |
|
|
{
|
| 2035 |
|
|
type = ppc64_elf_howto_raw[i].type;
|
| 2036 |
|
|
BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
|
| 2037 |
|
|
/ sizeof (ppc64_elf_howto_table[0])));
|
| 2038 |
|
|
ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
|
| 2039 |
|
|
}
|
| 2040 |
|
|
}
|
| 2041 |
|
|
|
| 2042 |
|
|
static reloc_howto_type *
|
| 2043 |
|
|
ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
| 2044 |
|
|
bfd_reloc_code_real_type code)
|
| 2045 |
|
|
{
|
| 2046 |
|
|
enum elf_ppc64_reloc_type r = R_PPC64_NONE;
|
| 2047 |
|
|
|
| 2048 |
|
|
if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
|
| 2049 |
|
|
/* Initialize howto table if needed. */
|
| 2050 |
|
|
ppc_howto_init ();
|
| 2051 |
|
|
|
| 2052 |
|
|
switch (code)
|
| 2053 |
|
|
{
|
| 2054 |
|
|
default:
|
| 2055 |
|
|
return NULL;
|
| 2056 |
|
|
|
| 2057 |
|
|
case BFD_RELOC_NONE: r = R_PPC64_NONE;
|
| 2058 |
|
|
break;
|
| 2059 |
|
|
case BFD_RELOC_32: r = R_PPC64_ADDR32;
|
| 2060 |
|
|
break;
|
| 2061 |
|
|
case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24;
|
| 2062 |
|
|
break;
|
| 2063 |
|
|
case BFD_RELOC_16: r = R_PPC64_ADDR16;
|
| 2064 |
|
|
break;
|
| 2065 |
|
|
case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO;
|
| 2066 |
|
|
break;
|
| 2067 |
|
|
case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI;
|
| 2068 |
|
|
break;
|
| 2069 |
|
|
case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA;
|
| 2070 |
|
|
break;
|
| 2071 |
|
|
case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14;
|
| 2072 |
|
|
break;
|
| 2073 |
|
|
case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN;
|
| 2074 |
|
|
break;
|
| 2075 |
|
|
case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN;
|
| 2076 |
|
|
break;
|
| 2077 |
|
|
case BFD_RELOC_PPC_B26: r = R_PPC64_REL24;
|
| 2078 |
|
|
break;
|
| 2079 |
|
|
case BFD_RELOC_PPC_B16: r = R_PPC64_REL14;
|
| 2080 |
|
|
break;
|
| 2081 |
|
|
case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN;
|
| 2082 |
|
|
break;
|
| 2083 |
|
|
case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN;
|
| 2084 |
|
|
break;
|
| 2085 |
|
|
case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16;
|
| 2086 |
|
|
break;
|
| 2087 |
|
|
case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO;
|
| 2088 |
|
|
break;
|
| 2089 |
|
|
case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI;
|
| 2090 |
|
|
break;
|
| 2091 |
|
|
case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA;
|
| 2092 |
|
|
break;
|
| 2093 |
|
|
case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY;
|
| 2094 |
|
|
break;
|
| 2095 |
|
|
case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT;
|
| 2096 |
|
|
break;
|
| 2097 |
|
|
case BFD_RELOC_32_PCREL: r = R_PPC64_REL32;
|
| 2098 |
|
|
break;
|
| 2099 |
|
|
case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32;
|
| 2100 |
|
|
break;
|
| 2101 |
|
|
case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32;
|
| 2102 |
|
|
break;
|
| 2103 |
|
|
case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO;
|
| 2104 |
|
|
break;
|
| 2105 |
|
|
case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI;
|
| 2106 |
|
|
break;
|
| 2107 |
|
|
case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA;
|
| 2108 |
|
|
break;
|
| 2109 |
|
|
case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF;
|
| 2110 |
|
|
break;
|
| 2111 |
|
|
case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO;
|
| 2112 |
|
|
break;
|
| 2113 |
|
|
case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI;
|
| 2114 |
|
|
break;
|
| 2115 |
|
|
case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA;
|
| 2116 |
|
|
break;
|
| 2117 |
|
|
case BFD_RELOC_CTOR: r = R_PPC64_ADDR64;
|
| 2118 |
|
|
break;
|
| 2119 |
|
|
case BFD_RELOC_64: r = R_PPC64_ADDR64;
|
| 2120 |
|
|
break;
|
| 2121 |
|
|
case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER;
|
| 2122 |
|
|
break;
|
| 2123 |
|
|
case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA;
|
| 2124 |
|
|
break;
|
| 2125 |
|
|
case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST;
|
| 2126 |
|
|
break;
|
| 2127 |
|
|
case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA;
|
| 2128 |
|
|
break;
|
| 2129 |
|
|
case BFD_RELOC_64_PCREL: r = R_PPC64_REL64;
|
| 2130 |
|
|
break;
|
| 2131 |
|
|
case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64;
|
| 2132 |
|
|
break;
|
| 2133 |
|
|
case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64;
|
| 2134 |
|
|
break;
|
| 2135 |
|
|
case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16;
|
| 2136 |
|
|
break;
|
| 2137 |
|
|
case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO;
|
| 2138 |
|
|
break;
|
| 2139 |
|
|
case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI;
|
| 2140 |
|
|
break;
|
| 2141 |
|
|
case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA;
|
| 2142 |
|
|
break;
|
| 2143 |
|
|
case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC;
|
| 2144 |
|
|
break;
|
| 2145 |
|
|
case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16;
|
| 2146 |
|
|
break;
|
| 2147 |
|
|
case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO;
|
| 2148 |
|
|
break;
|
| 2149 |
|
|
case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI;
|
| 2150 |
|
|
break;
|
| 2151 |
|
|
case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA;
|
| 2152 |
|
|
break;
|
| 2153 |
|
|
case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS;
|
| 2154 |
|
|
break;
|
| 2155 |
|
|
case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS;
|
| 2156 |
|
|
break;
|
| 2157 |
|
|
case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS;
|
| 2158 |
|
|
break;
|
| 2159 |
|
|
case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS;
|
| 2160 |
|
|
break;
|
| 2161 |
|
|
case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS;
|
| 2162 |
|
|
break;
|
| 2163 |
|
|
case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS;
|
| 2164 |
|
|
break;
|
| 2165 |
|
|
case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS;
|
| 2166 |
|
|
break;
|
| 2167 |
|
|
case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS;
|
| 2168 |
|
|
break;
|
| 2169 |
|
|
case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS;
|
| 2170 |
|
|
break;
|
| 2171 |
|
|
case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS;
|
| 2172 |
|
|
break;
|
| 2173 |
|
|
case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS;
|
| 2174 |
|
|
break;
|
| 2175 |
|
|
case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS;
|
| 2176 |
|
|
break;
|
| 2177 |
|
|
case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD;
|
| 2178 |
|
|
break;
|
| 2179 |
|
|
case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD;
|
| 2180 |
|
|
break;
|
| 2181 |
|
|
case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64;
|
| 2182 |
|
|
break;
|
| 2183 |
|
|
case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16;
|
| 2184 |
|
|
break;
|
| 2185 |
|
|
case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO;
|
| 2186 |
|
|
break;
|
| 2187 |
|
|
case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI;
|
| 2188 |
|
|
break;
|
| 2189 |
|
|
case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA;
|
| 2190 |
|
|
break;
|
| 2191 |
|
|
case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64;
|
| 2192 |
|
|
break;
|
| 2193 |
|
|
case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16;
|
| 2194 |
|
|
break;
|
| 2195 |
|
|
case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO;
|
| 2196 |
|
|
break;
|
| 2197 |
|
|
case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI;
|
| 2198 |
|
|
break;
|
| 2199 |
|
|
case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA;
|
| 2200 |
|
|
break;
|
| 2201 |
|
|
case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64;
|
| 2202 |
|
|
break;
|
| 2203 |
|
|
case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16;
|
| 2204 |
|
|
break;
|
| 2205 |
|
|
case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO;
|
| 2206 |
|
|
break;
|
| 2207 |
|
|
case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI;
|
| 2208 |
|
|
break;
|
| 2209 |
|
|
case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA;
|
| 2210 |
|
|
break;
|
| 2211 |
|
|
case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16;
|
| 2212 |
|
|
break;
|
| 2213 |
|
|
case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO;
|
| 2214 |
|
|
break;
|
| 2215 |
|
|
case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI;
|
| 2216 |
|
|
break;
|
| 2217 |
|
|
case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA;
|
| 2218 |
|
|
break;
|
| 2219 |
|
|
case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS;
|
| 2220 |
|
|
break;
|
| 2221 |
|
|
case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS;
|
| 2222 |
|
|
break;
|
| 2223 |
|
|
case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI;
|
| 2224 |
|
|
break;
|
| 2225 |
|
|
case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA;
|
| 2226 |
|
|
break;
|
| 2227 |
|
|
case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS;
|
| 2228 |
|
|
break;
|
| 2229 |
|
|
case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS;
|
| 2230 |
|
|
break;
|
| 2231 |
|
|
case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI;
|
| 2232 |
|
|
break;
|
| 2233 |
|
|
case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA;
|
| 2234 |
|
|
break;
|
| 2235 |
|
|
case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS;
|
| 2236 |
|
|
break;
|
| 2237 |
|
|
case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS;
|
| 2238 |
|
|
break;
|
| 2239 |
|
|
case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER;
|
| 2240 |
|
|
break;
|
| 2241 |
|
|
case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA;
|
| 2242 |
|
|
break;
|
| 2243 |
|
|
case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST;
|
| 2244 |
|
|
break;
|
| 2245 |
|
|
case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA;
|
| 2246 |
|
|
break;
|
| 2247 |
|
|
case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS;
|
| 2248 |
|
|
break;
|
| 2249 |
|
|
case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS;
|
| 2250 |
|
|
break;
|
| 2251 |
|
|
case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER;
|
| 2252 |
|
|
break;
|
| 2253 |
|
|
case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA;
|
| 2254 |
|
|
break;
|
| 2255 |
|
|
case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST;
|
| 2256 |
|
|
break;
|
| 2257 |
|
|
case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA;
|
| 2258 |
|
|
break;
|
| 2259 |
|
|
case BFD_RELOC_16_PCREL: r = R_PPC64_REL16;
|
| 2260 |
|
|
break;
|
| 2261 |
|
|
case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO;
|
| 2262 |
|
|
break;
|
| 2263 |
|
|
case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI;
|
| 2264 |
|
|
break;
|
| 2265 |
|
|
case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA;
|
| 2266 |
|
|
break;
|
| 2267 |
|
|
case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT;
|
| 2268 |
|
|
break;
|
| 2269 |
|
|
case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY;
|
| 2270 |
|
|
break;
|
| 2271 |
|
|
}
|
| 2272 |
|
|
|
| 2273 |
|
|
return ppc64_elf_howto_table[r];
|
| 2274 |
|
|
};
|
| 2275 |
|
|
|
| 2276 |
|
|
static reloc_howto_type *
|
| 2277 |
|
|
ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
| 2278 |
|
|
const char *r_name)
|
| 2279 |
|
|
{
|
| 2280 |
|
|
unsigned int i;
|
| 2281 |
|
|
|
| 2282 |
|
|
for (i = 0;
|
| 2283 |
|
|
i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
|
| 2284 |
|
|
i++)
|
| 2285 |
|
|
if (ppc64_elf_howto_raw[i].name != NULL
|
| 2286 |
|
|
&& strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0)
|
| 2287 |
|
|
return &ppc64_elf_howto_raw[i];
|
| 2288 |
|
|
|
| 2289 |
|
|
return NULL;
|
| 2290 |
|
|
}
|
| 2291 |
|
|
|
| 2292 |
|
|
/* Set the howto pointer for a PowerPC ELF reloc. */
|
| 2293 |
|
|
|
| 2294 |
|
|
static void
|
| 2295 |
|
|
ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
|
| 2296 |
|
|
Elf_Internal_Rela *dst)
|
| 2297 |
|
|
{
|
| 2298 |
|
|
unsigned int type;
|
| 2299 |
|
|
|
| 2300 |
|
|
/* Initialize howto table if needed. */
|
| 2301 |
|
|
if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
|
| 2302 |
|
|
ppc_howto_init ();
|
| 2303 |
|
|
|
| 2304 |
|
|
type = ELF64_R_TYPE (dst->r_info);
|
| 2305 |
|
|
if (type >= (sizeof (ppc64_elf_howto_table)
|
| 2306 |
|
|
/ sizeof (ppc64_elf_howto_table[0])))
|
| 2307 |
|
|
{
|
| 2308 |
|
|
(*_bfd_error_handler) (_("%B: invalid relocation type %d"),
|
| 2309 |
|
|
abfd, (int) type);
|
| 2310 |
|
|
type = R_PPC64_NONE;
|
| 2311 |
|
|
}
|
| 2312 |
|
|
cache_ptr->howto = ppc64_elf_howto_table[type];
|
| 2313 |
|
|
}
|
| 2314 |
|
|
|
| 2315 |
|
|
/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
|
| 2316 |
|
|
|
| 2317 |
|
|
static bfd_reloc_status_type
|
| 2318 |
|
|
ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
|
| 2319 |
|
|
void *data, asection *input_section,
|
| 2320 |
|
|
bfd *output_bfd, char **error_message)
|
| 2321 |
|
|
{
|
| 2322 |
|
|
/* If this is a relocatable link (output_bfd test tells us), just
|
| 2323 |
|
|
call the generic function. Any adjustment will be done at final
|
| 2324 |
|
|
link time. */
|
| 2325 |
|
|
if (output_bfd != NULL)
|
| 2326 |
|
|
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
| 2327 |
|
|
input_section, output_bfd, error_message);
|
| 2328 |
|
|
|
| 2329 |
|
|
/* Adjust the addend for sign extension of the low 16 bits.
|
| 2330 |
|
|
We won't actually be using the low 16 bits, so trashing them
|
| 2331 |
|
|
doesn't matter. */
|
| 2332 |
|
|
reloc_entry->addend += 0x8000;
|
| 2333 |
|
|
return bfd_reloc_continue;
|
| 2334 |
|
|
}
|
| 2335 |
|
|
|
| 2336 |
|
|
static bfd_reloc_status_type
|
| 2337 |
|
|
ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
|
| 2338 |
|
|
void *data, asection *input_section,
|
| 2339 |
|
|
bfd *output_bfd, char **error_message)
|
| 2340 |
|
|
{
|
| 2341 |
|
|
if (output_bfd != NULL)
|
| 2342 |
|
|
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
| 2343 |
|
|
input_section, output_bfd, error_message);
|
| 2344 |
|
|
|
| 2345 |
|
|
if (strcmp (symbol->section->name, ".opd") == 0
|
| 2346 |
|
|
&& (symbol->section->owner->flags & DYNAMIC) == 0)
|
| 2347 |
|
|
{
|
| 2348 |
|
|
bfd_vma dest = opd_entry_value (symbol->section,
|
| 2349 |
|
|
symbol->value + reloc_entry->addend,
|
| 2350 |
|
|
NULL, NULL);
|
| 2351 |
|
|
if (dest != (bfd_vma) -1)
|
| 2352 |
|
|
reloc_entry->addend = dest - (symbol->value
|
| 2353 |
|
|
+ symbol->section->output_section->vma
|
| 2354 |
|
|
+ symbol->section->output_offset);
|
| 2355 |
|
|
}
|
| 2356 |
|
|
return bfd_reloc_continue;
|
| 2357 |
|
|
}
|
| 2358 |
|
|
|
| 2359 |
|
|
static bfd_reloc_status_type
|
| 2360 |
|
|
ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
|
| 2361 |
|
|
void *data, asection *input_section,
|
| 2362 |
|
|
bfd *output_bfd, char **error_message)
|
| 2363 |
|
|
{
|
| 2364 |
|
|
long insn;
|
| 2365 |
|
|
enum elf_ppc64_reloc_type r_type;
|
| 2366 |
|
|
bfd_size_type octets;
|
| 2367 |
166 |
khays |
/* Assume 'at' branch hints. */
|
| 2368 |
|
|
bfd_boolean is_isa_v2 = TRUE;
|
| 2369 |
14 |
khays |
|
| 2370 |
|
|
/* If this is a relocatable link (output_bfd test tells us), just
|
| 2371 |
|
|
call the generic function. Any adjustment will be done at final
|
| 2372 |
|
|
link time. */
|
| 2373 |
|
|
if (output_bfd != NULL)
|
| 2374 |
|
|
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
| 2375 |
|
|
input_section, output_bfd, error_message);
|
| 2376 |
|
|
|
| 2377 |
|
|
octets = reloc_entry->address * bfd_octets_per_byte (abfd);
|
| 2378 |
|
|
insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
|
| 2379 |
|
|
insn &= ~(0x01 << 21);
|
| 2380 |
|
|
r_type = reloc_entry->howto->type;
|
| 2381 |
|
|
if (r_type == R_PPC64_ADDR14_BRTAKEN
|
| 2382 |
|
|
|| r_type == R_PPC64_REL14_BRTAKEN)
|
| 2383 |
|
|
insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
|
| 2384 |
|
|
|
| 2385 |
166 |
khays |
if (is_isa_v2)
|
| 2386 |
14 |
khays |
{
|
| 2387 |
|
|
/* Set 'a' bit. This is 0b00010 in BO field for branch
|
| 2388 |
|
|
on CR(BI) insns (BO == 001at or 011at), and 0b01000
|
| 2389 |
|
|
for branch on CTR insns (BO == 1a00t or 1a01t). */
|
| 2390 |
|
|
if ((insn & (0x14 << 21)) == (0x04 << 21))
|
| 2391 |
|
|
insn |= 0x02 << 21;
|
| 2392 |
|
|
else if ((insn & (0x14 << 21)) == (0x10 << 21))
|
| 2393 |
|
|
insn |= 0x08 << 21;
|
| 2394 |
|
|
else
|
| 2395 |
|
|
goto out;
|
| 2396 |
|
|
}
|
| 2397 |
|
|
else
|
| 2398 |
|
|
{
|
| 2399 |
|
|
bfd_vma target = 0;
|
| 2400 |
|
|
bfd_vma from;
|
| 2401 |
|
|
|
| 2402 |
|
|
if (!bfd_is_com_section (symbol->section))
|
| 2403 |
|
|
target = symbol->value;
|
| 2404 |
|
|
target += symbol->section->output_section->vma;
|
| 2405 |
|
|
target += symbol->section->output_offset;
|
| 2406 |
|
|
target += reloc_entry->addend;
|
| 2407 |
|
|
|
| 2408 |
|
|
from = (reloc_entry->address
|
| 2409 |
|
|
+ input_section->output_offset
|
| 2410 |
|
|
+ input_section->output_section->vma);
|
| 2411 |
|
|
|
| 2412 |
|
|
/* Invert 'y' bit if not the default. */
|
| 2413 |
|
|
if ((bfd_signed_vma) (target - from) < 0)
|
| 2414 |
|
|
insn ^= 0x01 << 21;
|
| 2415 |
|
|
}
|
| 2416 |
|
|
bfd_put_32 (abfd, insn, (bfd_byte *) data + octets);
|
| 2417 |
|
|
out:
|
| 2418 |
|
|
return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data,
|
| 2419 |
|
|
input_section, output_bfd, error_message);
|
| 2420 |
|
|
}
|
| 2421 |
|
|
|
| 2422 |
|
|
static bfd_reloc_status_type
|
| 2423 |
|
|
ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
|
| 2424 |
|
|
void *data, asection *input_section,
|
| 2425 |
|
|
bfd *output_bfd, char **error_message)
|
| 2426 |
|
|
{
|
| 2427 |
|
|
/* If this is a relocatable link (output_bfd test tells us), just
|
| 2428 |
|
|
call the generic function. Any adjustment will be done at final
|
| 2429 |
|
|
link time. */
|
| 2430 |
|
|
if (output_bfd != NULL)
|
| 2431 |
|
|
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
| 2432 |
|
|
input_section, output_bfd, error_message);
|
| 2433 |
|
|
|
| 2434 |
|
|
/* Subtract the symbol section base address. */
|
| 2435 |
|
|
reloc_entry->addend -= symbol->section->output_section->vma;
|
| 2436 |
|
|
return bfd_reloc_continue;
|
| 2437 |
|
|
}
|
| 2438 |
|
|
|
| 2439 |
|
|
static bfd_reloc_status_type
|
| 2440 |
|
|
ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
|
| 2441 |
|
|
void *data, asection *input_section,
|
| 2442 |
|
|
bfd *output_bfd, char **error_message)
|
| 2443 |
|
|
{
|
| 2444 |
|
|
/* If this is a relocatable link (output_bfd test tells us), just
|
| 2445 |
|
|
call the generic function. Any adjustment will be done at final
|
| 2446 |
|
|
link time. */
|
| 2447 |
|
|
if (output_bfd != NULL)
|
| 2448 |
|
|
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
| 2449 |
|
|
input_section, output_bfd, error_message);
|
| 2450 |
|
|
|
| 2451 |
|
|
/* Subtract the symbol section base address. */
|
| 2452 |
|
|
reloc_entry->addend -= symbol->section->output_section->vma;
|
| 2453 |
|
|
|
| 2454 |
|
|
/* Adjust the addend for sign extension of the low 16 bits. */
|
| 2455 |
|
|
reloc_entry->addend += 0x8000;
|
| 2456 |
|
|
return bfd_reloc_continue;
|
| 2457 |
|
|
}
|
| 2458 |
|
|
|
| 2459 |
|
|
static bfd_reloc_status_type
|
| 2460 |
|
|
ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
|
| 2461 |
|
|
void *data, asection *input_section,
|
| 2462 |
|
|
bfd *output_bfd, char **error_message)
|
| 2463 |
|
|
{
|
| 2464 |
|
|
bfd_vma TOCstart;
|
| 2465 |
|
|
|
| 2466 |
|
|
/* If this is a relocatable link (output_bfd test tells us), just
|
| 2467 |
|
|
call the generic function. Any adjustment will be done at final
|
| 2468 |
|
|
link time. */
|
| 2469 |
|
|
if (output_bfd != NULL)
|
| 2470 |
|
|
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
| 2471 |
|
|
input_section, output_bfd, error_message);
|
| 2472 |
|
|
|
| 2473 |
|
|
TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
|
| 2474 |
|
|
if (TOCstart == 0)
|
| 2475 |
|
|
TOCstart = ppc64_elf_toc (input_section->output_section->owner);
|
| 2476 |
|
|
|
| 2477 |
|
|
/* Subtract the TOC base address. */
|
| 2478 |
|
|
reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
|
| 2479 |
|
|
return bfd_reloc_continue;
|
| 2480 |
|
|
}
|
| 2481 |
|
|
|
| 2482 |
|
|
static bfd_reloc_status_type
|
| 2483 |
|
|
ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
|
| 2484 |
|
|
void *data, asection *input_section,
|
| 2485 |
|
|
bfd *output_bfd, char **error_message)
|
| 2486 |
|
|
{
|
| 2487 |
|
|
bfd_vma TOCstart;
|
| 2488 |
|
|
|
| 2489 |
|
|
/* If this is a relocatable link (output_bfd test tells us), just
|
| 2490 |
|
|
call the generic function. Any adjustment will be done at final
|
| 2491 |
|
|
link time. */
|
| 2492 |
|
|
if (output_bfd != NULL)
|
| 2493 |
|
|
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
| 2494 |
|
|
input_section, output_bfd, error_message);
|
| 2495 |
|
|
|
| 2496 |
|
|
TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
|
| 2497 |
|
|
if (TOCstart == 0)
|
| 2498 |
|
|
TOCstart = ppc64_elf_toc (input_section->output_section->owner);
|
| 2499 |
|
|
|
| 2500 |
|
|
/* Subtract the TOC base address. */
|
| 2501 |
|
|
reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
|
| 2502 |
|
|
|
| 2503 |
|
|
/* Adjust the addend for sign extension of the low 16 bits. */
|
| 2504 |
|
|
reloc_entry->addend += 0x8000;
|
| 2505 |
|
|
return bfd_reloc_continue;
|
| 2506 |
|
|
}
|
| 2507 |
|
|
|
| 2508 |
|
|
static bfd_reloc_status_type
|
| 2509 |
|
|
ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
|
| 2510 |
|
|
void *data, asection *input_section,
|
| 2511 |
|
|
bfd *output_bfd, char **error_message)
|
| 2512 |
|
|
{
|
| 2513 |
|
|
bfd_vma TOCstart;
|
| 2514 |
|
|
bfd_size_type octets;
|
| 2515 |
|
|
|
| 2516 |
|
|
/* If this is a relocatable link (output_bfd test tells us), just
|
| 2517 |
|
|
call the generic function. Any adjustment will be done at final
|
| 2518 |
|
|
link time. */
|
| 2519 |
|
|
if (output_bfd != NULL)
|
| 2520 |
|
|
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
| 2521 |
|
|
input_section, output_bfd, error_message);
|
| 2522 |
|
|
|
| 2523 |
|
|
TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
|
| 2524 |
|
|
if (TOCstart == 0)
|
| 2525 |
|
|
TOCstart = ppc64_elf_toc (input_section->output_section->owner);
|
| 2526 |
|
|
|
| 2527 |
|
|
octets = reloc_entry->address * bfd_octets_per_byte (abfd);
|
| 2528 |
|
|
bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
|
| 2529 |
|
|
return bfd_reloc_ok;
|
| 2530 |
|
|
}
|
| 2531 |
|
|
|
| 2532 |
|
|
static bfd_reloc_status_type
|
| 2533 |
|
|
ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
|
| 2534 |
|
|
void *data, asection *input_section,
|
| 2535 |
|
|
bfd *output_bfd, char **error_message)
|
| 2536 |
|
|
{
|
| 2537 |
|
|
/* If this is a relocatable link (output_bfd test tells us), just
|
| 2538 |
|
|
call the generic function. Any adjustment will be done at final
|
| 2539 |
|
|
link time. */
|
| 2540 |
|
|
if (output_bfd != NULL)
|
| 2541 |
|
|
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
| 2542 |
|
|
input_section, output_bfd, error_message);
|
| 2543 |
|
|
|
| 2544 |
|
|
if (error_message != NULL)
|
| 2545 |
|
|
{
|
| 2546 |
|
|
static char buf[60];
|
| 2547 |
|
|
sprintf (buf, "generic linker can't handle %s",
|
| 2548 |
|
|
reloc_entry->howto->name);
|
| 2549 |
|
|
*error_message = buf;
|
| 2550 |
|
|
}
|
| 2551 |
|
|
return bfd_reloc_dangerous;
|
| 2552 |
|
|
}
|
| 2553 |
|
|
|
| 2554 |
|
|
/* Track GOT entries needed for a given symbol. We might need more
|
| 2555 |
|
|
than one got entry per symbol. */
|
| 2556 |
|
|
struct got_entry
|
| 2557 |
|
|
{
|
| 2558 |
|
|
struct got_entry *next;
|
| 2559 |
|
|
|
| 2560 |
|
|
/* The symbol addend that we'll be placing in the GOT. */
|
| 2561 |
|
|
bfd_vma addend;
|
| 2562 |
|
|
|
| 2563 |
|
|
/* Unlike other ELF targets, we use separate GOT entries for the same
|
| 2564 |
|
|
symbol referenced from different input files. This is to support
|
| 2565 |
|
|
automatic multiple TOC/GOT sections, where the TOC base can vary
|
| 2566 |
|
|
from one input file to another. After partitioning into TOC groups
|
| 2567 |
|
|
we merge entries within the group.
|
| 2568 |
|
|
|
| 2569 |
|
|
Point to the BFD owning this GOT entry. */
|
| 2570 |
|
|
bfd *owner;
|
| 2571 |
|
|
|
| 2572 |
|
|
/* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
|
| 2573 |
|
|
TLS_TPREL or TLS_DTPREL for tls entries. */
|
| 2574 |
|
|
unsigned char tls_type;
|
| 2575 |
|
|
|
| 2576 |
|
|
/* Non-zero if got.ent points to real entry. */
|
| 2577 |
|
|
unsigned char is_indirect;
|
| 2578 |
|
|
|
| 2579 |
|
|
/* Reference count until size_dynamic_sections, GOT offset thereafter. */
|
| 2580 |
|
|
union
|
| 2581 |
|
|
{
|
| 2582 |
|
|
bfd_signed_vma refcount;
|
| 2583 |
|
|
bfd_vma offset;
|
| 2584 |
|
|
struct got_entry *ent;
|
| 2585 |
|
|
} got;
|
| 2586 |
|
|
};
|
| 2587 |
|
|
|
| 2588 |
|
|
/* The same for PLT. */
|
| 2589 |
|
|
struct plt_entry
|
| 2590 |
|
|
{
|
| 2591 |
|
|
struct plt_entry *next;
|
| 2592 |
|
|
|
| 2593 |
|
|
bfd_vma addend;
|
| 2594 |
|
|
|
| 2595 |
|
|
union
|
| 2596 |
|
|
{
|
| 2597 |
|
|
bfd_signed_vma refcount;
|
| 2598 |
|
|
bfd_vma offset;
|
| 2599 |
|
|
} plt;
|
| 2600 |
|
|
};
|
| 2601 |
|
|
|
| 2602 |
|
|
struct ppc64_elf_obj_tdata
|
| 2603 |
|
|
{
|
| 2604 |
|
|
struct elf_obj_tdata elf;
|
| 2605 |
|
|
|
| 2606 |
|
|
/* Shortcuts to dynamic linker sections. */
|
| 2607 |
|
|
asection *got;
|
| 2608 |
|
|
asection *relgot;
|
| 2609 |
|
|
|
| 2610 |
|
|
/* Used during garbage collection. We attach global symbols defined
|
| 2611 |
|
|
on removed .opd entries to this section so that the sym is removed. */
|
| 2612 |
|
|
asection *deleted_section;
|
| 2613 |
|
|
|
| 2614 |
|
|
/* TLS local dynamic got entry handling. Support for multiple GOT
|
| 2615 |
|
|
sections means we potentially need one of these for each input bfd. */
|
| 2616 |
|
|
struct got_entry tlsld_got;
|
| 2617 |
|
|
|
| 2618 |
|
|
/* A copy of relocs before they are modified for --emit-relocs. */
|
| 2619 |
|
|
Elf_Internal_Rela *opd_relocs;
|
| 2620 |
|
|
|
| 2621 |
|
|
/* Nonzero if this bfd has small toc/got relocs, ie. that expect
|
| 2622 |
|
|
the reloc to be in the range -32768 to 32767. */
|
| 2623 |
163 |
khays |
unsigned int has_small_toc_reloc : 1;
|
| 2624 |
|
|
|
| 2625 |
|
|
/* Set if toc/got ha relocs detected not using r2, or lo reloc
|
| 2626 |
|
|
instruction not one we handle. */
|
| 2627 |
|
|
unsigned int unexpected_toc_insn : 1;
|
| 2628 |
14 |
khays |
};
|
| 2629 |
|
|
|
| 2630 |
|
|
#define ppc64_elf_tdata(bfd) \
|
| 2631 |
|
|
((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
|
| 2632 |
|
|
|
| 2633 |
|
|
#define ppc64_tlsld_got(bfd) \
|
| 2634 |
|
|
(&ppc64_elf_tdata (bfd)->tlsld_got)
|
| 2635 |
|
|
|
| 2636 |
|
|
#define is_ppc64_elf(bfd) \
|
| 2637 |
|
|
(bfd_get_flavour (bfd) == bfd_target_elf_flavour \
|
| 2638 |
|
|
&& elf_object_id (bfd) == PPC64_ELF_DATA)
|
| 2639 |
|
|
|
| 2640 |
|
|
/* Override the generic function because we store some extras. */
|
| 2641 |
|
|
|
| 2642 |
|
|
static bfd_boolean
|
| 2643 |
|
|
ppc64_elf_mkobject (bfd *abfd)
|
| 2644 |
|
|
{
|
| 2645 |
|
|
return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata),
|
| 2646 |
|
|
PPC64_ELF_DATA);
|
| 2647 |
|
|
}
|
| 2648 |
|
|
|
| 2649 |
|
|
/* Fix bad default arch selected for a 64 bit input bfd when the
|
| 2650 |
|
|
default is 32 bit. */
|
| 2651 |
|
|
|
| 2652 |
|
|
static bfd_boolean
|
| 2653 |
|
|
ppc64_elf_object_p (bfd *abfd)
|
| 2654 |
|
|
{
|
| 2655 |
|
|
if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
|
| 2656 |
|
|
{
|
| 2657 |
|
|
Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
|
| 2658 |
|
|
|
| 2659 |
|
|
if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
|
| 2660 |
|
|
{
|
| 2661 |
|
|
/* Relies on arch after 32 bit default being 64 bit default. */
|
| 2662 |
|
|
abfd->arch_info = abfd->arch_info->next;
|
| 2663 |
|
|
BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
|
| 2664 |
|
|
}
|
| 2665 |
|
|
}
|
| 2666 |
|
|
return TRUE;
|
| 2667 |
|
|
}
|
| 2668 |
|
|
|
| 2669 |
|
|
/* Support for core dump NOTE sections. */
|
| 2670 |
|
|
|
| 2671 |
|
|
static bfd_boolean
|
| 2672 |
|
|
ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
|
| 2673 |
|
|
{
|
| 2674 |
|
|
size_t offset, size;
|
| 2675 |
|
|
|
| 2676 |
|
|
if (note->descsz != 504)
|
| 2677 |
|
|
return FALSE;
|
| 2678 |
|
|
|
| 2679 |
|
|
/* pr_cursig */
|
| 2680 |
|
|
elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
|
| 2681 |
|
|
|
| 2682 |
|
|
/* pr_pid */
|
| 2683 |
|
|
elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 32);
|
| 2684 |
|
|
|
| 2685 |
|
|
/* pr_reg */
|
| 2686 |
|
|
offset = 112;
|
| 2687 |
|
|
size = 384;
|
| 2688 |
|
|
|
| 2689 |
|
|
/* Make a ".reg/999" section. */
|
| 2690 |
|
|
return _bfd_elfcore_make_pseudosection (abfd, ".reg",
|
| 2691 |
|
|
size, note->descpos + offset);
|
| 2692 |
|
|
}
|
| 2693 |
|
|
|
| 2694 |
|
|
static bfd_boolean
|
| 2695 |
|
|
ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
|
| 2696 |
|
|
{
|
| 2697 |
|
|
if (note->descsz != 136)
|
| 2698 |
|
|
return FALSE;
|
| 2699 |
|
|
|
| 2700 |
|
|
elf_tdata (abfd)->core_pid
|
| 2701 |
|
|
= bfd_get_32 (abfd, note->descdata + 24);
|
| 2702 |
|
|
elf_tdata (abfd)->core_program
|
| 2703 |
|
|
= _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
|
| 2704 |
|
|
elf_tdata (abfd)->core_command
|
| 2705 |
|
|
= _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
|
| 2706 |
|
|
|
| 2707 |
|
|
return TRUE;
|
| 2708 |
|
|
}
|
| 2709 |
|
|
|
| 2710 |
|
|
static char *
|
| 2711 |
|
|
ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
|
| 2712 |
|
|
...)
|
| 2713 |
|
|
{
|
| 2714 |
|
|
switch (note_type)
|
| 2715 |
|
|
{
|
| 2716 |
|
|
default:
|
| 2717 |
|
|
return NULL;
|
| 2718 |
|
|
|
| 2719 |
|
|
case NT_PRPSINFO:
|
| 2720 |
|
|
{
|
| 2721 |
|
|
char data[136];
|
| 2722 |
|
|
va_list ap;
|
| 2723 |
|
|
|
| 2724 |
|
|
va_start (ap, note_type);
|
| 2725 |
166 |
khays |
memset (data, 0, sizeof (data));
|
| 2726 |
14 |
khays |
strncpy (data + 40, va_arg (ap, const char *), 16);
|
| 2727 |
|
|
strncpy (data + 56, va_arg (ap, const char *), 80);
|
| 2728 |
|
|
va_end (ap);
|
| 2729 |
|
|
return elfcore_write_note (abfd, buf, bufsiz,
|
| 2730 |
|
|
"CORE", note_type, data, sizeof (data));
|
| 2731 |
|
|
}
|
| 2732 |
|
|
|
| 2733 |
|
|
case NT_PRSTATUS:
|
| 2734 |
|
|
{
|
| 2735 |
|
|
char data[504];
|
| 2736 |
|
|
va_list ap;
|
| 2737 |
|
|
long pid;
|
| 2738 |
|
|
int cursig;
|
| 2739 |
|
|
const void *greg;
|
| 2740 |
|
|
|
| 2741 |
|
|
va_start (ap, note_type);
|
| 2742 |
|
|
memset (data, 0, 112);
|
| 2743 |
|
|
pid = va_arg (ap, long);
|
| 2744 |
|
|
bfd_put_32 (abfd, pid, data + 32);
|
| 2745 |
|
|
cursig = va_arg (ap, int);
|
| 2746 |
|
|
bfd_put_16 (abfd, cursig, data + 12);
|
| 2747 |
|
|
greg = va_arg (ap, const void *);
|
| 2748 |
|
|
memcpy (data + 112, greg, 384);
|
| 2749 |
|
|
memset (data + 496, 0, 8);
|
| 2750 |
|
|
va_end (ap);
|
| 2751 |
|
|
return elfcore_write_note (abfd, buf, bufsiz,
|
| 2752 |
|
|
"CORE", note_type, data, sizeof (data));
|
| 2753 |
|
|
}
|
| 2754 |
|
|
}
|
| 2755 |
|
|
}
|
| 2756 |
|
|
|
| 2757 |
|
|
/* Add extra PPC sections. */
|
| 2758 |
|
|
|
| 2759 |
|
|
static const struct bfd_elf_special_section ppc64_elf_special_sections[]=
|
| 2760 |
|
|
{
|
| 2761 |
|
|
{ STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 },
|
| 2762 |
|
|
{ STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
|
| 2763 |
|
|
{ STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
|
| 2764 |
|
|
{ STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
|
| 2765 |
|
|
{ STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
|
| 2766 |
|
|
{ STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
|
| 2767 |
|
|
{ NULL, 0, 0, 0, 0 }
|
| 2768 |
|
|
};
|
| 2769 |
|
|
|
| 2770 |
|
|
enum _ppc64_sec_type {
|
| 2771 |
|
|
sec_normal = 0,
|
| 2772 |
|
|
sec_opd = 1,
|
| 2773 |
|
|
sec_toc = 2
|
| 2774 |
|
|
};
|
| 2775 |
|
|
|
| 2776 |
|
|
struct _ppc64_elf_section_data
|
| 2777 |
|
|
{
|
| 2778 |
|
|
struct bfd_elf_section_data elf;
|
| 2779 |
|
|
|
| 2780 |
|
|
union
|
| 2781 |
|
|
{
|
| 2782 |
|
|
/* An array with one entry for each opd function descriptor. */
|
| 2783 |
|
|
struct _opd_sec_data
|
| 2784 |
|
|
{
|
| 2785 |
|
|
/* Points to the function code section for local opd entries. */
|
| 2786 |
|
|
asection **func_sec;
|
| 2787 |
|
|
|
| 2788 |
|
|
/* After editing .opd, adjust references to opd local syms. */
|
| 2789 |
|
|
long *adjust;
|
| 2790 |
|
|
} opd;
|
| 2791 |
|
|
|
| 2792 |
|
|
/* An array for toc sections, indexed by offset/8. */
|
| 2793 |
|
|
struct _toc_sec_data
|
| 2794 |
|
|
{
|
| 2795 |
|
|
/* Specifies the relocation symbol index used at a given toc offset. */
|
| 2796 |
|
|
unsigned *symndx;
|
| 2797 |
|
|
|
| 2798 |
|
|
/* And the relocation addend. */
|
| 2799 |
|
|
bfd_vma *add;
|
| 2800 |
|
|
} toc;
|
| 2801 |
|
|
} u;
|
| 2802 |
|
|
|
| 2803 |
|
|
enum _ppc64_sec_type sec_type:2;
|
| 2804 |
|
|
|
| 2805 |
|
|
/* Flag set when small branches are detected. Used to
|
| 2806 |
|
|
select suitable defaults for the stub group size. */
|
| 2807 |
|
|
unsigned int has_14bit_branch:1;
|
| 2808 |
|
|
};
|
| 2809 |
|
|
|
| 2810 |
|
|
#define ppc64_elf_section_data(sec) \
|
| 2811 |
|
|
((struct _ppc64_elf_section_data *) elf_section_data (sec))
|
| 2812 |
|
|
|
| 2813 |
|
|
static bfd_boolean
|
| 2814 |
|
|
ppc64_elf_new_section_hook (bfd *abfd, asection *sec)
|
| 2815 |
|
|
{
|
| 2816 |
|
|
if (!sec->used_by_bfd)
|
| 2817 |
|
|
{
|
| 2818 |
|
|
struct _ppc64_elf_section_data *sdata;
|
| 2819 |
|
|
bfd_size_type amt = sizeof (*sdata);
|
| 2820 |
|
|
|
| 2821 |
|
|
sdata = bfd_zalloc (abfd, amt);
|
| 2822 |
|
|
if (sdata == NULL)
|
| 2823 |
|
|
return FALSE;
|
| 2824 |
|
|
sec->used_by_bfd = sdata;
|
| 2825 |
|
|
}
|
| 2826 |
|
|
|
| 2827 |
|
|
return _bfd_elf_new_section_hook (abfd, sec);
|
| 2828 |
|
|
}
|
| 2829 |
|
|
|
| 2830 |
|
|
static struct _opd_sec_data *
|
| 2831 |
|
|
get_opd_info (asection * sec)
|
| 2832 |
|
|
{
|
| 2833 |
|
|
if (sec != NULL
|
| 2834 |
|
|
&& ppc64_elf_section_data (sec) != NULL
|
| 2835 |
|
|
&& ppc64_elf_section_data (sec)->sec_type == sec_opd)
|
| 2836 |
|
|
return &ppc64_elf_section_data (sec)->u.opd;
|
| 2837 |
|
|
return NULL;
|
| 2838 |
|
|
}
|
| 2839 |
|
|
|
| 2840 |
|
|
/* Parameters for the qsort hook. */
|
| 2841 |
|
|
static bfd_boolean synthetic_relocatable;
|
| 2842 |
|
|
|
| 2843 |
|
|
/* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
|
| 2844 |
|
|
|
| 2845 |
|
|
static int
|
| 2846 |
|
|
compare_symbols (const void *ap, const void *bp)
|
| 2847 |
|
|
{
|
| 2848 |
|
|
const asymbol *a = * (const asymbol **) ap;
|
| 2849 |
|
|
const asymbol *b = * (const asymbol **) bp;
|
| 2850 |
|
|
|
| 2851 |
|
|
/* Section symbols first. */
|
| 2852 |
|
|
if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM))
|
| 2853 |
|
|
return -1;
|
| 2854 |
|
|
if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM))
|
| 2855 |
|
|
return 1;
|
| 2856 |
|
|
|
| 2857 |
|
|
/* then .opd symbols. */
|
| 2858 |
|
|
if (strcmp (a->section->name, ".opd") == 0
|
| 2859 |
|
|
&& strcmp (b->section->name, ".opd") != 0)
|
| 2860 |
|
|
return -1;
|
| 2861 |
|
|
if (strcmp (a->section->name, ".opd") != 0
|
| 2862 |
|
|
&& strcmp (b->section->name, ".opd") == 0)
|
| 2863 |
|
|
return 1;
|
| 2864 |
|
|
|
| 2865 |
|
|
/* then other code symbols. */
|
| 2866 |
|
|
if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
|
| 2867 |
|
|
== (SEC_CODE | SEC_ALLOC)
|
| 2868 |
|
|
&& (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
|
| 2869 |
|
|
!= (SEC_CODE | SEC_ALLOC))
|
| 2870 |
|
|
return -1;
|
| 2871 |
|
|
|
| 2872 |
|
|
if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
|
| 2873 |
|
|
!= (SEC_CODE | SEC_ALLOC)
|
| 2874 |
|
|
&& (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
|
| 2875 |
|
|
== (SEC_CODE | SEC_ALLOC))
|
| 2876 |
|
|
return 1;
|
| 2877 |
|
|
|
| 2878 |
|
|
if (synthetic_relocatable)
|
| 2879 |
|
|
{
|
| 2880 |
|
|
if (a->section->id < b->section->id)
|
| 2881 |
|
|
return -1;
|
| 2882 |
|
|
|
| 2883 |
|
|
if (a->section->id > b->section->id)
|
| 2884 |
|
|
return 1;
|
| 2885 |
|
|
}
|
| 2886 |
|
|
|
| 2887 |
|
|
if (a->value + a->section->vma < b->value + b->section->vma)
|
| 2888 |
|
|
return -1;
|
| 2889 |
|
|
|
| 2890 |
|
|
if (a->value + a->section->vma > b->value + b->section->vma)
|
| 2891 |
|
|
return 1;
|
| 2892 |
|
|
|
| 2893 |
|
|
/* For syms with the same value, prefer strong dynamic global function
|
| 2894 |
|
|
syms over other syms. */
|
| 2895 |
|
|
if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0)
|
| 2896 |
|
|
return -1;
|
| 2897 |
|
|
|
| 2898 |
|
|
if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0)
|
| 2899 |
|
|
return 1;
|
| 2900 |
|
|
|
| 2901 |
|
|
if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0)
|
| 2902 |
|
|
return -1;
|
| 2903 |
|
|
|
| 2904 |
|
|
if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0)
|
| 2905 |
|
|
return 1;
|
| 2906 |
|
|
|
| 2907 |
|
|
if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0)
|
| 2908 |
|
|
return -1;
|
| 2909 |
|
|
|
| 2910 |
|
|
if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0)
|
| 2911 |
|
|
return 1;
|
| 2912 |
|
|
|
| 2913 |
|
|
if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0)
|
| 2914 |
|
|
return -1;
|
| 2915 |
|
|
|
| 2916 |
|
|
if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0)
|
| 2917 |
|
|
return 1;
|
| 2918 |
|
|
|
| 2919 |
|
|
return 0;
|
| 2920 |
|
|
}
|
| 2921 |
|
|
|
| 2922 |
|
|
/* Search SYMS for a symbol of the given VALUE. */
|
| 2923 |
|
|
|
| 2924 |
|
|
static asymbol *
|
| 2925 |
|
|
sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value)
|
| 2926 |
|
|
{
|
| 2927 |
|
|
long mid;
|
| 2928 |
|
|
|
| 2929 |
|
|
if (id == -1)
|
| 2930 |
|
|
{
|
| 2931 |
|
|
while (lo < hi)
|
| 2932 |
|
|
{
|
| 2933 |
|
|
mid = (lo + hi) >> 1;
|
| 2934 |
|
|
if (syms[mid]->value + syms[mid]->section->vma < value)
|
| 2935 |
|
|
lo = mid + 1;
|
| 2936 |
|
|
else if (syms[mid]->value + syms[mid]->section->vma > value)
|
| 2937 |
|
|
hi = mid;
|
| 2938 |
|
|
else
|
| 2939 |
|
|
return syms[mid];
|
| 2940 |
|
|
}
|
| 2941 |
|
|
}
|
| 2942 |
|
|
else
|
| 2943 |
|
|
{
|
| 2944 |
|
|
while (lo < hi)
|
| 2945 |
|
|
{
|
| 2946 |
|
|
mid = (lo + hi) >> 1;
|
| 2947 |
|
|
if (syms[mid]->section->id < id)
|
| 2948 |
|
|
lo = mid + 1;
|
| 2949 |
|
|
else if (syms[mid]->section->id > id)
|
| 2950 |
|
|
hi = mid;
|
| 2951 |
|
|
else if (syms[mid]->value < value)
|
| 2952 |
|
|
lo = mid + 1;
|
| 2953 |
|
|
else if (syms[mid]->value > value)
|
| 2954 |
|
|
hi = mid;
|
| 2955 |
|
|
else
|
| 2956 |
|
|
return syms[mid];
|
| 2957 |
|
|
}
|
| 2958 |
|
|
}
|
| 2959 |
|
|
return NULL;
|
| 2960 |
|
|
}
|
| 2961 |
|
|
|
| 2962 |
|
|
static bfd_boolean
|
| 2963 |
|
|
section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
|
| 2964 |
|
|
{
|
| 2965 |
|
|
bfd_vma vma = *(bfd_vma *) ptr;
|
| 2966 |
|
|
return ((section->flags & SEC_ALLOC) != 0
|
| 2967 |
|
|
&& section->vma <= vma
|
| 2968 |
|
|
&& vma < section->vma + section->size);
|
| 2969 |
|
|
}
|
| 2970 |
|
|
|
| 2971 |
|
|
/* Create synthetic symbols, effectively restoring "dot-symbol" function
|
| 2972 |
|
|
entry syms. Also generate @plt symbols for the glink branch table. */
|
| 2973 |
|
|
|
| 2974 |
|
|
static long
|
| 2975 |
|
|
ppc64_elf_get_synthetic_symtab (bfd *abfd,
|
| 2976 |
|
|
long static_count, asymbol **static_syms,
|
| 2977 |
|
|
long dyn_count, asymbol **dyn_syms,
|
| 2978 |
|
|
asymbol **ret)
|
| 2979 |
|
|
{
|
| 2980 |
|
|
asymbol *s;
|
| 2981 |
|
|
long i;
|
| 2982 |
|
|
long count;
|
| 2983 |
|
|
char *names;
|
| 2984 |
|
|
long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
|
| 2985 |
|
|
asection *opd;
|
| 2986 |
|
|
bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
|
| 2987 |
|
|
asymbol **syms;
|
| 2988 |
|
|
|
| 2989 |
|
|
*ret = NULL;
|
| 2990 |
|
|
|
| 2991 |
|
|
opd = bfd_get_section_by_name (abfd, ".opd");
|
| 2992 |
|
|
if (opd == NULL)
|
| 2993 |
|
|
return 0;
|
| 2994 |
|
|
|
| 2995 |
|
|
symcount = static_count;
|
| 2996 |
|
|
if (!relocatable)
|
| 2997 |
|
|
symcount += dyn_count;
|
| 2998 |
|
|
if (symcount == 0)
|
| 2999 |
|
|
return 0;
|
| 3000 |
|
|
|
| 3001 |
|
|
syms = bfd_malloc ((symcount + 1) * sizeof (*syms));
|
| 3002 |
|
|
if (syms == NULL)
|
| 3003 |
|
|
return -1;
|
| 3004 |
|
|
|
| 3005 |
|
|
if (!relocatable && static_count != 0 && dyn_count != 0)
|
| 3006 |
|
|
{
|
| 3007 |
|
|
/* Use both symbol tables. */
|
| 3008 |
|
|
memcpy (syms, static_syms, static_count * sizeof (*syms));
|
| 3009 |
|
|
memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms));
|
| 3010 |
|
|
}
|
| 3011 |
|
|
else if (!relocatable && static_count == 0)
|
| 3012 |
|
|
memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms));
|
| 3013 |
|
|
else
|
| 3014 |
|
|
memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms));
|
| 3015 |
|
|
|
| 3016 |
|
|
synthetic_relocatable = relocatable;
|
| 3017 |
|
|
qsort (syms, symcount, sizeof (*syms), compare_symbols);
|
| 3018 |
|
|
|
| 3019 |
|
|
if (!relocatable && symcount > 1)
|
| 3020 |
|
|
{
|
| 3021 |
|
|
long j;
|
| 3022 |
|
|
/* Trim duplicate syms, since we may have merged the normal and
|
| 3023 |
|
|
dynamic symbols. Actually, we only care about syms that have
|
| 3024 |
|
|
different values, so trim any with the same value. */
|
| 3025 |
|
|
for (i = 1, j = 1; i < symcount; ++i)
|
| 3026 |
|
|
if (syms[i - 1]->value + syms[i - 1]->section->vma
|
| 3027 |
|
|
!= syms[i]->value + syms[i]->section->vma)
|
| 3028 |
|
|
syms[j++] = syms[i];
|
| 3029 |
|
|
symcount = j;
|
| 3030 |
|
|
}
|
| 3031 |
|
|
|
| 3032 |
|
|
i = 0;
|
| 3033 |
|
|
if (strcmp (syms[i]->section->name, ".opd") == 0)
|
| 3034 |
|
|
++i;
|
| 3035 |
|
|
codesecsym = i;
|
| 3036 |
|
|
|
| 3037 |
|
|
for (; i < symcount; ++i)
|
| 3038 |
|
|
if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
|
| 3039 |
|
|
!= (SEC_CODE | SEC_ALLOC))
|
| 3040 |
|
|
|| (syms[i]->flags & BSF_SECTION_SYM) == 0)
|
| 3041 |
|
|
break;
|
| 3042 |
|
|
codesecsymend = i;
|
| 3043 |
|
|
|
| 3044 |
|
|
for (; i < symcount; ++i)
|
| 3045 |
|
|
if ((syms[i]->flags & BSF_SECTION_SYM) == 0)
|
| 3046 |
|
|
break;
|
| 3047 |
|
|
secsymend = i;
|
| 3048 |
|
|
|
| 3049 |
|
|
for (; i < symcount; ++i)
|
| 3050 |
|
|
if (strcmp (syms[i]->section->name, ".opd") != 0)
|
| 3051 |
|
|
break;
|
| 3052 |
|
|
opdsymend = i;
|
| 3053 |
|
|
|
| 3054 |
|
|
for (; i < symcount; ++i)
|
| 3055 |
|
|
if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))
|
| 3056 |
|
|
!= (SEC_CODE | SEC_ALLOC))
|
| 3057 |
|
|
break;
|
| 3058 |
|
|
symcount = i;
|
| 3059 |
|
|
|
| 3060 |
|
|
count = 0;
|
| 3061 |
|
|
|
| 3062 |
|
|
if (relocatable)
|
| 3063 |
|
|
{
|
| 3064 |
|
|
bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
|
| 3065 |
|
|
arelent *r;
|
| 3066 |
|
|
size_t size;
|
| 3067 |
|
|
long relcount;
|
| 3068 |
|
|
|
| 3069 |
|
|
if (opdsymend == secsymend)
|
| 3070 |
|
|
goto done;
|
| 3071 |
|
|
|
| 3072 |
|
|
slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
|
| 3073 |
|
|
relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0;
|
| 3074 |
|
|
if (relcount == 0)
|
| 3075 |
|
|
goto done;
|
| 3076 |
|
|
|
| 3077 |
|
|
if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE))
|
| 3078 |
|
|
{
|
| 3079 |
|
|
count = -1;
|
| 3080 |
|
|
goto done;
|
| 3081 |
|
|
}
|
| 3082 |
|
|
|
| 3083 |
|
|
size = 0;
|
| 3084 |
|
|
for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
|
| 3085 |
|
|
{
|
| 3086 |
|
|
asymbol *sym;
|
| 3087 |
|
|
|
| 3088 |
|
|
while (r < opd->relocation + relcount
|
| 3089 |
|
|
&& r->address < syms[i]->value + opd->vma)
|
| 3090 |
|
|
++r;
|
| 3091 |
|
|
|
| 3092 |
|
|
if (r == opd->relocation + relcount)
|
| 3093 |
|
|
break;
|
| 3094 |
|
|
|
| 3095 |
|
|
if (r->address != syms[i]->value + opd->vma)
|
| 3096 |
|
|
continue;
|
| 3097 |
|
|
|
| 3098 |
|
|
if (r->howto->type != R_PPC64_ADDR64)
|
| 3099 |
|
|
continue;
|
| 3100 |
|
|
|
| 3101 |
|
|
sym = *r->sym_ptr_ptr;
|
| 3102 |
|
|
if (!sym_exists_at (syms, opdsymend, symcount,
|
| 3103 |
|
|
sym->section->id, sym->value + r->addend))
|
| 3104 |
|
|
{
|
| 3105 |
|
|
++count;
|
| 3106 |
|
|
size += sizeof (asymbol);
|
| 3107 |
|
|
size += strlen (syms[i]->name) + 2;
|
| 3108 |
|
|
}
|
| 3109 |
|
|
}
|
| 3110 |
|
|
|
| 3111 |
|
|
s = *ret = bfd_malloc (size);
|
| 3112 |
|
|
if (s == NULL)
|
| 3113 |
|
|
{
|
| 3114 |
|
|
count = -1;
|
| 3115 |
|
|
goto done;
|
| 3116 |
|
|
}
|
| 3117 |
|
|
|
| 3118 |
|
|
names = (char *) (s + count);
|
| 3119 |
|
|
|
| 3120 |
|
|
for (i = secsymend, r = opd->relocation; i < opdsymend; ++i)
|
| 3121 |
|
|
{
|
| 3122 |
|
|
asymbol *sym;
|
| 3123 |
|
|
|
| 3124 |
|
|
while (r < opd->relocation + relcount
|
| 3125 |
|
|
&& r->address < syms[i]->value + opd->vma)
|
| 3126 |
|
|
++r;
|
| 3127 |
|
|
|
| 3128 |
|
|
if (r == opd->relocation + relcount)
|
| 3129 |
|
|
break;
|
| 3130 |
|
|
|
| 3131 |
|
|
if (r->address != syms[i]->value + opd->vma)
|
| 3132 |
|
|
continue;
|
| 3133 |
|
|
|
| 3134 |
|
|
if (r->howto->type != R_PPC64_ADDR64)
|
| 3135 |
|
|
continue;
|
| 3136 |
|
|
|
| 3137 |
|
|
sym = *r->sym_ptr_ptr;
|
| 3138 |
|
|
if (!sym_exists_at (syms, opdsymend, symcount,
|
| 3139 |
|
|
sym->section->id, sym->value + r->addend))
|
| 3140 |
|
|
{
|
| 3141 |
|
|
size_t len;
|
| 3142 |
|
|
|
| 3143 |
|
|
*s = *syms[i];
|
| 3144 |
|
|
s->flags |= BSF_SYNTHETIC;
|
| 3145 |
|
|
s->section = sym->section;
|
| 3146 |
|
|
s->value = sym->value + r->addend;
|
| 3147 |
|
|
s->name = names;
|
| 3148 |
|
|
*names++ = '.';
|
| 3149 |
|
|
len = strlen (syms[i]->name);
|
| 3150 |
|
|
memcpy (names, syms[i]->name, len + 1);
|
| 3151 |
|
|
names += len + 1;
|
| 3152 |
|
|
/* Have udata.p point back to the original symbol this
|
| 3153 |
|
|
synthetic symbol was derived from. */
|
| 3154 |
|
|
s->udata.p = syms[i];
|
| 3155 |
|
|
s++;
|
| 3156 |
|
|
}
|
| 3157 |
|
|
}
|
| 3158 |
|
|
}
|
| 3159 |
|
|
else
|
| 3160 |
|
|
{
|
| 3161 |
|
|
bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
|
| 3162 |
|
|
bfd_byte *contents;
|
| 3163 |
|
|
size_t size;
|
| 3164 |
|
|
long plt_count = 0;
|
| 3165 |
|
|
bfd_vma glink_vma = 0, resolv_vma = 0;
|
| 3166 |
|
|
asection *dynamic, *glink = NULL, *relplt = NULL;
|
| 3167 |
|
|
arelent *p;
|
| 3168 |
|
|
|
| 3169 |
|
|
if (!bfd_malloc_and_get_section (abfd, opd, &contents))
|
| 3170 |
|
|
{
|
| 3171 |
|
|
if (contents)
|
| 3172 |
|
|
{
|
| 3173 |
|
|
free_contents_and_exit:
|
| 3174 |
|
|
free (contents);
|
| 3175 |
|
|
}
|
| 3176 |
|
|
count = -1;
|
| 3177 |
|
|
goto done;
|
| 3178 |
|
|
}
|
| 3179 |
|
|
|
| 3180 |
|
|
size = 0;
|
| 3181 |
|
|
for (i = secsymend; i < opdsymend; ++i)
|
| 3182 |
|
|
{
|
| 3183 |
|
|
bfd_vma ent;
|
| 3184 |
|
|
|
| 3185 |
|
|
/* Ignore bogus symbols. */
|
| 3186 |
|
|
if (syms[i]->value > opd->size - 8)
|
| 3187 |
|
|
continue;
|
| 3188 |
|
|
|
| 3189 |
|
|
ent = bfd_get_64 (abfd, contents + syms[i]->value);
|
| 3190 |
|
|
if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
|
| 3191 |
|
|
{
|
| 3192 |
|
|
++count;
|
| 3193 |
|
|
size += sizeof (asymbol);
|
| 3194 |
|
|
size += strlen (syms[i]->name) + 2;
|
| 3195 |
|
|
}
|
| 3196 |
|
|
}
|
| 3197 |
|
|
|
| 3198 |
|
|
/* Get start of .glink stubs from DT_PPC64_GLINK. */
|
| 3199 |
|
|
if (dyn_count != 0
|
| 3200 |
|
|
&& (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL)
|
| 3201 |
|
|
{
|
| 3202 |
|
|
bfd_byte *dynbuf, *extdyn, *extdynend;
|
| 3203 |
|
|
size_t extdynsize;
|
| 3204 |
|
|
void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
|
| 3205 |
|
|
|
| 3206 |
|
|
if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
|
| 3207 |
|
|
goto free_contents_and_exit;
|
| 3208 |
|
|
|
| 3209 |
|
|
extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
|
| 3210 |
|
|
swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
|
| 3211 |
|
|
|
| 3212 |
|
|
extdyn = dynbuf;
|
| 3213 |
|
|
extdynend = extdyn + dynamic->size;
|
| 3214 |
|
|
for (; extdyn < extdynend; extdyn += extdynsize)
|
| 3215 |
|
|
{
|
| 3216 |
|
|
Elf_Internal_Dyn dyn;
|
| 3217 |
|
|
(*swap_dyn_in) (abfd, extdyn, &dyn);
|
| 3218 |
|
|
|
| 3219 |
|
|
if (dyn.d_tag == DT_NULL)
|
| 3220 |
|
|
break;
|
| 3221 |
|
|
|
| 3222 |
|
|
if (dyn.d_tag == DT_PPC64_GLINK)
|
| 3223 |
|
|
{
|
| 3224 |
|
|
/* The first glink stub starts at offset 32; see comment in
|
| 3225 |
|
|
ppc64_elf_finish_dynamic_sections. */
|
| 3226 |
|
|
glink_vma = dyn.d_un.d_val + 32;
|
| 3227 |
|
|
/* The .glink section usually does not survive the final
|
| 3228 |
|
|
link; search for the section (usually .text) where the
|
| 3229 |
|
|
glink stubs now reside. */
|
| 3230 |
|
|
glink = bfd_sections_find_if (abfd, section_covers_vma,
|
| 3231 |
|
|
&glink_vma);
|
| 3232 |
|
|
break;
|
| 3233 |
|
|
}
|
| 3234 |
|
|
}
|
| 3235 |
|
|
|
| 3236 |
|
|
free (dynbuf);
|
| 3237 |
|
|
}
|
| 3238 |
|
|
|
| 3239 |
|
|
if (glink != NULL)
|
| 3240 |
|
|
{
|
| 3241 |
|
|
/* Determine __glink trampoline by reading the relative branch
|
| 3242 |
|
|
from the first glink stub. */
|
| 3243 |
|
|
bfd_byte buf[4];
|
| 3244 |
|
|
if (bfd_get_section_contents (abfd, glink, buf,
|
| 3245 |
|
|
glink_vma + 4 - glink->vma, 4))
|
| 3246 |
|
|
{
|
| 3247 |
|
|
unsigned int insn = bfd_get_32 (abfd, buf);
|
| 3248 |
|
|
insn ^= B_DOT;
|
| 3249 |
|
|
if ((insn & ~0x3fffffc) == 0)
|
| 3250 |
|
|
resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000;
|
| 3251 |
|
|
}
|
| 3252 |
|
|
|
| 3253 |
|
|
if (resolv_vma)
|
| 3254 |
|
|
size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
|
| 3255 |
|
|
|
| 3256 |
|
|
relplt = bfd_get_section_by_name (abfd, ".rela.plt");
|
| 3257 |
|
|
if (relplt != NULL)
|
| 3258 |
|
|
{
|
| 3259 |
|
|
slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
|
| 3260 |
|
|
if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
|
| 3261 |
|
|
goto free_contents_and_exit;
|
| 3262 |
|
|
|
| 3263 |
|
|
plt_count = relplt->size / sizeof (Elf64_External_Rela);
|
| 3264 |
|
|
size += plt_count * sizeof (asymbol);
|
| 3265 |
|
|
|
| 3266 |
|
|
p = relplt->relocation;
|
| 3267 |
|
|
for (i = 0; i < plt_count; i++, p++)
|
| 3268 |
|
|
{
|
| 3269 |
|
|
size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
|
| 3270 |
|
|
if (p->addend != 0)
|
| 3271 |
|
|
size += sizeof ("+0x") - 1 + 16;
|
| 3272 |
|
|
}
|
| 3273 |
|
|
}
|
| 3274 |
|
|
}
|
| 3275 |
|
|
|
| 3276 |
|
|
s = *ret = bfd_malloc (size);
|
| 3277 |
|
|
if (s == NULL)
|
| 3278 |
|
|
goto free_contents_and_exit;
|
| 3279 |
|
|
|
| 3280 |
|
|
names = (char *) (s + count + plt_count + (resolv_vma != 0));
|
| 3281 |
|
|
|
| 3282 |
|
|
for (i = secsymend; i < opdsymend; ++i)
|
| 3283 |
|
|
{
|
| 3284 |
|
|
bfd_vma ent;
|
| 3285 |
|
|
|
| 3286 |
|
|
if (syms[i]->value > opd->size - 8)
|
| 3287 |
|
|
continue;
|
| 3288 |
|
|
|
| 3289 |
|
|
ent = bfd_get_64 (abfd, contents + syms[i]->value);
|
| 3290 |
|
|
if (!sym_exists_at (syms, opdsymend, symcount, -1, ent))
|
| 3291 |
|
|
{
|
| 3292 |
|
|
long lo, hi;
|
| 3293 |
|
|
size_t len;
|
| 3294 |
|
|
asection *sec = abfd->sections;
|
| 3295 |
|
|
|
| 3296 |
|
|
*s = *syms[i];
|
| 3297 |
|
|
lo = codesecsym;
|
| 3298 |
|
|
hi = codesecsymend;
|
| 3299 |
|
|
while (lo < hi)
|
| 3300 |
|
|
{
|
| 3301 |
|
|
long mid = (lo + hi) >> 1;
|
| 3302 |
|
|
if (syms[mid]->section->vma < ent)
|
| 3303 |
|
|
lo = mid + 1;
|
| 3304 |
|
|
else if (syms[mid]->section->vma > ent)
|
| 3305 |
|
|
hi = mid;
|
| 3306 |
|
|
else
|
| 3307 |
|
|
{
|
| 3308 |
|
|
sec = syms[mid]->section;
|
| 3309 |
|
|
break;
|
| 3310 |
|
|
}
|
| 3311 |
|
|
}
|
| 3312 |
|
|
|
| 3313 |
|
|
if (lo >= hi && lo > codesecsym)
|
| 3314 |
|
|
sec = syms[lo - 1]->section;
|
| 3315 |
|
|
|
| 3316 |
|
|
for (; sec != NULL; sec = sec->next)
|
| 3317 |
|
|
{
|
| 3318 |
|
|
if (sec->vma > ent)
|
| 3319 |
|
|
break;
|
| 3320 |
|
|
/* SEC_LOAD may not be set if SEC is from a separate debug
|
| 3321 |
|
|
info file. */
|
| 3322 |
|
|
if ((sec->flags & SEC_ALLOC) == 0)
|
| 3323 |
|
|
break;
|
| 3324 |
|
|
if ((sec->flags & SEC_CODE) != 0)
|
| 3325 |
|
|
s->section = sec;
|
| 3326 |
|
|
}
|
| 3327 |
|
|
s->flags |= BSF_SYNTHETIC;
|
| 3328 |
|
|
s->value = ent - s->section->vma;
|
| 3329 |
|
|
s->name = names;
|
| 3330 |
|
|
*names++ = '.';
|
| 3331 |
|
|
len = strlen (syms[i]->name);
|
| 3332 |
|
|
memcpy (names, syms[i]->name, len + 1);
|
| 3333 |
|
|
names += len + 1;
|
| 3334 |
|
|
/* Have udata.p point back to the original symbol this
|
| 3335 |
|
|
synthetic symbol was derived from. */
|
| 3336 |
|
|
s->udata.p = syms[i];
|
| 3337 |
|
|
s++;
|
| 3338 |
|
|
}
|
| 3339 |
|
|
}
|
| 3340 |
|
|
free (contents);
|
| 3341 |
|
|
|
| 3342 |
|
|
if (glink != NULL && relplt != NULL)
|
| 3343 |
|
|
{
|
| 3344 |
|
|
if (resolv_vma)
|
| 3345 |
|
|
{
|
| 3346 |
|
|
/* Add a symbol for the main glink trampoline. */
|
| 3347 |
|
|
memset (s, 0, sizeof *s);
|
| 3348 |
|
|
s->the_bfd = abfd;
|
| 3349 |
|
|
s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
|
| 3350 |
|
|
s->section = glink;
|
| 3351 |
|
|
s->value = resolv_vma - glink->vma;
|
| 3352 |
|
|
s->name = names;
|
| 3353 |
|
|
memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
|
| 3354 |
|
|
names += sizeof ("__glink_PLTresolve");
|
| 3355 |
|
|
s++;
|
| 3356 |
|
|
count++;
|
| 3357 |
|
|
}
|
| 3358 |
|
|
|
| 3359 |
|
|
/* FIXME: It would be very much nicer to put sym@plt on the
|
| 3360 |
|
|
stub rather than on the glink branch table entry. The
|
| 3361 |
|
|
objdump disassembler would then use a sensible symbol
|
| 3362 |
|
|
name on plt calls. The difficulty in doing so is
|
| 3363 |
|
|
a) finding the stubs, and,
|
| 3364 |
|
|
b) matching stubs against plt entries, and,
|
| 3365 |
|
|
c) there can be multiple stubs for a given plt entry.
|
| 3366 |
|
|
|
| 3367 |
|
|
Solving (a) could be done by code scanning, but older
|
| 3368 |
|
|
ppc64 binaries used different stubs to current code.
|
| 3369 |
|
|
(b) is the tricky one since you need to known the toc
|
| 3370 |
|
|
pointer for at least one function that uses a pic stub to
|
| 3371 |
|
|
be able to calculate the plt address referenced.
|
| 3372 |
|
|
(c) means gdb would need to set multiple breakpoints (or
|
| 3373 |
|
|
find the glink branch itself) when setting breakpoints
|
| 3374 |
|
|
for pending shared library loads. */
|
| 3375 |
|
|
p = relplt->relocation;
|
| 3376 |
|
|
for (i = 0; i < plt_count; i++, p++)
|
| 3377 |
|
|
{
|
| 3378 |
|
|
size_t len;
|
| 3379 |
|
|
|
| 3380 |
|
|
*s = **p->sym_ptr_ptr;
|
| 3381 |
|
|
/* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
|
| 3382 |
|
|
we are defining a symbol, ensure one of them is set. */
|
| 3383 |
|
|
if ((s->flags & BSF_LOCAL) == 0)
|
| 3384 |
|
|
s->flags |= BSF_GLOBAL;
|
| 3385 |
|
|
s->flags |= BSF_SYNTHETIC;
|
| 3386 |
|
|
s->section = glink;
|
| 3387 |
|
|
s->value = glink_vma - glink->vma;
|
| 3388 |
|
|
s->name = names;
|
| 3389 |
|
|
s->udata.p = NULL;
|
| 3390 |
|
|
len = strlen ((*p->sym_ptr_ptr)->name);
|
| 3391 |
|
|
memcpy (names, (*p->sym_ptr_ptr)->name, len);
|
| 3392 |
|
|
names += len;
|
| 3393 |
|
|
if (p->addend != 0)
|
| 3394 |
|
|
{
|
| 3395 |
|
|
memcpy (names, "+0x", sizeof ("+0x") - 1);
|
| 3396 |
|
|
names += sizeof ("+0x") - 1;
|
| 3397 |
|
|
bfd_sprintf_vma (abfd, names, p->addend);
|
| 3398 |
|
|
names += strlen (names);
|
| 3399 |
|
|
}
|
| 3400 |
|
|
memcpy (names, "@plt", sizeof ("@plt"));
|
| 3401 |
|
|
names += sizeof ("@plt");
|
| 3402 |
|
|
s++;
|
| 3403 |
|
|
glink_vma += 8;
|
| 3404 |
|
|
if (i >= 0x8000)
|
| 3405 |
|
|
glink_vma += 4;
|
| 3406 |
|
|
}
|
| 3407 |
|
|
count += plt_count;
|
| 3408 |
|
|
}
|
| 3409 |
|
|
}
|
| 3410 |
|
|
|
| 3411 |
|
|
done:
|
| 3412 |
|
|
free (syms);
|
| 3413 |
|
|
return count;
|
| 3414 |
|
|
}
|
| 3415 |
|
|
|
| 3416 |
|
|
/* The following functions are specific to the ELF linker, while
|
| 3417 |
|
|
functions above are used generally. Those named ppc64_elf_* are
|
| 3418 |
|
|
called by the main ELF linker code. They appear in this file more
|
| 3419 |
|
|
or less in the order in which they are called. eg.
|
| 3420 |
|
|
ppc64_elf_check_relocs is called early in the link process,
|
| 3421 |
|
|
ppc64_elf_finish_dynamic_sections is one of the last functions
|
| 3422 |
|
|
called.
|
| 3423 |
|
|
|
| 3424 |
|
|
PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
|
| 3425 |
|
|
functions have both a function code symbol and a function descriptor
|
| 3426 |
|
|
symbol. A call to foo in a relocatable object file looks like:
|
| 3427 |
|
|
|
| 3428 |
|
|
. .text
|
| 3429 |
|
|
. x:
|
| 3430 |
|
|
. bl .foo
|
| 3431 |
|
|
. nop
|
| 3432 |
|
|
|
| 3433 |
|
|
The function definition in another object file might be:
|
| 3434 |
|
|
|
| 3435 |
|
|
. .section .opd
|
| 3436 |
|
|
. foo: .quad .foo
|
| 3437 |
|
|
. .quad .TOC.@tocbase
|
| 3438 |
|
|
. .quad 0
|
| 3439 |
|
|
.
|
| 3440 |
|
|
. .text
|
| 3441 |
|
|
. .foo: blr
|
| 3442 |
|
|
|
| 3443 |
|
|
When the linker resolves the call during a static link, the branch
|
| 3444 |
|
|
unsurprisingly just goes to .foo and the .opd information is unused.
|
| 3445 |
|
|
If the function definition is in a shared library, things are a little
|
| 3446 |
|
|
different: The call goes via a plt call stub, the opd information gets
|
| 3447 |
|
|
copied to the plt, and the linker patches the nop.
|
| 3448 |
|
|
|
| 3449 |
|
|
. x:
|
| 3450 |
|
|
. bl .foo_stub
|
| 3451 |
|
|
. ld 2,40(1)
|
| 3452 |
|
|
.
|
| 3453 |
|
|
.
|
| 3454 |
|
|
. .foo_stub:
|
| 3455 |
|
|
. addis 12,2,Lfoo@toc@ha # in practice, the call stub
|
| 3456 |
|
|
. addi 12,12,Lfoo@toc@l # is slightly optimized, but
|
| 3457 |
|
|
. std 2,40(1) # this is the general idea
|
| 3458 |
|
|
. ld 11,0(12)
|
| 3459 |
|
|
. ld 2,8(12)
|
| 3460 |
|
|
. mtctr 11
|
| 3461 |
|
|
. ld 11,16(12)
|
| 3462 |
|
|
. bctr
|
| 3463 |
|
|
.
|
| 3464 |
|
|
. .section .plt
|
| 3465 |
|
|
. Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
|
| 3466 |
|
|
|
| 3467 |
|
|
The "reloc ()" notation is supposed to indicate that the linker emits
|
| 3468 |
|
|
an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
|
| 3469 |
|
|
copying.
|
| 3470 |
|
|
|
| 3471 |
|
|
What are the difficulties here? Well, firstly, the relocations
|
| 3472 |
|
|
examined by the linker in check_relocs are against the function code
|
| 3473 |
|
|
sym .foo, while the dynamic relocation in the plt is emitted against
|
| 3474 |
|
|
the function descriptor symbol, foo. Somewhere along the line, we need
|
| 3475 |
|
|
to carefully copy dynamic link information from one symbol to the other.
|
| 3476 |
|
|
Secondly, the generic part of the elf linker will make .foo a dynamic
|
| 3477 |
|
|
symbol as is normal for most other backends. We need foo dynamic
|
| 3478 |
|
|
instead, at least for an application final link. However, when
|
| 3479 |
|
|
creating a shared library containing foo, we need to have both symbols
|
| 3480 |
|
|
dynamic so that references to .foo are satisfied during the early
|
| 3481 |
|
|
stages of linking. Otherwise the linker might decide to pull in a
|
| 3482 |
|
|
definition from some other object, eg. a static library.
|
| 3483 |
|
|
|
| 3484 |
|
|
Update: As of August 2004, we support a new convention. Function
|
| 3485 |
|
|
calls may use the function descriptor symbol, ie. "bl foo". This
|
| 3486 |
|
|
behaves exactly as "bl .foo". */
|
| 3487 |
|
|
|
| 3488 |
|
|
/* Of those relocs that might be copied as dynamic relocs, this function
|
| 3489 |
|
|
selects those that must be copied when linking a shared library,
|
| 3490 |
|
|
even when the symbol is local. */
|
| 3491 |
|
|
|
| 3492 |
|
|
static int
|
| 3493 |
|
|
must_be_dyn_reloc (struct bfd_link_info *info,
|
| 3494 |
|
|
enum elf_ppc64_reloc_type r_type)
|
| 3495 |
|
|
{
|
| 3496 |
|
|
switch (r_type)
|
| 3497 |
|
|
{
|
| 3498 |
|
|
default:
|
| 3499 |
|
|
return 1;
|
| 3500 |
|
|
|
| 3501 |
|
|
case R_PPC64_REL32:
|
| 3502 |
|
|
case R_PPC64_REL64:
|
| 3503 |
|
|
case R_PPC64_REL30:
|
| 3504 |
|
|
return 0;
|
| 3505 |
|
|
|
| 3506 |
|
|
case R_PPC64_TPREL16:
|
| 3507 |
|
|
case R_PPC64_TPREL16_LO:
|
| 3508 |
|
|
case R_PPC64_TPREL16_HI:
|
| 3509 |
|
|
case R_PPC64_TPREL16_HA:
|
| 3510 |
|
|
case R_PPC64_TPREL16_DS:
|
| 3511 |
|
|
case R_PPC64_TPREL16_LO_DS:
|
| 3512 |
|
|
case R_PPC64_TPREL16_HIGHER:
|
| 3513 |
|
|
case R_PPC64_TPREL16_HIGHERA:
|
| 3514 |
|
|
case R_PPC64_TPREL16_HIGHEST:
|
| 3515 |
|
|
case R_PPC64_TPREL16_HIGHESTA:
|
| 3516 |
|
|
case R_PPC64_TPREL64:
|
| 3517 |
|
|
return !info->executable;
|
| 3518 |
|
|
}
|
| 3519 |
|
|
}
|
| 3520 |
|
|
|
| 3521 |
|
|
/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
|
| 3522 |
|
|
copying dynamic variables from a shared lib into an app's dynbss
|
| 3523 |
|
|
section, and instead use a dynamic relocation to point into the
|
| 3524 |
|
|
shared lib. With code that gcc generates, it's vital that this be
|
| 3525 |
|
|
enabled; In the PowerPC64 ABI, the address of a function is actually
|
| 3526 |
|
|
the address of a function descriptor, which resides in the .opd
|
| 3527 |
|
|
section. gcc uses the descriptor directly rather than going via the
|
| 3528 |
|
|
GOT as some other ABI's do, which means that initialized function
|
| 3529 |
|
|
pointers must reference the descriptor. Thus, a function pointer
|
| 3530 |
|
|
initialized to the address of a function in a shared library will
|
| 3531 |
|
|
either require a copy reloc, or a dynamic reloc. Using a copy reloc
|
| 3532 |
|
|
redefines the function descriptor symbol to point to the copy. This
|
| 3533 |
|
|
presents a problem as a plt entry for that function is also
|
| 3534 |
|
|
initialized from the function descriptor symbol and the copy reloc
|
| 3535 |
|
|
may not be initialized first. */
|
| 3536 |
|
|
#define ELIMINATE_COPY_RELOCS 1
|
| 3537 |
|
|
|
| 3538 |
|
|
/* Section name for stubs is the associated section name plus this
|
| 3539 |
|
|
string. */
|
| 3540 |
|
|
#define STUB_SUFFIX ".stub"
|
| 3541 |
|
|
|
| 3542 |
|
|
/* Linker stubs.
|
| 3543 |
|
|
ppc_stub_long_branch:
|
| 3544 |
|
|
Used when a 14 bit branch (or even a 24 bit branch) can't reach its
|
| 3545 |
|
|
destination, but a 24 bit branch in a stub section will reach.
|
| 3546 |
|
|
. b dest
|
| 3547 |
|
|
|
| 3548 |
|
|
ppc_stub_plt_branch:
|
| 3549 |
|
|
Similar to the above, but a 24 bit branch in the stub section won't
|
| 3550 |
|
|
reach its destination.
|
| 3551 |
|
|
. addis %r12,%r2,xxx@toc@ha
|
| 3552 |
|
|
. ld %r11,xxx@toc@l(%r12)
|
| 3553 |
|
|
. mtctr %r11
|
| 3554 |
|
|
. bctr
|
| 3555 |
|
|
|
| 3556 |
|
|
ppc_stub_plt_call:
|
| 3557 |
|
|
Used to call a function in a shared library. If it so happens that
|
| 3558 |
|
|
the plt entry referenced crosses a 64k boundary, then an extra
|
| 3559 |
|
|
"addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
|
| 3560 |
|
|
. addis %r12,%r2,xxx@toc@ha
|
| 3561 |
|
|
. std %r2,40(%r1)
|
| 3562 |
|
|
. ld %r11,xxx+0@toc@l(%r12)
|
| 3563 |
|
|
. mtctr %r11
|
| 3564 |
|
|
. ld %r2,xxx+8@toc@l(%r12)
|
| 3565 |
|
|
. ld %r11,xxx+16@toc@l(%r12)
|
| 3566 |
|
|
. bctr
|
| 3567 |
|
|
|
| 3568 |
|
|
ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
|
| 3569 |
|
|
code to adjust the value and save r2 to support multiple toc sections.
|
| 3570 |
|
|
A ppc_stub_long_branch with an r2 offset looks like:
|
| 3571 |
|
|
. std %r2,40(%r1)
|
| 3572 |
|
|
. addis %r2,%r2,off@ha
|
| 3573 |
|
|
. addi %r2,%r2,off@l
|
| 3574 |
|
|
. b dest
|
| 3575 |
|
|
|
| 3576 |
|
|
A ppc_stub_plt_branch with an r2 offset looks like:
|
| 3577 |
|
|
. std %r2,40(%r1)
|
| 3578 |
|
|
. addis %r12,%r2,xxx@toc@ha
|
| 3579 |
|
|
. ld %r11,xxx@toc@l(%r12)
|
| 3580 |
|
|
. addis %r2,%r2,off@ha
|
| 3581 |
|
|
. addi %r2,%r2,off@l
|
| 3582 |
|
|
. mtctr %r11
|
| 3583 |
|
|
. bctr
|
| 3584 |
|
|
|
| 3585 |
|
|
In cases where the "addis" instruction would add zero, the "addis" is
|
| 3586 |
|
|
omitted and following instructions modified slightly in some cases.
|
| 3587 |
|
|
*/
|
| 3588 |
|
|
|
| 3589 |
|
|
enum ppc_stub_type {
|
| 3590 |
|
|
ppc_stub_none,
|
| 3591 |
|
|
ppc_stub_long_branch,
|
| 3592 |
|
|
ppc_stub_long_branch_r2off,
|
| 3593 |
|
|
ppc_stub_plt_branch,
|
| 3594 |
|
|
ppc_stub_plt_branch_r2off,
|
| 3595 |
166 |
khays |
ppc_stub_plt_call,
|
| 3596 |
|
|
ppc_stub_plt_call_r2save
|
| 3597 |
14 |
khays |
};
|
| 3598 |
|
|
|
| 3599 |
|
|
struct ppc_stub_hash_entry {
|
| 3600 |
|
|
|
| 3601 |
|
|
/* Base hash table entry structure. */
|
| 3602 |
|
|
struct bfd_hash_entry root;
|
| 3603 |
|
|
|
| 3604 |
|
|
enum ppc_stub_type stub_type;
|
| 3605 |
|
|
|
| 3606 |
|
|
/* The stub section. */
|
| 3607 |
|
|
asection *stub_sec;
|
| 3608 |
|
|
|
| 3609 |
|
|
/* Offset within stub_sec of the beginning of this stub. */
|
| 3610 |
|
|
bfd_vma stub_offset;
|
| 3611 |
|
|
|
| 3612 |
|
|
/* Given the symbol's value and its section we can determine its final
|
| 3613 |
|
|
value when building the stubs (so the stub knows where to jump. */
|
| 3614 |
|
|
bfd_vma target_value;
|
| 3615 |
|
|
asection *target_section;
|
| 3616 |
|
|
|
| 3617 |
|
|
/* The symbol table entry, if any, that this was derived from. */
|
| 3618 |
|
|
struct ppc_link_hash_entry *h;
|
| 3619 |
|
|
struct plt_entry *plt_ent;
|
| 3620 |
|
|
|
| 3621 |
|
|
/* And the reloc addend that this was derived from. */
|
| 3622 |
|
|
bfd_vma addend;
|
| 3623 |
|
|
|
| 3624 |
|
|
/* Where this stub is being called from, or, in the case of combined
|
| 3625 |
|
|
stub sections, the first input section in the group. */
|
| 3626 |
|
|
asection *id_sec;
|
| 3627 |
|
|
};
|
| 3628 |
|
|
|
| 3629 |
|
|
struct ppc_branch_hash_entry {
|
| 3630 |
|
|
|
| 3631 |
|
|
/* Base hash table entry structure. */
|
| 3632 |
|
|
struct bfd_hash_entry root;
|
| 3633 |
|
|
|
| 3634 |
|
|
/* Offset within branch lookup table. */
|
| 3635 |
|
|
unsigned int offset;
|
| 3636 |
|
|
|
| 3637 |
|
|
/* Generation marker. */
|
| 3638 |
|
|
unsigned int iter;
|
| 3639 |
|
|
};
|
| 3640 |
|
|
|
| 3641 |
|
|
struct ppc_link_hash_entry
|
| 3642 |
|
|
{
|
| 3643 |
|
|
struct elf_link_hash_entry elf;
|
| 3644 |
|
|
|
| 3645 |
|
|
union {
|
| 3646 |
|
|
/* A pointer to the most recently used stub hash entry against this
|
| 3647 |
|
|
symbol. */
|
| 3648 |
|
|
struct ppc_stub_hash_entry *stub_cache;
|
| 3649 |
|
|
|
| 3650 |
|
|
/* A pointer to the next symbol starting with a '.' */
|
| 3651 |
|
|
struct ppc_link_hash_entry *next_dot_sym;
|
| 3652 |
|
|
} u;
|
| 3653 |
|
|
|
| 3654 |
|
|
/* Track dynamic relocs copied for this symbol. */
|
| 3655 |
|
|
struct elf_dyn_relocs *dyn_relocs;
|
| 3656 |
|
|
|
| 3657 |
|
|
/* Link between function code and descriptor symbols. */
|
| 3658 |
|
|
struct ppc_link_hash_entry *oh;
|
| 3659 |
|
|
|
| 3660 |
|
|
/* Flag function code and descriptor symbols. */
|
| 3661 |
|
|
unsigned int is_func:1;
|
| 3662 |
|
|
unsigned int is_func_descriptor:1;
|
| 3663 |
|
|
unsigned int fake:1;
|
| 3664 |
|
|
|
| 3665 |
|
|
/* Whether global opd/toc sym has been adjusted or not.
|
| 3666 |
|
|
After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
|
| 3667 |
|
|
should be set for all globals defined in any opd/toc section. */
|
| 3668 |
|
|
unsigned int adjust_done:1;
|
| 3669 |
|
|
|
| 3670 |
|
|
/* Set if we twiddled this symbol to weak at some stage. */
|
| 3671 |
|
|
unsigned int was_undefined:1;
|
| 3672 |
|
|
|
| 3673 |
|
|
/* Contexts in which symbol is used in the GOT (or TOC).
|
| 3674 |
|
|
TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
|
| 3675 |
|
|
corresponding relocs are encountered during check_relocs.
|
| 3676 |
|
|
tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
|
| 3677 |
|
|
indicate the corresponding GOT entry type is not needed.
|
| 3678 |
|
|
tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
|
| 3679 |
|
|
a TPREL one. We use a separate flag rather than setting TPREL
|
| 3680 |
|
|
just for convenience in distinguishing the two cases. */
|
| 3681 |
|
|
#define TLS_GD 1 /* GD reloc. */
|
| 3682 |
|
|
#define TLS_LD 2 /* LD reloc. */
|
| 3683 |
|
|
#define TLS_TPREL 4 /* TPREL reloc, => IE. */
|
| 3684 |
|
|
#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
|
| 3685 |
|
|
#define TLS_TLS 16 /* Any TLS reloc. */
|
| 3686 |
|
|
#define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
|
| 3687 |
|
|
#define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
|
| 3688 |
|
|
#define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
|
| 3689 |
|
|
unsigned char tls_mask;
|
| 3690 |
|
|
};
|
| 3691 |
|
|
|
| 3692 |
|
|
/* ppc64 ELF linker hash table. */
|
| 3693 |
|
|
|
| 3694 |
|
|
struct ppc_link_hash_table
|
| 3695 |
|
|
{
|
| 3696 |
|
|
struct elf_link_hash_table elf;
|
| 3697 |
|
|
|
| 3698 |
|
|
/* The stub hash table. */
|
| 3699 |
|
|
struct bfd_hash_table stub_hash_table;
|
| 3700 |
|
|
|
| 3701 |
|
|
/* Another hash table for plt_branch stubs. */
|
| 3702 |
|
|
struct bfd_hash_table branch_hash_table;
|
| 3703 |
|
|
|
| 3704 |
163 |
khays |
/* Hash table for function prologue tocsave. */
|
| 3705 |
|
|
htab_t tocsave_htab;
|
| 3706 |
|
|
|
| 3707 |
14 |
khays |
/* Linker stub bfd. */
|
| 3708 |
|
|
bfd *stub_bfd;
|
| 3709 |
|
|
|
| 3710 |
|
|
/* Linker call-backs. */
|
| 3711 |
|
|
asection * (*add_stub_section) (const char *, asection *);
|
| 3712 |
|
|
void (*layout_sections_again) (void);
|
| 3713 |
|
|
|
| 3714 |
|
|
/* Array to keep track of which stub sections have been created, and
|
| 3715 |
|
|
information on stub grouping. */
|
| 3716 |
|
|
struct map_stub {
|
| 3717 |
|
|
/* This is the section to which stubs in the group will be attached. */
|
| 3718 |
|
|
asection *link_sec;
|
| 3719 |
|
|
/* The stub section. */
|
| 3720 |
|
|
asection *stub_sec;
|
| 3721 |
|
|
/* Along with elf_gp, specifies the TOC pointer used in this group. */
|
| 3722 |
|
|
bfd_vma toc_off;
|
| 3723 |
|
|
} *stub_group;
|
| 3724 |
|
|
|
| 3725 |
|
|
/* Temp used when calculating TOC pointers. */
|
| 3726 |
|
|
bfd_vma toc_curr;
|
| 3727 |
|
|
bfd *toc_bfd;
|
| 3728 |
|
|
asection *toc_first_sec;
|
| 3729 |
|
|
|
| 3730 |
|
|
/* Highest input section id. */
|
| 3731 |
|
|
int top_id;
|
| 3732 |
|
|
|
| 3733 |
|
|
/* Highest output section index. */
|
| 3734 |
|
|
int top_index;
|
| 3735 |
|
|
|
| 3736 |
|
|
/* Used when adding symbols. */
|
| 3737 |
|
|
struct ppc_link_hash_entry *dot_syms;
|
| 3738 |
|
|
|
| 3739 |
|
|
/* List of input sections for each output section. */
|
| 3740 |
|
|
asection **input_list;
|
| 3741 |
|
|
|
| 3742 |
|
|
/* Short-cuts to get to dynamic linker sections. */
|
| 3743 |
|
|
asection *got;
|
| 3744 |
|
|
asection *plt;
|
| 3745 |
|
|
asection *relplt;
|
| 3746 |
|
|
asection *iplt;
|
| 3747 |
|
|
asection *reliplt;
|
| 3748 |
|
|
asection *dynbss;
|
| 3749 |
|
|
asection *relbss;
|
| 3750 |
|
|
asection *glink;
|
| 3751 |
|
|
asection *sfpr;
|
| 3752 |
|
|
asection *brlt;
|
| 3753 |
|
|
asection *relbrlt;
|
| 3754 |
161 |
khays |
asection *glink_eh_frame;
|
| 3755 |
14 |
khays |
|
| 3756 |
|
|
/* Shortcut to .__tls_get_addr and __tls_get_addr. */
|
| 3757 |
|
|
struct ppc_link_hash_entry *tls_get_addr;
|
| 3758 |
|
|
struct ppc_link_hash_entry *tls_get_addr_fd;
|
| 3759 |
|
|
|
| 3760 |
|
|
/* The size of reliplt used by got entry relocs. */
|
| 3761 |
|
|
bfd_size_type got_reli_size;
|
| 3762 |
|
|
|
| 3763 |
|
|
/* Statistics. */
|
| 3764 |
166 |
khays |
unsigned long stub_count[ppc_stub_plt_call_r2save];
|
| 3765 |
14 |
khays |
|
| 3766 |
|
|
/* Number of stubs against global syms. */
|
| 3767 |
|
|
unsigned long stub_globals;
|
| 3768 |
|
|
|
| 3769 |
166 |
khays |
/* Alignment of PLT call stubs. */
|
| 3770 |
|
|
unsigned int plt_stub_align:4;
|
| 3771 |
|
|
|
| 3772 |
161 |
khays |
/* Set if PLT call stubs should load r11. */
|
| 3773 |
|
|
unsigned int plt_static_chain:1;
|
| 3774 |
|
|
|
| 3775 |
166 |
khays |
/* Set if PLT call stubs need a read-read barrier. */
|
| 3776 |
|
|
unsigned int plt_thread_safe:1;
|
| 3777 |
|
|
|
| 3778 |
14 |
khays |
/* Set if we should emit symbols for stubs. */
|
| 3779 |
|
|
unsigned int emit_stub_syms:1;
|
| 3780 |
|
|
|
| 3781 |
|
|
/* Set if __tls_get_addr optimization should not be done. */
|
| 3782 |
|
|
unsigned int no_tls_get_addr_opt:1;
|
| 3783 |
|
|
|
| 3784 |
|
|
/* Support for multiple toc sections. */
|
| 3785 |
|
|
unsigned int do_multi_toc:1;
|
| 3786 |
|
|
unsigned int multi_toc_needed:1;
|
| 3787 |
|
|
unsigned int second_toc_pass:1;
|
| 3788 |
|
|
unsigned int do_toc_opt:1;
|
| 3789 |
|
|
|
| 3790 |
|
|
/* Set on error. */
|
| 3791 |
|
|
unsigned int stub_error:1;
|
| 3792 |
|
|
|
| 3793 |
|
|
/* Temp used by ppc64_elf_process_dot_syms. */
|
| 3794 |
|
|
unsigned int twiddled_syms:1;
|
| 3795 |
|
|
|
| 3796 |
|
|
/* Incremented every time we size stubs. */
|
| 3797 |
|
|
unsigned int stub_iteration;
|
| 3798 |
|
|
|
| 3799 |
|
|
/* Small local sym cache. */
|
| 3800 |
|
|
struct sym_cache sym_cache;
|
| 3801 |
|
|
};
|
| 3802 |
|
|
|
| 3803 |
|
|
/* Rename some of the generic section flags to better document how they
|
| 3804 |
|
|
are used here. */
|
| 3805 |
|
|
|
| 3806 |
|
|
/* Nonzero if this section has TLS related relocations. */
|
| 3807 |
|
|
#define has_tls_reloc sec_flg0
|
| 3808 |
|
|
|
| 3809 |
|
|
/* Nonzero if this section has a call to __tls_get_addr. */
|
| 3810 |
|
|
#define has_tls_get_addr_call sec_flg1
|
| 3811 |
|
|
|
| 3812 |
|
|
/* Nonzero if this section has any toc or got relocs. */
|
| 3813 |
|
|
#define has_toc_reloc sec_flg2
|
| 3814 |
|
|
|
| 3815 |
|
|
/* Nonzero if this section has a call to another section that uses
|
| 3816 |
|
|
the toc or got. */
|
| 3817 |
|
|
#define makes_toc_func_call sec_flg3
|
| 3818 |
|
|
|
| 3819 |
|
|
/* Recursion protection when determining above flag. */
|
| 3820 |
|
|
#define call_check_in_progress sec_flg4
|
| 3821 |
|
|
#define call_check_done sec_flg5
|
| 3822 |
|
|
|
| 3823 |
|
|
/* Get the ppc64 ELF linker hash table from a link_info structure. */
|
| 3824 |
|
|
|
| 3825 |
|
|
#define ppc_hash_table(p) \
|
| 3826 |
|
|
(elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
|
| 3827 |
|
|
== PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
|
| 3828 |
|
|
|
| 3829 |
|
|
#define ppc_stub_hash_lookup(table, string, create, copy) \
|
| 3830 |
|
|
((struct ppc_stub_hash_entry *) \
|
| 3831 |
|
|
bfd_hash_lookup ((table), (string), (create), (copy)))
|
| 3832 |
|
|
|
| 3833 |
|
|
#define ppc_branch_hash_lookup(table, string, create, copy) \
|
| 3834 |
|
|
((struct ppc_branch_hash_entry *) \
|
| 3835 |
|
|
bfd_hash_lookup ((table), (string), (create), (copy)))
|
| 3836 |
|
|
|
| 3837 |
|
|
/* Create an entry in the stub hash table. */
|
| 3838 |
|
|
|
| 3839 |
|
|
static struct bfd_hash_entry *
|
| 3840 |
|
|
stub_hash_newfunc (struct bfd_hash_entry *entry,
|
| 3841 |
|
|
struct bfd_hash_table *table,
|
| 3842 |
|
|
const char *string)
|
| 3843 |
|
|
{
|
| 3844 |
|
|
/* Allocate the structure if it has not already been allocated by a
|
| 3845 |
|
|
subclass. */
|
| 3846 |
|
|
if (entry == NULL)
|
| 3847 |
|
|
{
|
| 3848 |
|
|
entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
|
| 3849 |
|
|
if (entry == NULL)
|
| 3850 |
|
|
return entry;
|
| 3851 |
|
|
}
|
| 3852 |
|
|
|
| 3853 |
|
|
/* Call the allocation method of the superclass. */
|
| 3854 |
|
|
entry = bfd_hash_newfunc (entry, table, string);
|
| 3855 |
|
|
if (entry != NULL)
|
| 3856 |
|
|
{
|
| 3857 |
|
|
struct ppc_stub_hash_entry *eh;
|
| 3858 |
|
|
|
| 3859 |
|
|
/* Initialize the local fields. */
|
| 3860 |
|
|
eh = (struct ppc_stub_hash_entry *) entry;
|
| 3861 |
|
|
eh->stub_type = ppc_stub_none;
|
| 3862 |
|
|
eh->stub_sec = NULL;
|
| 3863 |
|
|
eh->stub_offset = 0;
|
| 3864 |
|
|
eh->target_value = 0;
|
| 3865 |
|
|
eh->target_section = NULL;
|
| 3866 |
|
|
eh->h = NULL;
|
| 3867 |
|
|
eh->id_sec = NULL;
|
| 3868 |
|
|
}
|
| 3869 |
|
|
|
| 3870 |
|
|
return entry;
|
| 3871 |
|
|
}
|
| 3872 |
|
|
|
| 3873 |
|
|
/* Create an entry in the branch hash table. */
|
| 3874 |
|
|
|
| 3875 |
|
|
static struct bfd_hash_entry *
|
| 3876 |
|
|
branch_hash_newfunc (struct bfd_hash_entry *entry,
|
| 3877 |
|
|
struct bfd_hash_table *table,
|
| 3878 |
|
|
const char *string)
|
| 3879 |
|
|
{
|
| 3880 |
|
|
/* Allocate the structure if it has not already been allocated by a
|
| 3881 |
|
|
subclass. */
|
| 3882 |
|
|
if (entry == NULL)
|
| 3883 |
|
|
{
|
| 3884 |
|
|
entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
|
| 3885 |
|
|
if (entry == NULL)
|
| 3886 |
|
|
return entry;
|
| 3887 |
|
|
}
|
| 3888 |
|
|
|
| 3889 |
|
|
/* Call the allocation method of the superclass. */
|
| 3890 |
|
|
entry = bfd_hash_newfunc (entry, table, string);
|
| 3891 |
|
|
if (entry != NULL)
|
| 3892 |
|
|
{
|
| 3893 |
|
|
struct ppc_branch_hash_entry *eh;
|
| 3894 |
|
|
|
| 3895 |
|
|
/* Initialize the local fields. */
|
| 3896 |
|
|
eh = (struct ppc_branch_hash_entry *) entry;
|
| 3897 |
|
|
eh->offset = 0;
|
| 3898 |
|
|
eh->iter = 0;
|
| 3899 |
|
|
}
|
| 3900 |
|
|
|
| 3901 |
|
|
return entry;
|
| 3902 |
|
|
}
|
| 3903 |
|
|
|
| 3904 |
|
|
/* Create an entry in a ppc64 ELF linker hash table. */
|
| 3905 |
|
|
|
| 3906 |
|
|
static struct bfd_hash_entry *
|
| 3907 |
|
|
link_hash_newfunc (struct bfd_hash_entry *entry,
|
| 3908 |
|
|
struct bfd_hash_table *table,
|
| 3909 |
|
|
const char *string)
|
| 3910 |
|
|
{
|
| 3911 |
|
|
/* Allocate the structure if it has not already been allocated by a
|
| 3912 |
|
|
subclass. */
|
| 3913 |
|
|
if (entry == NULL)
|
| 3914 |
|
|
{
|
| 3915 |
|
|
entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
|
| 3916 |
|
|
if (entry == NULL)
|
| 3917 |
|
|
return entry;
|
| 3918 |
|
|
}
|
| 3919 |
|
|
|
| 3920 |
|
|
/* Call the allocation method of the superclass. */
|
| 3921 |
|
|
entry = _bfd_elf_link_hash_newfunc (entry, table, string);
|
| 3922 |
|
|
if (entry != NULL)
|
| 3923 |
|
|
{
|
| 3924 |
|
|
struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
|
| 3925 |
|
|
|
| 3926 |
|
|
memset (&eh->u.stub_cache, 0,
|
| 3927 |
|
|
(sizeof (struct ppc_link_hash_entry)
|
| 3928 |
|
|
- offsetof (struct ppc_link_hash_entry, u.stub_cache)));
|
| 3929 |
|
|
|
| 3930 |
|
|
/* When making function calls, old ABI code references function entry
|
| 3931 |
|
|
points (dot symbols), while new ABI code references the function
|
| 3932 |
|
|
descriptor symbol. We need to make any combination of reference and
|
| 3933 |
|
|
definition work together, without breaking archive linking.
|
| 3934 |
|
|
|
| 3935 |
|
|
For a defined function "foo" and an undefined call to "bar":
|
| 3936 |
|
|
An old object defines "foo" and ".foo", references ".bar" (possibly
|
| 3937 |
|
|
"bar" too).
|
| 3938 |
|
|
A new object defines "foo" and references "bar".
|
| 3939 |
|
|
|
| 3940 |
|
|
A new object thus has no problem with its undefined symbols being
|
| 3941 |
|
|
satisfied by definitions in an old object. On the other hand, the
|
| 3942 |
|
|
old object won't have ".bar" satisfied by a new object.
|
| 3943 |
|
|
|
| 3944 |
|
|
Keep a list of newly added dot-symbols. */
|
| 3945 |
|
|
|
| 3946 |
|
|
if (string[0] == '.')
|
| 3947 |
|
|
{
|
| 3948 |
|
|
struct ppc_link_hash_table *htab;
|
| 3949 |
|
|
|
| 3950 |
|
|
htab = (struct ppc_link_hash_table *) table;
|
| 3951 |
|
|
eh->u.next_dot_sym = htab->dot_syms;
|
| 3952 |
|
|
htab->dot_syms = eh;
|
| 3953 |
|
|
}
|
| 3954 |
|
|
}
|
| 3955 |
|
|
|
| 3956 |
|
|
return entry;
|
| 3957 |
|
|
}
|
| 3958 |
|
|
|
| 3959 |
163 |
khays |
struct tocsave_entry {
|
| 3960 |
|
|
asection *sec;
|
| 3961 |
|
|
bfd_vma offset;
|
| 3962 |
|
|
};
|
| 3963 |
|
|
|
| 3964 |
|
|
static hashval_t
|
| 3965 |
|
|
tocsave_htab_hash (const void *p)
|
| 3966 |
|
|
{
|
| 3967 |
|
|
const struct tocsave_entry *e = (const struct tocsave_entry *) p;
|
| 3968 |
|
|
return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3;
|
| 3969 |
|
|
}
|
| 3970 |
|
|
|
| 3971 |
|
|
static int
|
| 3972 |
|
|
tocsave_htab_eq (const void *p1, const void *p2)
|
| 3973 |
|
|
{
|
| 3974 |
|
|
const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1;
|
| 3975 |
|
|
const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2;
|
| 3976 |
|
|
return e1->sec == e2->sec && e1->offset == e2->offset;
|
| 3977 |
|
|
}
|
| 3978 |
|
|
|
| 3979 |
14 |
khays |
/* Create a ppc64 ELF linker hash table. */
|
| 3980 |
|
|
|
| 3981 |
|
|
static struct bfd_link_hash_table *
|
| 3982 |
|
|
ppc64_elf_link_hash_table_create (bfd *abfd)
|
| 3983 |
|
|
{
|
| 3984 |
|
|
struct ppc_link_hash_table *htab;
|
| 3985 |
|
|
bfd_size_type amt = sizeof (struct ppc_link_hash_table);
|
| 3986 |
|
|
|
| 3987 |
|
|
htab = bfd_zmalloc (amt);
|
| 3988 |
|
|
if (htab == NULL)
|
| 3989 |
|
|
return NULL;
|
| 3990 |
|
|
|
| 3991 |
|
|
if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc,
|
| 3992 |
|
|
sizeof (struct ppc_link_hash_entry),
|
| 3993 |
|
|
PPC64_ELF_DATA))
|
| 3994 |
|
|
{
|
| 3995 |
|
|
free (htab);
|
| 3996 |
|
|
return NULL;
|
| 3997 |
|
|
}
|
| 3998 |
|
|
|
| 3999 |
|
|
/* Init the stub hash table too. */
|
| 4000 |
|
|
if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc,
|
| 4001 |
|
|
sizeof (struct ppc_stub_hash_entry)))
|
| 4002 |
|
|
return NULL;
|
| 4003 |
|
|
|
| 4004 |
|
|
/* And the branch hash table. */
|
| 4005 |
|
|
if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc,
|
| 4006 |
|
|
sizeof (struct ppc_branch_hash_entry)))
|
| 4007 |
|
|
return NULL;
|
| 4008 |
|
|
|
| 4009 |
163 |
khays |
htab->tocsave_htab = htab_try_create (1024,
|
| 4010 |
|
|
tocsave_htab_hash,
|
| 4011 |
|
|
tocsave_htab_eq,
|
| 4012 |
|
|
NULL);
|
| 4013 |
|
|
if (htab->tocsave_htab == NULL)
|
| 4014 |
|
|
return NULL;
|
| 4015 |
|
|
|
| 4016 |
14 |
khays |
/* Initializing two fields of the union is just cosmetic. We really
|
| 4017 |
|
|
only care about glist, but when compiled on a 32-bit host the
|
| 4018 |
|
|
bfd_vma fields are larger. Setting the bfd_vma to zero makes
|
| 4019 |
|
|
debugger inspection of these fields look nicer. */
|
| 4020 |
|
|
htab->elf.init_got_refcount.refcount = 0;
|
| 4021 |
|
|
htab->elf.init_got_refcount.glist = NULL;
|
| 4022 |
|
|
htab->elf.init_plt_refcount.refcount = 0;
|
| 4023 |
|
|
htab->elf.init_plt_refcount.glist = NULL;
|
| 4024 |
|
|
htab->elf.init_got_offset.offset = 0;
|
| 4025 |
|
|
htab->elf.init_got_offset.glist = NULL;
|
| 4026 |
|
|
htab->elf.init_plt_offset.offset = 0;
|
| 4027 |
|
|
htab->elf.init_plt_offset.glist = NULL;
|
| 4028 |
|
|
|
| 4029 |
|
|
return &htab->elf.root;
|
| 4030 |
|
|
}
|
| 4031 |
|
|
|
| 4032 |
|
|
/* Free the derived linker hash table. */
|
| 4033 |
|
|
|
| 4034 |
|
|
static void
|
| 4035 |
|
|
ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash)
|
| 4036 |
|
|
{
|
| 4037 |
163 |
khays |
struct ppc_link_hash_table *htab = (struct ppc_link_hash_table *) hash;
|
| 4038 |
14 |
khays |
|
| 4039 |
163 |
khays |
bfd_hash_table_free (&htab->stub_hash_table);
|
| 4040 |
|
|
bfd_hash_table_free (&htab->branch_hash_table);
|
| 4041 |
|
|
if (htab->tocsave_htab)
|
| 4042 |
|
|
htab_delete (htab->tocsave_htab);
|
| 4043 |
14 |
khays |
_bfd_generic_link_hash_table_free (hash);
|
| 4044 |
|
|
}
|
| 4045 |
|
|
|
| 4046 |
|
|
/* Satisfy the ELF linker by filling in some fields in our fake bfd. */
|
| 4047 |
|
|
|
| 4048 |
|
|
void
|
| 4049 |
|
|
ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info)
|
| 4050 |
|
|
{
|
| 4051 |
|
|
struct ppc_link_hash_table *htab;
|
| 4052 |
|
|
|
| 4053 |
|
|
elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64;
|
| 4054 |
|
|
|
| 4055 |
|
|
/* Always hook our dynamic sections into the first bfd, which is the
|
| 4056 |
|
|
linker created stub bfd. This ensures that the GOT header is at
|
| 4057 |
|
|
the start of the output TOC section. */
|
| 4058 |
|
|
htab = ppc_hash_table (info);
|
| 4059 |
|
|
if (htab == NULL)
|
| 4060 |
|
|
return;
|
| 4061 |
|
|
htab->stub_bfd = abfd;
|
| 4062 |
|
|
htab->elf.dynobj = abfd;
|
| 4063 |
|
|
}
|
| 4064 |
|
|
|
| 4065 |
|
|
/* Build a name for an entry in the stub hash table. */
|
| 4066 |
|
|
|
| 4067 |
|
|
static char *
|
| 4068 |
|
|
ppc_stub_name (const asection *input_section,
|
| 4069 |
|
|
const asection *sym_sec,
|
| 4070 |
|
|
const struct ppc_link_hash_entry *h,
|
| 4071 |
|
|
const Elf_Internal_Rela *rel)
|
| 4072 |
|
|
{
|
| 4073 |
|
|
char *stub_name;
|
| 4074 |
|
|
bfd_size_type len;
|
| 4075 |
|
|
|
| 4076 |
|
|
/* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
|
| 4077 |
|
|
offsets from a sym as a branch target? In fact, we could
|
| 4078 |
|
|
probably assume the addend is always zero. */
|
| 4079 |
|
|
BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
|
| 4080 |
|
|
|
| 4081 |
|
|
if (h)
|
| 4082 |
|
|
{
|
| 4083 |
|
|
len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
|
| 4084 |
|
|
stub_name = bfd_malloc (len);
|
| 4085 |
|
|
if (stub_name == NULL)
|
| 4086 |
|
|
return stub_name;
|
| 4087 |
|
|
|
| 4088 |
|
|
sprintf (stub_name, "%08x.%s+%x",
|
| 4089 |
|
|
input_section->id & 0xffffffff,
|
| 4090 |
|
|
h->elf.root.root.string,
|
| 4091 |
|
|
(int) rel->r_addend & 0xffffffff);
|
| 4092 |
|
|
}
|
| 4093 |
|
|
else
|
| 4094 |
|
|
{
|
| 4095 |
|
|
len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
|
| 4096 |
|
|
stub_name = bfd_malloc (len);
|
| 4097 |
|
|
if (stub_name == NULL)
|
| 4098 |
|
|
return stub_name;
|
| 4099 |
|
|
|
| 4100 |
|
|
sprintf (stub_name, "%08x.%x:%x+%x",
|
| 4101 |
|
|
input_section->id & 0xffffffff,
|
| 4102 |
|
|
sym_sec->id & 0xffffffff,
|
| 4103 |
|
|
(int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
|
| 4104 |
|
|
(int) rel->r_addend & 0xffffffff);
|
| 4105 |
|
|
}
|
| 4106 |
|
|
if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0')
|
| 4107 |
|
|
stub_name[len - 2] = 0;
|
| 4108 |
|
|
return stub_name;
|
| 4109 |
|
|
}
|
| 4110 |
|
|
|
| 4111 |
|
|
/* Look up an entry in the stub hash. Stub entries are cached because
|
| 4112 |
|
|
creating the stub name takes a bit of time. */
|
| 4113 |
|
|
|
| 4114 |
|
|
static struct ppc_stub_hash_entry *
|
| 4115 |
|
|
ppc_get_stub_entry (const asection *input_section,
|
| 4116 |
|
|
const asection *sym_sec,
|
| 4117 |
|
|
struct ppc_link_hash_entry *h,
|
| 4118 |
|
|
const Elf_Internal_Rela *rel,
|
| 4119 |
|
|
struct ppc_link_hash_table *htab)
|
| 4120 |
|
|
{
|
| 4121 |
|
|
struct ppc_stub_hash_entry *stub_entry;
|
| 4122 |
|
|
const asection *id_sec;
|
| 4123 |
|
|
|
| 4124 |
|
|
/* If this input section is part of a group of sections sharing one
|
| 4125 |
|
|
stub section, then use the id of the first section in the group.
|
| 4126 |
|
|
Stub names need to include a section id, as there may well be
|
| 4127 |
|
|
more than one stub used to reach say, printf, and we need to
|
| 4128 |
|
|
distinguish between them. */
|
| 4129 |
|
|
id_sec = htab->stub_group[input_section->id].link_sec;
|
| 4130 |
|
|
|
| 4131 |
|
|
if (h != NULL && h->u.stub_cache != NULL
|
| 4132 |
|
|
&& h->u.stub_cache->h == h
|
| 4133 |
|
|
&& h->u.stub_cache->id_sec == id_sec)
|
| 4134 |
|
|
{
|
| 4135 |
|
|
stub_entry = h->u.stub_cache;
|
| 4136 |
|
|
}
|
| 4137 |
|
|
else
|
| 4138 |
|
|
{
|
| 4139 |
|
|
char *stub_name;
|
| 4140 |
|
|
|
| 4141 |
|
|
stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
|
| 4142 |
|
|
if (stub_name == NULL)
|
| 4143 |
|
|
return NULL;
|
| 4144 |
|
|
|
| 4145 |
|
|
stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
|
| 4146 |
|
|
stub_name, FALSE, FALSE);
|
| 4147 |
|
|
if (h != NULL)
|
| 4148 |
|
|
h->u.stub_cache = stub_entry;
|
| 4149 |
|
|
|
| 4150 |
|
|
free (stub_name);
|
| 4151 |
|
|
}
|
| 4152 |
|
|
|
| 4153 |
|
|
return stub_entry;
|
| 4154 |
|
|
}
|
| 4155 |
|
|
|
| 4156 |
|
|
/* Add a new stub entry to the stub hash. Not all fields of the new
|
| 4157 |
|
|
stub entry are initialised. */
|
| 4158 |
|
|
|
| 4159 |
|
|
static struct ppc_stub_hash_entry *
|
| 4160 |
|
|
ppc_add_stub (const char *stub_name,
|
| 4161 |
|
|
asection *section,
|
| 4162 |
|
|
struct bfd_link_info *info)
|
| 4163 |
|
|
{
|
| 4164 |
|
|
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
| 4165 |
|
|
asection *link_sec;
|
| 4166 |
|
|
asection *stub_sec;
|
| 4167 |
|
|
struct ppc_stub_hash_entry *stub_entry;
|
| 4168 |
|
|
|
| 4169 |
|
|
link_sec = htab->stub_group[section->id].link_sec;
|
| 4170 |
|
|
stub_sec = htab->stub_group[section->id].stub_sec;
|
| 4171 |
|
|
if (stub_sec == NULL)
|
| 4172 |
|
|
{
|
| 4173 |
|
|
stub_sec = htab->stub_group[link_sec->id].stub_sec;
|
| 4174 |
|
|
if (stub_sec == NULL)
|
| 4175 |
|
|
{
|
| 4176 |
|
|
size_t namelen;
|
| 4177 |
|
|
bfd_size_type len;
|
| 4178 |
|
|
char *s_name;
|
| 4179 |
|
|
|
| 4180 |
|
|
namelen = strlen (link_sec->name);
|
| 4181 |
|
|
len = namelen + sizeof (STUB_SUFFIX);
|
| 4182 |
|
|
s_name = bfd_alloc (htab->stub_bfd, len);
|
| 4183 |
|
|
if (s_name == NULL)
|
| 4184 |
|
|
return NULL;
|
| 4185 |
|
|
|
| 4186 |
|
|
memcpy (s_name, link_sec->name, namelen);
|
| 4187 |
|
|
memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
|
| 4188 |
|
|
stub_sec = (*htab->add_stub_section) (s_name, link_sec);
|
| 4189 |
|
|
if (stub_sec == NULL)
|
| 4190 |
|
|
return NULL;
|
| 4191 |
|
|
htab->stub_group[link_sec->id].stub_sec = stub_sec;
|
| 4192 |
|
|
}
|
| 4193 |
|
|
htab->stub_group[section->id].stub_sec = stub_sec;
|
| 4194 |
|
|
}
|
| 4195 |
|
|
|
| 4196 |
|
|
/* Enter this entry into the linker stub hash table. */
|
| 4197 |
|
|
stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
|
| 4198 |
|
|
TRUE, FALSE);
|
| 4199 |
|
|
if (stub_entry == NULL)
|
| 4200 |
|
|
{
|
| 4201 |
161 |
khays |
info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"),
|
| 4202 |
14 |
khays |
section->owner, stub_name);
|
| 4203 |
|
|
return NULL;
|
| 4204 |
|
|
}
|
| 4205 |
|
|
|
| 4206 |
|
|
stub_entry->stub_sec = stub_sec;
|
| 4207 |
|
|
stub_entry->stub_offset = 0;
|
| 4208 |
|
|
stub_entry->id_sec = link_sec;
|
| 4209 |
|
|
return stub_entry;
|
| 4210 |
|
|
}
|
| 4211 |
|
|
|
| 4212 |
|
|
/* Create sections for linker generated code. */
|
| 4213 |
|
|
|
| 4214 |
|
|
static bfd_boolean
|
| 4215 |
|
|
create_linkage_sections (bfd *dynobj, struct bfd_link_info *info)
|
| 4216 |
|
|
{
|
| 4217 |
|
|
struct ppc_link_hash_table *htab;
|
| 4218 |
|
|
flagword flags;
|
| 4219 |
|
|
|
| 4220 |
|
|
htab = ppc_hash_table (info);
|
| 4221 |
|
|
if (htab == NULL)
|
| 4222 |
|
|
return FALSE;
|
| 4223 |
|
|
|
| 4224 |
|
|
/* Create .sfpr for code to save and restore fp regs. */
|
| 4225 |
|
|
flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
|
| 4226 |
|
|
| SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
|
| 4227 |
|
|
htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr",
|
| 4228 |
|
|
flags);
|
| 4229 |
|
|
if (htab->sfpr == NULL
|
| 4230 |
|
|
|| ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
|
| 4231 |
|
|
return FALSE;
|
| 4232 |
|
|
|
| 4233 |
|
|
/* Create .glink for lazy dynamic linking support. */
|
| 4234 |
|
|
htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink",
|
| 4235 |
|
|
flags);
|
| 4236 |
|
|
if (htab->glink == NULL
|
| 4237 |
|
|
|| ! bfd_set_section_alignment (dynobj, htab->glink, 3))
|
| 4238 |
|
|
return FALSE;
|
| 4239 |
|
|
|
| 4240 |
161 |
khays |
if (!info->no_ld_generated_unwind_info)
|
| 4241 |
|
|
{
|
| 4242 |
|
|
flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
|
| 4243 |
|
|
| SEC_IN_MEMORY | SEC_LINKER_CREATED);
|
| 4244 |
|
|
htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj,
|
| 4245 |
|
|
".eh_frame",
|
| 4246 |
|
|
flags);
|
| 4247 |
|
|
if (htab->glink_eh_frame == NULL
|
| 4248 |
|
|
|| !bfd_set_section_alignment (abfd, htab->glink_eh_frame, 2))
|
| 4249 |
|
|
return FALSE;
|
| 4250 |
|
|
}
|
| 4251 |
|
|
|
| 4252 |
14 |
khays |
flags = SEC_ALLOC | SEC_LINKER_CREATED;
|
| 4253 |
|
|
htab->iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags);
|
| 4254 |
|
|
if (htab->iplt == NULL
|
| 4255 |
|
|
|| ! bfd_set_section_alignment (dynobj, htab->iplt, 3))
|
| 4256 |
|
|
return FALSE;
|
| 4257 |
|
|
|
| 4258 |
|
|
flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
|
| 4259 |
|
|
| SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
|
| 4260 |
|
|
htab->reliplt = bfd_make_section_anyway_with_flags (dynobj,
|
| 4261 |
|
|
".rela.iplt",
|
| 4262 |
|
|
flags);
|
| 4263 |
|
|
if (htab->reliplt == NULL
|
| 4264 |
|
|
|| ! bfd_set_section_alignment (dynobj, htab->reliplt, 3))
|
| 4265 |
|
|
return FALSE;
|
| 4266 |
|
|
|
| 4267 |
|
|
/* Create branch lookup table for plt_branch stubs. */
|
| 4268 |
|
|
flags = (SEC_ALLOC | SEC_LOAD
|
| 4269 |
|
|
| SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
|
| 4270 |
|
|
htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt",
|
| 4271 |
|
|
flags);
|
| 4272 |
|
|
if (htab->brlt == NULL
|
| 4273 |
|
|
|| ! bfd_set_section_alignment (dynobj, htab->brlt, 3))
|
| 4274 |
|
|
return FALSE;
|
| 4275 |
|
|
|
| 4276 |
|
|
if (!info->shared)
|
| 4277 |
|
|
return TRUE;
|
| 4278 |
|
|
|
| 4279 |
|
|
flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
|
| 4280 |
|
|
| SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
|
| 4281 |
|
|
htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj,
|
| 4282 |
|
|
".rela.branch_lt",
|
| 4283 |
|
|
flags);
|
| 4284 |
|
|
if (htab->relbrlt == NULL
|
| 4285 |
|
|
|| ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3))
|
| 4286 |
|
|
return FALSE;
|
| 4287 |
|
|
|
| 4288 |
|
|
return TRUE;
|
| 4289 |
|
|
}
|
| 4290 |
|
|
|
| 4291 |
|
|
/* Create .got and .rela.got sections in ABFD, and .got in dynobj if
|
| 4292 |
|
|
not already done. */
|
| 4293 |
|
|
|
| 4294 |
|
|
static bfd_boolean
|
| 4295 |
|
|
create_got_section (bfd *abfd, struct bfd_link_info *info)
|
| 4296 |
|
|
{
|
| 4297 |
|
|
asection *got, *relgot;
|
| 4298 |
|
|
flagword flags;
|
| 4299 |
|
|
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
| 4300 |
|
|
|
| 4301 |
|
|
if (!is_ppc64_elf (abfd))
|
| 4302 |
|
|
return FALSE;
|
| 4303 |
|
|
if (htab == NULL)
|
| 4304 |
|
|
return FALSE;
|
| 4305 |
|
|
|
| 4306 |
|
|
if (!htab->got)
|
| 4307 |
|
|
{
|
| 4308 |
|
|
if (! _bfd_elf_create_got_section (htab->elf.dynobj, info))
|
| 4309 |
|
|
return FALSE;
|
| 4310 |
|
|
|
| 4311 |
|
|
htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got");
|
| 4312 |
|
|
if (!htab->got)
|
| 4313 |
|
|
abort ();
|
| 4314 |
|
|
}
|
| 4315 |
|
|
|
| 4316 |
|
|
flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
|
| 4317 |
|
|
| SEC_LINKER_CREATED);
|
| 4318 |
|
|
|
| 4319 |
|
|
got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
|
| 4320 |
|
|
if (!got
|
| 4321 |
|
|
|| !bfd_set_section_alignment (abfd, got, 3))
|
| 4322 |
|
|
return FALSE;
|
| 4323 |
|
|
|
| 4324 |
|
|
relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got",
|
| 4325 |
|
|
flags | SEC_READONLY);
|
| 4326 |
|
|
if (!relgot
|
| 4327 |
|
|
|| ! bfd_set_section_alignment (abfd, relgot, 3))
|
| 4328 |
|
|
return FALSE;
|
| 4329 |
|
|
|
| 4330 |
|
|
ppc64_elf_tdata (abfd)->got = got;
|
| 4331 |
|
|
ppc64_elf_tdata (abfd)->relgot = relgot;
|
| 4332 |
|
|
return TRUE;
|
| 4333 |
|
|
}
|
| 4334 |
|
|
|
| 4335 |
|
|
/* Create the dynamic sections, and set up shortcuts. */
|
| 4336 |
|
|
|
| 4337 |
|
|
static bfd_boolean
|
| 4338 |
|
|
ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
|
| 4339 |
|
|
{
|
| 4340 |
|
|
struct ppc_link_hash_table *htab;
|
| 4341 |
|
|
|
| 4342 |
|
|
if (!_bfd_elf_create_dynamic_sections (dynobj, info))
|
| 4343 |
|
|
return FALSE;
|
| 4344 |
|
|
|
| 4345 |
|
|
htab = ppc_hash_table (info);
|
| 4346 |
|
|
if (htab == NULL)
|
| 4347 |
|
|
return FALSE;
|
| 4348 |
|
|
|
| 4349 |
|
|
if (!htab->got)
|
| 4350 |
|
|
htab->got = bfd_get_section_by_name (dynobj, ".got");
|
| 4351 |
|
|
htab->plt = bfd_get_section_by_name (dynobj, ".plt");
|
| 4352 |
|
|
htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt");
|
| 4353 |
|
|
htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss");
|
| 4354 |
|
|
if (!info->shared)
|
| 4355 |
|
|
htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss");
|
| 4356 |
|
|
|
| 4357 |
|
|
if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss
|
| 4358 |
|
|
|| (!info->shared && !htab->relbss))
|
| 4359 |
|
|
abort ();
|
| 4360 |
|
|
|
| 4361 |
|
|
return TRUE;
|
| 4362 |
|
|
}
|
| 4363 |
|
|
|
| 4364 |
|
|
/* Follow indirect and warning symbol links. */
|
| 4365 |
|
|
|
| 4366 |
|
|
static inline struct bfd_link_hash_entry *
|
| 4367 |
|
|
follow_link (struct bfd_link_hash_entry *h)
|
| 4368 |
|
|
{
|
| 4369 |
|
|
while (h->type == bfd_link_hash_indirect
|
| 4370 |
|
|
|| h->type == bfd_link_hash_warning)
|
| 4371 |
|
|
h = h->u.i.link;
|
| 4372 |
|
|
return h;
|
| 4373 |
|
|
}
|
| 4374 |
|
|
|
| 4375 |
|
|
static inline struct elf_link_hash_entry *
|
| 4376 |
|
|
elf_follow_link (struct elf_link_hash_entry *h)
|
| 4377 |
|
|
{
|
| 4378 |
|
|
return (struct elf_link_hash_entry *) follow_link (&h->root);
|
| 4379 |
|
|
}
|
| 4380 |
|
|
|
| 4381 |
|
|
static inline struct ppc_link_hash_entry *
|
| 4382 |
|
|
ppc_follow_link (struct ppc_link_hash_entry *h)
|
| 4383 |
|
|
{
|
| 4384 |
|
|
return (struct ppc_link_hash_entry *) follow_link (&h->elf.root);
|
| 4385 |
|
|
}
|
| 4386 |
|
|
|
| 4387 |
|
|
/* Merge PLT info on FROM with that on TO. */
|
| 4388 |
|
|
|
| 4389 |
|
|
static void
|
| 4390 |
|
|
move_plt_plist (struct ppc_link_hash_entry *from,
|
| 4391 |
|
|
struct ppc_link_hash_entry *to)
|
| 4392 |
|
|
{
|
| 4393 |
|
|
if (from->elf.plt.plist != NULL)
|
| 4394 |
|
|
{
|
| 4395 |
|
|
if (to->elf.plt.plist != NULL)
|
| 4396 |
|
|
{
|
| 4397 |
|
|
struct plt_entry **entp;
|
| 4398 |
|
|
struct plt_entry *ent;
|
| 4399 |
|
|
|
| 4400 |
|
|
for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; )
|
| 4401 |
|
|
{
|
| 4402 |
|
|
struct plt_entry *dent;
|
| 4403 |
|
|
|
| 4404 |
|
|
for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next)
|
| 4405 |
|
|
if (dent->addend == ent->addend)
|
| 4406 |
|
|
{
|
| 4407 |
|
|
dent->plt.refcount += ent->plt.refcount;
|
| 4408 |
|
|
*entp = ent->next;
|
| 4409 |
|
|
break;
|
| 4410 |
|
|
}
|
| 4411 |
|
|
if (dent == NULL)
|
| 4412 |
|
|
entp = &ent->next;
|
| 4413 |
|
|
}
|
| 4414 |
|
|
*entp = to->elf.plt.plist;
|
| 4415 |
|
|
}
|
| 4416 |
|
|
|
| 4417 |
|
|
to->elf.plt.plist = from->elf.plt.plist;
|
| 4418 |
|
|
from->elf.plt.plist = NULL;
|
| 4419 |
|
|
}
|
| 4420 |
|
|
}
|
| 4421 |
|
|
|
| 4422 |
|
|
/* Copy the extra info we tack onto an elf_link_hash_entry. */
|
| 4423 |
|
|
|
| 4424 |
|
|
static void
|
| 4425 |
|
|
ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
|
| 4426 |
|
|
struct elf_link_hash_entry *dir,
|
| 4427 |
|
|
struct elf_link_hash_entry *ind)
|
| 4428 |
|
|
{
|
| 4429 |
|
|
struct ppc_link_hash_entry *edir, *eind;
|
| 4430 |
|
|
|
| 4431 |
|
|
edir = (struct ppc_link_hash_entry *) dir;
|
| 4432 |
|
|
eind = (struct ppc_link_hash_entry *) ind;
|
| 4433 |
|
|
|
| 4434 |
161 |
khays |
edir->is_func |= eind->is_func;
|
| 4435 |
|
|
edir->is_func_descriptor |= eind->is_func_descriptor;
|
| 4436 |
|
|
edir->tls_mask |= eind->tls_mask;
|
| 4437 |
|
|
if (eind->oh != NULL)
|
| 4438 |
|
|
edir->oh = ppc_follow_link (eind->oh);
|
| 4439 |
|
|
|
| 4440 |
|
|
/* If called to transfer flags for a weakdef during processing
|
| 4441 |
|
|
of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
|
| 4442 |
|
|
We clear it ourselves for ELIMINATE_COPY_RELOCS. */
|
| 4443 |
|
|
if (!(ELIMINATE_COPY_RELOCS
|
| 4444 |
|
|
&& eind->elf.root.type != bfd_link_hash_indirect
|
| 4445 |
|
|
&& edir->elf.dynamic_adjusted))
|
| 4446 |
|
|
edir->elf.non_got_ref |= eind->elf.non_got_ref;
|
| 4447 |
|
|
|
| 4448 |
|
|
edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
|
| 4449 |
|
|
edir->elf.ref_regular |= eind->elf.ref_regular;
|
| 4450 |
|
|
edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
|
| 4451 |
|
|
edir->elf.needs_plt |= eind->elf.needs_plt;
|
| 4452 |
|
|
|
| 4453 |
14 |
khays |
/* Copy over any dynamic relocs we may have on the indirect sym. */
|
| 4454 |
|
|
if (eind->dyn_relocs != NULL)
|
| 4455 |
|
|
{
|
| 4456 |
|
|
if (edir->dyn_relocs != NULL)
|
| 4457 |
|
|
{
|
| 4458 |
|
|
struct elf_dyn_relocs **pp;
|
| 4459 |
|
|
struct elf_dyn_relocs *p;
|
| 4460 |
|
|
|
| 4461 |
|
|
/* Add reloc counts against the indirect sym to the direct sym
|
| 4462 |
|
|
list. Merge any entries against the same section. */
|
| 4463 |
|
|
for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
|
| 4464 |
|
|
{
|
| 4465 |
|
|
struct elf_dyn_relocs *q;
|
| 4466 |
|
|
|
| 4467 |
|
|
for (q = edir->dyn_relocs; q != NULL; q = q->next)
|
| 4468 |
|
|
if (q->sec == p->sec)
|
| 4469 |
|
|
{
|
| 4470 |
|
|
q->pc_count += p->pc_count;
|
| 4471 |
|
|
q->count += p->count;
|
| 4472 |
|
|
*pp = p->next;
|
| 4473 |
|
|
break;
|
| 4474 |
|
|
}
|
| 4475 |
|
|
if (q == NULL)
|
| 4476 |
|
|
pp = &p->next;
|
| 4477 |
|
|
}
|
| 4478 |
|
|
*pp = edir->dyn_relocs;
|
| 4479 |
|
|
}
|
| 4480 |
|
|
|
| 4481 |
|
|
edir->dyn_relocs = eind->dyn_relocs;
|
| 4482 |
|
|
eind->dyn_relocs = NULL;
|
| 4483 |
|
|
}
|
| 4484 |
|
|
|
| 4485 |
166 |
khays |
/* If we were called to copy over info for a weak sym, that's all.
|
| 4486 |
|
|
You might think dyn_relocs need not be copied over; After all,
|
| 4487 |
|
|
both syms will be dynamic or both non-dynamic so we're just
|
| 4488 |
|
|
moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
|
| 4489 |
|
|
code in ppc64_elf_adjust_dynamic_symbol needs to check for
|
| 4490 |
|
|
dyn_relocs in read-only sections, and it does so on what is the
|
| 4491 |
|
|
DIR sym here. */
|
| 4492 |
|
|
if (eind->elf.root.type != bfd_link_hash_indirect)
|
| 4493 |
|
|
return;
|
| 4494 |
|
|
|
| 4495 |
14 |
khays |
/* Copy over got entries that we may have already seen to the
|
| 4496 |
|
|
symbol which just became indirect. */
|
| 4497 |
|
|
if (eind->elf.got.glist != NULL)
|
| 4498 |
|
|
{
|
| 4499 |
|
|
if (edir->elf.got.glist != NULL)
|
| 4500 |
|
|
{
|
| 4501 |
|
|
struct got_entry **entp;
|
| 4502 |
|
|
struct got_entry *ent;
|
| 4503 |
|
|
|
| 4504 |
|
|
for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; )
|
| 4505 |
|
|
{
|
| 4506 |
|
|
struct got_entry *dent;
|
| 4507 |
|
|
|
| 4508 |
|
|
for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next)
|
| 4509 |
|
|
if (dent->addend == ent->addend
|
| 4510 |
|
|
&& dent->owner == ent->owner
|
| 4511 |
|
|
&& dent->tls_type == ent->tls_type)
|
| 4512 |
|
|
{
|
| 4513 |
|
|
dent->got.refcount += ent->got.refcount;
|
| 4514 |
|
|
*entp = ent->next;
|
| 4515 |
|
|
break;
|
| 4516 |
|
|
}
|
| 4517 |
|
|
if (dent == NULL)
|
| 4518 |
|
|
entp = &ent->next;
|
| 4519 |
|
|
}
|
| 4520 |
|
|
*entp = edir->elf.got.glist;
|
| 4521 |
|
|
}
|
| 4522 |
|
|
|
| 4523 |
|
|
edir->elf.got.glist = eind->elf.got.glist;
|
| 4524 |
|
|
eind->elf.got.glist = NULL;
|
| 4525 |
|
|
}
|
| 4526 |
|
|
|
| 4527 |
|
|
/* And plt entries. */
|
| 4528 |
|
|
move_plt_plist (eind, edir);
|
| 4529 |
|
|
|
| 4530 |
|
|
if (eind->elf.dynindx != -1)
|
| 4531 |
|
|
{
|
| 4532 |
|
|
if (edir->elf.dynindx != -1)
|
| 4533 |
|
|
_bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
|
| 4534 |
|
|
edir->elf.dynstr_index);
|
| 4535 |
|
|
edir->elf.dynindx = eind->elf.dynindx;
|
| 4536 |
|
|
edir->elf.dynstr_index = eind->elf.dynstr_index;
|
| 4537 |
|
|
eind->elf.dynindx = -1;
|
| 4538 |
|
|
eind->elf.dynstr_index = 0;
|
| 4539 |
|
|
}
|
| 4540 |
|
|
}
|
| 4541 |
|
|
|
| 4542 |
|
|
/* Find the function descriptor hash entry from the given function code
|
| 4543 |
|
|
hash entry FH. Link the entries via their OH fields. */
|
| 4544 |
|
|
|
| 4545 |
|
|
static struct ppc_link_hash_entry *
|
| 4546 |
|
|
lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab)
|
| 4547 |
|
|
{
|
| 4548 |
|
|
struct ppc_link_hash_entry *fdh = fh->oh;
|
| 4549 |
|
|
|
| 4550 |
|
|
if (fdh == NULL)
|
| 4551 |
|
|
{
|
| 4552 |
|
|
const char *fd_name = fh->elf.root.root.string + 1;
|
| 4553 |
|
|
|
| 4554 |
|
|
fdh = (struct ppc_link_hash_entry *)
|
| 4555 |
|
|
elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE);
|
| 4556 |
|
|
if (fdh == NULL)
|
| 4557 |
|
|
return fdh;
|
| 4558 |
|
|
|
| 4559 |
|
|
fdh->is_func_descriptor = 1;
|
| 4560 |
|
|
fdh->oh = fh;
|
| 4561 |
|
|
fh->is_func = 1;
|
| 4562 |
|
|
fh->oh = fdh;
|
| 4563 |
|
|
}
|
| 4564 |
|
|
|
| 4565 |
|
|
return ppc_follow_link (fdh);
|
| 4566 |
|
|
}
|
| 4567 |
|
|
|
| 4568 |
|
|
/* Make a fake function descriptor sym for the code sym FH. */
|
| 4569 |
|
|
|
| 4570 |
|
|
static struct ppc_link_hash_entry *
|
| 4571 |
|
|
make_fdh (struct bfd_link_info *info,
|
| 4572 |
|
|
struct ppc_link_hash_entry *fh)
|
| 4573 |
|
|
{
|
| 4574 |
|
|
bfd *abfd;
|
| 4575 |
|
|
asymbol *newsym;
|
| 4576 |
|
|
struct bfd_link_hash_entry *bh;
|
| 4577 |
|
|
struct ppc_link_hash_entry *fdh;
|
| 4578 |
|
|
|
| 4579 |
|
|
abfd = fh->elf.root.u.undef.abfd;
|
| 4580 |
|
|
newsym = bfd_make_empty_symbol (abfd);
|
| 4581 |
|
|
newsym->name = fh->elf.root.root.string + 1;
|
| 4582 |
|
|
newsym->section = bfd_und_section_ptr;
|
| 4583 |
|
|
newsym->value = 0;
|
| 4584 |
|
|
newsym->flags = BSF_WEAK;
|
| 4585 |
|
|
|
| 4586 |
|
|
bh = NULL;
|
| 4587 |
|
|
if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name,
|
| 4588 |
|
|
newsym->flags, newsym->section,
|
| 4589 |
|
|
newsym->value, NULL, FALSE, FALSE,
|
| 4590 |
|
|
&bh))
|
| 4591 |
|
|
return NULL;
|
| 4592 |
|
|
|
| 4593 |
|
|
fdh = (struct ppc_link_hash_entry *) bh;
|
| 4594 |
|
|
fdh->elf.non_elf = 0;
|
| 4595 |
|
|
fdh->fake = 1;
|
| 4596 |
|
|
fdh->is_func_descriptor = 1;
|
| 4597 |
|
|
fdh->oh = fh;
|
| 4598 |
|
|
fh->is_func = 1;
|
| 4599 |
|
|
fh->oh = fdh;
|
| 4600 |
|
|
return fdh;
|
| 4601 |
|
|
}
|
| 4602 |
|
|
|
| 4603 |
|
|
/* Fix function descriptor symbols defined in .opd sections to be
|
| 4604 |
|
|
function type. */
|
| 4605 |
|
|
|
| 4606 |
|
|
static bfd_boolean
|
| 4607 |
|
|
ppc64_elf_add_symbol_hook (bfd *ibfd,
|
| 4608 |
|
|
struct bfd_link_info *info,
|
| 4609 |
|
|
Elf_Internal_Sym *isym,
|
| 4610 |
|
|
const char **name ATTRIBUTE_UNUSED,
|
| 4611 |
|
|
flagword *flags ATTRIBUTE_UNUSED,
|
| 4612 |
|
|
asection **sec,
|
| 4613 |
|
|
bfd_vma *value ATTRIBUTE_UNUSED)
|
| 4614 |
|
|
{
|
| 4615 |
|
|
if ((ibfd->flags & DYNAMIC) == 0
|
| 4616 |
|
|
&& ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE)
|
| 4617 |
|
|
elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
|
| 4618 |
|
|
|
| 4619 |
|
|
if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
|
| 4620 |
|
|
{
|
| 4621 |
|
|
if ((ibfd->flags & DYNAMIC) == 0)
|
| 4622 |
|
|
elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
|
| 4623 |
|
|
}
|
| 4624 |
|
|
else if (ELF_ST_TYPE (isym->st_info) == STT_FUNC)
|
| 4625 |
|
|
;
|
| 4626 |
|
|
else if (*sec != NULL
|
| 4627 |
|
|
&& strcmp ((*sec)->name, ".opd") == 0)
|
| 4628 |
|
|
isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
|
| 4629 |
|
|
|
| 4630 |
|
|
return TRUE;
|
| 4631 |
|
|
}
|
| 4632 |
|
|
|
| 4633 |
|
|
/* This function makes an old ABI object reference to ".bar" cause the
|
| 4634 |
|
|
inclusion of a new ABI object archive that defines "bar".
|
| 4635 |
|
|
NAME is a symbol defined in an archive. Return a symbol in the hash
|
| 4636 |
|
|
table that might be satisfied by the archive symbols. */
|
| 4637 |
|
|
|
| 4638 |
|
|
static struct elf_link_hash_entry *
|
| 4639 |
|
|
ppc64_elf_archive_symbol_lookup (bfd *abfd,
|
| 4640 |
|
|
struct bfd_link_info *info,
|
| 4641 |
|
|
const char *name)
|
| 4642 |
|
|
{
|
| 4643 |
|
|
struct elf_link_hash_entry *h;
|
| 4644 |
|
|
char *dot_name;
|
| 4645 |
|
|
size_t len;
|
| 4646 |
|
|
|
| 4647 |
|
|
h = _bfd_elf_archive_symbol_lookup (abfd, info, name);
|
| 4648 |
|
|
if (h != NULL
|
| 4649 |
|
|
/* Don't return this sym if it is a fake function descriptor
|
| 4650 |
|
|
created by add_symbol_adjust. */
|
| 4651 |
|
|
&& !(h->root.type == bfd_link_hash_undefweak
|
| 4652 |
|
|
&& ((struct ppc_link_hash_entry *) h)->fake))
|
| 4653 |
|
|
return h;
|
| 4654 |
|
|
|
| 4655 |
|
|
if (name[0] == '.')
|
| 4656 |
|
|
return h;
|
| 4657 |
|
|
|
| 4658 |
|
|
len = strlen (name);
|
| 4659 |
|
|
dot_name = bfd_alloc (abfd, len + 2);
|
| 4660 |
|
|
if (dot_name == NULL)
|
| 4661 |
|
|
return (struct elf_link_hash_entry *) 0 - 1;
|
| 4662 |
|
|
dot_name[0] = '.';
|
| 4663 |
|
|
memcpy (dot_name + 1, name, len + 1);
|
| 4664 |
|
|
h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name);
|
| 4665 |
|
|
bfd_release (abfd, dot_name);
|
| 4666 |
|
|
return h;
|
| 4667 |
|
|
}
|
| 4668 |
|
|
|
| 4669 |
|
|
/* This function satisfies all old ABI object references to ".bar" if a
|
| 4670 |
|
|
new ABI object defines "bar". Well, at least, undefined dot symbols
|
| 4671 |
|
|
are made weak. This stops later archive searches from including an
|
| 4672 |
|
|
object if we already have a function descriptor definition. It also
|
| 4673 |
|
|
prevents the linker complaining about undefined symbols.
|
| 4674 |
|
|
We also check and correct mismatched symbol visibility here. The
|
| 4675 |
|
|
most restrictive visibility of the function descriptor and the
|
| 4676 |
|
|
function entry symbol is used. */
|
| 4677 |
|
|
|
| 4678 |
|
|
static bfd_boolean
|
| 4679 |
|
|
add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info)
|
| 4680 |
|
|
{
|
| 4681 |
|
|
struct ppc_link_hash_table *htab;
|
| 4682 |
|
|
struct ppc_link_hash_entry *fdh;
|
| 4683 |
|
|
|
| 4684 |
|
|
if (eh->elf.root.type == bfd_link_hash_indirect)
|
| 4685 |
|
|
return TRUE;
|
| 4686 |
|
|
|
| 4687 |
|
|
if (eh->elf.root.type == bfd_link_hash_warning)
|
| 4688 |
|
|
eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link;
|
| 4689 |
|
|
|
| 4690 |
|
|
if (eh->elf.root.root.string[0] != '.')
|
| 4691 |
|
|
abort ();
|
| 4692 |
|
|
|
| 4693 |
|
|
htab = ppc_hash_table (info);
|
| 4694 |
|
|
if (htab == NULL)
|
| 4695 |
|
|
return FALSE;
|
| 4696 |
|
|
|
| 4697 |
|
|
fdh = lookup_fdh (eh, htab);
|
| 4698 |
|
|
if (fdh == NULL)
|
| 4699 |
|
|
{
|
| 4700 |
|
|
if (!info->relocatable
|
| 4701 |
|
|
&& (eh->elf.root.type == bfd_link_hash_undefined
|
| 4702 |
|
|
|| eh->elf.root.type == bfd_link_hash_undefweak)
|
| 4703 |
|
|
&& eh->elf.ref_regular)
|
| 4704 |
|
|
{
|
| 4705 |
|
|
/* Make an undefweak function descriptor sym, which is enough to
|
| 4706 |
|
|
pull in an --as-needed shared lib, but won't cause link
|
| 4707 |
|
|
errors. Archives are handled elsewhere. */
|
| 4708 |
|
|
fdh = make_fdh (info, eh);
|
| 4709 |
|
|
if (fdh == NULL)
|
| 4710 |
|
|
return FALSE;
|
| 4711 |
|
|
fdh->elf.ref_regular = 1;
|
| 4712 |
|
|
}
|
| 4713 |
|
|
}
|
| 4714 |
|
|
else
|
| 4715 |
|
|
{
|
| 4716 |
|
|
unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1;
|
| 4717 |
|
|
unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1;
|
| 4718 |
|
|
if (entry_vis < descr_vis)
|
| 4719 |
|
|
fdh->elf.other += entry_vis - descr_vis;
|
| 4720 |
|
|
else if (entry_vis > descr_vis)
|
| 4721 |
|
|
eh->elf.other += descr_vis - entry_vis;
|
| 4722 |
|
|
|
| 4723 |
|
|
if ((fdh->elf.root.type == bfd_link_hash_defined
|
| 4724 |
|
|
|| fdh->elf.root.type == bfd_link_hash_defweak)
|
| 4725 |
|
|
&& eh->elf.root.type == bfd_link_hash_undefined)
|
| 4726 |
|
|
{
|
| 4727 |
|
|
eh->elf.root.type = bfd_link_hash_undefweak;
|
| 4728 |
|
|
eh->was_undefined = 1;
|
| 4729 |
|
|
htab->twiddled_syms = 1;
|
| 4730 |
|
|
}
|
| 4731 |
|
|
}
|
| 4732 |
|
|
|
| 4733 |
|
|
return TRUE;
|
| 4734 |
|
|
}
|
| 4735 |
|
|
|
| 4736 |
|
|
/* Process list of dot-symbols we made in link_hash_newfunc. */
|
| 4737 |
|
|
|
| 4738 |
|
|
static bfd_boolean
|
| 4739 |
|
|
ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info)
|
| 4740 |
|
|
{
|
| 4741 |
|
|
struct ppc_link_hash_table *htab;
|
| 4742 |
|
|
struct ppc_link_hash_entry **p, *eh;
|
| 4743 |
|
|
|
| 4744 |
|
|
if (!is_ppc64_elf (info->output_bfd))
|
| 4745 |
|
|
return TRUE;
|
| 4746 |
|
|
htab = ppc_hash_table (info);
|
| 4747 |
|
|
if (htab == NULL)
|
| 4748 |
|
|
return FALSE;
|
| 4749 |
|
|
|
| 4750 |
|
|
if (is_ppc64_elf (ibfd))
|
| 4751 |
|
|
{
|
| 4752 |
|
|
p = &htab->dot_syms;
|
| 4753 |
|
|
while ((eh = *p) != NULL)
|
| 4754 |
|
|
{
|
| 4755 |
|
|
*p = NULL;
|
| 4756 |
|
|
if (!add_symbol_adjust (eh, info))
|
| 4757 |
|
|
return FALSE;
|
| 4758 |
|
|
p = &eh->u.next_dot_sym;
|
| 4759 |
|
|
}
|
| 4760 |
|
|
}
|
| 4761 |
|
|
|
| 4762 |
|
|
/* Clear the list for non-ppc64 input files. */
|
| 4763 |
|
|
p = &htab->dot_syms;
|
| 4764 |
|
|
while ((eh = *p) != NULL)
|
| 4765 |
|
|
{
|
| 4766 |
|
|
*p = NULL;
|
| 4767 |
|
|
p = &eh->u.next_dot_sym;
|
| 4768 |
|
|
}
|
| 4769 |
|
|
|
| 4770 |
|
|
/* We need to fix the undefs list for any syms we have twiddled to
|
| 4771 |
|
|
undef_weak. */
|
| 4772 |
|
|
if (htab->twiddled_syms)
|
| 4773 |
|
|
{
|
| 4774 |
|
|
bfd_link_repair_undef_list (&htab->elf.root);
|
| 4775 |
|
|
htab->twiddled_syms = 0;
|
| 4776 |
|
|
}
|
| 4777 |
|
|
return TRUE;
|
| 4778 |
|
|
}
|
| 4779 |
|
|
|
| 4780 |
|
|
/* Undo hash table changes when an --as-needed input file is determined
|
| 4781 |
|
|
not to be needed. */
|
| 4782 |
|
|
|
| 4783 |
|
|
static bfd_boolean
|
| 4784 |
|
|
ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED,
|
| 4785 |
|
|
struct bfd_link_info *info)
|
| 4786 |
|
|
{
|
| 4787 |
|
|
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
| 4788 |
|
|
|
| 4789 |
|
|
if (htab == NULL)
|
| 4790 |
|
|
return FALSE;
|
| 4791 |
|
|
|
| 4792 |
|
|
htab->dot_syms = NULL;
|
| 4793 |
|
|
return TRUE;
|
| 4794 |
|
|
}
|
| 4795 |
|
|
|
| 4796 |
|
|
/* If --just-symbols against a final linked binary, then assume we need
|
| 4797 |
|
|
toc adjusting stubs when calling functions defined there. */
|
| 4798 |
|
|
|
| 4799 |
|
|
static void
|
| 4800 |
|
|
ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
|
| 4801 |
|
|
{
|
| 4802 |
|
|
if ((sec->flags & SEC_CODE) != 0
|
| 4803 |
|
|
&& (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0
|
| 4804 |
|
|
&& is_ppc64_elf (sec->owner))
|
| 4805 |
|
|
{
|
| 4806 |
|
|
asection *got = bfd_get_section_by_name (sec->owner, ".got");
|
| 4807 |
|
|
if (got != NULL
|
| 4808 |
|
|
&& got->size >= elf_backend_got_header_size
|
| 4809 |
|
|
&& bfd_get_section_by_name (sec->owner, ".opd") != NULL)
|
| 4810 |
|
|
sec->has_toc_reloc = 1;
|
| 4811 |
|
|
}
|
| 4812 |
|
|
_bfd_elf_link_just_syms (sec, info);
|
| 4813 |
|
|
}
|
| 4814 |
|
|
|
| 4815 |
|
|
static struct plt_entry **
|
| 4816 |
|
|
update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr,
|
| 4817 |
|
|
unsigned long r_symndx, bfd_vma r_addend, int tls_type)
|
| 4818 |
|
|
{
|
| 4819 |
|
|
struct got_entry **local_got_ents = elf_local_got_ents (abfd);
|
| 4820 |
|
|
struct plt_entry **local_plt;
|
| 4821 |
|
|
unsigned char *local_got_tls_masks;
|
| 4822 |
|
|
|
| 4823 |
|
|
if (local_got_ents == NULL)
|
| 4824 |
|
|
{
|
| 4825 |
|
|
bfd_size_type size = symtab_hdr->sh_info;
|
| 4826 |
|
|
|
| 4827 |
|
|
size *= (sizeof (*local_got_ents)
|
| 4828 |
|
|
+ sizeof (*local_plt)
|
| 4829 |
|
|
+ sizeof (*local_got_tls_masks));
|
| 4830 |
|
|
local_got_ents = bfd_zalloc (abfd, size);
|
| 4831 |
|
|
if (local_got_ents == NULL)
|
| 4832 |
|
|
return NULL;
|
| 4833 |
|
|
elf_local_got_ents (abfd) = local_got_ents;
|
| 4834 |
|
|
}
|
| 4835 |
|
|
|
| 4836 |
|
|
if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0)
|
| 4837 |
|
|
{
|
| 4838 |
|
|
struct got_entry *ent;
|
| 4839 |
|
|
|
| 4840 |
|
|
for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next)
|
| 4841 |
|
|
if (ent->addend == r_addend
|
| 4842 |
|
|
&& ent->owner == abfd
|
| 4843 |
|
|
&& ent->tls_type == tls_type)
|
| 4844 |
|
|
break;
|
| 4845 |
|
|
if (ent == NULL)
|
| 4846 |
|
|
{
|
| 4847 |
|
|
bfd_size_type amt = sizeof (*ent);
|
| 4848 |
|
|
ent = bfd_alloc (abfd, amt);
|
| 4849 |
|
|
if (ent == NULL)
|
| 4850 |
|
|
return FALSE;
|
| 4851 |
|
|
ent->next = local_got_ents[r_symndx];
|
| 4852 |
|
|
ent->addend = r_addend;
|
| 4853 |
|
|
ent->owner = abfd;
|
| 4854 |
|
|
ent->tls_type = tls_type;
|
| 4855 |
|
|
ent->is_indirect = FALSE;
|
| 4856 |
|
|
ent->got.refcount = 0;
|
| 4857 |
|
|
local_got_ents[r_symndx] = ent;
|
| 4858 |
|
|
}
|
| 4859 |
|
|
ent->got.refcount += 1;
|
| 4860 |
|
|
}
|
| 4861 |
|
|
|
| 4862 |
|
|
local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info);
|
| 4863 |
|
|
local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info);
|
| 4864 |
|
|
local_got_tls_masks[r_symndx] |= tls_type;
|
| 4865 |
|
|
|
| 4866 |
|
|
return local_plt + r_symndx;
|
| 4867 |
|
|
}
|
| 4868 |
|
|
|
| 4869 |
|
|
static bfd_boolean
|
| 4870 |
|
|
update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend)
|
| 4871 |
|
|
{
|
| 4872 |
|
|
struct plt_entry *ent;
|
| 4873 |
|
|
|
| 4874 |
|
|
for (ent = *plist; ent != NULL; ent = ent->next)
|
| 4875 |
|
|
if (ent->addend == addend)
|
| 4876 |
|
|
break;
|
| 4877 |
|
|
if (ent == NULL)
|
| 4878 |
|
|
{
|
| 4879 |
|
|
bfd_size_type amt = sizeof (*ent);
|
| 4880 |
|
|
ent = bfd_alloc (abfd, amt);
|
| 4881 |
|
|
if (ent == NULL)
|
| 4882 |
|
|
return FALSE;
|
| 4883 |
|
|
ent->next = *plist;
|
| 4884 |
|
|
ent->addend = addend;
|
| 4885 |
|
|
ent->plt.refcount = 0;
|
| 4886 |
|
|
*plist = ent;
|
| 4887 |
|
|
}
|
| 4888 |
|
|
ent->plt.refcount += 1;
|
| 4889 |
|
|
return TRUE;
|
| 4890 |
|
|
}
|
| 4891 |
|
|
|
| 4892 |
|
|
static bfd_boolean
|
| 4893 |
|
|
is_branch_reloc (enum elf_ppc64_reloc_type r_type)
|
| 4894 |
|
|
{
|
| 4895 |
|
|
return (r_type == R_PPC64_REL24
|
| 4896 |
|
|
|| r_type == R_PPC64_REL14
|
| 4897 |
|
|
|| r_type == R_PPC64_REL14_BRTAKEN
|
| 4898 |
|
|
|| r_type == R_PPC64_REL14_BRNTAKEN
|
| 4899 |
|
|
|| r_type == R_PPC64_ADDR24
|
| 4900 |
|
|
|| r_type == R_PPC64_ADDR14
|
| 4901 |
|
|
|| r_type == R_PPC64_ADDR14_BRTAKEN
|
| 4902 |
|
|
|| r_type == R_PPC64_ADDR14_BRNTAKEN);
|
| 4903 |
|
|
}
|
| 4904 |
|
|
|
| 4905 |
|
|
/* Look through the relocs for a section during the first phase, and
|
| 4906 |
|
|
calculate needed space in the global offset table, procedure
|
| 4907 |
|
|
linkage table, and dynamic reloc sections. */
|
| 4908 |
|
|
|
| 4909 |
|
|
static bfd_boolean
|
| 4910 |
|
|
ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
|
| 4911 |
|
|
asection *sec, const Elf_Internal_Rela *relocs)
|
| 4912 |
|
|
{
|
| 4913 |
|
|
struct ppc_link_hash_table *htab;
|
| 4914 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 4915 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
| 4916 |
|
|
const Elf_Internal_Rela *rel;
|
| 4917 |
|
|
const Elf_Internal_Rela *rel_end;
|
| 4918 |
|
|
asection *sreloc;
|
| 4919 |
|
|
asection **opd_sym_map;
|
| 4920 |
|
|
struct elf_link_hash_entry *tga, *dottga;
|
| 4921 |
|
|
|
| 4922 |
|
|
if (info->relocatable)
|
| 4923 |
|
|
return TRUE;
|
| 4924 |
|
|
|
| 4925 |
|
|
/* Don't do anything special with non-loaded, non-alloced sections.
|
| 4926 |
|
|
In particular, any relocs in such sections should not affect GOT
|
| 4927 |
|
|
and PLT reference counting (ie. we don't allow them to create GOT
|
| 4928 |
|
|
or PLT entries), there's no possibility or desire to optimize TLS
|
| 4929 |
|
|
relocs, and there's not much point in propagating relocs to shared
|
| 4930 |
|
|
libs that the dynamic linker won't relocate. */
|
| 4931 |
|
|
if ((sec->flags & SEC_ALLOC) == 0)
|
| 4932 |
|
|
return TRUE;
|
| 4933 |
|
|
|
| 4934 |
|
|
BFD_ASSERT (is_ppc64_elf (abfd));
|
| 4935 |
|
|
|
| 4936 |
|
|
htab = ppc_hash_table (info);
|
| 4937 |
|
|
if (htab == NULL)
|
| 4938 |
|
|
return FALSE;
|
| 4939 |
|
|
|
| 4940 |
|
|
tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
|
| 4941 |
|
|
FALSE, FALSE, TRUE);
|
| 4942 |
|
|
dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
|
| 4943 |
|
|
FALSE, FALSE, TRUE);
|
| 4944 |
|
|
symtab_hdr = &elf_symtab_hdr (abfd);
|
| 4945 |
|
|
sym_hashes = elf_sym_hashes (abfd);
|
| 4946 |
|
|
sreloc = NULL;
|
| 4947 |
|
|
opd_sym_map = NULL;
|
| 4948 |
|
|
if (strcmp (sec->name, ".opd") == 0)
|
| 4949 |
|
|
{
|
| 4950 |
|
|
/* Garbage collection needs some extra help with .opd sections.
|
| 4951 |
|
|
We don't want to necessarily keep everything referenced by
|
| 4952 |
|
|
relocs in .opd, as that would keep all functions. Instead,
|
| 4953 |
|
|
if we reference an .opd symbol (a function descriptor), we
|
| 4954 |
|
|
want to keep the function code symbol's section. This is
|
| 4955 |
|
|
easy for global symbols, but for local syms we need to keep
|
| 4956 |
|
|
information about the associated function section. */
|
| 4957 |
|
|
bfd_size_type amt;
|
| 4958 |
|
|
|
| 4959 |
|
|
amt = sec->size * sizeof (*opd_sym_map) / 8;
|
| 4960 |
|
|
opd_sym_map = bfd_zalloc (abfd, amt);
|
| 4961 |
|
|
if (opd_sym_map == NULL)
|
| 4962 |
|
|
return FALSE;
|
| 4963 |
|
|
ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map;
|
| 4964 |
|
|
BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal);
|
| 4965 |
|
|
ppc64_elf_section_data (sec)->sec_type = sec_opd;
|
| 4966 |
|
|
}
|
| 4967 |
|
|
|
| 4968 |
|
|
if (htab->sfpr == NULL
|
| 4969 |
|
|
&& !create_linkage_sections (htab->elf.dynobj, info))
|
| 4970 |
|
|
return FALSE;
|
| 4971 |
|
|
|
| 4972 |
|
|
rel_end = relocs + sec->reloc_count;
|
| 4973 |
|
|
for (rel = relocs; rel < rel_end; rel++)
|
| 4974 |
|
|
{
|
| 4975 |
|
|
unsigned long r_symndx;
|
| 4976 |
|
|
struct elf_link_hash_entry *h;
|
| 4977 |
|
|
enum elf_ppc64_reloc_type r_type;
|
| 4978 |
|
|
int tls_type;
|
| 4979 |
|
|
struct _ppc64_elf_section_data *ppc64_sec;
|
| 4980 |
|
|
struct plt_entry **ifunc;
|
| 4981 |
|
|
|
| 4982 |
|
|
r_symndx = ELF64_R_SYM (rel->r_info);
|
| 4983 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
| 4984 |
|
|
h = NULL;
|
| 4985 |
|
|
else
|
| 4986 |
|
|
{
|
| 4987 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
| 4988 |
|
|
h = elf_follow_link (h);
|
| 4989 |
|
|
}
|
| 4990 |
|
|
|
| 4991 |
|
|
tls_type = 0;
|
| 4992 |
|
|
ifunc = NULL;
|
| 4993 |
|
|
if (h != NULL)
|
| 4994 |
|
|
{
|
| 4995 |
|
|
if (h->type == STT_GNU_IFUNC)
|
| 4996 |
|
|
{
|
| 4997 |
|
|
h->needs_plt = 1;
|
| 4998 |
|
|
ifunc = &h->plt.plist;
|
| 4999 |
|
|
}
|
| 5000 |
|
|
}
|
| 5001 |
|
|
else
|
| 5002 |
|
|
{
|
| 5003 |
|
|
Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
|
| 5004 |
|
|
abfd, r_symndx);
|
| 5005 |
|
|
if (isym == NULL)
|
| 5006 |
|
|
return FALSE;
|
| 5007 |
|
|
|
| 5008 |
|
|
if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
|
| 5009 |
|
|
{
|
| 5010 |
|
|
ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
|
| 5011 |
|
|
rel->r_addend, PLT_IFUNC);
|
| 5012 |
|
|
if (ifunc == NULL)
|
| 5013 |
|
|
return FALSE;
|
| 5014 |
|
|
}
|
| 5015 |
|
|
}
|
| 5016 |
|
|
r_type = ELF64_R_TYPE (rel->r_info);
|
| 5017 |
|
|
if (is_branch_reloc (r_type))
|
| 5018 |
|
|
{
|
| 5019 |
|
|
if (h != NULL && (h == tga || h == dottga))
|
| 5020 |
|
|
{
|
| 5021 |
|
|
if (rel != relocs
|
| 5022 |
|
|
&& (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD
|
| 5023 |
|
|
|| ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD))
|
| 5024 |
|
|
/* We have a new-style __tls_get_addr call with a marker
|
| 5025 |
|
|
reloc. */
|
| 5026 |
|
|
;
|
| 5027 |
|
|
else
|
| 5028 |
|
|
/* Mark this section as having an old-style call. */
|
| 5029 |
|
|
sec->has_tls_get_addr_call = 1;
|
| 5030 |
|
|
}
|
| 5031 |
|
|
|
| 5032 |
|
|
/* STT_GNU_IFUNC symbols must have a PLT entry. */
|
| 5033 |
|
|
if (ifunc != NULL
|
| 5034 |
|
|
&& !update_plt_info (abfd, ifunc, rel->r_addend))
|
| 5035 |
|
|
return FALSE;
|
| 5036 |
|
|
}
|
| 5037 |
|
|
|
| 5038 |
|
|
switch (r_type)
|
| 5039 |
|
|
{
|
| 5040 |
|
|
case R_PPC64_TLSGD:
|
| 5041 |
|
|
case R_PPC64_TLSLD:
|
| 5042 |
|
|
/* These special tls relocs tie a call to __tls_get_addr with
|
| 5043 |
|
|
its parameter symbol. */
|
| 5044 |
|
|
break;
|
| 5045 |
|
|
|
| 5046 |
|
|
case R_PPC64_GOT_TLSLD16:
|
| 5047 |
|
|
case R_PPC64_GOT_TLSLD16_LO:
|
| 5048 |
|
|
case R_PPC64_GOT_TLSLD16_HI:
|
| 5049 |
|
|
case R_PPC64_GOT_TLSLD16_HA:
|
| 5050 |
|
|
tls_type = TLS_TLS | TLS_LD;
|
| 5051 |
|
|
goto dogottls;
|
| 5052 |
|
|
|
| 5053 |
|
|
case R_PPC64_GOT_TLSGD16:
|
| 5054 |
|
|
case R_PPC64_GOT_TLSGD16_LO:
|
| 5055 |
|
|
case R_PPC64_GOT_TLSGD16_HI:
|
| 5056 |
|
|
case R_PPC64_GOT_TLSGD16_HA:
|
| 5057 |
|
|
tls_type = TLS_TLS | TLS_GD;
|
| 5058 |
|
|
goto dogottls;
|
| 5059 |
|
|
|
| 5060 |
|
|
case R_PPC64_GOT_TPREL16_DS:
|
| 5061 |
|
|
case R_PPC64_GOT_TPREL16_LO_DS:
|
| 5062 |
|
|
case R_PPC64_GOT_TPREL16_HI:
|
| 5063 |
|
|
case R_PPC64_GOT_TPREL16_HA:
|
| 5064 |
|
|
if (!info->executable)
|
| 5065 |
|
|
info->flags |= DF_STATIC_TLS;
|
| 5066 |
|
|
tls_type = TLS_TLS | TLS_TPREL;
|
| 5067 |
|
|
goto dogottls;
|
| 5068 |
|
|
|
| 5069 |
|
|
case R_PPC64_GOT_DTPREL16_DS:
|
| 5070 |
|
|
case R_PPC64_GOT_DTPREL16_LO_DS:
|
| 5071 |
|
|
case R_PPC64_GOT_DTPREL16_HI:
|
| 5072 |
|
|
case R_PPC64_GOT_DTPREL16_HA:
|
| 5073 |
|
|
tls_type = TLS_TLS | TLS_DTPREL;
|
| 5074 |
|
|
dogottls:
|
| 5075 |
|
|
sec->has_tls_reloc = 1;
|
| 5076 |
|
|
/* Fall thru */
|
| 5077 |
|
|
|
| 5078 |
|
|
case R_PPC64_GOT16:
|
| 5079 |
|
|
case R_PPC64_GOT16_DS:
|
| 5080 |
|
|
case R_PPC64_GOT16_HA:
|
| 5081 |
|
|
case R_PPC64_GOT16_HI:
|
| 5082 |
|
|
case R_PPC64_GOT16_LO:
|
| 5083 |
|
|
case R_PPC64_GOT16_LO_DS:
|
| 5084 |
|
|
/* This symbol requires a global offset table entry. */
|
| 5085 |
|
|
sec->has_toc_reloc = 1;
|
| 5086 |
|
|
if (r_type == R_PPC64_GOT_TLSLD16
|
| 5087 |
|
|
|| r_type == R_PPC64_GOT_TLSGD16
|
| 5088 |
|
|
|| r_type == R_PPC64_GOT_TPREL16_DS
|
| 5089 |
|
|
|| r_type == R_PPC64_GOT_DTPREL16_DS
|
| 5090 |
|
|
|| r_type == R_PPC64_GOT16
|
| 5091 |
|
|
|| r_type == R_PPC64_GOT16_DS)
|
| 5092 |
|
|
{
|
| 5093 |
|
|
htab->do_multi_toc = 1;
|
| 5094 |
|
|
ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
|
| 5095 |
|
|
}
|
| 5096 |
|
|
|
| 5097 |
|
|
if (ppc64_elf_tdata (abfd)->got == NULL
|
| 5098 |
|
|
&& !create_got_section (abfd, info))
|
| 5099 |
|
|
return FALSE;
|
| 5100 |
|
|
|
| 5101 |
|
|
if (h != NULL)
|
| 5102 |
|
|
{
|
| 5103 |
|
|
struct ppc_link_hash_entry *eh;
|
| 5104 |
|
|
struct got_entry *ent;
|
| 5105 |
|
|
|
| 5106 |
|
|
eh = (struct ppc_link_hash_entry *) h;
|
| 5107 |
|
|
for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next)
|
| 5108 |
|
|
if (ent->addend == rel->r_addend
|
| 5109 |
|
|
&& ent->owner == abfd
|
| 5110 |
|
|
&& ent->tls_type == tls_type)
|
| 5111 |
|
|
break;
|
| 5112 |
|
|
if (ent == NULL)
|
| 5113 |
|
|
{
|
| 5114 |
|
|
bfd_size_type amt = sizeof (*ent);
|
| 5115 |
|
|
ent = bfd_alloc (abfd, amt);
|
| 5116 |
|
|
if (ent == NULL)
|
| 5117 |
|
|
return FALSE;
|
| 5118 |
|
|
ent->next = eh->elf.got.glist;
|
| 5119 |
|
|
ent->addend = rel->r_addend;
|
| 5120 |
|
|
ent->owner = abfd;
|
| 5121 |
|
|
ent->tls_type = tls_type;
|
| 5122 |
|
|
ent->is_indirect = FALSE;
|
| 5123 |
|
|
ent->got.refcount = 0;
|
| 5124 |
|
|
eh->elf.got.glist = ent;
|
| 5125 |
|
|
}
|
| 5126 |
|
|
ent->got.refcount += 1;
|
| 5127 |
|
|
eh->tls_mask |= tls_type;
|
| 5128 |
|
|
}
|
| 5129 |
|
|
else
|
| 5130 |
|
|
/* This is a global offset table entry for a local symbol. */
|
| 5131 |
|
|
if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
|
| 5132 |
|
|
rel->r_addend, tls_type))
|
| 5133 |
|
|
return FALSE;
|
| 5134 |
|
|
break;
|
| 5135 |
|
|
|
| 5136 |
|
|
case R_PPC64_PLT16_HA:
|
| 5137 |
|
|
case R_PPC64_PLT16_HI:
|
| 5138 |
|
|
case R_PPC64_PLT16_LO:
|
| 5139 |
|
|
case R_PPC64_PLT32:
|
| 5140 |
|
|
case R_PPC64_PLT64:
|
| 5141 |
|
|
/* This symbol requires a procedure linkage table entry. We
|
| 5142 |
|
|
actually build the entry in adjust_dynamic_symbol,
|
| 5143 |
|
|
because this might be a case of linking PIC code without
|
| 5144 |
|
|
linking in any dynamic objects, in which case we don't
|
| 5145 |
|
|
need to generate a procedure linkage table after all. */
|
| 5146 |
|
|
if (h == NULL)
|
| 5147 |
|
|
{
|
| 5148 |
|
|
/* It does not make sense to have a procedure linkage
|
| 5149 |
|
|
table entry for a local symbol. */
|
| 5150 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 5151 |
|
|
return FALSE;
|
| 5152 |
|
|
}
|
| 5153 |
|
|
else
|
| 5154 |
|
|
{
|
| 5155 |
|
|
if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
|
| 5156 |
|
|
return FALSE;
|
| 5157 |
|
|
h->needs_plt = 1;
|
| 5158 |
|
|
if (h->root.root.string[0] == '.'
|
| 5159 |
|
|
&& h->root.root.string[1] != '\0')
|
| 5160 |
|
|
((struct ppc_link_hash_entry *) h)->is_func = 1;
|
| 5161 |
|
|
}
|
| 5162 |
|
|
break;
|
| 5163 |
|
|
|
| 5164 |
|
|
/* The following relocations don't need to propagate the
|
| 5165 |
|
|
relocation if linking a shared object since they are
|
| 5166 |
|
|
section relative. */
|
| 5167 |
|
|
case R_PPC64_SECTOFF:
|
| 5168 |
|
|
case R_PPC64_SECTOFF_LO:
|
| 5169 |
|
|
case R_PPC64_SECTOFF_HI:
|
| 5170 |
|
|
case R_PPC64_SECTOFF_HA:
|
| 5171 |
|
|
case R_PPC64_SECTOFF_DS:
|
| 5172 |
|
|
case R_PPC64_SECTOFF_LO_DS:
|
| 5173 |
|
|
case R_PPC64_DTPREL16:
|
| 5174 |
|
|
case R_PPC64_DTPREL16_LO:
|
| 5175 |
|
|
case R_PPC64_DTPREL16_HI:
|
| 5176 |
|
|
case R_PPC64_DTPREL16_HA:
|
| 5177 |
|
|
case R_PPC64_DTPREL16_DS:
|
| 5178 |
|
|
case R_PPC64_DTPREL16_LO_DS:
|
| 5179 |
|
|
case R_PPC64_DTPREL16_HIGHER:
|
| 5180 |
|
|
case R_PPC64_DTPREL16_HIGHERA:
|
| 5181 |
|
|
case R_PPC64_DTPREL16_HIGHEST:
|
| 5182 |
|
|
case R_PPC64_DTPREL16_HIGHESTA:
|
| 5183 |
|
|
break;
|
| 5184 |
|
|
|
| 5185 |
|
|
/* Nor do these. */
|
| 5186 |
|
|
case R_PPC64_REL16:
|
| 5187 |
|
|
case R_PPC64_REL16_LO:
|
| 5188 |
|
|
case R_PPC64_REL16_HI:
|
| 5189 |
|
|
case R_PPC64_REL16_HA:
|
| 5190 |
|
|
break;
|
| 5191 |
|
|
|
| 5192 |
|
|
case R_PPC64_TOC16:
|
| 5193 |
|
|
case R_PPC64_TOC16_DS:
|
| 5194 |
|
|
htab->do_multi_toc = 1;
|
| 5195 |
|
|
ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1;
|
| 5196 |
|
|
case R_PPC64_TOC16_LO:
|
| 5197 |
|
|
case R_PPC64_TOC16_HI:
|
| 5198 |
|
|
case R_PPC64_TOC16_HA:
|
| 5199 |
|
|
case R_PPC64_TOC16_LO_DS:
|
| 5200 |
|
|
sec->has_toc_reloc = 1;
|
| 5201 |
|
|
break;
|
| 5202 |
|
|
|
| 5203 |
|
|
/* This relocation describes the C++ object vtable hierarchy.
|
| 5204 |
|
|
Reconstruct it for later use during GC. */
|
| 5205 |
|
|
case R_PPC64_GNU_VTINHERIT:
|
| 5206 |
|
|
if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
|
| 5207 |
|
|
return FALSE;
|
| 5208 |
|
|
break;
|
| 5209 |
|
|
|
| 5210 |
|
|
/* This relocation describes which C++ vtable entries are actually
|
| 5211 |
|
|
used. Record for later use during GC. */
|
| 5212 |
|
|
case R_PPC64_GNU_VTENTRY:
|
| 5213 |
|
|
BFD_ASSERT (h != NULL);
|
| 5214 |
|
|
if (h != NULL
|
| 5215 |
|
|
&& !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
|
| 5216 |
|
|
return FALSE;
|
| 5217 |
|
|
break;
|
| 5218 |
|
|
|
| 5219 |
|
|
case R_PPC64_REL14:
|
| 5220 |
|
|
case R_PPC64_REL14_BRTAKEN:
|
| 5221 |
|
|
case R_PPC64_REL14_BRNTAKEN:
|
| 5222 |
|
|
{
|
| 5223 |
|
|
asection *dest = NULL;
|
| 5224 |
|
|
|
| 5225 |
|
|
/* Heuristic: If jumping outside our section, chances are
|
| 5226 |
|
|
we are going to need a stub. */
|
| 5227 |
|
|
if (h != NULL)
|
| 5228 |
|
|
{
|
| 5229 |
|
|
/* If the sym is weak it may be overridden later, so
|
| 5230 |
|
|
don't assume we know where a weak sym lives. */
|
| 5231 |
|
|
if (h->root.type == bfd_link_hash_defined)
|
| 5232 |
|
|
dest = h->root.u.def.section;
|
| 5233 |
|
|
}
|
| 5234 |
|
|
else
|
| 5235 |
|
|
{
|
| 5236 |
|
|
Elf_Internal_Sym *isym;
|
| 5237 |
|
|
|
| 5238 |
|
|
isym = bfd_sym_from_r_symndx (&htab->sym_cache,
|
| 5239 |
|
|
abfd, r_symndx);
|
| 5240 |
|
|
if (isym == NULL)
|
| 5241 |
|
|
return FALSE;
|
| 5242 |
|
|
|
| 5243 |
|
|
dest = bfd_section_from_elf_index (abfd, isym->st_shndx);
|
| 5244 |
|
|
}
|
| 5245 |
|
|
|
| 5246 |
|
|
if (dest != sec)
|
| 5247 |
|
|
ppc64_elf_section_data (sec)->has_14bit_branch = 1;
|
| 5248 |
|
|
}
|
| 5249 |
|
|
/* Fall through. */
|
| 5250 |
|
|
|
| 5251 |
|
|
case R_PPC64_REL24:
|
| 5252 |
|
|
if (h != NULL && ifunc == NULL)
|
| 5253 |
|
|
{
|
| 5254 |
|
|
/* We may need a .plt entry if the function this reloc
|
| 5255 |
|
|
refers to is in a shared lib. */
|
| 5256 |
|
|
if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend))
|
| 5257 |
|
|
return FALSE;
|
| 5258 |
|
|
h->needs_plt = 1;
|
| 5259 |
|
|
if (h->root.root.string[0] == '.'
|
| 5260 |
|
|
&& h->root.root.string[1] != '\0')
|
| 5261 |
|
|
((struct ppc_link_hash_entry *) h)->is_func = 1;
|
| 5262 |
|
|
if (h == tga || h == dottga)
|
| 5263 |
|
|
sec->has_tls_reloc = 1;
|
| 5264 |
|
|
}
|
| 5265 |
|
|
break;
|
| 5266 |
|
|
|
| 5267 |
|
|
case R_PPC64_TPREL64:
|
| 5268 |
|
|
tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL;
|
| 5269 |
|
|
if (!info->executable)
|
| 5270 |
|
|
info->flags |= DF_STATIC_TLS;
|
| 5271 |
|
|
goto dotlstoc;
|
| 5272 |
|
|
|
| 5273 |
|
|
case R_PPC64_DTPMOD64:
|
| 5274 |
|
|
if (rel + 1 < rel_end
|
| 5275 |
|
|
&& rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
|
| 5276 |
|
|
&& rel[1].r_offset == rel->r_offset + 8)
|
| 5277 |
|
|
tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD;
|
| 5278 |
|
|
else
|
| 5279 |
|
|
tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD;
|
| 5280 |
|
|
goto dotlstoc;
|
| 5281 |
|
|
|
| 5282 |
|
|
case R_PPC64_DTPREL64:
|
| 5283 |
|
|
tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL;
|
| 5284 |
|
|
if (rel != relocs
|
| 5285 |
|
|
&& rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64)
|
| 5286 |
|
|
&& rel[-1].r_offset == rel->r_offset - 8)
|
| 5287 |
|
|
/* This is the second reloc of a dtpmod, dtprel pair.
|
| 5288 |
|
|
Don't mark with TLS_DTPREL. */
|
| 5289 |
|
|
goto dodyn;
|
| 5290 |
|
|
|
| 5291 |
|
|
dotlstoc:
|
| 5292 |
|
|
sec->has_tls_reloc = 1;
|
| 5293 |
|
|
if (h != NULL)
|
| 5294 |
|
|
{
|
| 5295 |
|
|
struct ppc_link_hash_entry *eh;
|
| 5296 |
|
|
eh = (struct ppc_link_hash_entry *) h;
|
| 5297 |
|
|
eh->tls_mask |= tls_type;
|
| 5298 |
|
|
}
|
| 5299 |
|
|
else
|
| 5300 |
|
|
if (!update_local_sym_info (abfd, symtab_hdr, r_symndx,
|
| 5301 |
|
|
rel->r_addend, tls_type))
|
| 5302 |
|
|
return FALSE;
|
| 5303 |
|
|
|
| 5304 |
|
|
ppc64_sec = ppc64_elf_section_data (sec);
|
| 5305 |
|
|
if (ppc64_sec->sec_type != sec_toc)
|
| 5306 |
|
|
{
|
| 5307 |
|
|
bfd_size_type amt;
|
| 5308 |
|
|
|
| 5309 |
|
|
/* One extra to simplify get_tls_mask. */
|
| 5310 |
|
|
amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned);
|
| 5311 |
|
|
ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt);
|
| 5312 |
|
|
if (ppc64_sec->u.toc.symndx == NULL)
|
| 5313 |
|
|
return FALSE;
|
| 5314 |
|
|
amt = sec->size * sizeof (bfd_vma) / 8;
|
| 5315 |
|
|
ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt);
|
| 5316 |
|
|
if (ppc64_sec->u.toc.add == NULL)
|
| 5317 |
|
|
return FALSE;
|
| 5318 |
|
|
BFD_ASSERT (ppc64_sec->sec_type == sec_normal);
|
| 5319 |
|
|
ppc64_sec->sec_type = sec_toc;
|
| 5320 |
|
|
}
|
| 5321 |
|
|
BFD_ASSERT (rel->r_offset % 8 == 0);
|
| 5322 |
|
|
ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx;
|
| 5323 |
|
|
ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend;
|
| 5324 |
|
|
|
| 5325 |
|
|
/* Mark the second slot of a GD or LD entry.
|
| 5326 |
|
|
-1 to indicate GD and -2 to indicate LD. */
|
| 5327 |
|
|
if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD))
|
| 5328 |
|
|
ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1;
|
| 5329 |
|
|
else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD))
|
| 5330 |
|
|
ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2;
|
| 5331 |
|
|
goto dodyn;
|
| 5332 |
|
|
|
| 5333 |
|
|
case R_PPC64_TPREL16:
|
| 5334 |
|
|
case R_PPC64_TPREL16_LO:
|
| 5335 |
|
|
case R_PPC64_TPREL16_HI:
|
| 5336 |
|
|
case R_PPC64_TPREL16_HA:
|
| 5337 |
|
|
case R_PPC64_TPREL16_DS:
|
| 5338 |
|
|
case R_PPC64_TPREL16_LO_DS:
|
| 5339 |
|
|
case R_PPC64_TPREL16_HIGHER:
|
| 5340 |
|
|
case R_PPC64_TPREL16_HIGHERA:
|
| 5341 |
|
|
case R_PPC64_TPREL16_HIGHEST:
|
| 5342 |
|
|
case R_PPC64_TPREL16_HIGHESTA:
|
| 5343 |
|
|
if (info->shared)
|
| 5344 |
|
|
{
|
| 5345 |
|
|
if (!info->executable)
|
| 5346 |
|
|
info->flags |= DF_STATIC_TLS;
|
| 5347 |
|
|
goto dodyn;
|
| 5348 |
|
|
}
|
| 5349 |
|
|
break;
|
| 5350 |
|
|
|
| 5351 |
|
|
case R_PPC64_ADDR64:
|
| 5352 |
|
|
if (opd_sym_map != NULL
|
| 5353 |
|
|
&& rel + 1 < rel_end
|
| 5354 |
|
|
&& ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC)
|
| 5355 |
|
|
{
|
| 5356 |
|
|
if (h != NULL)
|
| 5357 |
|
|
{
|
| 5358 |
|
|
if (h->root.root.string[0] == '.'
|
| 5359 |
|
|
&& h->root.root.string[1] != 0
|
| 5360 |
|
|
&& lookup_fdh ((struct ppc_link_hash_entry *) h, htab))
|
| 5361 |
|
|
;
|
| 5362 |
|
|
else
|
| 5363 |
|
|
((struct ppc_link_hash_entry *) h)->is_func = 1;
|
| 5364 |
|
|
}
|
| 5365 |
|
|
else
|
| 5366 |
|
|
{
|
| 5367 |
|
|
asection *s;
|
| 5368 |
|
|
Elf_Internal_Sym *isym;
|
| 5369 |
|
|
|
| 5370 |
|
|
isym = bfd_sym_from_r_symndx (&htab->sym_cache,
|
| 5371 |
|
|
abfd, r_symndx);
|
| 5372 |
|
|
if (isym == NULL)
|
| 5373 |
|
|
return FALSE;
|
| 5374 |
|
|
|
| 5375 |
|
|
s = bfd_section_from_elf_index (abfd, isym->st_shndx);
|
| 5376 |
|
|
if (s != NULL && s != sec)
|
| 5377 |
|
|
opd_sym_map[rel->r_offset / 8] = s;
|
| 5378 |
|
|
}
|
| 5379 |
|
|
}
|
| 5380 |
|
|
/* Fall through. */
|
| 5381 |
|
|
|
| 5382 |
|
|
case R_PPC64_REL30:
|
| 5383 |
|
|
case R_PPC64_REL32:
|
| 5384 |
|
|
case R_PPC64_REL64:
|
| 5385 |
|
|
case R_PPC64_ADDR14:
|
| 5386 |
|
|
case R_PPC64_ADDR14_BRNTAKEN:
|
| 5387 |
|
|
case R_PPC64_ADDR14_BRTAKEN:
|
| 5388 |
|
|
case R_PPC64_ADDR16:
|
| 5389 |
|
|
case R_PPC64_ADDR16_DS:
|
| 5390 |
|
|
case R_PPC64_ADDR16_HA:
|
| 5391 |
|
|
case R_PPC64_ADDR16_HI:
|
| 5392 |
|
|
case R_PPC64_ADDR16_HIGHER:
|
| 5393 |
|
|
case R_PPC64_ADDR16_HIGHERA:
|
| 5394 |
|
|
case R_PPC64_ADDR16_HIGHEST:
|
| 5395 |
|
|
case R_PPC64_ADDR16_HIGHESTA:
|
| 5396 |
|
|
case R_PPC64_ADDR16_LO:
|
| 5397 |
|
|
case R_PPC64_ADDR16_LO_DS:
|
| 5398 |
|
|
case R_PPC64_ADDR24:
|
| 5399 |
|
|
case R_PPC64_ADDR32:
|
| 5400 |
|
|
case R_PPC64_UADDR16:
|
| 5401 |
|
|
case R_PPC64_UADDR32:
|
| 5402 |
|
|
case R_PPC64_UADDR64:
|
| 5403 |
|
|
case R_PPC64_TOC:
|
| 5404 |
|
|
if (h != NULL && !info->shared)
|
| 5405 |
|
|
/* We may need a copy reloc. */
|
| 5406 |
|
|
h->non_got_ref = 1;
|
| 5407 |
|
|
|
| 5408 |
|
|
/* Don't propagate .opd relocs. */
|
| 5409 |
|
|
if (NO_OPD_RELOCS && opd_sym_map != NULL)
|
| 5410 |
|
|
break;
|
| 5411 |
|
|
|
| 5412 |
|
|
/* If we are creating a shared library, and this is a reloc
|
| 5413 |
|
|
against a global symbol, or a non PC relative reloc
|
| 5414 |
|
|
against a local symbol, then we need to copy the reloc
|
| 5415 |
|
|
into the shared library. However, if we are linking with
|
| 5416 |
|
|
-Bsymbolic, we do not need to copy a reloc against a
|
| 5417 |
|
|
global symbol which is defined in an object we are
|
| 5418 |
|
|
including in the link (i.e., DEF_REGULAR is set). At
|
| 5419 |
|
|
this point we have not seen all the input files, so it is
|
| 5420 |
|
|
possible that DEF_REGULAR is not set now but will be set
|
| 5421 |
|
|
later (it is never cleared). In case of a weak definition,
|
| 5422 |
|
|
DEF_REGULAR may be cleared later by a strong definition in
|
| 5423 |
|
|
a shared library. We account for that possibility below by
|
| 5424 |
|
|
storing information in the dyn_relocs field of the hash
|
| 5425 |
|
|
table entry. A similar situation occurs when creating
|
| 5426 |
|
|
shared libraries and symbol visibility changes render the
|
| 5427 |
|
|
symbol local.
|
| 5428 |
|
|
|
| 5429 |
|
|
If on the other hand, we are creating an executable, we
|
| 5430 |
|
|
may need to keep relocations for symbols satisfied by a
|
| 5431 |
|
|
dynamic library if we manage to avoid copy relocs for the
|
| 5432 |
|
|
symbol. */
|
| 5433 |
|
|
dodyn:
|
| 5434 |
|
|
if ((info->shared
|
| 5435 |
|
|
&& (must_be_dyn_reloc (info, r_type)
|
| 5436 |
|
|
|| (h != NULL
|
| 5437 |
|
|
&& (! info->symbolic
|
| 5438 |
|
|
|| h->root.type == bfd_link_hash_defweak
|
| 5439 |
|
|
|| !h->def_regular))))
|
| 5440 |
|
|
|| (ELIMINATE_COPY_RELOCS
|
| 5441 |
|
|
&& !info->shared
|
| 5442 |
|
|
&& h != NULL
|
| 5443 |
|
|
&& (h->root.type == bfd_link_hash_defweak
|
| 5444 |
|
|
|| !h->def_regular))
|
| 5445 |
|
|
|| (!info->shared
|
| 5446 |
|
|
&& ifunc != NULL))
|
| 5447 |
|
|
{
|
| 5448 |
|
|
struct elf_dyn_relocs *p;
|
| 5449 |
|
|
struct elf_dyn_relocs **head;
|
| 5450 |
|
|
|
| 5451 |
|
|
/* We must copy these reloc types into the output file.
|
| 5452 |
|
|
Create a reloc section in dynobj and make room for
|
| 5453 |
|
|
this reloc. */
|
| 5454 |
|
|
if (sreloc == NULL)
|
| 5455 |
|
|
{
|
| 5456 |
|
|
sreloc = _bfd_elf_make_dynamic_reloc_section
|
| 5457 |
|
|
(sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE);
|
| 5458 |
|
|
|
| 5459 |
|
|
if (sreloc == NULL)
|
| 5460 |
|
|
return FALSE;
|
| 5461 |
|
|
}
|
| 5462 |
|
|
|
| 5463 |
|
|
/* If this is a global symbol, we count the number of
|
| 5464 |
|
|
relocations we need for this symbol. */
|
| 5465 |
|
|
if (h != NULL)
|
| 5466 |
|
|
{
|
| 5467 |
|
|
head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
|
| 5468 |
|
|
}
|
| 5469 |
|
|
else
|
| 5470 |
|
|
{
|
| 5471 |
|
|
/* Track dynamic relocs needed for local syms too.
|
| 5472 |
|
|
We really need local syms available to do this
|
| 5473 |
|
|
easily. Oh well. */
|
| 5474 |
|
|
asection *s;
|
| 5475 |
|
|
void *vpp;
|
| 5476 |
|
|
Elf_Internal_Sym *isym;
|
| 5477 |
|
|
|
| 5478 |
|
|
isym = bfd_sym_from_r_symndx (&htab->sym_cache,
|
| 5479 |
|
|
abfd, r_symndx);
|
| 5480 |
|
|
if (isym == NULL)
|
| 5481 |
|
|
return FALSE;
|
| 5482 |
|
|
|
| 5483 |
|
|
s = bfd_section_from_elf_index (abfd, isym->st_shndx);
|
| 5484 |
|
|
if (s == NULL)
|
| 5485 |
|
|
s = sec;
|
| 5486 |
|
|
|
| 5487 |
|
|
vpp = &elf_section_data (s)->local_dynrel;
|
| 5488 |
|
|
head = (struct elf_dyn_relocs **) vpp;
|
| 5489 |
|
|
}
|
| 5490 |
|
|
|
| 5491 |
|
|
p = *head;
|
| 5492 |
|
|
if (p == NULL || p->sec != sec)
|
| 5493 |
|
|
{
|
| 5494 |
|
|
p = bfd_alloc (htab->elf.dynobj, sizeof *p);
|
| 5495 |
|
|
if (p == NULL)
|
| 5496 |
|
|
return FALSE;
|
| 5497 |
|
|
p->next = *head;
|
| 5498 |
|
|
*head = p;
|
| 5499 |
|
|
p->sec = sec;
|
| 5500 |
|
|
p->count = 0;
|
| 5501 |
|
|
p->pc_count = 0;
|
| 5502 |
|
|
}
|
| 5503 |
|
|
|
| 5504 |
|
|
p->count += 1;
|
| 5505 |
|
|
if (!must_be_dyn_reloc (info, r_type))
|
| 5506 |
|
|
p->pc_count += 1;
|
| 5507 |
|
|
}
|
| 5508 |
|
|
break;
|
| 5509 |
|
|
|
| 5510 |
|
|
default:
|
| 5511 |
|
|
break;
|
| 5512 |
|
|
}
|
| 5513 |
|
|
}
|
| 5514 |
|
|
|
| 5515 |
|
|
return TRUE;
|
| 5516 |
|
|
}
|
| 5517 |
|
|
|
| 5518 |
|
|
/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
|
| 5519 |
|
|
of the code entry point, and its section. */
|
| 5520 |
|
|
|
| 5521 |
|
|
static bfd_vma
|
| 5522 |
|
|
opd_entry_value (asection *opd_sec,
|
| 5523 |
|
|
bfd_vma offset,
|
| 5524 |
|
|
asection **code_sec,
|
| 5525 |
|
|
bfd_vma *code_off)
|
| 5526 |
|
|
{
|
| 5527 |
|
|
bfd *opd_bfd = opd_sec->owner;
|
| 5528 |
|
|
Elf_Internal_Rela *relocs;
|
| 5529 |
|
|
Elf_Internal_Rela *lo, *hi, *look;
|
| 5530 |
|
|
bfd_vma val;
|
| 5531 |
|
|
|
| 5532 |
166 |
khays |
/* No relocs implies we are linking a --just-symbols object, or looking
|
| 5533 |
|
|
at a final linked executable with addr2line or somesuch. */
|
| 5534 |
14 |
khays |
if (opd_sec->reloc_count == 0)
|
| 5535 |
|
|
{
|
| 5536 |
|
|
char buf[8];
|
| 5537 |
|
|
|
| 5538 |
|
|
if (!bfd_get_section_contents (opd_bfd, opd_sec, buf, offset, 8))
|
| 5539 |
|
|
return (bfd_vma) -1;
|
| 5540 |
|
|
|
| 5541 |
|
|
val = bfd_get_64 (opd_bfd, buf);
|
| 5542 |
|
|
if (code_sec != NULL)
|
| 5543 |
|
|
{
|
| 5544 |
|
|
asection *sec, *likely = NULL;
|
| 5545 |
|
|
for (sec = opd_bfd->sections; sec != NULL; sec = sec->next)
|
| 5546 |
|
|
if (sec->vma <= val
|
| 5547 |
|
|
&& (sec->flags & SEC_LOAD) != 0
|
| 5548 |
|
|
&& (sec->flags & SEC_ALLOC) != 0)
|
| 5549 |
|
|
likely = sec;
|
| 5550 |
|
|
if (likely != NULL)
|
| 5551 |
|
|
{
|
| 5552 |
|
|
*code_sec = likely;
|
| 5553 |
|
|
if (code_off != NULL)
|
| 5554 |
|
|
*code_off = val - likely->vma;
|
| 5555 |
|
|
}
|
| 5556 |
|
|
}
|
| 5557 |
|
|
return val;
|
| 5558 |
|
|
}
|
| 5559 |
|
|
|
| 5560 |
|
|
BFD_ASSERT (is_ppc64_elf (opd_bfd));
|
| 5561 |
|
|
|
| 5562 |
|
|
relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs;
|
| 5563 |
|
|
if (relocs == NULL)
|
| 5564 |
|
|
relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE);
|
| 5565 |
|
|
|
| 5566 |
|
|
/* Go find the opd reloc at the sym address. */
|
| 5567 |
|
|
lo = relocs;
|
| 5568 |
|
|
BFD_ASSERT (lo != NULL);
|
| 5569 |
|
|
hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */
|
| 5570 |
|
|
val = (bfd_vma) -1;
|
| 5571 |
|
|
while (lo < hi)
|
| 5572 |
|
|
{
|
| 5573 |
|
|
look = lo + (hi - lo) / 2;
|
| 5574 |
|
|
if (look->r_offset < offset)
|
| 5575 |
|
|
lo = look + 1;
|
| 5576 |
|
|
else if (look->r_offset > offset)
|
| 5577 |
|
|
hi = look;
|
| 5578 |
|
|
else
|
| 5579 |
|
|
{
|
| 5580 |
|
|
Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd);
|
| 5581 |
|
|
|
| 5582 |
|
|
if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64
|
| 5583 |
|
|
&& ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC)
|
| 5584 |
|
|
{
|
| 5585 |
|
|
unsigned long symndx = ELF64_R_SYM (look->r_info);
|
| 5586 |
|
|
asection *sec;
|
| 5587 |
|
|
|
| 5588 |
|
|
if (symndx < symtab_hdr->sh_info)
|
| 5589 |
|
|
{
|
| 5590 |
|
|
Elf_Internal_Sym *sym;
|
| 5591 |
|
|
|
| 5592 |
|
|
sym = (Elf_Internal_Sym *) symtab_hdr->contents;
|
| 5593 |
|
|
if (sym == NULL)
|
| 5594 |
|
|
{
|
| 5595 |
|
|
sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr,
|
| 5596 |
|
|
symtab_hdr->sh_info,
|
| 5597 |
|
|
0, NULL, NULL, NULL);
|
| 5598 |
|
|
if (sym == NULL)
|
| 5599 |
|
|
break;
|
| 5600 |
|
|
symtab_hdr->contents = (bfd_byte *) sym;
|
| 5601 |
|
|
}
|
| 5602 |
|
|
|
| 5603 |
|
|
sym += symndx;
|
| 5604 |
|
|
val = sym->st_value;
|
| 5605 |
|
|
sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx);
|
| 5606 |
|
|
BFD_ASSERT ((sec->flags & SEC_MERGE) == 0);
|
| 5607 |
|
|
}
|
| 5608 |
|
|
else
|
| 5609 |
|
|
{
|
| 5610 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
| 5611 |
|
|
struct elf_link_hash_entry *rh;
|
| 5612 |
|
|
|
| 5613 |
|
|
sym_hashes = elf_sym_hashes (opd_bfd);
|
| 5614 |
|
|
rh = sym_hashes[symndx - symtab_hdr->sh_info];
|
| 5615 |
|
|
rh = elf_follow_link (rh);
|
| 5616 |
|
|
BFD_ASSERT (rh->root.type == bfd_link_hash_defined
|
| 5617 |
|
|
|| rh->root.type == bfd_link_hash_defweak);
|
| 5618 |
|
|
val = rh->root.u.def.value;
|
| 5619 |
|
|
sec = rh->root.u.def.section;
|
| 5620 |
|
|
}
|
| 5621 |
|
|
val += look->r_addend;
|
| 5622 |
|
|
if (code_off != NULL)
|
| 5623 |
|
|
*code_off = val;
|
| 5624 |
|
|
if (code_sec != NULL)
|
| 5625 |
|
|
*code_sec = sec;
|
| 5626 |
|
|
if (sec != NULL && sec->output_section != NULL)
|
| 5627 |
|
|
val += sec->output_section->vma + sec->output_offset;
|
| 5628 |
|
|
}
|
| 5629 |
|
|
break;
|
| 5630 |
|
|
}
|
| 5631 |
|
|
}
|
| 5632 |
|
|
|
| 5633 |
|
|
return val;
|
| 5634 |
|
|
}
|
| 5635 |
|
|
|
| 5636 |
166 |
khays |
/* Return TRUE iff the ELF symbol SYM might be a function. Set *CODE_SEC
|
| 5637 |
|
|
and *CODE_OFF to the function's entry point. */
|
| 5638 |
|
|
|
| 5639 |
|
|
static bfd_boolean
|
| 5640 |
|
|
ppc64_elf_maybe_function_sym (const asymbol *sym,
|
| 5641 |
|
|
asection **code_sec, bfd_vma *code_off)
|
| 5642 |
|
|
{
|
| 5643 |
|
|
if (_bfd_elf_maybe_function_sym (sym, code_sec, code_off))
|
| 5644 |
|
|
{
|
| 5645 |
|
|
if (strcmp (sym->section->name, ".opd") == 0)
|
| 5646 |
|
|
opd_entry_value (sym->section, sym->value, code_sec, code_off);
|
| 5647 |
|
|
return TRUE;
|
| 5648 |
|
|
}
|
| 5649 |
|
|
return FALSE;
|
| 5650 |
|
|
}
|
| 5651 |
|
|
|
| 5652 |
14 |
khays |
/* Return true if symbol is defined in a regular object file. */
|
| 5653 |
|
|
|
| 5654 |
|
|
static bfd_boolean
|
| 5655 |
|
|
is_static_defined (struct elf_link_hash_entry *h)
|
| 5656 |
|
|
{
|
| 5657 |
|
|
return ((h->root.type == bfd_link_hash_defined
|
| 5658 |
|
|
|| h->root.type == bfd_link_hash_defweak)
|
| 5659 |
|
|
&& h->root.u.def.section != NULL
|
| 5660 |
|
|
&& h->root.u.def.section->output_section != NULL);
|
| 5661 |
|
|
}
|
| 5662 |
|
|
|
| 5663 |
|
|
/* If FDH is a function descriptor symbol, return the associated code
|
| 5664 |
|
|
entry symbol if it is defined. Return NULL otherwise. */
|
| 5665 |
|
|
|
| 5666 |
|
|
static struct ppc_link_hash_entry *
|
| 5667 |
|
|
defined_code_entry (struct ppc_link_hash_entry *fdh)
|
| 5668 |
|
|
{
|
| 5669 |
|
|
if (fdh->is_func_descriptor)
|
| 5670 |
|
|
{
|
| 5671 |
|
|
struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh);
|
| 5672 |
|
|
if (fh->elf.root.type == bfd_link_hash_defined
|
| 5673 |
|
|
|| fh->elf.root.type == bfd_link_hash_defweak)
|
| 5674 |
|
|
return fh;
|
| 5675 |
|
|
}
|
| 5676 |
|
|
return NULL;
|
| 5677 |
|
|
}
|
| 5678 |
|
|
|
| 5679 |
|
|
/* If FH is a function code entry symbol, return the associated
|
| 5680 |
|
|
function descriptor symbol if it is defined. Return NULL otherwise. */
|
| 5681 |
|
|
|
| 5682 |
|
|
static struct ppc_link_hash_entry *
|
| 5683 |
|
|
defined_func_desc (struct ppc_link_hash_entry *fh)
|
| 5684 |
|
|
{
|
| 5685 |
|
|
if (fh->oh != NULL
|
| 5686 |
|
|
&& fh->oh->is_func_descriptor)
|
| 5687 |
|
|
{
|
| 5688 |
|
|
struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh);
|
| 5689 |
|
|
if (fdh->elf.root.type == bfd_link_hash_defined
|
| 5690 |
|
|
|| fdh->elf.root.type == bfd_link_hash_defweak)
|
| 5691 |
|
|
return fdh;
|
| 5692 |
|
|
}
|
| 5693 |
|
|
return NULL;
|
| 5694 |
|
|
}
|
| 5695 |
|
|
|
| 5696 |
|
|
/* Mark all our entry sym sections, both opd and code section. */
|
| 5697 |
|
|
|
| 5698 |
|
|
static void
|
| 5699 |
|
|
ppc64_elf_gc_keep (struct bfd_link_info *info)
|
| 5700 |
|
|
{
|
| 5701 |
|
|
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
| 5702 |
|
|
struct bfd_sym_chain *sym;
|
| 5703 |
|
|
|
| 5704 |
|
|
if (htab == NULL)
|
| 5705 |
|
|
return;
|
| 5706 |
|
|
|
| 5707 |
|
|
for (sym = info->gc_sym_list; sym != NULL; sym = sym->next)
|
| 5708 |
|
|
{
|
| 5709 |
|
|
struct ppc_link_hash_entry *eh, *fh;
|
| 5710 |
|
|
asection *sec;
|
| 5711 |
|
|
|
| 5712 |
|
|
eh = (struct ppc_link_hash_entry *)
|
| 5713 |
|
|
elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE);
|
| 5714 |
|
|
if (eh == NULL)
|
| 5715 |
|
|
continue;
|
| 5716 |
|
|
if (eh->elf.root.type != bfd_link_hash_defined
|
| 5717 |
|
|
&& eh->elf.root.type != bfd_link_hash_defweak)
|
| 5718 |
|
|
continue;
|
| 5719 |
|
|
|
| 5720 |
|
|
fh = defined_code_entry (eh);
|
| 5721 |
|
|
if (fh != NULL)
|
| 5722 |
|
|
{
|
| 5723 |
|
|
sec = fh->elf.root.u.def.section;
|
| 5724 |
|
|
sec->flags |= SEC_KEEP;
|
| 5725 |
|
|
}
|
| 5726 |
|
|
else if (get_opd_info (eh->elf.root.u.def.section) != NULL
|
| 5727 |
|
|
&& opd_entry_value (eh->elf.root.u.def.section,
|
| 5728 |
|
|
eh->elf.root.u.def.value,
|
| 5729 |
|
|
&sec, NULL) != (bfd_vma) -1)
|
| 5730 |
|
|
sec->flags |= SEC_KEEP;
|
| 5731 |
|
|
|
| 5732 |
|
|
sec = eh->elf.root.u.def.section;
|
| 5733 |
|
|
sec->flags |= SEC_KEEP;
|
| 5734 |
|
|
}
|
| 5735 |
|
|
}
|
| 5736 |
|
|
|
| 5737 |
|
|
/* Mark sections containing dynamically referenced symbols. When
|
| 5738 |
|
|
building shared libraries, we must assume that any visible symbol is
|
| 5739 |
|
|
referenced. */
|
| 5740 |
|
|
|
| 5741 |
|
|
static bfd_boolean
|
| 5742 |
|
|
ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf)
|
| 5743 |
|
|
{
|
| 5744 |
|
|
struct bfd_link_info *info = (struct bfd_link_info *) inf;
|
| 5745 |
|
|
struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
|
| 5746 |
|
|
struct ppc_link_hash_entry *fdh;
|
| 5747 |
|
|
|
| 5748 |
|
|
/* Dynamic linking info is on the func descriptor sym. */
|
| 5749 |
|
|
fdh = defined_func_desc (eh);
|
| 5750 |
|
|
if (fdh != NULL)
|
| 5751 |
|
|
eh = fdh;
|
| 5752 |
|
|
|
| 5753 |
|
|
if ((eh->elf.root.type == bfd_link_hash_defined
|
| 5754 |
|
|
|| eh->elf.root.type == bfd_link_hash_defweak)
|
| 5755 |
|
|
&& (eh->elf.ref_dynamic
|
| 5756 |
|
|
|| (!info->executable
|
| 5757 |
|
|
&& eh->elf.def_regular
|
| 5758 |
|
|
&& ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL
|
| 5759 |
163 |
khays |
&& ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN
|
| 5760 |
|
|
&& (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL
|
| 5761 |
|
|
|| !bfd_hide_sym_by_version (info->version_info,
|
| 5762 |
|
|
eh->elf.root.root.string)))))
|
| 5763 |
14 |
khays |
{
|
| 5764 |
|
|
asection *code_sec;
|
| 5765 |
|
|
struct ppc_link_hash_entry *fh;
|
| 5766 |
|
|
|
| 5767 |
|
|
eh->elf.root.u.def.section->flags |= SEC_KEEP;
|
| 5768 |
|
|
|
| 5769 |
|
|
/* Function descriptor syms cause the associated
|
| 5770 |
|
|
function code sym section to be marked. */
|
| 5771 |
|
|
fh = defined_code_entry (eh);
|
| 5772 |
|
|
if (fh != NULL)
|
| 5773 |
|
|
{
|
| 5774 |
|
|
code_sec = fh->elf.root.u.def.section;
|
| 5775 |
|
|
code_sec->flags |= SEC_KEEP;
|
| 5776 |
|
|
}
|
| 5777 |
|
|
else if (get_opd_info (eh->elf.root.u.def.section) != NULL
|
| 5778 |
|
|
&& opd_entry_value (eh->elf.root.u.def.section,
|
| 5779 |
|
|
eh->elf.root.u.def.value,
|
| 5780 |
|
|
&code_sec, NULL) != (bfd_vma) -1)
|
| 5781 |
|
|
code_sec->flags |= SEC_KEEP;
|
| 5782 |
|
|
}
|
| 5783 |
|
|
|
| 5784 |
|
|
return TRUE;
|
| 5785 |
|
|
}
|
| 5786 |
|
|
|
| 5787 |
|
|
/* Return the section that should be marked against GC for a given
|
| 5788 |
|
|
relocation. */
|
| 5789 |
|
|
|
| 5790 |
|
|
static asection *
|
| 5791 |
|
|
ppc64_elf_gc_mark_hook (asection *sec,
|
| 5792 |
|
|
struct bfd_link_info *info,
|
| 5793 |
|
|
Elf_Internal_Rela *rel,
|
| 5794 |
|
|
struct elf_link_hash_entry *h,
|
| 5795 |
|
|
Elf_Internal_Sym *sym)
|
| 5796 |
|
|
{
|
| 5797 |
|
|
asection *rsec;
|
| 5798 |
|
|
|
| 5799 |
|
|
/* Syms return NULL if we're marking .opd, so we avoid marking all
|
| 5800 |
|
|
function sections, as all functions are referenced in .opd. */
|
| 5801 |
|
|
rsec = NULL;
|
| 5802 |
|
|
if (get_opd_info (sec) != NULL)
|
| 5803 |
|
|
return rsec;
|
| 5804 |
|
|
|
| 5805 |
|
|
if (h != NULL)
|
| 5806 |
|
|
{
|
| 5807 |
|
|
enum elf_ppc64_reloc_type r_type;
|
| 5808 |
|
|
struct ppc_link_hash_entry *eh, *fh, *fdh;
|
| 5809 |
|
|
|
| 5810 |
|
|
r_type = ELF64_R_TYPE (rel->r_info);
|
| 5811 |
|
|
switch (r_type)
|
| 5812 |
|
|
{
|
| 5813 |
|
|
case R_PPC64_GNU_VTINHERIT:
|
| 5814 |
|
|
case R_PPC64_GNU_VTENTRY:
|
| 5815 |
|
|
break;
|
| 5816 |
|
|
|
| 5817 |
|
|
default:
|
| 5818 |
|
|
switch (h->root.type)
|
| 5819 |
|
|
{
|
| 5820 |
|
|
case bfd_link_hash_defined:
|
| 5821 |
|
|
case bfd_link_hash_defweak:
|
| 5822 |
|
|
eh = (struct ppc_link_hash_entry *) h;
|
| 5823 |
|
|
fdh = defined_func_desc (eh);
|
| 5824 |
|
|
if (fdh != NULL)
|
| 5825 |
|
|
eh = fdh;
|
| 5826 |
|
|
|
| 5827 |
|
|
/* Function descriptor syms cause the associated
|
| 5828 |
|
|
function code sym section to be marked. */
|
| 5829 |
|
|
fh = defined_code_entry (eh);
|
| 5830 |
|
|
if (fh != NULL)
|
| 5831 |
|
|
{
|
| 5832 |
|
|
/* They also mark their opd section. */
|
| 5833 |
|
|
eh->elf.root.u.def.section->gc_mark = 1;
|
| 5834 |
|
|
|
| 5835 |
|
|
rsec = fh->elf.root.u.def.section;
|
| 5836 |
|
|
}
|
| 5837 |
|
|
else if (get_opd_info (eh->elf.root.u.def.section) != NULL
|
| 5838 |
|
|
&& opd_entry_value (eh->elf.root.u.def.section,
|
| 5839 |
|
|
eh->elf.root.u.def.value,
|
| 5840 |
|
|
&rsec, NULL) != (bfd_vma) -1)
|
| 5841 |
|
|
eh->elf.root.u.def.section->gc_mark = 1;
|
| 5842 |
|
|
else
|
| 5843 |
|
|
rsec = h->root.u.def.section;
|
| 5844 |
|
|
break;
|
| 5845 |
|
|
|
| 5846 |
|
|
case bfd_link_hash_common:
|
| 5847 |
|
|
rsec = h->root.u.c.p->section;
|
| 5848 |
|
|
break;
|
| 5849 |
|
|
|
| 5850 |
|
|
default:
|
| 5851 |
|
|
return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
|
| 5852 |
|
|
}
|
| 5853 |
|
|
}
|
| 5854 |
|
|
}
|
| 5855 |
|
|
else
|
| 5856 |
|
|
{
|
| 5857 |
|
|
struct _opd_sec_data *opd;
|
| 5858 |
|
|
|
| 5859 |
|
|
rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
|
| 5860 |
|
|
opd = get_opd_info (rsec);
|
| 5861 |
|
|
if (opd != NULL && opd->func_sec != NULL)
|
| 5862 |
|
|
{
|
| 5863 |
|
|
rsec->gc_mark = 1;
|
| 5864 |
|
|
|
| 5865 |
|
|
rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8];
|
| 5866 |
|
|
}
|
| 5867 |
|
|
}
|
| 5868 |
|
|
|
| 5869 |
|
|
return rsec;
|
| 5870 |
|
|
}
|
| 5871 |
|
|
|
| 5872 |
|
|
/* Update the .got, .plt. and dynamic reloc reference counts for the
|
| 5873 |
|
|
section being removed. */
|
| 5874 |
|
|
|
| 5875 |
|
|
static bfd_boolean
|
| 5876 |
|
|
ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
|
| 5877 |
|
|
asection *sec, const Elf_Internal_Rela *relocs)
|
| 5878 |
|
|
{
|
| 5879 |
|
|
struct ppc_link_hash_table *htab;
|
| 5880 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 5881 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
| 5882 |
|
|
struct got_entry **local_got_ents;
|
| 5883 |
|
|
const Elf_Internal_Rela *rel, *relend;
|
| 5884 |
|
|
|
| 5885 |
|
|
if (info->relocatable)
|
| 5886 |
|
|
return TRUE;
|
| 5887 |
|
|
|
| 5888 |
|
|
if ((sec->flags & SEC_ALLOC) == 0)
|
| 5889 |
|
|
return TRUE;
|
| 5890 |
|
|
|
| 5891 |
|
|
elf_section_data (sec)->local_dynrel = NULL;
|
| 5892 |
|
|
|
| 5893 |
|
|
htab = ppc_hash_table (info);
|
| 5894 |
|
|
if (htab == NULL)
|
| 5895 |
|
|
return FALSE;
|
| 5896 |
|
|
|
| 5897 |
|
|
symtab_hdr = &elf_symtab_hdr (abfd);
|
| 5898 |
|
|
sym_hashes = elf_sym_hashes (abfd);
|
| 5899 |
|
|
local_got_ents = elf_local_got_ents (abfd);
|
| 5900 |
|
|
|
| 5901 |
|
|
relend = relocs + sec->reloc_count;
|
| 5902 |
|
|
for (rel = relocs; rel < relend; rel++)
|
| 5903 |
|
|
{
|
| 5904 |
|
|
unsigned long r_symndx;
|
| 5905 |
|
|
enum elf_ppc64_reloc_type r_type;
|
| 5906 |
|
|
struct elf_link_hash_entry *h = NULL;
|
| 5907 |
|
|
unsigned char tls_type = 0;
|
| 5908 |
|
|
|
| 5909 |
|
|
r_symndx = ELF64_R_SYM (rel->r_info);
|
| 5910 |
|
|
r_type = ELF64_R_TYPE (rel->r_info);
|
| 5911 |
|
|
if (r_symndx >= symtab_hdr->sh_info)
|
| 5912 |
|
|
{
|
| 5913 |
|
|
struct ppc_link_hash_entry *eh;
|
| 5914 |
|
|
struct elf_dyn_relocs **pp;
|
| 5915 |
|
|
struct elf_dyn_relocs *p;
|
| 5916 |
|
|
|
| 5917 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
| 5918 |
|
|
h = elf_follow_link (h);
|
| 5919 |
|
|
eh = (struct ppc_link_hash_entry *) h;
|
| 5920 |
|
|
|
| 5921 |
|
|
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
|
| 5922 |
|
|
if (p->sec == sec)
|
| 5923 |
|
|
{
|
| 5924 |
|
|
/* Everything must go for SEC. */
|
| 5925 |
|
|
*pp = p->next;
|
| 5926 |
|
|
break;
|
| 5927 |
|
|
}
|
| 5928 |
|
|
}
|
| 5929 |
|
|
|
| 5930 |
|
|
if (is_branch_reloc (r_type))
|
| 5931 |
|
|
{
|
| 5932 |
|
|
struct plt_entry **ifunc = NULL;
|
| 5933 |
|
|
if (h != NULL)
|
| 5934 |
|
|
{
|
| 5935 |
|
|
if (h->type == STT_GNU_IFUNC)
|
| 5936 |
|
|
ifunc = &h->plt.plist;
|
| 5937 |
|
|
}
|
| 5938 |
|
|
else if (local_got_ents != NULL)
|
| 5939 |
|
|
{
|
| 5940 |
|
|
struct plt_entry **local_plt = (struct plt_entry **)
|
| 5941 |
|
|
(local_got_ents + symtab_hdr->sh_info);
|
| 5942 |
|
|
unsigned char *local_got_tls_masks = (unsigned char *)
|
| 5943 |
|
|
(local_plt + symtab_hdr->sh_info);
|
| 5944 |
|
|
if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
|
| 5945 |
|
|
ifunc = local_plt + r_symndx;
|
| 5946 |
|
|
}
|
| 5947 |
|
|
if (ifunc != NULL)
|
| 5948 |
|
|
{
|
| 5949 |
|
|
struct plt_entry *ent;
|
| 5950 |
|
|
|
| 5951 |
|
|
for (ent = *ifunc; ent != NULL; ent = ent->next)
|
| 5952 |
|
|
if (ent->addend == rel->r_addend)
|
| 5953 |
|
|
break;
|
| 5954 |
|
|
if (ent == NULL)
|
| 5955 |
|
|
abort ();
|
| 5956 |
|
|
if (ent->plt.refcount > 0)
|
| 5957 |
|
|
ent->plt.refcount -= 1;
|
| 5958 |
|
|
continue;
|
| 5959 |
|
|
}
|
| 5960 |
|
|
}
|
| 5961 |
|
|
|
| 5962 |
|
|
switch (r_type)
|
| 5963 |
|
|
{
|
| 5964 |
|
|
case R_PPC64_GOT_TLSLD16:
|
| 5965 |
|
|
case R_PPC64_GOT_TLSLD16_LO:
|
| 5966 |
|
|
case R_PPC64_GOT_TLSLD16_HI:
|
| 5967 |
|
|
case R_PPC64_GOT_TLSLD16_HA:
|
| 5968 |
|
|
tls_type = TLS_TLS | TLS_LD;
|
| 5969 |
|
|
goto dogot;
|
| 5970 |
|
|
|
| 5971 |
|
|
case R_PPC64_GOT_TLSGD16:
|
| 5972 |
|
|
case R_PPC64_GOT_TLSGD16_LO:
|
| 5973 |
|
|
case R_PPC64_GOT_TLSGD16_HI:
|
| 5974 |
|
|
case R_PPC64_GOT_TLSGD16_HA:
|
| 5975 |
|
|
tls_type = TLS_TLS | TLS_GD;
|
| 5976 |
|
|
goto dogot;
|
| 5977 |
|
|
|
| 5978 |
|
|
case R_PPC64_GOT_TPREL16_DS:
|
| 5979 |
|
|
case R_PPC64_GOT_TPREL16_LO_DS:
|
| 5980 |
|
|
case R_PPC64_GOT_TPREL16_HI:
|
| 5981 |
|
|
case R_PPC64_GOT_TPREL16_HA:
|
| 5982 |
|
|
tls_type = TLS_TLS | TLS_TPREL;
|
| 5983 |
|
|
goto dogot;
|
| 5984 |
|
|
|
| 5985 |
|
|
case R_PPC64_GOT_DTPREL16_DS:
|
| 5986 |
|
|
case R_PPC64_GOT_DTPREL16_LO_DS:
|
| 5987 |
|
|
case R_PPC64_GOT_DTPREL16_HI:
|
| 5988 |
|
|
case R_PPC64_GOT_DTPREL16_HA:
|
| 5989 |
|
|
tls_type = TLS_TLS | TLS_DTPREL;
|
| 5990 |
|
|
goto dogot;
|
| 5991 |
|
|
|
| 5992 |
|
|
case R_PPC64_GOT16:
|
| 5993 |
|
|
case R_PPC64_GOT16_DS:
|
| 5994 |
|
|
case R_PPC64_GOT16_HA:
|
| 5995 |
|
|
case R_PPC64_GOT16_HI:
|
| 5996 |
|
|
case R_PPC64_GOT16_LO:
|
| 5997 |
|
|
case R_PPC64_GOT16_LO_DS:
|
| 5998 |
|
|
dogot:
|
| 5999 |
|
|
{
|
| 6000 |
|
|
struct got_entry *ent;
|
| 6001 |
|
|
|
| 6002 |
|
|
if (h != NULL)
|
| 6003 |
|
|
ent = h->got.glist;
|
| 6004 |
|
|
else
|
| 6005 |
|
|
ent = local_got_ents[r_symndx];
|
| 6006 |
|
|
|
| 6007 |
|
|
for (; ent != NULL; ent = ent->next)
|
| 6008 |
|
|
if (ent->addend == rel->r_addend
|
| 6009 |
|
|
&& ent->owner == abfd
|
| 6010 |
|
|
&& ent->tls_type == tls_type)
|
| 6011 |
|
|
break;
|
| 6012 |
|
|
if (ent == NULL)
|
| 6013 |
|
|
abort ();
|
| 6014 |
|
|
if (ent->got.refcount > 0)
|
| 6015 |
|
|
ent->got.refcount -= 1;
|
| 6016 |
|
|
}
|
| 6017 |
|
|
break;
|
| 6018 |
|
|
|
| 6019 |
|
|
case R_PPC64_PLT16_HA:
|
| 6020 |
|
|
case R_PPC64_PLT16_HI:
|
| 6021 |
|
|
case R_PPC64_PLT16_LO:
|
| 6022 |
|
|
case R_PPC64_PLT32:
|
| 6023 |
|
|
case R_PPC64_PLT64:
|
| 6024 |
|
|
case R_PPC64_REL14:
|
| 6025 |
|
|
case R_PPC64_REL14_BRNTAKEN:
|
| 6026 |
|
|
case R_PPC64_REL14_BRTAKEN:
|
| 6027 |
|
|
case R_PPC64_REL24:
|
| 6028 |
|
|
if (h != NULL)
|
| 6029 |
|
|
{
|
| 6030 |
|
|
struct plt_entry *ent;
|
| 6031 |
|
|
|
| 6032 |
|
|
for (ent = h->plt.plist; ent != NULL; ent = ent->next)
|
| 6033 |
|
|
if (ent->addend == rel->r_addend)
|
| 6034 |
|
|
break;
|
| 6035 |
|
|
if (ent != NULL && ent->plt.refcount > 0)
|
| 6036 |
|
|
ent->plt.refcount -= 1;
|
| 6037 |
|
|
}
|
| 6038 |
|
|
break;
|
| 6039 |
|
|
|
| 6040 |
|
|
default:
|
| 6041 |
|
|
break;
|
| 6042 |
|
|
}
|
| 6043 |
|
|
}
|
| 6044 |
|
|
return TRUE;
|
| 6045 |
|
|
}
|
| 6046 |
|
|
|
| 6047 |
|
|
/* The maximum size of .sfpr. */
|
| 6048 |
|
|
#define SFPR_MAX (218*4)
|
| 6049 |
|
|
|
| 6050 |
|
|
struct sfpr_def_parms
|
| 6051 |
|
|
{
|
| 6052 |
|
|
const char name[12];
|
| 6053 |
|
|
unsigned char lo, hi;
|
| 6054 |
|
|
bfd_byte * (*write_ent) (bfd *, bfd_byte *, int);
|
| 6055 |
|
|
bfd_byte * (*write_tail) (bfd *, bfd_byte *, int);
|
| 6056 |
|
|
};
|
| 6057 |
|
|
|
| 6058 |
|
|
/* Auto-generate _save*, _rest* functions in .sfpr. */
|
| 6059 |
|
|
|
| 6060 |
|
|
static bfd_boolean
|
| 6061 |
|
|
sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm)
|
| 6062 |
|
|
{
|
| 6063 |
|
|
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
| 6064 |
|
|
unsigned int i;
|
| 6065 |
|
|
size_t len = strlen (parm->name);
|
| 6066 |
|
|
bfd_boolean writing = FALSE;
|
| 6067 |
|
|
char sym[16];
|
| 6068 |
|
|
|
| 6069 |
|
|
if (htab == NULL)
|
| 6070 |
|
|
return FALSE;
|
| 6071 |
|
|
|
| 6072 |
|
|
memcpy (sym, parm->name, len);
|
| 6073 |
|
|
sym[len + 2] = 0;
|
| 6074 |
|
|
|
| 6075 |
|
|
for (i = parm->lo; i <= parm->hi; i++)
|
| 6076 |
|
|
{
|
| 6077 |
|
|
struct elf_link_hash_entry *h;
|
| 6078 |
|
|
|
| 6079 |
|
|
sym[len + 0] = i / 10 + '0';
|
| 6080 |
|
|
sym[len + 1] = i % 10 + '0';
|
| 6081 |
|
|
h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE);
|
| 6082 |
|
|
if (h != NULL
|
| 6083 |
|
|
&& !h->def_regular)
|
| 6084 |
|
|
{
|
| 6085 |
|
|
h->root.type = bfd_link_hash_defined;
|
| 6086 |
|
|
h->root.u.def.section = htab->sfpr;
|
| 6087 |
|
|
h->root.u.def.value = htab->sfpr->size;
|
| 6088 |
|
|
h->type = STT_FUNC;
|
| 6089 |
|
|
h->def_regular = 1;
|
| 6090 |
|
|
_bfd_elf_link_hash_hide_symbol (info, h, TRUE);
|
| 6091 |
|
|
writing = TRUE;
|
| 6092 |
|
|
if (htab->sfpr->contents == NULL)
|
| 6093 |
|
|
{
|
| 6094 |
|
|
htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX);
|
| 6095 |
|
|
if (htab->sfpr->contents == NULL)
|
| 6096 |
|
|
return FALSE;
|
| 6097 |
|
|
}
|
| 6098 |
|
|
}
|
| 6099 |
|
|
if (writing)
|
| 6100 |
|
|
{
|
| 6101 |
|
|
bfd_byte *p = htab->sfpr->contents + htab->sfpr->size;
|
| 6102 |
|
|
if (i != parm->hi)
|
| 6103 |
|
|
p = (*parm->write_ent) (htab->elf.dynobj, p, i);
|
| 6104 |
|
|
else
|
| 6105 |
|
|
p = (*parm->write_tail) (htab->elf.dynobj, p, i);
|
| 6106 |
|
|
htab->sfpr->size = p - htab->sfpr->contents;
|
| 6107 |
|
|
}
|
| 6108 |
|
|
}
|
| 6109 |
|
|
|
| 6110 |
|
|
return TRUE;
|
| 6111 |
|
|
}
|
| 6112 |
|
|
|
| 6113 |
|
|
static bfd_byte *
|
| 6114 |
|
|
savegpr0 (bfd *abfd, bfd_byte *p, int r)
|
| 6115 |
|
|
{
|
| 6116 |
|
|
bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
|
| 6117 |
|
|
return p + 4;
|
| 6118 |
|
|
}
|
| 6119 |
|
|
|
| 6120 |
|
|
static bfd_byte *
|
| 6121 |
|
|
savegpr0_tail (bfd *abfd, bfd_byte *p, int r)
|
| 6122 |
|
|
{
|
| 6123 |
|
|
p = savegpr0 (abfd, p, r);
|
| 6124 |
|
|
bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
|
| 6125 |
|
|
p = p + 4;
|
| 6126 |
|
|
bfd_put_32 (abfd, BLR, p);
|
| 6127 |
|
|
return p + 4;
|
| 6128 |
|
|
}
|
| 6129 |
|
|
|
| 6130 |
|
|
static bfd_byte *
|
| 6131 |
|
|
restgpr0 (bfd *abfd, bfd_byte *p, int r)
|
| 6132 |
|
|
{
|
| 6133 |
|
|
bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
|
| 6134 |
|
|
return p + 4;
|
| 6135 |
|
|
}
|
| 6136 |
|
|
|
| 6137 |
|
|
static bfd_byte *
|
| 6138 |
|
|
restgpr0_tail (bfd *abfd, bfd_byte *p, int r)
|
| 6139 |
|
|
{
|
| 6140 |
|
|
bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
|
| 6141 |
|
|
p = p + 4;
|
| 6142 |
|
|
p = restgpr0 (abfd, p, r);
|
| 6143 |
|
|
bfd_put_32 (abfd, MTLR_R0, p);
|
| 6144 |
|
|
p = p + 4;
|
| 6145 |
|
|
if (r == 29)
|
| 6146 |
|
|
{
|
| 6147 |
|
|
p = restgpr0 (abfd, p, 30);
|
| 6148 |
|
|
p = restgpr0 (abfd, p, 31);
|
| 6149 |
|
|
}
|
| 6150 |
|
|
bfd_put_32 (abfd, BLR, p);
|
| 6151 |
|
|
return p + 4;
|
| 6152 |
|
|
}
|
| 6153 |
|
|
|
| 6154 |
|
|
static bfd_byte *
|
| 6155 |
|
|
savegpr1 (bfd *abfd, bfd_byte *p, int r)
|
| 6156 |
|
|
{
|
| 6157 |
|
|
bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
|
| 6158 |
|
|
return p + 4;
|
| 6159 |
|
|
}
|
| 6160 |
|
|
|
| 6161 |
|
|
static bfd_byte *
|
| 6162 |
|
|
savegpr1_tail (bfd *abfd, bfd_byte *p, int r)
|
| 6163 |
|
|
{
|
| 6164 |
|
|
p = savegpr1 (abfd, p, r);
|
| 6165 |
|
|
bfd_put_32 (abfd, BLR, p);
|
| 6166 |
|
|
return p + 4;
|
| 6167 |
|
|
}
|
| 6168 |
|
|
|
| 6169 |
|
|
static bfd_byte *
|
| 6170 |
|
|
restgpr1 (bfd *abfd, bfd_byte *p, int r)
|
| 6171 |
|
|
{
|
| 6172 |
|
|
bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
|
| 6173 |
|
|
return p + 4;
|
| 6174 |
|
|
}
|
| 6175 |
|
|
|
| 6176 |
|
|
static bfd_byte *
|
| 6177 |
|
|
restgpr1_tail (bfd *abfd, bfd_byte *p, int r)
|
| 6178 |
|
|
{
|
| 6179 |
|
|
p = restgpr1 (abfd, p, r);
|
| 6180 |
|
|
bfd_put_32 (abfd, BLR, p);
|
| 6181 |
|
|
return p + 4;
|
| 6182 |
|
|
}
|
| 6183 |
|
|
|
| 6184 |
|
|
static bfd_byte *
|
| 6185 |
|
|
savefpr (bfd *abfd, bfd_byte *p, int r)
|
| 6186 |
|
|
{
|
| 6187 |
|
|
bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
|
| 6188 |
|
|
return p + 4;
|
| 6189 |
|
|
}
|
| 6190 |
|
|
|
| 6191 |
|
|
static bfd_byte *
|
| 6192 |
|
|
savefpr0_tail (bfd *abfd, bfd_byte *p, int r)
|
| 6193 |
|
|
{
|
| 6194 |
|
|
p = savefpr (abfd, p, r);
|
| 6195 |
|
|
bfd_put_32 (abfd, STD_R0_0R1 + 16, p);
|
| 6196 |
|
|
p = p + 4;
|
| 6197 |
|
|
bfd_put_32 (abfd, BLR, p);
|
| 6198 |
|
|
return p + 4;
|
| 6199 |
|
|
}
|
| 6200 |
|
|
|
| 6201 |
|
|
static bfd_byte *
|
| 6202 |
|
|
restfpr (bfd *abfd, bfd_byte *p, int r)
|
| 6203 |
|
|
{
|
| 6204 |
|
|
bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p);
|
| 6205 |
|
|
return p + 4;
|
| 6206 |
|
|
}
|
| 6207 |
|
|
|
| 6208 |
|
|
static bfd_byte *
|
| 6209 |
|
|
restfpr0_tail (bfd *abfd, bfd_byte *p, int r)
|
| 6210 |
|
|
{
|
| 6211 |
|
|
bfd_put_32 (abfd, LD_R0_0R1 + 16, p);
|
| 6212 |
|
|
p = p + 4;
|
| 6213 |
|
|
p = restfpr (abfd, p, r);
|
| 6214 |
|
|
bfd_put_32 (abfd, MTLR_R0, p);
|
| 6215 |
|
|
p = p + 4;
|
| 6216 |
|
|
if (r == 29)
|
| 6217 |
|
|
{
|
| 6218 |
|
|
p = restfpr (abfd, p, 30);
|
| 6219 |
|
|
p = restfpr (abfd, p, 31);
|
| 6220 |
|
|
}
|
| 6221 |
|
|
bfd_put_32 (abfd, BLR, p);
|
| 6222 |
|
|
return p + 4;
|
| 6223 |
|
|
}
|
| 6224 |
|
|
|
| 6225 |
|
|
static bfd_byte *
|
| 6226 |
|
|
savefpr1_tail (bfd *abfd, bfd_byte *p, int r)
|
| 6227 |
|
|
{
|
| 6228 |
|
|
p = savefpr (abfd, p, r);
|
| 6229 |
|
|
bfd_put_32 (abfd, BLR, p);
|
| 6230 |
|
|
return p + 4;
|
| 6231 |
|
|
}
|
| 6232 |
|
|
|
| 6233 |
|
|
static bfd_byte *
|
| 6234 |
|
|
restfpr1_tail (bfd *abfd, bfd_byte *p, int r)
|
| 6235 |
|
|
{
|
| 6236 |
|
|
p = restfpr (abfd, p, r);
|
| 6237 |
|
|
bfd_put_32 (abfd, BLR, p);
|
| 6238 |
|
|
return p + 4;
|
| 6239 |
|
|
}
|
| 6240 |
|
|
|
| 6241 |
|
|
static bfd_byte *
|
| 6242 |
|
|
savevr (bfd *abfd, bfd_byte *p, int r)
|
| 6243 |
|
|
{
|
| 6244 |
|
|
bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
|
| 6245 |
|
|
p = p + 4;
|
| 6246 |
|
|
bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p);
|
| 6247 |
|
|
return p + 4;
|
| 6248 |
|
|
}
|
| 6249 |
|
|
|
| 6250 |
|
|
static bfd_byte *
|
| 6251 |
|
|
savevr_tail (bfd *abfd, bfd_byte *p, int r)
|
| 6252 |
|
|
{
|
| 6253 |
|
|
p = savevr (abfd, p, r);
|
| 6254 |
|
|
bfd_put_32 (abfd, BLR, p);
|
| 6255 |
|
|
return p + 4;
|
| 6256 |
|
|
}
|
| 6257 |
|
|
|
| 6258 |
|
|
static bfd_byte *
|
| 6259 |
|
|
restvr (bfd *abfd, bfd_byte *p, int r)
|
| 6260 |
|
|
{
|
| 6261 |
|
|
bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p);
|
| 6262 |
|
|
p = p + 4;
|
| 6263 |
|
|
bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p);
|
| 6264 |
|
|
return p + 4;
|
| 6265 |
|
|
}
|
| 6266 |
|
|
|
| 6267 |
|
|
static bfd_byte *
|
| 6268 |
|
|
restvr_tail (bfd *abfd, bfd_byte *p, int r)
|
| 6269 |
|
|
{
|
| 6270 |
|
|
p = restvr (abfd, p, r);
|
| 6271 |
|
|
bfd_put_32 (abfd, BLR, p);
|
| 6272 |
|
|
return p + 4;
|
| 6273 |
|
|
}
|
| 6274 |
|
|
|
| 6275 |
|
|
/* Called via elf_link_hash_traverse to transfer dynamic linking
|
| 6276 |
|
|
information on function code symbol entries to their corresponding
|
| 6277 |
|
|
function descriptor symbol entries. */
|
| 6278 |
|
|
|
| 6279 |
|
|
static bfd_boolean
|
| 6280 |
|
|
func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
|
| 6281 |
|
|
{
|
| 6282 |
|
|
struct bfd_link_info *info;
|
| 6283 |
|
|
struct ppc_link_hash_table *htab;
|
| 6284 |
|
|
struct plt_entry *ent;
|
| 6285 |
|
|
struct ppc_link_hash_entry *fh;
|
| 6286 |
|
|
struct ppc_link_hash_entry *fdh;
|
| 6287 |
|
|
bfd_boolean force_local;
|
| 6288 |
|
|
|
| 6289 |
|
|
fh = (struct ppc_link_hash_entry *) h;
|
| 6290 |
|
|
if (fh->elf.root.type == bfd_link_hash_indirect)
|
| 6291 |
|
|
return TRUE;
|
| 6292 |
|
|
|
| 6293 |
|
|
info = inf;
|
| 6294 |
|
|
htab = ppc_hash_table (info);
|
| 6295 |
|
|
if (htab == NULL)
|
| 6296 |
|
|
return FALSE;
|
| 6297 |
|
|
|
| 6298 |
|
|
/* Resolve undefined references to dot-symbols as the value
|
| 6299 |
|
|
in the function descriptor, if we have one in a regular object.
|
| 6300 |
|
|
This is to satisfy cases like ".quad .foo". Calls to functions
|
| 6301 |
|
|
in dynamic objects are handled elsewhere. */
|
| 6302 |
|
|
if (fh->elf.root.type == bfd_link_hash_undefweak
|
| 6303 |
|
|
&& fh->was_undefined
|
| 6304 |
|
|
&& (fdh = defined_func_desc (fh)) != NULL
|
| 6305 |
|
|
&& get_opd_info (fdh->elf.root.u.def.section) != NULL
|
| 6306 |
|
|
&& opd_entry_value (fdh->elf.root.u.def.section,
|
| 6307 |
|
|
fdh->elf.root.u.def.value,
|
| 6308 |
|
|
&fh->elf.root.u.def.section,
|
| 6309 |
|
|
&fh->elf.root.u.def.value) != (bfd_vma) -1)
|
| 6310 |
|
|
{
|
| 6311 |
|
|
fh->elf.root.type = fdh->elf.root.type;
|
| 6312 |
|
|
fh->elf.forced_local = 1;
|
| 6313 |
|
|
fh->elf.def_regular = fdh->elf.def_regular;
|
| 6314 |
|
|
fh->elf.def_dynamic = fdh->elf.def_dynamic;
|
| 6315 |
|
|
}
|
| 6316 |
|
|
|
| 6317 |
|
|
/* If this is a function code symbol, transfer dynamic linking
|
| 6318 |
|
|
information to the function descriptor symbol. */
|
| 6319 |
|
|
if (!fh->is_func)
|
| 6320 |
|
|
return TRUE;
|
| 6321 |
|
|
|
| 6322 |
|
|
for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next)
|
| 6323 |
|
|
if (ent->plt.refcount > 0)
|
| 6324 |
|
|
break;
|
| 6325 |
|
|
if (ent == NULL
|
| 6326 |
|
|
|| fh->elf.root.root.string[0] != '.'
|
| 6327 |
|
|
|| fh->elf.root.root.string[1] == '\0')
|
| 6328 |
|
|
return TRUE;
|
| 6329 |
|
|
|
| 6330 |
|
|
/* Find the corresponding function descriptor symbol. Create it
|
| 6331 |
|
|
as undefined if necessary. */
|
| 6332 |
|
|
|
| 6333 |
|
|
fdh = lookup_fdh (fh, htab);
|
| 6334 |
|
|
if (fdh == NULL
|
| 6335 |
|
|
&& !info->executable
|
| 6336 |
|
|
&& (fh->elf.root.type == bfd_link_hash_undefined
|
| 6337 |
|
|
|| fh->elf.root.type == bfd_link_hash_undefweak))
|
| 6338 |
|
|
{
|
| 6339 |
|
|
fdh = make_fdh (info, fh);
|
| 6340 |
|
|
if (fdh == NULL)
|
| 6341 |
|
|
return FALSE;
|
| 6342 |
|
|
}
|
| 6343 |
|
|
|
| 6344 |
|
|
/* Fake function descriptors are made undefweak. If the function
|
| 6345 |
|
|
code symbol is strong undefined, make the fake sym the same.
|
| 6346 |
|
|
If the function code symbol is defined, then force the fake
|
| 6347 |
|
|
descriptor local; We can't support overriding of symbols in a
|
| 6348 |
|
|
shared library on a fake descriptor. */
|
| 6349 |
|
|
|
| 6350 |
|
|
if (fdh != NULL
|
| 6351 |
|
|
&& fdh->fake
|
| 6352 |
|
|
&& fdh->elf.root.type == bfd_link_hash_undefweak)
|
| 6353 |
|
|
{
|
| 6354 |
|
|
if (fh->elf.root.type == bfd_link_hash_undefined)
|
| 6355 |
|
|
{
|
| 6356 |
|
|
fdh->elf.root.type = bfd_link_hash_undefined;
|
| 6357 |
|
|
bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
|
| 6358 |
|
|
}
|
| 6359 |
|
|
else if (fh->elf.root.type == bfd_link_hash_defined
|
| 6360 |
|
|
|| fh->elf.root.type == bfd_link_hash_defweak)
|
| 6361 |
|
|
{
|
| 6362 |
|
|
_bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
|
| 6363 |
|
|
}
|
| 6364 |
|
|
}
|
| 6365 |
|
|
|
| 6366 |
|
|
if (fdh != NULL
|
| 6367 |
|
|
&& !fdh->elf.forced_local
|
| 6368 |
|
|
&& (!info->executable
|
| 6369 |
|
|
|| fdh->elf.def_dynamic
|
| 6370 |
|
|
|| fdh->elf.ref_dynamic
|
| 6371 |
|
|
|| (fdh->elf.root.type == bfd_link_hash_undefweak
|
| 6372 |
|
|
&& ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT)))
|
| 6373 |
|
|
{
|
| 6374 |
|
|
if (fdh->elf.dynindx == -1)
|
| 6375 |
|
|
if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf))
|
| 6376 |
|
|
return FALSE;
|
| 6377 |
|
|
fdh->elf.ref_regular |= fh->elf.ref_regular;
|
| 6378 |
|
|
fdh->elf.ref_dynamic |= fh->elf.ref_dynamic;
|
| 6379 |
|
|
fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak;
|
| 6380 |
|
|
fdh->elf.non_got_ref |= fh->elf.non_got_ref;
|
| 6381 |
|
|
if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT)
|
| 6382 |
|
|
{
|
| 6383 |
|
|
move_plt_plist (fh, fdh);
|
| 6384 |
|
|
fdh->elf.needs_plt = 1;
|
| 6385 |
|
|
}
|
| 6386 |
|
|
fdh->is_func_descriptor = 1;
|
| 6387 |
|
|
fdh->oh = fh;
|
| 6388 |
|
|
fh->oh = fdh;
|
| 6389 |
|
|
}
|
| 6390 |
|
|
|
| 6391 |
|
|
/* Now that the info is on the function descriptor, clear the
|
| 6392 |
|
|
function code sym info. Any function code syms for which we
|
| 6393 |
|
|
don't have a definition in a regular file, we force local.
|
| 6394 |
|
|
This prevents a shared library from exporting syms that have
|
| 6395 |
|
|
been imported from another library. Function code syms that
|
| 6396 |
|
|
are really in the library we must leave global to prevent the
|
| 6397 |
|
|
linker dragging in a definition from a static library. */
|
| 6398 |
|
|
force_local = (!fh->elf.def_regular
|
| 6399 |
|
|
|| fdh == NULL
|
| 6400 |
|
|
|| !fdh->elf.def_regular
|
| 6401 |
|
|
|| fdh->elf.forced_local);
|
| 6402 |
|
|
_bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
|
| 6403 |
|
|
|
| 6404 |
|
|
return TRUE;
|
| 6405 |
|
|
}
|
| 6406 |
|
|
|
| 6407 |
|
|
/* Called near the start of bfd_elf_size_dynamic_sections. We use
|
| 6408 |
|
|
this hook to a) provide some gcc support functions, and b) transfer
|
| 6409 |
|
|
dynamic linking information gathered so far on function code symbol
|
| 6410 |
|
|
entries, to their corresponding function descriptor symbol entries. */
|
| 6411 |
|
|
|
| 6412 |
|
|
static bfd_boolean
|
| 6413 |
|
|
ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED,
|
| 6414 |
|
|
struct bfd_link_info *info)
|
| 6415 |
|
|
{
|
| 6416 |
|
|
struct ppc_link_hash_table *htab;
|
| 6417 |
|
|
unsigned int i;
|
| 6418 |
|
|
const struct sfpr_def_parms funcs[] =
|
| 6419 |
|
|
{
|
| 6420 |
|
|
{ "_savegpr0_", 14, 31, savegpr0, savegpr0_tail },
|
| 6421 |
|
|
{ "_restgpr0_", 14, 29, restgpr0, restgpr0_tail },
|
| 6422 |
|
|
{ "_restgpr0_", 30, 31, restgpr0, restgpr0_tail },
|
| 6423 |
|
|
{ "_savegpr1_", 14, 31, savegpr1, savegpr1_tail },
|
| 6424 |
|
|
{ "_restgpr1_", 14, 31, restgpr1, restgpr1_tail },
|
| 6425 |
|
|
{ "_savefpr_", 14, 31, savefpr, savefpr0_tail },
|
| 6426 |
|
|
{ "_restfpr_", 14, 29, restfpr, restfpr0_tail },
|
| 6427 |
|
|
{ "_restfpr_", 30, 31, restfpr, restfpr0_tail },
|
| 6428 |
|
|
{ "._savef", 14, 31, savefpr, savefpr1_tail },
|
| 6429 |
|
|
{ "._restf", 14, 31, restfpr, restfpr1_tail },
|
| 6430 |
|
|
{ "_savevr_", 20, 31, savevr, savevr_tail },
|
| 6431 |
|
|
{ "_restvr_", 20, 31, restvr, restvr_tail }
|
| 6432 |
|
|
};
|
| 6433 |
|
|
|
| 6434 |
|
|
htab = ppc_hash_table (info);
|
| 6435 |
|
|
if (htab == NULL)
|
| 6436 |
|
|
return FALSE;
|
| 6437 |
|
|
|
| 6438 |
|
|
if (htab->sfpr == NULL)
|
| 6439 |
|
|
/* We don't have any relocs. */
|
| 6440 |
|
|
return TRUE;
|
| 6441 |
|
|
|
| 6442 |
|
|
/* Provide any missing _save* and _rest* functions. */
|
| 6443 |
|
|
htab->sfpr->size = 0;
|
| 6444 |
|
|
for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
|
| 6445 |
|
|
if (!sfpr_define (info, &funcs[i]))
|
| 6446 |
|
|
return FALSE;
|
| 6447 |
|
|
|
| 6448 |
|
|
elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);
|
| 6449 |
|
|
|
| 6450 |
|
|
if (htab->sfpr->size == 0)
|
| 6451 |
|
|
htab->sfpr->flags |= SEC_EXCLUDE;
|
| 6452 |
|
|
|
| 6453 |
|
|
return TRUE;
|
| 6454 |
|
|
}
|
| 6455 |
|
|
|
| 6456 |
|
|
/* Adjust a symbol defined by a dynamic object and referenced by a
|
| 6457 |
|
|
regular object. The current definition is in some section of the
|
| 6458 |
|
|
dynamic object, but we're not including those sections. We have to
|
| 6459 |
|
|
change the definition to something the rest of the link can
|
| 6460 |
|
|
understand. */
|
| 6461 |
|
|
|
| 6462 |
|
|
static bfd_boolean
|
| 6463 |
|
|
ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
|
| 6464 |
|
|
struct elf_link_hash_entry *h)
|
| 6465 |
|
|
{
|
| 6466 |
|
|
struct ppc_link_hash_table *htab;
|
| 6467 |
|
|
asection *s;
|
| 6468 |
|
|
|
| 6469 |
|
|
htab = ppc_hash_table (info);
|
| 6470 |
|
|
if (htab == NULL)
|
| 6471 |
|
|
return FALSE;
|
| 6472 |
|
|
|
| 6473 |
|
|
/* Deal with function syms. */
|
| 6474 |
|
|
if (h->type == STT_FUNC
|
| 6475 |
|
|
|| h->type == STT_GNU_IFUNC
|
| 6476 |
|
|
|| h->needs_plt)
|
| 6477 |
|
|
{
|
| 6478 |
|
|
/* Clear procedure linkage table information for any symbol that
|
| 6479 |
|
|
won't need a .plt entry. */
|
| 6480 |
|
|
struct plt_entry *ent;
|
| 6481 |
|
|
for (ent = h->plt.plist; ent != NULL; ent = ent->next)
|
| 6482 |
|
|
if (ent->plt.refcount > 0)
|
| 6483 |
|
|
break;
|
| 6484 |
|
|
if (ent == NULL
|
| 6485 |
|
|
|| (h->type != STT_GNU_IFUNC
|
| 6486 |
|
|
&& (SYMBOL_CALLS_LOCAL (info, h)
|
| 6487 |
|
|
|| (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
|
| 6488 |
|
|
&& h->root.type == bfd_link_hash_undefweak))))
|
| 6489 |
|
|
{
|
| 6490 |
|
|
h->plt.plist = NULL;
|
| 6491 |
|
|
h->needs_plt = 0;
|
| 6492 |
|
|
}
|
| 6493 |
|
|
}
|
| 6494 |
|
|
else
|
| 6495 |
|
|
h->plt.plist = NULL;
|
| 6496 |
|
|
|
| 6497 |
|
|
/* If this is a weak symbol, and there is a real definition, the
|
| 6498 |
|
|
processor independent code will have arranged for us to see the
|
| 6499 |
|
|
real definition first, and we can just use the same value. */
|
| 6500 |
|
|
if (h->u.weakdef != NULL)
|
| 6501 |
|
|
{
|
| 6502 |
|
|
BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
|
| 6503 |
|
|
|| h->u.weakdef->root.type == bfd_link_hash_defweak);
|
| 6504 |
|
|
h->root.u.def.section = h->u.weakdef->root.u.def.section;
|
| 6505 |
|
|
h->root.u.def.value = h->u.weakdef->root.u.def.value;
|
| 6506 |
|
|
if (ELIMINATE_COPY_RELOCS)
|
| 6507 |
|
|
h->non_got_ref = h->u.weakdef->non_got_ref;
|
| 6508 |
|
|
return TRUE;
|
| 6509 |
|
|
}
|
| 6510 |
|
|
|
| 6511 |
|
|
/* If we are creating a shared library, we must presume that the
|
| 6512 |
|
|
only references to the symbol are via the global offset table.
|
| 6513 |
|
|
For such cases we need not do anything here; the relocations will
|
| 6514 |
|
|
be handled correctly by relocate_section. */
|
| 6515 |
|
|
if (info->shared)
|
| 6516 |
|
|
return TRUE;
|
| 6517 |
|
|
|
| 6518 |
|
|
/* If there are no references to this symbol that do not use the
|
| 6519 |
|
|
GOT, we don't need to generate a copy reloc. */
|
| 6520 |
|
|
if (!h->non_got_ref)
|
| 6521 |
|
|
return TRUE;
|
| 6522 |
|
|
|
| 6523 |
|
|
/* Don't generate a copy reloc for symbols defined in the executable. */
|
| 6524 |
|
|
if (!h->def_dynamic || !h->ref_regular || h->def_regular)
|
| 6525 |
|
|
return TRUE;
|
| 6526 |
|
|
|
| 6527 |
|
|
if (ELIMINATE_COPY_RELOCS)
|
| 6528 |
|
|
{
|
| 6529 |
|
|
struct ppc_link_hash_entry * eh;
|
| 6530 |
|
|
struct elf_dyn_relocs *p;
|
| 6531 |
|
|
|
| 6532 |
|
|
eh = (struct ppc_link_hash_entry *) h;
|
| 6533 |
|
|
for (p = eh->dyn_relocs; p != NULL; p = p->next)
|
| 6534 |
|
|
{
|
| 6535 |
|
|
s = p->sec->output_section;
|
| 6536 |
|
|
if (s != NULL && (s->flags & SEC_READONLY) != 0)
|
| 6537 |
|
|
break;
|
| 6538 |
|
|
}
|
| 6539 |
|
|
|
| 6540 |
|
|
/* If we didn't find any dynamic relocs in read-only sections, then
|
| 6541 |
|
|
we'll be keeping the dynamic relocs and avoiding the copy reloc. */
|
| 6542 |
|
|
if (p == NULL)
|
| 6543 |
|
|
{
|
| 6544 |
|
|
h->non_got_ref = 0;
|
| 6545 |
|
|
return TRUE;
|
| 6546 |
|
|
}
|
| 6547 |
|
|
}
|
| 6548 |
|
|
|
| 6549 |
|
|
if (h->plt.plist != NULL)
|
| 6550 |
|
|
{
|
| 6551 |
|
|
/* We should never get here, but unfortunately there are versions
|
| 6552 |
|
|
of gcc out there that improperly (for this ABI) put initialized
|
| 6553 |
|
|
function pointers, vtable refs and suchlike in read-only
|
| 6554 |
|
|
sections. Allow them to proceed, but warn that this might
|
| 6555 |
|
|
break at runtime. */
|
| 6556 |
|
|
info->callbacks->einfo
|
| 6557 |
161 |
khays |
(_("%P: copy reloc against `%s' requires lazy plt linking; "
|
| 6558 |
14 |
khays |
"avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
|
| 6559 |
|
|
h->root.root.string);
|
| 6560 |
|
|
}
|
| 6561 |
|
|
|
| 6562 |
|
|
/* This is a reference to a symbol defined by a dynamic object which
|
| 6563 |
|
|
is not a function. */
|
| 6564 |
|
|
|
| 6565 |
|
|
if (h->size == 0)
|
| 6566 |
|
|
{
|
| 6567 |
161 |
khays |
info->callbacks->einfo (_("%P: dynamic variable `%s' is zero size\n"),
|
| 6568 |
14 |
khays |
h->root.root.string);
|
| 6569 |
|
|
return TRUE;
|
| 6570 |
|
|
}
|
| 6571 |
|
|
|
| 6572 |
|
|
/* We must allocate the symbol in our .dynbss section, which will
|
| 6573 |
|
|
become part of the .bss section of the executable. There will be
|
| 6574 |
|
|
an entry for this symbol in the .dynsym section. The dynamic
|
| 6575 |
|
|
object will contain position independent code, so all references
|
| 6576 |
|
|
from the dynamic object to this symbol will go through the global
|
| 6577 |
|
|
offset table. The dynamic linker will use the .dynsym entry to
|
| 6578 |
|
|
determine the address it must put in the global offset table, so
|
| 6579 |
|
|
both the dynamic object and the regular object will refer to the
|
| 6580 |
|
|
same memory location for the variable. */
|
| 6581 |
|
|
|
| 6582 |
|
|
/* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
|
| 6583 |
|
|
to copy the initial value out of the dynamic object and into the
|
| 6584 |
|
|
runtime process image. We need to remember the offset into the
|
| 6585 |
|
|
.rela.bss section we are going to use. */
|
| 6586 |
|
|
if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
|
| 6587 |
|
|
{
|
| 6588 |
|
|
htab->relbss->size += sizeof (Elf64_External_Rela);
|
| 6589 |
|
|
h->needs_copy = 1;
|
| 6590 |
|
|
}
|
| 6591 |
|
|
|
| 6592 |
|
|
s = htab->dynbss;
|
| 6593 |
|
|
|
| 6594 |
|
|
return _bfd_elf_adjust_dynamic_copy (h, s);
|
| 6595 |
|
|
}
|
| 6596 |
|
|
|
| 6597 |
|
|
/* If given a function descriptor symbol, hide both the function code
|
| 6598 |
|
|
sym and the descriptor. */
|
| 6599 |
|
|
static void
|
| 6600 |
|
|
ppc64_elf_hide_symbol (struct bfd_link_info *info,
|
| 6601 |
|
|
struct elf_link_hash_entry *h,
|
| 6602 |
|
|
bfd_boolean force_local)
|
| 6603 |
|
|
{
|
| 6604 |
|
|
struct ppc_link_hash_entry *eh;
|
| 6605 |
|
|
_bfd_elf_link_hash_hide_symbol (info, h, force_local);
|
| 6606 |
|
|
|
| 6607 |
|
|
eh = (struct ppc_link_hash_entry *) h;
|
| 6608 |
|
|
if (eh->is_func_descriptor)
|
| 6609 |
|
|
{
|
| 6610 |
|
|
struct ppc_link_hash_entry *fh = eh->oh;
|
| 6611 |
|
|
|
| 6612 |
|
|
if (fh == NULL)
|
| 6613 |
|
|
{
|
| 6614 |
|
|
const char *p, *q;
|
| 6615 |
|
|
struct ppc_link_hash_table *htab;
|
| 6616 |
|
|
char save;
|
| 6617 |
|
|
|
| 6618 |
|
|
/* We aren't supposed to use alloca in BFD because on
|
| 6619 |
|
|
systems which do not have alloca the version in libiberty
|
| 6620 |
|
|
calls xmalloc, which might cause the program to crash
|
| 6621 |
|
|
when it runs out of memory. This function doesn't have a
|
| 6622 |
|
|
return status, so there's no way to gracefully return an
|
| 6623 |
|
|
error. So cheat. We know that string[-1] can be safely
|
| 6624 |
|
|
accessed; It's either a string in an ELF string table,
|
| 6625 |
|
|
or allocated in an objalloc structure. */
|
| 6626 |
|
|
|
| 6627 |
|
|
p = eh->elf.root.root.string - 1;
|
| 6628 |
|
|
save = *p;
|
| 6629 |
|
|
*(char *) p = '.';
|
| 6630 |
|
|
htab = ppc_hash_table (info);
|
| 6631 |
|
|
if (htab == NULL)
|
| 6632 |
|
|
return;
|
| 6633 |
|
|
|
| 6634 |
|
|
fh = (struct ppc_link_hash_entry *)
|
| 6635 |
|
|
elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
|
| 6636 |
|
|
*(char *) p = save;
|
| 6637 |
|
|
|
| 6638 |
|
|
/* Unfortunately, if it so happens that the string we were
|
| 6639 |
|
|
looking for was allocated immediately before this string,
|
| 6640 |
|
|
then we overwrote the string terminator. That's the only
|
| 6641 |
|
|
reason the lookup should fail. */
|
| 6642 |
|
|
if (fh == NULL)
|
| 6643 |
|
|
{
|
| 6644 |
|
|
q = eh->elf.root.root.string + strlen (eh->elf.root.root.string);
|
| 6645 |
|
|
while (q >= eh->elf.root.root.string && *q == *p)
|
| 6646 |
|
|
--q, --p;
|
| 6647 |
|
|
if (q < eh->elf.root.root.string && *p == '.')
|
| 6648 |
|
|
fh = (struct ppc_link_hash_entry *)
|
| 6649 |
|
|
elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE);
|
| 6650 |
|
|
}
|
| 6651 |
|
|
if (fh != NULL)
|
| 6652 |
|
|
{
|
| 6653 |
|
|
eh->oh = fh;
|
| 6654 |
|
|
fh->oh = eh;
|
| 6655 |
|
|
}
|
| 6656 |
|
|
}
|
| 6657 |
|
|
if (fh != NULL)
|
| 6658 |
|
|
_bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local);
|
| 6659 |
|
|
}
|
| 6660 |
|
|
}
|
| 6661 |
|
|
|
| 6662 |
|
|
static bfd_boolean
|
| 6663 |
|
|
get_sym_h (struct elf_link_hash_entry **hp,
|
| 6664 |
|
|
Elf_Internal_Sym **symp,
|
| 6665 |
|
|
asection **symsecp,
|
| 6666 |
|
|
unsigned char **tls_maskp,
|
| 6667 |
|
|
Elf_Internal_Sym **locsymsp,
|
| 6668 |
|
|
unsigned long r_symndx,
|
| 6669 |
|
|
bfd *ibfd)
|
| 6670 |
|
|
{
|
| 6671 |
|
|
Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
|
| 6672 |
|
|
|
| 6673 |
|
|
if (r_symndx >= symtab_hdr->sh_info)
|
| 6674 |
|
|
{
|
| 6675 |
|
|
struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
|
| 6676 |
|
|
struct elf_link_hash_entry *h;
|
| 6677 |
|
|
|
| 6678 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
| 6679 |
|
|
h = elf_follow_link (h);
|
| 6680 |
|
|
|
| 6681 |
|
|
if (hp != NULL)
|
| 6682 |
|
|
*hp = h;
|
| 6683 |
|
|
|
| 6684 |
|
|
if (symp != NULL)
|
| 6685 |
|
|
*symp = NULL;
|
| 6686 |
|
|
|
| 6687 |
|
|
if (symsecp != NULL)
|
| 6688 |
|
|
{
|
| 6689 |
|
|
asection *symsec = NULL;
|
| 6690 |
|
|
if (h->root.type == bfd_link_hash_defined
|
| 6691 |
|
|
|| h->root.type == bfd_link_hash_defweak)
|
| 6692 |
|
|
symsec = h->root.u.def.section;
|
| 6693 |
|
|
*symsecp = symsec;
|
| 6694 |
|
|
}
|
| 6695 |
|
|
|
| 6696 |
|
|
if (tls_maskp != NULL)
|
| 6697 |
|
|
{
|
| 6698 |
|
|
struct ppc_link_hash_entry *eh;
|
| 6699 |
|
|
|
| 6700 |
|
|
eh = (struct ppc_link_hash_entry *) h;
|
| 6701 |
|
|
*tls_maskp = &eh->tls_mask;
|
| 6702 |
|
|
}
|
| 6703 |
|
|
}
|
| 6704 |
|
|
else
|
| 6705 |
|
|
{
|
| 6706 |
|
|
Elf_Internal_Sym *sym;
|
| 6707 |
|
|
Elf_Internal_Sym *locsyms = *locsymsp;
|
| 6708 |
|
|
|
| 6709 |
|
|
if (locsyms == NULL)
|
| 6710 |
|
|
{
|
| 6711 |
|
|
locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
|
| 6712 |
|
|
if (locsyms == NULL)
|
| 6713 |
|
|
locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
|
| 6714 |
|
|
symtab_hdr->sh_info,
|
| 6715 |
|
|
0, NULL, NULL, NULL);
|
| 6716 |
|
|
if (locsyms == NULL)
|
| 6717 |
|
|
return FALSE;
|
| 6718 |
|
|
*locsymsp = locsyms;
|
| 6719 |
|
|
}
|
| 6720 |
|
|
sym = locsyms + r_symndx;
|
| 6721 |
|
|
|
| 6722 |
|
|
if (hp != NULL)
|
| 6723 |
|
|
*hp = NULL;
|
| 6724 |
|
|
|
| 6725 |
|
|
if (symp != NULL)
|
| 6726 |
|
|
*symp = sym;
|
| 6727 |
|
|
|
| 6728 |
|
|
if (symsecp != NULL)
|
| 6729 |
|
|
*symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx);
|
| 6730 |
|
|
|
| 6731 |
|
|
if (tls_maskp != NULL)
|
| 6732 |
|
|
{
|
| 6733 |
|
|
struct got_entry **lgot_ents;
|
| 6734 |
|
|
unsigned char *tls_mask;
|
| 6735 |
|
|
|
| 6736 |
|
|
tls_mask = NULL;
|
| 6737 |
|
|
lgot_ents = elf_local_got_ents (ibfd);
|
| 6738 |
|
|
if (lgot_ents != NULL)
|
| 6739 |
|
|
{
|
| 6740 |
|
|
struct plt_entry **local_plt = (struct plt_entry **)
|
| 6741 |
|
|
(lgot_ents + symtab_hdr->sh_info);
|
| 6742 |
|
|
unsigned char *lgot_masks = (unsigned char *)
|
| 6743 |
|
|
(local_plt + symtab_hdr->sh_info);
|
| 6744 |
|
|
tls_mask = &lgot_masks[r_symndx];
|
| 6745 |
|
|
}
|
| 6746 |
|
|
*tls_maskp = tls_mask;
|
| 6747 |
|
|
}
|
| 6748 |
|
|
}
|
| 6749 |
|
|
return TRUE;
|
| 6750 |
|
|
}
|
| 6751 |
|
|
|
| 6752 |
|
|
/* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
|
| 6753 |
|
|
error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
|
| 6754 |
|
|
type suitable for optimization, and 1 otherwise. */
|
| 6755 |
|
|
|
| 6756 |
|
|
static int
|
| 6757 |
|
|
get_tls_mask (unsigned char **tls_maskp,
|
| 6758 |
|
|
unsigned long *toc_symndx,
|
| 6759 |
|
|
bfd_vma *toc_addend,
|
| 6760 |
|
|
Elf_Internal_Sym **locsymsp,
|
| 6761 |
|
|
const Elf_Internal_Rela *rel,
|
| 6762 |
|
|
bfd *ibfd)
|
| 6763 |
|
|
{
|
| 6764 |
|
|
unsigned long r_symndx;
|
| 6765 |
|
|
int next_r;
|
| 6766 |
|
|
struct elf_link_hash_entry *h;
|
| 6767 |
|
|
Elf_Internal_Sym *sym;
|
| 6768 |
|
|
asection *sec;
|
| 6769 |
|
|
bfd_vma off;
|
| 6770 |
|
|
|
| 6771 |
|
|
r_symndx = ELF64_R_SYM (rel->r_info);
|
| 6772 |
|
|
if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
|
| 6773 |
|
|
return 0;
|
| 6774 |
|
|
|
| 6775 |
|
|
if ((*tls_maskp != NULL && **tls_maskp != 0)
|
| 6776 |
|
|
|| sec == NULL
|
| 6777 |
|
|
|| ppc64_elf_section_data (sec) == NULL
|
| 6778 |
|
|
|| ppc64_elf_section_data (sec)->sec_type != sec_toc)
|
| 6779 |
|
|
return 1;
|
| 6780 |
|
|
|
| 6781 |
|
|
/* Look inside a TOC section too. */
|
| 6782 |
|
|
if (h != NULL)
|
| 6783 |
|
|
{
|
| 6784 |
|
|
BFD_ASSERT (h->root.type == bfd_link_hash_defined);
|
| 6785 |
|
|
off = h->root.u.def.value;
|
| 6786 |
|
|
}
|
| 6787 |
|
|
else
|
| 6788 |
|
|
off = sym->st_value;
|
| 6789 |
|
|
off += rel->r_addend;
|
| 6790 |
|
|
BFD_ASSERT (off % 8 == 0);
|
| 6791 |
|
|
r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8];
|
| 6792 |
|
|
next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1];
|
| 6793 |
|
|
if (toc_symndx != NULL)
|
| 6794 |
|
|
*toc_symndx = r_symndx;
|
| 6795 |
|
|
if (toc_addend != NULL)
|
| 6796 |
|
|
*toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8];
|
| 6797 |
|
|
if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd))
|
| 6798 |
|
|
return 0;
|
| 6799 |
|
|
if ((h == NULL || is_static_defined (h))
|
| 6800 |
|
|
&& (next_r == -1 || next_r == -2))
|
| 6801 |
|
|
return 1 - next_r;
|
| 6802 |
|
|
return 1;
|
| 6803 |
|
|
}
|
| 6804 |
|
|
|
| 6805 |
163 |
khays |
/* Find (or create) an entry in the tocsave hash table. */
|
| 6806 |
|
|
|
| 6807 |
|
|
static struct tocsave_entry *
|
| 6808 |
|
|
tocsave_find (struct ppc_link_hash_table *htab,
|
| 6809 |
|
|
enum insert_option insert,
|
| 6810 |
|
|
Elf_Internal_Sym **local_syms,
|
| 6811 |
|
|
const Elf_Internal_Rela *irela,
|
| 6812 |
|
|
bfd *ibfd)
|
| 6813 |
|
|
{
|
| 6814 |
|
|
unsigned long r_indx;
|
| 6815 |
|
|
struct elf_link_hash_entry *h;
|
| 6816 |
|
|
Elf_Internal_Sym *sym;
|
| 6817 |
|
|
struct tocsave_entry ent, *p;
|
| 6818 |
|
|
hashval_t hash;
|
| 6819 |
|
|
struct tocsave_entry **slot;
|
| 6820 |
|
|
|
| 6821 |
|
|
r_indx = ELF64_R_SYM (irela->r_info);
|
| 6822 |
|
|
if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd))
|
| 6823 |
|
|
return NULL;
|
| 6824 |
|
|
if (ent.sec == NULL || ent.sec->output_section == NULL)
|
| 6825 |
|
|
{
|
| 6826 |
|
|
(*_bfd_error_handler)
|
| 6827 |
|
|
(_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"));
|
| 6828 |
|
|
return NULL;
|
| 6829 |
|
|
}
|
| 6830 |
|
|
|
| 6831 |
|
|
if (h != NULL)
|
| 6832 |
|
|
ent.offset = h->root.u.def.value;
|
| 6833 |
|
|
else
|
| 6834 |
|
|
ent.offset = sym->st_value;
|
| 6835 |
|
|
ent.offset += irela->r_addend;
|
| 6836 |
|
|
|
| 6837 |
|
|
hash = tocsave_htab_hash (&ent);
|
| 6838 |
|
|
slot = ((struct tocsave_entry **)
|
| 6839 |
|
|
htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert));
|
| 6840 |
|
|
if (slot == NULL)
|
| 6841 |
|
|
return NULL;
|
| 6842 |
|
|
|
| 6843 |
|
|
if (*slot == NULL)
|
| 6844 |
|
|
{
|
| 6845 |
|
|
p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p));
|
| 6846 |
|
|
if (p == NULL)
|
| 6847 |
|
|
return NULL;
|
| 6848 |
|
|
*p = ent;
|
| 6849 |
|
|
*slot = p;
|
| 6850 |
|
|
}
|
| 6851 |
|
|
return *slot;
|
| 6852 |
|
|
}
|
| 6853 |
|
|
|
| 6854 |
14 |
khays |
/* Adjust all global syms defined in opd sections. In gcc generated
|
| 6855 |
|
|
code for the old ABI, these will already have been done. */
|
| 6856 |
|
|
|
| 6857 |
|
|
static bfd_boolean
|
| 6858 |
|
|
adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
|
| 6859 |
|
|
{
|
| 6860 |
|
|
struct ppc_link_hash_entry *eh;
|
| 6861 |
|
|
asection *sym_sec;
|
| 6862 |
|
|
struct _opd_sec_data *opd;
|
| 6863 |
|
|
|
| 6864 |
|
|
if (h->root.type == bfd_link_hash_indirect)
|
| 6865 |
|
|
return TRUE;
|
| 6866 |
|
|
|
| 6867 |
|
|
if (h->root.type != bfd_link_hash_defined
|
| 6868 |
|
|
&& h->root.type != bfd_link_hash_defweak)
|
| 6869 |
|
|
return TRUE;
|
| 6870 |
|
|
|
| 6871 |
|
|
eh = (struct ppc_link_hash_entry *) h;
|
| 6872 |
|
|
if (eh->adjust_done)
|
| 6873 |
|
|
return TRUE;
|
| 6874 |
|
|
|
| 6875 |
|
|
sym_sec = eh->elf.root.u.def.section;
|
| 6876 |
|
|
opd = get_opd_info (sym_sec);
|
| 6877 |
|
|
if (opd != NULL && opd->adjust != NULL)
|
| 6878 |
|
|
{
|
| 6879 |
|
|
long adjust = opd->adjust[eh->elf.root.u.def.value / 8];
|
| 6880 |
|
|
if (adjust == -1)
|
| 6881 |
|
|
{
|
| 6882 |
|
|
/* This entry has been deleted. */
|
| 6883 |
|
|
asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
|
| 6884 |
|
|
if (dsec == NULL)
|
| 6885 |
|
|
{
|
| 6886 |
|
|
for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
|
| 6887 |
|
|
if (elf_discarded_section (dsec))
|
| 6888 |
|
|
{
|
| 6889 |
|
|
ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
|
| 6890 |
|
|
break;
|
| 6891 |
|
|
}
|
| 6892 |
|
|
}
|
| 6893 |
|
|
eh->elf.root.u.def.value = 0;
|
| 6894 |
|
|
eh->elf.root.u.def.section = dsec;
|
| 6895 |
|
|
}
|
| 6896 |
|
|
else
|
| 6897 |
|
|
eh->elf.root.u.def.value += adjust;
|
| 6898 |
|
|
eh->adjust_done = 1;
|
| 6899 |
|
|
}
|
| 6900 |
|
|
return TRUE;
|
| 6901 |
|
|
}
|
| 6902 |
|
|
|
| 6903 |
|
|
/* Handles decrementing dynamic reloc counts for the reloc specified by
|
| 6904 |
|
|
R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
|
| 6905 |
|
|
have already been determined. */
|
| 6906 |
|
|
|
| 6907 |
|
|
static bfd_boolean
|
| 6908 |
|
|
dec_dynrel_count (bfd_vma r_info,
|
| 6909 |
|
|
asection *sec,
|
| 6910 |
|
|
struct bfd_link_info *info,
|
| 6911 |
|
|
Elf_Internal_Sym **local_syms,
|
| 6912 |
|
|
struct elf_link_hash_entry *h,
|
| 6913 |
|
|
asection *sym_sec)
|
| 6914 |
|
|
{
|
| 6915 |
|
|
enum elf_ppc64_reloc_type r_type;
|
| 6916 |
|
|
struct elf_dyn_relocs *p;
|
| 6917 |
|
|
struct elf_dyn_relocs **pp;
|
| 6918 |
|
|
|
| 6919 |
|
|
/* Can this reloc be dynamic? This switch, and later tests here
|
| 6920 |
|
|
should be kept in sync with the code in check_relocs. */
|
| 6921 |
|
|
r_type = ELF64_R_TYPE (r_info);
|
| 6922 |
|
|
switch (r_type)
|
| 6923 |
|
|
{
|
| 6924 |
|
|
default:
|
| 6925 |
|
|
return TRUE;
|
| 6926 |
|
|
|
| 6927 |
|
|
case R_PPC64_TPREL16:
|
| 6928 |
|
|
case R_PPC64_TPREL16_LO:
|
| 6929 |
|
|
case R_PPC64_TPREL16_HI:
|
| 6930 |
|
|
case R_PPC64_TPREL16_HA:
|
| 6931 |
|
|
case R_PPC64_TPREL16_DS:
|
| 6932 |
|
|
case R_PPC64_TPREL16_LO_DS:
|
| 6933 |
|
|
case R_PPC64_TPREL16_HIGHER:
|
| 6934 |
|
|
case R_PPC64_TPREL16_HIGHERA:
|
| 6935 |
|
|
case R_PPC64_TPREL16_HIGHEST:
|
| 6936 |
|
|
case R_PPC64_TPREL16_HIGHESTA:
|
| 6937 |
|
|
if (!info->shared)
|
| 6938 |
|
|
return TRUE;
|
| 6939 |
|
|
|
| 6940 |
|
|
case R_PPC64_TPREL64:
|
| 6941 |
|
|
case R_PPC64_DTPMOD64:
|
| 6942 |
|
|
case R_PPC64_DTPREL64:
|
| 6943 |
|
|
case R_PPC64_ADDR64:
|
| 6944 |
|
|
case R_PPC64_REL30:
|
| 6945 |
|
|
case R_PPC64_REL32:
|
| 6946 |
|
|
case R_PPC64_REL64:
|
| 6947 |
|
|
case R_PPC64_ADDR14:
|
| 6948 |
|
|
case R_PPC64_ADDR14_BRNTAKEN:
|
| 6949 |
|
|
case R_PPC64_ADDR14_BRTAKEN:
|
| 6950 |
|
|
case R_PPC64_ADDR16:
|
| 6951 |
|
|
case R_PPC64_ADDR16_DS:
|
| 6952 |
|
|
case R_PPC64_ADDR16_HA:
|
| 6953 |
|
|
case R_PPC64_ADDR16_HI:
|
| 6954 |
|
|
case R_PPC64_ADDR16_HIGHER:
|
| 6955 |
|
|
case R_PPC64_ADDR16_HIGHERA:
|
| 6956 |
|
|
case R_PPC64_ADDR16_HIGHEST:
|
| 6957 |
|
|
case R_PPC64_ADDR16_HIGHESTA:
|
| 6958 |
|
|
case R_PPC64_ADDR16_LO:
|
| 6959 |
|
|
case R_PPC64_ADDR16_LO_DS:
|
| 6960 |
|
|
case R_PPC64_ADDR24:
|
| 6961 |
|
|
case R_PPC64_ADDR32:
|
| 6962 |
|
|
case R_PPC64_UADDR16:
|
| 6963 |
|
|
case R_PPC64_UADDR32:
|
| 6964 |
|
|
case R_PPC64_UADDR64:
|
| 6965 |
|
|
case R_PPC64_TOC:
|
| 6966 |
|
|
break;
|
| 6967 |
|
|
}
|
| 6968 |
|
|
|
| 6969 |
|
|
if (local_syms != NULL)
|
| 6970 |
|
|
{
|
| 6971 |
|
|
unsigned long r_symndx;
|
| 6972 |
|
|
Elf_Internal_Sym *sym;
|
| 6973 |
|
|
bfd *ibfd = sec->owner;
|
| 6974 |
|
|
|
| 6975 |
|
|
r_symndx = ELF64_R_SYM (r_info);
|
| 6976 |
|
|
if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd))
|
| 6977 |
|
|
return FALSE;
|
| 6978 |
|
|
}
|
| 6979 |
|
|
|
| 6980 |
|
|
if ((info->shared
|
| 6981 |
|
|
&& (must_be_dyn_reloc (info, r_type)
|
| 6982 |
|
|
|| (h != NULL
|
| 6983 |
|
|
&& (!info->symbolic
|
| 6984 |
|
|
|| h->root.type == bfd_link_hash_defweak
|
| 6985 |
|
|
|| !h->def_regular))))
|
| 6986 |
|
|
|| (ELIMINATE_COPY_RELOCS
|
| 6987 |
|
|
&& !info->shared
|
| 6988 |
|
|
&& h != NULL
|
| 6989 |
|
|
&& (h->root.type == bfd_link_hash_defweak
|
| 6990 |
|
|
|| !h->def_regular)))
|
| 6991 |
|
|
;
|
| 6992 |
|
|
else
|
| 6993 |
|
|
return TRUE;
|
| 6994 |
|
|
|
| 6995 |
|
|
if (h != NULL)
|
| 6996 |
|
|
pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
|
| 6997 |
|
|
else
|
| 6998 |
|
|
{
|
| 6999 |
|
|
if (sym_sec != NULL)
|
| 7000 |
|
|
{
|
| 7001 |
|
|
void *vpp = &elf_section_data (sym_sec)->local_dynrel;
|
| 7002 |
|
|
pp = (struct elf_dyn_relocs **) vpp;
|
| 7003 |
|
|
}
|
| 7004 |
|
|
else
|
| 7005 |
|
|
{
|
| 7006 |
|
|
void *vpp = &elf_section_data (sec)->local_dynrel;
|
| 7007 |
|
|
pp = (struct elf_dyn_relocs **) vpp;
|
| 7008 |
|
|
}
|
| 7009 |
|
|
|
| 7010 |
|
|
/* elf_gc_sweep may have already removed all dyn relocs associated
|
| 7011 |
|
|
with local syms for a given section. Don't report a dynreloc
|
| 7012 |
|
|
miscount. */
|
| 7013 |
|
|
if (*pp == NULL)
|
| 7014 |
|
|
return TRUE;
|
| 7015 |
|
|
}
|
| 7016 |
|
|
|
| 7017 |
|
|
while ((p = *pp) != NULL)
|
| 7018 |
|
|
{
|
| 7019 |
|
|
if (p->sec == sec)
|
| 7020 |
|
|
{
|
| 7021 |
|
|
if (!must_be_dyn_reloc (info, r_type))
|
| 7022 |
|
|
p->pc_count -= 1;
|
| 7023 |
|
|
p->count -= 1;
|
| 7024 |
|
|
if (p->count == 0)
|
| 7025 |
|
|
*pp = p->next;
|
| 7026 |
|
|
return TRUE;
|
| 7027 |
|
|
}
|
| 7028 |
|
|
pp = &p->next;
|
| 7029 |
|
|
}
|
| 7030 |
|
|
|
| 7031 |
161 |
khays |
info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"),
|
| 7032 |
14 |
khays |
sec->owner, sec);
|
| 7033 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 7034 |
|
|
return FALSE;
|
| 7035 |
|
|
}
|
| 7036 |
|
|
|
| 7037 |
|
|
/* Remove unused Official Procedure Descriptor entries. Currently we
|
| 7038 |
|
|
only remove those associated with functions in discarded link-once
|
| 7039 |
|
|
sections, or weakly defined functions that have been overridden. It
|
| 7040 |
|
|
would be possible to remove many more entries for statically linked
|
| 7041 |
|
|
applications. */
|
| 7042 |
|
|
|
| 7043 |
|
|
bfd_boolean
|
| 7044 |
|
|
ppc64_elf_edit_opd (struct bfd_link_info *info, bfd_boolean non_overlapping)
|
| 7045 |
|
|
{
|
| 7046 |
|
|
bfd *ibfd;
|
| 7047 |
|
|
bfd_boolean some_edited = FALSE;
|
| 7048 |
|
|
asection *need_pad = NULL;
|
| 7049 |
|
|
|
| 7050 |
|
|
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
|
| 7051 |
|
|
{
|
| 7052 |
|
|
asection *sec;
|
| 7053 |
|
|
Elf_Internal_Rela *relstart, *rel, *relend;
|
| 7054 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 7055 |
|
|
Elf_Internal_Sym *local_syms;
|
| 7056 |
|
|
bfd_vma offset;
|
| 7057 |
|
|
struct _opd_sec_data *opd;
|
| 7058 |
|
|
bfd_boolean need_edit, add_aux_fields;
|
| 7059 |
|
|
bfd_size_type cnt_16b = 0;
|
| 7060 |
|
|
|
| 7061 |
|
|
if (!is_ppc64_elf (ibfd))
|
| 7062 |
|
|
continue;
|
| 7063 |
|
|
|
| 7064 |
|
|
sec = bfd_get_section_by_name (ibfd, ".opd");
|
| 7065 |
|
|
if (sec == NULL || sec->size == 0)
|
| 7066 |
|
|
continue;
|
| 7067 |
|
|
|
| 7068 |
|
|
if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
|
| 7069 |
|
|
continue;
|
| 7070 |
|
|
|
| 7071 |
|
|
if (sec->output_section == bfd_abs_section_ptr)
|
| 7072 |
|
|
continue;
|
| 7073 |
|
|
|
| 7074 |
|
|
/* Look through the section relocs. */
|
| 7075 |
|
|
if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
|
| 7076 |
|
|
continue;
|
| 7077 |
|
|
|
| 7078 |
|
|
local_syms = NULL;
|
| 7079 |
|
|
symtab_hdr = &elf_symtab_hdr (ibfd);
|
| 7080 |
|
|
|
| 7081 |
|
|
/* Read the relocations. */
|
| 7082 |
|
|
relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
|
| 7083 |
|
|
info->keep_memory);
|
| 7084 |
|
|
if (relstart == NULL)
|
| 7085 |
|
|
return FALSE;
|
| 7086 |
|
|
|
| 7087 |
|
|
/* First run through the relocs to check they are sane, and to
|
| 7088 |
|
|
determine whether we need to edit this opd section. */
|
| 7089 |
|
|
need_edit = FALSE;
|
| 7090 |
|
|
need_pad = sec;
|
| 7091 |
|
|
offset = 0;
|
| 7092 |
|
|
relend = relstart + sec->reloc_count;
|
| 7093 |
|
|
for (rel = relstart; rel < relend; )
|
| 7094 |
|
|
{
|
| 7095 |
|
|
enum elf_ppc64_reloc_type r_type;
|
| 7096 |
|
|
unsigned long r_symndx;
|
| 7097 |
|
|
asection *sym_sec;
|
| 7098 |
|
|
struct elf_link_hash_entry *h;
|
| 7099 |
|
|
Elf_Internal_Sym *sym;
|
| 7100 |
|
|
|
| 7101 |
|
|
/* .opd contains a regular array of 16 or 24 byte entries. We're
|
| 7102 |
|
|
only interested in the reloc pointing to a function entry
|
| 7103 |
|
|
point. */
|
| 7104 |
|
|
if (rel->r_offset != offset
|
| 7105 |
|
|
|| rel + 1 >= relend
|
| 7106 |
|
|
|| (rel + 1)->r_offset != offset + 8)
|
| 7107 |
|
|
{
|
| 7108 |
|
|
/* If someone messes with .opd alignment then after a
|
| 7109 |
|
|
"ld -r" we might have padding in the middle of .opd.
|
| 7110 |
|
|
Also, there's nothing to prevent someone putting
|
| 7111 |
|
|
something silly in .opd with the assembler. No .opd
|
| 7112 |
|
|
optimization for them! */
|
| 7113 |
|
|
broken_opd:
|
| 7114 |
|
|
(*_bfd_error_handler)
|
| 7115 |
|
|
(_("%B: .opd is not a regular array of opd entries"), ibfd);
|
| 7116 |
|
|
need_edit = FALSE;
|
| 7117 |
|
|
break;
|
| 7118 |
|
|
}
|
| 7119 |
|
|
|
| 7120 |
|
|
if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64
|
| 7121 |
|
|
|| (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC)
|
| 7122 |
|
|
{
|
| 7123 |
|
|
(*_bfd_error_handler)
|
| 7124 |
|
|
(_("%B: unexpected reloc type %u in .opd section"),
|
| 7125 |
|
|
ibfd, r_type);
|
| 7126 |
|
|
need_edit = FALSE;
|
| 7127 |
|
|
break;
|
| 7128 |
|
|
}
|
| 7129 |
|
|
|
| 7130 |
|
|
r_symndx = ELF64_R_SYM (rel->r_info);
|
| 7131 |
|
|
if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
|
| 7132 |
|
|
r_symndx, ibfd))
|
| 7133 |
|
|
goto error_ret;
|
| 7134 |
|
|
|
| 7135 |
|
|
if (sym_sec == NULL || sym_sec->owner == NULL)
|
| 7136 |
|
|
{
|
| 7137 |
|
|
const char *sym_name;
|
| 7138 |
|
|
if (h != NULL)
|
| 7139 |
|
|
sym_name = h->root.root.string;
|
| 7140 |
|
|
else
|
| 7141 |
|
|
sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym,
|
| 7142 |
|
|
sym_sec);
|
| 7143 |
|
|
|
| 7144 |
|
|
(*_bfd_error_handler)
|
| 7145 |
|
|
(_("%B: undefined sym `%s' in .opd section"),
|
| 7146 |
|
|
ibfd, sym_name);
|
| 7147 |
|
|
need_edit = FALSE;
|
| 7148 |
|
|
break;
|
| 7149 |
|
|
}
|
| 7150 |
|
|
|
| 7151 |
|
|
/* opd entries are always for functions defined in the
|
| 7152 |
|
|
current input bfd. If the symbol isn't defined in the
|
| 7153 |
|
|
input bfd, then we won't be using the function in this
|
| 7154 |
|
|
bfd; It must be defined in a linkonce section in another
|
| 7155 |
|
|
bfd, or is weak. It's also possible that we are
|
| 7156 |
|
|
discarding the function due to a linker script /DISCARD/,
|
| 7157 |
|
|
which we test for via the output_section. */
|
| 7158 |
|
|
if (sym_sec->owner != ibfd
|
| 7159 |
|
|
|| sym_sec->output_section == bfd_abs_section_ptr)
|
| 7160 |
|
|
need_edit = TRUE;
|
| 7161 |
|
|
|
| 7162 |
|
|
rel += 2;
|
| 7163 |
|
|
if (rel == relend
|
| 7164 |
|
|
|| (rel + 1 == relend && rel->r_offset == offset + 16))
|
| 7165 |
|
|
{
|
| 7166 |
|
|
if (sec->size == offset + 24)
|
| 7167 |
|
|
{
|
| 7168 |
|
|
need_pad = NULL;
|
| 7169 |
|
|
break;
|
| 7170 |
|
|
}
|
| 7171 |
|
|
if (rel == relend && sec->size == offset + 16)
|
| 7172 |
|
|
{
|
| 7173 |
|
|
cnt_16b++;
|
| 7174 |
|
|
break;
|
| 7175 |
|
|
}
|
| 7176 |
|
|
goto broken_opd;
|
| 7177 |
|
|
}
|
| 7178 |
|
|
|
| 7179 |
|
|
if (rel->r_offset == offset + 24)
|
| 7180 |
|
|
offset += 24;
|
| 7181 |
|
|
else if (rel->r_offset != offset + 16)
|
| 7182 |
|
|
goto broken_opd;
|
| 7183 |
|
|
else if (rel + 1 < relend
|
| 7184 |
|
|
&& ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64
|
| 7185 |
|
|
&& ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC)
|
| 7186 |
|
|
{
|
| 7187 |
|
|
offset += 16;
|
| 7188 |
|
|
cnt_16b++;
|
| 7189 |
|
|
}
|
| 7190 |
|
|
else if (rel + 2 < relend
|
| 7191 |
|
|
&& ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64
|
| 7192 |
|
|
&& ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)
|
| 7193 |
|
|
{
|
| 7194 |
|
|
offset += 24;
|
| 7195 |
|
|
rel += 1;
|
| 7196 |
|
|
}
|
| 7197 |
|
|
else
|
| 7198 |
|
|
goto broken_opd;
|
| 7199 |
|
|
}
|
| 7200 |
|
|
|
| 7201 |
|
|
add_aux_fields = non_overlapping && cnt_16b > 0;
|
| 7202 |
|
|
|
| 7203 |
|
|
if (need_edit || add_aux_fields)
|
| 7204 |
|
|
{
|
| 7205 |
|
|
Elf_Internal_Rela *write_rel;
|
| 7206 |
|
|
Elf_Internal_Shdr *rel_hdr;
|
| 7207 |
|
|
bfd_byte *rptr, *wptr;
|
| 7208 |
|
|
bfd_byte *new_contents;
|
| 7209 |
|
|
bfd_boolean skip;
|
| 7210 |
|
|
long opd_ent_size;
|
| 7211 |
|
|
bfd_size_type amt;
|
| 7212 |
|
|
|
| 7213 |
|
|
new_contents = NULL;
|
| 7214 |
|
|
amt = sec->size * sizeof (long) / 8;
|
| 7215 |
|
|
opd = &ppc64_elf_section_data (sec)->u.opd;
|
| 7216 |
|
|
opd->adjust = bfd_zalloc (sec->owner, amt);
|
| 7217 |
|
|
if (opd->adjust == NULL)
|
| 7218 |
|
|
return FALSE;
|
| 7219 |
|
|
ppc64_elf_section_data (sec)->sec_type = sec_opd;
|
| 7220 |
|
|
|
| 7221 |
|
|
/* This seems a waste of time as input .opd sections are all
|
| 7222 |
|
|
zeros as generated by gcc, but I suppose there's no reason
|
| 7223 |
|
|
this will always be so. We might start putting something in
|
| 7224 |
|
|
the third word of .opd entries. */
|
| 7225 |
|
|
if ((sec->flags & SEC_IN_MEMORY) == 0)
|
| 7226 |
|
|
{
|
| 7227 |
|
|
bfd_byte *loc;
|
| 7228 |
|
|
if (!bfd_malloc_and_get_section (ibfd, sec, &loc))
|
| 7229 |
|
|
{
|
| 7230 |
|
|
if (loc != NULL)
|
| 7231 |
|
|
free (loc);
|
| 7232 |
|
|
error_ret:
|
| 7233 |
|
|
if (local_syms != NULL
|
| 7234 |
|
|
&& symtab_hdr->contents != (unsigned char *) local_syms)
|
| 7235 |
|
|
free (local_syms);
|
| 7236 |
|
|
if (elf_section_data (sec)->relocs != relstart)
|
| 7237 |
|
|
free (relstart);
|
| 7238 |
|
|
return FALSE;
|
| 7239 |
|
|
}
|
| 7240 |
|
|
sec->contents = loc;
|
| 7241 |
|
|
sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
|
| 7242 |
|
|
}
|
| 7243 |
|
|
|
| 7244 |
|
|
elf_section_data (sec)->relocs = relstart;
|
| 7245 |
|
|
|
| 7246 |
|
|
new_contents = sec->contents;
|
| 7247 |
|
|
if (add_aux_fields)
|
| 7248 |
|
|
{
|
| 7249 |
|
|
new_contents = bfd_malloc (sec->size + cnt_16b * 8);
|
| 7250 |
|
|
if (new_contents == NULL)
|
| 7251 |
|
|
return FALSE;
|
| 7252 |
|
|
need_pad = FALSE;
|
| 7253 |
|
|
}
|
| 7254 |
|
|
wptr = new_contents;
|
| 7255 |
|
|
rptr = sec->contents;
|
| 7256 |
|
|
|
| 7257 |
|
|
write_rel = relstart;
|
| 7258 |
|
|
skip = FALSE;
|
| 7259 |
|
|
offset = 0;
|
| 7260 |
|
|
opd_ent_size = 0;
|
| 7261 |
|
|
for (rel = relstart; rel < relend; rel++)
|
| 7262 |
|
|
{
|
| 7263 |
|
|
unsigned long r_symndx;
|
| 7264 |
|
|
asection *sym_sec;
|
| 7265 |
|
|
struct elf_link_hash_entry *h;
|
| 7266 |
|
|
Elf_Internal_Sym *sym;
|
| 7267 |
|
|
|
| 7268 |
|
|
r_symndx = ELF64_R_SYM (rel->r_info);
|
| 7269 |
|
|
if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
|
| 7270 |
|
|
r_symndx, ibfd))
|
| 7271 |
|
|
goto error_ret;
|
| 7272 |
|
|
|
| 7273 |
|
|
if (rel->r_offset == offset)
|
| 7274 |
|
|
{
|
| 7275 |
|
|
struct ppc_link_hash_entry *fdh = NULL;
|
| 7276 |
|
|
|
| 7277 |
|
|
/* See if the .opd entry is full 24 byte or
|
| 7278 |
|
|
16 byte (with fd_aux entry overlapped with next
|
| 7279 |
|
|
fd_func). */
|
| 7280 |
|
|
opd_ent_size = 24;
|
| 7281 |
|
|
if ((rel + 2 == relend && sec->size == offset + 16)
|
| 7282 |
|
|
|| (rel + 3 < relend
|
| 7283 |
|
|
&& rel[2].r_offset == offset + 16
|
| 7284 |
|
|
&& rel[3].r_offset == offset + 24
|
| 7285 |
|
|
&& ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64
|
| 7286 |
|
|
&& ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC))
|
| 7287 |
|
|
opd_ent_size = 16;
|
| 7288 |
|
|
|
| 7289 |
|
|
if (h != NULL
|
| 7290 |
|
|
&& h->root.root.string[0] == '.')
|
| 7291 |
|
|
{
|
| 7292 |
|
|
struct ppc_link_hash_table *htab;
|
| 7293 |
|
|
|
| 7294 |
|
|
htab = ppc_hash_table (info);
|
| 7295 |
|
|
if (htab != NULL)
|
| 7296 |
|
|
fdh = lookup_fdh ((struct ppc_link_hash_entry *) h,
|
| 7297 |
|
|
htab);
|
| 7298 |
|
|
if (fdh != NULL
|
| 7299 |
|
|
&& fdh->elf.root.type != bfd_link_hash_defined
|
| 7300 |
|
|
&& fdh->elf.root.type != bfd_link_hash_defweak)
|
| 7301 |
|
|
fdh = NULL;
|
| 7302 |
|
|
}
|
| 7303 |
|
|
|
| 7304 |
|
|
skip = (sym_sec->owner != ibfd
|
| 7305 |
|
|
|| sym_sec->output_section == bfd_abs_section_ptr);
|
| 7306 |
|
|
if (skip)
|
| 7307 |
|
|
{
|
| 7308 |
|
|
if (fdh != NULL && sym_sec->owner == ibfd)
|
| 7309 |
|
|
{
|
| 7310 |
|
|
/* Arrange for the function descriptor sym
|
| 7311 |
|
|
to be dropped. */
|
| 7312 |
|
|
fdh->elf.root.u.def.value = 0;
|
| 7313 |
|
|
fdh->elf.root.u.def.section = sym_sec;
|
| 7314 |
|
|
}
|
| 7315 |
|
|
opd->adjust[rel->r_offset / 8] = -1;
|
| 7316 |
|
|
}
|
| 7317 |
|
|
else
|
| 7318 |
|
|
{
|
| 7319 |
|
|
/* We'll be keeping this opd entry. */
|
| 7320 |
|
|
|
| 7321 |
|
|
if (fdh != NULL)
|
| 7322 |
|
|
{
|
| 7323 |
|
|
/* Redefine the function descriptor symbol to
|
| 7324 |
|
|
this location in the opd section. It is
|
| 7325 |
|
|
necessary to update the value here rather
|
| 7326 |
|
|
than using an array of adjustments as we do
|
| 7327 |
|
|
for local symbols, because various places
|
| 7328 |
|
|
in the generic ELF code use the value
|
| 7329 |
|
|
stored in u.def.value. */
|
| 7330 |
|
|
fdh->elf.root.u.def.value = wptr - new_contents;
|
| 7331 |
|
|
fdh->adjust_done = 1;
|
| 7332 |
|
|
}
|
| 7333 |
|
|
|
| 7334 |
|
|
/* Local syms are a bit tricky. We could
|
| 7335 |
|
|
tweak them as they can be cached, but
|
| 7336 |
|
|
we'd need to look through the local syms
|
| 7337 |
|
|
for the function descriptor sym which we
|
| 7338 |
|
|
don't have at the moment. So keep an
|
| 7339 |
|
|
array of adjustments. */
|
| 7340 |
|
|
opd->adjust[rel->r_offset / 8]
|
| 7341 |
|
|
= (wptr - new_contents) - (rptr - sec->contents);
|
| 7342 |
|
|
|
| 7343 |
|
|
if (wptr != rptr)
|
| 7344 |
|
|
memcpy (wptr, rptr, opd_ent_size);
|
| 7345 |
|
|
wptr += opd_ent_size;
|
| 7346 |
|
|
if (add_aux_fields && opd_ent_size == 16)
|
| 7347 |
|
|
{
|
| 7348 |
|
|
memset (wptr, '\0', 8);
|
| 7349 |
|
|
wptr += 8;
|
| 7350 |
|
|
}
|
| 7351 |
|
|
}
|
| 7352 |
|
|
rptr += opd_ent_size;
|
| 7353 |
|
|
offset += opd_ent_size;
|
| 7354 |
|
|
}
|
| 7355 |
|
|
|
| 7356 |
|
|
if (skip)
|
| 7357 |
|
|
{
|
| 7358 |
|
|
if (!NO_OPD_RELOCS
|
| 7359 |
|
|
&& !info->relocatable
|
| 7360 |
|
|
&& !dec_dynrel_count (rel->r_info, sec, info,
|
| 7361 |
|
|
NULL, h, sym_sec))
|
| 7362 |
|
|
goto error_ret;
|
| 7363 |
|
|
}
|
| 7364 |
|
|
else
|
| 7365 |
|
|
{
|
| 7366 |
|
|
/* We need to adjust any reloc offsets to point to the
|
| 7367 |
|
|
new opd entries. While we're at it, we may as well
|
| 7368 |
|
|
remove redundant relocs. */
|
| 7369 |
|
|
rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8];
|
| 7370 |
|
|
if (write_rel != rel)
|
| 7371 |
|
|
memcpy (write_rel, rel, sizeof (*rel));
|
| 7372 |
|
|
++write_rel;
|
| 7373 |
|
|
}
|
| 7374 |
|
|
}
|
| 7375 |
|
|
|
| 7376 |
|
|
sec->size = wptr - new_contents;
|
| 7377 |
|
|
sec->reloc_count = write_rel - relstart;
|
| 7378 |
|
|
if (add_aux_fields)
|
| 7379 |
|
|
{
|
| 7380 |
|
|
free (sec->contents);
|
| 7381 |
|
|
sec->contents = new_contents;
|
| 7382 |
|
|
}
|
| 7383 |
|
|
|
| 7384 |
|
|
/* Fudge the header size too, as this is used later in
|
| 7385 |
|
|
elf_bfd_final_link if we are emitting relocs. */
|
| 7386 |
|
|
rel_hdr = _bfd_elf_single_rel_hdr (sec);
|
| 7387 |
|
|
rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize;
|
| 7388 |
|
|
some_edited = TRUE;
|
| 7389 |
|
|
}
|
| 7390 |
|
|
else if (elf_section_data (sec)->relocs != relstart)
|
| 7391 |
|
|
free (relstart);
|
| 7392 |
|
|
|
| 7393 |
|
|
if (local_syms != NULL
|
| 7394 |
|
|
&& symtab_hdr->contents != (unsigned char *) local_syms)
|
| 7395 |
|
|
{
|
| 7396 |
|
|
if (!info->keep_memory)
|
| 7397 |
|
|
free (local_syms);
|
| 7398 |
|
|
else
|
| 7399 |
|
|
symtab_hdr->contents = (unsigned char *) local_syms;
|
| 7400 |
|
|
}
|
| 7401 |
|
|
}
|
| 7402 |
|
|
|
| 7403 |
|
|
if (some_edited)
|
| 7404 |
|
|
elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL);
|
| 7405 |
|
|
|
| 7406 |
|
|
/* If we are doing a final link and the last .opd entry is just 16 byte
|
| 7407 |
|
|
long, add a 8 byte padding after it. */
|
| 7408 |
|
|
if (need_pad != NULL && !info->relocatable)
|
| 7409 |
|
|
{
|
| 7410 |
|
|
bfd_byte *p;
|
| 7411 |
|
|
|
| 7412 |
|
|
if ((need_pad->flags & SEC_IN_MEMORY) == 0)
|
| 7413 |
|
|
{
|
| 7414 |
|
|
BFD_ASSERT (need_pad->size > 0);
|
| 7415 |
|
|
|
| 7416 |
|
|
p = bfd_malloc (need_pad->size + 8);
|
| 7417 |
|
|
if (p == NULL)
|
| 7418 |
|
|
return FALSE;
|
| 7419 |
|
|
|
| 7420 |
|
|
if (! bfd_get_section_contents (need_pad->owner, need_pad,
|
| 7421 |
|
|
p, 0, need_pad->size))
|
| 7422 |
|
|
return FALSE;
|
| 7423 |
|
|
|
| 7424 |
|
|
need_pad->contents = p;
|
| 7425 |
|
|
need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
|
| 7426 |
|
|
}
|
| 7427 |
|
|
else
|
| 7428 |
|
|
{
|
| 7429 |
|
|
p = bfd_realloc (need_pad->contents, need_pad->size + 8);
|
| 7430 |
|
|
if (p == NULL)
|
| 7431 |
|
|
return FALSE;
|
| 7432 |
|
|
|
| 7433 |
|
|
need_pad->contents = p;
|
| 7434 |
|
|
}
|
| 7435 |
|
|
|
| 7436 |
|
|
memset (need_pad->contents + need_pad->size, 0, 8);
|
| 7437 |
|
|
need_pad->size += 8;
|
| 7438 |
|
|
}
|
| 7439 |
|
|
|
| 7440 |
|
|
return TRUE;
|
| 7441 |
|
|
}
|
| 7442 |
|
|
|
| 7443 |
|
|
/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
|
| 7444 |
|
|
|
| 7445 |
|
|
asection *
|
| 7446 |
|
|
ppc64_elf_tls_setup (struct bfd_link_info *info,
|
| 7447 |
|
|
int no_tls_get_addr_opt,
|
| 7448 |
|
|
int *no_multi_toc)
|
| 7449 |
|
|
{
|
| 7450 |
|
|
struct ppc_link_hash_table *htab;
|
| 7451 |
|
|
|
| 7452 |
|
|
htab = ppc_hash_table (info);
|
| 7453 |
|
|
if (htab == NULL)
|
| 7454 |
|
|
return NULL;
|
| 7455 |
|
|
|
| 7456 |
|
|
if (*no_multi_toc)
|
| 7457 |
|
|
htab->do_multi_toc = 0;
|
| 7458 |
|
|
else if (!htab->do_multi_toc)
|
| 7459 |
|
|
*no_multi_toc = 1;
|
| 7460 |
|
|
|
| 7461 |
|
|
htab->tls_get_addr = ((struct ppc_link_hash_entry *)
|
| 7462 |
|
|
elf_link_hash_lookup (&htab->elf, ".__tls_get_addr",
|
| 7463 |
|
|
FALSE, FALSE, TRUE));
|
| 7464 |
|
|
/* Move dynamic linking info to the function descriptor sym. */
|
| 7465 |
|
|
if (htab->tls_get_addr != NULL)
|
| 7466 |
|
|
func_desc_adjust (&htab->tls_get_addr->elf, info);
|
| 7467 |
|
|
htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *)
|
| 7468 |
|
|
elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
|
| 7469 |
|
|
FALSE, FALSE, TRUE));
|
| 7470 |
|
|
if (!no_tls_get_addr_opt)
|
| 7471 |
|
|
{
|
| 7472 |
|
|
struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd;
|
| 7473 |
|
|
|
| 7474 |
|
|
opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt",
|
| 7475 |
|
|
FALSE, FALSE, TRUE);
|
| 7476 |
|
|
if (opt != NULL)
|
| 7477 |
|
|
func_desc_adjust (opt, info);
|
| 7478 |
|
|
opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
|
| 7479 |
|
|
FALSE, FALSE, TRUE);
|
| 7480 |
|
|
if (opt_fd != NULL
|
| 7481 |
|
|
&& (opt_fd->root.type == bfd_link_hash_defined
|
| 7482 |
|
|
|| opt_fd->root.type == bfd_link_hash_defweak))
|
| 7483 |
|
|
{
|
| 7484 |
|
|
/* If glibc supports an optimized __tls_get_addr call stub,
|
| 7485 |
|
|
signalled by the presence of __tls_get_addr_opt, and we'll
|
| 7486 |
|
|
be calling __tls_get_addr via a plt call stub, then
|
| 7487 |
|
|
make __tls_get_addr point to __tls_get_addr_opt. */
|
| 7488 |
|
|
tga_fd = &htab->tls_get_addr_fd->elf;
|
| 7489 |
|
|
if (htab->elf.dynamic_sections_created
|
| 7490 |
|
|
&& tga_fd != NULL
|
| 7491 |
|
|
&& (tga_fd->type == STT_FUNC
|
| 7492 |
|
|
|| tga_fd->needs_plt)
|
| 7493 |
|
|
&& !(SYMBOL_CALLS_LOCAL (info, tga_fd)
|
| 7494 |
|
|
|| (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT
|
| 7495 |
|
|
&& tga_fd->root.type == bfd_link_hash_undefweak)))
|
| 7496 |
|
|
{
|
| 7497 |
|
|
struct plt_entry *ent;
|
| 7498 |
|
|
|
| 7499 |
|
|
for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next)
|
| 7500 |
|
|
if (ent->plt.refcount > 0)
|
| 7501 |
|
|
break;
|
| 7502 |
|
|
if (ent != NULL)
|
| 7503 |
|
|
{
|
| 7504 |
|
|
tga_fd->root.type = bfd_link_hash_indirect;
|
| 7505 |
|
|
tga_fd->root.u.i.link = &opt_fd->root;
|
| 7506 |
|
|
ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd);
|
| 7507 |
|
|
if (opt_fd->dynindx != -1)
|
| 7508 |
|
|
{
|
| 7509 |
|
|
/* Use __tls_get_addr_opt in dynamic relocations. */
|
| 7510 |
|
|
opt_fd->dynindx = -1;
|
| 7511 |
|
|
_bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
|
| 7512 |
|
|
opt_fd->dynstr_index);
|
| 7513 |
|
|
if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd))
|
| 7514 |
|
|
return NULL;
|
| 7515 |
|
|
}
|
| 7516 |
|
|
htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd;
|
| 7517 |
|
|
tga = &htab->tls_get_addr->elf;
|
| 7518 |
|
|
if (opt != NULL && tga != NULL)
|
| 7519 |
|
|
{
|
| 7520 |
|
|
tga->root.type = bfd_link_hash_indirect;
|
| 7521 |
|
|
tga->root.u.i.link = &opt->root;
|
| 7522 |
|
|
ppc64_elf_copy_indirect_symbol (info, opt, tga);
|
| 7523 |
|
|
_bfd_elf_link_hash_hide_symbol (info, opt,
|
| 7524 |
|
|
tga->forced_local);
|
| 7525 |
|
|
htab->tls_get_addr = (struct ppc_link_hash_entry *) opt;
|
| 7526 |
|
|
}
|
| 7527 |
|
|
htab->tls_get_addr_fd->oh = htab->tls_get_addr;
|
| 7528 |
|
|
htab->tls_get_addr_fd->is_func_descriptor = 1;
|
| 7529 |
|
|
if (htab->tls_get_addr != NULL)
|
| 7530 |
|
|
{
|
| 7531 |
|
|
htab->tls_get_addr->oh = htab->tls_get_addr_fd;
|
| 7532 |
|
|
htab->tls_get_addr->is_func = 1;
|
| 7533 |
|
|
}
|
| 7534 |
|
|
}
|
| 7535 |
|
|
}
|
| 7536 |
|
|
}
|
| 7537 |
|
|
else
|
| 7538 |
|
|
no_tls_get_addr_opt = TRUE;
|
| 7539 |
|
|
}
|
| 7540 |
|
|
htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
|
| 7541 |
|
|
return _bfd_elf_tls_setup (info->output_bfd, info);
|
| 7542 |
|
|
}
|
| 7543 |
|
|
|
| 7544 |
|
|
/* Return TRUE iff REL is a branch reloc with a global symbol matching
|
| 7545 |
|
|
HASH1 or HASH2. */
|
| 7546 |
|
|
|
| 7547 |
|
|
static bfd_boolean
|
| 7548 |
|
|
branch_reloc_hash_match (const bfd *ibfd,
|
| 7549 |
|
|
const Elf_Internal_Rela *rel,
|
| 7550 |
|
|
const struct ppc_link_hash_entry *hash1,
|
| 7551 |
|
|
const struct ppc_link_hash_entry *hash2)
|
| 7552 |
|
|
{
|
| 7553 |
|
|
Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
|
| 7554 |
|
|
enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info);
|
| 7555 |
|
|
unsigned int r_symndx = ELF64_R_SYM (rel->r_info);
|
| 7556 |
|
|
|
| 7557 |
|
|
if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
|
| 7558 |
|
|
{
|
| 7559 |
|
|
struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
|
| 7560 |
|
|
struct elf_link_hash_entry *h;
|
| 7561 |
|
|
|
| 7562 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
| 7563 |
|
|
h = elf_follow_link (h);
|
| 7564 |
|
|
if (h == &hash1->elf || h == &hash2->elf)
|
| 7565 |
|
|
return TRUE;
|
| 7566 |
|
|
}
|
| 7567 |
|
|
return FALSE;
|
| 7568 |
|
|
}
|
| 7569 |
|
|
|
| 7570 |
|
|
/* Run through all the TLS relocs looking for optimization
|
| 7571 |
|
|
opportunities. The linker has been hacked (see ppc64elf.em) to do
|
| 7572 |
|
|
a preliminary section layout so that we know the TLS segment
|
| 7573 |
|
|
offsets. We can't optimize earlier because some optimizations need
|
| 7574 |
|
|
to know the tp offset, and we need to optimize before allocating
|
| 7575 |
|
|
dynamic relocations. */
|
| 7576 |
|
|
|
| 7577 |
|
|
bfd_boolean
|
| 7578 |
|
|
ppc64_elf_tls_optimize (struct bfd_link_info *info)
|
| 7579 |
|
|
{
|
| 7580 |
|
|
bfd *ibfd;
|
| 7581 |
|
|
asection *sec;
|
| 7582 |
|
|
struct ppc_link_hash_table *htab;
|
| 7583 |
|
|
unsigned char *toc_ref;
|
| 7584 |
|
|
int pass;
|
| 7585 |
|
|
|
| 7586 |
|
|
if (info->relocatable || !info->executable)
|
| 7587 |
|
|
return TRUE;
|
| 7588 |
|
|
|
| 7589 |
|
|
htab = ppc_hash_table (info);
|
| 7590 |
|
|
if (htab == NULL)
|
| 7591 |
|
|
return FALSE;
|
| 7592 |
|
|
|
| 7593 |
|
|
/* Make two passes over the relocs. On the first pass, mark toc
|
| 7594 |
|
|
entries involved with tls relocs, and check that tls relocs
|
| 7595 |
|
|
involved in setting up a tls_get_addr call are indeed followed by
|
| 7596 |
|
|
such a call. If they are not, we can't do any tls optimization.
|
| 7597 |
|
|
On the second pass twiddle tls_mask flags to notify
|
| 7598 |
|
|
relocate_section that optimization can be done, and adjust got
|
| 7599 |
|
|
and plt refcounts. */
|
| 7600 |
|
|
toc_ref = NULL;
|
| 7601 |
|
|
for (pass = 0; pass < 2; ++pass)
|
| 7602 |
|
|
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
|
| 7603 |
|
|
{
|
| 7604 |
|
|
Elf_Internal_Sym *locsyms = NULL;
|
| 7605 |
|
|
asection *toc = bfd_get_section_by_name (ibfd, ".toc");
|
| 7606 |
|
|
|
| 7607 |
|
|
for (sec = ibfd->sections; sec != NULL; sec = sec->next)
|
| 7608 |
|
|
if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
|
| 7609 |
|
|
{
|
| 7610 |
|
|
Elf_Internal_Rela *relstart, *rel, *relend;
|
| 7611 |
|
|
bfd_boolean found_tls_get_addr_arg = 0;
|
| 7612 |
|
|
|
| 7613 |
|
|
/* Read the relocations. */
|
| 7614 |
|
|
relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
|
| 7615 |
|
|
info->keep_memory);
|
| 7616 |
|
|
if (relstart == NULL)
|
| 7617 |
|
|
return FALSE;
|
| 7618 |
|
|
|
| 7619 |
|
|
relend = relstart + sec->reloc_count;
|
| 7620 |
|
|
for (rel = relstart; rel < relend; rel++)
|
| 7621 |
|
|
{
|
| 7622 |
|
|
enum elf_ppc64_reloc_type r_type;
|
| 7623 |
|
|
unsigned long r_symndx;
|
| 7624 |
|
|
struct elf_link_hash_entry *h;
|
| 7625 |
|
|
Elf_Internal_Sym *sym;
|
| 7626 |
|
|
asection *sym_sec;
|
| 7627 |
|
|
unsigned char *tls_mask;
|
| 7628 |
|
|
unsigned char tls_set, tls_clear, tls_type = 0;
|
| 7629 |
|
|
bfd_vma value;
|
| 7630 |
|
|
bfd_boolean ok_tprel, is_local;
|
| 7631 |
|
|
long toc_ref_index = 0;
|
| 7632 |
|
|
int expecting_tls_get_addr = 0;
|
| 7633 |
|
|
bfd_boolean ret = FALSE;
|
| 7634 |
|
|
|
| 7635 |
|
|
r_symndx = ELF64_R_SYM (rel->r_info);
|
| 7636 |
|
|
if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms,
|
| 7637 |
|
|
r_symndx, ibfd))
|
| 7638 |
|
|
{
|
| 7639 |
|
|
err_free_rel:
|
| 7640 |
|
|
if (elf_section_data (sec)->relocs != relstart)
|
| 7641 |
|
|
free (relstart);
|
| 7642 |
|
|
if (toc_ref != NULL)
|
| 7643 |
|
|
free (toc_ref);
|
| 7644 |
|
|
if (locsyms != NULL
|
| 7645 |
|
|
&& (elf_symtab_hdr (ibfd).contents
|
| 7646 |
|
|
!= (unsigned char *) locsyms))
|
| 7647 |
|
|
free (locsyms);
|
| 7648 |
|
|
return ret;
|
| 7649 |
|
|
}
|
| 7650 |
|
|
|
| 7651 |
|
|
if (h != NULL)
|
| 7652 |
|
|
{
|
| 7653 |
|
|
if (h->root.type == bfd_link_hash_defined
|
| 7654 |
|
|
|| h->root.type == bfd_link_hash_defweak)
|
| 7655 |
|
|
value = h->root.u.def.value;
|
| 7656 |
|
|
else if (h->root.type == bfd_link_hash_undefweak)
|
| 7657 |
|
|
value = 0;
|
| 7658 |
|
|
else
|
| 7659 |
|
|
{
|
| 7660 |
|
|
found_tls_get_addr_arg = 0;
|
| 7661 |
|
|
continue;
|
| 7662 |
|
|
}
|
| 7663 |
|
|
}
|
| 7664 |
|
|
else
|
| 7665 |
|
|
/* Symbols referenced by TLS relocs must be of type
|
| 7666 |
|
|
STT_TLS. So no need for .opd local sym adjust. */
|
| 7667 |
|
|
value = sym->st_value;
|
| 7668 |
|
|
|
| 7669 |
|
|
ok_tprel = FALSE;
|
| 7670 |
|
|
is_local = FALSE;
|
| 7671 |
|
|
if (h == NULL
|
| 7672 |
|
|
|| !h->def_dynamic)
|
| 7673 |
|
|
{
|
| 7674 |
|
|
is_local = TRUE;
|
| 7675 |
|
|
if (h != NULL
|
| 7676 |
|
|
&& h->root.type == bfd_link_hash_undefweak)
|
| 7677 |
|
|
ok_tprel = TRUE;
|
| 7678 |
|
|
else
|
| 7679 |
|
|
{
|
| 7680 |
|
|
value += sym_sec->output_offset;
|
| 7681 |
|
|
value += sym_sec->output_section->vma;
|
| 7682 |
|
|
value -= htab->elf.tls_sec->vma;
|
| 7683 |
|
|
ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31)
|
| 7684 |
|
|
< (bfd_vma) 1 << 32);
|
| 7685 |
|
|
}
|
| 7686 |
|
|
}
|
| 7687 |
|
|
|
| 7688 |
|
|
r_type = ELF64_R_TYPE (rel->r_info);
|
| 7689 |
|
|
/* If this section has old-style __tls_get_addr calls
|
| 7690 |
|
|
without marker relocs, then check that each
|
| 7691 |
|
|
__tls_get_addr call reloc is preceded by a reloc
|
| 7692 |
|
|
that conceivably belongs to the __tls_get_addr arg
|
| 7693 |
|
|
setup insn. If we don't find matching arg setup
|
| 7694 |
|
|
relocs, don't do any tls optimization. */
|
| 7695 |
|
|
if (pass == 0
|
| 7696 |
|
|
&& sec->has_tls_get_addr_call
|
| 7697 |
|
|
&& h != NULL
|
| 7698 |
|
|
&& (h == &htab->tls_get_addr->elf
|
| 7699 |
|
|
|| h == &htab->tls_get_addr_fd->elf)
|
| 7700 |
|
|
&& !found_tls_get_addr_arg
|
| 7701 |
|
|
&& is_branch_reloc (r_type))
|
| 7702 |
|
|
{
|
| 7703 |
|
|
info->callbacks->minfo (_("%H __tls_get_addr lost arg, "
|
| 7704 |
|
|
"TLS optimization disabled\n"),
|
| 7705 |
|
|
ibfd, sec, rel->r_offset);
|
| 7706 |
|
|
ret = TRUE;
|
| 7707 |
|
|
goto err_free_rel;
|
| 7708 |
|
|
}
|
| 7709 |
|
|
|
| 7710 |
|
|
found_tls_get_addr_arg = 0;
|
| 7711 |
|
|
switch (r_type)
|
| 7712 |
|
|
{
|
| 7713 |
|
|
case R_PPC64_GOT_TLSLD16:
|
| 7714 |
|
|
case R_PPC64_GOT_TLSLD16_LO:
|
| 7715 |
|
|
expecting_tls_get_addr = 1;
|
| 7716 |
|
|
found_tls_get_addr_arg = 1;
|
| 7717 |
|
|
/* Fall thru */
|
| 7718 |
|
|
|
| 7719 |
|
|
case R_PPC64_GOT_TLSLD16_HI:
|
| 7720 |
|
|
case R_PPC64_GOT_TLSLD16_HA:
|
| 7721 |
|
|
/* These relocs should never be against a symbol
|
| 7722 |
|
|
defined in a shared lib. Leave them alone if
|
| 7723 |
|
|
that turns out to be the case. */
|
| 7724 |
|
|
if (!is_local)
|
| 7725 |
|
|
continue;
|
| 7726 |
|
|
|
| 7727 |
|
|
/* LD -> LE */
|
| 7728 |
|
|
tls_set = 0;
|
| 7729 |
|
|
tls_clear = TLS_LD;
|
| 7730 |
|
|
tls_type = TLS_TLS | TLS_LD;
|
| 7731 |
|
|
break;
|
| 7732 |
|
|
|
| 7733 |
|
|
case R_PPC64_GOT_TLSGD16:
|
| 7734 |
|
|
case R_PPC64_GOT_TLSGD16_LO:
|
| 7735 |
|
|
expecting_tls_get_addr = 1;
|
| 7736 |
|
|
found_tls_get_addr_arg = 1;
|
| 7737 |
|
|
/* Fall thru */
|
| 7738 |
|
|
|
| 7739 |
|
|
case R_PPC64_GOT_TLSGD16_HI:
|
| 7740 |
|
|
case R_PPC64_GOT_TLSGD16_HA:
|
| 7741 |
|
|
if (ok_tprel)
|
| 7742 |
|
|
/* GD -> LE */
|
| 7743 |
|
|
tls_set = 0;
|
| 7744 |
|
|
else
|
| 7745 |
|
|
/* GD -> IE */
|
| 7746 |
|
|
tls_set = TLS_TLS | TLS_TPRELGD;
|
| 7747 |
|
|
tls_clear = TLS_GD;
|
| 7748 |
|
|
tls_type = TLS_TLS | TLS_GD;
|
| 7749 |
|
|
break;
|
| 7750 |
|
|
|
| 7751 |
|
|
case R_PPC64_GOT_TPREL16_DS:
|
| 7752 |
|
|
case R_PPC64_GOT_TPREL16_LO_DS:
|
| 7753 |
|
|
case R_PPC64_GOT_TPREL16_HI:
|
| 7754 |
|
|
case R_PPC64_GOT_TPREL16_HA:
|
| 7755 |
|
|
if (ok_tprel)
|
| 7756 |
|
|
{
|
| 7757 |
|
|
/* IE -> LE */
|
| 7758 |
|
|
tls_set = 0;
|
| 7759 |
|
|
tls_clear = TLS_TPREL;
|
| 7760 |
|
|
tls_type = TLS_TLS | TLS_TPREL;
|
| 7761 |
|
|
break;
|
| 7762 |
|
|
}
|
| 7763 |
|
|
continue;
|
| 7764 |
|
|
|
| 7765 |
|
|
case R_PPC64_TLSGD:
|
| 7766 |
|
|
case R_PPC64_TLSLD:
|
| 7767 |
|
|
found_tls_get_addr_arg = 1;
|
| 7768 |
|
|
/* Fall thru */
|
| 7769 |
|
|
|
| 7770 |
|
|
case R_PPC64_TLS:
|
| 7771 |
|
|
case R_PPC64_TOC16:
|
| 7772 |
|
|
case R_PPC64_TOC16_LO:
|
| 7773 |
|
|
if (sym_sec == NULL || sym_sec != toc)
|
| 7774 |
|
|
continue;
|
| 7775 |
|
|
|
| 7776 |
|
|
/* Mark this toc entry as referenced by a TLS
|
| 7777 |
|
|
code sequence. We can do that now in the
|
| 7778 |
|
|
case of R_PPC64_TLS, and after checking for
|
| 7779 |
|
|
tls_get_addr for the TOC16 relocs. */
|
| 7780 |
|
|
if (toc_ref == NULL)
|
| 7781 |
|
|
toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8);
|
| 7782 |
|
|
if (toc_ref == NULL)
|
| 7783 |
|
|
goto err_free_rel;
|
| 7784 |
|
|
|
| 7785 |
|
|
if (h != NULL)
|
| 7786 |
|
|
value = h->root.u.def.value;
|
| 7787 |
|
|
else
|
| 7788 |
|
|
value = sym->st_value;
|
| 7789 |
|
|
value += rel->r_addend;
|
| 7790 |
|
|
BFD_ASSERT (value < toc->size && value % 8 == 0);
|
| 7791 |
|
|
toc_ref_index = (value + toc->output_offset) / 8;
|
| 7792 |
|
|
if (r_type == R_PPC64_TLS
|
| 7793 |
|
|
|| r_type == R_PPC64_TLSGD
|
| 7794 |
|
|
|| r_type == R_PPC64_TLSLD)
|
| 7795 |
|
|
{
|
| 7796 |
|
|
toc_ref[toc_ref_index] = 1;
|
| 7797 |
|
|
continue;
|
| 7798 |
|
|
}
|
| 7799 |
|
|
|
| 7800 |
|
|
if (pass != 0 && toc_ref[toc_ref_index] == 0)
|
| 7801 |
|
|
continue;
|
| 7802 |
|
|
|
| 7803 |
|
|
tls_set = 0;
|
| 7804 |
|
|
tls_clear = 0;
|
| 7805 |
|
|
expecting_tls_get_addr = 2;
|
| 7806 |
|
|
break;
|
| 7807 |
|
|
|
| 7808 |
|
|
case R_PPC64_TPREL64:
|
| 7809 |
|
|
if (pass == 0
|
| 7810 |
|
|
|| sec != toc
|
| 7811 |
|
|
|| toc_ref == NULL
|
| 7812 |
|
|
|| !toc_ref[(rel->r_offset + toc->output_offset) / 8])
|
| 7813 |
|
|
continue;
|
| 7814 |
|
|
if (ok_tprel)
|
| 7815 |
|
|
{
|
| 7816 |
|
|
/* IE -> LE */
|
| 7817 |
|
|
tls_set = TLS_EXPLICIT;
|
| 7818 |
|
|
tls_clear = TLS_TPREL;
|
| 7819 |
|
|
break;
|
| 7820 |
|
|
}
|
| 7821 |
|
|
continue;
|
| 7822 |
|
|
|
| 7823 |
|
|
case R_PPC64_DTPMOD64:
|
| 7824 |
|
|
if (pass == 0
|
| 7825 |
|
|
|| sec != toc
|
| 7826 |
|
|
|| toc_ref == NULL
|
| 7827 |
|
|
|| !toc_ref[(rel->r_offset + toc->output_offset) / 8])
|
| 7828 |
|
|
continue;
|
| 7829 |
|
|
if (rel + 1 < relend
|
| 7830 |
|
|
&& (rel[1].r_info
|
| 7831 |
|
|
== ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64))
|
| 7832 |
|
|
&& rel[1].r_offset == rel->r_offset + 8)
|
| 7833 |
|
|
{
|
| 7834 |
|
|
if (ok_tprel)
|
| 7835 |
|
|
/* GD -> LE */
|
| 7836 |
|
|
tls_set = TLS_EXPLICIT | TLS_GD;
|
| 7837 |
|
|
else
|
| 7838 |
|
|
/* GD -> IE */
|
| 7839 |
|
|
tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD;
|
| 7840 |
|
|
tls_clear = TLS_GD;
|
| 7841 |
|
|
}
|
| 7842 |
|
|
else
|
| 7843 |
|
|
{
|
| 7844 |
|
|
if (!is_local)
|
| 7845 |
|
|
continue;
|
| 7846 |
|
|
|
| 7847 |
|
|
/* LD -> LE */
|
| 7848 |
|
|
tls_set = TLS_EXPLICIT;
|
| 7849 |
|
|
tls_clear = TLS_LD;
|
| 7850 |
|
|
}
|
| 7851 |
|
|
break;
|
| 7852 |
|
|
|
| 7853 |
|
|
default:
|
| 7854 |
|
|
continue;
|
| 7855 |
|
|
}
|
| 7856 |
|
|
|
| 7857 |
|
|
if (pass == 0)
|
| 7858 |
|
|
{
|
| 7859 |
|
|
if (!expecting_tls_get_addr
|
| 7860 |
|
|
|| !sec->has_tls_get_addr_call)
|
| 7861 |
|
|
continue;
|
| 7862 |
|
|
|
| 7863 |
|
|
if (rel + 1 < relend
|
| 7864 |
|
|
&& branch_reloc_hash_match (ibfd, rel + 1,
|
| 7865 |
|
|
htab->tls_get_addr,
|
| 7866 |
|
|
htab->tls_get_addr_fd))
|
| 7867 |
|
|
{
|
| 7868 |
|
|
if (expecting_tls_get_addr == 2)
|
| 7869 |
|
|
{
|
| 7870 |
|
|
/* Check for toc tls entries. */
|
| 7871 |
|
|
unsigned char *toc_tls;
|
| 7872 |
|
|
int retval;
|
| 7873 |
|
|
|
| 7874 |
|
|
retval = get_tls_mask (&toc_tls, NULL, NULL,
|
| 7875 |
|
|
&locsyms,
|
| 7876 |
|
|
rel, ibfd);
|
| 7877 |
|
|
if (retval == 0)
|
| 7878 |
|
|
goto err_free_rel;
|
| 7879 |
|
|
if (toc_tls != NULL)
|
| 7880 |
|
|
{
|
| 7881 |
|
|
if ((*toc_tls & (TLS_GD | TLS_LD)) != 0)
|
| 7882 |
|
|
found_tls_get_addr_arg = 1;
|
| 7883 |
|
|
if (retval > 1)
|
| 7884 |
|
|
toc_ref[toc_ref_index] = 1;
|
| 7885 |
|
|
}
|
| 7886 |
|
|
}
|
| 7887 |
|
|
continue;
|
| 7888 |
|
|
}
|
| 7889 |
|
|
|
| 7890 |
|
|
if (expecting_tls_get_addr != 1)
|
| 7891 |
|
|
continue;
|
| 7892 |
|
|
|
| 7893 |
|
|
/* Uh oh, we didn't find the expected call. We
|
| 7894 |
|
|
could just mark this symbol to exclude it
|
| 7895 |
|
|
from tls optimization but it's safer to skip
|
| 7896 |
|
|
the entire optimization. */
|
| 7897 |
|
|
info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
|
| 7898 |
|
|
"TLS optimization disabled\n"),
|
| 7899 |
|
|
ibfd, sec, rel->r_offset);
|
| 7900 |
|
|
ret = TRUE;
|
| 7901 |
|
|
goto err_free_rel;
|
| 7902 |
|
|
}
|
| 7903 |
|
|
|
| 7904 |
|
|
if (expecting_tls_get_addr && htab->tls_get_addr != NULL)
|
| 7905 |
|
|
{
|
| 7906 |
|
|
struct plt_entry *ent;
|
| 7907 |
|
|
for (ent = htab->tls_get_addr->elf.plt.plist;
|
| 7908 |
|
|
ent != NULL;
|
| 7909 |
|
|
ent = ent->next)
|
| 7910 |
|
|
if (ent->addend == 0)
|
| 7911 |
|
|
{
|
| 7912 |
|
|
if (ent->plt.refcount > 0)
|
| 7913 |
|
|
{
|
| 7914 |
|
|
ent->plt.refcount -= 1;
|
| 7915 |
|
|
expecting_tls_get_addr = 0;
|
| 7916 |
|
|
}
|
| 7917 |
|
|
break;
|
| 7918 |
|
|
}
|
| 7919 |
|
|
}
|
| 7920 |
|
|
|
| 7921 |
|
|
if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL)
|
| 7922 |
|
|
{
|
| 7923 |
|
|
struct plt_entry *ent;
|
| 7924 |
|
|
for (ent = htab->tls_get_addr_fd->elf.plt.plist;
|
| 7925 |
|
|
ent != NULL;
|
| 7926 |
|
|
ent = ent->next)
|
| 7927 |
|
|
if (ent->addend == 0)
|
| 7928 |
|
|
{
|
| 7929 |
|
|
if (ent->plt.refcount > 0)
|
| 7930 |
|
|
ent->plt.refcount -= 1;
|
| 7931 |
|
|
break;
|
| 7932 |
|
|
}
|
| 7933 |
|
|
}
|
| 7934 |
|
|
|
| 7935 |
|
|
if (tls_clear == 0)
|
| 7936 |
|
|
continue;
|
| 7937 |
|
|
|
| 7938 |
|
|
if ((tls_set & TLS_EXPLICIT) == 0)
|
| 7939 |
|
|
{
|
| 7940 |
|
|
struct got_entry *ent;
|
| 7941 |
|
|
|
| 7942 |
|
|
/* Adjust got entry for this reloc. */
|
| 7943 |
|
|
if (h != NULL)
|
| 7944 |
|
|
ent = h->got.glist;
|
| 7945 |
|
|
else
|
| 7946 |
|
|
ent = elf_local_got_ents (ibfd)[r_symndx];
|
| 7947 |
|
|
|
| 7948 |
|
|
for (; ent != NULL; ent = ent->next)
|
| 7949 |
|
|
if (ent->addend == rel->r_addend
|
| 7950 |
|
|
&& ent->owner == ibfd
|
| 7951 |
|
|
&& ent->tls_type == tls_type)
|
| 7952 |
|
|
break;
|
| 7953 |
|
|
if (ent == NULL)
|
| 7954 |
|
|
abort ();
|
| 7955 |
|
|
|
| 7956 |
|
|
if (tls_set == 0)
|
| 7957 |
|
|
{
|
| 7958 |
|
|
/* We managed to get rid of a got entry. */
|
| 7959 |
|
|
if (ent->got.refcount > 0)
|
| 7960 |
|
|
ent->got.refcount -= 1;
|
| 7961 |
|
|
}
|
| 7962 |
|
|
}
|
| 7963 |
|
|
else
|
| 7964 |
|
|
{
|
| 7965 |
|
|
/* If we got rid of a DTPMOD/DTPREL reloc pair then
|
| 7966 |
|
|
we'll lose one or two dyn relocs. */
|
| 7967 |
|
|
if (!dec_dynrel_count (rel->r_info, sec, info,
|
| 7968 |
|
|
NULL, h, sym_sec))
|
| 7969 |
|
|
return FALSE;
|
| 7970 |
|
|
|
| 7971 |
|
|
if (tls_set == (TLS_EXPLICIT | TLS_GD))
|
| 7972 |
|
|
{
|
| 7973 |
|
|
if (!dec_dynrel_count ((rel + 1)->r_info, sec, info,
|
| 7974 |
|
|
NULL, h, sym_sec))
|
| 7975 |
|
|
return FALSE;
|
| 7976 |
|
|
}
|
| 7977 |
|
|
}
|
| 7978 |
|
|
|
| 7979 |
|
|
*tls_mask |= tls_set;
|
| 7980 |
|
|
*tls_mask &= ~tls_clear;
|
| 7981 |
|
|
}
|
| 7982 |
|
|
|
| 7983 |
|
|
if (elf_section_data (sec)->relocs != relstart)
|
| 7984 |
|
|
free (relstart);
|
| 7985 |
|
|
}
|
| 7986 |
|
|
|
| 7987 |
|
|
if (locsyms != NULL
|
| 7988 |
|
|
&& (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms))
|
| 7989 |
|
|
{
|
| 7990 |
|
|
if (!info->keep_memory)
|
| 7991 |
|
|
free (locsyms);
|
| 7992 |
|
|
else
|
| 7993 |
|
|
elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms;
|
| 7994 |
|
|
}
|
| 7995 |
|
|
}
|
| 7996 |
|
|
|
| 7997 |
|
|
if (toc_ref != NULL)
|
| 7998 |
|
|
free (toc_ref);
|
| 7999 |
|
|
return TRUE;
|
| 8000 |
|
|
}
|
| 8001 |
|
|
|
| 8002 |
|
|
/* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
|
| 8003 |
|
|
the values of any global symbols in a toc section that has been
|
| 8004 |
|
|
edited. Globals in toc sections should be a rarity, so this function
|
| 8005 |
|
|
sets a flag if any are found in toc sections other than the one just
|
| 8006 |
|
|
edited, so that futher hash table traversals can be avoided. */
|
| 8007 |
|
|
|
| 8008 |
|
|
struct adjust_toc_info
|
| 8009 |
|
|
{
|
| 8010 |
|
|
asection *toc;
|
| 8011 |
|
|
unsigned long *skip;
|
| 8012 |
|
|
bfd_boolean global_toc_syms;
|
| 8013 |
|
|
};
|
| 8014 |
|
|
|
| 8015 |
|
|
enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 };
|
| 8016 |
|
|
|
| 8017 |
|
|
static bfd_boolean
|
| 8018 |
|
|
adjust_toc_syms (struct elf_link_hash_entry *h, void *inf)
|
| 8019 |
|
|
{
|
| 8020 |
|
|
struct ppc_link_hash_entry *eh;
|
| 8021 |
|
|
struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf;
|
| 8022 |
|
|
unsigned long i;
|
| 8023 |
|
|
|
| 8024 |
|
|
if (h->root.type != bfd_link_hash_defined
|
| 8025 |
|
|
&& h->root.type != bfd_link_hash_defweak)
|
| 8026 |
|
|
return TRUE;
|
| 8027 |
|
|
|
| 8028 |
|
|
eh = (struct ppc_link_hash_entry *) h;
|
| 8029 |
|
|
if (eh->adjust_done)
|
| 8030 |
|
|
return TRUE;
|
| 8031 |
|
|
|
| 8032 |
|
|
if (eh->elf.root.u.def.section == toc_inf->toc)
|
| 8033 |
|
|
{
|
| 8034 |
|
|
if (eh->elf.root.u.def.value > toc_inf->toc->rawsize)
|
| 8035 |
|
|
i = toc_inf->toc->rawsize >> 3;
|
| 8036 |
|
|
else
|
| 8037 |
|
|
i = eh->elf.root.u.def.value >> 3;
|
| 8038 |
|
|
|
| 8039 |
|
|
if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0)
|
| 8040 |
|
|
{
|
| 8041 |
|
|
(*_bfd_error_handler)
|
| 8042 |
|
|
(_("%s defined on removed toc entry"), eh->elf.root.root.string);
|
| 8043 |
|
|
do
|
| 8044 |
|
|
++i;
|
| 8045 |
|
|
while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0);
|
| 8046 |
|
|
eh->elf.root.u.def.value = (bfd_vma) i << 3;
|
| 8047 |
|
|
}
|
| 8048 |
|
|
|
| 8049 |
|
|
eh->elf.root.u.def.value -= toc_inf->skip[i];
|
| 8050 |
|
|
eh->adjust_done = 1;
|
| 8051 |
|
|
}
|
| 8052 |
|
|
else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0)
|
| 8053 |
|
|
toc_inf->global_toc_syms = TRUE;
|
| 8054 |
|
|
|
| 8055 |
|
|
return TRUE;
|
| 8056 |
|
|
}
|
| 8057 |
|
|
|
| 8058 |
163 |
khays |
/* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */
|
| 8059 |
|
|
|
| 8060 |
|
|
static bfd_boolean
|
| 8061 |
|
|
ok_lo_toc_insn (unsigned int insn)
|
| 8062 |
|
|
{
|
| 8063 |
|
|
return ((insn & (0x3f << 26)) == 14u << 26 /* addi */
|
| 8064 |
|
|
|| (insn & (0x3f << 26)) == 32u << 26 /* lwz */
|
| 8065 |
|
|
|| (insn & (0x3f << 26)) == 34u << 26 /* lbz */
|
| 8066 |
|
|
|| (insn & (0x3f << 26)) == 36u << 26 /* stw */
|
| 8067 |
|
|
|| (insn & (0x3f << 26)) == 38u << 26 /* stb */
|
| 8068 |
|
|
|| (insn & (0x3f << 26)) == 40u << 26 /* lhz */
|
| 8069 |
|
|
|| (insn & (0x3f << 26)) == 42u << 26 /* lha */
|
| 8070 |
|
|
|| (insn & (0x3f << 26)) == 44u << 26 /* sth */
|
| 8071 |
|
|
|| (insn & (0x3f << 26)) == 46u << 26 /* lmw */
|
| 8072 |
|
|
|| (insn & (0x3f << 26)) == 47u << 26 /* stmw */
|
| 8073 |
|
|
|| (insn & (0x3f << 26)) == 48u << 26 /* lfs */
|
| 8074 |
|
|
|| (insn & (0x3f << 26)) == 50u << 26 /* lfd */
|
| 8075 |
|
|
|| (insn & (0x3f << 26)) == 52u << 26 /* stfs */
|
| 8076 |
|
|
|| (insn & (0x3f << 26)) == 54u << 26 /* stfd */
|
| 8077 |
|
|
|| ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
|
| 8078 |
|
|
&& (insn & 3) != 1)
|
| 8079 |
|
|
|| ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
|
| 8080 |
|
|
&& ((insn & 3) == 0 || (insn & 3) == 3))
|
| 8081 |
|
|
|| (insn & (0x3f << 26)) == 12u << 26 /* addic */);
|
| 8082 |
|
|
}
|
| 8083 |
|
|
|
| 8084 |
14 |
khays |
/* Examine all relocs referencing .toc sections in order to remove
|
| 8085 |
|
|
unused .toc entries. */
|
| 8086 |
|
|
|
| 8087 |
|
|
bfd_boolean
|
| 8088 |
|
|
ppc64_elf_edit_toc (struct bfd_link_info *info)
|
| 8089 |
|
|
{
|
| 8090 |
|
|
bfd *ibfd;
|
| 8091 |
|
|
struct adjust_toc_info toc_inf;
|
| 8092 |
|
|
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
| 8093 |
|
|
|
| 8094 |
|
|
htab->do_toc_opt = 1;
|
| 8095 |
|
|
toc_inf.global_toc_syms = TRUE;
|
| 8096 |
|
|
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
|
| 8097 |
|
|
{
|
| 8098 |
|
|
asection *toc, *sec;
|
| 8099 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 8100 |
|
|
Elf_Internal_Sym *local_syms;
|
| 8101 |
|
|
Elf_Internal_Rela *relstart, *rel, *toc_relocs;
|
| 8102 |
|
|
unsigned long *skip, *drop;
|
| 8103 |
|
|
unsigned char *used;
|
| 8104 |
|
|
unsigned char *keep, last, some_unused;
|
| 8105 |
|
|
|
| 8106 |
|
|
if (!is_ppc64_elf (ibfd))
|
| 8107 |
|
|
continue;
|
| 8108 |
|
|
|
| 8109 |
|
|
toc = bfd_get_section_by_name (ibfd, ".toc");
|
| 8110 |
|
|
if (toc == NULL
|
| 8111 |
|
|
|| toc->size == 0
|
| 8112 |
|
|
|| toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
|
| 8113 |
|
|
|| elf_discarded_section (toc))
|
| 8114 |
|
|
continue;
|
| 8115 |
|
|
|
| 8116 |
|
|
toc_relocs = NULL;
|
| 8117 |
|
|
local_syms = NULL;
|
| 8118 |
|
|
symtab_hdr = &elf_symtab_hdr (ibfd);
|
| 8119 |
|
|
|
| 8120 |
|
|
/* Look at sections dropped from the final link. */
|
| 8121 |
|
|
skip = NULL;
|
| 8122 |
|
|
relstart = NULL;
|
| 8123 |
|
|
for (sec = ibfd->sections; sec != NULL; sec = sec->next)
|
| 8124 |
|
|
{
|
| 8125 |
|
|
if (sec->reloc_count == 0
|
| 8126 |
|
|
|| !elf_discarded_section (sec)
|
| 8127 |
|
|
|| get_opd_info (sec)
|
| 8128 |
|
|
|| (sec->flags & SEC_ALLOC) == 0
|
| 8129 |
|
|
|| (sec->flags & SEC_DEBUGGING) != 0)
|
| 8130 |
|
|
continue;
|
| 8131 |
|
|
|
| 8132 |
|
|
relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE);
|
| 8133 |
|
|
if (relstart == NULL)
|
| 8134 |
|
|
goto error_ret;
|
| 8135 |
|
|
|
| 8136 |
|
|
/* Run through the relocs to see which toc entries might be
|
| 8137 |
|
|
unused. */
|
| 8138 |
|
|
for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
|
| 8139 |
|
|
{
|
| 8140 |
|
|
enum elf_ppc64_reloc_type r_type;
|
| 8141 |
|
|
unsigned long r_symndx;
|
| 8142 |
|
|
asection *sym_sec;
|
| 8143 |
|
|
struct elf_link_hash_entry *h;
|
| 8144 |
|
|
Elf_Internal_Sym *sym;
|
| 8145 |
|
|
bfd_vma val;
|
| 8146 |
|
|
|
| 8147 |
|
|
r_type = ELF64_R_TYPE (rel->r_info);
|
| 8148 |
|
|
switch (r_type)
|
| 8149 |
|
|
{
|
| 8150 |
|
|
default:
|
| 8151 |
|
|
continue;
|
| 8152 |
|
|
|
| 8153 |
|
|
case R_PPC64_TOC16:
|
| 8154 |
|
|
case R_PPC64_TOC16_LO:
|
| 8155 |
|
|
case R_PPC64_TOC16_HI:
|
| 8156 |
|
|
case R_PPC64_TOC16_HA:
|
| 8157 |
|
|
case R_PPC64_TOC16_DS:
|
| 8158 |
|
|
case R_PPC64_TOC16_LO_DS:
|
| 8159 |
|
|
break;
|
| 8160 |
|
|
}
|
| 8161 |
|
|
|
| 8162 |
|
|
r_symndx = ELF64_R_SYM (rel->r_info);
|
| 8163 |
|
|
if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
|
| 8164 |
|
|
r_symndx, ibfd))
|
| 8165 |
|
|
goto error_ret;
|
| 8166 |
|
|
|
| 8167 |
|
|
if (sym_sec != toc)
|
| 8168 |
|
|
continue;
|
| 8169 |
|
|
|
| 8170 |
|
|
if (h != NULL)
|
| 8171 |
|
|
val = h->root.u.def.value;
|
| 8172 |
|
|
else
|
| 8173 |
|
|
val = sym->st_value;
|
| 8174 |
|
|
val += rel->r_addend;
|
| 8175 |
|
|
|
| 8176 |
|
|
if (val >= toc->size)
|
| 8177 |
|
|
continue;
|
| 8178 |
|
|
|
| 8179 |
|
|
/* Anything in the toc ought to be aligned to 8 bytes.
|
| 8180 |
|
|
If not, don't mark as unused. */
|
| 8181 |
|
|
if (val & 7)
|
| 8182 |
|
|
continue;
|
| 8183 |
|
|
|
| 8184 |
|
|
if (skip == NULL)
|
| 8185 |
|
|
{
|
| 8186 |
|
|
skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
|
| 8187 |
|
|
if (skip == NULL)
|
| 8188 |
|
|
goto error_ret;
|
| 8189 |
|
|
}
|
| 8190 |
|
|
|
| 8191 |
|
|
skip[val >> 3] = ref_from_discarded;
|
| 8192 |
|
|
}
|
| 8193 |
|
|
|
| 8194 |
|
|
if (elf_section_data (sec)->relocs != relstart)
|
| 8195 |
|
|
free (relstart);
|
| 8196 |
|
|
}
|
| 8197 |
|
|
|
| 8198 |
|
|
/* For largetoc loads of address constants, we can convert
|
| 8199 |
|
|
. addis rx,2,addr@got@ha
|
| 8200 |
|
|
. ld ry,addr@got@l(rx)
|
| 8201 |
|
|
to
|
| 8202 |
|
|
. addis rx,2,addr@toc@ha
|
| 8203 |
|
|
. addi ry,rx,addr@toc@l
|
| 8204 |
|
|
when addr is within 2G of the toc pointer. This then means
|
| 8205 |
|
|
that the word storing "addr" in the toc is no longer needed. */
|
| 8206 |
|
|
|
| 8207 |
|
|
if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc
|
| 8208 |
|
|
&& toc->output_section->rawsize < (bfd_vma) 1 << 31
|
| 8209 |
|
|
&& toc->reloc_count != 0)
|
| 8210 |
|
|
{
|
| 8211 |
|
|
/* Read toc relocs. */
|
| 8212 |
|
|
toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
|
| 8213 |
|
|
info->keep_memory);
|
| 8214 |
|
|
if (toc_relocs == NULL)
|
| 8215 |
|
|
goto error_ret;
|
| 8216 |
|
|
|
| 8217 |
|
|
for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
|
| 8218 |
|
|
{
|
| 8219 |
|
|
enum elf_ppc64_reloc_type r_type;
|
| 8220 |
|
|
unsigned long r_symndx;
|
| 8221 |
|
|
asection *sym_sec;
|
| 8222 |
|
|
struct elf_link_hash_entry *h;
|
| 8223 |
|
|
Elf_Internal_Sym *sym;
|
| 8224 |
|
|
bfd_vma val, addr;
|
| 8225 |
|
|
|
| 8226 |
|
|
r_type = ELF64_R_TYPE (rel->r_info);
|
| 8227 |
|
|
if (r_type != R_PPC64_ADDR64)
|
| 8228 |
|
|
continue;
|
| 8229 |
|
|
|
| 8230 |
|
|
r_symndx = ELF64_R_SYM (rel->r_info);
|
| 8231 |
|
|
if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
|
| 8232 |
|
|
r_symndx, ibfd))
|
| 8233 |
|
|
goto error_ret;
|
| 8234 |
|
|
|
| 8235 |
|
|
if (sym_sec == NULL
|
| 8236 |
|
|
|| elf_discarded_section (sym_sec))
|
| 8237 |
|
|
continue;
|
| 8238 |
|
|
|
| 8239 |
|
|
if (!SYMBOL_CALLS_LOCAL (info, h))
|
| 8240 |
|
|
continue;
|
| 8241 |
|
|
|
| 8242 |
|
|
if (h != NULL)
|
| 8243 |
|
|
{
|
| 8244 |
|
|
if (h->type == STT_GNU_IFUNC)
|
| 8245 |
|
|
continue;
|
| 8246 |
|
|
val = h->root.u.def.value;
|
| 8247 |
|
|
}
|
| 8248 |
|
|
else
|
| 8249 |
|
|
{
|
| 8250 |
|
|
if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
|
| 8251 |
|
|
continue;
|
| 8252 |
|
|
val = sym->st_value;
|
| 8253 |
|
|
}
|
| 8254 |
|
|
val += rel->r_addend;
|
| 8255 |
|
|
val += sym_sec->output_section->vma + sym_sec->output_offset;
|
| 8256 |
|
|
|
| 8257 |
|
|
/* We don't yet know the exact toc pointer value, but we
|
| 8258 |
|
|
know it will be somewhere in the toc section. Don't
|
| 8259 |
|
|
optimize if the difference from any possible toc
|
| 8260 |
|
|
pointer is outside [ff..f80008000, 7fff7fff]. */
|
| 8261 |
|
|
addr = toc->output_section->vma + TOC_BASE_OFF;
|
| 8262 |
|
|
if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
|
| 8263 |
|
|
continue;
|
| 8264 |
|
|
|
| 8265 |
|
|
addr = toc->output_section->vma + toc->output_section->rawsize;
|
| 8266 |
|
|
if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32)
|
| 8267 |
|
|
continue;
|
| 8268 |
|
|
|
| 8269 |
|
|
if (skip == NULL)
|
| 8270 |
|
|
{
|
| 8271 |
|
|
skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8);
|
| 8272 |
|
|
if (skip == NULL)
|
| 8273 |
|
|
goto error_ret;
|
| 8274 |
|
|
}
|
| 8275 |
|
|
|
| 8276 |
|
|
skip[rel->r_offset >> 3]
|
| 8277 |
|
|
|= can_optimize | ((rel - toc_relocs) << 2);
|
| 8278 |
|
|
}
|
| 8279 |
|
|
}
|
| 8280 |
|
|
|
| 8281 |
|
|
if (skip == NULL)
|
| 8282 |
|
|
continue;
|
| 8283 |
|
|
|
| 8284 |
|
|
used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8);
|
| 8285 |
|
|
if (used == NULL)
|
| 8286 |
|
|
{
|
| 8287 |
|
|
error_ret:
|
| 8288 |
|
|
if (local_syms != NULL
|
| 8289 |
|
|
&& symtab_hdr->contents != (unsigned char *) local_syms)
|
| 8290 |
|
|
free (local_syms);
|
| 8291 |
|
|
if (sec != NULL
|
| 8292 |
|
|
&& relstart != NULL
|
| 8293 |
|
|
&& elf_section_data (sec)->relocs != relstart)
|
| 8294 |
|
|
free (relstart);
|
| 8295 |
|
|
if (toc_relocs != NULL
|
| 8296 |
|
|
&& elf_section_data (toc)->relocs != toc_relocs)
|
| 8297 |
|
|
free (toc_relocs);
|
| 8298 |
|
|
if (skip != NULL)
|
| 8299 |
|
|
free (skip);
|
| 8300 |
|
|
return FALSE;
|
| 8301 |
|
|
}
|
| 8302 |
|
|
|
| 8303 |
|
|
/* Now check all kept sections that might reference the toc.
|
| 8304 |
|
|
Check the toc itself last. */
|
| 8305 |
|
|
for (sec = (ibfd->sections == toc && toc->next ? toc->next
|
| 8306 |
|
|
: ibfd->sections);
|
| 8307 |
|
|
sec != NULL;
|
| 8308 |
|
|
sec = (sec == toc ? NULL
|
| 8309 |
|
|
: sec->next == NULL ? toc
|
| 8310 |
|
|
: sec->next == toc && toc->next ? toc->next
|
| 8311 |
|
|
: sec->next))
|
| 8312 |
|
|
{
|
| 8313 |
|
|
int repeat;
|
| 8314 |
|
|
|
| 8315 |
|
|
if (sec->reloc_count == 0
|
| 8316 |
|
|
|| elf_discarded_section (sec)
|
| 8317 |
|
|
|| get_opd_info (sec)
|
| 8318 |
|
|
|| (sec->flags & SEC_ALLOC) == 0
|
| 8319 |
|
|
|| (sec->flags & SEC_DEBUGGING) != 0)
|
| 8320 |
|
|
continue;
|
| 8321 |
|
|
|
| 8322 |
|
|
relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
|
| 8323 |
|
|
info->keep_memory);
|
| 8324 |
|
|
if (relstart == NULL)
|
| 8325 |
|
|
goto error_ret;
|
| 8326 |
|
|
|
| 8327 |
|
|
/* Mark toc entries referenced as used. */
|
| 8328 |
|
|
repeat = 0;
|
| 8329 |
|
|
do
|
| 8330 |
|
|
for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
|
| 8331 |
|
|
{
|
| 8332 |
|
|
enum elf_ppc64_reloc_type r_type;
|
| 8333 |
|
|
unsigned long r_symndx;
|
| 8334 |
|
|
asection *sym_sec;
|
| 8335 |
|
|
struct elf_link_hash_entry *h;
|
| 8336 |
|
|
Elf_Internal_Sym *sym;
|
| 8337 |
|
|
bfd_vma val;
|
| 8338 |
163 |
khays |
enum {no_check, check_lo, check_ha} insn_check;
|
| 8339 |
14 |
khays |
|
| 8340 |
|
|
r_type = ELF64_R_TYPE (rel->r_info);
|
| 8341 |
|
|
switch (r_type)
|
| 8342 |
|
|
{
|
| 8343 |
163 |
khays |
default:
|
| 8344 |
|
|
insn_check = no_check;
|
| 8345 |
|
|
break;
|
| 8346 |
|
|
|
| 8347 |
|
|
case R_PPC64_GOT_TLSLD16_HA:
|
| 8348 |
|
|
case R_PPC64_GOT_TLSGD16_HA:
|
| 8349 |
|
|
case R_PPC64_GOT_TPREL16_HA:
|
| 8350 |
|
|
case R_PPC64_GOT_DTPREL16_HA:
|
| 8351 |
|
|
case R_PPC64_GOT16_HA:
|
| 8352 |
|
|
case R_PPC64_TOC16_HA:
|
| 8353 |
|
|
insn_check = check_ha;
|
| 8354 |
|
|
break;
|
| 8355 |
|
|
|
| 8356 |
|
|
case R_PPC64_GOT_TLSLD16_LO:
|
| 8357 |
|
|
case R_PPC64_GOT_TLSGD16_LO:
|
| 8358 |
|
|
case R_PPC64_GOT_TPREL16_LO_DS:
|
| 8359 |
|
|
case R_PPC64_GOT_DTPREL16_LO_DS:
|
| 8360 |
|
|
case R_PPC64_GOT16_LO:
|
| 8361 |
|
|
case R_PPC64_GOT16_LO_DS:
|
| 8362 |
|
|
case R_PPC64_TOC16_LO:
|
| 8363 |
|
|
case R_PPC64_TOC16_LO_DS:
|
| 8364 |
|
|
insn_check = check_lo;
|
| 8365 |
|
|
break;
|
| 8366 |
|
|
}
|
| 8367 |
|
|
|
| 8368 |
|
|
if (insn_check != no_check)
|
| 8369 |
|
|
{
|
| 8370 |
|
|
bfd_vma off = rel->r_offset & ~3;
|
| 8371 |
|
|
unsigned char buf[4];
|
| 8372 |
|
|
unsigned int insn;
|
| 8373 |
|
|
|
| 8374 |
|
|
if (!bfd_get_section_contents (ibfd, sec, buf, off, 4))
|
| 8375 |
|
|
{
|
| 8376 |
|
|
free (used);
|
| 8377 |
|
|
goto error_ret;
|
| 8378 |
|
|
}
|
| 8379 |
|
|
insn = bfd_get_32 (ibfd, buf);
|
| 8380 |
|
|
if (insn_check == check_lo
|
| 8381 |
|
|
? !ok_lo_toc_insn (insn)
|
| 8382 |
|
|
: ((insn & ((0x3f << 26) | 0x1f << 16))
|
| 8383 |
|
|
!= ((15u << 26) | (2 << 16)) /* addis rt,2,imm */))
|
| 8384 |
|
|
{
|
| 8385 |
|
|
char str[12];
|
| 8386 |
|
|
|
| 8387 |
|
|
ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1;
|
| 8388 |
|
|
sprintf (str, "%#08x", insn);
|
| 8389 |
|
|
info->callbacks->einfo
|
| 8390 |
|
|
(_("%P: %H: toc optimization is not supported for"
|
| 8391 |
|
|
" %s instruction.\n"),
|
| 8392 |
|
|
ibfd, sec, rel->r_offset & ~3, str);
|
| 8393 |
|
|
}
|
| 8394 |
|
|
}
|
| 8395 |
|
|
|
| 8396 |
|
|
switch (r_type)
|
| 8397 |
|
|
{
|
| 8398 |
14 |
khays |
case R_PPC64_TOC16:
|
| 8399 |
|
|
case R_PPC64_TOC16_LO:
|
| 8400 |
|
|
case R_PPC64_TOC16_HI:
|
| 8401 |
|
|
case R_PPC64_TOC16_HA:
|
| 8402 |
|
|
case R_PPC64_TOC16_DS:
|
| 8403 |
|
|
case R_PPC64_TOC16_LO_DS:
|
| 8404 |
|
|
/* In case we're taking addresses of toc entries. */
|
| 8405 |
|
|
case R_PPC64_ADDR64:
|
| 8406 |
|
|
break;
|
| 8407 |
|
|
|
| 8408 |
|
|
default:
|
| 8409 |
|
|
continue;
|
| 8410 |
|
|
}
|
| 8411 |
|
|
|
| 8412 |
|
|
r_symndx = ELF64_R_SYM (rel->r_info);
|
| 8413 |
|
|
if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
|
| 8414 |
|
|
r_symndx, ibfd))
|
| 8415 |
|
|
{
|
| 8416 |
|
|
free (used);
|
| 8417 |
|
|
goto error_ret;
|
| 8418 |
|
|
}
|
| 8419 |
|
|
|
| 8420 |
|
|
if (sym_sec != toc)
|
| 8421 |
|
|
continue;
|
| 8422 |
|
|
|
| 8423 |
|
|
if (h != NULL)
|
| 8424 |
|
|
val = h->root.u.def.value;
|
| 8425 |
|
|
else
|
| 8426 |
|
|
val = sym->st_value;
|
| 8427 |
|
|
val += rel->r_addend;
|
| 8428 |
|
|
|
| 8429 |
|
|
if (val >= toc->size)
|
| 8430 |
|
|
continue;
|
| 8431 |
|
|
|
| 8432 |
|
|
if ((skip[val >> 3] & can_optimize) != 0)
|
| 8433 |
|
|
{
|
| 8434 |
|
|
bfd_vma off;
|
| 8435 |
|
|
unsigned char opc;
|
| 8436 |
|
|
|
| 8437 |
|
|
switch (r_type)
|
| 8438 |
|
|
{
|
| 8439 |
|
|
case R_PPC64_TOC16_HA:
|
| 8440 |
|
|
break;
|
| 8441 |
|
|
|
| 8442 |
|
|
case R_PPC64_TOC16_LO_DS:
|
| 8443 |
|
|
off = rel->r_offset + (bfd_big_endian (ibfd) ? -2 : 3);
|
| 8444 |
|
|
if (!bfd_get_section_contents (ibfd, sec, &opc, off, 1))
|
| 8445 |
163 |
khays |
{
|
| 8446 |
|
|
free (used);
|
| 8447 |
|
|
goto error_ret;
|
| 8448 |
|
|
}
|
| 8449 |
14 |
khays |
if ((opc & (0x3f << 2)) == (58u << 2))
|
| 8450 |
|
|
break;
|
| 8451 |
|
|
/* Fall thru */
|
| 8452 |
|
|
|
| 8453 |
|
|
default:
|
| 8454 |
|
|
/* Wrong sort of reloc, or not a ld. We may
|
| 8455 |
|
|
as well clear ref_from_discarded too. */
|
| 8456 |
|
|
skip[val >> 3] = 0;
|
| 8457 |
|
|
}
|
| 8458 |
|
|
}
|
| 8459 |
|
|
|
| 8460 |
|
|
/* For the toc section, we only mark as used if
|
| 8461 |
|
|
this entry itself isn't unused. */
|
| 8462 |
|
|
if (sec == toc
|
| 8463 |
|
|
&& !used[val >> 3]
|
| 8464 |
|
|
&& (used[rel->r_offset >> 3]
|
| 8465 |
|
|
|| !(skip[rel->r_offset >> 3] & ref_from_discarded)))
|
| 8466 |
|
|
/* Do all the relocs again, to catch reference
|
| 8467 |
|
|
chains. */
|
| 8468 |
|
|
repeat = 1;
|
| 8469 |
|
|
|
| 8470 |
|
|
used[val >> 3] = 1;
|
| 8471 |
|
|
}
|
| 8472 |
|
|
while (repeat);
|
| 8473 |
|
|
|
| 8474 |
|
|
if (elf_section_data (sec)->relocs != relstart)
|
| 8475 |
|
|
free (relstart);
|
| 8476 |
|
|
}
|
| 8477 |
|
|
|
| 8478 |
|
|
/* Merge the used and skip arrays. Assume that TOC
|
| 8479 |
|
|
doublewords not appearing as either used or unused belong
|
| 8480 |
|
|
to to an entry more than one doubleword in size. */
|
| 8481 |
|
|
for (drop = skip, keep = used, last = 0, some_unused = 0;
|
| 8482 |
|
|
drop < skip + (toc->size + 7) / 8;
|
| 8483 |
|
|
++drop, ++keep)
|
| 8484 |
|
|
{
|
| 8485 |
|
|
if (*keep)
|
| 8486 |
|
|
{
|
| 8487 |
|
|
*drop &= ~ref_from_discarded;
|
| 8488 |
|
|
if ((*drop & can_optimize) != 0)
|
| 8489 |
|
|
some_unused = 1;
|
| 8490 |
|
|
last = 0;
|
| 8491 |
|
|
}
|
| 8492 |
163 |
khays |
else if ((*drop & ref_from_discarded) != 0)
|
| 8493 |
14 |
khays |
{
|
| 8494 |
|
|
some_unused = 1;
|
| 8495 |
|
|
last = ref_from_discarded;
|
| 8496 |
|
|
}
|
| 8497 |
|
|
else
|
| 8498 |
|
|
*drop = last;
|
| 8499 |
|
|
}
|
| 8500 |
|
|
|
| 8501 |
|
|
free (used);
|
| 8502 |
|
|
|
| 8503 |
|
|
if (some_unused)
|
| 8504 |
|
|
{
|
| 8505 |
|
|
bfd_byte *contents, *src;
|
| 8506 |
|
|
unsigned long off;
|
| 8507 |
|
|
Elf_Internal_Sym *sym;
|
| 8508 |
|
|
bfd_boolean local_toc_syms = FALSE;
|
| 8509 |
|
|
|
| 8510 |
|
|
/* Shuffle the toc contents, and at the same time convert the
|
| 8511 |
|
|
skip array from booleans into offsets. */
|
| 8512 |
|
|
if (!bfd_malloc_and_get_section (ibfd, toc, &contents))
|
| 8513 |
|
|
goto error_ret;
|
| 8514 |
|
|
|
| 8515 |
|
|
elf_section_data (toc)->this_hdr.contents = contents;
|
| 8516 |
|
|
|
| 8517 |
|
|
for (src = contents, off = 0, drop = skip;
|
| 8518 |
|
|
src < contents + toc->size;
|
| 8519 |
|
|
src += 8, ++drop)
|
| 8520 |
|
|
{
|
| 8521 |
|
|
if ((*drop & (can_optimize | ref_from_discarded)) != 0)
|
| 8522 |
|
|
off += 8;
|
| 8523 |
|
|
else if (off != 0)
|
| 8524 |
|
|
{
|
| 8525 |
|
|
*drop = off;
|
| 8526 |
|
|
memcpy (src - off, src, 8);
|
| 8527 |
|
|
}
|
| 8528 |
|
|
}
|
| 8529 |
|
|
*drop = off;
|
| 8530 |
|
|
toc->rawsize = toc->size;
|
| 8531 |
|
|
toc->size = src - contents - off;
|
| 8532 |
|
|
|
| 8533 |
|
|
/* Adjust addends for relocs against the toc section sym,
|
| 8534 |
|
|
and optimize any accesses we can. */
|
| 8535 |
|
|
for (sec = ibfd->sections; sec != NULL; sec = sec->next)
|
| 8536 |
|
|
{
|
| 8537 |
|
|
if (sec->reloc_count == 0
|
| 8538 |
|
|
|| elf_discarded_section (sec))
|
| 8539 |
|
|
continue;
|
| 8540 |
|
|
|
| 8541 |
|
|
relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
|
| 8542 |
|
|
info->keep_memory);
|
| 8543 |
|
|
if (relstart == NULL)
|
| 8544 |
|
|
goto error_ret;
|
| 8545 |
|
|
|
| 8546 |
|
|
for (rel = relstart; rel < relstart + sec->reloc_count; ++rel)
|
| 8547 |
|
|
{
|
| 8548 |
|
|
enum elf_ppc64_reloc_type r_type;
|
| 8549 |
|
|
unsigned long r_symndx;
|
| 8550 |
|
|
asection *sym_sec;
|
| 8551 |
|
|
struct elf_link_hash_entry *h;
|
| 8552 |
|
|
bfd_vma val;
|
| 8553 |
|
|
|
| 8554 |
|
|
r_type = ELF64_R_TYPE (rel->r_info);
|
| 8555 |
|
|
switch (r_type)
|
| 8556 |
|
|
{
|
| 8557 |
|
|
default:
|
| 8558 |
|
|
continue;
|
| 8559 |
|
|
|
| 8560 |
|
|
case R_PPC64_TOC16:
|
| 8561 |
|
|
case R_PPC64_TOC16_LO:
|
| 8562 |
|
|
case R_PPC64_TOC16_HI:
|
| 8563 |
|
|
case R_PPC64_TOC16_HA:
|
| 8564 |
|
|
case R_PPC64_TOC16_DS:
|
| 8565 |
|
|
case R_PPC64_TOC16_LO_DS:
|
| 8566 |
|
|
case R_PPC64_ADDR64:
|
| 8567 |
|
|
break;
|
| 8568 |
|
|
}
|
| 8569 |
|
|
|
| 8570 |
|
|
r_symndx = ELF64_R_SYM (rel->r_info);
|
| 8571 |
|
|
if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
|
| 8572 |
|
|
r_symndx, ibfd))
|
| 8573 |
|
|
goto error_ret;
|
| 8574 |
|
|
|
| 8575 |
|
|
if (sym_sec != toc)
|
| 8576 |
|
|
continue;
|
| 8577 |
|
|
|
| 8578 |
|
|
if (h != NULL)
|
| 8579 |
|
|
val = h->root.u.def.value;
|
| 8580 |
|
|
else
|
| 8581 |
|
|
{
|
| 8582 |
|
|
val = sym->st_value;
|
| 8583 |
|
|
if (val != 0)
|
| 8584 |
|
|
local_toc_syms = TRUE;
|
| 8585 |
|
|
}
|
| 8586 |
|
|
|
| 8587 |
|
|
val += rel->r_addend;
|
| 8588 |
|
|
|
| 8589 |
|
|
if (val > toc->rawsize)
|
| 8590 |
|
|
val = toc->rawsize;
|
| 8591 |
|
|
else if ((skip[val >> 3] & ref_from_discarded) != 0)
|
| 8592 |
|
|
continue;
|
| 8593 |
|
|
else if ((skip[val >> 3] & can_optimize) != 0)
|
| 8594 |
|
|
{
|
| 8595 |
|
|
Elf_Internal_Rela *tocrel
|
| 8596 |
|
|
= toc_relocs + (skip[val >> 3] >> 2);
|
| 8597 |
|
|
unsigned long tsym = ELF64_R_SYM (tocrel->r_info);
|
| 8598 |
|
|
|
| 8599 |
|
|
switch (r_type)
|
| 8600 |
|
|
{
|
| 8601 |
|
|
case R_PPC64_TOC16_HA:
|
| 8602 |
|
|
rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA);
|
| 8603 |
|
|
break;
|
| 8604 |
|
|
|
| 8605 |
|
|
case R_PPC64_TOC16_LO_DS:
|
| 8606 |
|
|
rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT);
|
| 8607 |
|
|
break;
|
| 8608 |
|
|
|
| 8609 |
|
|
default:
|
| 8610 |
163 |
khays |
if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
|
| 8611 |
|
|
ppc_howto_init ();
|
| 8612 |
|
|
info->callbacks->einfo
|
| 8613 |
|
|
(_("%P: %H: %s relocation references "
|
| 8614 |
|
|
"optimized away TOC entry\n"),
|
| 8615 |
|
|
ibfd, sec, rel->r_offset,
|
| 8616 |
|
|
ppc64_elf_howto_table[r_type]->name);
|
| 8617 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 8618 |
|
|
goto error_ret;
|
| 8619 |
14 |
khays |
}
|
| 8620 |
|
|
rel->r_addend = tocrel->r_addend;
|
| 8621 |
|
|
elf_section_data (sec)->relocs = relstart;
|
| 8622 |
|
|
continue;
|
| 8623 |
|
|
}
|
| 8624 |
|
|
|
| 8625 |
|
|
if (h != NULL || sym->st_value != 0)
|
| 8626 |
|
|
continue;
|
| 8627 |
|
|
|
| 8628 |
|
|
rel->r_addend -= skip[val >> 3];
|
| 8629 |
|
|
elf_section_data (sec)->relocs = relstart;
|
| 8630 |
|
|
}
|
| 8631 |
|
|
|
| 8632 |
|
|
if (elf_section_data (sec)->relocs != relstart)
|
| 8633 |
|
|
free (relstart);
|
| 8634 |
|
|
}
|
| 8635 |
|
|
|
| 8636 |
|
|
/* We shouldn't have local or global symbols defined in the TOC,
|
| 8637 |
|
|
but handle them anyway. */
|
| 8638 |
|
|
if (local_syms != NULL)
|
| 8639 |
|
|
for (sym = local_syms;
|
| 8640 |
|
|
sym < local_syms + symtab_hdr->sh_info;
|
| 8641 |
|
|
++sym)
|
| 8642 |
|
|
if (sym->st_value != 0
|
| 8643 |
|
|
&& bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc)
|
| 8644 |
|
|
{
|
| 8645 |
|
|
unsigned long i;
|
| 8646 |
|
|
|
| 8647 |
|
|
if (sym->st_value > toc->rawsize)
|
| 8648 |
|
|
i = toc->rawsize >> 3;
|
| 8649 |
|
|
else
|
| 8650 |
|
|
i = sym->st_value >> 3;
|
| 8651 |
|
|
|
| 8652 |
|
|
if ((skip[i] & (ref_from_discarded | can_optimize)) != 0)
|
| 8653 |
|
|
{
|
| 8654 |
|
|
if (local_toc_syms)
|
| 8655 |
|
|
(*_bfd_error_handler)
|
| 8656 |
|
|
(_("%s defined on removed toc entry"),
|
| 8657 |
|
|
bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL));
|
| 8658 |
|
|
do
|
| 8659 |
|
|
++i;
|
| 8660 |
|
|
while ((skip[i] & (ref_from_discarded | can_optimize)));
|
| 8661 |
|
|
sym->st_value = (bfd_vma) i << 3;
|
| 8662 |
|
|
}
|
| 8663 |
|
|
|
| 8664 |
|
|
sym->st_value -= skip[i];
|
| 8665 |
|
|
symtab_hdr->contents = (unsigned char *) local_syms;
|
| 8666 |
|
|
}
|
| 8667 |
|
|
|
| 8668 |
|
|
/* Adjust any global syms defined in this toc input section. */
|
| 8669 |
|
|
if (toc_inf.global_toc_syms)
|
| 8670 |
|
|
{
|
| 8671 |
|
|
toc_inf.toc = toc;
|
| 8672 |
|
|
toc_inf.skip = skip;
|
| 8673 |
|
|
toc_inf.global_toc_syms = FALSE;
|
| 8674 |
|
|
elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms,
|
| 8675 |
|
|
&toc_inf);
|
| 8676 |
|
|
}
|
| 8677 |
|
|
|
| 8678 |
|
|
if (toc->reloc_count != 0)
|
| 8679 |
|
|
{
|
| 8680 |
|
|
Elf_Internal_Shdr *rel_hdr;
|
| 8681 |
|
|
Elf_Internal_Rela *wrel;
|
| 8682 |
|
|
bfd_size_type sz;
|
| 8683 |
|
|
|
| 8684 |
|
|
/* Remove unused toc relocs, and adjust those we keep. */
|
| 8685 |
|
|
if (toc_relocs == NULL)
|
| 8686 |
|
|
toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL,
|
| 8687 |
|
|
info->keep_memory);
|
| 8688 |
|
|
if (toc_relocs == NULL)
|
| 8689 |
|
|
goto error_ret;
|
| 8690 |
|
|
|
| 8691 |
|
|
wrel = toc_relocs;
|
| 8692 |
|
|
for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel)
|
| 8693 |
|
|
if ((skip[rel->r_offset >> 3]
|
| 8694 |
|
|
& (ref_from_discarded | can_optimize)) == 0)
|
| 8695 |
|
|
{
|
| 8696 |
|
|
wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3];
|
| 8697 |
|
|
wrel->r_info = rel->r_info;
|
| 8698 |
|
|
wrel->r_addend = rel->r_addend;
|
| 8699 |
|
|
++wrel;
|
| 8700 |
|
|
}
|
| 8701 |
|
|
else if (!dec_dynrel_count (rel->r_info, toc, info,
|
| 8702 |
|
|
&local_syms, NULL, NULL))
|
| 8703 |
|
|
goto error_ret;
|
| 8704 |
|
|
|
| 8705 |
|
|
elf_section_data (toc)->relocs = toc_relocs;
|
| 8706 |
|
|
toc->reloc_count = wrel - toc_relocs;
|
| 8707 |
|
|
rel_hdr = _bfd_elf_single_rel_hdr (toc);
|
| 8708 |
|
|
sz = rel_hdr->sh_entsize;
|
| 8709 |
|
|
rel_hdr->sh_size = toc->reloc_count * sz;
|
| 8710 |
|
|
}
|
| 8711 |
|
|
}
|
| 8712 |
|
|
else if (toc_relocs != NULL
|
| 8713 |
|
|
&& elf_section_data (toc)->relocs != toc_relocs)
|
| 8714 |
|
|
free (toc_relocs);
|
| 8715 |
|
|
|
| 8716 |
|
|
if (local_syms != NULL
|
| 8717 |
|
|
&& symtab_hdr->contents != (unsigned char *) local_syms)
|
| 8718 |
|
|
{
|
| 8719 |
|
|
if (!info->keep_memory)
|
| 8720 |
|
|
free (local_syms);
|
| 8721 |
|
|
else
|
| 8722 |
|
|
symtab_hdr->contents = (unsigned char *) local_syms;
|
| 8723 |
|
|
}
|
| 8724 |
|
|
free (skip);
|
| 8725 |
|
|
}
|
| 8726 |
|
|
|
| 8727 |
|
|
return TRUE;
|
| 8728 |
|
|
}
|
| 8729 |
|
|
|
| 8730 |
|
|
/* Return true iff input section I references the TOC using
|
| 8731 |
|
|
instructions limited to +/-32k offsets. */
|
| 8732 |
|
|
|
| 8733 |
|
|
bfd_boolean
|
| 8734 |
|
|
ppc64_elf_has_small_toc_reloc (asection *i)
|
| 8735 |
|
|
{
|
| 8736 |
|
|
return (is_ppc64_elf (i->owner)
|
| 8737 |
|
|
&& ppc64_elf_tdata (i->owner)->has_small_toc_reloc);
|
| 8738 |
|
|
}
|
| 8739 |
|
|
|
| 8740 |
|
|
/* Allocate space for one GOT entry. */
|
| 8741 |
|
|
|
| 8742 |
|
|
static void
|
| 8743 |
|
|
allocate_got (struct elf_link_hash_entry *h,
|
| 8744 |
|
|
struct bfd_link_info *info,
|
| 8745 |
|
|
struct got_entry *gent)
|
| 8746 |
|
|
{
|
| 8747 |
|
|
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
| 8748 |
|
|
bfd_boolean dyn;
|
| 8749 |
|
|
struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h;
|
| 8750 |
|
|
int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)
|
| 8751 |
|
|
? 16 : 8);
|
| 8752 |
|
|
int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD
|
| 8753 |
|
|
? 2 : 1) * sizeof (Elf64_External_Rela);
|
| 8754 |
|
|
asection *got = ppc64_elf_tdata (gent->owner)->got;
|
| 8755 |
|
|
|
| 8756 |
|
|
gent->got.offset = got->size;
|
| 8757 |
|
|
got->size += entsize;
|
| 8758 |
|
|
|
| 8759 |
|
|
dyn = htab->elf.dynamic_sections_created;
|
| 8760 |
|
|
if ((info->shared
|
| 8761 |
|
|
|| WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
|
| 8762 |
|
|
&& (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|
| 8763 |
|
|
|| h->root.type != bfd_link_hash_undefweak))
|
| 8764 |
|
|
{
|
| 8765 |
|
|
asection *relgot = ppc64_elf_tdata (gent->owner)->relgot;
|
| 8766 |
|
|
relgot->size += rentsize;
|
| 8767 |
|
|
}
|
| 8768 |
|
|
else if (h->type == STT_GNU_IFUNC)
|
| 8769 |
|
|
{
|
| 8770 |
|
|
asection *relgot = htab->reliplt;
|
| 8771 |
|
|
relgot->size += rentsize;
|
| 8772 |
|
|
htab->got_reli_size += rentsize;
|
| 8773 |
|
|
}
|
| 8774 |
|
|
}
|
| 8775 |
|
|
|
| 8776 |
|
|
/* This function merges got entries in the same toc group. */
|
| 8777 |
|
|
|
| 8778 |
|
|
static void
|
| 8779 |
|
|
merge_got_entries (struct got_entry **pent)
|
| 8780 |
|
|
{
|
| 8781 |
|
|
struct got_entry *ent, *ent2;
|
| 8782 |
|
|
|
| 8783 |
|
|
for (ent = *pent; ent != NULL; ent = ent->next)
|
| 8784 |
|
|
if (!ent->is_indirect)
|
| 8785 |
|
|
for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next)
|
| 8786 |
|
|
if (!ent2->is_indirect
|
| 8787 |
|
|
&& ent2->addend == ent->addend
|
| 8788 |
|
|
&& ent2->tls_type == ent->tls_type
|
| 8789 |
|
|
&& elf_gp (ent2->owner) == elf_gp (ent->owner))
|
| 8790 |
|
|
{
|
| 8791 |
|
|
ent2->is_indirect = TRUE;
|
| 8792 |
|
|
ent2->got.ent = ent;
|
| 8793 |
|
|
}
|
| 8794 |
|
|
}
|
| 8795 |
|
|
|
| 8796 |
|
|
/* Allocate space in .plt, .got and associated reloc sections for
|
| 8797 |
|
|
dynamic relocs. */
|
| 8798 |
|
|
|
| 8799 |
|
|
static bfd_boolean
|
| 8800 |
|
|
allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
|
| 8801 |
|
|
{
|
| 8802 |
|
|
struct bfd_link_info *info;
|
| 8803 |
|
|
struct ppc_link_hash_table *htab;
|
| 8804 |
|
|
asection *s;
|
| 8805 |
|
|
struct ppc_link_hash_entry *eh;
|
| 8806 |
|
|
struct elf_dyn_relocs *p;
|
| 8807 |
|
|
struct got_entry **pgent, *gent;
|
| 8808 |
|
|
|
| 8809 |
|
|
if (h->root.type == bfd_link_hash_indirect)
|
| 8810 |
|
|
return TRUE;
|
| 8811 |
|
|
|
| 8812 |
|
|
info = (struct bfd_link_info *) inf;
|
| 8813 |
|
|
htab = ppc_hash_table (info);
|
| 8814 |
|
|
if (htab == NULL)
|
| 8815 |
|
|
return FALSE;
|
| 8816 |
|
|
|
| 8817 |
|
|
if ((htab->elf.dynamic_sections_created
|
| 8818 |
|
|
&& h->dynindx != -1
|
| 8819 |
|
|
&& WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
|
| 8820 |
|
|
|| h->type == STT_GNU_IFUNC)
|
| 8821 |
|
|
{
|
| 8822 |
|
|
struct plt_entry *pent;
|
| 8823 |
|
|
bfd_boolean doneone = FALSE;
|
| 8824 |
|
|
for (pent = h->plt.plist; pent != NULL; pent = pent->next)
|
| 8825 |
|
|
if (pent->plt.refcount > 0)
|
| 8826 |
|
|
{
|
| 8827 |
|
|
if (!htab->elf.dynamic_sections_created
|
| 8828 |
|
|
|| h->dynindx == -1)
|
| 8829 |
|
|
{
|
| 8830 |
|
|
s = htab->iplt;
|
| 8831 |
|
|
pent->plt.offset = s->size;
|
| 8832 |
|
|
s->size += PLT_ENTRY_SIZE;
|
| 8833 |
|
|
s = htab->reliplt;
|
| 8834 |
|
|
}
|
| 8835 |
|
|
else
|
| 8836 |
|
|
{
|
| 8837 |
|
|
/* If this is the first .plt entry, make room for the special
|
| 8838 |
|
|
first entry. */
|
| 8839 |
|
|
s = htab->plt;
|
| 8840 |
|
|
if (s->size == 0)
|
| 8841 |
|
|
s->size += PLT_INITIAL_ENTRY_SIZE;
|
| 8842 |
|
|
|
| 8843 |
|
|
pent->plt.offset = s->size;
|
| 8844 |
|
|
|
| 8845 |
|
|
/* Make room for this entry. */
|
| 8846 |
|
|
s->size += PLT_ENTRY_SIZE;
|
| 8847 |
|
|
|
| 8848 |
|
|
/* Make room for the .glink code. */
|
| 8849 |
|
|
s = htab->glink;
|
| 8850 |
|
|
if (s->size == 0)
|
| 8851 |
|
|
s->size += GLINK_CALL_STUB_SIZE;
|
| 8852 |
|
|
/* We need bigger stubs past index 32767. */
|
| 8853 |
|
|
if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
|
| 8854 |
|
|
s->size += 4;
|
| 8855 |
|
|
s->size += 2*4;
|
| 8856 |
|
|
|
| 8857 |
|
|
/* We also need to make an entry in the .rela.plt section. */
|
| 8858 |
|
|
s = htab->relplt;
|
| 8859 |
|
|
}
|
| 8860 |
|
|
s->size += sizeof (Elf64_External_Rela);
|
| 8861 |
|
|
doneone = TRUE;
|
| 8862 |
|
|
}
|
| 8863 |
|
|
else
|
| 8864 |
|
|
pent->plt.offset = (bfd_vma) -1;
|
| 8865 |
|
|
if (!doneone)
|
| 8866 |
|
|
{
|
| 8867 |
|
|
h->plt.plist = NULL;
|
| 8868 |
|
|
h->needs_plt = 0;
|
| 8869 |
|
|
}
|
| 8870 |
|
|
}
|
| 8871 |
|
|
else
|
| 8872 |
|
|
{
|
| 8873 |
|
|
h->plt.plist = NULL;
|
| 8874 |
|
|
h->needs_plt = 0;
|
| 8875 |
|
|
}
|
| 8876 |
|
|
|
| 8877 |
|
|
eh = (struct ppc_link_hash_entry *) h;
|
| 8878 |
|
|
/* Run through the TLS GD got entries first if we're changing them
|
| 8879 |
|
|
to TPREL. */
|
| 8880 |
|
|
if ((eh->tls_mask & TLS_TPRELGD) != 0)
|
| 8881 |
|
|
for (gent = h->got.glist; gent != NULL; gent = gent->next)
|
| 8882 |
|
|
if (gent->got.refcount > 0
|
| 8883 |
|
|
&& (gent->tls_type & TLS_GD) != 0)
|
| 8884 |
|
|
{
|
| 8885 |
|
|
/* This was a GD entry that has been converted to TPREL. If
|
| 8886 |
|
|
there happens to be a TPREL entry we can use that one. */
|
| 8887 |
|
|
struct got_entry *ent;
|
| 8888 |
|
|
for (ent = h->got.glist; ent != NULL; ent = ent->next)
|
| 8889 |
|
|
if (ent->got.refcount > 0
|
| 8890 |
|
|
&& (ent->tls_type & TLS_TPREL) != 0
|
| 8891 |
|
|
&& ent->addend == gent->addend
|
| 8892 |
|
|
&& ent->owner == gent->owner)
|
| 8893 |
|
|
{
|
| 8894 |
|
|
gent->got.refcount = 0;
|
| 8895 |
|
|
break;
|
| 8896 |
|
|
}
|
| 8897 |
|
|
|
| 8898 |
|
|
/* If not, then we'll be using our own TPREL entry. */
|
| 8899 |
|
|
if (gent->got.refcount != 0)
|
| 8900 |
|
|
gent->tls_type = TLS_TLS | TLS_TPREL;
|
| 8901 |
|
|
}
|
| 8902 |
|
|
|
| 8903 |
|
|
/* Remove any list entry that won't generate a word in the GOT before
|
| 8904 |
|
|
we call merge_got_entries. Otherwise we risk merging to empty
|
| 8905 |
|
|
entries. */
|
| 8906 |
|
|
pgent = &h->got.glist;
|
| 8907 |
|
|
while ((gent = *pgent) != NULL)
|
| 8908 |
|
|
if (gent->got.refcount > 0)
|
| 8909 |
|
|
{
|
| 8910 |
|
|
if ((gent->tls_type & TLS_LD) != 0
|
| 8911 |
|
|
&& !h->def_dynamic)
|
| 8912 |
|
|
{
|
| 8913 |
|
|
ppc64_tlsld_got (gent->owner)->got.refcount += 1;
|
| 8914 |
|
|
*pgent = gent->next;
|
| 8915 |
|
|
}
|
| 8916 |
|
|
else
|
| 8917 |
|
|
pgent = &gent->next;
|
| 8918 |
|
|
}
|
| 8919 |
|
|
else
|
| 8920 |
|
|
*pgent = gent->next;
|
| 8921 |
|
|
|
| 8922 |
|
|
if (!htab->do_multi_toc)
|
| 8923 |
|
|
merge_got_entries (&h->got.glist);
|
| 8924 |
|
|
|
| 8925 |
|
|
for (gent = h->got.glist; gent != NULL; gent = gent->next)
|
| 8926 |
|
|
if (!gent->is_indirect)
|
| 8927 |
|
|
{
|
| 8928 |
|
|
/* Make sure this symbol is output as a dynamic symbol.
|
| 8929 |
|
|
Undefined weak syms won't yet be marked as dynamic,
|
| 8930 |
|
|
nor will all TLS symbols. */
|
| 8931 |
|
|
if (h->dynindx == -1
|
| 8932 |
|
|
&& !h->forced_local
|
| 8933 |
|
|
&& h->type != STT_GNU_IFUNC
|
| 8934 |
|
|
&& htab->elf.dynamic_sections_created)
|
| 8935 |
|
|
{
|
| 8936 |
|
|
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
| 8937 |
|
|
return FALSE;
|
| 8938 |
|
|
}
|
| 8939 |
|
|
|
| 8940 |
|
|
if (!is_ppc64_elf (gent->owner))
|
| 8941 |
|
|
abort ();
|
| 8942 |
|
|
|
| 8943 |
|
|
allocate_got (h, info, gent);
|
| 8944 |
|
|
}
|
| 8945 |
|
|
|
| 8946 |
|
|
if (eh->dyn_relocs == NULL
|
| 8947 |
|
|
|| (!htab->elf.dynamic_sections_created
|
| 8948 |
|
|
&& h->type != STT_GNU_IFUNC))
|
| 8949 |
|
|
return TRUE;
|
| 8950 |
|
|
|
| 8951 |
|
|
/* In the shared -Bsymbolic case, discard space allocated for
|
| 8952 |
|
|
dynamic pc-relative relocs against symbols which turn out to be
|
| 8953 |
|
|
defined in regular objects. For the normal shared case, discard
|
| 8954 |
|
|
space for relocs that have become local due to symbol visibility
|
| 8955 |
|
|
changes. */
|
| 8956 |
|
|
|
| 8957 |
|
|
if (info->shared)
|
| 8958 |
|
|
{
|
| 8959 |
|
|
/* Relocs that use pc_count are those that appear on a call insn,
|
| 8960 |
|
|
or certain REL relocs (see must_be_dyn_reloc) that can be
|
| 8961 |
|
|
generated via assembly. We want calls to protected symbols to
|
| 8962 |
|
|
resolve directly to the function rather than going via the plt.
|
| 8963 |
|
|
If people want function pointer comparisons to work as expected
|
| 8964 |
|
|
then they should avoid writing weird assembly. */
|
| 8965 |
|
|
if (SYMBOL_CALLS_LOCAL (info, h))
|
| 8966 |
|
|
{
|
| 8967 |
|
|
struct elf_dyn_relocs **pp;
|
| 8968 |
|
|
|
| 8969 |
|
|
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
|
| 8970 |
|
|
{
|
| 8971 |
|
|
p->count -= p->pc_count;
|
| 8972 |
|
|
p->pc_count = 0;
|
| 8973 |
|
|
if (p->count == 0)
|
| 8974 |
|
|
*pp = p->next;
|
| 8975 |
|
|
else
|
| 8976 |
|
|
pp = &p->next;
|
| 8977 |
|
|
}
|
| 8978 |
|
|
}
|
| 8979 |
|
|
|
| 8980 |
|
|
/* Also discard relocs on undefined weak syms with non-default
|
| 8981 |
|
|
visibility. */
|
| 8982 |
|
|
if (eh->dyn_relocs != NULL
|
| 8983 |
|
|
&& h->root.type == bfd_link_hash_undefweak)
|
| 8984 |
|
|
{
|
| 8985 |
|
|
if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
|
| 8986 |
|
|
eh->dyn_relocs = NULL;
|
| 8987 |
|
|
|
| 8988 |
|
|
/* Make sure this symbol is output as a dynamic symbol.
|
| 8989 |
|
|
Undefined weak syms won't yet be marked as dynamic. */
|
| 8990 |
|
|
else if (h->dynindx == -1
|
| 8991 |
|
|
&& !h->forced_local)
|
| 8992 |
|
|
{
|
| 8993 |
|
|
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
| 8994 |
|
|
return FALSE;
|
| 8995 |
|
|
}
|
| 8996 |
|
|
}
|
| 8997 |
|
|
}
|
| 8998 |
|
|
else if (h->type == STT_GNU_IFUNC)
|
| 8999 |
|
|
{
|
| 9000 |
|
|
if (!h->non_got_ref)
|
| 9001 |
|
|
eh->dyn_relocs = NULL;
|
| 9002 |
|
|
}
|
| 9003 |
|
|
else if (ELIMINATE_COPY_RELOCS)
|
| 9004 |
|
|
{
|
| 9005 |
|
|
/* For the non-shared case, discard space for relocs against
|
| 9006 |
|
|
symbols which turn out to need copy relocs or are not
|
| 9007 |
|
|
dynamic. */
|
| 9008 |
|
|
|
| 9009 |
|
|
if (!h->non_got_ref
|
| 9010 |
|
|
&& !h->def_regular)
|
| 9011 |
|
|
{
|
| 9012 |
|
|
/* Make sure this symbol is output as a dynamic symbol.
|
| 9013 |
|
|
Undefined weak syms won't yet be marked as dynamic. */
|
| 9014 |
|
|
if (h->dynindx == -1
|
| 9015 |
|
|
&& !h->forced_local)
|
| 9016 |
|
|
{
|
| 9017 |
|
|
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
| 9018 |
|
|
return FALSE;
|
| 9019 |
|
|
}
|
| 9020 |
|
|
|
| 9021 |
|
|
/* If that succeeded, we know we'll be keeping all the
|
| 9022 |
|
|
relocs. */
|
| 9023 |
|
|
if (h->dynindx != -1)
|
| 9024 |
|
|
goto keep;
|
| 9025 |
|
|
}
|
| 9026 |
|
|
|
| 9027 |
|
|
eh->dyn_relocs = NULL;
|
| 9028 |
|
|
|
| 9029 |
|
|
keep: ;
|
| 9030 |
|
|
}
|
| 9031 |
|
|
|
| 9032 |
|
|
/* Finally, allocate space. */
|
| 9033 |
|
|
for (p = eh->dyn_relocs; p != NULL; p = p->next)
|
| 9034 |
|
|
{
|
| 9035 |
|
|
asection *sreloc = elf_section_data (p->sec)->sreloc;
|
| 9036 |
|
|
if (!htab->elf.dynamic_sections_created)
|
| 9037 |
|
|
sreloc = htab->reliplt;
|
| 9038 |
|
|
sreloc->size += p->count * sizeof (Elf64_External_Rela);
|
| 9039 |
|
|
}
|
| 9040 |
|
|
|
| 9041 |
|
|
return TRUE;
|
| 9042 |
|
|
}
|
| 9043 |
|
|
|
| 9044 |
|
|
/* Find any dynamic relocs that apply to read-only sections. */
|
| 9045 |
|
|
|
| 9046 |
|
|
static bfd_boolean
|
| 9047 |
|
|
readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
|
| 9048 |
|
|
{
|
| 9049 |
|
|
struct ppc_link_hash_entry *eh;
|
| 9050 |
|
|
struct elf_dyn_relocs *p;
|
| 9051 |
|
|
|
| 9052 |
|
|
eh = (struct ppc_link_hash_entry *) h;
|
| 9053 |
|
|
for (p = eh->dyn_relocs; p != NULL; p = p->next)
|
| 9054 |
|
|
{
|
| 9055 |
|
|
asection *s = p->sec->output_section;
|
| 9056 |
|
|
|
| 9057 |
|
|
if (s != NULL && (s->flags & SEC_READONLY) != 0)
|
| 9058 |
|
|
{
|
| 9059 |
|
|
struct bfd_link_info *info = inf;
|
| 9060 |
|
|
|
| 9061 |
|
|
info->flags |= DF_TEXTREL;
|
| 9062 |
|
|
|
| 9063 |
|
|
/* Not an error, just cut short the traversal. */
|
| 9064 |
|
|
return FALSE;
|
| 9065 |
|
|
}
|
| 9066 |
|
|
}
|
| 9067 |
|
|
return TRUE;
|
| 9068 |
|
|
}
|
| 9069 |
|
|
|
| 9070 |
|
|
/* Set the sizes of the dynamic sections. */
|
| 9071 |
|
|
|
| 9072 |
|
|
static bfd_boolean
|
| 9073 |
|
|
ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
|
| 9074 |
|
|
struct bfd_link_info *info)
|
| 9075 |
|
|
{
|
| 9076 |
|
|
struct ppc_link_hash_table *htab;
|
| 9077 |
|
|
bfd *dynobj;
|
| 9078 |
|
|
asection *s;
|
| 9079 |
|
|
bfd_boolean relocs;
|
| 9080 |
|
|
bfd *ibfd;
|
| 9081 |
|
|
struct got_entry *first_tlsld;
|
| 9082 |
|
|
|
| 9083 |
|
|
htab = ppc_hash_table (info);
|
| 9084 |
|
|
if (htab == NULL)
|
| 9085 |
|
|
return FALSE;
|
| 9086 |
|
|
|
| 9087 |
|
|
dynobj = htab->elf.dynobj;
|
| 9088 |
|
|
if (dynobj == NULL)
|
| 9089 |
|
|
abort ();
|
| 9090 |
|
|
|
| 9091 |
|
|
if (htab->elf.dynamic_sections_created)
|
| 9092 |
|
|
{
|
| 9093 |
|
|
/* Set the contents of the .interp section to the interpreter. */
|
| 9094 |
|
|
if (info->executable)
|
| 9095 |
|
|
{
|
| 9096 |
|
|
s = bfd_get_section_by_name (dynobj, ".interp");
|
| 9097 |
|
|
if (s == NULL)
|
| 9098 |
|
|
abort ();
|
| 9099 |
|
|
s->size = sizeof ELF_DYNAMIC_INTERPRETER;
|
| 9100 |
|
|
s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
|
| 9101 |
|
|
}
|
| 9102 |
|
|
}
|
| 9103 |
|
|
|
| 9104 |
|
|
/* Set up .got offsets for local syms, and space for local dynamic
|
| 9105 |
|
|
relocs. */
|
| 9106 |
|
|
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
|
| 9107 |
|
|
{
|
| 9108 |
|
|
struct got_entry **lgot_ents;
|
| 9109 |
|
|
struct got_entry **end_lgot_ents;
|
| 9110 |
|
|
struct plt_entry **local_plt;
|
| 9111 |
|
|
struct plt_entry **end_local_plt;
|
| 9112 |
|
|
unsigned char *lgot_masks;
|
| 9113 |
|
|
bfd_size_type locsymcount;
|
| 9114 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 9115 |
|
|
asection *srel;
|
| 9116 |
|
|
|
| 9117 |
|
|
if (!is_ppc64_elf (ibfd))
|
| 9118 |
|
|
continue;
|
| 9119 |
|
|
|
| 9120 |
|
|
for (s = ibfd->sections; s != NULL; s = s->next)
|
| 9121 |
|
|
{
|
| 9122 |
|
|
struct elf_dyn_relocs *p;
|
| 9123 |
|
|
|
| 9124 |
|
|
for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
|
| 9125 |
|
|
{
|
| 9126 |
|
|
if (!bfd_is_abs_section (p->sec)
|
| 9127 |
|
|
&& bfd_is_abs_section (p->sec->output_section))
|
| 9128 |
|
|
{
|
| 9129 |
|
|
/* Input section has been discarded, either because
|
| 9130 |
|
|
it is a copy of a linkonce section or due to
|
| 9131 |
|
|
linker script /DISCARD/, so we'll be discarding
|
| 9132 |
|
|
the relocs too. */
|
| 9133 |
|
|
}
|
| 9134 |
|
|
else if (p->count != 0)
|
| 9135 |
|
|
{
|
| 9136 |
|
|
srel = elf_section_data (p->sec)->sreloc;
|
| 9137 |
|
|
if (!htab->elf.dynamic_sections_created)
|
| 9138 |
|
|
srel = htab->reliplt;
|
| 9139 |
|
|
srel->size += p->count * sizeof (Elf64_External_Rela);
|
| 9140 |
|
|
if ((p->sec->output_section->flags & SEC_READONLY) != 0)
|
| 9141 |
|
|
info->flags |= DF_TEXTREL;
|
| 9142 |
|
|
}
|
| 9143 |
|
|
}
|
| 9144 |
|
|
}
|
| 9145 |
|
|
|
| 9146 |
|
|
lgot_ents = elf_local_got_ents (ibfd);
|
| 9147 |
|
|
if (!lgot_ents)
|
| 9148 |
|
|
continue;
|
| 9149 |
|
|
|
| 9150 |
|
|
symtab_hdr = &elf_symtab_hdr (ibfd);
|
| 9151 |
|
|
locsymcount = symtab_hdr->sh_info;
|
| 9152 |
|
|
end_lgot_ents = lgot_ents + locsymcount;
|
| 9153 |
|
|
local_plt = (struct plt_entry **) end_lgot_ents;
|
| 9154 |
|
|
end_local_plt = local_plt + locsymcount;
|
| 9155 |
|
|
lgot_masks = (unsigned char *) end_local_plt;
|
| 9156 |
|
|
s = ppc64_elf_tdata (ibfd)->got;
|
| 9157 |
|
|
srel = ppc64_elf_tdata (ibfd)->relgot;
|
| 9158 |
|
|
for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
|
| 9159 |
|
|
{
|
| 9160 |
|
|
struct got_entry **pent, *ent;
|
| 9161 |
|
|
|
| 9162 |
|
|
pent = lgot_ents;
|
| 9163 |
|
|
while ((ent = *pent) != NULL)
|
| 9164 |
|
|
if (ent->got.refcount > 0)
|
| 9165 |
|
|
{
|
| 9166 |
|
|
if ((ent->tls_type & *lgot_masks & TLS_LD) != 0)
|
| 9167 |
|
|
{
|
| 9168 |
|
|
ppc64_tlsld_got (ibfd)->got.refcount += 1;
|
| 9169 |
|
|
*pent = ent->next;
|
| 9170 |
|
|
}
|
| 9171 |
|
|
else
|
| 9172 |
|
|
{
|
| 9173 |
|
|
unsigned int num = 1;
|
| 9174 |
|
|
ent->got.offset = s->size;
|
| 9175 |
|
|
if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
|
| 9176 |
|
|
num = 2;
|
| 9177 |
|
|
s->size += num * 8;
|
| 9178 |
|
|
if (info->shared)
|
| 9179 |
|
|
srel->size += num * sizeof (Elf64_External_Rela);
|
| 9180 |
|
|
else if ((*lgot_masks & PLT_IFUNC) != 0)
|
| 9181 |
|
|
{
|
| 9182 |
|
|
htab->reliplt->size
|
| 9183 |
|
|
+= num * sizeof (Elf64_External_Rela);
|
| 9184 |
|
|
htab->got_reli_size
|
| 9185 |
|
|
+= num * sizeof (Elf64_External_Rela);
|
| 9186 |
|
|
}
|
| 9187 |
|
|
pent = &ent->next;
|
| 9188 |
|
|
}
|
| 9189 |
|
|
}
|
| 9190 |
|
|
else
|
| 9191 |
|
|
*pent = ent->next;
|
| 9192 |
|
|
}
|
| 9193 |
|
|
|
| 9194 |
|
|
/* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
|
| 9195 |
|
|
for (; local_plt < end_local_plt; ++local_plt)
|
| 9196 |
|
|
{
|
| 9197 |
|
|
struct plt_entry *ent;
|
| 9198 |
|
|
|
| 9199 |
|
|
for (ent = *local_plt; ent != NULL; ent = ent->next)
|
| 9200 |
|
|
if (ent->plt.refcount > 0)
|
| 9201 |
|
|
{
|
| 9202 |
|
|
s = htab->iplt;
|
| 9203 |
|
|
ent->plt.offset = s->size;
|
| 9204 |
|
|
s->size += PLT_ENTRY_SIZE;
|
| 9205 |
|
|
|
| 9206 |
|
|
htab->reliplt->size += sizeof (Elf64_External_Rela);
|
| 9207 |
|
|
}
|
| 9208 |
|
|
else
|
| 9209 |
|
|
ent->plt.offset = (bfd_vma) -1;
|
| 9210 |
|
|
}
|
| 9211 |
|
|
}
|
| 9212 |
|
|
|
| 9213 |
|
|
/* Allocate global sym .plt and .got entries, and space for global
|
| 9214 |
|
|
sym dynamic relocs. */
|
| 9215 |
|
|
elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
|
| 9216 |
|
|
|
| 9217 |
|
|
first_tlsld = NULL;
|
| 9218 |
|
|
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
|
| 9219 |
|
|
{
|
| 9220 |
|
|
struct got_entry *ent;
|
| 9221 |
|
|
|
| 9222 |
|
|
if (!is_ppc64_elf (ibfd))
|
| 9223 |
|
|
continue;
|
| 9224 |
|
|
|
| 9225 |
|
|
ent = ppc64_tlsld_got (ibfd);
|
| 9226 |
|
|
if (ent->got.refcount > 0)
|
| 9227 |
|
|
{
|
| 9228 |
|
|
if (!htab->do_multi_toc && first_tlsld != NULL)
|
| 9229 |
|
|
{
|
| 9230 |
|
|
ent->is_indirect = TRUE;
|
| 9231 |
|
|
ent->got.ent = first_tlsld;
|
| 9232 |
|
|
}
|
| 9233 |
|
|
else
|
| 9234 |
|
|
{
|
| 9235 |
|
|
if (first_tlsld == NULL)
|
| 9236 |
|
|
first_tlsld = ent;
|
| 9237 |
|
|
s = ppc64_elf_tdata (ibfd)->got;
|
| 9238 |
|
|
ent->got.offset = s->size;
|
| 9239 |
|
|
ent->owner = ibfd;
|
| 9240 |
|
|
s->size += 16;
|
| 9241 |
|
|
if (info->shared)
|
| 9242 |
|
|
{
|
| 9243 |
|
|
asection *srel = ppc64_elf_tdata (ibfd)->relgot;
|
| 9244 |
|
|
srel->size += sizeof (Elf64_External_Rela);
|
| 9245 |
|
|
}
|
| 9246 |
|
|
}
|
| 9247 |
|
|
}
|
| 9248 |
|
|
else
|
| 9249 |
|
|
ent->got.offset = (bfd_vma) -1;
|
| 9250 |
|
|
}
|
| 9251 |
|
|
|
| 9252 |
|
|
/* We now have determined the sizes of the various dynamic sections.
|
| 9253 |
|
|
Allocate memory for them. */
|
| 9254 |
|
|
relocs = FALSE;
|
| 9255 |
|
|
for (s = dynobj->sections; s != NULL; s = s->next)
|
| 9256 |
|
|
{
|
| 9257 |
|
|
if ((s->flags & SEC_LINKER_CREATED) == 0)
|
| 9258 |
|
|
continue;
|
| 9259 |
|
|
|
| 9260 |
|
|
if (s == htab->brlt || s == htab->relbrlt)
|
| 9261 |
|
|
/* These haven't been allocated yet; don't strip. */
|
| 9262 |
|
|
continue;
|
| 9263 |
|
|
else if (s == htab->got
|
| 9264 |
|
|
|| s == htab->plt
|
| 9265 |
|
|
|| s == htab->iplt
|
| 9266 |
|
|
|| s == htab->glink
|
| 9267 |
|
|
|| s == htab->dynbss)
|
| 9268 |
|
|
{
|
| 9269 |
|
|
/* Strip this section if we don't need it; see the
|
| 9270 |
|
|
comment below. */
|
| 9271 |
|
|
}
|
| 9272 |
161 |
khays |
else if (s == htab->glink_eh_frame)
|
| 9273 |
|
|
{
|
| 9274 |
|
|
if (!bfd_is_abs_section (s->output_section))
|
| 9275 |
|
|
/* Not sized yet. */
|
| 9276 |
|
|
continue;
|
| 9277 |
|
|
}
|
| 9278 |
14 |
khays |
else if (CONST_STRNEQ (s->name, ".rela"))
|
| 9279 |
|
|
{
|
| 9280 |
|
|
if (s->size != 0)
|
| 9281 |
|
|
{
|
| 9282 |
|
|
if (s != htab->relplt)
|
| 9283 |
|
|
relocs = TRUE;
|
| 9284 |
|
|
|
| 9285 |
|
|
/* We use the reloc_count field as a counter if we need
|
| 9286 |
|
|
to copy relocs into the output file. */
|
| 9287 |
|
|
s->reloc_count = 0;
|
| 9288 |
|
|
}
|
| 9289 |
|
|
}
|
| 9290 |
|
|
else
|
| 9291 |
|
|
{
|
| 9292 |
|
|
/* It's not one of our sections, so don't allocate space. */
|
| 9293 |
|
|
continue;
|
| 9294 |
|
|
}
|
| 9295 |
|
|
|
| 9296 |
|
|
if (s->size == 0)
|
| 9297 |
|
|
{
|
| 9298 |
|
|
/* If we don't need this section, strip it from the
|
| 9299 |
|
|
output file. This is mostly to handle .rela.bss and
|
| 9300 |
|
|
.rela.plt. We must create both sections in
|
| 9301 |
|
|
create_dynamic_sections, because they must be created
|
| 9302 |
|
|
before the linker maps input sections to output
|
| 9303 |
|
|
sections. The linker does that before
|
| 9304 |
|
|
adjust_dynamic_symbol is called, and it is that
|
| 9305 |
|
|
function which decides whether anything needs to go
|
| 9306 |
|
|
into these sections. */
|
| 9307 |
|
|
s->flags |= SEC_EXCLUDE;
|
| 9308 |
|
|
continue;
|
| 9309 |
|
|
}
|
| 9310 |
|
|
|
| 9311 |
|
|
if ((s->flags & SEC_HAS_CONTENTS) == 0)
|
| 9312 |
|
|
continue;
|
| 9313 |
|
|
|
| 9314 |
|
|
/* Allocate memory for the section contents. We use bfd_zalloc
|
| 9315 |
|
|
here in case unused entries are not reclaimed before the
|
| 9316 |
|
|
section's contents are written out. This should not happen,
|
| 9317 |
|
|
but this way if it does we get a R_PPC64_NONE reloc in .rela
|
| 9318 |
|
|
sections instead of garbage.
|
| 9319 |
|
|
We also rely on the section contents being zero when writing
|
| 9320 |
|
|
the GOT. */
|
| 9321 |
|
|
s->contents = bfd_zalloc (dynobj, s->size);
|
| 9322 |
|
|
if (s->contents == NULL)
|
| 9323 |
|
|
return FALSE;
|
| 9324 |
|
|
}
|
| 9325 |
|
|
|
| 9326 |
|
|
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
|
| 9327 |
|
|
{
|
| 9328 |
|
|
if (!is_ppc64_elf (ibfd))
|
| 9329 |
|
|
continue;
|
| 9330 |
|
|
|
| 9331 |
|
|
s = ppc64_elf_tdata (ibfd)->got;
|
| 9332 |
|
|
if (s != NULL && s != htab->got)
|
| 9333 |
|
|
{
|
| 9334 |
|
|
if (s->size == 0)
|
| 9335 |
|
|
s->flags |= SEC_EXCLUDE;
|
| 9336 |
|
|
else
|
| 9337 |
|
|
{
|
| 9338 |
|
|
s->contents = bfd_zalloc (ibfd, s->size);
|
| 9339 |
|
|
if (s->contents == NULL)
|
| 9340 |
|
|
return FALSE;
|
| 9341 |
|
|
}
|
| 9342 |
|
|
}
|
| 9343 |
|
|
s = ppc64_elf_tdata (ibfd)->relgot;
|
| 9344 |
|
|
if (s != NULL)
|
| 9345 |
|
|
{
|
| 9346 |
|
|
if (s->size == 0)
|
| 9347 |
|
|
s->flags |= SEC_EXCLUDE;
|
| 9348 |
|
|
else
|
| 9349 |
|
|
{
|
| 9350 |
|
|
s->contents = bfd_zalloc (ibfd, s->size);
|
| 9351 |
|
|
if (s->contents == NULL)
|
| 9352 |
|
|
return FALSE;
|
| 9353 |
|
|
relocs = TRUE;
|
| 9354 |
|
|
s->reloc_count = 0;
|
| 9355 |
|
|
}
|
| 9356 |
|
|
}
|
| 9357 |
|
|
}
|
| 9358 |
|
|
|
| 9359 |
|
|
if (htab->elf.dynamic_sections_created)
|
| 9360 |
|
|
{
|
| 9361 |
|
|
/* Add some entries to the .dynamic section. We fill in the
|
| 9362 |
|
|
values later, in ppc64_elf_finish_dynamic_sections, but we
|
| 9363 |
|
|
must add the entries now so that we get the correct size for
|
| 9364 |
|
|
the .dynamic section. The DT_DEBUG entry is filled in by the
|
| 9365 |
|
|
dynamic linker and used by the debugger. */
|
| 9366 |
|
|
#define add_dynamic_entry(TAG, VAL) \
|
| 9367 |
|
|
_bfd_elf_add_dynamic_entry (info, TAG, VAL)
|
| 9368 |
|
|
|
| 9369 |
|
|
if (info->executable)
|
| 9370 |
|
|
{
|
| 9371 |
|
|
if (!add_dynamic_entry (DT_DEBUG, 0))
|
| 9372 |
|
|
return FALSE;
|
| 9373 |
|
|
}
|
| 9374 |
|
|
|
| 9375 |
|
|
if (htab->plt != NULL && htab->plt->size != 0)
|
| 9376 |
|
|
{
|
| 9377 |
|
|
if (!add_dynamic_entry (DT_PLTGOT, 0)
|
| 9378 |
|
|
|| !add_dynamic_entry (DT_PLTRELSZ, 0)
|
| 9379 |
|
|
|| !add_dynamic_entry (DT_PLTREL, DT_RELA)
|
| 9380 |
|
|
|| !add_dynamic_entry (DT_JMPREL, 0)
|
| 9381 |
|
|
|| !add_dynamic_entry (DT_PPC64_GLINK, 0))
|
| 9382 |
|
|
return FALSE;
|
| 9383 |
|
|
}
|
| 9384 |
|
|
|
| 9385 |
|
|
if (NO_OPD_RELOCS)
|
| 9386 |
|
|
{
|
| 9387 |
|
|
if (!add_dynamic_entry (DT_PPC64_OPD, 0)
|
| 9388 |
|
|
|| !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
|
| 9389 |
|
|
return FALSE;
|
| 9390 |
|
|
}
|
| 9391 |
|
|
|
| 9392 |
|
|
if (!htab->no_tls_get_addr_opt
|
| 9393 |
|
|
&& htab->tls_get_addr_fd != NULL
|
| 9394 |
|
|
&& htab->tls_get_addr_fd->elf.plt.plist != NULL
|
| 9395 |
|
|
&& !add_dynamic_entry (DT_PPC64_TLSOPT, 0))
|
| 9396 |
|
|
return FALSE;
|
| 9397 |
|
|
|
| 9398 |
|
|
if (relocs)
|
| 9399 |
|
|
{
|
| 9400 |
|
|
if (!add_dynamic_entry (DT_RELA, 0)
|
| 9401 |
|
|
|| !add_dynamic_entry (DT_RELASZ, 0)
|
| 9402 |
|
|
|| !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
|
| 9403 |
|
|
return FALSE;
|
| 9404 |
|
|
|
| 9405 |
|
|
/* If any dynamic relocs apply to a read-only section,
|
| 9406 |
|
|
then we need a DT_TEXTREL entry. */
|
| 9407 |
|
|
if ((info->flags & DF_TEXTREL) == 0)
|
| 9408 |
|
|
elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
|
| 9409 |
|
|
|
| 9410 |
|
|
if ((info->flags & DF_TEXTREL) != 0)
|
| 9411 |
|
|
{
|
| 9412 |
|
|
if (!add_dynamic_entry (DT_TEXTREL, 0))
|
| 9413 |
|
|
return FALSE;
|
| 9414 |
|
|
}
|
| 9415 |
|
|
}
|
| 9416 |
|
|
}
|
| 9417 |
|
|
#undef add_dynamic_entry
|
| 9418 |
|
|
|
| 9419 |
|
|
return TRUE;
|
| 9420 |
|
|
}
|
| 9421 |
|
|
|
| 9422 |
|
|
/* Determine the type of stub needed, if any, for a call. */
|
| 9423 |
|
|
|
| 9424 |
|
|
static inline enum ppc_stub_type
|
| 9425 |
|
|
ppc_type_of_stub (asection *input_sec,
|
| 9426 |
|
|
const Elf_Internal_Rela *rel,
|
| 9427 |
|
|
struct ppc_link_hash_entry **hash,
|
| 9428 |
|
|
struct plt_entry **plt_ent,
|
| 9429 |
|
|
bfd_vma destination)
|
| 9430 |
|
|
{
|
| 9431 |
|
|
struct ppc_link_hash_entry *h = *hash;
|
| 9432 |
|
|
bfd_vma location;
|
| 9433 |
|
|
bfd_vma branch_offset;
|
| 9434 |
|
|
bfd_vma max_branch_offset;
|
| 9435 |
|
|
enum elf_ppc64_reloc_type r_type;
|
| 9436 |
|
|
|
| 9437 |
|
|
if (h != NULL)
|
| 9438 |
|
|
{
|
| 9439 |
|
|
struct plt_entry *ent;
|
| 9440 |
|
|
struct ppc_link_hash_entry *fdh = h;
|
| 9441 |
|
|
if (h->oh != NULL
|
| 9442 |
|
|
&& h->oh->is_func_descriptor)
|
| 9443 |
|
|
{
|
| 9444 |
|
|
fdh = ppc_follow_link (h->oh);
|
| 9445 |
|
|
*hash = fdh;
|
| 9446 |
|
|
}
|
| 9447 |
|
|
|
| 9448 |
|
|
for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next)
|
| 9449 |
|
|
if (ent->addend == rel->r_addend
|
| 9450 |
|
|
&& ent->plt.offset != (bfd_vma) -1)
|
| 9451 |
|
|
{
|
| 9452 |
|
|
*plt_ent = ent;
|
| 9453 |
|
|
return ppc_stub_plt_call;
|
| 9454 |
|
|
}
|
| 9455 |
|
|
|
| 9456 |
|
|
/* Here, we know we don't have a plt entry. If we don't have a
|
| 9457 |
|
|
either a defined function descriptor or a defined entry symbol
|
| 9458 |
|
|
in a regular object file, then it is pointless trying to make
|
| 9459 |
|
|
any other type of stub. */
|
| 9460 |
|
|
if (!is_static_defined (&fdh->elf)
|
| 9461 |
|
|
&& !is_static_defined (&h->elf))
|
| 9462 |
|
|
return ppc_stub_none;
|
| 9463 |
|
|
}
|
| 9464 |
|
|
else if (elf_local_got_ents (input_sec->owner) != NULL)
|
| 9465 |
|
|
{
|
| 9466 |
|
|
Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner);
|
| 9467 |
|
|
struct plt_entry **local_plt = (struct plt_entry **)
|
| 9468 |
|
|
elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info;
|
| 9469 |
|
|
unsigned long r_symndx = ELF64_R_SYM (rel->r_info);
|
| 9470 |
|
|
|
| 9471 |
|
|
if (local_plt[r_symndx] != NULL)
|
| 9472 |
|
|
{
|
| 9473 |
|
|
struct plt_entry *ent;
|
| 9474 |
|
|
|
| 9475 |
|
|
for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next)
|
| 9476 |
|
|
if (ent->addend == rel->r_addend
|
| 9477 |
|
|
&& ent->plt.offset != (bfd_vma) -1)
|
| 9478 |
|
|
{
|
| 9479 |
|
|
*plt_ent = ent;
|
| 9480 |
|
|
return ppc_stub_plt_call;
|
| 9481 |
|
|
}
|
| 9482 |
|
|
}
|
| 9483 |
|
|
}
|
| 9484 |
|
|
|
| 9485 |
|
|
/* Determine where the call point is. */
|
| 9486 |
|
|
location = (input_sec->output_offset
|
| 9487 |
|
|
+ input_sec->output_section->vma
|
| 9488 |
|
|
+ rel->r_offset);
|
| 9489 |
|
|
|
| 9490 |
|
|
branch_offset = destination - location;
|
| 9491 |
|
|
r_type = ELF64_R_TYPE (rel->r_info);
|
| 9492 |
|
|
|
| 9493 |
|
|
/* Determine if a long branch stub is needed. */
|
| 9494 |
|
|
max_branch_offset = 1 << 25;
|
| 9495 |
|
|
if (r_type != R_PPC64_REL24)
|
| 9496 |
|
|
max_branch_offset = 1 << 15;
|
| 9497 |
|
|
|
| 9498 |
|
|
if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
|
| 9499 |
|
|
/* We need a stub. Figure out whether a long_branch or plt_branch
|
| 9500 |
|
|
is needed later. */
|
| 9501 |
|
|
return ppc_stub_long_branch;
|
| 9502 |
|
|
|
| 9503 |
|
|
return ppc_stub_none;
|
| 9504 |
|
|
}
|
| 9505 |
|
|
|
| 9506 |
166 |
khays |
/* With power7 weakly ordered memory model, it is possible for ld.so
|
| 9507 |
|
|
to update a plt entry in one thread and have another thread see a
|
| 9508 |
|
|
stale zero toc entry. To avoid this we need some sort of acquire
|
| 9509 |
|
|
barrier in the call stub. One solution is to make the load of the
|
| 9510 |
|
|
toc word seem to appear to depend on the load of the function entry
|
| 9511 |
|
|
word. Another solution is to test for r2 being zero, and branch to
|
| 9512 |
|
|
the appropriate glink entry if so.
|
| 9513 |
14 |
khays |
|
| 9514 |
166 |
khays |
. fake dep barrier compare
|
| 9515 |
|
|
. ld 11,xxx(2) ld 11,xxx(2)
|
| 9516 |
|
|
. mtctr 11 mtctr 11
|
| 9517 |
|
|
. xor 11,11,11 ld 2,xxx+8(2)
|
| 9518 |
|
|
. add 2,2,11 cmpldi 2,0
|
| 9519 |
|
|
. ld 2,xxx+8(2) bnectr+
|
| 9520 |
|
|
. bctr b <glink_entry>
|
| 9521 |
|
|
|
| 9522 |
|
|
The solution involving the compare turns out to be faster, so
|
| 9523 |
|
|
that's what we use unless the branch won't reach. */
|
| 9524 |
|
|
|
| 9525 |
|
|
#define ALWAYS_USE_FAKE_DEP 0
|
| 9526 |
|
|
#define ALWAYS_EMIT_R2SAVE 0
|
| 9527 |
|
|
|
| 9528 |
14 |
khays |
#define PPC_LO(v) ((v) & 0xffff)
|
| 9529 |
|
|
#define PPC_HI(v) (((v) >> 16) & 0xffff)
|
| 9530 |
|
|
#define PPC_HA(v) PPC_HI ((v) + 0x8000)
|
| 9531 |
|
|
|
| 9532 |
166 |
khays |
static inline unsigned int
|
| 9533 |
|
|
plt_stub_size (struct ppc_link_hash_table *htab,
|
| 9534 |
|
|
struct ppc_stub_hash_entry *stub_entry,
|
| 9535 |
|
|
bfd_vma off)
|
| 9536 |
|
|
{
|
| 9537 |
|
|
unsigned size = PLT_CALL_STUB_SIZE;
|
| 9538 |
|
|
|
| 9539 |
|
|
if (!(ALWAYS_EMIT_R2SAVE
|
| 9540 |
|
|
|| stub_entry->stub_type == ppc_stub_plt_call_r2save))
|
| 9541 |
|
|
size -= 4;
|
| 9542 |
|
|
if (!htab->plt_static_chain)
|
| 9543 |
|
|
size -= 4;
|
| 9544 |
|
|
if (htab->plt_thread_safe)
|
| 9545 |
|
|
size += 8;
|
| 9546 |
|
|
if (PPC_HA (off) == 0)
|
| 9547 |
|
|
size -= 4;
|
| 9548 |
|
|
if (PPC_HA (off + 8 + 8 * htab->plt_static_chain) != PPC_HA (off))
|
| 9549 |
|
|
size += 4;
|
| 9550 |
|
|
if (stub_entry->h != NULL
|
| 9551 |
|
|
&& (stub_entry->h == htab->tls_get_addr_fd
|
| 9552 |
|
|
|| stub_entry->h == htab->tls_get_addr)
|
| 9553 |
|
|
&& !htab->no_tls_get_addr_opt)
|
| 9554 |
|
|
size += 13 * 4;
|
| 9555 |
|
|
return size;
|
| 9556 |
|
|
}
|
| 9557 |
|
|
|
| 9558 |
|
|
/* If this stub would cross fewer 2**plt_stub_align boundaries if we align,
|
| 9559 |
|
|
then return the padding needed to do so. */
|
| 9560 |
|
|
static inline unsigned int
|
| 9561 |
|
|
plt_stub_pad (struct ppc_link_hash_table *htab,
|
| 9562 |
|
|
struct ppc_stub_hash_entry *stub_entry,
|
| 9563 |
|
|
bfd_vma plt_off)
|
| 9564 |
|
|
{
|
| 9565 |
|
|
int stub_align = 1 << htab->plt_stub_align;
|
| 9566 |
|
|
unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off);
|
| 9567 |
|
|
bfd_vma stub_off = stub_entry->stub_sec->size;
|
| 9568 |
|
|
|
| 9569 |
|
|
if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align)
|
| 9570 |
|
|
> (stub_size & -stub_align))
|
| 9571 |
|
|
return stub_align - (stub_off & (stub_align - 1));
|
| 9572 |
|
|
return 0;
|
| 9573 |
|
|
}
|
| 9574 |
|
|
|
| 9575 |
|
|
/* Build a .plt call stub. */
|
| 9576 |
|
|
|
| 9577 |
|
|
static inline bfd_byte *
|
| 9578 |
|
|
build_plt_stub (struct ppc_link_hash_table *htab,
|
| 9579 |
|
|
struct ppc_stub_hash_entry *stub_entry,
|
| 9580 |
|
|
bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
|
| 9581 |
|
|
{
|
| 9582 |
|
|
bfd *obfd = htab->stub_bfd;
|
| 9583 |
|
|
bfd_boolean plt_static_chain = htab->plt_static_chain;
|
| 9584 |
|
|
bfd_boolean plt_thread_safe = htab->plt_thread_safe;
|
| 9585 |
|
|
bfd_boolean use_fake_dep = plt_thread_safe;
|
| 9586 |
|
|
bfd_vma cmp_branch_off = 0;
|
| 9587 |
|
|
|
| 9588 |
|
|
if (!ALWAYS_USE_FAKE_DEP
|
| 9589 |
|
|
&& plt_thread_safe
|
| 9590 |
|
|
&& !(stub_entry->h != NULL
|
| 9591 |
|
|
&& (stub_entry->h == htab->tls_get_addr_fd
|
| 9592 |
|
|
|| stub_entry->h == htab->tls_get_addr)
|
| 9593 |
|
|
&& !htab->no_tls_get_addr_opt))
|
| 9594 |
|
|
{
|
| 9595 |
|
|
bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1;
|
| 9596 |
|
|
bfd_vma pltindex = (pltoff - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE;
|
| 9597 |
|
|
bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8;
|
| 9598 |
|
|
bfd_vma to, from;
|
| 9599 |
|
|
|
| 9600 |
|
|
if (pltindex > 32767)
|
| 9601 |
|
|
glinkoff += (pltindex - 32767) * 4;
|
| 9602 |
|
|
to = (glinkoff
|
| 9603 |
|
|
+ htab->glink->output_offset
|
| 9604 |
|
|
+ htab->glink->output_section->vma);
|
| 9605 |
|
|
from = (p - stub_entry->stub_sec->contents
|
| 9606 |
|
|
+ 4 * (ALWAYS_EMIT_R2SAVE
|
| 9607 |
|
|
|| stub_entry->stub_type == ppc_stub_plt_call_r2save)
|
| 9608 |
|
|
+ 4 * (PPC_HA (offset) != 0)
|
| 9609 |
|
|
+ 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain)
|
| 9610 |
|
|
!= PPC_HA (offset))
|
| 9611 |
|
|
+ 4 * (plt_static_chain != 0)
|
| 9612 |
|
|
+ 20
|
| 9613 |
|
|
+ stub_entry->stub_sec->output_offset
|
| 9614 |
|
|
+ stub_entry->stub_sec->output_section->vma);
|
| 9615 |
|
|
cmp_branch_off = to - from;
|
| 9616 |
|
|
use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26);
|
| 9617 |
|
|
}
|
| 9618 |
|
|
|
| 9619 |
14 |
khays |
if (PPC_HA (offset) != 0)
|
| 9620 |
|
|
{
|
| 9621 |
|
|
if (r != NULL)
|
| 9622 |
|
|
{
|
| 9623 |
166 |
khays |
if (ALWAYS_EMIT_R2SAVE
|
| 9624 |
|
|
|| stub_entry->stub_type == ppc_stub_plt_call_r2save)
|
| 9625 |
|
|
r[0].r_offset += 4;
|
| 9626 |
14 |
khays |
r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
|
| 9627 |
163 |
khays |
r[1].r_offset = r[0].r_offset + 4;
|
| 9628 |
14 |
khays |
r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
|
| 9629 |
|
|
r[1].r_addend = r[0].r_addend;
|
| 9630 |
161 |
khays |
if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
|
| 9631 |
14 |
khays |
{
|
| 9632 |
|
|
r[2].r_offset = r[1].r_offset + 4;
|
| 9633 |
|
|
r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO);
|
| 9634 |
|
|
r[2].r_addend = r[0].r_addend;
|
| 9635 |
|
|
}
|
| 9636 |
|
|
else
|
| 9637 |
|
|
{
|
| 9638 |
166 |
khays |
r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep;
|
| 9639 |
14 |
khays |
r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
|
| 9640 |
|
|
r[2].r_addend = r[0].r_addend + 8;
|
| 9641 |
161 |
khays |
if (plt_static_chain)
|
| 9642 |
|
|
{
|
| 9643 |
|
|
r[3].r_offset = r[2].r_offset + 4;
|
| 9644 |
|
|
r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
|
| 9645 |
|
|
r[3].r_addend = r[0].r_addend + 16;
|
| 9646 |
|
|
}
|
| 9647 |
14 |
khays |
}
|
| 9648 |
|
|
}
|
| 9649 |
166 |
khays |
if (ALWAYS_EMIT_R2SAVE
|
| 9650 |
|
|
|| stub_entry->stub_type == ppc_stub_plt_call_r2save)
|
| 9651 |
|
|
bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
|
| 9652 |
14 |
khays |
bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
|
| 9653 |
|
|
bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
|
| 9654 |
161 |
khays |
if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
|
| 9655 |
14 |
khays |
{
|
| 9656 |
|
|
bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4;
|
| 9657 |
|
|
offset = 0;
|
| 9658 |
|
|
}
|
| 9659 |
|
|
bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
|
| 9660 |
166 |
khays |
if (use_fake_dep)
|
| 9661 |
|
|
{
|
| 9662 |
|
|
bfd_put_32 (obfd, XOR_R11_R11_R11, p), p += 4;
|
| 9663 |
|
|
bfd_put_32 (obfd, ADD_R12_R12_R11, p), p += 4;
|
| 9664 |
|
|
}
|
| 9665 |
14 |
khays |
bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4;
|
| 9666 |
161 |
khays |
if (plt_static_chain)
|
| 9667 |
|
|
bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4;
|
| 9668 |
14 |
khays |
}
|
| 9669 |
|
|
else
|
| 9670 |
|
|
{
|
| 9671 |
|
|
if (r != NULL)
|
| 9672 |
|
|
{
|
| 9673 |
166 |
khays |
if (ALWAYS_EMIT_R2SAVE
|
| 9674 |
|
|
|| stub_entry->stub_type == ppc_stub_plt_call_r2save)
|
| 9675 |
|
|
r[0].r_offset += 4;
|
| 9676 |
14 |
khays |
r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
|
| 9677 |
161 |
khays |
if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
|
| 9678 |
14 |
khays |
{
|
| 9679 |
|
|
r[1].r_offset = r[0].r_offset + 4;
|
| 9680 |
|
|
r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16);
|
| 9681 |
|
|
r[1].r_addend = r[0].r_addend;
|
| 9682 |
|
|
}
|
| 9683 |
|
|
else
|
| 9684 |
|
|
{
|
| 9685 |
166 |
khays |
r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep;
|
| 9686 |
14 |
khays |
r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
|
| 9687 |
161 |
khays |
r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain;
|
| 9688 |
|
|
if (plt_static_chain)
|
| 9689 |
|
|
{
|
| 9690 |
|
|
r[2].r_offset = r[1].r_offset + 4;
|
| 9691 |
|
|
r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
|
| 9692 |
|
|
r[2].r_addend = r[0].r_addend + 8;
|
| 9693 |
|
|
}
|
| 9694 |
14 |
khays |
}
|
| 9695 |
|
|
}
|
| 9696 |
166 |
khays |
if (ALWAYS_EMIT_R2SAVE
|
| 9697 |
|
|
|| stub_entry->stub_type == ppc_stub_plt_call_r2save)
|
| 9698 |
|
|
bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
|
| 9699 |
14 |
khays |
bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4;
|
| 9700 |
161 |
khays |
if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset))
|
| 9701 |
14 |
khays |
{
|
| 9702 |
|
|
bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4;
|
| 9703 |
|
|
offset = 0;
|
| 9704 |
|
|
}
|
| 9705 |
|
|
bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
|
| 9706 |
166 |
khays |
if (use_fake_dep)
|
| 9707 |
|
|
{
|
| 9708 |
|
|
bfd_put_32 (obfd, XOR_R11_R11_R11, p), p += 4;
|
| 9709 |
|
|
bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4;
|
| 9710 |
|
|
}
|
| 9711 |
161 |
khays |
if (plt_static_chain)
|
| 9712 |
|
|
bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4;
|
| 9713 |
14 |
khays |
bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4;
|
| 9714 |
|
|
}
|
| 9715 |
166 |
khays |
if (plt_thread_safe && !use_fake_dep)
|
| 9716 |
|
|
{
|
| 9717 |
|
|
bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4;
|
| 9718 |
|
|
bfd_put_32 (obfd, BNECTR_P4, p), p += 4;
|
| 9719 |
|
|
bfd_put_32 (obfd, B_DOT + cmp_branch_off, p), p += 4;
|
| 9720 |
|
|
}
|
| 9721 |
|
|
else
|
| 9722 |
|
|
bfd_put_32 (obfd, BCTR, p), p += 4;
|
| 9723 |
14 |
khays |
return p;
|
| 9724 |
|
|
}
|
| 9725 |
|
|
|
| 9726 |
|
|
/* Build a special .plt call stub for __tls_get_addr. */
|
| 9727 |
|
|
|
| 9728 |
|
|
#define LD_R11_0R3 0xe9630000
|
| 9729 |
|
|
#define LD_R12_0R3 0xe9830000
|
| 9730 |
|
|
#define MR_R0_R3 0x7c601b78
|
| 9731 |
|
|
#define CMPDI_R11_0 0x2c2b0000
|
| 9732 |
|
|
#define ADD_R3_R12_R13 0x7c6c6a14
|
| 9733 |
|
|
#define BEQLR 0x4d820020
|
| 9734 |
|
|
#define MR_R3_R0 0x7c030378
|
| 9735 |
|
|
#define MFLR_R11 0x7d6802a6
|
| 9736 |
|
|
#define STD_R11_0R1 0xf9610000
|
| 9737 |
|
|
#define BCTRL 0x4e800421
|
| 9738 |
|
|
#define LD_R11_0R1 0xe9610000
|
| 9739 |
|
|
#define LD_R2_0R1 0xe8410000
|
| 9740 |
|
|
#define MTLR_R11 0x7d6803a6
|
| 9741 |
|
|
|
| 9742 |
|
|
static inline bfd_byte *
|
| 9743 |
166 |
khays |
build_tls_get_addr_stub (struct ppc_link_hash_table *htab,
|
| 9744 |
|
|
struct ppc_stub_hash_entry *stub_entry,
|
| 9745 |
|
|
bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r)
|
| 9746 |
14 |
khays |
{
|
| 9747 |
166 |
khays |
bfd *obfd = htab->stub_bfd;
|
| 9748 |
|
|
|
| 9749 |
14 |
khays |
bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4;
|
| 9750 |
|
|
bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4;
|
| 9751 |
|
|
bfd_put_32 (obfd, MR_R0_R3, p), p += 4;
|
| 9752 |
|
|
bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4;
|
| 9753 |
|
|
bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4;
|
| 9754 |
|
|
bfd_put_32 (obfd, BEQLR, p), p += 4;
|
| 9755 |
|
|
bfd_put_32 (obfd, MR_R3_R0, p), p += 4;
|
| 9756 |
|
|
bfd_put_32 (obfd, MFLR_R11, p), p += 4;
|
| 9757 |
|
|
bfd_put_32 (obfd, STD_R11_0R1 + 32, p), p += 4;
|
| 9758 |
|
|
|
| 9759 |
|
|
if (r != NULL)
|
| 9760 |
|
|
r[0].r_offset += 9 * 4;
|
| 9761 |
166 |
khays |
p = build_plt_stub (htab, stub_entry, p, offset, r);
|
| 9762 |
14 |
khays |
bfd_put_32 (obfd, BCTRL, p - 4);
|
| 9763 |
|
|
|
| 9764 |
|
|
bfd_put_32 (obfd, LD_R11_0R1 + 32, p), p += 4;
|
| 9765 |
|
|
bfd_put_32 (obfd, LD_R2_0R1 + 40, p), p += 4;
|
| 9766 |
|
|
bfd_put_32 (obfd, MTLR_R11, p), p += 4;
|
| 9767 |
|
|
bfd_put_32 (obfd, BLR, p), p += 4;
|
| 9768 |
|
|
|
| 9769 |
|
|
return p;
|
| 9770 |
|
|
}
|
| 9771 |
|
|
|
| 9772 |
|
|
static Elf_Internal_Rela *
|
| 9773 |
|
|
get_relocs (asection *sec, int count)
|
| 9774 |
|
|
{
|
| 9775 |
|
|
Elf_Internal_Rela *relocs;
|
| 9776 |
|
|
struct bfd_elf_section_data *elfsec_data;
|
| 9777 |
|
|
|
| 9778 |
|
|
elfsec_data = elf_section_data (sec);
|
| 9779 |
|
|
relocs = elfsec_data->relocs;
|
| 9780 |
|
|
if (relocs == NULL)
|
| 9781 |
|
|
{
|
| 9782 |
|
|
bfd_size_type relsize;
|
| 9783 |
|
|
relsize = sec->reloc_count * sizeof (*relocs);
|
| 9784 |
|
|
relocs = bfd_alloc (sec->owner, relsize);
|
| 9785 |
|
|
if (relocs == NULL)
|
| 9786 |
|
|
return NULL;
|
| 9787 |
|
|
elfsec_data->relocs = relocs;
|
| 9788 |
|
|
elfsec_data->rela.hdr = bfd_zalloc (sec->owner,
|
| 9789 |
|
|
sizeof (Elf_Internal_Shdr));
|
| 9790 |
|
|
if (elfsec_data->rela.hdr == NULL)
|
| 9791 |
|
|
return NULL;
|
| 9792 |
|
|
elfsec_data->rela.hdr->sh_size = (sec->reloc_count
|
| 9793 |
|
|
* sizeof (Elf64_External_Rela));
|
| 9794 |
|
|
elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela);
|
| 9795 |
|
|
sec->reloc_count = 0;
|
| 9796 |
|
|
}
|
| 9797 |
|
|
relocs += sec->reloc_count;
|
| 9798 |
|
|
sec->reloc_count += count;
|
| 9799 |
|
|
return relocs;
|
| 9800 |
|
|
}
|
| 9801 |
|
|
|
| 9802 |
|
|
static bfd_vma
|
| 9803 |
|
|
get_r2off (struct bfd_link_info *info,
|
| 9804 |
|
|
struct ppc_stub_hash_entry *stub_entry)
|
| 9805 |
|
|
{
|
| 9806 |
|
|
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
| 9807 |
|
|
bfd_vma r2off = htab->stub_group[stub_entry->target_section->id].toc_off;
|
| 9808 |
|
|
|
| 9809 |
|
|
if (r2off == 0)
|
| 9810 |
|
|
{
|
| 9811 |
|
|
/* Support linking -R objects. Get the toc pointer from the
|
| 9812 |
|
|
opd entry. */
|
| 9813 |
|
|
char buf[8];
|
| 9814 |
|
|
asection *opd = stub_entry->h->elf.root.u.def.section;
|
| 9815 |
|
|
bfd_vma opd_off = stub_entry->h->elf.root.u.def.value;
|
| 9816 |
|
|
|
| 9817 |
|
|
if (strcmp (opd->name, ".opd") != 0
|
| 9818 |
|
|
|| opd->reloc_count != 0)
|
| 9819 |
|
|
{
|
| 9820 |
161 |
khays |
info->callbacks->einfo (_("%P: cannot find opd entry toc for %s\n"),
|
| 9821 |
14 |
khays |
stub_entry->h->elf.root.root.string);
|
| 9822 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 9823 |
|
|
return 0;
|
| 9824 |
|
|
}
|
| 9825 |
|
|
if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8))
|
| 9826 |
|
|
return 0;
|
| 9827 |
|
|
r2off = bfd_get_64 (opd->owner, buf);
|
| 9828 |
|
|
r2off -= elf_gp (info->output_bfd);
|
| 9829 |
|
|
}
|
| 9830 |
|
|
r2off -= htab->stub_group[stub_entry->id_sec->id].toc_off;
|
| 9831 |
|
|
return r2off;
|
| 9832 |
|
|
}
|
| 9833 |
|
|
|
| 9834 |
|
|
static bfd_boolean
|
| 9835 |
|
|
ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
|
| 9836 |
|
|
{
|
| 9837 |
|
|
struct ppc_stub_hash_entry *stub_entry;
|
| 9838 |
|
|
struct ppc_branch_hash_entry *br_entry;
|
| 9839 |
|
|
struct bfd_link_info *info;
|
| 9840 |
|
|
struct ppc_link_hash_table *htab;
|
| 9841 |
|
|
bfd_byte *loc;
|
| 9842 |
|
|
bfd_byte *p;
|
| 9843 |
|
|
bfd_vma dest, off;
|
| 9844 |
|
|
int size;
|
| 9845 |
|
|
Elf_Internal_Rela *r;
|
| 9846 |
|
|
asection *plt;
|
| 9847 |
|
|
|
| 9848 |
|
|
/* Massage our args to the form they really have. */
|
| 9849 |
|
|
stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
|
| 9850 |
|
|
info = in_arg;
|
| 9851 |
|
|
|
| 9852 |
|
|
htab = ppc_hash_table (info);
|
| 9853 |
|
|
if (htab == NULL)
|
| 9854 |
|
|
return FALSE;
|
| 9855 |
|
|
|
| 9856 |
|
|
/* Make a note of the offset within the stubs for this entry. */
|
| 9857 |
|
|
stub_entry->stub_offset = stub_entry->stub_sec->size;
|
| 9858 |
|
|
loc = stub_entry->stub_sec->contents + stub_entry->stub_offset;
|
| 9859 |
|
|
|
| 9860 |
|
|
htab->stub_count[stub_entry->stub_type - 1] += 1;
|
| 9861 |
|
|
switch (stub_entry->stub_type)
|
| 9862 |
|
|
{
|
| 9863 |
|
|
case ppc_stub_long_branch:
|
| 9864 |
|
|
case ppc_stub_long_branch_r2off:
|
| 9865 |
|
|
/* Branches are relative. This is where we are going to. */
|
| 9866 |
|
|
off = dest = (stub_entry->target_value
|
| 9867 |
|
|
+ stub_entry->target_section->output_offset
|
| 9868 |
|
|
+ stub_entry->target_section->output_section->vma);
|
| 9869 |
|
|
|
| 9870 |
|
|
/* And this is where we are coming from. */
|
| 9871 |
|
|
off -= (stub_entry->stub_offset
|
| 9872 |
|
|
+ stub_entry->stub_sec->output_offset
|
| 9873 |
|
|
+ stub_entry->stub_sec->output_section->vma);
|
| 9874 |
|
|
|
| 9875 |
|
|
size = 4;
|
| 9876 |
|
|
if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
|
| 9877 |
|
|
{
|
| 9878 |
|
|
bfd_vma r2off = get_r2off (info, stub_entry);
|
| 9879 |
|
|
|
| 9880 |
|
|
if (r2off == 0)
|
| 9881 |
|
|
{
|
| 9882 |
|
|
htab->stub_error = TRUE;
|
| 9883 |
|
|
return FALSE;
|
| 9884 |
|
|
}
|
| 9885 |
|
|
bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
|
| 9886 |
|
|
loc += 4;
|
| 9887 |
|
|
size = 12;
|
| 9888 |
|
|
if (PPC_HA (r2off) != 0)
|
| 9889 |
|
|
{
|
| 9890 |
|
|
size = 16;
|
| 9891 |
|
|
bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
|
| 9892 |
|
|
loc += 4;
|
| 9893 |
|
|
}
|
| 9894 |
|
|
bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
|
| 9895 |
|
|
loc += 4;
|
| 9896 |
|
|
off -= size - 4;
|
| 9897 |
|
|
}
|
| 9898 |
|
|
bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc);
|
| 9899 |
|
|
|
| 9900 |
|
|
if (off + (1 << 25) >= (bfd_vma) (1 << 26))
|
| 9901 |
|
|
{
|
| 9902 |
161 |
khays |
info->callbacks->einfo (_("%P: long branch stub `%s' offset overflow\n"),
|
| 9903 |
14 |
khays |
stub_entry->root.string);
|
| 9904 |
|
|
htab->stub_error = TRUE;
|
| 9905 |
|
|
return FALSE;
|
| 9906 |
|
|
}
|
| 9907 |
|
|
|
| 9908 |
|
|
if (info->emitrelocations)
|
| 9909 |
|
|
{
|
| 9910 |
|
|
r = get_relocs (stub_entry->stub_sec, 1);
|
| 9911 |
|
|
if (r == NULL)
|
| 9912 |
|
|
return FALSE;
|
| 9913 |
|
|
r->r_offset = loc - stub_entry->stub_sec->contents;
|
| 9914 |
|
|
r->r_info = ELF64_R_INFO (0, R_PPC64_REL24);
|
| 9915 |
|
|
r->r_addend = dest;
|
| 9916 |
|
|
if (stub_entry->h != NULL)
|
| 9917 |
|
|
{
|
| 9918 |
|
|
struct elf_link_hash_entry **hashes;
|
| 9919 |
|
|
unsigned long symndx;
|
| 9920 |
|
|
struct ppc_link_hash_entry *h;
|
| 9921 |
|
|
|
| 9922 |
|
|
hashes = elf_sym_hashes (htab->stub_bfd);
|
| 9923 |
|
|
if (hashes == NULL)
|
| 9924 |
|
|
{
|
| 9925 |
|
|
bfd_size_type hsize;
|
| 9926 |
|
|
|
| 9927 |
|
|
hsize = (htab->stub_globals + 1) * sizeof (*hashes);
|
| 9928 |
|
|
hashes = bfd_zalloc (htab->stub_bfd, hsize);
|
| 9929 |
|
|
if (hashes == NULL)
|
| 9930 |
|
|
return FALSE;
|
| 9931 |
|
|
elf_sym_hashes (htab->stub_bfd) = hashes;
|
| 9932 |
|
|
htab->stub_globals = 1;
|
| 9933 |
|
|
}
|
| 9934 |
|
|
symndx = htab->stub_globals++;
|
| 9935 |
|
|
h = stub_entry->h;
|
| 9936 |
|
|
hashes[symndx] = &h->elf;
|
| 9937 |
|
|
r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24);
|
| 9938 |
|
|
if (h->oh != NULL && h->oh->is_func)
|
| 9939 |
|
|
h = ppc_follow_link (h->oh);
|
| 9940 |
|
|
if (h->elf.root.u.def.section != stub_entry->target_section)
|
| 9941 |
|
|
/* H is an opd symbol. The addend must be zero. */
|
| 9942 |
|
|
r->r_addend = 0;
|
| 9943 |
|
|
else
|
| 9944 |
|
|
{
|
| 9945 |
|
|
off = (h->elf.root.u.def.value
|
| 9946 |
|
|
+ h->elf.root.u.def.section->output_offset
|
| 9947 |
|
|
+ h->elf.root.u.def.section->output_section->vma);
|
| 9948 |
|
|
r->r_addend -= off;
|
| 9949 |
|
|
}
|
| 9950 |
|
|
}
|
| 9951 |
|
|
}
|
| 9952 |
|
|
break;
|
| 9953 |
|
|
|
| 9954 |
|
|
case ppc_stub_plt_branch:
|
| 9955 |
|
|
case ppc_stub_plt_branch_r2off:
|
| 9956 |
|
|
br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
|
| 9957 |
|
|
stub_entry->root.string + 9,
|
| 9958 |
|
|
FALSE, FALSE);
|
| 9959 |
|
|
if (br_entry == NULL)
|
| 9960 |
|
|
{
|
| 9961 |
161 |
khays |
info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"),
|
| 9962 |
14 |
khays |
stub_entry->root.string);
|
| 9963 |
|
|
htab->stub_error = TRUE;
|
| 9964 |
|
|
return FALSE;
|
| 9965 |
|
|
}
|
| 9966 |
|
|
|
| 9967 |
|
|
dest = (stub_entry->target_value
|
| 9968 |
|
|
+ stub_entry->target_section->output_offset
|
| 9969 |
|
|
+ stub_entry->target_section->output_section->vma);
|
| 9970 |
|
|
|
| 9971 |
|
|
bfd_put_64 (htab->brlt->owner, dest,
|
| 9972 |
|
|
htab->brlt->contents + br_entry->offset);
|
| 9973 |
|
|
|
| 9974 |
|
|
if (br_entry->iter == htab->stub_iteration)
|
| 9975 |
|
|
{
|
| 9976 |
|
|
br_entry->iter = 0;
|
| 9977 |
|
|
|
| 9978 |
|
|
if (htab->relbrlt != NULL)
|
| 9979 |
|
|
{
|
| 9980 |
|
|
/* Create a reloc for the branch lookup table entry. */
|
| 9981 |
|
|
Elf_Internal_Rela rela;
|
| 9982 |
|
|
bfd_byte *rl;
|
| 9983 |
|
|
|
| 9984 |
|
|
rela.r_offset = (br_entry->offset
|
| 9985 |
|
|
+ htab->brlt->output_offset
|
| 9986 |
|
|
+ htab->brlt->output_section->vma);
|
| 9987 |
|
|
rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
|
| 9988 |
|
|
rela.r_addend = dest;
|
| 9989 |
|
|
|
| 9990 |
|
|
rl = htab->relbrlt->contents;
|
| 9991 |
|
|
rl += (htab->relbrlt->reloc_count++
|
| 9992 |
|
|
* sizeof (Elf64_External_Rela));
|
| 9993 |
|
|
bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl);
|
| 9994 |
|
|
}
|
| 9995 |
|
|
else if (info->emitrelocations)
|
| 9996 |
|
|
{
|
| 9997 |
|
|
r = get_relocs (htab->brlt, 1);
|
| 9998 |
|
|
if (r == NULL)
|
| 9999 |
|
|
return FALSE;
|
| 10000 |
|
|
/* brlt, being SEC_LINKER_CREATED does not go through the
|
| 10001 |
|
|
normal reloc processing. Symbols and offsets are not
|
| 10002 |
|
|
translated from input file to output file form, so
|
| 10003 |
|
|
set up the offset per the output file. */
|
| 10004 |
|
|
r->r_offset = (br_entry->offset
|
| 10005 |
|
|
+ htab->brlt->output_offset
|
| 10006 |
|
|
+ htab->brlt->output_section->vma);
|
| 10007 |
|
|
r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
|
| 10008 |
|
|
r->r_addend = dest;
|
| 10009 |
|
|
}
|
| 10010 |
|
|
}
|
| 10011 |
|
|
|
| 10012 |
|
|
dest = (br_entry->offset
|
| 10013 |
|
|
+ htab->brlt->output_offset
|
| 10014 |
|
|
+ htab->brlt->output_section->vma);
|
| 10015 |
|
|
|
| 10016 |
|
|
off = (dest
|
| 10017 |
|
|
- elf_gp (htab->brlt->output_section->owner)
|
| 10018 |
|
|
- htab->stub_group[stub_entry->id_sec->id].toc_off);
|
| 10019 |
|
|
|
| 10020 |
|
|
if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
|
| 10021 |
|
|
{
|
| 10022 |
|
|
info->callbacks->einfo
|
| 10023 |
161 |
khays |
(_("%P: linkage table error against `%s'\n"),
|
| 10024 |
14 |
khays |
stub_entry->root.string);
|
| 10025 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 10026 |
|
|
htab->stub_error = TRUE;
|
| 10027 |
|
|
return FALSE;
|
| 10028 |
|
|
}
|
| 10029 |
|
|
|
| 10030 |
|
|
if (info->emitrelocations)
|
| 10031 |
|
|
{
|
| 10032 |
|
|
r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0));
|
| 10033 |
|
|
if (r == NULL)
|
| 10034 |
|
|
return FALSE;
|
| 10035 |
|
|
r[0].r_offset = loc - stub_entry->stub_sec->contents;
|
| 10036 |
|
|
if (bfd_big_endian (info->output_bfd))
|
| 10037 |
|
|
r[0].r_offset += 2;
|
| 10038 |
|
|
if (stub_entry->stub_type == ppc_stub_plt_branch_r2off)
|
| 10039 |
|
|
r[0].r_offset += 4;
|
| 10040 |
|
|
r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS);
|
| 10041 |
|
|
r[0].r_addend = dest;
|
| 10042 |
|
|
if (PPC_HA (off) != 0)
|
| 10043 |
|
|
{
|
| 10044 |
|
|
r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA);
|
| 10045 |
|
|
r[1].r_offset = r[0].r_offset + 4;
|
| 10046 |
|
|
r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS);
|
| 10047 |
|
|
r[1].r_addend = r[0].r_addend;
|
| 10048 |
|
|
}
|
| 10049 |
|
|
}
|
| 10050 |
|
|
|
| 10051 |
|
|
if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
|
| 10052 |
|
|
{
|
| 10053 |
|
|
if (PPC_HA (off) != 0)
|
| 10054 |
|
|
{
|
| 10055 |
|
|
size = 16;
|
| 10056 |
|
|
bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
|
| 10057 |
|
|
loc += 4;
|
| 10058 |
|
|
bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
|
| 10059 |
|
|
}
|
| 10060 |
|
|
else
|
| 10061 |
|
|
{
|
| 10062 |
|
|
size = 12;
|
| 10063 |
|
|
bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
|
| 10064 |
|
|
}
|
| 10065 |
|
|
}
|
| 10066 |
|
|
else
|
| 10067 |
|
|
{
|
| 10068 |
|
|
bfd_vma r2off = get_r2off (info, stub_entry);
|
| 10069 |
|
|
|
| 10070 |
|
|
if (r2off == 0)
|
| 10071 |
|
|
{
|
| 10072 |
|
|
htab->stub_error = TRUE;
|
| 10073 |
|
|
return FALSE;
|
| 10074 |
|
|
}
|
| 10075 |
|
|
|
| 10076 |
|
|
bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc);
|
| 10077 |
|
|
loc += 4;
|
| 10078 |
|
|
size = 20;
|
| 10079 |
|
|
if (PPC_HA (off) != 0)
|
| 10080 |
|
|
{
|
| 10081 |
|
|
size += 4;
|
| 10082 |
|
|
bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc);
|
| 10083 |
|
|
loc += 4;
|
| 10084 |
|
|
bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc);
|
| 10085 |
|
|
loc += 4;
|
| 10086 |
|
|
}
|
| 10087 |
|
|
else
|
| 10088 |
|
|
{
|
| 10089 |
|
|
bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc);
|
| 10090 |
|
|
loc += 4;
|
| 10091 |
|
|
}
|
| 10092 |
|
|
|
| 10093 |
|
|
if (PPC_HA (r2off) != 0)
|
| 10094 |
|
|
{
|
| 10095 |
|
|
size += 4;
|
| 10096 |
|
|
bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc);
|
| 10097 |
|
|
loc += 4;
|
| 10098 |
|
|
}
|
| 10099 |
|
|
bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc);
|
| 10100 |
|
|
}
|
| 10101 |
|
|
loc += 4;
|
| 10102 |
|
|
bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc);
|
| 10103 |
|
|
loc += 4;
|
| 10104 |
|
|
bfd_put_32 (htab->stub_bfd, BCTR, loc);
|
| 10105 |
|
|
break;
|
| 10106 |
|
|
|
| 10107 |
|
|
case ppc_stub_plt_call:
|
| 10108 |
166 |
khays |
case ppc_stub_plt_call_r2save:
|
| 10109 |
14 |
khays |
if (stub_entry->h != NULL
|
| 10110 |
|
|
&& stub_entry->h->is_func_descriptor
|
| 10111 |
|
|
&& stub_entry->h->oh != NULL)
|
| 10112 |
|
|
{
|
| 10113 |
|
|
struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh);
|
| 10114 |
|
|
|
| 10115 |
|
|
/* If the old-ABI "dot-symbol" is undefined make it weak so
|
| 10116 |
|
|
we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
|
| 10117 |
|
|
FIXME: We used to define the symbol on one of the call
|
| 10118 |
|
|
stubs instead, which is why we test symbol section id
|
| 10119 |
|
|
against htab->top_id in various places. Likely all
|
| 10120 |
|
|
these checks could now disappear. */
|
| 10121 |
|
|
if (fh->elf.root.type == bfd_link_hash_undefined)
|
| 10122 |
|
|
fh->elf.root.type = bfd_link_hash_undefweak;
|
| 10123 |
|
|
/* Stop undo_symbol_twiddle changing it back to undefined. */
|
| 10124 |
|
|
fh->was_undefined = 0;
|
| 10125 |
|
|
}
|
| 10126 |
|
|
|
| 10127 |
|
|
/* Now build the stub. */
|
| 10128 |
|
|
dest = stub_entry->plt_ent->plt.offset & ~1;
|
| 10129 |
|
|
if (dest >= (bfd_vma) -2)
|
| 10130 |
|
|
abort ();
|
| 10131 |
|
|
|
| 10132 |
|
|
plt = htab->plt;
|
| 10133 |
|
|
if (!htab->elf.dynamic_sections_created
|
| 10134 |
|
|
|| stub_entry->h == NULL
|
| 10135 |
|
|
|| stub_entry->h->elf.dynindx == -1)
|
| 10136 |
|
|
plt = htab->iplt;
|
| 10137 |
|
|
|
| 10138 |
|
|
dest += plt->output_offset + plt->output_section->vma;
|
| 10139 |
|
|
|
| 10140 |
|
|
if (stub_entry->h == NULL
|
| 10141 |
|
|
&& (stub_entry->plt_ent->plt.offset & 1) == 0)
|
| 10142 |
|
|
{
|
| 10143 |
|
|
Elf_Internal_Rela rela;
|
| 10144 |
|
|
bfd_byte *rl;
|
| 10145 |
|
|
|
| 10146 |
|
|
rela.r_offset = dest;
|
| 10147 |
|
|
rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
|
| 10148 |
|
|
rela.r_addend = (stub_entry->target_value
|
| 10149 |
|
|
+ stub_entry->target_section->output_offset
|
| 10150 |
|
|
+ stub_entry->target_section->output_section->vma);
|
| 10151 |
|
|
|
| 10152 |
|
|
rl = (htab->reliplt->contents
|
| 10153 |
|
|
+ (htab->reliplt->reloc_count++
|
| 10154 |
|
|
* sizeof (Elf64_External_Rela)));
|
| 10155 |
|
|
bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl);
|
| 10156 |
|
|
stub_entry->plt_ent->plt.offset |= 1;
|
| 10157 |
|
|
}
|
| 10158 |
|
|
|
| 10159 |
|
|
off = (dest
|
| 10160 |
|
|
- elf_gp (plt->output_section->owner)
|
| 10161 |
|
|
- htab->stub_group[stub_entry->id_sec->id].toc_off);
|
| 10162 |
|
|
|
| 10163 |
|
|
if (off + 0x80008000 > 0xffffffff || (off & 7) != 0)
|
| 10164 |
|
|
{
|
| 10165 |
|
|
info->callbacks->einfo
|
| 10166 |
161 |
khays |
(_("%P: linkage table error against `%s'\n"),
|
| 10167 |
14 |
khays |
stub_entry->h != NULL
|
| 10168 |
|
|
? stub_entry->h->elf.root.root.string
|
| 10169 |
|
|
: "<local sym>");
|
| 10170 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 10171 |
|
|
htab->stub_error = TRUE;
|
| 10172 |
|
|
return FALSE;
|
| 10173 |
|
|
}
|
| 10174 |
|
|
|
| 10175 |
166 |
khays |
if (htab->plt_stub_align != 0)
|
| 10176 |
|
|
{
|
| 10177 |
|
|
unsigned pad = plt_stub_pad (htab, stub_entry, off);
|
| 10178 |
|
|
|
| 10179 |
|
|
stub_entry->stub_sec->size += pad;
|
| 10180 |
|
|
stub_entry->stub_offset = stub_entry->stub_sec->size;
|
| 10181 |
|
|
loc += pad;
|
| 10182 |
|
|
}
|
| 10183 |
|
|
|
| 10184 |
14 |
khays |
r = NULL;
|
| 10185 |
|
|
if (info->emitrelocations)
|
| 10186 |
|
|
{
|
| 10187 |
|
|
r = get_relocs (stub_entry->stub_sec,
|
| 10188 |
161 |
khays |
(2
|
| 10189 |
|
|
+ (PPC_HA (off) != 0)
|
| 10190 |
|
|
+ (htab->plt_static_chain
|
| 10191 |
|
|
&& PPC_HA (off + 16) == PPC_HA (off))));
|
| 10192 |
14 |
khays |
if (r == NULL)
|
| 10193 |
|
|
return FALSE;
|
| 10194 |
|
|
r[0].r_offset = loc - stub_entry->stub_sec->contents;
|
| 10195 |
|
|
if (bfd_big_endian (info->output_bfd))
|
| 10196 |
|
|
r[0].r_offset += 2;
|
| 10197 |
|
|
r[0].r_addend = dest;
|
| 10198 |
|
|
}
|
| 10199 |
|
|
if (stub_entry->h != NULL
|
| 10200 |
|
|
&& (stub_entry->h == htab->tls_get_addr_fd
|
| 10201 |
|
|
|| stub_entry->h == htab->tls_get_addr)
|
| 10202 |
|
|
&& !htab->no_tls_get_addr_opt)
|
| 10203 |
166 |
khays |
p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r);
|
| 10204 |
14 |
khays |
else
|
| 10205 |
166 |
khays |
p = build_plt_stub (htab, stub_entry, loc, off, r);
|
| 10206 |
14 |
khays |
size = p - loc;
|
| 10207 |
|
|
break;
|
| 10208 |
|
|
|
| 10209 |
|
|
default:
|
| 10210 |
|
|
BFD_FAIL ();
|
| 10211 |
|
|
return FALSE;
|
| 10212 |
|
|
}
|
| 10213 |
|
|
|
| 10214 |
|
|
stub_entry->stub_sec->size += size;
|
| 10215 |
|
|
|
| 10216 |
|
|
if (htab->emit_stub_syms)
|
| 10217 |
|
|
{
|
| 10218 |
|
|
struct elf_link_hash_entry *h;
|
| 10219 |
|
|
size_t len1, len2;
|
| 10220 |
|
|
char *name;
|
| 10221 |
|
|
const char *const stub_str[] = { "long_branch",
|
| 10222 |
|
|
"long_branch_r2off",
|
| 10223 |
|
|
"plt_branch",
|
| 10224 |
|
|
"plt_branch_r2off",
|
| 10225 |
166 |
khays |
"plt_call",
|
| 10226 |
14 |
khays |
"plt_call" };
|
| 10227 |
|
|
|
| 10228 |
|
|
len1 = strlen (stub_str[stub_entry->stub_type - 1]);
|
| 10229 |
|
|
len2 = strlen (stub_entry->root.string);
|
| 10230 |
|
|
name = bfd_malloc (len1 + len2 + 2);
|
| 10231 |
|
|
if (name == NULL)
|
| 10232 |
|
|
return FALSE;
|
| 10233 |
|
|
memcpy (name, stub_entry->root.string, 9);
|
| 10234 |
|
|
memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1);
|
| 10235 |
|
|
memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1);
|
| 10236 |
|
|
h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
|
| 10237 |
|
|
if (h == NULL)
|
| 10238 |
|
|
return FALSE;
|
| 10239 |
|
|
if (h->root.type == bfd_link_hash_new)
|
| 10240 |
|
|
{
|
| 10241 |
|
|
h->root.type = bfd_link_hash_defined;
|
| 10242 |
|
|
h->root.u.def.section = stub_entry->stub_sec;
|
| 10243 |
|
|
h->root.u.def.value = stub_entry->stub_offset;
|
| 10244 |
|
|
h->ref_regular = 1;
|
| 10245 |
|
|
h->def_regular = 1;
|
| 10246 |
|
|
h->ref_regular_nonweak = 1;
|
| 10247 |
|
|
h->forced_local = 1;
|
| 10248 |
|
|
h->non_elf = 0;
|
| 10249 |
|
|
}
|
| 10250 |
|
|
}
|
| 10251 |
|
|
|
| 10252 |
|
|
return TRUE;
|
| 10253 |
|
|
}
|
| 10254 |
|
|
|
| 10255 |
|
|
/* As above, but don't actually build the stub. Just bump offset so
|
| 10256 |
|
|
we know stub section sizes, and select plt_branch stubs where
|
| 10257 |
|
|
long_branch stubs won't do. */
|
| 10258 |
|
|
|
| 10259 |
|
|
static bfd_boolean
|
| 10260 |
|
|
ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
|
| 10261 |
|
|
{
|
| 10262 |
|
|
struct ppc_stub_hash_entry *stub_entry;
|
| 10263 |
|
|
struct bfd_link_info *info;
|
| 10264 |
|
|
struct ppc_link_hash_table *htab;
|
| 10265 |
|
|
bfd_vma off;
|
| 10266 |
|
|
int size;
|
| 10267 |
|
|
|
| 10268 |
|
|
/* Massage our args to the form they really have. */
|
| 10269 |
|
|
stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
|
| 10270 |
|
|
info = in_arg;
|
| 10271 |
|
|
|
| 10272 |
|
|
htab = ppc_hash_table (info);
|
| 10273 |
|
|
if (htab == NULL)
|
| 10274 |
|
|
return FALSE;
|
| 10275 |
|
|
|
| 10276 |
166 |
khays |
if (stub_entry->stub_type == ppc_stub_plt_call
|
| 10277 |
|
|
|| stub_entry->stub_type == ppc_stub_plt_call_r2save)
|
| 10278 |
14 |
khays |
{
|
| 10279 |
|
|
asection *plt;
|
| 10280 |
|
|
off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1;
|
| 10281 |
|
|
if (off >= (bfd_vma) -2)
|
| 10282 |
|
|
abort ();
|
| 10283 |
|
|
plt = htab->plt;
|
| 10284 |
|
|
if (!htab->elf.dynamic_sections_created
|
| 10285 |
|
|
|| stub_entry->h == NULL
|
| 10286 |
|
|
|| stub_entry->h->elf.dynindx == -1)
|
| 10287 |
|
|
plt = htab->iplt;
|
| 10288 |
|
|
off += (plt->output_offset
|
| 10289 |
|
|
+ plt->output_section->vma
|
| 10290 |
|
|
- elf_gp (plt->output_section->owner)
|
| 10291 |
|
|
- htab->stub_group[stub_entry->id_sec->id].toc_off);
|
| 10292 |
|
|
|
| 10293 |
166 |
khays |
size = plt_stub_size (htab, stub_entry, off);
|
| 10294 |
|
|
if (htab->plt_stub_align)
|
| 10295 |
|
|
size += plt_stub_pad (htab, stub_entry, off);
|
| 10296 |
14 |
khays |
if (info->emitrelocations)
|
| 10297 |
|
|
{
|
| 10298 |
|
|
stub_entry->stub_sec->reloc_count
|
| 10299 |
161 |
khays |
+= (2
|
| 10300 |
|
|
+ (PPC_HA (off) != 0)
|
| 10301 |
|
|
+ (htab->plt_static_chain
|
| 10302 |
|
|
&& PPC_HA (off + 16) == PPC_HA (off)));
|
| 10303 |
14 |
khays |
stub_entry->stub_sec->flags |= SEC_RELOC;
|
| 10304 |
|
|
}
|
| 10305 |
|
|
}
|
| 10306 |
|
|
else
|
| 10307 |
|
|
{
|
| 10308 |
|
|
/* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
|
| 10309 |
|
|
variants. */
|
| 10310 |
|
|
bfd_vma r2off = 0;
|
| 10311 |
|
|
|
| 10312 |
|
|
off = (stub_entry->target_value
|
| 10313 |
|
|
+ stub_entry->target_section->output_offset
|
| 10314 |
|
|
+ stub_entry->target_section->output_section->vma);
|
| 10315 |
|
|
off -= (stub_entry->stub_sec->size
|
| 10316 |
|
|
+ stub_entry->stub_sec->output_offset
|
| 10317 |
|
|
+ stub_entry->stub_sec->output_section->vma);
|
| 10318 |
|
|
|
| 10319 |
|
|
/* Reset the stub type from the plt variant in case we now
|
| 10320 |
|
|
can reach with a shorter stub. */
|
| 10321 |
|
|
if (stub_entry->stub_type >= ppc_stub_plt_branch)
|
| 10322 |
|
|
stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch;
|
| 10323 |
|
|
|
| 10324 |
|
|
size = 4;
|
| 10325 |
|
|
if (stub_entry->stub_type == ppc_stub_long_branch_r2off)
|
| 10326 |
|
|
{
|
| 10327 |
|
|
r2off = get_r2off (info, stub_entry);
|
| 10328 |
|
|
if (r2off == 0)
|
| 10329 |
|
|
{
|
| 10330 |
|
|
htab->stub_error = TRUE;
|
| 10331 |
|
|
return FALSE;
|
| 10332 |
|
|
}
|
| 10333 |
|
|
size = 12;
|
| 10334 |
|
|
if (PPC_HA (r2off) != 0)
|
| 10335 |
|
|
size = 16;
|
| 10336 |
|
|
off -= size - 4;
|
| 10337 |
|
|
}
|
| 10338 |
|
|
|
| 10339 |
|
|
/* If the branch offset if too big, use a ppc_stub_plt_branch. */
|
| 10340 |
|
|
if (off + (1 << 25) >= (bfd_vma) (1 << 26))
|
| 10341 |
|
|
{
|
| 10342 |
|
|
struct ppc_branch_hash_entry *br_entry;
|
| 10343 |
|
|
|
| 10344 |
|
|
br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
|
| 10345 |
|
|
stub_entry->root.string + 9,
|
| 10346 |
|
|
TRUE, FALSE);
|
| 10347 |
|
|
if (br_entry == NULL)
|
| 10348 |
|
|
{
|
| 10349 |
161 |
khays |
info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"),
|
| 10350 |
14 |
khays |
stub_entry->root.string);
|
| 10351 |
|
|
htab->stub_error = TRUE;
|
| 10352 |
|
|
return FALSE;
|
| 10353 |
|
|
}
|
| 10354 |
|
|
|
| 10355 |
|
|
if (br_entry->iter != htab->stub_iteration)
|
| 10356 |
|
|
{
|
| 10357 |
|
|
br_entry->iter = htab->stub_iteration;
|
| 10358 |
|
|
br_entry->offset = htab->brlt->size;
|
| 10359 |
|
|
htab->brlt->size += 8;
|
| 10360 |
|
|
|
| 10361 |
|
|
if (htab->relbrlt != NULL)
|
| 10362 |
|
|
htab->relbrlt->size += sizeof (Elf64_External_Rela);
|
| 10363 |
|
|
else if (info->emitrelocations)
|
| 10364 |
|
|
{
|
| 10365 |
|
|
htab->brlt->reloc_count += 1;
|
| 10366 |
|
|
htab->brlt->flags |= SEC_RELOC;
|
| 10367 |
|
|
}
|
| 10368 |
|
|
}
|
| 10369 |
|
|
|
| 10370 |
|
|
stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch;
|
| 10371 |
|
|
off = (br_entry->offset
|
| 10372 |
|
|
+ htab->brlt->output_offset
|
| 10373 |
|
|
+ htab->brlt->output_section->vma
|
| 10374 |
|
|
- elf_gp (htab->brlt->output_section->owner)
|
| 10375 |
|
|
- htab->stub_group[stub_entry->id_sec->id].toc_off);
|
| 10376 |
|
|
|
| 10377 |
|
|
if (info->emitrelocations)
|
| 10378 |
|
|
{
|
| 10379 |
|
|
stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0);
|
| 10380 |
|
|
stub_entry->stub_sec->flags |= SEC_RELOC;
|
| 10381 |
|
|
}
|
| 10382 |
|
|
|
| 10383 |
|
|
if (stub_entry->stub_type != ppc_stub_plt_branch_r2off)
|
| 10384 |
|
|
{
|
| 10385 |
|
|
size = 12;
|
| 10386 |
|
|
if (PPC_HA (off) != 0)
|
| 10387 |
|
|
size = 16;
|
| 10388 |
|
|
}
|
| 10389 |
|
|
else
|
| 10390 |
|
|
{
|
| 10391 |
|
|
size = 20;
|
| 10392 |
|
|
if (PPC_HA (off) != 0)
|
| 10393 |
|
|
size += 4;
|
| 10394 |
|
|
|
| 10395 |
|
|
if (PPC_HA (r2off) != 0)
|
| 10396 |
|
|
size += 4;
|
| 10397 |
|
|
}
|
| 10398 |
|
|
}
|
| 10399 |
|
|
else if (info->emitrelocations)
|
| 10400 |
|
|
{
|
| 10401 |
|
|
stub_entry->stub_sec->reloc_count += 1;
|
| 10402 |
|
|
stub_entry->stub_sec->flags |= SEC_RELOC;
|
| 10403 |
|
|
}
|
| 10404 |
|
|
}
|
| 10405 |
|
|
|
| 10406 |
|
|
stub_entry->stub_sec->size += size;
|
| 10407 |
|
|
return TRUE;
|
| 10408 |
|
|
}
|
| 10409 |
|
|
|
| 10410 |
|
|
/* Set up various things so that we can make a list of input sections
|
| 10411 |
|
|
for each output section included in the link. Returns -1 on error,
|
| 10412 |
|
|
|
| 10413 |
|
|
|
| 10414 |
|
|
int
|
| 10415 |
|
|
ppc64_elf_setup_section_lists
|
| 10416 |
|
|
(struct bfd_link_info *info,
|
| 10417 |
|
|
asection *(*add_stub_section) (const char *, asection *),
|
| 10418 |
|
|
void (*layout_sections_again) (void))
|
| 10419 |
|
|
{
|
| 10420 |
|
|
bfd *input_bfd;
|
| 10421 |
|
|
int top_id, top_index, id;
|
| 10422 |
|
|
asection *section;
|
| 10423 |
|
|
asection **input_list;
|
| 10424 |
|
|
bfd_size_type amt;
|
| 10425 |
|
|
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
| 10426 |
|
|
|
| 10427 |
|
|
if (htab == NULL)
|
| 10428 |
|
|
return -1;
|
| 10429 |
|
|
/* Stash our params away. */
|
| 10430 |
|
|
htab->add_stub_section = add_stub_section;
|
| 10431 |
|
|
htab->layout_sections_again = layout_sections_again;
|
| 10432 |
|
|
|
| 10433 |
|
|
if (htab->brlt == NULL)
|
| 10434 |
|
|
return 0;
|
| 10435 |
|
|
|
| 10436 |
|
|
/* Find the top input section id. */
|
| 10437 |
|
|
for (input_bfd = info->input_bfds, top_id = 3;
|
| 10438 |
|
|
input_bfd != NULL;
|
| 10439 |
|
|
input_bfd = input_bfd->link_next)
|
| 10440 |
|
|
{
|
| 10441 |
|
|
for (section = input_bfd->sections;
|
| 10442 |
|
|
section != NULL;
|
| 10443 |
|
|
section = section->next)
|
| 10444 |
|
|
{
|
| 10445 |
|
|
if (top_id < section->id)
|
| 10446 |
|
|
top_id = section->id;
|
| 10447 |
|
|
}
|
| 10448 |
|
|
}
|
| 10449 |
|
|
|
| 10450 |
|
|
htab->top_id = top_id;
|
| 10451 |
|
|
amt = sizeof (struct map_stub) * (top_id + 1);
|
| 10452 |
|
|
htab->stub_group = bfd_zmalloc (amt);
|
| 10453 |
|
|
if (htab->stub_group == NULL)
|
| 10454 |
|
|
return -1;
|
| 10455 |
|
|
|
| 10456 |
|
|
/* Set toc_off for com, und, abs and ind sections. */
|
| 10457 |
|
|
for (id = 0; id < 3; id++)
|
| 10458 |
|
|
htab->stub_group[id].toc_off = TOC_BASE_OFF;
|
| 10459 |
|
|
|
| 10460 |
|
|
/* We can't use output_bfd->section_count here to find the top output
|
| 10461 |
|
|
section index as some sections may have been removed, and
|
| 10462 |
|
|
strip_excluded_output_sections doesn't renumber the indices. */
|
| 10463 |
|
|
for (section = info->output_bfd->sections, top_index = 0;
|
| 10464 |
|
|
section != NULL;
|
| 10465 |
|
|
section = section->next)
|
| 10466 |
|
|
{
|
| 10467 |
|
|
if (top_index < section->index)
|
| 10468 |
|
|
top_index = section->index;
|
| 10469 |
|
|
}
|
| 10470 |
|
|
|
| 10471 |
|
|
htab->top_index = top_index;
|
| 10472 |
|
|
amt = sizeof (asection *) * (top_index + 1);
|
| 10473 |
|
|
input_list = bfd_zmalloc (amt);
|
| 10474 |
|
|
htab->input_list = input_list;
|
| 10475 |
|
|
if (input_list == NULL)
|
| 10476 |
|
|
return -1;
|
| 10477 |
|
|
|
| 10478 |
|
|
return 1;
|
| 10479 |
|
|
}
|
| 10480 |
|
|
|
| 10481 |
|
|
/* Set up for first pass at multitoc partitioning. */
|
| 10482 |
|
|
|
| 10483 |
|
|
void
|
| 10484 |
|
|
ppc64_elf_start_multitoc_partition (struct bfd_link_info *info)
|
| 10485 |
|
|
{
|
| 10486 |
|
|
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
| 10487 |
|
|
|
| 10488 |
|
|
elf_gp (info->output_bfd) = ppc64_elf_toc (info->output_bfd);
|
| 10489 |
|
|
htab->toc_curr = elf_gp (info->output_bfd);
|
| 10490 |
|
|
htab->toc_bfd = NULL;
|
| 10491 |
|
|
htab->toc_first_sec = NULL;
|
| 10492 |
|
|
}
|
| 10493 |
|
|
|
| 10494 |
|
|
/* The linker repeatedly calls this function for each TOC input section
|
| 10495 |
|
|
and linker generated GOT section. Group input bfds such that the toc
|
| 10496 |
|
|
within a group is less than 64k in size. */
|
| 10497 |
|
|
|
| 10498 |
|
|
bfd_boolean
|
| 10499 |
|
|
ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec)
|
| 10500 |
|
|
{
|
| 10501 |
|
|
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
| 10502 |
|
|
bfd_vma addr, off, limit;
|
| 10503 |
|
|
|
| 10504 |
|
|
if (htab == NULL)
|
| 10505 |
|
|
return FALSE;
|
| 10506 |
|
|
|
| 10507 |
|
|
if (!htab->second_toc_pass)
|
| 10508 |
|
|
{
|
| 10509 |
|
|
/* Keep track of the first .toc or .got section for this input bfd. */
|
| 10510 |
|
|
if (htab->toc_bfd != isec->owner)
|
| 10511 |
|
|
{
|
| 10512 |
|
|
htab->toc_bfd = isec->owner;
|
| 10513 |
|
|
htab->toc_first_sec = isec;
|
| 10514 |
|
|
}
|
| 10515 |
|
|
|
| 10516 |
|
|
addr = isec->output_offset + isec->output_section->vma;
|
| 10517 |
|
|
off = addr - htab->toc_curr;
|
| 10518 |
|
|
limit = 0x80008000;
|
| 10519 |
|
|
if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc)
|
| 10520 |
|
|
limit = 0x10000;
|
| 10521 |
|
|
if (off + isec->size > limit)
|
| 10522 |
|
|
{
|
| 10523 |
|
|
addr = (htab->toc_first_sec->output_offset
|
| 10524 |
|
|
+ htab->toc_first_sec->output_section->vma);
|
| 10525 |
|
|
htab->toc_curr = addr;
|
| 10526 |
|
|
}
|
| 10527 |
|
|
|
| 10528 |
|
|
/* toc_curr is the base address of this toc group. Set elf_gp
|
| 10529 |
|
|
for the input section to be the offset relative to the
|
| 10530 |
|
|
output toc base plus 0x8000. Making the input elf_gp an
|
| 10531 |
|
|
offset allows us to move the toc as a whole without
|
| 10532 |
|
|
recalculating input elf_gp. */
|
| 10533 |
|
|
off = htab->toc_curr - elf_gp (isec->output_section->owner);
|
| 10534 |
|
|
off += TOC_BASE_OFF;
|
| 10535 |
|
|
|
| 10536 |
|
|
/* Die if someone uses a linker script that doesn't keep input
|
| 10537 |
|
|
file .toc and .got together. */
|
| 10538 |
|
|
if (elf_gp (isec->owner) != 0
|
| 10539 |
|
|
&& elf_gp (isec->owner) != off)
|
| 10540 |
|
|
return FALSE;
|
| 10541 |
|
|
|
| 10542 |
|
|
elf_gp (isec->owner) = off;
|
| 10543 |
|
|
return TRUE;
|
| 10544 |
|
|
}
|
| 10545 |
|
|
|
| 10546 |
|
|
/* During the second pass toc_first_sec points to the start of
|
| 10547 |
|
|
a toc group, and toc_curr is used to track the old elf_gp.
|
| 10548 |
|
|
We use toc_bfd to ensure we only look at each bfd once. */
|
| 10549 |
|
|
if (htab->toc_bfd == isec->owner)
|
| 10550 |
|
|
return TRUE;
|
| 10551 |
|
|
htab->toc_bfd = isec->owner;
|
| 10552 |
|
|
|
| 10553 |
|
|
if (htab->toc_first_sec == NULL
|
| 10554 |
|
|
|| htab->toc_curr != elf_gp (isec->owner))
|
| 10555 |
|
|
{
|
| 10556 |
|
|
htab->toc_curr = elf_gp (isec->owner);
|
| 10557 |
|
|
htab->toc_first_sec = isec;
|
| 10558 |
|
|
}
|
| 10559 |
|
|
addr = (htab->toc_first_sec->output_offset
|
| 10560 |
|
|
+ htab->toc_first_sec->output_section->vma);
|
| 10561 |
|
|
off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF;
|
| 10562 |
|
|
elf_gp (isec->owner) = off;
|
| 10563 |
|
|
|
| 10564 |
|
|
return TRUE;
|
| 10565 |
|
|
}
|
| 10566 |
|
|
|
| 10567 |
|
|
/* Called via elf_link_hash_traverse to merge GOT entries for global
|
| 10568 |
|
|
symbol H. */
|
| 10569 |
|
|
|
| 10570 |
|
|
static bfd_boolean
|
| 10571 |
|
|
merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
|
| 10572 |
|
|
{
|
| 10573 |
|
|
if (h->root.type == bfd_link_hash_indirect)
|
| 10574 |
|
|
return TRUE;
|
| 10575 |
|
|
|
| 10576 |
|
|
merge_got_entries (&h->got.glist);
|
| 10577 |
|
|
|
| 10578 |
|
|
return TRUE;
|
| 10579 |
|
|
}
|
| 10580 |
|
|
|
| 10581 |
|
|
/* Called via elf_link_hash_traverse to allocate GOT entries for global
|
| 10582 |
|
|
symbol H. */
|
| 10583 |
|
|
|
| 10584 |
|
|
static bfd_boolean
|
| 10585 |
|
|
reallocate_got (struct elf_link_hash_entry *h, void *inf)
|
| 10586 |
|
|
{
|
| 10587 |
|
|
struct got_entry *gent;
|
| 10588 |
|
|
|
| 10589 |
|
|
if (h->root.type == bfd_link_hash_indirect)
|
| 10590 |
|
|
return TRUE;
|
| 10591 |
|
|
|
| 10592 |
|
|
for (gent = h->got.glist; gent != NULL; gent = gent->next)
|
| 10593 |
|
|
if (!gent->is_indirect)
|
| 10594 |
|
|
allocate_got (h, (struct bfd_link_info *) inf, gent);
|
| 10595 |
|
|
return TRUE;
|
| 10596 |
|
|
}
|
| 10597 |
|
|
|
| 10598 |
|
|
/* Called on the first multitoc pass after the last call to
|
| 10599 |
|
|
ppc64_elf_next_toc_section. This function removes duplicate GOT
|
| 10600 |
|
|
entries. */
|
| 10601 |
|
|
|
| 10602 |
|
|
bfd_boolean
|
| 10603 |
|
|
ppc64_elf_layout_multitoc (struct bfd_link_info *info)
|
| 10604 |
|
|
{
|
| 10605 |
|
|
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
| 10606 |
|
|
struct bfd *ibfd, *ibfd2;
|
| 10607 |
|
|
bfd_boolean done_something;
|
| 10608 |
|
|
|
| 10609 |
|
|
htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd);
|
| 10610 |
|
|
|
| 10611 |
|
|
if (!htab->do_multi_toc)
|
| 10612 |
|
|
return FALSE;
|
| 10613 |
|
|
|
| 10614 |
|
|
/* Merge global sym got entries within a toc group. */
|
| 10615 |
|
|
elf_link_hash_traverse (&htab->elf, merge_global_got, info);
|
| 10616 |
|
|
|
| 10617 |
|
|
/* And tlsld_got. */
|
| 10618 |
|
|
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
|
| 10619 |
|
|
{
|
| 10620 |
|
|
struct got_entry *ent, *ent2;
|
| 10621 |
|
|
|
| 10622 |
|
|
if (!is_ppc64_elf (ibfd))
|
| 10623 |
|
|
continue;
|
| 10624 |
|
|
|
| 10625 |
|
|
ent = ppc64_tlsld_got (ibfd);
|
| 10626 |
|
|
if (!ent->is_indirect
|
| 10627 |
|
|
&& ent->got.offset != (bfd_vma) -1)
|
| 10628 |
|
|
{
|
| 10629 |
|
|
for (ibfd2 = ibfd->link_next; ibfd2 != NULL; ibfd2 = ibfd2->link_next)
|
| 10630 |
|
|
{
|
| 10631 |
|
|
if (!is_ppc64_elf (ibfd2))
|
| 10632 |
|
|
continue;
|
| 10633 |
|
|
|
| 10634 |
|
|
ent2 = ppc64_tlsld_got (ibfd2);
|
| 10635 |
|
|
if (!ent2->is_indirect
|
| 10636 |
|
|
&& ent2->got.offset != (bfd_vma) -1
|
| 10637 |
|
|
&& elf_gp (ibfd2) == elf_gp (ibfd))
|
| 10638 |
|
|
{
|
| 10639 |
|
|
ent2->is_indirect = TRUE;
|
| 10640 |
|
|
ent2->got.ent = ent;
|
| 10641 |
|
|
}
|
| 10642 |
|
|
}
|
| 10643 |
|
|
}
|
| 10644 |
|
|
}
|
| 10645 |
|
|
|
| 10646 |
|
|
/* Zap sizes of got sections. */
|
| 10647 |
|
|
htab->reliplt->rawsize = htab->reliplt->size;
|
| 10648 |
|
|
htab->reliplt->size -= htab->got_reli_size;
|
| 10649 |
|
|
htab->got_reli_size = 0;
|
| 10650 |
|
|
|
| 10651 |
|
|
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
|
| 10652 |
|
|
{
|
| 10653 |
|
|
asection *got, *relgot;
|
| 10654 |
|
|
|
| 10655 |
|
|
if (!is_ppc64_elf (ibfd))
|
| 10656 |
|
|
continue;
|
| 10657 |
|
|
|
| 10658 |
|
|
got = ppc64_elf_tdata (ibfd)->got;
|
| 10659 |
|
|
if (got != NULL)
|
| 10660 |
|
|
{
|
| 10661 |
|
|
got->rawsize = got->size;
|
| 10662 |
|
|
got->size = 0;
|
| 10663 |
|
|
relgot = ppc64_elf_tdata (ibfd)->relgot;
|
| 10664 |
|
|
relgot->rawsize = relgot->size;
|
| 10665 |
|
|
relgot->size = 0;
|
| 10666 |
|
|
}
|
| 10667 |
|
|
}
|
| 10668 |
|
|
|
| 10669 |
|
|
/* Now reallocate the got, local syms first. We don't need to
|
| 10670 |
|
|
allocate section contents again since we never increase size. */
|
| 10671 |
|
|
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
|
| 10672 |
|
|
{
|
| 10673 |
|
|
struct got_entry **lgot_ents;
|
| 10674 |
|
|
struct got_entry **end_lgot_ents;
|
| 10675 |
|
|
struct plt_entry **local_plt;
|
| 10676 |
|
|
struct plt_entry **end_local_plt;
|
| 10677 |
|
|
unsigned char *lgot_masks;
|
| 10678 |
|
|
bfd_size_type locsymcount;
|
| 10679 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 10680 |
|
|
asection *s, *srel;
|
| 10681 |
|
|
|
| 10682 |
|
|
if (!is_ppc64_elf (ibfd))
|
| 10683 |
|
|
continue;
|
| 10684 |
|
|
|
| 10685 |
|
|
lgot_ents = elf_local_got_ents (ibfd);
|
| 10686 |
|
|
if (!lgot_ents)
|
| 10687 |
|
|
continue;
|
| 10688 |
|
|
|
| 10689 |
|
|
symtab_hdr = &elf_symtab_hdr (ibfd);
|
| 10690 |
|
|
locsymcount = symtab_hdr->sh_info;
|
| 10691 |
|
|
end_lgot_ents = lgot_ents + locsymcount;
|
| 10692 |
|
|
local_plt = (struct plt_entry **) end_lgot_ents;
|
| 10693 |
|
|
end_local_plt = local_plt + locsymcount;
|
| 10694 |
|
|
lgot_masks = (unsigned char *) end_local_plt;
|
| 10695 |
|
|
s = ppc64_elf_tdata (ibfd)->got;
|
| 10696 |
|
|
srel = ppc64_elf_tdata (ibfd)->relgot;
|
| 10697 |
|
|
for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks)
|
| 10698 |
|
|
{
|
| 10699 |
|
|
struct got_entry *ent;
|
| 10700 |
|
|
|
| 10701 |
|
|
for (ent = *lgot_ents; ent != NULL; ent = ent->next)
|
| 10702 |
|
|
{
|
| 10703 |
|
|
unsigned int num = 1;
|
| 10704 |
|
|
ent->got.offset = s->size;
|
| 10705 |
|
|
if ((ent->tls_type & *lgot_masks & TLS_GD) != 0)
|
| 10706 |
|
|
num = 2;
|
| 10707 |
|
|
s->size += num * 8;
|
| 10708 |
|
|
if (info->shared)
|
| 10709 |
|
|
srel->size += num * sizeof (Elf64_External_Rela);
|
| 10710 |
|
|
else if ((*lgot_masks & PLT_IFUNC) != 0)
|
| 10711 |
|
|
{
|
| 10712 |
|
|
htab->reliplt->size
|
| 10713 |
|
|
+= num * sizeof (Elf64_External_Rela);
|
| 10714 |
|
|
htab->got_reli_size
|
| 10715 |
|
|
+= num * sizeof (Elf64_External_Rela);
|
| 10716 |
|
|
}
|
| 10717 |
|
|
}
|
| 10718 |
|
|
}
|
| 10719 |
|
|
}
|
| 10720 |
|
|
|
| 10721 |
|
|
elf_link_hash_traverse (&htab->elf, reallocate_got, info);
|
| 10722 |
|
|
|
| 10723 |
|
|
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
|
| 10724 |
|
|
{
|
| 10725 |
|
|
struct got_entry *ent;
|
| 10726 |
|
|
|
| 10727 |
|
|
if (!is_ppc64_elf (ibfd))
|
| 10728 |
|
|
continue;
|
| 10729 |
|
|
|
| 10730 |
|
|
ent = ppc64_tlsld_got (ibfd);
|
| 10731 |
|
|
if (!ent->is_indirect
|
| 10732 |
|
|
&& ent->got.offset != (bfd_vma) -1)
|
| 10733 |
|
|
{
|
| 10734 |
|
|
asection *s = ppc64_elf_tdata (ibfd)->got;
|
| 10735 |
|
|
ent->got.offset = s->size;
|
| 10736 |
|
|
s->size += 16;
|
| 10737 |
|
|
if (info->shared)
|
| 10738 |
|
|
{
|
| 10739 |
|
|
asection *srel = ppc64_elf_tdata (ibfd)->relgot;
|
| 10740 |
|
|
srel->size += sizeof (Elf64_External_Rela);
|
| 10741 |
|
|
}
|
| 10742 |
|
|
}
|
| 10743 |
|
|
}
|
| 10744 |
|
|
|
| 10745 |
|
|
done_something = htab->reliplt->rawsize != htab->reliplt->size;
|
| 10746 |
|
|
if (!done_something)
|
| 10747 |
|
|
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
|
| 10748 |
|
|
{
|
| 10749 |
|
|
asection *got;
|
| 10750 |
|
|
|
| 10751 |
|
|
if (!is_ppc64_elf (ibfd))
|
| 10752 |
|
|
continue;
|
| 10753 |
|
|
|
| 10754 |
|
|
got = ppc64_elf_tdata (ibfd)->got;
|
| 10755 |
|
|
if (got != NULL)
|
| 10756 |
|
|
{
|
| 10757 |
|
|
done_something = got->rawsize != got->size;
|
| 10758 |
|
|
if (done_something)
|
| 10759 |
|
|
break;
|
| 10760 |
|
|
}
|
| 10761 |
|
|
}
|
| 10762 |
|
|
|
| 10763 |
|
|
if (done_something)
|
| 10764 |
|
|
(*htab->layout_sections_again) ();
|
| 10765 |
|
|
|
| 10766 |
|
|
/* Set up for second pass over toc sections to recalculate elf_gp
|
| 10767 |
|
|
on input sections. */
|
| 10768 |
|
|
htab->toc_bfd = NULL;
|
| 10769 |
|
|
htab->toc_first_sec = NULL;
|
| 10770 |
|
|
htab->second_toc_pass = TRUE;
|
| 10771 |
|
|
return done_something;
|
| 10772 |
|
|
}
|
| 10773 |
|
|
|
| 10774 |
|
|
/* Called after second pass of multitoc partitioning. */
|
| 10775 |
|
|
|
| 10776 |
|
|
void
|
| 10777 |
|
|
ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info)
|
| 10778 |
|
|
{
|
| 10779 |
|
|
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
| 10780 |
|
|
|
| 10781 |
|
|
/* After the second pass, toc_curr tracks the TOC offset used
|
| 10782 |
|
|
for code sections below in ppc64_elf_next_input_section. */
|
| 10783 |
|
|
htab->toc_curr = TOC_BASE_OFF;
|
| 10784 |
|
|
}
|
| 10785 |
|
|
|
| 10786 |
|
|
/* No toc references were found in ISEC. If the code in ISEC makes no
|
| 10787 |
|
|
calls, then there's no need to use toc adjusting stubs when branching
|
| 10788 |
|
|
into ISEC. Actually, indirect calls from ISEC are OK as they will
|
| 10789 |
|
|
load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
|
| 10790 |
|
|
needed, and 2 if a cyclical call-graph was found but no other reason
|
| 10791 |
|
|
for a stub was detected. If called from the top level, a return of
|
| 10792 |
|
|
2 means the same as a return of 0. */
|
| 10793 |
|
|
|
| 10794 |
|
|
static int
|
| 10795 |
|
|
toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec)
|
| 10796 |
|
|
{
|
| 10797 |
|
|
int ret;
|
| 10798 |
|
|
|
| 10799 |
|
|
/* Mark this section as checked. */
|
| 10800 |
|
|
isec->call_check_done = 1;
|
| 10801 |
|
|
|
| 10802 |
|
|
/* We know none of our code bearing sections will need toc stubs. */
|
| 10803 |
|
|
if ((isec->flags & SEC_LINKER_CREATED) != 0)
|
| 10804 |
|
|
return 0;
|
| 10805 |
|
|
|
| 10806 |
|
|
if (isec->size == 0)
|
| 10807 |
|
|
return 0;
|
| 10808 |
|
|
|
| 10809 |
|
|
if (isec->output_section == NULL)
|
| 10810 |
|
|
return 0;
|
| 10811 |
|
|
|
| 10812 |
|
|
ret = 0;
|
| 10813 |
|
|
if (isec->reloc_count != 0)
|
| 10814 |
|
|
{
|
| 10815 |
|
|
Elf_Internal_Rela *relstart, *rel;
|
| 10816 |
|
|
Elf_Internal_Sym *local_syms;
|
| 10817 |
|
|
struct ppc_link_hash_table *htab;
|
| 10818 |
|
|
|
| 10819 |
|
|
relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL,
|
| 10820 |
|
|
info->keep_memory);
|
| 10821 |
|
|
if (relstart == NULL)
|
| 10822 |
|
|
return -1;
|
| 10823 |
|
|
|
| 10824 |
|
|
/* Look for branches to outside of this section. */
|
| 10825 |
|
|
local_syms = NULL;
|
| 10826 |
|
|
htab = ppc_hash_table (info);
|
| 10827 |
|
|
if (htab == NULL)
|
| 10828 |
|
|
return -1;
|
| 10829 |
|
|
|
| 10830 |
|
|
for (rel = relstart; rel < relstart + isec->reloc_count; ++rel)
|
| 10831 |
|
|
{
|
| 10832 |
|
|
enum elf_ppc64_reloc_type r_type;
|
| 10833 |
|
|
unsigned long r_symndx;
|
| 10834 |
|
|
struct elf_link_hash_entry *h;
|
| 10835 |
|
|
struct ppc_link_hash_entry *eh;
|
| 10836 |
|
|
Elf_Internal_Sym *sym;
|
| 10837 |
|
|
asection *sym_sec;
|
| 10838 |
|
|
struct _opd_sec_data *opd;
|
| 10839 |
|
|
bfd_vma sym_value;
|
| 10840 |
|
|
bfd_vma dest;
|
| 10841 |
|
|
|
| 10842 |
|
|
r_type = ELF64_R_TYPE (rel->r_info);
|
| 10843 |
|
|
if (r_type != R_PPC64_REL24
|
| 10844 |
|
|
&& r_type != R_PPC64_REL14
|
| 10845 |
|
|
&& r_type != R_PPC64_REL14_BRTAKEN
|
| 10846 |
|
|
&& r_type != R_PPC64_REL14_BRNTAKEN)
|
| 10847 |
|
|
continue;
|
| 10848 |
|
|
|
| 10849 |
|
|
r_symndx = ELF64_R_SYM (rel->r_info);
|
| 10850 |
|
|
if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx,
|
| 10851 |
|
|
isec->owner))
|
| 10852 |
|
|
{
|
| 10853 |
|
|
ret = -1;
|
| 10854 |
|
|
break;
|
| 10855 |
|
|
}
|
| 10856 |
|
|
|
| 10857 |
|
|
/* Calls to dynamic lib functions go through a plt call stub
|
| 10858 |
|
|
that uses r2. */
|
| 10859 |
|
|
eh = (struct ppc_link_hash_entry *) h;
|
| 10860 |
|
|
if (eh != NULL
|
| 10861 |
|
|
&& (eh->elf.plt.plist != NULL
|
| 10862 |
|
|
|| (eh->oh != NULL
|
| 10863 |
|
|
&& ppc_follow_link (eh->oh)->elf.plt.plist != NULL)))
|
| 10864 |
|
|
{
|
| 10865 |
|
|
ret = 1;
|
| 10866 |
|
|
break;
|
| 10867 |
|
|
}
|
| 10868 |
|
|
|
| 10869 |
|
|
if (sym_sec == NULL)
|
| 10870 |
|
|
/* Ignore other undefined symbols. */
|
| 10871 |
|
|
continue;
|
| 10872 |
|
|
|
| 10873 |
|
|
/* Assume branches to other sections not included in the
|
| 10874 |
|
|
link need stubs too, to cover -R and absolute syms. */
|
| 10875 |
|
|
if (sym_sec->output_section == NULL)
|
| 10876 |
|
|
{
|
| 10877 |
|
|
ret = 1;
|
| 10878 |
|
|
break;
|
| 10879 |
|
|
}
|
| 10880 |
|
|
|
| 10881 |
|
|
if (h == NULL)
|
| 10882 |
|
|
sym_value = sym->st_value;
|
| 10883 |
|
|
else
|
| 10884 |
|
|
{
|
| 10885 |
|
|
if (h->root.type != bfd_link_hash_defined
|
| 10886 |
|
|
&& h->root.type != bfd_link_hash_defweak)
|
| 10887 |
|
|
abort ();
|
| 10888 |
|
|
sym_value = h->root.u.def.value;
|
| 10889 |
|
|
}
|
| 10890 |
|
|
sym_value += rel->r_addend;
|
| 10891 |
|
|
|
| 10892 |
|
|
/* If this branch reloc uses an opd sym, find the code section. */
|
| 10893 |
|
|
opd = get_opd_info (sym_sec);
|
| 10894 |
|
|
if (opd != NULL)
|
| 10895 |
|
|
{
|
| 10896 |
|
|
if (h == NULL && opd->adjust != NULL)
|
| 10897 |
|
|
{
|
| 10898 |
|
|
long adjust;
|
| 10899 |
|
|
|
| 10900 |
|
|
adjust = opd->adjust[sym->st_value / 8];
|
| 10901 |
|
|
if (adjust == -1)
|
| 10902 |
|
|
/* Assume deleted functions won't ever be called. */
|
| 10903 |
|
|
continue;
|
| 10904 |
|
|
sym_value += adjust;
|
| 10905 |
|
|
}
|
| 10906 |
|
|
|
| 10907 |
|
|
dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL);
|
| 10908 |
|
|
if (dest == (bfd_vma) -1)
|
| 10909 |
|
|
continue;
|
| 10910 |
|
|
}
|
| 10911 |
|
|
else
|
| 10912 |
|
|
dest = (sym_value
|
| 10913 |
|
|
+ sym_sec->output_offset
|
| 10914 |
|
|
+ sym_sec->output_section->vma);
|
| 10915 |
|
|
|
| 10916 |
|
|
/* Ignore branch to self. */
|
| 10917 |
|
|
if (sym_sec == isec)
|
| 10918 |
|
|
continue;
|
| 10919 |
|
|
|
| 10920 |
|
|
/* If the called function uses the toc, we need a stub. */
|
| 10921 |
|
|
if (sym_sec->has_toc_reloc
|
| 10922 |
|
|
|| sym_sec->makes_toc_func_call)
|
| 10923 |
|
|
{
|
| 10924 |
|
|
ret = 1;
|
| 10925 |
|
|
break;
|
| 10926 |
|
|
}
|
| 10927 |
|
|
|
| 10928 |
|
|
/* Assume any branch that needs a long branch stub might in fact
|
| 10929 |
|
|
need a plt_branch stub. A plt_branch stub uses r2. */
|
| 10930 |
|
|
else if (dest - (isec->output_offset
|
| 10931 |
|
|
+ isec->output_section->vma
|
| 10932 |
|
|
+ rel->r_offset) + (1 << 25) >= (2 << 25))
|
| 10933 |
|
|
{
|
| 10934 |
|
|
ret = 1;
|
| 10935 |
|
|
break;
|
| 10936 |
|
|
}
|
| 10937 |
|
|
|
| 10938 |
|
|
/* If calling back to a section in the process of being
|
| 10939 |
|
|
tested, we can't say for sure that no toc adjusting stubs
|
| 10940 |
|
|
are needed, so don't return zero. */
|
| 10941 |
|
|
else if (sym_sec->call_check_in_progress)
|
| 10942 |
|
|
ret = 2;
|
| 10943 |
|
|
|
| 10944 |
|
|
/* Branches to another section that itself doesn't have any TOC
|
| 10945 |
|
|
references are OK. Recursively call ourselves to check. */
|
| 10946 |
|
|
else if (!sym_sec->call_check_done)
|
| 10947 |
|
|
{
|
| 10948 |
|
|
int recur;
|
| 10949 |
|
|
|
| 10950 |
|
|
/* Mark current section as indeterminate, so that other
|
| 10951 |
|
|
sections that call back to current won't be marked as
|
| 10952 |
|
|
known. */
|
| 10953 |
|
|
isec->call_check_in_progress = 1;
|
| 10954 |
|
|
recur = toc_adjusting_stub_needed (info, sym_sec);
|
| 10955 |
|
|
isec->call_check_in_progress = 0;
|
| 10956 |
|
|
|
| 10957 |
|
|
if (recur != 0)
|
| 10958 |
|
|
{
|
| 10959 |
|
|
ret = recur;
|
| 10960 |
|
|
if (recur != 2)
|
| 10961 |
|
|
break;
|
| 10962 |
|
|
}
|
| 10963 |
|
|
}
|
| 10964 |
|
|
}
|
| 10965 |
|
|
|
| 10966 |
|
|
if (local_syms != NULL
|
| 10967 |
|
|
&& (elf_symtab_hdr (isec->owner).contents
|
| 10968 |
|
|
!= (unsigned char *) local_syms))
|
| 10969 |
|
|
free (local_syms);
|
| 10970 |
|
|
if (elf_section_data (isec)->relocs != relstart)
|
| 10971 |
|
|
free (relstart);
|
| 10972 |
|
|
}
|
| 10973 |
|
|
|
| 10974 |
|
|
if ((ret & 1) == 0
|
| 10975 |
|
|
&& isec->map_head.s != NULL
|
| 10976 |
|
|
&& (strcmp (isec->output_section->name, ".init") == 0
|
| 10977 |
|
|
|| strcmp (isec->output_section->name, ".fini") == 0))
|
| 10978 |
|
|
{
|
| 10979 |
|
|
if (isec->map_head.s->has_toc_reloc
|
| 10980 |
|
|
|| isec->map_head.s->makes_toc_func_call)
|
| 10981 |
|
|
ret = 1;
|
| 10982 |
|
|
else if (!isec->map_head.s->call_check_done)
|
| 10983 |
|
|
{
|
| 10984 |
|
|
int recur;
|
| 10985 |
|
|
isec->call_check_in_progress = 1;
|
| 10986 |
|
|
recur = toc_adjusting_stub_needed (info, isec->map_head.s);
|
| 10987 |
|
|
isec->call_check_in_progress = 0;
|
| 10988 |
|
|
if (recur != 0)
|
| 10989 |
|
|
ret = recur;
|
| 10990 |
|
|
}
|
| 10991 |
|
|
}
|
| 10992 |
|
|
|
| 10993 |
|
|
if (ret == 1)
|
| 10994 |
|
|
isec->makes_toc_func_call = 1;
|
| 10995 |
|
|
|
| 10996 |
|
|
return ret;
|
| 10997 |
|
|
}
|
| 10998 |
|
|
|
| 10999 |
|
|
/* The linker repeatedly calls this function for each input section,
|
| 11000 |
|
|
in the order that input sections are linked into output sections.
|
| 11001 |
|
|
Build lists of input sections to determine groupings between which
|
| 11002 |
|
|
we may insert linker stubs. */
|
| 11003 |
|
|
|
| 11004 |
|
|
bfd_boolean
|
| 11005 |
|
|
ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
|
| 11006 |
|
|
{
|
| 11007 |
|
|
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
| 11008 |
|
|
|
| 11009 |
|
|
if (htab == NULL)
|
| 11010 |
|
|
return FALSE;
|
| 11011 |
|
|
|
| 11012 |
|
|
if ((isec->output_section->flags & SEC_CODE) != 0
|
| 11013 |
|
|
&& isec->output_section->index <= htab->top_index)
|
| 11014 |
|
|
{
|
| 11015 |
|
|
asection **list = htab->input_list + isec->output_section->index;
|
| 11016 |
|
|
/* Steal the link_sec pointer for our list. */
|
| 11017 |
|
|
#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
|
| 11018 |
|
|
/* This happens to make the list in reverse order,
|
| 11019 |
|
|
which is what we want. */
|
| 11020 |
|
|
PREV_SEC (isec) = *list;
|
| 11021 |
|
|
*list = isec;
|
| 11022 |
|
|
}
|
| 11023 |
|
|
|
| 11024 |
|
|
if (htab->multi_toc_needed)
|
| 11025 |
|
|
{
|
| 11026 |
|
|
/* If a code section has a function that uses the TOC then we need
|
| 11027 |
|
|
to use the right TOC (obviously). Also, make sure that .opd gets
|
| 11028 |
|
|
the correct TOC value for R_PPC64_TOC relocs that don't have or
|
| 11029 |
|
|
can't find their function symbol (shouldn't ever happen now).
|
| 11030 |
|
|
Also specially treat .fixup for the linux kernel. .fixup
|
| 11031 |
|
|
contains branches, but only back to the function that hit an
|
| 11032 |
|
|
exception. */
|
| 11033 |
|
|
if (isec->has_toc_reloc
|
| 11034 |
|
|
|| (isec->flags & SEC_CODE) == 0
|
| 11035 |
|
|
|| strcmp (isec->name, ".fixup") == 0)
|
| 11036 |
|
|
{
|
| 11037 |
|
|
if (elf_gp (isec->owner) != 0)
|
| 11038 |
|
|
htab->toc_curr = elf_gp (isec->owner);
|
| 11039 |
|
|
}
|
| 11040 |
|
|
else
|
| 11041 |
|
|
{
|
| 11042 |
|
|
if (!isec->call_check_done
|
| 11043 |
|
|
&& toc_adjusting_stub_needed (info, isec) < 0)
|
| 11044 |
|
|
return FALSE;
|
| 11045 |
|
|
/* If we make a local call from this section, ie. a branch
|
| 11046 |
|
|
without a following nop, then we have no place to put a
|
| 11047 |
|
|
toc restoring insn. We must use the same toc group as
|
| 11048 |
|
|
the callee.
|
| 11049 |
|
|
Testing makes_toc_func_call actually tests for *any*
|
| 11050 |
|
|
calls to functions that need a good toc pointer. A more
|
| 11051 |
|
|
precise test would be better, as this one will set
|
| 11052 |
|
|
incorrect values for pasted .init/.fini fragments.
|
| 11053 |
|
|
(Fixed later in check_pasted_section.) */
|
| 11054 |
|
|
if (isec->makes_toc_func_call
|
| 11055 |
|
|
&& elf_gp (isec->owner) != 0)
|
| 11056 |
|
|
htab->toc_curr = elf_gp (isec->owner);
|
| 11057 |
|
|
}
|
| 11058 |
|
|
}
|
| 11059 |
|
|
|
| 11060 |
|
|
/* Functions that don't use the TOC can belong in any TOC group.
|
| 11061 |
|
|
Use the last TOC base. */
|
| 11062 |
|
|
htab->stub_group[isec->id].toc_off = htab->toc_curr;
|
| 11063 |
|
|
return TRUE;
|
| 11064 |
|
|
}
|
| 11065 |
|
|
|
| 11066 |
|
|
/* Check that all .init and .fini sections use the same toc, if they
|
| 11067 |
|
|
have toc relocs. */
|
| 11068 |
|
|
|
| 11069 |
|
|
static bfd_boolean
|
| 11070 |
|
|
check_pasted_section (struct bfd_link_info *info, const char *name)
|
| 11071 |
|
|
{
|
| 11072 |
|
|
asection *o = bfd_get_section_by_name (info->output_bfd, name);
|
| 11073 |
|
|
|
| 11074 |
|
|
if (o != NULL)
|
| 11075 |
|
|
{
|
| 11076 |
|
|
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
| 11077 |
|
|
bfd_vma toc_off = 0;
|
| 11078 |
|
|
asection *i;
|
| 11079 |
|
|
|
| 11080 |
|
|
for (i = o->map_head.s; i != NULL; i = i->map_head.s)
|
| 11081 |
|
|
if (i->has_toc_reloc)
|
| 11082 |
|
|
{
|
| 11083 |
|
|
if (toc_off == 0)
|
| 11084 |
|
|
toc_off = htab->stub_group[i->id].toc_off;
|
| 11085 |
|
|
else if (toc_off != htab->stub_group[i->id].toc_off)
|
| 11086 |
|
|
return FALSE;
|
| 11087 |
|
|
}
|
| 11088 |
|
|
|
| 11089 |
|
|
if (toc_off == 0)
|
| 11090 |
|
|
for (i = o->map_head.s; i != NULL; i = i->map_head.s)
|
| 11091 |
|
|
if (i->makes_toc_func_call)
|
| 11092 |
|
|
{
|
| 11093 |
|
|
toc_off = htab->stub_group[i->id].toc_off;
|
| 11094 |
|
|
break;
|
| 11095 |
|
|
}
|
| 11096 |
|
|
|
| 11097 |
|
|
/* Make sure the whole pasted function uses the same toc offset. */
|
| 11098 |
|
|
if (toc_off != 0)
|
| 11099 |
|
|
for (i = o->map_head.s; i != NULL; i = i->map_head.s)
|
| 11100 |
|
|
htab->stub_group[i->id].toc_off = toc_off;
|
| 11101 |
|
|
}
|
| 11102 |
|
|
return TRUE;
|
| 11103 |
|
|
}
|
| 11104 |
|
|
|
| 11105 |
|
|
bfd_boolean
|
| 11106 |
|
|
ppc64_elf_check_init_fini (struct bfd_link_info *info)
|
| 11107 |
|
|
{
|
| 11108 |
|
|
return (check_pasted_section (info, ".init")
|
| 11109 |
|
|
& check_pasted_section (info, ".fini"));
|
| 11110 |
|
|
}
|
| 11111 |
|
|
|
| 11112 |
|
|
/* See whether we can group stub sections together. Grouping stub
|
| 11113 |
|
|
sections may result in fewer stubs. More importantly, we need to
|
| 11114 |
|
|
put all .init* and .fini* stubs at the beginning of the .init or
|
| 11115 |
|
|
.fini output sections respectively, because glibc splits the
|
| 11116 |
|
|
_init and _fini functions into multiple parts. Putting a stub in
|
| 11117 |
|
|
the middle of a function is not a good idea. */
|
| 11118 |
|
|
|
| 11119 |
|
|
static void
|
| 11120 |
|
|
group_sections (struct ppc_link_hash_table *htab,
|
| 11121 |
|
|
bfd_size_type stub_group_size,
|
| 11122 |
|
|
bfd_boolean stubs_always_before_branch)
|
| 11123 |
|
|
{
|
| 11124 |
|
|
asection **list;
|
| 11125 |
|
|
bfd_size_type stub14_group_size;
|
| 11126 |
|
|
bfd_boolean suppress_size_errors;
|
| 11127 |
|
|
|
| 11128 |
|
|
suppress_size_errors = FALSE;
|
| 11129 |
|
|
stub14_group_size = stub_group_size;
|
| 11130 |
|
|
if (stub_group_size == 1)
|
| 11131 |
|
|
{
|
| 11132 |
|
|
/* Default values. */
|
| 11133 |
|
|
if (stubs_always_before_branch)
|
| 11134 |
|
|
{
|
| 11135 |
|
|
stub_group_size = 0x1e00000;
|
| 11136 |
|
|
stub14_group_size = 0x7800;
|
| 11137 |
|
|
}
|
| 11138 |
|
|
else
|
| 11139 |
|
|
{
|
| 11140 |
|
|
stub_group_size = 0x1c00000;
|
| 11141 |
|
|
stub14_group_size = 0x7000;
|
| 11142 |
|
|
}
|
| 11143 |
|
|
suppress_size_errors = TRUE;
|
| 11144 |
|
|
}
|
| 11145 |
|
|
|
| 11146 |
|
|
list = htab->input_list + htab->top_index;
|
| 11147 |
|
|
do
|
| 11148 |
|
|
{
|
| 11149 |
|
|
asection *tail = *list;
|
| 11150 |
|
|
while (tail != NULL)
|
| 11151 |
|
|
{
|
| 11152 |
|
|
asection *curr;
|
| 11153 |
|
|
asection *prev;
|
| 11154 |
|
|
bfd_size_type total;
|
| 11155 |
|
|
bfd_boolean big_sec;
|
| 11156 |
|
|
bfd_vma curr_toc;
|
| 11157 |
|
|
|
| 11158 |
|
|
curr = tail;
|
| 11159 |
|
|
total = tail->size;
|
| 11160 |
|
|
big_sec = total > (ppc64_elf_section_data (tail) != NULL
|
| 11161 |
|
|
&& ppc64_elf_section_data (tail)->has_14bit_branch
|
| 11162 |
|
|
? stub14_group_size : stub_group_size);
|
| 11163 |
|
|
if (big_sec && !suppress_size_errors)
|
| 11164 |
|
|
(*_bfd_error_handler) (_("%B section %A exceeds stub group size"),
|
| 11165 |
|
|
tail->owner, tail);
|
| 11166 |
|
|
curr_toc = htab->stub_group[tail->id].toc_off;
|
| 11167 |
|
|
|
| 11168 |
|
|
while ((prev = PREV_SEC (curr)) != NULL
|
| 11169 |
|
|
&& ((total += curr->output_offset - prev->output_offset)
|
| 11170 |
|
|
< (ppc64_elf_section_data (prev) != NULL
|
| 11171 |
|
|
&& ppc64_elf_section_data (prev)->has_14bit_branch
|
| 11172 |
|
|
? stub14_group_size : stub_group_size))
|
| 11173 |
|
|
&& htab->stub_group[prev->id].toc_off == curr_toc)
|
| 11174 |
|
|
curr = prev;
|
| 11175 |
|
|
|
| 11176 |
|
|
/* OK, the size from the start of CURR to the end is less
|
| 11177 |
|
|
than stub_group_size and thus can be handled by one stub
|
| 11178 |
|
|
section. (or the tail section is itself larger than
|
| 11179 |
|
|
stub_group_size, in which case we may be toast.) We
|
| 11180 |
|
|
should really be keeping track of the total size of stubs
|
| 11181 |
|
|
added here, as stubs contribute to the final output
|
| 11182 |
|
|
section size. That's a little tricky, and this way will
|
| 11183 |
|
|
only break if stubs added make the total size more than
|
| 11184 |
|
|
2^25, ie. for the default stub_group_size, if stubs total
|
| 11185 |
|
|
more than 2097152 bytes, or nearly 75000 plt call stubs. */
|
| 11186 |
|
|
do
|
| 11187 |
|
|
{
|
| 11188 |
|
|
prev = PREV_SEC (tail);
|
| 11189 |
|
|
/* Set up this stub group. */
|
| 11190 |
|
|
htab->stub_group[tail->id].link_sec = curr;
|
| 11191 |
|
|
}
|
| 11192 |
|
|
while (tail != curr && (tail = prev) != NULL);
|
| 11193 |
|
|
|
| 11194 |
|
|
/* But wait, there's more! Input sections up to stub_group_size
|
| 11195 |
|
|
bytes before the stub section can be handled by it too.
|
| 11196 |
|
|
Don't do this if we have a really large section after the
|
| 11197 |
|
|
stubs, as adding more stubs increases the chance that
|
| 11198 |
|
|
branches may not reach into the stub section. */
|
| 11199 |
|
|
if (!stubs_always_before_branch && !big_sec)
|
| 11200 |
|
|
{
|
| 11201 |
|
|
total = 0;
|
| 11202 |
|
|
while (prev != NULL
|
| 11203 |
|
|
&& ((total += tail->output_offset - prev->output_offset)
|
| 11204 |
|
|
< (ppc64_elf_section_data (prev) != NULL
|
| 11205 |
|
|
&& ppc64_elf_section_data (prev)->has_14bit_branch
|
| 11206 |
|
|
? stub14_group_size : stub_group_size))
|
| 11207 |
|
|
&& htab->stub_group[prev->id].toc_off == curr_toc)
|
| 11208 |
|
|
{
|
| 11209 |
|
|
tail = prev;
|
| 11210 |
|
|
prev = PREV_SEC (tail);
|
| 11211 |
|
|
htab->stub_group[tail->id].link_sec = curr;
|
| 11212 |
|
|
}
|
| 11213 |
|
|
}
|
| 11214 |
|
|
tail = prev;
|
| 11215 |
|
|
}
|
| 11216 |
|
|
}
|
| 11217 |
|
|
while (list-- != htab->input_list);
|
| 11218 |
|
|
free (htab->input_list);
|
| 11219 |
|
|
#undef PREV_SEC
|
| 11220 |
|
|
}
|
| 11221 |
|
|
|
| 11222 |
161 |
khays |
static const unsigned char glink_eh_frame_cie[] =
|
| 11223 |
|
|
{
|
| 11224 |
|
|
0, 0, 0, 16, /* length. */
|
| 11225 |
|
|
0, 0, 0, 0, /* id. */
|
| 11226 |
|
|
1, /* CIE version. */
|
| 11227 |
|
|
'z', 'R', 0, /* Augmentation string. */
|
| 11228 |
|
|
4, /* Code alignment. */
|
| 11229 |
|
|
0x78, /* Data alignment. */
|
| 11230 |
|
|
65, /* RA reg. */
|
| 11231 |
|
|
1, /* Augmentation size. */
|
| 11232 |
|
|
DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
|
| 11233 |
|
|
DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
|
| 11234 |
|
|
};
|
| 11235 |
|
|
|
| 11236 |
|
|
/* Stripping output sections is normally done before dynamic section
|
| 11237 |
|
|
symbols have been allocated. This function is called later, and
|
| 11238 |
|
|
handles cases like htab->brlt which is mapped to its own output
|
| 11239 |
|
|
section. */
|
| 11240 |
|
|
|
| 11241 |
|
|
static void
|
| 11242 |
|
|
maybe_strip_output (struct bfd_link_info *info, asection *isec)
|
| 11243 |
|
|
{
|
| 11244 |
|
|
if (isec->size == 0
|
| 11245 |
|
|
&& isec->output_section->size == 0
|
| 11246 |
|
|
&& !bfd_section_removed_from_list (info->output_bfd,
|
| 11247 |
|
|
isec->output_section)
|
| 11248 |
|
|
&& elf_section_data (isec->output_section)->dynindx == 0)
|
| 11249 |
|
|
{
|
| 11250 |
|
|
isec->output_section->flags |= SEC_EXCLUDE;
|
| 11251 |
|
|
bfd_section_list_remove (info->output_bfd, isec->output_section);
|
| 11252 |
|
|
info->output_bfd->section_count--;
|
| 11253 |
|
|
}
|
| 11254 |
|
|
}
|
| 11255 |
|
|
|
| 11256 |
14 |
khays |
/* Determine and set the size of the stub section for a final link.
|
| 11257 |
|
|
|
| 11258 |
|
|
The basic idea here is to examine all the relocations looking for
|
| 11259 |
|
|
PC-relative calls to a target that is unreachable with a "bl"
|
| 11260 |
|
|
instruction. */
|
| 11261 |
|
|
|
| 11262 |
|
|
bfd_boolean
|
| 11263 |
161 |
khays |
ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size,
|
| 11264 |
166 |
khays |
bfd_boolean plt_static_chain, int plt_thread_safe,
|
| 11265 |
|
|
int plt_stub_align)
|
| 11266 |
14 |
khays |
{
|
| 11267 |
|
|
bfd_size_type stub_group_size;
|
| 11268 |
|
|
bfd_boolean stubs_always_before_branch;
|
| 11269 |
|
|
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
| 11270 |
|
|
|
| 11271 |
|
|
if (htab == NULL)
|
| 11272 |
|
|
return FALSE;
|
| 11273 |
|
|
|
| 11274 |
161 |
khays |
htab->plt_static_chain = plt_static_chain;
|
| 11275 |
166 |
khays |
htab->plt_stub_align = plt_stub_align;
|
| 11276 |
|
|
if (plt_thread_safe == -1)
|
| 11277 |
|
|
{
|
| 11278 |
|
|
const char *const thread_starter[] =
|
| 11279 |
|
|
{
|
| 11280 |
|
|
"pthread_create",
|
| 11281 |
|
|
/* libstdc++ */
|
| 11282 |
|
|
"_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE",
|
| 11283 |
|
|
/* librt */
|
| 11284 |
|
|
"aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio",
|
| 11285 |
|
|
"mq_notify", "create_timer",
|
| 11286 |
|
|
/* libanl */
|
| 11287 |
|
|
"getaddrinfo_a",
|
| 11288 |
|
|
/* libgomp */
|
| 11289 |
|
|
"GOMP_parallel_start",
|
| 11290 |
|
|
"GOMP_parallel_loop_static_start",
|
| 11291 |
|
|
"GOMP_parallel_loop_dynamic_start",
|
| 11292 |
|
|
"GOMP_parallel_loop_guided_start",
|
| 11293 |
|
|
"GOMP_parallel_loop_runtime_start",
|
| 11294 |
|
|
"GOMP_parallel_sections_start",
|
| 11295 |
|
|
};
|
| 11296 |
|
|
unsigned i;
|
| 11297 |
|
|
|
| 11298 |
|
|
for (i = 0; i < sizeof (thread_starter)/ sizeof (thread_starter[0]); i++)
|
| 11299 |
|
|
{
|
| 11300 |
|
|
struct elf_link_hash_entry *h;
|
| 11301 |
|
|
h = elf_link_hash_lookup (&htab->elf, thread_starter[i],
|
| 11302 |
|
|
FALSE, FALSE, TRUE);
|
| 11303 |
|
|
plt_thread_safe = h != NULL && h->ref_regular;
|
| 11304 |
|
|
if (plt_thread_safe)
|
| 11305 |
|
|
break;
|
| 11306 |
|
|
}
|
| 11307 |
|
|
}
|
| 11308 |
|
|
htab->plt_thread_safe = plt_thread_safe;
|
| 11309 |
14 |
khays |
stubs_always_before_branch = group_size < 0;
|
| 11310 |
|
|
if (group_size < 0)
|
| 11311 |
|
|
stub_group_size = -group_size;
|
| 11312 |
|
|
else
|
| 11313 |
|
|
stub_group_size = group_size;
|
| 11314 |
|
|
|
| 11315 |
|
|
group_sections (htab, stub_group_size, stubs_always_before_branch);
|
| 11316 |
|
|
|
| 11317 |
|
|
while (1)
|
| 11318 |
|
|
{
|
| 11319 |
|
|
bfd *input_bfd;
|
| 11320 |
|
|
unsigned int bfd_indx;
|
| 11321 |
|
|
asection *stub_sec;
|
| 11322 |
|
|
|
| 11323 |
|
|
htab->stub_iteration += 1;
|
| 11324 |
|
|
|
| 11325 |
|
|
for (input_bfd = info->input_bfds, bfd_indx = 0;
|
| 11326 |
|
|
input_bfd != NULL;
|
| 11327 |
|
|
input_bfd = input_bfd->link_next, bfd_indx++)
|
| 11328 |
|
|
{
|
| 11329 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 11330 |
|
|
asection *section;
|
| 11331 |
|
|
Elf_Internal_Sym *local_syms = NULL;
|
| 11332 |
|
|
|
| 11333 |
|
|
if (!is_ppc64_elf (input_bfd))
|
| 11334 |
|
|
continue;
|
| 11335 |
|
|
|
| 11336 |
|
|
/* We'll need the symbol table in a second. */
|
| 11337 |
|
|
symtab_hdr = &elf_symtab_hdr (input_bfd);
|
| 11338 |
|
|
if (symtab_hdr->sh_info == 0)
|
| 11339 |
|
|
continue;
|
| 11340 |
|
|
|
| 11341 |
|
|
/* Walk over each section attached to the input bfd. */
|
| 11342 |
|
|
for (section = input_bfd->sections;
|
| 11343 |
|
|
section != NULL;
|
| 11344 |
|
|
section = section->next)
|
| 11345 |
|
|
{
|
| 11346 |
|
|
Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
|
| 11347 |
|
|
|
| 11348 |
|
|
/* If there aren't any relocs, then there's nothing more
|
| 11349 |
|
|
to do. */
|
| 11350 |
|
|
if ((section->flags & SEC_RELOC) == 0
|
| 11351 |
|
|
|| (section->flags & SEC_ALLOC) == 0
|
| 11352 |
|
|
|| (section->flags & SEC_LOAD) == 0
|
| 11353 |
|
|
|| (section->flags & SEC_CODE) == 0
|
| 11354 |
|
|
|| section->reloc_count == 0)
|
| 11355 |
|
|
continue;
|
| 11356 |
|
|
|
| 11357 |
|
|
/* If this section is a link-once section that will be
|
| 11358 |
|
|
discarded, then don't create any stubs. */
|
| 11359 |
|
|
if (section->output_section == NULL
|
| 11360 |
|
|
|| section->output_section->owner != info->output_bfd)
|
| 11361 |
|
|
continue;
|
| 11362 |
|
|
|
| 11363 |
|
|
/* Get the relocs. */
|
| 11364 |
|
|
internal_relocs
|
| 11365 |
|
|
= _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL,
|
| 11366 |
|
|
info->keep_memory);
|
| 11367 |
|
|
if (internal_relocs == NULL)
|
| 11368 |
|
|
goto error_ret_free_local;
|
| 11369 |
|
|
|
| 11370 |
|
|
/* Now examine each relocation. */
|
| 11371 |
|
|
irela = internal_relocs;
|
| 11372 |
|
|
irelaend = irela + section->reloc_count;
|
| 11373 |
|
|
for (; irela < irelaend; irela++)
|
| 11374 |
|
|
{
|
| 11375 |
|
|
enum elf_ppc64_reloc_type r_type;
|
| 11376 |
|
|
unsigned int r_indx;
|
| 11377 |
|
|
enum ppc_stub_type stub_type;
|
| 11378 |
|
|
struct ppc_stub_hash_entry *stub_entry;
|
| 11379 |
|
|
asection *sym_sec, *code_sec;
|
| 11380 |
|
|
bfd_vma sym_value, code_value;
|
| 11381 |
|
|
bfd_vma destination;
|
| 11382 |
|
|
bfd_boolean ok_dest;
|
| 11383 |
|
|
struct ppc_link_hash_entry *hash;
|
| 11384 |
|
|
struct ppc_link_hash_entry *fdh;
|
| 11385 |
|
|
struct elf_link_hash_entry *h;
|
| 11386 |
|
|
Elf_Internal_Sym *sym;
|
| 11387 |
|
|
char *stub_name;
|
| 11388 |
|
|
const asection *id_sec;
|
| 11389 |
|
|
struct _opd_sec_data *opd;
|
| 11390 |
|
|
struct plt_entry *plt_ent;
|
| 11391 |
|
|
|
| 11392 |
|
|
r_type = ELF64_R_TYPE (irela->r_info);
|
| 11393 |
|
|
r_indx = ELF64_R_SYM (irela->r_info);
|
| 11394 |
|
|
|
| 11395 |
|
|
if (r_type >= R_PPC64_max)
|
| 11396 |
|
|
{
|
| 11397 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 11398 |
|
|
goto error_ret_free_internal;
|
| 11399 |
|
|
}
|
| 11400 |
|
|
|
| 11401 |
|
|
/* Only look for stubs on branch instructions. */
|
| 11402 |
|
|
if (r_type != R_PPC64_REL24
|
| 11403 |
|
|
&& r_type != R_PPC64_REL14
|
| 11404 |
|
|
&& r_type != R_PPC64_REL14_BRTAKEN
|
| 11405 |
|
|
&& r_type != R_PPC64_REL14_BRNTAKEN)
|
| 11406 |
|
|
continue;
|
| 11407 |
|
|
|
| 11408 |
|
|
/* Now determine the call target, its name, value,
|
| 11409 |
|
|
section. */
|
| 11410 |
|
|
if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms,
|
| 11411 |
|
|
r_indx, input_bfd))
|
| 11412 |
|
|
goto error_ret_free_internal;
|
| 11413 |
|
|
hash = (struct ppc_link_hash_entry *) h;
|
| 11414 |
|
|
|
| 11415 |
|
|
ok_dest = FALSE;
|
| 11416 |
|
|
fdh = NULL;
|
| 11417 |
|
|
sym_value = 0;
|
| 11418 |
|
|
if (hash == NULL)
|
| 11419 |
|
|
{
|
| 11420 |
|
|
sym_value = sym->st_value;
|
| 11421 |
|
|
ok_dest = TRUE;
|
| 11422 |
|
|
}
|
| 11423 |
|
|
else if (hash->elf.root.type == bfd_link_hash_defined
|
| 11424 |
|
|
|| hash->elf.root.type == bfd_link_hash_defweak)
|
| 11425 |
|
|
{
|
| 11426 |
|
|
sym_value = hash->elf.root.u.def.value;
|
| 11427 |
|
|
if (sym_sec->output_section != NULL)
|
| 11428 |
|
|
ok_dest = TRUE;
|
| 11429 |
|
|
}
|
| 11430 |
|
|
else if (hash->elf.root.type == bfd_link_hash_undefweak
|
| 11431 |
|
|
|| hash->elf.root.type == bfd_link_hash_undefined)
|
| 11432 |
|
|
{
|
| 11433 |
|
|
/* Recognise an old ABI func code entry sym, and
|
| 11434 |
|
|
use the func descriptor sym instead if it is
|
| 11435 |
|
|
defined. */
|
| 11436 |
|
|
if (hash->elf.root.root.string[0] == '.'
|
| 11437 |
|
|
&& (fdh = lookup_fdh (hash, htab)) != NULL)
|
| 11438 |
|
|
{
|
| 11439 |
|
|
if (fdh->elf.root.type == bfd_link_hash_defined
|
| 11440 |
|
|
|| fdh->elf.root.type == bfd_link_hash_defweak)
|
| 11441 |
|
|
{
|
| 11442 |
|
|
sym_sec = fdh->elf.root.u.def.section;
|
| 11443 |
|
|
sym_value = fdh->elf.root.u.def.value;
|
| 11444 |
|
|
if (sym_sec->output_section != NULL)
|
| 11445 |
|
|
ok_dest = TRUE;
|
| 11446 |
|
|
}
|
| 11447 |
|
|
else
|
| 11448 |
|
|
fdh = NULL;
|
| 11449 |
|
|
}
|
| 11450 |
|
|
}
|
| 11451 |
|
|
else
|
| 11452 |
|
|
{
|
| 11453 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 11454 |
|
|
goto error_ret_free_internal;
|
| 11455 |
|
|
}
|
| 11456 |
|
|
|
| 11457 |
|
|
destination = 0;
|
| 11458 |
|
|
if (ok_dest)
|
| 11459 |
|
|
{
|
| 11460 |
|
|
sym_value += irela->r_addend;
|
| 11461 |
|
|
destination = (sym_value
|
| 11462 |
|
|
+ sym_sec->output_offset
|
| 11463 |
|
|
+ sym_sec->output_section->vma);
|
| 11464 |
|
|
}
|
| 11465 |
|
|
|
| 11466 |
|
|
code_sec = sym_sec;
|
| 11467 |
|
|
code_value = sym_value;
|
| 11468 |
|
|
opd = get_opd_info (sym_sec);
|
| 11469 |
|
|
if (opd != NULL)
|
| 11470 |
|
|
{
|
| 11471 |
|
|
bfd_vma dest;
|
| 11472 |
|
|
|
| 11473 |
|
|
if (hash == NULL && opd->adjust != NULL)
|
| 11474 |
|
|
{
|
| 11475 |
|
|
long adjust = opd->adjust[sym_value / 8];
|
| 11476 |
|
|
if (adjust == -1)
|
| 11477 |
|
|
continue;
|
| 11478 |
|
|
code_value += adjust;
|
| 11479 |
|
|
sym_value += adjust;
|
| 11480 |
|
|
}
|
| 11481 |
|
|
dest = opd_entry_value (sym_sec, sym_value,
|
| 11482 |
|
|
&code_sec, &code_value);
|
| 11483 |
|
|
if (dest != (bfd_vma) -1)
|
| 11484 |
|
|
{
|
| 11485 |
|
|
destination = dest;
|
| 11486 |
|
|
if (fdh != NULL)
|
| 11487 |
|
|
{
|
| 11488 |
|
|
/* Fixup old ABI sym to point at code
|
| 11489 |
|
|
entry. */
|
| 11490 |
|
|
hash->elf.root.type = bfd_link_hash_defweak;
|
| 11491 |
|
|
hash->elf.root.u.def.section = code_sec;
|
| 11492 |
|
|
hash->elf.root.u.def.value = code_value;
|
| 11493 |
|
|
}
|
| 11494 |
|
|
}
|
| 11495 |
|
|
}
|
| 11496 |
|
|
|
| 11497 |
|
|
/* Determine what (if any) linker stub is needed. */
|
| 11498 |
|
|
plt_ent = NULL;
|
| 11499 |
|
|
stub_type = ppc_type_of_stub (section, irela, &hash,
|
| 11500 |
|
|
&plt_ent, destination);
|
| 11501 |
|
|
|
| 11502 |
|
|
if (stub_type != ppc_stub_plt_call)
|
| 11503 |
|
|
{
|
| 11504 |
|
|
/* Check whether we need a TOC adjusting stub.
|
| 11505 |
|
|
Since the linker pastes together pieces from
|
| 11506 |
|
|
different object files when creating the
|
| 11507 |
|
|
_init and _fini functions, it may be that a
|
| 11508 |
|
|
call to what looks like a local sym is in
|
| 11509 |
|
|
fact a call needing a TOC adjustment. */
|
| 11510 |
|
|
if (code_sec != NULL
|
| 11511 |
|
|
&& code_sec->output_section != NULL
|
| 11512 |
|
|
&& (htab->stub_group[code_sec->id].toc_off
|
| 11513 |
|
|
!= htab->stub_group[section->id].toc_off)
|
| 11514 |
|
|
&& (code_sec->has_toc_reloc
|
| 11515 |
|
|
|| code_sec->makes_toc_func_call))
|
| 11516 |
|
|
stub_type = ppc_stub_long_branch_r2off;
|
| 11517 |
|
|
}
|
| 11518 |
|
|
|
| 11519 |
|
|
if (stub_type == ppc_stub_none)
|
| 11520 |
|
|
continue;
|
| 11521 |
|
|
|
| 11522 |
|
|
/* __tls_get_addr calls might be eliminated. */
|
| 11523 |
|
|
if (stub_type != ppc_stub_plt_call
|
| 11524 |
|
|
&& hash != NULL
|
| 11525 |
|
|
&& (hash == htab->tls_get_addr
|
| 11526 |
|
|
|| hash == htab->tls_get_addr_fd)
|
| 11527 |
|
|
&& section->has_tls_reloc
|
| 11528 |
|
|
&& irela != internal_relocs)
|
| 11529 |
|
|
{
|
| 11530 |
|
|
/* Get tls info. */
|
| 11531 |
|
|
unsigned char *tls_mask;
|
| 11532 |
|
|
|
| 11533 |
|
|
if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms,
|
| 11534 |
|
|
irela - 1, input_bfd))
|
| 11535 |
|
|
goto error_ret_free_internal;
|
| 11536 |
|
|
if (*tls_mask != 0)
|
| 11537 |
|
|
continue;
|
| 11538 |
|
|
}
|
| 11539 |
|
|
|
| 11540 |
163 |
khays |
if (stub_type == ppc_stub_plt_call
|
| 11541 |
|
|
&& irela + 1 < irelaend
|
| 11542 |
|
|
&& irela[1].r_offset == irela->r_offset + 4
|
| 11543 |
166 |
khays |
&& ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE)
|
| 11544 |
|
|
{
|
| 11545 |
|
|
if (!tocsave_find (htab, INSERT,
|
| 11546 |
|
|
&local_syms, irela + 1, input_bfd))
|
| 11547 |
|
|
goto error_ret_free_internal;
|
| 11548 |
|
|
}
|
| 11549 |
|
|
else if (stub_type == ppc_stub_plt_call)
|
| 11550 |
|
|
stub_type = ppc_stub_plt_call_r2save;
|
| 11551 |
163 |
khays |
|
| 11552 |
14 |
khays |
/* Support for grouping stub sections. */
|
| 11553 |
|
|
id_sec = htab->stub_group[section->id].link_sec;
|
| 11554 |
|
|
|
| 11555 |
|
|
/* Get the name of this stub. */
|
| 11556 |
|
|
stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
|
| 11557 |
|
|
if (!stub_name)
|
| 11558 |
|
|
goto error_ret_free_internal;
|
| 11559 |
|
|
|
| 11560 |
|
|
stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
|
| 11561 |
|
|
stub_name, FALSE, FALSE);
|
| 11562 |
|
|
if (stub_entry != NULL)
|
| 11563 |
|
|
{
|
| 11564 |
|
|
/* The proper stub has already been created. */
|
| 11565 |
|
|
free (stub_name);
|
| 11566 |
166 |
khays |
if (stub_type == ppc_stub_plt_call_r2save)
|
| 11567 |
|
|
stub_entry->stub_type = stub_type;
|
| 11568 |
14 |
khays |
continue;
|
| 11569 |
|
|
}
|
| 11570 |
|
|
|
| 11571 |
|
|
stub_entry = ppc_add_stub (stub_name, section, info);
|
| 11572 |
|
|
if (stub_entry == NULL)
|
| 11573 |
|
|
{
|
| 11574 |
|
|
free (stub_name);
|
| 11575 |
|
|
error_ret_free_internal:
|
| 11576 |
|
|
if (elf_section_data (section)->relocs == NULL)
|
| 11577 |
|
|
free (internal_relocs);
|
| 11578 |
|
|
error_ret_free_local:
|
| 11579 |
|
|
if (local_syms != NULL
|
| 11580 |
|
|
&& (symtab_hdr->contents
|
| 11581 |
|
|
!= (unsigned char *) local_syms))
|
| 11582 |
|
|
free (local_syms);
|
| 11583 |
|
|
return FALSE;
|
| 11584 |
|
|
}
|
| 11585 |
|
|
|
| 11586 |
|
|
stub_entry->stub_type = stub_type;
|
| 11587 |
166 |
khays |
if (stub_type != ppc_stub_plt_call
|
| 11588 |
|
|
&& stub_type != ppc_stub_plt_call_r2save)
|
| 11589 |
14 |
khays |
{
|
| 11590 |
|
|
stub_entry->target_value = code_value;
|
| 11591 |
|
|
stub_entry->target_section = code_sec;
|
| 11592 |
|
|
}
|
| 11593 |
|
|
else
|
| 11594 |
|
|
{
|
| 11595 |
|
|
stub_entry->target_value = sym_value;
|
| 11596 |
|
|
stub_entry->target_section = sym_sec;
|
| 11597 |
|
|
}
|
| 11598 |
|
|
stub_entry->h = hash;
|
| 11599 |
|
|
stub_entry->plt_ent = plt_ent;
|
| 11600 |
|
|
stub_entry->addend = irela->r_addend;
|
| 11601 |
|
|
|
| 11602 |
|
|
if (stub_entry->h != NULL)
|
| 11603 |
|
|
htab->stub_globals += 1;
|
| 11604 |
|
|
}
|
| 11605 |
|
|
|
| 11606 |
|
|
/* We're done with the internal relocs, free them. */
|
| 11607 |
|
|
if (elf_section_data (section)->relocs != internal_relocs)
|
| 11608 |
|
|
free (internal_relocs);
|
| 11609 |
|
|
}
|
| 11610 |
|
|
|
| 11611 |
|
|
if (local_syms != NULL
|
| 11612 |
|
|
&& symtab_hdr->contents != (unsigned char *) local_syms)
|
| 11613 |
|
|
{
|
| 11614 |
|
|
if (!info->keep_memory)
|
| 11615 |
|
|
free (local_syms);
|
| 11616 |
|
|
else
|
| 11617 |
|
|
symtab_hdr->contents = (unsigned char *) local_syms;
|
| 11618 |
|
|
}
|
| 11619 |
|
|
}
|
| 11620 |
|
|
|
| 11621 |
|
|
/* We may have added some stubs. Find out the new size of the
|
| 11622 |
|
|
stub sections. */
|
| 11623 |
|
|
for (stub_sec = htab->stub_bfd->sections;
|
| 11624 |
|
|
stub_sec != NULL;
|
| 11625 |
|
|
stub_sec = stub_sec->next)
|
| 11626 |
|
|
if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
|
| 11627 |
|
|
{
|
| 11628 |
|
|
stub_sec->rawsize = stub_sec->size;
|
| 11629 |
|
|
stub_sec->size = 0;
|
| 11630 |
|
|
stub_sec->reloc_count = 0;
|
| 11631 |
|
|
stub_sec->flags &= ~SEC_RELOC;
|
| 11632 |
|
|
}
|
| 11633 |
|
|
|
| 11634 |
|
|
htab->brlt->size = 0;
|
| 11635 |
|
|
htab->brlt->reloc_count = 0;
|
| 11636 |
|
|
htab->brlt->flags &= ~SEC_RELOC;
|
| 11637 |
|
|
if (htab->relbrlt != NULL)
|
| 11638 |
|
|
htab->relbrlt->size = 0;
|
| 11639 |
|
|
|
| 11640 |
|
|
bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info);
|
| 11641 |
|
|
|
| 11642 |
|
|
if (info->emitrelocations
|
| 11643 |
|
|
&& htab->glink != NULL && htab->glink->size != 0)
|
| 11644 |
|
|
{
|
| 11645 |
|
|
htab->glink->reloc_count = 1;
|
| 11646 |
|
|
htab->glink->flags |= SEC_RELOC;
|
| 11647 |
|
|
}
|
| 11648 |
|
|
|
| 11649 |
161 |
khays |
if (htab->glink_eh_frame != NULL
|
| 11650 |
|
|
&& !bfd_is_abs_section (htab->glink_eh_frame->output_section)
|
| 11651 |
|
|
&& (htab->glink_eh_frame->flags & SEC_EXCLUDE) == 0)
|
| 11652 |
|
|
{
|
| 11653 |
|
|
bfd_size_type size = 0;
|
| 11654 |
|
|
|
| 11655 |
|
|
for (stub_sec = htab->stub_bfd->sections;
|
| 11656 |
|
|
stub_sec != NULL;
|
| 11657 |
|
|
stub_sec = stub_sec->next)
|
| 11658 |
|
|
if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
|
| 11659 |
|
|
size += 20;
|
| 11660 |
|
|
if (htab->glink != NULL && htab->glink->size != 0)
|
| 11661 |
|
|
size += 24;
|
| 11662 |
|
|
if (size != 0)
|
| 11663 |
|
|
size += sizeof (glink_eh_frame_cie);
|
| 11664 |
|
|
htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
|
| 11665 |
|
|
htab->glink_eh_frame->size = size;
|
| 11666 |
|
|
}
|
| 11667 |
|
|
|
| 11668 |
166 |
khays |
if (htab->plt_stub_align != 0)
|
| 11669 |
|
|
for (stub_sec = htab->stub_bfd->sections;
|
| 11670 |
|
|
stub_sec != NULL;
|
| 11671 |
|
|
stub_sec = stub_sec->next)
|
| 11672 |
|
|
if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
|
| 11673 |
|
|
stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
|
| 11674 |
|
|
& (-1 << htab->plt_stub_align));
|
| 11675 |
|
|
|
| 11676 |
14 |
khays |
for (stub_sec = htab->stub_bfd->sections;
|
| 11677 |
|
|
stub_sec != NULL;
|
| 11678 |
|
|
stub_sec = stub_sec->next)
|
| 11679 |
|
|
if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
|
| 11680 |
|
|
&& stub_sec->rawsize != stub_sec->size)
|
| 11681 |
|
|
break;
|
| 11682 |
|
|
|
| 11683 |
|
|
/* Exit from this loop when no stubs have been added, and no stubs
|
| 11684 |
|
|
have changed size. */
|
| 11685 |
161 |
khays |
if (stub_sec == NULL
|
| 11686 |
|
|
&& (htab->glink_eh_frame == NULL
|
| 11687 |
|
|
|| htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size))
|
| 11688 |
14 |
khays |
break;
|
| 11689 |
|
|
|
| 11690 |
|
|
/* Ask the linker to do its stuff. */
|
| 11691 |
|
|
(*htab->layout_sections_again) ();
|
| 11692 |
|
|
}
|
| 11693 |
|
|
|
| 11694 |
161 |
khays |
maybe_strip_output (info, htab->brlt);
|
| 11695 |
|
|
if (htab->glink_eh_frame != NULL)
|
| 11696 |
|
|
maybe_strip_output (info, htab->glink_eh_frame);
|
| 11697 |
14 |
khays |
|
| 11698 |
|
|
return TRUE;
|
| 11699 |
|
|
}
|
| 11700 |
|
|
|
| 11701 |
|
|
/* Called after we have determined section placement. If sections
|
| 11702 |
|
|
move, we'll be called again. Provide a value for TOCstart. */
|
| 11703 |
|
|
|
| 11704 |
|
|
bfd_vma
|
| 11705 |
|
|
ppc64_elf_toc (bfd *obfd)
|
| 11706 |
|
|
{
|
| 11707 |
|
|
asection *s;
|
| 11708 |
|
|
bfd_vma TOCstart;
|
| 11709 |
|
|
|
| 11710 |
|
|
/* The TOC consists of sections .got, .toc, .tocbss, .plt in that
|
| 11711 |
|
|
order. The TOC starts where the first of these sections starts. */
|
| 11712 |
|
|
s = bfd_get_section_by_name (obfd, ".got");
|
| 11713 |
|
|
if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
|
| 11714 |
|
|
s = bfd_get_section_by_name (obfd, ".toc");
|
| 11715 |
|
|
if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
|
| 11716 |
|
|
s = bfd_get_section_by_name (obfd, ".tocbss");
|
| 11717 |
|
|
if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
|
| 11718 |
|
|
s = bfd_get_section_by_name (obfd, ".plt");
|
| 11719 |
|
|
if (s == NULL || (s->flags & SEC_EXCLUDE) != 0)
|
| 11720 |
|
|
{
|
| 11721 |
|
|
/* This may happen for
|
| 11722 |
|
|
o references to TOC base (SYM@toc / TOC[tc0]) without a
|
| 11723 |
|
|
.toc directive
|
| 11724 |
|
|
o bad linker script
|
| 11725 |
|
|
o --gc-sections and empty TOC sections
|
| 11726 |
|
|
|
| 11727 |
|
|
FIXME: Warn user? */
|
| 11728 |
|
|
|
| 11729 |
|
|
/* Look for a likely section. We probably won't even be
|
| 11730 |
|
|
using TOCstart. */
|
| 11731 |
|
|
for (s = obfd->sections; s != NULL; s = s->next)
|
| 11732 |
|
|
if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY
|
| 11733 |
|
|
| SEC_EXCLUDE))
|
| 11734 |
|
|
== (SEC_ALLOC | SEC_SMALL_DATA))
|
| 11735 |
|
|
break;
|
| 11736 |
|
|
if (s == NULL)
|
| 11737 |
|
|
for (s = obfd->sections; s != NULL; s = s->next)
|
| 11738 |
|
|
if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE))
|
| 11739 |
|
|
== (SEC_ALLOC | SEC_SMALL_DATA))
|
| 11740 |
|
|
break;
|
| 11741 |
|
|
if (s == NULL)
|
| 11742 |
|
|
for (s = obfd->sections; s != NULL; s = s->next)
|
| 11743 |
|
|
if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE))
|
| 11744 |
|
|
== SEC_ALLOC)
|
| 11745 |
|
|
break;
|
| 11746 |
|
|
if (s == NULL)
|
| 11747 |
|
|
for (s = obfd->sections; s != NULL; s = s->next)
|
| 11748 |
|
|
if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC)
|
| 11749 |
|
|
break;
|
| 11750 |
|
|
}
|
| 11751 |
|
|
|
| 11752 |
|
|
TOCstart = 0;
|
| 11753 |
|
|
if (s != NULL)
|
| 11754 |
|
|
TOCstart = s->output_section->vma + s->output_offset;
|
| 11755 |
|
|
|
| 11756 |
|
|
return TOCstart;
|
| 11757 |
|
|
}
|
| 11758 |
|
|
|
| 11759 |
|
|
/* Build all the stubs associated with the current output file.
|
| 11760 |
|
|
The stubs are kept in a hash table attached to the main linker
|
| 11761 |
|
|
hash table. This function is called via gldelf64ppc_finish. */
|
| 11762 |
|
|
|
| 11763 |
|
|
bfd_boolean
|
| 11764 |
|
|
ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
|
| 11765 |
|
|
struct bfd_link_info *info,
|
| 11766 |
|
|
char **stats)
|
| 11767 |
|
|
{
|
| 11768 |
|
|
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
| 11769 |
|
|
asection *stub_sec;
|
| 11770 |
|
|
bfd_byte *p;
|
| 11771 |
|
|
int stub_sec_count = 0;
|
| 11772 |
|
|
|
| 11773 |
|
|
if (htab == NULL)
|
| 11774 |
|
|
return FALSE;
|
| 11775 |
|
|
|
| 11776 |
|
|
htab->emit_stub_syms = emit_stub_syms;
|
| 11777 |
|
|
|
| 11778 |
|
|
/* Allocate memory to hold the linker stubs. */
|
| 11779 |
|
|
for (stub_sec = htab->stub_bfd->sections;
|
| 11780 |
|
|
stub_sec != NULL;
|
| 11781 |
|
|
stub_sec = stub_sec->next)
|
| 11782 |
|
|
if ((stub_sec->flags & SEC_LINKER_CREATED) == 0
|
| 11783 |
|
|
&& stub_sec->size != 0)
|
| 11784 |
|
|
{
|
| 11785 |
|
|
stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size);
|
| 11786 |
|
|
if (stub_sec->contents == NULL)
|
| 11787 |
|
|
return FALSE;
|
| 11788 |
|
|
/* We want to check that built size is the same as calculated
|
| 11789 |
|
|
size. rawsize is a convenient location to use. */
|
| 11790 |
|
|
stub_sec->rawsize = stub_sec->size;
|
| 11791 |
|
|
stub_sec->size = 0;
|
| 11792 |
|
|
}
|
| 11793 |
|
|
|
| 11794 |
|
|
if (htab->glink != NULL && htab->glink->size != 0)
|
| 11795 |
|
|
{
|
| 11796 |
|
|
unsigned int indx;
|
| 11797 |
|
|
bfd_vma plt0;
|
| 11798 |
|
|
|
| 11799 |
|
|
/* Build the .glink plt call stub. */
|
| 11800 |
|
|
if (htab->emit_stub_syms)
|
| 11801 |
|
|
{
|
| 11802 |
|
|
struct elf_link_hash_entry *h;
|
| 11803 |
|
|
h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
|
| 11804 |
|
|
TRUE, FALSE, FALSE);
|
| 11805 |
|
|
if (h == NULL)
|
| 11806 |
|
|
return FALSE;
|
| 11807 |
|
|
if (h->root.type == bfd_link_hash_new)
|
| 11808 |
|
|
{
|
| 11809 |
|
|
h->root.type = bfd_link_hash_defined;
|
| 11810 |
|
|
h->root.u.def.section = htab->glink;
|
| 11811 |
|
|
h->root.u.def.value = 8;
|
| 11812 |
|
|
h->ref_regular = 1;
|
| 11813 |
|
|
h->def_regular = 1;
|
| 11814 |
|
|
h->ref_regular_nonweak = 1;
|
| 11815 |
|
|
h->forced_local = 1;
|
| 11816 |
|
|
h->non_elf = 0;
|
| 11817 |
|
|
}
|
| 11818 |
|
|
}
|
| 11819 |
|
|
plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16;
|
| 11820 |
|
|
if (info->emitrelocations)
|
| 11821 |
|
|
{
|
| 11822 |
|
|
Elf_Internal_Rela *r = get_relocs (htab->glink, 1);
|
| 11823 |
|
|
if (r == NULL)
|
| 11824 |
|
|
return FALSE;
|
| 11825 |
|
|
r->r_offset = (htab->glink->output_offset
|
| 11826 |
|
|
+ htab->glink->output_section->vma);
|
| 11827 |
|
|
r->r_info = ELF64_R_INFO (0, R_PPC64_REL64);
|
| 11828 |
|
|
r->r_addend = plt0;
|
| 11829 |
|
|
}
|
| 11830 |
|
|
p = htab->glink->contents;
|
| 11831 |
|
|
plt0 -= htab->glink->output_section->vma + htab->glink->output_offset;
|
| 11832 |
|
|
bfd_put_64 (htab->glink->owner, plt0, p);
|
| 11833 |
|
|
p += 8;
|
| 11834 |
|
|
bfd_put_32 (htab->glink->owner, MFLR_R12, p);
|
| 11835 |
|
|
p += 4;
|
| 11836 |
|
|
bfd_put_32 (htab->glink->owner, BCL_20_31, p);
|
| 11837 |
|
|
p += 4;
|
| 11838 |
|
|
bfd_put_32 (htab->glink->owner, MFLR_R11, p);
|
| 11839 |
|
|
p += 4;
|
| 11840 |
|
|
bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p);
|
| 11841 |
|
|
p += 4;
|
| 11842 |
|
|
bfd_put_32 (htab->glink->owner, MTLR_R12, p);
|
| 11843 |
|
|
p += 4;
|
| 11844 |
|
|
bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p);
|
| 11845 |
|
|
p += 4;
|
| 11846 |
|
|
bfd_put_32 (htab->glink->owner, LD_R11_0R12, p);
|
| 11847 |
|
|
p += 4;
|
| 11848 |
|
|
bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p);
|
| 11849 |
|
|
p += 4;
|
| 11850 |
|
|
bfd_put_32 (htab->glink->owner, MTCTR_R11, p);
|
| 11851 |
|
|
p += 4;
|
| 11852 |
|
|
bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p);
|
| 11853 |
|
|
p += 4;
|
| 11854 |
|
|
bfd_put_32 (htab->glink->owner, BCTR, p);
|
| 11855 |
|
|
p += 4;
|
| 11856 |
|
|
while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE)
|
| 11857 |
|
|
{
|
| 11858 |
|
|
bfd_put_32 (htab->glink->owner, NOP, p);
|
| 11859 |
|
|
p += 4;
|
| 11860 |
|
|
}
|
| 11861 |
|
|
|
| 11862 |
|
|
/* Build the .glink lazy link call stubs. */
|
| 11863 |
|
|
indx = 0;
|
| 11864 |
|
|
while (p < htab->glink->contents + htab->glink->size)
|
| 11865 |
|
|
{
|
| 11866 |
|
|
if (indx < 0x8000)
|
| 11867 |
|
|
{
|
| 11868 |
|
|
bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p);
|
| 11869 |
|
|
p += 4;
|
| 11870 |
|
|
}
|
| 11871 |
|
|
else
|
| 11872 |
|
|
{
|
| 11873 |
|
|
bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p);
|
| 11874 |
|
|
p += 4;
|
| 11875 |
|
|
bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
|
| 11876 |
|
|
p += 4;
|
| 11877 |
|
|
}
|
| 11878 |
|
|
bfd_put_32 (htab->glink->owner,
|
| 11879 |
|
|
B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p);
|
| 11880 |
|
|
indx++;
|
| 11881 |
|
|
p += 4;
|
| 11882 |
|
|
}
|
| 11883 |
|
|
htab->glink->rawsize = p - htab->glink->contents;
|
| 11884 |
|
|
}
|
| 11885 |
|
|
|
| 11886 |
|
|
if (htab->brlt->size != 0)
|
| 11887 |
|
|
{
|
| 11888 |
|
|
htab->brlt->contents = bfd_zalloc (htab->brlt->owner,
|
| 11889 |
|
|
htab->brlt->size);
|
| 11890 |
|
|
if (htab->brlt->contents == NULL)
|
| 11891 |
|
|
return FALSE;
|
| 11892 |
|
|
}
|
| 11893 |
|
|
if (htab->relbrlt != NULL && htab->relbrlt->size != 0)
|
| 11894 |
|
|
{
|
| 11895 |
|
|
htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner,
|
| 11896 |
|
|
htab->relbrlt->size);
|
| 11897 |
|
|
if (htab->relbrlt->contents == NULL)
|
| 11898 |
|
|
return FALSE;
|
| 11899 |
|
|
}
|
| 11900 |
|
|
|
| 11901 |
161 |
khays |
if (htab->glink_eh_frame != NULL
|
| 11902 |
|
|
&& htab->glink_eh_frame->size != 0)
|
| 11903 |
|
|
{
|
| 11904 |
|
|
bfd_vma val;
|
| 11905 |
|
|
|
| 11906 |
|
|
p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
|
| 11907 |
|
|
if (p == NULL)
|
| 11908 |
|
|
return FALSE;
|
| 11909 |
|
|
htab->glink_eh_frame->contents = p;
|
| 11910 |
|
|
|
| 11911 |
|
|
htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
|
| 11912 |
|
|
|
| 11913 |
|
|
memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
|
| 11914 |
|
|
/* CIE length (rewrite in case little-endian). */
|
| 11915 |
|
|
bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
|
| 11916 |
|
|
p += sizeof (glink_eh_frame_cie);
|
| 11917 |
|
|
|
| 11918 |
|
|
for (stub_sec = htab->stub_bfd->sections;
|
| 11919 |
|
|
stub_sec != NULL;
|
| 11920 |
|
|
stub_sec = stub_sec->next)
|
| 11921 |
|
|
if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
|
| 11922 |
|
|
{
|
| 11923 |
|
|
/* FDE length. */
|
| 11924 |
|
|
bfd_put_32 (htab->elf.dynobj, 16, p);
|
| 11925 |
|
|
p += 4;
|
| 11926 |
|
|
/* CIE pointer. */
|
| 11927 |
|
|
val = p - htab->glink_eh_frame->contents;
|
| 11928 |
|
|
bfd_put_32 (htab->elf.dynobj, val, p);
|
| 11929 |
|
|
p += 4;
|
| 11930 |
|
|
/* Offset to stub section. */
|
| 11931 |
|
|
val = (stub_sec->output_section->vma
|
| 11932 |
|
|
+ stub_sec->output_offset);
|
| 11933 |
|
|
val -= (htab->glink_eh_frame->output_section->vma
|
| 11934 |
|
|
+ htab->glink_eh_frame->output_offset);
|
| 11935 |
|
|
val -= p - htab->glink_eh_frame->contents;
|
| 11936 |
|
|
if (val + 0x80000000 > 0xffffffff)
|
| 11937 |
|
|
{
|
| 11938 |
|
|
info->callbacks->einfo
|
| 11939 |
|
|
(_("%P: %s offset too large for .eh_frame sdata4 encoding"),
|
| 11940 |
|
|
stub_sec->name);
|
| 11941 |
|
|
return FALSE;
|
| 11942 |
|
|
}
|
| 11943 |
|
|
bfd_put_32 (htab->elf.dynobj, val, p);
|
| 11944 |
|
|
p += 4;
|
| 11945 |
|
|
/* stub section size. */
|
| 11946 |
|
|
bfd_put_32 (htab->elf.dynobj, stub_sec->rawsize, p);
|
| 11947 |
|
|
p += 4;
|
| 11948 |
|
|
/* Augmentation. */
|
| 11949 |
|
|
p += 1;
|
| 11950 |
|
|
/* Pad. */
|
| 11951 |
|
|
p += 3;
|
| 11952 |
|
|
}
|
| 11953 |
|
|
if (htab->glink != NULL && htab->glink->size != 0)
|
| 11954 |
|
|
{
|
| 11955 |
|
|
/* FDE length. */
|
| 11956 |
|
|
bfd_put_32 (htab->elf.dynobj, 20, p);
|
| 11957 |
|
|
p += 4;
|
| 11958 |
|
|
/* CIE pointer. */
|
| 11959 |
|
|
val = p - htab->glink_eh_frame->contents;
|
| 11960 |
|
|
bfd_put_32 (htab->elf.dynobj, val, p);
|
| 11961 |
|
|
p += 4;
|
| 11962 |
|
|
/* Offset to .glink. */
|
| 11963 |
|
|
val = (htab->glink->output_section->vma
|
| 11964 |
|
|
+ htab->glink->output_offset
|
| 11965 |
|
|
+ 8);
|
| 11966 |
|
|
val -= (htab->glink_eh_frame->output_section->vma
|
| 11967 |
|
|
+ htab->glink_eh_frame->output_offset);
|
| 11968 |
|
|
val -= p - htab->glink_eh_frame->contents;
|
| 11969 |
|
|
if (val + 0x80000000 > 0xffffffff)
|
| 11970 |
|
|
{
|
| 11971 |
|
|
info->callbacks->einfo
|
| 11972 |
|
|
(_("%P: %s offset too large for .eh_frame sdata4 encoding"),
|
| 11973 |
|
|
htab->glink->name);
|
| 11974 |
|
|
return FALSE;
|
| 11975 |
|
|
}
|
| 11976 |
|
|
bfd_put_32 (htab->elf.dynobj, val, p);
|
| 11977 |
|
|
p += 4;
|
| 11978 |
|
|
/* .glink size. */
|
| 11979 |
|
|
bfd_put_32 (htab->elf.dynobj, htab->glink->rawsize - 8, p);
|
| 11980 |
|
|
p += 4;
|
| 11981 |
|
|
/* Augmentation. */
|
| 11982 |
|
|
p += 1;
|
| 11983 |
|
|
|
| 11984 |
|
|
*p++ = DW_CFA_advance_loc + 1;
|
| 11985 |
|
|
*p++ = DW_CFA_register;
|
| 11986 |
|
|
*p++ = 65;
|
| 11987 |
|
|
*p++ = 12;
|
| 11988 |
|
|
*p++ = DW_CFA_advance_loc + 4;
|
| 11989 |
|
|
*p++ = DW_CFA_restore_extended;
|
| 11990 |
|
|
*p++ = 65;
|
| 11991 |
|
|
}
|
| 11992 |
|
|
htab->glink_eh_frame->size = p - htab->glink_eh_frame->contents;
|
| 11993 |
|
|
}
|
| 11994 |
|
|
|
| 11995 |
14 |
khays |
/* Build the stubs as directed by the stub hash table. */
|
| 11996 |
|
|
bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
|
| 11997 |
|
|
|
| 11998 |
|
|
if (htab->relbrlt != NULL)
|
| 11999 |
|
|
htab->relbrlt->reloc_count = 0;
|
| 12000 |
|
|
|
| 12001 |
166 |
khays |
if (htab->plt_stub_align != 0)
|
| 12002 |
|
|
for (stub_sec = htab->stub_bfd->sections;
|
| 12003 |
|
|
stub_sec != NULL;
|
| 12004 |
|
|
stub_sec = stub_sec->next)
|
| 12005 |
|
|
if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
|
| 12006 |
|
|
stub_sec->size = ((stub_sec->size + (1 << htab->plt_stub_align) - 1)
|
| 12007 |
|
|
& (-1 << htab->plt_stub_align));
|
| 12008 |
|
|
|
| 12009 |
14 |
khays |
for (stub_sec = htab->stub_bfd->sections;
|
| 12010 |
|
|
stub_sec != NULL;
|
| 12011 |
|
|
stub_sec = stub_sec->next)
|
| 12012 |
|
|
if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
|
| 12013 |
|
|
{
|
| 12014 |
|
|
stub_sec_count += 1;
|
| 12015 |
|
|
if (stub_sec->rawsize != stub_sec->size)
|
| 12016 |
|
|
break;
|
| 12017 |
|
|
}
|
| 12018 |
|
|
|
| 12019 |
|
|
if (stub_sec != NULL
|
| 12020 |
161 |
khays |
|| htab->glink->rawsize != htab->glink->size
|
| 12021 |
|
|
|| (htab->glink_eh_frame != NULL
|
| 12022 |
|
|
&& htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size))
|
| 12023 |
14 |
khays |
{
|
| 12024 |
|
|
htab->stub_error = TRUE;
|
| 12025 |
161 |
khays |
info->callbacks->einfo (_("%P: stubs don't match calculated size\n"));
|
| 12026 |
14 |
khays |
}
|
| 12027 |
|
|
|
| 12028 |
|
|
if (htab->stub_error)
|
| 12029 |
|
|
return FALSE;
|
| 12030 |
|
|
|
| 12031 |
|
|
if (stats != NULL)
|
| 12032 |
|
|
{
|
| 12033 |
|
|
*stats = bfd_malloc (500);
|
| 12034 |
|
|
if (*stats == NULL)
|
| 12035 |
|
|
return FALSE;
|
| 12036 |
|
|
|
| 12037 |
|
|
sprintf (*stats, _("linker stubs in %u group%s\n"
|
| 12038 |
|
|
" branch %lu\n"
|
| 12039 |
|
|
" toc adjust %lu\n"
|
| 12040 |
|
|
" long branch %lu\n"
|
| 12041 |
|
|
" long toc adj %lu\n"
|
| 12042 |
166 |
khays |
" plt call %lu\n"
|
| 12043 |
|
|
" plt call toc %lu"),
|
| 12044 |
14 |
khays |
stub_sec_count,
|
| 12045 |
|
|
stub_sec_count == 1 ? "" : "s",
|
| 12046 |
|
|
htab->stub_count[ppc_stub_long_branch - 1],
|
| 12047 |
|
|
htab->stub_count[ppc_stub_long_branch_r2off - 1],
|
| 12048 |
|
|
htab->stub_count[ppc_stub_plt_branch - 1],
|
| 12049 |
|
|
htab->stub_count[ppc_stub_plt_branch_r2off - 1],
|
| 12050 |
166 |
khays |
htab->stub_count[ppc_stub_plt_call - 1],
|
| 12051 |
|
|
htab->stub_count[ppc_stub_plt_call_r2save - 1]);
|
| 12052 |
14 |
khays |
}
|
| 12053 |
|
|
return TRUE;
|
| 12054 |
|
|
}
|
| 12055 |
|
|
|
| 12056 |
|
|
/* This function undoes the changes made by add_symbol_adjust. */
|
| 12057 |
|
|
|
| 12058 |
|
|
static bfd_boolean
|
| 12059 |
|
|
undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
|
| 12060 |
|
|
{
|
| 12061 |
|
|
struct ppc_link_hash_entry *eh;
|
| 12062 |
|
|
|
| 12063 |
|
|
if (h->root.type == bfd_link_hash_indirect)
|
| 12064 |
|
|
return TRUE;
|
| 12065 |
|
|
|
| 12066 |
|
|
eh = (struct ppc_link_hash_entry *) h;
|
| 12067 |
|
|
if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined)
|
| 12068 |
|
|
return TRUE;
|
| 12069 |
|
|
|
| 12070 |
|
|
eh->elf.root.type = bfd_link_hash_undefined;
|
| 12071 |
|
|
return TRUE;
|
| 12072 |
|
|
}
|
| 12073 |
|
|
|
| 12074 |
|
|
void
|
| 12075 |
|
|
ppc64_elf_restore_symbols (struct bfd_link_info *info)
|
| 12076 |
|
|
{
|
| 12077 |
|
|
struct ppc_link_hash_table *htab = ppc_hash_table (info);
|
| 12078 |
|
|
|
| 12079 |
|
|
if (htab != NULL)
|
| 12080 |
|
|
elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info);
|
| 12081 |
|
|
}
|
| 12082 |
|
|
|
| 12083 |
|
|
/* What to do when ld finds relocations against symbols defined in
|
| 12084 |
|
|
discarded sections. */
|
| 12085 |
|
|
|
| 12086 |
|
|
static unsigned int
|
| 12087 |
|
|
ppc64_elf_action_discarded (asection *sec)
|
| 12088 |
|
|
{
|
| 12089 |
|
|
if (strcmp (".opd", sec->name) == 0)
|
| 12090 |
|
|
return 0;
|
| 12091 |
|
|
|
| 12092 |
|
|
if (strcmp (".toc", sec->name) == 0)
|
| 12093 |
|
|
return 0;
|
| 12094 |
|
|
|
| 12095 |
|
|
if (strcmp (".toc1", sec->name) == 0)
|
| 12096 |
|
|
return 0;
|
| 12097 |
|
|
|
| 12098 |
|
|
return _bfd_elf_default_action_discarded (sec);
|
| 12099 |
|
|
}
|
| 12100 |
|
|
|
| 12101 |
|
|
/* The RELOCATE_SECTION function is called by the ELF backend linker
|
| 12102 |
|
|
to handle the relocations for a section.
|
| 12103 |
|
|
|
| 12104 |
|
|
The relocs are always passed as Rela structures; if the section
|
| 12105 |
|
|
actually uses Rel structures, the r_addend field will always be
|
| 12106 |
|
|
zero.
|
| 12107 |
|
|
|
| 12108 |
|
|
This function is responsible for adjust the section contents as
|
| 12109 |
|
|
necessary, and (if using Rela relocs and generating a
|
| 12110 |
|
|
relocatable output file) adjusting the reloc addend as
|
| 12111 |
|
|
necessary.
|
| 12112 |
|
|
|
| 12113 |
|
|
This function does not have to worry about setting the reloc
|
| 12114 |
|
|
address or the reloc symbol index.
|
| 12115 |
|
|
|
| 12116 |
|
|
LOCAL_SYMS is a pointer to the swapped in local symbols.
|
| 12117 |
|
|
|
| 12118 |
|
|
LOCAL_SECTIONS is an array giving the section in the input file
|
| 12119 |
|
|
corresponding to the st_shndx field of each local symbol.
|
| 12120 |
|
|
|
| 12121 |
|
|
The global hash table entry for the global symbols can be found
|
| 12122 |
|
|
via elf_sym_hashes (input_bfd).
|
| 12123 |
|
|
|
| 12124 |
|
|
When generating relocatable output, this function must handle
|
| 12125 |
|
|
STB_LOCAL/STT_SECTION symbols specially. The output symbol is
|
| 12126 |
|
|
going to be the section symbol corresponding to the output
|
| 12127 |
|
|
section, which means that the addend must be adjusted
|
| 12128 |
|
|
accordingly. */
|
| 12129 |
|
|
|
| 12130 |
|
|
static bfd_boolean
|
| 12131 |
|
|
ppc64_elf_relocate_section (bfd *output_bfd,
|
| 12132 |
|
|
struct bfd_link_info *info,
|
| 12133 |
|
|
bfd *input_bfd,
|
| 12134 |
|
|
asection *input_section,
|
| 12135 |
|
|
bfd_byte *contents,
|
| 12136 |
|
|
Elf_Internal_Rela *relocs,
|
| 12137 |
|
|
Elf_Internal_Sym *local_syms,
|
| 12138 |
|
|
asection **local_sections)
|
| 12139 |
|
|
{
|
| 12140 |
|
|
struct ppc_link_hash_table *htab;
|
| 12141 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 12142 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
| 12143 |
|
|
Elf_Internal_Rela *rel;
|
| 12144 |
|
|
Elf_Internal_Rela *relend;
|
| 12145 |
|
|
Elf_Internal_Rela outrel;
|
| 12146 |
|
|
bfd_byte *loc;
|
| 12147 |
|
|
struct got_entry **local_got_ents;
|
| 12148 |
|
|
bfd_vma TOCstart;
|
| 12149 |
|
|
bfd_boolean ret = TRUE;
|
| 12150 |
|
|
bfd_boolean is_opd;
|
| 12151 |
166 |
khays |
/* Assume 'at' branch hints. */
|
| 12152 |
|
|
bfd_boolean is_isa_v2 = TRUE;
|
| 12153 |
14 |
khays |
bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
|
| 12154 |
|
|
|
| 12155 |
|
|
/* Initialize howto table if needed. */
|
| 12156 |
|
|
if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
|
| 12157 |
|
|
ppc_howto_init ();
|
| 12158 |
|
|
|
| 12159 |
|
|
htab = ppc_hash_table (info);
|
| 12160 |
|
|
if (htab == NULL)
|
| 12161 |
|
|
return FALSE;
|
| 12162 |
|
|
|
| 12163 |
|
|
/* Don't relocate stub sections. */
|
| 12164 |
|
|
if (input_section->owner == htab->stub_bfd)
|
| 12165 |
|
|
return TRUE;
|
| 12166 |
|
|
|
| 12167 |
|
|
BFD_ASSERT (is_ppc64_elf (input_bfd));
|
| 12168 |
|
|
|
| 12169 |
|
|
local_got_ents = elf_local_got_ents (input_bfd);
|
| 12170 |
|
|
TOCstart = elf_gp (output_bfd);
|
| 12171 |
|
|
symtab_hdr = &elf_symtab_hdr (input_bfd);
|
| 12172 |
|
|
sym_hashes = elf_sym_hashes (input_bfd);
|
| 12173 |
|
|
is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd;
|
| 12174 |
|
|
|
| 12175 |
|
|
rel = relocs;
|
| 12176 |
|
|
relend = relocs + input_section->reloc_count;
|
| 12177 |
|
|
for (; rel < relend; rel++)
|
| 12178 |
|
|
{
|
| 12179 |
|
|
enum elf_ppc64_reloc_type r_type;
|
| 12180 |
|
|
bfd_vma addend, orig_addend;
|
| 12181 |
|
|
bfd_reloc_status_type r;
|
| 12182 |
|
|
Elf_Internal_Sym *sym;
|
| 12183 |
|
|
asection *sec;
|
| 12184 |
|
|
struct elf_link_hash_entry *h_elf;
|
| 12185 |
|
|
struct ppc_link_hash_entry *h;
|
| 12186 |
|
|
struct ppc_link_hash_entry *fdh;
|
| 12187 |
|
|
const char *sym_name;
|
| 12188 |
|
|
unsigned long r_symndx, toc_symndx;
|
| 12189 |
|
|
bfd_vma toc_addend;
|
| 12190 |
|
|
unsigned char tls_mask, tls_gd, tls_type;
|
| 12191 |
|
|
unsigned char sym_type;
|
| 12192 |
|
|
bfd_vma relocation;
|
| 12193 |
|
|
bfd_boolean unresolved_reloc;
|
| 12194 |
|
|
bfd_boolean warned;
|
| 12195 |
|
|
unsigned int insn;
|
| 12196 |
|
|
unsigned int mask;
|
| 12197 |
|
|
struct ppc_stub_hash_entry *stub_entry;
|
| 12198 |
|
|
bfd_vma max_br_offset;
|
| 12199 |
|
|
bfd_vma from;
|
| 12200 |
|
|
|
| 12201 |
|
|
r_type = ELF64_R_TYPE (rel->r_info);
|
| 12202 |
|
|
r_symndx = ELF64_R_SYM (rel->r_info);
|
| 12203 |
|
|
|
| 12204 |
|
|
/* For old style R_PPC64_TOC relocs with a zero symbol, use the
|
| 12205 |
|
|
symbol of the previous ADDR64 reloc. The symbol gives us the
|
| 12206 |
|
|
proper TOC base to use. */
|
| 12207 |
|
|
if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC)
|
| 12208 |
|
|
&& rel != relocs
|
| 12209 |
|
|
&& ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64
|
| 12210 |
|
|
&& is_opd)
|
| 12211 |
|
|
r_symndx = ELF64_R_SYM (rel[-1].r_info);
|
| 12212 |
|
|
|
| 12213 |
|
|
sym = NULL;
|
| 12214 |
|
|
sec = NULL;
|
| 12215 |
|
|
h_elf = NULL;
|
| 12216 |
|
|
sym_name = NULL;
|
| 12217 |
|
|
unresolved_reloc = FALSE;
|
| 12218 |
|
|
warned = FALSE;
|
| 12219 |
|
|
orig_addend = rel->r_addend;
|
| 12220 |
|
|
|
| 12221 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
| 12222 |
|
|
{
|
| 12223 |
|
|
/* It's a local symbol. */
|
| 12224 |
|
|
struct _opd_sec_data *opd;
|
| 12225 |
|
|
|
| 12226 |
|
|
sym = local_syms + r_symndx;
|
| 12227 |
|
|
sec = local_sections[r_symndx];
|
| 12228 |
|
|
sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
|
| 12229 |
|
|
sym_type = ELF64_ST_TYPE (sym->st_info);
|
| 12230 |
|
|
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
|
| 12231 |
|
|
opd = get_opd_info (sec);
|
| 12232 |
|
|
if (opd != NULL && opd->adjust != NULL)
|
| 12233 |
|
|
{
|
| 12234 |
|
|
long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8];
|
| 12235 |
|
|
if (adjust == -1)
|
| 12236 |
|
|
relocation = 0;
|
| 12237 |
|
|
else
|
| 12238 |
|
|
{
|
| 12239 |
|
|
/* If this is a relocation against the opd section sym
|
| 12240 |
|
|
and we have edited .opd, adjust the reloc addend so
|
| 12241 |
|
|
that ld -r and ld --emit-relocs output is correct.
|
| 12242 |
|
|
If it is a reloc against some other .opd symbol,
|
| 12243 |
|
|
then the symbol value will be adjusted later. */
|
| 12244 |
|
|
if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
|
| 12245 |
|
|
rel->r_addend += adjust;
|
| 12246 |
|
|
else
|
| 12247 |
|
|
relocation += adjust;
|
| 12248 |
|
|
}
|
| 12249 |
|
|
}
|
| 12250 |
|
|
}
|
| 12251 |
|
|
else
|
| 12252 |
|
|
{
|
| 12253 |
|
|
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
|
| 12254 |
|
|
r_symndx, symtab_hdr, sym_hashes,
|
| 12255 |
|
|
h_elf, sec, relocation,
|
| 12256 |
|
|
unresolved_reloc, warned);
|
| 12257 |
|
|
sym_name = h_elf->root.root.string;
|
| 12258 |
|
|
sym_type = h_elf->type;
|
| 12259 |
|
|
}
|
| 12260 |
|
|
h = (struct ppc_link_hash_entry *) h_elf;
|
| 12261 |
|
|
|
| 12262 |
|
|
if (sec != NULL && elf_discarded_section (sec))
|
| 12263 |
|
|
RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
|
| 12264 |
|
|
rel, relend,
|
| 12265 |
|
|
ppc64_elf_howto_table[r_type],
|
| 12266 |
|
|
contents);
|
| 12267 |
|
|
|
| 12268 |
|
|
if (info->relocatable)
|
| 12269 |
|
|
continue;
|
| 12270 |
|
|
|
| 12271 |
|
|
/* TLS optimizations. Replace instruction sequences and relocs
|
| 12272 |
|
|
based on information we collected in tls_optimize. We edit
|
| 12273 |
|
|
RELOCS so that --emit-relocs will output something sensible
|
| 12274 |
|
|
for the final instruction stream. */
|
| 12275 |
|
|
tls_mask = 0;
|
| 12276 |
|
|
tls_gd = 0;
|
| 12277 |
|
|
toc_symndx = 0;
|
| 12278 |
|
|
if (h != NULL)
|
| 12279 |
|
|
tls_mask = h->tls_mask;
|
| 12280 |
|
|
else if (local_got_ents != NULL)
|
| 12281 |
|
|
{
|
| 12282 |
|
|
struct plt_entry **local_plt = (struct plt_entry **)
|
| 12283 |
|
|
(local_got_ents + symtab_hdr->sh_info);
|
| 12284 |
|
|
unsigned char *lgot_masks = (unsigned char *)
|
| 12285 |
|
|
(local_plt + symtab_hdr->sh_info);
|
| 12286 |
|
|
tls_mask = lgot_masks[r_symndx];
|
| 12287 |
|
|
}
|
| 12288 |
|
|
if (tls_mask == 0
|
| 12289 |
|
|
&& (r_type == R_PPC64_TLS
|
| 12290 |
|
|
|| r_type == R_PPC64_TLSGD
|
| 12291 |
|
|
|| r_type == R_PPC64_TLSLD))
|
| 12292 |
|
|
{
|
| 12293 |
|
|
/* Check for toc tls entries. */
|
| 12294 |
|
|
unsigned char *toc_tls;
|
| 12295 |
|
|
|
| 12296 |
|
|
if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
|
| 12297 |
|
|
&local_syms, rel, input_bfd))
|
| 12298 |
|
|
return FALSE;
|
| 12299 |
|
|
|
| 12300 |
|
|
if (toc_tls)
|
| 12301 |
|
|
tls_mask = *toc_tls;
|
| 12302 |
|
|
}
|
| 12303 |
|
|
|
| 12304 |
|
|
/* Check that tls relocs are used with tls syms, and non-tls
|
| 12305 |
|
|
relocs are used with non-tls syms. */
|
| 12306 |
|
|
if (r_symndx != STN_UNDEF
|
| 12307 |
|
|
&& r_type != R_PPC64_NONE
|
| 12308 |
|
|
&& (h == NULL
|
| 12309 |
|
|
|| h->elf.root.type == bfd_link_hash_defined
|
| 12310 |
|
|
|| h->elf.root.type == bfd_link_hash_defweak)
|
| 12311 |
|
|
&& (IS_PPC64_TLS_RELOC (r_type)
|
| 12312 |
|
|
!= (sym_type == STT_TLS
|
| 12313 |
|
|
|| (sym_type == STT_SECTION
|
| 12314 |
|
|
&& (sec->flags & SEC_THREAD_LOCAL) != 0))))
|
| 12315 |
|
|
{
|
| 12316 |
|
|
if (tls_mask != 0
|
| 12317 |
|
|
&& (r_type == R_PPC64_TLS
|
| 12318 |
|
|
|| r_type == R_PPC64_TLSGD
|
| 12319 |
|
|
|| r_type == R_PPC64_TLSLD))
|
| 12320 |
|
|
/* R_PPC64_TLS is OK against a symbol in the TOC. */
|
| 12321 |
|
|
;
|
| 12322 |
|
|
else
|
| 12323 |
|
|
info->callbacks->einfo
|
| 12324 |
|
|
(!IS_PPC64_TLS_RELOC (r_type)
|
| 12325 |
161 |
khays |
? _("%P: %H: %s used with TLS symbol %s\n")
|
| 12326 |
|
|
: _("%P: %H: %s used with non-TLS symbol %s\n"),
|
| 12327 |
14 |
khays |
input_bfd, input_section, rel->r_offset,
|
| 12328 |
|
|
ppc64_elf_howto_table[r_type]->name,
|
| 12329 |
|
|
sym_name);
|
| 12330 |
|
|
}
|
| 12331 |
|
|
|
| 12332 |
|
|
/* Ensure reloc mapping code below stays sane. */
|
| 12333 |
|
|
if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1
|
| 12334 |
|
|
|| R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1
|
| 12335 |
|
|
|| (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3)
|
| 12336 |
|
|
|| (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3)
|
| 12337 |
|
|
|| (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3)
|
| 12338 |
|
|
|| (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3)
|
| 12339 |
|
|
|| (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3)
|
| 12340 |
|
|
|| (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3)
|
| 12341 |
|
|
|| (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3)
|
| 12342 |
|
|
|| (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3))
|
| 12343 |
|
|
abort ();
|
| 12344 |
|
|
|
| 12345 |
|
|
switch (r_type)
|
| 12346 |
|
|
{
|
| 12347 |
|
|
default:
|
| 12348 |
|
|
break;
|
| 12349 |
|
|
|
| 12350 |
|
|
case R_PPC64_LO_DS_OPT:
|
| 12351 |
|
|
insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
|
| 12352 |
|
|
if ((insn & (0x3f << 26)) != 58u << 26)
|
| 12353 |
|
|
abort ();
|
| 12354 |
|
|
insn += (14u << 26) - (58u << 26);
|
| 12355 |
|
|
bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
|
| 12356 |
|
|
r_type = R_PPC64_TOC16_LO;
|
| 12357 |
|
|
rel->r_info = ELF64_R_INFO (r_symndx, r_type);
|
| 12358 |
|
|
break;
|
| 12359 |
|
|
|
| 12360 |
|
|
case R_PPC64_TOC16:
|
| 12361 |
|
|
case R_PPC64_TOC16_LO:
|
| 12362 |
|
|
case R_PPC64_TOC16_DS:
|
| 12363 |
|
|
case R_PPC64_TOC16_LO_DS:
|
| 12364 |
|
|
{
|
| 12365 |
|
|
/* Check for toc tls entries. */
|
| 12366 |
|
|
unsigned char *toc_tls;
|
| 12367 |
|
|
int retval;
|
| 12368 |
|
|
|
| 12369 |
|
|
retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend,
|
| 12370 |
|
|
&local_syms, rel, input_bfd);
|
| 12371 |
|
|
if (retval == 0)
|
| 12372 |
|
|
return FALSE;
|
| 12373 |
|
|
|
| 12374 |
|
|
if (toc_tls)
|
| 12375 |
|
|
{
|
| 12376 |
|
|
tls_mask = *toc_tls;
|
| 12377 |
|
|
if (r_type == R_PPC64_TOC16_DS
|
| 12378 |
|
|
|| r_type == R_PPC64_TOC16_LO_DS)
|
| 12379 |
|
|
{
|
| 12380 |
|
|
if (tls_mask != 0
|
| 12381 |
|
|
&& (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0)
|
| 12382 |
|
|
goto toctprel;
|
| 12383 |
|
|
}
|
| 12384 |
|
|
else
|
| 12385 |
|
|
{
|
| 12386 |
|
|
/* If we found a GD reloc pair, then we might be
|
| 12387 |
|
|
doing a GD->IE transition. */
|
| 12388 |
|
|
if (retval == 2)
|
| 12389 |
|
|
{
|
| 12390 |
|
|
tls_gd = TLS_TPRELGD;
|
| 12391 |
|
|
if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
|
| 12392 |
|
|
goto tls_ldgd_opt;
|
| 12393 |
|
|
}
|
| 12394 |
|
|
else if (retval == 3)
|
| 12395 |
|
|
{
|
| 12396 |
|
|
if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
|
| 12397 |
|
|
goto tls_ldgd_opt;
|
| 12398 |
|
|
}
|
| 12399 |
|
|
}
|
| 12400 |
|
|
}
|
| 12401 |
|
|
}
|
| 12402 |
|
|
break;
|
| 12403 |
|
|
|
| 12404 |
|
|
case R_PPC64_GOT_TPREL16_HI:
|
| 12405 |
|
|
case R_PPC64_GOT_TPREL16_HA:
|
| 12406 |
|
|
if (tls_mask != 0
|
| 12407 |
|
|
&& (tls_mask & TLS_TPREL) == 0)
|
| 12408 |
|
|
{
|
| 12409 |
|
|
rel->r_offset -= d_offset;
|
| 12410 |
|
|
bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
|
| 12411 |
|
|
r_type = R_PPC64_NONE;
|
| 12412 |
|
|
rel->r_info = ELF64_R_INFO (r_symndx, r_type);
|
| 12413 |
|
|
}
|
| 12414 |
|
|
break;
|
| 12415 |
|
|
|
| 12416 |
|
|
case R_PPC64_GOT_TPREL16_DS:
|
| 12417 |
|
|
case R_PPC64_GOT_TPREL16_LO_DS:
|
| 12418 |
|
|
if (tls_mask != 0
|
| 12419 |
|
|
&& (tls_mask & TLS_TPREL) == 0)
|
| 12420 |
|
|
{
|
| 12421 |
|
|
toctprel:
|
| 12422 |
|
|
insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
|
| 12423 |
|
|
insn &= 31 << 21;
|
| 12424 |
|
|
insn |= 0x3c0d0000; /* addis 0,13,0 */
|
| 12425 |
|
|
bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
|
| 12426 |
|
|
r_type = R_PPC64_TPREL16_HA;
|
| 12427 |
|
|
if (toc_symndx != 0)
|
| 12428 |
|
|
{
|
| 12429 |
|
|
rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
|
| 12430 |
|
|
rel->r_addend = toc_addend;
|
| 12431 |
|
|
/* We changed the symbol. Start over in order to
|
| 12432 |
|
|
get h, sym, sec etc. right. */
|
| 12433 |
|
|
rel--;
|
| 12434 |
|
|
continue;
|
| 12435 |
|
|
}
|
| 12436 |
|
|
else
|
| 12437 |
|
|
rel->r_info = ELF64_R_INFO (r_symndx, r_type);
|
| 12438 |
|
|
}
|
| 12439 |
|
|
break;
|
| 12440 |
|
|
|
| 12441 |
|
|
case R_PPC64_TLS:
|
| 12442 |
|
|
if (tls_mask != 0
|
| 12443 |
|
|
&& (tls_mask & TLS_TPREL) == 0)
|
| 12444 |
|
|
{
|
| 12445 |
|
|
insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
|
| 12446 |
|
|
insn = _bfd_elf_ppc_at_tls_transform (insn, 13);
|
| 12447 |
|
|
if (insn == 0)
|
| 12448 |
|
|
abort ();
|
| 12449 |
|
|
bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
|
| 12450 |
|
|
/* Was PPC64_TLS which sits on insn boundary, now
|
| 12451 |
|
|
PPC64_TPREL16_LO which is at low-order half-word. */
|
| 12452 |
|
|
rel->r_offset += d_offset;
|
| 12453 |
|
|
r_type = R_PPC64_TPREL16_LO;
|
| 12454 |
|
|
if (toc_symndx != 0)
|
| 12455 |
|
|
{
|
| 12456 |
|
|
rel->r_info = ELF64_R_INFO (toc_symndx, r_type);
|
| 12457 |
|
|
rel->r_addend = toc_addend;
|
| 12458 |
|
|
/* We changed the symbol. Start over in order to
|
| 12459 |
|
|
get h, sym, sec etc. right. */
|
| 12460 |
|
|
rel--;
|
| 12461 |
|
|
continue;
|
| 12462 |
|
|
}
|
| 12463 |
|
|
else
|
| 12464 |
|
|
rel->r_info = ELF64_R_INFO (r_symndx, r_type);
|
| 12465 |
|
|
}
|
| 12466 |
|
|
break;
|
| 12467 |
|
|
|
| 12468 |
|
|
case R_PPC64_GOT_TLSGD16_HI:
|
| 12469 |
|
|
case R_PPC64_GOT_TLSGD16_HA:
|
| 12470 |
|
|
tls_gd = TLS_TPRELGD;
|
| 12471 |
|
|
if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
|
| 12472 |
|
|
goto tls_gdld_hi;
|
| 12473 |
|
|
break;
|
| 12474 |
|
|
|
| 12475 |
|
|
case R_PPC64_GOT_TLSLD16_HI:
|
| 12476 |
|
|
case R_PPC64_GOT_TLSLD16_HA:
|
| 12477 |
|
|
if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
|
| 12478 |
|
|
{
|
| 12479 |
|
|
tls_gdld_hi:
|
| 12480 |
|
|
if ((tls_mask & tls_gd) != 0)
|
| 12481 |
|
|
r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
|
| 12482 |
|
|
+ R_PPC64_GOT_TPREL16_DS);
|
| 12483 |
|
|
else
|
| 12484 |
|
|
{
|
| 12485 |
|
|
rel->r_offset -= d_offset;
|
| 12486 |
|
|
bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
|
| 12487 |
|
|
r_type = R_PPC64_NONE;
|
| 12488 |
|
|
}
|
| 12489 |
|
|
rel->r_info = ELF64_R_INFO (r_symndx, r_type);
|
| 12490 |
|
|
}
|
| 12491 |
|
|
break;
|
| 12492 |
|
|
|
| 12493 |
|
|
case R_PPC64_GOT_TLSGD16:
|
| 12494 |
|
|
case R_PPC64_GOT_TLSGD16_LO:
|
| 12495 |
|
|
tls_gd = TLS_TPRELGD;
|
| 12496 |
|
|
if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
|
| 12497 |
|
|
goto tls_ldgd_opt;
|
| 12498 |
|
|
break;
|
| 12499 |
|
|
|
| 12500 |
|
|
case R_PPC64_GOT_TLSLD16:
|
| 12501 |
|
|
case R_PPC64_GOT_TLSLD16_LO:
|
| 12502 |
|
|
if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
|
| 12503 |
|
|
{
|
| 12504 |
|
|
unsigned int insn1, insn2, insn3;
|
| 12505 |
|
|
bfd_vma offset;
|
| 12506 |
|
|
|
| 12507 |
|
|
tls_ldgd_opt:
|
| 12508 |
|
|
offset = (bfd_vma) -1;
|
| 12509 |
|
|
/* If not using the newer R_PPC64_TLSGD/LD to mark
|
| 12510 |
|
|
__tls_get_addr calls, we must trust that the call
|
| 12511 |
|
|
stays with its arg setup insns, ie. that the next
|
| 12512 |
|
|
reloc is the __tls_get_addr call associated with
|
| 12513 |
|
|
the current reloc. Edit both insns. */
|
| 12514 |
|
|
if (input_section->has_tls_get_addr_call
|
| 12515 |
|
|
&& rel + 1 < relend
|
| 12516 |
|
|
&& branch_reloc_hash_match (input_bfd, rel + 1,
|
| 12517 |
|
|
htab->tls_get_addr,
|
| 12518 |
|
|
htab->tls_get_addr_fd))
|
| 12519 |
|
|
offset = rel[1].r_offset;
|
| 12520 |
|
|
if ((tls_mask & tls_gd) != 0)
|
| 12521 |
|
|
{
|
| 12522 |
|
|
/* IE */
|
| 12523 |
|
|
insn1 = bfd_get_32 (output_bfd,
|
| 12524 |
|
|
contents + rel->r_offset - d_offset);
|
| 12525 |
|
|
insn1 &= (1 << 26) - (1 << 2);
|
| 12526 |
|
|
insn1 |= 58 << 26; /* ld */
|
| 12527 |
|
|
insn2 = 0x7c636a14; /* add 3,3,13 */
|
| 12528 |
|
|
if (offset != (bfd_vma) -1)
|
| 12529 |
|
|
rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
|
| 12530 |
|
|
if ((tls_mask & TLS_EXPLICIT) == 0)
|
| 12531 |
|
|
r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3)
|
| 12532 |
|
|
+ R_PPC64_GOT_TPREL16_DS);
|
| 12533 |
|
|
else
|
| 12534 |
|
|
r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16;
|
| 12535 |
|
|
rel->r_info = ELF64_R_INFO (r_symndx, r_type);
|
| 12536 |
|
|
}
|
| 12537 |
|
|
else
|
| 12538 |
|
|
{
|
| 12539 |
|
|
/* LE */
|
| 12540 |
|
|
insn1 = 0x3c6d0000; /* addis 3,13,0 */
|
| 12541 |
|
|
insn2 = 0x38630000; /* addi 3,3,0 */
|
| 12542 |
|
|
if (tls_gd == 0)
|
| 12543 |
|
|
{
|
| 12544 |
|
|
/* Was an LD reloc. */
|
| 12545 |
|
|
if (toc_symndx)
|
| 12546 |
|
|
sec = local_sections[toc_symndx];
|
| 12547 |
|
|
for (r_symndx = 0;
|
| 12548 |
|
|
r_symndx < symtab_hdr->sh_info;
|
| 12549 |
|
|
r_symndx++)
|
| 12550 |
|
|
if (local_sections[r_symndx] == sec)
|
| 12551 |
|
|
break;
|
| 12552 |
|
|
if (r_symndx >= symtab_hdr->sh_info)
|
| 12553 |
|
|
r_symndx = STN_UNDEF;
|
| 12554 |
|
|
rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
|
| 12555 |
|
|
if (r_symndx != STN_UNDEF)
|
| 12556 |
|
|
rel->r_addend -= (local_syms[r_symndx].st_value
|
| 12557 |
|
|
+ sec->output_offset
|
| 12558 |
|
|
+ sec->output_section->vma);
|
| 12559 |
|
|
}
|
| 12560 |
|
|
else if (toc_symndx != 0)
|
| 12561 |
|
|
{
|
| 12562 |
|
|
r_symndx = toc_symndx;
|
| 12563 |
|
|
rel->r_addend = toc_addend;
|
| 12564 |
|
|
}
|
| 12565 |
|
|
r_type = R_PPC64_TPREL16_HA;
|
| 12566 |
|
|
rel->r_info = ELF64_R_INFO (r_symndx, r_type);
|
| 12567 |
|
|
if (offset != (bfd_vma) -1)
|
| 12568 |
|
|
{
|
| 12569 |
|
|
rel[1].r_info = ELF64_R_INFO (r_symndx,
|
| 12570 |
|
|
R_PPC64_TPREL16_LO);
|
| 12571 |
|
|
rel[1].r_offset = offset + d_offset;
|
| 12572 |
|
|
rel[1].r_addend = rel->r_addend;
|
| 12573 |
|
|
}
|
| 12574 |
|
|
}
|
| 12575 |
|
|
bfd_put_32 (output_bfd, insn1,
|
| 12576 |
|
|
contents + rel->r_offset - d_offset);
|
| 12577 |
|
|
if (offset != (bfd_vma) -1)
|
| 12578 |
|
|
{
|
| 12579 |
|
|
insn3 = bfd_get_32 (output_bfd,
|
| 12580 |
|
|
contents + offset + 4);
|
| 12581 |
|
|
if (insn3 == NOP
|
| 12582 |
|
|
|| insn3 == CROR_151515 || insn3 == CROR_313131)
|
| 12583 |
|
|
{
|
| 12584 |
|
|
rel[1].r_offset += 4;
|
| 12585 |
|
|
bfd_put_32 (output_bfd, insn2, contents + offset + 4);
|
| 12586 |
|
|
insn2 = NOP;
|
| 12587 |
|
|
}
|
| 12588 |
|
|
bfd_put_32 (output_bfd, insn2, contents + offset);
|
| 12589 |
|
|
}
|
| 12590 |
|
|
if ((tls_mask & tls_gd) == 0
|
| 12591 |
|
|
&& (tls_gd == 0 || toc_symndx != 0))
|
| 12592 |
|
|
{
|
| 12593 |
|
|
/* We changed the symbol. Start over in order
|
| 12594 |
|
|
to get h, sym, sec etc. right. */
|
| 12595 |
|
|
rel--;
|
| 12596 |
|
|
continue;
|
| 12597 |
|
|
}
|
| 12598 |
|
|
}
|
| 12599 |
|
|
break;
|
| 12600 |
|
|
|
| 12601 |
|
|
case R_PPC64_TLSGD:
|
| 12602 |
|
|
if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
|
| 12603 |
|
|
{
|
| 12604 |
|
|
unsigned int insn2, insn3;
|
| 12605 |
|
|
bfd_vma offset = rel->r_offset;
|
| 12606 |
|
|
|
| 12607 |
|
|
if ((tls_mask & TLS_TPRELGD) != 0)
|
| 12608 |
|
|
{
|
| 12609 |
|
|
/* IE */
|
| 12610 |
|
|
r_type = R_PPC64_NONE;
|
| 12611 |
|
|
insn2 = 0x7c636a14; /* add 3,3,13 */
|
| 12612 |
|
|
}
|
| 12613 |
|
|
else
|
| 12614 |
|
|
{
|
| 12615 |
|
|
/* LE */
|
| 12616 |
|
|
if (toc_symndx != 0)
|
| 12617 |
|
|
{
|
| 12618 |
|
|
r_symndx = toc_symndx;
|
| 12619 |
|
|
rel->r_addend = toc_addend;
|
| 12620 |
|
|
}
|
| 12621 |
|
|
r_type = R_PPC64_TPREL16_LO;
|
| 12622 |
|
|
rel->r_offset = offset + d_offset;
|
| 12623 |
|
|
insn2 = 0x38630000; /* addi 3,3,0 */
|
| 12624 |
|
|
}
|
| 12625 |
|
|
rel->r_info = ELF64_R_INFO (r_symndx, r_type);
|
| 12626 |
|
|
/* Zap the reloc on the _tls_get_addr call too. */
|
| 12627 |
|
|
BFD_ASSERT (offset == rel[1].r_offset);
|
| 12628 |
|
|
rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
|
| 12629 |
|
|
insn3 = bfd_get_32 (output_bfd,
|
| 12630 |
|
|
contents + offset + 4);
|
| 12631 |
|
|
if (insn3 == NOP
|
| 12632 |
|
|
|| insn3 == CROR_151515 || insn3 == CROR_313131)
|
| 12633 |
|
|
{
|
| 12634 |
|
|
rel->r_offset += 4;
|
| 12635 |
|
|
bfd_put_32 (output_bfd, insn2, contents + offset + 4);
|
| 12636 |
|
|
insn2 = NOP;
|
| 12637 |
|
|
}
|
| 12638 |
|
|
bfd_put_32 (output_bfd, insn2, contents + offset);
|
| 12639 |
|
|
if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0)
|
| 12640 |
|
|
{
|
| 12641 |
|
|
rel--;
|
| 12642 |
|
|
continue;
|
| 12643 |
|
|
}
|
| 12644 |
|
|
}
|
| 12645 |
|
|
break;
|
| 12646 |
|
|
|
| 12647 |
|
|
case R_PPC64_TLSLD:
|
| 12648 |
|
|
if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
|
| 12649 |
|
|
{
|
| 12650 |
|
|
unsigned int insn2, insn3;
|
| 12651 |
|
|
bfd_vma offset = rel->r_offset;
|
| 12652 |
|
|
|
| 12653 |
|
|
if (toc_symndx)
|
| 12654 |
|
|
sec = local_sections[toc_symndx];
|
| 12655 |
|
|
for (r_symndx = 0;
|
| 12656 |
|
|
r_symndx < symtab_hdr->sh_info;
|
| 12657 |
|
|
r_symndx++)
|
| 12658 |
|
|
if (local_sections[r_symndx] == sec)
|
| 12659 |
|
|
break;
|
| 12660 |
|
|
if (r_symndx >= symtab_hdr->sh_info)
|
| 12661 |
|
|
r_symndx = STN_UNDEF;
|
| 12662 |
|
|
rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
|
| 12663 |
|
|
if (r_symndx != STN_UNDEF)
|
| 12664 |
|
|
rel->r_addend -= (local_syms[r_symndx].st_value
|
| 12665 |
|
|
+ sec->output_offset
|
| 12666 |
|
|
+ sec->output_section->vma);
|
| 12667 |
|
|
|
| 12668 |
|
|
r_type = R_PPC64_TPREL16_LO;
|
| 12669 |
|
|
rel->r_info = ELF64_R_INFO (r_symndx, r_type);
|
| 12670 |
|
|
rel->r_offset = offset + d_offset;
|
| 12671 |
|
|
/* Zap the reloc on the _tls_get_addr call too. */
|
| 12672 |
|
|
BFD_ASSERT (offset == rel[1].r_offset);
|
| 12673 |
|
|
rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE);
|
| 12674 |
|
|
insn2 = 0x38630000; /* addi 3,3,0 */
|
| 12675 |
|
|
insn3 = bfd_get_32 (output_bfd,
|
| 12676 |
|
|
contents + offset + 4);
|
| 12677 |
|
|
if (insn3 == NOP
|
| 12678 |
|
|
|| insn3 == CROR_151515 || insn3 == CROR_313131)
|
| 12679 |
|
|
{
|
| 12680 |
|
|
rel->r_offset += 4;
|
| 12681 |
|
|
bfd_put_32 (output_bfd, insn2, contents + offset + 4);
|
| 12682 |
|
|
insn2 = NOP;
|
| 12683 |
|
|
}
|
| 12684 |
|
|
bfd_put_32 (output_bfd, insn2, contents + offset);
|
| 12685 |
|
|
rel--;
|
| 12686 |
|
|
continue;
|
| 12687 |
|
|
}
|
| 12688 |
|
|
break;
|
| 12689 |
|
|
|
| 12690 |
|
|
case R_PPC64_DTPMOD64:
|
| 12691 |
|
|
if (rel + 1 < relend
|
| 12692 |
|
|
&& rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)
|
| 12693 |
|
|
&& rel[1].r_offset == rel->r_offset + 8)
|
| 12694 |
|
|
{
|
| 12695 |
|
|
if ((tls_mask & TLS_GD) == 0)
|
| 12696 |
|
|
{
|
| 12697 |
|
|
rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE);
|
| 12698 |
|
|
if ((tls_mask & TLS_TPRELGD) != 0)
|
| 12699 |
|
|
r_type = R_PPC64_TPREL64;
|
| 12700 |
|
|
else
|
| 12701 |
|
|
{
|
| 12702 |
|
|
bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
|
| 12703 |
|
|
r_type = R_PPC64_NONE;
|
| 12704 |
|
|
}
|
| 12705 |
|
|
rel->r_info = ELF64_R_INFO (r_symndx, r_type);
|
| 12706 |
|
|
}
|
| 12707 |
|
|
}
|
| 12708 |
|
|
else
|
| 12709 |
|
|
{
|
| 12710 |
|
|
if ((tls_mask & TLS_LD) == 0)
|
| 12711 |
|
|
{
|
| 12712 |
|
|
bfd_put_64 (output_bfd, 1, contents + rel->r_offset);
|
| 12713 |
|
|
r_type = R_PPC64_NONE;
|
| 12714 |
|
|
rel->r_info = ELF64_R_INFO (r_symndx, r_type);
|
| 12715 |
|
|
}
|
| 12716 |
|
|
}
|
| 12717 |
|
|
break;
|
| 12718 |
|
|
|
| 12719 |
|
|
case R_PPC64_TPREL64:
|
| 12720 |
|
|
if ((tls_mask & TLS_TPREL) == 0)
|
| 12721 |
|
|
{
|
| 12722 |
|
|
r_type = R_PPC64_NONE;
|
| 12723 |
|
|
rel->r_info = ELF64_R_INFO (r_symndx, r_type);
|
| 12724 |
|
|
}
|
| 12725 |
|
|
break;
|
| 12726 |
|
|
}
|
| 12727 |
|
|
|
| 12728 |
|
|
/* Handle other relocations that tweak non-addend part of insn. */
|
| 12729 |
|
|
insn = 0;
|
| 12730 |
|
|
max_br_offset = 1 << 25;
|
| 12731 |
|
|
addend = rel->r_addend;
|
| 12732 |
|
|
switch (r_type)
|
| 12733 |
|
|
{
|
| 12734 |
|
|
default:
|
| 12735 |
|
|
break;
|
| 12736 |
|
|
|
| 12737 |
163 |
khays |
case R_PPC64_TOCSAVE:
|
| 12738 |
|
|
if (relocation + addend == (rel->r_offset
|
| 12739 |
|
|
+ input_section->output_offset
|
| 12740 |
|
|
+ input_section->output_section->vma)
|
| 12741 |
|
|
&& tocsave_find (htab, NO_INSERT,
|
| 12742 |
|
|
&local_syms, rel, input_bfd))
|
| 12743 |
|
|
{
|
| 12744 |
|
|
insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
|
| 12745 |
|
|
if (insn == NOP
|
| 12746 |
|
|
|| insn == CROR_151515 || insn == CROR_313131)
|
| 12747 |
|
|
bfd_put_32 (input_bfd, STD_R2_40R1,
|
| 12748 |
|
|
contents + rel->r_offset);
|
| 12749 |
|
|
}
|
| 12750 |
|
|
break;
|
| 12751 |
|
|
|
| 12752 |
14 |
khays |
/* Branch taken prediction relocations. */
|
| 12753 |
|
|
case R_PPC64_ADDR14_BRTAKEN:
|
| 12754 |
|
|
case R_PPC64_REL14_BRTAKEN:
|
| 12755 |
|
|
insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
|
| 12756 |
|
|
/* Fall thru. */
|
| 12757 |
|
|
|
| 12758 |
|
|
/* Branch not taken prediction relocations. */
|
| 12759 |
|
|
case R_PPC64_ADDR14_BRNTAKEN:
|
| 12760 |
|
|
case R_PPC64_REL14_BRNTAKEN:
|
| 12761 |
|
|
insn |= bfd_get_32 (output_bfd,
|
| 12762 |
|
|
contents + rel->r_offset) & ~(0x01 << 21);
|
| 12763 |
|
|
/* Fall thru. */
|
| 12764 |
|
|
|
| 12765 |
|
|
case R_PPC64_REL14:
|
| 12766 |
|
|
max_br_offset = 1 << 15;
|
| 12767 |
|
|
/* Fall thru. */
|
| 12768 |
|
|
|
| 12769 |
|
|
case R_PPC64_REL24:
|
| 12770 |
|
|
/* Calls to functions with a different TOC, such as calls to
|
| 12771 |
|
|
shared objects, need to alter the TOC pointer. This is
|
| 12772 |
|
|
done using a linkage stub. A REL24 branching to these
|
| 12773 |
|
|
linkage stubs needs to be followed by a nop, as the nop
|
| 12774 |
|
|
will be replaced with an instruction to restore the TOC
|
| 12775 |
|
|
base pointer. */
|
| 12776 |
|
|
fdh = h;
|
| 12777 |
|
|
if (h != NULL
|
| 12778 |
|
|
&& h->oh != NULL
|
| 12779 |
|
|
&& h->oh->is_func_descriptor)
|
| 12780 |
|
|
fdh = ppc_follow_link (h->oh);
|
| 12781 |
|
|
stub_entry = ppc_get_stub_entry (input_section, sec, fdh, rel, htab);
|
| 12782 |
|
|
if (stub_entry != NULL
|
| 12783 |
|
|
&& (stub_entry->stub_type == ppc_stub_plt_call
|
| 12784 |
166 |
khays |
|| stub_entry->stub_type == ppc_stub_plt_call_r2save
|
| 12785 |
14 |
khays |
|| stub_entry->stub_type == ppc_stub_plt_branch_r2off
|
| 12786 |
|
|
|| stub_entry->stub_type == ppc_stub_long_branch_r2off))
|
| 12787 |
|
|
{
|
| 12788 |
|
|
bfd_boolean can_plt_call = FALSE;
|
| 12789 |
|
|
|
| 12790 |
|
|
if (rel->r_offset + 8 <= input_section->size)
|
| 12791 |
|
|
{
|
| 12792 |
|
|
unsigned long nop;
|
| 12793 |
|
|
nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
|
| 12794 |
|
|
if (nop == NOP
|
| 12795 |
|
|
|| nop == CROR_151515 || nop == CROR_313131)
|
| 12796 |
|
|
{
|
| 12797 |
|
|
if (h != NULL
|
| 12798 |
|
|
&& (h == htab->tls_get_addr_fd
|
| 12799 |
|
|
|| h == htab->tls_get_addr)
|
| 12800 |
|
|
&& !htab->no_tls_get_addr_opt)
|
| 12801 |
|
|
{
|
| 12802 |
|
|
/* Special stub used, leave nop alone. */
|
| 12803 |
|
|
}
|
| 12804 |
|
|
else
|
| 12805 |
|
|
bfd_put_32 (input_bfd, LD_R2_40R1,
|
| 12806 |
|
|
contents + rel->r_offset + 4);
|
| 12807 |
|
|
can_plt_call = TRUE;
|
| 12808 |
|
|
}
|
| 12809 |
|
|
}
|
| 12810 |
|
|
|
| 12811 |
|
|
if (!can_plt_call)
|
| 12812 |
|
|
{
|
| 12813 |
166 |
khays |
if (stub_entry->stub_type == ppc_stub_plt_call
|
| 12814 |
|
|
|| stub_entry->stub_type == ppc_stub_plt_call_r2save)
|
| 12815 |
14 |
khays |
{
|
| 12816 |
|
|
/* If this is a plain branch rather than a branch
|
| 12817 |
|
|
and link, don't require a nop. However, don't
|
| 12818 |
|
|
allow tail calls in a shared library as they
|
| 12819 |
|
|
will result in r2 being corrupted. */
|
| 12820 |
|
|
unsigned long br;
|
| 12821 |
|
|
br = bfd_get_32 (input_bfd, contents + rel->r_offset);
|
| 12822 |
|
|
if (info->executable && (br & 1) == 0)
|
| 12823 |
|
|
can_plt_call = TRUE;
|
| 12824 |
|
|
else
|
| 12825 |
|
|
stub_entry = NULL;
|
| 12826 |
|
|
}
|
| 12827 |
|
|
else if (h != NULL
|
| 12828 |
|
|
&& strcmp (h->elf.root.root.string,
|
| 12829 |
|
|
".__libc_start_main") == 0)
|
| 12830 |
|
|
{
|
| 12831 |
|
|
/* Allow crt1 branch to go via a toc adjusting stub. */
|
| 12832 |
|
|
can_plt_call = TRUE;
|
| 12833 |
|
|
}
|
| 12834 |
|
|
else
|
| 12835 |
|
|
{
|
| 12836 |
|
|
if (strcmp (input_section->output_section->name,
|
| 12837 |
|
|
".init") == 0
|
| 12838 |
|
|
|| strcmp (input_section->output_section->name,
|
| 12839 |
|
|
".fini") == 0)
|
| 12840 |
|
|
info->callbacks->einfo
|
| 12841 |
161 |
khays |
(_("%P: %H: automatic multiple TOCs "
|
| 12842 |
14 |
khays |
"not supported using your crt files; "
|
| 12843 |
|
|
"recompile with -mminimal-toc or upgrade gcc\n"),
|
| 12844 |
|
|
input_bfd, input_section, rel->r_offset);
|
| 12845 |
|
|
else
|
| 12846 |
|
|
info->callbacks->einfo
|
| 12847 |
161 |
khays |
(_("%P: %H: sibling call optimization to `%s' "
|
| 12848 |
14 |
khays |
"does not allow automatic multiple TOCs; "
|
| 12849 |
|
|
"recompile with -mminimal-toc or "
|
| 12850 |
|
|
"-fno-optimize-sibling-calls, "
|
| 12851 |
|
|
"or make `%s' extern\n"),
|
| 12852 |
|
|
input_bfd, input_section, rel->r_offset,
|
| 12853 |
|
|
sym_name,
|
| 12854 |
|
|
sym_name);
|
| 12855 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 12856 |
|
|
ret = FALSE;
|
| 12857 |
|
|
}
|
| 12858 |
|
|
}
|
| 12859 |
|
|
|
| 12860 |
|
|
if (can_plt_call
|
| 12861 |
166 |
khays |
&& (stub_entry->stub_type == ppc_stub_plt_call
|
| 12862 |
|
|
|| stub_entry->stub_type == ppc_stub_plt_call_r2save))
|
| 12863 |
14 |
khays |
unresolved_reloc = FALSE;
|
| 12864 |
|
|
}
|
| 12865 |
|
|
|
| 12866 |
|
|
if ((stub_entry == NULL
|
| 12867 |
|
|
|| stub_entry->stub_type == ppc_stub_long_branch
|
| 12868 |
|
|
|| stub_entry->stub_type == ppc_stub_plt_branch)
|
| 12869 |
|
|
&& get_opd_info (sec) != NULL)
|
| 12870 |
|
|
{
|
| 12871 |
|
|
/* The branch destination is the value of the opd entry. */
|
| 12872 |
|
|
bfd_vma off = (relocation + addend
|
| 12873 |
|
|
- sec->output_section->vma
|
| 12874 |
|
|
- sec->output_offset);
|
| 12875 |
|
|
bfd_vma dest = opd_entry_value (sec, off, NULL, NULL);
|
| 12876 |
|
|
if (dest != (bfd_vma) -1)
|
| 12877 |
|
|
{
|
| 12878 |
|
|
relocation = dest;
|
| 12879 |
|
|
addend = 0;
|
| 12880 |
|
|
}
|
| 12881 |
|
|
}
|
| 12882 |
|
|
|
| 12883 |
|
|
/* If the branch is out of reach we ought to have a long
|
| 12884 |
|
|
branch stub. */
|
| 12885 |
|
|
from = (rel->r_offset
|
| 12886 |
|
|
+ input_section->output_offset
|
| 12887 |
|
|
+ input_section->output_section->vma);
|
| 12888 |
|
|
|
| 12889 |
|
|
if (stub_entry != NULL
|
| 12890 |
|
|
&& (stub_entry->stub_type == ppc_stub_long_branch
|
| 12891 |
|
|
|| stub_entry->stub_type == ppc_stub_plt_branch)
|
| 12892 |
|
|
&& (r_type == R_PPC64_ADDR14_BRTAKEN
|
| 12893 |
|
|
|| r_type == R_PPC64_ADDR14_BRNTAKEN
|
| 12894 |
|
|
|| (relocation + addend - from + max_br_offset
|
| 12895 |
|
|
< 2 * max_br_offset)))
|
| 12896 |
|
|
/* Don't use the stub if this branch is in range. */
|
| 12897 |
|
|
stub_entry = NULL;
|
| 12898 |
|
|
|
| 12899 |
|
|
if (stub_entry != NULL)
|
| 12900 |
|
|
{
|
| 12901 |
|
|
/* Munge up the value and addend so that we call the stub
|
| 12902 |
|
|
rather than the procedure directly. */
|
| 12903 |
|
|
relocation = (stub_entry->stub_offset
|
| 12904 |
|
|
+ stub_entry->stub_sec->output_offset
|
| 12905 |
|
|
+ stub_entry->stub_sec->output_section->vma);
|
| 12906 |
|
|
addend = 0;
|
| 12907 |
163 |
khays |
|
| 12908 |
166 |
khays |
if ((stub_entry->stub_type == ppc_stub_plt_call
|
| 12909 |
|
|
|| stub_entry->stub_type == ppc_stub_plt_call_r2save)
|
| 12910 |
|
|
&& (ALWAYS_EMIT_R2SAVE
|
| 12911 |
|
|
|| stub_entry->stub_type == ppc_stub_plt_call_r2save)
|
| 12912 |
163 |
khays |
&& rel + 1 < relend
|
| 12913 |
|
|
&& rel[1].r_offset == rel->r_offset + 4
|
| 12914 |
|
|
&& ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)
|
| 12915 |
|
|
relocation += 4;
|
| 12916 |
14 |
khays |
}
|
| 12917 |
|
|
|
| 12918 |
|
|
if (insn != 0)
|
| 12919 |
|
|
{
|
| 12920 |
166 |
khays |
if (is_isa_v2)
|
| 12921 |
14 |
khays |
{
|
| 12922 |
|
|
/* Set 'a' bit. This is 0b00010 in BO field for branch
|
| 12923 |
|
|
on CR(BI) insns (BO == 001at or 011at), and 0b01000
|
| 12924 |
|
|
for branch on CTR insns (BO == 1a00t or 1a01t). */
|
| 12925 |
|
|
if ((insn & (0x14 << 21)) == (0x04 << 21))
|
| 12926 |
|
|
insn |= 0x02 << 21;
|
| 12927 |
|
|
else if ((insn & (0x14 << 21)) == (0x10 << 21))
|
| 12928 |
|
|
insn |= 0x08 << 21;
|
| 12929 |
|
|
else
|
| 12930 |
|
|
break;
|
| 12931 |
|
|
}
|
| 12932 |
|
|
else
|
| 12933 |
|
|
{
|
| 12934 |
|
|
/* Invert 'y' bit if not the default. */
|
| 12935 |
|
|
if ((bfd_signed_vma) (relocation + addend - from) < 0)
|
| 12936 |
|
|
insn ^= 0x01 << 21;
|
| 12937 |
|
|
}
|
| 12938 |
|
|
|
| 12939 |
|
|
bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
|
| 12940 |
|
|
}
|
| 12941 |
|
|
|
| 12942 |
|
|
/* NOP out calls to undefined weak functions.
|
| 12943 |
|
|
We can thus call a weak function without first
|
| 12944 |
|
|
checking whether the function is defined. */
|
| 12945 |
|
|
else if (h != NULL
|
| 12946 |
|
|
&& h->elf.root.type == bfd_link_hash_undefweak
|
| 12947 |
|
|
&& h->elf.dynindx == -1
|
| 12948 |
|
|
&& r_type == R_PPC64_REL24
|
| 12949 |
|
|
&& relocation == 0
|
| 12950 |
|
|
&& addend == 0)
|
| 12951 |
|
|
{
|
| 12952 |
|
|
bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
|
| 12953 |
|
|
continue;
|
| 12954 |
|
|
}
|
| 12955 |
|
|
break;
|
| 12956 |
|
|
}
|
| 12957 |
|
|
|
| 12958 |
|
|
/* Set `addend'. */
|
| 12959 |
|
|
tls_type = 0;
|
| 12960 |
|
|
switch (r_type)
|
| 12961 |
|
|
{
|
| 12962 |
|
|
default:
|
| 12963 |
|
|
info->callbacks->einfo
|
| 12964 |
161 |
khays |
(_("%P: %B: unknown relocation type %d for symbol %s\n"),
|
| 12965 |
14 |
khays |
input_bfd, (int) r_type, sym_name);
|
| 12966 |
|
|
|
| 12967 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 12968 |
|
|
ret = FALSE;
|
| 12969 |
|
|
continue;
|
| 12970 |
|
|
|
| 12971 |
|
|
case R_PPC64_NONE:
|
| 12972 |
|
|
case R_PPC64_TLS:
|
| 12973 |
|
|
case R_PPC64_TLSGD:
|
| 12974 |
|
|
case R_PPC64_TLSLD:
|
| 12975 |
163 |
khays |
case R_PPC64_TOCSAVE:
|
| 12976 |
14 |
khays |
case R_PPC64_GNU_VTINHERIT:
|
| 12977 |
|
|
case R_PPC64_GNU_VTENTRY:
|
| 12978 |
|
|
continue;
|
| 12979 |
|
|
|
| 12980 |
|
|
/* GOT16 relocations. Like an ADDR16 using the symbol's
|
| 12981 |
|
|
address in the GOT as relocation value instead of the
|
| 12982 |
|
|
symbol's value itself. Also, create a GOT entry for the
|
| 12983 |
|
|
symbol and put the symbol value there. */
|
| 12984 |
|
|
case R_PPC64_GOT_TLSGD16:
|
| 12985 |
|
|
case R_PPC64_GOT_TLSGD16_LO:
|
| 12986 |
|
|
case R_PPC64_GOT_TLSGD16_HI:
|
| 12987 |
|
|
case R_PPC64_GOT_TLSGD16_HA:
|
| 12988 |
|
|
tls_type = TLS_TLS | TLS_GD;
|
| 12989 |
|
|
goto dogot;
|
| 12990 |
|
|
|
| 12991 |
|
|
case R_PPC64_GOT_TLSLD16:
|
| 12992 |
|
|
case R_PPC64_GOT_TLSLD16_LO:
|
| 12993 |
|
|
case R_PPC64_GOT_TLSLD16_HI:
|
| 12994 |
|
|
case R_PPC64_GOT_TLSLD16_HA:
|
| 12995 |
|
|
tls_type = TLS_TLS | TLS_LD;
|
| 12996 |
|
|
goto dogot;
|
| 12997 |
|
|
|
| 12998 |
|
|
case R_PPC64_GOT_TPREL16_DS:
|
| 12999 |
|
|
case R_PPC64_GOT_TPREL16_LO_DS:
|
| 13000 |
|
|
case R_PPC64_GOT_TPREL16_HI:
|
| 13001 |
|
|
case R_PPC64_GOT_TPREL16_HA:
|
| 13002 |
|
|
tls_type = TLS_TLS | TLS_TPREL;
|
| 13003 |
|
|
goto dogot;
|
| 13004 |
|
|
|
| 13005 |
|
|
case R_PPC64_GOT_DTPREL16_DS:
|
| 13006 |
|
|
case R_PPC64_GOT_DTPREL16_LO_DS:
|
| 13007 |
|
|
case R_PPC64_GOT_DTPREL16_HI:
|
| 13008 |
|
|
case R_PPC64_GOT_DTPREL16_HA:
|
| 13009 |
|
|
tls_type = TLS_TLS | TLS_DTPREL;
|
| 13010 |
|
|
goto dogot;
|
| 13011 |
|
|
|
| 13012 |
|
|
case R_PPC64_GOT16:
|
| 13013 |
|
|
case R_PPC64_GOT16_LO:
|
| 13014 |
|
|
case R_PPC64_GOT16_HI:
|
| 13015 |
|
|
case R_PPC64_GOT16_HA:
|
| 13016 |
|
|
case R_PPC64_GOT16_DS:
|
| 13017 |
|
|
case R_PPC64_GOT16_LO_DS:
|
| 13018 |
|
|
dogot:
|
| 13019 |
|
|
{
|
| 13020 |
|
|
/* Relocation is to the entry for this symbol in the global
|
| 13021 |
|
|
offset table. */
|
| 13022 |
|
|
asection *got;
|
| 13023 |
|
|
bfd_vma *offp;
|
| 13024 |
|
|
bfd_vma off;
|
| 13025 |
|
|
unsigned long indx = 0;
|
| 13026 |
|
|
struct got_entry *ent;
|
| 13027 |
|
|
|
| 13028 |
|
|
if (tls_type == (TLS_TLS | TLS_LD)
|
| 13029 |
|
|
&& (h == NULL
|
| 13030 |
|
|
|| !h->elf.def_dynamic))
|
| 13031 |
|
|
ent = ppc64_tlsld_got (input_bfd);
|
| 13032 |
|
|
else
|
| 13033 |
|
|
{
|
| 13034 |
|
|
|
| 13035 |
|
|
if (h != NULL)
|
| 13036 |
|
|
{
|
| 13037 |
|
|
bfd_boolean dyn = htab->elf.dynamic_sections_created;
|
| 13038 |
|
|
if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared,
|
| 13039 |
|
|
&h->elf)
|
| 13040 |
|
|
|| (info->shared
|
| 13041 |
|
|
&& SYMBOL_CALLS_LOCAL (info, &h->elf)))
|
| 13042 |
|
|
/* This is actually a static link, or it is a
|
| 13043 |
|
|
-Bsymbolic link and the symbol is defined
|
| 13044 |
|
|
locally, or the symbol was forced to be local
|
| 13045 |
|
|
because of a version file. */
|
| 13046 |
|
|
;
|
| 13047 |
|
|
else
|
| 13048 |
|
|
{
|
| 13049 |
|
|
indx = h->elf.dynindx;
|
| 13050 |
|
|
unresolved_reloc = FALSE;
|
| 13051 |
|
|
}
|
| 13052 |
|
|
ent = h->elf.got.glist;
|
| 13053 |
|
|
}
|
| 13054 |
|
|
else
|
| 13055 |
|
|
{
|
| 13056 |
|
|
if (local_got_ents == NULL)
|
| 13057 |
|
|
abort ();
|
| 13058 |
|
|
ent = local_got_ents[r_symndx];
|
| 13059 |
|
|
}
|
| 13060 |
|
|
|
| 13061 |
|
|
for (; ent != NULL; ent = ent->next)
|
| 13062 |
|
|
if (ent->addend == orig_addend
|
| 13063 |
|
|
&& ent->owner == input_bfd
|
| 13064 |
|
|
&& ent->tls_type == tls_type)
|
| 13065 |
|
|
break;
|
| 13066 |
|
|
}
|
| 13067 |
|
|
|
| 13068 |
|
|
if (ent == NULL)
|
| 13069 |
|
|
abort ();
|
| 13070 |
|
|
if (ent->is_indirect)
|
| 13071 |
|
|
ent = ent->got.ent;
|
| 13072 |
|
|
offp = &ent->got.offset;
|
| 13073 |
|
|
got = ppc64_elf_tdata (ent->owner)->got;
|
| 13074 |
|
|
if (got == NULL)
|
| 13075 |
|
|
abort ();
|
| 13076 |
|
|
|
| 13077 |
|
|
/* The offset must always be a multiple of 8. We use the
|
| 13078 |
|
|
least significant bit to record whether we have already
|
| 13079 |
|
|
processed this entry. */
|
| 13080 |
|
|
off = *offp;
|
| 13081 |
|
|
if ((off & 1) != 0)
|
| 13082 |
|
|
off &= ~1;
|
| 13083 |
|
|
else
|
| 13084 |
|
|
{
|
| 13085 |
|
|
/* Generate relocs for the dynamic linker, except in
|
| 13086 |
|
|
the case of TLSLD where we'll use one entry per
|
| 13087 |
|
|
module. */
|
| 13088 |
|
|
asection *relgot;
|
| 13089 |
|
|
bfd_boolean ifunc;
|
| 13090 |
|
|
|
| 13091 |
|
|
*offp = off | 1;
|
| 13092 |
|
|
relgot = NULL;
|
| 13093 |
|
|
ifunc = (h != NULL
|
| 13094 |
|
|
? h->elf.type == STT_GNU_IFUNC
|
| 13095 |
|
|
: ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC);
|
| 13096 |
|
|
if ((info->shared || indx != 0)
|
| 13097 |
|
|
&& (h == NULL
|
| 13098 |
|
|
|| (tls_type == (TLS_TLS | TLS_LD)
|
| 13099 |
|
|
&& !h->elf.def_dynamic)
|
| 13100 |
|
|
|| ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
|
| 13101 |
|
|
|| h->elf.root.type != bfd_link_hash_undefweak))
|
| 13102 |
|
|
relgot = ppc64_elf_tdata (ent->owner)->relgot;
|
| 13103 |
|
|
else if (ifunc)
|
| 13104 |
|
|
relgot = htab->reliplt;
|
| 13105 |
|
|
if (relgot != NULL)
|
| 13106 |
|
|
{
|
| 13107 |
|
|
outrel.r_offset = (got->output_section->vma
|
| 13108 |
|
|
+ got->output_offset
|
| 13109 |
|
|
+ off);
|
| 13110 |
|
|
outrel.r_addend = addend;
|
| 13111 |
|
|
if (tls_type & (TLS_LD | TLS_GD))
|
| 13112 |
|
|
{
|
| 13113 |
|
|
outrel.r_addend = 0;
|
| 13114 |
|
|
outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64);
|
| 13115 |
|
|
if (tls_type == (TLS_TLS | TLS_GD))
|
| 13116 |
|
|
{
|
| 13117 |
|
|
loc = relgot->contents;
|
| 13118 |
|
|
loc += (relgot->reloc_count++
|
| 13119 |
|
|
* sizeof (Elf64_External_Rela));
|
| 13120 |
|
|
bfd_elf64_swap_reloca_out (output_bfd,
|
| 13121 |
|
|
&outrel, loc);
|
| 13122 |
|
|
outrel.r_offset += 8;
|
| 13123 |
|
|
outrel.r_addend = addend;
|
| 13124 |
|
|
outrel.r_info
|
| 13125 |
|
|
= ELF64_R_INFO (indx, R_PPC64_DTPREL64);
|
| 13126 |
|
|
}
|
| 13127 |
|
|
}
|
| 13128 |
|
|
else if (tls_type == (TLS_TLS | TLS_DTPREL))
|
| 13129 |
|
|
outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64);
|
| 13130 |
|
|
else if (tls_type == (TLS_TLS | TLS_TPREL))
|
| 13131 |
|
|
outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64);
|
| 13132 |
|
|
else if (indx != 0)
|
| 13133 |
|
|
outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT);
|
| 13134 |
|
|
else
|
| 13135 |
|
|
{
|
| 13136 |
|
|
if (ifunc)
|
| 13137 |
|
|
outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
|
| 13138 |
|
|
else
|
| 13139 |
|
|
outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
|
| 13140 |
|
|
|
| 13141 |
|
|
/* Write the .got section contents for the sake
|
| 13142 |
|
|
of prelink. */
|
| 13143 |
|
|
loc = got->contents + off;
|
| 13144 |
|
|
bfd_put_64 (output_bfd, outrel.r_addend + relocation,
|
| 13145 |
|
|
loc);
|
| 13146 |
|
|
}
|
| 13147 |
|
|
|
| 13148 |
|
|
if (indx == 0 && tls_type != (TLS_TLS | TLS_LD))
|
| 13149 |
|
|
{
|
| 13150 |
|
|
outrel.r_addend += relocation;
|
| 13151 |
|
|
if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL))
|
| 13152 |
|
|
outrel.r_addend -= htab->elf.tls_sec->vma;
|
| 13153 |
|
|
}
|
| 13154 |
|
|
loc = relgot->contents;
|
| 13155 |
|
|
loc += (relgot->reloc_count++
|
| 13156 |
|
|
* sizeof (Elf64_External_Rela));
|
| 13157 |
|
|
bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
|
| 13158 |
|
|
}
|
| 13159 |
|
|
|
| 13160 |
|
|
/* Init the .got section contents here if we're not
|
| 13161 |
|
|
emitting a reloc. */
|
| 13162 |
|
|
else
|
| 13163 |
|
|
{
|
| 13164 |
|
|
relocation += addend;
|
| 13165 |
|
|
if (tls_type == (TLS_TLS | TLS_LD))
|
| 13166 |
|
|
relocation = 1;
|
| 13167 |
|
|
else if (tls_type != 0)
|
| 13168 |
|
|
{
|
| 13169 |
|
|
relocation -= htab->elf.tls_sec->vma + DTP_OFFSET;
|
| 13170 |
|
|
if (tls_type == (TLS_TLS | TLS_TPREL))
|
| 13171 |
|
|
relocation += DTP_OFFSET - TP_OFFSET;
|
| 13172 |
|
|
|
| 13173 |
|
|
if (tls_type == (TLS_TLS | TLS_GD))
|
| 13174 |
|
|
{
|
| 13175 |
|
|
bfd_put_64 (output_bfd, relocation,
|
| 13176 |
|
|
got->contents + off + 8);
|
| 13177 |
|
|
relocation = 1;
|
| 13178 |
|
|
}
|
| 13179 |
|
|
}
|
| 13180 |
|
|
|
| 13181 |
|
|
bfd_put_64 (output_bfd, relocation,
|
| 13182 |
|
|
got->contents + off);
|
| 13183 |
|
|
}
|
| 13184 |
|
|
}
|
| 13185 |
|
|
|
| 13186 |
|
|
if (off >= (bfd_vma) -2)
|
| 13187 |
|
|
abort ();
|
| 13188 |
|
|
|
| 13189 |
|
|
relocation = got->output_section->vma + got->output_offset + off;
|
| 13190 |
|
|
addend = -(TOCstart + htab->stub_group[input_section->id].toc_off);
|
| 13191 |
|
|
}
|
| 13192 |
|
|
break;
|
| 13193 |
|
|
|
| 13194 |
|
|
case R_PPC64_PLT16_HA:
|
| 13195 |
|
|
case R_PPC64_PLT16_HI:
|
| 13196 |
|
|
case R_PPC64_PLT16_LO:
|
| 13197 |
|
|
case R_PPC64_PLT32:
|
| 13198 |
|
|
case R_PPC64_PLT64:
|
| 13199 |
|
|
/* Relocation is to the entry for this symbol in the
|
| 13200 |
|
|
procedure linkage table. */
|
| 13201 |
|
|
|
| 13202 |
|
|
/* Resolve a PLT reloc against a local symbol directly,
|
| 13203 |
|
|
without using the procedure linkage table. */
|
| 13204 |
|
|
if (h == NULL)
|
| 13205 |
|
|
break;
|
| 13206 |
|
|
|
| 13207 |
|
|
/* It's possible that we didn't make a PLT entry for this
|
| 13208 |
|
|
symbol. This happens when statically linking PIC code,
|
| 13209 |
|
|
or when using -Bsymbolic. Go find a match if there is a
|
| 13210 |
|
|
PLT entry. */
|
| 13211 |
|
|
if (htab->plt != NULL)
|
| 13212 |
|
|
{
|
| 13213 |
|
|
struct plt_entry *ent;
|
| 13214 |
|
|
for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next)
|
| 13215 |
|
|
if (ent->addend == orig_addend
|
| 13216 |
|
|
&& ent->plt.offset != (bfd_vma) -1)
|
| 13217 |
|
|
{
|
| 13218 |
|
|
relocation = (htab->plt->output_section->vma
|
| 13219 |
|
|
+ htab->plt->output_offset
|
| 13220 |
|
|
+ ent->plt.offset);
|
| 13221 |
|
|
unresolved_reloc = FALSE;
|
| 13222 |
|
|
}
|
| 13223 |
|
|
}
|
| 13224 |
|
|
break;
|
| 13225 |
|
|
|
| 13226 |
|
|
case R_PPC64_TOC:
|
| 13227 |
|
|
/* Relocation value is TOC base. */
|
| 13228 |
|
|
relocation = TOCstart;
|
| 13229 |
|
|
if (r_symndx == STN_UNDEF)
|
| 13230 |
|
|
relocation += htab->stub_group[input_section->id].toc_off;
|
| 13231 |
|
|
else if (unresolved_reloc)
|
| 13232 |
|
|
;
|
| 13233 |
|
|
else if (sec != NULL && sec->id <= htab->top_id)
|
| 13234 |
|
|
relocation += htab->stub_group[sec->id].toc_off;
|
| 13235 |
|
|
else
|
| 13236 |
|
|
unresolved_reloc = TRUE;
|
| 13237 |
|
|
goto dodyn;
|
| 13238 |
|
|
|
| 13239 |
|
|
/* TOC16 relocs. We want the offset relative to the TOC base,
|
| 13240 |
|
|
which is the address of the start of the TOC plus 0x8000.
|
| 13241 |
|
|
The TOC consists of sections .got, .toc, .tocbss, and .plt,
|
| 13242 |
|
|
in this order. */
|
| 13243 |
|
|
case R_PPC64_TOC16:
|
| 13244 |
|
|
case R_PPC64_TOC16_LO:
|
| 13245 |
|
|
case R_PPC64_TOC16_HI:
|
| 13246 |
|
|
case R_PPC64_TOC16_DS:
|
| 13247 |
|
|
case R_PPC64_TOC16_LO_DS:
|
| 13248 |
|
|
case R_PPC64_TOC16_HA:
|
| 13249 |
|
|
addend -= TOCstart + htab->stub_group[input_section->id].toc_off;
|
| 13250 |
|
|
break;
|
| 13251 |
|
|
|
| 13252 |
|
|
/* Relocate against the beginning of the section. */
|
| 13253 |
|
|
case R_PPC64_SECTOFF:
|
| 13254 |
|
|
case R_PPC64_SECTOFF_LO:
|
| 13255 |
|
|
case R_PPC64_SECTOFF_HI:
|
| 13256 |
|
|
case R_PPC64_SECTOFF_DS:
|
| 13257 |
|
|
case R_PPC64_SECTOFF_LO_DS:
|
| 13258 |
|
|
case R_PPC64_SECTOFF_HA:
|
| 13259 |
|
|
if (sec != NULL)
|
| 13260 |
|
|
addend -= sec->output_section->vma;
|
| 13261 |
|
|
break;
|
| 13262 |
|
|
|
| 13263 |
|
|
case R_PPC64_REL16:
|
| 13264 |
|
|
case R_PPC64_REL16_LO:
|
| 13265 |
|
|
case R_PPC64_REL16_HI:
|
| 13266 |
|
|
case R_PPC64_REL16_HA:
|
| 13267 |
|
|
break;
|
| 13268 |
|
|
|
| 13269 |
|
|
case R_PPC64_REL14:
|
| 13270 |
|
|
case R_PPC64_REL14_BRNTAKEN:
|
| 13271 |
|
|
case R_PPC64_REL14_BRTAKEN:
|
| 13272 |
|
|
case R_PPC64_REL24:
|
| 13273 |
|
|
break;
|
| 13274 |
|
|
|
| 13275 |
|
|
case R_PPC64_TPREL16:
|
| 13276 |
|
|
case R_PPC64_TPREL16_LO:
|
| 13277 |
|
|
case R_PPC64_TPREL16_HI:
|
| 13278 |
|
|
case R_PPC64_TPREL16_HA:
|
| 13279 |
|
|
case R_PPC64_TPREL16_DS:
|
| 13280 |
|
|
case R_PPC64_TPREL16_LO_DS:
|
| 13281 |
|
|
case R_PPC64_TPREL16_HIGHER:
|
| 13282 |
|
|
case R_PPC64_TPREL16_HIGHERA:
|
| 13283 |
|
|
case R_PPC64_TPREL16_HIGHEST:
|
| 13284 |
|
|
case R_PPC64_TPREL16_HIGHESTA:
|
| 13285 |
|
|
if (h != NULL
|
| 13286 |
|
|
&& h->elf.root.type == bfd_link_hash_undefweak
|
| 13287 |
|
|
&& h->elf.dynindx == -1)
|
| 13288 |
|
|
{
|
| 13289 |
|
|
/* Make this relocation against an undefined weak symbol
|
| 13290 |
|
|
resolve to zero. This is really just a tweak, since
|
| 13291 |
|
|
code using weak externs ought to check that they are
|
| 13292 |
|
|
defined before using them. */
|
| 13293 |
|
|
bfd_byte *p = contents + rel->r_offset - d_offset;
|
| 13294 |
|
|
|
| 13295 |
|
|
insn = bfd_get_32 (output_bfd, p);
|
| 13296 |
|
|
insn = _bfd_elf_ppc_at_tprel_transform (insn, 13);
|
| 13297 |
|
|
if (insn != 0)
|
| 13298 |
|
|
bfd_put_32 (output_bfd, insn, p);
|
| 13299 |
|
|
break;
|
| 13300 |
|
|
}
|
| 13301 |
|
|
addend -= htab->elf.tls_sec->vma + TP_OFFSET;
|
| 13302 |
|
|
if (info->shared)
|
| 13303 |
|
|
/* The TPREL16 relocs shouldn't really be used in shared
|
| 13304 |
|
|
libs as they will result in DT_TEXTREL being set, but
|
| 13305 |
|
|
support them anyway. */
|
| 13306 |
|
|
goto dodyn;
|
| 13307 |
|
|
break;
|
| 13308 |
|
|
|
| 13309 |
|
|
case R_PPC64_DTPREL16:
|
| 13310 |
|
|
case R_PPC64_DTPREL16_LO:
|
| 13311 |
|
|
case R_PPC64_DTPREL16_HI:
|
| 13312 |
|
|
case R_PPC64_DTPREL16_HA:
|
| 13313 |
|
|
case R_PPC64_DTPREL16_DS:
|
| 13314 |
|
|
case R_PPC64_DTPREL16_LO_DS:
|
| 13315 |
|
|
case R_PPC64_DTPREL16_HIGHER:
|
| 13316 |
|
|
case R_PPC64_DTPREL16_HIGHERA:
|
| 13317 |
|
|
case R_PPC64_DTPREL16_HIGHEST:
|
| 13318 |
|
|
case R_PPC64_DTPREL16_HIGHESTA:
|
| 13319 |
|
|
addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
|
| 13320 |
|
|
break;
|
| 13321 |
|
|
|
| 13322 |
|
|
case R_PPC64_DTPMOD64:
|
| 13323 |
|
|
relocation = 1;
|
| 13324 |
|
|
addend = 0;
|
| 13325 |
|
|
goto dodyn;
|
| 13326 |
|
|
|
| 13327 |
|
|
case R_PPC64_TPREL64:
|
| 13328 |
|
|
addend -= htab->elf.tls_sec->vma + TP_OFFSET;
|
| 13329 |
|
|
goto dodyn;
|
| 13330 |
|
|
|
| 13331 |
|
|
case R_PPC64_DTPREL64:
|
| 13332 |
|
|
addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
|
| 13333 |
|
|
/* Fall thru */
|
| 13334 |
|
|
|
| 13335 |
|
|
/* Relocations that may need to be propagated if this is a
|
| 13336 |
|
|
dynamic object. */
|
| 13337 |
|
|
case R_PPC64_REL30:
|
| 13338 |
|
|
case R_PPC64_REL32:
|
| 13339 |
|
|
case R_PPC64_REL64:
|
| 13340 |
|
|
case R_PPC64_ADDR14:
|
| 13341 |
|
|
case R_PPC64_ADDR14_BRNTAKEN:
|
| 13342 |
|
|
case R_PPC64_ADDR14_BRTAKEN:
|
| 13343 |
|
|
case R_PPC64_ADDR16:
|
| 13344 |
|
|
case R_PPC64_ADDR16_DS:
|
| 13345 |
|
|
case R_PPC64_ADDR16_HA:
|
| 13346 |
|
|
case R_PPC64_ADDR16_HI:
|
| 13347 |
|
|
case R_PPC64_ADDR16_HIGHER:
|
| 13348 |
|
|
case R_PPC64_ADDR16_HIGHERA:
|
| 13349 |
|
|
case R_PPC64_ADDR16_HIGHEST:
|
| 13350 |
|
|
case R_PPC64_ADDR16_HIGHESTA:
|
| 13351 |
|
|
case R_PPC64_ADDR16_LO:
|
| 13352 |
|
|
case R_PPC64_ADDR16_LO_DS:
|
| 13353 |
|
|
case R_PPC64_ADDR24:
|
| 13354 |
|
|
case R_PPC64_ADDR32:
|
| 13355 |
|
|
case R_PPC64_ADDR64:
|
| 13356 |
|
|
case R_PPC64_UADDR16:
|
| 13357 |
|
|
case R_PPC64_UADDR32:
|
| 13358 |
|
|
case R_PPC64_UADDR64:
|
| 13359 |
|
|
dodyn:
|
| 13360 |
|
|
if ((input_section->flags & SEC_ALLOC) == 0)
|
| 13361 |
|
|
break;
|
| 13362 |
|
|
|
| 13363 |
|
|
if (NO_OPD_RELOCS && is_opd)
|
| 13364 |
|
|
break;
|
| 13365 |
|
|
|
| 13366 |
|
|
if ((info->shared
|
| 13367 |
|
|
&& (h == NULL
|
| 13368 |
|
|
|| ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
|
| 13369 |
|
|
|| h->elf.root.type != bfd_link_hash_undefweak)
|
| 13370 |
|
|
&& (must_be_dyn_reloc (info, r_type)
|
| 13371 |
|
|
|| !SYMBOL_CALLS_LOCAL (info, &h->elf)))
|
| 13372 |
|
|
|| (ELIMINATE_COPY_RELOCS
|
| 13373 |
|
|
&& !info->shared
|
| 13374 |
|
|
&& h != NULL
|
| 13375 |
|
|
&& h->elf.dynindx != -1
|
| 13376 |
|
|
&& !h->elf.non_got_ref
|
| 13377 |
|
|
&& !h->elf.def_regular)
|
| 13378 |
|
|
|| (!info->shared
|
| 13379 |
|
|
&& (h != NULL
|
| 13380 |
|
|
? h->elf.type == STT_GNU_IFUNC
|
| 13381 |
|
|
: ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)))
|
| 13382 |
|
|
{
|
| 13383 |
|
|
bfd_boolean skip, relocate;
|
| 13384 |
|
|
asection *sreloc;
|
| 13385 |
|
|
bfd_vma out_off;
|
| 13386 |
|
|
|
| 13387 |
|
|
/* When generating a dynamic object, these relocations
|
| 13388 |
|
|
are copied into the output file to be resolved at run
|
| 13389 |
|
|
time. */
|
| 13390 |
|
|
|
| 13391 |
|
|
skip = FALSE;
|
| 13392 |
|
|
relocate = FALSE;
|
| 13393 |
|
|
|
| 13394 |
|
|
out_off = _bfd_elf_section_offset (output_bfd, info,
|
| 13395 |
|
|
input_section, rel->r_offset);
|
| 13396 |
|
|
if (out_off == (bfd_vma) -1)
|
| 13397 |
|
|
skip = TRUE;
|
| 13398 |
|
|
else if (out_off == (bfd_vma) -2)
|
| 13399 |
|
|
skip = TRUE, relocate = TRUE;
|
| 13400 |
|
|
out_off += (input_section->output_section->vma
|
| 13401 |
|
|
+ input_section->output_offset);
|
| 13402 |
|
|
outrel.r_offset = out_off;
|
| 13403 |
|
|
outrel.r_addend = rel->r_addend;
|
| 13404 |
|
|
|
| 13405 |
|
|
/* Optimize unaligned reloc use. */
|
| 13406 |
|
|
if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0)
|
| 13407 |
|
|
|| (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0))
|
| 13408 |
|
|
r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64;
|
| 13409 |
|
|
else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0)
|
| 13410 |
|
|
|| (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0))
|
| 13411 |
|
|
r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32;
|
| 13412 |
|
|
else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0)
|
| 13413 |
|
|
|| (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0))
|
| 13414 |
|
|
r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16;
|
| 13415 |
|
|
|
| 13416 |
|
|
if (skip)
|
| 13417 |
|
|
memset (&outrel, 0, sizeof outrel);
|
| 13418 |
|
|
else if (!SYMBOL_CALLS_LOCAL (info, &h->elf)
|
| 13419 |
|
|
&& !is_opd
|
| 13420 |
|
|
&& r_type != R_PPC64_TOC)
|
| 13421 |
|
|
outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type);
|
| 13422 |
|
|
else
|
| 13423 |
|
|
{
|
| 13424 |
|
|
/* This symbol is local, or marked to become local,
|
| 13425 |
|
|
or this is an opd section reloc which must point
|
| 13426 |
|
|
at a local function. */
|
| 13427 |
|
|
outrel.r_addend += relocation;
|
| 13428 |
|
|
if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
|
| 13429 |
|
|
{
|
| 13430 |
|
|
if (is_opd && h != NULL)
|
| 13431 |
|
|
{
|
| 13432 |
|
|
/* Lie about opd entries. This case occurs
|
| 13433 |
|
|
when building shared libraries and we
|
| 13434 |
|
|
reference a function in another shared
|
| 13435 |
|
|
lib. The same thing happens for a weak
|
| 13436 |
|
|
definition in an application that's
|
| 13437 |
|
|
overridden by a strong definition in a
|
| 13438 |
|
|
shared lib. (I believe this is a generic
|
| 13439 |
|
|
bug in binutils handling of weak syms.)
|
| 13440 |
|
|
In these cases we won't use the opd
|
| 13441 |
|
|
entry in this lib. */
|
| 13442 |
|
|
unresolved_reloc = FALSE;
|
| 13443 |
|
|
}
|
| 13444 |
|
|
if (!is_opd
|
| 13445 |
|
|
&& r_type == R_PPC64_ADDR64
|
| 13446 |
|
|
&& (h != NULL
|
| 13447 |
|
|
? h->elf.type == STT_GNU_IFUNC
|
| 13448 |
|
|
: ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))
|
| 13449 |
|
|
outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
|
| 13450 |
|
|
else
|
| 13451 |
|
|
{
|
| 13452 |
|
|
outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
|
| 13453 |
|
|
|
| 13454 |
|
|
/* We need to relocate .opd contents for ld.so.
|
| 13455 |
|
|
Prelink also wants simple and consistent rules
|
| 13456 |
|
|
for relocs. This make all RELATIVE relocs have
|
| 13457 |
|
|
*r_offset equal to r_addend. */
|
| 13458 |
|
|
relocate = TRUE;
|
| 13459 |
|
|
}
|
| 13460 |
|
|
}
|
| 13461 |
|
|
else
|
| 13462 |
|
|
{
|
| 13463 |
|
|
long indx = 0;
|
| 13464 |
|
|
|
| 13465 |
|
|
if (h != NULL
|
| 13466 |
|
|
? h->elf.type == STT_GNU_IFUNC
|
| 13467 |
|
|
: ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
|
| 13468 |
|
|
{
|
| 13469 |
|
|
info->callbacks->einfo
|
| 13470 |
161 |
khays |
(_("%P: %H: relocation %s for indirect "
|
| 13471 |
14 |
khays |
"function %s unsupported\n"),
|
| 13472 |
|
|
input_bfd, input_section, rel->r_offset,
|
| 13473 |
|
|
ppc64_elf_howto_table[r_type]->name,
|
| 13474 |
|
|
sym_name);
|
| 13475 |
|
|
ret = FALSE;
|
| 13476 |
|
|
}
|
| 13477 |
|
|
else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
|
| 13478 |
|
|
;
|
| 13479 |
|
|
else if (sec == NULL || sec->owner == NULL)
|
| 13480 |
|
|
{
|
| 13481 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 13482 |
|
|
return FALSE;
|
| 13483 |
|
|
}
|
| 13484 |
|
|
else
|
| 13485 |
|
|
{
|
| 13486 |
|
|
asection *osec;
|
| 13487 |
|
|
|
| 13488 |
|
|
osec = sec->output_section;
|
| 13489 |
|
|
indx = elf_section_data (osec)->dynindx;
|
| 13490 |
|
|
|
| 13491 |
|
|
if (indx == 0)
|
| 13492 |
|
|
{
|
| 13493 |
|
|
if ((osec->flags & SEC_READONLY) == 0
|
| 13494 |
|
|
&& htab->elf.data_index_section != NULL)
|
| 13495 |
|
|
osec = htab->elf.data_index_section;
|
| 13496 |
|
|
else
|
| 13497 |
|
|
osec = htab->elf.text_index_section;
|
| 13498 |
|
|
indx = elf_section_data (osec)->dynindx;
|
| 13499 |
|
|
}
|
| 13500 |
|
|
BFD_ASSERT (indx != 0);
|
| 13501 |
|
|
|
| 13502 |
|
|
/* We are turning this relocation into one
|
| 13503 |
|
|
against a section symbol, so subtract out
|
| 13504 |
|
|
the output section's address but not the
|
| 13505 |
|
|
offset of the input section in the output
|
| 13506 |
|
|
section. */
|
| 13507 |
|
|
outrel.r_addend -= osec->vma;
|
| 13508 |
|
|
}
|
| 13509 |
|
|
|
| 13510 |
|
|
outrel.r_info = ELF64_R_INFO (indx, r_type);
|
| 13511 |
|
|
}
|
| 13512 |
|
|
}
|
| 13513 |
|
|
|
| 13514 |
|
|
sreloc = elf_section_data (input_section)->sreloc;
|
| 13515 |
|
|
if (!htab->elf.dynamic_sections_created)
|
| 13516 |
|
|
sreloc = htab->reliplt;
|
| 13517 |
|
|
if (sreloc == NULL)
|
| 13518 |
|
|
abort ();
|
| 13519 |
|
|
|
| 13520 |
|
|
if (sreloc->reloc_count * sizeof (Elf64_External_Rela)
|
| 13521 |
|
|
>= sreloc->size)
|
| 13522 |
|
|
abort ();
|
| 13523 |
|
|
loc = sreloc->contents;
|
| 13524 |
|
|
loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela);
|
| 13525 |
|
|
bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
|
| 13526 |
|
|
|
| 13527 |
|
|
/* If this reloc is against an external symbol, it will
|
| 13528 |
|
|
be computed at runtime, so there's no need to do
|
| 13529 |
|
|
anything now. However, for the sake of prelink ensure
|
| 13530 |
|
|
that the section contents are a known value. */
|
| 13531 |
|
|
if (! relocate)
|
| 13532 |
|
|
{
|
| 13533 |
|
|
unresolved_reloc = FALSE;
|
| 13534 |
|
|
/* The value chosen here is quite arbitrary as ld.so
|
| 13535 |
|
|
ignores section contents except for the special
|
| 13536 |
|
|
case of .opd where the contents might be accessed
|
| 13537 |
|
|
before relocation. Choose zero, as that won't
|
| 13538 |
|
|
cause reloc overflow. */
|
| 13539 |
|
|
relocation = 0;
|
| 13540 |
|
|
addend = 0;
|
| 13541 |
|
|
/* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
|
| 13542 |
|
|
to improve backward compatibility with older
|
| 13543 |
|
|
versions of ld. */
|
| 13544 |
|
|
if (r_type == R_PPC64_ADDR64)
|
| 13545 |
|
|
addend = outrel.r_addend;
|
| 13546 |
|
|
/* Adjust pc_relative relocs to have zero in *r_offset. */
|
| 13547 |
|
|
else if (ppc64_elf_howto_table[r_type]->pc_relative)
|
| 13548 |
|
|
addend = (input_section->output_section->vma
|
| 13549 |
|
|
+ input_section->output_offset
|
| 13550 |
|
|
+ rel->r_offset);
|
| 13551 |
|
|
}
|
| 13552 |
|
|
}
|
| 13553 |
|
|
break;
|
| 13554 |
|
|
|
| 13555 |
|
|
case R_PPC64_COPY:
|
| 13556 |
|
|
case R_PPC64_GLOB_DAT:
|
| 13557 |
|
|
case R_PPC64_JMP_SLOT:
|
| 13558 |
|
|
case R_PPC64_JMP_IREL:
|
| 13559 |
|
|
case R_PPC64_RELATIVE:
|
| 13560 |
|
|
/* We shouldn't ever see these dynamic relocs in relocatable
|
| 13561 |
|
|
files. */
|
| 13562 |
|
|
/* Fall through. */
|
| 13563 |
|
|
|
| 13564 |
|
|
case R_PPC64_PLTGOT16:
|
| 13565 |
|
|
case R_PPC64_PLTGOT16_DS:
|
| 13566 |
|
|
case R_PPC64_PLTGOT16_HA:
|
| 13567 |
|
|
case R_PPC64_PLTGOT16_HI:
|
| 13568 |
|
|
case R_PPC64_PLTGOT16_LO:
|
| 13569 |
|
|
case R_PPC64_PLTGOT16_LO_DS:
|
| 13570 |
|
|
case R_PPC64_PLTREL32:
|
| 13571 |
|
|
case R_PPC64_PLTREL64:
|
| 13572 |
|
|
/* These ones haven't been implemented yet. */
|
| 13573 |
|
|
|
| 13574 |
|
|
info->callbacks->einfo
|
| 13575 |
161 |
khays |
(_("%P: %B: relocation %s is not supported for symbol %s\n"),
|
| 13576 |
14 |
khays |
input_bfd,
|
| 13577 |
|
|
ppc64_elf_howto_table[r_type]->name, sym_name);
|
| 13578 |
|
|
|
| 13579 |
|
|
bfd_set_error (bfd_error_invalid_operation);
|
| 13580 |
|
|
ret = FALSE;
|
| 13581 |
|
|
continue;
|
| 13582 |
|
|
}
|
| 13583 |
|
|
|
| 13584 |
|
|
/* Multi-instruction sequences that access the TOC can be
|
| 13585 |
|
|
optimized, eg. addis ra,r2,0; addi rb,ra,x;
|
| 13586 |
|
|
to nop; addi rb,r2,x; */
|
| 13587 |
|
|
switch (r_type)
|
| 13588 |
|
|
{
|
| 13589 |
|
|
default:
|
| 13590 |
|
|
break;
|
| 13591 |
|
|
|
| 13592 |
|
|
case R_PPC64_GOT_TLSLD16_HI:
|
| 13593 |
|
|
case R_PPC64_GOT_TLSGD16_HI:
|
| 13594 |
|
|
case R_PPC64_GOT_TPREL16_HI:
|
| 13595 |
|
|
case R_PPC64_GOT_DTPREL16_HI:
|
| 13596 |
|
|
case R_PPC64_GOT16_HI:
|
| 13597 |
|
|
case R_PPC64_TOC16_HI:
|
| 13598 |
|
|
/* These relocs would only be useful if building up an
|
| 13599 |
|
|
offset to later add to r2, perhaps in an indexed
|
| 13600 |
|
|
addressing mode instruction. Don't try to optimize.
|
| 13601 |
|
|
Unfortunately, the possibility of someone building up an
|
| 13602 |
|
|
offset like this or even with the HA relocs, means that
|
| 13603 |
|
|
we need to check the high insn when optimizing the low
|
| 13604 |
|
|
insn. */
|
| 13605 |
|
|
break;
|
| 13606 |
|
|
|
| 13607 |
|
|
case R_PPC64_GOT_TLSLD16_HA:
|
| 13608 |
|
|
case R_PPC64_GOT_TLSGD16_HA:
|
| 13609 |
|
|
case R_PPC64_GOT_TPREL16_HA:
|
| 13610 |
|
|
case R_PPC64_GOT_DTPREL16_HA:
|
| 13611 |
|
|
case R_PPC64_GOT16_HA:
|
| 13612 |
|
|
case R_PPC64_TOC16_HA:
|
| 13613 |
163 |
khays |
if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
|
| 13614 |
|
|
&& !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
|
| 13615 |
|
|
{
|
| 13616 |
|
|
bfd_byte *p = contents + (rel->r_offset & ~3);
|
| 13617 |
|
|
bfd_put_32 (input_bfd, NOP, p);
|
| 13618 |
|
|
}
|
| 13619 |
14 |
khays |
break;
|
| 13620 |
|
|
|
| 13621 |
|
|
case R_PPC64_GOT_TLSLD16_LO:
|
| 13622 |
|
|
case R_PPC64_GOT_TLSGD16_LO:
|
| 13623 |
|
|
case R_PPC64_GOT_TPREL16_LO_DS:
|
| 13624 |
|
|
case R_PPC64_GOT_DTPREL16_LO_DS:
|
| 13625 |
|
|
case R_PPC64_GOT16_LO:
|
| 13626 |
|
|
case R_PPC64_GOT16_LO_DS:
|
| 13627 |
|
|
case R_PPC64_TOC16_LO:
|
| 13628 |
|
|
case R_PPC64_TOC16_LO_DS:
|
| 13629 |
163 |
khays |
if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000
|
| 13630 |
|
|
&& !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn)
|
| 13631 |
14 |
khays |
{
|
| 13632 |
|
|
bfd_byte *p = contents + (rel->r_offset & ~3);
|
| 13633 |
|
|
insn = bfd_get_32 (input_bfd, p);
|
| 13634 |
163 |
khays |
if ((insn & (0x3f << 26)) == 12u << 26 /* addic */)
|
| 13635 |
14 |
khays |
{
|
| 13636 |
163 |
khays |
/* Transform addic to addi when we change reg. */
|
| 13637 |
|
|
insn &= ~((0x3f << 26) | (0x1f << 16));
|
| 13638 |
|
|
insn |= (14u << 26) | (2 << 16);
|
| 13639 |
14 |
khays |
}
|
| 13640 |
163 |
khays |
else
|
| 13641 |
|
|
{
|
| 13642 |
|
|
insn &= ~(0x1f << 16);
|
| 13643 |
|
|
insn |= 2 << 16;
|
| 13644 |
|
|
}
|
| 13645 |
|
|
bfd_put_32 (input_bfd, insn, p);
|
| 13646 |
14 |
khays |
}
|
| 13647 |
|
|
break;
|
| 13648 |
|
|
}
|
| 13649 |
|
|
|
| 13650 |
|
|
/* Do any further special processing. */
|
| 13651 |
|
|
switch (r_type)
|
| 13652 |
|
|
{
|
| 13653 |
|
|
default:
|
| 13654 |
|
|
break;
|
| 13655 |
|
|
|
| 13656 |
|
|
case R_PPC64_ADDR16_HA:
|
| 13657 |
|
|
case R_PPC64_REL16_HA:
|
| 13658 |
|
|
case R_PPC64_ADDR16_HIGHERA:
|
| 13659 |
|
|
case R_PPC64_ADDR16_HIGHESTA:
|
| 13660 |
|
|
case R_PPC64_TOC16_HA:
|
| 13661 |
|
|
case R_PPC64_SECTOFF_HA:
|
| 13662 |
|
|
case R_PPC64_TPREL16_HA:
|
| 13663 |
|
|
case R_PPC64_DTPREL16_HA:
|
| 13664 |
|
|
case R_PPC64_TPREL16_HIGHER:
|
| 13665 |
|
|
case R_PPC64_TPREL16_HIGHERA:
|
| 13666 |
|
|
case R_PPC64_TPREL16_HIGHEST:
|
| 13667 |
|
|
case R_PPC64_TPREL16_HIGHESTA:
|
| 13668 |
|
|
case R_PPC64_DTPREL16_HIGHER:
|
| 13669 |
|
|
case R_PPC64_DTPREL16_HIGHERA:
|
| 13670 |
|
|
case R_PPC64_DTPREL16_HIGHEST:
|
| 13671 |
|
|
case R_PPC64_DTPREL16_HIGHESTA:
|
| 13672 |
|
|
/* It's just possible that this symbol is a weak symbol
|
| 13673 |
|
|
that's not actually defined anywhere. In that case,
|
| 13674 |
|
|
'sec' would be NULL, and we should leave the symbol
|
| 13675 |
|
|
alone (it will be set to zero elsewhere in the link). */
|
| 13676 |
|
|
if (sec == NULL)
|
| 13677 |
|
|
break;
|
| 13678 |
|
|
/* Fall thru */
|
| 13679 |
|
|
|
| 13680 |
|
|
case R_PPC64_GOT16_HA:
|
| 13681 |
|
|
case R_PPC64_PLTGOT16_HA:
|
| 13682 |
|
|
case R_PPC64_PLT16_HA:
|
| 13683 |
|
|
case R_PPC64_GOT_TLSGD16_HA:
|
| 13684 |
|
|
case R_PPC64_GOT_TLSLD16_HA:
|
| 13685 |
|
|
case R_PPC64_GOT_TPREL16_HA:
|
| 13686 |
|
|
case R_PPC64_GOT_DTPREL16_HA:
|
| 13687 |
|
|
/* Add 0x10000 if sign bit in 0:15 is set.
|
| 13688 |
|
|
Bits 0:15 are not used. */
|
| 13689 |
|
|
addend += 0x8000;
|
| 13690 |
|
|
break;
|
| 13691 |
|
|
|
| 13692 |
|
|
case R_PPC64_ADDR16_DS:
|
| 13693 |
|
|
case R_PPC64_ADDR16_LO_DS:
|
| 13694 |
|
|
case R_PPC64_GOT16_DS:
|
| 13695 |
|
|
case R_PPC64_GOT16_LO_DS:
|
| 13696 |
|
|
case R_PPC64_PLT16_LO_DS:
|
| 13697 |
|
|
case R_PPC64_SECTOFF_DS:
|
| 13698 |
|
|
case R_PPC64_SECTOFF_LO_DS:
|
| 13699 |
|
|
case R_PPC64_TOC16_DS:
|
| 13700 |
|
|
case R_PPC64_TOC16_LO_DS:
|
| 13701 |
|
|
case R_PPC64_PLTGOT16_DS:
|
| 13702 |
|
|
case R_PPC64_PLTGOT16_LO_DS:
|
| 13703 |
|
|
case R_PPC64_GOT_TPREL16_DS:
|
| 13704 |
|
|
case R_PPC64_GOT_TPREL16_LO_DS:
|
| 13705 |
|
|
case R_PPC64_GOT_DTPREL16_DS:
|
| 13706 |
|
|
case R_PPC64_GOT_DTPREL16_LO_DS:
|
| 13707 |
|
|
case R_PPC64_TPREL16_DS:
|
| 13708 |
|
|
case R_PPC64_TPREL16_LO_DS:
|
| 13709 |
|
|
case R_PPC64_DTPREL16_DS:
|
| 13710 |
|
|
case R_PPC64_DTPREL16_LO_DS:
|
| 13711 |
|
|
insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3));
|
| 13712 |
|
|
mask = 3;
|
| 13713 |
|
|
/* If this reloc is against an lq insn, then the value must be
|
| 13714 |
|
|
a multiple of 16. This is somewhat of a hack, but the
|
| 13715 |
|
|
"correct" way to do this by defining _DQ forms of all the
|
| 13716 |
|
|
_DS relocs bloats all reloc switches in this file. It
|
| 13717 |
|
|
doesn't seem to make much sense to use any of these relocs
|
| 13718 |
|
|
in data, so testing the insn should be safe. */
|
| 13719 |
|
|
if ((insn & (0x3f << 26)) == (56u << 26))
|
| 13720 |
|
|
mask = 15;
|
| 13721 |
|
|
if (((relocation + addend) & mask) != 0)
|
| 13722 |
|
|
{
|
| 13723 |
|
|
info->callbacks->einfo
|
| 13724 |
161 |
khays |
(_("%P: %H: error: %s not a multiple of %u\n"),
|
| 13725 |
14 |
khays |
input_bfd, input_section, rel->r_offset,
|
| 13726 |
|
|
ppc64_elf_howto_table[r_type]->name,
|
| 13727 |
|
|
mask + 1);
|
| 13728 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 13729 |
|
|
ret = FALSE;
|
| 13730 |
|
|
continue;
|
| 13731 |
|
|
}
|
| 13732 |
|
|
break;
|
| 13733 |
|
|
}
|
| 13734 |
|
|
|
| 13735 |
|
|
/* Dynamic relocs are not propagated for SEC_DEBUGGING sections
|
| 13736 |
|
|
because such sections are not SEC_ALLOC and thus ld.so will
|
| 13737 |
|
|
not process them. */
|
| 13738 |
|
|
if (unresolved_reloc
|
| 13739 |
|
|
&& !((input_section->flags & SEC_DEBUGGING) != 0
|
| 13740 |
163 |
khays |
&& h->elf.def_dynamic)
|
| 13741 |
|
|
&& _bfd_elf_section_offset (output_bfd, info, input_section,
|
| 13742 |
|
|
rel->r_offset) != (bfd_vma) -1)
|
| 13743 |
14 |
khays |
{
|
| 13744 |
|
|
info->callbacks->einfo
|
| 13745 |
161 |
khays |
(_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
|
| 13746 |
14 |
khays |
input_bfd, input_section, rel->r_offset,
|
| 13747 |
|
|
ppc64_elf_howto_table[(int) r_type]->name,
|
| 13748 |
|
|
h->elf.root.root.string);
|
| 13749 |
|
|
ret = FALSE;
|
| 13750 |
|
|
}
|
| 13751 |
|
|
|
| 13752 |
|
|
r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
|
| 13753 |
|
|
input_bfd,
|
| 13754 |
|
|
input_section,
|
| 13755 |
|
|
contents,
|
| 13756 |
|
|
rel->r_offset,
|
| 13757 |
|
|
relocation,
|
| 13758 |
|
|
addend);
|
| 13759 |
|
|
|
| 13760 |
|
|
if (r != bfd_reloc_ok)
|
| 13761 |
|
|
{
|
| 13762 |
|
|
if (sym_name == NULL)
|
| 13763 |
|
|
sym_name = "(null)";
|
| 13764 |
|
|
if (r == bfd_reloc_overflow)
|
| 13765 |
|
|
{
|
| 13766 |
|
|
if (warned)
|
| 13767 |
|
|
continue;
|
| 13768 |
|
|
if (h != NULL
|
| 13769 |
|
|
&& h->elf.root.type == bfd_link_hash_undefweak
|
| 13770 |
|
|
&& ppc64_elf_howto_table[r_type]->pc_relative)
|
| 13771 |
|
|
{
|
| 13772 |
|
|
/* Assume this is a call protected by other code that
|
| 13773 |
|
|
detects the symbol is undefined. If this is the case,
|
| 13774 |
|
|
we can safely ignore the overflow. If not, the
|
| 13775 |
|
|
program is hosed anyway, and a little warning isn't
|
| 13776 |
|
|
going to help. */
|
| 13777 |
|
|
|
| 13778 |
|
|
continue;
|
| 13779 |
|
|
}
|
| 13780 |
|
|
|
| 13781 |
|
|
if (!((*info->callbacks->reloc_overflow)
|
| 13782 |
|
|
(info, (h ? &h->elf.root : NULL), sym_name,
|
| 13783 |
|
|
ppc64_elf_howto_table[r_type]->name,
|
| 13784 |
|
|
orig_addend, input_bfd, input_section, rel->r_offset)))
|
| 13785 |
|
|
return FALSE;
|
| 13786 |
|
|
}
|
| 13787 |
|
|
else
|
| 13788 |
|
|
{
|
| 13789 |
|
|
info->callbacks->einfo
|
| 13790 |
161 |
khays |
(_("%P: %H: %s reloc against `%s': error %d\n"),
|
| 13791 |
14 |
khays |
input_bfd, input_section, rel->r_offset,
|
| 13792 |
|
|
ppc64_elf_howto_table[r_type]->name,
|
| 13793 |
|
|
sym_name,
|
| 13794 |
|
|
(int) r);
|
| 13795 |
|
|
ret = FALSE;
|
| 13796 |
|
|
}
|
| 13797 |
|
|
}
|
| 13798 |
|
|
}
|
| 13799 |
|
|
|
| 13800 |
|
|
/* If we're emitting relocations, then shortly after this function
|
| 13801 |
|
|
returns, reloc offsets and addends for this section will be
|
| 13802 |
|
|
adjusted. Worse, reloc symbol indices will be for the output
|
| 13803 |
|
|
file rather than the input. Save a copy of the relocs for
|
| 13804 |
|
|
opd_entry_value. */
|
| 13805 |
|
|
if (is_opd && (info->emitrelocations || info->relocatable))
|
| 13806 |
|
|
{
|
| 13807 |
|
|
bfd_size_type amt;
|
| 13808 |
|
|
amt = input_section->reloc_count * sizeof (Elf_Internal_Rela);
|
| 13809 |
|
|
rel = bfd_alloc (input_bfd, amt);
|
| 13810 |
|
|
BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL);
|
| 13811 |
|
|
ppc64_elf_tdata (input_bfd)->opd_relocs = rel;
|
| 13812 |
|
|
if (rel == NULL)
|
| 13813 |
|
|
return FALSE;
|
| 13814 |
|
|
memcpy (rel, relocs, amt);
|
| 13815 |
|
|
}
|
| 13816 |
|
|
return ret;
|
| 13817 |
|
|
}
|
| 13818 |
|
|
|
| 13819 |
|
|
/* Adjust the value of any local symbols in opd sections. */
|
| 13820 |
|
|
|
| 13821 |
|
|
static int
|
| 13822 |
|
|
ppc64_elf_output_symbol_hook (struct bfd_link_info *info,
|
| 13823 |
|
|
const char *name ATTRIBUTE_UNUSED,
|
| 13824 |
|
|
Elf_Internal_Sym *elfsym,
|
| 13825 |
|
|
asection *input_sec,
|
| 13826 |
|
|
struct elf_link_hash_entry *h)
|
| 13827 |
|
|
{
|
| 13828 |
|
|
struct _opd_sec_data *opd;
|
| 13829 |
|
|
long adjust;
|
| 13830 |
|
|
bfd_vma value;
|
| 13831 |
|
|
|
| 13832 |
|
|
if (h != NULL)
|
| 13833 |
|
|
return 1;
|
| 13834 |
|
|
|
| 13835 |
|
|
opd = get_opd_info (input_sec);
|
| 13836 |
|
|
if (opd == NULL || opd->adjust == NULL)
|
| 13837 |
|
|
return 1;
|
| 13838 |
|
|
|
| 13839 |
|
|
value = elfsym->st_value - input_sec->output_offset;
|
| 13840 |
|
|
if (!info->relocatable)
|
| 13841 |
|
|
value -= input_sec->output_section->vma;
|
| 13842 |
|
|
|
| 13843 |
|
|
adjust = opd->adjust[value / 8];
|
| 13844 |
|
|
if (adjust == -1)
|
| 13845 |
|
|
return 2;
|
| 13846 |
|
|
|
| 13847 |
|
|
elfsym->st_value += adjust;
|
| 13848 |
|
|
return 1;
|
| 13849 |
|
|
}
|
| 13850 |
|
|
|
| 13851 |
|
|
/* Finish up dynamic symbol handling. We set the contents of various
|
| 13852 |
|
|
dynamic sections here. */
|
| 13853 |
|
|
|
| 13854 |
|
|
static bfd_boolean
|
| 13855 |
|
|
ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
|
| 13856 |
|
|
struct bfd_link_info *info,
|
| 13857 |
|
|
struct elf_link_hash_entry *h,
|
| 13858 |
|
|
Elf_Internal_Sym *sym)
|
| 13859 |
|
|
{
|
| 13860 |
|
|
struct ppc_link_hash_table *htab;
|
| 13861 |
|
|
struct plt_entry *ent;
|
| 13862 |
|
|
Elf_Internal_Rela rela;
|
| 13863 |
|
|
bfd_byte *loc;
|
| 13864 |
|
|
|
| 13865 |
|
|
htab = ppc_hash_table (info);
|
| 13866 |
|
|
if (htab == NULL)
|
| 13867 |
|
|
return FALSE;
|
| 13868 |
|
|
|
| 13869 |
|
|
for (ent = h->plt.plist; ent != NULL; ent = ent->next)
|
| 13870 |
|
|
if (ent->plt.offset != (bfd_vma) -1)
|
| 13871 |
|
|
{
|
| 13872 |
|
|
/* This symbol has an entry in the procedure linkage
|
| 13873 |
|
|
table. Set it up. */
|
| 13874 |
|
|
if (!htab->elf.dynamic_sections_created
|
| 13875 |
|
|
|| h->dynindx == -1)
|
| 13876 |
|
|
{
|
| 13877 |
|
|
BFD_ASSERT (h->type == STT_GNU_IFUNC
|
| 13878 |
|
|
&& h->def_regular
|
| 13879 |
|
|
&& (h->root.type == bfd_link_hash_defined
|
| 13880 |
|
|
|| h->root.type == bfd_link_hash_defweak));
|
| 13881 |
|
|
rela.r_offset = (htab->iplt->output_section->vma
|
| 13882 |
|
|
+ htab->iplt->output_offset
|
| 13883 |
|
|
+ ent->plt.offset);
|
| 13884 |
|
|
rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
|
| 13885 |
|
|
rela.r_addend = (h->root.u.def.value
|
| 13886 |
|
|
+ h->root.u.def.section->output_offset
|
| 13887 |
|
|
+ h->root.u.def.section->output_section->vma
|
| 13888 |
|
|
+ ent->addend);
|
| 13889 |
|
|
loc = (htab->reliplt->contents
|
| 13890 |
|
|
+ (htab->reliplt->reloc_count++
|
| 13891 |
|
|
* sizeof (Elf64_External_Rela)));
|
| 13892 |
|
|
}
|
| 13893 |
|
|
else
|
| 13894 |
|
|
{
|
| 13895 |
|
|
rela.r_offset = (htab->plt->output_section->vma
|
| 13896 |
|
|
+ htab->plt->output_offset
|
| 13897 |
|
|
+ ent->plt.offset);
|
| 13898 |
|
|
rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
|
| 13899 |
|
|
rela.r_addend = ent->addend;
|
| 13900 |
|
|
loc = (htab->relplt->contents
|
| 13901 |
|
|
+ ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE)
|
| 13902 |
|
|
/ (PLT_ENTRY_SIZE / sizeof (Elf64_External_Rela))));
|
| 13903 |
|
|
}
|
| 13904 |
|
|
bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
|
| 13905 |
|
|
}
|
| 13906 |
|
|
|
| 13907 |
|
|
if (h->needs_copy)
|
| 13908 |
|
|
{
|
| 13909 |
|
|
/* This symbol needs a copy reloc. Set it up. */
|
| 13910 |
|
|
|
| 13911 |
|
|
if (h->dynindx == -1
|
| 13912 |
|
|
|| (h->root.type != bfd_link_hash_defined
|
| 13913 |
|
|
&& h->root.type != bfd_link_hash_defweak)
|
| 13914 |
|
|
|| htab->relbss == NULL)
|
| 13915 |
|
|
abort ();
|
| 13916 |
|
|
|
| 13917 |
|
|
rela.r_offset = (h->root.u.def.value
|
| 13918 |
|
|
+ h->root.u.def.section->output_section->vma
|
| 13919 |
|
|
+ h->root.u.def.section->output_offset);
|
| 13920 |
|
|
rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
|
| 13921 |
|
|
rela.r_addend = 0;
|
| 13922 |
|
|
loc = htab->relbss->contents;
|
| 13923 |
|
|
loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela);
|
| 13924 |
|
|
bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
|
| 13925 |
|
|
}
|
| 13926 |
|
|
|
| 13927 |
|
|
/* Mark some specially defined symbols as absolute. */
|
| 13928 |
|
|
if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
|
| 13929 |
|
|
sym->st_shndx = SHN_ABS;
|
| 13930 |
|
|
|
| 13931 |
|
|
return TRUE;
|
| 13932 |
|
|
}
|
| 13933 |
|
|
|
| 13934 |
|
|
/* Used to decide how to sort relocs in an optimal manner for the
|
| 13935 |
|
|
dynamic linker, before writing them out. */
|
| 13936 |
|
|
|
| 13937 |
|
|
static enum elf_reloc_type_class
|
| 13938 |
|
|
ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela)
|
| 13939 |
|
|
{
|
| 13940 |
|
|
enum elf_ppc64_reloc_type r_type;
|
| 13941 |
|
|
|
| 13942 |
|
|
r_type = ELF64_R_TYPE (rela->r_info);
|
| 13943 |
|
|
switch (r_type)
|
| 13944 |
|
|
{
|
| 13945 |
|
|
case R_PPC64_RELATIVE:
|
| 13946 |
|
|
return reloc_class_relative;
|
| 13947 |
|
|
case R_PPC64_JMP_SLOT:
|
| 13948 |
|
|
return reloc_class_plt;
|
| 13949 |
|
|
case R_PPC64_COPY:
|
| 13950 |
|
|
return reloc_class_copy;
|
| 13951 |
|
|
default:
|
| 13952 |
|
|
return reloc_class_normal;
|
| 13953 |
|
|
}
|
| 13954 |
|
|
}
|
| 13955 |
|
|
|
| 13956 |
|
|
/* Finish up the dynamic sections. */
|
| 13957 |
|
|
|
| 13958 |
|
|
static bfd_boolean
|
| 13959 |
|
|
ppc64_elf_finish_dynamic_sections (bfd *output_bfd,
|
| 13960 |
|
|
struct bfd_link_info *info)
|
| 13961 |
|
|
{
|
| 13962 |
|
|
struct ppc_link_hash_table *htab;
|
| 13963 |
|
|
bfd *dynobj;
|
| 13964 |
|
|
asection *sdyn;
|
| 13965 |
|
|
|
| 13966 |
|
|
htab = ppc_hash_table (info);
|
| 13967 |
|
|
if (htab == NULL)
|
| 13968 |
|
|
return FALSE;
|
| 13969 |
|
|
|
| 13970 |
|
|
dynobj = htab->elf.dynobj;
|
| 13971 |
|
|
sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
|
| 13972 |
|
|
|
| 13973 |
|
|
if (htab->elf.dynamic_sections_created)
|
| 13974 |
|
|
{
|
| 13975 |
|
|
Elf64_External_Dyn *dyncon, *dynconend;
|
| 13976 |
|
|
|
| 13977 |
|
|
if (sdyn == NULL || htab->got == NULL)
|
| 13978 |
|
|
abort ();
|
| 13979 |
|
|
|
| 13980 |
|
|
dyncon = (Elf64_External_Dyn *) sdyn->contents;
|
| 13981 |
|
|
dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size);
|
| 13982 |
|
|
for (; dyncon < dynconend; dyncon++)
|
| 13983 |
|
|
{
|
| 13984 |
|
|
Elf_Internal_Dyn dyn;
|
| 13985 |
|
|
asection *s;
|
| 13986 |
|
|
|
| 13987 |
|
|
bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
|
| 13988 |
|
|
|
| 13989 |
|
|
switch (dyn.d_tag)
|
| 13990 |
|
|
{
|
| 13991 |
|
|
default:
|
| 13992 |
|
|
continue;
|
| 13993 |
|
|
|
| 13994 |
|
|
case DT_PPC64_GLINK:
|
| 13995 |
|
|
s = htab->glink;
|
| 13996 |
|
|
dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
|
| 13997 |
|
|
/* We stupidly defined DT_PPC64_GLINK to be the start
|
| 13998 |
|
|
of glink rather than the first entry point, which is
|
| 13999 |
|
|
what ld.so needs, and now have a bigger stub to
|
| 14000 |
|
|
support automatic multiple TOCs. */
|
| 14001 |
|
|
dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32;
|
| 14002 |
|
|
break;
|
| 14003 |
|
|
|
| 14004 |
|
|
case DT_PPC64_OPD:
|
| 14005 |
|
|
s = bfd_get_section_by_name (output_bfd, ".opd");
|
| 14006 |
|
|
if (s == NULL)
|
| 14007 |
|
|
continue;
|
| 14008 |
|
|
dyn.d_un.d_ptr = s->vma;
|
| 14009 |
|
|
break;
|
| 14010 |
|
|
|
| 14011 |
|
|
case DT_PPC64_OPDSZ:
|
| 14012 |
|
|
s = bfd_get_section_by_name (output_bfd, ".opd");
|
| 14013 |
|
|
if (s == NULL)
|
| 14014 |
|
|
continue;
|
| 14015 |
|
|
dyn.d_un.d_val = s->size;
|
| 14016 |
|
|
break;
|
| 14017 |
|
|
|
| 14018 |
|
|
case DT_PLTGOT:
|
| 14019 |
|
|
s = htab->plt;
|
| 14020 |
|
|
dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
|
| 14021 |
|
|
break;
|
| 14022 |
|
|
|
| 14023 |
|
|
case DT_JMPREL:
|
| 14024 |
|
|
s = htab->relplt;
|
| 14025 |
|
|
dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
|
| 14026 |
|
|
break;
|
| 14027 |
|
|
|
| 14028 |
|
|
case DT_PLTRELSZ:
|
| 14029 |
|
|
dyn.d_un.d_val = htab->relplt->size;
|
| 14030 |
|
|
break;
|
| 14031 |
|
|
|
| 14032 |
|
|
case DT_RELASZ:
|
| 14033 |
|
|
/* Don't count procedure linkage table relocs in the
|
| 14034 |
|
|
overall reloc count. */
|
| 14035 |
|
|
s = htab->relplt;
|
| 14036 |
|
|
if (s == NULL)
|
| 14037 |
|
|
continue;
|
| 14038 |
|
|
dyn.d_un.d_val -= s->size;
|
| 14039 |
|
|
break;
|
| 14040 |
|
|
|
| 14041 |
|
|
case DT_RELA:
|
| 14042 |
|
|
/* We may not be using the standard ELF linker script.
|
| 14043 |
|
|
If .rela.plt is the first .rela section, we adjust
|
| 14044 |
|
|
DT_RELA to not include it. */
|
| 14045 |
|
|
s = htab->relplt;
|
| 14046 |
|
|
if (s == NULL)
|
| 14047 |
|
|
continue;
|
| 14048 |
|
|
if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
|
| 14049 |
|
|
continue;
|
| 14050 |
|
|
dyn.d_un.d_ptr += s->size;
|
| 14051 |
|
|
break;
|
| 14052 |
|
|
}
|
| 14053 |
|
|
|
| 14054 |
|
|
bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
|
| 14055 |
|
|
}
|
| 14056 |
|
|
}
|
| 14057 |
|
|
|
| 14058 |
|
|
if (htab->got != NULL && htab->got->size != 0)
|
| 14059 |
|
|
{
|
| 14060 |
|
|
/* Fill in the first entry in the global offset table.
|
| 14061 |
|
|
We use it to hold the link-time TOCbase. */
|
| 14062 |
|
|
bfd_put_64 (output_bfd,
|
| 14063 |
|
|
elf_gp (output_bfd) + TOC_BASE_OFF,
|
| 14064 |
|
|
htab->got->contents);
|
| 14065 |
|
|
|
| 14066 |
|
|
/* Set .got entry size. */
|
| 14067 |
|
|
elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8;
|
| 14068 |
|
|
}
|
| 14069 |
|
|
|
| 14070 |
|
|
if (htab->plt != NULL && htab->plt->size != 0)
|
| 14071 |
|
|
{
|
| 14072 |
|
|
/* Set .plt entry size. */
|
| 14073 |
|
|
elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize
|
| 14074 |
|
|
= PLT_ENTRY_SIZE;
|
| 14075 |
|
|
}
|
| 14076 |
|
|
|
| 14077 |
|
|
/* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
|
| 14078 |
|
|
brlt ourselves if emitrelocations. */
|
| 14079 |
|
|
if (htab->brlt != NULL
|
| 14080 |
|
|
&& htab->brlt->reloc_count != 0
|
| 14081 |
|
|
&& !_bfd_elf_link_output_relocs (output_bfd,
|
| 14082 |
|
|
htab->brlt,
|
| 14083 |
|
|
elf_section_data (htab->brlt)->rela.hdr,
|
| 14084 |
|
|
elf_section_data (htab->brlt)->relocs,
|
| 14085 |
|
|
NULL))
|
| 14086 |
|
|
return FALSE;
|
| 14087 |
|
|
|
| 14088 |
|
|
if (htab->glink != NULL
|
| 14089 |
|
|
&& htab->glink->reloc_count != 0
|
| 14090 |
|
|
&& !_bfd_elf_link_output_relocs (output_bfd,
|
| 14091 |
|
|
htab->glink,
|
| 14092 |
|
|
elf_section_data (htab->glink)->rela.hdr,
|
| 14093 |
|
|
elf_section_data (htab->glink)->relocs,
|
| 14094 |
|
|
NULL))
|
| 14095 |
|
|
return FALSE;
|
| 14096 |
|
|
|
| 14097 |
161 |
khays |
|
| 14098 |
|
|
if (htab->glink_eh_frame != NULL
|
| 14099 |
|
|
&& htab->glink_eh_frame->sec_info_type == ELF_INFO_TYPE_EH_FRAME
|
| 14100 |
|
|
&& !_bfd_elf_write_section_eh_frame (output_bfd, info,
|
| 14101 |
|
|
htab->glink_eh_frame,
|
| 14102 |
|
|
htab->glink_eh_frame->contents))
|
| 14103 |
|
|
return FALSE;
|
| 14104 |
|
|
|
| 14105 |
14 |
khays |
/* We need to handle writing out multiple GOT sections ourselves,
|
| 14106 |
|
|
since we didn't add them to DYNOBJ. We know dynobj is the first
|
| 14107 |
|
|
bfd. */
|
| 14108 |
|
|
while ((dynobj = dynobj->link_next) != NULL)
|
| 14109 |
|
|
{
|
| 14110 |
|
|
asection *s;
|
| 14111 |
|
|
|
| 14112 |
|
|
if (!is_ppc64_elf (dynobj))
|
| 14113 |
|
|
continue;
|
| 14114 |
|
|
|
| 14115 |
|
|
s = ppc64_elf_tdata (dynobj)->got;
|
| 14116 |
|
|
if (s != NULL
|
| 14117 |
|
|
&& s->size != 0
|
| 14118 |
|
|
&& s->output_section != bfd_abs_section_ptr
|
| 14119 |
|
|
&& !bfd_set_section_contents (output_bfd, s->output_section,
|
| 14120 |
|
|
s->contents, s->output_offset,
|
| 14121 |
|
|
s->size))
|
| 14122 |
|
|
return FALSE;
|
| 14123 |
|
|
s = ppc64_elf_tdata (dynobj)->relgot;
|
| 14124 |
|
|
if (s != NULL
|
| 14125 |
|
|
&& s->size != 0
|
| 14126 |
|
|
&& s->output_section != bfd_abs_section_ptr
|
| 14127 |
|
|
&& !bfd_set_section_contents (output_bfd, s->output_section,
|
| 14128 |
|
|
s->contents, s->output_offset,
|
| 14129 |
|
|
s->size))
|
| 14130 |
|
|
return FALSE;
|
| 14131 |
|
|
}
|
| 14132 |
|
|
|
| 14133 |
|
|
return TRUE;
|
| 14134 |
|
|
}
|
| 14135 |
|
|
|
| 14136 |
|
|
#include "elf64-target.h"
|
| 14137 |
166 |
khays |
|
| 14138 |
|
|
/* FreeBSD support */
|
| 14139 |
|
|
|
| 14140 |
|
|
#undef TARGET_LITTLE_SYM
|
| 14141 |
|
|
#undef TARGET_LITTLE_NAME
|
| 14142 |
|
|
|
| 14143 |
|
|
#undef TARGET_BIG_SYM
|
| 14144 |
|
|
#define TARGET_BIG_SYM bfd_elf64_powerpc_freebsd_vec
|
| 14145 |
|
|
#undef TARGET_BIG_NAME
|
| 14146 |
|
|
#define TARGET_BIG_NAME "elf64-powerpc-freebsd"
|
| 14147 |
|
|
|
| 14148 |
|
|
#undef ELF_OSABI
|
| 14149 |
|
|
#define ELF_OSABI ELFOSABI_FREEBSD
|
| 14150 |
|
|
|
| 14151 |
|
|
#undef elf64_bed
|
| 14152 |
|
|
#define elf64_bed elf64_powerpc_fbsd_bed
|
| 14153 |
|
|
|
| 14154 |
|
|
#include "elf64-target.h"
|
| 14155 |
|
|
|
