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/* PowerPC-specific support for 32-bit ELF
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Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
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2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
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14 |
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Free Software Foundation, Inc.
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Written by Ian Lance Taylor, Cygnus Support.
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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
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along with this program; if not, write to the
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Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
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Boston, MA 02110-1301, USA. */
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/* This file is based on a preliminary PowerPC ELF ABI. The
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information may not match the final PowerPC ELF ABI. It includes
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suggestions from the in-progress Embedded PowerPC ABI, and that
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information may also not match. */
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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/ppc.h"
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#include "elf32-ppc.h"
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#include "elf-vxworks.h"
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#include "dwarf2.h"
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14 |
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/* RELA relocations are used here. */
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static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
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(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
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static bfd_reloc_status_type ppc_elf_unhandled_reloc
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(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
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/* Branch prediction bit for branch taken relocs. */
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#define BRANCH_PREDICT_BIT 0x200000
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/* Mask to set RA in memory instructions. */
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#define RA_REGISTER_MASK 0x001f0000
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/* Value to shift register by to insert RA. */
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#define RA_REGISTER_SHIFT 16
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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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/* For old-style PLT. */
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/* The number of single-slot PLT entries (the rest use two slots). */
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#define PLT_NUM_SINGLE_ENTRIES 8192
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/* For new-style .glink and .plt. */
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#define GLINK_PLTRESOLVE 16*4
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#define GLINK_ENTRY_SIZE 4*4
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#define TLS_GET_ADDR_GLINK_SIZE 12*4
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/* VxWorks uses its own plt layout, filled in by the static linker. */
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/* The standard VxWorks PLT entry. */
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#define VXWORKS_PLT_ENTRY_SIZE 32
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static const bfd_vma ppc_elf_vxworks_plt_entry
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[VXWORKS_PLT_ENTRY_SIZE / 4] =
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{
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0x3d800000, /* lis r12,0 */
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0x818c0000, /* lwz r12,0(r12) */
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0x7d8903a6, /* mtctr r12 */
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0x4e800420, /* bctr */
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0x39600000, /* li r11,0 */
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0x48000000, /* b 14 <.PLT0resolve+0x4> */
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0x60000000, /* nop */
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0x60000000, /* nop */
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};
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static const bfd_vma ppc_elf_vxworks_pic_plt_entry
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[VXWORKS_PLT_ENTRY_SIZE / 4] =
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{
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0x3d9e0000, /* addis r12,r30,0 */
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0x818c0000, /* lwz r12,0(r12) */
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0x7d8903a6, /* mtctr r12 */
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0x4e800420, /* bctr */
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0x39600000, /* li r11,0 */
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0x48000000, /* b 14 <.PLT0resolve+0x4> 14: R_PPC_REL24 .PLTresolve */
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0x60000000, /* nop */
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0x60000000, /* nop */
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};
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/* The initial VxWorks PLT entry. */
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#define VXWORKS_PLT_INITIAL_ENTRY_SIZE 32
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static const bfd_vma ppc_elf_vxworks_plt0_entry
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[VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
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{
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0x3d800000, /* lis r12,0 */
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0x398c0000, /* addi r12,r12,0 */
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0x800c0008, /* lwz r0,8(r12) */
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0x7c0903a6, /* mtctr r0 */
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0x818c0004, /* lwz r12,4(r12) */
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0x4e800420, /* bctr */
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0x60000000, /* nop */
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0x60000000, /* nop */
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};
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static const bfd_vma ppc_elf_vxworks_pic_plt0_entry
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[VXWORKS_PLT_INITIAL_ENTRY_SIZE / 4] =
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{
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0x819e0008, /* lwz r12,8(r30) */
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0x7d8903a6, /* mtctr r12 */
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0x819e0004, /* lwz r12,4(r30) */
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0x4e800420, /* bctr */
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0x60000000, /* nop */
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0x60000000, /* nop */
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0x60000000, /* nop */
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0x60000000, /* nop */
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};
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/* For executables, we have some additional relocations in
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.rela.plt.unloaded, for the kernel loader. */
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/* The number of non-JMP_SLOT relocations per PLT0 slot. */
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#define VXWORKS_PLT_NON_JMP_SLOT_RELOCS 3
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/* The number of relocations in the PLTResolve slot. */
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#define VXWORKS_PLTRESOLVE_RELOCS 2
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/* The number of relocations in the PLTResolve slot when when creating
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a shared library. */
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#define VXWORKS_PLTRESOLVE_RELOCS_SHLIB 0
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/* Some instructions. */
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#define ADDIS_11_11 0x3d6b0000
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#define ADDIS_11_30 0x3d7e0000
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#define ADDIS_12_12 0x3d8c0000
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#define ADDI_11_11 0x396b0000
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#define ADD_0_11_11 0x7c0b5a14
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#define ADD_3_12_2 0x7c6c1214
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#define ADD_11_0_11 0x7d605a14
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#define B 0x48000000
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#define BCL_20_31 0x429f0005
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#define BCTR 0x4e800420
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#define BEQLR 0x4d820020
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#define CMPWI_11_0 0x2c0b0000
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#define LIS_11 0x3d600000
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#define LIS_12 0x3d800000
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#define LWZU_0_12 0x840c0000
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#define LWZ_0_12 0x800c0000
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#define LWZ_11_3 0x81630000
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#define LWZ_11_11 0x816b0000
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#define LWZ_11_30 0x817e0000
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#define LWZ_12_3 0x81830000
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#define LWZ_12_12 0x818c0000
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#define MR_0_3 0x7c601b78
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#define MR_3_0 0x7c030378
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#define MFLR_0 0x7c0802a6
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#define MFLR_12 0x7d8802a6
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#define MTCTR_0 0x7c0903a6
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#define MTCTR_11 0x7d6903a6
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#define MTLR_0 0x7c0803a6
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#define NOP 0x60000000
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#define SUB_11_11_12 0x7d6c5850
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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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/* The value of a defined global symbol. */
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#define SYM_VAL(SYM) \
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((SYM)->root.u.def.section->output_section->vma \
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+ (SYM)->root.u.def.section->output_offset \
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+ (SYM)->root.u.def.value)
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static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
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static reloc_howto_type ppc_elf_howto_raw[] = {
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/* This reloc does nothing. */
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HOWTO (R_PPC_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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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_PPC_NONE", /* name */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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0, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* A standard 32 bit relocation. */
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HOWTO (R_PPC_ADDR32, /* 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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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_PPC_ADDR32", /* name */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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0xffffffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* An absolute 26 bit branch; the lower two bits must be zero.
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FIXME: we don't check that, we just clear them. */
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HOWTO (R_PPC_ADDR24, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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26, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_PPC_ADDR24", /* name */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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0x3fffffc, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* A standard 16 bit relocation. */
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HOWTO (R_PPC_ADDR16, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_PPC_ADDR16", /* name */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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0xffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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| 241 |
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/* A 16 bit relocation without overflow. */
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HOWTO (R_PPC_ADDR16_LO, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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| 248 |
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complain_overflow_dont,/* complain_on_overflow */
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| 249 |
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bfd_elf_generic_reloc, /* special_function */
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| 250 |
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"R_PPC_ADDR16_LO", /* name */
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| 251 |
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FALSE, /* partial_inplace */
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| 252 |
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0, /* src_mask */
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| 253 |
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0xffff, /* dst_mask */
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| 254 |
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FALSE), /* pcrel_offset */
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| 255 |
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| 256 |
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/* The high order 16 bits of an address. */
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| 257 |
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HOWTO (R_PPC_ADDR16_HI, /* type */
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| 258 |
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16, /* rightshift */
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| 259 |
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1, /* size (0 = byte, 1 = short, 2 = long) */
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| 260 |
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16, /* bitsize */
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| 261 |
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FALSE, /* pc_relative */
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| 262 |
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0, /* bitpos */
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| 263 |
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complain_overflow_dont, /* complain_on_overflow */
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| 264 |
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bfd_elf_generic_reloc, /* special_function */
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| 265 |
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"R_PPC_ADDR16_HI", /* name */
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| 266 |
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FALSE, /* partial_inplace */
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| 267 |
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0, /* src_mask */
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| 268 |
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0xffff, /* dst_mask */
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| 269 |
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FALSE), /* pcrel_offset */
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| 270 |
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| 271 |
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/* The high order 16 bits of an address, plus 1 if the contents of
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| 272 |
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the low 16 bits, treated as a signed number, is negative. */
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| 273 |
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HOWTO (R_PPC_ADDR16_HA, /* type */
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| 274 |
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16, /* rightshift */
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| 275 |
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1, /* size (0 = byte, 1 = short, 2 = long) */
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| 276 |
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16, /* bitsize */
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| 277 |
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FALSE, /* pc_relative */
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| 278 |
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0, /* bitpos */
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| 279 |
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complain_overflow_dont, /* complain_on_overflow */
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| 280 |
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ppc_elf_addr16_ha_reloc, /* special_function */
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| 281 |
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"R_PPC_ADDR16_HA", /* name */
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| 282 |
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FALSE, /* partial_inplace */
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| 283 |
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0, /* src_mask */
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| 284 |
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0xffff, /* dst_mask */
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| 285 |
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FALSE), /* pcrel_offset */
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| 286 |
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|
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| 287 |
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/* An absolute 16 bit branch; the lower two bits must be zero.
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| 288 |
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FIXME: we don't check that, we just clear them. */
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| 289 |
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HOWTO (R_PPC_ADDR14, /* type */
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| 290 |
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0, /* rightshift */
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| 291 |
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2, /* size (0 = byte, 1 = short, 2 = long) */
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| 292 |
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16, /* bitsize */
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| 293 |
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FALSE, /* pc_relative */
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| 294 |
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0, /* bitpos */
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| 295 |
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complain_overflow_bitfield, /* complain_on_overflow */
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| 296 |
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bfd_elf_generic_reloc, /* special_function */
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| 297 |
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"R_PPC_ADDR14", /* name */
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| 298 |
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FALSE, /* partial_inplace */
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| 299 |
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0, /* src_mask */
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| 300 |
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0xfffc, /* dst_mask */
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| 301 |
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FALSE), /* pcrel_offset */
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| 302 |
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|
| 303 |
|
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/* An absolute 16 bit branch, for which bit 10 should be set to
|
| 304 |
|
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indicate that the branch is expected to be taken. The lower two
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| 305 |
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bits must be zero. */
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| 306 |
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HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
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| 307 |
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|
0, /* rightshift */
|
| 308 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 309 |
|
|
16, /* bitsize */
|
| 310 |
|
|
FALSE, /* pc_relative */
|
| 311 |
|
|
0, /* bitpos */
|
| 312 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 313 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 314 |
|
|
"R_PPC_ADDR14_BRTAKEN",/* name */
|
| 315 |
|
|
FALSE, /* partial_inplace */
|
| 316 |
|
|
0, /* src_mask */
|
| 317 |
|
|
0xfffc, /* dst_mask */
|
| 318 |
|
|
FALSE), /* pcrel_offset */
|
| 319 |
|
|
|
| 320 |
|
|
/* An absolute 16 bit branch, for which bit 10 should be set to
|
| 321 |
|
|
indicate that the branch is not expected to be taken. The lower
|
| 322 |
|
|
two bits must be zero. */
|
| 323 |
|
|
HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
|
| 324 |
|
|
0, /* rightshift */
|
| 325 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 326 |
|
|
16, /* bitsize */
|
| 327 |
|
|
FALSE, /* pc_relative */
|
| 328 |
|
|
0, /* bitpos */
|
| 329 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 330 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 331 |
|
|
"R_PPC_ADDR14_BRNTAKEN",/* name */
|
| 332 |
|
|
FALSE, /* partial_inplace */
|
| 333 |
|
|
0, /* src_mask */
|
| 334 |
|
|
0xfffc, /* dst_mask */
|
| 335 |
|
|
FALSE), /* pcrel_offset */
|
| 336 |
|
|
|
| 337 |
|
|
/* A relative 26 bit branch; the lower two bits must be zero. */
|
| 338 |
|
|
HOWTO (R_PPC_REL24, /* type */
|
| 339 |
|
|
0, /* rightshift */
|
| 340 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 341 |
|
|
26, /* bitsize */
|
| 342 |
|
|
TRUE, /* pc_relative */
|
| 343 |
|
|
0, /* bitpos */
|
| 344 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 345 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 346 |
|
|
"R_PPC_REL24", /* name */
|
| 347 |
|
|
FALSE, /* partial_inplace */
|
| 348 |
|
|
0, /* src_mask */
|
| 349 |
|
|
0x3fffffc, /* dst_mask */
|
| 350 |
|
|
TRUE), /* pcrel_offset */
|
| 351 |
|
|
|
| 352 |
|
|
/* A relative 16 bit branch; the lower two bits must be zero. */
|
| 353 |
|
|
HOWTO (R_PPC_REL14, /* type */
|
| 354 |
|
|
0, /* rightshift */
|
| 355 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 356 |
|
|
16, /* bitsize */
|
| 357 |
|
|
TRUE, /* pc_relative */
|
| 358 |
|
|
0, /* bitpos */
|
| 359 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 360 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 361 |
|
|
"R_PPC_REL14", /* name */
|
| 362 |
|
|
FALSE, /* partial_inplace */
|
| 363 |
|
|
0, /* src_mask */
|
| 364 |
|
|
0xfffc, /* dst_mask */
|
| 365 |
|
|
TRUE), /* pcrel_offset */
|
| 366 |
|
|
|
| 367 |
|
|
/* A relative 16 bit branch. Bit 10 should be set to indicate that
|
| 368 |
|
|
the branch is expected to be taken. The lower two bits must be
|
| 369 |
|
|
zero. */
|
| 370 |
|
|
HOWTO (R_PPC_REL14_BRTAKEN, /* type */
|
| 371 |
|
|
0, /* rightshift */
|
| 372 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 373 |
|
|
16, /* bitsize */
|
| 374 |
|
|
TRUE, /* pc_relative */
|
| 375 |
|
|
0, /* bitpos */
|
| 376 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 377 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 378 |
|
|
"R_PPC_REL14_BRTAKEN", /* name */
|
| 379 |
|
|
FALSE, /* partial_inplace */
|
| 380 |
|
|
0, /* src_mask */
|
| 381 |
|
|
0xfffc, /* dst_mask */
|
| 382 |
|
|
TRUE), /* pcrel_offset */
|
| 383 |
|
|
|
| 384 |
|
|
/* A relative 16 bit branch. Bit 10 should be set to indicate that
|
| 385 |
|
|
the branch is not expected to be taken. The lower two bits must
|
| 386 |
|
|
be zero. */
|
| 387 |
|
|
HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
|
| 388 |
|
|
0, /* rightshift */
|
| 389 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 390 |
|
|
16, /* bitsize */
|
| 391 |
|
|
TRUE, /* pc_relative */
|
| 392 |
|
|
0, /* bitpos */
|
| 393 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 394 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 395 |
|
|
"R_PPC_REL14_BRNTAKEN",/* name */
|
| 396 |
|
|
FALSE, /* partial_inplace */
|
| 397 |
|
|
0, /* src_mask */
|
| 398 |
|
|
0xfffc, /* dst_mask */
|
| 399 |
|
|
TRUE), /* pcrel_offset */
|
| 400 |
|
|
|
| 401 |
|
|
/* Like R_PPC_ADDR16, but referring to the GOT table entry for the
|
| 402 |
|
|
symbol. */
|
| 403 |
|
|
HOWTO (R_PPC_GOT16, /* type */
|
| 404 |
|
|
0, /* rightshift */
|
| 405 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 406 |
|
|
16, /* bitsize */
|
| 407 |
|
|
FALSE, /* pc_relative */
|
| 408 |
|
|
0, /* bitpos */
|
| 409 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 410 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 411 |
|
|
"R_PPC_GOT16", /* name */
|
| 412 |
|
|
FALSE, /* partial_inplace */
|
| 413 |
|
|
0, /* src_mask */
|
| 414 |
|
|
0xffff, /* dst_mask */
|
| 415 |
|
|
FALSE), /* pcrel_offset */
|
| 416 |
|
|
|
| 417 |
|
|
/* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
|
| 418 |
|
|
the symbol. */
|
| 419 |
|
|
HOWTO (R_PPC_GOT16_LO, /* type */
|
| 420 |
|
|
0, /* rightshift */
|
| 421 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 422 |
|
|
16, /* bitsize */
|
| 423 |
|
|
FALSE, /* pc_relative */
|
| 424 |
|
|
0, /* bitpos */
|
| 425 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 426 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 427 |
|
|
"R_PPC_GOT16_LO", /* name */
|
| 428 |
|
|
FALSE, /* partial_inplace */
|
| 429 |
|
|
0, /* src_mask */
|
| 430 |
|
|
0xffff, /* dst_mask */
|
| 431 |
|
|
FALSE), /* pcrel_offset */
|
| 432 |
|
|
|
| 433 |
|
|
/* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
|
| 434 |
|
|
the symbol. */
|
| 435 |
|
|
HOWTO (R_PPC_GOT16_HI, /* type */
|
| 436 |
|
|
16, /* rightshift */
|
| 437 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 438 |
|
|
16, /* bitsize */
|
| 439 |
|
|
FALSE, /* pc_relative */
|
| 440 |
|
|
0, /* bitpos */
|
| 441 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 442 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 443 |
|
|
"R_PPC_GOT16_HI", /* name */
|
| 444 |
|
|
FALSE, /* partial_inplace */
|
| 445 |
|
|
0, /* src_mask */
|
| 446 |
|
|
0xffff, /* dst_mask */
|
| 447 |
|
|
FALSE), /* pcrel_offset */
|
| 448 |
|
|
|
| 449 |
|
|
/* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
|
| 450 |
|
|
the symbol. */
|
| 451 |
|
|
HOWTO (R_PPC_GOT16_HA, /* type */
|
| 452 |
|
|
16, /* rightshift */
|
| 453 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 454 |
|
|
16, /* bitsize */
|
| 455 |
|
|
FALSE, /* pc_relative */
|
| 456 |
|
|
0, /* bitpos */
|
| 457 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 458 |
|
|
ppc_elf_addr16_ha_reloc, /* special_function */
|
| 459 |
|
|
"R_PPC_GOT16_HA", /* name */
|
| 460 |
|
|
FALSE, /* partial_inplace */
|
| 461 |
|
|
0, /* src_mask */
|
| 462 |
|
|
0xffff, /* dst_mask */
|
| 463 |
|
|
FALSE), /* pcrel_offset */
|
| 464 |
|
|
|
| 465 |
|
|
/* Like R_PPC_REL24, but referring to the procedure linkage table
|
| 466 |
|
|
entry for the symbol. */
|
| 467 |
|
|
HOWTO (R_PPC_PLTREL24, /* type */
|
| 468 |
|
|
0, /* rightshift */
|
| 469 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 470 |
|
|
26, /* bitsize */
|
| 471 |
|
|
TRUE, /* pc_relative */
|
| 472 |
|
|
0, /* bitpos */
|
| 473 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 474 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 475 |
|
|
"R_PPC_PLTREL24", /* name */
|
| 476 |
|
|
FALSE, /* partial_inplace */
|
| 477 |
|
|
0, /* src_mask */
|
| 478 |
|
|
0x3fffffc, /* dst_mask */
|
| 479 |
|
|
TRUE), /* pcrel_offset */
|
| 480 |
|
|
|
| 481 |
|
|
/* This is used only by the dynamic linker. The symbol should exist
|
| 482 |
|
|
both in the object being run and in some shared library. The
|
| 483 |
|
|
dynamic linker copies the data addressed by the symbol from the
|
| 484 |
|
|
shared library into the object, because the object being
|
| 485 |
|
|
run has to have the data at some particular address. */
|
| 486 |
|
|
HOWTO (R_PPC_COPY, /* type */
|
| 487 |
|
|
0, /* rightshift */
|
| 488 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 489 |
|
|
32, /* bitsize */
|
| 490 |
|
|
FALSE, /* pc_relative */
|
| 491 |
|
|
0, /* bitpos */
|
| 492 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 493 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 494 |
|
|
"R_PPC_COPY", /* name */
|
| 495 |
|
|
FALSE, /* partial_inplace */
|
| 496 |
|
|
0, /* src_mask */
|
| 497 |
|
|
0, /* dst_mask */
|
| 498 |
|
|
FALSE), /* pcrel_offset */
|
| 499 |
|
|
|
| 500 |
|
|
/* Like R_PPC_ADDR32, but used when setting global offset table
|
| 501 |
|
|
entries. */
|
| 502 |
|
|
HOWTO (R_PPC_GLOB_DAT, /* type */
|
| 503 |
|
|
0, /* rightshift */
|
| 504 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 505 |
|
|
32, /* bitsize */
|
| 506 |
|
|
FALSE, /* pc_relative */
|
| 507 |
|
|
0, /* bitpos */
|
| 508 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 509 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 510 |
|
|
"R_PPC_GLOB_DAT", /* name */
|
| 511 |
|
|
FALSE, /* partial_inplace */
|
| 512 |
|
|
0, /* src_mask */
|
| 513 |
|
|
0xffffffff, /* dst_mask */
|
| 514 |
|
|
FALSE), /* pcrel_offset */
|
| 515 |
|
|
|
| 516 |
|
|
/* Marks a procedure linkage table entry for a symbol. */
|
| 517 |
|
|
HOWTO (R_PPC_JMP_SLOT, /* type */
|
| 518 |
|
|
0, /* rightshift */
|
| 519 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 520 |
|
|
32, /* bitsize */
|
| 521 |
|
|
FALSE, /* pc_relative */
|
| 522 |
|
|
0, /* bitpos */
|
| 523 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 524 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 525 |
|
|
"R_PPC_JMP_SLOT", /* name */
|
| 526 |
|
|
FALSE, /* partial_inplace */
|
| 527 |
|
|
0, /* src_mask */
|
| 528 |
|
|
0, /* dst_mask */
|
| 529 |
|
|
FALSE), /* pcrel_offset */
|
| 530 |
|
|
|
| 531 |
|
|
/* Used only by the dynamic linker. When the object is run, this
|
| 532 |
|
|
longword is set to the load address of the object, plus the
|
| 533 |
|
|
addend. */
|
| 534 |
|
|
HOWTO (R_PPC_RELATIVE, /* type */
|
| 535 |
|
|
0, /* rightshift */
|
| 536 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 537 |
|
|
32, /* bitsize */
|
| 538 |
|
|
FALSE, /* pc_relative */
|
| 539 |
|
|
0, /* bitpos */
|
| 540 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 541 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 542 |
|
|
"R_PPC_RELATIVE", /* name */
|
| 543 |
|
|
FALSE, /* partial_inplace */
|
| 544 |
|
|
0, /* src_mask */
|
| 545 |
|
|
0xffffffff, /* dst_mask */
|
| 546 |
|
|
FALSE), /* pcrel_offset */
|
| 547 |
|
|
|
| 548 |
|
|
/* Like R_PPC_REL24, but uses the value of the symbol within the
|
| 549 |
|
|
object rather than the final value. Normally used for
|
| 550 |
|
|
_GLOBAL_OFFSET_TABLE_. */
|
| 551 |
|
|
HOWTO (R_PPC_LOCAL24PC, /* type */
|
| 552 |
|
|
0, /* rightshift */
|
| 553 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 554 |
|
|
26, /* bitsize */
|
| 555 |
|
|
TRUE, /* pc_relative */
|
| 556 |
|
|
0, /* bitpos */
|
| 557 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 558 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 559 |
|
|
"R_PPC_LOCAL24PC", /* name */
|
| 560 |
|
|
FALSE, /* partial_inplace */
|
| 561 |
|
|
0, /* src_mask */
|
| 562 |
|
|
0x3fffffc, /* dst_mask */
|
| 563 |
|
|
TRUE), /* pcrel_offset */
|
| 564 |
|
|
|
| 565 |
|
|
/* Like R_PPC_ADDR32, but may be unaligned. */
|
| 566 |
|
|
HOWTO (R_PPC_UADDR32, /* type */
|
| 567 |
|
|
0, /* rightshift */
|
| 568 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 569 |
|
|
32, /* bitsize */
|
| 570 |
|
|
FALSE, /* pc_relative */
|
| 571 |
|
|
0, /* bitpos */
|
| 572 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 573 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 574 |
|
|
"R_PPC_UADDR32", /* name */
|
| 575 |
|
|
FALSE, /* partial_inplace */
|
| 576 |
|
|
0, /* src_mask */
|
| 577 |
|
|
0xffffffff, /* dst_mask */
|
| 578 |
|
|
FALSE), /* pcrel_offset */
|
| 579 |
|
|
|
| 580 |
|
|
/* Like R_PPC_ADDR16, but may be unaligned. */
|
| 581 |
|
|
HOWTO (R_PPC_UADDR16, /* type */
|
| 582 |
|
|
0, /* rightshift */
|
| 583 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 584 |
|
|
16, /* bitsize */
|
| 585 |
|
|
FALSE, /* pc_relative */
|
| 586 |
|
|
0, /* bitpos */
|
| 587 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 588 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 589 |
|
|
"R_PPC_UADDR16", /* name */
|
| 590 |
|
|
FALSE, /* partial_inplace */
|
| 591 |
|
|
0, /* src_mask */
|
| 592 |
|
|
0xffff, /* dst_mask */
|
| 593 |
|
|
FALSE), /* pcrel_offset */
|
| 594 |
|
|
|
| 595 |
|
|
/* 32-bit PC relative */
|
| 596 |
|
|
HOWTO (R_PPC_REL32, /* type */
|
| 597 |
|
|
0, /* rightshift */
|
| 598 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 599 |
|
|
32, /* bitsize */
|
| 600 |
|
|
TRUE, /* pc_relative */
|
| 601 |
|
|
0, /* bitpos */
|
| 602 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 603 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 604 |
|
|
"R_PPC_REL32", /* name */
|
| 605 |
|
|
FALSE, /* partial_inplace */
|
| 606 |
|
|
0, /* src_mask */
|
| 607 |
|
|
0xffffffff, /* dst_mask */
|
| 608 |
|
|
TRUE), /* pcrel_offset */
|
| 609 |
|
|
|
| 610 |
|
|
/* 32-bit relocation to the symbol's procedure linkage table.
|
| 611 |
|
|
FIXME: not supported. */
|
| 612 |
|
|
HOWTO (R_PPC_PLT32, /* type */
|
| 613 |
|
|
0, /* rightshift */
|
| 614 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 615 |
|
|
32, /* bitsize */
|
| 616 |
|
|
FALSE, /* pc_relative */
|
| 617 |
|
|
0, /* bitpos */
|
| 618 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 619 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 620 |
|
|
"R_PPC_PLT32", /* name */
|
| 621 |
|
|
FALSE, /* partial_inplace */
|
| 622 |
|
|
0, /* src_mask */
|
| 623 |
|
|
0, /* dst_mask */
|
| 624 |
|
|
FALSE), /* pcrel_offset */
|
| 625 |
|
|
|
| 626 |
|
|
/* 32-bit PC relative relocation to the symbol's procedure linkage table.
|
| 627 |
|
|
FIXME: not supported. */
|
| 628 |
|
|
HOWTO (R_PPC_PLTREL32, /* type */
|
| 629 |
|
|
0, /* rightshift */
|
| 630 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 631 |
|
|
32, /* bitsize */
|
| 632 |
|
|
TRUE, /* pc_relative */
|
| 633 |
|
|
0, /* bitpos */
|
| 634 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 635 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 636 |
|
|
"R_PPC_PLTREL32", /* name */
|
| 637 |
|
|
FALSE, /* partial_inplace */
|
| 638 |
|
|
0, /* src_mask */
|
| 639 |
|
|
0, /* dst_mask */
|
| 640 |
|
|
TRUE), /* pcrel_offset */
|
| 641 |
|
|
|
| 642 |
|
|
/* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
|
| 643 |
|
|
the symbol. */
|
| 644 |
|
|
HOWTO (R_PPC_PLT16_LO, /* type */
|
| 645 |
|
|
0, /* rightshift */
|
| 646 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 647 |
|
|
16, /* bitsize */
|
| 648 |
|
|
FALSE, /* pc_relative */
|
| 649 |
|
|
0, /* bitpos */
|
| 650 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 651 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 652 |
|
|
"R_PPC_PLT16_LO", /* name */
|
| 653 |
|
|
FALSE, /* partial_inplace */
|
| 654 |
|
|
0, /* src_mask */
|
| 655 |
|
|
0xffff, /* dst_mask */
|
| 656 |
|
|
FALSE), /* pcrel_offset */
|
| 657 |
|
|
|
| 658 |
|
|
/* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
|
| 659 |
|
|
the symbol. */
|
| 660 |
|
|
HOWTO (R_PPC_PLT16_HI, /* type */
|
| 661 |
|
|
16, /* rightshift */
|
| 662 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 663 |
|
|
16, /* bitsize */
|
| 664 |
|
|
FALSE, /* pc_relative */
|
| 665 |
|
|
0, /* bitpos */
|
| 666 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 667 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 668 |
|
|
"R_PPC_PLT16_HI", /* name */
|
| 669 |
|
|
FALSE, /* partial_inplace */
|
| 670 |
|
|
0, /* src_mask */
|
| 671 |
|
|
0xffff, /* dst_mask */
|
| 672 |
|
|
FALSE), /* pcrel_offset */
|
| 673 |
|
|
|
| 674 |
|
|
/* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
|
| 675 |
|
|
the symbol. */
|
| 676 |
|
|
HOWTO (R_PPC_PLT16_HA, /* type */
|
| 677 |
|
|
16, /* rightshift */
|
| 678 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 679 |
|
|
16, /* bitsize */
|
| 680 |
|
|
FALSE, /* pc_relative */
|
| 681 |
|
|
0, /* bitpos */
|
| 682 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 683 |
|
|
ppc_elf_addr16_ha_reloc, /* special_function */
|
| 684 |
|
|
"R_PPC_PLT16_HA", /* name */
|
| 685 |
|
|
FALSE, /* partial_inplace */
|
| 686 |
|
|
0, /* src_mask */
|
| 687 |
|
|
0xffff, /* dst_mask */
|
| 688 |
|
|
FALSE), /* pcrel_offset */
|
| 689 |
|
|
|
| 690 |
|
|
/* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
|
| 691 |
|
|
small data items. */
|
| 692 |
|
|
HOWTO (R_PPC_SDAREL16, /* type */
|
| 693 |
|
|
0, /* rightshift */
|
| 694 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 695 |
|
|
16, /* bitsize */
|
| 696 |
|
|
FALSE, /* pc_relative */
|
| 697 |
|
|
0, /* bitpos */
|
| 698 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 699 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 700 |
|
|
"R_PPC_SDAREL16", /* name */
|
| 701 |
|
|
FALSE, /* partial_inplace */
|
| 702 |
|
|
0, /* src_mask */
|
| 703 |
|
|
0xffff, /* dst_mask */
|
| 704 |
|
|
FALSE), /* pcrel_offset */
|
| 705 |
|
|
|
| 706 |
|
|
/* 16-bit section relative relocation. */
|
| 707 |
|
|
HOWTO (R_PPC_SECTOFF, /* type */
|
| 708 |
|
|
0, /* rightshift */
|
| 709 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 710 |
|
|
16, /* bitsize */
|
| 711 |
|
|
FALSE, /* pc_relative */
|
| 712 |
|
|
0, /* bitpos */
|
| 713 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 714 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 715 |
|
|
"R_PPC_SECTOFF", /* name */
|
| 716 |
|
|
FALSE, /* partial_inplace */
|
| 717 |
|
|
0, /* src_mask */
|
| 718 |
|
|
0xffff, /* dst_mask */
|
| 719 |
|
|
FALSE), /* pcrel_offset */
|
| 720 |
|
|
|
| 721 |
|
|
/* 16-bit lower half section relative relocation. */
|
| 722 |
|
|
HOWTO (R_PPC_SECTOFF_LO, /* type */
|
| 723 |
|
|
0, /* rightshift */
|
| 724 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 725 |
|
|
16, /* bitsize */
|
| 726 |
|
|
FALSE, /* pc_relative */
|
| 727 |
|
|
0, /* bitpos */
|
| 728 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 729 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 730 |
|
|
"R_PPC_SECTOFF_LO", /* name */
|
| 731 |
|
|
FALSE, /* partial_inplace */
|
| 732 |
|
|
0, /* src_mask */
|
| 733 |
|
|
0xffff, /* dst_mask */
|
| 734 |
|
|
FALSE), /* pcrel_offset */
|
| 735 |
|
|
|
| 736 |
|
|
/* 16-bit upper half section relative relocation. */
|
| 737 |
|
|
HOWTO (R_PPC_SECTOFF_HI, /* type */
|
| 738 |
|
|
16, /* rightshift */
|
| 739 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 740 |
|
|
16, /* bitsize */
|
| 741 |
|
|
FALSE, /* pc_relative */
|
| 742 |
|
|
0, /* bitpos */
|
| 743 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 744 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 745 |
|
|
"R_PPC_SECTOFF_HI", /* name */
|
| 746 |
|
|
FALSE, /* partial_inplace */
|
| 747 |
|
|
0, /* src_mask */
|
| 748 |
|
|
0xffff, /* dst_mask */
|
| 749 |
|
|
FALSE), /* pcrel_offset */
|
| 750 |
|
|
|
| 751 |
|
|
/* 16-bit upper half adjusted section relative relocation. */
|
| 752 |
|
|
HOWTO (R_PPC_SECTOFF_HA, /* type */
|
| 753 |
|
|
16, /* rightshift */
|
| 754 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 755 |
|
|
16, /* bitsize */
|
| 756 |
|
|
FALSE, /* pc_relative */
|
| 757 |
|
|
0, /* bitpos */
|
| 758 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 759 |
|
|
ppc_elf_addr16_ha_reloc, /* special_function */
|
| 760 |
|
|
"R_PPC_SECTOFF_HA", /* name */
|
| 761 |
|
|
FALSE, /* partial_inplace */
|
| 762 |
|
|
0, /* src_mask */
|
| 763 |
|
|
0xffff, /* dst_mask */
|
| 764 |
|
|
FALSE), /* pcrel_offset */
|
| 765 |
|
|
|
| 766 |
|
|
/* Marker relocs for TLS. */
|
| 767 |
|
|
HOWTO (R_PPC_TLS,
|
| 768 |
|
|
0, /* rightshift */
|
| 769 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 770 |
|
|
32, /* bitsize */
|
| 771 |
|
|
FALSE, /* pc_relative */
|
| 772 |
|
|
0, /* bitpos */
|
| 773 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 774 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 775 |
|
|
"R_PPC_TLS", /* name */
|
| 776 |
|
|
FALSE, /* partial_inplace */
|
| 777 |
|
|
0, /* src_mask */
|
| 778 |
|
|
0, /* dst_mask */
|
| 779 |
|
|
FALSE), /* pcrel_offset */
|
| 780 |
|
|
|
| 781 |
|
|
HOWTO (R_PPC_TLSGD,
|
| 782 |
|
|
0, /* rightshift */
|
| 783 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 784 |
|
|
32, /* bitsize */
|
| 785 |
|
|
FALSE, /* pc_relative */
|
| 786 |
|
|
0, /* bitpos */
|
| 787 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 788 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 789 |
|
|
"R_PPC_TLSGD", /* name */
|
| 790 |
|
|
FALSE, /* partial_inplace */
|
| 791 |
|
|
0, /* src_mask */
|
| 792 |
|
|
0, /* dst_mask */
|
| 793 |
|
|
FALSE), /* pcrel_offset */
|
| 794 |
|
|
|
| 795 |
|
|
HOWTO (R_PPC_TLSLD,
|
| 796 |
|
|
0, /* rightshift */
|
| 797 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 798 |
|
|
32, /* bitsize */
|
| 799 |
|
|
FALSE, /* pc_relative */
|
| 800 |
|
|
0, /* bitpos */
|
| 801 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 802 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 803 |
|
|
"R_PPC_TLSLD", /* name */
|
| 804 |
|
|
FALSE, /* partial_inplace */
|
| 805 |
|
|
0, /* src_mask */
|
| 806 |
|
|
0, /* dst_mask */
|
| 807 |
|
|
FALSE), /* pcrel_offset */
|
| 808 |
|
|
|
| 809 |
|
|
/* Computes the load module index of the load module that contains the
|
| 810 |
|
|
definition of its TLS sym. */
|
| 811 |
|
|
HOWTO (R_PPC_DTPMOD32,
|
| 812 |
|
|
0, /* rightshift */
|
| 813 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 814 |
|
|
32, /* bitsize */
|
| 815 |
|
|
FALSE, /* pc_relative */
|
| 816 |
|
|
0, /* bitpos */
|
| 817 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 818 |
|
|
ppc_elf_unhandled_reloc, /* special_function */
|
| 819 |
|
|
"R_PPC_DTPMOD32", /* name */
|
| 820 |
|
|
FALSE, /* partial_inplace */
|
| 821 |
|
|
0, /* src_mask */
|
| 822 |
|
|
0xffffffff, /* dst_mask */
|
| 823 |
|
|
FALSE), /* pcrel_offset */
|
| 824 |
|
|
|
| 825 |
|
|
/* Computes a dtv-relative displacement, the difference between the value
|
| 826 |
|
|
of sym+add and the base address of the thread-local storage block that
|
| 827 |
|
|
contains the definition of sym, minus 0x8000. */
|
| 828 |
|
|
HOWTO (R_PPC_DTPREL32,
|
| 829 |
|
|
0, /* rightshift */
|
| 830 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 831 |
|
|
32, /* bitsize */
|
| 832 |
|
|
FALSE, /* pc_relative */
|
| 833 |
|
|
0, /* bitpos */
|
| 834 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 835 |
|
|
ppc_elf_unhandled_reloc, /* special_function */
|
| 836 |
|
|
"R_PPC_DTPREL32", /* name */
|
| 837 |
|
|
FALSE, /* partial_inplace */
|
| 838 |
|
|
0, /* src_mask */
|
| 839 |
|
|
0xffffffff, /* dst_mask */
|
| 840 |
|
|
FALSE), /* pcrel_offset */
|
| 841 |
|
|
|
| 842 |
|
|
/* A 16 bit dtprel reloc. */
|
| 843 |
|
|
HOWTO (R_PPC_DTPREL16,
|
| 844 |
|
|
0, /* rightshift */
|
| 845 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 846 |
|
|
16, /* bitsize */
|
| 847 |
|
|
FALSE, /* pc_relative */
|
| 848 |
|
|
0, /* bitpos */
|
| 849 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 850 |
|
|
ppc_elf_unhandled_reloc, /* special_function */
|
| 851 |
|
|
"R_PPC_DTPREL16", /* name */
|
| 852 |
|
|
FALSE, /* partial_inplace */
|
| 853 |
|
|
0, /* src_mask */
|
| 854 |
|
|
0xffff, /* dst_mask */
|
| 855 |
|
|
FALSE), /* pcrel_offset */
|
| 856 |
|
|
|
| 857 |
|
|
/* Like DTPREL16, but no overflow. */
|
| 858 |
|
|
HOWTO (R_PPC_DTPREL16_LO,
|
| 859 |
|
|
0, /* rightshift */
|
| 860 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 861 |
|
|
16, /* bitsize */
|
| 862 |
|
|
FALSE, /* pc_relative */
|
| 863 |
|
|
0, /* bitpos */
|
| 864 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 865 |
|
|
ppc_elf_unhandled_reloc, /* special_function */
|
| 866 |
|
|
"R_PPC_DTPREL16_LO", /* name */
|
| 867 |
|
|
FALSE, /* partial_inplace */
|
| 868 |
|
|
0, /* src_mask */
|
| 869 |
|
|
0xffff, /* dst_mask */
|
| 870 |
|
|
FALSE), /* pcrel_offset */
|
| 871 |
|
|
|
| 872 |
|
|
/* Like DTPREL16_LO, but next higher group of 16 bits. */
|
| 873 |
|
|
HOWTO (R_PPC_DTPREL16_HI,
|
| 874 |
|
|
16, /* rightshift */
|
| 875 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 876 |
|
|
16, /* bitsize */
|
| 877 |
|
|
FALSE, /* pc_relative */
|
| 878 |
|
|
0, /* bitpos */
|
| 879 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 880 |
|
|
ppc_elf_unhandled_reloc, /* special_function */
|
| 881 |
|
|
"R_PPC_DTPREL16_HI", /* name */
|
| 882 |
|
|
FALSE, /* partial_inplace */
|
| 883 |
|
|
0, /* src_mask */
|
| 884 |
|
|
0xffff, /* dst_mask */
|
| 885 |
|
|
FALSE), /* pcrel_offset */
|
| 886 |
|
|
|
| 887 |
|
|
/* Like DTPREL16_HI, but adjust for low 16 bits. */
|
| 888 |
|
|
HOWTO (R_PPC_DTPREL16_HA,
|
| 889 |
|
|
16, /* rightshift */
|
| 890 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 891 |
|
|
16, /* bitsize */
|
| 892 |
|
|
FALSE, /* pc_relative */
|
| 893 |
|
|
0, /* bitpos */
|
| 894 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 895 |
|
|
ppc_elf_unhandled_reloc, /* special_function */
|
| 896 |
|
|
"R_PPC_DTPREL16_HA", /* name */
|
| 897 |
|
|
FALSE, /* partial_inplace */
|
| 898 |
|
|
0, /* src_mask */
|
| 899 |
|
|
0xffff, /* dst_mask */
|
| 900 |
|
|
FALSE), /* pcrel_offset */
|
| 901 |
|
|
|
| 902 |
|
|
/* Computes a tp-relative displacement, the difference between the value of
|
| 903 |
|
|
sym+add and the value of the thread pointer (r13). */
|
| 904 |
|
|
HOWTO (R_PPC_TPREL32,
|
| 905 |
|
|
0, /* rightshift */
|
| 906 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 907 |
|
|
32, /* bitsize */
|
| 908 |
|
|
FALSE, /* pc_relative */
|
| 909 |
|
|
0, /* bitpos */
|
| 910 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 911 |
|
|
ppc_elf_unhandled_reloc, /* special_function */
|
| 912 |
|
|
"R_PPC_TPREL32", /* name */
|
| 913 |
|
|
FALSE, /* partial_inplace */
|
| 914 |
|
|
0, /* src_mask */
|
| 915 |
|
|
0xffffffff, /* dst_mask */
|
| 916 |
|
|
FALSE), /* pcrel_offset */
|
| 917 |
|
|
|
| 918 |
|
|
/* A 16 bit tprel reloc. */
|
| 919 |
|
|
HOWTO (R_PPC_TPREL16,
|
| 920 |
|
|
0, /* rightshift */
|
| 921 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 922 |
|
|
16, /* bitsize */
|
| 923 |
|
|
FALSE, /* pc_relative */
|
| 924 |
|
|
0, /* bitpos */
|
| 925 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 926 |
|
|
ppc_elf_unhandled_reloc, /* special_function */
|
| 927 |
|
|
"R_PPC_TPREL16", /* name */
|
| 928 |
|
|
FALSE, /* partial_inplace */
|
| 929 |
|
|
0, /* src_mask */
|
| 930 |
|
|
0xffff, /* dst_mask */
|
| 931 |
|
|
FALSE), /* pcrel_offset */
|
| 932 |
|
|
|
| 933 |
|
|
/* Like TPREL16, but no overflow. */
|
| 934 |
|
|
HOWTO (R_PPC_TPREL16_LO,
|
| 935 |
|
|
0, /* rightshift */
|
| 936 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 937 |
|
|
16, /* bitsize */
|
| 938 |
|
|
FALSE, /* pc_relative */
|
| 939 |
|
|
0, /* bitpos */
|
| 940 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 941 |
|
|
ppc_elf_unhandled_reloc, /* special_function */
|
| 942 |
|
|
"R_PPC_TPREL16_LO", /* name */
|
| 943 |
|
|
FALSE, /* partial_inplace */
|
| 944 |
|
|
0, /* src_mask */
|
| 945 |
|
|
0xffff, /* dst_mask */
|
| 946 |
|
|
FALSE), /* pcrel_offset */
|
| 947 |
|
|
|
| 948 |
|
|
/* Like TPREL16_LO, but next higher group of 16 bits. */
|
| 949 |
|
|
HOWTO (R_PPC_TPREL16_HI,
|
| 950 |
|
|
16, /* rightshift */
|
| 951 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 952 |
|
|
16, /* bitsize */
|
| 953 |
|
|
FALSE, /* pc_relative */
|
| 954 |
|
|
0, /* bitpos */
|
| 955 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 956 |
|
|
ppc_elf_unhandled_reloc, /* special_function */
|
| 957 |
|
|
"R_PPC_TPREL16_HI", /* name */
|
| 958 |
|
|
FALSE, /* partial_inplace */
|
| 959 |
|
|
0, /* src_mask */
|
| 960 |
|
|
0xffff, /* dst_mask */
|
| 961 |
|
|
FALSE), /* pcrel_offset */
|
| 962 |
|
|
|
| 963 |
|
|
/* Like TPREL16_HI, but adjust for low 16 bits. */
|
| 964 |
|
|
HOWTO (R_PPC_TPREL16_HA,
|
| 965 |
|
|
16, /* rightshift */
|
| 966 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 967 |
|
|
16, /* bitsize */
|
| 968 |
|
|
FALSE, /* pc_relative */
|
| 969 |
|
|
0, /* bitpos */
|
| 970 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 971 |
|
|
ppc_elf_unhandled_reloc, /* special_function */
|
| 972 |
|
|
"R_PPC_TPREL16_HA", /* name */
|
| 973 |
|
|
FALSE, /* partial_inplace */
|
| 974 |
|
|
0, /* src_mask */
|
| 975 |
|
|
0xffff, /* dst_mask */
|
| 976 |
|
|
FALSE), /* pcrel_offset */
|
| 977 |
|
|
|
| 978 |
|
|
/* Allocates two contiguous entries in the GOT to hold a tls_index structure,
|
| 979 |
|
|
with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
|
| 980 |
|
|
to the first entry. */
|
| 981 |
|
|
HOWTO (R_PPC_GOT_TLSGD16,
|
| 982 |
|
|
0, /* rightshift */
|
| 983 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 984 |
|
|
16, /* bitsize */
|
| 985 |
|
|
FALSE, /* pc_relative */
|
| 986 |
|
|
0, /* bitpos */
|
| 987 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 988 |
|
|
ppc_elf_unhandled_reloc, /* special_function */
|
| 989 |
|
|
"R_PPC_GOT_TLSGD16", /* name */
|
| 990 |
|
|
FALSE, /* partial_inplace */
|
| 991 |
|
|
0, /* src_mask */
|
| 992 |
|
|
0xffff, /* dst_mask */
|
| 993 |
|
|
FALSE), /* pcrel_offset */
|
| 994 |
|
|
|
| 995 |
|
|
/* Like GOT_TLSGD16, but no overflow. */
|
| 996 |
|
|
HOWTO (R_PPC_GOT_TLSGD16_LO,
|
| 997 |
|
|
0, /* rightshift */
|
| 998 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 999 |
|
|
16, /* bitsize */
|
| 1000 |
|
|
FALSE, /* pc_relative */
|
| 1001 |
|
|
0, /* bitpos */
|
| 1002 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1003 |
|
|
ppc_elf_unhandled_reloc, /* special_function */
|
| 1004 |
|
|
"R_PPC_GOT_TLSGD16_LO", /* name */
|
| 1005 |
|
|
FALSE, /* partial_inplace */
|
| 1006 |
|
|
0, /* src_mask */
|
| 1007 |
|
|
0xffff, /* dst_mask */
|
| 1008 |
|
|
FALSE), /* pcrel_offset */
|
| 1009 |
|
|
|
| 1010 |
|
|
/* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
|
| 1011 |
|
|
HOWTO (R_PPC_GOT_TLSGD16_HI,
|
| 1012 |
|
|
16, /* rightshift */
|
| 1013 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1014 |
|
|
16, /* bitsize */
|
| 1015 |
|
|
FALSE, /* pc_relative */
|
| 1016 |
|
|
0, /* bitpos */
|
| 1017 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1018 |
|
|
ppc_elf_unhandled_reloc, /* special_function */
|
| 1019 |
|
|
"R_PPC_GOT_TLSGD16_HI", /* name */
|
| 1020 |
|
|
FALSE, /* partial_inplace */
|
| 1021 |
|
|
0, /* src_mask */
|
| 1022 |
|
|
0xffff, /* dst_mask */
|
| 1023 |
|
|
FALSE), /* pcrel_offset */
|
| 1024 |
|
|
|
| 1025 |
|
|
/* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
|
| 1026 |
|
|
HOWTO (R_PPC_GOT_TLSGD16_HA,
|
| 1027 |
|
|
16, /* rightshift */
|
| 1028 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1029 |
|
|
16, /* bitsize */
|
| 1030 |
|
|
FALSE, /* pc_relative */
|
| 1031 |
|
|
0, /* bitpos */
|
| 1032 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1033 |
|
|
ppc_elf_unhandled_reloc, /* special_function */
|
| 1034 |
|
|
"R_PPC_GOT_TLSGD16_HA", /* name */
|
| 1035 |
|
|
FALSE, /* partial_inplace */
|
| 1036 |
|
|
0, /* src_mask */
|
| 1037 |
|
|
0xffff, /* dst_mask */
|
| 1038 |
|
|
FALSE), /* pcrel_offset */
|
| 1039 |
|
|
|
| 1040 |
|
|
/* Allocates two contiguous entries in the GOT to hold a tls_index structure,
|
| 1041 |
|
|
with values (sym+add)@dtpmod and zero, and computes the offset to the
|
| 1042 |
|
|
first entry. */
|
| 1043 |
|
|
HOWTO (R_PPC_GOT_TLSLD16,
|
| 1044 |
|
|
0, /* rightshift */
|
| 1045 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1046 |
|
|
16, /* bitsize */
|
| 1047 |
|
|
FALSE, /* pc_relative */
|
| 1048 |
|
|
0, /* bitpos */
|
| 1049 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 1050 |
|
|
ppc_elf_unhandled_reloc, /* special_function */
|
| 1051 |
|
|
"R_PPC_GOT_TLSLD16", /* name */
|
| 1052 |
|
|
FALSE, /* partial_inplace */
|
| 1053 |
|
|
0, /* src_mask */
|
| 1054 |
|
|
0xffff, /* dst_mask */
|
| 1055 |
|
|
FALSE), /* pcrel_offset */
|
| 1056 |
|
|
|
| 1057 |
|
|
/* Like GOT_TLSLD16, but no overflow. */
|
| 1058 |
|
|
HOWTO (R_PPC_GOT_TLSLD16_LO,
|
| 1059 |
|
|
0, /* rightshift */
|
| 1060 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1061 |
|
|
16, /* bitsize */
|
| 1062 |
|
|
FALSE, /* pc_relative */
|
| 1063 |
|
|
0, /* bitpos */
|
| 1064 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1065 |
|
|
ppc_elf_unhandled_reloc, /* special_function */
|
| 1066 |
|
|
"R_PPC_GOT_TLSLD16_LO", /* name */
|
| 1067 |
|
|
FALSE, /* partial_inplace */
|
| 1068 |
|
|
0, /* src_mask */
|
| 1069 |
|
|
0xffff, /* dst_mask */
|
| 1070 |
|
|
FALSE), /* pcrel_offset */
|
| 1071 |
|
|
|
| 1072 |
|
|
/* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
|
| 1073 |
|
|
HOWTO (R_PPC_GOT_TLSLD16_HI,
|
| 1074 |
|
|
16, /* rightshift */
|
| 1075 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1076 |
|
|
16, /* bitsize */
|
| 1077 |
|
|
FALSE, /* pc_relative */
|
| 1078 |
|
|
0, /* bitpos */
|
| 1079 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1080 |
|
|
ppc_elf_unhandled_reloc, /* special_function */
|
| 1081 |
|
|
"R_PPC_GOT_TLSLD16_HI", /* name */
|
| 1082 |
|
|
FALSE, /* partial_inplace */
|
| 1083 |
|
|
0, /* src_mask */
|
| 1084 |
|
|
0xffff, /* dst_mask */
|
| 1085 |
|
|
FALSE), /* pcrel_offset */
|
| 1086 |
|
|
|
| 1087 |
|
|
/* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
|
| 1088 |
|
|
HOWTO (R_PPC_GOT_TLSLD16_HA,
|
| 1089 |
|
|
16, /* rightshift */
|
| 1090 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1091 |
|
|
16, /* bitsize */
|
| 1092 |
|
|
FALSE, /* pc_relative */
|
| 1093 |
|
|
0, /* bitpos */
|
| 1094 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1095 |
|
|
ppc_elf_unhandled_reloc, /* special_function */
|
| 1096 |
|
|
"R_PPC_GOT_TLSLD16_HA", /* name */
|
| 1097 |
|
|
FALSE, /* partial_inplace */
|
| 1098 |
|
|
0, /* src_mask */
|
| 1099 |
|
|
0xffff, /* dst_mask */
|
| 1100 |
|
|
FALSE), /* pcrel_offset */
|
| 1101 |
|
|
|
| 1102 |
|
|
/* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
|
| 1103 |
|
|
the offset to the entry. */
|
| 1104 |
|
|
HOWTO (R_PPC_GOT_DTPREL16,
|
| 1105 |
|
|
0, /* rightshift */
|
| 1106 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1107 |
|
|
16, /* bitsize */
|
| 1108 |
|
|
FALSE, /* pc_relative */
|
| 1109 |
|
|
0, /* bitpos */
|
| 1110 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 1111 |
|
|
ppc_elf_unhandled_reloc, /* special_function */
|
| 1112 |
|
|
"R_PPC_GOT_DTPREL16", /* name */
|
| 1113 |
|
|
FALSE, /* partial_inplace */
|
| 1114 |
|
|
0, /* src_mask */
|
| 1115 |
|
|
0xffff, /* dst_mask */
|
| 1116 |
|
|
FALSE), /* pcrel_offset */
|
| 1117 |
|
|
|
| 1118 |
|
|
/* Like GOT_DTPREL16, but no overflow. */
|
| 1119 |
|
|
HOWTO (R_PPC_GOT_DTPREL16_LO,
|
| 1120 |
|
|
0, /* rightshift */
|
| 1121 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1122 |
|
|
16, /* bitsize */
|
| 1123 |
|
|
FALSE, /* pc_relative */
|
| 1124 |
|
|
0, /* bitpos */
|
| 1125 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1126 |
|
|
ppc_elf_unhandled_reloc, /* special_function */
|
| 1127 |
|
|
"R_PPC_GOT_DTPREL16_LO", /* name */
|
| 1128 |
|
|
FALSE, /* partial_inplace */
|
| 1129 |
|
|
0, /* src_mask */
|
| 1130 |
|
|
0xffff, /* dst_mask */
|
| 1131 |
|
|
FALSE), /* pcrel_offset */
|
| 1132 |
|
|
|
| 1133 |
|
|
/* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
|
| 1134 |
|
|
HOWTO (R_PPC_GOT_DTPREL16_HI,
|
| 1135 |
|
|
16, /* rightshift */
|
| 1136 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1137 |
|
|
16, /* bitsize */
|
| 1138 |
|
|
FALSE, /* pc_relative */
|
| 1139 |
|
|
0, /* bitpos */
|
| 1140 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1141 |
|
|
ppc_elf_unhandled_reloc, /* special_function */
|
| 1142 |
|
|
"R_PPC_GOT_DTPREL16_HI", /* name */
|
| 1143 |
|
|
FALSE, /* partial_inplace */
|
| 1144 |
|
|
0, /* src_mask */
|
| 1145 |
|
|
0xffff, /* dst_mask */
|
| 1146 |
|
|
FALSE), /* pcrel_offset */
|
| 1147 |
|
|
|
| 1148 |
|
|
/* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
|
| 1149 |
|
|
HOWTO (R_PPC_GOT_DTPREL16_HA,
|
| 1150 |
|
|
16, /* rightshift */
|
| 1151 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1152 |
|
|
16, /* bitsize */
|
| 1153 |
|
|
FALSE, /* pc_relative */
|
| 1154 |
|
|
0, /* bitpos */
|
| 1155 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1156 |
|
|
ppc_elf_unhandled_reloc, /* special_function */
|
| 1157 |
|
|
"R_PPC_GOT_DTPREL16_HA", /* name */
|
| 1158 |
|
|
FALSE, /* partial_inplace */
|
| 1159 |
|
|
0, /* src_mask */
|
| 1160 |
|
|
0xffff, /* dst_mask */
|
| 1161 |
|
|
FALSE), /* pcrel_offset */
|
| 1162 |
|
|
|
| 1163 |
|
|
/* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
|
| 1164 |
|
|
offset to the entry. */
|
| 1165 |
|
|
HOWTO (R_PPC_GOT_TPREL16,
|
| 1166 |
|
|
0, /* rightshift */
|
| 1167 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1168 |
|
|
16, /* bitsize */
|
| 1169 |
|
|
FALSE, /* pc_relative */
|
| 1170 |
|
|
0, /* bitpos */
|
| 1171 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 1172 |
|
|
ppc_elf_unhandled_reloc, /* special_function */
|
| 1173 |
|
|
"R_PPC_GOT_TPREL16", /* name */
|
| 1174 |
|
|
FALSE, /* partial_inplace */
|
| 1175 |
|
|
0, /* src_mask */
|
| 1176 |
|
|
0xffff, /* dst_mask */
|
| 1177 |
|
|
FALSE), /* pcrel_offset */
|
| 1178 |
|
|
|
| 1179 |
|
|
/* Like GOT_TPREL16, but no overflow. */
|
| 1180 |
|
|
HOWTO (R_PPC_GOT_TPREL16_LO,
|
| 1181 |
|
|
0, /* rightshift */
|
| 1182 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1183 |
|
|
16, /* bitsize */
|
| 1184 |
|
|
FALSE, /* pc_relative */
|
| 1185 |
|
|
0, /* bitpos */
|
| 1186 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1187 |
|
|
ppc_elf_unhandled_reloc, /* special_function */
|
| 1188 |
|
|
"R_PPC_GOT_TPREL16_LO", /* name */
|
| 1189 |
|
|
FALSE, /* partial_inplace */
|
| 1190 |
|
|
0, /* src_mask */
|
| 1191 |
|
|
0xffff, /* dst_mask */
|
| 1192 |
|
|
FALSE), /* pcrel_offset */
|
| 1193 |
|
|
|
| 1194 |
|
|
/* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
|
| 1195 |
|
|
HOWTO (R_PPC_GOT_TPREL16_HI,
|
| 1196 |
|
|
16, /* rightshift */
|
| 1197 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1198 |
|
|
16, /* bitsize */
|
| 1199 |
|
|
FALSE, /* pc_relative */
|
| 1200 |
|
|
0, /* bitpos */
|
| 1201 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1202 |
|
|
ppc_elf_unhandled_reloc, /* special_function */
|
| 1203 |
|
|
"R_PPC_GOT_TPREL16_HI", /* name */
|
| 1204 |
|
|
FALSE, /* partial_inplace */
|
| 1205 |
|
|
0, /* src_mask */
|
| 1206 |
|
|
0xffff, /* dst_mask */
|
| 1207 |
|
|
FALSE), /* pcrel_offset */
|
| 1208 |
|
|
|
| 1209 |
|
|
/* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
|
| 1210 |
|
|
HOWTO (R_PPC_GOT_TPREL16_HA,
|
| 1211 |
|
|
16, /* rightshift */
|
| 1212 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1213 |
|
|
16, /* bitsize */
|
| 1214 |
|
|
FALSE, /* pc_relative */
|
| 1215 |
|
|
0, /* bitpos */
|
| 1216 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1217 |
|
|
ppc_elf_unhandled_reloc, /* special_function */
|
| 1218 |
|
|
"R_PPC_GOT_TPREL16_HA", /* name */
|
| 1219 |
|
|
FALSE, /* partial_inplace */
|
| 1220 |
|
|
0, /* src_mask */
|
| 1221 |
|
|
0xffff, /* dst_mask */
|
| 1222 |
|
|
FALSE), /* pcrel_offset */
|
| 1223 |
|
|
|
| 1224 |
|
|
/* The remaining relocs are from the Embedded ELF ABI, and are not
|
| 1225 |
|
|
in the SVR4 ELF ABI. */
|
| 1226 |
|
|
|
| 1227 |
|
|
/* 32 bit value resulting from the addend minus the symbol. */
|
| 1228 |
|
|
HOWTO (R_PPC_EMB_NADDR32, /* type */
|
| 1229 |
|
|
0, /* rightshift */
|
| 1230 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1231 |
|
|
32, /* bitsize */
|
| 1232 |
|
|
FALSE, /* pc_relative */
|
| 1233 |
|
|
0, /* bitpos */
|
| 1234 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 1235 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1236 |
|
|
"R_PPC_EMB_NADDR32", /* name */
|
| 1237 |
|
|
FALSE, /* partial_inplace */
|
| 1238 |
|
|
0, /* src_mask */
|
| 1239 |
|
|
0xffffffff, /* dst_mask */
|
| 1240 |
|
|
FALSE), /* pcrel_offset */
|
| 1241 |
|
|
|
| 1242 |
|
|
/* 16 bit value resulting from the addend minus the symbol. */
|
| 1243 |
|
|
HOWTO (R_PPC_EMB_NADDR16, /* type */
|
| 1244 |
|
|
0, /* rightshift */
|
| 1245 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1246 |
|
|
16, /* bitsize */
|
| 1247 |
|
|
FALSE, /* pc_relative */
|
| 1248 |
|
|
0, /* bitpos */
|
| 1249 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 1250 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1251 |
|
|
"R_PPC_EMB_NADDR16", /* name */
|
| 1252 |
|
|
FALSE, /* partial_inplace */
|
| 1253 |
|
|
0, /* src_mask */
|
| 1254 |
|
|
0xffff, /* dst_mask */
|
| 1255 |
|
|
FALSE), /* pcrel_offset */
|
| 1256 |
|
|
|
| 1257 |
|
|
/* 16 bit value resulting from the addend minus the symbol. */
|
| 1258 |
|
|
HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
|
| 1259 |
|
|
0, /* rightshift */
|
| 1260 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1261 |
|
|
16, /* bitsize */
|
| 1262 |
|
|
FALSE, /* pc_relative */
|
| 1263 |
|
|
0, /* bitpos */
|
| 1264 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1265 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1266 |
|
|
"R_PPC_EMB_ADDR16_LO", /* name */
|
| 1267 |
|
|
FALSE, /* partial_inplace */
|
| 1268 |
|
|
0, /* src_mask */
|
| 1269 |
|
|
0xffff, /* dst_mask */
|
| 1270 |
|
|
FALSE), /* pcrel_offset */
|
| 1271 |
|
|
|
| 1272 |
|
|
/* The high order 16 bits of the addend minus the symbol. */
|
| 1273 |
|
|
HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
|
| 1274 |
|
|
16, /* rightshift */
|
| 1275 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1276 |
|
|
16, /* bitsize */
|
| 1277 |
|
|
FALSE, /* pc_relative */
|
| 1278 |
|
|
0, /* bitpos */
|
| 1279 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1280 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1281 |
|
|
"R_PPC_EMB_NADDR16_HI", /* name */
|
| 1282 |
|
|
FALSE, /* partial_inplace */
|
| 1283 |
|
|
0, /* src_mask */
|
| 1284 |
|
|
0xffff, /* dst_mask */
|
| 1285 |
|
|
FALSE), /* pcrel_offset */
|
| 1286 |
|
|
|
| 1287 |
|
|
/* The high order 16 bits of the result of the addend minus the address,
|
| 1288 |
|
|
plus 1 if the contents of the low 16 bits, treated as a signed number,
|
| 1289 |
|
|
is negative. */
|
| 1290 |
|
|
HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
|
| 1291 |
|
|
16, /* rightshift */
|
| 1292 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1293 |
|
|
16, /* bitsize */
|
| 1294 |
|
|
FALSE, /* pc_relative */
|
| 1295 |
|
|
0, /* bitpos */
|
| 1296 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1297 |
|
|
ppc_elf_addr16_ha_reloc, /* special_function */
|
| 1298 |
|
|
"R_PPC_EMB_NADDR16_HA", /* name */
|
| 1299 |
|
|
FALSE, /* partial_inplace */
|
| 1300 |
|
|
0, /* src_mask */
|
| 1301 |
|
|
0xffff, /* dst_mask */
|
| 1302 |
|
|
FALSE), /* pcrel_offset */
|
| 1303 |
|
|
|
| 1304 |
|
|
/* 16 bit value resulting from allocating a 4 byte word to hold an
|
| 1305 |
|
|
address in the .sdata section, and returning the offset from
|
| 1306 |
|
|
_SDA_BASE_ for that relocation. */
|
| 1307 |
|
|
HOWTO (R_PPC_EMB_SDAI16, /* type */
|
| 1308 |
|
|
0, /* rightshift */
|
| 1309 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1310 |
|
|
16, /* bitsize */
|
| 1311 |
|
|
FALSE, /* pc_relative */
|
| 1312 |
|
|
0, /* bitpos */
|
| 1313 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 1314 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1315 |
|
|
"R_PPC_EMB_SDAI16", /* name */
|
| 1316 |
|
|
FALSE, /* partial_inplace */
|
| 1317 |
|
|
0, /* src_mask */
|
| 1318 |
|
|
0xffff, /* dst_mask */
|
| 1319 |
|
|
FALSE), /* pcrel_offset */
|
| 1320 |
|
|
|
| 1321 |
|
|
/* 16 bit value resulting from allocating a 4 byte word to hold an
|
| 1322 |
|
|
address in the .sdata2 section, and returning the offset from
|
| 1323 |
|
|
_SDA2_BASE_ for that relocation. */
|
| 1324 |
|
|
HOWTO (R_PPC_EMB_SDA2I16, /* type */
|
| 1325 |
|
|
0, /* rightshift */
|
| 1326 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1327 |
|
|
16, /* bitsize */
|
| 1328 |
|
|
FALSE, /* pc_relative */
|
| 1329 |
|
|
0, /* bitpos */
|
| 1330 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 1331 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1332 |
|
|
"R_PPC_EMB_SDA2I16", /* name */
|
| 1333 |
|
|
FALSE, /* partial_inplace */
|
| 1334 |
|
|
0, /* src_mask */
|
| 1335 |
|
|
0xffff, /* dst_mask */
|
| 1336 |
|
|
FALSE), /* pcrel_offset */
|
| 1337 |
|
|
|
| 1338 |
|
|
/* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
|
| 1339 |
|
|
small data items. */
|
| 1340 |
|
|
HOWTO (R_PPC_EMB_SDA2REL, /* type */
|
| 1341 |
|
|
0, /* rightshift */
|
| 1342 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1343 |
|
|
16, /* bitsize */
|
| 1344 |
|
|
FALSE, /* pc_relative */
|
| 1345 |
|
|
0, /* bitpos */
|
| 1346 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 1347 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1348 |
|
|
"R_PPC_EMB_SDA2REL", /* name */
|
| 1349 |
|
|
FALSE, /* partial_inplace */
|
| 1350 |
|
|
0, /* src_mask */
|
| 1351 |
|
|
0xffff, /* dst_mask */
|
| 1352 |
|
|
FALSE), /* pcrel_offset */
|
| 1353 |
|
|
|
| 1354 |
|
|
/* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
|
| 1355 |
|
|
signed offset from the appropriate base, and filling in the register
|
| 1356 |
|
|
field with the appropriate register (0, 2, or 13). */
|
| 1357 |
|
|
HOWTO (R_PPC_EMB_SDA21, /* type */
|
| 1358 |
|
|
0, /* rightshift */
|
| 1359 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1360 |
|
|
16, /* bitsize */
|
| 1361 |
|
|
FALSE, /* pc_relative */
|
| 1362 |
|
|
0, /* bitpos */
|
| 1363 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 1364 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1365 |
|
|
"R_PPC_EMB_SDA21", /* name */
|
| 1366 |
|
|
FALSE, /* partial_inplace */
|
| 1367 |
|
|
0, /* src_mask */
|
| 1368 |
|
|
0xffff, /* dst_mask */
|
| 1369 |
|
|
FALSE), /* pcrel_offset */
|
| 1370 |
|
|
|
| 1371 |
|
|
/* Relocation not handled: R_PPC_EMB_MRKREF */
|
| 1372 |
|
|
/* Relocation not handled: R_PPC_EMB_RELSEC16 */
|
| 1373 |
|
|
/* Relocation not handled: R_PPC_EMB_RELST_LO */
|
| 1374 |
|
|
/* Relocation not handled: R_PPC_EMB_RELST_HI */
|
| 1375 |
|
|
/* Relocation not handled: R_PPC_EMB_RELST_HA */
|
| 1376 |
|
|
/* Relocation not handled: R_PPC_EMB_BIT_FLD */
|
| 1377 |
|
|
|
| 1378 |
|
|
/* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
|
| 1379 |
|
|
in the 16 bit signed offset from the appropriate base, and filling in the
|
| 1380 |
|
|
register field with the appropriate register (0, 2, or 13). */
|
| 1381 |
|
|
HOWTO (R_PPC_EMB_RELSDA, /* type */
|
| 1382 |
|
|
0, /* rightshift */
|
| 1383 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1384 |
|
|
16, /* bitsize */
|
| 1385 |
|
|
FALSE, /* pc_relative */
|
| 1386 |
|
|
0, /* bitpos */
|
| 1387 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 1388 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1389 |
|
|
"R_PPC_EMB_RELSDA", /* name */
|
| 1390 |
|
|
FALSE, /* partial_inplace */
|
| 1391 |
|
|
0, /* src_mask */
|
| 1392 |
|
|
0xffff, /* dst_mask */
|
| 1393 |
|
|
FALSE), /* pcrel_offset */
|
| 1394 |
|
|
|
| 1395 |
|
|
HOWTO (R_PPC_IRELATIVE, /* type */
|
| 1396 |
|
|
0, /* rightshift */
|
| 1397 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1398 |
|
|
32, /* bitsize */
|
| 1399 |
|
|
FALSE, /* pc_relative */
|
| 1400 |
|
|
0, /* bitpos */
|
| 1401 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 1402 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1403 |
|
|
"R_PPC_IRELATIVE", /* name */
|
| 1404 |
|
|
FALSE, /* partial_inplace */
|
| 1405 |
|
|
0, /* src_mask */
|
| 1406 |
|
|
0xffffffff, /* dst_mask */
|
| 1407 |
|
|
FALSE), /* pcrel_offset */
|
| 1408 |
|
|
|
| 1409 |
|
|
/* A 16 bit relative relocation. */
|
| 1410 |
|
|
HOWTO (R_PPC_REL16, /* type */
|
| 1411 |
|
|
0, /* rightshift */
|
| 1412 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1413 |
|
|
16, /* bitsize */
|
| 1414 |
|
|
TRUE, /* pc_relative */
|
| 1415 |
|
|
0, /* bitpos */
|
| 1416 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 1417 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1418 |
|
|
"R_PPC_REL16", /* name */
|
| 1419 |
|
|
FALSE, /* partial_inplace */
|
| 1420 |
|
|
0, /* src_mask */
|
| 1421 |
|
|
0xffff, /* dst_mask */
|
| 1422 |
|
|
TRUE), /* pcrel_offset */
|
| 1423 |
|
|
|
| 1424 |
|
|
/* A 16 bit relative relocation without overflow. */
|
| 1425 |
|
|
HOWTO (R_PPC_REL16_LO, /* type */
|
| 1426 |
|
|
0, /* rightshift */
|
| 1427 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1428 |
|
|
16, /* bitsize */
|
| 1429 |
|
|
TRUE, /* pc_relative */
|
| 1430 |
|
|
0, /* bitpos */
|
| 1431 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1432 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1433 |
|
|
"R_PPC_REL16_LO", /* name */
|
| 1434 |
|
|
FALSE, /* partial_inplace */
|
| 1435 |
|
|
0, /* src_mask */
|
| 1436 |
|
|
0xffff, /* dst_mask */
|
| 1437 |
|
|
TRUE), /* pcrel_offset */
|
| 1438 |
|
|
|
| 1439 |
|
|
/* The high order 16 bits of a relative address. */
|
| 1440 |
|
|
HOWTO (R_PPC_REL16_HI, /* type */
|
| 1441 |
|
|
16, /* rightshift */
|
| 1442 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1443 |
|
|
16, /* bitsize */
|
| 1444 |
|
|
TRUE, /* pc_relative */
|
| 1445 |
|
|
0, /* bitpos */
|
| 1446 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1447 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1448 |
|
|
"R_PPC_REL16_HI", /* name */
|
| 1449 |
|
|
FALSE, /* partial_inplace */
|
| 1450 |
|
|
0, /* src_mask */
|
| 1451 |
|
|
0xffff, /* dst_mask */
|
| 1452 |
|
|
TRUE), /* pcrel_offset */
|
| 1453 |
|
|
|
| 1454 |
|
|
/* The high order 16 bits of a relative address, plus 1 if the contents of
|
| 1455 |
|
|
the low 16 bits, treated as a signed number, is negative. */
|
| 1456 |
|
|
HOWTO (R_PPC_REL16_HA, /* type */
|
| 1457 |
|
|
16, /* rightshift */
|
| 1458 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1459 |
|
|
16, /* bitsize */
|
| 1460 |
|
|
TRUE, /* pc_relative */
|
| 1461 |
|
|
0, /* bitpos */
|
| 1462 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1463 |
|
|
ppc_elf_addr16_ha_reloc, /* special_function */
|
| 1464 |
|
|
"R_PPC_REL16_HA", /* name */
|
| 1465 |
|
|
FALSE, /* partial_inplace */
|
| 1466 |
|
|
0, /* src_mask */
|
| 1467 |
|
|
0xffff, /* dst_mask */
|
| 1468 |
|
|
TRUE), /* pcrel_offset */
|
| 1469 |
|
|
|
| 1470 |
|
|
/* GNU extension to record C++ vtable hierarchy. */
|
| 1471 |
|
|
HOWTO (R_PPC_GNU_VTINHERIT, /* type */
|
| 1472 |
|
|
0, /* rightshift */
|
| 1473 |
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1474 |
|
|
0, /* bitsize */
|
| 1475 |
|
|
FALSE, /* pc_relative */
|
| 1476 |
|
|
0, /* bitpos */
|
| 1477 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1478 |
|
|
NULL, /* special_function */
|
| 1479 |
|
|
"R_PPC_GNU_VTINHERIT", /* name */
|
| 1480 |
|
|
FALSE, /* partial_inplace */
|
| 1481 |
|
|
0, /* src_mask */
|
| 1482 |
|
|
0, /* dst_mask */
|
| 1483 |
|
|
FALSE), /* pcrel_offset */
|
| 1484 |
|
|
|
| 1485 |
|
|
/* GNU extension to record C++ vtable member usage. */
|
| 1486 |
|
|
HOWTO (R_PPC_GNU_VTENTRY, /* type */
|
| 1487 |
|
|
0, /* rightshift */
|
| 1488 |
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1489 |
|
|
0, /* bitsize */
|
| 1490 |
|
|
FALSE, /* pc_relative */
|
| 1491 |
|
|
0, /* bitpos */
|
| 1492 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1493 |
|
|
NULL, /* special_function */
|
| 1494 |
|
|
"R_PPC_GNU_VTENTRY", /* name */
|
| 1495 |
|
|
FALSE, /* partial_inplace */
|
| 1496 |
|
|
0, /* src_mask */
|
| 1497 |
|
|
0, /* dst_mask */
|
| 1498 |
|
|
FALSE), /* pcrel_offset */
|
| 1499 |
|
|
|
| 1500 |
|
|
/* Phony reloc to handle AIX style TOC entries. */
|
| 1501 |
|
|
HOWTO (R_PPC_TOC16, /* type */
|
| 1502 |
|
|
0, /* rightshift */
|
| 1503 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1504 |
|
|
16, /* bitsize */
|
| 1505 |
|
|
FALSE, /* pc_relative */
|
| 1506 |
|
|
0, /* bitpos */
|
| 1507 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 1508 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1509 |
|
|
"R_PPC_TOC16", /* name */
|
| 1510 |
|
|
FALSE, /* partial_inplace */
|
| 1511 |
|
|
0, /* src_mask */
|
| 1512 |
|
|
0xffff, /* dst_mask */
|
| 1513 |
|
|
FALSE), /* pcrel_offset */
|
| 1514 |
|
|
};
|
| 1515 |
|
|
|
| 1516 |
|
|
/* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
|
| 1517 |
|
|
|
| 1518 |
|
|
static void
|
| 1519 |
|
|
ppc_elf_howto_init (void)
|
| 1520 |
|
|
{
|
| 1521 |
|
|
unsigned int i, type;
|
| 1522 |
|
|
|
| 1523 |
|
|
for (i = 0;
|
| 1524 |
|
|
i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
|
| 1525 |
|
|
i++)
|
| 1526 |
|
|
{
|
| 1527 |
|
|
type = ppc_elf_howto_raw[i].type;
|
| 1528 |
|
|
if (type >= (sizeof (ppc_elf_howto_table)
|
| 1529 |
|
|
/ sizeof (ppc_elf_howto_table[0])))
|
| 1530 |
|
|
abort ();
|
| 1531 |
|
|
ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
|
| 1532 |
|
|
}
|
| 1533 |
|
|
}
|
| 1534 |
|
|
|
| 1535 |
|
|
static reloc_howto_type *
|
| 1536 |
|
|
ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
| 1537 |
|
|
bfd_reloc_code_real_type code)
|
| 1538 |
|
|
{
|
| 1539 |
|
|
enum elf_ppc_reloc_type r;
|
| 1540 |
|
|
|
| 1541 |
|
|
/* Initialize howto table if not already done. */
|
| 1542 |
|
|
if (!ppc_elf_howto_table[R_PPC_ADDR32])
|
| 1543 |
|
|
ppc_elf_howto_init ();
|
| 1544 |
|
|
|
| 1545 |
|
|
switch (code)
|
| 1546 |
|
|
{
|
| 1547 |
|
|
default:
|
| 1548 |
|
|
return NULL;
|
| 1549 |
|
|
|
| 1550 |
|
|
case BFD_RELOC_NONE: r = R_PPC_NONE; break;
|
| 1551 |
|
|
case BFD_RELOC_32: r = R_PPC_ADDR32; break;
|
| 1552 |
|
|
case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
|
| 1553 |
|
|
case BFD_RELOC_16: r = R_PPC_ADDR16; break;
|
| 1554 |
|
|
case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
|
| 1555 |
|
|
case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
|
| 1556 |
|
|
case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
|
| 1557 |
|
|
case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
|
| 1558 |
|
|
case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
|
| 1559 |
|
|
case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
|
| 1560 |
|
|
case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
|
| 1561 |
|
|
case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
|
| 1562 |
|
|
case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
|
| 1563 |
|
|
case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
|
| 1564 |
|
|
case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
|
| 1565 |
|
|
case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
|
| 1566 |
|
|
case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
|
| 1567 |
|
|
case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
|
| 1568 |
|
|
case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
|
| 1569 |
|
|
case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
|
| 1570 |
|
|
case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
|
| 1571 |
|
|
case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
|
| 1572 |
|
|
case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
|
| 1573 |
|
|
case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
|
| 1574 |
|
|
case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
|
| 1575 |
|
|
case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
|
| 1576 |
|
|
case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
|
| 1577 |
|
|
case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
|
| 1578 |
|
|
case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
|
| 1579 |
|
|
case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
|
| 1580 |
|
|
case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
|
| 1581 |
|
|
case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
|
| 1582 |
|
|
case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
|
| 1583 |
|
|
case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
|
| 1584 |
|
|
case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
|
| 1585 |
|
|
case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
|
| 1586 |
|
|
case BFD_RELOC_PPC_TLSGD: r = R_PPC_TLSGD; break;
|
| 1587 |
|
|
case BFD_RELOC_PPC_TLSLD: r = R_PPC_TLSLD; break;
|
| 1588 |
|
|
case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
|
| 1589 |
|
|
case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
|
| 1590 |
|
|
case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
|
| 1591 |
|
|
case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
|
| 1592 |
|
|
case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
|
| 1593 |
|
|
case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
|
| 1594 |
|
|
case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
|
| 1595 |
|
|
case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
|
| 1596 |
|
|
case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
|
| 1597 |
|
|
case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
|
| 1598 |
|
|
case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
|
| 1599 |
|
|
case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
|
| 1600 |
|
|
case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
|
| 1601 |
|
|
case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
|
| 1602 |
|
|
case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
|
| 1603 |
|
|
case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
|
| 1604 |
|
|
case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
|
| 1605 |
|
|
case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
|
| 1606 |
|
|
case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
|
| 1607 |
|
|
case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
|
| 1608 |
|
|
case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
|
| 1609 |
|
|
case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
|
| 1610 |
|
|
case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
|
| 1611 |
|
|
case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
|
| 1612 |
|
|
case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
|
| 1613 |
|
|
case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
|
| 1614 |
|
|
case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
|
| 1615 |
|
|
case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
|
| 1616 |
|
|
case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
|
| 1617 |
|
|
case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
|
| 1618 |
|
|
case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
|
| 1619 |
|
|
case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
|
| 1620 |
|
|
case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
|
| 1621 |
|
|
case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
|
| 1622 |
|
|
case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
|
| 1623 |
|
|
case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
|
| 1624 |
|
|
case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
|
| 1625 |
|
|
case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
|
| 1626 |
|
|
case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
|
| 1627 |
|
|
case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
|
| 1628 |
|
|
case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
|
| 1629 |
|
|
case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
|
| 1630 |
|
|
case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
|
| 1631 |
|
|
case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
|
| 1632 |
|
|
case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
|
| 1633 |
|
|
case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
|
| 1634 |
|
|
case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
|
| 1635 |
|
|
case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
|
| 1636 |
|
|
case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
|
| 1637 |
|
|
}
|
| 1638 |
|
|
|
| 1639 |
|
|
return ppc_elf_howto_table[r];
|
| 1640 |
|
|
};
|
| 1641 |
|
|
|
| 1642 |
|
|
static reloc_howto_type *
|
| 1643 |
|
|
ppc_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
| 1644 |
|
|
const char *r_name)
|
| 1645 |
|
|
{
|
| 1646 |
|
|
unsigned int i;
|
| 1647 |
|
|
|
| 1648 |
|
|
for (i = 0;
|
| 1649 |
|
|
i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
|
| 1650 |
|
|
i++)
|
| 1651 |
|
|
if (ppc_elf_howto_raw[i].name != NULL
|
| 1652 |
|
|
&& strcasecmp (ppc_elf_howto_raw[i].name, r_name) == 0)
|
| 1653 |
|
|
return &ppc_elf_howto_raw[i];
|
| 1654 |
|
|
|
| 1655 |
|
|
return NULL;
|
| 1656 |
|
|
}
|
| 1657 |
|
|
|
| 1658 |
|
|
/* Set the howto pointer for a PowerPC ELF reloc. */
|
| 1659 |
|
|
|
| 1660 |
|
|
static void
|
| 1661 |
|
|
ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
|
| 1662 |
|
|
arelent *cache_ptr,
|
| 1663 |
|
|
Elf_Internal_Rela *dst)
|
| 1664 |
|
|
{
|
| 1665 |
|
|
/* Initialize howto table if not already done. */
|
| 1666 |
|
|
if (!ppc_elf_howto_table[R_PPC_ADDR32])
|
| 1667 |
|
|
ppc_elf_howto_init ();
|
| 1668 |
|
|
|
| 1669 |
|
|
BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
|
| 1670 |
|
|
cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
|
| 1671 |
|
|
|
| 1672 |
|
|
/* Just because the above assert didn't trigger doesn't mean that
|
| 1673 |
|
|
ELF32_R_TYPE (dst->r_info) is necessarily a valid relocation. */
|
| 1674 |
|
|
if (!cache_ptr->howto)
|
| 1675 |
|
|
{
|
| 1676 |
|
|
(*_bfd_error_handler) (_("%B: invalid relocation type %d"),
|
| 1677 |
|
|
abfd, ELF32_R_TYPE (dst->r_info));
|
| 1678 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 1679 |
|
|
|
| 1680 |
|
|
cache_ptr->howto = ppc_elf_howto_table[R_PPC_NONE];
|
| 1681 |
|
|
}
|
| 1682 |
|
|
}
|
| 1683 |
|
|
|
| 1684 |
|
|
/* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
|
| 1685 |
|
|
|
| 1686 |
|
|
static bfd_reloc_status_type
|
| 1687 |
|
|
ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
|
| 1688 |
|
|
arelent *reloc_entry,
|
| 1689 |
|
|
asymbol *symbol,
|
| 1690 |
|
|
void *data ATTRIBUTE_UNUSED,
|
| 1691 |
|
|
asection *input_section,
|
| 1692 |
|
|
bfd *output_bfd,
|
| 1693 |
|
|
char **error_message ATTRIBUTE_UNUSED)
|
| 1694 |
|
|
{
|
| 1695 |
|
|
bfd_vma relocation;
|
| 1696 |
|
|
|
| 1697 |
|
|
if (output_bfd != NULL)
|
| 1698 |
|
|
{
|
| 1699 |
|
|
reloc_entry->address += input_section->output_offset;
|
| 1700 |
|
|
return bfd_reloc_ok;
|
| 1701 |
|
|
}
|
| 1702 |
|
|
|
| 1703 |
|
|
if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
|
| 1704 |
|
|
return bfd_reloc_outofrange;
|
| 1705 |
|
|
|
| 1706 |
|
|
if (bfd_is_com_section (symbol->section))
|
| 1707 |
|
|
relocation = 0;
|
| 1708 |
|
|
else
|
| 1709 |
|
|
relocation = symbol->value;
|
| 1710 |
|
|
|
| 1711 |
|
|
relocation += symbol->section->output_section->vma;
|
| 1712 |
|
|
relocation += symbol->section->output_offset;
|
| 1713 |
|
|
relocation += reloc_entry->addend;
|
| 1714 |
|
|
if (reloc_entry->howto->pc_relative)
|
| 1715 |
|
|
relocation -= reloc_entry->address;
|
| 1716 |
|
|
|
| 1717 |
|
|
reloc_entry->addend += (relocation & 0x8000) << 1;
|
| 1718 |
|
|
|
| 1719 |
|
|
return bfd_reloc_continue;
|
| 1720 |
|
|
}
|
| 1721 |
|
|
|
| 1722 |
|
|
static bfd_reloc_status_type
|
| 1723 |
|
|
ppc_elf_unhandled_reloc (bfd *abfd,
|
| 1724 |
|
|
arelent *reloc_entry,
|
| 1725 |
|
|
asymbol *symbol,
|
| 1726 |
|
|
void *data,
|
| 1727 |
|
|
asection *input_section,
|
| 1728 |
|
|
bfd *output_bfd,
|
| 1729 |
|
|
char **error_message)
|
| 1730 |
|
|
{
|
| 1731 |
|
|
/* If this is a relocatable link (output_bfd test tells us), just
|
| 1732 |
|
|
call the generic function. Any adjustment will be done at final
|
| 1733 |
|
|
link time. */
|
| 1734 |
|
|
if (output_bfd != NULL)
|
| 1735 |
|
|
return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
|
| 1736 |
|
|
input_section, output_bfd, error_message);
|
| 1737 |
|
|
|
| 1738 |
|
|
if (error_message != NULL)
|
| 1739 |
|
|
{
|
| 1740 |
|
|
static char buf[60];
|
| 1741 |
|
|
sprintf (buf, _("generic linker can't handle %s"),
|
| 1742 |
|
|
reloc_entry->howto->name);
|
| 1743 |
|
|
*error_message = buf;
|
| 1744 |
|
|
}
|
| 1745 |
|
|
return bfd_reloc_dangerous;
|
| 1746 |
|
|
}
|
| 1747 |
|
|
|
| 1748 |
|
|
/* Sections created by the linker. */
|
| 1749 |
|
|
|
| 1750 |
|
|
typedef struct elf_linker_section
|
| 1751 |
|
|
{
|
| 1752 |
|
|
/* Pointer to the bfd section. */
|
| 1753 |
|
|
asection *section;
|
| 1754 |
|
|
/* Section name. */
|
| 1755 |
|
|
const char *name;
|
| 1756 |
|
|
/* Associated bss section name. */
|
| 1757 |
|
|
const char *bss_name;
|
| 1758 |
|
|
/* Associated symbol name. */
|
| 1759 |
|
|
const char *sym_name;
|
| 1760 |
|
|
/* Associated symbol. */
|
| 1761 |
|
|
struct elf_link_hash_entry *sym;
|
| 1762 |
|
|
} elf_linker_section_t;
|
| 1763 |
|
|
|
| 1764 |
|
|
/* Linked list of allocated pointer entries. This hangs off of the
|
| 1765 |
|
|
symbol lists, and provides allows us to return different pointers,
|
| 1766 |
|
|
based on different addend's. */
|
| 1767 |
|
|
|
| 1768 |
|
|
typedef struct elf_linker_section_pointers
|
| 1769 |
|
|
{
|
| 1770 |
|
|
/* next allocated pointer for this symbol */
|
| 1771 |
|
|
struct elf_linker_section_pointers *next;
|
| 1772 |
|
|
/* offset of pointer from beginning of section */
|
| 1773 |
|
|
bfd_vma offset;
|
| 1774 |
|
|
/* addend used */
|
| 1775 |
|
|
bfd_vma addend;
|
| 1776 |
|
|
/* which linker section this is */
|
| 1777 |
|
|
elf_linker_section_t *lsect;
|
| 1778 |
|
|
} elf_linker_section_pointers_t;
|
| 1779 |
|
|
|
| 1780 |
|
|
struct ppc_elf_obj_tdata
|
| 1781 |
|
|
{
|
| 1782 |
|
|
struct elf_obj_tdata elf;
|
| 1783 |
|
|
|
| 1784 |
|
|
/* A mapping from local symbols to offsets into the various linker
|
| 1785 |
|
|
sections added. This is index by the symbol index. */
|
| 1786 |
|
|
elf_linker_section_pointers_t **linker_section_pointers;
|
| 1787 |
|
|
|
| 1788 |
|
|
/* Flags used to auto-detect plt type. */
|
| 1789 |
|
|
unsigned int makes_plt_call : 1;
|
| 1790 |
|
|
unsigned int has_rel16 : 1;
|
| 1791 |
|
|
};
|
| 1792 |
|
|
|
| 1793 |
|
|
#define ppc_elf_tdata(bfd) \
|
| 1794 |
|
|
((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
|
| 1795 |
|
|
|
| 1796 |
|
|
#define elf_local_ptr_offsets(bfd) \
|
| 1797 |
|
|
(ppc_elf_tdata (bfd)->linker_section_pointers)
|
| 1798 |
|
|
|
| 1799 |
|
|
#define is_ppc_elf(bfd) \
|
| 1800 |
|
|
(bfd_get_flavour (bfd) == bfd_target_elf_flavour \
|
| 1801 |
|
|
&& elf_object_id (bfd) == PPC32_ELF_DATA)
|
| 1802 |
|
|
|
| 1803 |
|
|
/* Override the generic function because we store some extras. */
|
| 1804 |
|
|
|
| 1805 |
|
|
static bfd_boolean
|
| 1806 |
|
|
ppc_elf_mkobject (bfd *abfd)
|
| 1807 |
|
|
{
|
| 1808 |
|
|
return bfd_elf_allocate_object (abfd, sizeof (struct ppc_elf_obj_tdata),
|
| 1809 |
|
|
PPC32_ELF_DATA);
|
| 1810 |
|
|
}
|
| 1811 |
|
|
|
| 1812 |
|
|
/* Fix bad default arch selected for a 32 bit input bfd when the
|
| 1813 |
|
|
default is 64 bit. */
|
| 1814 |
|
|
|
| 1815 |
|
|
static bfd_boolean
|
| 1816 |
|
|
ppc_elf_object_p (bfd *abfd)
|
| 1817 |
|
|
{
|
| 1818 |
|
|
if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
|
| 1819 |
|
|
{
|
| 1820 |
|
|
Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
|
| 1821 |
|
|
|
| 1822 |
|
|
if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
|
| 1823 |
|
|
{
|
| 1824 |
|
|
/* Relies on arch after 64 bit default being 32 bit default. */
|
| 1825 |
|
|
abfd->arch_info = abfd->arch_info->next;
|
| 1826 |
|
|
BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
|
| 1827 |
|
|
}
|
| 1828 |
|
|
}
|
| 1829 |
|
|
return TRUE;
|
| 1830 |
|
|
}
|
| 1831 |
|
|
|
| 1832 |
|
|
/* Function to set whether a module needs the -mrelocatable bit set. */
|
| 1833 |
|
|
|
| 1834 |
|
|
static bfd_boolean
|
| 1835 |
|
|
ppc_elf_set_private_flags (bfd *abfd, flagword flags)
|
| 1836 |
|
|
{
|
| 1837 |
|
|
BFD_ASSERT (!elf_flags_init (abfd)
|
| 1838 |
|
|
|| elf_elfheader (abfd)->e_flags == flags);
|
| 1839 |
|
|
|
| 1840 |
|
|
elf_elfheader (abfd)->e_flags = flags;
|
| 1841 |
|
|
elf_flags_init (abfd) = TRUE;
|
| 1842 |
|
|
return TRUE;
|
| 1843 |
|
|
}
|
| 1844 |
|
|
|
| 1845 |
|
|
/* Support for core dump NOTE sections. */
|
| 1846 |
|
|
|
| 1847 |
|
|
static bfd_boolean
|
| 1848 |
|
|
ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
|
| 1849 |
|
|
{
|
| 1850 |
|
|
int offset;
|
| 1851 |
|
|
unsigned int size;
|
| 1852 |
|
|
|
| 1853 |
|
|
switch (note->descsz)
|
| 1854 |
|
|
{
|
| 1855 |
|
|
default:
|
| 1856 |
|
|
return FALSE;
|
| 1857 |
|
|
|
| 1858 |
|
|
case 268: /* Linux/PPC. */
|
| 1859 |
|
|
/* pr_cursig */
|
| 1860 |
|
|
elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
|
| 1861 |
|
|
|
| 1862 |
|
|
/* pr_pid */
|
| 1863 |
|
|
elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24);
|
| 1864 |
|
|
|
| 1865 |
|
|
/* pr_reg */
|
| 1866 |
|
|
offset = 72;
|
| 1867 |
|
|
size = 192;
|
| 1868 |
|
|
|
| 1869 |
|
|
break;
|
| 1870 |
|
|
}
|
| 1871 |
|
|
|
| 1872 |
|
|
/* Make a ".reg/999" section. */
|
| 1873 |
|
|
return _bfd_elfcore_make_pseudosection (abfd, ".reg",
|
| 1874 |
|
|
size, note->descpos + offset);
|
| 1875 |
|
|
}
|
| 1876 |
|
|
|
| 1877 |
|
|
static bfd_boolean
|
| 1878 |
|
|
ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
|
| 1879 |
|
|
{
|
| 1880 |
|
|
switch (note->descsz)
|
| 1881 |
|
|
{
|
| 1882 |
|
|
default:
|
| 1883 |
|
|
return FALSE;
|
| 1884 |
|
|
|
| 1885 |
|
|
case 128: /* Linux/PPC elf_prpsinfo. */
|
| 1886 |
|
|
elf_tdata (abfd)->core_pid
|
| 1887 |
|
|
= bfd_get_32 (abfd, note->descdata + 16);
|
| 1888 |
|
|
elf_tdata (abfd)->core_program
|
| 1889 |
|
|
= _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
|
| 1890 |
|
|
elf_tdata (abfd)->core_command
|
| 1891 |
|
|
= _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
|
| 1892 |
|
|
}
|
| 1893 |
|
|
|
| 1894 |
|
|
/* Note that for some reason, a spurious space is tacked
|
| 1895 |
|
|
onto the end of the args in some (at least one anyway)
|
| 1896 |
|
|
implementations, so strip it off if it exists. */
|
| 1897 |
|
|
|
| 1898 |
|
|
{
|
| 1899 |
|
|
char *command = elf_tdata (abfd)->core_command;
|
| 1900 |
|
|
int n = strlen (command);
|
| 1901 |
|
|
|
| 1902 |
|
|
if (0 < n && command[n - 1] == ' ')
|
| 1903 |
|
|
command[n - 1] = '\0';
|
| 1904 |
|
|
}
|
| 1905 |
|
|
|
| 1906 |
|
|
return TRUE;
|
| 1907 |
|
|
}
|
| 1908 |
|
|
|
| 1909 |
|
|
static char *
|
| 1910 |
|
|
ppc_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, ...)
|
| 1911 |
|
|
{
|
| 1912 |
|
|
switch (note_type)
|
| 1913 |
|
|
{
|
| 1914 |
|
|
default:
|
| 1915 |
|
|
return NULL;
|
| 1916 |
|
|
|
| 1917 |
|
|
case NT_PRPSINFO:
|
| 1918 |
|
|
{
|
| 1919 |
|
|
char data[128];
|
| 1920 |
|
|
va_list ap;
|
| 1921 |
|
|
|
| 1922 |
|
|
va_start (ap, note_type);
|
| 1923 |
166 |
khays |
memset (data, 0, sizeof (data));
|
| 1924 |
14 |
khays |
strncpy (data + 32, va_arg (ap, const char *), 16);
|
| 1925 |
|
|
strncpy (data + 48, va_arg (ap, const char *), 80);
|
| 1926 |
|
|
va_end (ap);
|
| 1927 |
|
|
return elfcore_write_note (abfd, buf, bufsiz,
|
| 1928 |
|
|
"CORE", note_type, data, sizeof (data));
|
| 1929 |
|
|
}
|
| 1930 |
|
|
|
| 1931 |
|
|
case NT_PRSTATUS:
|
| 1932 |
|
|
{
|
| 1933 |
|
|
char data[268];
|
| 1934 |
|
|
va_list ap;
|
| 1935 |
|
|
long pid;
|
| 1936 |
|
|
int cursig;
|
| 1937 |
|
|
const void *greg;
|
| 1938 |
|
|
|
| 1939 |
|
|
va_start (ap, note_type);
|
| 1940 |
|
|
memset (data, 0, 72);
|
| 1941 |
|
|
pid = va_arg (ap, long);
|
| 1942 |
|
|
bfd_put_32 (abfd, pid, data + 24);
|
| 1943 |
|
|
cursig = va_arg (ap, int);
|
| 1944 |
|
|
bfd_put_16 (abfd, cursig, data + 12);
|
| 1945 |
|
|
greg = va_arg (ap, const void *);
|
| 1946 |
|
|
memcpy (data + 72, greg, 192);
|
| 1947 |
|
|
memset (data + 264, 0, 4);
|
| 1948 |
|
|
va_end (ap);
|
| 1949 |
|
|
return elfcore_write_note (abfd, buf, bufsiz,
|
| 1950 |
|
|
"CORE", note_type, data, sizeof (data));
|
| 1951 |
|
|
}
|
| 1952 |
|
|
}
|
| 1953 |
|
|
}
|
| 1954 |
|
|
|
| 1955 |
|
|
/* Return address for Ith PLT stub in section PLT, for relocation REL
|
| 1956 |
|
|
or (bfd_vma) -1 if it should not be included. */
|
| 1957 |
|
|
|
| 1958 |
|
|
static bfd_vma
|
| 1959 |
|
|
ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
|
| 1960 |
|
|
const asection *plt ATTRIBUTE_UNUSED,
|
| 1961 |
|
|
const arelent *rel)
|
| 1962 |
|
|
{
|
| 1963 |
|
|
return rel->address;
|
| 1964 |
|
|
}
|
| 1965 |
|
|
|
| 1966 |
|
|
/* Handle a PowerPC specific section when reading an object file. This
|
| 1967 |
|
|
is called when bfd_section_from_shdr finds a section with an unknown
|
| 1968 |
|
|
type. */
|
| 1969 |
|
|
|
| 1970 |
|
|
static bfd_boolean
|
| 1971 |
|
|
ppc_elf_section_from_shdr (bfd *abfd,
|
| 1972 |
|
|
Elf_Internal_Shdr *hdr,
|
| 1973 |
|
|
const char *name,
|
| 1974 |
|
|
int shindex)
|
| 1975 |
|
|
{
|
| 1976 |
|
|
asection *newsect;
|
| 1977 |
|
|
flagword flags;
|
| 1978 |
|
|
|
| 1979 |
|
|
if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
|
| 1980 |
|
|
return FALSE;
|
| 1981 |
|
|
|
| 1982 |
|
|
newsect = hdr->bfd_section;
|
| 1983 |
|
|
flags = bfd_get_section_flags (abfd, newsect);
|
| 1984 |
|
|
if (hdr->sh_flags & SHF_EXCLUDE)
|
| 1985 |
|
|
flags |= SEC_EXCLUDE;
|
| 1986 |
|
|
|
| 1987 |
|
|
if (hdr->sh_type == SHT_ORDERED)
|
| 1988 |
|
|
flags |= SEC_SORT_ENTRIES;
|
| 1989 |
|
|
|
| 1990 |
|
|
bfd_set_section_flags (abfd, newsect, flags);
|
| 1991 |
|
|
return TRUE;
|
| 1992 |
|
|
}
|
| 1993 |
|
|
|
| 1994 |
|
|
/* Set up any other section flags and such that may be necessary. */
|
| 1995 |
|
|
|
| 1996 |
|
|
static bfd_boolean
|
| 1997 |
|
|
ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
|
| 1998 |
|
|
Elf_Internal_Shdr *shdr,
|
| 1999 |
|
|
asection *asect)
|
| 2000 |
|
|
{
|
| 2001 |
|
|
if ((asect->flags & SEC_SORT_ENTRIES) != 0)
|
| 2002 |
|
|
shdr->sh_type = SHT_ORDERED;
|
| 2003 |
|
|
|
| 2004 |
|
|
return TRUE;
|
| 2005 |
|
|
}
|
| 2006 |
|
|
|
| 2007 |
|
|
/* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
|
| 2008 |
|
|
need to bump up the number of section headers. */
|
| 2009 |
|
|
|
| 2010 |
|
|
static int
|
| 2011 |
|
|
ppc_elf_additional_program_headers (bfd *abfd,
|
| 2012 |
|
|
struct bfd_link_info *info ATTRIBUTE_UNUSED)
|
| 2013 |
|
|
{
|
| 2014 |
|
|
asection *s;
|
| 2015 |
|
|
int ret = 0;
|
| 2016 |
|
|
|
| 2017 |
|
|
s = bfd_get_section_by_name (abfd, ".sbss2");
|
| 2018 |
|
|
if (s != NULL && (s->flags & SEC_ALLOC) != 0)
|
| 2019 |
|
|
++ret;
|
| 2020 |
|
|
|
| 2021 |
|
|
s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
|
| 2022 |
|
|
if (s != NULL && (s->flags & SEC_ALLOC) != 0)
|
| 2023 |
|
|
++ret;
|
| 2024 |
|
|
|
| 2025 |
|
|
return ret;
|
| 2026 |
|
|
}
|
| 2027 |
|
|
|
| 2028 |
|
|
/* Add extra PPC sections -- Note, for now, make .sbss2 and
|
| 2029 |
|
|
.PPC.EMB.sbss0 a normal section, and not a bss section so
|
| 2030 |
|
|
that the linker doesn't crater when trying to make more than
|
| 2031 |
|
|
2 sections. */
|
| 2032 |
|
|
|
| 2033 |
|
|
static const struct bfd_elf_special_section ppc_elf_special_sections[] =
|
| 2034 |
|
|
{
|
| 2035 |
|
|
{ STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
|
| 2036 |
|
|
{ STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
|
| 2037 |
|
|
{ STRING_COMMA_LEN (".sbss2"), -2, SHT_PROGBITS, SHF_ALLOC },
|
| 2038 |
|
|
{ STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
|
| 2039 |
|
|
{ STRING_COMMA_LEN (".sdata2"), -2, SHT_PROGBITS, SHF_ALLOC },
|
| 2040 |
|
|
{ STRING_COMMA_LEN (".tags"), 0, SHT_ORDERED, SHF_ALLOC },
|
| 2041 |
|
|
{ STRING_COMMA_LEN (".PPC.EMB.apuinfo"), 0, SHT_NOTE, 0 },
|
| 2042 |
|
|
{ STRING_COMMA_LEN (".PPC.EMB.sbss0"), 0, SHT_PROGBITS, SHF_ALLOC },
|
| 2043 |
|
|
{ STRING_COMMA_LEN (".PPC.EMB.sdata0"), 0, SHT_PROGBITS, SHF_ALLOC },
|
| 2044 |
|
|
{ NULL, 0, 0, 0, 0 }
|
| 2045 |
|
|
};
|
| 2046 |
|
|
|
| 2047 |
|
|
/* This is what we want for new plt/got. */
|
| 2048 |
|
|
static struct bfd_elf_special_section ppc_alt_plt =
|
| 2049 |
|
|
{ STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC };
|
| 2050 |
|
|
|
| 2051 |
|
|
static const struct bfd_elf_special_section *
|
| 2052 |
|
|
ppc_elf_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
|
| 2053 |
|
|
{
|
| 2054 |
|
|
const struct bfd_elf_special_section *ssect;
|
| 2055 |
|
|
|
| 2056 |
|
|
/* See if this is one of the special sections. */
|
| 2057 |
|
|
if (sec->name == NULL)
|
| 2058 |
|
|
return NULL;
|
| 2059 |
|
|
|
| 2060 |
|
|
ssect = _bfd_elf_get_special_section (sec->name, ppc_elf_special_sections,
|
| 2061 |
|
|
sec->use_rela_p);
|
| 2062 |
|
|
if (ssect != NULL)
|
| 2063 |
|
|
{
|
| 2064 |
|
|
if (ssect == ppc_elf_special_sections && (sec->flags & SEC_LOAD) != 0)
|
| 2065 |
|
|
ssect = &ppc_alt_plt;
|
| 2066 |
|
|
return ssect;
|
| 2067 |
|
|
}
|
| 2068 |
|
|
|
| 2069 |
|
|
return _bfd_elf_get_sec_type_attr (abfd, sec);
|
| 2070 |
|
|
}
|
| 2071 |
|
|
|
| 2072 |
|
|
/* Very simple linked list structure for recording apuinfo values. */
|
| 2073 |
|
|
typedef struct apuinfo_list
|
| 2074 |
|
|
{
|
| 2075 |
|
|
struct apuinfo_list *next;
|
| 2076 |
|
|
unsigned long value;
|
| 2077 |
|
|
}
|
| 2078 |
|
|
apuinfo_list;
|
| 2079 |
|
|
|
| 2080 |
|
|
static apuinfo_list *head;
|
| 2081 |
|
|
static bfd_boolean apuinfo_set;
|
| 2082 |
|
|
|
| 2083 |
|
|
static void
|
| 2084 |
|
|
apuinfo_list_init (void)
|
| 2085 |
|
|
{
|
| 2086 |
|
|
head = NULL;
|
| 2087 |
|
|
apuinfo_set = FALSE;
|
| 2088 |
|
|
}
|
| 2089 |
|
|
|
| 2090 |
|
|
static void
|
| 2091 |
|
|
apuinfo_list_add (unsigned long value)
|
| 2092 |
|
|
{
|
| 2093 |
|
|
apuinfo_list *entry = head;
|
| 2094 |
|
|
|
| 2095 |
|
|
while (entry != NULL)
|
| 2096 |
|
|
{
|
| 2097 |
|
|
if (entry->value == value)
|
| 2098 |
|
|
return;
|
| 2099 |
|
|
entry = entry->next;
|
| 2100 |
|
|
}
|
| 2101 |
|
|
|
| 2102 |
|
|
entry = bfd_malloc (sizeof (* entry));
|
| 2103 |
|
|
if (entry == NULL)
|
| 2104 |
|
|
return;
|
| 2105 |
|
|
|
| 2106 |
|
|
entry->value = value;
|
| 2107 |
|
|
entry->next = head;
|
| 2108 |
|
|
head = entry;
|
| 2109 |
|
|
}
|
| 2110 |
|
|
|
| 2111 |
|
|
static unsigned
|
| 2112 |
|
|
apuinfo_list_length (void)
|
| 2113 |
|
|
{
|
| 2114 |
|
|
apuinfo_list *entry;
|
| 2115 |
|
|
unsigned long count;
|
| 2116 |
|
|
|
| 2117 |
|
|
for (entry = head, count = 0;
|
| 2118 |
|
|
entry;
|
| 2119 |
|
|
entry = entry->next)
|
| 2120 |
|
|
++ count;
|
| 2121 |
|
|
|
| 2122 |
|
|
return count;
|
| 2123 |
|
|
}
|
| 2124 |
|
|
|
| 2125 |
|
|
static inline unsigned long
|
| 2126 |
|
|
apuinfo_list_element (unsigned long number)
|
| 2127 |
|
|
{
|
| 2128 |
|
|
apuinfo_list * entry;
|
| 2129 |
|
|
|
| 2130 |
|
|
for (entry = head;
|
| 2131 |
|
|
entry && number --;
|
| 2132 |
|
|
entry = entry->next)
|
| 2133 |
|
|
;
|
| 2134 |
|
|
|
| 2135 |
|
|
return entry ? entry->value : 0;
|
| 2136 |
|
|
}
|
| 2137 |
|
|
|
| 2138 |
|
|
static void
|
| 2139 |
|
|
apuinfo_list_finish (void)
|
| 2140 |
|
|
{
|
| 2141 |
|
|
apuinfo_list *entry;
|
| 2142 |
|
|
|
| 2143 |
|
|
for (entry = head; entry;)
|
| 2144 |
|
|
{
|
| 2145 |
|
|
apuinfo_list *next = entry->next;
|
| 2146 |
|
|
free (entry);
|
| 2147 |
|
|
entry = next;
|
| 2148 |
|
|
}
|
| 2149 |
|
|
|
| 2150 |
|
|
head = NULL;
|
| 2151 |
|
|
}
|
| 2152 |
|
|
|
| 2153 |
|
|
#define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
|
| 2154 |
|
|
#define APUINFO_LABEL "APUinfo"
|
| 2155 |
|
|
|
| 2156 |
|
|
/* Scan the input BFDs and create a linked list of
|
| 2157 |
|
|
the APUinfo values that will need to be emitted. */
|
| 2158 |
|
|
|
| 2159 |
|
|
static void
|
| 2160 |
|
|
ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
|
| 2161 |
|
|
{
|
| 2162 |
|
|
bfd *ibfd;
|
| 2163 |
|
|
asection *asec;
|
| 2164 |
|
|
char *buffer = NULL;
|
| 2165 |
|
|
bfd_size_type largest_input_size = 0;
|
| 2166 |
|
|
unsigned i;
|
| 2167 |
|
|
unsigned long length;
|
| 2168 |
|
|
const char *error_message = NULL;
|
| 2169 |
|
|
|
| 2170 |
|
|
if (link_info == NULL)
|
| 2171 |
|
|
return;
|
| 2172 |
|
|
|
| 2173 |
|
|
apuinfo_list_init ();
|
| 2174 |
|
|
|
| 2175 |
|
|
/* Read in the input sections contents. */
|
| 2176 |
|
|
for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
|
| 2177 |
|
|
{
|
| 2178 |
|
|
unsigned long datum;
|
| 2179 |
|
|
|
| 2180 |
|
|
asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
|
| 2181 |
|
|
if (asec == NULL)
|
| 2182 |
|
|
continue;
|
| 2183 |
|
|
|
| 2184 |
|
|
error_message = _("corrupt %s section in %B");
|
| 2185 |
|
|
length = asec->size;
|
| 2186 |
|
|
if (length < 20)
|
| 2187 |
|
|
goto fail;
|
| 2188 |
|
|
|
| 2189 |
|
|
apuinfo_set = TRUE;
|
| 2190 |
|
|
if (largest_input_size < asec->size)
|
| 2191 |
|
|
{
|
| 2192 |
|
|
if (buffer)
|
| 2193 |
|
|
free (buffer);
|
| 2194 |
|
|
largest_input_size = asec->size;
|
| 2195 |
|
|
buffer = bfd_malloc (largest_input_size);
|
| 2196 |
|
|
if (!buffer)
|
| 2197 |
|
|
return;
|
| 2198 |
|
|
}
|
| 2199 |
|
|
|
| 2200 |
|
|
if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
|
| 2201 |
|
|
|| (bfd_bread (buffer, length, ibfd) != length))
|
| 2202 |
|
|
{
|
| 2203 |
|
|
error_message = _("unable to read in %s section from %B");
|
| 2204 |
|
|
goto fail;
|
| 2205 |
|
|
}
|
| 2206 |
|
|
|
| 2207 |
|
|
/* Verify the contents of the header. Note - we have to
|
| 2208 |
|
|
extract the values this way in order to allow for a
|
| 2209 |
|
|
host whose endian-ness is different from the target. */
|
| 2210 |
|
|
datum = bfd_get_32 (ibfd, buffer);
|
| 2211 |
|
|
if (datum != sizeof APUINFO_LABEL)
|
| 2212 |
|
|
goto fail;
|
| 2213 |
|
|
|
| 2214 |
|
|
datum = bfd_get_32 (ibfd, buffer + 8);
|
| 2215 |
|
|
if (datum != 0x2)
|
| 2216 |
|
|
goto fail;
|
| 2217 |
|
|
|
| 2218 |
|
|
if (strcmp (buffer + 12, APUINFO_LABEL) != 0)
|
| 2219 |
|
|
goto fail;
|
| 2220 |
|
|
|
| 2221 |
|
|
/* Get the number of bytes used for apuinfo entries. */
|
| 2222 |
|
|
datum = bfd_get_32 (ibfd, buffer + 4);
|
| 2223 |
|
|
if (datum + 20 != length)
|
| 2224 |
|
|
goto fail;
|
| 2225 |
|
|
|
| 2226 |
|
|
/* Scan the apuinfo section, building a list of apuinfo numbers. */
|
| 2227 |
|
|
for (i = 0; i < datum; i += 4)
|
| 2228 |
|
|
apuinfo_list_add (bfd_get_32 (ibfd, buffer + 20 + i));
|
| 2229 |
|
|
}
|
| 2230 |
|
|
|
| 2231 |
|
|
error_message = NULL;
|
| 2232 |
|
|
|
| 2233 |
|
|
if (apuinfo_set)
|
| 2234 |
|
|
{
|
| 2235 |
|
|
/* Compute the size of the output section. */
|
| 2236 |
|
|
unsigned num_entries = apuinfo_list_length ();
|
| 2237 |
|
|
|
| 2238 |
|
|
/* Set the output section size, if it exists. */
|
| 2239 |
|
|
asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
|
| 2240 |
|
|
|
| 2241 |
|
|
if (asec && ! bfd_set_section_size (abfd, asec, 20 + num_entries * 4))
|
| 2242 |
|
|
{
|
| 2243 |
|
|
ibfd = abfd;
|
| 2244 |
|
|
error_message = _("warning: unable to set size of %s section in %B");
|
| 2245 |
|
|
}
|
| 2246 |
|
|
}
|
| 2247 |
|
|
|
| 2248 |
|
|
fail:
|
| 2249 |
|
|
if (buffer)
|
| 2250 |
|
|
free (buffer);
|
| 2251 |
|
|
|
| 2252 |
|
|
if (error_message)
|
| 2253 |
|
|
(*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
|
| 2254 |
|
|
}
|
| 2255 |
|
|
|
| 2256 |
|
|
/* Prevent the output section from accumulating the input sections'
|
| 2257 |
|
|
contents. We have already stored this in our linked list structure. */
|
| 2258 |
|
|
|
| 2259 |
|
|
static bfd_boolean
|
| 2260 |
|
|
ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
|
| 2261 |
|
|
struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
|
| 2262 |
|
|
asection *asec,
|
| 2263 |
|
|
bfd_byte *contents ATTRIBUTE_UNUSED)
|
| 2264 |
|
|
{
|
| 2265 |
|
|
return apuinfo_set && strcmp (asec->name, APUINFO_SECTION_NAME) == 0;
|
| 2266 |
|
|
}
|
| 2267 |
|
|
|
| 2268 |
|
|
/* Finally we can generate the output section. */
|
| 2269 |
|
|
|
| 2270 |
|
|
static void
|
| 2271 |
|
|
ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
|
| 2272 |
|
|
{
|
| 2273 |
|
|
bfd_byte *buffer;
|
| 2274 |
|
|
asection *asec;
|
| 2275 |
|
|
unsigned i;
|
| 2276 |
|
|
unsigned num_entries;
|
| 2277 |
|
|
bfd_size_type length;
|
| 2278 |
|
|
|
| 2279 |
|
|
asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
|
| 2280 |
|
|
if (asec == NULL)
|
| 2281 |
|
|
return;
|
| 2282 |
|
|
|
| 2283 |
|
|
if (!apuinfo_set)
|
| 2284 |
|
|
return;
|
| 2285 |
|
|
|
| 2286 |
|
|
length = asec->size;
|
| 2287 |
|
|
if (length < 20)
|
| 2288 |
|
|
return;
|
| 2289 |
|
|
|
| 2290 |
|
|
buffer = bfd_malloc (length);
|
| 2291 |
|
|
if (buffer == NULL)
|
| 2292 |
|
|
{
|
| 2293 |
|
|
(*_bfd_error_handler)
|
| 2294 |
|
|
(_("failed to allocate space for new APUinfo section."));
|
| 2295 |
|
|
return;
|
| 2296 |
|
|
}
|
| 2297 |
|
|
|
| 2298 |
|
|
/* Create the apuinfo header. */
|
| 2299 |
|
|
num_entries = apuinfo_list_length ();
|
| 2300 |
|
|
bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
|
| 2301 |
|
|
bfd_put_32 (abfd, num_entries * 4, buffer + 4);
|
| 2302 |
|
|
bfd_put_32 (abfd, 0x2, buffer + 8);
|
| 2303 |
|
|
strcpy ((char *) buffer + 12, APUINFO_LABEL);
|
| 2304 |
|
|
|
| 2305 |
|
|
length = 20;
|
| 2306 |
|
|
for (i = 0; i < num_entries; i++)
|
| 2307 |
|
|
{
|
| 2308 |
|
|
bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
|
| 2309 |
|
|
length += 4;
|
| 2310 |
|
|
}
|
| 2311 |
|
|
|
| 2312 |
|
|
if (length != asec->size)
|
| 2313 |
|
|
(*_bfd_error_handler) (_("failed to compute new APUinfo section."));
|
| 2314 |
|
|
|
| 2315 |
|
|
if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
|
| 2316 |
|
|
(*_bfd_error_handler) (_("failed to install new APUinfo section."));
|
| 2317 |
|
|
|
| 2318 |
|
|
free (buffer);
|
| 2319 |
|
|
|
| 2320 |
|
|
apuinfo_list_finish ();
|
| 2321 |
|
|
}
|
| 2322 |
|
|
|
| 2323 |
|
|
static bfd_boolean
|
| 2324 |
|
|
is_nonpic_glink_stub (bfd *abfd, asection *glink, bfd_vma off)
|
| 2325 |
|
|
{
|
| 2326 |
|
|
bfd_byte buf[GLINK_ENTRY_SIZE];
|
| 2327 |
|
|
|
| 2328 |
|
|
if (!bfd_get_section_contents (abfd, glink, buf, off, GLINK_ENTRY_SIZE))
|
| 2329 |
|
|
return FALSE;
|
| 2330 |
|
|
|
| 2331 |
|
|
return ((bfd_get_32 (abfd, buf + 0) & 0xffff0000) == LIS_11
|
| 2332 |
|
|
&& (bfd_get_32 (abfd, buf + 4) & 0xffff0000) == LWZ_11_11
|
| 2333 |
|
|
&& bfd_get_32 (abfd, buf + 8) == MTCTR_11
|
| 2334 |
|
|
&& bfd_get_32 (abfd, buf + 12) == BCTR);
|
| 2335 |
|
|
}
|
| 2336 |
|
|
|
| 2337 |
|
|
static bfd_boolean
|
| 2338 |
|
|
section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
|
| 2339 |
|
|
{
|
| 2340 |
|
|
bfd_vma vma = *(bfd_vma *) ptr;
|
| 2341 |
|
|
return ((section->flags & SEC_ALLOC) != 0
|
| 2342 |
|
|
&& section->vma <= vma
|
| 2343 |
|
|
&& vma < section->vma + section->size);
|
| 2344 |
|
|
}
|
| 2345 |
|
|
|
| 2346 |
|
|
static long
|
| 2347 |
|
|
ppc_elf_get_synthetic_symtab (bfd *abfd, long symcount, asymbol **syms,
|
| 2348 |
|
|
long dynsymcount, asymbol **dynsyms,
|
| 2349 |
|
|
asymbol **ret)
|
| 2350 |
|
|
{
|
| 2351 |
|
|
bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
|
| 2352 |
|
|
asection *plt, *relplt, *dynamic, *glink;
|
| 2353 |
|
|
bfd_vma glink_vma = 0;
|
| 2354 |
|
|
bfd_vma resolv_vma = 0;
|
| 2355 |
|
|
bfd_vma stub_vma;
|
| 2356 |
|
|
asymbol *s;
|
| 2357 |
|
|
arelent *p;
|
| 2358 |
|
|
long count, i;
|
| 2359 |
|
|
size_t size;
|
| 2360 |
|
|
char *names;
|
| 2361 |
|
|
bfd_byte buf[4];
|
| 2362 |
|
|
|
| 2363 |
|
|
*ret = NULL;
|
| 2364 |
|
|
|
| 2365 |
|
|
if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
|
| 2366 |
|
|
return 0;
|
| 2367 |
|
|
|
| 2368 |
|
|
if (dynsymcount <= 0)
|
| 2369 |
|
|
return 0;
|
| 2370 |
|
|
|
| 2371 |
|
|
relplt = bfd_get_section_by_name (abfd, ".rela.plt");
|
| 2372 |
|
|
if (relplt == NULL)
|
| 2373 |
|
|
return 0;
|
| 2374 |
|
|
|
| 2375 |
|
|
plt = bfd_get_section_by_name (abfd, ".plt");
|
| 2376 |
|
|
if (plt == NULL)
|
| 2377 |
|
|
return 0;
|
| 2378 |
|
|
|
| 2379 |
|
|
/* Call common code to handle old-style executable PLTs. */
|
| 2380 |
|
|
if (elf_section_flags (plt) & SHF_EXECINSTR)
|
| 2381 |
|
|
return _bfd_elf_get_synthetic_symtab (abfd, symcount, syms,
|
| 2382 |
|
|
dynsymcount, dynsyms, ret);
|
| 2383 |
|
|
|
| 2384 |
|
|
/* If this object was prelinked, the prelinker stored the address
|
| 2385 |
|
|
of .glink at got[1]. If it wasn't prelinked, got[1] will be zero. */
|
| 2386 |
|
|
dynamic = bfd_get_section_by_name (abfd, ".dynamic");
|
| 2387 |
|
|
if (dynamic != NULL)
|
| 2388 |
|
|
{
|
| 2389 |
|
|
bfd_byte *dynbuf, *extdyn, *extdynend;
|
| 2390 |
|
|
size_t extdynsize;
|
| 2391 |
|
|
void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
|
| 2392 |
|
|
|
| 2393 |
|
|
if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
|
| 2394 |
|
|
return -1;
|
| 2395 |
|
|
|
| 2396 |
|
|
extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
|
| 2397 |
|
|
swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
|
| 2398 |
|
|
|
| 2399 |
|
|
extdyn = dynbuf;
|
| 2400 |
|
|
extdynend = extdyn + dynamic->size;
|
| 2401 |
|
|
for (; extdyn < extdynend; extdyn += extdynsize)
|
| 2402 |
|
|
{
|
| 2403 |
|
|
Elf_Internal_Dyn dyn;
|
| 2404 |
|
|
(*swap_dyn_in) (abfd, extdyn, &dyn);
|
| 2405 |
|
|
|
| 2406 |
|
|
if (dyn.d_tag == DT_NULL)
|
| 2407 |
|
|
break;
|
| 2408 |
|
|
|
| 2409 |
|
|
if (dyn.d_tag == DT_PPC_GOT)
|
| 2410 |
|
|
{
|
| 2411 |
|
|
unsigned int g_o_t = dyn.d_un.d_val;
|
| 2412 |
|
|
asection *got = bfd_get_section_by_name (abfd, ".got");
|
| 2413 |
|
|
if (got != NULL
|
| 2414 |
|
|
&& bfd_get_section_contents (abfd, got, buf,
|
| 2415 |
|
|
g_o_t - got->vma + 4, 4))
|
| 2416 |
|
|
glink_vma = bfd_get_32 (abfd, buf);
|
| 2417 |
|
|
break;
|
| 2418 |
|
|
}
|
| 2419 |
|
|
}
|
| 2420 |
|
|
free (dynbuf);
|
| 2421 |
|
|
}
|
| 2422 |
|
|
|
| 2423 |
|
|
/* Otherwise we read the first plt entry. */
|
| 2424 |
|
|
if (glink_vma == 0)
|
| 2425 |
|
|
{
|
| 2426 |
|
|
if (bfd_get_section_contents (abfd, plt, buf, 0, 4))
|
| 2427 |
|
|
glink_vma = bfd_get_32 (abfd, buf);
|
| 2428 |
|
|
}
|
| 2429 |
|
|
|
| 2430 |
|
|
if (glink_vma == 0)
|
| 2431 |
|
|
return 0;
|
| 2432 |
|
|
|
| 2433 |
|
|
/* The .glink section usually does not survive the final
|
| 2434 |
|
|
link; search for the section (usually .text) where the
|
| 2435 |
|
|
glink stubs now reside. */
|
| 2436 |
|
|
glink = bfd_sections_find_if (abfd, section_covers_vma, &glink_vma);
|
| 2437 |
|
|
if (glink == NULL)
|
| 2438 |
|
|
return 0;
|
| 2439 |
|
|
|
| 2440 |
|
|
/* Determine glink PLT resolver by reading the relative branch
|
| 2441 |
|
|
from the first glink stub. */
|
| 2442 |
|
|
if (bfd_get_section_contents (abfd, glink, buf,
|
| 2443 |
|
|
glink_vma - glink->vma, 4))
|
| 2444 |
|
|
{
|
| 2445 |
|
|
unsigned int insn = bfd_get_32 (abfd, buf);
|
| 2446 |
|
|
|
| 2447 |
|
|
/* The first glink stub may either branch to the resolver ... */
|
| 2448 |
|
|
insn ^= B;
|
| 2449 |
|
|
if ((insn & ~0x3fffffc) == 0)
|
| 2450 |
|
|
resolv_vma = glink_vma + (insn ^ 0x2000000) - 0x2000000;
|
| 2451 |
|
|
|
| 2452 |
|
|
/* ... or fall through a bunch of NOPs. */
|
| 2453 |
|
|
else if ((insn ^ B ^ NOP) == 0)
|
| 2454 |
|
|
for (i = 4;
|
| 2455 |
|
|
bfd_get_section_contents (abfd, glink, buf,
|
| 2456 |
|
|
glink_vma - glink->vma + i, 4);
|
| 2457 |
|
|
i += 4)
|
| 2458 |
|
|
if (bfd_get_32 (abfd, buf) != NOP)
|
| 2459 |
|
|
{
|
| 2460 |
|
|
resolv_vma = glink_vma + i;
|
| 2461 |
|
|
break;
|
| 2462 |
|
|
}
|
| 2463 |
|
|
}
|
| 2464 |
|
|
|
| 2465 |
|
|
count = relplt->size / sizeof (Elf32_External_Rela);
|
| 2466 |
|
|
stub_vma = glink_vma - (bfd_vma) count * 16;
|
| 2467 |
|
|
/* If the stubs are those for -shared/-pie then we might have
|
| 2468 |
|
|
multiple stubs for each plt entry. If that is the case then
|
| 2469 |
|
|
there is no way to associate stubs with their plt entries short
|
| 2470 |
|
|
of figuring out the GOT pointer value used in the stub. */
|
| 2471 |
|
|
if (!is_nonpic_glink_stub (abfd, glink,
|
| 2472 |
|
|
glink_vma - GLINK_ENTRY_SIZE - glink->vma))
|
| 2473 |
|
|
return 0;
|
| 2474 |
|
|
|
| 2475 |
|
|
slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
|
| 2476 |
|
|
if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
|
| 2477 |
|
|
return -1;
|
| 2478 |
|
|
|
| 2479 |
|
|
size = count * sizeof (asymbol);
|
| 2480 |
|
|
p = relplt->relocation;
|
| 2481 |
|
|
for (i = 0; i < count; i++, p++)
|
| 2482 |
|
|
{
|
| 2483 |
|
|
size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
|
| 2484 |
|
|
if (p->addend != 0)
|
| 2485 |
|
|
size += sizeof ("+0x") - 1 + 8;
|
| 2486 |
|
|
}
|
| 2487 |
|
|
|
| 2488 |
|
|
size += sizeof (asymbol) + sizeof ("__glink");
|
| 2489 |
|
|
|
| 2490 |
|
|
if (resolv_vma)
|
| 2491 |
|
|
size += sizeof (asymbol) + sizeof ("__glink_PLTresolve");
|
| 2492 |
|
|
|
| 2493 |
|
|
s = *ret = bfd_malloc (size);
|
| 2494 |
|
|
if (s == NULL)
|
| 2495 |
|
|
return -1;
|
| 2496 |
|
|
|
| 2497 |
|
|
names = (char *) (s + count + 1 + (resolv_vma != 0));
|
| 2498 |
|
|
p = relplt->relocation;
|
| 2499 |
|
|
for (i = 0; i < count; i++, p++)
|
| 2500 |
|
|
{
|
| 2501 |
|
|
size_t len;
|
| 2502 |
|
|
|
| 2503 |
|
|
*s = **p->sym_ptr_ptr;
|
| 2504 |
|
|
/* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
|
| 2505 |
|
|
we are defining a symbol, ensure one of them is set. */
|
| 2506 |
|
|
if ((s->flags & BSF_LOCAL) == 0)
|
| 2507 |
|
|
s->flags |= BSF_GLOBAL;
|
| 2508 |
|
|
s->flags |= BSF_SYNTHETIC;
|
| 2509 |
|
|
s->section = glink;
|
| 2510 |
|
|
s->value = stub_vma - glink->vma;
|
| 2511 |
|
|
s->name = names;
|
| 2512 |
|
|
s->udata.p = NULL;
|
| 2513 |
|
|
len = strlen ((*p->sym_ptr_ptr)->name);
|
| 2514 |
|
|
memcpy (names, (*p->sym_ptr_ptr)->name, len);
|
| 2515 |
|
|
names += len;
|
| 2516 |
|
|
if (p->addend != 0)
|
| 2517 |
|
|
{
|
| 2518 |
|
|
memcpy (names, "+0x", sizeof ("+0x") - 1);
|
| 2519 |
|
|
names += sizeof ("+0x") - 1;
|
| 2520 |
|
|
bfd_sprintf_vma (abfd, names, p->addend);
|
| 2521 |
|
|
names += strlen (names);
|
| 2522 |
|
|
}
|
| 2523 |
|
|
memcpy (names, "@plt", sizeof ("@plt"));
|
| 2524 |
|
|
names += sizeof ("@plt");
|
| 2525 |
|
|
++s;
|
| 2526 |
|
|
stub_vma += 16;
|
| 2527 |
|
|
}
|
| 2528 |
|
|
|
| 2529 |
|
|
/* Add a symbol at the start of the glink branch table. */
|
| 2530 |
|
|
memset (s, 0, sizeof *s);
|
| 2531 |
|
|
s->the_bfd = abfd;
|
| 2532 |
|
|
s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
|
| 2533 |
|
|
s->section = glink;
|
| 2534 |
|
|
s->value = glink_vma - glink->vma;
|
| 2535 |
|
|
s->name = names;
|
| 2536 |
|
|
memcpy (names, "__glink", sizeof ("__glink"));
|
| 2537 |
|
|
names += sizeof ("__glink");
|
| 2538 |
|
|
s++;
|
| 2539 |
|
|
count++;
|
| 2540 |
|
|
|
| 2541 |
|
|
if (resolv_vma)
|
| 2542 |
|
|
{
|
| 2543 |
|
|
/* Add a symbol for the glink PLT resolver. */
|
| 2544 |
|
|
memset (s, 0, sizeof *s);
|
| 2545 |
|
|
s->the_bfd = abfd;
|
| 2546 |
|
|
s->flags = BSF_GLOBAL | BSF_SYNTHETIC;
|
| 2547 |
|
|
s->section = glink;
|
| 2548 |
|
|
s->value = resolv_vma - glink->vma;
|
| 2549 |
|
|
s->name = names;
|
| 2550 |
|
|
memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
|
| 2551 |
|
|
names += sizeof ("__glink_PLTresolve");
|
| 2552 |
|
|
s++;
|
| 2553 |
|
|
count++;
|
| 2554 |
|
|
}
|
| 2555 |
|
|
|
| 2556 |
|
|
return count;
|
| 2557 |
|
|
}
|
| 2558 |
|
|
|
| 2559 |
|
|
/* The following functions are specific to the ELF linker, while
|
| 2560 |
|
|
functions above are used generally. They appear in this file more
|
| 2561 |
|
|
or less in the order in which they are called. eg.
|
| 2562 |
|
|
ppc_elf_check_relocs is called early in the link process,
|
| 2563 |
|
|
ppc_elf_finish_dynamic_sections is one of the last functions
|
| 2564 |
|
|
called. */
|
| 2565 |
|
|
|
| 2566 |
|
|
/* Track PLT entries needed for a given symbol. We might need more
|
| 2567 |
|
|
than one glink entry per symbol when generating a pic binary. */
|
| 2568 |
|
|
struct plt_entry
|
| 2569 |
|
|
{
|
| 2570 |
|
|
struct plt_entry *next;
|
| 2571 |
|
|
|
| 2572 |
|
|
/* -fPIC uses multiple GOT sections, one per file, called ".got2".
|
| 2573 |
|
|
This field stores the offset into .got2 used to initialise the
|
| 2574 |
|
|
GOT pointer reg. It will always be at least 32768. (Current
|
| 2575 |
|
|
gcc always uses an offset of 32768, but ld -r will pack .got2
|
| 2576 |
|
|
sections together resulting in larger offsets). */
|
| 2577 |
|
|
bfd_vma addend;
|
| 2578 |
|
|
|
| 2579 |
|
|
/* The .got2 section. */
|
| 2580 |
|
|
asection *sec;
|
| 2581 |
|
|
|
| 2582 |
|
|
/* PLT refcount or offset. */
|
| 2583 |
|
|
union
|
| 2584 |
|
|
{
|
| 2585 |
|
|
bfd_signed_vma refcount;
|
| 2586 |
|
|
bfd_vma offset;
|
| 2587 |
|
|
} plt;
|
| 2588 |
|
|
|
| 2589 |
|
|
/* .glink stub offset. */
|
| 2590 |
|
|
bfd_vma glink_offset;
|
| 2591 |
|
|
};
|
| 2592 |
|
|
|
| 2593 |
|
|
/* Of those relocs that might be copied as dynamic relocs, this function
|
| 2594 |
|
|
selects those that must be copied when linking a shared library,
|
| 2595 |
|
|
even when the symbol is local. */
|
| 2596 |
|
|
|
| 2597 |
|
|
static int
|
| 2598 |
|
|
must_be_dyn_reloc (struct bfd_link_info *info,
|
| 2599 |
|
|
enum elf_ppc_reloc_type r_type)
|
| 2600 |
|
|
{
|
| 2601 |
|
|
switch (r_type)
|
| 2602 |
|
|
{
|
| 2603 |
|
|
default:
|
| 2604 |
|
|
return 1;
|
| 2605 |
|
|
|
| 2606 |
|
|
case R_PPC_REL24:
|
| 2607 |
|
|
case R_PPC_REL14:
|
| 2608 |
|
|
case R_PPC_REL14_BRTAKEN:
|
| 2609 |
|
|
case R_PPC_REL14_BRNTAKEN:
|
| 2610 |
|
|
case R_PPC_REL32:
|
| 2611 |
|
|
return 0;
|
| 2612 |
|
|
|
| 2613 |
|
|
case R_PPC_TPREL32:
|
| 2614 |
|
|
case R_PPC_TPREL16:
|
| 2615 |
|
|
case R_PPC_TPREL16_LO:
|
| 2616 |
|
|
case R_PPC_TPREL16_HI:
|
| 2617 |
|
|
case R_PPC_TPREL16_HA:
|
| 2618 |
|
|
return !info->executable;
|
| 2619 |
|
|
}
|
| 2620 |
|
|
}
|
| 2621 |
|
|
|
| 2622 |
|
|
/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
|
| 2623 |
|
|
copying dynamic variables from a shared lib into an app's dynbss
|
| 2624 |
|
|
section, and instead use a dynamic relocation to point into the
|
| 2625 |
|
|
shared lib. */
|
| 2626 |
|
|
#define ELIMINATE_COPY_RELOCS 1
|
| 2627 |
|
|
|
| 2628 |
|
|
/* PPC ELF linker hash entry. */
|
| 2629 |
|
|
|
| 2630 |
|
|
struct ppc_elf_link_hash_entry
|
| 2631 |
|
|
{
|
| 2632 |
|
|
struct elf_link_hash_entry elf;
|
| 2633 |
|
|
|
| 2634 |
|
|
/* If this symbol is used in the linker created sections, the processor
|
| 2635 |
|
|
specific backend uses this field to map the field into the offset
|
| 2636 |
|
|
from the beginning of the section. */
|
| 2637 |
|
|
elf_linker_section_pointers_t *linker_section_pointer;
|
| 2638 |
|
|
|
| 2639 |
|
|
/* Track dynamic relocs copied for this symbol. */
|
| 2640 |
|
|
struct elf_dyn_relocs *dyn_relocs;
|
| 2641 |
|
|
|
| 2642 |
|
|
/* Contexts in which symbol is used in the GOT (or TOC).
|
| 2643 |
|
|
TLS_GD .. TLS_TLS bits are or'd into the mask as the
|
| 2644 |
|
|
corresponding relocs are encountered during check_relocs.
|
| 2645 |
|
|
tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
|
| 2646 |
|
|
indicate the corresponding GOT entry type is not needed. */
|
| 2647 |
|
|
#define TLS_GD 1 /* GD reloc. */
|
| 2648 |
|
|
#define TLS_LD 2 /* LD reloc. */
|
| 2649 |
|
|
#define TLS_TPREL 4 /* TPREL reloc, => IE. */
|
| 2650 |
|
|
#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
|
| 2651 |
|
|
#define TLS_TLS 16 /* Any TLS reloc. */
|
| 2652 |
|
|
#define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
|
| 2653 |
|
|
#define PLT_IFUNC 64 /* STT_GNU_IFUNC. */
|
| 2654 |
|
|
char tls_mask;
|
| 2655 |
|
|
|
| 2656 |
|
|
/* Nonzero if we have seen a small data relocation referring to this
|
| 2657 |
|
|
symbol. */
|
| 2658 |
|
|
unsigned char has_sda_refs;
|
| 2659 |
|
|
};
|
| 2660 |
|
|
|
| 2661 |
|
|
#define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
|
| 2662 |
|
|
|
| 2663 |
|
|
/* PPC ELF linker hash table. */
|
| 2664 |
|
|
|
| 2665 |
|
|
struct ppc_elf_link_hash_table
|
| 2666 |
|
|
{
|
| 2667 |
|
|
struct elf_link_hash_table elf;
|
| 2668 |
|
|
|
| 2669 |
|
|
/* Short-cuts to get to dynamic linker sections. */
|
| 2670 |
|
|
asection *got;
|
| 2671 |
|
|
asection *relgot;
|
| 2672 |
|
|
asection *glink;
|
| 2673 |
|
|
asection *plt;
|
| 2674 |
|
|
asection *relplt;
|
| 2675 |
|
|
asection *iplt;
|
| 2676 |
|
|
asection *reliplt;
|
| 2677 |
|
|
asection *dynbss;
|
| 2678 |
|
|
asection *relbss;
|
| 2679 |
|
|
asection *dynsbss;
|
| 2680 |
|
|
asection *relsbss;
|
| 2681 |
|
|
elf_linker_section_t sdata[2];
|
| 2682 |
|
|
asection *sbss;
|
| 2683 |
161 |
khays |
asection *glink_eh_frame;
|
| 2684 |
14 |
khays |
|
| 2685 |
|
|
/* The (unloaded but important) .rela.plt.unloaded on VxWorks. */
|
| 2686 |
|
|
asection *srelplt2;
|
| 2687 |
|
|
|
| 2688 |
|
|
/* The .got.plt section (VxWorks only)*/
|
| 2689 |
|
|
asection *sgotplt;
|
| 2690 |
|
|
|
| 2691 |
|
|
/* Shortcut to __tls_get_addr. */
|
| 2692 |
|
|
struct elf_link_hash_entry *tls_get_addr;
|
| 2693 |
|
|
|
| 2694 |
|
|
/* The bfd that forced an old-style PLT. */
|
| 2695 |
|
|
bfd *old_bfd;
|
| 2696 |
|
|
|
| 2697 |
|
|
/* TLS local dynamic got entry handling. */
|
| 2698 |
|
|
union {
|
| 2699 |
|
|
bfd_signed_vma refcount;
|
| 2700 |
|
|
bfd_vma offset;
|
| 2701 |
|
|
} tlsld_got;
|
| 2702 |
|
|
|
| 2703 |
|
|
/* Offset of branch table to PltResolve function in glink. */
|
| 2704 |
|
|
bfd_vma glink_pltresolve;
|
| 2705 |
|
|
|
| 2706 |
|
|
/* Size of reserved GOT entries. */
|
| 2707 |
|
|
unsigned int got_header_size;
|
| 2708 |
|
|
/* Non-zero if allocating the header left a gap. */
|
| 2709 |
|
|
unsigned int got_gap;
|
| 2710 |
|
|
|
| 2711 |
|
|
/* The type of PLT we have chosen to use. */
|
| 2712 |
|
|
enum ppc_elf_plt_type plt_type;
|
| 2713 |
|
|
|
| 2714 |
|
|
/* Set if we should emit symbols for stubs. */
|
| 2715 |
|
|
unsigned int emit_stub_syms:1;
|
| 2716 |
|
|
|
| 2717 |
|
|
/* Set if __tls_get_addr optimization should not be done. */
|
| 2718 |
|
|
unsigned int no_tls_get_addr_opt:1;
|
| 2719 |
|
|
|
| 2720 |
|
|
/* True if the target system is VxWorks. */
|
| 2721 |
|
|
unsigned int is_vxworks:1;
|
| 2722 |
|
|
|
| 2723 |
|
|
/* The size of PLT entries. */
|
| 2724 |
|
|
int plt_entry_size;
|
| 2725 |
|
|
/* The distance between adjacent PLT slots. */
|
| 2726 |
|
|
int plt_slot_size;
|
| 2727 |
|
|
/* The size of the first PLT entry. */
|
| 2728 |
|
|
int plt_initial_entry_size;
|
| 2729 |
|
|
|
| 2730 |
|
|
/* Small local sym cache. */
|
| 2731 |
|
|
struct sym_cache sym_cache;
|
| 2732 |
|
|
};
|
| 2733 |
|
|
|
| 2734 |
|
|
/* Rename some of the generic section flags to better document how they
|
| 2735 |
|
|
are used here. */
|
| 2736 |
|
|
|
| 2737 |
|
|
/* Nonzero if this section has TLS related relocations. */
|
| 2738 |
|
|
#define has_tls_reloc sec_flg0
|
| 2739 |
|
|
|
| 2740 |
|
|
/* Nonzero if this section has a call to __tls_get_addr. */
|
| 2741 |
|
|
#define has_tls_get_addr_call sec_flg1
|
| 2742 |
|
|
|
| 2743 |
|
|
/* Get the PPC ELF linker hash table from a link_info structure. */
|
| 2744 |
|
|
|
| 2745 |
|
|
#define ppc_elf_hash_table(p) \
|
| 2746 |
|
|
(elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
|
| 2747 |
|
|
== PPC32_ELF_DATA ? ((struct ppc_elf_link_hash_table *) ((p)->hash)) : NULL)
|
| 2748 |
|
|
|
| 2749 |
|
|
/* Create an entry in a PPC ELF linker hash table. */
|
| 2750 |
|
|
|
| 2751 |
|
|
static struct bfd_hash_entry *
|
| 2752 |
|
|
ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
|
| 2753 |
|
|
struct bfd_hash_table *table,
|
| 2754 |
|
|
const char *string)
|
| 2755 |
|
|
{
|
| 2756 |
|
|
/* Allocate the structure if it has not already been allocated by a
|
| 2757 |
|
|
subclass. */
|
| 2758 |
|
|
if (entry == NULL)
|
| 2759 |
|
|
{
|
| 2760 |
|
|
entry = bfd_hash_allocate (table,
|
| 2761 |
|
|
sizeof (struct ppc_elf_link_hash_entry));
|
| 2762 |
|
|
if (entry == NULL)
|
| 2763 |
|
|
return entry;
|
| 2764 |
|
|
}
|
| 2765 |
|
|
|
| 2766 |
|
|
/* Call the allocation method of the superclass. */
|
| 2767 |
|
|
entry = _bfd_elf_link_hash_newfunc (entry, table, string);
|
| 2768 |
|
|
if (entry != NULL)
|
| 2769 |
|
|
{
|
| 2770 |
|
|
ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
|
| 2771 |
|
|
ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
|
| 2772 |
|
|
ppc_elf_hash_entry (entry)->tls_mask = 0;
|
| 2773 |
|
|
ppc_elf_hash_entry (entry)->has_sda_refs = 0;
|
| 2774 |
|
|
}
|
| 2775 |
|
|
|
| 2776 |
|
|
return entry;
|
| 2777 |
|
|
}
|
| 2778 |
|
|
|
| 2779 |
|
|
/* Create a PPC ELF linker hash table. */
|
| 2780 |
|
|
|
| 2781 |
|
|
static struct bfd_link_hash_table *
|
| 2782 |
|
|
ppc_elf_link_hash_table_create (bfd *abfd)
|
| 2783 |
|
|
{
|
| 2784 |
|
|
struct ppc_elf_link_hash_table *ret;
|
| 2785 |
|
|
|
| 2786 |
|
|
ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
|
| 2787 |
|
|
if (ret == NULL)
|
| 2788 |
|
|
return NULL;
|
| 2789 |
|
|
|
| 2790 |
|
|
if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
|
| 2791 |
|
|
ppc_elf_link_hash_newfunc,
|
| 2792 |
|
|
sizeof (struct ppc_elf_link_hash_entry),
|
| 2793 |
|
|
PPC32_ELF_DATA))
|
| 2794 |
|
|
{
|
| 2795 |
|
|
free (ret);
|
| 2796 |
|
|
return NULL;
|
| 2797 |
|
|
}
|
| 2798 |
|
|
|
| 2799 |
|
|
ret->elf.init_plt_refcount.refcount = 0;
|
| 2800 |
|
|
ret->elf.init_plt_refcount.glist = NULL;
|
| 2801 |
|
|
ret->elf.init_plt_offset.offset = 0;
|
| 2802 |
|
|
ret->elf.init_plt_offset.glist = NULL;
|
| 2803 |
|
|
|
| 2804 |
|
|
ret->sdata[0].name = ".sdata";
|
| 2805 |
|
|
ret->sdata[0].sym_name = "_SDA_BASE_";
|
| 2806 |
|
|
ret->sdata[0].bss_name = ".sbss";
|
| 2807 |
|
|
|
| 2808 |
|
|
ret->sdata[1].name = ".sdata2";
|
| 2809 |
|
|
ret->sdata[1].sym_name = "_SDA2_BASE_";
|
| 2810 |
|
|
ret->sdata[1].bss_name = ".sbss2";
|
| 2811 |
|
|
|
| 2812 |
|
|
ret->plt_entry_size = 12;
|
| 2813 |
|
|
ret->plt_slot_size = 8;
|
| 2814 |
|
|
ret->plt_initial_entry_size = 72;
|
| 2815 |
|
|
|
| 2816 |
|
|
return &ret->elf.root;
|
| 2817 |
|
|
}
|
| 2818 |
|
|
|
| 2819 |
|
|
/* Create .got and the related sections. */
|
| 2820 |
|
|
|
| 2821 |
|
|
static bfd_boolean
|
| 2822 |
|
|
ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
|
| 2823 |
|
|
{
|
| 2824 |
|
|
struct ppc_elf_link_hash_table *htab;
|
| 2825 |
|
|
asection *s;
|
| 2826 |
|
|
flagword flags;
|
| 2827 |
|
|
|
| 2828 |
|
|
if (!_bfd_elf_create_got_section (abfd, info))
|
| 2829 |
|
|
return FALSE;
|
| 2830 |
|
|
|
| 2831 |
|
|
htab = ppc_elf_hash_table (info);
|
| 2832 |
|
|
htab->got = s = bfd_get_section_by_name (abfd, ".got");
|
| 2833 |
|
|
if (s == NULL)
|
| 2834 |
|
|
abort ();
|
| 2835 |
|
|
|
| 2836 |
|
|
if (htab->is_vxworks)
|
| 2837 |
|
|
{
|
| 2838 |
|
|
htab->sgotplt = bfd_get_section_by_name (abfd, ".got.plt");
|
| 2839 |
|
|
if (!htab->sgotplt)
|
| 2840 |
|
|
abort ();
|
| 2841 |
|
|
}
|
| 2842 |
|
|
else
|
| 2843 |
|
|
{
|
| 2844 |
|
|
/* The powerpc .got has a blrl instruction in it. Mark it
|
| 2845 |
|
|
executable. */
|
| 2846 |
|
|
flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS
|
| 2847 |
|
|
| SEC_IN_MEMORY | SEC_LINKER_CREATED);
|
| 2848 |
|
|
if (!bfd_set_section_flags (abfd, s, flags))
|
| 2849 |
|
|
return FALSE;
|
| 2850 |
|
|
}
|
| 2851 |
|
|
|
| 2852 |
|
|
htab->relgot = bfd_get_section_by_name (abfd, ".rela.got");
|
| 2853 |
|
|
if (!htab->relgot)
|
| 2854 |
|
|
abort ();
|
| 2855 |
|
|
|
| 2856 |
|
|
return TRUE;
|
| 2857 |
|
|
}
|
| 2858 |
|
|
|
| 2859 |
|
|
static bfd_boolean
|
| 2860 |
|
|
ppc_elf_create_glink (bfd *abfd, struct bfd_link_info *info)
|
| 2861 |
|
|
{
|
| 2862 |
|
|
struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
|
| 2863 |
|
|
asection *s;
|
| 2864 |
|
|
flagword flags;
|
| 2865 |
|
|
|
| 2866 |
|
|
flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | SEC_HAS_CONTENTS
|
| 2867 |
|
|
| SEC_IN_MEMORY | SEC_LINKER_CREATED);
|
| 2868 |
|
|
s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags);
|
| 2869 |
|
|
htab->glink = s;
|
| 2870 |
|
|
if (s == NULL
|
| 2871 |
|
|
|| !bfd_set_section_alignment (abfd, s, 4))
|
| 2872 |
|
|
return FALSE;
|
| 2873 |
|
|
|
| 2874 |
161 |
khays |
if (!info->no_ld_generated_unwind_info)
|
| 2875 |
|
|
{
|
| 2876 |
|
|
flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
|
| 2877 |
|
|
| SEC_IN_MEMORY | SEC_LINKER_CREATED);
|
| 2878 |
|
|
s = bfd_make_section_anyway_with_flags (abfd, ".eh_frame", flags);
|
| 2879 |
|
|
htab->glink_eh_frame = s;
|
| 2880 |
|
|
if (s == NULL
|
| 2881 |
|
|
|| !bfd_set_section_alignment (abfd, s, 2))
|
| 2882 |
|
|
return FALSE;
|
| 2883 |
|
|
}
|
| 2884 |
|
|
|
| 2885 |
14 |
khays |
flags = SEC_ALLOC | SEC_LINKER_CREATED;
|
| 2886 |
|
|
s = bfd_make_section_anyway_with_flags (abfd, ".iplt", flags);
|
| 2887 |
|
|
htab->iplt = s;
|
| 2888 |
|
|
if (s == NULL
|
| 2889 |
|
|
|| !bfd_set_section_alignment (abfd, s, 4))
|
| 2890 |
|
|
return FALSE;
|
| 2891 |
|
|
|
| 2892 |
|
|
flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
|
| 2893 |
|
|
| SEC_IN_MEMORY | SEC_LINKER_CREATED);
|
| 2894 |
166 |
khays |
s = bfd_make_section_anyway_with_flags (abfd, ".rela.iplt", flags);
|
| 2895 |
14 |
khays |
htab->reliplt = s;
|
| 2896 |
|
|
if (s == NULL
|
| 2897 |
|
|
|| ! bfd_set_section_alignment (abfd, s, 2))
|
| 2898 |
|
|
return FALSE;
|
| 2899 |
|
|
return TRUE;
|
| 2900 |
|
|
}
|
| 2901 |
|
|
|
| 2902 |
|
|
/* We have to create .dynsbss and .rela.sbss here so that they get mapped
|
| 2903 |
|
|
to output sections (just like _bfd_elf_create_dynamic_sections has
|
| 2904 |
|
|
to create .dynbss and .rela.bss). */
|
| 2905 |
|
|
|
| 2906 |
|
|
static bfd_boolean
|
| 2907 |
|
|
ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
|
| 2908 |
|
|
{
|
| 2909 |
|
|
struct ppc_elf_link_hash_table *htab;
|
| 2910 |
|
|
asection *s;
|
| 2911 |
|
|
flagword flags;
|
| 2912 |
|
|
|
| 2913 |
|
|
htab = ppc_elf_hash_table (info);
|
| 2914 |
|
|
|
| 2915 |
|
|
if (htab->got == NULL
|
| 2916 |
|
|
&& !ppc_elf_create_got (abfd, info))
|
| 2917 |
|
|
return FALSE;
|
| 2918 |
|
|
|
| 2919 |
|
|
if (!_bfd_elf_create_dynamic_sections (abfd, info))
|
| 2920 |
|
|
return FALSE;
|
| 2921 |
|
|
|
| 2922 |
|
|
if (htab->glink == NULL
|
| 2923 |
|
|
&& !ppc_elf_create_glink (abfd, info))
|
| 2924 |
|
|
return FALSE;
|
| 2925 |
|
|
|
| 2926 |
|
|
htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
|
| 2927 |
166 |
khays |
s = bfd_make_section_anyway_with_flags (abfd, ".dynsbss",
|
| 2928 |
|
|
SEC_ALLOC | SEC_LINKER_CREATED);
|
| 2929 |
14 |
khays |
htab->dynsbss = s;
|
| 2930 |
|
|
if (s == NULL)
|
| 2931 |
|
|
return FALSE;
|
| 2932 |
|
|
|
| 2933 |
|
|
if (! info->shared)
|
| 2934 |
|
|
{
|
| 2935 |
|
|
htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
|
| 2936 |
|
|
flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
|
| 2937 |
|
|
| SEC_IN_MEMORY | SEC_LINKER_CREATED);
|
| 2938 |
166 |
khays |
s = bfd_make_section_anyway_with_flags (abfd, ".rela.sbss", flags);
|
| 2939 |
14 |
khays |
htab->relsbss = s;
|
| 2940 |
|
|
if (s == NULL
|
| 2941 |
|
|
|| ! bfd_set_section_alignment (abfd, s, 2))
|
| 2942 |
|
|
return FALSE;
|
| 2943 |
|
|
}
|
| 2944 |
|
|
|
| 2945 |
|
|
if (htab->is_vxworks
|
| 2946 |
|
|
&& !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
|
| 2947 |
|
|
return FALSE;
|
| 2948 |
|
|
|
| 2949 |
|
|
htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
|
| 2950 |
|
|
htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
|
| 2951 |
|
|
if (s == NULL)
|
| 2952 |
|
|
abort ();
|
| 2953 |
|
|
|
| 2954 |
|
|
flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
|
| 2955 |
|
|
if (htab->plt_type == PLT_VXWORKS)
|
| 2956 |
|
|
/* The VxWorks PLT is a loaded section with contents. */
|
| 2957 |
|
|
flags |= SEC_HAS_CONTENTS | SEC_LOAD | SEC_READONLY;
|
| 2958 |
|
|
return bfd_set_section_flags (abfd, s, flags);
|
| 2959 |
|
|
}
|
| 2960 |
|
|
|
| 2961 |
|
|
/* Copy the extra info we tack onto an elf_link_hash_entry. */
|
| 2962 |
|
|
|
| 2963 |
|
|
static void
|
| 2964 |
|
|
ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
|
| 2965 |
|
|
struct elf_link_hash_entry *dir,
|
| 2966 |
|
|
struct elf_link_hash_entry *ind)
|
| 2967 |
|
|
{
|
| 2968 |
|
|
struct ppc_elf_link_hash_entry *edir, *eind;
|
| 2969 |
|
|
|
| 2970 |
|
|
edir = (struct ppc_elf_link_hash_entry *) dir;
|
| 2971 |
|
|
eind = (struct ppc_elf_link_hash_entry *) ind;
|
| 2972 |
|
|
|
| 2973 |
161 |
khays |
edir->tls_mask |= eind->tls_mask;
|
| 2974 |
|
|
edir->has_sda_refs |= eind->has_sda_refs;
|
| 2975 |
|
|
|
| 2976 |
|
|
/* If called to transfer flags for a weakdef during processing
|
| 2977 |
|
|
of elf_adjust_dynamic_symbol, don't copy non_got_ref.
|
| 2978 |
|
|
We clear it ourselves for ELIMINATE_COPY_RELOCS. */
|
| 2979 |
|
|
if (!(ELIMINATE_COPY_RELOCS
|
| 2980 |
|
|
&& eind->elf.root.type != bfd_link_hash_indirect
|
| 2981 |
|
|
&& edir->elf.dynamic_adjusted))
|
| 2982 |
|
|
edir->elf.non_got_ref |= eind->elf.non_got_ref;
|
| 2983 |
|
|
|
| 2984 |
|
|
edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
|
| 2985 |
|
|
edir->elf.ref_regular |= eind->elf.ref_regular;
|
| 2986 |
|
|
edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
|
| 2987 |
|
|
edir->elf.needs_plt |= eind->elf.needs_plt;
|
| 2988 |
|
|
edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
|
| 2989 |
|
|
|
| 2990 |
14 |
khays |
if (eind->dyn_relocs != NULL)
|
| 2991 |
|
|
{
|
| 2992 |
|
|
if (edir->dyn_relocs != NULL)
|
| 2993 |
|
|
{
|
| 2994 |
|
|
struct elf_dyn_relocs **pp;
|
| 2995 |
|
|
struct elf_dyn_relocs *p;
|
| 2996 |
|
|
|
| 2997 |
|
|
/* Add reloc counts against the indirect sym to the direct sym
|
| 2998 |
|
|
list. Merge any entries against the same section. */
|
| 2999 |
|
|
for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
|
| 3000 |
|
|
{
|
| 3001 |
|
|
struct elf_dyn_relocs *q;
|
| 3002 |
|
|
|
| 3003 |
|
|
for (q = edir->dyn_relocs; q != NULL; q = q->next)
|
| 3004 |
|
|
if (q->sec == p->sec)
|
| 3005 |
|
|
{
|
| 3006 |
|
|
q->pc_count += p->pc_count;
|
| 3007 |
|
|
q->count += p->count;
|
| 3008 |
|
|
*pp = p->next;
|
| 3009 |
|
|
break;
|
| 3010 |
|
|
}
|
| 3011 |
|
|
if (q == NULL)
|
| 3012 |
|
|
pp = &p->next;
|
| 3013 |
|
|
}
|
| 3014 |
|
|
*pp = edir->dyn_relocs;
|
| 3015 |
|
|
}
|
| 3016 |
|
|
|
| 3017 |
|
|
edir->dyn_relocs = eind->dyn_relocs;
|
| 3018 |
|
|
eind->dyn_relocs = NULL;
|
| 3019 |
|
|
}
|
| 3020 |
|
|
|
| 3021 |
166 |
khays |
/* If we were called to copy over info for a weak sym, that's all.
|
| 3022 |
|
|
You might think dyn_relocs need not be copied over; After all,
|
| 3023 |
|
|
both syms will be dynamic or both non-dynamic so we're just
|
| 3024 |
|
|
moving reloc accounting around. However, ELIMINATE_COPY_RELOCS
|
| 3025 |
|
|
code in ppc_elf_adjust_dynamic_symbol needs to check for
|
| 3026 |
|
|
dyn_relocs in read-only sections, and it does so on what is the
|
| 3027 |
|
|
DIR sym here. */
|
| 3028 |
|
|
if (eind->elf.root.type != bfd_link_hash_indirect)
|
| 3029 |
|
|
return;
|
| 3030 |
|
|
|
| 3031 |
14 |
khays |
/* Copy over the GOT refcount entries that we may have already seen to
|
| 3032 |
|
|
the symbol which just became indirect. */
|
| 3033 |
|
|
edir->elf.got.refcount += eind->elf.got.refcount;
|
| 3034 |
|
|
eind->elf.got.refcount = 0;
|
| 3035 |
|
|
|
| 3036 |
|
|
/* And plt entries. */
|
| 3037 |
|
|
if (eind->elf.plt.plist != NULL)
|
| 3038 |
|
|
{
|
| 3039 |
|
|
if (edir->elf.plt.plist != NULL)
|
| 3040 |
|
|
{
|
| 3041 |
|
|
struct plt_entry **entp;
|
| 3042 |
|
|
struct plt_entry *ent;
|
| 3043 |
|
|
|
| 3044 |
|
|
for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
|
| 3045 |
|
|
{
|
| 3046 |
|
|
struct plt_entry *dent;
|
| 3047 |
|
|
|
| 3048 |
|
|
for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
|
| 3049 |
|
|
if (dent->sec == ent->sec && dent->addend == ent->addend)
|
| 3050 |
|
|
{
|
| 3051 |
|
|
dent->plt.refcount += ent->plt.refcount;
|
| 3052 |
|
|
*entp = ent->next;
|
| 3053 |
|
|
break;
|
| 3054 |
|
|
}
|
| 3055 |
|
|
if (dent == NULL)
|
| 3056 |
|
|
entp = &ent->next;
|
| 3057 |
|
|
}
|
| 3058 |
|
|
*entp = edir->elf.plt.plist;
|
| 3059 |
|
|
}
|
| 3060 |
|
|
|
| 3061 |
|
|
edir->elf.plt.plist = eind->elf.plt.plist;
|
| 3062 |
|
|
eind->elf.plt.plist = NULL;
|
| 3063 |
|
|
}
|
| 3064 |
|
|
|
| 3065 |
|
|
if (eind->elf.dynindx != -1)
|
| 3066 |
|
|
{
|
| 3067 |
|
|
if (edir->elf.dynindx != -1)
|
| 3068 |
|
|
_bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
|
| 3069 |
|
|
edir->elf.dynstr_index);
|
| 3070 |
|
|
edir->elf.dynindx = eind->elf.dynindx;
|
| 3071 |
|
|
edir->elf.dynstr_index = eind->elf.dynstr_index;
|
| 3072 |
|
|
eind->elf.dynindx = -1;
|
| 3073 |
|
|
eind->elf.dynstr_index = 0;
|
| 3074 |
|
|
}
|
| 3075 |
|
|
}
|
| 3076 |
|
|
|
| 3077 |
|
|
/* Hook called by the linker routine which adds symbols from an object
|
| 3078 |
|
|
file. We use it to put .comm items in .sbss, and not .bss. */
|
| 3079 |
|
|
|
| 3080 |
|
|
static bfd_boolean
|
| 3081 |
|
|
ppc_elf_add_symbol_hook (bfd *abfd,
|
| 3082 |
|
|
struct bfd_link_info *info,
|
| 3083 |
|
|
Elf_Internal_Sym *sym,
|
| 3084 |
|
|
const char **namep ATTRIBUTE_UNUSED,
|
| 3085 |
|
|
flagword *flagsp ATTRIBUTE_UNUSED,
|
| 3086 |
|
|
asection **secp,
|
| 3087 |
|
|
bfd_vma *valp)
|
| 3088 |
|
|
{
|
| 3089 |
|
|
if (sym->st_shndx == SHN_COMMON
|
| 3090 |
|
|
&& !info->relocatable
|
| 3091 |
|
|
&& is_ppc_elf (info->output_bfd)
|
| 3092 |
|
|
&& sym->st_size <= elf_gp_size (abfd))
|
| 3093 |
|
|
{
|
| 3094 |
|
|
/* Common symbols less than or equal to -G nn bytes are automatically
|
| 3095 |
|
|
put into .sbss. */
|
| 3096 |
|
|
struct ppc_elf_link_hash_table *htab;
|
| 3097 |
|
|
|
| 3098 |
|
|
htab = ppc_elf_hash_table (info);
|
| 3099 |
|
|
if (htab->sbss == NULL)
|
| 3100 |
|
|
{
|
| 3101 |
|
|
flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
|
| 3102 |
|
|
|
| 3103 |
|
|
if (!htab->elf.dynobj)
|
| 3104 |
|
|
htab->elf.dynobj = abfd;
|
| 3105 |
|
|
|
| 3106 |
|
|
htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
|
| 3107 |
|
|
".sbss",
|
| 3108 |
|
|
flags);
|
| 3109 |
|
|
if (htab->sbss == NULL)
|
| 3110 |
|
|
return FALSE;
|
| 3111 |
|
|
}
|
| 3112 |
|
|
|
| 3113 |
|
|
*secp = htab->sbss;
|
| 3114 |
|
|
*valp = sym->st_size;
|
| 3115 |
|
|
}
|
| 3116 |
|
|
|
| 3117 |
|
|
if ((abfd->flags & DYNAMIC) == 0
|
| 3118 |
|
|
&& (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
|
| 3119 |
|
|
|| ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
|
| 3120 |
|
|
elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
|
| 3121 |
|
|
|
| 3122 |
|
|
return TRUE;
|
| 3123 |
|
|
}
|
| 3124 |
|
|
|
| 3125 |
|
|
static bfd_boolean
|
| 3126 |
|
|
create_sdata_sym (struct bfd_link_info *info, elf_linker_section_t *lsect)
|
| 3127 |
|
|
{
|
| 3128 |
|
|
struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
|
| 3129 |
|
|
|
| 3130 |
|
|
lsect->sym = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
|
| 3131 |
|
|
TRUE, FALSE, TRUE);
|
| 3132 |
|
|
if (lsect->sym == NULL)
|
| 3133 |
|
|
return FALSE;
|
| 3134 |
|
|
if (lsect->sym->root.type == bfd_link_hash_new)
|
| 3135 |
|
|
lsect->sym->non_elf = 0;
|
| 3136 |
|
|
lsect->sym->ref_regular = 1;
|
| 3137 |
|
|
_bfd_elf_link_hash_hide_symbol (info, lsect->sym, TRUE);
|
| 3138 |
|
|
return TRUE;
|
| 3139 |
|
|
}
|
| 3140 |
|
|
|
| 3141 |
|
|
/* Create a special linker section. */
|
| 3142 |
|
|
|
| 3143 |
|
|
static bfd_boolean
|
| 3144 |
|
|
ppc_elf_create_linker_section (bfd *abfd,
|
| 3145 |
|
|
struct bfd_link_info *info,
|
| 3146 |
|
|
flagword flags,
|
| 3147 |
|
|
elf_linker_section_t *lsect)
|
| 3148 |
|
|
{
|
| 3149 |
|
|
struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
|
| 3150 |
|
|
asection *s;
|
| 3151 |
|
|
|
| 3152 |
|
|
flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
|
| 3153 |
|
|
| SEC_LINKER_CREATED);
|
| 3154 |
|
|
|
| 3155 |
|
|
/* Record the first bfd that needs the special sections. */
|
| 3156 |
|
|
if (!htab->elf.dynobj)
|
| 3157 |
|
|
htab->elf.dynobj = abfd;
|
| 3158 |
|
|
|
| 3159 |
|
|
s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
|
| 3160 |
|
|
lsect->name,
|
| 3161 |
|
|
flags);
|
| 3162 |
|
|
if (s == NULL
|
| 3163 |
|
|
|| !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
|
| 3164 |
|
|
return FALSE;
|
| 3165 |
|
|
lsect->section = s;
|
| 3166 |
|
|
|
| 3167 |
|
|
return create_sdata_sym (info, lsect);
|
| 3168 |
|
|
}
|
| 3169 |
|
|
|
| 3170 |
|
|
/* Find a linker generated pointer with a given addend and type. */
|
| 3171 |
|
|
|
| 3172 |
|
|
static elf_linker_section_pointers_t *
|
| 3173 |
|
|
elf_find_pointer_linker_section
|
| 3174 |
|
|
(elf_linker_section_pointers_t *linker_pointers,
|
| 3175 |
|
|
bfd_vma addend,
|
| 3176 |
|
|
elf_linker_section_t *lsect)
|
| 3177 |
|
|
{
|
| 3178 |
|
|
for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
|
| 3179 |
|
|
if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
|
| 3180 |
|
|
return linker_pointers;
|
| 3181 |
|
|
|
| 3182 |
|
|
return NULL;
|
| 3183 |
|
|
}
|
| 3184 |
|
|
|
| 3185 |
|
|
/* Allocate a pointer to live in a linker created section. */
|
| 3186 |
|
|
|
| 3187 |
|
|
static bfd_boolean
|
| 3188 |
|
|
elf_create_pointer_linker_section (bfd *abfd,
|
| 3189 |
|
|
elf_linker_section_t *lsect,
|
| 3190 |
|
|
struct elf_link_hash_entry *h,
|
| 3191 |
|
|
const Elf_Internal_Rela *rel)
|
| 3192 |
|
|
{
|
| 3193 |
|
|
elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
|
| 3194 |
|
|
elf_linker_section_pointers_t *linker_section_ptr;
|
| 3195 |
|
|
unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
|
| 3196 |
|
|
bfd_size_type amt;
|
| 3197 |
|
|
|
| 3198 |
|
|
BFD_ASSERT (lsect != NULL);
|
| 3199 |
|
|
|
| 3200 |
|
|
/* Is this a global symbol? */
|
| 3201 |
|
|
if (h != NULL)
|
| 3202 |
|
|
{
|
| 3203 |
|
|
struct ppc_elf_link_hash_entry *eh;
|
| 3204 |
|
|
|
| 3205 |
|
|
/* Has this symbol already been allocated? If so, our work is done. */
|
| 3206 |
|
|
eh = (struct ppc_elf_link_hash_entry *) h;
|
| 3207 |
|
|
if (elf_find_pointer_linker_section (eh->linker_section_pointer,
|
| 3208 |
|
|
rel->r_addend,
|
| 3209 |
|
|
lsect))
|
| 3210 |
|
|
return TRUE;
|
| 3211 |
|
|
|
| 3212 |
|
|
ptr_linker_section_ptr = &eh->linker_section_pointer;
|
| 3213 |
|
|
}
|
| 3214 |
|
|
else
|
| 3215 |
|
|
{
|
| 3216 |
|
|
BFD_ASSERT (is_ppc_elf (abfd));
|
| 3217 |
|
|
|
| 3218 |
|
|
/* Allocation of a pointer to a local symbol. */
|
| 3219 |
|
|
elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
|
| 3220 |
|
|
|
| 3221 |
|
|
/* Allocate a table to hold the local symbols if first time. */
|
| 3222 |
|
|
if (!ptr)
|
| 3223 |
|
|
{
|
| 3224 |
|
|
unsigned int num_symbols = elf_symtab_hdr (abfd).sh_info;
|
| 3225 |
|
|
|
| 3226 |
|
|
amt = num_symbols;
|
| 3227 |
|
|
amt *= sizeof (elf_linker_section_pointers_t *);
|
| 3228 |
|
|
ptr = bfd_zalloc (abfd, amt);
|
| 3229 |
|
|
|
| 3230 |
|
|
if (!ptr)
|
| 3231 |
|
|
return FALSE;
|
| 3232 |
|
|
|
| 3233 |
|
|
elf_local_ptr_offsets (abfd) = ptr;
|
| 3234 |
|
|
}
|
| 3235 |
|
|
|
| 3236 |
|
|
/* Has this symbol already been allocated? If so, our work is done. */
|
| 3237 |
|
|
if (elf_find_pointer_linker_section (ptr[r_symndx],
|
| 3238 |
|
|
rel->r_addend,
|
| 3239 |
|
|
lsect))
|
| 3240 |
|
|
return TRUE;
|
| 3241 |
|
|
|
| 3242 |
|
|
ptr_linker_section_ptr = &ptr[r_symndx];
|
| 3243 |
|
|
}
|
| 3244 |
|
|
|
| 3245 |
|
|
/* Allocate space for a pointer in the linker section, and allocate
|
| 3246 |
|
|
a new pointer record from internal memory. */
|
| 3247 |
|
|
BFD_ASSERT (ptr_linker_section_ptr != NULL);
|
| 3248 |
|
|
amt = sizeof (elf_linker_section_pointers_t);
|
| 3249 |
|
|
linker_section_ptr = bfd_alloc (abfd, amt);
|
| 3250 |
|
|
|
| 3251 |
|
|
if (!linker_section_ptr)
|
| 3252 |
|
|
return FALSE;
|
| 3253 |
|
|
|
| 3254 |
|
|
linker_section_ptr->next = *ptr_linker_section_ptr;
|
| 3255 |
|
|
linker_section_ptr->addend = rel->r_addend;
|
| 3256 |
|
|
linker_section_ptr->lsect = lsect;
|
| 3257 |
|
|
*ptr_linker_section_ptr = linker_section_ptr;
|
| 3258 |
|
|
|
| 3259 |
|
|
linker_section_ptr->offset = lsect->section->size;
|
| 3260 |
|
|
lsect->section->size += 4;
|
| 3261 |
|
|
|
| 3262 |
|
|
#ifdef DEBUG
|
| 3263 |
|
|
fprintf (stderr,
|
| 3264 |
|
|
"Create pointer in linker section %s, offset = %ld, section size = %ld\n",
|
| 3265 |
|
|
lsect->name, (long) linker_section_ptr->offset,
|
| 3266 |
|
|
(long) lsect->section->size);
|
| 3267 |
|
|
#endif
|
| 3268 |
|
|
|
| 3269 |
|
|
return TRUE;
|
| 3270 |
|
|
}
|
| 3271 |
|
|
|
| 3272 |
|
|
static struct plt_entry **
|
| 3273 |
|
|
update_local_sym_info (bfd *abfd,
|
| 3274 |
|
|
Elf_Internal_Shdr *symtab_hdr,
|
| 3275 |
|
|
unsigned long r_symndx,
|
| 3276 |
|
|
int tls_type)
|
| 3277 |
|
|
{
|
| 3278 |
|
|
bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
|
| 3279 |
|
|
struct plt_entry **local_plt;
|
| 3280 |
|
|
char *local_got_tls_masks;
|
| 3281 |
|
|
|
| 3282 |
|
|
if (local_got_refcounts == NULL)
|
| 3283 |
|
|
{
|
| 3284 |
|
|
bfd_size_type size = symtab_hdr->sh_info;
|
| 3285 |
|
|
|
| 3286 |
|
|
size *= (sizeof (*local_got_refcounts)
|
| 3287 |
|
|
+ sizeof (*local_plt)
|
| 3288 |
|
|
+ sizeof (*local_got_tls_masks));
|
| 3289 |
|
|
local_got_refcounts = bfd_zalloc (abfd, size);
|
| 3290 |
|
|
if (local_got_refcounts == NULL)
|
| 3291 |
|
|
return NULL;
|
| 3292 |
|
|
elf_local_got_refcounts (abfd) = local_got_refcounts;
|
| 3293 |
|
|
}
|
| 3294 |
|
|
|
| 3295 |
|
|
local_plt = (struct plt_entry **) (local_got_refcounts + symtab_hdr->sh_info);
|
| 3296 |
|
|
local_got_tls_masks = (char *) (local_plt + symtab_hdr->sh_info);
|
| 3297 |
|
|
local_got_tls_masks[r_symndx] |= tls_type;
|
| 3298 |
|
|
if (tls_type != PLT_IFUNC)
|
| 3299 |
|
|
local_got_refcounts[r_symndx] += 1;
|
| 3300 |
|
|
return local_plt + r_symndx;
|
| 3301 |
|
|
}
|
| 3302 |
|
|
|
| 3303 |
|
|
static bfd_boolean
|
| 3304 |
|
|
update_plt_info (bfd *abfd, struct plt_entry **plist,
|
| 3305 |
|
|
asection *sec, bfd_vma addend)
|
| 3306 |
|
|
{
|
| 3307 |
|
|
struct plt_entry *ent;
|
| 3308 |
|
|
|
| 3309 |
|
|
if (addend < 32768)
|
| 3310 |
|
|
sec = NULL;
|
| 3311 |
|
|
for (ent = *plist; ent != NULL; ent = ent->next)
|
| 3312 |
|
|
if (ent->sec == sec && ent->addend == addend)
|
| 3313 |
|
|
break;
|
| 3314 |
|
|
if (ent == NULL)
|
| 3315 |
|
|
{
|
| 3316 |
|
|
bfd_size_type amt = sizeof (*ent);
|
| 3317 |
|
|
ent = bfd_alloc (abfd, amt);
|
| 3318 |
|
|
if (ent == NULL)
|
| 3319 |
|
|
return FALSE;
|
| 3320 |
|
|
ent->next = *plist;
|
| 3321 |
|
|
ent->sec = sec;
|
| 3322 |
|
|
ent->addend = addend;
|
| 3323 |
|
|
ent->plt.refcount = 0;
|
| 3324 |
|
|
*plist = ent;
|
| 3325 |
|
|
}
|
| 3326 |
|
|
ent->plt.refcount += 1;
|
| 3327 |
|
|
return TRUE;
|
| 3328 |
|
|
}
|
| 3329 |
|
|
|
| 3330 |
|
|
static struct plt_entry *
|
| 3331 |
|
|
find_plt_ent (struct plt_entry **plist, asection *sec, bfd_vma addend)
|
| 3332 |
|
|
{
|
| 3333 |
|
|
struct plt_entry *ent;
|
| 3334 |
|
|
|
| 3335 |
|
|
if (addend < 32768)
|
| 3336 |
|
|
sec = NULL;
|
| 3337 |
|
|
for (ent = *plist; ent != NULL; ent = ent->next)
|
| 3338 |
|
|
if (ent->sec == sec && ent->addend == addend)
|
| 3339 |
|
|
break;
|
| 3340 |
|
|
return ent;
|
| 3341 |
|
|
}
|
| 3342 |
|
|
|
| 3343 |
|
|
static bfd_boolean
|
| 3344 |
|
|
is_branch_reloc (enum elf_ppc_reloc_type r_type)
|
| 3345 |
|
|
{
|
| 3346 |
|
|
return (r_type == R_PPC_PLTREL24
|
| 3347 |
|
|
|| r_type == R_PPC_LOCAL24PC
|
| 3348 |
|
|
|| r_type == R_PPC_REL24
|
| 3349 |
|
|
|| r_type == R_PPC_REL14
|
| 3350 |
|
|
|| r_type == R_PPC_REL14_BRTAKEN
|
| 3351 |
|
|
|| r_type == R_PPC_REL14_BRNTAKEN
|
| 3352 |
|
|
|| r_type == R_PPC_ADDR24
|
| 3353 |
|
|
|| r_type == R_PPC_ADDR14
|
| 3354 |
|
|
|| r_type == R_PPC_ADDR14_BRTAKEN
|
| 3355 |
|
|
|| r_type == R_PPC_ADDR14_BRNTAKEN);
|
| 3356 |
|
|
}
|
| 3357 |
|
|
|
| 3358 |
|
|
static void
|
| 3359 |
|
|
bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
|
| 3360 |
|
|
{
|
| 3361 |
|
|
(*_bfd_error_handler)
|
| 3362 |
|
|
(_("%B: relocation %s cannot be used when making a shared object"),
|
| 3363 |
|
|
abfd,
|
| 3364 |
|
|
ppc_elf_howto_table[r_type]->name);
|
| 3365 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 3366 |
|
|
}
|
| 3367 |
|
|
|
| 3368 |
|
|
/* Look through the relocs for a section during the first phase, and
|
| 3369 |
|
|
allocate space in the global offset table or procedure linkage
|
| 3370 |
|
|
table. */
|
| 3371 |
|
|
|
| 3372 |
|
|
static bfd_boolean
|
| 3373 |
|
|
ppc_elf_check_relocs (bfd *abfd,
|
| 3374 |
|
|
struct bfd_link_info *info,
|
| 3375 |
|
|
asection *sec,
|
| 3376 |
|
|
const Elf_Internal_Rela *relocs)
|
| 3377 |
|
|
{
|
| 3378 |
|
|
struct ppc_elf_link_hash_table *htab;
|
| 3379 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 3380 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
| 3381 |
|
|
const Elf_Internal_Rela *rel;
|
| 3382 |
|
|
const Elf_Internal_Rela *rel_end;
|
| 3383 |
|
|
asection *got2, *sreloc;
|
| 3384 |
|
|
struct elf_link_hash_entry *tga;
|
| 3385 |
|
|
|
| 3386 |
|
|
if (info->relocatable)
|
| 3387 |
|
|
return TRUE;
|
| 3388 |
|
|
|
| 3389 |
|
|
/* Don't do anything special with non-loaded, non-alloced sections.
|
| 3390 |
|
|
In particular, any relocs in such sections should not affect GOT
|
| 3391 |
|
|
and PLT reference counting (ie. we don't allow them to create GOT
|
| 3392 |
|
|
or PLT entries), there's no possibility or desire to optimize TLS
|
| 3393 |
|
|
relocs, and there's not much point in propagating relocs to shared
|
| 3394 |
|
|
libs that the dynamic linker won't relocate. */
|
| 3395 |
|
|
if ((sec->flags & SEC_ALLOC) == 0)
|
| 3396 |
|
|
return TRUE;
|
| 3397 |
|
|
|
| 3398 |
|
|
#ifdef DEBUG
|
| 3399 |
|
|
_bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
|
| 3400 |
|
|
sec, abfd);
|
| 3401 |
|
|
#endif
|
| 3402 |
|
|
|
| 3403 |
|
|
BFD_ASSERT (is_ppc_elf (abfd));
|
| 3404 |
|
|
|
| 3405 |
|
|
/* Initialize howto table if not already done. */
|
| 3406 |
|
|
if (!ppc_elf_howto_table[R_PPC_ADDR32])
|
| 3407 |
|
|
ppc_elf_howto_init ();
|
| 3408 |
|
|
|
| 3409 |
|
|
htab = ppc_elf_hash_table (info);
|
| 3410 |
|
|
if (htab->glink == NULL)
|
| 3411 |
|
|
{
|
| 3412 |
|
|
if (htab->elf.dynobj == NULL)
|
| 3413 |
|
|
htab->elf.dynobj = abfd;
|
| 3414 |
|
|
if (!ppc_elf_create_glink (htab->elf.dynobj, info))
|
| 3415 |
|
|
return FALSE;
|
| 3416 |
|
|
}
|
| 3417 |
|
|
tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
|
| 3418 |
|
|
FALSE, FALSE, TRUE);
|
| 3419 |
|
|
symtab_hdr = &elf_symtab_hdr (abfd);
|
| 3420 |
|
|
sym_hashes = elf_sym_hashes (abfd);
|
| 3421 |
|
|
got2 = bfd_get_section_by_name (abfd, ".got2");
|
| 3422 |
|
|
sreloc = NULL;
|
| 3423 |
|
|
|
| 3424 |
|
|
rel_end = relocs + sec->reloc_count;
|
| 3425 |
|
|
for (rel = relocs; rel < rel_end; rel++)
|
| 3426 |
|
|
{
|
| 3427 |
|
|
unsigned long r_symndx;
|
| 3428 |
|
|
enum elf_ppc_reloc_type r_type;
|
| 3429 |
|
|
struct elf_link_hash_entry *h;
|
| 3430 |
|
|
int tls_type;
|
| 3431 |
|
|
|
| 3432 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
| 3433 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
| 3434 |
|
|
h = NULL;
|
| 3435 |
|
|
else
|
| 3436 |
|
|
{
|
| 3437 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
| 3438 |
|
|
while (h->root.type == bfd_link_hash_indirect
|
| 3439 |
|
|
|| h->root.type == bfd_link_hash_warning)
|
| 3440 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
| 3441 |
|
|
}
|
| 3442 |
|
|
|
| 3443 |
|
|
/* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
|
| 3444 |
|
|
This shows up in particular in an R_PPC_ADDR32 in the eabi
|
| 3445 |
|
|
startup code. */
|
| 3446 |
|
|
if (h != NULL
|
| 3447 |
|
|
&& htab->got == NULL
|
| 3448 |
|
|
&& strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
|
| 3449 |
|
|
{
|
| 3450 |
|
|
if (htab->elf.dynobj == NULL)
|
| 3451 |
|
|
htab->elf.dynobj = abfd;
|
| 3452 |
|
|
if (!ppc_elf_create_got (htab->elf.dynobj, info))
|
| 3453 |
|
|
return FALSE;
|
| 3454 |
|
|
BFD_ASSERT (h == htab->elf.hgot);
|
| 3455 |
|
|
}
|
| 3456 |
|
|
|
| 3457 |
|
|
tls_type = 0;
|
| 3458 |
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
| 3459 |
|
|
if (h == NULL && !htab->is_vxworks)
|
| 3460 |
|
|
{
|
| 3461 |
|
|
Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache,
|
| 3462 |
|
|
abfd, r_symndx);
|
| 3463 |
|
|
if (isym == NULL)
|
| 3464 |
|
|
return FALSE;
|
| 3465 |
|
|
|
| 3466 |
|
|
if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
|
| 3467 |
|
|
&& (!info->shared
|
| 3468 |
|
|
|| is_branch_reloc (r_type)))
|
| 3469 |
|
|
{
|
| 3470 |
|
|
struct plt_entry **ifunc;
|
| 3471 |
|
|
bfd_vma addend;
|
| 3472 |
|
|
|
| 3473 |
|
|
ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx,
|
| 3474 |
|
|
PLT_IFUNC);
|
| 3475 |
|
|
if (ifunc == NULL)
|
| 3476 |
|
|
return FALSE;
|
| 3477 |
|
|
|
| 3478 |
|
|
/* STT_GNU_IFUNC symbols must have a PLT entry;
|
| 3479 |
|
|
In a non-pie executable even when there are
|
| 3480 |
|
|
no plt calls. */
|
| 3481 |
|
|
addend = 0;
|
| 3482 |
|
|
if (r_type == R_PPC_PLTREL24)
|
| 3483 |
|
|
{
|
| 3484 |
|
|
ppc_elf_tdata (abfd)->makes_plt_call = 1;
|
| 3485 |
|
|
if (info->shared)
|
| 3486 |
|
|
addend = rel->r_addend;
|
| 3487 |
|
|
}
|
| 3488 |
|
|
if (!update_plt_info (abfd, ifunc, got2, addend))
|
| 3489 |
|
|
return FALSE;
|
| 3490 |
|
|
}
|
| 3491 |
|
|
}
|
| 3492 |
|
|
|
| 3493 |
|
|
if (!htab->is_vxworks
|
| 3494 |
|
|
&& is_branch_reloc (r_type)
|
| 3495 |
|
|
&& h != NULL
|
| 3496 |
|
|
&& h == tga)
|
| 3497 |
|
|
{
|
| 3498 |
|
|
if (rel != relocs
|
| 3499 |
|
|
&& (ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSGD
|
| 3500 |
|
|
|| ELF32_R_TYPE (rel[-1].r_info) == R_PPC_TLSLD))
|
| 3501 |
|
|
/* We have a new-style __tls_get_addr call with a marker
|
| 3502 |
|
|
reloc. */
|
| 3503 |
|
|
;
|
| 3504 |
|
|
else
|
| 3505 |
|
|
/* Mark this section as having an old-style call. */
|
| 3506 |
|
|
sec->has_tls_get_addr_call = 1;
|
| 3507 |
|
|
}
|
| 3508 |
|
|
|
| 3509 |
|
|
switch (r_type)
|
| 3510 |
|
|
{
|
| 3511 |
|
|
case R_PPC_TLSGD:
|
| 3512 |
|
|
case R_PPC_TLSLD:
|
| 3513 |
|
|
/* These special tls relocs tie a call to __tls_get_addr with
|
| 3514 |
|
|
its parameter symbol. */
|
| 3515 |
|
|
break;
|
| 3516 |
|
|
|
| 3517 |
|
|
case R_PPC_GOT_TLSLD16:
|
| 3518 |
|
|
case R_PPC_GOT_TLSLD16_LO:
|
| 3519 |
|
|
case R_PPC_GOT_TLSLD16_HI:
|
| 3520 |
|
|
case R_PPC_GOT_TLSLD16_HA:
|
| 3521 |
|
|
tls_type = TLS_TLS | TLS_LD;
|
| 3522 |
|
|
goto dogottls;
|
| 3523 |
|
|
|
| 3524 |
|
|
case R_PPC_GOT_TLSGD16:
|
| 3525 |
|
|
case R_PPC_GOT_TLSGD16_LO:
|
| 3526 |
|
|
case R_PPC_GOT_TLSGD16_HI:
|
| 3527 |
|
|
case R_PPC_GOT_TLSGD16_HA:
|
| 3528 |
|
|
tls_type = TLS_TLS | TLS_GD;
|
| 3529 |
|
|
goto dogottls;
|
| 3530 |
|
|
|
| 3531 |
|
|
case R_PPC_GOT_TPREL16:
|
| 3532 |
|
|
case R_PPC_GOT_TPREL16_LO:
|
| 3533 |
|
|
case R_PPC_GOT_TPREL16_HI:
|
| 3534 |
|
|
case R_PPC_GOT_TPREL16_HA:
|
| 3535 |
|
|
if (!info->executable)
|
| 3536 |
|
|
info->flags |= DF_STATIC_TLS;
|
| 3537 |
|
|
tls_type = TLS_TLS | TLS_TPREL;
|
| 3538 |
|
|
goto dogottls;
|
| 3539 |
|
|
|
| 3540 |
|
|
case R_PPC_GOT_DTPREL16:
|
| 3541 |
|
|
case R_PPC_GOT_DTPREL16_LO:
|
| 3542 |
|
|
case R_PPC_GOT_DTPREL16_HI:
|
| 3543 |
|
|
case R_PPC_GOT_DTPREL16_HA:
|
| 3544 |
|
|
tls_type = TLS_TLS | TLS_DTPREL;
|
| 3545 |
|
|
dogottls:
|
| 3546 |
|
|
sec->has_tls_reloc = 1;
|
| 3547 |
|
|
/* Fall thru */
|
| 3548 |
|
|
|
| 3549 |
|
|
/* GOT16 relocations */
|
| 3550 |
|
|
case R_PPC_GOT16:
|
| 3551 |
|
|
case R_PPC_GOT16_LO:
|
| 3552 |
|
|
case R_PPC_GOT16_HI:
|
| 3553 |
|
|
case R_PPC_GOT16_HA:
|
| 3554 |
|
|
/* This symbol requires a global offset table entry. */
|
| 3555 |
|
|
if (htab->got == NULL)
|
| 3556 |
|
|
{
|
| 3557 |
|
|
if (htab->elf.dynobj == NULL)
|
| 3558 |
|
|
htab->elf.dynobj = abfd;
|
| 3559 |
|
|
if (!ppc_elf_create_got (htab->elf.dynobj, info))
|
| 3560 |
|
|
return FALSE;
|
| 3561 |
|
|
}
|
| 3562 |
|
|
if (h != NULL)
|
| 3563 |
|
|
{
|
| 3564 |
|
|
h->got.refcount += 1;
|
| 3565 |
|
|
ppc_elf_hash_entry (h)->tls_mask |= tls_type;
|
| 3566 |
|
|
}
|
| 3567 |
|
|
else
|
| 3568 |
|
|
/* This is a global offset table entry for a local symbol. */
|
| 3569 |
|
|
if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
|
| 3570 |
|
|
return FALSE;
|
| 3571 |
|
|
|
| 3572 |
|
|
/* We may also need a plt entry if the symbol turns out to be
|
| 3573 |
|
|
an ifunc. */
|
| 3574 |
|
|
if (h != NULL && !info->shared)
|
| 3575 |
|
|
{
|
| 3576 |
|
|
if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
|
| 3577 |
|
|
return FALSE;
|
| 3578 |
|
|
}
|
| 3579 |
|
|
break;
|
| 3580 |
|
|
|
| 3581 |
|
|
/* Indirect .sdata relocation. */
|
| 3582 |
|
|
case R_PPC_EMB_SDAI16:
|
| 3583 |
|
|
if (info->shared)
|
| 3584 |
|
|
{
|
| 3585 |
|
|
bad_shared_reloc (abfd, r_type);
|
| 3586 |
|
|
return FALSE;
|
| 3587 |
|
|
}
|
| 3588 |
|
|
if (htab->sdata[0].section == NULL
|
| 3589 |
|
|
&& !ppc_elf_create_linker_section (abfd, info, 0,
|
| 3590 |
|
|
&htab->sdata[0]))
|
| 3591 |
|
|
return FALSE;
|
| 3592 |
|
|
if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
|
| 3593 |
|
|
h, rel))
|
| 3594 |
|
|
return FALSE;
|
| 3595 |
|
|
if (h != NULL)
|
| 3596 |
|
|
{
|
| 3597 |
|
|
ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
|
| 3598 |
|
|
h->non_got_ref = TRUE;
|
| 3599 |
|
|
}
|
| 3600 |
|
|
break;
|
| 3601 |
|
|
|
| 3602 |
|
|
/* Indirect .sdata2 relocation. */
|
| 3603 |
|
|
case R_PPC_EMB_SDA2I16:
|
| 3604 |
|
|
if (info->shared)
|
| 3605 |
|
|
{
|
| 3606 |
|
|
bad_shared_reloc (abfd, r_type);
|
| 3607 |
|
|
return FALSE;
|
| 3608 |
|
|
}
|
| 3609 |
|
|
if (htab->sdata[1].section == NULL
|
| 3610 |
|
|
&& !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
|
| 3611 |
|
|
&htab->sdata[1]))
|
| 3612 |
|
|
return FALSE;
|
| 3613 |
|
|
if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
|
| 3614 |
|
|
h, rel))
|
| 3615 |
|
|
return FALSE;
|
| 3616 |
|
|
if (h != NULL)
|
| 3617 |
|
|
{
|
| 3618 |
|
|
ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
|
| 3619 |
|
|
h->non_got_ref = TRUE;
|
| 3620 |
|
|
}
|
| 3621 |
|
|
break;
|
| 3622 |
|
|
|
| 3623 |
|
|
case R_PPC_SDAREL16:
|
| 3624 |
|
|
if (htab->sdata[0].sym == NULL
|
| 3625 |
|
|
&& !create_sdata_sym (info, &htab->sdata[0]))
|
| 3626 |
|
|
return FALSE;
|
| 3627 |
|
|
if (h != NULL)
|
| 3628 |
|
|
{
|
| 3629 |
|
|
ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
|
| 3630 |
|
|
h->non_got_ref = TRUE;
|
| 3631 |
|
|
}
|
| 3632 |
|
|
break;
|
| 3633 |
|
|
|
| 3634 |
|
|
case R_PPC_EMB_SDA2REL:
|
| 3635 |
|
|
if (info->shared)
|
| 3636 |
|
|
{
|
| 3637 |
|
|
bad_shared_reloc (abfd, r_type);
|
| 3638 |
|
|
return FALSE;
|
| 3639 |
|
|
}
|
| 3640 |
|
|
if (htab->sdata[1].sym == NULL
|
| 3641 |
|
|
&& !create_sdata_sym (info, &htab->sdata[1]))
|
| 3642 |
|
|
return FALSE;
|
| 3643 |
|
|
if (h != NULL)
|
| 3644 |
|
|
{
|
| 3645 |
|
|
ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
|
| 3646 |
|
|
h->non_got_ref = TRUE;
|
| 3647 |
|
|
}
|
| 3648 |
|
|
break;
|
| 3649 |
|
|
|
| 3650 |
|
|
case R_PPC_EMB_SDA21:
|
| 3651 |
|
|
case R_PPC_EMB_RELSDA:
|
| 3652 |
|
|
if (info->shared)
|
| 3653 |
|
|
{
|
| 3654 |
|
|
bad_shared_reloc (abfd, r_type);
|
| 3655 |
|
|
return FALSE;
|
| 3656 |
|
|
}
|
| 3657 |
|
|
if (htab->sdata[0].sym == NULL
|
| 3658 |
|
|
&& !create_sdata_sym (info, &htab->sdata[0]))
|
| 3659 |
|
|
return FALSE;
|
| 3660 |
|
|
if (htab->sdata[1].sym == NULL
|
| 3661 |
|
|
&& !create_sdata_sym (info, &htab->sdata[1]))
|
| 3662 |
|
|
return FALSE;
|
| 3663 |
|
|
if (h != NULL)
|
| 3664 |
|
|
{
|
| 3665 |
|
|
ppc_elf_hash_entry (h)->has_sda_refs = TRUE;
|
| 3666 |
|
|
h->non_got_ref = TRUE;
|
| 3667 |
|
|
}
|
| 3668 |
|
|
break;
|
| 3669 |
|
|
|
| 3670 |
|
|
case R_PPC_EMB_NADDR32:
|
| 3671 |
|
|
case R_PPC_EMB_NADDR16:
|
| 3672 |
|
|
case R_PPC_EMB_NADDR16_LO:
|
| 3673 |
|
|
case R_PPC_EMB_NADDR16_HI:
|
| 3674 |
|
|
case R_PPC_EMB_NADDR16_HA:
|
| 3675 |
|
|
if (info->shared)
|
| 3676 |
|
|
{
|
| 3677 |
|
|
bad_shared_reloc (abfd, r_type);
|
| 3678 |
|
|
return FALSE;
|
| 3679 |
|
|
}
|
| 3680 |
|
|
if (h != NULL)
|
| 3681 |
|
|
h->non_got_ref = TRUE;
|
| 3682 |
|
|
break;
|
| 3683 |
|
|
|
| 3684 |
|
|
case R_PPC_PLTREL24:
|
| 3685 |
|
|
if (h == NULL)
|
| 3686 |
|
|
break;
|
| 3687 |
|
|
/* Fall through */
|
| 3688 |
|
|
case R_PPC_PLT32:
|
| 3689 |
|
|
case R_PPC_PLTREL32:
|
| 3690 |
|
|
case R_PPC_PLT16_LO:
|
| 3691 |
|
|
case R_PPC_PLT16_HI:
|
| 3692 |
|
|
case R_PPC_PLT16_HA:
|
| 3693 |
|
|
#ifdef DEBUG
|
| 3694 |
|
|
fprintf (stderr, "Reloc requires a PLT entry\n");
|
| 3695 |
|
|
#endif
|
| 3696 |
|
|
/* This symbol requires a procedure linkage table entry. We
|
| 3697 |
|
|
actually build the entry in finish_dynamic_symbol,
|
| 3698 |
|
|
because this might be a case of linking PIC code without
|
| 3699 |
|
|
linking in any dynamic objects, in which case we don't
|
| 3700 |
|
|
need to generate a procedure linkage table after all. */
|
| 3701 |
|
|
|
| 3702 |
|
|
if (h == NULL)
|
| 3703 |
|
|
{
|
| 3704 |
|
|
/* It does not make sense to have a procedure linkage
|
| 3705 |
|
|
table entry for a local symbol. */
|
| 3706 |
161 |
khays |
info->callbacks->einfo (_("%P: %H: %s reloc against local symbol\n"),
|
| 3707 |
14 |
khays |
abfd, sec, rel->r_offset,
|
| 3708 |
|
|
ppc_elf_howto_table[r_type]->name);
|
| 3709 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 3710 |
|
|
return FALSE;
|
| 3711 |
|
|
}
|
| 3712 |
|
|
else
|
| 3713 |
|
|
{
|
| 3714 |
|
|
bfd_vma addend = 0;
|
| 3715 |
|
|
|
| 3716 |
|
|
if (r_type == R_PPC_PLTREL24)
|
| 3717 |
|
|
{
|
| 3718 |
|
|
ppc_elf_tdata (abfd)->makes_plt_call = 1;
|
| 3719 |
|
|
if (info->shared)
|
| 3720 |
|
|
addend = rel->r_addend;
|
| 3721 |
|
|
}
|
| 3722 |
|
|
h->needs_plt = 1;
|
| 3723 |
|
|
if (!update_plt_info (abfd, &h->plt.plist, got2, addend))
|
| 3724 |
|
|
return FALSE;
|
| 3725 |
|
|
}
|
| 3726 |
|
|
break;
|
| 3727 |
|
|
|
| 3728 |
|
|
/* The following relocations don't need to propagate the
|
| 3729 |
|
|
relocation if linking a shared object since they are
|
| 3730 |
|
|
section relative. */
|
| 3731 |
|
|
case R_PPC_SECTOFF:
|
| 3732 |
|
|
case R_PPC_SECTOFF_LO:
|
| 3733 |
|
|
case R_PPC_SECTOFF_HI:
|
| 3734 |
|
|
case R_PPC_SECTOFF_HA:
|
| 3735 |
|
|
case R_PPC_DTPREL16:
|
| 3736 |
|
|
case R_PPC_DTPREL16_LO:
|
| 3737 |
|
|
case R_PPC_DTPREL16_HI:
|
| 3738 |
|
|
case R_PPC_DTPREL16_HA:
|
| 3739 |
|
|
case R_PPC_TOC16:
|
| 3740 |
|
|
break;
|
| 3741 |
|
|
|
| 3742 |
|
|
case R_PPC_REL16:
|
| 3743 |
|
|
case R_PPC_REL16_LO:
|
| 3744 |
|
|
case R_PPC_REL16_HI:
|
| 3745 |
|
|
case R_PPC_REL16_HA:
|
| 3746 |
|
|
ppc_elf_tdata (abfd)->has_rel16 = 1;
|
| 3747 |
|
|
break;
|
| 3748 |
|
|
|
| 3749 |
|
|
/* These are just markers. */
|
| 3750 |
|
|
case R_PPC_TLS:
|
| 3751 |
|
|
case R_PPC_EMB_MRKREF:
|
| 3752 |
|
|
case R_PPC_NONE:
|
| 3753 |
|
|
case R_PPC_max:
|
| 3754 |
|
|
case R_PPC_RELAX:
|
| 3755 |
|
|
case R_PPC_RELAX_PLT:
|
| 3756 |
|
|
case R_PPC_RELAX_PLTREL24:
|
| 3757 |
|
|
break;
|
| 3758 |
|
|
|
| 3759 |
|
|
/* These should only appear in dynamic objects. */
|
| 3760 |
|
|
case R_PPC_COPY:
|
| 3761 |
|
|
case R_PPC_GLOB_DAT:
|
| 3762 |
|
|
case R_PPC_JMP_SLOT:
|
| 3763 |
|
|
case R_PPC_RELATIVE:
|
| 3764 |
|
|
case R_PPC_IRELATIVE:
|
| 3765 |
|
|
break;
|
| 3766 |
|
|
|
| 3767 |
|
|
/* These aren't handled yet. We'll report an error later. */
|
| 3768 |
|
|
case R_PPC_ADDR30:
|
| 3769 |
|
|
case R_PPC_EMB_RELSEC16:
|
| 3770 |
|
|
case R_PPC_EMB_RELST_LO:
|
| 3771 |
|
|
case R_PPC_EMB_RELST_HI:
|
| 3772 |
|
|
case R_PPC_EMB_RELST_HA:
|
| 3773 |
|
|
case R_PPC_EMB_BIT_FLD:
|
| 3774 |
|
|
break;
|
| 3775 |
|
|
|
| 3776 |
|
|
/* This refers only to functions defined in the shared library. */
|
| 3777 |
|
|
case R_PPC_LOCAL24PC:
|
| 3778 |
|
|
if (h != NULL && h == htab->elf.hgot && htab->plt_type == PLT_UNSET)
|
| 3779 |
|
|
{
|
| 3780 |
|
|
htab->plt_type = PLT_OLD;
|
| 3781 |
|
|
htab->old_bfd = abfd;
|
| 3782 |
|
|
}
|
| 3783 |
|
|
break;
|
| 3784 |
|
|
|
| 3785 |
|
|
/* This relocation describes the C++ object vtable hierarchy.
|
| 3786 |
|
|
Reconstruct it for later use during GC. */
|
| 3787 |
|
|
case R_PPC_GNU_VTINHERIT:
|
| 3788 |
|
|
if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
|
| 3789 |
|
|
return FALSE;
|
| 3790 |
|
|
break;
|
| 3791 |
|
|
|
| 3792 |
|
|
/* This relocation describes which C++ vtable entries are actually
|
| 3793 |
|
|
used. Record for later use during GC. */
|
| 3794 |
|
|
case R_PPC_GNU_VTENTRY:
|
| 3795 |
|
|
BFD_ASSERT (h != NULL);
|
| 3796 |
|
|
if (h != NULL
|
| 3797 |
|
|
&& !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
|
| 3798 |
|
|
return FALSE;
|
| 3799 |
|
|
break;
|
| 3800 |
|
|
|
| 3801 |
|
|
/* We shouldn't really be seeing these. */
|
| 3802 |
|
|
case R_PPC_TPREL32:
|
| 3803 |
|
|
case R_PPC_TPREL16:
|
| 3804 |
|
|
case R_PPC_TPREL16_LO:
|
| 3805 |
|
|
case R_PPC_TPREL16_HI:
|
| 3806 |
|
|
case R_PPC_TPREL16_HA:
|
| 3807 |
|
|
if (!info->executable)
|
| 3808 |
|
|
info->flags |= DF_STATIC_TLS;
|
| 3809 |
|
|
goto dodyn;
|
| 3810 |
|
|
|
| 3811 |
|
|
/* Nor these. */
|
| 3812 |
|
|
case R_PPC_DTPMOD32:
|
| 3813 |
|
|
case R_PPC_DTPREL32:
|
| 3814 |
|
|
goto dodyn;
|
| 3815 |
|
|
|
| 3816 |
|
|
case R_PPC_REL32:
|
| 3817 |
|
|
if (h == NULL
|
| 3818 |
|
|
&& got2 != NULL
|
| 3819 |
|
|
&& (sec->flags & SEC_CODE) != 0
|
| 3820 |
|
|
&& info->shared
|
| 3821 |
|
|
&& htab->plt_type == PLT_UNSET)
|
| 3822 |
|
|
{
|
| 3823 |
|
|
/* Old -fPIC gcc code has .long LCTOC1-LCFx just before
|
| 3824 |
|
|
the start of a function, which assembles to a REL32
|
| 3825 |
|
|
reference to .got2. If we detect one of these, then
|
| 3826 |
|
|
force the old PLT layout because the linker cannot
|
| 3827 |
|
|
reliably deduce the GOT pointer value needed for
|
| 3828 |
|
|
PLT call stubs. */
|
| 3829 |
|
|
asection *s;
|
| 3830 |
|
|
Elf_Internal_Sym *isym;
|
| 3831 |
|
|
|
| 3832 |
|
|
isym = bfd_sym_from_r_symndx (&htab->sym_cache,
|
| 3833 |
|
|
abfd, r_symndx);
|
| 3834 |
|
|
if (isym == NULL)
|
| 3835 |
|
|
return FALSE;
|
| 3836 |
|
|
|
| 3837 |
|
|
s = bfd_section_from_elf_index (abfd, isym->st_shndx);
|
| 3838 |
|
|
if (s == got2)
|
| 3839 |
|
|
{
|
| 3840 |
|
|
htab->plt_type = PLT_OLD;
|
| 3841 |
|
|
htab->old_bfd = abfd;
|
| 3842 |
|
|
}
|
| 3843 |
|
|
}
|
| 3844 |
|
|
if (h == NULL || h == htab->elf.hgot)
|
| 3845 |
|
|
break;
|
| 3846 |
|
|
/* fall through */
|
| 3847 |
|
|
|
| 3848 |
|
|
case R_PPC_ADDR32:
|
| 3849 |
|
|
case R_PPC_ADDR16:
|
| 3850 |
|
|
case R_PPC_ADDR16_LO:
|
| 3851 |
|
|
case R_PPC_ADDR16_HI:
|
| 3852 |
|
|
case R_PPC_ADDR16_HA:
|
| 3853 |
|
|
case R_PPC_UADDR32:
|
| 3854 |
|
|
case R_PPC_UADDR16:
|
| 3855 |
|
|
if (h != NULL && !info->shared)
|
| 3856 |
|
|
{
|
| 3857 |
|
|
/* We may need a plt entry if the symbol turns out to be
|
| 3858 |
|
|
a function defined in a dynamic object. */
|
| 3859 |
|
|
if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
|
| 3860 |
|
|
return FALSE;
|
| 3861 |
|
|
|
| 3862 |
|
|
/* We may need a copy reloc too. */
|
| 3863 |
|
|
h->non_got_ref = 1;
|
| 3864 |
|
|
h->pointer_equality_needed = 1;
|
| 3865 |
|
|
}
|
| 3866 |
|
|
goto dodyn;
|
| 3867 |
|
|
|
| 3868 |
|
|
case R_PPC_REL24:
|
| 3869 |
|
|
case R_PPC_REL14:
|
| 3870 |
|
|
case R_PPC_REL14_BRTAKEN:
|
| 3871 |
|
|
case R_PPC_REL14_BRNTAKEN:
|
| 3872 |
|
|
if (h == NULL)
|
| 3873 |
|
|
break;
|
| 3874 |
|
|
if (h == htab->elf.hgot)
|
| 3875 |
|
|
{
|
| 3876 |
|
|
if (htab->plt_type == PLT_UNSET)
|
| 3877 |
|
|
{
|
| 3878 |
|
|
htab->plt_type = PLT_OLD;
|
| 3879 |
|
|
htab->old_bfd = abfd;
|
| 3880 |
|
|
}
|
| 3881 |
|
|
break;
|
| 3882 |
|
|
}
|
| 3883 |
|
|
/* fall through */
|
| 3884 |
|
|
|
| 3885 |
|
|
case R_PPC_ADDR24:
|
| 3886 |
|
|
case R_PPC_ADDR14:
|
| 3887 |
|
|
case R_PPC_ADDR14_BRTAKEN:
|
| 3888 |
|
|
case R_PPC_ADDR14_BRNTAKEN:
|
| 3889 |
|
|
if (h != NULL && !info->shared)
|
| 3890 |
|
|
{
|
| 3891 |
|
|
/* We may need a plt entry if the symbol turns out to be
|
| 3892 |
|
|
a function defined in a dynamic object. */
|
| 3893 |
|
|
h->needs_plt = 1;
|
| 3894 |
|
|
if (!update_plt_info (abfd, &h->plt.plist, NULL, 0))
|
| 3895 |
|
|
return FALSE;
|
| 3896 |
|
|
break;
|
| 3897 |
|
|
}
|
| 3898 |
|
|
|
| 3899 |
|
|
dodyn:
|
| 3900 |
|
|
/* If we are creating a shared library, and this is a reloc
|
| 3901 |
|
|
against a global symbol, or a non PC relative reloc
|
| 3902 |
|
|
against a local symbol, then we need to copy the reloc
|
| 3903 |
|
|
into the shared library. However, if we are linking with
|
| 3904 |
|
|
-Bsymbolic, we do not need to copy a reloc against a
|
| 3905 |
|
|
global symbol which is defined in an object we are
|
| 3906 |
|
|
including in the link (i.e., DEF_REGULAR is set). At
|
| 3907 |
|
|
this point we have not seen all the input files, so it is
|
| 3908 |
|
|
possible that DEF_REGULAR is not set now but will be set
|
| 3909 |
|
|
later (it is never cleared). In case of a weak definition,
|
| 3910 |
|
|
DEF_REGULAR may be cleared later by a strong definition in
|
| 3911 |
|
|
a shared library. We account for that possibility below by
|
| 3912 |
|
|
storing information in the dyn_relocs field of the hash
|
| 3913 |
|
|
table entry. A similar situation occurs when creating
|
| 3914 |
|
|
shared libraries and symbol visibility changes render the
|
| 3915 |
|
|
symbol local.
|
| 3916 |
|
|
|
| 3917 |
|
|
If on the other hand, we are creating an executable, we
|
| 3918 |
|
|
may need to keep relocations for symbols satisfied by a
|
| 3919 |
|
|
dynamic library if we manage to avoid copy relocs for the
|
| 3920 |
|
|
symbol. */
|
| 3921 |
|
|
if ((info->shared
|
| 3922 |
|
|
&& (must_be_dyn_reloc (info, r_type)
|
| 3923 |
|
|
|| (h != NULL
|
| 3924 |
|
|
&& (! info->symbolic
|
| 3925 |
|
|
|| h->root.type == bfd_link_hash_defweak
|
| 3926 |
|
|
|| !h->def_regular))))
|
| 3927 |
|
|
|| (ELIMINATE_COPY_RELOCS
|
| 3928 |
|
|
&& !info->shared
|
| 3929 |
|
|
&& h != NULL
|
| 3930 |
|
|
&& (h->root.type == bfd_link_hash_defweak
|
| 3931 |
|
|
|| !h->def_regular)))
|
| 3932 |
|
|
{
|
| 3933 |
|
|
struct elf_dyn_relocs *p;
|
| 3934 |
|
|
struct elf_dyn_relocs **rel_head;
|
| 3935 |
|
|
|
| 3936 |
|
|
#ifdef DEBUG
|
| 3937 |
|
|
fprintf (stderr,
|
| 3938 |
|
|
"ppc_elf_check_relocs needs to "
|
| 3939 |
|
|
"create relocation for %s\n",
|
| 3940 |
|
|
(h && h->root.root.string
|
| 3941 |
|
|
? h->root.root.string : "<unknown>"));
|
| 3942 |
|
|
#endif
|
| 3943 |
|
|
if (sreloc == NULL)
|
| 3944 |
|
|
{
|
| 3945 |
|
|
if (htab->elf.dynobj == NULL)
|
| 3946 |
|
|
htab->elf.dynobj = abfd;
|
| 3947 |
|
|
|
| 3948 |
|
|
sreloc = _bfd_elf_make_dynamic_reloc_section
|
| 3949 |
|
|
(sec, htab->elf.dynobj, 2, abfd, /*rela?*/ TRUE);
|
| 3950 |
|
|
|
| 3951 |
|
|
if (sreloc == NULL)
|
| 3952 |
|
|
return FALSE;
|
| 3953 |
|
|
}
|
| 3954 |
|
|
|
| 3955 |
|
|
/* If this is a global symbol, we count the number of
|
| 3956 |
|
|
relocations we need for this symbol. */
|
| 3957 |
|
|
if (h != NULL)
|
| 3958 |
|
|
{
|
| 3959 |
|
|
rel_head = &ppc_elf_hash_entry (h)->dyn_relocs;
|
| 3960 |
|
|
}
|
| 3961 |
|
|
else
|
| 3962 |
|
|
{
|
| 3963 |
|
|
/* Track dynamic relocs needed for local syms too.
|
| 3964 |
|
|
We really need local syms available to do this
|
| 3965 |
|
|
easily. Oh well. */
|
| 3966 |
|
|
asection *s;
|
| 3967 |
|
|
void *vpp;
|
| 3968 |
|
|
Elf_Internal_Sym *isym;
|
| 3969 |
|
|
|
| 3970 |
|
|
isym = bfd_sym_from_r_symndx (&htab->sym_cache,
|
| 3971 |
|
|
abfd, r_symndx);
|
| 3972 |
|
|
if (isym == NULL)
|
| 3973 |
|
|
return FALSE;
|
| 3974 |
|
|
|
| 3975 |
|
|
s = bfd_section_from_elf_index (abfd, isym->st_shndx);
|
| 3976 |
|
|
if (s == NULL)
|
| 3977 |
|
|
s = sec;
|
| 3978 |
|
|
|
| 3979 |
|
|
vpp = &elf_section_data (s)->local_dynrel;
|
| 3980 |
|
|
rel_head = (struct elf_dyn_relocs **) vpp;
|
| 3981 |
|
|
}
|
| 3982 |
|
|
|
| 3983 |
|
|
p = *rel_head;
|
| 3984 |
|
|
if (p == NULL || p->sec != sec)
|
| 3985 |
|
|
{
|
| 3986 |
|
|
p = bfd_alloc (htab->elf.dynobj, sizeof *p);
|
| 3987 |
|
|
if (p == NULL)
|
| 3988 |
|
|
return FALSE;
|
| 3989 |
|
|
p->next = *rel_head;
|
| 3990 |
|
|
*rel_head = p;
|
| 3991 |
|
|
p->sec = sec;
|
| 3992 |
|
|
p->count = 0;
|
| 3993 |
|
|
p->pc_count = 0;
|
| 3994 |
|
|
}
|
| 3995 |
|
|
|
| 3996 |
|
|
p->count += 1;
|
| 3997 |
|
|
if (!must_be_dyn_reloc (info, r_type))
|
| 3998 |
|
|
p->pc_count += 1;
|
| 3999 |
|
|
}
|
| 4000 |
|
|
|
| 4001 |
|
|
break;
|
| 4002 |
|
|
}
|
| 4003 |
|
|
}
|
| 4004 |
|
|
|
| 4005 |
|
|
return TRUE;
|
| 4006 |
|
|
}
|
| 4007 |
|
|
|
| 4008 |
|
|
|
| 4009 |
|
|
/* Merge object attributes from IBFD into OBFD. Raise an error if
|
| 4010 |
|
|
there are conflicting attributes. */
|
| 4011 |
|
|
static bfd_boolean
|
| 4012 |
|
|
ppc_elf_merge_obj_attributes (bfd *ibfd, bfd *obfd)
|
| 4013 |
|
|
{
|
| 4014 |
|
|
obj_attribute *in_attr, *in_attrs;
|
| 4015 |
|
|
obj_attribute *out_attr, *out_attrs;
|
| 4016 |
|
|
|
| 4017 |
|
|
if (!elf_known_obj_attributes_proc (obfd)[0].i)
|
| 4018 |
|
|
{
|
| 4019 |
|
|
/* This is the first object. Copy the attributes. */
|
| 4020 |
|
|
_bfd_elf_copy_obj_attributes (ibfd, obfd);
|
| 4021 |
|
|
|
| 4022 |
|
|
/* Use the Tag_null value to indicate the attributes have been
|
| 4023 |
|
|
initialized. */
|
| 4024 |
|
|
elf_known_obj_attributes_proc (obfd)[0].i = 1;
|
| 4025 |
|
|
|
| 4026 |
|
|
return TRUE;
|
| 4027 |
|
|
}
|
| 4028 |
|
|
|
| 4029 |
|
|
in_attrs = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
|
| 4030 |
|
|
out_attrs = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
|
| 4031 |
|
|
|
| 4032 |
|
|
/* Check for conflicting Tag_GNU_Power_ABI_FP attributes and merge
|
| 4033 |
|
|
non-conflicting ones. */
|
| 4034 |
|
|
in_attr = &in_attrs[Tag_GNU_Power_ABI_FP];
|
| 4035 |
|
|
out_attr = &out_attrs[Tag_GNU_Power_ABI_FP];
|
| 4036 |
|
|
if (in_attr->i != out_attr->i)
|
| 4037 |
|
|
{
|
| 4038 |
|
|
out_attr->type = 1;
|
| 4039 |
|
|
if (out_attr->i == 0)
|
| 4040 |
|
|
out_attr->i = in_attr->i;
|
| 4041 |
|
|
else if (in_attr->i == 0)
|
| 4042 |
|
|
;
|
| 4043 |
|
|
else if (out_attr->i == 1 && in_attr->i == 2)
|
| 4044 |
|
|
_bfd_error_handler
|
| 4045 |
|
|
(_("Warning: %B uses hard float, %B uses soft float"), obfd, ibfd);
|
| 4046 |
|
|
else if (out_attr->i == 1 && in_attr->i == 3)
|
| 4047 |
|
|
_bfd_error_handler
|
| 4048 |
|
|
(_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
|
| 4049 |
|
|
obfd, ibfd);
|
| 4050 |
|
|
else if (out_attr->i == 3 && in_attr->i == 1)
|
| 4051 |
|
|
_bfd_error_handler
|
| 4052 |
|
|
(_("Warning: %B uses double-precision hard float, %B uses single-precision hard float"),
|
| 4053 |
|
|
ibfd, obfd);
|
| 4054 |
|
|
else if (out_attr->i == 3 && in_attr->i == 2)
|
| 4055 |
|
|
_bfd_error_handler
|
| 4056 |
|
|
(_("Warning: %B uses soft float, %B uses single-precision hard float"),
|
| 4057 |
|
|
ibfd, obfd);
|
| 4058 |
|
|
else if (out_attr->i == 2 && (in_attr->i == 1 || in_attr->i == 3))
|
| 4059 |
|
|
_bfd_error_handler
|
| 4060 |
|
|
(_("Warning: %B uses hard float, %B uses soft float"), ibfd, obfd);
|
| 4061 |
|
|
else if (in_attr->i > 3)
|
| 4062 |
|
|
_bfd_error_handler
|
| 4063 |
|
|
(_("Warning: %B uses unknown floating point ABI %d"), ibfd,
|
| 4064 |
|
|
in_attr->i);
|
| 4065 |
|
|
else
|
| 4066 |
|
|
_bfd_error_handler
|
| 4067 |
|
|
(_("Warning: %B uses unknown floating point ABI %d"), obfd,
|
| 4068 |
|
|
out_attr->i);
|
| 4069 |
|
|
}
|
| 4070 |
|
|
|
| 4071 |
|
|
/* Check for conflicting Tag_GNU_Power_ABI_Vector attributes and
|
| 4072 |
|
|
merge non-conflicting ones. */
|
| 4073 |
|
|
in_attr = &in_attrs[Tag_GNU_Power_ABI_Vector];
|
| 4074 |
|
|
out_attr = &out_attrs[Tag_GNU_Power_ABI_Vector];
|
| 4075 |
|
|
if (in_attr->i != out_attr->i)
|
| 4076 |
|
|
{
|
| 4077 |
|
|
const char *in_abi = NULL, *out_abi = NULL;
|
| 4078 |
|
|
|
| 4079 |
|
|
switch (in_attr->i)
|
| 4080 |
|
|
{
|
| 4081 |
|
|
case 1: in_abi = "generic"; break;
|
| 4082 |
|
|
case 2: in_abi = "AltiVec"; break;
|
| 4083 |
|
|
case 3: in_abi = "SPE"; break;
|
| 4084 |
|
|
}
|
| 4085 |
|
|
|
| 4086 |
|
|
switch (out_attr->i)
|
| 4087 |
|
|
{
|
| 4088 |
|
|
case 1: out_abi = "generic"; break;
|
| 4089 |
|
|
case 2: out_abi = "AltiVec"; break;
|
| 4090 |
|
|
case 3: out_abi = "SPE"; break;
|
| 4091 |
|
|
}
|
| 4092 |
|
|
|
| 4093 |
|
|
out_attr->type = 1;
|
| 4094 |
|
|
if (out_attr->i == 0)
|
| 4095 |
|
|
out_attr->i = in_attr->i;
|
| 4096 |
|
|
else if (in_attr->i == 0)
|
| 4097 |
|
|
;
|
| 4098 |
|
|
/* For now, allow generic to transition to AltiVec or SPE
|
| 4099 |
|
|
without a warning. If GCC marked files with their stack
|
| 4100 |
|
|
alignment and used don't-care markings for files which are
|
| 4101 |
|
|
not affected by the vector ABI, we could warn about this
|
| 4102 |
|
|
case too. */
|
| 4103 |
|
|
else if (out_attr->i == 1)
|
| 4104 |
|
|
out_attr->i = in_attr->i;
|
| 4105 |
|
|
else if (in_attr->i == 1)
|
| 4106 |
|
|
;
|
| 4107 |
|
|
else if (in_abi == NULL)
|
| 4108 |
|
|
_bfd_error_handler
|
| 4109 |
|
|
(_("Warning: %B uses unknown vector ABI %d"), ibfd,
|
| 4110 |
|
|
in_attr->i);
|
| 4111 |
|
|
else if (out_abi == NULL)
|
| 4112 |
|
|
_bfd_error_handler
|
| 4113 |
|
|
(_("Warning: %B uses unknown vector ABI %d"), obfd,
|
| 4114 |
|
|
in_attr->i);
|
| 4115 |
|
|
else
|
| 4116 |
|
|
_bfd_error_handler
|
| 4117 |
|
|
(_("Warning: %B uses vector ABI \"%s\", %B uses \"%s\""),
|
| 4118 |
|
|
ibfd, obfd, in_abi, out_abi);
|
| 4119 |
|
|
}
|
| 4120 |
|
|
|
| 4121 |
|
|
/* Check for conflicting Tag_GNU_Power_ABI_Struct_Return attributes
|
| 4122 |
|
|
and merge non-conflicting ones. */
|
| 4123 |
|
|
in_attr = &in_attrs[Tag_GNU_Power_ABI_Struct_Return];
|
| 4124 |
|
|
out_attr = &out_attrs[Tag_GNU_Power_ABI_Struct_Return];
|
| 4125 |
|
|
if (in_attr->i != out_attr->i)
|
| 4126 |
|
|
{
|
| 4127 |
|
|
out_attr->type = 1;
|
| 4128 |
|
|
if (out_attr->i == 0)
|
| 4129 |
|
|
out_attr->i = in_attr->i;
|
| 4130 |
|
|
else if (in_attr->i == 0)
|
| 4131 |
|
|
;
|
| 4132 |
|
|
else if (out_attr->i == 1 && in_attr->i == 2)
|
| 4133 |
|
|
_bfd_error_handler
|
| 4134 |
|
|
(_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), obfd, ibfd);
|
| 4135 |
|
|
else if (out_attr->i == 2 && in_attr->i == 1)
|
| 4136 |
|
|
_bfd_error_handler
|
| 4137 |
|
|
(_("Warning: %B uses r3/r4 for small structure returns, %B uses memory"), ibfd, obfd);
|
| 4138 |
|
|
else if (in_attr->i > 2)
|
| 4139 |
|
|
_bfd_error_handler
|
| 4140 |
|
|
(_("Warning: %B uses unknown small structure return convention %d"), ibfd,
|
| 4141 |
|
|
in_attr->i);
|
| 4142 |
|
|
else
|
| 4143 |
|
|
_bfd_error_handler
|
| 4144 |
|
|
(_("Warning: %B uses unknown small structure return convention %d"), obfd,
|
| 4145 |
|
|
out_attr->i);
|
| 4146 |
|
|
}
|
| 4147 |
|
|
|
| 4148 |
|
|
/* Merge Tag_compatibility attributes and any common GNU ones. */
|
| 4149 |
|
|
_bfd_elf_merge_object_attributes (ibfd, obfd);
|
| 4150 |
|
|
|
| 4151 |
|
|
return TRUE;
|
| 4152 |
|
|
}
|
| 4153 |
|
|
|
| 4154 |
|
|
/* Merge backend specific data from an object file to the output
|
| 4155 |
|
|
object file when linking. */
|
| 4156 |
|
|
|
| 4157 |
|
|
static bfd_boolean
|
| 4158 |
|
|
ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
|
| 4159 |
|
|
{
|
| 4160 |
|
|
flagword old_flags;
|
| 4161 |
|
|
flagword new_flags;
|
| 4162 |
|
|
bfd_boolean error;
|
| 4163 |
|
|
|
| 4164 |
|
|
if (!is_ppc_elf (ibfd) || !is_ppc_elf (obfd))
|
| 4165 |
|
|
return TRUE;
|
| 4166 |
|
|
|
| 4167 |
|
|
/* Check if we have the same endianness. */
|
| 4168 |
|
|
if (! _bfd_generic_verify_endian_match (ibfd, obfd))
|
| 4169 |
|
|
return FALSE;
|
| 4170 |
|
|
|
| 4171 |
|
|
if (!ppc_elf_merge_obj_attributes (ibfd, obfd))
|
| 4172 |
|
|
return FALSE;
|
| 4173 |
|
|
|
| 4174 |
|
|
new_flags = elf_elfheader (ibfd)->e_flags;
|
| 4175 |
|
|
old_flags = elf_elfheader (obfd)->e_flags;
|
| 4176 |
|
|
if (!elf_flags_init (obfd))
|
| 4177 |
|
|
{
|
| 4178 |
|
|
/* First call, no flags set. */
|
| 4179 |
|
|
elf_flags_init (obfd) = TRUE;
|
| 4180 |
|
|
elf_elfheader (obfd)->e_flags = new_flags;
|
| 4181 |
|
|
}
|
| 4182 |
|
|
|
| 4183 |
|
|
/* Compatible flags are ok. */
|
| 4184 |
|
|
else if (new_flags == old_flags)
|
| 4185 |
|
|
;
|
| 4186 |
|
|
|
| 4187 |
|
|
/* Incompatible flags. */
|
| 4188 |
|
|
else
|
| 4189 |
|
|
{
|
| 4190 |
|
|
/* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
|
| 4191 |
|
|
to be linked with either. */
|
| 4192 |
|
|
error = FALSE;
|
| 4193 |
|
|
if ((new_flags & EF_PPC_RELOCATABLE) != 0
|
| 4194 |
|
|
&& (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
|
| 4195 |
|
|
{
|
| 4196 |
|
|
error = TRUE;
|
| 4197 |
|
|
(*_bfd_error_handler)
|
| 4198 |
|
|
(_("%B: compiled with -mrelocatable and linked with "
|
| 4199 |
|
|
"modules compiled normally"), ibfd);
|
| 4200 |
|
|
}
|
| 4201 |
|
|
else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
|
| 4202 |
|
|
&& (old_flags & EF_PPC_RELOCATABLE) != 0)
|
| 4203 |
|
|
{
|
| 4204 |
|
|
error = TRUE;
|
| 4205 |
|
|
(*_bfd_error_handler)
|
| 4206 |
|
|
(_("%B: compiled normally and linked with "
|
| 4207 |
|
|
"modules compiled with -mrelocatable"), ibfd);
|
| 4208 |
|
|
}
|
| 4209 |
|
|
|
| 4210 |
|
|
/* The output is -mrelocatable-lib iff both the input files are. */
|
| 4211 |
|
|
if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
|
| 4212 |
|
|
elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
|
| 4213 |
|
|
|
| 4214 |
|
|
/* The output is -mrelocatable iff it can't be -mrelocatable-lib,
|
| 4215 |
|
|
but each input file is either -mrelocatable or -mrelocatable-lib. */
|
| 4216 |
|
|
if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
|
| 4217 |
|
|
&& (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
|
| 4218 |
|
|
&& (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
|
| 4219 |
|
|
elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
|
| 4220 |
|
|
|
| 4221 |
|
|
/* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
|
| 4222 |
|
|
any module uses it. */
|
| 4223 |
|
|
elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
|
| 4224 |
|
|
|
| 4225 |
|
|
new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
|
| 4226 |
|
|
old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
|
| 4227 |
|
|
|
| 4228 |
|
|
/* Warn about any other mismatches. */
|
| 4229 |
|
|
if (new_flags != old_flags)
|
| 4230 |
|
|
{
|
| 4231 |
|
|
error = TRUE;
|
| 4232 |
|
|
(*_bfd_error_handler)
|
| 4233 |
|
|
(_("%B: uses different e_flags (0x%lx) fields "
|
| 4234 |
|
|
"than previous modules (0x%lx)"),
|
| 4235 |
|
|
ibfd, (long) new_flags, (long) old_flags);
|
| 4236 |
|
|
}
|
| 4237 |
|
|
|
| 4238 |
|
|
if (error)
|
| 4239 |
|
|
{
|
| 4240 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 4241 |
|
|
return FALSE;
|
| 4242 |
|
|
}
|
| 4243 |
|
|
}
|
| 4244 |
|
|
|
| 4245 |
|
|
return TRUE;
|
| 4246 |
|
|
}
|
| 4247 |
|
|
|
| 4248 |
|
|
/* Choose which PLT scheme to use, and set .plt flags appropriately.
|
| 4249 |
|
|
Returns -1 on error, 0 for old PLT, 1 for new PLT. */
|
| 4250 |
|
|
int
|
| 4251 |
|
|
ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
|
| 4252 |
|
|
struct bfd_link_info *info,
|
| 4253 |
|
|
enum ppc_elf_plt_type plt_style,
|
| 4254 |
|
|
int emit_stub_syms)
|
| 4255 |
|
|
{
|
| 4256 |
|
|
struct ppc_elf_link_hash_table *htab;
|
| 4257 |
|
|
flagword flags;
|
| 4258 |
|
|
|
| 4259 |
|
|
htab = ppc_elf_hash_table (info);
|
| 4260 |
|
|
|
| 4261 |
|
|
htab->emit_stub_syms = emit_stub_syms;
|
| 4262 |
|
|
|
| 4263 |
|
|
if (htab->plt_type == PLT_UNSET)
|
| 4264 |
|
|
{
|
| 4265 |
161 |
khays |
struct elf_link_hash_entry *h;
|
| 4266 |
|
|
|
| 4267 |
14 |
khays |
if (plt_style == PLT_OLD)
|
| 4268 |
|
|
htab->plt_type = PLT_OLD;
|
| 4269 |
161 |
khays |
else if (info->shared
|
| 4270 |
|
|
&& htab->elf.dynamic_sections_created
|
| 4271 |
|
|
&& (h = elf_link_hash_lookup (&htab->elf, "_mcount",
|
| 4272 |
|
|
FALSE, FALSE, TRUE)) != NULL
|
| 4273 |
|
|
&& (h->type == STT_FUNC
|
| 4274 |
|
|
|| h->needs_plt)
|
| 4275 |
|
|
&& h->ref_regular
|
| 4276 |
|
|
&& !(SYMBOL_CALLS_LOCAL (info, h)
|
| 4277 |
|
|
|| (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
|
| 4278 |
|
|
&& h->root.type == bfd_link_hash_undefweak)))
|
| 4279 |
|
|
{
|
| 4280 |
|
|
/* Profiling of shared libs (and pies) is not supported with
|
| 4281 |
|
|
secure plt, because ppc32 does profiling before a
|
| 4282 |
|
|
function prologue and a secure plt pic call stubs needs
|
| 4283 |
|
|
r30 to be set up. */
|
| 4284 |
|
|
htab->plt_type = PLT_OLD;
|
| 4285 |
|
|
}
|
| 4286 |
14 |
khays |
else
|
| 4287 |
|
|
{
|
| 4288 |
|
|
bfd *ibfd;
|
| 4289 |
|
|
enum ppc_elf_plt_type plt_type = plt_style;
|
| 4290 |
|
|
|
| 4291 |
|
|
/* Look through the reloc flags left by ppc_elf_check_relocs.
|
| 4292 |
|
|
Use the old style bss plt if a file makes plt calls
|
| 4293 |
|
|
without using the new relocs, and if ld isn't given
|
| 4294 |
|
|
--secure-plt and we never see REL16 relocs. */
|
| 4295 |
|
|
if (plt_type == PLT_UNSET)
|
| 4296 |
|
|
plt_type = PLT_OLD;
|
| 4297 |
|
|
for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
|
| 4298 |
|
|
if (is_ppc_elf (ibfd))
|
| 4299 |
|
|
{
|
| 4300 |
|
|
if (ppc_elf_tdata (ibfd)->has_rel16)
|
| 4301 |
|
|
plt_type = PLT_NEW;
|
| 4302 |
|
|
else if (ppc_elf_tdata (ibfd)->makes_plt_call)
|
| 4303 |
|
|
{
|
| 4304 |
|
|
plt_type = PLT_OLD;
|
| 4305 |
|
|
htab->old_bfd = ibfd;
|
| 4306 |
|
|
break;
|
| 4307 |
|
|
}
|
| 4308 |
|
|
}
|
| 4309 |
|
|
htab->plt_type = plt_type;
|
| 4310 |
|
|
}
|
| 4311 |
|
|
}
|
| 4312 |
|
|
if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
|
| 4313 |
161 |
khays |
{
|
| 4314 |
|
|
if (htab->old_bfd != NULL)
|
| 4315 |
|
|
info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
|
| 4316 |
|
|
htab->old_bfd);
|
| 4317 |
|
|
else
|
| 4318 |
|
|
info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
|
| 4319 |
|
|
}
|
| 4320 |
14 |
khays |
|
| 4321 |
|
|
BFD_ASSERT (htab->plt_type != PLT_VXWORKS);
|
| 4322 |
|
|
|
| 4323 |
|
|
if (htab->plt_type == PLT_NEW)
|
| 4324 |
|
|
{
|
| 4325 |
|
|
flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
|
| 4326 |
|
|
| SEC_IN_MEMORY | SEC_LINKER_CREATED);
|
| 4327 |
|
|
|
| 4328 |
|
|
/* The new PLT is a loaded section. */
|
| 4329 |
|
|
if (htab->plt != NULL
|
| 4330 |
|
|
&& !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
|
| 4331 |
|
|
return -1;
|
| 4332 |
|
|
|
| 4333 |
|
|
/* The new GOT is not executable. */
|
| 4334 |
|
|
if (htab->got != NULL
|
| 4335 |
|
|
&& !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
|
| 4336 |
|
|
return -1;
|
| 4337 |
|
|
}
|
| 4338 |
|
|
else
|
| 4339 |
|
|
{
|
| 4340 |
|
|
/* Stop an unused .glink section from affecting .text alignment. */
|
| 4341 |
|
|
if (htab->glink != NULL
|
| 4342 |
|
|
&& !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
|
| 4343 |
|
|
return -1;
|
| 4344 |
|
|
}
|
| 4345 |
|
|
return htab->plt_type == PLT_NEW;
|
| 4346 |
|
|
}
|
| 4347 |
|
|
|
| 4348 |
|
|
/* Return the section that should be marked against GC for a given
|
| 4349 |
|
|
relocation. */
|
| 4350 |
|
|
|
| 4351 |
|
|
static asection *
|
| 4352 |
|
|
ppc_elf_gc_mark_hook (asection *sec,
|
| 4353 |
|
|
struct bfd_link_info *info,
|
| 4354 |
|
|
Elf_Internal_Rela *rel,
|
| 4355 |
|
|
struct elf_link_hash_entry *h,
|
| 4356 |
|
|
Elf_Internal_Sym *sym)
|
| 4357 |
|
|
{
|
| 4358 |
|
|
if (h != NULL)
|
| 4359 |
|
|
switch (ELF32_R_TYPE (rel->r_info))
|
| 4360 |
|
|
{
|
| 4361 |
|
|
case R_PPC_GNU_VTINHERIT:
|
| 4362 |
|
|
case R_PPC_GNU_VTENTRY:
|
| 4363 |
|
|
return NULL;
|
| 4364 |
|
|
}
|
| 4365 |
|
|
|
| 4366 |
|
|
return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
|
| 4367 |
|
|
}
|
| 4368 |
|
|
|
| 4369 |
|
|
/* Update the got, plt and dynamic reloc reference counts for the
|
| 4370 |
|
|
section being removed. */
|
| 4371 |
|
|
|
| 4372 |
|
|
static bfd_boolean
|
| 4373 |
|
|
ppc_elf_gc_sweep_hook (bfd *abfd,
|
| 4374 |
|
|
struct bfd_link_info *info,
|
| 4375 |
|
|
asection *sec,
|
| 4376 |
|
|
const Elf_Internal_Rela *relocs)
|
| 4377 |
|
|
{
|
| 4378 |
|
|
struct ppc_elf_link_hash_table *htab;
|
| 4379 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 4380 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
| 4381 |
|
|
bfd_signed_vma *local_got_refcounts;
|
| 4382 |
|
|
const Elf_Internal_Rela *rel, *relend;
|
| 4383 |
|
|
asection *got2;
|
| 4384 |
|
|
|
| 4385 |
|
|
if (info->relocatable)
|
| 4386 |
|
|
return TRUE;
|
| 4387 |
|
|
|
| 4388 |
|
|
if ((sec->flags & SEC_ALLOC) == 0)
|
| 4389 |
|
|
return TRUE;
|
| 4390 |
|
|
|
| 4391 |
|
|
elf_section_data (sec)->local_dynrel = NULL;
|
| 4392 |
|
|
|
| 4393 |
|
|
htab = ppc_elf_hash_table (info);
|
| 4394 |
|
|
symtab_hdr = &elf_symtab_hdr (abfd);
|
| 4395 |
|
|
sym_hashes = elf_sym_hashes (abfd);
|
| 4396 |
|
|
local_got_refcounts = elf_local_got_refcounts (abfd);
|
| 4397 |
|
|
got2 = bfd_get_section_by_name (abfd, ".got2");
|
| 4398 |
|
|
|
| 4399 |
|
|
relend = relocs + sec->reloc_count;
|
| 4400 |
|
|
for (rel = relocs; rel < relend; rel++)
|
| 4401 |
|
|
{
|
| 4402 |
|
|
unsigned long r_symndx;
|
| 4403 |
|
|
enum elf_ppc_reloc_type r_type;
|
| 4404 |
|
|
struct elf_link_hash_entry *h = NULL;
|
| 4405 |
|
|
|
| 4406 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
| 4407 |
|
|
if (r_symndx >= symtab_hdr->sh_info)
|
| 4408 |
|
|
{
|
| 4409 |
|
|
struct elf_dyn_relocs **pp, *p;
|
| 4410 |
|
|
struct ppc_elf_link_hash_entry *eh;
|
| 4411 |
|
|
|
| 4412 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
| 4413 |
|
|
while (h->root.type == bfd_link_hash_indirect
|
| 4414 |
|
|
|| h->root.type == bfd_link_hash_warning)
|
| 4415 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
| 4416 |
|
|
eh = (struct ppc_elf_link_hash_entry *) h;
|
| 4417 |
|
|
|
| 4418 |
|
|
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
|
| 4419 |
|
|
if (p->sec == sec)
|
| 4420 |
|
|
{
|
| 4421 |
|
|
/* Everything must go for SEC. */
|
| 4422 |
|
|
*pp = p->next;
|
| 4423 |
|
|
break;
|
| 4424 |
|
|
}
|
| 4425 |
|
|
}
|
| 4426 |
|
|
|
| 4427 |
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
| 4428 |
|
|
if (!htab->is_vxworks
|
| 4429 |
|
|
&& h == NULL
|
| 4430 |
|
|
&& local_got_refcounts != NULL
|
| 4431 |
|
|
&& (!info->shared
|
| 4432 |
|
|
|| is_branch_reloc (r_type)))
|
| 4433 |
|
|
{
|
| 4434 |
|
|
struct plt_entry **local_plt = (struct plt_entry **)
|
| 4435 |
|
|
(local_got_refcounts + symtab_hdr->sh_info);
|
| 4436 |
|
|
char *local_got_tls_masks = (char *)
|
| 4437 |
|
|
(local_plt + symtab_hdr->sh_info);
|
| 4438 |
|
|
if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0)
|
| 4439 |
|
|
{
|
| 4440 |
|
|
struct plt_entry **ifunc = local_plt + r_symndx;
|
| 4441 |
|
|
bfd_vma addend = 0;
|
| 4442 |
|
|
struct plt_entry *ent;
|
| 4443 |
|
|
|
| 4444 |
|
|
if (r_type == R_PPC_PLTREL24 && info->shared)
|
| 4445 |
|
|
addend = rel->r_addend;
|
| 4446 |
|
|
ent = find_plt_ent (ifunc, got2, addend);
|
| 4447 |
|
|
if (ent->plt.refcount > 0)
|
| 4448 |
|
|
ent->plt.refcount -= 1;
|
| 4449 |
|
|
continue;
|
| 4450 |
|
|
}
|
| 4451 |
|
|
}
|
| 4452 |
|
|
|
| 4453 |
|
|
switch (r_type)
|
| 4454 |
|
|
{
|
| 4455 |
|
|
case R_PPC_GOT_TLSLD16:
|
| 4456 |
|
|
case R_PPC_GOT_TLSLD16_LO:
|
| 4457 |
|
|
case R_PPC_GOT_TLSLD16_HI:
|
| 4458 |
|
|
case R_PPC_GOT_TLSLD16_HA:
|
| 4459 |
|
|
case R_PPC_GOT_TLSGD16:
|
| 4460 |
|
|
case R_PPC_GOT_TLSGD16_LO:
|
| 4461 |
|
|
case R_PPC_GOT_TLSGD16_HI:
|
| 4462 |
|
|
case R_PPC_GOT_TLSGD16_HA:
|
| 4463 |
|
|
case R_PPC_GOT_TPREL16:
|
| 4464 |
|
|
case R_PPC_GOT_TPREL16_LO:
|
| 4465 |
|
|
case R_PPC_GOT_TPREL16_HI:
|
| 4466 |
|
|
case R_PPC_GOT_TPREL16_HA:
|
| 4467 |
|
|
case R_PPC_GOT_DTPREL16:
|
| 4468 |
|
|
case R_PPC_GOT_DTPREL16_LO:
|
| 4469 |
|
|
case R_PPC_GOT_DTPREL16_HI:
|
| 4470 |
|
|
case R_PPC_GOT_DTPREL16_HA:
|
| 4471 |
|
|
case R_PPC_GOT16:
|
| 4472 |
|
|
case R_PPC_GOT16_LO:
|
| 4473 |
|
|
case R_PPC_GOT16_HI:
|
| 4474 |
|
|
case R_PPC_GOT16_HA:
|
| 4475 |
|
|
if (h != NULL)
|
| 4476 |
|
|
{
|
| 4477 |
|
|
if (h->got.refcount > 0)
|
| 4478 |
|
|
h->got.refcount--;
|
| 4479 |
|
|
if (!info->shared)
|
| 4480 |
|
|
{
|
| 4481 |
|
|
struct plt_entry *ent;
|
| 4482 |
|
|
|
| 4483 |
|
|
ent = find_plt_ent (&h->plt.plist, NULL, 0);
|
| 4484 |
|
|
if (ent != NULL && ent->plt.refcount > 0)
|
| 4485 |
|
|
ent->plt.refcount -= 1;
|
| 4486 |
|
|
}
|
| 4487 |
|
|
}
|
| 4488 |
|
|
else if (local_got_refcounts != NULL)
|
| 4489 |
|
|
{
|
| 4490 |
|
|
if (local_got_refcounts[r_symndx] > 0)
|
| 4491 |
|
|
local_got_refcounts[r_symndx]--;
|
| 4492 |
|
|
}
|
| 4493 |
|
|
break;
|
| 4494 |
|
|
|
| 4495 |
|
|
case R_PPC_REL24:
|
| 4496 |
|
|
case R_PPC_REL14:
|
| 4497 |
|
|
case R_PPC_REL14_BRTAKEN:
|
| 4498 |
|
|
case R_PPC_REL14_BRNTAKEN:
|
| 4499 |
|
|
case R_PPC_REL32:
|
| 4500 |
|
|
if (h == NULL || h == htab->elf.hgot)
|
| 4501 |
|
|
break;
|
| 4502 |
|
|
/* Fall thru */
|
| 4503 |
|
|
|
| 4504 |
|
|
case R_PPC_ADDR32:
|
| 4505 |
|
|
case R_PPC_ADDR24:
|
| 4506 |
|
|
case R_PPC_ADDR16:
|
| 4507 |
|
|
case R_PPC_ADDR16_LO:
|
| 4508 |
|
|
case R_PPC_ADDR16_HI:
|
| 4509 |
|
|
case R_PPC_ADDR16_HA:
|
| 4510 |
|
|
case R_PPC_ADDR14:
|
| 4511 |
|
|
case R_PPC_ADDR14_BRTAKEN:
|
| 4512 |
|
|
case R_PPC_ADDR14_BRNTAKEN:
|
| 4513 |
|
|
case R_PPC_UADDR32:
|
| 4514 |
|
|
case R_PPC_UADDR16:
|
| 4515 |
|
|
if (info->shared)
|
| 4516 |
|
|
break;
|
| 4517 |
|
|
|
| 4518 |
|
|
case R_PPC_PLT32:
|
| 4519 |
|
|
case R_PPC_PLTREL24:
|
| 4520 |
|
|
case R_PPC_PLTREL32:
|
| 4521 |
|
|
case R_PPC_PLT16_LO:
|
| 4522 |
|
|
case R_PPC_PLT16_HI:
|
| 4523 |
|
|
case R_PPC_PLT16_HA:
|
| 4524 |
|
|
if (h != NULL)
|
| 4525 |
|
|
{
|
| 4526 |
|
|
bfd_vma addend = 0;
|
| 4527 |
|
|
struct plt_entry *ent;
|
| 4528 |
|
|
|
| 4529 |
|
|
if (r_type == R_PPC_PLTREL24 && info->shared)
|
| 4530 |
|
|
addend = rel->r_addend;
|
| 4531 |
|
|
ent = find_plt_ent (&h->plt.plist, got2, addend);
|
| 4532 |
|
|
if (ent != NULL && ent->plt.refcount > 0)
|
| 4533 |
|
|
ent->plt.refcount -= 1;
|
| 4534 |
|
|
}
|
| 4535 |
|
|
break;
|
| 4536 |
|
|
|
| 4537 |
|
|
default:
|
| 4538 |
|
|
break;
|
| 4539 |
|
|
}
|
| 4540 |
|
|
}
|
| 4541 |
|
|
return TRUE;
|
| 4542 |
|
|
}
|
| 4543 |
|
|
|
| 4544 |
|
|
/* Set plt output section type, htab->tls_get_addr, and call the
|
| 4545 |
|
|
generic ELF tls_setup function. */
|
| 4546 |
|
|
|
| 4547 |
|
|
asection *
|
| 4548 |
|
|
ppc_elf_tls_setup (bfd *obfd,
|
| 4549 |
|
|
struct bfd_link_info *info,
|
| 4550 |
|
|
int no_tls_get_addr_opt)
|
| 4551 |
|
|
{
|
| 4552 |
|
|
struct ppc_elf_link_hash_table *htab;
|
| 4553 |
|
|
|
| 4554 |
|
|
htab = ppc_elf_hash_table (info);
|
| 4555 |
|
|
htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
|
| 4556 |
|
|
FALSE, FALSE, TRUE);
|
| 4557 |
|
|
if (!no_tls_get_addr_opt)
|
| 4558 |
|
|
{
|
| 4559 |
|
|
struct elf_link_hash_entry *opt, *tga;
|
| 4560 |
|
|
opt = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt",
|
| 4561 |
|
|
FALSE, FALSE, TRUE);
|
| 4562 |
|
|
if (opt != NULL
|
| 4563 |
|
|
&& (opt->root.type == bfd_link_hash_defined
|
| 4564 |
|
|
|| opt->root.type == bfd_link_hash_defweak))
|
| 4565 |
|
|
{
|
| 4566 |
|
|
/* If glibc supports an optimized __tls_get_addr call stub,
|
| 4567 |
|
|
signalled by the presence of __tls_get_addr_opt, and we'll
|
| 4568 |
|
|
be calling __tls_get_addr via a plt call stub, then
|
| 4569 |
|
|
make __tls_get_addr point to __tls_get_addr_opt. */
|
| 4570 |
|
|
tga = htab->tls_get_addr;
|
| 4571 |
|
|
if (htab->elf.dynamic_sections_created
|
| 4572 |
|
|
&& tga != NULL
|
| 4573 |
|
|
&& (tga->type == STT_FUNC
|
| 4574 |
|
|
|| tga->needs_plt)
|
| 4575 |
|
|
&& !(SYMBOL_CALLS_LOCAL (info, tga)
|
| 4576 |
|
|
|| (ELF_ST_VISIBILITY (tga->other) != STV_DEFAULT
|
| 4577 |
|
|
&& tga->root.type == bfd_link_hash_undefweak)))
|
| 4578 |
|
|
{
|
| 4579 |
|
|
struct plt_entry *ent;
|
| 4580 |
|
|
for (ent = tga->plt.plist; ent != NULL; ent = ent->next)
|
| 4581 |
|
|
if (ent->plt.refcount > 0)
|
| 4582 |
|
|
break;
|
| 4583 |
|
|
if (ent != NULL)
|
| 4584 |
|
|
{
|
| 4585 |
|
|
tga->root.type = bfd_link_hash_indirect;
|
| 4586 |
|
|
tga->root.u.i.link = &opt->root;
|
| 4587 |
|
|
ppc_elf_copy_indirect_symbol (info, opt, tga);
|
| 4588 |
|
|
if (opt->dynindx != -1)
|
| 4589 |
|
|
{
|
| 4590 |
|
|
/* Use __tls_get_addr_opt in dynamic relocations. */
|
| 4591 |
|
|
opt->dynindx = -1;
|
| 4592 |
|
|
_bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
|
| 4593 |
|
|
opt->dynstr_index);
|
| 4594 |
|
|
if (!bfd_elf_link_record_dynamic_symbol (info, opt))
|
| 4595 |
|
|
return FALSE;
|
| 4596 |
|
|
}
|
| 4597 |
|
|
htab->tls_get_addr = opt;
|
| 4598 |
|
|
}
|
| 4599 |
|
|
}
|
| 4600 |
|
|
}
|
| 4601 |
|
|
else
|
| 4602 |
|
|
no_tls_get_addr_opt = TRUE;
|
| 4603 |
|
|
}
|
| 4604 |
|
|
htab->no_tls_get_addr_opt = no_tls_get_addr_opt;
|
| 4605 |
|
|
if (htab->plt_type == PLT_NEW
|
| 4606 |
|
|
&& htab->plt != NULL
|
| 4607 |
|
|
&& htab->plt->output_section != NULL)
|
| 4608 |
|
|
{
|
| 4609 |
|
|
elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
|
| 4610 |
|
|
elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
|
| 4611 |
|
|
}
|
| 4612 |
|
|
|
| 4613 |
|
|
return _bfd_elf_tls_setup (obfd, info);
|
| 4614 |
|
|
}
|
| 4615 |
|
|
|
| 4616 |
|
|
/* Return TRUE iff REL is a branch reloc with a global symbol matching
|
| 4617 |
|
|
HASH. */
|
| 4618 |
|
|
|
| 4619 |
|
|
static bfd_boolean
|
| 4620 |
|
|
branch_reloc_hash_match (const bfd *ibfd,
|
| 4621 |
|
|
const Elf_Internal_Rela *rel,
|
| 4622 |
|
|
const struct elf_link_hash_entry *hash)
|
| 4623 |
|
|
{
|
| 4624 |
|
|
Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
|
| 4625 |
|
|
enum elf_ppc_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
|
| 4626 |
|
|
unsigned int r_symndx = ELF32_R_SYM (rel->r_info);
|
| 4627 |
|
|
|
| 4628 |
|
|
if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type))
|
| 4629 |
|
|
{
|
| 4630 |
|
|
struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd);
|
| 4631 |
|
|
struct elf_link_hash_entry *h;
|
| 4632 |
|
|
|
| 4633 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
| 4634 |
|
|
while (h->root.type == bfd_link_hash_indirect
|
| 4635 |
|
|
|| h->root.type == bfd_link_hash_warning)
|
| 4636 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
| 4637 |
|
|
if (h == hash)
|
| 4638 |
|
|
return TRUE;
|
| 4639 |
|
|
}
|
| 4640 |
|
|
return FALSE;
|
| 4641 |
|
|
}
|
| 4642 |
|
|
|
| 4643 |
|
|
/* Run through all the TLS relocs looking for optimization
|
| 4644 |
|
|
opportunities. */
|
| 4645 |
|
|
|
| 4646 |
|
|
bfd_boolean
|
| 4647 |
|
|
ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
|
| 4648 |
|
|
struct bfd_link_info *info)
|
| 4649 |
|
|
{
|
| 4650 |
|
|
bfd *ibfd;
|
| 4651 |
|
|
asection *sec;
|
| 4652 |
|
|
struct ppc_elf_link_hash_table *htab;
|
| 4653 |
|
|
int pass;
|
| 4654 |
|
|
|
| 4655 |
|
|
if (info->relocatable || !info->executable)
|
| 4656 |
|
|
return TRUE;
|
| 4657 |
|
|
|
| 4658 |
|
|
htab = ppc_elf_hash_table (info);
|
| 4659 |
|
|
if (htab == NULL)
|
| 4660 |
|
|
return FALSE;
|
| 4661 |
|
|
|
| 4662 |
|
|
/* Make two passes through the relocs. First time check that tls
|
| 4663 |
|
|
relocs involved in setting up a tls_get_addr call are indeed
|
| 4664 |
|
|
followed by such a call. If they are not, don't do any tls
|
| 4665 |
|
|
optimization. On the second pass twiddle tls_mask flags to
|
| 4666 |
|
|
notify relocate_section that optimization can be done, and
|
| 4667 |
|
|
adjust got and plt refcounts. */
|
| 4668 |
|
|
for (pass = 0; pass < 2; ++pass)
|
| 4669 |
|
|
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
|
| 4670 |
|
|
{
|
| 4671 |
|
|
Elf_Internal_Sym *locsyms = NULL;
|
| 4672 |
|
|
Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd);
|
| 4673 |
|
|
asection *got2 = bfd_get_section_by_name (ibfd, ".got2");
|
| 4674 |
|
|
|
| 4675 |
|
|
for (sec = ibfd->sections; sec != NULL; sec = sec->next)
|
| 4676 |
|
|
if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
|
| 4677 |
|
|
{
|
| 4678 |
|
|
Elf_Internal_Rela *relstart, *rel, *relend;
|
| 4679 |
|
|
int expecting_tls_get_addr = 0;
|
| 4680 |
|
|
|
| 4681 |
|
|
/* Read the relocations. */
|
| 4682 |
|
|
relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
|
| 4683 |
|
|
info->keep_memory);
|
| 4684 |
|
|
if (relstart == NULL)
|
| 4685 |
|
|
return FALSE;
|
| 4686 |
|
|
|
| 4687 |
|
|
relend = relstart + sec->reloc_count;
|
| 4688 |
|
|
for (rel = relstart; rel < relend; rel++)
|
| 4689 |
|
|
{
|
| 4690 |
|
|
enum elf_ppc_reloc_type r_type;
|
| 4691 |
|
|
unsigned long r_symndx;
|
| 4692 |
|
|
struct elf_link_hash_entry *h = NULL;
|
| 4693 |
|
|
char *tls_mask;
|
| 4694 |
|
|
char tls_set, tls_clear;
|
| 4695 |
|
|
bfd_boolean is_local;
|
| 4696 |
|
|
bfd_signed_vma *got_count;
|
| 4697 |
|
|
|
| 4698 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
| 4699 |
|
|
if (r_symndx >= symtab_hdr->sh_info)
|
| 4700 |
|
|
{
|
| 4701 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
| 4702 |
|
|
|
| 4703 |
|
|
sym_hashes = elf_sym_hashes (ibfd);
|
| 4704 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
| 4705 |
|
|
while (h->root.type == bfd_link_hash_indirect
|
| 4706 |
|
|
|| h->root.type == bfd_link_hash_warning)
|
| 4707 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
| 4708 |
|
|
}
|
| 4709 |
|
|
|
| 4710 |
|
|
is_local = FALSE;
|
| 4711 |
|
|
if (h == NULL
|
| 4712 |
|
|
|| !h->def_dynamic)
|
| 4713 |
|
|
is_local = TRUE;
|
| 4714 |
|
|
|
| 4715 |
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
| 4716 |
|
|
/* If this section has old-style __tls_get_addr calls
|
| 4717 |
|
|
without marker relocs, then check that each
|
| 4718 |
|
|
__tls_get_addr call reloc is preceded by a reloc
|
| 4719 |
|
|
that conceivably belongs to the __tls_get_addr arg
|
| 4720 |
|
|
setup insn. If we don't find matching arg setup
|
| 4721 |
|
|
relocs, don't do any tls optimization. */
|
| 4722 |
|
|
if (pass == 0
|
| 4723 |
|
|
&& sec->has_tls_get_addr_call
|
| 4724 |
|
|
&& h != NULL
|
| 4725 |
|
|
&& h == htab->tls_get_addr
|
| 4726 |
|
|
&& !expecting_tls_get_addr
|
| 4727 |
|
|
&& is_branch_reloc (r_type))
|
| 4728 |
|
|
{
|
| 4729 |
|
|
info->callbacks->minfo ("%H __tls_get_addr lost arg, "
|
| 4730 |
|
|
"TLS optimization disabled\n",
|
| 4731 |
|
|
ibfd, sec, rel->r_offset);
|
| 4732 |
|
|
if (elf_section_data (sec)->relocs != relstart)
|
| 4733 |
|
|
free (relstart);
|
| 4734 |
|
|
return TRUE;
|
| 4735 |
|
|
}
|
| 4736 |
|
|
|
| 4737 |
|
|
expecting_tls_get_addr = 0;
|
| 4738 |
|
|
switch (r_type)
|
| 4739 |
|
|
{
|
| 4740 |
|
|
case R_PPC_GOT_TLSLD16:
|
| 4741 |
|
|
case R_PPC_GOT_TLSLD16_LO:
|
| 4742 |
|
|
expecting_tls_get_addr = 1;
|
| 4743 |
|
|
/* Fall thru */
|
| 4744 |
|
|
|
| 4745 |
|
|
case R_PPC_GOT_TLSLD16_HI:
|
| 4746 |
|
|
case R_PPC_GOT_TLSLD16_HA:
|
| 4747 |
|
|
/* These relocs should never be against a symbol
|
| 4748 |
|
|
defined in a shared lib. Leave them alone if
|
| 4749 |
|
|
that turns out to be the case. */
|
| 4750 |
|
|
if (!is_local)
|
| 4751 |
|
|
continue;
|
| 4752 |
|
|
|
| 4753 |
|
|
/* LD -> LE */
|
| 4754 |
|
|
tls_set = 0;
|
| 4755 |
|
|
tls_clear = TLS_LD;
|
| 4756 |
|
|
break;
|
| 4757 |
|
|
|
| 4758 |
|
|
case R_PPC_GOT_TLSGD16:
|
| 4759 |
|
|
case R_PPC_GOT_TLSGD16_LO:
|
| 4760 |
|
|
expecting_tls_get_addr = 1;
|
| 4761 |
|
|
/* Fall thru */
|
| 4762 |
|
|
|
| 4763 |
|
|
case R_PPC_GOT_TLSGD16_HI:
|
| 4764 |
|
|
case R_PPC_GOT_TLSGD16_HA:
|
| 4765 |
|
|
if (is_local)
|
| 4766 |
|
|
/* GD -> LE */
|
| 4767 |
|
|
tls_set = 0;
|
| 4768 |
|
|
else
|
| 4769 |
|
|
/* GD -> IE */
|
| 4770 |
|
|
tls_set = TLS_TLS | TLS_TPRELGD;
|
| 4771 |
|
|
tls_clear = TLS_GD;
|
| 4772 |
|
|
break;
|
| 4773 |
|
|
|
| 4774 |
|
|
case R_PPC_GOT_TPREL16:
|
| 4775 |
|
|
case R_PPC_GOT_TPREL16_LO:
|
| 4776 |
|
|
case R_PPC_GOT_TPREL16_HI:
|
| 4777 |
|
|
case R_PPC_GOT_TPREL16_HA:
|
| 4778 |
|
|
if (is_local)
|
| 4779 |
|
|
{
|
| 4780 |
|
|
/* IE -> LE */
|
| 4781 |
|
|
tls_set = 0;
|
| 4782 |
|
|
tls_clear = TLS_TPREL;
|
| 4783 |
|
|
break;
|
| 4784 |
|
|
}
|
| 4785 |
|
|
else
|
| 4786 |
|
|
continue;
|
| 4787 |
|
|
|
| 4788 |
|
|
case R_PPC_TLSGD:
|
| 4789 |
|
|
case R_PPC_TLSLD:
|
| 4790 |
|
|
expecting_tls_get_addr = 2;
|
| 4791 |
|
|
tls_set = 0;
|
| 4792 |
|
|
tls_clear = 0;
|
| 4793 |
|
|
break;
|
| 4794 |
|
|
|
| 4795 |
|
|
default:
|
| 4796 |
|
|
continue;
|
| 4797 |
|
|
}
|
| 4798 |
|
|
|
| 4799 |
|
|
if (pass == 0)
|
| 4800 |
|
|
{
|
| 4801 |
|
|
if (!expecting_tls_get_addr
|
| 4802 |
|
|
|| (expecting_tls_get_addr == 1
|
| 4803 |
|
|
&& !sec->has_tls_get_addr_call))
|
| 4804 |
|
|
continue;
|
| 4805 |
|
|
|
| 4806 |
|
|
if (rel + 1 < relend
|
| 4807 |
|
|
&& branch_reloc_hash_match (ibfd, rel + 1,
|
| 4808 |
|
|
htab->tls_get_addr))
|
| 4809 |
|
|
continue;
|
| 4810 |
|
|
|
| 4811 |
|
|
/* Uh oh, we didn't find the expected call. We
|
| 4812 |
|
|
could just mark this symbol to exclude it
|
| 4813 |
|
|
from tls optimization but it's safer to skip
|
| 4814 |
|
|
the entire optimization. */
|
| 4815 |
|
|
info->callbacks->minfo (_("%H arg lost __tls_get_addr, "
|
| 4816 |
|
|
"TLS optimization disabled\n"),
|
| 4817 |
|
|
ibfd, sec, rel->r_offset);
|
| 4818 |
|
|
if (elf_section_data (sec)->relocs != relstart)
|
| 4819 |
|
|
free (relstart);
|
| 4820 |
|
|
return TRUE;
|
| 4821 |
|
|
}
|
| 4822 |
|
|
|
| 4823 |
|
|
if (expecting_tls_get_addr)
|
| 4824 |
|
|
{
|
| 4825 |
|
|
struct plt_entry *ent;
|
| 4826 |
|
|
bfd_vma addend = 0;
|
| 4827 |
|
|
|
| 4828 |
|
|
if (info->shared
|
| 4829 |
|
|
&& ELF32_R_TYPE (rel[1].r_info) == R_PPC_PLTREL24)
|
| 4830 |
|
|
addend = rel[1].r_addend;
|
| 4831 |
|
|
ent = find_plt_ent (&htab->tls_get_addr->plt.plist,
|
| 4832 |
|
|
got2, addend);
|
| 4833 |
|
|
if (ent != NULL && ent->plt.refcount > 0)
|
| 4834 |
|
|
ent->plt.refcount -= 1;
|
| 4835 |
|
|
|
| 4836 |
|
|
if (expecting_tls_get_addr == 2)
|
| 4837 |
|
|
continue;
|
| 4838 |
|
|
}
|
| 4839 |
|
|
|
| 4840 |
|
|
if (h != NULL)
|
| 4841 |
|
|
{
|
| 4842 |
|
|
tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
|
| 4843 |
|
|
got_count = &h->got.refcount;
|
| 4844 |
|
|
}
|
| 4845 |
|
|
else
|
| 4846 |
|
|
{
|
| 4847 |
|
|
bfd_signed_vma *lgot_refs;
|
| 4848 |
|
|
struct plt_entry **local_plt;
|
| 4849 |
|
|
char *lgot_masks;
|
| 4850 |
|
|
|
| 4851 |
|
|
if (locsyms == NULL)
|
| 4852 |
|
|
{
|
| 4853 |
|
|
locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
|
| 4854 |
|
|
if (locsyms == NULL)
|
| 4855 |
|
|
locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
|
| 4856 |
|
|
symtab_hdr->sh_info,
|
| 4857 |
|
|
0, NULL, NULL, NULL);
|
| 4858 |
|
|
if (locsyms == NULL)
|
| 4859 |
|
|
{
|
| 4860 |
|
|
if (elf_section_data (sec)->relocs != relstart)
|
| 4861 |
|
|
free (relstart);
|
| 4862 |
|
|
return FALSE;
|
| 4863 |
|
|
}
|
| 4864 |
|
|
}
|
| 4865 |
|
|
lgot_refs = elf_local_got_refcounts (ibfd);
|
| 4866 |
|
|
if (lgot_refs == NULL)
|
| 4867 |
|
|
abort ();
|
| 4868 |
|
|
local_plt = (struct plt_entry **)
|
| 4869 |
|
|
(lgot_refs + symtab_hdr->sh_info);
|
| 4870 |
|
|
lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
|
| 4871 |
|
|
tls_mask = &lgot_masks[r_symndx];
|
| 4872 |
|
|
got_count = &lgot_refs[r_symndx];
|
| 4873 |
|
|
}
|
| 4874 |
|
|
|
| 4875 |
|
|
if (tls_set == 0)
|
| 4876 |
|
|
{
|
| 4877 |
|
|
/* We managed to get rid of a got entry. */
|
| 4878 |
|
|
if (*got_count > 0)
|
| 4879 |
|
|
*got_count -= 1;
|
| 4880 |
|
|
}
|
| 4881 |
|
|
|
| 4882 |
|
|
*tls_mask |= tls_set;
|
| 4883 |
|
|
*tls_mask &= ~tls_clear;
|
| 4884 |
|
|
}
|
| 4885 |
|
|
|
| 4886 |
|
|
if (elf_section_data (sec)->relocs != relstart)
|
| 4887 |
|
|
free (relstart);
|
| 4888 |
|
|
}
|
| 4889 |
|
|
|
| 4890 |
|
|
if (locsyms != NULL
|
| 4891 |
|
|
&& (symtab_hdr->contents != (unsigned char *) locsyms))
|
| 4892 |
|
|
{
|
| 4893 |
|
|
if (!info->keep_memory)
|
| 4894 |
|
|
free (locsyms);
|
| 4895 |
|
|
else
|
| 4896 |
|
|
symtab_hdr->contents = (unsigned char *) locsyms;
|
| 4897 |
|
|
}
|
| 4898 |
|
|
}
|
| 4899 |
|
|
return TRUE;
|
| 4900 |
|
|
}
|
| 4901 |
|
|
|
| 4902 |
|
|
/* Return true if we have dynamic relocs that apply to read-only sections. */
|
| 4903 |
|
|
|
| 4904 |
|
|
static bfd_boolean
|
| 4905 |
|
|
readonly_dynrelocs (struct elf_link_hash_entry *h)
|
| 4906 |
|
|
{
|
| 4907 |
|
|
struct elf_dyn_relocs *p;
|
| 4908 |
|
|
|
| 4909 |
|
|
for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
|
| 4910 |
|
|
{
|
| 4911 |
|
|
asection *s = p->sec->output_section;
|
| 4912 |
|
|
|
| 4913 |
|
|
if (s != NULL
|
| 4914 |
|
|
&& ((s->flags & (SEC_READONLY | SEC_ALLOC))
|
| 4915 |
|
|
== (SEC_READONLY | SEC_ALLOC)))
|
| 4916 |
|
|
return TRUE;
|
| 4917 |
|
|
}
|
| 4918 |
|
|
return FALSE;
|
| 4919 |
|
|
}
|
| 4920 |
|
|
|
| 4921 |
|
|
/* Adjust a symbol defined by a dynamic object and referenced by a
|
| 4922 |
|
|
regular object. The current definition is in some section of the
|
| 4923 |
|
|
dynamic object, but we're not including those sections. We have to
|
| 4924 |
|
|
change the definition to something the rest of the link can
|
| 4925 |
|
|
understand. */
|
| 4926 |
|
|
|
| 4927 |
|
|
static bfd_boolean
|
| 4928 |
|
|
ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
|
| 4929 |
|
|
struct elf_link_hash_entry *h)
|
| 4930 |
|
|
{
|
| 4931 |
|
|
struct ppc_elf_link_hash_table *htab;
|
| 4932 |
|
|
asection *s;
|
| 4933 |
|
|
|
| 4934 |
|
|
#ifdef DEBUG
|
| 4935 |
|
|
fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
|
| 4936 |
|
|
h->root.root.string);
|
| 4937 |
|
|
#endif
|
| 4938 |
|
|
|
| 4939 |
|
|
/* Make sure we know what is going on here. */
|
| 4940 |
|
|
htab = ppc_elf_hash_table (info);
|
| 4941 |
|
|
BFD_ASSERT (htab->elf.dynobj != NULL
|
| 4942 |
|
|
&& (h->needs_plt
|
| 4943 |
|
|
|| h->type == STT_GNU_IFUNC
|
| 4944 |
|
|
|| h->u.weakdef != NULL
|
| 4945 |
|
|
|| (h->def_dynamic
|
| 4946 |
|
|
&& h->ref_regular
|
| 4947 |
|
|
&& !h->def_regular)));
|
| 4948 |
|
|
|
| 4949 |
|
|
/* Deal with function syms. */
|
| 4950 |
|
|
if (h->type == STT_FUNC
|
| 4951 |
|
|
|| h->type == STT_GNU_IFUNC
|
| 4952 |
|
|
|| h->needs_plt)
|
| 4953 |
|
|
{
|
| 4954 |
|
|
/* Clear procedure linkage table information for any symbol that
|
| 4955 |
|
|
won't need a .plt entry. */
|
| 4956 |
|
|
struct plt_entry *ent;
|
| 4957 |
|
|
for (ent = h->plt.plist; ent != NULL; ent = ent->next)
|
| 4958 |
|
|
if (ent->plt.refcount > 0)
|
| 4959 |
|
|
break;
|
| 4960 |
|
|
if (ent == NULL
|
| 4961 |
|
|
|| (h->type != STT_GNU_IFUNC
|
| 4962 |
|
|
&& (SYMBOL_CALLS_LOCAL (info, h)
|
| 4963 |
|
|
|| (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
|
| 4964 |
|
|
&& h->root.type == bfd_link_hash_undefweak))))
|
| 4965 |
|
|
{
|
| 4966 |
|
|
/* A PLT entry is not required/allowed when:
|
| 4967 |
|
|
|
| 4968 |
|
|
1. We are not using ld.so; because then the PLT entry
|
| 4969 |
|
|
can't be set up, so we can't use one. In this case,
|
| 4970 |
|
|
ppc_elf_adjust_dynamic_symbol won't even be called.
|
| 4971 |
|
|
|
| 4972 |
|
|
2. GC has rendered the entry unused.
|
| 4973 |
|
|
|
| 4974 |
|
|
3. We know for certain that a call to this symbol
|
| 4975 |
|
|
will go to this object, or will remain undefined. */
|
| 4976 |
|
|
h->plt.plist = NULL;
|
| 4977 |
|
|
h->needs_plt = 0;
|
| 4978 |
|
|
}
|
| 4979 |
|
|
else
|
| 4980 |
|
|
{
|
| 4981 |
|
|
/* After adjust_dynamic_symbol, non_got_ref set in the
|
| 4982 |
|
|
non-shared case means that we have allocated space in
|
| 4983 |
|
|
.dynbss for the symbol and thus dyn_relocs for this
|
| 4984 |
|
|
symbol should be discarded.
|
| 4985 |
|
|
If we get here we know we are making a PLT entry for this
|
| 4986 |
|
|
symbol, and in an executable we'd normally resolve
|
| 4987 |
|
|
relocations against this symbol to the PLT entry. Allow
|
| 4988 |
|
|
dynamic relocs if the reference is weak, and the dynamic
|
| 4989 |
|
|
relocs will not cause text relocation. */
|
| 4990 |
|
|
if (!h->ref_regular_nonweak
|
| 4991 |
|
|
&& h->non_got_ref
|
| 4992 |
|
|
&& h->type != STT_GNU_IFUNC
|
| 4993 |
|
|
&& !htab->is_vxworks
|
| 4994 |
|
|
&& !ppc_elf_hash_entry (h)->has_sda_refs
|
| 4995 |
|
|
&& !readonly_dynrelocs (h))
|
| 4996 |
|
|
h->non_got_ref = 0;
|
| 4997 |
|
|
}
|
| 4998 |
|
|
return TRUE;
|
| 4999 |
|
|
}
|
| 5000 |
|
|
else
|
| 5001 |
|
|
h->plt.plist = NULL;
|
| 5002 |
|
|
|
| 5003 |
|
|
/* If this is a weak symbol, and there is a real definition, the
|
| 5004 |
|
|
processor independent code will have arranged for us to see the
|
| 5005 |
|
|
real definition first, and we can just use the same value. */
|
| 5006 |
|
|
if (h->u.weakdef != NULL)
|
| 5007 |
|
|
{
|
| 5008 |
|
|
BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
|
| 5009 |
|
|
|| h->u.weakdef->root.type == bfd_link_hash_defweak);
|
| 5010 |
|
|
h->root.u.def.section = h->u.weakdef->root.u.def.section;
|
| 5011 |
|
|
h->root.u.def.value = h->u.weakdef->root.u.def.value;
|
| 5012 |
|
|
if (ELIMINATE_COPY_RELOCS)
|
| 5013 |
|
|
h->non_got_ref = h->u.weakdef->non_got_ref;
|
| 5014 |
|
|
return TRUE;
|
| 5015 |
|
|
}
|
| 5016 |
|
|
|
| 5017 |
|
|
/* This is a reference to a symbol defined by a dynamic object which
|
| 5018 |
|
|
is not a function. */
|
| 5019 |
|
|
|
| 5020 |
|
|
/* If we are creating a shared library, we must presume that the
|
| 5021 |
|
|
only references to the symbol are via the global offset table.
|
| 5022 |
|
|
For such cases we need not do anything here; the relocations will
|
| 5023 |
|
|
be handled correctly by relocate_section. */
|
| 5024 |
|
|
if (info->shared)
|
| 5025 |
|
|
return TRUE;
|
| 5026 |
|
|
|
| 5027 |
|
|
/* If there are no references to this symbol that do not use the
|
| 5028 |
|
|
GOT, we don't need to generate a copy reloc. */
|
| 5029 |
|
|
if (!h->non_got_ref)
|
| 5030 |
|
|
return TRUE;
|
| 5031 |
|
|
|
| 5032 |
|
|
/* If we didn't find any dynamic relocs in read-only sections, then
|
| 5033 |
|
|
we'll be keeping the dynamic relocs and avoiding the copy reloc.
|
| 5034 |
|
|
We can't do this if there are any small data relocations. This
|
| 5035 |
|
|
doesn't work on VxWorks, where we can not have dynamic
|
| 5036 |
|
|
relocations (other than copy and jump slot relocations) in an
|
| 5037 |
|
|
executable. */
|
| 5038 |
|
|
if (ELIMINATE_COPY_RELOCS
|
| 5039 |
|
|
&& !ppc_elf_hash_entry (h)->has_sda_refs
|
| 5040 |
|
|
&& !htab->is_vxworks
|
| 5041 |
|
|
&& !h->def_regular
|
| 5042 |
|
|
&& !readonly_dynrelocs (h))
|
| 5043 |
|
|
{
|
| 5044 |
|
|
h->non_got_ref = 0;
|
| 5045 |
|
|
return TRUE;
|
| 5046 |
|
|
}
|
| 5047 |
|
|
|
| 5048 |
|
|
if (h->size == 0)
|
| 5049 |
|
|
{
|
| 5050 |
161 |
khays |
info->callbacks->einfo (_("%P: dynamic variable `%s' is zero size\n"),
|
| 5051 |
14 |
khays |
h->root.root.string);
|
| 5052 |
|
|
return TRUE;
|
| 5053 |
|
|
}
|
| 5054 |
|
|
|
| 5055 |
|
|
/* We must allocate the symbol in our .dynbss section, which will
|
| 5056 |
|
|
become part of the .bss section of the executable. There will be
|
| 5057 |
|
|
an entry for this symbol in the .dynsym section. The dynamic
|
| 5058 |
|
|
object will contain position independent code, so all references
|
| 5059 |
|
|
from the dynamic object to this symbol will go through the global
|
| 5060 |
|
|
offset table. The dynamic linker will use the .dynsym entry to
|
| 5061 |
|
|
determine the address it must put in the global offset table, so
|
| 5062 |
|
|
both the dynamic object and the regular object will refer to the
|
| 5063 |
|
|
same memory location for the variable.
|
| 5064 |
|
|
|
| 5065 |
|
|
Of course, if the symbol is referenced using SDAREL relocs, we
|
| 5066 |
|
|
must instead allocate it in .sbss. */
|
| 5067 |
|
|
|
| 5068 |
|
|
if (ppc_elf_hash_entry (h)->has_sda_refs)
|
| 5069 |
|
|
s = htab->dynsbss;
|
| 5070 |
|
|
else
|
| 5071 |
|
|
s = htab->dynbss;
|
| 5072 |
|
|
BFD_ASSERT (s != NULL);
|
| 5073 |
|
|
|
| 5074 |
|
|
/* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
|
| 5075 |
|
|
copy the initial value out of the dynamic object and into the
|
| 5076 |
|
|
runtime process image. We need to remember the offset into the
|
| 5077 |
|
|
.rela.bss section we are going to use. */
|
| 5078 |
|
|
if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
|
| 5079 |
|
|
{
|
| 5080 |
|
|
asection *srel;
|
| 5081 |
|
|
|
| 5082 |
|
|
if (ppc_elf_hash_entry (h)->has_sda_refs)
|
| 5083 |
|
|
srel = htab->relsbss;
|
| 5084 |
|
|
else
|
| 5085 |
|
|
srel = htab->relbss;
|
| 5086 |
|
|
BFD_ASSERT (srel != NULL);
|
| 5087 |
|
|
srel->size += sizeof (Elf32_External_Rela);
|
| 5088 |
|
|
h->needs_copy = 1;
|
| 5089 |
|
|
}
|
| 5090 |
|
|
|
| 5091 |
|
|
return _bfd_elf_adjust_dynamic_copy (h, s);
|
| 5092 |
|
|
}
|
| 5093 |
|
|
|
| 5094 |
|
|
/* Generate a symbol to mark plt call stubs. For non-PIC code the sym is
|
| 5095 |
|
|
xxxxxxxx.plt_call32.<callee> where xxxxxxxx is a hex number, usually 0,
|
| 5096 |
|
|
specifying the addend on the plt relocation. For -fpic code, the sym
|
| 5097 |
|
|
is xxxxxxxx.plt_pic32.<callee>, and for -fPIC
|
| 5098 |
|
|
xxxxxxxx.got2.plt_pic32.<callee>. */
|
| 5099 |
|
|
|
| 5100 |
|
|
static bfd_boolean
|
| 5101 |
|
|
add_stub_sym (struct plt_entry *ent,
|
| 5102 |
|
|
struct elf_link_hash_entry *h,
|
| 5103 |
|
|
struct bfd_link_info *info)
|
| 5104 |
|
|
{
|
| 5105 |
|
|
struct elf_link_hash_entry *sh;
|
| 5106 |
|
|
size_t len1, len2, len3;
|
| 5107 |
|
|
char *name;
|
| 5108 |
|
|
const char *stub;
|
| 5109 |
|
|
struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
|
| 5110 |
|
|
|
| 5111 |
|
|
if (info->shared)
|
| 5112 |
|
|
stub = ".plt_pic32.";
|
| 5113 |
|
|
else
|
| 5114 |
|
|
stub = ".plt_call32.";
|
| 5115 |
|
|
|
| 5116 |
|
|
len1 = strlen (h->root.root.string);
|
| 5117 |
|
|
len2 = strlen (stub);
|
| 5118 |
|
|
len3 = 0;
|
| 5119 |
|
|
if (ent->sec)
|
| 5120 |
|
|
len3 = strlen (ent->sec->name);
|
| 5121 |
|
|
name = bfd_malloc (len1 + len2 + len3 + 9);
|
| 5122 |
|
|
if (name == NULL)
|
| 5123 |
|
|
return FALSE;
|
| 5124 |
|
|
sprintf (name, "%08x", (unsigned) ent->addend & 0xffffffff);
|
| 5125 |
|
|
if (ent->sec)
|
| 5126 |
|
|
memcpy (name + 8, ent->sec->name, len3);
|
| 5127 |
|
|
memcpy (name + 8 + len3, stub, len2);
|
| 5128 |
|
|
memcpy (name + 8 + len3 + len2, h->root.root.string, len1 + 1);
|
| 5129 |
|
|
sh = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE);
|
| 5130 |
|
|
if (sh == NULL)
|
| 5131 |
|
|
return FALSE;
|
| 5132 |
|
|
if (sh->root.type == bfd_link_hash_new)
|
| 5133 |
|
|
{
|
| 5134 |
|
|
sh->root.type = bfd_link_hash_defined;
|
| 5135 |
|
|
sh->root.u.def.section = htab->glink;
|
| 5136 |
|
|
sh->root.u.def.value = ent->glink_offset;
|
| 5137 |
|
|
sh->ref_regular = 1;
|
| 5138 |
|
|
sh->def_regular = 1;
|
| 5139 |
|
|
sh->ref_regular_nonweak = 1;
|
| 5140 |
|
|
sh->forced_local = 1;
|
| 5141 |
|
|
sh->non_elf = 0;
|
| 5142 |
|
|
}
|
| 5143 |
|
|
return TRUE;
|
| 5144 |
|
|
}
|
| 5145 |
|
|
|
| 5146 |
|
|
/* Allocate NEED contiguous space in .got, and return the offset.
|
| 5147 |
|
|
Handles allocation of the got header when crossing 32k. */
|
| 5148 |
|
|
|
| 5149 |
|
|
static bfd_vma
|
| 5150 |
|
|
allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
|
| 5151 |
|
|
{
|
| 5152 |
|
|
bfd_vma where;
|
| 5153 |
|
|
unsigned int max_before_header;
|
| 5154 |
|
|
|
| 5155 |
|
|
if (htab->plt_type == PLT_VXWORKS)
|
| 5156 |
|
|
{
|
| 5157 |
|
|
where = htab->got->size;
|
| 5158 |
|
|
htab->got->size += need;
|
| 5159 |
|
|
}
|
| 5160 |
|
|
else
|
| 5161 |
|
|
{
|
| 5162 |
|
|
max_before_header = htab->plt_type == PLT_NEW ? 32768 : 32764;
|
| 5163 |
|
|
if (need <= htab->got_gap)
|
| 5164 |
|
|
{
|
| 5165 |
|
|
where = max_before_header - htab->got_gap;
|
| 5166 |
|
|
htab->got_gap -= need;
|
| 5167 |
|
|
}
|
| 5168 |
|
|
else
|
| 5169 |
|
|
{
|
| 5170 |
|
|
if (htab->got->size + need > max_before_header
|
| 5171 |
|
|
&& htab->got->size <= max_before_header)
|
| 5172 |
|
|
{
|
| 5173 |
|
|
htab->got_gap = max_before_header - htab->got->size;
|
| 5174 |
|
|
htab->got->size = max_before_header + htab->got_header_size;
|
| 5175 |
|
|
}
|
| 5176 |
|
|
where = htab->got->size;
|
| 5177 |
|
|
htab->got->size += need;
|
| 5178 |
|
|
}
|
| 5179 |
|
|
}
|
| 5180 |
|
|
return where;
|
| 5181 |
|
|
}
|
| 5182 |
|
|
|
| 5183 |
|
|
/* Allocate space in associated reloc sections for dynamic relocs. */
|
| 5184 |
|
|
|
| 5185 |
|
|
static bfd_boolean
|
| 5186 |
|
|
allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
|
| 5187 |
|
|
{
|
| 5188 |
|
|
struct bfd_link_info *info = inf;
|
| 5189 |
|
|
struct ppc_elf_link_hash_entry *eh;
|
| 5190 |
|
|
struct ppc_elf_link_hash_table *htab;
|
| 5191 |
|
|
struct elf_dyn_relocs *p;
|
| 5192 |
|
|
|
| 5193 |
|
|
if (h->root.type == bfd_link_hash_indirect)
|
| 5194 |
|
|
return TRUE;
|
| 5195 |
|
|
|
| 5196 |
|
|
htab = ppc_elf_hash_table (info);
|
| 5197 |
|
|
if (htab->elf.dynamic_sections_created
|
| 5198 |
|
|
|| h->type == STT_GNU_IFUNC)
|
| 5199 |
|
|
{
|
| 5200 |
|
|
struct plt_entry *ent;
|
| 5201 |
|
|
bfd_boolean doneone = FALSE;
|
| 5202 |
|
|
bfd_vma plt_offset = 0, glink_offset = 0;
|
| 5203 |
|
|
bfd_boolean dyn;
|
| 5204 |
|
|
|
| 5205 |
|
|
for (ent = h->plt.plist; ent != NULL; ent = ent->next)
|
| 5206 |
|
|
if (ent->plt.refcount > 0)
|
| 5207 |
|
|
{
|
| 5208 |
|
|
/* Make sure this symbol is output as a dynamic symbol. */
|
| 5209 |
|
|
if (h->dynindx == -1
|
| 5210 |
|
|
&& !h->forced_local
|
| 5211 |
|
|
&& !h->def_regular
|
| 5212 |
|
|
&& htab->elf.dynamic_sections_created)
|
| 5213 |
|
|
{
|
| 5214 |
|
|
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
| 5215 |
|
|
return FALSE;
|
| 5216 |
|
|
}
|
| 5217 |
|
|
|
| 5218 |
|
|
dyn = htab->elf.dynamic_sections_created;
|
| 5219 |
|
|
if (info->shared
|
| 5220 |
|
|
|| h->type == STT_GNU_IFUNC
|
| 5221 |
|
|
|| WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))
|
| 5222 |
|
|
{
|
| 5223 |
|
|
asection *s = htab->plt;
|
| 5224 |
|
|
if (!dyn || h->dynindx == -1)
|
| 5225 |
|
|
s = htab->iplt;
|
| 5226 |
|
|
|
| 5227 |
|
|
if (htab->plt_type == PLT_NEW || !dyn || h->dynindx == -1)
|
| 5228 |
|
|
{
|
| 5229 |
|
|
if (!doneone)
|
| 5230 |
|
|
{
|
| 5231 |
|
|
plt_offset = s->size;
|
| 5232 |
|
|
s->size += 4;
|
| 5233 |
|
|
}
|
| 5234 |
|
|
ent->plt.offset = plt_offset;
|
| 5235 |
|
|
|
| 5236 |
|
|
s = htab->glink;
|
| 5237 |
|
|
if (!doneone || info->shared)
|
| 5238 |
|
|
{
|
| 5239 |
|
|
glink_offset = s->size;
|
| 5240 |
|
|
s->size += GLINK_ENTRY_SIZE;
|
| 5241 |
|
|
if (h == htab->tls_get_addr
|
| 5242 |
|
|
&& !htab->no_tls_get_addr_opt)
|
| 5243 |
|
|
s->size += TLS_GET_ADDR_GLINK_SIZE - GLINK_ENTRY_SIZE;
|
| 5244 |
|
|
}
|
| 5245 |
|
|
if (!doneone
|
| 5246 |
|
|
&& !info->shared
|
| 5247 |
|
|
&& h->def_dynamic
|
| 5248 |
|
|
&& !h->def_regular)
|
| 5249 |
|
|
{
|
| 5250 |
|
|
h->root.u.def.section = s;
|
| 5251 |
|
|
h->root.u.def.value = glink_offset;
|
| 5252 |
|
|
}
|
| 5253 |
|
|
ent->glink_offset = glink_offset;
|
| 5254 |
|
|
|
| 5255 |
|
|
if (htab->emit_stub_syms
|
| 5256 |
|
|
&& !add_stub_sym (ent, h, info))
|
| 5257 |
|
|
return FALSE;
|
| 5258 |
|
|
}
|
| 5259 |
|
|
else
|
| 5260 |
|
|
{
|
| 5261 |
|
|
if (!doneone)
|
| 5262 |
|
|
{
|
| 5263 |
|
|
/* If this is the first .plt entry, make room
|
| 5264 |
|
|
for the special first entry. */
|
| 5265 |
|
|
if (s->size == 0)
|
| 5266 |
|
|
s->size += htab->plt_initial_entry_size;
|
| 5267 |
|
|
|
| 5268 |
|
|
/* The PowerPC PLT is actually composed of two
|
| 5269 |
|
|
parts, the first part is 2 words (for a load
|
| 5270 |
|
|
and a jump), and then there is a remaining
|
| 5271 |
|
|
word available at the end. */
|
| 5272 |
|
|
plt_offset = (htab->plt_initial_entry_size
|
| 5273 |
|
|
+ (htab->plt_slot_size
|
| 5274 |
|
|
* ((s->size
|
| 5275 |
|
|
- htab->plt_initial_entry_size)
|
| 5276 |
|
|
/ htab->plt_entry_size)));
|
| 5277 |
|
|
|
| 5278 |
|
|
/* If this symbol is not defined in a regular
|
| 5279 |
|
|
file, and we are not generating a shared
|
| 5280 |
|
|
library, then set the symbol to this location
|
| 5281 |
|
|
in the .plt. This is to avoid text
|
| 5282 |
|
|
relocations, and is required to make
|
| 5283 |
|
|
function pointers compare as equal between
|
| 5284 |
|
|
the normal executable and the shared library. */
|
| 5285 |
|
|
if (! info->shared
|
| 5286 |
|
|
&& h->def_dynamic
|
| 5287 |
|
|
&& !h->def_regular)
|
| 5288 |
|
|
{
|
| 5289 |
|
|
h->root.u.def.section = s;
|
| 5290 |
|
|
h->root.u.def.value = plt_offset;
|
| 5291 |
|
|
}
|
| 5292 |
|
|
|
| 5293 |
|
|
/* Make room for this entry. */
|
| 5294 |
|
|
s->size += htab->plt_entry_size;
|
| 5295 |
|
|
/* After the 8192nd entry, room for two entries
|
| 5296 |
|
|
is allocated. */
|
| 5297 |
|
|
if (htab->plt_type == PLT_OLD
|
| 5298 |
|
|
&& (s->size - htab->plt_initial_entry_size)
|
| 5299 |
|
|
/ htab->plt_entry_size
|
| 5300 |
|
|
> PLT_NUM_SINGLE_ENTRIES)
|
| 5301 |
|
|
s->size += htab->plt_entry_size;
|
| 5302 |
|
|
}
|
| 5303 |
|
|
ent->plt.offset = plt_offset;
|
| 5304 |
|
|
}
|
| 5305 |
|
|
|
| 5306 |
|
|
/* We also need to make an entry in the .rela.plt section. */
|
| 5307 |
|
|
if (!doneone)
|
| 5308 |
|
|
{
|
| 5309 |
|
|
if (!htab->elf.dynamic_sections_created
|
| 5310 |
|
|
|| h->dynindx == -1)
|
| 5311 |
|
|
htab->reliplt->size += sizeof (Elf32_External_Rela);
|
| 5312 |
|
|
else
|
| 5313 |
|
|
{
|
| 5314 |
|
|
htab->relplt->size += sizeof (Elf32_External_Rela);
|
| 5315 |
|
|
|
| 5316 |
|
|
if (htab->plt_type == PLT_VXWORKS)
|
| 5317 |
|
|
{
|
| 5318 |
|
|
/* Allocate space for the unloaded relocations. */
|
| 5319 |
|
|
if (!info->shared
|
| 5320 |
|
|
&& htab->elf.dynamic_sections_created)
|
| 5321 |
|
|
{
|
| 5322 |
|
|
if (ent->plt.offset
|
| 5323 |
|
|
== (bfd_vma) htab->plt_initial_entry_size)
|
| 5324 |
|
|
{
|
| 5325 |
|
|
htab->srelplt2->size
|
| 5326 |
|
|
+= (sizeof (Elf32_External_Rela)
|
| 5327 |
|
|
* VXWORKS_PLTRESOLVE_RELOCS);
|
| 5328 |
|
|
}
|
| 5329 |
|
|
|
| 5330 |
|
|
htab->srelplt2->size
|
| 5331 |
|
|
+= (sizeof (Elf32_External_Rela)
|
| 5332 |
|
|
* VXWORKS_PLT_NON_JMP_SLOT_RELOCS);
|
| 5333 |
|
|
}
|
| 5334 |
|
|
|
| 5335 |
|
|
/* Every PLT entry has an associated GOT entry in
|
| 5336 |
|
|
.got.plt. */
|
| 5337 |
|
|
htab->sgotplt->size += 4;
|
| 5338 |
|
|
}
|
| 5339 |
|
|
}
|
| 5340 |
|
|
doneone = TRUE;
|
| 5341 |
|
|
}
|
| 5342 |
|
|
}
|
| 5343 |
|
|
else
|
| 5344 |
|
|
ent->plt.offset = (bfd_vma) -1;
|
| 5345 |
|
|
}
|
| 5346 |
|
|
else
|
| 5347 |
|
|
ent->plt.offset = (bfd_vma) -1;
|
| 5348 |
|
|
|
| 5349 |
|
|
if (!doneone)
|
| 5350 |
|
|
{
|
| 5351 |
|
|
h->plt.plist = NULL;
|
| 5352 |
|
|
h->needs_plt = 0;
|
| 5353 |
|
|
}
|
| 5354 |
|
|
}
|
| 5355 |
|
|
else
|
| 5356 |
|
|
{
|
| 5357 |
|
|
h->plt.plist = NULL;
|
| 5358 |
|
|
h->needs_plt = 0;
|
| 5359 |
|
|
}
|
| 5360 |
|
|
|
| 5361 |
|
|
eh = (struct ppc_elf_link_hash_entry *) h;
|
| 5362 |
|
|
if (eh->elf.got.refcount > 0)
|
| 5363 |
|
|
{
|
| 5364 |
|
|
bfd_boolean dyn;
|
| 5365 |
|
|
unsigned int need;
|
| 5366 |
|
|
|
| 5367 |
|
|
/* Make sure this symbol is output as a dynamic symbol. */
|
| 5368 |
|
|
if (eh->elf.dynindx == -1
|
| 5369 |
|
|
&& !eh->elf.forced_local
|
| 5370 |
|
|
&& eh->elf.type != STT_GNU_IFUNC
|
| 5371 |
|
|
&& htab->elf.dynamic_sections_created)
|
| 5372 |
|
|
{
|
| 5373 |
|
|
if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
|
| 5374 |
|
|
return FALSE;
|
| 5375 |
|
|
}
|
| 5376 |
|
|
|
| 5377 |
|
|
need = 0;
|
| 5378 |
|
|
if ((eh->tls_mask & TLS_TLS) != 0)
|
| 5379 |
|
|
{
|
| 5380 |
|
|
if ((eh->tls_mask & TLS_LD) != 0)
|
| 5381 |
|
|
{
|
| 5382 |
|
|
if (!eh->elf.def_dynamic)
|
| 5383 |
|
|
/* We'll just use htab->tlsld_got.offset. This should
|
| 5384 |
|
|
always be the case. It's a little odd if we have
|
| 5385 |
|
|
a local dynamic reloc against a non-local symbol. */
|
| 5386 |
|
|
htab->tlsld_got.refcount += 1;
|
| 5387 |
|
|
else
|
| 5388 |
|
|
need += 8;
|
| 5389 |
|
|
}
|
| 5390 |
|
|
if ((eh->tls_mask & TLS_GD) != 0)
|
| 5391 |
|
|
need += 8;
|
| 5392 |
|
|
if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
|
| 5393 |
|
|
need += 4;
|
| 5394 |
|
|
if ((eh->tls_mask & TLS_DTPREL) != 0)
|
| 5395 |
|
|
need += 4;
|
| 5396 |
|
|
}
|
| 5397 |
|
|
else
|
| 5398 |
|
|
need += 4;
|
| 5399 |
|
|
if (need == 0)
|
| 5400 |
|
|
eh->elf.got.offset = (bfd_vma) -1;
|
| 5401 |
|
|
else
|
| 5402 |
|
|
{
|
| 5403 |
|
|
eh->elf.got.offset = allocate_got (htab, need);
|
| 5404 |
|
|
dyn = htab->elf.dynamic_sections_created;
|
| 5405 |
|
|
if ((info->shared
|
| 5406 |
|
|
|| WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
|
| 5407 |
|
|
&& (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
|
| 5408 |
|
|
|| eh->elf.root.type != bfd_link_hash_undefweak))
|
| 5409 |
|
|
{
|
| 5410 |
|
|
asection *rsec = htab->relgot;
|
| 5411 |
|
|
/* All the entries we allocated need relocs.
|
| 5412 |
|
|
Except LD only needs one. */
|
| 5413 |
|
|
if ((eh->tls_mask & TLS_LD) != 0
|
| 5414 |
|
|
&& eh->elf.def_dynamic)
|
| 5415 |
|
|
need -= 4;
|
| 5416 |
|
|
rsec->size += need * (sizeof (Elf32_External_Rela) / 4);
|
| 5417 |
|
|
}
|
| 5418 |
|
|
}
|
| 5419 |
|
|
}
|
| 5420 |
|
|
else
|
| 5421 |
|
|
eh->elf.got.offset = (bfd_vma) -1;
|
| 5422 |
|
|
|
| 5423 |
|
|
if (eh->dyn_relocs == NULL
|
| 5424 |
|
|
|| !htab->elf.dynamic_sections_created)
|
| 5425 |
|
|
return TRUE;
|
| 5426 |
|
|
|
| 5427 |
|
|
/* In the shared -Bsymbolic case, discard space allocated for
|
| 5428 |
|
|
dynamic pc-relative relocs against symbols which turn out to be
|
| 5429 |
|
|
defined in regular objects. For the normal shared case, discard
|
| 5430 |
|
|
space for relocs that have become local due to symbol visibility
|
| 5431 |
|
|
changes. */
|
| 5432 |
|
|
|
| 5433 |
|
|
if (info->shared)
|
| 5434 |
|
|
{
|
| 5435 |
|
|
/* Relocs that use pc_count are those that appear on a call insn,
|
| 5436 |
|
|
or certain REL relocs (see must_be_dyn_reloc) that can be
|
| 5437 |
|
|
generated via assembly. We want calls to protected symbols to
|
| 5438 |
|
|
resolve directly to the function rather than going via the plt.
|
| 5439 |
|
|
If people want function pointer comparisons to work as expected
|
| 5440 |
|
|
then they should avoid writing weird assembly. */
|
| 5441 |
|
|
if (SYMBOL_CALLS_LOCAL (info, h))
|
| 5442 |
|
|
{
|
| 5443 |
|
|
struct elf_dyn_relocs **pp;
|
| 5444 |
|
|
|
| 5445 |
|
|
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
|
| 5446 |
|
|
{
|
| 5447 |
|
|
p->count -= p->pc_count;
|
| 5448 |
|
|
p->pc_count = 0;
|
| 5449 |
|
|
if (p->count == 0)
|
| 5450 |
|
|
*pp = p->next;
|
| 5451 |
|
|
else
|
| 5452 |
|
|
pp = &p->next;
|
| 5453 |
|
|
}
|
| 5454 |
|
|
}
|
| 5455 |
|
|
|
| 5456 |
|
|
if (htab->is_vxworks)
|
| 5457 |
|
|
{
|
| 5458 |
|
|
struct elf_dyn_relocs **pp;
|
| 5459 |
|
|
|
| 5460 |
|
|
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
|
| 5461 |
|
|
{
|
| 5462 |
|
|
if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
|
| 5463 |
|
|
*pp = p->next;
|
| 5464 |
|
|
else
|
| 5465 |
|
|
pp = &p->next;
|
| 5466 |
|
|
}
|
| 5467 |
|
|
}
|
| 5468 |
|
|
|
| 5469 |
|
|
/* Discard relocs on undefined symbols that must be local. */
|
| 5470 |
|
|
if (eh->dyn_relocs != NULL
|
| 5471 |
|
|
&& h->root.type == bfd_link_hash_undefined
|
| 5472 |
|
|
&& (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
|
| 5473 |
|
|
|| ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
|
| 5474 |
|
|
eh->dyn_relocs = NULL;
|
| 5475 |
|
|
|
| 5476 |
|
|
/* Also discard relocs on undefined weak syms with non-default
|
| 5477 |
|
|
visibility. */
|
| 5478 |
|
|
if (eh->dyn_relocs != NULL
|
| 5479 |
|
|
&& h->root.type == bfd_link_hash_undefweak)
|
| 5480 |
|
|
{
|
| 5481 |
|
|
if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
|
| 5482 |
|
|
eh->dyn_relocs = NULL;
|
| 5483 |
|
|
|
| 5484 |
|
|
/* Make sure undefined weak symbols are output as a dynamic
|
| 5485 |
|
|
symbol in PIEs. */
|
| 5486 |
|
|
else if (h->dynindx == -1
|
| 5487 |
|
|
&& !h->forced_local
|
| 5488 |
|
|
&& !h->def_regular)
|
| 5489 |
|
|
{
|
| 5490 |
|
|
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
| 5491 |
|
|
return FALSE;
|
| 5492 |
|
|
}
|
| 5493 |
|
|
}
|
| 5494 |
|
|
}
|
| 5495 |
|
|
else if (ELIMINATE_COPY_RELOCS)
|
| 5496 |
|
|
{
|
| 5497 |
|
|
/* For the non-shared case, discard space for relocs against
|
| 5498 |
|
|
symbols which turn out to need copy relocs or are not
|
| 5499 |
|
|
dynamic. */
|
| 5500 |
|
|
|
| 5501 |
|
|
if (!h->non_got_ref
|
| 5502 |
|
|
&& !h->def_regular)
|
| 5503 |
|
|
{
|
| 5504 |
|
|
/* Make sure this symbol is output as a dynamic symbol.
|
| 5505 |
|
|
Undefined weak syms won't yet be marked as dynamic. */
|
| 5506 |
|
|
if (h->dynindx == -1
|
| 5507 |
|
|
&& !h->forced_local)
|
| 5508 |
|
|
{
|
| 5509 |
|
|
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
| 5510 |
|
|
return FALSE;
|
| 5511 |
|
|
}
|
| 5512 |
|
|
|
| 5513 |
|
|
/* If that succeeded, we know we'll be keeping all the
|
| 5514 |
|
|
relocs. */
|
| 5515 |
|
|
if (h->dynindx != -1)
|
| 5516 |
|
|
goto keep;
|
| 5517 |
|
|
}
|
| 5518 |
|
|
|
| 5519 |
|
|
eh->dyn_relocs = NULL;
|
| 5520 |
|
|
|
| 5521 |
|
|
keep: ;
|
| 5522 |
|
|
}
|
| 5523 |
|
|
|
| 5524 |
|
|
/* Finally, allocate space. */
|
| 5525 |
|
|
for (p = eh->dyn_relocs; p != NULL; p = p->next)
|
| 5526 |
|
|
{
|
| 5527 |
|
|
asection *sreloc = elf_section_data (p->sec)->sreloc;
|
| 5528 |
|
|
if (!htab->elf.dynamic_sections_created)
|
| 5529 |
|
|
sreloc = htab->reliplt;
|
| 5530 |
|
|
sreloc->size += p->count * sizeof (Elf32_External_Rela);
|
| 5531 |
|
|
}
|
| 5532 |
|
|
|
| 5533 |
|
|
return TRUE;
|
| 5534 |
|
|
}
|
| 5535 |
|
|
|
| 5536 |
|
|
/* Set DF_TEXTREL if we find any dynamic relocs that apply to
|
| 5537 |
|
|
read-only sections. */
|
| 5538 |
|
|
|
| 5539 |
|
|
static bfd_boolean
|
| 5540 |
|
|
maybe_set_textrel (struct elf_link_hash_entry *h, void *info)
|
| 5541 |
|
|
{
|
| 5542 |
|
|
if (h->root.type == bfd_link_hash_indirect)
|
| 5543 |
|
|
return TRUE;
|
| 5544 |
|
|
|
| 5545 |
|
|
if (readonly_dynrelocs (h))
|
| 5546 |
|
|
{
|
| 5547 |
|
|
((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
|
| 5548 |
|
|
|
| 5549 |
|
|
/* Not an error, just cut short the traversal. */
|
| 5550 |
|
|
return FALSE;
|
| 5551 |
|
|
}
|
| 5552 |
|
|
return TRUE;
|
| 5553 |
|
|
}
|
| 5554 |
|
|
|
| 5555 |
161 |
khays |
static const unsigned char glink_eh_frame_cie[] =
|
| 5556 |
|
|
{
|
| 5557 |
|
|
0, 0, 0, 16, /* length. */
|
| 5558 |
|
|
0, 0, 0, 0, /* id. */
|
| 5559 |
|
|
1, /* CIE version. */
|
| 5560 |
|
|
'z', 'R', 0, /* Augmentation string. */
|
| 5561 |
|
|
4, /* Code alignment. */
|
| 5562 |
|
|
0x7c, /* Data alignment. */
|
| 5563 |
|
|
65, /* RA reg. */
|
| 5564 |
|
|
1, /* Augmentation size. */
|
| 5565 |
|
|
DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */
|
| 5566 |
|
|
DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */
|
| 5567 |
|
|
};
|
| 5568 |
|
|
|
| 5569 |
14 |
khays |
/* Set the sizes of the dynamic sections. */
|
| 5570 |
|
|
|
| 5571 |
|
|
static bfd_boolean
|
| 5572 |
|
|
ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
|
| 5573 |
|
|
struct bfd_link_info *info)
|
| 5574 |
|
|
{
|
| 5575 |
|
|
struct ppc_elf_link_hash_table *htab;
|
| 5576 |
|
|
asection *s;
|
| 5577 |
|
|
bfd_boolean relocs;
|
| 5578 |
|
|
bfd *ibfd;
|
| 5579 |
|
|
|
| 5580 |
|
|
#ifdef DEBUG
|
| 5581 |
|
|
fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
|
| 5582 |
|
|
#endif
|
| 5583 |
|
|
|
| 5584 |
|
|
htab = ppc_elf_hash_table (info);
|
| 5585 |
|
|
BFD_ASSERT (htab->elf.dynobj != NULL);
|
| 5586 |
|
|
|
| 5587 |
|
|
if (elf_hash_table (info)->dynamic_sections_created)
|
| 5588 |
|
|
{
|
| 5589 |
|
|
/* Set the contents of the .interp section to the interpreter. */
|
| 5590 |
|
|
if (info->executable)
|
| 5591 |
|
|
{
|
| 5592 |
|
|
s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
|
| 5593 |
|
|
BFD_ASSERT (s != NULL);
|
| 5594 |
|
|
s->size = sizeof ELF_DYNAMIC_INTERPRETER;
|
| 5595 |
|
|
s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
|
| 5596 |
|
|
}
|
| 5597 |
|
|
}
|
| 5598 |
|
|
|
| 5599 |
|
|
if (htab->plt_type == PLT_OLD)
|
| 5600 |
|
|
htab->got_header_size = 16;
|
| 5601 |
|
|
else if (htab->plt_type == PLT_NEW)
|
| 5602 |
|
|
htab->got_header_size = 12;
|
| 5603 |
|
|
|
| 5604 |
|
|
/* Set up .got offsets for local syms, and space for local dynamic
|
| 5605 |
|
|
relocs. */
|
| 5606 |
|
|
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
|
| 5607 |
|
|
{
|
| 5608 |
|
|
bfd_signed_vma *local_got;
|
| 5609 |
|
|
bfd_signed_vma *end_local_got;
|
| 5610 |
|
|
struct plt_entry **local_plt;
|
| 5611 |
|
|
struct plt_entry **end_local_plt;
|
| 5612 |
|
|
char *lgot_masks;
|
| 5613 |
|
|
bfd_size_type locsymcount;
|
| 5614 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 5615 |
|
|
|
| 5616 |
|
|
if (!is_ppc_elf (ibfd))
|
| 5617 |
|
|
continue;
|
| 5618 |
|
|
|
| 5619 |
|
|
for (s = ibfd->sections; s != NULL; s = s->next)
|
| 5620 |
|
|
{
|
| 5621 |
|
|
struct elf_dyn_relocs *p;
|
| 5622 |
|
|
|
| 5623 |
|
|
for (p = ((struct elf_dyn_relocs *)
|
| 5624 |
|
|
elf_section_data (s)->local_dynrel);
|
| 5625 |
|
|
p != NULL;
|
| 5626 |
|
|
p = p->next)
|
| 5627 |
|
|
{
|
| 5628 |
|
|
if (!bfd_is_abs_section (p->sec)
|
| 5629 |
|
|
&& bfd_is_abs_section (p->sec->output_section))
|
| 5630 |
|
|
{
|
| 5631 |
|
|
/* Input section has been discarded, either because
|
| 5632 |
|
|
it is a copy of a linkonce section or due to
|
| 5633 |
|
|
linker script /DISCARD/, so we'll be discarding
|
| 5634 |
|
|
the relocs too. */
|
| 5635 |
|
|
}
|
| 5636 |
|
|
else if (htab->is_vxworks
|
| 5637 |
|
|
&& strcmp (p->sec->output_section->name,
|
| 5638 |
|
|
".tls_vars") == 0)
|
| 5639 |
|
|
{
|
| 5640 |
|
|
/* Relocations in vxworks .tls_vars sections are
|
| 5641 |
|
|
handled specially by the loader. */
|
| 5642 |
|
|
}
|
| 5643 |
|
|
else if (p->count != 0)
|
| 5644 |
|
|
{
|
| 5645 |
|
|
asection *sreloc = elf_section_data (p->sec)->sreloc;
|
| 5646 |
|
|
if (!htab->elf.dynamic_sections_created)
|
| 5647 |
|
|
sreloc = htab->reliplt;
|
| 5648 |
|
|
sreloc->size += p->count * sizeof (Elf32_External_Rela);
|
| 5649 |
|
|
if ((p->sec->output_section->flags
|
| 5650 |
|
|
& (SEC_READONLY | SEC_ALLOC))
|
| 5651 |
|
|
== (SEC_READONLY | SEC_ALLOC))
|
| 5652 |
|
|
info->flags |= DF_TEXTREL;
|
| 5653 |
|
|
}
|
| 5654 |
|
|
}
|
| 5655 |
|
|
}
|
| 5656 |
|
|
|
| 5657 |
|
|
local_got = elf_local_got_refcounts (ibfd);
|
| 5658 |
|
|
if (!local_got)
|
| 5659 |
|
|
continue;
|
| 5660 |
|
|
|
| 5661 |
|
|
symtab_hdr = &elf_symtab_hdr (ibfd);
|
| 5662 |
|
|
locsymcount = symtab_hdr->sh_info;
|
| 5663 |
|
|
end_local_got = local_got + locsymcount;
|
| 5664 |
|
|
local_plt = (struct plt_entry **) end_local_got;
|
| 5665 |
|
|
end_local_plt = local_plt + locsymcount;
|
| 5666 |
|
|
lgot_masks = (char *) end_local_plt;
|
| 5667 |
|
|
|
| 5668 |
|
|
for (; local_got < end_local_got; ++local_got, ++lgot_masks)
|
| 5669 |
|
|
if (*local_got > 0)
|
| 5670 |
|
|
{
|
| 5671 |
|
|
unsigned int need = 0;
|
| 5672 |
|
|
if ((*lgot_masks & TLS_TLS) != 0)
|
| 5673 |
|
|
{
|
| 5674 |
|
|
if ((*lgot_masks & TLS_GD) != 0)
|
| 5675 |
|
|
need += 8;
|
| 5676 |
|
|
if ((*lgot_masks & TLS_LD) != 0)
|
| 5677 |
|
|
htab->tlsld_got.refcount += 1;
|
| 5678 |
|
|
if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
|
| 5679 |
|
|
need += 4;
|
| 5680 |
|
|
if ((*lgot_masks & TLS_DTPREL) != 0)
|
| 5681 |
|
|
need += 4;
|
| 5682 |
|
|
}
|
| 5683 |
|
|
else
|
| 5684 |
|
|
need += 4;
|
| 5685 |
|
|
if (need == 0)
|
| 5686 |
|
|
*local_got = (bfd_vma) -1;
|
| 5687 |
|
|
else
|
| 5688 |
|
|
{
|
| 5689 |
|
|
*local_got = allocate_got (htab, need);
|
| 5690 |
|
|
if (info->shared)
|
| 5691 |
|
|
htab->relgot->size += (need
|
| 5692 |
|
|
* (sizeof (Elf32_External_Rela) / 4));
|
| 5693 |
|
|
}
|
| 5694 |
|
|
}
|
| 5695 |
|
|
else
|
| 5696 |
|
|
*local_got = (bfd_vma) -1;
|
| 5697 |
|
|
|
| 5698 |
|
|
if (htab->is_vxworks)
|
| 5699 |
|
|
continue;
|
| 5700 |
|
|
|
| 5701 |
|
|
/* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
|
| 5702 |
|
|
for (; local_plt < end_local_plt; ++local_plt)
|
| 5703 |
|
|
{
|
| 5704 |
|
|
struct plt_entry *ent;
|
| 5705 |
|
|
bfd_boolean doneone = FALSE;
|
| 5706 |
|
|
bfd_vma plt_offset = 0, glink_offset = 0;
|
| 5707 |
|
|
|
| 5708 |
|
|
for (ent = *local_plt; ent != NULL; ent = ent->next)
|
| 5709 |
|
|
if (ent->plt.refcount > 0)
|
| 5710 |
|
|
{
|
| 5711 |
|
|
s = htab->iplt;
|
| 5712 |
|
|
|
| 5713 |
|
|
if (!doneone)
|
| 5714 |
|
|
{
|
| 5715 |
|
|
plt_offset = s->size;
|
| 5716 |
|
|
s->size += 4;
|
| 5717 |
|
|
}
|
| 5718 |
|
|
ent->plt.offset = plt_offset;
|
| 5719 |
|
|
|
| 5720 |
|
|
s = htab->glink;
|
| 5721 |
|
|
if (!doneone || info->shared)
|
| 5722 |
|
|
{
|
| 5723 |
|
|
glink_offset = s->size;
|
| 5724 |
|
|
s->size += GLINK_ENTRY_SIZE;
|
| 5725 |
|
|
}
|
| 5726 |
|
|
ent->glink_offset = glink_offset;
|
| 5727 |
|
|
|
| 5728 |
|
|
if (!doneone)
|
| 5729 |
|
|
{
|
| 5730 |
|
|
htab->reliplt->size += sizeof (Elf32_External_Rela);
|
| 5731 |
|
|
doneone = TRUE;
|
| 5732 |
|
|
}
|
| 5733 |
|
|
}
|
| 5734 |
|
|
else
|
| 5735 |
|
|
ent->plt.offset = (bfd_vma) -1;
|
| 5736 |
|
|
}
|
| 5737 |
|
|
}
|
| 5738 |
|
|
|
| 5739 |
|
|
/* Allocate space for global sym dynamic relocs. */
|
| 5740 |
|
|
elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
|
| 5741 |
|
|
|
| 5742 |
|
|
if (htab->tlsld_got.refcount > 0)
|
| 5743 |
|
|
{
|
| 5744 |
|
|
htab->tlsld_got.offset = allocate_got (htab, 8);
|
| 5745 |
|
|
if (info->shared)
|
| 5746 |
|
|
htab->relgot->size += sizeof (Elf32_External_Rela);
|
| 5747 |
|
|
}
|
| 5748 |
|
|
else
|
| 5749 |
|
|
htab->tlsld_got.offset = (bfd_vma) -1;
|
| 5750 |
|
|
|
| 5751 |
|
|
if (htab->got != NULL && htab->plt_type != PLT_VXWORKS)
|
| 5752 |
|
|
{
|
| 5753 |
|
|
unsigned int g_o_t = 32768;
|
| 5754 |
|
|
|
| 5755 |
|
|
/* If we haven't allocated the header, do so now. When we get here,
|
| 5756 |
|
|
for old plt/got the got size will be 0 to 32764 (not allocated),
|
| 5757 |
|
|
or 32780 to 65536 (header allocated). For new plt/got, the
|
| 5758 |
|
|
corresponding ranges are 0 to 32768 and 32780 to 65536. */
|
| 5759 |
|
|
if (htab->got->size <= 32768)
|
| 5760 |
|
|
{
|
| 5761 |
|
|
g_o_t = htab->got->size;
|
| 5762 |
|
|
if (htab->plt_type == PLT_OLD)
|
| 5763 |
|
|
g_o_t += 4;
|
| 5764 |
|
|
htab->got->size += htab->got_header_size;
|
| 5765 |
|
|
}
|
| 5766 |
|
|
|
| 5767 |
|
|
htab->elf.hgot->root.u.def.value = g_o_t;
|
| 5768 |
|
|
}
|
| 5769 |
|
|
if (info->shared)
|
| 5770 |
|
|
{
|
| 5771 |
|
|
struct elf_link_hash_entry *sda = htab->sdata[0].sym;
|
| 5772 |
|
|
if (sda != NULL
|
| 5773 |
|
|
&& !(sda->root.type == bfd_link_hash_defined
|
| 5774 |
|
|
|| sda->root.type == bfd_link_hash_defweak))
|
| 5775 |
|
|
{
|
| 5776 |
|
|
sda->root.type = bfd_link_hash_defined;
|
| 5777 |
|
|
sda->root.u.def.section = htab->elf.hgot->root.u.def.section;
|
| 5778 |
|
|
sda->root.u.def.value = htab->elf.hgot->root.u.def.value;
|
| 5779 |
|
|
}
|
| 5780 |
|
|
}
|
| 5781 |
|
|
|
| 5782 |
|
|
if (htab->glink != NULL
|
| 5783 |
|
|
&& htab->glink->size != 0
|
| 5784 |
|
|
&& htab->elf.dynamic_sections_created)
|
| 5785 |
|
|
{
|
| 5786 |
|
|
htab->glink_pltresolve = htab->glink->size;
|
| 5787 |
|
|
/* Space for the branch table. */
|
| 5788 |
|
|
htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
|
| 5789 |
|
|
/* Pad out to align the start of PLTresolve. */
|
| 5790 |
|
|
htab->glink->size += -htab->glink->size & 15;
|
| 5791 |
|
|
htab->glink->size += GLINK_PLTRESOLVE;
|
| 5792 |
|
|
|
| 5793 |
|
|
if (htab->emit_stub_syms)
|
| 5794 |
|
|
{
|
| 5795 |
|
|
struct elf_link_hash_entry *sh;
|
| 5796 |
|
|
sh = elf_link_hash_lookup (&htab->elf, "__glink",
|
| 5797 |
|
|
TRUE, FALSE, FALSE);
|
| 5798 |
|
|
if (sh == NULL)
|
| 5799 |
|
|
return FALSE;
|
| 5800 |
|
|
if (sh->root.type == bfd_link_hash_new)
|
| 5801 |
|
|
{
|
| 5802 |
|
|
sh->root.type = bfd_link_hash_defined;
|
| 5803 |
|
|
sh->root.u.def.section = htab->glink;
|
| 5804 |
|
|
sh->root.u.def.value = htab->glink_pltresolve;
|
| 5805 |
|
|
sh->ref_regular = 1;
|
| 5806 |
|
|
sh->def_regular = 1;
|
| 5807 |
|
|
sh->ref_regular_nonweak = 1;
|
| 5808 |
|
|
sh->forced_local = 1;
|
| 5809 |
|
|
sh->non_elf = 0;
|
| 5810 |
|
|
}
|
| 5811 |
|
|
sh = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve",
|
| 5812 |
|
|
TRUE, FALSE, FALSE);
|
| 5813 |
|
|
if (sh == NULL)
|
| 5814 |
|
|
return FALSE;
|
| 5815 |
|
|
if (sh->root.type == bfd_link_hash_new)
|
| 5816 |
|
|
{
|
| 5817 |
|
|
sh->root.type = bfd_link_hash_defined;
|
| 5818 |
|
|
sh->root.u.def.section = htab->glink;
|
| 5819 |
|
|
sh->root.u.def.value = htab->glink->size - GLINK_PLTRESOLVE;
|
| 5820 |
|
|
sh->ref_regular = 1;
|
| 5821 |
|
|
sh->def_regular = 1;
|
| 5822 |
|
|
sh->ref_regular_nonweak = 1;
|
| 5823 |
|
|
sh->forced_local = 1;
|
| 5824 |
|
|
sh->non_elf = 0;
|
| 5825 |
|
|
}
|
| 5826 |
|
|
}
|
| 5827 |
|
|
}
|
| 5828 |
|
|
|
| 5829 |
161 |
khays |
if (htab->glink != NULL
|
| 5830 |
|
|
&& htab->glink->size != 0
|
| 5831 |
|
|
&& htab->glink_eh_frame != NULL
|
| 5832 |
|
|
&& !bfd_is_abs_section (htab->glink_eh_frame->output_section))
|
| 5833 |
|
|
{
|
| 5834 |
|
|
s = htab->glink_eh_frame;
|
| 5835 |
|
|
s->size = sizeof (glink_eh_frame_cie) + 20;
|
| 5836 |
|
|
if (info->shared)
|
| 5837 |
|
|
{
|
| 5838 |
|
|
s->size += 4;
|
| 5839 |
|
|
if (htab->glink->size - GLINK_PLTRESOLVE + 8 >= 256)
|
| 5840 |
|
|
s->size += 4;
|
| 5841 |
|
|
}
|
| 5842 |
|
|
}
|
| 5843 |
|
|
|
| 5844 |
14 |
khays |
/* We've now determined the sizes of the various dynamic sections.
|
| 5845 |
|
|
Allocate memory for them. */
|
| 5846 |
|
|
relocs = FALSE;
|
| 5847 |
|
|
for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
|
| 5848 |
|
|
{
|
| 5849 |
|
|
bfd_boolean strip_section = TRUE;
|
| 5850 |
|
|
|
| 5851 |
|
|
if ((s->flags & SEC_LINKER_CREATED) == 0)
|
| 5852 |
|
|
continue;
|
| 5853 |
|
|
|
| 5854 |
|
|
if (s == htab->plt
|
| 5855 |
|
|
|| s == htab->got)
|
| 5856 |
|
|
{
|
| 5857 |
|
|
/* We'd like to strip these sections if they aren't needed, but if
|
| 5858 |
|
|
we've exported dynamic symbols from them we must leave them.
|
| 5859 |
|
|
It's too late to tell BFD to get rid of the symbols. */
|
| 5860 |
|
|
if (htab->elf.hplt != NULL)
|
| 5861 |
|
|
strip_section = FALSE;
|
| 5862 |
|
|
/* Strip this section if we don't need it; see the
|
| 5863 |
|
|
comment below. */
|
| 5864 |
|
|
}
|
| 5865 |
|
|
else if (s == htab->iplt
|
| 5866 |
|
|
|| s == htab->glink
|
| 5867 |
161 |
khays |
|| s == htab->glink_eh_frame
|
| 5868 |
14 |
khays |
|| s == htab->sgotplt
|
| 5869 |
|
|
|| s == htab->sbss
|
| 5870 |
|
|
|| s == htab->dynbss
|
| 5871 |
|
|
|| s == htab->dynsbss
|
| 5872 |
|
|
|| s == htab->sdata[0].section
|
| 5873 |
|
|
|| s == htab->sdata[1].section)
|
| 5874 |
|
|
{
|
| 5875 |
|
|
/* Strip these too. */
|
| 5876 |
|
|
}
|
| 5877 |
|
|
else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela"))
|
| 5878 |
|
|
{
|
| 5879 |
|
|
if (s->size != 0)
|
| 5880 |
|
|
{
|
| 5881 |
|
|
/* Remember whether there are any relocation sections. */
|
| 5882 |
|
|
relocs = TRUE;
|
| 5883 |
|
|
|
| 5884 |
|
|
/* We use the reloc_count field as a counter if we need
|
| 5885 |
|
|
to copy relocs into the output file. */
|
| 5886 |
|
|
s->reloc_count = 0;
|
| 5887 |
|
|
}
|
| 5888 |
|
|
}
|
| 5889 |
|
|
else
|
| 5890 |
|
|
{
|
| 5891 |
|
|
/* It's not one of our sections, so don't allocate space. */
|
| 5892 |
|
|
continue;
|
| 5893 |
|
|
}
|
| 5894 |
|
|
|
| 5895 |
|
|
if (s->size == 0 && strip_section)
|
| 5896 |
|
|
{
|
| 5897 |
|
|
/* If we don't need this section, strip it from the
|
| 5898 |
|
|
output file. This is mostly to handle .rela.bss and
|
| 5899 |
|
|
.rela.plt. We must create both sections in
|
| 5900 |
|
|
create_dynamic_sections, because they must be created
|
| 5901 |
|
|
before the linker maps input sections to output
|
| 5902 |
|
|
sections. The linker does that before
|
| 5903 |
|
|
adjust_dynamic_symbol is called, and it is that
|
| 5904 |
|
|
function which decides whether anything needs to go
|
| 5905 |
|
|
into these sections. */
|
| 5906 |
|
|
s->flags |= SEC_EXCLUDE;
|
| 5907 |
|
|
continue;
|
| 5908 |
|
|
}
|
| 5909 |
|
|
|
| 5910 |
|
|
if ((s->flags & SEC_HAS_CONTENTS) == 0)
|
| 5911 |
|
|
continue;
|
| 5912 |
|
|
|
| 5913 |
|
|
/* Allocate memory for the section contents. */
|
| 5914 |
|
|
s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
|
| 5915 |
|
|
if (s->contents == NULL)
|
| 5916 |
|
|
return FALSE;
|
| 5917 |
|
|
}
|
| 5918 |
|
|
|
| 5919 |
|
|
if (htab->elf.dynamic_sections_created)
|
| 5920 |
|
|
{
|
| 5921 |
|
|
/* Add some entries to the .dynamic section. We fill in the
|
| 5922 |
|
|
values later, in ppc_elf_finish_dynamic_sections, but we
|
| 5923 |
|
|
must add the entries now so that we get the correct size for
|
| 5924 |
|
|
the .dynamic section. The DT_DEBUG entry is filled in by the
|
| 5925 |
|
|
dynamic linker and used by the debugger. */
|
| 5926 |
|
|
#define add_dynamic_entry(TAG, VAL) \
|
| 5927 |
|
|
_bfd_elf_add_dynamic_entry (info, TAG, VAL)
|
| 5928 |
|
|
|
| 5929 |
|
|
if (info->executable)
|
| 5930 |
|
|
{
|
| 5931 |
|
|
if (!add_dynamic_entry (DT_DEBUG, 0))
|
| 5932 |
|
|
return FALSE;
|
| 5933 |
|
|
}
|
| 5934 |
|
|
|
| 5935 |
|
|
if (htab->plt != NULL && htab->plt->size != 0)
|
| 5936 |
|
|
{
|
| 5937 |
|
|
if (!add_dynamic_entry (DT_PLTGOT, 0)
|
| 5938 |
|
|
|| !add_dynamic_entry (DT_PLTRELSZ, 0)
|
| 5939 |
|
|
|| !add_dynamic_entry (DT_PLTREL, DT_RELA)
|
| 5940 |
|
|
|| !add_dynamic_entry (DT_JMPREL, 0))
|
| 5941 |
|
|
return FALSE;
|
| 5942 |
|
|
}
|
| 5943 |
|
|
|
| 5944 |
|
|
if (htab->glink != NULL && htab->glink->size != 0)
|
| 5945 |
|
|
{
|
| 5946 |
|
|
if (!add_dynamic_entry (DT_PPC_GOT, 0))
|
| 5947 |
|
|
return FALSE;
|
| 5948 |
|
|
if (!htab->no_tls_get_addr_opt
|
| 5949 |
|
|
&& htab->tls_get_addr != NULL
|
| 5950 |
|
|
&& htab->tls_get_addr->plt.plist != NULL
|
| 5951 |
|
|
&& !add_dynamic_entry (DT_PPC_TLSOPT, 0))
|
| 5952 |
|
|
return FALSE;
|
| 5953 |
|
|
}
|
| 5954 |
|
|
|
| 5955 |
|
|
if (relocs)
|
| 5956 |
|
|
{
|
| 5957 |
|
|
if (!add_dynamic_entry (DT_RELA, 0)
|
| 5958 |
|
|
|| !add_dynamic_entry (DT_RELASZ, 0)
|
| 5959 |
|
|
|| !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
|
| 5960 |
|
|
return FALSE;
|
| 5961 |
|
|
}
|
| 5962 |
|
|
|
| 5963 |
|
|
/* If any dynamic relocs apply to a read-only section, then we
|
| 5964 |
|
|
need a DT_TEXTREL entry. */
|
| 5965 |
|
|
if ((info->flags & DF_TEXTREL) == 0)
|
| 5966 |
|
|
elf_link_hash_traverse (elf_hash_table (info), maybe_set_textrel,
|
| 5967 |
|
|
info);
|
| 5968 |
|
|
|
| 5969 |
|
|
if ((info->flags & DF_TEXTREL) != 0)
|
| 5970 |
|
|
{
|
| 5971 |
|
|
if (!add_dynamic_entry (DT_TEXTREL, 0))
|
| 5972 |
|
|
return FALSE;
|
| 5973 |
|
|
}
|
| 5974 |
|
|
if (htab->is_vxworks
|
| 5975 |
|
|
&& !elf_vxworks_add_dynamic_entries (output_bfd, info))
|
| 5976 |
|
|
return FALSE;
|
| 5977 |
|
|
}
|
| 5978 |
|
|
#undef add_dynamic_entry
|
| 5979 |
|
|
|
| 5980 |
|
|
return TRUE;
|
| 5981 |
|
|
}
|
| 5982 |
|
|
|
| 5983 |
|
|
/* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */
|
| 5984 |
|
|
|
| 5985 |
|
|
static bfd_boolean
|
| 5986 |
|
|
ppc_elf_hash_symbol (struct elf_link_hash_entry *h)
|
| 5987 |
|
|
{
|
| 5988 |
|
|
if (h->plt.plist != NULL
|
| 5989 |
|
|
&& !h->def_regular
|
| 5990 |
|
|
&& (!h->pointer_equality_needed
|
| 5991 |
|
|
|| !h->ref_regular_nonweak))
|
| 5992 |
|
|
return FALSE;
|
| 5993 |
|
|
|
| 5994 |
|
|
return _bfd_elf_hash_symbol (h);
|
| 5995 |
|
|
}
|
| 5996 |
|
|
|
| 5997 |
|
|
#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
|
| 5998 |
|
|
|
| 5999 |
|
|
/* Relaxation trampolines. r12 is available for clobbering (r11, is
|
| 6000 |
|
|
used for some functions that are allowed to break the ABI). */
|
| 6001 |
|
|
static const int shared_stub_entry[] =
|
| 6002 |
|
|
{
|
| 6003 |
|
|
0x7c0802a6, /* mflr 0 */
|
| 6004 |
|
|
0x429f0005, /* bcl 20, 31, .Lxxx */
|
| 6005 |
|
|
0x7d8802a6, /* mflr 12 */
|
| 6006 |
|
|
0x3d8c0000, /* addis 12, 12, (xxx-.Lxxx)@ha */
|
| 6007 |
|
|
0x398c0008, /* addi 12, 12, (xxx-.Lxxx)@l */
|
| 6008 |
|
|
0x7c0803a6, /* mtlr 0 */
|
| 6009 |
|
|
0x7d8903a6, /* mtctr 12 */
|
| 6010 |
|
|
0x4e800420, /* bctr */
|
| 6011 |
|
|
};
|
| 6012 |
|
|
|
| 6013 |
|
|
static const int stub_entry[] =
|
| 6014 |
|
|
{
|
| 6015 |
|
|
0x3d800000, /* lis 12,xxx@ha */
|
| 6016 |
|
|
0x398c0000, /* addi 12,12,xxx@l */
|
| 6017 |
|
|
0x7d8903a6, /* mtctr 12 */
|
| 6018 |
|
|
0x4e800420, /* bctr */
|
| 6019 |
|
|
};
|
| 6020 |
|
|
|
| 6021 |
|
|
static bfd_boolean
|
| 6022 |
|
|
ppc_elf_relax_section (bfd *abfd,
|
| 6023 |
|
|
asection *isec,
|
| 6024 |
|
|
struct bfd_link_info *link_info,
|
| 6025 |
|
|
bfd_boolean *again)
|
| 6026 |
|
|
{
|
| 6027 |
|
|
struct one_fixup
|
| 6028 |
|
|
{
|
| 6029 |
|
|
struct one_fixup *next;
|
| 6030 |
|
|
asection *tsec;
|
| 6031 |
|
|
/* Final link, can use the symbol offset. For a
|
| 6032 |
|
|
relocatable link we use the symbol's index. */
|
| 6033 |
|
|
bfd_vma toff;
|
| 6034 |
|
|
bfd_vma trampoff;
|
| 6035 |
|
|
};
|
| 6036 |
|
|
|
| 6037 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 6038 |
|
|
bfd_byte *contents = NULL;
|
| 6039 |
|
|
Elf_Internal_Sym *isymbuf = NULL;
|
| 6040 |
|
|
Elf_Internal_Rela *internal_relocs = NULL;
|
| 6041 |
|
|
Elf_Internal_Rela *irel, *irelend;
|
| 6042 |
|
|
struct one_fixup *fixups = NULL;
|
| 6043 |
|
|
unsigned changes = 0;
|
| 6044 |
|
|
struct ppc_elf_link_hash_table *htab;
|
| 6045 |
|
|
bfd_size_type trampoff;
|
| 6046 |
|
|
asection *got2;
|
| 6047 |
|
|
bfd_boolean maybe_pasted;
|
| 6048 |
|
|
|
| 6049 |
|
|
*again = FALSE;
|
| 6050 |
|
|
|
| 6051 |
|
|
/* Nothing to do if there are no relocations, and no need to do
|
| 6052 |
|
|
anything with non-alloc or non-code sections. */
|
| 6053 |
|
|
if ((isec->flags & SEC_ALLOC) == 0
|
| 6054 |
|
|
|| (isec->flags & SEC_CODE) == 0
|
| 6055 |
|
|
|| (isec->flags & SEC_RELOC) == 0
|
| 6056 |
|
|
|| isec->reloc_count == 0)
|
| 6057 |
|
|
return TRUE;
|
| 6058 |
|
|
|
| 6059 |
|
|
/* We cannot represent the required PIC relocs in the output, so don't
|
| 6060 |
|
|
do anything. The linker doesn't support mixing -shared and -r
|
| 6061 |
|
|
anyway. */
|
| 6062 |
|
|
if (link_info->relocatable && link_info->shared)
|
| 6063 |
|
|
return TRUE;
|
| 6064 |
|
|
|
| 6065 |
|
|
trampoff = (isec->size + 3) & (bfd_vma) -4;
|
| 6066 |
|
|
maybe_pasted = (strcmp (isec->output_section->name, ".init") == 0
|
| 6067 |
|
|
|| strcmp (isec->output_section->name, ".fini") == 0);
|
| 6068 |
|
|
/* Space for a branch around any trampolines. */
|
| 6069 |
|
|
if (maybe_pasted)
|
| 6070 |
|
|
trampoff += 4;
|
| 6071 |
|
|
|
| 6072 |
|
|
symtab_hdr = &elf_symtab_hdr (abfd);
|
| 6073 |
|
|
|
| 6074 |
|
|
/* Get a copy of the native relocations. */
|
| 6075 |
|
|
internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
|
| 6076 |
|
|
link_info->keep_memory);
|
| 6077 |
|
|
if (internal_relocs == NULL)
|
| 6078 |
|
|
goto error_return;
|
| 6079 |
|
|
|
| 6080 |
|
|
htab = ppc_elf_hash_table (link_info);
|
| 6081 |
|
|
got2 = bfd_get_section_by_name (abfd, ".got2");
|
| 6082 |
|
|
|
| 6083 |
|
|
irelend = internal_relocs + isec->reloc_count;
|
| 6084 |
|
|
for (irel = internal_relocs; irel < irelend; irel++)
|
| 6085 |
|
|
{
|
| 6086 |
|
|
unsigned long r_type = ELF32_R_TYPE (irel->r_info);
|
| 6087 |
|
|
bfd_vma toff, roff;
|
| 6088 |
|
|
asection *tsec;
|
| 6089 |
|
|
struct one_fixup *f;
|
| 6090 |
|
|
size_t insn_offset = 0;
|
| 6091 |
|
|
bfd_vma max_branch_offset, val;
|
| 6092 |
|
|
bfd_byte *hit_addr;
|
| 6093 |
|
|
unsigned long t0;
|
| 6094 |
|
|
struct elf_link_hash_entry *h;
|
| 6095 |
|
|
struct plt_entry **plist;
|
| 6096 |
|
|
unsigned char sym_type;
|
| 6097 |
|
|
|
| 6098 |
|
|
switch (r_type)
|
| 6099 |
|
|
{
|
| 6100 |
|
|
case R_PPC_REL24:
|
| 6101 |
|
|
case R_PPC_LOCAL24PC:
|
| 6102 |
|
|
case R_PPC_PLTREL24:
|
| 6103 |
|
|
max_branch_offset = 1 << 25;
|
| 6104 |
|
|
break;
|
| 6105 |
|
|
|
| 6106 |
|
|
case R_PPC_REL14:
|
| 6107 |
|
|
case R_PPC_REL14_BRTAKEN:
|
| 6108 |
|
|
case R_PPC_REL14_BRNTAKEN:
|
| 6109 |
|
|
max_branch_offset = 1 << 15;
|
| 6110 |
|
|
break;
|
| 6111 |
|
|
|
| 6112 |
|
|
default:
|
| 6113 |
|
|
continue;
|
| 6114 |
|
|
}
|
| 6115 |
|
|
|
| 6116 |
|
|
/* Get the value of the symbol referred to by the reloc. */
|
| 6117 |
|
|
h = NULL;
|
| 6118 |
|
|
if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
|
| 6119 |
|
|
{
|
| 6120 |
|
|
/* A local symbol. */
|
| 6121 |
|
|
Elf_Internal_Sym *isym;
|
| 6122 |
|
|
|
| 6123 |
|
|
/* Read this BFD's local symbols. */
|
| 6124 |
|
|
if (isymbuf == NULL)
|
| 6125 |
|
|
{
|
| 6126 |
|
|
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
|
| 6127 |
|
|
if (isymbuf == NULL)
|
| 6128 |
|
|
isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
|
| 6129 |
|
|
symtab_hdr->sh_info, 0,
|
| 6130 |
|
|
NULL, NULL, NULL);
|
| 6131 |
|
|
if (isymbuf == 0)
|
| 6132 |
|
|
goto error_return;
|
| 6133 |
|
|
}
|
| 6134 |
|
|
isym = isymbuf + ELF32_R_SYM (irel->r_info);
|
| 6135 |
|
|
if (isym->st_shndx == SHN_UNDEF)
|
| 6136 |
|
|
tsec = bfd_und_section_ptr;
|
| 6137 |
|
|
else if (isym->st_shndx == SHN_ABS)
|
| 6138 |
|
|
tsec = bfd_abs_section_ptr;
|
| 6139 |
|
|
else if (isym->st_shndx == SHN_COMMON)
|
| 6140 |
|
|
tsec = bfd_com_section_ptr;
|
| 6141 |
|
|
else
|
| 6142 |
|
|
tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
|
| 6143 |
|
|
|
| 6144 |
|
|
toff = isym->st_value;
|
| 6145 |
|
|
sym_type = ELF_ST_TYPE (isym->st_info);
|
| 6146 |
|
|
}
|
| 6147 |
|
|
else
|
| 6148 |
|
|
{
|
| 6149 |
|
|
/* Global symbol handling. */
|
| 6150 |
|
|
unsigned long indx;
|
| 6151 |
|
|
|
| 6152 |
|
|
indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
|
| 6153 |
|
|
h = elf_sym_hashes (abfd)[indx];
|
| 6154 |
|
|
|
| 6155 |
|
|
while (h->root.type == bfd_link_hash_indirect
|
| 6156 |
|
|
|| h->root.type == bfd_link_hash_warning)
|
| 6157 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
| 6158 |
|
|
|
| 6159 |
|
|
if (h->root.type == bfd_link_hash_defined
|
| 6160 |
|
|
|| h->root.type == bfd_link_hash_defweak)
|
| 6161 |
|
|
{
|
| 6162 |
|
|
tsec = h->root.u.def.section;
|
| 6163 |
|
|
toff = h->root.u.def.value;
|
| 6164 |
|
|
}
|
| 6165 |
|
|
else if (h->root.type == bfd_link_hash_undefined
|
| 6166 |
|
|
|| h->root.type == bfd_link_hash_undefweak)
|
| 6167 |
|
|
{
|
| 6168 |
|
|
tsec = bfd_und_section_ptr;
|
| 6169 |
|
|
toff = link_info->relocatable ? indx : 0;
|
| 6170 |
|
|
}
|
| 6171 |
|
|
else
|
| 6172 |
|
|
continue;
|
| 6173 |
|
|
|
| 6174 |
|
|
sym_type = h->type;
|
| 6175 |
|
|
}
|
| 6176 |
|
|
|
| 6177 |
|
|
/* The condition here under which we call find_plt_ent must
|
| 6178 |
|
|
match that in relocate_section. If we call find_plt_ent here
|
| 6179 |
|
|
but not in relocate_section, or vice versa, then the branch
|
| 6180 |
|
|
destination used here may be incorrect. */
|
| 6181 |
|
|
plist = NULL;
|
| 6182 |
|
|
if (h != NULL)
|
| 6183 |
|
|
{
|
| 6184 |
|
|
/* We know is_branch_reloc (r_type) is true. */
|
| 6185 |
|
|
if (h->type == STT_GNU_IFUNC
|
| 6186 |
|
|
|| r_type == R_PPC_PLTREL24)
|
| 6187 |
|
|
plist = &h->plt.plist;
|
| 6188 |
|
|
}
|
| 6189 |
|
|
else if (sym_type == STT_GNU_IFUNC
|
| 6190 |
|
|
&& elf_local_got_offsets (abfd) != NULL)
|
| 6191 |
|
|
{
|
| 6192 |
|
|
bfd_vma *local_got_offsets = elf_local_got_offsets (abfd);
|
| 6193 |
|
|
struct plt_entry **local_plt = (struct plt_entry **)
|
| 6194 |
|
|
(local_got_offsets + symtab_hdr->sh_info);
|
| 6195 |
|
|
plist = local_plt + ELF32_R_SYM (irel->r_info);
|
| 6196 |
|
|
}
|
| 6197 |
|
|
if (plist != NULL)
|
| 6198 |
|
|
{
|
| 6199 |
|
|
bfd_vma addend = 0;
|
| 6200 |
|
|
struct plt_entry *ent;
|
| 6201 |
|
|
|
| 6202 |
|
|
if (r_type == R_PPC_PLTREL24 && link_info->shared)
|
| 6203 |
|
|
addend = irel->r_addend;
|
| 6204 |
|
|
ent = find_plt_ent (plist, got2, addend);
|
| 6205 |
|
|
if (ent != NULL)
|
| 6206 |
|
|
{
|
| 6207 |
|
|
if (htab->plt_type == PLT_NEW
|
| 6208 |
|
|
|| h == NULL
|
| 6209 |
|
|
|| !htab->elf.dynamic_sections_created
|
| 6210 |
|
|
|| h->dynindx == -1)
|
| 6211 |
|
|
{
|
| 6212 |
|
|
tsec = htab->glink;
|
| 6213 |
|
|
toff = ent->glink_offset;
|
| 6214 |
|
|
}
|
| 6215 |
|
|
else
|
| 6216 |
|
|
{
|
| 6217 |
|
|
tsec = htab->plt;
|
| 6218 |
|
|
toff = ent->plt.offset;
|
| 6219 |
|
|
}
|
| 6220 |
|
|
}
|
| 6221 |
|
|
}
|
| 6222 |
|
|
|
| 6223 |
|
|
/* If the branch and target are in the same section, you have
|
| 6224 |
|
|
no hope of adding stubs. We'll error out later should the
|
| 6225 |
|
|
branch overflow. */
|
| 6226 |
|
|
if (tsec == isec)
|
| 6227 |
|
|
continue;
|
| 6228 |
|
|
|
| 6229 |
|
|
/* There probably isn't any reason to handle symbols in
|
| 6230 |
|
|
SEC_MERGE sections; SEC_MERGE doesn't seem a likely
|
| 6231 |
|
|
attribute for a code section, and we are only looking at
|
| 6232 |
|
|
branches. However, implement it correctly here as a
|
| 6233 |
|
|
reference for other target relax_section functions. */
|
| 6234 |
|
|
if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
|
| 6235 |
|
|
{
|
| 6236 |
|
|
/* At this stage in linking, no SEC_MERGE symbol has been
|
| 6237 |
|
|
adjusted, so all references to such symbols need to be
|
| 6238 |
|
|
passed through _bfd_merged_section_offset. (Later, in
|
| 6239 |
|
|
relocate_section, all SEC_MERGE symbols *except* for
|
| 6240 |
|
|
section symbols have been adjusted.)
|
| 6241 |
|
|
|
| 6242 |
|
|
gas may reduce relocations against symbols in SEC_MERGE
|
| 6243 |
|
|
sections to a relocation against the section symbol when
|
| 6244 |
|
|
the original addend was zero. When the reloc is against
|
| 6245 |
|
|
a section symbol we should include the addend in the
|
| 6246 |
|
|
offset passed to _bfd_merged_section_offset, since the
|
| 6247 |
|
|
location of interest is the original symbol. On the
|
| 6248 |
|
|
other hand, an access to "sym+addend" where "sym" is not
|
| 6249 |
|
|
a section symbol should not include the addend; Such an
|
| 6250 |
|
|
access is presumed to be an offset from "sym"; The
|
| 6251 |
|
|
location of interest is just "sym". */
|
| 6252 |
|
|
if (sym_type == STT_SECTION)
|
| 6253 |
|
|
toff += irel->r_addend;
|
| 6254 |
|
|
|
| 6255 |
|
|
toff = _bfd_merged_section_offset (abfd, &tsec,
|
| 6256 |
|
|
elf_section_data (tsec)->sec_info,
|
| 6257 |
|
|
toff);
|
| 6258 |
|
|
|
| 6259 |
|
|
if (sym_type != STT_SECTION)
|
| 6260 |
|
|
toff += irel->r_addend;
|
| 6261 |
|
|
}
|
| 6262 |
|
|
/* PLTREL24 addends are special. */
|
| 6263 |
|
|
else if (r_type != R_PPC_PLTREL24)
|
| 6264 |
|
|
toff += irel->r_addend;
|
| 6265 |
|
|
|
| 6266 |
|
|
/* Attempted -shared link of non-pic code loses. */
|
| 6267 |
|
|
if (tsec->output_section == NULL)
|
| 6268 |
|
|
continue;
|
| 6269 |
|
|
|
| 6270 |
|
|
roff = irel->r_offset;
|
| 6271 |
|
|
|
| 6272 |
|
|
/* If the branch is in range, no need to do anything. */
|
| 6273 |
|
|
if (tsec != bfd_und_section_ptr
|
| 6274 |
|
|
&& (!link_info->relocatable
|
| 6275 |
|
|
/* A relocatable link may have sections moved during
|
| 6276 |
|
|
final link, so do not presume they remain in range. */
|
| 6277 |
|
|
|| tsec->output_section == isec->output_section))
|
| 6278 |
|
|
{
|
| 6279 |
|
|
bfd_vma symaddr, reladdr;
|
| 6280 |
|
|
|
| 6281 |
|
|
symaddr = tsec->output_section->vma + tsec->output_offset + toff;
|
| 6282 |
|
|
reladdr = isec->output_section->vma + isec->output_offset + roff;
|
| 6283 |
|
|
if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
|
| 6284 |
|
|
continue;
|
| 6285 |
|
|
}
|
| 6286 |
|
|
|
| 6287 |
|
|
/* Look for an existing fixup to this address. */
|
| 6288 |
|
|
for (f = fixups; f ; f = f->next)
|
| 6289 |
|
|
if (f->tsec == tsec && f->toff == toff)
|
| 6290 |
|
|
break;
|
| 6291 |
|
|
|
| 6292 |
|
|
if (f == NULL)
|
| 6293 |
|
|
{
|
| 6294 |
|
|
size_t size;
|
| 6295 |
|
|
unsigned long stub_rtype;
|
| 6296 |
|
|
|
| 6297 |
|
|
val = trampoff - roff;
|
| 6298 |
|
|
if (val >= max_branch_offset)
|
| 6299 |
|
|
/* Oh dear, we can't reach a trampoline. Don't try to add
|
| 6300 |
|
|
one. We'll report an error later. */
|
| 6301 |
|
|
continue;
|
| 6302 |
|
|
|
| 6303 |
|
|
if (link_info->shared)
|
| 6304 |
|
|
{
|
| 6305 |
|
|
size = 4 * ARRAY_SIZE (shared_stub_entry);
|
| 6306 |
|
|
insn_offset = 12;
|
| 6307 |
|
|
}
|
| 6308 |
|
|
else
|
| 6309 |
|
|
{
|
| 6310 |
|
|
size = 4 * ARRAY_SIZE (stub_entry);
|
| 6311 |
|
|
insn_offset = 0;
|
| 6312 |
|
|
}
|
| 6313 |
|
|
stub_rtype = R_PPC_RELAX;
|
| 6314 |
|
|
if (tsec == htab->plt
|
| 6315 |
|
|
|| tsec == htab->glink)
|
| 6316 |
|
|
{
|
| 6317 |
|
|
stub_rtype = R_PPC_RELAX_PLT;
|
| 6318 |
|
|
if (r_type == R_PPC_PLTREL24)
|
| 6319 |
|
|
stub_rtype = R_PPC_RELAX_PLTREL24;
|
| 6320 |
|
|
}
|
| 6321 |
|
|
|
| 6322 |
|
|
/* Hijack the old relocation. Since we need two
|
| 6323 |
|
|
relocations for this use a "composite" reloc. */
|
| 6324 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
| 6325 |
|
|
stub_rtype);
|
| 6326 |
|
|
irel->r_offset = trampoff + insn_offset;
|
| 6327 |
|
|
if (r_type == R_PPC_PLTREL24
|
| 6328 |
|
|
&& stub_rtype != R_PPC_RELAX_PLTREL24)
|
| 6329 |
|
|
irel->r_addend = 0;
|
| 6330 |
|
|
|
| 6331 |
|
|
/* Record the fixup so we don't do it again this section. */
|
| 6332 |
|
|
f = bfd_malloc (sizeof (*f));
|
| 6333 |
|
|
f->next = fixups;
|
| 6334 |
|
|
f->tsec = tsec;
|
| 6335 |
|
|
f->toff = toff;
|
| 6336 |
|
|
f->trampoff = trampoff;
|
| 6337 |
|
|
fixups = f;
|
| 6338 |
|
|
|
| 6339 |
|
|
trampoff += size;
|
| 6340 |
|
|
changes++;
|
| 6341 |
|
|
}
|
| 6342 |
|
|
else
|
| 6343 |
|
|
{
|
| 6344 |
|
|
val = f->trampoff - roff;
|
| 6345 |
|
|
if (val >= max_branch_offset)
|
| 6346 |
|
|
continue;
|
| 6347 |
|
|
|
| 6348 |
|
|
/* Nop out the reloc, since we're finalizing things here. */
|
| 6349 |
|
|
irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
|
| 6350 |
|
|
}
|
| 6351 |
|
|
|
| 6352 |
|
|
/* Get the section contents. */
|
| 6353 |
|
|
if (contents == NULL)
|
| 6354 |
|
|
{
|
| 6355 |
|
|
/* Get cached copy if it exists. */
|
| 6356 |
|
|
if (elf_section_data (isec)->this_hdr.contents != NULL)
|
| 6357 |
|
|
contents = elf_section_data (isec)->this_hdr.contents;
|
| 6358 |
|
|
else
|
| 6359 |
|
|
{
|
| 6360 |
|
|
/* Go get them off disk. */
|
| 6361 |
|
|
if (!bfd_malloc_and_get_section (abfd, isec, &contents))
|
| 6362 |
|
|
goto error_return;
|
| 6363 |
|
|
}
|
| 6364 |
|
|
}
|
| 6365 |
|
|
|
| 6366 |
|
|
/* Fix up the existing branch to hit the trampoline. */
|
| 6367 |
|
|
hit_addr = contents + roff;
|
| 6368 |
|
|
switch (r_type)
|
| 6369 |
|
|
{
|
| 6370 |
|
|
case R_PPC_REL24:
|
| 6371 |
|
|
case R_PPC_LOCAL24PC:
|
| 6372 |
|
|
case R_PPC_PLTREL24:
|
| 6373 |
|
|
t0 = bfd_get_32 (abfd, hit_addr);
|
| 6374 |
|
|
t0 &= ~0x3fffffc;
|
| 6375 |
|
|
t0 |= val & 0x3fffffc;
|
| 6376 |
|
|
bfd_put_32 (abfd, t0, hit_addr);
|
| 6377 |
|
|
break;
|
| 6378 |
|
|
|
| 6379 |
|
|
case R_PPC_REL14:
|
| 6380 |
|
|
case R_PPC_REL14_BRTAKEN:
|
| 6381 |
|
|
case R_PPC_REL14_BRNTAKEN:
|
| 6382 |
|
|
t0 = bfd_get_32 (abfd, hit_addr);
|
| 6383 |
|
|
t0 &= ~0xfffc;
|
| 6384 |
|
|
t0 |= val & 0xfffc;
|
| 6385 |
|
|
bfd_put_32 (abfd, t0, hit_addr);
|
| 6386 |
|
|
break;
|
| 6387 |
|
|
}
|
| 6388 |
|
|
}
|
| 6389 |
|
|
|
| 6390 |
|
|
/* Write out the trampolines. */
|
| 6391 |
|
|
if (fixups != NULL)
|
| 6392 |
|
|
{
|
| 6393 |
|
|
const int *stub;
|
| 6394 |
|
|
bfd_byte *dest;
|
| 6395 |
|
|
int i, size;
|
| 6396 |
|
|
|
| 6397 |
|
|
do
|
| 6398 |
|
|
{
|
| 6399 |
|
|
struct one_fixup *f = fixups;
|
| 6400 |
|
|
fixups = fixups->next;
|
| 6401 |
|
|
free (f);
|
| 6402 |
|
|
}
|
| 6403 |
|
|
while (fixups);
|
| 6404 |
|
|
|
| 6405 |
|
|
contents = bfd_realloc_or_free (contents, trampoff);
|
| 6406 |
|
|
if (contents == NULL)
|
| 6407 |
|
|
goto error_return;
|
| 6408 |
|
|
|
| 6409 |
|
|
isec->size = (isec->size + 3) & (bfd_vma) -4;
|
| 6410 |
|
|
dest = contents + isec->size;
|
| 6411 |
|
|
/* Branch around the trampolines. */
|
| 6412 |
|
|
if (maybe_pasted)
|
| 6413 |
|
|
{
|
| 6414 |
|
|
bfd_vma val = B + trampoff - isec->size;
|
| 6415 |
|
|
bfd_put_32 (abfd, val, dest);
|
| 6416 |
|
|
dest += 4;
|
| 6417 |
|
|
}
|
| 6418 |
|
|
isec->size = trampoff;
|
| 6419 |
|
|
|
| 6420 |
|
|
if (link_info->shared)
|
| 6421 |
|
|
{
|
| 6422 |
|
|
stub = shared_stub_entry;
|
| 6423 |
|
|
size = ARRAY_SIZE (shared_stub_entry);
|
| 6424 |
|
|
}
|
| 6425 |
|
|
else
|
| 6426 |
|
|
{
|
| 6427 |
|
|
stub = stub_entry;
|
| 6428 |
|
|
size = ARRAY_SIZE (stub_entry);
|
| 6429 |
|
|
}
|
| 6430 |
|
|
|
| 6431 |
|
|
i = 0;
|
| 6432 |
|
|
while (dest < contents + trampoff)
|
| 6433 |
|
|
{
|
| 6434 |
|
|
bfd_put_32 (abfd, stub[i], dest);
|
| 6435 |
|
|
i++;
|
| 6436 |
|
|
if (i == size)
|
| 6437 |
|
|
i = 0;
|
| 6438 |
|
|
dest += 4;
|
| 6439 |
|
|
}
|
| 6440 |
|
|
BFD_ASSERT (i == 0);
|
| 6441 |
|
|
}
|
| 6442 |
|
|
|
| 6443 |
|
|
if (isymbuf != NULL
|
| 6444 |
|
|
&& symtab_hdr->contents != (unsigned char *) isymbuf)
|
| 6445 |
|
|
{
|
| 6446 |
|
|
if (! link_info->keep_memory)
|
| 6447 |
|
|
free (isymbuf);
|
| 6448 |
|
|
else
|
| 6449 |
|
|
{
|
| 6450 |
|
|
/* Cache the symbols for elf_link_input_bfd. */
|
| 6451 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
| 6452 |
|
|
}
|
| 6453 |
|
|
}
|
| 6454 |
|
|
|
| 6455 |
|
|
if (contents != NULL
|
| 6456 |
|
|
&& elf_section_data (isec)->this_hdr.contents != contents)
|
| 6457 |
|
|
{
|
| 6458 |
|
|
if (!changes && !link_info->keep_memory)
|
| 6459 |
|
|
free (contents);
|
| 6460 |
|
|
else
|
| 6461 |
|
|
{
|
| 6462 |
|
|
/* Cache the section contents for elf_link_input_bfd. */
|
| 6463 |
|
|
elf_section_data (isec)->this_hdr.contents = contents;
|
| 6464 |
|
|
}
|
| 6465 |
|
|
}
|
| 6466 |
|
|
|
| 6467 |
|
|
if (changes != 0)
|
| 6468 |
|
|
{
|
| 6469 |
|
|
/* Append sufficient NOP relocs so we can write out relocation
|
| 6470 |
|
|
information for the trampolines. */
|
| 6471 |
|
|
Elf_Internal_Shdr *rel_hdr;
|
| 6472 |
|
|
Elf_Internal_Rela *new_relocs = bfd_malloc ((changes + isec->reloc_count)
|
| 6473 |
|
|
* sizeof (*new_relocs));
|
| 6474 |
|
|
unsigned ix;
|
| 6475 |
|
|
|
| 6476 |
|
|
if (!new_relocs)
|
| 6477 |
|
|
goto error_return;
|
| 6478 |
|
|
memcpy (new_relocs, internal_relocs,
|
| 6479 |
|
|
isec->reloc_count * sizeof (*new_relocs));
|
| 6480 |
|
|
for (ix = changes; ix--;)
|
| 6481 |
|
|
{
|
| 6482 |
|
|
irel = new_relocs + ix + isec->reloc_count;
|
| 6483 |
|
|
|
| 6484 |
|
|
irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
|
| 6485 |
|
|
}
|
| 6486 |
|
|
if (internal_relocs != elf_section_data (isec)->relocs)
|
| 6487 |
|
|
free (internal_relocs);
|
| 6488 |
|
|
elf_section_data (isec)->relocs = new_relocs;
|
| 6489 |
|
|
isec->reloc_count += changes;
|
| 6490 |
|
|
rel_hdr = _bfd_elf_single_rel_hdr (isec);
|
| 6491 |
|
|
rel_hdr->sh_size += changes * rel_hdr->sh_entsize;
|
| 6492 |
|
|
}
|
| 6493 |
|
|
else if (elf_section_data (isec)->relocs != internal_relocs)
|
| 6494 |
|
|
free (internal_relocs);
|
| 6495 |
|
|
|
| 6496 |
|
|
*again = changes != 0;
|
| 6497 |
|
|
if (!*again && link_info->relocatable)
|
| 6498 |
|
|
{
|
| 6499 |
|
|
/* Convert the internal relax relocs to external form. */
|
| 6500 |
|
|
for (irel = internal_relocs; irel < irelend; irel++)
|
| 6501 |
|
|
if (ELF32_R_TYPE (irel->r_info) == R_PPC_RELAX)
|
| 6502 |
|
|
{
|
| 6503 |
|
|
unsigned long r_symndx = ELF32_R_SYM (irel->r_info);
|
| 6504 |
|
|
|
| 6505 |
|
|
/* Rewrite the reloc and convert one of the trailing nop
|
| 6506 |
|
|
relocs to describe this relocation. */
|
| 6507 |
|
|
BFD_ASSERT (ELF32_R_TYPE (irelend[-1].r_info) == R_PPC_NONE);
|
| 6508 |
|
|
/* The relocs are at the bottom 2 bytes */
|
| 6509 |
|
|
irel[0].r_offset += 2;
|
| 6510 |
|
|
memmove (irel + 1, irel, (irelend - irel - 1) * sizeof (*irel));
|
| 6511 |
|
|
irel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
|
| 6512 |
|
|
irel[1].r_offset += 4;
|
| 6513 |
|
|
irel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
|
| 6514 |
|
|
irel++;
|
| 6515 |
|
|
}
|
| 6516 |
|
|
}
|
| 6517 |
|
|
|
| 6518 |
|
|
return TRUE;
|
| 6519 |
|
|
|
| 6520 |
|
|
error_return:
|
| 6521 |
|
|
if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
|
| 6522 |
|
|
free (isymbuf);
|
| 6523 |
|
|
if (contents != NULL
|
| 6524 |
|
|
&& elf_section_data (isec)->this_hdr.contents != contents)
|
| 6525 |
|
|
free (contents);
|
| 6526 |
|
|
if (internal_relocs != NULL
|
| 6527 |
|
|
&& elf_section_data (isec)->relocs != internal_relocs)
|
| 6528 |
|
|
free (internal_relocs);
|
| 6529 |
|
|
return FALSE;
|
| 6530 |
|
|
}
|
| 6531 |
|
|
|
| 6532 |
|
|
/* What to do when ld finds relocations against symbols defined in
|
| 6533 |
|
|
discarded sections. */
|
| 6534 |
|
|
|
| 6535 |
|
|
static unsigned int
|
| 6536 |
|
|
ppc_elf_action_discarded (asection *sec)
|
| 6537 |
|
|
{
|
| 6538 |
|
|
if (strcmp (".fixup", sec->name) == 0)
|
| 6539 |
|
|
return 0;
|
| 6540 |
|
|
|
| 6541 |
|
|
if (strcmp (".got2", sec->name) == 0)
|
| 6542 |
|
|
return 0;
|
| 6543 |
|
|
|
| 6544 |
|
|
return _bfd_elf_default_action_discarded (sec);
|
| 6545 |
|
|
}
|
| 6546 |
|
|
|
| 6547 |
|
|
/* Fill in the address for a pointer generated in a linker section. */
|
| 6548 |
|
|
|
| 6549 |
|
|
static bfd_vma
|
| 6550 |
|
|
elf_finish_pointer_linker_section (bfd *input_bfd,
|
| 6551 |
|
|
elf_linker_section_t *lsect,
|
| 6552 |
|
|
struct elf_link_hash_entry *h,
|
| 6553 |
|
|
bfd_vma relocation,
|
| 6554 |
|
|
const Elf_Internal_Rela *rel)
|
| 6555 |
|
|
{
|
| 6556 |
|
|
elf_linker_section_pointers_t *linker_section_ptr;
|
| 6557 |
|
|
|
| 6558 |
|
|
BFD_ASSERT (lsect != NULL);
|
| 6559 |
|
|
|
| 6560 |
|
|
if (h != NULL)
|
| 6561 |
|
|
{
|
| 6562 |
|
|
/* Handle global symbol. */
|
| 6563 |
|
|
struct ppc_elf_link_hash_entry *eh;
|
| 6564 |
|
|
|
| 6565 |
|
|
eh = (struct ppc_elf_link_hash_entry *) h;
|
| 6566 |
|
|
BFD_ASSERT (eh->elf.def_regular);
|
| 6567 |
|
|
linker_section_ptr = eh->linker_section_pointer;
|
| 6568 |
|
|
}
|
| 6569 |
|
|
else
|
| 6570 |
|
|
{
|
| 6571 |
|
|
/* Handle local symbol. */
|
| 6572 |
|
|
unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
|
| 6573 |
|
|
|
| 6574 |
|
|
BFD_ASSERT (is_ppc_elf (input_bfd));
|
| 6575 |
|
|
BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
|
| 6576 |
|
|
linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
|
| 6577 |
|
|
}
|
| 6578 |
|
|
|
| 6579 |
|
|
linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
|
| 6580 |
|
|
rel->r_addend,
|
| 6581 |
|
|
lsect);
|
| 6582 |
|
|
BFD_ASSERT (linker_section_ptr != NULL);
|
| 6583 |
|
|
|
| 6584 |
|
|
/* Offset will always be a multiple of four, so use the bottom bit
|
| 6585 |
|
|
as a "written" flag. */
|
| 6586 |
|
|
if ((linker_section_ptr->offset & 1) == 0)
|
| 6587 |
|
|
{
|
| 6588 |
|
|
bfd_put_32 (lsect->section->owner,
|
| 6589 |
|
|
relocation + linker_section_ptr->addend,
|
| 6590 |
|
|
lsect->section->contents + linker_section_ptr->offset);
|
| 6591 |
|
|
linker_section_ptr->offset += 1;
|
| 6592 |
|
|
}
|
| 6593 |
|
|
|
| 6594 |
|
|
relocation = (lsect->section->output_section->vma
|
| 6595 |
|
|
+ lsect->section->output_offset
|
| 6596 |
|
|
+ linker_section_ptr->offset - 1
|
| 6597 |
|
|
- SYM_VAL (lsect->sym));
|
| 6598 |
|
|
|
| 6599 |
|
|
#ifdef DEBUG
|
| 6600 |
|
|
fprintf (stderr,
|
| 6601 |
|
|
"Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
|
| 6602 |
|
|
lsect->name, (long) relocation, (long) relocation);
|
| 6603 |
|
|
#endif
|
| 6604 |
|
|
|
| 6605 |
|
|
return relocation;
|
| 6606 |
|
|
}
|
| 6607 |
|
|
|
| 6608 |
|
|
#define PPC_LO(v) ((v) & 0xffff)
|
| 6609 |
|
|
#define PPC_HI(v) (((v) >> 16) & 0xffff)
|
| 6610 |
|
|
#define PPC_HA(v) PPC_HI ((v) + 0x8000)
|
| 6611 |
|
|
|
| 6612 |
|
|
static void
|
| 6613 |
|
|
write_glink_stub (struct plt_entry *ent, asection *plt_sec, unsigned char *p,
|
| 6614 |
|
|
struct bfd_link_info *info)
|
| 6615 |
|
|
{
|
| 6616 |
|
|
struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
|
| 6617 |
|
|
bfd *output_bfd = info->output_bfd;
|
| 6618 |
|
|
bfd_vma plt;
|
| 6619 |
|
|
|
| 6620 |
|
|
plt = ((ent->plt.offset & ~1)
|
| 6621 |
|
|
+ plt_sec->output_section->vma
|
| 6622 |
|
|
+ plt_sec->output_offset);
|
| 6623 |
|
|
|
| 6624 |
|
|
if (info->shared)
|
| 6625 |
|
|
{
|
| 6626 |
|
|
bfd_vma got = 0;
|
| 6627 |
|
|
|
| 6628 |
|
|
if (ent->addend >= 32768)
|
| 6629 |
|
|
got = (ent->addend
|
| 6630 |
|
|
+ ent->sec->output_section->vma
|
| 6631 |
|
|
+ ent->sec->output_offset);
|
| 6632 |
|
|
else if (htab->elf.hgot != NULL)
|
| 6633 |
|
|
got = SYM_VAL (htab->elf.hgot);
|
| 6634 |
|
|
|
| 6635 |
|
|
plt -= got;
|
| 6636 |
|
|
|
| 6637 |
|
|
if (plt + 0x8000 < 0x10000)
|
| 6638 |
|
|
{
|
| 6639 |
|
|
bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
|
| 6640 |
|
|
p += 4;
|
| 6641 |
|
|
bfd_put_32 (output_bfd, MTCTR_11, p);
|
| 6642 |
|
|
p += 4;
|
| 6643 |
|
|
bfd_put_32 (output_bfd, BCTR, p);
|
| 6644 |
|
|
p += 4;
|
| 6645 |
|
|
bfd_put_32 (output_bfd, NOP, p);
|
| 6646 |
|
|
p += 4;
|
| 6647 |
|
|
}
|
| 6648 |
|
|
else
|
| 6649 |
|
|
{
|
| 6650 |
|
|
bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
|
| 6651 |
|
|
p += 4;
|
| 6652 |
|
|
bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
|
| 6653 |
|
|
p += 4;
|
| 6654 |
|
|
bfd_put_32 (output_bfd, MTCTR_11, p);
|
| 6655 |
|
|
p += 4;
|
| 6656 |
|
|
bfd_put_32 (output_bfd, BCTR, p);
|
| 6657 |
|
|
p += 4;
|
| 6658 |
|
|
}
|
| 6659 |
|
|
}
|
| 6660 |
|
|
else
|
| 6661 |
|
|
{
|
| 6662 |
|
|
bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
|
| 6663 |
|
|
p += 4;
|
| 6664 |
|
|
bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
|
| 6665 |
|
|
p += 4;
|
| 6666 |
|
|
bfd_put_32 (output_bfd, MTCTR_11, p);
|
| 6667 |
|
|
p += 4;
|
| 6668 |
|
|
bfd_put_32 (output_bfd, BCTR, p);
|
| 6669 |
|
|
p += 4;
|
| 6670 |
|
|
}
|
| 6671 |
|
|
}
|
| 6672 |
|
|
|
| 6673 |
|
|
/* Return true if symbol is defined statically. */
|
| 6674 |
|
|
|
| 6675 |
|
|
static bfd_boolean
|
| 6676 |
|
|
is_static_defined (struct elf_link_hash_entry *h)
|
| 6677 |
|
|
{
|
| 6678 |
|
|
return ((h->root.type == bfd_link_hash_defined
|
| 6679 |
|
|
|| h->root.type == bfd_link_hash_defweak)
|
| 6680 |
|
|
&& h->root.u.def.section != NULL
|
| 6681 |
|
|
&& h->root.u.def.section->output_section != NULL);
|
| 6682 |
|
|
}
|
| 6683 |
|
|
|
| 6684 |
|
|
/* If INSN is an opcode that may be used with an @tls operand, return
|
| 6685 |
|
|
the transformed insn for TLS optimisation, otherwise return 0. If
|
| 6686 |
|
|
REG is non-zero only match an insn with RB or RA equal to REG. */
|
| 6687 |
|
|
|
| 6688 |
|
|
unsigned int
|
| 6689 |
|
|
_bfd_elf_ppc_at_tls_transform (unsigned int insn, unsigned int reg)
|
| 6690 |
|
|
{
|
| 6691 |
|
|
unsigned int rtra;
|
| 6692 |
|
|
|
| 6693 |
|
|
if ((insn & (0x3f << 26)) != 31 << 26)
|
| 6694 |
|
|
return 0;
|
| 6695 |
|
|
|
| 6696 |
|
|
if (reg == 0 || ((insn >> 11) & 0x1f) == reg)
|
| 6697 |
|
|
rtra = insn & ((1 << 26) - (1 << 16));
|
| 6698 |
|
|
else if (((insn >> 16) & 0x1f) == reg)
|
| 6699 |
|
|
rtra = (insn & (0x1f << 21)) | ((insn & (0x1f << 11)) << 5);
|
| 6700 |
|
|
else
|
| 6701 |
|
|
return 0;
|
| 6702 |
|
|
|
| 6703 |
|
|
if ((insn & (0x3ff << 1)) == 266 << 1)
|
| 6704 |
|
|
/* add -> addi. */
|
| 6705 |
|
|
insn = 14 << 26;
|
| 6706 |
|
|
else if ((insn & (0x1f << 1)) == 23 << 1
|
| 6707 |
|
|
&& ((insn & (0x1f << 6)) < 14 << 6
|
| 6708 |
|
|
|| ((insn & (0x1f << 6)) >= 16 << 6
|
| 6709 |
|
|
&& (insn & (0x1f << 6)) < 24 << 6)))
|
| 6710 |
|
|
/* load and store indexed -> dform. */
|
| 6711 |
|
|
insn = (32 | ((insn >> 6) & 0x1f)) << 26;
|
| 6712 |
|
|
else if ((insn & (((0x1a << 5) | 0x1f) << 1)) == 21 << 1)
|
| 6713 |
|
|
/* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
|
| 6714 |
|
|
insn = ((58 | ((insn >> 6) & 4)) << 26) | ((insn >> 6) & 1);
|
| 6715 |
|
|
else if ((insn & (((0x1f << 5) | 0x1f) << 1)) == 341 << 1)
|
| 6716 |
|
|
/* lwax -> lwa. */
|
| 6717 |
|
|
insn = (58 << 26) | 2;
|
| 6718 |
|
|
else
|
| 6719 |
|
|
return 0;
|
| 6720 |
|
|
insn |= rtra;
|
| 6721 |
|
|
return insn;
|
| 6722 |
|
|
}
|
| 6723 |
|
|
|
| 6724 |
|
|
/* If INSN is an opcode that may be used with an @tprel operand, return
|
| 6725 |
|
|
the transformed insn for an undefined weak symbol, ie. with the
|
| 6726 |
|
|
thread pointer REG operand removed. Otherwise return 0. */
|
| 6727 |
|
|
|
| 6728 |
|
|
unsigned int
|
| 6729 |
|
|
_bfd_elf_ppc_at_tprel_transform (unsigned int insn, unsigned int reg)
|
| 6730 |
|
|
{
|
| 6731 |
|
|
if ((insn & (0x1f << 16)) == reg << 16
|
| 6732 |
|
|
&& ((insn & (0x3f << 26)) == 14u << 26 /* addi */
|
| 6733 |
|
|
|| (insn & (0x3f << 26)) == 15u << 26 /* addis */
|
| 6734 |
|
|
|| (insn & (0x3f << 26)) == 32u << 26 /* lwz */
|
| 6735 |
|
|
|| (insn & (0x3f << 26)) == 34u << 26 /* lbz */
|
| 6736 |
|
|
|| (insn & (0x3f << 26)) == 36u << 26 /* stw */
|
| 6737 |
|
|
|| (insn & (0x3f << 26)) == 38u << 26 /* stb */
|
| 6738 |
|
|
|| (insn & (0x3f << 26)) == 40u << 26 /* lhz */
|
| 6739 |
|
|
|| (insn & (0x3f << 26)) == 42u << 26 /* lha */
|
| 6740 |
|
|
|| (insn & (0x3f << 26)) == 44u << 26 /* sth */
|
| 6741 |
|
|
|| (insn & (0x3f << 26)) == 46u << 26 /* lmw */
|
| 6742 |
|
|
|| (insn & (0x3f << 26)) == 47u << 26 /* stmw */
|
| 6743 |
|
|
|| (insn & (0x3f << 26)) == 48u << 26 /* lfs */
|
| 6744 |
|
|
|| (insn & (0x3f << 26)) == 50u << 26 /* lfd */
|
| 6745 |
|
|
|| (insn & (0x3f << 26)) == 52u << 26 /* stfs */
|
| 6746 |
|
|
|| (insn & (0x3f << 26)) == 54u << 26 /* stfd */
|
| 6747 |
|
|
|| ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
|
| 6748 |
|
|
&& (insn & 3) != 1)
|
| 6749 |
|
|
|| ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */
|
| 6750 |
|
|
&& ((insn & 3) == 0 || (insn & 3) == 3))))
|
| 6751 |
|
|
{
|
| 6752 |
|
|
insn &= ~(0x1f << 16);
|
| 6753 |
|
|
}
|
| 6754 |
|
|
else if ((insn & (0x1f << 21)) == reg << 21
|
| 6755 |
|
|
&& ((insn & (0x3e << 26)) == 24u << 26 /* ori, oris */
|
| 6756 |
|
|
|| (insn & (0x3e << 26)) == 26u << 26 /* xori,xoris */
|
| 6757 |
|
|
|| (insn & (0x3e << 26)) == 28u << 26 /* andi,andis */))
|
| 6758 |
|
|
{
|
| 6759 |
|
|
insn &= ~(0x1f << 21);
|
| 6760 |
|
|
insn |= (insn & (0x1f << 16)) << 5;
|
| 6761 |
|
|
if ((insn & (0x3e << 26)) == 26 << 26 /* xori,xoris */)
|
| 6762 |
|
|
insn -= 2 >> 26; /* convert to ori,oris */
|
| 6763 |
|
|
}
|
| 6764 |
|
|
else
|
| 6765 |
|
|
insn = 0;
|
| 6766 |
|
|
return insn;
|
| 6767 |
|
|
}
|
| 6768 |
|
|
|
| 6769 |
|
|
/* The RELOCATE_SECTION function is called by the ELF backend linker
|
| 6770 |
|
|
to handle the relocations for a section.
|
| 6771 |
|
|
|
| 6772 |
|
|
The relocs are always passed as Rela structures; if the section
|
| 6773 |
|
|
actually uses Rel structures, the r_addend field will always be
|
| 6774 |
|
|
zero.
|
| 6775 |
|
|
|
| 6776 |
|
|
This function is responsible for adjust the section contents as
|
| 6777 |
|
|
necessary, and (if using Rela relocs and generating a
|
| 6778 |
|
|
relocatable output file) adjusting the reloc addend as
|
| 6779 |
|
|
necessary.
|
| 6780 |
|
|
|
| 6781 |
|
|
This function does not have to worry about setting the reloc
|
| 6782 |
|
|
address or the reloc symbol index.
|
| 6783 |
|
|
|
| 6784 |
|
|
LOCAL_SYMS is a pointer to the swapped in local symbols.
|
| 6785 |
|
|
|
| 6786 |
|
|
LOCAL_SECTIONS is an array giving the section in the input file
|
| 6787 |
|
|
corresponding to the st_shndx field of each local symbol.
|
| 6788 |
|
|
|
| 6789 |
|
|
The global hash table entry for the global symbols can be found
|
| 6790 |
|
|
via elf_sym_hashes (input_bfd).
|
| 6791 |
|
|
|
| 6792 |
|
|
When generating relocatable output, this function must handle
|
| 6793 |
|
|
STB_LOCAL/STT_SECTION symbols specially. The output symbol is
|
| 6794 |
|
|
going to be the section symbol corresponding to the output
|
| 6795 |
|
|
section, which means that the addend must be adjusted
|
| 6796 |
|
|
accordingly. */
|
| 6797 |
|
|
|
| 6798 |
|
|
static bfd_boolean
|
| 6799 |
|
|
ppc_elf_relocate_section (bfd *output_bfd,
|
| 6800 |
|
|
struct bfd_link_info *info,
|
| 6801 |
|
|
bfd *input_bfd,
|
| 6802 |
|
|
asection *input_section,
|
| 6803 |
|
|
bfd_byte *contents,
|
| 6804 |
|
|
Elf_Internal_Rela *relocs,
|
| 6805 |
|
|
Elf_Internal_Sym *local_syms,
|
| 6806 |
|
|
asection **local_sections)
|
| 6807 |
|
|
{
|
| 6808 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 6809 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
| 6810 |
|
|
struct ppc_elf_link_hash_table *htab;
|
| 6811 |
|
|
Elf_Internal_Rela *rel;
|
| 6812 |
|
|
Elf_Internal_Rela *relend;
|
| 6813 |
|
|
Elf_Internal_Rela outrel;
|
| 6814 |
|
|
asection *got2, *sreloc = NULL;
|
| 6815 |
|
|
bfd_vma *local_got_offsets;
|
| 6816 |
|
|
bfd_boolean ret = TRUE;
|
| 6817 |
|
|
bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0);
|
| 6818 |
|
|
bfd_boolean is_vxworks_tls;
|
| 6819 |
|
|
|
| 6820 |
|
|
#ifdef DEBUG
|
| 6821 |
|
|
_bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
|
| 6822 |
|
|
"%ld relocations%s",
|
| 6823 |
|
|
input_bfd, input_section,
|
| 6824 |
|
|
(long) input_section->reloc_count,
|
| 6825 |
|
|
(info->relocatable) ? " (relocatable)" : "");
|
| 6826 |
|
|
#endif
|
| 6827 |
|
|
|
| 6828 |
|
|
got2 = bfd_get_section_by_name (input_bfd, ".got2");
|
| 6829 |
|
|
|
| 6830 |
|
|
/* Initialize howto table if not already done. */
|
| 6831 |
|
|
if (!ppc_elf_howto_table[R_PPC_ADDR32])
|
| 6832 |
|
|
ppc_elf_howto_init ();
|
| 6833 |
|
|
|
| 6834 |
|
|
htab = ppc_elf_hash_table (info);
|
| 6835 |
|
|
local_got_offsets = elf_local_got_offsets (input_bfd);
|
| 6836 |
|
|
symtab_hdr = &elf_symtab_hdr (input_bfd);
|
| 6837 |
|
|
sym_hashes = elf_sym_hashes (input_bfd);
|
| 6838 |
|
|
/* We have to handle relocations in vxworks .tls_vars sections
|
| 6839 |
|
|
specially, because the dynamic loader is 'weird'. */
|
| 6840 |
|
|
is_vxworks_tls = (htab->is_vxworks && info->shared
|
| 6841 |
|
|
&& !strcmp (input_section->output_section->name,
|
| 6842 |
|
|
".tls_vars"));
|
| 6843 |
|
|
rel = relocs;
|
| 6844 |
|
|
relend = relocs + input_section->reloc_count;
|
| 6845 |
|
|
for (; rel < relend; rel++)
|
| 6846 |
|
|
{
|
| 6847 |
|
|
enum elf_ppc_reloc_type r_type;
|
| 6848 |
|
|
bfd_vma addend;
|
| 6849 |
|
|
bfd_reloc_status_type r;
|
| 6850 |
|
|
Elf_Internal_Sym *sym;
|
| 6851 |
|
|
asection *sec;
|
| 6852 |
|
|
struct elf_link_hash_entry *h;
|
| 6853 |
|
|
const char *sym_name;
|
| 6854 |
|
|
reloc_howto_type *howto;
|
| 6855 |
|
|
unsigned long r_symndx;
|
| 6856 |
|
|
bfd_vma relocation;
|
| 6857 |
|
|
bfd_vma branch_bit, from;
|
| 6858 |
|
|
bfd_boolean unresolved_reloc;
|
| 6859 |
|
|
bfd_boolean warned;
|
| 6860 |
|
|
unsigned int tls_type, tls_mask, tls_gd;
|
| 6861 |
|
|
struct plt_entry **ifunc;
|
| 6862 |
|
|
|
| 6863 |
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
| 6864 |
|
|
sym = NULL;
|
| 6865 |
|
|
sec = NULL;
|
| 6866 |
|
|
h = NULL;
|
| 6867 |
|
|
unresolved_reloc = FALSE;
|
| 6868 |
|
|
warned = FALSE;
|
| 6869 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
| 6870 |
|
|
|
| 6871 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
| 6872 |
|
|
{
|
| 6873 |
|
|
sym = local_syms + r_symndx;
|
| 6874 |
|
|
sec = local_sections[r_symndx];
|
| 6875 |
|
|
sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
|
| 6876 |
|
|
|
| 6877 |
|
|
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
|
| 6878 |
|
|
}
|
| 6879 |
|
|
else
|
| 6880 |
|
|
{
|
| 6881 |
|
|
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
|
| 6882 |
|
|
r_symndx, symtab_hdr, sym_hashes,
|
| 6883 |
|
|
h, sec, relocation,
|
| 6884 |
|
|
unresolved_reloc, warned);
|
| 6885 |
|
|
|
| 6886 |
|
|
sym_name = h->root.root.string;
|
| 6887 |
|
|
}
|
| 6888 |
|
|
|
| 6889 |
|
|
if (sec != NULL && elf_discarded_section (sec))
|
| 6890 |
|
|
{
|
| 6891 |
|
|
/* For relocs against symbols from removed linkonce sections,
|
| 6892 |
|
|
or sections discarded by a linker script, we just want the
|
| 6893 |
|
|
section contents zeroed. Avoid any special processing. */
|
| 6894 |
|
|
howto = NULL;
|
| 6895 |
|
|
if (r_type < R_PPC_max)
|
| 6896 |
|
|
howto = ppc_elf_howto_table[r_type];
|
| 6897 |
|
|
RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
|
| 6898 |
|
|
rel, relend, howto, contents);
|
| 6899 |
|
|
}
|
| 6900 |
|
|
|
| 6901 |
|
|
if (info->relocatable)
|
| 6902 |
|
|
{
|
| 6903 |
|
|
if (got2 != NULL
|
| 6904 |
|
|
&& r_type == R_PPC_PLTREL24
|
| 6905 |
|
|
&& rel->r_addend >= 32768)
|
| 6906 |
|
|
{
|
| 6907 |
|
|
/* R_PPC_PLTREL24 is rather special. If non-zero, the
|
| 6908 |
|
|
addend specifies the GOT pointer offset within .got2. */
|
| 6909 |
|
|
rel->r_addend += got2->output_offset;
|
| 6910 |
|
|
}
|
| 6911 |
|
|
continue;
|
| 6912 |
|
|
}
|
| 6913 |
|
|
|
| 6914 |
|
|
/* TLS optimizations. Replace instruction sequences and relocs
|
| 6915 |
|
|
based on information we collected in tls_optimize. We edit
|
| 6916 |
|
|
RELOCS so that --emit-relocs will output something sensible
|
| 6917 |
|
|
for the final instruction stream. */
|
| 6918 |
|
|
tls_mask = 0;
|
| 6919 |
|
|
tls_gd = 0;
|
| 6920 |
|
|
if (h != NULL)
|
| 6921 |
|
|
tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
|
| 6922 |
|
|
else if (local_got_offsets != NULL)
|
| 6923 |
|
|
{
|
| 6924 |
|
|
struct plt_entry **local_plt;
|
| 6925 |
|
|
char *lgot_masks;
|
| 6926 |
|
|
local_plt
|
| 6927 |
|
|
= (struct plt_entry **) (local_got_offsets + symtab_hdr->sh_info);
|
| 6928 |
|
|
lgot_masks = (char *) (local_plt + symtab_hdr->sh_info);
|
| 6929 |
|
|
tls_mask = lgot_masks[r_symndx];
|
| 6930 |
|
|
}
|
| 6931 |
|
|
|
| 6932 |
|
|
/* Ensure reloc mapping code below stays sane. */
|
| 6933 |
|
|
if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
|
| 6934 |
|
|
|| (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
|
| 6935 |
|
|
|| (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
|
| 6936 |
|
|
|| (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
|
| 6937 |
|
|
|| (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
|
| 6938 |
|
|
|| (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
|
| 6939 |
|
|
|| (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
|
| 6940 |
|
|
|| (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
|
| 6941 |
|
|
abort ();
|
| 6942 |
|
|
switch (r_type)
|
| 6943 |
|
|
{
|
| 6944 |
|
|
default:
|
| 6945 |
|
|
break;
|
| 6946 |
|
|
|
| 6947 |
|
|
case R_PPC_GOT_TPREL16:
|
| 6948 |
|
|
case R_PPC_GOT_TPREL16_LO:
|
| 6949 |
|
|
if ((tls_mask & TLS_TLS) != 0
|
| 6950 |
|
|
&& (tls_mask & TLS_TPREL) == 0)
|
| 6951 |
|
|
{
|
| 6952 |
|
|
bfd_vma insn;
|
| 6953 |
|
|
|
| 6954 |
|
|
insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset);
|
| 6955 |
|
|
insn &= 31 << 21;
|
| 6956 |
|
|
insn |= 0x3c020000; /* addis 0,2,0 */
|
| 6957 |
|
|
bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset);
|
| 6958 |
|
|
r_type = R_PPC_TPREL16_HA;
|
| 6959 |
|
|
rel->r_info = ELF32_R_INFO (r_symndx, r_type);
|
| 6960 |
|
|
}
|
| 6961 |
|
|
break;
|
| 6962 |
|
|
|
| 6963 |
|
|
case R_PPC_TLS:
|
| 6964 |
|
|
if ((tls_mask & TLS_TLS) != 0
|
| 6965 |
|
|
&& (tls_mask & TLS_TPREL) == 0)
|
| 6966 |
|
|
{
|
| 6967 |
|
|
bfd_vma insn;
|
| 6968 |
|
|
|
| 6969 |
|
|
insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
|
| 6970 |
|
|
insn = _bfd_elf_ppc_at_tls_transform (insn, 2);
|
| 6971 |
|
|
if (insn == 0)
|
| 6972 |
|
|
abort ();
|
| 6973 |
|
|
bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
|
| 6974 |
|
|
r_type = R_PPC_TPREL16_LO;
|
| 6975 |
|
|
rel->r_info = ELF32_R_INFO (r_symndx, r_type);
|
| 6976 |
|
|
|
| 6977 |
|
|
/* Was PPC_TLS which sits on insn boundary, now
|
| 6978 |
|
|
PPC_TPREL16_LO which is at low-order half-word. */
|
| 6979 |
|
|
rel->r_offset += d_offset;
|
| 6980 |
|
|
}
|
| 6981 |
|
|
break;
|
| 6982 |
|
|
|
| 6983 |
|
|
case R_PPC_GOT_TLSGD16_HI:
|
| 6984 |
|
|
case R_PPC_GOT_TLSGD16_HA:
|
| 6985 |
|
|
tls_gd = TLS_TPRELGD;
|
| 6986 |
|
|
if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
|
| 6987 |
|
|
goto tls_gdld_hi;
|
| 6988 |
|
|
break;
|
| 6989 |
|
|
|
| 6990 |
|
|
case R_PPC_GOT_TLSLD16_HI:
|
| 6991 |
|
|
case R_PPC_GOT_TLSLD16_HA:
|
| 6992 |
|
|
if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
|
| 6993 |
|
|
{
|
| 6994 |
|
|
tls_gdld_hi:
|
| 6995 |
|
|
if ((tls_mask & tls_gd) != 0)
|
| 6996 |
|
|
r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
|
| 6997 |
|
|
+ R_PPC_GOT_TPREL16);
|
| 6998 |
|
|
else
|
| 6999 |
|
|
{
|
| 7000 |
|
|
bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
|
| 7001 |
|
|
rel->r_offset -= d_offset;
|
| 7002 |
|
|
r_type = R_PPC_NONE;
|
| 7003 |
|
|
}
|
| 7004 |
|
|
rel->r_info = ELF32_R_INFO (r_symndx, r_type);
|
| 7005 |
|
|
}
|
| 7006 |
|
|
break;
|
| 7007 |
|
|
|
| 7008 |
|
|
case R_PPC_GOT_TLSGD16:
|
| 7009 |
|
|
case R_PPC_GOT_TLSGD16_LO:
|
| 7010 |
|
|
tls_gd = TLS_TPRELGD;
|
| 7011 |
|
|
if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
|
| 7012 |
|
|
goto tls_ldgd_opt;
|
| 7013 |
|
|
break;
|
| 7014 |
|
|
|
| 7015 |
|
|
case R_PPC_GOT_TLSLD16:
|
| 7016 |
|
|
case R_PPC_GOT_TLSLD16_LO:
|
| 7017 |
|
|
if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
|
| 7018 |
|
|
{
|
| 7019 |
|
|
unsigned int insn1, insn2;
|
| 7020 |
|
|
bfd_vma offset;
|
| 7021 |
|
|
|
| 7022 |
|
|
tls_ldgd_opt:
|
| 7023 |
|
|
offset = (bfd_vma) -1;
|
| 7024 |
|
|
/* If not using the newer R_PPC_TLSGD/LD to mark
|
| 7025 |
|
|
__tls_get_addr calls, we must trust that the call
|
| 7026 |
|
|
stays with its arg setup insns, ie. that the next
|
| 7027 |
|
|
reloc is the __tls_get_addr call associated with
|
| 7028 |
|
|
the current reloc. Edit both insns. */
|
| 7029 |
|
|
if (input_section->has_tls_get_addr_call
|
| 7030 |
|
|
&& rel + 1 < relend
|
| 7031 |
|
|
&& branch_reloc_hash_match (input_bfd, rel + 1,
|
| 7032 |
|
|
htab->tls_get_addr))
|
| 7033 |
|
|
offset = rel[1].r_offset;
|
| 7034 |
|
|
if ((tls_mask & tls_gd) != 0)
|
| 7035 |
|
|
{
|
| 7036 |
|
|
/* IE */
|
| 7037 |
|
|
insn1 = bfd_get_32 (output_bfd,
|
| 7038 |
|
|
contents + rel->r_offset - d_offset);
|
| 7039 |
|
|
insn1 &= (1 << 26) - 1;
|
| 7040 |
|
|
insn1 |= 32 << 26; /* lwz */
|
| 7041 |
|
|
if (offset != (bfd_vma) -1)
|
| 7042 |
|
|
{
|
| 7043 |
|
|
rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
|
| 7044 |
|
|
insn2 = 0x7c631214; /* add 3,3,2 */
|
| 7045 |
|
|
bfd_put_32 (output_bfd, insn2, contents + offset);
|
| 7046 |
|
|
}
|
| 7047 |
|
|
r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
|
| 7048 |
|
|
+ R_PPC_GOT_TPREL16);
|
| 7049 |
|
|
rel->r_info = ELF32_R_INFO (r_symndx, r_type);
|
| 7050 |
|
|
}
|
| 7051 |
|
|
else
|
| 7052 |
|
|
{
|
| 7053 |
|
|
/* LE */
|
| 7054 |
|
|
insn1 = 0x3c620000; /* addis 3,2,0 */
|
| 7055 |
|
|
if (tls_gd == 0)
|
| 7056 |
|
|
{
|
| 7057 |
|
|
/* Was an LD reloc. */
|
| 7058 |
|
|
for (r_symndx = 0;
|
| 7059 |
|
|
r_symndx < symtab_hdr->sh_info;
|
| 7060 |
|
|
r_symndx++)
|
| 7061 |
|
|
if (local_sections[r_symndx] == sec)
|
| 7062 |
|
|
break;
|
| 7063 |
|
|
if (r_symndx >= symtab_hdr->sh_info)
|
| 7064 |
|
|
r_symndx = STN_UNDEF;
|
| 7065 |
|
|
rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
|
| 7066 |
|
|
if (r_symndx != STN_UNDEF)
|
| 7067 |
|
|
rel->r_addend -= (local_syms[r_symndx].st_value
|
| 7068 |
|
|
+ sec->output_offset
|
| 7069 |
|
|
+ sec->output_section->vma);
|
| 7070 |
|
|
}
|
| 7071 |
|
|
r_type = R_PPC_TPREL16_HA;
|
| 7072 |
|
|
rel->r_info = ELF32_R_INFO (r_symndx, r_type);
|
| 7073 |
|
|
if (offset != (bfd_vma) -1)
|
| 7074 |
|
|
{
|
| 7075 |
|
|
rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
|
| 7076 |
|
|
rel[1].r_offset = offset + d_offset;
|
| 7077 |
|
|
rel[1].r_addend = rel->r_addend;
|
| 7078 |
|
|
insn2 = 0x38630000; /* addi 3,3,0 */
|
| 7079 |
|
|
bfd_put_32 (output_bfd, insn2, contents + offset);
|
| 7080 |
|
|
}
|
| 7081 |
|
|
}
|
| 7082 |
|
|
bfd_put_32 (output_bfd, insn1,
|
| 7083 |
|
|
contents + rel->r_offset - d_offset);
|
| 7084 |
|
|
if (tls_gd == 0)
|
| 7085 |
|
|
{
|
| 7086 |
|
|
/* We changed the symbol on an LD reloc. Start over
|
| 7087 |
|
|
in order to get h, sym, sec etc. right. */
|
| 7088 |
|
|
rel--;
|
| 7089 |
|
|
continue;
|
| 7090 |
|
|
}
|
| 7091 |
|
|
}
|
| 7092 |
|
|
break;
|
| 7093 |
|
|
|
| 7094 |
|
|
case R_PPC_TLSGD:
|
| 7095 |
|
|
if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0)
|
| 7096 |
|
|
{
|
| 7097 |
|
|
unsigned int insn2;
|
| 7098 |
|
|
bfd_vma offset = rel->r_offset;
|
| 7099 |
|
|
|
| 7100 |
|
|
if ((tls_mask & TLS_TPRELGD) != 0)
|
| 7101 |
|
|
{
|
| 7102 |
|
|
/* IE */
|
| 7103 |
|
|
r_type = R_PPC_NONE;
|
| 7104 |
|
|
insn2 = 0x7c631214; /* add 3,3,2 */
|
| 7105 |
|
|
}
|
| 7106 |
|
|
else
|
| 7107 |
|
|
{
|
| 7108 |
|
|
/* LE */
|
| 7109 |
|
|
r_type = R_PPC_TPREL16_LO;
|
| 7110 |
|
|
rel->r_offset += d_offset;
|
| 7111 |
|
|
insn2 = 0x38630000; /* addi 3,3,0 */
|
| 7112 |
|
|
}
|
| 7113 |
|
|
rel->r_info = ELF32_R_INFO (r_symndx, r_type);
|
| 7114 |
|
|
bfd_put_32 (output_bfd, insn2, contents + offset);
|
| 7115 |
|
|
/* Zap the reloc on the _tls_get_addr call too. */
|
| 7116 |
|
|
BFD_ASSERT (offset == rel[1].r_offset);
|
| 7117 |
|
|
rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
|
| 7118 |
|
|
}
|
| 7119 |
|
|
break;
|
| 7120 |
|
|
|
| 7121 |
|
|
case R_PPC_TLSLD:
|
| 7122 |
|
|
if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0)
|
| 7123 |
|
|
{
|
| 7124 |
|
|
unsigned int insn2;
|
| 7125 |
|
|
|
| 7126 |
|
|
for (r_symndx = 0;
|
| 7127 |
|
|
r_symndx < symtab_hdr->sh_info;
|
| 7128 |
|
|
r_symndx++)
|
| 7129 |
|
|
if (local_sections[r_symndx] == sec)
|
| 7130 |
|
|
break;
|
| 7131 |
|
|
if (r_symndx >= symtab_hdr->sh_info)
|
| 7132 |
|
|
r_symndx = STN_UNDEF;
|
| 7133 |
|
|
rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
|
| 7134 |
|
|
if (r_symndx != STN_UNDEF)
|
| 7135 |
|
|
rel->r_addend -= (local_syms[r_symndx].st_value
|
| 7136 |
|
|
+ sec->output_offset
|
| 7137 |
|
|
+ sec->output_section->vma);
|
| 7138 |
|
|
|
| 7139 |
|
|
rel->r_info = ELF32_R_INFO (r_symndx, R_PPC_TPREL16_LO);
|
| 7140 |
|
|
rel->r_offset += d_offset;
|
| 7141 |
|
|
insn2 = 0x38630000; /* addi 3,3,0 */
|
| 7142 |
|
|
bfd_put_32 (output_bfd, insn2,
|
| 7143 |
|
|
contents + rel->r_offset - d_offset);
|
| 7144 |
|
|
/* Zap the reloc on the _tls_get_addr call too. */
|
| 7145 |
|
|
BFD_ASSERT (rel->r_offset - d_offset == rel[1].r_offset);
|
| 7146 |
|
|
rel[1].r_info = ELF32_R_INFO (STN_UNDEF, R_PPC_NONE);
|
| 7147 |
|
|
rel--;
|
| 7148 |
|
|
continue;
|
| 7149 |
|
|
}
|
| 7150 |
|
|
break;
|
| 7151 |
|
|
}
|
| 7152 |
|
|
|
| 7153 |
|
|
/* Handle other relocations that tweak non-addend part of insn. */
|
| 7154 |
|
|
branch_bit = 0;
|
| 7155 |
|
|
switch (r_type)
|
| 7156 |
|
|
{
|
| 7157 |
|
|
default:
|
| 7158 |
|
|
break;
|
| 7159 |
|
|
|
| 7160 |
|
|
/* Branch taken prediction relocations. */
|
| 7161 |
|
|
case R_PPC_ADDR14_BRTAKEN:
|
| 7162 |
|
|
case R_PPC_REL14_BRTAKEN:
|
| 7163 |
|
|
branch_bit = BRANCH_PREDICT_BIT;
|
| 7164 |
|
|
/* Fall thru */
|
| 7165 |
|
|
|
| 7166 |
|
|
/* Branch not taken prediction relocations. */
|
| 7167 |
|
|
case R_PPC_ADDR14_BRNTAKEN:
|
| 7168 |
|
|
case R_PPC_REL14_BRNTAKEN:
|
| 7169 |
|
|
{
|
| 7170 |
|
|
bfd_vma insn;
|
| 7171 |
|
|
|
| 7172 |
|
|
insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
|
| 7173 |
|
|
insn &= ~BRANCH_PREDICT_BIT;
|
| 7174 |
|
|
insn |= branch_bit;
|
| 7175 |
|
|
|
| 7176 |
|
|
from = (rel->r_offset
|
| 7177 |
|
|
+ input_section->output_offset
|
| 7178 |
|
|
+ input_section->output_section->vma);
|
| 7179 |
|
|
|
| 7180 |
|
|
/* Invert 'y' bit if not the default. */
|
| 7181 |
|
|
if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
|
| 7182 |
|
|
insn ^= BRANCH_PREDICT_BIT;
|
| 7183 |
|
|
|
| 7184 |
|
|
bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
|
| 7185 |
|
|
break;
|
| 7186 |
|
|
}
|
| 7187 |
|
|
}
|
| 7188 |
|
|
|
| 7189 |
|
|
ifunc = NULL;
|
| 7190 |
|
|
if (!htab->is_vxworks)
|
| 7191 |
|
|
{
|
| 7192 |
|
|
struct plt_entry *ent;
|
| 7193 |
|
|
|
| 7194 |
|
|
if (h != NULL)
|
| 7195 |
|
|
{
|
| 7196 |
|
|
if (h->type == STT_GNU_IFUNC)
|
| 7197 |
|
|
ifunc = &h->plt.plist;
|
| 7198 |
|
|
}
|
| 7199 |
|
|
else if (local_got_offsets != NULL
|
| 7200 |
|
|
&& ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
|
| 7201 |
|
|
{
|
| 7202 |
|
|
struct plt_entry **local_plt;
|
| 7203 |
|
|
|
| 7204 |
|
|
local_plt = (struct plt_entry **) (local_got_offsets
|
| 7205 |
|
|
+ symtab_hdr->sh_info);
|
| 7206 |
|
|
ifunc = local_plt + r_symndx;
|
| 7207 |
|
|
}
|
| 7208 |
|
|
|
| 7209 |
|
|
ent = NULL;
|
| 7210 |
|
|
if (ifunc != NULL
|
| 7211 |
|
|
&& (!info->shared
|
| 7212 |
|
|
|| is_branch_reloc (r_type)))
|
| 7213 |
|
|
{
|
| 7214 |
|
|
addend = 0;
|
| 7215 |
|
|
if (r_type == R_PPC_PLTREL24 && info->shared)
|
| 7216 |
|
|
addend = rel->r_addend;
|
| 7217 |
|
|
ent = find_plt_ent (ifunc, got2, addend);
|
| 7218 |
|
|
}
|
| 7219 |
|
|
if (ent != NULL)
|
| 7220 |
|
|
{
|
| 7221 |
|
|
if (h == NULL && (ent->plt.offset & 1) == 0)
|
| 7222 |
|
|
{
|
| 7223 |
|
|
Elf_Internal_Rela rela;
|
| 7224 |
|
|
bfd_byte *loc;
|
| 7225 |
|
|
|
| 7226 |
|
|
rela.r_offset = (htab->iplt->output_section->vma
|
| 7227 |
|
|
+ htab->iplt->output_offset
|
| 7228 |
|
|
+ ent->plt.offset);
|
| 7229 |
|
|
rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
|
| 7230 |
|
|
rela.r_addend = relocation;
|
| 7231 |
|
|
loc = htab->reliplt->contents;
|
| 7232 |
|
|
loc += (htab->reliplt->reloc_count++
|
| 7233 |
|
|
* sizeof (Elf32_External_Rela));
|
| 7234 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
|
| 7235 |
|
|
|
| 7236 |
|
|
ent->plt.offset |= 1;
|
| 7237 |
|
|
}
|
| 7238 |
|
|
if (h == NULL && (ent->glink_offset & 1) == 0)
|
| 7239 |
|
|
{
|
| 7240 |
|
|
unsigned char *p = ((unsigned char *) htab->glink->contents
|
| 7241 |
|
|
+ ent->glink_offset);
|
| 7242 |
|
|
write_glink_stub (ent, htab->iplt, p, info);
|
| 7243 |
|
|
ent->glink_offset |= 1;
|
| 7244 |
|
|
}
|
| 7245 |
|
|
|
| 7246 |
|
|
unresolved_reloc = FALSE;
|
| 7247 |
|
|
if (htab->plt_type == PLT_NEW
|
| 7248 |
|
|
|| !htab->elf.dynamic_sections_created
|
| 7249 |
|
|
|| h == NULL)
|
| 7250 |
|
|
relocation = (htab->glink->output_section->vma
|
| 7251 |
|
|
+ htab->glink->output_offset
|
| 7252 |
|
|
+ (ent->glink_offset & ~1));
|
| 7253 |
|
|
else
|
| 7254 |
|
|
relocation = (htab->plt->output_section->vma
|
| 7255 |
|
|
+ htab->plt->output_offset
|
| 7256 |
|
|
+ ent->plt.offset);
|
| 7257 |
|
|
}
|
| 7258 |
|
|
}
|
| 7259 |
|
|
|
| 7260 |
|
|
addend = rel->r_addend;
|
| 7261 |
|
|
tls_type = 0;
|
| 7262 |
|
|
howto = NULL;
|
| 7263 |
|
|
if (r_type < R_PPC_max)
|
| 7264 |
|
|
howto = ppc_elf_howto_table[r_type];
|
| 7265 |
|
|
switch (r_type)
|
| 7266 |
|
|
{
|
| 7267 |
|
|
default:
|
| 7268 |
|
|
info->callbacks->einfo
|
| 7269 |
161 |
khays |
(_("%P: %B: unknown relocation type %d for symbol %s\n"),
|
| 7270 |
14 |
khays |
input_bfd, (int) r_type, sym_name);
|
| 7271 |
|
|
|
| 7272 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 7273 |
|
|
ret = FALSE;
|
| 7274 |
|
|
continue;
|
| 7275 |
|
|
|
| 7276 |
|
|
case R_PPC_NONE:
|
| 7277 |
|
|
case R_PPC_TLS:
|
| 7278 |
|
|
case R_PPC_TLSGD:
|
| 7279 |
|
|
case R_PPC_TLSLD:
|
| 7280 |
|
|
case R_PPC_EMB_MRKREF:
|
| 7281 |
|
|
case R_PPC_GNU_VTINHERIT:
|
| 7282 |
|
|
case R_PPC_GNU_VTENTRY:
|
| 7283 |
|
|
continue;
|
| 7284 |
|
|
|
| 7285 |
|
|
/* GOT16 relocations. Like an ADDR16 using the symbol's
|
| 7286 |
|
|
address in the GOT as relocation value instead of the
|
| 7287 |
|
|
symbol's value itself. Also, create a GOT entry for the
|
| 7288 |
|
|
symbol and put the symbol value there. */
|
| 7289 |
|
|
case R_PPC_GOT_TLSGD16:
|
| 7290 |
|
|
case R_PPC_GOT_TLSGD16_LO:
|
| 7291 |
|
|
case R_PPC_GOT_TLSGD16_HI:
|
| 7292 |
|
|
case R_PPC_GOT_TLSGD16_HA:
|
| 7293 |
|
|
tls_type = TLS_TLS | TLS_GD;
|
| 7294 |
|
|
goto dogot;
|
| 7295 |
|
|
|
| 7296 |
|
|
case R_PPC_GOT_TLSLD16:
|
| 7297 |
|
|
case R_PPC_GOT_TLSLD16_LO:
|
| 7298 |
|
|
case R_PPC_GOT_TLSLD16_HI:
|
| 7299 |
|
|
case R_PPC_GOT_TLSLD16_HA:
|
| 7300 |
|
|
tls_type = TLS_TLS | TLS_LD;
|
| 7301 |
|
|
goto dogot;
|
| 7302 |
|
|
|
| 7303 |
|
|
case R_PPC_GOT_TPREL16:
|
| 7304 |
|
|
case R_PPC_GOT_TPREL16_LO:
|
| 7305 |
|
|
case R_PPC_GOT_TPREL16_HI:
|
| 7306 |
|
|
case R_PPC_GOT_TPREL16_HA:
|
| 7307 |
|
|
tls_type = TLS_TLS | TLS_TPREL;
|
| 7308 |
|
|
goto dogot;
|
| 7309 |
|
|
|
| 7310 |
|
|
case R_PPC_GOT_DTPREL16:
|
| 7311 |
|
|
case R_PPC_GOT_DTPREL16_LO:
|
| 7312 |
|
|
case R_PPC_GOT_DTPREL16_HI:
|
| 7313 |
|
|
case R_PPC_GOT_DTPREL16_HA:
|
| 7314 |
|
|
tls_type = TLS_TLS | TLS_DTPREL;
|
| 7315 |
|
|
goto dogot;
|
| 7316 |
|
|
|
| 7317 |
|
|
case R_PPC_GOT16:
|
| 7318 |
|
|
case R_PPC_GOT16_LO:
|
| 7319 |
|
|
case R_PPC_GOT16_HI:
|
| 7320 |
|
|
case R_PPC_GOT16_HA:
|
| 7321 |
|
|
tls_mask = 0;
|
| 7322 |
|
|
dogot:
|
| 7323 |
|
|
{
|
| 7324 |
|
|
/* Relocation is to the entry for this symbol in the global
|
| 7325 |
|
|
offset table. */
|
| 7326 |
|
|
bfd_vma off;
|
| 7327 |
|
|
bfd_vma *offp;
|
| 7328 |
|
|
unsigned long indx;
|
| 7329 |
|
|
|
| 7330 |
|
|
if (htab->got == NULL)
|
| 7331 |
|
|
abort ();
|
| 7332 |
|
|
|
| 7333 |
|
|
indx = 0;
|
| 7334 |
|
|
if (tls_type == (TLS_TLS | TLS_LD)
|
| 7335 |
|
|
&& (h == NULL
|
| 7336 |
|
|
|| !h->def_dynamic))
|
| 7337 |
|
|
offp = &htab->tlsld_got.offset;
|
| 7338 |
|
|
else if (h != NULL)
|
| 7339 |
|
|
{
|
| 7340 |
|
|
bfd_boolean dyn;
|
| 7341 |
|
|
dyn = htab->elf.dynamic_sections_created;
|
| 7342 |
|
|
if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
|
| 7343 |
|
|
|| (info->shared
|
| 7344 |
|
|
&& SYMBOL_REFERENCES_LOCAL (info, h)))
|
| 7345 |
|
|
/* This is actually a static link, or it is a
|
| 7346 |
|
|
-Bsymbolic link and the symbol is defined
|
| 7347 |
|
|
locally, or the symbol was forced to be local
|
| 7348 |
|
|
because of a version file. */
|
| 7349 |
|
|
;
|
| 7350 |
|
|
else
|
| 7351 |
|
|
{
|
| 7352 |
|
|
indx = h->dynindx;
|
| 7353 |
|
|
unresolved_reloc = FALSE;
|
| 7354 |
|
|
}
|
| 7355 |
|
|
offp = &h->got.offset;
|
| 7356 |
|
|
}
|
| 7357 |
|
|
else
|
| 7358 |
|
|
{
|
| 7359 |
|
|
if (local_got_offsets == NULL)
|
| 7360 |
|
|
abort ();
|
| 7361 |
|
|
offp = &local_got_offsets[r_symndx];
|
| 7362 |
|
|
}
|
| 7363 |
|
|
|
| 7364 |
|
|
/* The offset must always be a multiple of 4. We use the
|
| 7365 |
|
|
least significant bit to record whether we have already
|
| 7366 |
|
|
processed this entry. */
|
| 7367 |
|
|
off = *offp;
|
| 7368 |
|
|
if ((off & 1) != 0)
|
| 7369 |
|
|
off &= ~1;
|
| 7370 |
|
|
else
|
| 7371 |
|
|
{
|
| 7372 |
|
|
unsigned int tls_m = (tls_mask
|
| 7373 |
|
|
& (TLS_LD | TLS_GD | TLS_DTPREL
|
| 7374 |
|
|
| TLS_TPREL | TLS_TPRELGD));
|
| 7375 |
|
|
|
| 7376 |
|
|
if (offp == &htab->tlsld_got.offset)
|
| 7377 |
|
|
tls_m = TLS_LD;
|
| 7378 |
|
|
else if (h == NULL
|
| 7379 |
|
|
|| !h->def_dynamic)
|
| 7380 |
|
|
tls_m &= ~TLS_LD;
|
| 7381 |
|
|
|
| 7382 |
|
|
/* We might have multiple got entries for this sym.
|
| 7383 |
|
|
Initialize them all. */
|
| 7384 |
|
|
do
|
| 7385 |
|
|
{
|
| 7386 |
|
|
int tls_ty = 0;
|
| 7387 |
|
|
|
| 7388 |
|
|
if ((tls_m & TLS_LD) != 0)
|
| 7389 |
|
|
{
|
| 7390 |
|
|
tls_ty = TLS_TLS | TLS_LD;
|
| 7391 |
|
|
tls_m &= ~TLS_LD;
|
| 7392 |
|
|
}
|
| 7393 |
|
|
else if ((tls_m & TLS_GD) != 0)
|
| 7394 |
|
|
{
|
| 7395 |
|
|
tls_ty = TLS_TLS | TLS_GD;
|
| 7396 |
|
|
tls_m &= ~TLS_GD;
|
| 7397 |
|
|
}
|
| 7398 |
|
|
else if ((tls_m & TLS_DTPREL) != 0)
|
| 7399 |
|
|
{
|
| 7400 |
|
|
tls_ty = TLS_TLS | TLS_DTPREL;
|
| 7401 |
|
|
tls_m &= ~TLS_DTPREL;
|
| 7402 |
|
|
}
|
| 7403 |
|
|
else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
|
| 7404 |
|
|
{
|
| 7405 |
|
|
tls_ty = TLS_TLS | TLS_TPREL;
|
| 7406 |
|
|
tls_m = 0;
|
| 7407 |
|
|
}
|
| 7408 |
|
|
|
| 7409 |
|
|
/* Generate relocs for the dynamic linker. */
|
| 7410 |
|
|
if ((info->shared || indx != 0)
|
| 7411 |
|
|
&& (offp == &htab->tlsld_got.offset
|
| 7412 |
|
|
|| h == NULL
|
| 7413 |
|
|
|| ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|
| 7414 |
|
|
|| h->root.type != bfd_link_hash_undefweak))
|
| 7415 |
|
|
{
|
| 7416 |
|
|
asection *rsec = htab->relgot;
|
| 7417 |
|
|
bfd_byte * loc;
|
| 7418 |
|
|
|
| 7419 |
|
|
outrel.r_offset = (htab->got->output_section->vma
|
| 7420 |
|
|
+ htab->got->output_offset
|
| 7421 |
|
|
+ off);
|
| 7422 |
|
|
outrel.r_addend = 0;
|
| 7423 |
|
|
if (tls_ty & (TLS_LD | TLS_GD))
|
| 7424 |
|
|
{
|
| 7425 |
|
|
outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
|
| 7426 |
|
|
if (tls_ty == (TLS_TLS | TLS_GD))
|
| 7427 |
|
|
{
|
| 7428 |
|
|
loc = rsec->contents;
|
| 7429 |
|
|
loc += (rsec->reloc_count++
|
| 7430 |
|
|
* sizeof (Elf32_External_Rela));
|
| 7431 |
|
|
bfd_elf32_swap_reloca_out (output_bfd,
|
| 7432 |
|
|
&outrel, loc);
|
| 7433 |
|
|
outrel.r_offset += 4;
|
| 7434 |
|
|
outrel.r_info
|
| 7435 |
|
|
= ELF32_R_INFO (indx, R_PPC_DTPREL32);
|
| 7436 |
|
|
}
|
| 7437 |
|
|
}
|
| 7438 |
|
|
else if (tls_ty == (TLS_TLS | TLS_DTPREL))
|
| 7439 |
|
|
outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
|
| 7440 |
|
|
else if (tls_ty == (TLS_TLS | TLS_TPREL))
|
| 7441 |
|
|
outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
|
| 7442 |
|
|
else if (indx != 0)
|
| 7443 |
|
|
outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
|
| 7444 |
|
|
else if (ifunc != NULL)
|
| 7445 |
|
|
outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
|
| 7446 |
|
|
else
|
| 7447 |
|
|
outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
|
| 7448 |
|
|
if (indx == 0 && tls_ty != (TLS_TLS | TLS_LD))
|
| 7449 |
|
|
{
|
| 7450 |
|
|
outrel.r_addend += relocation;
|
| 7451 |
|
|
if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
|
| 7452 |
|
|
outrel.r_addend -= htab->elf.tls_sec->vma;
|
| 7453 |
|
|
}
|
| 7454 |
|
|
loc = rsec->contents;
|
| 7455 |
|
|
loc += (rsec->reloc_count++
|
| 7456 |
|
|
* sizeof (Elf32_External_Rela));
|
| 7457 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
|
| 7458 |
|
|
}
|
| 7459 |
|
|
|
| 7460 |
|
|
/* Init the .got section contents if we're not
|
| 7461 |
|
|
emitting a reloc. */
|
| 7462 |
|
|
else
|
| 7463 |
|
|
{
|
| 7464 |
|
|
bfd_vma value = relocation;
|
| 7465 |
|
|
|
| 7466 |
|
|
if (tls_ty == (TLS_TLS | TLS_LD))
|
| 7467 |
|
|
value = 1;
|
| 7468 |
|
|
else if (tls_ty != 0)
|
| 7469 |
|
|
{
|
| 7470 |
|
|
value -= htab->elf.tls_sec->vma + DTP_OFFSET;
|
| 7471 |
|
|
if (tls_ty == (TLS_TLS | TLS_TPREL))
|
| 7472 |
|
|
value += DTP_OFFSET - TP_OFFSET;
|
| 7473 |
|
|
|
| 7474 |
|
|
if (tls_ty == (TLS_TLS | TLS_GD))
|
| 7475 |
|
|
{
|
| 7476 |
|
|
bfd_put_32 (output_bfd, value,
|
| 7477 |
|
|
htab->got->contents + off + 4);
|
| 7478 |
|
|
value = 1;
|
| 7479 |
|
|
}
|
| 7480 |
|
|
}
|
| 7481 |
|
|
bfd_put_32 (output_bfd, value,
|
| 7482 |
|
|
htab->got->contents + off);
|
| 7483 |
|
|
}
|
| 7484 |
|
|
|
| 7485 |
|
|
off += 4;
|
| 7486 |
|
|
if (tls_ty & (TLS_LD | TLS_GD))
|
| 7487 |
|
|
off += 4;
|
| 7488 |
|
|
}
|
| 7489 |
|
|
while (tls_m != 0);
|
| 7490 |
|
|
|
| 7491 |
|
|
off = *offp;
|
| 7492 |
|
|
*offp = off | 1;
|
| 7493 |
|
|
}
|
| 7494 |
|
|
|
| 7495 |
|
|
if (off >= (bfd_vma) -2)
|
| 7496 |
|
|
abort ();
|
| 7497 |
|
|
|
| 7498 |
|
|
if ((tls_type & TLS_TLS) != 0)
|
| 7499 |
|
|
{
|
| 7500 |
|
|
if (tls_type != (TLS_TLS | TLS_LD))
|
| 7501 |
|
|
{
|
| 7502 |
|
|
if ((tls_mask & TLS_LD) != 0
|
| 7503 |
|
|
&& !(h == NULL
|
| 7504 |
|
|
|| !h->def_dynamic))
|
| 7505 |
|
|
off += 8;
|
| 7506 |
|
|
if (tls_type != (TLS_TLS | TLS_GD))
|
| 7507 |
|
|
{
|
| 7508 |
|
|
if ((tls_mask & TLS_GD) != 0)
|
| 7509 |
|
|
off += 8;
|
| 7510 |
|
|
if (tls_type != (TLS_TLS | TLS_DTPREL))
|
| 7511 |
|
|
{
|
| 7512 |
|
|
if ((tls_mask & TLS_DTPREL) != 0)
|
| 7513 |
|
|
off += 4;
|
| 7514 |
|
|
}
|
| 7515 |
|
|
}
|
| 7516 |
|
|
}
|
| 7517 |
|
|
}
|
| 7518 |
|
|
|
| 7519 |
|
|
relocation = (htab->got->output_section->vma
|
| 7520 |
|
|
+ htab->got->output_offset
|
| 7521 |
|
|
+ off
|
| 7522 |
|
|
- SYM_VAL (htab->elf.hgot));
|
| 7523 |
|
|
|
| 7524 |
|
|
/* Addends on got relocations don't make much sense.
|
| 7525 |
|
|
x+off@got is actually x@got+off, and since the got is
|
| 7526 |
|
|
generated by a hash table traversal, the value in the
|
| 7527 |
|
|
got at entry m+n bears little relation to the entry m. */
|
| 7528 |
|
|
if (addend != 0)
|
| 7529 |
|
|
info->callbacks->einfo
|
| 7530 |
161 |
khays |
(_("%P: %H: non-zero addend on %s reloc against `%s'\n"),
|
| 7531 |
14 |
khays |
input_bfd, input_section, rel->r_offset,
|
| 7532 |
|
|
howto->name,
|
| 7533 |
|
|
sym_name);
|
| 7534 |
|
|
}
|
| 7535 |
|
|
break;
|
| 7536 |
|
|
|
| 7537 |
|
|
/* Relocations that need no special processing. */
|
| 7538 |
|
|
case R_PPC_LOCAL24PC:
|
| 7539 |
|
|
/* It makes no sense to point a local relocation
|
| 7540 |
|
|
at a symbol not in this object. */
|
| 7541 |
|
|
if (unresolved_reloc)
|
| 7542 |
|
|
{
|
| 7543 |
|
|
if (! (*info->callbacks->undefined_symbol) (info,
|
| 7544 |
|
|
h->root.root.string,
|
| 7545 |
|
|
input_bfd,
|
| 7546 |
|
|
input_section,
|
| 7547 |
|
|
rel->r_offset,
|
| 7548 |
|
|
TRUE))
|
| 7549 |
|
|
return FALSE;
|
| 7550 |
|
|
continue;
|
| 7551 |
|
|
}
|
| 7552 |
|
|
break;
|
| 7553 |
|
|
|
| 7554 |
|
|
case R_PPC_DTPREL16:
|
| 7555 |
|
|
case R_PPC_DTPREL16_LO:
|
| 7556 |
|
|
case R_PPC_DTPREL16_HI:
|
| 7557 |
|
|
case R_PPC_DTPREL16_HA:
|
| 7558 |
|
|
addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
|
| 7559 |
|
|
break;
|
| 7560 |
|
|
|
| 7561 |
|
|
/* Relocations that may need to be propagated if this is a shared
|
| 7562 |
|
|
object. */
|
| 7563 |
|
|
case R_PPC_TPREL16:
|
| 7564 |
|
|
case R_PPC_TPREL16_LO:
|
| 7565 |
|
|
case R_PPC_TPREL16_HI:
|
| 7566 |
|
|
case R_PPC_TPREL16_HA:
|
| 7567 |
|
|
if (h != NULL
|
| 7568 |
|
|
&& h->root.type == bfd_link_hash_undefweak
|
| 7569 |
|
|
&& h->dynindx == -1)
|
| 7570 |
|
|
{
|
| 7571 |
|
|
/* Make this relocation against an undefined weak symbol
|
| 7572 |
|
|
resolve to zero. This is really just a tweak, since
|
| 7573 |
|
|
code using weak externs ought to check that they are
|
| 7574 |
|
|
defined before using them. */
|
| 7575 |
|
|
bfd_byte *p = contents + rel->r_offset - d_offset;
|
| 7576 |
|
|
unsigned int insn = bfd_get_32 (output_bfd, p);
|
| 7577 |
|
|
insn = _bfd_elf_ppc_at_tprel_transform (insn, 2);
|
| 7578 |
|
|
if (insn != 0)
|
| 7579 |
|
|
bfd_put_32 (output_bfd, insn, p);
|
| 7580 |
|
|
break;
|
| 7581 |
|
|
}
|
| 7582 |
|
|
addend -= htab->elf.tls_sec->vma + TP_OFFSET;
|
| 7583 |
|
|
/* The TPREL16 relocs shouldn't really be used in shared
|
| 7584 |
|
|
libs as they will result in DT_TEXTREL being set, but
|
| 7585 |
|
|
support them anyway. */
|
| 7586 |
|
|
goto dodyn;
|
| 7587 |
|
|
|
| 7588 |
|
|
case R_PPC_TPREL32:
|
| 7589 |
|
|
addend -= htab->elf.tls_sec->vma + TP_OFFSET;
|
| 7590 |
|
|
goto dodyn;
|
| 7591 |
|
|
|
| 7592 |
|
|
case R_PPC_DTPREL32:
|
| 7593 |
|
|
addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
|
| 7594 |
|
|
goto dodyn;
|
| 7595 |
|
|
|
| 7596 |
|
|
case R_PPC_DTPMOD32:
|
| 7597 |
|
|
relocation = 1;
|
| 7598 |
|
|
addend = 0;
|
| 7599 |
|
|
goto dodyn;
|
| 7600 |
|
|
|
| 7601 |
|
|
case R_PPC_REL16:
|
| 7602 |
|
|
case R_PPC_REL16_LO:
|
| 7603 |
|
|
case R_PPC_REL16_HI:
|
| 7604 |
|
|
case R_PPC_REL16_HA:
|
| 7605 |
|
|
break;
|
| 7606 |
|
|
|
| 7607 |
|
|
case R_PPC_REL32:
|
| 7608 |
|
|
if (h == NULL || h == htab->elf.hgot)
|
| 7609 |
|
|
break;
|
| 7610 |
|
|
/* fall through */
|
| 7611 |
|
|
|
| 7612 |
|
|
case R_PPC_ADDR32:
|
| 7613 |
|
|
case R_PPC_ADDR16:
|
| 7614 |
|
|
case R_PPC_ADDR16_LO:
|
| 7615 |
|
|
case R_PPC_ADDR16_HI:
|
| 7616 |
|
|
case R_PPC_ADDR16_HA:
|
| 7617 |
|
|
case R_PPC_UADDR32:
|
| 7618 |
|
|
case R_PPC_UADDR16:
|
| 7619 |
|
|
goto dodyn;
|
| 7620 |
|
|
|
| 7621 |
|
|
case R_PPC_REL24:
|
| 7622 |
|
|
case R_PPC_REL14:
|
| 7623 |
|
|
case R_PPC_REL14_BRTAKEN:
|
| 7624 |
|
|
case R_PPC_REL14_BRNTAKEN:
|
| 7625 |
|
|
/* If these relocations are not to a named symbol, they can be
|
| 7626 |
|
|
handled right here, no need to bother the dynamic linker. */
|
| 7627 |
|
|
if (SYMBOL_CALLS_LOCAL (info, h)
|
| 7628 |
|
|
|| h == htab->elf.hgot)
|
| 7629 |
|
|
break;
|
| 7630 |
|
|
/* fall through */
|
| 7631 |
|
|
|
| 7632 |
|
|
case R_PPC_ADDR24:
|
| 7633 |
|
|
case R_PPC_ADDR14:
|
| 7634 |
|
|
case R_PPC_ADDR14_BRTAKEN:
|
| 7635 |
|
|
case R_PPC_ADDR14_BRNTAKEN:
|
| 7636 |
|
|
if (h != NULL && !info->shared)
|
| 7637 |
|
|
break;
|
| 7638 |
|
|
/* fall through */
|
| 7639 |
|
|
|
| 7640 |
|
|
dodyn:
|
| 7641 |
|
|
if ((input_section->flags & SEC_ALLOC) == 0
|
| 7642 |
|
|
|| is_vxworks_tls)
|
| 7643 |
|
|
break;
|
| 7644 |
|
|
|
| 7645 |
|
|
if ((info->shared
|
| 7646 |
|
|
&& !(h != NULL
|
| 7647 |
|
|
&& ((h->root.type == bfd_link_hash_undefined
|
| 7648 |
|
|
&& (ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
|
| 7649 |
|
|
|| ELF_ST_VISIBILITY (h->other) == STV_INTERNAL))
|
| 7650 |
|
|
|| (h->root.type == bfd_link_hash_undefweak
|
| 7651 |
|
|
&& ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)))
|
| 7652 |
|
|
&& (must_be_dyn_reloc (info, r_type)
|
| 7653 |
|
|
|| !SYMBOL_CALLS_LOCAL (info, h)))
|
| 7654 |
|
|
|| (ELIMINATE_COPY_RELOCS
|
| 7655 |
|
|
&& !info->shared
|
| 7656 |
|
|
&& h != NULL
|
| 7657 |
|
|
&& h->dynindx != -1
|
| 7658 |
|
|
&& !h->non_got_ref
|
| 7659 |
|
|
&& !h->def_regular))
|
| 7660 |
|
|
{
|
| 7661 |
|
|
int skip;
|
| 7662 |
|
|
bfd_byte * loc;
|
| 7663 |
|
|
#ifdef DEBUG
|
| 7664 |
|
|
fprintf (stderr, "ppc_elf_relocate_section needs to "
|
| 7665 |
|
|
"create relocation for %s\n",
|
| 7666 |
|
|
(h && h->root.root.string
|
| 7667 |
|
|
? h->root.root.string : "<unknown>"));
|
| 7668 |
|
|
#endif
|
| 7669 |
|
|
|
| 7670 |
|
|
/* When generating a shared object, these relocations
|
| 7671 |
|
|
are copied into the output file to be resolved at run
|
| 7672 |
|
|
time. */
|
| 7673 |
|
|
if (sreloc == NULL)
|
| 7674 |
|
|
{
|
| 7675 |
|
|
sreloc = elf_section_data (input_section)->sreloc;
|
| 7676 |
|
|
if (!htab->elf.dynamic_sections_created)
|
| 7677 |
|
|
sreloc = htab->reliplt;
|
| 7678 |
|
|
if (sreloc == NULL)
|
| 7679 |
|
|
return FALSE;
|
| 7680 |
|
|
}
|
| 7681 |
|
|
|
| 7682 |
|
|
skip = 0;
|
| 7683 |
|
|
outrel.r_offset = _bfd_elf_section_offset (output_bfd, info,
|
| 7684 |
|
|
input_section,
|
| 7685 |
|
|
rel->r_offset);
|
| 7686 |
|
|
if (outrel.r_offset == (bfd_vma) -1
|
| 7687 |
|
|
|| outrel.r_offset == (bfd_vma) -2)
|
| 7688 |
|
|
skip = (int) outrel.r_offset;
|
| 7689 |
|
|
outrel.r_offset += (input_section->output_section->vma
|
| 7690 |
|
|
+ input_section->output_offset);
|
| 7691 |
|
|
|
| 7692 |
|
|
if (skip)
|
| 7693 |
|
|
memset (&outrel, 0, sizeof outrel);
|
| 7694 |
|
|
else if ((h != NULL
|
| 7695 |
|
|
&& (h->root.type == bfd_link_hash_undefined
|
| 7696 |
|
|
|| h->root.type == bfd_link_hash_undefweak))
|
| 7697 |
|
|
|| !SYMBOL_REFERENCES_LOCAL (info, h))
|
| 7698 |
|
|
{
|
| 7699 |
|
|
unresolved_reloc = FALSE;
|
| 7700 |
|
|
outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
|
| 7701 |
|
|
outrel.r_addend = rel->r_addend;
|
| 7702 |
|
|
}
|
| 7703 |
|
|
else
|
| 7704 |
|
|
{
|
| 7705 |
|
|
outrel.r_addend = relocation + rel->r_addend;
|
| 7706 |
|
|
|
| 7707 |
|
|
if (r_type != R_PPC_ADDR32)
|
| 7708 |
|
|
{
|
| 7709 |
|
|
long indx = 0;
|
| 7710 |
|
|
|
| 7711 |
|
|
if (ifunc != NULL)
|
| 7712 |
|
|
{
|
| 7713 |
|
|
/* If we get here when building a static
|
| 7714 |
|
|
executable, then the libc startup function
|
| 7715 |
|
|
responsible for applying indirect function
|
| 7716 |
|
|
relocations is going to complain about
|
| 7717 |
|
|
the reloc type.
|
| 7718 |
|
|
If we get here when building a dynamic
|
| 7719 |
|
|
executable, it will be because we have
|
| 7720 |
|
|
a text relocation. The dynamic loader
|
| 7721 |
|
|
will set the text segment writable and
|
| 7722 |
|
|
non-executable to apply text relocations.
|
| 7723 |
|
|
So we'll segfault when trying to run the
|
| 7724 |
|
|
indirection function to resolve the reloc. */
|
| 7725 |
|
|
info->callbacks->einfo
|
| 7726 |
161 |
khays |
(_("%P: %H: relocation %s for indirect "
|
| 7727 |
14 |
khays |
"function %s unsupported\n"),
|
| 7728 |
|
|
input_bfd, input_section, rel->r_offset,
|
| 7729 |
|
|
howto->name,
|
| 7730 |
|
|
sym_name);
|
| 7731 |
|
|
ret = FALSE;
|
| 7732 |
|
|
}
|
| 7733 |
|
|
else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
|
| 7734 |
|
|
;
|
| 7735 |
|
|
else if (sec == NULL || sec->owner == NULL)
|
| 7736 |
|
|
{
|
| 7737 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 7738 |
|
|
ret = FALSE;
|
| 7739 |
|
|
}
|
| 7740 |
|
|
else
|
| 7741 |
|
|
{
|
| 7742 |
|
|
asection *osec;
|
| 7743 |
|
|
|
| 7744 |
|
|
/* We are turning this relocation into one
|
| 7745 |
|
|
against a section symbol. It would be
|
| 7746 |
|
|
proper to subtract the symbol's value,
|
| 7747 |
|
|
osec->vma, from the emitted reloc addend,
|
| 7748 |
|
|
but ld.so expects buggy relocs.
|
| 7749 |
|
|
FIXME: Why not always use a zero index? */
|
| 7750 |
|
|
osec = sec->output_section;
|
| 7751 |
|
|
indx = elf_section_data (osec)->dynindx;
|
| 7752 |
|
|
if (indx == 0)
|
| 7753 |
|
|
{
|
| 7754 |
|
|
osec = htab->elf.text_index_section;
|
| 7755 |
|
|
indx = elf_section_data (osec)->dynindx;
|
| 7756 |
|
|
}
|
| 7757 |
|
|
BFD_ASSERT (indx != 0);
|
| 7758 |
|
|
#ifdef DEBUG
|
| 7759 |
|
|
if (indx == 0)
|
| 7760 |
|
|
printf ("indx=%ld section=%s flags=%08x name=%s\n",
|
| 7761 |
|
|
indx, osec->name, osec->flags,
|
| 7762 |
|
|
h->root.root.string);
|
| 7763 |
|
|
#endif
|
| 7764 |
|
|
}
|
| 7765 |
|
|
|
| 7766 |
|
|
outrel.r_info = ELF32_R_INFO (indx, r_type);
|
| 7767 |
|
|
}
|
| 7768 |
|
|
else if (ifunc != NULL)
|
| 7769 |
|
|
outrel.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
|
| 7770 |
|
|
else
|
| 7771 |
|
|
outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
|
| 7772 |
|
|
}
|
| 7773 |
|
|
|
| 7774 |
|
|
loc = sreloc->contents;
|
| 7775 |
|
|
loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
|
| 7776 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
|
| 7777 |
|
|
|
| 7778 |
|
|
if (skip == -1)
|
| 7779 |
|
|
continue;
|
| 7780 |
|
|
|
| 7781 |
|
|
/* This reloc will be computed at runtime. We clear the memory
|
| 7782 |
|
|
so that it contains predictable value. */
|
| 7783 |
|
|
if (! skip
|
| 7784 |
|
|
&& ((input_section->flags & SEC_ALLOC) != 0
|
| 7785 |
|
|
|| ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
|
| 7786 |
|
|
{
|
| 7787 |
|
|
relocation = howto->pc_relative ? outrel.r_offset : 0;
|
| 7788 |
|
|
addend = 0;
|
| 7789 |
|
|
break;
|
| 7790 |
|
|
}
|
| 7791 |
|
|
}
|
| 7792 |
|
|
break;
|
| 7793 |
|
|
|
| 7794 |
|
|
case R_PPC_RELAX_PLT:
|
| 7795 |
|
|
case R_PPC_RELAX_PLTREL24:
|
| 7796 |
|
|
if (h != NULL)
|
| 7797 |
|
|
{
|
| 7798 |
|
|
struct plt_entry *ent;
|
| 7799 |
|
|
bfd_vma got2_addend = 0;
|
| 7800 |
|
|
|
| 7801 |
|
|
if (r_type == R_PPC_RELAX_PLTREL24)
|
| 7802 |
|
|
{
|
| 7803 |
|
|
if (info->shared)
|
| 7804 |
|
|
got2_addend = addend;
|
| 7805 |
|
|
addend = 0;
|
| 7806 |
|
|
}
|
| 7807 |
|
|
ent = find_plt_ent (&h->plt.plist, got2, got2_addend);
|
| 7808 |
|
|
if (htab->plt_type == PLT_NEW)
|
| 7809 |
|
|
relocation = (htab->glink->output_section->vma
|
| 7810 |
|
|
+ htab->glink->output_offset
|
| 7811 |
|
|
+ ent->glink_offset);
|
| 7812 |
|
|
else
|
| 7813 |
|
|
relocation = (htab->plt->output_section->vma
|
| 7814 |
|
|
+ htab->plt->output_offset
|
| 7815 |
|
|
+ ent->plt.offset);
|
| 7816 |
|
|
}
|
| 7817 |
|
|
/* Fall thru */
|
| 7818 |
|
|
|
| 7819 |
|
|
case R_PPC_RELAX:
|
| 7820 |
|
|
if (info->shared)
|
| 7821 |
|
|
relocation -= (input_section->output_section->vma
|
| 7822 |
|
|
+ input_section->output_offset
|
| 7823 |
|
|
+ rel->r_offset - 4);
|
| 7824 |
|
|
|
| 7825 |
|
|
{
|
| 7826 |
|
|
unsigned long t0;
|
| 7827 |
|
|
unsigned long t1;
|
| 7828 |
|
|
|
| 7829 |
|
|
t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
|
| 7830 |
|
|
t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
|
| 7831 |
|
|
|
| 7832 |
|
|
/* We're clearing the bits for R_PPC_ADDR16_HA
|
| 7833 |
|
|
and R_PPC_ADDR16_LO here. */
|
| 7834 |
|
|
t0 &= ~0xffff;
|
| 7835 |
|
|
t1 &= ~0xffff;
|
| 7836 |
|
|
|
| 7837 |
|
|
/* t0 is HA, t1 is LO */
|
| 7838 |
|
|
relocation += addend;
|
| 7839 |
|
|
t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
|
| 7840 |
|
|
t1 |= relocation & 0xffff;
|
| 7841 |
|
|
|
| 7842 |
|
|
bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
|
| 7843 |
|
|
bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
|
| 7844 |
|
|
|
| 7845 |
|
|
/* Rewrite the reloc and convert one of the trailing nop
|
| 7846 |
|
|
relocs to describe this relocation. */
|
| 7847 |
|
|
BFD_ASSERT (ELF32_R_TYPE (relend[-1].r_info) == R_PPC_NONE);
|
| 7848 |
|
|
/* The relocs are at the bottom 2 bytes */
|
| 7849 |
|
|
rel[0].r_offset += 2;
|
| 7850 |
|
|
memmove (rel + 1, rel, (relend - rel - 1) * sizeof (*rel));
|
| 7851 |
|
|
rel[0].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_HA);
|
| 7852 |
|
|
rel[1].r_offset += 4;
|
| 7853 |
|
|
rel[1].r_info = ELF32_R_INFO (r_symndx, R_PPC_ADDR16_LO);
|
| 7854 |
|
|
rel++;
|
| 7855 |
|
|
}
|
| 7856 |
|
|
continue;
|
| 7857 |
|
|
|
| 7858 |
|
|
/* Indirect .sdata relocation. */
|
| 7859 |
|
|
case R_PPC_EMB_SDAI16:
|
| 7860 |
|
|
BFD_ASSERT (htab->sdata[0].section != NULL);
|
| 7861 |
|
|
if (!is_static_defined (htab->sdata[0].sym))
|
| 7862 |
|
|
{
|
| 7863 |
|
|
unresolved_reloc = TRUE;
|
| 7864 |
|
|
break;
|
| 7865 |
|
|
}
|
| 7866 |
|
|
relocation
|
| 7867 |
|
|
= elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
|
| 7868 |
|
|
h, relocation, rel);
|
| 7869 |
|
|
addend = 0;
|
| 7870 |
|
|
break;
|
| 7871 |
|
|
|
| 7872 |
|
|
/* Indirect .sdata2 relocation. */
|
| 7873 |
|
|
case R_PPC_EMB_SDA2I16:
|
| 7874 |
|
|
BFD_ASSERT (htab->sdata[1].section != NULL);
|
| 7875 |
|
|
if (!is_static_defined (htab->sdata[1].sym))
|
| 7876 |
|
|
{
|
| 7877 |
|
|
unresolved_reloc = TRUE;
|
| 7878 |
|
|
break;
|
| 7879 |
|
|
}
|
| 7880 |
|
|
relocation
|
| 7881 |
|
|
= elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
|
| 7882 |
|
|
h, relocation, rel);
|
| 7883 |
|
|
addend = 0;
|
| 7884 |
|
|
break;
|
| 7885 |
|
|
|
| 7886 |
|
|
/* Handle the TOC16 reloc. We want to use the offset within the .got
|
| 7887 |
|
|
section, not the actual VMA. This is appropriate when generating
|
| 7888 |
|
|
an embedded ELF object, for which the .got section acts like the
|
| 7889 |
|
|
AIX .toc section. */
|
| 7890 |
|
|
case R_PPC_TOC16: /* phony GOT16 relocations */
|
| 7891 |
|
|
if (sec == NULL || sec->output_section == NULL)
|
| 7892 |
|
|
{
|
| 7893 |
|
|
unresolved_reloc = TRUE;
|
| 7894 |
|
|
break;
|
| 7895 |
|
|
}
|
| 7896 |
|
|
BFD_ASSERT (strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
|
| 7897 |
|
|
|| strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
|
| 7898 |
|
|
|
| 7899 |
|
|
addend -= sec->output_section->vma + sec->output_offset + 0x8000;
|
| 7900 |
|
|
break;
|
| 7901 |
|
|
|
| 7902 |
|
|
case R_PPC_PLTREL24:
|
| 7903 |
|
|
if (h == NULL || ifunc != NULL)
|
| 7904 |
|
|
break;
|
| 7905 |
|
|
/* Relocation is to the entry for this symbol in the
|
| 7906 |
|
|
procedure linkage table. */
|
| 7907 |
|
|
{
|
| 7908 |
|
|
struct plt_entry *ent = find_plt_ent (&h->plt.plist, got2,
|
| 7909 |
|
|
info->shared ? addend : 0);
|
| 7910 |
|
|
addend = 0;
|
| 7911 |
|
|
if (ent == NULL
|
| 7912 |
|
|
|| htab->plt == NULL)
|
| 7913 |
|
|
{
|
| 7914 |
|
|
/* We didn't make a PLT entry for this symbol. This
|
| 7915 |
|
|
happens when statically linking PIC code, or when
|
| 7916 |
|
|
using -Bsymbolic. */
|
| 7917 |
|
|
break;
|
| 7918 |
|
|
}
|
| 7919 |
|
|
|
| 7920 |
|
|
unresolved_reloc = FALSE;
|
| 7921 |
|
|
if (htab->plt_type == PLT_NEW)
|
| 7922 |
|
|
relocation = (htab->glink->output_section->vma
|
| 7923 |
|
|
+ htab->glink->output_offset
|
| 7924 |
|
|
+ ent->glink_offset);
|
| 7925 |
|
|
else
|
| 7926 |
|
|
relocation = (htab->plt->output_section->vma
|
| 7927 |
|
|
+ htab->plt->output_offset
|
| 7928 |
|
|
+ ent->plt.offset);
|
| 7929 |
|
|
}
|
| 7930 |
|
|
break;
|
| 7931 |
|
|
|
| 7932 |
|
|
/* Relocate against _SDA_BASE_. */
|
| 7933 |
|
|
case R_PPC_SDAREL16:
|
| 7934 |
|
|
{
|
| 7935 |
|
|
const char *name;
|
| 7936 |
|
|
struct elf_link_hash_entry *sda = htab->sdata[0].sym;
|
| 7937 |
|
|
|
| 7938 |
|
|
if (sec == NULL
|
| 7939 |
|
|
|| sec->output_section == NULL
|
| 7940 |
|
|
|| !is_static_defined (sda))
|
| 7941 |
|
|
{
|
| 7942 |
|
|
unresolved_reloc = TRUE;
|
| 7943 |
|
|
break;
|
| 7944 |
|
|
}
|
| 7945 |
|
|
addend -= SYM_VAL (sda);
|
| 7946 |
|
|
|
| 7947 |
|
|
name = bfd_get_section_name (abfd, sec->output_section);
|
| 7948 |
|
|
if (! ((CONST_STRNEQ (name, ".sdata")
|
| 7949 |
|
|
&& (name[6] == 0 || name[6] == '.'))
|
| 7950 |
|
|
|| (CONST_STRNEQ (name, ".sbss")
|
| 7951 |
|
|
&& (name[5] == 0 || name[5] == '.'))))
|
| 7952 |
|
|
{
|
| 7953 |
|
|
info->callbacks->einfo
|
| 7954 |
161 |
khays |
(_("%P: %B: the target (%s) of a %s relocation is "
|
| 7955 |
14 |
khays |
"in the wrong output section (%s)\n"),
|
| 7956 |
|
|
input_bfd,
|
| 7957 |
|
|
sym_name,
|
| 7958 |
|
|
howto->name,
|
| 7959 |
|
|
name);
|
| 7960 |
|
|
}
|
| 7961 |
|
|
}
|
| 7962 |
|
|
break;
|
| 7963 |
|
|
|
| 7964 |
|
|
/* Relocate against _SDA2_BASE_. */
|
| 7965 |
|
|
case R_PPC_EMB_SDA2REL:
|
| 7966 |
|
|
{
|
| 7967 |
|
|
const char *name;
|
| 7968 |
|
|
struct elf_link_hash_entry *sda = htab->sdata[1].sym;
|
| 7969 |
|
|
|
| 7970 |
|
|
if (sec == NULL
|
| 7971 |
|
|
|| sec->output_section == NULL
|
| 7972 |
|
|
|| !is_static_defined (sda))
|
| 7973 |
|
|
{
|
| 7974 |
|
|
unresolved_reloc = TRUE;
|
| 7975 |
|
|
break;
|
| 7976 |
|
|
}
|
| 7977 |
|
|
addend -= SYM_VAL (sda);
|
| 7978 |
|
|
|
| 7979 |
|
|
name = bfd_get_section_name (abfd, sec->output_section);
|
| 7980 |
|
|
if (! (CONST_STRNEQ (name, ".sdata2")
|
| 7981 |
|
|
|| CONST_STRNEQ (name, ".sbss2")))
|
| 7982 |
|
|
{
|
| 7983 |
|
|
info->callbacks->einfo
|
| 7984 |
161 |
khays |
(_("%P: %B: the target (%s) of a %s relocation is "
|
| 7985 |
14 |
khays |
"in the wrong output section (%s)\n"),
|
| 7986 |
|
|
input_bfd,
|
| 7987 |
|
|
sym_name,
|
| 7988 |
|
|
howto->name,
|
| 7989 |
|
|
name);
|
| 7990 |
|
|
}
|
| 7991 |
|
|
}
|
| 7992 |
|
|
break;
|
| 7993 |
|
|
|
| 7994 |
|
|
/* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
|
| 7995 |
|
|
case R_PPC_EMB_SDA21:
|
| 7996 |
|
|
case R_PPC_EMB_RELSDA:
|
| 7997 |
|
|
{
|
| 7998 |
|
|
const char *name;
|
| 7999 |
|
|
int reg;
|
| 8000 |
|
|
struct elf_link_hash_entry *sda = NULL;
|
| 8001 |
|
|
|
| 8002 |
|
|
if (sec == NULL || sec->output_section == NULL)
|
| 8003 |
|
|
{
|
| 8004 |
|
|
unresolved_reloc = TRUE;
|
| 8005 |
|
|
break;
|
| 8006 |
|
|
}
|
| 8007 |
|
|
|
| 8008 |
|
|
name = bfd_get_section_name (abfd, sec->output_section);
|
| 8009 |
|
|
if (((CONST_STRNEQ (name, ".sdata")
|
| 8010 |
|
|
&& (name[6] == 0 || name[6] == '.'))
|
| 8011 |
|
|
|| (CONST_STRNEQ (name, ".sbss")
|
| 8012 |
|
|
&& (name[5] == 0 || name[5] == '.'))))
|
| 8013 |
|
|
{
|
| 8014 |
|
|
reg = 13;
|
| 8015 |
|
|
sda = htab->sdata[0].sym;
|
| 8016 |
|
|
}
|
| 8017 |
|
|
else if (CONST_STRNEQ (name, ".sdata2")
|
| 8018 |
|
|
|| CONST_STRNEQ (name, ".sbss2"))
|
| 8019 |
|
|
{
|
| 8020 |
|
|
reg = 2;
|
| 8021 |
|
|
sda = htab->sdata[1].sym;
|
| 8022 |
|
|
}
|
| 8023 |
|
|
else if (strcmp (name, ".PPC.EMB.sdata0") == 0
|
| 8024 |
|
|
|| strcmp (name, ".PPC.EMB.sbss0") == 0)
|
| 8025 |
|
|
{
|
| 8026 |
|
|
reg = 0;
|
| 8027 |
|
|
}
|
| 8028 |
|
|
else
|
| 8029 |
|
|
{
|
| 8030 |
|
|
info->callbacks->einfo
|
| 8031 |
161 |
khays |
(_("%P: %B: the target (%s) of a %s relocation is "
|
| 8032 |
14 |
khays |
"in the wrong output section (%s)\n"),
|
| 8033 |
|
|
input_bfd,
|
| 8034 |
|
|
sym_name,
|
| 8035 |
|
|
howto->name,
|
| 8036 |
|
|
name);
|
| 8037 |
|
|
|
| 8038 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 8039 |
|
|
ret = FALSE;
|
| 8040 |
|
|
continue;
|
| 8041 |
|
|
}
|
| 8042 |
|
|
|
| 8043 |
|
|
if (sda != NULL)
|
| 8044 |
|
|
{
|
| 8045 |
|
|
if (!is_static_defined (sda))
|
| 8046 |
|
|
{
|
| 8047 |
|
|
unresolved_reloc = TRUE;
|
| 8048 |
|
|
break;
|
| 8049 |
|
|
}
|
| 8050 |
|
|
addend -= SYM_VAL (sda);
|
| 8051 |
|
|
}
|
| 8052 |
|
|
|
| 8053 |
|
|
if (r_type == R_PPC_EMB_SDA21)
|
| 8054 |
|
|
{
|
| 8055 |
|
|
bfd_vma insn; /* Fill in register field. */
|
| 8056 |
|
|
|
| 8057 |
|
|
insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
|
| 8058 |
|
|
insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
|
| 8059 |
|
|
bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
|
| 8060 |
|
|
}
|
| 8061 |
|
|
}
|
| 8062 |
|
|
break;
|
| 8063 |
|
|
|
| 8064 |
|
|
/* Relocate against the beginning of the section. */
|
| 8065 |
|
|
case R_PPC_SECTOFF:
|
| 8066 |
|
|
case R_PPC_SECTOFF_LO:
|
| 8067 |
|
|
case R_PPC_SECTOFF_HI:
|
| 8068 |
|
|
case R_PPC_SECTOFF_HA:
|
| 8069 |
|
|
if (sec == NULL || sec->output_section == NULL)
|
| 8070 |
|
|
{
|
| 8071 |
|
|
unresolved_reloc = TRUE;
|
| 8072 |
|
|
break;
|
| 8073 |
|
|
}
|
| 8074 |
|
|
addend -= sec->output_section->vma;
|
| 8075 |
|
|
break;
|
| 8076 |
|
|
|
| 8077 |
|
|
/* Negative relocations. */
|
| 8078 |
|
|
case R_PPC_EMB_NADDR32:
|
| 8079 |
|
|
case R_PPC_EMB_NADDR16:
|
| 8080 |
|
|
case R_PPC_EMB_NADDR16_LO:
|
| 8081 |
|
|
case R_PPC_EMB_NADDR16_HI:
|
| 8082 |
|
|
case R_PPC_EMB_NADDR16_HA:
|
| 8083 |
|
|
addend -= 2 * relocation;
|
| 8084 |
|
|
break;
|
| 8085 |
|
|
|
| 8086 |
|
|
case R_PPC_COPY:
|
| 8087 |
|
|
case R_PPC_GLOB_DAT:
|
| 8088 |
|
|
case R_PPC_JMP_SLOT:
|
| 8089 |
|
|
case R_PPC_RELATIVE:
|
| 8090 |
|
|
case R_PPC_IRELATIVE:
|
| 8091 |
|
|
case R_PPC_PLT32:
|
| 8092 |
|
|
case R_PPC_PLTREL32:
|
| 8093 |
|
|
case R_PPC_PLT16_LO:
|
| 8094 |
|
|
case R_PPC_PLT16_HI:
|
| 8095 |
|
|
case R_PPC_PLT16_HA:
|
| 8096 |
|
|
case R_PPC_ADDR30:
|
| 8097 |
|
|
case R_PPC_EMB_RELSEC16:
|
| 8098 |
|
|
case R_PPC_EMB_RELST_LO:
|
| 8099 |
|
|
case R_PPC_EMB_RELST_HI:
|
| 8100 |
|
|
case R_PPC_EMB_RELST_HA:
|
| 8101 |
|
|
case R_PPC_EMB_BIT_FLD:
|
| 8102 |
|
|
info->callbacks->einfo
|
| 8103 |
161 |
khays |
(_("%P: %B: relocation %s is not yet supported for symbol %s\n"),
|
| 8104 |
14 |
khays |
input_bfd,
|
| 8105 |
|
|
howto->name,
|
| 8106 |
|
|
sym_name);
|
| 8107 |
|
|
|
| 8108 |
|
|
bfd_set_error (bfd_error_invalid_operation);
|
| 8109 |
|
|
ret = FALSE;
|
| 8110 |
|
|
continue;
|
| 8111 |
|
|
}
|
| 8112 |
|
|
|
| 8113 |
|
|
/* Do any further special processing. */
|
| 8114 |
|
|
switch (r_type)
|
| 8115 |
|
|
{
|
| 8116 |
|
|
default:
|
| 8117 |
|
|
break;
|
| 8118 |
|
|
|
| 8119 |
|
|
case R_PPC_ADDR16_HA:
|
| 8120 |
|
|
case R_PPC_REL16_HA:
|
| 8121 |
|
|
case R_PPC_SECTOFF_HA:
|
| 8122 |
|
|
case R_PPC_TPREL16_HA:
|
| 8123 |
|
|
case R_PPC_DTPREL16_HA:
|
| 8124 |
|
|
case R_PPC_EMB_NADDR16_HA:
|
| 8125 |
|
|
case R_PPC_EMB_RELST_HA:
|
| 8126 |
|
|
/* It's just possible that this symbol is a weak symbol
|
| 8127 |
|
|
that's not actually defined anywhere. In that case,
|
| 8128 |
|
|
'sec' would be NULL, and we should leave the symbol
|
| 8129 |
|
|
alone (it will be set to zero elsewhere in the link). */
|
| 8130 |
|
|
if (sec == NULL)
|
| 8131 |
|
|
break;
|
| 8132 |
|
|
/* Fall thru */
|
| 8133 |
|
|
|
| 8134 |
|
|
case R_PPC_PLT16_HA:
|
| 8135 |
|
|
case R_PPC_GOT16_HA:
|
| 8136 |
|
|
case R_PPC_GOT_TLSGD16_HA:
|
| 8137 |
|
|
case R_PPC_GOT_TLSLD16_HA:
|
| 8138 |
|
|
case R_PPC_GOT_TPREL16_HA:
|
| 8139 |
|
|
case R_PPC_GOT_DTPREL16_HA:
|
| 8140 |
|
|
/* Add 0x10000 if sign bit in 0:15 is set.
|
| 8141 |
|
|
Bits 0:15 are not used. */
|
| 8142 |
|
|
addend += 0x8000;
|
| 8143 |
|
|
break;
|
| 8144 |
|
|
}
|
| 8145 |
|
|
|
| 8146 |
|
|
#ifdef DEBUG
|
| 8147 |
|
|
fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
|
| 8148 |
|
|
"offset = %ld, addend = %ld\n",
|
| 8149 |
|
|
howto->name,
|
| 8150 |
|
|
(int) r_type,
|
| 8151 |
|
|
sym_name,
|
| 8152 |
|
|
r_symndx,
|
| 8153 |
|
|
(long) rel->r_offset,
|
| 8154 |
|
|
(long) addend);
|
| 8155 |
|
|
#endif
|
| 8156 |
|
|
|
| 8157 |
|
|
if (unresolved_reloc
|
| 8158 |
|
|
&& !((input_section->flags & SEC_DEBUGGING) != 0
|
| 8159 |
163 |
khays |
&& h->def_dynamic)
|
| 8160 |
|
|
&& _bfd_elf_section_offset (output_bfd, info, input_section,
|
| 8161 |
|
|
rel->r_offset) != (bfd_vma) -1)
|
| 8162 |
14 |
khays |
{
|
| 8163 |
|
|
info->callbacks->einfo
|
| 8164 |
161 |
khays |
(_("%P: %H: unresolvable %s relocation against symbol `%s'\n"),
|
| 8165 |
14 |
khays |
input_bfd, input_section, rel->r_offset,
|
| 8166 |
|
|
howto->name,
|
| 8167 |
|
|
sym_name);
|
| 8168 |
|
|
ret = FALSE;
|
| 8169 |
|
|
}
|
| 8170 |
|
|
|
| 8171 |
|
|
r = _bfd_final_link_relocate (howto,
|
| 8172 |
|
|
input_bfd,
|
| 8173 |
|
|
input_section,
|
| 8174 |
|
|
contents,
|
| 8175 |
|
|
rel->r_offset,
|
| 8176 |
|
|
relocation,
|
| 8177 |
|
|
addend);
|
| 8178 |
|
|
|
| 8179 |
|
|
if (r != bfd_reloc_ok)
|
| 8180 |
|
|
{
|
| 8181 |
|
|
if (r == bfd_reloc_overflow)
|
| 8182 |
|
|
{
|
| 8183 |
|
|
if (warned)
|
| 8184 |
|
|
continue;
|
| 8185 |
|
|
if (h != NULL
|
| 8186 |
|
|
&& h->root.type == bfd_link_hash_undefweak
|
| 8187 |
|
|
&& howto->pc_relative)
|
| 8188 |
|
|
{
|
| 8189 |
|
|
/* Assume this is a call protected by other code that
|
| 8190 |
|
|
detect the symbol is undefined. If this is the case,
|
| 8191 |
|
|
we can safely ignore the overflow. If not, the
|
| 8192 |
|
|
program is hosed anyway, and a little warning isn't
|
| 8193 |
|
|
going to help. */
|
| 8194 |
|
|
|
| 8195 |
|
|
continue;
|
| 8196 |
|
|
}
|
| 8197 |
|
|
|
| 8198 |
|
|
if (! (*info->callbacks->reloc_overflow) (info,
|
| 8199 |
|
|
(h ? &h->root : NULL),
|
| 8200 |
|
|
sym_name,
|
| 8201 |
|
|
howto->name,
|
| 8202 |
|
|
rel->r_addend,
|
| 8203 |
|
|
input_bfd,
|
| 8204 |
|
|
input_section,
|
| 8205 |
|
|
rel->r_offset))
|
| 8206 |
|
|
return FALSE;
|
| 8207 |
|
|
}
|
| 8208 |
|
|
else
|
| 8209 |
|
|
{
|
| 8210 |
|
|
info->callbacks->einfo
|
| 8211 |
161 |
khays |
(_("%P: %H: %s reloc against `%s': error %d\n"),
|
| 8212 |
14 |
khays |
input_bfd, input_section, rel->r_offset,
|
| 8213 |
|
|
howto->name, sym_name, (int) r);
|
| 8214 |
|
|
ret = FALSE;
|
| 8215 |
|
|
}
|
| 8216 |
|
|
}
|
| 8217 |
|
|
}
|
| 8218 |
|
|
|
| 8219 |
|
|
#ifdef DEBUG
|
| 8220 |
|
|
fprintf (stderr, "\n");
|
| 8221 |
|
|
#endif
|
| 8222 |
|
|
|
| 8223 |
|
|
return ret;
|
| 8224 |
|
|
}
|
| 8225 |
|
|
|
| 8226 |
|
|
/* Finish up dynamic symbol handling. We set the contents of various
|
| 8227 |
|
|
dynamic sections here. */
|
| 8228 |
|
|
|
| 8229 |
|
|
static bfd_boolean
|
| 8230 |
|
|
ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
|
| 8231 |
|
|
struct bfd_link_info *info,
|
| 8232 |
|
|
struct elf_link_hash_entry *h,
|
| 8233 |
|
|
Elf_Internal_Sym *sym)
|
| 8234 |
|
|
{
|
| 8235 |
|
|
struct ppc_elf_link_hash_table *htab;
|
| 8236 |
|
|
struct plt_entry *ent;
|
| 8237 |
|
|
bfd_boolean doneone;
|
| 8238 |
|
|
|
| 8239 |
|
|
#ifdef DEBUG
|
| 8240 |
|
|
fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
|
| 8241 |
|
|
h->root.root.string);
|
| 8242 |
|
|
#endif
|
| 8243 |
|
|
|
| 8244 |
|
|
htab = ppc_elf_hash_table (info);
|
| 8245 |
|
|
BFD_ASSERT (htab->elf.dynobj != NULL);
|
| 8246 |
|
|
|
| 8247 |
|
|
doneone = FALSE;
|
| 8248 |
|
|
for (ent = h->plt.plist; ent != NULL; ent = ent->next)
|
| 8249 |
|
|
if (ent->plt.offset != (bfd_vma) -1)
|
| 8250 |
|
|
{
|
| 8251 |
|
|
if (!doneone)
|
| 8252 |
|
|
{
|
| 8253 |
|
|
Elf_Internal_Rela rela;
|
| 8254 |
|
|
bfd_byte *loc;
|
| 8255 |
|
|
bfd_vma reloc_index;
|
| 8256 |
|
|
|
| 8257 |
|
|
if (htab->plt_type == PLT_NEW
|
| 8258 |
|
|
|| !htab->elf.dynamic_sections_created
|
| 8259 |
|
|
|| h->dynindx == -1)
|
| 8260 |
|
|
reloc_index = ent->plt.offset / 4;
|
| 8261 |
|
|
else
|
| 8262 |
|
|
{
|
| 8263 |
|
|
reloc_index = ((ent->plt.offset - htab->plt_initial_entry_size)
|
| 8264 |
|
|
/ htab->plt_slot_size);
|
| 8265 |
|
|
if (reloc_index > PLT_NUM_SINGLE_ENTRIES
|
| 8266 |
|
|
&& htab->plt_type == PLT_OLD)
|
| 8267 |
|
|
reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
|
| 8268 |
|
|
}
|
| 8269 |
|
|
|
| 8270 |
|
|
/* This symbol has an entry in the procedure linkage table.
|
| 8271 |
|
|
Set it up. */
|
| 8272 |
|
|
if (htab->plt_type == PLT_VXWORKS
|
| 8273 |
|
|
&& htab->elf.dynamic_sections_created
|
| 8274 |
|
|
&& h->dynindx != -1)
|
| 8275 |
|
|
{
|
| 8276 |
|
|
bfd_vma got_offset;
|
| 8277 |
|
|
const bfd_vma *plt_entry;
|
| 8278 |
|
|
|
| 8279 |
|
|
/* The first three entries in .got.plt are reserved. */
|
| 8280 |
|
|
got_offset = (reloc_index + 3) * 4;
|
| 8281 |
|
|
|
| 8282 |
|
|
/* Use the right PLT. */
|
| 8283 |
|
|
plt_entry = info->shared ? ppc_elf_vxworks_pic_plt_entry
|
| 8284 |
|
|
: ppc_elf_vxworks_plt_entry;
|
| 8285 |
|
|
|
| 8286 |
|
|
/* Fill in the .plt on VxWorks. */
|
| 8287 |
|
|
if (info->shared)
|
| 8288 |
|
|
{
|
| 8289 |
|
|
bfd_put_32 (output_bfd,
|
| 8290 |
|
|
plt_entry[0] | PPC_HA (got_offset),
|
| 8291 |
|
|
htab->plt->contents + ent->plt.offset + 0);
|
| 8292 |
|
|
bfd_put_32 (output_bfd,
|
| 8293 |
|
|
plt_entry[1] | PPC_LO (got_offset),
|
| 8294 |
|
|
htab->plt->contents + ent->plt.offset + 4);
|
| 8295 |
|
|
}
|
| 8296 |
|
|
else
|
| 8297 |
|
|
{
|
| 8298 |
|
|
bfd_vma got_loc = got_offset + SYM_VAL (htab->elf.hgot);
|
| 8299 |
|
|
|
| 8300 |
|
|
bfd_put_32 (output_bfd,
|
| 8301 |
|
|
plt_entry[0] | PPC_HA (got_loc),
|
| 8302 |
|
|
htab->plt->contents + ent->plt.offset + 0);
|
| 8303 |
|
|
bfd_put_32 (output_bfd,
|
| 8304 |
|
|
plt_entry[1] | PPC_LO (got_loc),
|
| 8305 |
|
|
htab->plt->contents + ent->plt.offset + 4);
|
| 8306 |
|
|
}
|
| 8307 |
|
|
|
| 8308 |
|
|
bfd_put_32 (output_bfd, plt_entry[2],
|
| 8309 |
|
|
htab->plt->contents + ent->plt.offset + 8);
|
| 8310 |
|
|
bfd_put_32 (output_bfd, plt_entry[3],
|
| 8311 |
|
|
htab->plt->contents + ent->plt.offset + 12);
|
| 8312 |
|
|
|
| 8313 |
|
|
/* This instruction is an immediate load. The value loaded is
|
| 8314 |
|
|
the byte offset of the R_PPC_JMP_SLOT relocation from the
|
| 8315 |
|
|
start of the .rela.plt section. The value is stored in the
|
| 8316 |
|
|
low-order 16 bits of the load instruction. */
|
| 8317 |
|
|
/* NOTE: It appears that this is now an index rather than a
|
| 8318 |
|
|
prescaled offset. */
|
| 8319 |
|
|
bfd_put_32 (output_bfd,
|
| 8320 |
|
|
plt_entry[4] | reloc_index,
|
| 8321 |
|
|
htab->plt->contents + ent->plt.offset + 16);
|
| 8322 |
|
|
/* This instruction is a PC-relative branch whose target is
|
| 8323 |
|
|
the start of the PLT section. The address of this branch
|
| 8324 |
|
|
instruction is 20 bytes beyond the start of this PLT entry.
|
| 8325 |
|
|
The address is encoded in bits 6-29, inclusive. The value
|
| 8326 |
|
|
stored is right-shifted by two bits, permitting a 26-bit
|
| 8327 |
|
|
offset. */
|
| 8328 |
|
|
bfd_put_32 (output_bfd,
|
| 8329 |
|
|
(plt_entry[5]
|
| 8330 |
|
|
| (-(ent->plt.offset + 20) & 0x03fffffc)),
|
| 8331 |
|
|
htab->plt->contents + ent->plt.offset + 20);
|
| 8332 |
|
|
bfd_put_32 (output_bfd, plt_entry[6],
|
| 8333 |
|
|
htab->plt->contents + ent->plt.offset + 24);
|
| 8334 |
|
|
bfd_put_32 (output_bfd, plt_entry[7],
|
| 8335 |
|
|
htab->plt->contents + ent->plt.offset + 28);
|
| 8336 |
|
|
|
| 8337 |
|
|
/* Fill in the GOT entry corresponding to this PLT slot with
|
| 8338 |
|
|
the address immediately after the the "bctr" instruction
|
| 8339 |
|
|
in this PLT entry. */
|
| 8340 |
|
|
bfd_put_32 (output_bfd, (htab->plt->output_section->vma
|
| 8341 |
|
|
+ htab->plt->output_offset
|
| 8342 |
|
|
+ ent->plt.offset + 16),
|
| 8343 |
|
|
htab->sgotplt->contents + got_offset);
|
| 8344 |
|
|
|
| 8345 |
|
|
if (!info->shared)
|
| 8346 |
|
|
{
|
| 8347 |
|
|
/* Fill in a couple of entries in .rela.plt.unloaded. */
|
| 8348 |
|
|
loc = htab->srelplt2->contents
|
| 8349 |
|
|
+ ((VXWORKS_PLTRESOLVE_RELOCS + reloc_index
|
| 8350 |
|
|
* VXWORKS_PLT_NON_JMP_SLOT_RELOCS)
|
| 8351 |
|
|
* sizeof (Elf32_External_Rela));
|
| 8352 |
|
|
|
| 8353 |
|
|
/* Provide the @ha relocation for the first instruction. */
|
| 8354 |
|
|
rela.r_offset = (htab->plt->output_section->vma
|
| 8355 |
|
|
+ htab->plt->output_offset
|
| 8356 |
|
|
+ ent->plt.offset + 2);
|
| 8357 |
|
|
rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
|
| 8358 |
|
|
R_PPC_ADDR16_HA);
|
| 8359 |
|
|
rela.r_addend = got_offset;
|
| 8360 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
|
| 8361 |
|
|
loc += sizeof (Elf32_External_Rela);
|
| 8362 |
|
|
|
| 8363 |
|
|
/* Provide the @l relocation for the second instruction. */
|
| 8364 |
|
|
rela.r_offset = (htab->plt->output_section->vma
|
| 8365 |
|
|
+ htab->plt->output_offset
|
| 8366 |
|
|
+ ent->plt.offset + 6);
|
| 8367 |
|
|
rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx,
|
| 8368 |
|
|
R_PPC_ADDR16_LO);
|
| 8369 |
|
|
rela.r_addend = got_offset;
|
| 8370 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
|
| 8371 |
|
|
loc += sizeof (Elf32_External_Rela);
|
| 8372 |
|
|
|
| 8373 |
|
|
/* Provide a relocation for the GOT entry corresponding to this
|
| 8374 |
|
|
PLT slot. Point it at the middle of the .plt entry. */
|
| 8375 |
|
|
rela.r_offset = (htab->sgotplt->output_section->vma
|
| 8376 |
|
|
+ htab->sgotplt->output_offset
|
| 8377 |
|
|
+ got_offset);
|
| 8378 |
|
|
rela.r_info = ELF32_R_INFO (htab->elf.hplt->indx,
|
| 8379 |
|
|
R_PPC_ADDR32);
|
| 8380 |
|
|
rela.r_addend = ent->plt.offset + 16;
|
| 8381 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
|
| 8382 |
|
|
}
|
| 8383 |
|
|
|
| 8384 |
|
|
/* VxWorks uses non-standard semantics for R_PPC_JMP_SLOT.
|
| 8385 |
|
|
In particular, the offset for the relocation is not the
|
| 8386 |
|
|
address of the PLT entry for this function, as specified
|
| 8387 |
|
|
by the ABI. Instead, the offset is set to the address of
|
| 8388 |
|
|
the GOT slot for this function. See EABI 4.4.4.1. */
|
| 8389 |
|
|
rela.r_offset = (htab->sgotplt->output_section->vma
|
| 8390 |
|
|
+ htab->sgotplt->output_offset
|
| 8391 |
|
|
+ got_offset);
|
| 8392 |
|
|
|
| 8393 |
|
|
}
|
| 8394 |
|
|
else
|
| 8395 |
|
|
{
|
| 8396 |
|
|
asection *splt = htab->plt;
|
| 8397 |
|
|
if (!htab->elf.dynamic_sections_created
|
| 8398 |
|
|
|| h->dynindx == -1)
|
| 8399 |
|
|
splt = htab->iplt;
|
| 8400 |
|
|
|
| 8401 |
|
|
rela.r_offset = (splt->output_section->vma
|
| 8402 |
|
|
+ splt->output_offset
|
| 8403 |
|
|
+ ent->plt.offset);
|
| 8404 |
|
|
if (htab->plt_type == PLT_OLD
|
| 8405 |
|
|
|| !htab->elf.dynamic_sections_created
|
| 8406 |
|
|
|| h->dynindx == -1)
|
| 8407 |
|
|
{
|
| 8408 |
|
|
/* We don't need to fill in the .plt. The ppc dynamic
|
| 8409 |
|
|
linker will fill it in. */
|
| 8410 |
|
|
}
|
| 8411 |
|
|
else
|
| 8412 |
|
|
{
|
| 8413 |
|
|
bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
|
| 8414 |
|
|
+ htab->glink->output_section->vma
|
| 8415 |
|
|
+ htab->glink->output_offset);
|
| 8416 |
|
|
bfd_put_32 (output_bfd, val,
|
| 8417 |
|
|
splt->contents + ent->plt.offset);
|
| 8418 |
|
|
}
|
| 8419 |
|
|
}
|
| 8420 |
|
|
|
| 8421 |
|
|
/* Fill in the entry in the .rela.plt section. */
|
| 8422 |
|
|
rela.r_addend = 0;
|
| 8423 |
|
|
if (!htab->elf.dynamic_sections_created
|
| 8424 |
|
|
|| h->dynindx == -1)
|
| 8425 |
|
|
{
|
| 8426 |
|
|
BFD_ASSERT (h->type == STT_GNU_IFUNC
|
| 8427 |
|
|
&& h->def_regular
|
| 8428 |
|
|
&& (h->root.type == bfd_link_hash_defined
|
| 8429 |
|
|
|| h->root.type == bfd_link_hash_defweak));
|
| 8430 |
|
|
rela.r_info = ELF32_R_INFO (0, R_PPC_IRELATIVE);
|
| 8431 |
|
|
rela.r_addend = SYM_VAL (h);
|
| 8432 |
|
|
}
|
| 8433 |
|
|
else
|
| 8434 |
|
|
rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
|
| 8435 |
|
|
|
| 8436 |
|
|
if (!htab->elf.dynamic_sections_created
|
| 8437 |
|
|
|| h->dynindx == -1)
|
| 8438 |
|
|
loc = (htab->reliplt->contents
|
| 8439 |
|
|
+ (htab->reliplt->reloc_count++
|
| 8440 |
|
|
* sizeof (Elf32_External_Rela)));
|
| 8441 |
|
|
else
|
| 8442 |
|
|
loc = (htab->relplt->contents
|
| 8443 |
|
|
+ reloc_index * sizeof (Elf32_External_Rela));
|
| 8444 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
|
| 8445 |
|
|
|
| 8446 |
|
|
if (!h->def_regular)
|
| 8447 |
|
|
{
|
| 8448 |
|
|
/* Mark the symbol as undefined, rather than as
|
| 8449 |
|
|
defined in the .plt section. Leave the value if
|
| 8450 |
|
|
there were any relocations where pointer equality
|
| 8451 |
|
|
matters (this is a clue for the dynamic linker, to
|
| 8452 |
|
|
make function pointer comparisons work between an
|
| 8453 |
|
|
application and shared library), otherwise set it
|
| 8454 |
|
|
to zero. */
|
| 8455 |
|
|
sym->st_shndx = SHN_UNDEF;
|
| 8456 |
|
|
if (!h->pointer_equality_needed)
|
| 8457 |
|
|
sym->st_value = 0;
|
| 8458 |
|
|
else if (!h->ref_regular_nonweak)
|
| 8459 |
|
|
{
|
| 8460 |
|
|
/* This breaks function pointer comparisons, but
|
| 8461 |
|
|
that is better than breaking tests for a NULL
|
| 8462 |
|
|
function pointer. */
|
| 8463 |
|
|
sym->st_value = 0;
|
| 8464 |
|
|
}
|
| 8465 |
|
|
}
|
| 8466 |
|
|
else if (h->type == STT_GNU_IFUNC
|
| 8467 |
|
|
&& !info->shared)
|
| 8468 |
|
|
{
|
| 8469 |
|
|
/* Set the value of ifunc symbols in a non-pie
|
| 8470 |
|
|
executable to the glink entry. This is to avoid
|
| 8471 |
|
|
text relocations. We can't do this for ifunc in
|
| 8472 |
|
|
allocate_dynrelocs, as we do for normal dynamic
|
| 8473 |
|
|
function symbols with plt entries, because we need
|
| 8474 |
|
|
to keep the original value around for the ifunc
|
| 8475 |
|
|
relocation. */
|
| 8476 |
|
|
sym->st_shndx = (_bfd_elf_section_from_bfd_section
|
| 8477 |
|
|
(output_bfd, htab->glink->output_section));
|
| 8478 |
|
|
sym->st_value = (ent->glink_offset
|
| 8479 |
|
|
+ htab->glink->output_offset
|
| 8480 |
|
|
+ htab->glink->output_section->vma);
|
| 8481 |
|
|
}
|
| 8482 |
|
|
doneone = TRUE;
|
| 8483 |
|
|
}
|
| 8484 |
|
|
|
| 8485 |
|
|
if (htab->plt_type == PLT_NEW
|
| 8486 |
|
|
|| !htab->elf.dynamic_sections_created
|
| 8487 |
|
|
|| h->dynindx == -1)
|
| 8488 |
|
|
{
|
| 8489 |
|
|
unsigned char *p;
|
| 8490 |
|
|
asection *splt = htab->plt;
|
| 8491 |
|
|
if (!htab->elf.dynamic_sections_created
|
| 8492 |
|
|
|| h->dynindx == -1)
|
| 8493 |
|
|
splt = htab->iplt;
|
| 8494 |
|
|
|
| 8495 |
|
|
p = (unsigned char *) htab->glink->contents + ent->glink_offset;
|
| 8496 |
|
|
|
| 8497 |
|
|
if (h == htab->tls_get_addr && !htab->no_tls_get_addr_opt)
|
| 8498 |
|
|
{
|
| 8499 |
|
|
bfd_put_32 (output_bfd, LWZ_11_3, p);
|
| 8500 |
|
|
p += 4;
|
| 8501 |
|
|
bfd_put_32 (output_bfd, LWZ_12_3 + 4, p);
|
| 8502 |
|
|
p += 4;
|
| 8503 |
|
|
bfd_put_32 (output_bfd, MR_0_3, p);
|
| 8504 |
|
|
p += 4;
|
| 8505 |
|
|
bfd_put_32 (output_bfd, CMPWI_11_0, p);
|
| 8506 |
|
|
p += 4;
|
| 8507 |
|
|
bfd_put_32 (output_bfd, ADD_3_12_2, p);
|
| 8508 |
|
|
p += 4;
|
| 8509 |
|
|
bfd_put_32 (output_bfd, BEQLR, p);
|
| 8510 |
|
|
p += 4;
|
| 8511 |
|
|
bfd_put_32 (output_bfd, MR_3_0, p);
|
| 8512 |
|
|
p += 4;
|
| 8513 |
|
|
bfd_put_32 (output_bfd, NOP, p);
|
| 8514 |
|
|
p += 4;
|
| 8515 |
|
|
}
|
| 8516 |
|
|
|
| 8517 |
|
|
write_glink_stub (ent, splt, p, info);
|
| 8518 |
|
|
|
| 8519 |
|
|
if (!info->shared)
|
| 8520 |
|
|
/* We only need one non-PIC glink stub. */
|
| 8521 |
|
|
break;
|
| 8522 |
|
|
}
|
| 8523 |
|
|
else
|
| 8524 |
|
|
break;
|
| 8525 |
|
|
}
|
| 8526 |
|
|
|
| 8527 |
|
|
if (h->needs_copy)
|
| 8528 |
|
|
{
|
| 8529 |
|
|
asection *s;
|
| 8530 |
|
|
Elf_Internal_Rela rela;
|
| 8531 |
|
|
bfd_byte *loc;
|
| 8532 |
|
|
|
| 8533 |
|
|
/* This symbols needs a copy reloc. Set it up. */
|
| 8534 |
|
|
|
| 8535 |
|
|
#ifdef DEBUG
|
| 8536 |
|
|
fprintf (stderr, ", copy");
|
| 8537 |
|
|
#endif
|
| 8538 |
|
|
|
| 8539 |
|
|
BFD_ASSERT (h->dynindx != -1);
|
| 8540 |
|
|
|
| 8541 |
|
|
if (ppc_elf_hash_entry (h)->has_sda_refs)
|
| 8542 |
|
|
s = htab->relsbss;
|
| 8543 |
|
|
else
|
| 8544 |
|
|
s = htab->relbss;
|
| 8545 |
|
|
BFD_ASSERT (s != NULL);
|
| 8546 |
|
|
|
| 8547 |
|
|
rela.r_offset = SYM_VAL (h);
|
| 8548 |
|
|
rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
|
| 8549 |
|
|
rela.r_addend = 0;
|
| 8550 |
|
|
loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
|
| 8551 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
|
| 8552 |
|
|
}
|
| 8553 |
|
|
|
| 8554 |
|
|
#ifdef DEBUG
|
| 8555 |
|
|
fprintf (stderr, "\n");
|
| 8556 |
|
|
#endif
|
| 8557 |
|
|
|
| 8558 |
|
|
/* Mark some specially defined symbols as absolute. */
|
| 8559 |
|
|
if (strcmp (h->root.root.string, "_DYNAMIC") == 0
|
| 8560 |
|
|
|| (!htab->is_vxworks
|
| 8561 |
|
|
&& (h == htab->elf.hgot
|
| 8562 |
|
|
|| strcmp (h->root.root.string,
|
| 8563 |
|
|
"_PROCEDURE_LINKAGE_TABLE_") == 0)))
|
| 8564 |
|
|
sym->st_shndx = SHN_ABS;
|
| 8565 |
|
|
|
| 8566 |
|
|
return TRUE;
|
| 8567 |
|
|
}
|
| 8568 |
|
|
|
| 8569 |
|
|
static enum elf_reloc_type_class
|
| 8570 |
|
|
ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
|
| 8571 |
|
|
{
|
| 8572 |
|
|
switch (ELF32_R_TYPE (rela->r_info))
|
| 8573 |
|
|
{
|
| 8574 |
|
|
case R_PPC_RELATIVE:
|
| 8575 |
|
|
return reloc_class_relative;
|
| 8576 |
|
|
case R_PPC_REL24:
|
| 8577 |
|
|
case R_PPC_ADDR24:
|
| 8578 |
|
|
case R_PPC_JMP_SLOT:
|
| 8579 |
|
|
return reloc_class_plt;
|
| 8580 |
|
|
case R_PPC_COPY:
|
| 8581 |
|
|
return reloc_class_copy;
|
| 8582 |
|
|
default:
|
| 8583 |
|
|
return reloc_class_normal;
|
| 8584 |
|
|
}
|
| 8585 |
|
|
}
|
| 8586 |
|
|
|
| 8587 |
|
|
/* Finish up the dynamic sections. */
|
| 8588 |
|
|
|
| 8589 |
|
|
static bfd_boolean
|
| 8590 |
|
|
ppc_elf_finish_dynamic_sections (bfd *output_bfd,
|
| 8591 |
|
|
struct bfd_link_info *info)
|
| 8592 |
|
|
{
|
| 8593 |
|
|
asection *sdyn;
|
| 8594 |
|
|
asection *splt;
|
| 8595 |
|
|
struct ppc_elf_link_hash_table *htab;
|
| 8596 |
|
|
bfd_vma got;
|
| 8597 |
|
|
bfd *dynobj;
|
| 8598 |
|
|
bfd_boolean ret = TRUE;
|
| 8599 |
|
|
|
| 8600 |
|
|
#ifdef DEBUG
|
| 8601 |
|
|
fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
|
| 8602 |
|
|
#endif
|
| 8603 |
|
|
|
| 8604 |
|
|
htab = ppc_elf_hash_table (info);
|
| 8605 |
|
|
dynobj = elf_hash_table (info)->dynobj;
|
| 8606 |
|
|
sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
|
| 8607 |
|
|
if (htab->is_vxworks)
|
| 8608 |
|
|
splt = bfd_get_section_by_name (dynobj, ".plt");
|
| 8609 |
|
|
else
|
| 8610 |
|
|
splt = NULL;
|
| 8611 |
|
|
|
| 8612 |
|
|
got = 0;
|
| 8613 |
|
|
if (htab->elf.hgot != NULL)
|
| 8614 |
|
|
got = SYM_VAL (htab->elf.hgot);
|
| 8615 |
|
|
|
| 8616 |
|
|
if (htab->elf.dynamic_sections_created)
|
| 8617 |
|
|
{
|
| 8618 |
|
|
Elf32_External_Dyn *dyncon, *dynconend;
|
| 8619 |
|
|
|
| 8620 |
|
|
BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
|
| 8621 |
|
|
|
| 8622 |
|
|
dyncon = (Elf32_External_Dyn *) sdyn->contents;
|
| 8623 |
|
|
dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
|
| 8624 |
|
|
for (; dyncon < dynconend; dyncon++)
|
| 8625 |
|
|
{
|
| 8626 |
|
|
Elf_Internal_Dyn dyn;
|
| 8627 |
|
|
asection *s;
|
| 8628 |
|
|
|
| 8629 |
|
|
bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
|
| 8630 |
|
|
|
| 8631 |
|
|
switch (dyn.d_tag)
|
| 8632 |
|
|
{
|
| 8633 |
|
|
case DT_PLTGOT:
|
| 8634 |
|
|
if (htab->is_vxworks)
|
| 8635 |
|
|
s = htab->sgotplt;
|
| 8636 |
|
|
else
|
| 8637 |
|
|
s = htab->plt;
|
| 8638 |
|
|
dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
|
| 8639 |
|
|
break;
|
| 8640 |
|
|
|
| 8641 |
|
|
case DT_PLTRELSZ:
|
| 8642 |
|
|
dyn.d_un.d_val = htab->relplt->size;
|
| 8643 |
|
|
break;
|
| 8644 |
|
|
|
| 8645 |
|
|
case DT_JMPREL:
|
| 8646 |
|
|
s = htab->relplt;
|
| 8647 |
|
|
dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
|
| 8648 |
|
|
break;
|
| 8649 |
|
|
|
| 8650 |
|
|
case DT_PPC_GOT:
|
| 8651 |
|
|
dyn.d_un.d_ptr = got;
|
| 8652 |
|
|
break;
|
| 8653 |
|
|
|
| 8654 |
|
|
case DT_RELASZ:
|
| 8655 |
|
|
if (htab->is_vxworks)
|
| 8656 |
|
|
{
|
| 8657 |
|
|
if (htab->relplt)
|
| 8658 |
|
|
dyn.d_un.d_ptr -= htab->relplt->size;
|
| 8659 |
|
|
break;
|
| 8660 |
|
|
}
|
| 8661 |
|
|
continue;
|
| 8662 |
|
|
|
| 8663 |
|
|
default:
|
| 8664 |
|
|
if (htab->is_vxworks
|
| 8665 |
|
|
&& elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
|
| 8666 |
|
|
break;
|
| 8667 |
|
|
continue;
|
| 8668 |
|
|
}
|
| 8669 |
|
|
|
| 8670 |
|
|
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
| 8671 |
|
|
}
|
| 8672 |
|
|
}
|
| 8673 |
|
|
|
| 8674 |
|
|
if (htab->got != NULL)
|
| 8675 |
|
|
{
|
| 8676 |
|
|
if (htab->elf.hgot->root.u.def.section == htab->got
|
| 8677 |
|
|
|| htab->elf.hgot->root.u.def.section == htab->sgotplt)
|
| 8678 |
|
|
{
|
| 8679 |
|
|
unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
|
| 8680 |
|
|
|
| 8681 |
|
|
p += htab->elf.hgot->root.u.def.value;
|
| 8682 |
|
|
if (htab->plt_type == PLT_OLD)
|
| 8683 |
|
|
{
|
| 8684 |
|
|
/* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
|
| 8685 |
|
|
so that a function can easily find the address of
|
| 8686 |
|
|
_GLOBAL_OFFSET_TABLE_. */
|
| 8687 |
|
|
BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
|
| 8688 |
|
|
< htab->elf.hgot->root.u.def.section->size);
|
| 8689 |
|
|
bfd_put_32 (output_bfd, 0x4e800021, p - 4);
|
| 8690 |
|
|
}
|
| 8691 |
|
|
|
| 8692 |
|
|
if (sdyn != NULL)
|
| 8693 |
|
|
{
|
| 8694 |
|
|
bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
|
| 8695 |
|
|
BFD_ASSERT (htab->elf.hgot->root.u.def.value
|
| 8696 |
|
|
< htab->elf.hgot->root.u.def.section->size);
|
| 8697 |
|
|
bfd_put_32 (output_bfd, val, p);
|
| 8698 |
|
|
}
|
| 8699 |
|
|
}
|
| 8700 |
|
|
else
|
| 8701 |
|
|
{
|
| 8702 |
161 |
khays |
info->callbacks->einfo (_("%P: %s not defined in linker created %s\n"),
|
| 8703 |
14 |
khays |
htab->elf.hgot->root.root.string,
|
| 8704 |
|
|
(htab->sgotplt != NULL
|
| 8705 |
|
|
? htab->sgotplt->name : htab->got->name));
|
| 8706 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 8707 |
|
|
ret = FALSE;
|
| 8708 |
|
|
}
|
| 8709 |
|
|
|
| 8710 |
|
|
elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
|
| 8711 |
|
|
}
|
| 8712 |
|
|
|
| 8713 |
|
|
/* Fill in the first entry in the VxWorks procedure linkage table. */
|
| 8714 |
|
|
if (splt && splt->size > 0)
|
| 8715 |
|
|
{
|
| 8716 |
|
|
/* Use the right PLT. */
|
| 8717 |
|
|
const bfd_vma *plt_entry = (info->shared
|
| 8718 |
|
|
? ppc_elf_vxworks_pic_plt0_entry
|
| 8719 |
|
|
: ppc_elf_vxworks_plt0_entry);
|
| 8720 |
|
|
|
| 8721 |
|
|
if (!info->shared)
|
| 8722 |
|
|
{
|
| 8723 |
|
|
bfd_vma got_value = SYM_VAL (htab->elf.hgot);
|
| 8724 |
|
|
|
| 8725 |
|
|
bfd_put_32 (output_bfd, plt_entry[0] | PPC_HA (got_value),
|
| 8726 |
|
|
splt->contents + 0);
|
| 8727 |
|
|
bfd_put_32 (output_bfd, plt_entry[1] | PPC_LO (got_value),
|
| 8728 |
|
|
splt->contents + 4);
|
| 8729 |
|
|
}
|
| 8730 |
|
|
else
|
| 8731 |
|
|
{
|
| 8732 |
|
|
bfd_put_32 (output_bfd, plt_entry[0], splt->contents + 0);
|
| 8733 |
|
|
bfd_put_32 (output_bfd, plt_entry[1], splt->contents + 4);
|
| 8734 |
|
|
}
|
| 8735 |
|
|
bfd_put_32 (output_bfd, plt_entry[2], splt->contents + 8);
|
| 8736 |
|
|
bfd_put_32 (output_bfd, plt_entry[3], splt->contents + 12);
|
| 8737 |
|
|
bfd_put_32 (output_bfd, plt_entry[4], splt->contents + 16);
|
| 8738 |
|
|
bfd_put_32 (output_bfd, plt_entry[5], splt->contents + 20);
|
| 8739 |
|
|
bfd_put_32 (output_bfd, plt_entry[6], splt->contents + 24);
|
| 8740 |
|
|
bfd_put_32 (output_bfd, plt_entry[7], splt->contents + 28);
|
| 8741 |
|
|
|
| 8742 |
|
|
if (! info->shared)
|
| 8743 |
|
|
{
|
| 8744 |
|
|
Elf_Internal_Rela rela;
|
| 8745 |
|
|
bfd_byte *loc;
|
| 8746 |
|
|
|
| 8747 |
|
|
loc = htab->srelplt2->contents;
|
| 8748 |
|
|
|
| 8749 |
|
|
/* Output the @ha relocation for the first instruction. */
|
| 8750 |
|
|
rela.r_offset = (htab->plt->output_section->vma
|
| 8751 |
|
|
+ htab->plt->output_offset
|
| 8752 |
|
|
+ 2);
|
| 8753 |
|
|
rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
|
| 8754 |
|
|
rela.r_addend = 0;
|
| 8755 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
|
| 8756 |
|
|
loc += sizeof (Elf32_External_Rela);
|
| 8757 |
|
|
|
| 8758 |
|
|
/* Output the @l relocation for the second instruction. */
|
| 8759 |
|
|
rela.r_offset = (htab->plt->output_section->vma
|
| 8760 |
|
|
+ htab->plt->output_offset
|
| 8761 |
|
|
+ 6);
|
| 8762 |
|
|
rela.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
|
| 8763 |
|
|
rela.r_addend = 0;
|
| 8764 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
|
| 8765 |
|
|
loc += sizeof (Elf32_External_Rela);
|
| 8766 |
|
|
|
| 8767 |
|
|
/* Fix up the remaining relocations. They may have the wrong
|
| 8768 |
|
|
symbol index for _G_O_T_ or _P_L_T_ depending on the order
|
| 8769 |
|
|
in which symbols were output. */
|
| 8770 |
|
|
while (loc < htab->srelplt2->contents + htab->srelplt2->size)
|
| 8771 |
|
|
{
|
| 8772 |
|
|
Elf_Internal_Rela rel;
|
| 8773 |
|
|
|
| 8774 |
|
|
bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
|
| 8775 |
|
|
rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_HA);
|
| 8776 |
|
|
bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
|
| 8777 |
|
|
loc += sizeof (Elf32_External_Rela);
|
| 8778 |
|
|
|
| 8779 |
|
|
bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
|
| 8780 |
|
|
rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_PPC_ADDR16_LO);
|
| 8781 |
|
|
bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
|
| 8782 |
|
|
loc += sizeof (Elf32_External_Rela);
|
| 8783 |
|
|
|
| 8784 |
|
|
bfd_elf32_swap_reloc_in (output_bfd, loc, &rel);
|
| 8785 |
|
|
rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_PPC_ADDR32);
|
| 8786 |
|
|
bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
|
| 8787 |
|
|
loc += sizeof (Elf32_External_Rela);
|
| 8788 |
|
|
}
|
| 8789 |
|
|
}
|
| 8790 |
|
|
}
|
| 8791 |
|
|
|
| 8792 |
|
|
if (htab->glink != NULL
|
| 8793 |
|
|
&& htab->glink->contents != NULL
|
| 8794 |
|
|
&& htab->elf.dynamic_sections_created)
|
| 8795 |
|
|
{
|
| 8796 |
|
|
unsigned char *p;
|
| 8797 |
|
|
unsigned char *endp;
|
| 8798 |
|
|
bfd_vma res0;
|
| 8799 |
|
|
unsigned int i;
|
| 8800 |
|
|
|
| 8801 |
|
|
/*
|
| 8802 |
|
|
* PIC glink code is the following:
|
| 8803 |
|
|
*
|
| 8804 |
|
|
* # ith PLT code stub.
|
| 8805 |
|
|
* addis 11,30,(plt+(i-1)*4-got)@ha
|
| 8806 |
|
|
* lwz 11,(plt+(i-1)*4-got)@l(11)
|
| 8807 |
|
|
* mtctr 11
|
| 8808 |
|
|
* bctr
|
| 8809 |
|
|
*
|
| 8810 |
|
|
* # A table of branches, one for each plt entry.
|
| 8811 |
|
|
* # The idea is that the plt call stub loads ctr and r11 with these
|
| 8812 |
|
|
* # addresses, so (r11 - res_0) gives the plt index * 4.
|
| 8813 |
|
|
* res_0: b PLTresolve
|
| 8814 |
|
|
* res_1: b PLTresolve
|
| 8815 |
|
|
* .
|
| 8816 |
|
|
* # Some number of entries towards the end can be nops
|
| 8817 |
|
|
* res_n_m3: nop
|
| 8818 |
|
|
* res_n_m2: nop
|
| 8819 |
|
|
* res_n_m1:
|
| 8820 |
|
|
*
|
| 8821 |
|
|
* PLTresolve:
|
| 8822 |
|
|
* addis 11,11,(1f-res_0)@ha
|
| 8823 |
|
|
* mflr 0
|
| 8824 |
|
|
* bcl 20,31,1f
|
| 8825 |
|
|
* 1: addi 11,11,(1b-res_0)@l
|
| 8826 |
|
|
* mflr 12
|
| 8827 |
|
|
* mtlr 0
|
| 8828 |
|
|
* sub 11,11,12 # r11 = index * 4
|
| 8829 |
|
|
* addis 12,12,(got+4-1b)@ha
|
| 8830 |
|
|
* lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
|
| 8831 |
|
|
* lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
|
| 8832 |
|
|
* mtctr 0
|
| 8833 |
|
|
* add 0,11,11
|
| 8834 |
|
|
* add 11,0,11 # r11 = index * 12 = reloc offset.
|
| 8835 |
|
|
* bctr
|
| 8836 |
|
|
*/
|
| 8837 |
|
|
static const unsigned int pic_plt_resolve[] =
|
| 8838 |
|
|
{
|
| 8839 |
|
|
ADDIS_11_11,
|
| 8840 |
|
|
MFLR_0,
|
| 8841 |
|
|
BCL_20_31,
|
| 8842 |
|
|
ADDI_11_11,
|
| 8843 |
|
|
MFLR_12,
|
| 8844 |
|
|
MTLR_0,
|
| 8845 |
|
|
SUB_11_11_12,
|
| 8846 |
|
|
ADDIS_12_12,
|
| 8847 |
|
|
LWZ_0_12,
|
| 8848 |
|
|
LWZ_12_12,
|
| 8849 |
|
|
MTCTR_0,
|
| 8850 |
|
|
ADD_0_11_11,
|
| 8851 |
|
|
ADD_11_0_11,
|
| 8852 |
|
|
BCTR,
|
| 8853 |
|
|
NOP,
|
| 8854 |
|
|
NOP
|
| 8855 |
|
|
};
|
| 8856 |
|
|
|
| 8857 |
|
|
/*
|
| 8858 |
|
|
* Non-PIC glink code is a little simpler.
|
| 8859 |
|
|
*
|
| 8860 |
|
|
* # ith PLT code stub.
|
| 8861 |
|
|
* lis 11,(plt+(i-1)*4)@ha
|
| 8862 |
|
|
* lwz 11,(plt+(i-1)*4)@l(11)
|
| 8863 |
|
|
* mtctr 11
|
| 8864 |
|
|
* bctr
|
| 8865 |
|
|
*
|
| 8866 |
|
|
* The branch table is the same, then comes
|
| 8867 |
|
|
*
|
| 8868 |
|
|
* PLTresolve:
|
| 8869 |
|
|
* lis 12,(got+4)@ha
|
| 8870 |
|
|
* addis 11,11,(-res_0)@ha
|
| 8871 |
|
|
* lwz 0,(got+4)@l(12) # got[1] address of dl_runtime_resolve
|
| 8872 |
|
|
* addi 11,11,(-res_0)@l # r11 = index * 4
|
| 8873 |
|
|
* mtctr 0
|
| 8874 |
|
|
* add 0,11,11
|
| 8875 |
|
|
* lwz 12,(got+8)@l(12) # got[2] contains the map address
|
| 8876 |
|
|
* add 11,0,11 # r11 = index * 12 = reloc offset.
|
| 8877 |
|
|
* bctr
|
| 8878 |
|
|
*/
|
| 8879 |
|
|
static const unsigned int plt_resolve[] =
|
| 8880 |
|
|
{
|
| 8881 |
|
|
LIS_12,
|
| 8882 |
|
|
ADDIS_11_11,
|
| 8883 |
|
|
LWZ_0_12,
|
| 8884 |
|
|
ADDI_11_11,
|
| 8885 |
|
|
MTCTR_0,
|
| 8886 |
|
|
ADD_0_11_11,
|
| 8887 |
|
|
LWZ_12_12,
|
| 8888 |
|
|
ADD_11_0_11,
|
| 8889 |
|
|
BCTR,
|
| 8890 |
|
|
NOP,
|
| 8891 |
|
|
NOP,
|
| 8892 |
|
|
NOP,
|
| 8893 |
|
|
NOP,
|
| 8894 |
|
|
NOP,
|
| 8895 |
|
|
NOP,
|
| 8896 |
|
|
NOP
|
| 8897 |
|
|
};
|
| 8898 |
|
|
|
| 8899 |
|
|
if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
|
| 8900 |
|
|
abort ();
|
| 8901 |
|
|
if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
|
| 8902 |
|
|
abort ();
|
| 8903 |
|
|
|
| 8904 |
|
|
/* Build the branch table, one for each plt entry (less one),
|
| 8905 |
|
|
and perhaps some padding. */
|
| 8906 |
|
|
p = htab->glink->contents;
|
| 8907 |
|
|
p += htab->glink_pltresolve;
|
| 8908 |
|
|
endp = htab->glink->contents;
|
| 8909 |
|
|
endp += htab->glink->size - GLINK_PLTRESOLVE;
|
| 8910 |
|
|
while (p < endp - 8 * 4)
|
| 8911 |
|
|
{
|
| 8912 |
|
|
bfd_put_32 (output_bfd, B + endp - p, p);
|
| 8913 |
|
|
p += 4;
|
| 8914 |
|
|
}
|
| 8915 |
|
|
while (p < endp)
|
| 8916 |
|
|
{
|
| 8917 |
|
|
bfd_put_32 (output_bfd, NOP, p);
|
| 8918 |
|
|
p += 4;
|
| 8919 |
|
|
}
|
| 8920 |
|
|
|
| 8921 |
|
|
res0 = (htab->glink_pltresolve
|
| 8922 |
|
|
+ htab->glink->output_section->vma
|
| 8923 |
|
|
+ htab->glink->output_offset);
|
| 8924 |
|
|
|
| 8925 |
|
|
/* Last comes the PLTresolve stub. */
|
| 8926 |
|
|
if (info->shared)
|
| 8927 |
|
|
{
|
| 8928 |
|
|
bfd_vma bcl;
|
| 8929 |
|
|
|
| 8930 |
|
|
for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
|
| 8931 |
|
|
{
|
| 8932 |
|
|
bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
|
| 8933 |
|
|
p += 4;
|
| 8934 |
|
|
}
|
| 8935 |
|
|
p -= 4 * ARRAY_SIZE (pic_plt_resolve);
|
| 8936 |
|
|
|
| 8937 |
|
|
bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
|
| 8938 |
|
|
+ htab->glink->output_section->vma
|
| 8939 |
|
|
+ htab->glink->output_offset);
|
| 8940 |
|
|
|
| 8941 |
|
|
bfd_put_32 (output_bfd,
|
| 8942 |
|
|
ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
|
| 8943 |
|
|
bfd_put_32 (output_bfd,
|
| 8944 |
|
|
ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
|
| 8945 |
|
|
bfd_put_32 (output_bfd,
|
| 8946 |
|
|
ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
|
| 8947 |
|
|
if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
|
| 8948 |
|
|
{
|
| 8949 |
|
|
bfd_put_32 (output_bfd,
|
| 8950 |
|
|
LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
|
| 8951 |
|
|
bfd_put_32 (output_bfd,
|
| 8952 |
|
|
LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
|
| 8953 |
|
|
}
|
| 8954 |
|
|
else
|
| 8955 |
|
|
{
|
| 8956 |
|
|
bfd_put_32 (output_bfd,
|
| 8957 |
|
|
LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
|
| 8958 |
|
|
bfd_put_32 (output_bfd,
|
| 8959 |
|
|
LWZ_12_12 + 4, p + 9*4);
|
| 8960 |
|
|
}
|
| 8961 |
|
|
}
|
| 8962 |
|
|
else
|
| 8963 |
|
|
{
|
| 8964 |
|
|
for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
|
| 8965 |
|
|
{
|
| 8966 |
|
|
bfd_put_32 (output_bfd, plt_resolve[i], p);
|
| 8967 |
|
|
p += 4;
|
| 8968 |
|
|
}
|
| 8969 |
|
|
p -= 4 * ARRAY_SIZE (plt_resolve);
|
| 8970 |
|
|
|
| 8971 |
|
|
bfd_put_32 (output_bfd,
|
| 8972 |
|
|
LIS_12 + PPC_HA (got + 4), p + 0*4);
|
| 8973 |
|
|
bfd_put_32 (output_bfd,
|
| 8974 |
|
|
ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
|
| 8975 |
|
|
bfd_put_32 (output_bfd,
|
| 8976 |
|
|
ADDI_11_11 + PPC_LO (-res0), p + 3*4);
|
| 8977 |
|
|
if (PPC_HA (got + 4) == PPC_HA (got + 8))
|
| 8978 |
|
|
{
|
| 8979 |
|
|
bfd_put_32 (output_bfd,
|
| 8980 |
|
|
LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
|
| 8981 |
|
|
bfd_put_32 (output_bfd,
|
| 8982 |
|
|
LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
|
| 8983 |
|
|
}
|
| 8984 |
|
|
else
|
| 8985 |
|
|
{
|
| 8986 |
|
|
bfd_put_32 (output_bfd,
|
| 8987 |
|
|
LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
|
| 8988 |
|
|
bfd_put_32 (output_bfd,
|
| 8989 |
|
|
LWZ_12_12 + 4, p + 6*4);
|
| 8990 |
|
|
}
|
| 8991 |
|
|
}
|
| 8992 |
|
|
}
|
| 8993 |
|
|
|
| 8994 |
161 |
khays |
if (htab->glink_eh_frame != NULL
|
| 8995 |
|
|
&& htab->glink_eh_frame->contents != NULL)
|
| 8996 |
|
|
{
|
| 8997 |
|
|
unsigned char *p = htab->glink_eh_frame->contents;
|
| 8998 |
|
|
bfd_vma val;
|
| 8999 |
|
|
|
| 9000 |
|
|
memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
|
| 9001 |
|
|
/* CIE length (rewrite in case little-endian). */
|
| 9002 |
|
|
bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p);
|
| 9003 |
|
|
p += sizeof (glink_eh_frame_cie);
|
| 9004 |
|
|
/* FDE length. */
|
| 9005 |
|
|
val = htab->glink_eh_frame->size - 4 - sizeof (glink_eh_frame_cie);
|
| 9006 |
|
|
bfd_put_32 (htab->elf.dynobj, val, p);
|
| 9007 |
|
|
p += 4;
|
| 9008 |
|
|
/* CIE pointer. */
|
| 9009 |
|
|
val = p - htab->glink_eh_frame->contents;
|
| 9010 |
|
|
bfd_put_32 (htab->elf.dynobj, val, p);
|
| 9011 |
|
|
p += 4;
|
| 9012 |
|
|
/* Offset to .glink. */
|
| 9013 |
|
|
val = (htab->glink->output_section->vma
|
| 9014 |
|
|
+ htab->glink->output_offset);
|
| 9015 |
|
|
val -= (htab->glink_eh_frame->output_section->vma
|
| 9016 |
|
|
+ htab->glink_eh_frame->output_offset);
|
| 9017 |
|
|
val -= p - htab->glink_eh_frame->contents;
|
| 9018 |
|
|
bfd_put_32 (htab->elf.dynobj, val, p);
|
| 9019 |
|
|
p += 4;
|
| 9020 |
|
|
/* .glink size. */
|
| 9021 |
|
|
bfd_put_32 (htab->elf.dynobj, htab->glink->size, p);
|
| 9022 |
|
|
p += 4;
|
| 9023 |
|
|
/* Augmentation. */
|
| 9024 |
|
|
p += 1;
|
| 9025 |
|
|
|
| 9026 |
|
|
if (info->shared
|
| 9027 |
|
|
&& htab->elf.dynamic_sections_created)
|
| 9028 |
|
|
{
|
| 9029 |
|
|
bfd_vma adv = (htab->glink->size - GLINK_PLTRESOLVE + 8) >> 2;
|
| 9030 |
|
|
if (adv < 64)
|
| 9031 |
|
|
*p++ = DW_CFA_advance_loc + adv;
|
| 9032 |
|
|
else if (adv < 256)
|
| 9033 |
|
|
{
|
| 9034 |
|
|
*p++ = DW_CFA_advance_loc1;
|
| 9035 |
|
|
*p++ = adv;
|
| 9036 |
|
|
}
|
| 9037 |
|
|
else if (adv < 65536)
|
| 9038 |
|
|
{
|
| 9039 |
|
|
*p++ = DW_CFA_advance_loc2;
|
| 9040 |
|
|
bfd_put_16 (htab->elf.dynobj, adv, p);
|
| 9041 |
|
|
p += 2;
|
| 9042 |
|
|
}
|
| 9043 |
|
|
else
|
| 9044 |
|
|
{
|
| 9045 |
|
|
*p++ = DW_CFA_advance_loc4;
|
| 9046 |
|
|
bfd_put_32 (htab->elf.dynobj, adv, p);
|
| 9047 |
|
|
p += 4;
|
| 9048 |
|
|
}
|
| 9049 |
|
|
*p++ = DW_CFA_register;
|
| 9050 |
|
|
*p++ = 65;
|
| 9051 |
|
|
p++;
|
| 9052 |
|
|
*p++ = DW_CFA_advance_loc + 4;
|
| 9053 |
|
|
*p++ = DW_CFA_restore_extended;
|
| 9054 |
|
|
*p++ = 65;
|
| 9055 |
|
|
}
|
| 9056 |
|
|
BFD_ASSERT ((bfd_vma) ((p + 3 - htab->glink_eh_frame->contents) & -4)
|
| 9057 |
|
|
== htab->glink_eh_frame->size);
|
| 9058 |
|
|
|
| 9059 |
|
|
if (htab->glink_eh_frame->sec_info_type == ELF_INFO_TYPE_EH_FRAME
|
| 9060 |
|
|
&& !_bfd_elf_write_section_eh_frame (output_bfd, info,
|
| 9061 |
|
|
htab->glink_eh_frame,
|
| 9062 |
|
|
htab->glink_eh_frame->contents))
|
| 9063 |
|
|
return FALSE;
|
| 9064 |
|
|
}
|
| 9065 |
|
|
|
| 9066 |
14 |
khays |
return ret;
|
| 9067 |
|
|
}
|
| 9068 |
|
|
|
| 9069 |
|
|
#define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
|
| 9070 |
|
|
#define TARGET_LITTLE_NAME "elf32-powerpcle"
|
| 9071 |
|
|
#define TARGET_BIG_SYM bfd_elf32_powerpc_vec
|
| 9072 |
|
|
#define TARGET_BIG_NAME "elf32-powerpc"
|
| 9073 |
|
|
#define ELF_ARCH bfd_arch_powerpc
|
| 9074 |
|
|
#define ELF_TARGET_ID PPC32_ELF_DATA
|
| 9075 |
|
|
#define ELF_MACHINE_CODE EM_PPC
|
| 9076 |
|
|
#ifdef __QNXTARGET__
|
| 9077 |
|
|
#define ELF_MAXPAGESIZE 0x1000
|
| 9078 |
|
|
#else
|
| 9079 |
|
|
#define ELF_MAXPAGESIZE 0x10000
|
| 9080 |
|
|
#endif
|
| 9081 |
|
|
#define ELF_MINPAGESIZE 0x1000
|
| 9082 |
|
|
#define ELF_COMMONPAGESIZE 0x1000
|
| 9083 |
|
|
#define elf_info_to_howto ppc_elf_info_to_howto
|
| 9084 |
|
|
|
| 9085 |
|
|
#ifdef EM_CYGNUS_POWERPC
|
| 9086 |
|
|
#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
|
| 9087 |
|
|
#endif
|
| 9088 |
|
|
|
| 9089 |
|
|
#ifdef EM_PPC_OLD
|
| 9090 |
|
|
#define ELF_MACHINE_ALT2 EM_PPC_OLD
|
| 9091 |
|
|
#endif
|
| 9092 |
|
|
|
| 9093 |
|
|
#define elf_backend_plt_not_loaded 1
|
| 9094 |
|
|
#define elf_backend_can_gc_sections 1
|
| 9095 |
|
|
#define elf_backend_can_refcount 1
|
| 9096 |
|
|
#define elf_backend_rela_normal 1
|
| 9097 |
|
|
|
| 9098 |
|
|
#define bfd_elf32_mkobject ppc_elf_mkobject
|
| 9099 |
|
|
#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
|
| 9100 |
|
|
#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
|
| 9101 |
|
|
#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
|
| 9102 |
|
|
#define bfd_elf32_bfd_reloc_name_lookup ppc_elf_reloc_name_lookup
|
| 9103 |
|
|
#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
|
| 9104 |
|
|
#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
|
| 9105 |
|
|
#define bfd_elf32_get_synthetic_symtab ppc_elf_get_synthetic_symtab
|
| 9106 |
|
|
|
| 9107 |
|
|
#define elf_backend_object_p ppc_elf_object_p
|
| 9108 |
|
|
#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
|
| 9109 |
|
|
#define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
|
| 9110 |
|
|
#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
|
| 9111 |
|
|
#define elf_backend_relocate_section ppc_elf_relocate_section
|
| 9112 |
|
|
#define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
|
| 9113 |
|
|
#define elf_backend_check_relocs ppc_elf_check_relocs
|
| 9114 |
|
|
#define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
|
| 9115 |
|
|
#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
|
| 9116 |
|
|
#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
|
| 9117 |
|
|
#define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
|
| 9118 |
|
|
#define elf_backend_hash_symbol ppc_elf_hash_symbol
|
| 9119 |
|
|
#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
|
| 9120 |
|
|
#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
|
| 9121 |
|
|
#define elf_backend_fake_sections ppc_elf_fake_sections
|
| 9122 |
|
|
#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
|
| 9123 |
|
|
#define elf_backend_grok_prstatus ppc_elf_grok_prstatus
|
| 9124 |
|
|
#define elf_backend_grok_psinfo ppc_elf_grok_psinfo
|
| 9125 |
|
|
#define elf_backend_write_core_note ppc_elf_write_core_note
|
| 9126 |
|
|
#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
|
| 9127 |
|
|
#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
|
| 9128 |
|
|
#define elf_backend_final_write_processing ppc_elf_final_write_processing
|
| 9129 |
|
|
#define elf_backend_write_section ppc_elf_write_section
|
| 9130 |
|
|
#define elf_backend_get_sec_type_attr ppc_elf_get_sec_type_attr
|
| 9131 |
|
|
#define elf_backend_plt_sym_val ppc_elf_plt_sym_val
|
| 9132 |
|
|
#define elf_backend_action_discarded ppc_elf_action_discarded
|
| 9133 |
|
|
#define elf_backend_init_index_section _bfd_elf_init_1_index_section
|
| 9134 |
|
|
#define elf_backend_post_process_headers _bfd_elf_set_osabi
|
| 9135 |
|
|
|
| 9136 |
|
|
#include "elf32-target.h"
|
| 9137 |
|
|
|
| 9138 |
166 |
khays |
/* FreeBSD Target */
|
| 9139 |
|
|
|
| 9140 |
|
|
#undef TARGET_LITTLE_SYM
|
| 9141 |
|
|
#undef TARGET_LITTLE_NAME
|
| 9142 |
|
|
|
| 9143 |
|
|
#undef TARGET_BIG_SYM
|
| 9144 |
|
|
#define TARGET_BIG_SYM bfd_elf32_powerpc_freebsd_vec
|
| 9145 |
|
|
#undef TARGET_BIG_NAME
|
| 9146 |
|
|
#define TARGET_BIG_NAME "elf32-powerpc-freebsd"
|
| 9147 |
|
|
|
| 9148 |
|
|
#undef ELF_OSABI
|
| 9149 |
|
|
#define ELF_OSABI ELFOSABI_FREEBSD
|
| 9150 |
|
|
|
| 9151 |
|
|
#undef elf32_bed
|
| 9152 |
|
|
#define elf32_bed elf32_powerpc_fbsd_bed
|
| 9153 |
|
|
|
| 9154 |
|
|
#include "elf32-target.h"
|
| 9155 |
|
|
|
| 9156 |
14 |
khays |
/* VxWorks Target */
|
| 9157 |
|
|
|
| 9158 |
|
|
#undef TARGET_LITTLE_SYM
|
| 9159 |
|
|
#undef TARGET_LITTLE_NAME
|
| 9160 |
|
|
|
| 9161 |
|
|
#undef TARGET_BIG_SYM
|
| 9162 |
|
|
#define TARGET_BIG_SYM bfd_elf32_powerpc_vxworks_vec
|
| 9163 |
|
|
#undef TARGET_BIG_NAME
|
| 9164 |
|
|
#define TARGET_BIG_NAME "elf32-powerpc-vxworks"
|
| 9165 |
|
|
|
| 9166 |
166 |
khays |
#undef ELF_OSABI
|
| 9167 |
|
|
|
| 9168 |
14 |
khays |
/* VxWorks uses the elf default section flags for .plt. */
|
| 9169 |
|
|
static const struct bfd_elf_special_section *
|
| 9170 |
|
|
ppc_elf_vxworks_get_sec_type_attr (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
|
| 9171 |
|
|
{
|
| 9172 |
|
|
if (sec->name == NULL)
|
| 9173 |
|
|
return NULL;
|
| 9174 |
|
|
|
| 9175 |
|
|
if (strcmp (sec->name, ".plt") == 0)
|
| 9176 |
|
|
return _bfd_elf_get_sec_type_attr (abfd, sec);
|
| 9177 |
|
|
|
| 9178 |
|
|
return ppc_elf_get_sec_type_attr (abfd, sec);
|
| 9179 |
|
|
}
|
| 9180 |
|
|
|
| 9181 |
|
|
/* Like ppc_elf_link_hash_table_create, but overrides
|
| 9182 |
|
|
appropriately for VxWorks. */
|
| 9183 |
|
|
static struct bfd_link_hash_table *
|
| 9184 |
|
|
ppc_elf_vxworks_link_hash_table_create (bfd *abfd)
|
| 9185 |
|
|
{
|
| 9186 |
|
|
struct bfd_link_hash_table *ret;
|
| 9187 |
|
|
|
| 9188 |
|
|
ret = ppc_elf_link_hash_table_create (abfd);
|
| 9189 |
|
|
if (ret)
|
| 9190 |
|
|
{
|
| 9191 |
|
|
struct ppc_elf_link_hash_table *htab
|
| 9192 |
|
|
= (struct ppc_elf_link_hash_table *)ret;
|
| 9193 |
|
|
htab->is_vxworks = 1;
|
| 9194 |
|
|
htab->plt_type = PLT_VXWORKS;
|
| 9195 |
|
|
htab->plt_entry_size = VXWORKS_PLT_ENTRY_SIZE;
|
| 9196 |
|
|
htab->plt_slot_size = VXWORKS_PLT_ENTRY_SIZE;
|
| 9197 |
|
|
htab->plt_initial_entry_size = VXWORKS_PLT_INITIAL_ENTRY_SIZE;
|
| 9198 |
|
|
}
|
| 9199 |
|
|
return ret;
|
| 9200 |
|
|
}
|
| 9201 |
|
|
|
| 9202 |
|
|
/* Tweak magic VxWorks symbols as they are loaded. */
|
| 9203 |
|
|
static bfd_boolean
|
| 9204 |
|
|
ppc_elf_vxworks_add_symbol_hook (bfd *abfd,
|
| 9205 |
|
|
struct bfd_link_info *info,
|
| 9206 |
|
|
Elf_Internal_Sym *sym,
|
| 9207 |
|
|
const char **namep ATTRIBUTE_UNUSED,
|
| 9208 |
|
|
flagword *flagsp ATTRIBUTE_UNUSED,
|
| 9209 |
|
|
asection **secp,
|
| 9210 |
|
|
bfd_vma *valp)
|
| 9211 |
|
|
{
|
| 9212 |
|
|
if (!elf_vxworks_add_symbol_hook(abfd, info, sym,namep, flagsp, secp,
|
| 9213 |
|
|
valp))
|
| 9214 |
|
|
return FALSE;
|
| 9215 |
|
|
|
| 9216 |
|
|
return ppc_elf_add_symbol_hook(abfd, info, sym,namep, flagsp, secp, valp);
|
| 9217 |
|
|
}
|
| 9218 |
|
|
|
| 9219 |
|
|
static void
|
| 9220 |
|
|
ppc_elf_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
|
| 9221 |
|
|
{
|
| 9222 |
|
|
ppc_elf_final_write_processing(abfd, linker);
|
| 9223 |
|
|
elf_vxworks_final_write_processing(abfd, linker);
|
| 9224 |
|
|
}
|
| 9225 |
|
|
|
| 9226 |
|
|
/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
|
| 9227 |
|
|
define it. */
|
| 9228 |
|
|
#undef elf_backend_want_plt_sym
|
| 9229 |
|
|
#define elf_backend_want_plt_sym 1
|
| 9230 |
|
|
#undef elf_backend_want_got_plt
|
| 9231 |
|
|
#define elf_backend_want_got_plt 1
|
| 9232 |
|
|
#undef elf_backend_got_symbol_offset
|
| 9233 |
|
|
#define elf_backend_got_symbol_offset 0
|
| 9234 |
|
|
#undef elf_backend_plt_not_loaded
|
| 9235 |
|
|
#define elf_backend_plt_not_loaded 0
|
| 9236 |
|
|
#undef elf_backend_plt_readonly
|
| 9237 |
|
|
#define elf_backend_plt_readonly 1
|
| 9238 |
|
|
#undef elf_backend_got_header_size
|
| 9239 |
|
|
#define elf_backend_got_header_size 12
|
| 9240 |
|
|
|
| 9241 |
|
|
#undef bfd_elf32_get_synthetic_symtab
|
| 9242 |
|
|
|
| 9243 |
|
|
#undef bfd_elf32_bfd_link_hash_table_create
|
| 9244 |
|
|
#define bfd_elf32_bfd_link_hash_table_create \
|
| 9245 |
|
|
ppc_elf_vxworks_link_hash_table_create
|
| 9246 |
|
|
#undef elf_backend_add_symbol_hook
|
| 9247 |
|
|
#define elf_backend_add_symbol_hook \
|
| 9248 |
|
|
ppc_elf_vxworks_add_symbol_hook
|
| 9249 |
|
|
#undef elf_backend_link_output_symbol_hook
|
| 9250 |
|
|
#define elf_backend_link_output_symbol_hook \
|
| 9251 |
|
|
elf_vxworks_link_output_symbol_hook
|
| 9252 |
|
|
#undef elf_backend_final_write_processing
|
| 9253 |
|
|
#define elf_backend_final_write_processing \
|
| 9254 |
|
|
ppc_elf_vxworks_final_write_processing
|
| 9255 |
|
|
#undef elf_backend_get_sec_type_attr
|
| 9256 |
|
|
#define elf_backend_get_sec_type_attr \
|
| 9257 |
|
|
ppc_elf_vxworks_get_sec_type_attr
|
| 9258 |
|
|
#undef elf_backend_emit_relocs
|
| 9259 |
|
|
#define elf_backend_emit_relocs \
|
| 9260 |
|
|
elf_vxworks_emit_relocs
|
| 9261 |
|
|
|
| 9262 |
|
|
#undef elf32_bed
|
| 9263 |
|
|
#define elf32_bed ppc_elf_vxworks_bed
|
| 9264 |
|
|
#undef elf_backend_post_process_headers
|
| 9265 |
|
|
|
| 9266 |
|
|
#include "elf32-target.h"
|
