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sfurman |
/* Motorola 68HC11-specific support for 32-bit ELF
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Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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Contributed by Stephane Carrez (stcarrez@nerim.fr)
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(Heavily copied from the D10V port by Martin Hunt (hunt@cygnus.com))
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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 2 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 Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "bfd.h"
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#include "sysdep.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/m68hc11.h"
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static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
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PARAMS ((bfd *, bfd_reloc_code_real_type));
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static void m68hc11_info_to_howto_rel
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PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *));
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static bfd_reloc_status_type m68hc11_elf_ignore_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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/* GC mark and sweep. */
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static asection *elf32_m68hc11_gc_mark_hook
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PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
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struct elf_link_hash_entry *, Elf_Internal_Sym *));
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static boolean elf32_m68hc11_gc_sweep_hook
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PARAMS ((bfd *, struct bfd_link_info *, asection *,
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const Elf_Internal_Rela *));
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static boolean elf32_m68hc11_check_relocs
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PARAMS ((bfd *, struct bfd_link_info *, asection *,
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const Elf_Internal_Rela *));
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static boolean elf32_m68hc11_relocate_section
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PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
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Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
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static boolean m68hc11_elf_relax_section
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PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
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static void m68hc11_elf_relax_delete_bytes
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PARAMS ((bfd *, asection *, bfd_vma, int));
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static void m68hc11_relax_group
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PARAMS ((bfd *, asection *, bfd_byte *, unsigned,
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unsigned long, unsigned long));
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static int compare_reloc PARAMS ((const void *, const void *));
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boolean _bfd_m68hc11_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
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boolean _bfd_m68hc11_elf_set_private_flags PARAMS ((bfd *, flagword));
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boolean _bfd_m68hc11_elf_print_private_bfd_data PARAMS ((bfd *, PTR));
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/* Use REL instead of RELA to save space */
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#define USE_REL
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/* The Motorola 68HC11 microcontroler only addresses 64Kb.
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We must handle 8 and 16-bit relocations. The 32-bit relocation
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is defined but not used except by gas when -gstabs is used (which
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is wrong).
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The 3-bit and 16-bit PC rel relocation is only used by 68HC12. */
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static reloc_howto_type elf_m68hc11_howto_table[] = {
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/* This reloc does nothing. */
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HOWTO (R_M68HC11_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_dont,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_M68HC11_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 8 bit absolute relocation */
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HOWTO (R_M68HC11_8, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* 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_M68HC11_8", /* name */
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false, /* partial_inplace */
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0x00ff, /* src_mask */
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0x00ff, /* dst_mask */
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false), /* pcrel_offset */
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/* A 8 bit absolute relocation (upper address) */
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HOWTO (R_M68HC11_HI8, /* type */
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8, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* 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_M68HC11_HI8", /* name */
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false, /* partial_inplace */
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0x00ff, /* src_mask */
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0x00ff, /* dst_mask */
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false), /* pcrel_offset */
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/* A 8 bit absolute relocation (upper address) */
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HOWTO (R_M68HC11_LO8, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_M68HC11_LO8", /* name */
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false, /* partial_inplace */
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0x00ff, /* src_mask */
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0x00ff, /* dst_mask */
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false), /* pcrel_offset */
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/* A 8 bit PC-rel relocation */
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HOWTO (R_M68HC11_PCREL_8, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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true, /* 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_M68HC11_PCREL_8", /* name */
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false, /* partial_inplace */
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0x00ff, /* src_mask */
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0x00ff, /* dst_mask */
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false), /* pcrel_offset */
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/* A 16 bit absolute relocation */
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HOWTO (R_M68HC11_16, /* 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_dont /*bitfield */ , /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_M68HC11_16", /* name */
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false, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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false), /* pcrel_offset */
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/* A 32 bit absolute relocation. This one is never used for the
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code relocation. It's used by gas for -gstabs generation. */
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HOWTO (R_M68HC11_32, /* 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_M68HC11_32", /* name */
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false, /* partial_inplace */
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0xffffffff, /* src_mask */
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0xffffffff, /* dst_mask */
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false), /* pcrel_offset */
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/* A 3 bit absolute relocation */
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HOWTO (R_M68HC11_3B, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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3, /* 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_M68HC11_4B", /* name */
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false, /* partial_inplace */
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0x003, /* src_mask */
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0x003, /* dst_mask */
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false), /* pcrel_offset */
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/* A 16 bit PC-rel relocation */
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HOWTO (R_M68HC11_PCREL_16, /* 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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true, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_M68HC11_PCREL_16", /* name */
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false, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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false), /* pcrel_offset */
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/* GNU extension to record C++ vtable hierarchy */
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HOWTO (R_M68HC11_GNU_VTINHERIT, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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0, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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NULL, /* special_function */
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"R_M68HC11_GNU_VTINHERIT", /* 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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/* GNU extension to record C++ vtable member usage */
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HOWTO (R_M68HC11_GNU_VTENTRY, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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0, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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_bfd_elf_rel_vtable_reloc_fn, /* special_function */
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"R_M68HC11_GNU_VTENTRY", /* 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 24 bit relocation */
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HOWTO (R_M68HC11_24, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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24, /* 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_M68HC11_24", /* name */
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false, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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false), /* pcrel_offset */
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/* A 16-bit low relocation */
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HOWTO (R_M68HC11_LO16, /* 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_M68HC11_LO16", /* name */
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false, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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false), /* pcrel_offset */
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/* A page relocation */
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HOWTO (R_M68HC11_PAGE, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* 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_M68HC11_PAGE", /* name */
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false, /* partial_inplace */
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280 |
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0x00ff, /* src_mask */
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0x00ff, /* dst_mask */
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false), /* pcrel_offset */
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283 |
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284 |
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EMPTY_HOWTO (14),
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EMPTY_HOWTO (15),
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EMPTY_HOWTO (16),
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EMPTY_HOWTO (17),
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EMPTY_HOWTO (18),
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EMPTY_HOWTO (19),
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/* Mark beginning of a jump instruction (any form). */
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HOWTO (R_M68HC11_RL_JUMP, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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0, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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299 |
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m68hc11_elf_ignore_reloc, /* special_function */
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"R_M68HC11_RL_JUMP", /* name */
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true, /* partial_inplace */
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0, /* src_mask */
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0, /* dst_mask */
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true), /* pcrel_offset */
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305 |
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306 |
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/* Mark beginning of Gcc relaxation group instruction. */
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HOWTO (R_M68HC11_RL_GROUP, /* type */
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0, /* rightshift */
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309 |
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1, /* size (0 = byte, 1 = short, 2 = long) */
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0, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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314 |
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m68hc11_elf_ignore_reloc, /* special_function */
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315 |
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"R_M68HC11_RL_GROUP", /* name */
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true, /* partial_inplace */
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0, /* src_mask */
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0, /* dst_mask */
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true), /* pcrel_offset */
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};
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321 |
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322 |
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/* Map BFD reloc types to M68HC11 ELF reloc types. */
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323 |
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324 |
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struct m68hc11_reloc_map
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325 |
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{
|
326 |
|
|
bfd_reloc_code_real_type bfd_reloc_val;
|
327 |
|
|
unsigned char elf_reloc_val;
|
328 |
|
|
};
|
329 |
|
|
|
330 |
|
|
static const struct m68hc11_reloc_map m68hc11_reloc_map[] = {
|
331 |
|
|
{BFD_RELOC_NONE, R_M68HC11_NONE,},
|
332 |
|
|
{BFD_RELOC_8, R_M68HC11_8},
|
333 |
|
|
{BFD_RELOC_M68HC11_HI8, R_M68HC11_HI8},
|
334 |
|
|
{BFD_RELOC_M68HC11_LO8, R_M68HC11_LO8},
|
335 |
|
|
{BFD_RELOC_8_PCREL, R_M68HC11_PCREL_8},
|
336 |
|
|
{BFD_RELOC_16_PCREL, R_M68HC11_PCREL_16},
|
337 |
|
|
{BFD_RELOC_16, R_M68HC11_16},
|
338 |
|
|
{BFD_RELOC_32, R_M68HC11_32},
|
339 |
|
|
{BFD_RELOC_M68HC11_3B, R_M68HC11_3B},
|
340 |
|
|
|
341 |
|
|
{BFD_RELOC_VTABLE_INHERIT, R_M68HC11_GNU_VTINHERIT},
|
342 |
|
|
{BFD_RELOC_VTABLE_ENTRY, R_M68HC11_GNU_VTENTRY},
|
343 |
|
|
|
344 |
|
|
{BFD_RELOC_M68HC11_LO16, R_M68HC11_LO16},
|
345 |
|
|
{BFD_RELOC_M68HC11_PAGE, R_M68HC11_PAGE},
|
346 |
|
|
{BFD_RELOC_M68HC11_24, R_M68HC11_24},
|
347 |
|
|
|
348 |
|
|
{BFD_RELOC_M68HC11_RL_JUMP, R_M68HC11_RL_JUMP},
|
349 |
|
|
{BFD_RELOC_M68HC11_RL_GROUP, R_M68HC11_RL_GROUP},
|
350 |
|
|
};
|
351 |
|
|
|
352 |
|
|
static reloc_howto_type *
|
353 |
|
|
bfd_elf32_bfd_reloc_type_lookup (abfd, code)
|
354 |
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
355 |
|
|
bfd_reloc_code_real_type code;
|
356 |
|
|
{
|
357 |
|
|
unsigned int i;
|
358 |
|
|
|
359 |
|
|
for (i = 0;
|
360 |
|
|
i < sizeof (m68hc11_reloc_map) / sizeof (struct m68hc11_reloc_map);
|
361 |
|
|
i++)
|
362 |
|
|
{
|
363 |
|
|
if (m68hc11_reloc_map[i].bfd_reloc_val == code)
|
364 |
|
|
return &elf_m68hc11_howto_table[m68hc11_reloc_map[i].elf_reloc_val];
|
365 |
|
|
}
|
366 |
|
|
|
367 |
|
|
return NULL;
|
368 |
|
|
}
|
369 |
|
|
|
370 |
|
|
/* This function is used for relocs which are only used for relaxing,
|
371 |
|
|
which the linker should otherwise ignore. */
|
372 |
|
|
|
373 |
|
|
static bfd_reloc_status_type
|
374 |
|
|
m68hc11_elf_ignore_reloc (abfd, reloc_entry, symbol, data, input_section,
|
375 |
|
|
output_bfd, error_message)
|
376 |
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
377 |
|
|
arelent *reloc_entry;
|
378 |
|
|
asymbol *symbol ATTRIBUTE_UNUSED;
|
379 |
|
|
PTR data ATTRIBUTE_UNUSED;
|
380 |
|
|
asection *input_section;
|
381 |
|
|
bfd *output_bfd;
|
382 |
|
|
char **error_message ATTRIBUTE_UNUSED;
|
383 |
|
|
{
|
384 |
|
|
if (output_bfd != NULL)
|
385 |
|
|
reloc_entry->address += input_section->output_offset;
|
386 |
|
|
return bfd_reloc_ok;
|
387 |
|
|
}
|
388 |
|
|
|
389 |
|
|
/* Set the howto pointer for an M68HC11 ELF reloc. */
|
390 |
|
|
|
391 |
|
|
static void
|
392 |
|
|
m68hc11_info_to_howto_rel (abfd, cache_ptr, dst)
|
393 |
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
394 |
|
|
arelent *cache_ptr;
|
395 |
|
|
Elf32_Internal_Rel *dst;
|
396 |
|
|
{
|
397 |
|
|
unsigned int r_type;
|
398 |
|
|
|
399 |
|
|
r_type = ELF32_R_TYPE (dst->r_info);
|
400 |
|
|
BFD_ASSERT (r_type < (unsigned int) R_M68HC11_max);
|
401 |
|
|
cache_ptr->howto = &elf_m68hc11_howto_table[r_type];
|
402 |
|
|
}
|
403 |
|
|
|
404 |
|
|
static asection *
|
405 |
|
|
elf32_m68hc11_gc_mark_hook (sec, info, rel, h, sym)
|
406 |
|
|
asection *sec;
|
407 |
|
|
struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
408 |
|
|
Elf_Internal_Rela *rel;
|
409 |
|
|
struct elf_link_hash_entry *h;
|
410 |
|
|
Elf_Internal_Sym *sym;
|
411 |
|
|
{
|
412 |
|
|
if (h != NULL)
|
413 |
|
|
{
|
414 |
|
|
switch (ELF32_R_TYPE (rel->r_info))
|
415 |
|
|
{
|
416 |
|
|
default:
|
417 |
|
|
switch (h->root.type)
|
418 |
|
|
{
|
419 |
|
|
case bfd_link_hash_defined:
|
420 |
|
|
case bfd_link_hash_defweak:
|
421 |
|
|
return h->root.u.def.section;
|
422 |
|
|
|
423 |
|
|
case bfd_link_hash_common:
|
424 |
|
|
return h->root.u.c.p->section;
|
425 |
|
|
|
426 |
|
|
default:
|
427 |
|
|
break;
|
428 |
|
|
}
|
429 |
|
|
}
|
430 |
|
|
}
|
431 |
|
|
else
|
432 |
|
|
return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
|
433 |
|
|
|
434 |
|
|
return NULL;
|
435 |
|
|
}
|
436 |
|
|
|
437 |
|
|
static boolean
|
438 |
|
|
elf32_m68hc11_gc_sweep_hook (abfd, info, sec, relocs)
|
439 |
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
440 |
|
|
struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
441 |
|
|
asection *sec ATTRIBUTE_UNUSED;
|
442 |
|
|
const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED;
|
443 |
|
|
{
|
444 |
|
|
/* We don't use got and plt entries for 68hc11/68hc12. */
|
445 |
|
|
return true;
|
446 |
|
|
}
|
447 |
|
|
|
448 |
|
|
struct m68hc11_direct_relax
|
449 |
|
|
{
|
450 |
|
|
const char *name;
|
451 |
|
|
unsigned char code;
|
452 |
|
|
unsigned char direct_code;
|
453 |
|
|
} m68hc11_direct_relax_table[] = {
|
454 |
|
|
{ "adca", 0xB9, 0x99 },
|
455 |
|
|
{ "adcb", 0xF9, 0xD9 },
|
456 |
|
|
{ "adda", 0xBB, 0x9B },
|
457 |
|
|
{ "addb", 0xFB, 0xDB },
|
458 |
|
|
{ "addd", 0xF3, 0xD3 },
|
459 |
|
|
{ "anda", 0xB4, 0x94 },
|
460 |
|
|
{ "andb", 0xF4, 0xD4 },
|
461 |
|
|
{ "cmpa", 0xB1, 0x91 },
|
462 |
|
|
{ "cmpb", 0xF1, 0xD1 },
|
463 |
|
|
{ "cpd", 0xB3, 0x93 },
|
464 |
|
|
{ "cpxy", 0xBC, 0x9C },
|
465 |
|
|
/* { "cpy", 0xBC, 0x9C }, */
|
466 |
|
|
{ "eora", 0xB8, 0x98 },
|
467 |
|
|
{ "eorb", 0xF8, 0xD8 },
|
468 |
|
|
{ "jsr", 0xBD, 0x9D },
|
469 |
|
|
{ "ldaa", 0xB6, 0x96 },
|
470 |
|
|
{ "ldab", 0xF6, 0xD6 },
|
471 |
|
|
{ "ldd", 0xFC, 0xDC },
|
472 |
|
|
{ "lds", 0xBE, 0x9E },
|
473 |
|
|
{ "ldxy", 0xFE, 0xDE },
|
474 |
|
|
/* { "ldy", 0xFE, 0xDE },*/
|
475 |
|
|
{ "oraa", 0xBA, 0x9A },
|
476 |
|
|
{ "orab", 0xFA, 0xDA },
|
477 |
|
|
{ "sbca", 0xB2, 0x92 },
|
478 |
|
|
{ "sbcb", 0xF2, 0xD2 },
|
479 |
|
|
{ "staa", 0xB7, 0x97 },
|
480 |
|
|
{ "stab", 0xF7, 0xD7 },
|
481 |
|
|
{ "std", 0xFD, 0xDD },
|
482 |
|
|
{ "sts", 0xBF, 0x9F },
|
483 |
|
|
{ "stxy", 0xFF, 0xDF },
|
484 |
|
|
/* { "sty", 0xFF, 0xDF },*/
|
485 |
|
|
{ "suba", 0xB0, 0x90 },
|
486 |
|
|
{ "subb", 0xF0, 0xD0 },
|
487 |
|
|
{ "subd", 0xB3, 0x93 },
|
488 |
|
|
{ 0, 0, 0 }
|
489 |
|
|
};
|
490 |
|
|
|
491 |
|
|
static struct m68hc11_direct_relax *
|
492 |
|
|
find_relaxable_insn (unsigned char code)
|
493 |
|
|
{
|
494 |
|
|
int i;
|
495 |
|
|
|
496 |
|
|
for (i = 0; m68hc11_direct_relax_table[i].name; i++)
|
497 |
|
|
if (m68hc11_direct_relax_table[i].code == code)
|
498 |
|
|
return &m68hc11_direct_relax_table[i];
|
499 |
|
|
|
500 |
|
|
return 0;
|
501 |
|
|
}
|
502 |
|
|
|
503 |
|
|
static int
|
504 |
|
|
compare_reloc (e1, e2)
|
505 |
|
|
const void *e1;
|
506 |
|
|
const void *e2;
|
507 |
|
|
{
|
508 |
|
|
const Elf_Internal_Rela *i1 = (const Elf_Internal_Rela *) e1;
|
509 |
|
|
const Elf_Internal_Rela *i2 = (const Elf_Internal_Rela *) e2;
|
510 |
|
|
|
511 |
|
|
if (i1->r_offset == i2->r_offset)
|
512 |
|
|
return 0;
|
513 |
|
|
else
|
514 |
|
|
return i1->r_offset < i2->r_offset ? -1 : 1;
|
515 |
|
|
}
|
516 |
|
|
|
517 |
|
|
#define M6811_OP_LDX_IMMEDIATE (0xCE)
|
518 |
|
|
|
519 |
|
|
static void
|
520 |
|
|
m68hc11_relax_group (abfd, sec, contents, value, offset, end_group)
|
521 |
|
|
bfd *abfd;
|
522 |
|
|
asection *sec;
|
523 |
|
|
bfd_byte *contents;
|
524 |
|
|
unsigned value;
|
525 |
|
|
unsigned long offset;
|
526 |
|
|
unsigned long end_group;
|
527 |
|
|
{
|
528 |
|
|
unsigned char code;
|
529 |
|
|
unsigned long start_offset;
|
530 |
|
|
unsigned long ldx_offset = offset;
|
531 |
|
|
unsigned long ldx_size;
|
532 |
|
|
int can_delete_ldx;
|
533 |
|
|
int relax_ldy = 0;
|
534 |
|
|
|
535 |
|
|
/* First instruction of the relax group must be a
|
536 |
|
|
LDX #value or LDY #value. If this is not the case,
|
537 |
|
|
ignore the relax group. */
|
538 |
|
|
code = bfd_get_8 (abfd, contents + offset);
|
539 |
|
|
if (code == 0x18)
|
540 |
|
|
{
|
541 |
|
|
relax_ldy++;
|
542 |
|
|
offset++;
|
543 |
|
|
code = bfd_get_8 (abfd, contents + offset);
|
544 |
|
|
}
|
545 |
|
|
ldx_size = offset - ldx_offset + 3;
|
546 |
|
|
offset += 3;
|
547 |
|
|
if (code != M6811_OP_LDX_IMMEDIATE || offset >= end_group)
|
548 |
|
|
return;
|
549 |
|
|
|
550 |
|
|
|
551 |
|
|
/* We can remove the LDX/LDY only when all bset/brclr instructions
|
552 |
|
|
of the relax group have been converted to use direct addressing
|
553 |
|
|
mode. */
|
554 |
|
|
can_delete_ldx = 1;
|
555 |
|
|
while (offset < end_group)
|
556 |
|
|
{
|
557 |
|
|
unsigned isize;
|
558 |
|
|
unsigned new_value;
|
559 |
|
|
int bset_use_y;
|
560 |
|
|
|
561 |
|
|
bset_use_y = 0;
|
562 |
|
|
start_offset = offset;
|
563 |
|
|
code = bfd_get_8 (abfd, contents + offset);
|
564 |
|
|
if (code == 0x18)
|
565 |
|
|
{
|
566 |
|
|
bset_use_y++;
|
567 |
|
|
offset++;
|
568 |
|
|
code = bfd_get_8 (abfd, contents + offset);
|
569 |
|
|
}
|
570 |
|
|
|
571 |
|
|
/* Check the instruction and translate to use direct addressing mode. */
|
572 |
|
|
switch (code)
|
573 |
|
|
{
|
574 |
|
|
/* bset */
|
575 |
|
|
case 0x1C:
|
576 |
|
|
code = 0x14;
|
577 |
|
|
isize = 3;
|
578 |
|
|
break;
|
579 |
|
|
|
580 |
|
|
/* brclr */
|
581 |
|
|
case 0x1F:
|
582 |
|
|
code = 0x13;
|
583 |
|
|
isize = 4;
|
584 |
|
|
break;
|
585 |
|
|
|
586 |
|
|
/* brset */
|
587 |
|
|
case 0x1E:
|
588 |
|
|
code = 0x12;
|
589 |
|
|
isize = 4;
|
590 |
|
|
break;
|
591 |
|
|
|
592 |
|
|
/* bclr */
|
593 |
|
|
case 0x1D:
|
594 |
|
|
code = 0x15;
|
595 |
|
|
isize = 3;
|
596 |
|
|
break;
|
597 |
|
|
|
598 |
|
|
/* This instruction is not recognized and we are not
|
599 |
|
|
at end of the relax group. Ignore and don't remove
|
600 |
|
|
the first LDX (we don't know what it is used for...). */
|
601 |
|
|
default:
|
602 |
|
|
return;
|
603 |
|
|
}
|
604 |
|
|
new_value = (unsigned) bfd_get_8 (abfd, contents + offset + 1);
|
605 |
|
|
new_value += value;
|
606 |
|
|
if ((new_value & 0xff00) == 0 && bset_use_y == relax_ldy)
|
607 |
|
|
{
|
608 |
|
|
bfd_put_8 (abfd, code, contents + offset);
|
609 |
|
|
bfd_put_8 (abfd, new_value, contents + offset + 1);
|
610 |
|
|
if (start_offset != offset)
|
611 |
|
|
{
|
612 |
|
|
m68hc11_elf_relax_delete_bytes (abfd, sec, start_offset,
|
613 |
|
|
offset - start_offset);
|
614 |
|
|
end_group--;
|
615 |
|
|
}
|
616 |
|
|
}
|
617 |
|
|
else
|
618 |
|
|
{
|
619 |
|
|
can_delete_ldx = 0;
|
620 |
|
|
}
|
621 |
|
|
offset = start_offset + isize;
|
622 |
|
|
}
|
623 |
|
|
if (can_delete_ldx)
|
624 |
|
|
{
|
625 |
|
|
/* Remove the move instruction (3 or 4 bytes win). */
|
626 |
|
|
m68hc11_elf_relax_delete_bytes (abfd, sec, ldx_offset, ldx_size);
|
627 |
|
|
}
|
628 |
|
|
}
|
629 |
|
|
|
630 |
|
|
/* This function handles relaxing for the 68HC11.
|
631 |
|
|
|
632 |
|
|
|
633 |
|
|
and somewhat more difficult to support. */
|
634 |
|
|
|
635 |
|
|
static boolean
|
636 |
|
|
m68hc11_elf_relax_section (abfd, sec, link_info, again)
|
637 |
|
|
bfd *abfd;
|
638 |
|
|
asection *sec;
|
639 |
|
|
struct bfd_link_info *link_info;
|
640 |
|
|
boolean *again;
|
641 |
|
|
{
|
642 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
643 |
|
|
Elf_Internal_Shdr *shndx_hdr;
|
644 |
|
|
Elf_Internal_Rela *internal_relocs;
|
645 |
|
|
Elf_Internal_Rela *free_relocs = NULL;
|
646 |
|
|
Elf_Internal_Rela *irel, *irelend;
|
647 |
|
|
bfd_byte *contents = NULL;
|
648 |
|
|
bfd_byte *free_contents = NULL;
|
649 |
|
|
Elf32_External_Sym *extsyms = NULL;
|
650 |
|
|
Elf32_External_Sym *free_extsyms = NULL;
|
651 |
|
|
Elf_Internal_Rela *prev_insn_branch = NULL;
|
652 |
|
|
Elf_Internal_Rela *prev_insn_group = NULL;
|
653 |
|
|
unsigned insn_group_value = 0;
|
654 |
|
|
Elf_External_Sym_Shndx *shndx_buf = NULL;
|
655 |
|
|
|
656 |
|
|
/* Assume nothing changes. */
|
657 |
|
|
*again = false;
|
658 |
|
|
|
659 |
|
|
/* We don't have to do anything for a relocateable link, if
|
660 |
|
|
this section does not have relocs, or if this is not a
|
661 |
|
|
code section. */
|
662 |
|
|
if (link_info->relocateable
|
663 |
|
|
|| (sec->flags & SEC_RELOC) == 0
|
664 |
|
|
|| sec->reloc_count == 0
|
665 |
|
|
|| (sec->flags & SEC_CODE) == 0)
|
666 |
|
|
return true;
|
667 |
|
|
|
668 |
|
|
/* If this is the first time we have been called for this section,
|
669 |
|
|
initialize the cooked size. */
|
670 |
|
|
if (sec->_cooked_size == 0)
|
671 |
|
|
sec->_cooked_size = sec->_raw_size;
|
672 |
|
|
|
673 |
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
674 |
|
|
shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
|
675 |
|
|
|
676 |
|
|
/* Get a copy of the native relocations. */
|
677 |
|
|
internal_relocs = (_bfd_elf32_link_read_relocs
|
678 |
|
|
(abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
|
679 |
|
|
link_info->keep_memory));
|
680 |
|
|
if (internal_relocs == NULL)
|
681 |
|
|
goto error_return;
|
682 |
|
|
if (! link_info->keep_memory)
|
683 |
|
|
free_relocs = internal_relocs;
|
684 |
|
|
|
685 |
|
|
/* Checking for branch relaxation relies on the relocations to
|
686 |
|
|
be sorted on 'r_offset'. This is not guaranteed so we must sort. */
|
687 |
|
|
qsort (internal_relocs, sec->reloc_count, sizeof (Elf_Internal_Rela),
|
688 |
|
|
compare_reloc);
|
689 |
|
|
|
690 |
|
|
/* Walk through them looking for relaxing opportunities. */
|
691 |
|
|
irelend = internal_relocs + sec->reloc_count;
|
692 |
|
|
for (irel = internal_relocs; irel < irelend; irel++)
|
693 |
|
|
{
|
694 |
|
|
bfd_vma symval;
|
695 |
|
|
bfd_vma value;
|
696 |
|
|
Elf_Internal_Sym isym;
|
697 |
|
|
|
698 |
|
|
/* If this isn't something that can be relaxed, then ignore
|
699 |
|
|
this reloc. */
|
700 |
|
|
if (ELF32_R_TYPE (irel->r_info) != (int) R_M68HC11_16
|
701 |
|
|
&& ELF32_R_TYPE (irel->r_info) != (int) R_M68HC11_RL_JUMP
|
702 |
|
|
&& ELF32_R_TYPE (irel->r_info) != (int) R_M68HC11_RL_GROUP)
|
703 |
|
|
{
|
704 |
|
|
prev_insn_branch = 0;
|
705 |
|
|
prev_insn_group = 0;
|
706 |
|
|
continue;
|
707 |
|
|
}
|
708 |
|
|
|
709 |
|
|
/* Get the section contents if we haven't done so already. */
|
710 |
|
|
if (contents == NULL)
|
711 |
|
|
{
|
712 |
|
|
/* Get cached copy if it exists. */
|
713 |
|
|
if (elf_section_data (sec)->this_hdr.contents != NULL)
|
714 |
|
|
contents = elf_section_data (sec)->this_hdr.contents;
|
715 |
|
|
else
|
716 |
|
|
{
|
717 |
|
|
/* Go get them off disk. */
|
718 |
|
|
contents = (bfd_byte *) bfd_malloc (sec->_raw_size);
|
719 |
|
|
if (contents == NULL)
|
720 |
|
|
goto error_return;
|
721 |
|
|
free_contents = contents;
|
722 |
|
|
|
723 |
|
|
if (! bfd_get_section_contents (abfd, sec, contents,
|
724 |
|
|
(file_ptr) 0, sec->_raw_size))
|
725 |
|
|
goto error_return;
|
726 |
|
|
}
|
727 |
|
|
}
|
728 |
|
|
|
729 |
|
|
/* Try to eliminate an unconditional 8 bit pc-relative branch
|
730 |
|
|
which immediately follows a conditional 8 bit pc-relative
|
731 |
|
|
branch around the unconditional branch.
|
732 |
|
|
|
733 |
|
|
original: new:
|
734 |
|
|
bCC lab1 bCC' lab2
|
735 |
|
|
bra lab2
|
736 |
|
|
lab1: lab1:
|
737 |
|
|
|
738 |
|
|
This happens when the bCC can't reach lab2 at assembly time,
|
739 |
|
|
but due to other relaxations it can reach at link time. */
|
740 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_M68HC11_RL_JUMP)
|
741 |
|
|
{
|
742 |
|
|
Elf_Internal_Rela *nrel;
|
743 |
|
|
unsigned char code;
|
744 |
|
|
unsigned char roffset;
|
745 |
|
|
|
746 |
|
|
prev_insn_branch = 0;
|
747 |
|
|
prev_insn_group = 0;
|
748 |
|
|
|
749 |
|
|
/* Do nothing if this reloc is the last byte in the section. */
|
750 |
|
|
if (irel->r_offset == sec->_cooked_size)
|
751 |
|
|
continue;
|
752 |
|
|
|
753 |
|
|
/* See if the next instruction is an unconditional pc-relative
|
754 |
|
|
branch, more often than not this test will fail, so we
|
755 |
|
|
test it first to speed things up. */
|
756 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset + 2);
|
757 |
|
|
if (code != 0x7e)
|
758 |
|
|
continue;
|
759 |
|
|
|
760 |
|
|
/* Also make sure the next relocation applies to the next
|
761 |
|
|
instruction and that it's a pc-relative 8 bit branch. */
|
762 |
|
|
nrel = irel + 1;
|
763 |
|
|
if (nrel == irelend
|
764 |
|
|
|| irel->r_offset + 3 != nrel->r_offset
|
765 |
|
|
|| ELF32_R_TYPE (nrel->r_info) != (int) R_M68HC11_16)
|
766 |
|
|
continue;
|
767 |
|
|
|
768 |
|
|
/* Make sure our destination immediately follows the
|
769 |
|
|
unconditional branch. */
|
770 |
|
|
roffset = bfd_get_8 (abfd, contents + irel->r_offset + 1);
|
771 |
|
|
if (roffset != 3)
|
772 |
|
|
continue;
|
773 |
|
|
|
774 |
|
|
prev_insn_branch = irel;
|
775 |
|
|
prev_insn_group = 0;
|
776 |
|
|
continue;
|
777 |
|
|
}
|
778 |
|
|
|
779 |
|
|
/* Read this BFD's symbols if we haven't done so already. */
|
780 |
|
|
if (extsyms == NULL)
|
781 |
|
|
{
|
782 |
|
|
/* Get cached copy if it exists. */
|
783 |
|
|
if (symtab_hdr->contents != NULL)
|
784 |
|
|
extsyms = (Elf32_External_Sym *) symtab_hdr->contents;
|
785 |
|
|
else
|
786 |
|
|
{
|
787 |
|
|
/* Go get them off disk. */
|
788 |
|
|
bfd_size_type amt = symtab_hdr->sh_size;
|
789 |
|
|
extsyms = (Elf32_External_Sym *) bfd_malloc (amt);
|
790 |
|
|
if (extsyms == NULL)
|
791 |
|
|
goto error_return;
|
792 |
|
|
free_extsyms = extsyms;
|
793 |
|
|
if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0
|
794 |
|
|
|| bfd_bread ((PTR) extsyms, amt, abfd) != amt)
|
795 |
|
|
goto error_return;
|
796 |
|
|
}
|
797 |
|
|
|
798 |
|
|
if (shndx_hdr->sh_size != 0)
|
799 |
|
|
{
|
800 |
|
|
bfd_size_type amt;
|
801 |
|
|
|
802 |
|
|
amt = symtab_hdr->sh_info * sizeof (Elf_External_Sym_Shndx);
|
803 |
|
|
shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (amt);
|
804 |
|
|
if (shndx_buf == NULL)
|
805 |
|
|
goto error_return;
|
806 |
|
|
if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0
|
807 |
|
|
|| bfd_bread ((PTR) shndx_buf, amt, abfd) != amt)
|
808 |
|
|
goto error_return;
|
809 |
|
|
shndx_hdr->contents = (PTR) shndx_buf;
|
810 |
|
|
}
|
811 |
|
|
}
|
812 |
|
|
|
813 |
|
|
/* Get the value of the symbol referred to by the reloc. */
|
814 |
|
|
if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
|
815 |
|
|
{
|
816 |
|
|
Elf32_External_Sym *esym;
|
817 |
|
|
Elf_External_Sym_Shndx *shndx;
|
818 |
|
|
asection *sym_sec;
|
819 |
|
|
|
820 |
|
|
/* A local symbol. */
|
821 |
|
|
esym = extsyms + ELF32_R_SYM (irel->r_info);
|
822 |
|
|
shndx = shndx_buf + (shndx_buf ? ELF32_R_SYM (irel->r_info) : 0);
|
823 |
|
|
bfd_elf32_swap_symbol_in (abfd, esym, shndx, &isym);
|
824 |
|
|
|
825 |
|
|
sym_sec = bfd_section_from_elf_index (abfd, isym.st_shndx);
|
826 |
|
|
symval = (isym.st_value
|
827 |
|
|
+ sym_sec->output_section->vma
|
828 |
|
|
+ sym_sec->output_offset);
|
829 |
|
|
}
|
830 |
|
|
else
|
831 |
|
|
{
|
832 |
|
|
unsigned long indx;
|
833 |
|
|
struct elf_link_hash_entry *h;
|
834 |
|
|
|
835 |
|
|
/* An external symbol. */
|
836 |
|
|
indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
|
837 |
|
|
h = elf_sym_hashes (abfd)[indx];
|
838 |
|
|
BFD_ASSERT (h != NULL);
|
839 |
|
|
if (h->root.type != bfd_link_hash_defined
|
840 |
|
|
&& h->root.type != bfd_link_hash_defweak)
|
841 |
|
|
{
|
842 |
|
|
/* This appears to be a reference to an undefined
|
843 |
|
|
symbol. Just ignore it--it will be caught by the
|
844 |
|
|
regular reloc processing. */
|
845 |
|
|
prev_insn_branch = 0;
|
846 |
|
|
prev_insn_group = 0;
|
847 |
|
|
continue;
|
848 |
|
|
}
|
849 |
|
|
|
850 |
|
|
symval = (h->root.u.def.value
|
851 |
|
|
+ h->root.u.def.section->output_section->vma
|
852 |
|
|
+ h->root.u.def.section->output_offset);
|
853 |
|
|
}
|
854 |
|
|
|
855 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_M68HC11_RL_GROUP)
|
856 |
|
|
{
|
857 |
|
|
prev_insn_branch = 0;
|
858 |
|
|
prev_insn_group = 0;
|
859 |
|
|
|
860 |
|
|
/* Do nothing if this reloc is the last byte in the section. */
|
861 |
|
|
if (irel->r_offset == sec->_cooked_size)
|
862 |
|
|
continue;
|
863 |
|
|
|
864 |
|
|
prev_insn_group = irel;
|
865 |
|
|
insn_group_value = isym.st_value;
|
866 |
|
|
continue;
|
867 |
|
|
}
|
868 |
|
|
|
869 |
|
|
value = symval;
|
870 |
|
|
/* Try to turn a far branch to a near branch. */
|
871 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_M68HC11_16
|
872 |
|
|
&& prev_insn_branch)
|
873 |
|
|
{
|
874 |
|
|
bfd_vma offset;
|
875 |
|
|
unsigned char code;
|
876 |
|
|
|
877 |
|
|
offset = value - (prev_insn_branch->r_offset
|
878 |
|
|
+ sec->output_section->vma
|
879 |
|
|
+ sec->output_offset + 2);
|
880 |
|
|
|
881 |
|
|
/* If the offset is still out of -128..+127 range,
|
882 |
|
|
leave that far branch unchanged. */
|
883 |
|
|
if ((offset & 0xff80) != 0 && (offset & 0xff80) != 0xff80)
|
884 |
|
|
{
|
885 |
|
|
prev_insn_branch = 0;
|
886 |
|
|
continue;
|
887 |
|
|
}
|
888 |
|
|
|
889 |
|
|
/* Shrink the branch. */
|
890 |
|
|
code = bfd_get_8 (abfd, contents + prev_insn_branch->r_offset);
|
891 |
|
|
if (code == 0x7e)
|
892 |
|
|
{
|
893 |
|
|
code = 0x20;
|
894 |
|
|
bfd_put_8 (abfd, code, contents + prev_insn_branch->r_offset);
|
895 |
|
|
bfd_put_8 (abfd, offset,
|
896 |
|
|
contents + prev_insn_branch->r_offset + 1);
|
897 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
898 |
|
|
R_M68HC11_NONE);
|
899 |
|
|
m68hc11_elf_relax_delete_bytes (abfd, sec,
|
900 |
|
|
irel->r_offset, 1);
|
901 |
|
|
}
|
902 |
|
|
else
|
903 |
|
|
{
|
904 |
|
|
code ^= 0x1;
|
905 |
|
|
bfd_put_8 (abfd, code, contents + prev_insn_branch->r_offset);
|
906 |
|
|
bfd_put_8 (abfd, offset,
|
907 |
|
|
contents + prev_insn_branch->r_offset + 1);
|
908 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
909 |
|
|
R_M68HC11_NONE);
|
910 |
|
|
m68hc11_elf_relax_delete_bytes (abfd, sec,
|
911 |
|
|
irel->r_offset - 1, 3);
|
912 |
|
|
}
|
913 |
|
|
prev_insn_branch = 0;
|
914 |
|
|
}
|
915 |
|
|
|
916 |
|
|
/* Try to turn a 16 bit address into a 8 bit page0 address. */
|
917 |
|
|
else if (ELF32_R_TYPE (irel->r_info) == (int) R_M68HC11_16
|
918 |
|
|
&& (value & 0xff00) == 0)
|
919 |
|
|
{
|
920 |
|
|
unsigned char code;
|
921 |
|
|
unsigned short offset;
|
922 |
|
|
struct m68hc11_direct_relax *rinfo;
|
923 |
|
|
|
924 |
|
|
prev_insn_branch = 0;
|
925 |
|
|
offset = bfd_get_16 (abfd, contents + irel->r_offset);
|
926 |
|
|
offset += value;
|
927 |
|
|
if ((offset & 0xff00) != 0)
|
928 |
|
|
{
|
929 |
|
|
prev_insn_group = 0;
|
930 |
|
|
continue;
|
931 |
|
|
}
|
932 |
|
|
|
933 |
|
|
if (prev_insn_group)
|
934 |
|
|
{
|
935 |
|
|
/* Note that we've changed the reldection contents, etc. */
|
936 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
937 |
|
|
free_relocs = NULL;
|
938 |
|
|
|
939 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
940 |
|
|
free_contents = NULL;
|
941 |
|
|
|
942 |
|
|
symtab_hdr->contents = (bfd_byte *) extsyms;
|
943 |
|
|
free_extsyms = NULL;
|
944 |
|
|
|
945 |
|
|
m68hc11_relax_group (abfd, sec, contents, offset,
|
946 |
|
|
prev_insn_group->r_offset,
|
947 |
|
|
insn_group_value);
|
948 |
|
|
irel = prev_insn_group;
|
949 |
|
|
prev_insn_group = 0;
|
950 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
951 |
|
|
R_M68HC11_NONE);
|
952 |
|
|
continue;
|
953 |
|
|
}
|
954 |
|
|
|
955 |
|
|
/* Get the opcode. */
|
956 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
|
957 |
|
|
rinfo = find_relaxable_insn (code);
|
958 |
|
|
if (rinfo == 0)
|
959 |
|
|
{
|
960 |
|
|
prev_insn_group = 0;
|
961 |
|
|
continue;
|
962 |
|
|
}
|
963 |
|
|
|
964 |
|
|
/* Note that we've changed the reldection contents, etc. */
|
965 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
966 |
|
|
free_relocs = NULL;
|
967 |
|
|
|
968 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
969 |
|
|
free_contents = NULL;
|
970 |
|
|
|
971 |
|
|
symtab_hdr->contents = (bfd_byte *) extsyms;
|
972 |
|
|
free_extsyms = NULL;
|
973 |
|
|
|
974 |
|
|
/* Fix the opcode. */
|
975 |
|
|
/* printf ("A relaxable case : 0x%02x (%s)\n",
|
976 |
|
|
code, rinfo->name); */
|
977 |
|
|
bfd_put_8 (abfd, rinfo->direct_code,
|
978 |
|
|
contents + irel->r_offset - 1);
|
979 |
|
|
|
980 |
|
|
/* Delete one byte of data (upper byte of address). */
|
981 |
|
|
m68hc11_elf_relax_delete_bytes (abfd, sec, irel->r_offset, 1);
|
982 |
|
|
|
983 |
|
|
/* Fix the relocation's type. */
|
984 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
985 |
|
|
R_M68HC11_8);
|
986 |
|
|
|
987 |
|
|
/* That will change things, so, we should relax again.
|
988 |
|
|
Note that this is not required, and it may be slow. */
|
989 |
|
|
*again = true;
|
990 |
|
|
}
|
991 |
|
|
else if (ELF32_R_TYPE (irel->r_info) == R_M68HC11_16)
|
992 |
|
|
{
|
993 |
|
|
unsigned char code;
|
994 |
|
|
bfd_vma offset;
|
995 |
|
|
|
996 |
|
|
prev_insn_branch = 0;
|
997 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
|
998 |
|
|
if (code == 0x7e)
|
999 |
|
|
{
|
1000 |
|
|
offset = value - (irel->r_offset
|
1001 |
|
|
+ sec->output_section->vma
|
1002 |
|
|
+ sec->output_offset + 1);
|
1003 |
|
|
offset += bfd_get_16 (abfd, contents + irel->r_offset);
|
1004 |
|
|
|
1005 |
|
|
/* If the offset is still out of -128..+127 range,
|
1006 |
|
|
leave that far branch unchanged. */
|
1007 |
|
|
if ((offset & 0xff80) == 0 || (offset & 0xff80) == 0xff80)
|
1008 |
|
|
{
|
1009 |
|
|
|
1010 |
|
|
/* Note that we've changed the reldection contents, etc. */
|
1011 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
1012 |
|
|
free_relocs = NULL;
|
1013 |
|
|
|
1014 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
1015 |
|
|
free_contents = NULL;
|
1016 |
|
|
|
1017 |
|
|
symtab_hdr->contents = (bfd_byte *) extsyms;
|
1018 |
|
|
free_extsyms = NULL;
|
1019 |
|
|
|
1020 |
|
|
/* Shrink the branch. */
|
1021 |
|
|
code = 0x20;
|
1022 |
|
|
bfd_put_8 (abfd, code,
|
1023 |
|
|
contents + irel->r_offset - 1);
|
1024 |
|
|
bfd_put_8 (abfd, offset,
|
1025 |
|
|
contents + irel->r_offset);
|
1026 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
1027 |
|
|
R_M68HC11_NONE);
|
1028 |
|
|
m68hc11_elf_relax_delete_bytes (abfd, sec,
|
1029 |
|
|
irel->r_offset + 1, 1);
|
1030 |
|
|
}
|
1031 |
|
|
}
|
1032 |
|
|
}
|
1033 |
|
|
prev_insn_branch = 0;
|
1034 |
|
|
}
|
1035 |
|
|
|
1036 |
|
|
if (free_relocs != NULL)
|
1037 |
|
|
{
|
1038 |
|
|
free (free_relocs);
|
1039 |
|
|
free_relocs = NULL;
|
1040 |
|
|
}
|
1041 |
|
|
|
1042 |
|
|
if (free_contents != NULL)
|
1043 |
|
|
{
|
1044 |
|
|
if (! link_info->keep_memory)
|
1045 |
|
|
free (free_contents);
|
1046 |
|
|
else
|
1047 |
|
|
{
|
1048 |
|
|
/* Cache the section contents for elf_link_input_bfd. */
|
1049 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
1050 |
|
|
}
|
1051 |
|
|
free_contents = NULL;
|
1052 |
|
|
}
|
1053 |
|
|
|
1054 |
|
|
if (free_extsyms != NULL)
|
1055 |
|
|
{
|
1056 |
|
|
if (! link_info->keep_memory)
|
1057 |
|
|
free (free_extsyms);
|
1058 |
|
|
else
|
1059 |
|
|
{
|
1060 |
|
|
/* Cache the symbols for elf_link_input_bfd. */
|
1061 |
|
|
symtab_hdr->contents = (unsigned char *) extsyms;
|
1062 |
|
|
}
|
1063 |
|
|
free_extsyms = NULL;
|
1064 |
|
|
}
|
1065 |
|
|
|
1066 |
|
|
return true;
|
1067 |
|
|
|
1068 |
|
|
error_return:
|
1069 |
|
|
if (free_relocs != NULL)
|
1070 |
|
|
free (free_relocs);
|
1071 |
|
|
if (free_contents != NULL)
|
1072 |
|
|
free (free_contents);
|
1073 |
|
|
if (free_extsyms != NULL)
|
1074 |
|
|
free (free_extsyms);
|
1075 |
|
|
return false;
|
1076 |
|
|
}
|
1077 |
|
|
|
1078 |
|
|
/* Delete some bytes from a section while relaxing. */
|
1079 |
|
|
|
1080 |
|
|
static void
|
1081 |
|
|
m68hc11_elf_relax_delete_bytes (abfd, sec, addr, count)
|
1082 |
|
|
bfd *abfd;
|
1083 |
|
|
asection *sec;
|
1084 |
|
|
bfd_vma addr;
|
1085 |
|
|
int count;
|
1086 |
|
|
{
|
1087 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
1088 |
|
|
Elf_Internal_Shdr *shndx_hdr;
|
1089 |
|
|
Elf32_External_Sym *extsyms;
|
1090 |
|
|
unsigned int sec_shndx;
|
1091 |
|
|
Elf_External_Sym_Shndx *shndx;
|
1092 |
|
|
bfd_byte *contents;
|
1093 |
|
|
Elf_Internal_Rela *irel, *irelend;
|
1094 |
|
|
bfd_vma toaddr;
|
1095 |
|
|
Elf32_External_Sym *esym, *esymend;
|
1096 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
1097 |
|
|
struct elf_link_hash_entry **end_hashes;
|
1098 |
|
|
unsigned int symcount;
|
1099 |
|
|
|
1100 |
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
1101 |
|
|
extsyms = (Elf32_External_Sym *) symtab_hdr->contents;
|
1102 |
|
|
|
1103 |
|
|
sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
|
1104 |
|
|
|
1105 |
|
|
contents = elf_section_data (sec)->this_hdr.contents;
|
1106 |
|
|
|
1107 |
|
|
toaddr = sec->_cooked_size;
|
1108 |
|
|
|
1109 |
|
|
irel = elf_section_data (sec)->relocs;
|
1110 |
|
|
irelend = irel + sec->reloc_count;
|
1111 |
|
|
|
1112 |
|
|
/* Actually delete the bytes. */
|
1113 |
|
|
memmove (contents + addr, contents + addr + count,
|
1114 |
|
|
(size_t) (toaddr - addr - count));
|
1115 |
|
|
sec->_cooked_size -= count;
|
1116 |
|
|
|
1117 |
|
|
/* Adjust all the relocs. */
|
1118 |
|
|
for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
|
1119 |
|
|
{
|
1120 |
|
|
unsigned char code;
|
1121 |
|
|
unsigned char offset;
|
1122 |
|
|
unsigned short raddr;
|
1123 |
|
|
unsigned long old_offset;
|
1124 |
|
|
int branch_pos;
|
1125 |
|
|
|
1126 |
|
|
old_offset = irel->r_offset;
|
1127 |
|
|
|
1128 |
|
|
/* See if this reloc was for the bytes we have deleted, in which
|
1129 |
|
|
case we no longer care about it. Don't delete relocs which
|
1130 |
|
|
represent addresses, though. */
|
1131 |
|
|
if (ELF32_R_TYPE (irel->r_info) != R_M68HC11_RL_JUMP
|
1132 |
|
|
&& irel->r_offset >= addr && irel->r_offset < addr + count)
|
1133 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
1134 |
|
|
R_M68HC11_NONE);
|
1135 |
|
|
|
1136 |
|
|
if (ELF32_R_TYPE (irel->r_info) == R_M68HC11_NONE)
|
1137 |
|
|
continue;
|
1138 |
|
|
|
1139 |
|
|
/* Get the new reloc address. */
|
1140 |
|
|
if ((irel->r_offset > addr
|
1141 |
|
|
&& irel->r_offset < toaddr))
|
1142 |
|
|
irel->r_offset -= count;
|
1143 |
|
|
|
1144 |
|
|
/* If this is a PC relative reloc, see if the range it covers
|
1145 |
|
|
includes the bytes we have deleted. */
|
1146 |
|
|
switch (ELF32_R_TYPE (irel->r_info))
|
1147 |
|
|
{
|
1148 |
|
|
default:
|
1149 |
|
|
break;
|
1150 |
|
|
|
1151 |
|
|
case R_M68HC11_RL_JUMP:
|
1152 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset);
|
1153 |
|
|
switch (code)
|
1154 |
|
|
{
|
1155 |
|
|
/* jsr and jmp instruction are also marked with RL_JUMP
|
1156 |
|
|
relocs but no adjustment must be made. */
|
1157 |
|
|
case 0x7e:
|
1158 |
|
|
case 0x9d:
|
1159 |
|
|
case 0xbd:
|
1160 |
|
|
continue;
|
1161 |
|
|
|
1162 |
|
|
case 0x12:
|
1163 |
|
|
case 0x13:
|
1164 |
|
|
branch_pos = 3;
|
1165 |
|
|
raddr = 4;
|
1166 |
|
|
|
1167 |
|
|
/* Special case when we translate a brclr N,y into brclr *<addr>
|
1168 |
|
|
In this case, the 0x18 page2 prefix is removed.
|
1169 |
|
|
The reloc offset is not modified but the instruction
|
1170 |
|
|
size is reduced by 1. */
|
1171 |
|
|
if (old_offset == addr)
|
1172 |
|
|
raddr++;
|
1173 |
|
|
break;
|
1174 |
|
|
|
1175 |
|
|
case 0x1e:
|
1176 |
|
|
case 0x1f:
|
1177 |
|
|
branch_pos = 3;
|
1178 |
|
|
raddr = 4;
|
1179 |
|
|
break;
|
1180 |
|
|
|
1181 |
|
|
case 0x18:
|
1182 |
|
|
branch_pos = 4;
|
1183 |
|
|
raddr = 5;
|
1184 |
|
|
break;
|
1185 |
|
|
|
1186 |
|
|
default:
|
1187 |
|
|
branch_pos = 1;
|
1188 |
|
|
raddr = 2;
|
1189 |
|
|
break;
|
1190 |
|
|
}
|
1191 |
|
|
offset = bfd_get_8 (abfd, contents + irel->r_offset + branch_pos);
|
1192 |
|
|
raddr += old_offset;
|
1193 |
|
|
raddr += ((unsigned short) offset | ((offset & 0x80) ? 0xff00 : 0));
|
1194 |
|
|
if (irel->r_offset < addr && raddr >= addr)
|
1195 |
|
|
{
|
1196 |
|
|
offset -= count;
|
1197 |
|
|
bfd_put_8 (abfd, offset, contents + irel->r_offset + branch_pos);
|
1198 |
|
|
}
|
1199 |
|
|
else if (irel->r_offset >= addr && raddr <= addr)
|
1200 |
|
|
{
|
1201 |
|
|
offset += count;
|
1202 |
|
|
bfd_put_8 (abfd, offset, contents + irel->r_offset + branch_pos);
|
1203 |
|
|
}
|
1204 |
|
|
else
|
1205 |
|
|
{
|
1206 |
|
|
/*printf ("Not adjusted 0x%04x [0x%4x 0x%4x]\n", raddr,
|
1207 |
|
|
irel->r_offset, addr);*/
|
1208 |
|
|
}
|
1209 |
|
|
|
1210 |
|
|
break;
|
1211 |
|
|
}
|
1212 |
|
|
}
|
1213 |
|
|
|
1214 |
|
|
/* Adjust the local symbols defined in this section. */
|
1215 |
|
|
shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
|
1216 |
|
|
shndx = (Elf_External_Sym_Shndx *) shndx_hdr->contents;
|
1217 |
|
|
esym = extsyms;
|
1218 |
|
|
esymend = esym + symtab_hdr->sh_info;
|
1219 |
|
|
for (; esym < esymend; esym++, shndx = (shndx ? shndx + 1 : NULL))
|
1220 |
|
|
{
|
1221 |
|
|
Elf_Internal_Sym isym;
|
1222 |
|
|
Elf_External_Sym_Shndx dummy;
|
1223 |
|
|
|
1224 |
|
|
bfd_elf32_swap_symbol_in (abfd, esym, shndx, &isym);
|
1225 |
|
|
|
1226 |
|
|
if (isym.st_shndx == sec_shndx
|
1227 |
|
|
&& isym.st_value > addr
|
1228 |
|
|
&& isym.st_value < toaddr)
|
1229 |
|
|
{
|
1230 |
|
|
isym.st_value -= count;
|
1231 |
|
|
bfd_elf32_swap_symbol_out (abfd, &isym, esym, &dummy);
|
1232 |
|
|
}
|
1233 |
|
|
}
|
1234 |
|
|
|
1235 |
|
|
/* Now adjust the global symbols defined in this section. */
|
1236 |
|
|
symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
|
1237 |
|
|
- symtab_hdr->sh_info);
|
1238 |
|
|
sym_hashes = elf_sym_hashes (abfd);
|
1239 |
|
|
end_hashes = sym_hashes + symcount;
|
1240 |
|
|
for (; sym_hashes < end_hashes; sym_hashes++)
|
1241 |
|
|
{
|
1242 |
|
|
struct elf_link_hash_entry *sym_hash = *sym_hashes;
|
1243 |
|
|
if ((sym_hash->root.type == bfd_link_hash_defined
|
1244 |
|
|
|| sym_hash->root.type == bfd_link_hash_defweak)
|
1245 |
|
|
&& sym_hash->root.u.def.section == sec
|
1246 |
|
|
&& sym_hash->root.u.def.value > addr
|
1247 |
|
|
&& sym_hash->root.u.def.value < toaddr)
|
1248 |
|
|
{
|
1249 |
|
|
sym_hash->root.u.def.value -= count;
|
1250 |
|
|
}
|
1251 |
|
|
}
|
1252 |
|
|
}
|
1253 |
|
|
|
1254 |
|
|
/* Look through the relocs for a section during the first phase.
|
1255 |
|
|
Since we don't do .gots or .plts, we just need to consider the
|
1256 |
|
|
virtual table relocs for gc. */
|
1257 |
|
|
|
1258 |
|
|
static boolean
|
1259 |
|
|
elf32_m68hc11_check_relocs (abfd, info, sec, relocs)
|
1260 |
|
|
bfd * abfd;
|
1261 |
|
|
struct bfd_link_info * info;
|
1262 |
|
|
asection * sec;
|
1263 |
|
|
const Elf_Internal_Rela * relocs;
|
1264 |
|
|
{
|
1265 |
|
|
Elf_Internal_Shdr * symtab_hdr;
|
1266 |
|
|
struct elf_link_hash_entry ** sym_hashes;
|
1267 |
|
|
struct elf_link_hash_entry ** sym_hashes_end;
|
1268 |
|
|
const Elf_Internal_Rela * rel;
|
1269 |
|
|
const Elf_Internal_Rela * rel_end;
|
1270 |
|
|
|
1271 |
|
|
if (info->relocateable)
|
1272 |
|
|
return true;
|
1273 |
|
|
|
1274 |
|
|
symtab_hdr = & elf_tdata (abfd)->symtab_hdr;
|
1275 |
|
|
sym_hashes = elf_sym_hashes (abfd);
|
1276 |
|
|
sym_hashes_end = sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
|
1277 |
|
|
if (!elf_bad_symtab (abfd))
|
1278 |
|
|
sym_hashes_end -= symtab_hdr->sh_info;
|
1279 |
|
|
|
1280 |
|
|
rel_end = relocs + sec->reloc_count;
|
1281 |
|
|
|
1282 |
|
|
for (rel = relocs; rel < rel_end; rel++)
|
1283 |
|
|
{
|
1284 |
|
|
struct elf_link_hash_entry * h;
|
1285 |
|
|
unsigned long r_symndx;
|
1286 |
|
|
|
1287 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
1288 |
|
|
|
1289 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
1290 |
|
|
h = NULL;
|
1291 |
|
|
else
|
1292 |
|
|
h = sym_hashes [r_symndx - symtab_hdr->sh_info];
|
1293 |
|
|
|
1294 |
|
|
switch (ELF32_R_TYPE (rel->r_info))
|
1295 |
|
|
{
|
1296 |
|
|
/* This relocation describes the C++ object vtable hierarchy.
|
1297 |
|
|
Reconstruct it for later use during GC. */
|
1298 |
|
|
case R_M68HC11_GNU_VTINHERIT:
|
1299 |
|
|
if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
|
1300 |
|
|
return false;
|
1301 |
|
|
break;
|
1302 |
|
|
|
1303 |
|
|
/* This relocation describes which C++ vtable entries are actually
|
1304 |
|
|
used. Record for later use during GC. */
|
1305 |
|
|
case R_M68HC11_GNU_VTENTRY:
|
1306 |
|
|
if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
|
1307 |
|
|
return false;
|
1308 |
|
|
break;
|
1309 |
|
|
}
|
1310 |
|
|
}
|
1311 |
|
|
|
1312 |
|
|
return true;
|
1313 |
|
|
}
|
1314 |
|
|
|
1315 |
|
|
/* Relocate a 68hc11/68hc12 ELF section. */
|
1316 |
|
|
static boolean
|
1317 |
|
|
elf32_m68hc11_relocate_section (output_bfd, info, input_bfd, input_section,
|
1318 |
|
|
contents, relocs, local_syms, local_sections)
|
1319 |
|
|
bfd *output_bfd ATTRIBUTE_UNUSED;
|
1320 |
|
|
struct bfd_link_info *info;
|
1321 |
|
|
bfd *input_bfd;
|
1322 |
|
|
asection *input_section;
|
1323 |
|
|
bfd_byte *contents;
|
1324 |
|
|
Elf_Internal_Rela *relocs;
|
1325 |
|
|
Elf_Internal_Sym *local_syms;
|
1326 |
|
|
asection **local_sections;
|
1327 |
|
|
{
|
1328 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
1329 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
1330 |
|
|
Elf_Internal_Rela *rel, *relend;
|
1331 |
|
|
const char *name;
|
1332 |
|
|
|
1333 |
|
|
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
1334 |
|
|
sym_hashes = elf_sym_hashes (input_bfd);
|
1335 |
|
|
|
1336 |
|
|
rel = relocs;
|
1337 |
|
|
relend = relocs + input_section->reloc_count;
|
1338 |
|
|
for (; rel < relend; rel++)
|
1339 |
|
|
{
|
1340 |
|
|
int r_type;
|
1341 |
|
|
reloc_howto_type *howto;
|
1342 |
|
|
unsigned long r_symndx;
|
1343 |
|
|
Elf_Internal_Sym *sym;
|
1344 |
|
|
asection *sec;
|
1345 |
|
|
struct elf_link_hash_entry *h;
|
1346 |
|
|
bfd_vma relocation;
|
1347 |
|
|
bfd_reloc_status_type r;
|
1348 |
|
|
|
1349 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
1350 |
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
1351 |
|
|
|
1352 |
|
|
if (r_type == R_M68HC11_GNU_VTENTRY
|
1353 |
|
|
|| r_type == R_M68HC11_GNU_VTINHERIT )
|
1354 |
|
|
continue;
|
1355 |
|
|
|
1356 |
|
|
howto = elf_m68hc11_howto_table + r_type;
|
1357 |
|
|
|
1358 |
|
|
if (info->relocateable)
|
1359 |
|
|
{
|
1360 |
|
|
/* This is a relocateable link. We don't have to change
|
1361 |
|
|
anything, unless the reloc is against a section symbol,
|
1362 |
|
|
in which case we have to adjust according to where the
|
1363 |
|
|
section symbol winds up in the output section. */
|
1364 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
1365 |
|
|
{
|
1366 |
|
|
sym = local_syms + r_symndx;
|
1367 |
|
|
if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
|
1368 |
|
|
{
|
1369 |
|
|
sec = local_sections[r_symndx];
|
1370 |
|
|
rel->r_addend += sec->output_offset + sym->st_value;
|
1371 |
|
|
}
|
1372 |
|
|
}
|
1373 |
|
|
|
1374 |
|
|
continue;
|
1375 |
|
|
}
|
1376 |
|
|
|
1377 |
|
|
/* This is a final link. */
|
1378 |
|
|
h = NULL;
|
1379 |
|
|
sym = NULL;
|
1380 |
|
|
sec = NULL;
|
1381 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
1382 |
|
|
{
|
1383 |
|
|
sym = local_syms + r_symndx;
|
1384 |
|
|
sec = local_sections[r_symndx];
|
1385 |
|
|
relocation = (sec->output_section->vma
|
1386 |
|
|
+ sec->output_offset
|
1387 |
|
|
+ sym->st_value);
|
1388 |
|
|
}
|
1389 |
|
|
else
|
1390 |
|
|
{
|
1391 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
1392 |
|
|
while (h->root.type == bfd_link_hash_indirect
|
1393 |
|
|
|| h->root.type == bfd_link_hash_warning)
|
1394 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
1395 |
|
|
if (h->root.type == bfd_link_hash_defined
|
1396 |
|
|
|| h->root.type == bfd_link_hash_defweak)
|
1397 |
|
|
{
|
1398 |
|
|
sec = h->root.u.def.section;
|
1399 |
|
|
relocation = (h->root.u.def.value
|
1400 |
|
|
+ sec->output_section->vma
|
1401 |
|
|
+ sec->output_offset);
|
1402 |
|
|
}
|
1403 |
|
|
else if (h->root.type == bfd_link_hash_undefweak)
|
1404 |
|
|
relocation = 0;
|
1405 |
|
|
else
|
1406 |
|
|
{
|
1407 |
|
|
if (!((*info->callbacks->undefined_symbol)
|
1408 |
|
|
(info, h->root.root.string, input_bfd,
|
1409 |
|
|
input_section, rel->r_offset, true)))
|
1410 |
|
|
return false;
|
1411 |
|
|
relocation = 0;
|
1412 |
|
|
}
|
1413 |
|
|
}
|
1414 |
|
|
|
1415 |
|
|
if (h != NULL)
|
1416 |
|
|
name = h->root.root.string;
|
1417 |
|
|
else
|
1418 |
|
|
{
|
1419 |
|
|
name = (bfd_elf_string_from_elf_section
|
1420 |
|
|
(input_bfd, symtab_hdr->sh_link, sym->st_name));
|
1421 |
|
|
if (name == NULL || *name == '\0')
|
1422 |
|
|
name = bfd_section_name (input_bfd, sec);
|
1423 |
|
|
}
|
1424 |
|
|
|
1425 |
|
|
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
|
1426 |
|
|
contents, rel->r_offset,
|
1427 |
|
|
relocation, rel->r_addend);
|
1428 |
|
|
|
1429 |
|
|
if (r != bfd_reloc_ok)
|
1430 |
|
|
{
|
1431 |
|
|
const char * msg = (const char *) 0;
|
1432 |
|
|
|
1433 |
|
|
switch (r)
|
1434 |
|
|
{
|
1435 |
|
|
case bfd_reloc_overflow:
|
1436 |
|
|
if (!((*info->callbacks->reloc_overflow)
|
1437 |
|
|
(info, name, howto->name, (bfd_vma) 0,
|
1438 |
|
|
input_bfd, input_section, rel->r_offset)))
|
1439 |
|
|
return false;
|
1440 |
|
|
break;
|
1441 |
|
|
|
1442 |
|
|
case bfd_reloc_undefined:
|
1443 |
|
|
if (!((*info->callbacks->undefined_symbol)
|
1444 |
|
|
(info, name, input_bfd, input_section,
|
1445 |
|
|
rel->r_offset, true)))
|
1446 |
|
|
return false;
|
1447 |
|
|
break;
|
1448 |
|
|
|
1449 |
|
|
case bfd_reloc_outofrange:
|
1450 |
|
|
msg = _ ("internal error: out of range error");
|
1451 |
|
|
goto common_error;
|
1452 |
|
|
|
1453 |
|
|
case bfd_reloc_notsupported:
|
1454 |
|
|
msg = _ ("internal error: unsupported relocation error");
|
1455 |
|
|
goto common_error;
|
1456 |
|
|
|
1457 |
|
|
case bfd_reloc_dangerous:
|
1458 |
|
|
msg = _ ("internal error: dangerous error");
|
1459 |
|
|
goto common_error;
|
1460 |
|
|
|
1461 |
|
|
default:
|
1462 |
|
|
msg = _ ("internal error: unknown error");
|
1463 |
|
|
/* fall through */
|
1464 |
|
|
|
1465 |
|
|
common_error:
|
1466 |
|
|
if (!((*info->callbacks->warning)
|
1467 |
|
|
(info, msg, name, input_bfd, input_section,
|
1468 |
|
|
rel->r_offset)))
|
1469 |
|
|
return false;
|
1470 |
|
|
break;
|
1471 |
|
|
}
|
1472 |
|
|
}
|
1473 |
|
|
}
|
1474 |
|
|
|
1475 |
|
|
return true;
|
1476 |
|
|
}
|
1477 |
|
|
|
1478 |
|
|
|
1479 |
|
|
|
1480 |
|
|
/* Set and control ELF flags in ELF header. */
|
1481 |
|
|
|
1482 |
|
|
boolean
|
1483 |
|
|
_bfd_m68hc11_elf_set_private_flags (abfd, flags)
|
1484 |
|
|
bfd *abfd;
|
1485 |
|
|
flagword flags;
|
1486 |
|
|
{
|
1487 |
|
|
BFD_ASSERT (!elf_flags_init (abfd)
|
1488 |
|
|
|| elf_elfheader (abfd)->e_flags == flags);
|
1489 |
|
|
|
1490 |
|
|
elf_elfheader (abfd)->e_flags = flags;
|
1491 |
|
|
elf_flags_init (abfd) = true;
|
1492 |
|
|
return true;
|
1493 |
|
|
}
|
1494 |
|
|
|
1495 |
|
|
/* Merge backend specific data from an object file to the output
|
1496 |
|
|
object file when linking. */
|
1497 |
|
|
|
1498 |
|
|
boolean
|
1499 |
|
|
_bfd_m68hc11_elf_merge_private_bfd_data (ibfd, obfd)
|
1500 |
|
|
bfd *ibfd;
|
1501 |
|
|
bfd *obfd;
|
1502 |
|
|
{
|
1503 |
|
|
flagword old_flags;
|
1504 |
|
|
flagword new_flags;
|
1505 |
|
|
boolean ok = true;
|
1506 |
|
|
|
1507 |
|
|
/* Check if we have the same endianess */
|
1508 |
|
|
if (_bfd_generic_verify_endian_match (ibfd, obfd) == false)
|
1509 |
|
|
return false;
|
1510 |
|
|
|
1511 |
|
|
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|
1512 |
|
|
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
|
1513 |
|
|
return true;
|
1514 |
|
|
|
1515 |
|
|
new_flags = elf_elfheader (ibfd)->e_flags;
|
1516 |
|
|
elf_elfheader (obfd)->e_flags |= new_flags & EF_M68HC11_ABI;
|
1517 |
|
|
old_flags = elf_elfheader (obfd)->e_flags;
|
1518 |
|
|
|
1519 |
|
|
if (! elf_flags_init (obfd))
|
1520 |
|
|
{
|
1521 |
|
|
elf_flags_init (obfd) = true;
|
1522 |
|
|
elf_elfheader (obfd)->e_flags = new_flags;
|
1523 |
|
|
elf_elfheader (obfd)->e_ident[EI_CLASS]
|
1524 |
|
|
= elf_elfheader (ibfd)->e_ident[EI_CLASS];
|
1525 |
|
|
|
1526 |
|
|
if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
|
1527 |
|
|
&& bfd_get_arch_info (obfd)->the_default)
|
1528 |
|
|
{
|
1529 |
|
|
if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
|
1530 |
|
|
bfd_get_mach (ibfd)))
|
1531 |
|
|
return false;
|
1532 |
|
|
}
|
1533 |
|
|
|
1534 |
|
|
return true;
|
1535 |
|
|
}
|
1536 |
|
|
|
1537 |
|
|
/* Check ABI compatibility. */
|
1538 |
|
|
if ((new_flags & E_M68HC11_I32) != (old_flags & E_M68HC11_I32))
|
1539 |
|
|
{
|
1540 |
|
|
(*_bfd_error_handler)
|
1541 |
|
|
(_("%s: linking files compiled for 16-bit integers (-mshort) "
|
1542 |
|
|
"and others for 32-bit integers"),
|
1543 |
|
|
bfd_archive_filename (ibfd));
|
1544 |
|
|
ok = false;
|
1545 |
|
|
}
|
1546 |
|
|
if ((new_flags & E_M68HC11_F64) != (old_flags & E_M68HC11_F64))
|
1547 |
|
|
{
|
1548 |
|
|
(*_bfd_error_handler)
|
1549 |
|
|
(_("%s: linking files compiled for 32-bit double (-fshort-double) "
|
1550 |
|
|
"and others for 64-bit double"),
|
1551 |
|
|
bfd_archive_filename (ibfd));
|
1552 |
|
|
ok = false;
|
1553 |
|
|
}
|
1554 |
|
|
new_flags &= ~EF_M68HC11_ABI;
|
1555 |
|
|
old_flags &= ~EF_M68HC11_ABI;
|
1556 |
|
|
|
1557 |
|
|
/* Warn about any other mismatches */
|
1558 |
|
|
if (new_flags != old_flags)
|
1559 |
|
|
{
|
1560 |
|
|
(*_bfd_error_handler)
|
1561 |
|
|
(_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
|
1562 |
|
|
bfd_archive_filename (ibfd), (unsigned long) new_flags,
|
1563 |
|
|
(unsigned long) old_flags);
|
1564 |
|
|
ok = false;
|
1565 |
|
|
}
|
1566 |
|
|
|
1567 |
|
|
if (! ok)
|
1568 |
|
|
{
|
1569 |
|
|
bfd_set_error (bfd_error_bad_value);
|
1570 |
|
|
return false;
|
1571 |
|
|
}
|
1572 |
|
|
|
1573 |
|
|
return true;
|
1574 |
|
|
}
|
1575 |
|
|
|
1576 |
|
|
boolean
|
1577 |
|
|
_bfd_m68hc11_elf_print_private_bfd_data (abfd, ptr)
|
1578 |
|
|
bfd *abfd;
|
1579 |
|
|
PTR ptr;
|
1580 |
|
|
{
|
1581 |
|
|
FILE *file = (FILE *) ptr;
|
1582 |
|
|
|
1583 |
|
|
BFD_ASSERT (abfd != NULL && ptr != NULL);
|
1584 |
|
|
|
1585 |
|
|
/* Print normal ELF private data. */
|
1586 |
|
|
_bfd_elf_print_private_bfd_data (abfd, ptr);
|
1587 |
|
|
|
1588 |
|
|
/* xgettext:c-format */
|
1589 |
|
|
fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
|
1590 |
|
|
|
1591 |
|
|
if (elf_elfheader (abfd)->e_flags & E_M68HC11_I32)
|
1592 |
|
|
fprintf (file, _("[abi=32-bit int,"));
|
1593 |
|
|
else
|
1594 |
|
|
fprintf (file, _("[abi=16-bit int,"));
|
1595 |
|
|
|
1596 |
|
|
if (elf_elfheader (abfd)->e_flags & E_M68HC11_F64)
|
1597 |
|
|
fprintf (file, _(" 64-bit double]"));
|
1598 |
|
|
else
|
1599 |
|
|
fprintf (file, _(" 32-bit double]"));
|
1600 |
|
|
|
1601 |
|
|
if (elf_elfheader (abfd)->e_flags & E_M68HC12_BANKS)
|
1602 |
|
|
fprintf (file, _(" [memory=bank-model]"));
|
1603 |
|
|
else
|
1604 |
|
|
fprintf (file, _(" [memory=flat]"));
|
1605 |
|
|
|
1606 |
|
|
fputc ('\n', file);
|
1607 |
|
|
|
1608 |
|
|
return true;
|
1609 |
|
|
}
|
1610 |
|
|
|
1611 |
|
|
/* Below is the only difference between elf32-m68hc12.c and elf32-m68hc11.c.
|
1612 |
|
|
The Motorola spec says to use a different Elf machine code. */
|
1613 |
|
|
#define ELF_ARCH bfd_arch_m68hc11
|
1614 |
|
|
#define ELF_MACHINE_CODE EM_68HC11
|
1615 |
|
|
#define ELF_MAXPAGESIZE 0x1000
|
1616 |
|
|
|
1617 |
|
|
#define TARGET_BIG_SYM bfd_elf32_m68hc11_vec
|
1618 |
|
|
#define TARGET_BIG_NAME "elf32-m68hc11"
|
1619 |
|
|
|
1620 |
|
|
#define elf_info_to_howto 0
|
1621 |
|
|
#define elf_info_to_howto_rel m68hc11_info_to_howto_rel
|
1622 |
|
|
#define bfd_elf32_bfd_relax_section m68hc11_elf_relax_section
|
1623 |
|
|
#define elf_backend_gc_mark_hook elf32_m68hc11_gc_mark_hook
|
1624 |
|
|
#define elf_backend_gc_sweep_hook elf32_m68hc11_gc_sweep_hook
|
1625 |
|
|
#define elf_backend_check_relocs elf32_m68hc11_check_relocs
|
1626 |
|
|
#define elf_backend_relocate_section elf32_m68hc11_relocate_section
|
1627 |
|
|
#define elf_backend_object_p 0
|
1628 |
|
|
#define elf_backend_final_write_processing 0
|
1629 |
|
|
#define elf_backend_can_gc_sections 1
|
1630 |
|
|
#define bfd_elf32_bfd_merge_private_bfd_data \
|
1631 |
|
|
_bfd_m68hc11_elf_merge_private_bfd_data
|
1632 |
|
|
#define bfd_elf32_bfd_set_private_flags _bfd_m68hc11_elf_set_private_flags
|
1633 |
|
|
#define bfd_elf32_bfd_print_private_bfd_data \
|
1634 |
|
|
_bfd_m68hc11_elf_print_private_bfd_data
|
1635 |
|
|
|
1636 |
|
|
#include "elf32-target.h"
|