mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-21 04:42:53 +08:00
0a1b45a20e
* sysdep.h: POISON_BFD_BOOLEAN: Define. * aix5ppc-core.c, * aout-cris.c, * aout-ns32k.c, * aout-target.h, * aoutx.h, * arc-got.h, * archive.c, * archive64.c, * archures.c, * bfd-in.h, * bfd.c, * bfdwin.c, * binary.c, * cache.c, * coff-alpha.c, * coff-arm.c, * coff-arm.h, * coff-bfd.c, * coff-bfd.h, * coff-go32.c, * coff-i386.c, * coff-ia64.c, * coff-mcore.c, * coff-mips.c, * coff-rs6000.c, * coff-sh.c, * coff-stgo32.c, * coff-tic30.c, * coff-tic4x.c, * coff-tic54x.c, * coff-x86_64.c, * coff-z80.c, * coff-z8k.c, * coff64-rs6000.c, * coffcode.h, * coffgen.c, * cofflink.c, * compress.c, * corefile.c, * cpu-aarch64.c, * cpu-aarch64.h, * cpu-alpha.c, * cpu-arc.c, * cpu-arm.c, * cpu-arm.h, * cpu-avr.c, * cpu-bfin.c, * cpu-bpf.c, * cpu-cr16.c, * cpu-cris.c, * cpu-crx.c, * cpu-csky.c, * cpu-d10v.c, * cpu-d30v.c, * cpu-dlx.c, * cpu-epiphany.c, * cpu-fr30.c, * cpu-frv.c, * cpu-ft32.c, * cpu-h8300.c, * cpu-hppa.c, * cpu-i386.c, * cpu-ia64.c, * cpu-iamcu.c, * cpu-ip2k.c, * cpu-iq2000.c, * cpu-k1om.c, * cpu-l1om.c, * cpu-lm32.c, * cpu-m10200.c, * cpu-m10300.c, * cpu-m32c.c, * cpu-m32r.c, * cpu-m68hc11.c, * cpu-m68hc12.c, * cpu-m68k.c, * cpu-m9s12x.c, * cpu-m9s12xg.c, * cpu-mcore.c, * cpu-mep.c, * cpu-metag.c, * cpu-microblaze.c, * cpu-mips.c, * cpu-mmix.c, * cpu-moxie.c, * cpu-msp430.c, * cpu-mt.c, * cpu-nds32.c, * cpu-nfp.c, * cpu-nios2.c, * cpu-ns32k.c, * cpu-or1k.c, * cpu-pdp11.c, * cpu-pj.c, * cpu-powerpc.c, * cpu-pru.c, * cpu-riscv.c, * cpu-rl78.c, * cpu-rs6000.c, * cpu-rx.c, * cpu-s12z.c, * cpu-s390.c, * cpu-score.c, * cpu-sh.c, * cpu-sparc.c, * cpu-spu.c, * cpu-tic30.c, * cpu-tic4x.c, * cpu-tic54x.c, * cpu-tic6x.c, * cpu-tilegx.c, * cpu-tilepro.c, * cpu-v850.c, * cpu-v850_rh850.c, * cpu-vax.c, * cpu-visium.c, * cpu-wasm32.c, * cpu-xc16x.c, * cpu-xgate.c, * cpu-xstormy16.c, * cpu-xtensa.c, * cpu-z80.c, * cpu-z8k.c, * dwarf1.c, * dwarf2.c, * ecoff-bfd.h, * ecoff.c, * ecofflink.c, * elf-attrs.c, * elf-bfd.h, * elf-eh-frame.c, * elf-hppa.h, * elf-ifunc.c, * elf-m10200.c, * elf-m10300.c, * elf-nacl.c, * elf-nacl.h, * elf-properties.c, * elf-s390-common.c, * elf-s390.h, * elf-strtab.c, * elf-vxworks.c, * elf-vxworks.h, * elf.c, * elf32-am33lin.c, * elf32-arc.c, * elf32-arm.c, * elf32-arm.h, * elf32-avr.c, * elf32-avr.h, * elf32-bfin.c, * elf32-bfin.h, * elf32-cr16.c, * elf32-cr16.h, * elf32-cris.c, * elf32-crx.c, * elf32-csky.c, * elf32-csky.h, * elf32-d10v.c, * elf32-d30v.c, * elf32-dlx.c, * elf32-epiphany.c, * elf32-fr30.c, * elf32-frv.c, * elf32-ft32.c, * elf32-gen.c, * elf32-h8300.c, * elf32-hppa.c, * elf32-hppa.h, * elf32-i386.c, * elf32-ip2k.c, * elf32-iq2000.c, * elf32-lm32.c, * elf32-m32c.c, * elf32-m32r.c, * elf32-m68hc11.c, * elf32-m68hc12.c, * elf32-m68hc1x.c, * elf32-m68hc1x.h, * elf32-m68k.c, * elf32-m68k.h, * elf32-mcore.c, * elf32-mep.c, * elf32-metag.c, * elf32-metag.h, * elf32-microblaze.c, * elf32-mips.c, * elf32-moxie.c, * elf32-msp430.c, * elf32-mt.c, * elf32-nds32.c, * elf32-nios2.c, * elf32-nios2.h, * elf32-or1k.c, * elf32-pj.c, * elf32-ppc.c, * elf32-ppc.h, * elf32-pru.c, * elf32-rl78.c, * elf32-rx.c, * elf32-s12z.c, * elf32-s390.c, * elf32-score.c, * elf32-score.h, * elf32-score7.c, * elf32-sh-relocs.h, * elf32-sh.c, * elf32-sparc.c, * elf32-spu.c, * elf32-spu.h, * elf32-tic6x.c, * elf32-tic6x.h, * elf32-tilegx.c, * elf32-tilepro.c, * elf32-v850.c, * elf32-v850.h, * elf32-vax.c, * elf32-visium.c, * elf32-wasm32.c, * elf32-xc16x.c, * elf32-xgate.c, * elf32-xstormy16.c, * elf32-xtensa.c, * elf32-z80.c, * elf64-alpha.c, * elf64-bpf.c, * elf64-gen.c, * elf64-hppa.c, * elf64-ia64-vms.c, * elf64-mips.c, * elf64-mmix.c, * elf64-nfp.c, * elf64-ppc.c, * elf64-ppc.h, * elf64-s390.c, * elf64-sparc.c, * elf64-tilegx.c, * elf64-x86-64.c, * elfcode.h, * elfcore.h, * elflink.c, * elfn32-mips.c, * elfnn-aarch64.c, * elfnn-ia64.c, * elfnn-riscv.c, * elfxx-aarch64.c, * elfxx-aarch64.h, * elfxx-ia64.c, * elfxx-ia64.h, * elfxx-mips.c, * elfxx-mips.h, * elfxx-riscv.c, * elfxx-riscv.h, * elfxx-sparc.c, * elfxx-sparc.h, * elfxx-target.h, * elfxx-tilegx.c, * elfxx-tilegx.h, * elfxx-x86.c, * elfxx-x86.h, * format.c, * genlink.h, * hash.c, * i386aout.c, * i386lynx.c, * i386msdos.c, * ihex.c, * libaout.h, * libbfd-in.h, * libbfd.c, * libcoff-in.h, * libecoff.h, * libpei.h, * libxcoff.h, * linker.c, * mach-o-aarch64.c, * mach-o-arm.c, * mach-o-i386.c, * mach-o-x86-64.c, * mach-o.c, * mach-o.h, * merge.c, * mmo.c, * netbsd.h, * opncls.c, * pc532-mach.c, * pdp11.c, * pe-arm.c, * pe-i386.c, * pe-mcore.c, * pe-sh.c, * pe-x86_64.c, * peXXigen.c, * pef.c, * pei-arm.c, * pei-i386.c, * pei-ia64.c, * pei-mcore.c, * pei-sh.c, * pei-x86_64.c, * peicode.h, * plugin.c, * plugin.h, * ppcboot.c, * reloc.c, * reloc16.c, * rs6000-core.c, * section.c, * simple.c, * som.c, * som.h, * srec.c, * stabs.c, * syms.c, * targets.c, * tekhex.c, * verilog.c, * vms-alpha.c, * vms-lib.c, * vms-misc.c, * vms.h, * wasm-module.c, * xcofflink.c, * xcofflink.h, * xsym.c, * xsym.h: Replace bfd_boolean with bool, FALSE with false, and TRUE with true throughout. * bfd-in2.h: Regenerate. * libbfd.h: Regenerate. * libcoff.h: Regenerate.
778 lines
22 KiB
C
778 lines
22 KiB
C
/* BFD back-end for Intel 386 COFF files.
|
|
Copyright (C) 1990-2021 Free Software Foundation, Inc.
|
|
Written by Cygnus Support.
|
|
|
|
This file is part of BFD, the Binary File Descriptor library.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
|
MA 02110-1301, USA. */
|
|
|
|
#include "sysdep.h"
|
|
#include "bfd.h"
|
|
#include "libbfd.h"
|
|
|
|
#include "coff/i386.h"
|
|
|
|
#include "coff/internal.h"
|
|
|
|
#ifdef COFF_WITH_PE
|
|
#include "coff/pe.h"
|
|
#endif
|
|
|
|
#ifndef bfd_pe_print_pdata
|
|
#define bfd_pe_print_pdata NULL
|
|
#endif
|
|
|
|
#include "libcoff.h"
|
|
|
|
/* All users of this file have bfd_octets_per_byte (abfd, sec) == 1. */
|
|
#define OCTETS_PER_BYTE(ABFD, SEC) 1
|
|
|
|
static reloc_howto_type *coff_i386_rtype_to_howto
|
|
(bfd *, asection *, struct internal_reloc *,
|
|
struct coff_link_hash_entry *, struct internal_syment *,
|
|
bfd_vma *);
|
|
static reloc_howto_type *coff_i386_reloc_type_lookup
|
|
(bfd *, bfd_reloc_code_real_type);
|
|
|
|
#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2)
|
|
/* The page size is a guess based on ELF. */
|
|
|
|
#define COFF_PAGE_SIZE 0x1000
|
|
|
|
/* For some reason when using i386 COFF the value stored in the .text
|
|
section for a reference to a common symbol is the value itself plus
|
|
any desired offset. Ian Taylor, Cygnus Support. */
|
|
|
|
/* If we are producing relocatable output, we need to do some
|
|
adjustments to the object file that are not done by the
|
|
bfd_perform_relocation function. This function is called by every
|
|
reloc type to make any required adjustments. */
|
|
|
|
static bfd_reloc_status_type
|
|
coff_i386_reloc (bfd *abfd,
|
|
arelent *reloc_entry,
|
|
asymbol *symbol,
|
|
void * data,
|
|
asection *input_section,
|
|
bfd *output_bfd,
|
|
char **error_message ATTRIBUTE_UNUSED)
|
|
{
|
|
symvalue diff;
|
|
|
|
#ifndef COFF_WITH_PE
|
|
if (output_bfd == (bfd *) NULL)
|
|
return bfd_reloc_continue;
|
|
#endif
|
|
|
|
if (bfd_is_com_section (symbol->section))
|
|
{
|
|
#ifndef COFF_WITH_PE
|
|
/* We are relocating a common symbol. The current value in the
|
|
object file is ORIG + OFFSET, where ORIG is the value of the
|
|
common symbol as seen by the object file when it was compiled
|
|
(this may be zero if the symbol was undefined) and OFFSET is
|
|
the offset into the common symbol (normally zero, but may be
|
|
non-zero when referring to a field in a common structure).
|
|
ORIG is the negative of reloc_entry->addend, which is set by
|
|
the CALC_ADDEND macro below. We want to replace the value in
|
|
the object file with NEW + OFFSET, where NEW is the value of
|
|
the common symbol which we are going to put in the final
|
|
object file. NEW is symbol->value. */
|
|
diff = symbol->value + reloc_entry->addend;
|
|
#else
|
|
/* In PE mode, we do not offset the common symbol. */
|
|
diff = reloc_entry->addend;
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
/* For some reason bfd_perform_relocation always effectively
|
|
ignores the addend for a COFF target when producing
|
|
relocatable output. This seems to be always wrong for 386
|
|
COFF, so we handle the addend here instead. */
|
|
#ifdef COFF_WITH_PE
|
|
if (output_bfd == (bfd *) NULL)
|
|
{
|
|
reloc_howto_type *howto = reloc_entry->howto;
|
|
|
|
/* Although PC relative relocations are very similar between
|
|
PE and non-PE formats, but they are off by 1 << howto->size
|
|
bytes. For the external relocation, PE is very different
|
|
from others. See md_apply_fix3 () in gas/config/tc-i386.c.
|
|
When we link PE and non-PE object files together to
|
|
generate a non-PE executable, we have to compensate it
|
|
here. */
|
|
if (howto->pc_relative && howto->pcrel_offset)
|
|
diff = -(1 << howto->size);
|
|
else if (symbol->flags & BSF_WEAK)
|
|
diff = reloc_entry->addend - symbol->value;
|
|
else
|
|
diff = -reloc_entry->addend;
|
|
}
|
|
else
|
|
#endif
|
|
diff = reloc_entry->addend;
|
|
}
|
|
|
|
#ifdef COFF_WITH_PE
|
|
/* FIXME: How should this case be handled? */
|
|
if (reloc_entry->howto->type == R_IMAGEBASE
|
|
&& output_bfd != NULL
|
|
&& bfd_get_flavour(output_bfd) == bfd_target_coff_flavour)
|
|
diff -= pe_data (output_bfd)->pe_opthdr.ImageBase;
|
|
#endif
|
|
|
|
#define DOIT(x) \
|
|
x = ((x & ~howto->dst_mask) | (((x & howto->src_mask) + diff) & howto->dst_mask))
|
|
|
|
if (diff != 0)
|
|
{
|
|
reloc_howto_type *howto = reloc_entry->howto;
|
|
bfd_size_type octets = (reloc_entry->address
|
|
* OCTETS_PER_BYTE (abfd, input_section));
|
|
unsigned char *addr = (unsigned char *) data + octets;
|
|
|
|
if (!bfd_reloc_offset_in_range (howto, abfd, input_section, octets))
|
|
return bfd_reloc_outofrange;
|
|
|
|
switch (howto->size)
|
|
{
|
|
case 0:
|
|
{
|
|
char x = bfd_get_8 (abfd, addr);
|
|
DOIT (x);
|
|
bfd_put_8 (abfd, x, addr);
|
|
}
|
|
break;
|
|
|
|
case 1:
|
|
{
|
|
short x = bfd_get_16 (abfd, addr);
|
|
DOIT (x);
|
|
bfd_put_16 (abfd, (bfd_vma) x, addr);
|
|
}
|
|
break;
|
|
|
|
case 2:
|
|
{
|
|
long x = bfd_get_32 (abfd, addr);
|
|
DOIT (x);
|
|
bfd_put_32 (abfd, (bfd_vma) x, addr);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
abort ();
|
|
}
|
|
}
|
|
|
|
/* Now let bfd_perform_relocation finish everything up. */
|
|
return bfd_reloc_continue;
|
|
}
|
|
|
|
#ifdef COFF_WITH_PE
|
|
/* Return TRUE if this relocation should appear in the output .reloc
|
|
section. */
|
|
|
|
static bool
|
|
in_reloc_p (bfd *abfd ATTRIBUTE_UNUSED, reloc_howto_type *howto)
|
|
{
|
|
return ! howto->pc_relative && howto->type != R_IMAGEBASE
|
|
&& howto->type != R_SECREL32;
|
|
}
|
|
#endif /* COFF_WITH_PE */
|
|
|
|
#ifndef PCRELOFFSET
|
|
#define PCRELOFFSET false
|
|
#endif
|
|
|
|
static reloc_howto_type howto_table[] =
|
|
{
|
|
EMPTY_HOWTO (0),
|
|
EMPTY_HOWTO (1),
|
|
EMPTY_HOWTO (2),
|
|
EMPTY_HOWTO (3),
|
|
EMPTY_HOWTO (4),
|
|
EMPTY_HOWTO (5),
|
|
HOWTO (R_DIR32, /* type */
|
|
0, /* rightshift */
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
|
coff_i386_reloc, /* special_function */
|
|
"dir32", /* name */
|
|
true, /* partial_inplace */
|
|
0xffffffff, /* src_mask */
|
|
0xffffffff, /* dst_mask */
|
|
true), /* pcrel_offset */
|
|
/* PE IMAGE_REL_I386_DIR32NB relocation (7). */
|
|
HOWTO (R_IMAGEBASE, /* type */
|
|
0, /* rightshift */
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
|
coff_i386_reloc, /* special_function */
|
|
"rva32", /* name */
|
|
true, /* partial_inplace */
|
|
0xffffffff, /* src_mask */
|
|
0xffffffff, /* dst_mask */
|
|
false), /* pcrel_offset */
|
|
EMPTY_HOWTO (010),
|
|
EMPTY_HOWTO (011),
|
|
EMPTY_HOWTO (012),
|
|
#ifdef COFF_WITH_PE
|
|
/* 32-bit longword section relative relocation (013). */
|
|
HOWTO (R_SECREL32, /* type */
|
|
0, /* rightshift */
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
|
coff_i386_reloc, /* special_function */
|
|
"secrel32", /* name */
|
|
true, /* partial_inplace */
|
|
0xffffffff, /* src_mask */
|
|
0xffffffff, /* dst_mask */
|
|
true), /* pcrel_offset */
|
|
#else
|
|
EMPTY_HOWTO (013),
|
|
#endif
|
|
EMPTY_HOWTO (014),
|
|
EMPTY_HOWTO (015),
|
|
EMPTY_HOWTO (016),
|
|
/* Byte relocation (017). */
|
|
HOWTO (R_RELBYTE, /* type */
|
|
0, /* rightshift */
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
|
8, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
|
coff_i386_reloc, /* special_function */
|
|
"8", /* name */
|
|
true, /* partial_inplace */
|
|
0x000000ff, /* src_mask */
|
|
0x000000ff, /* dst_mask */
|
|
PCRELOFFSET), /* pcrel_offset */
|
|
/* 16-bit word relocation (020). */
|
|
HOWTO (R_RELWORD, /* type */
|
|
0, /* rightshift */
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
|
16, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
|
coff_i386_reloc, /* special_function */
|
|
"16", /* name */
|
|
true, /* partial_inplace */
|
|
0x0000ffff, /* src_mask */
|
|
0x0000ffff, /* dst_mask */
|
|
PCRELOFFSET), /* pcrel_offset */
|
|
/* 32-bit longword relocation (021). */
|
|
HOWTO (R_RELLONG, /* type */
|
|
0, /* rightshift */
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
32, /* bitsize */
|
|
false, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
|
coff_i386_reloc, /* special_function */
|
|
"32", /* name */
|
|
true, /* partial_inplace */
|
|
0xffffffff, /* src_mask */
|
|
0xffffffff, /* dst_mask */
|
|
PCRELOFFSET), /* pcrel_offset */
|
|
/* Byte PC relative relocation (022). */
|
|
HOWTO (R_PCRBYTE, /* type */
|
|
0, /* rightshift */
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
|
8, /* bitsize */
|
|
true, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
coff_i386_reloc, /* special_function */
|
|
"DISP8", /* name */
|
|
true, /* partial_inplace */
|
|
0x000000ff, /* src_mask */
|
|
0x000000ff, /* dst_mask */
|
|
PCRELOFFSET), /* pcrel_offset */
|
|
/* 16-bit word PC relative relocation (023). */
|
|
HOWTO (R_PCRWORD, /* type */
|
|
0, /* rightshift */
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
|
16, /* bitsize */
|
|
true, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
coff_i386_reloc, /* special_function */
|
|
"DISP16", /* name */
|
|
true, /* partial_inplace */
|
|
0x0000ffff, /* src_mask */
|
|
0x0000ffff, /* dst_mask */
|
|
PCRELOFFSET), /* pcrel_offset */
|
|
/* 32-bit longword PC relative relocation (024). */
|
|
HOWTO (R_PCRLONG, /* type */
|
|
0, /* rightshift */
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
32, /* bitsize */
|
|
true, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
coff_i386_reloc, /* special_function */
|
|
"DISP32", /* name */
|
|
true, /* partial_inplace */
|
|
0xffffffff, /* src_mask */
|
|
0xffffffff, /* dst_mask */
|
|
PCRELOFFSET) /* pcrel_offset */
|
|
};
|
|
|
|
#define NUM_HOWTOS (sizeof (howto_table) / sizeof (howto_table[0]))
|
|
|
|
/* Turn a howto into a reloc nunmber */
|
|
|
|
#define SELECT_RELOC(x,howto) { x.r_type = howto->type; }
|
|
#define BADMAG(x) I386BADMAG(x)
|
|
#define I386 1 /* Customize coffcode.h */
|
|
|
|
#define RTYPE2HOWTO(cache_ptr, dst) \
|
|
((cache_ptr)->howto = \
|
|
((dst)->r_type < NUM_HOWTOS \
|
|
? howto_table + (dst)->r_type \
|
|
: NULL))
|
|
|
|
/* For 386 COFF a STYP_NOLOAD | STYP_BSS section is part of a shared
|
|
library. On some other COFF targets STYP_BSS is normally
|
|
STYP_NOLOAD. */
|
|
#define BSS_NOLOAD_IS_SHARED_LIBRARY
|
|
|
|
/* Compute the addend of a reloc. If the reloc is to a common symbol,
|
|
the object file contains the value of the common symbol. By the
|
|
time this is called, the linker may be using a different symbol
|
|
from a different object file with a different value. Therefore, we
|
|
hack wildly to locate the original symbol from this file so that we
|
|
can make the correct adjustment. This macro sets coffsym to the
|
|
symbol from the original file, and uses it to set the addend value
|
|
correctly. If this is not a common symbol, the usual addend
|
|
calculation is done, except that an additional tweak is needed for
|
|
PC relative relocs.
|
|
FIXME: This macro refers to symbols and asect; these are from the
|
|
calling function, not the macro arguments. */
|
|
|
|
#define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
|
|
{ \
|
|
coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
|
|
if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
|
|
coffsym = (obj_symbols (abfd) \
|
|
+ (cache_ptr->sym_ptr_ptr - symbols)); \
|
|
else if (ptr) \
|
|
coffsym = coff_symbol_from (ptr); \
|
|
if (coffsym != (coff_symbol_type *) NULL \
|
|
&& coffsym->native->u.syment.n_scnum == 0) \
|
|
cache_ptr->addend = - coffsym->native->u.syment.n_value; \
|
|
else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
|
|
&& ptr->section != (asection *) NULL) \
|
|
cache_ptr->addend = - (ptr->section->vma + ptr->value); \
|
|
else \
|
|
cache_ptr->addend = 0; \
|
|
if (ptr && reloc.r_type < NUM_HOWTOS \
|
|
&& howto_table[reloc.r_type].pc_relative) \
|
|
cache_ptr->addend += asect->vma; \
|
|
}
|
|
|
|
/* We use the special COFF backend linker. For normal i386 COFF, we
|
|
can use the generic relocate_section routine. For PE, we need our
|
|
own routine. */
|
|
|
|
#ifndef COFF_WITH_PE
|
|
|
|
#define coff_relocate_section _bfd_coff_generic_relocate_section
|
|
|
|
#else /* COFF_WITH_PE */
|
|
|
|
/* The PE relocate section routine. The only difference between this
|
|
and the regular routine is that we don't want to do anything for a
|
|
relocatable link. */
|
|
|
|
static bool
|
|
coff_pe_i386_relocate_section (bfd *output_bfd,
|
|
struct bfd_link_info *info,
|
|
bfd *input_bfd,
|
|
asection *input_section,
|
|
bfd_byte *contents,
|
|
struct internal_reloc *relocs,
|
|
struct internal_syment *syms,
|
|
asection **sections)
|
|
{
|
|
if (bfd_link_relocatable (info))
|
|
return true;
|
|
|
|
return _bfd_coff_generic_relocate_section (output_bfd, info, input_bfd,
|
|
input_section, contents,
|
|
relocs, syms, sections);
|
|
}
|
|
|
|
#define coff_relocate_section coff_pe_i386_relocate_section
|
|
|
|
#endif /* COFF_WITH_PE */
|
|
|
|
/* Convert an rtype to howto for the COFF backend linker. */
|
|
|
|
static reloc_howto_type *
|
|
coff_i386_rtype_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
|
|
asection *sec,
|
|
struct internal_reloc *rel,
|
|
struct coff_link_hash_entry *h,
|
|
struct internal_syment *sym,
|
|
bfd_vma *addendp)
|
|
{
|
|
reloc_howto_type *howto;
|
|
|
|
if (rel->r_type >= NUM_HOWTOS)
|
|
{
|
|
bfd_set_error (bfd_error_bad_value);
|
|
return NULL;
|
|
}
|
|
|
|
howto = howto_table + rel->r_type;
|
|
|
|
#ifdef COFF_WITH_PE
|
|
/* Cancel out code in _bfd_coff_generic_relocate_section. */
|
|
*addendp = 0;
|
|
#endif
|
|
|
|
if (howto->pc_relative)
|
|
*addendp += sec->vma;
|
|
|
|
if (sym != NULL && sym->n_scnum == 0 && sym->n_value != 0)
|
|
{
|
|
/* This is a common symbol. The section contents include the
|
|
size (sym->n_value) as an addend. The relocate_section
|
|
function will be adding in the final value of the symbol. We
|
|
need to subtract out the current size in order to get the
|
|
correct result. */
|
|
|
|
BFD_ASSERT (h != NULL);
|
|
|
|
#ifndef COFF_WITH_PE
|
|
/* I think we *do* want to bypass this. If we don't, I have
|
|
seen some data parameters get the wrong relocation address.
|
|
If I link two versions with and without this section bypassed
|
|
and then do a binary comparison, the addresses which are
|
|
different can be looked up in the map. The case in which
|
|
this section has been bypassed has addresses which correspond
|
|
to values I can find in the map. */
|
|
*addendp -= sym->n_value;
|
|
#endif
|
|
}
|
|
|
|
#ifndef COFF_WITH_PE
|
|
/* If the output symbol is common (in which case this must be a
|
|
relocatable link), we need to add in the final size of the
|
|
common symbol. */
|
|
if (h != NULL && h->root.type == bfd_link_hash_common)
|
|
*addendp += h->root.u.c.size;
|
|
#endif
|
|
|
|
#ifdef COFF_WITH_PE
|
|
if (howto->pc_relative)
|
|
{
|
|
*addendp -= 4;
|
|
|
|
/* If the symbol is defined, then the generic code is going to
|
|
add back the symbol value in order to cancel out an
|
|
adjustment it made to the addend. However, we set the addend
|
|
to 0 at the start of this function. We need to adjust here,
|
|
to avoid the adjustment the generic code will make. FIXME:
|
|
This is getting a bit hackish. */
|
|
if (sym != NULL && sym->n_scnum != 0)
|
|
*addendp -= sym->n_value;
|
|
}
|
|
|
|
if (rel->r_type == R_IMAGEBASE
|
|
&& (bfd_get_flavour(sec->output_section->owner)
|
|
== bfd_target_coff_flavour))
|
|
{
|
|
*addendp -= pe_data(sec->output_section->owner)->pe_opthdr.ImageBase;
|
|
}
|
|
|
|
/* PR 17099 - Absolute R_PCRLONG relocations do not need a symbol. */
|
|
if (rel->r_type == R_PCRLONG && sym == NULL)
|
|
*addendp -= rel->r_vaddr;
|
|
else
|
|
BFD_ASSERT (sym != NULL);
|
|
|
|
if (rel->r_type == R_SECREL32 && sym != NULL)
|
|
{
|
|
bfd_vma osect_vma;
|
|
|
|
if (h && (h->root.type == bfd_link_hash_defined
|
|
|| h->root.type == bfd_link_hash_defweak))
|
|
osect_vma = h->root.u.def.section->output_section->vma;
|
|
else
|
|
{
|
|
asection *s;
|
|
int i;
|
|
|
|
/* Sigh, the only way to get the section to offset against
|
|
is to find it the hard way. */
|
|
|
|
for (s = abfd->sections, i = 1; i < sym->n_scnum; i++)
|
|
s = s->next;
|
|
|
|
osect_vma = s->output_section->vma;
|
|
}
|
|
|
|
*addendp -= osect_vma;
|
|
}
|
|
#endif
|
|
|
|
return howto;
|
|
}
|
|
|
|
#define coff_bfd_reloc_type_lookup coff_i386_reloc_type_lookup
|
|
#define coff_bfd_reloc_name_lookup coff_i386_reloc_name_lookup
|
|
|
|
static reloc_howto_type *
|
|
coff_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
|
bfd_reloc_code_real_type code)
|
|
{
|
|
switch (code)
|
|
{
|
|
case BFD_RELOC_RVA:
|
|
return howto_table + R_IMAGEBASE;
|
|
case BFD_RELOC_32:
|
|
return howto_table + R_DIR32;
|
|
case BFD_RELOC_32_PCREL:
|
|
return howto_table + R_PCRLONG;
|
|
case BFD_RELOC_16:
|
|
return howto_table + R_RELWORD;
|
|
case BFD_RELOC_16_PCREL:
|
|
return howto_table + R_PCRWORD;
|
|
case BFD_RELOC_8:
|
|
return howto_table + R_RELBYTE;
|
|
case BFD_RELOC_8_PCREL:
|
|
return howto_table + R_PCRBYTE;
|
|
#ifdef COFF_WITH_PE
|
|
case BFD_RELOC_32_SECREL:
|
|
return howto_table + R_SECREL32;
|
|
#endif
|
|
default:
|
|
BFD_FAIL ();
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static reloc_howto_type *
|
|
coff_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
|
const char *r_name)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < NUM_HOWTOS; i++)
|
|
if (howto_table[i].name != NULL
|
|
&& strcasecmp (howto_table[i].name, r_name) == 0)
|
|
return &howto_table[i];
|
|
|
|
return NULL;
|
|
}
|
|
|
|
#define coff_rtype_to_howto coff_i386_rtype_to_howto
|
|
|
|
#ifdef TARGET_UNDERSCORE
|
|
|
|
/* If i386 gcc uses underscores for symbol names, then it does not use
|
|
a leading dot for local labels, so if TARGET_UNDERSCORE is defined
|
|
we treat all symbols starting with L as local. */
|
|
|
|
static bool
|
|
coff_i386_is_local_label_name (bfd *abfd, const char *name)
|
|
{
|
|
if (name[0] == 'L')
|
|
return true;
|
|
|
|
return _bfd_coff_is_local_label_name (abfd, name);
|
|
}
|
|
|
|
#define coff_bfd_is_local_label_name coff_i386_is_local_label_name
|
|
|
|
#endif /* TARGET_UNDERSCORE */
|
|
|
|
#include "coffcode.h"
|
|
|
|
const bfd_target
|
|
#ifdef TARGET_SYM
|
|
TARGET_SYM =
|
|
#else
|
|
i386_coff_vec =
|
|
#endif
|
|
{
|
|
#ifdef TARGET_NAME
|
|
TARGET_NAME,
|
|
#else
|
|
"coff-i386", /* name */
|
|
#endif
|
|
bfd_target_coff_flavour,
|
|
BFD_ENDIAN_LITTLE, /* data byte order is little */
|
|
BFD_ENDIAN_LITTLE, /* header byte order is little */
|
|
|
|
(HAS_RELOC | EXEC_P | /* object flags */
|
|
HAS_LINENO | HAS_DEBUG |
|
|
HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED | BFD_COMPRESS | BFD_DECOMPRESS ),
|
|
|
|
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */
|
|
#ifdef COFF_WITH_PE
|
|
| SEC_LINK_ONCE | SEC_LINK_DUPLICATES | SEC_READONLY | SEC_DEBUGGING
|
|
#endif
|
|
| SEC_CODE | SEC_DATA | SEC_EXCLUDE ),
|
|
|
|
#ifdef TARGET_UNDERSCORE
|
|
TARGET_UNDERSCORE, /* leading underscore */
|
|
#else
|
|
0, /* leading underscore */
|
|
#endif
|
|
'/', /* ar_pad_char */
|
|
15, /* ar_max_namelen */
|
|
0, /* match priority. */
|
|
TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols. */
|
|
|
|
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
|
|
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
|
|
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
|
|
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
|
|
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
|
|
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
|
|
|
|
#ifndef COFF_CHECK_FORMAT
|
|
#define COFF_CHECK_FORMAT coff_object_p
|
|
#endif
|
|
#ifndef COFF_WRITE_CONTENTS
|
|
#define COFF_WRITE_CONTENTS coff_write_object_contents
|
|
#endif
|
|
|
|
/* Note that we allow an object file to be treated as a core file as well. */
|
|
|
|
{ /* bfd_check_format */
|
|
_bfd_dummy_target,
|
|
COFF_CHECK_FORMAT,
|
|
bfd_generic_archive_p,
|
|
COFF_CHECK_FORMAT
|
|
},
|
|
{ /* bfd_set_format */
|
|
_bfd_bool_bfd_false_error,
|
|
coff_mkobject,
|
|
_bfd_generic_mkarchive,
|
|
_bfd_bool_bfd_false_error
|
|
},
|
|
{ /* bfd_write_contents */
|
|
_bfd_bool_bfd_false_error,
|
|
COFF_WRITE_CONTENTS,
|
|
_bfd_write_archive_contents,
|
|
_bfd_bool_bfd_false_error
|
|
},
|
|
|
|
BFD_JUMP_TABLE_GENERIC (coff),
|
|
BFD_JUMP_TABLE_COPY (coff),
|
|
BFD_JUMP_TABLE_CORE (_bfd_nocore),
|
|
BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
|
|
BFD_JUMP_TABLE_SYMBOLS (coff),
|
|
BFD_JUMP_TABLE_RELOCS (coff),
|
|
BFD_JUMP_TABLE_WRITE (coff),
|
|
BFD_JUMP_TABLE_LINK (coff),
|
|
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
|
|
|
NULL,
|
|
|
|
COFF_SWAP_TABLE
|
|
};
|
|
|
|
#ifdef COFF_WITH_PE_BIGOBJ
|
|
const bfd_target
|
|
TARGET_SYM_BIG =
|
|
{
|
|
TARGET_NAME_BIG,
|
|
bfd_target_coff_flavour,
|
|
BFD_ENDIAN_LITTLE, /* data byte order is little */
|
|
BFD_ENDIAN_LITTLE, /* header byte order is little */
|
|
|
|
(HAS_RELOC | EXEC_P | /* object flags */
|
|
HAS_LINENO | HAS_DEBUG |
|
|
HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED | BFD_COMPRESS | BFD_DECOMPRESS ),
|
|
|
|
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */
|
|
#ifdef COFF_WITH_PE
|
|
| SEC_LINK_ONCE | SEC_LINK_DUPLICATES | SEC_READONLY | SEC_DEBUGGING
|
|
#endif
|
|
| SEC_CODE | SEC_DATA | SEC_EXCLUDE ),
|
|
|
|
#ifdef TARGET_UNDERSCORE
|
|
TARGET_UNDERSCORE, /* leading underscore */
|
|
#else
|
|
0, /* leading underscore */
|
|
#endif
|
|
'/', /* ar_pad_char */
|
|
15, /* ar_max_namelen */
|
|
0, /* match priority. */
|
|
TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols. */
|
|
|
|
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
|
|
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
|
|
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
|
|
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
|
|
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
|
|
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
|
|
|
|
/* Note that we allow an object file to be treated as a core file as well. */
|
|
|
|
{ /* bfd_check_format */
|
|
_bfd_dummy_target,
|
|
COFF_CHECK_FORMAT,
|
|
bfd_generic_archive_p,
|
|
COFF_CHECK_FORMAT
|
|
},
|
|
{ /* bfd_set_format */
|
|
_bfd_bool_bfd_false_error,
|
|
coff_mkobject,
|
|
_bfd_generic_mkarchive,
|
|
_bfd_bool_bfd_false_error
|
|
},
|
|
{ /* bfd_write_contents */
|
|
_bfd_bool_bfd_false_error,
|
|
COFF_WRITE_CONTENTS,
|
|
_bfd_write_archive_contents,
|
|
_bfd_bool_bfd_false_error
|
|
},
|
|
|
|
BFD_JUMP_TABLE_GENERIC (coff),
|
|
BFD_JUMP_TABLE_COPY (coff),
|
|
BFD_JUMP_TABLE_CORE (_bfd_nocore),
|
|
BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
|
|
BFD_JUMP_TABLE_SYMBOLS (coff),
|
|
BFD_JUMP_TABLE_RELOCS (coff),
|
|
BFD_JUMP_TABLE_WRITE (coff),
|
|
BFD_JUMP_TABLE_LINK (coff),
|
|
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
|
|
|
NULL,
|
|
|
|
&bigobj_swap_table
|
|
};
|
|
#endif
|