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/* BFD back-end for AArch64 COFF files.
Copyright (C) 2021-2022 Free Software Foundation, Inc.
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. */
#ifndef COFF_WITH_peAArch64
#define COFF_WITH_peAArch64
#endif
/* Note we have to make sure not to include headers twice.
Not all headers are wrapped in #ifdef guards, so we define
PEI_HEADERS to prevent double including here. */
#ifndef PEI_HEADERS
#include "sysdep.h"
#include "bfd.h"
#include "libbfd.h"
#include "coff/aarch64.h"
#include "coff/internal.h"
#include "coff/pe.h"
#include "libcoff.h"
#include "libiberty.h"
#endif
#include "libcoff.h"
/* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */
#define MINUS_ONE (~ (bfd_vma) 0)
static const reloc_howto_type arm64_reloc_howto_64 = HOWTO(IMAGE_REL_ARM64_ADDR64, 0, 8, 64, false, 0,
complain_overflow_bitfield,
NULL, "64",
false, MINUS_ONE, MINUS_ONE, false);
static const reloc_howto_type arm64_reloc_howto_32 = HOWTO (IMAGE_REL_ARM64_ADDR32, 0, 4, 32, false, 0,
complain_overflow_bitfield,
NULL, "32",
false, 0xffffffff, 0xffffffff, false);
static const reloc_howto_type arm64_reloc_howto_32_pcrel = HOWTO (IMAGE_REL_ARM64_REL32, 0, 4, 32, true, 0,
complain_overflow_bitfield,
NULL, "DISP32",
false, 0xffffffff, 0xffffffff, true);
static const reloc_howto_type arm64_reloc_howto_branch26 = HOWTO (IMAGE_REL_ARM64_BRANCH26, 0, 4, 26, true, 0,
complain_overflow_bitfield,
NULL, "BRANCH26",
false, 0x03ffffff, 0x03ffffff, true);
static const reloc_howto_type arm64_reloc_howto_page21 = HOWTO (IMAGE_REL_ARM64_PAGEBASE_REL21, 12, 4, 21, true, 0,
complain_overflow_signed,
NULL, "PAGE21",
false, 0x1fffff, 0x1fffff, false);
static const reloc_howto_type arm64_reloc_howto_lo21 = HOWTO (IMAGE_REL_ARM64_REL21, 0, 4, 21, true, 0,
complain_overflow_signed,
NULL, "LO21",
false, 0x1fffff, 0x1fffff, true);
static const reloc_howto_type arm64_reloc_howto_pgoff12 = HOWTO (IMAGE_REL_ARM64_PAGEOFFSET_12L, 1, 4, 12, true, 0,
complain_overflow_signed,
NULL, "PGOFF12",
false, 0xffe, 0xffe, true);
static const reloc_howto_type arm64_reloc_howto_branch19 = HOWTO (IMAGE_REL_ARM64_BRANCH19, 2, 4, 19, true, 0,
complain_overflow_signed,
NULL, "BRANCH19",
false, 0x7ffff, 0x7ffff, true);
static const reloc_howto_type* const arm64_howto_table[] = {
&arm64_reloc_howto_64,
&arm64_reloc_howto_32,
&arm64_reloc_howto_32_pcrel,
&arm64_reloc_howto_branch26,
&arm64_reloc_howto_page21,
&arm64_reloc_howto_lo21,
&arm64_reloc_howto_pgoff12,
&arm64_reloc_howto_branch19
};
#ifndef NUM_ELEM
#define NUM_ELEM(a) ((sizeof (a)) / sizeof ((a)[0]))
#endif
#define NUM_RELOCS NUM_ELEM (arm64_howto_table)
#define coff_bfd_reloc_type_lookup coff_aarch64_reloc_type_lookup
#define coff_bfd_reloc_name_lookup coff_aarch64_reloc_name_lookup
static reloc_howto_type *
coff_aarch64_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, bfd_reloc_code_real_type code)
{
switch (code)
{
case BFD_RELOC_64:
return &arm64_reloc_howto_64;
case BFD_RELOC_32:
return &arm64_reloc_howto_32;
case BFD_RELOC_32_PCREL:
return &arm64_reloc_howto_32_pcrel;
case BFD_RELOC_AARCH64_CALL26:
case BFD_RELOC_AARCH64_JUMP26:
return &arm64_reloc_howto_branch26;
case BFD_RELOC_AARCH64_ADR_HI21_PCREL:
return &arm64_reloc_howto_page21;
case BFD_RELOC_AARCH64_ADR_LO21_PCREL:
return &arm64_reloc_howto_lo21;
case BFD_RELOC_AARCH64_LDST16_LO12:
return &arm64_reloc_howto_pgoff12;
case BFD_RELOC_AARCH64_BRANCH19:
return &arm64_reloc_howto_branch19;
default:
BFD_FAIL ();
return NULL;
}
return NULL;
}
static reloc_howto_type *
coff_aarch64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
const char *r_name)
{
unsigned int i;
for (i = 0; i < NUM_RELOCS; i++)
if (arm64_howto_table[i]->name != NULL
&& strcasecmp (arm64_howto_table[i]->name, r_name) == 0)
return arm64_howto_table[i];
return NULL;
}
#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER 2
#define COFF_PAGE_SIZE 0x1000
static reloc_howto_type *
coff_aarch64_rtype_lookup (unsigned int code)
{
switch (code)
{
case IMAGE_REL_ARM64_ADDR64:
return &arm64_reloc_howto_64;
case IMAGE_REL_ARM64_ADDR32:
return &arm64_reloc_howto_32;
case IMAGE_REL_ARM64_REL32:
return &arm64_reloc_howto_32_pcrel;
case IMAGE_REL_ARM64_BRANCH26:
return &arm64_reloc_howto_branch26;
case IMAGE_REL_ARM64_PAGEBASE_REL21:
return &arm64_reloc_howto_page21;
case IMAGE_REL_ARM64_REL21:
return &arm64_reloc_howto_lo21;
case IMAGE_REL_ARM64_PAGEOFFSET_12L:
return &arm64_reloc_howto_pgoff12;
case IMAGE_REL_ARM64_BRANCH19:
return &arm64_reloc_howto_branch19;
default:
BFD_FAIL ();
return NULL;
}
return NULL;
}
#define RTYPE2HOWTO(cache_ptr, dst) \
((cache_ptr)->howto = coff_aarch64_rtype_lookup((dst)->r_type))
#define SELECT_RELOC(x,howto) { (x).r_type = (howto)->type; }
#ifndef bfd_pe_print_pdata
#define bfd_pe_print_pdata NULL
#endif
/* Handle include/coff/aarch64.h external_reloc. */
#define SWAP_IN_RELOC_OFFSET H_GET_32
#define SWAP_OUT_RELOC_OFFSET H_PUT_32
/* 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;
}
#include "coffcode.h"
/* Target vectors. */
const bfd_target
#ifdef TARGET_SYM
TARGET_SYM =
#else
# error "target symbol name not specified"
#endif
{
#ifdef TARGET_NAME
TARGET_NAME,
#else
# error "target name not specified"
#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. */
#if defined(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. */
/* Data conversion functions. */
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. */
/* Header conversion functions. */
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_object_p,
bfd_generic_archive_p,
coff_object_p
},
{ /* 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_object_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
};
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