bfd/coff-aarch64.c

   1 /* BFD back-end for AArch64 COFF files.
   2    Copyright (C) 2021-2022 Free Software Foundation, Inc.
   3
   4    This file is part of BFD, the Binary File Descriptor library.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  19    MA 02110-1301, USA.  */
  20
  21
  22 #ifndef COFF_WITH_peAArch64
  23 #define COFF_WITH_peAArch64
  24 #endif
  25
  26 /* Note we have to make sure not to include headers twice.
  27    Not all headers are wrapped in #ifdef guards, so we define
  28    PEI_HEADERS to prevent double including here.  */
  29 #ifndef PEI_HEADERS
  30 #include "sysdep.h"
  31 #include "bfd.h"
  32 #include "libbfd.h"
  33 #include "coff/aarch64.h"
  34 #include "coff/internal.h"
  35 #include "coff/pe.h"
  36 #include "libcoff.h"
  37 #include "libiberty.h"
  38 #endif
  39
  40 #include "libcoff.h"
  41
  42 /* The page size is a guess based on ELF.  */
  43
  44 #define COFF_PAGE_SIZE 0x1000
  45
  46 /* All users of this file have bfd_octets_per_byte (abfd, sec) == 1.  */
  47 #define OCTETS_PER_BYTE(ABFD, SEC) 1
  48
  49 #ifndef PCRELOFFSET
  50 #define PCRELOFFSET true
  51 #endif
  52
  53 /* Currently we don't handle any relocations.  */
  54 static reloc_howto_type pe_aarch64_std_reloc_howto[] =
  55   {
  56
  57   };
  58
  59 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER  2
  60 #define COFF_PAGE_SIZE                        0x1000
  61
  62 #ifndef NUM_ELEM
  63 #define NUM_ELEM(a) ((sizeof (a)) / sizeof ((a)[0]))
  64 #endif
  65
  66 #define NUM_RELOCS NUM_ELEM (pe_aarch64_std_reloc_howto)
  67
  68 #define RTYPE2HOWTO(cache_ptr, dst)             \
  69   (cache_ptr)->howto = NULL
  70
  71 #ifndef bfd_pe_print_pdata
  72 #define bfd_pe_print_pdata      NULL
  73 #endif
  74
  75 /* Handle include/coff/aarch64.h external_reloc.  */
  76 #define SWAP_IN_RELOC_OFFSET    H_GET_32
  77 #define SWAP_OUT_RELOC_OFFSET   H_PUT_32
  78
  79 /* Return TRUE if this relocation should
  80    appear in the output .reloc section.  */
  81
  82 static bool
  83 in_reloc_p (bfd * abfd ATTRIBUTE_UNUSED,
  84             reloc_howto_type * howto)
  85 {
  86   return !howto->pc_relative;
  87 }
  88
  89 #include "coffcode.h"
  90
  91 /* Target vectors.  */
  92 const bfd_target
  93 #ifdef TARGET_SYM
  94   TARGET_SYM =
  95 #else
  96   aarch64_pei_vec =
  97 #endif
  98 {
  99 #ifdef TARGET_NAME
 100   TARGET_NAME,
 101 #else
 102  "pei-aarch64-little",                  /* Name.  */
 103 #endif
 104   bfd_target_coff_flavour,
 105   BFD_ENDIAN_LITTLE,            /* Data byte order is little.  */
 106   BFD_ENDIAN_LITTLE,            /* Header byte order is little.  */
 107
 108   (HAS_RELOC | EXEC_P           /* Object flags.  */
 109    | HAS_LINENO | HAS_DEBUG
 110    | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED | BFD_COMPRESS | BFD_DECOMPRESS),
 111
 112   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* Section flags.  */
 113 #if defined(COFF_WITH_PE)
 114    | SEC_LINK_ONCE | SEC_LINK_DUPLICATES | SEC_READONLY | SEC_DEBUGGING
 115 #endif
 116    | SEC_CODE | SEC_DATA | SEC_EXCLUDE ),
 117
 118 #ifdef TARGET_UNDERSCORE
 119   TARGET_UNDERSCORE,            /* Leading underscore.  */
 120 #else
 121   0,                            /* Leading underscore.  */
 122 #endif
 123   '/',                          /* Ar_pad_char.  */
 124   15,                           /* Ar_max_namelen.  */
 125   0,                            /* match priority.  */
 126   TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols.  */
 127
 128      /* Data conversion functions.  */
 129      bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 130      bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 131      bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Data.  */
 132      /* Header conversion functions.  */
 133      bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 134      bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 135      bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Hdrs.  */
 136
 137   /* Note that we allow an object file to be treated as a core file as well.  */
 138   {                             /* bfd_check_format.  */
 139     _bfd_dummy_target,
 140     coff_object_p,
 141     bfd_generic_archive_p,
 142     coff_object_p
 143   },
 144   {                             /* bfd_set_format.  */
 145     _bfd_bool_bfd_false_error,
 146     coff_mkobject,
 147     _bfd_generic_mkarchive,
 148     _bfd_bool_bfd_false_error
 149   },
 150   {                             /* bfd_write_contents.  */
 151     _bfd_bool_bfd_false_error,
 152     coff_write_object_contents,
 153     _bfd_write_archive_contents,
 154     _bfd_bool_bfd_false_error
 155   },
 156
 157   BFD_JUMP_TABLE_GENERIC (coff),
 158   BFD_JUMP_TABLE_COPY (coff),
 159   BFD_JUMP_TABLE_CORE (_bfd_nocore),
 160   BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 161   BFD_JUMP_TABLE_SYMBOLS (coff),
 162   BFD_JUMP_TABLE_RELOCS (coff),
 163   BFD_JUMP_TABLE_WRITE (coff),
 164   BFD_JUMP_TABLE_LINK (coff),
 165   BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
 166
 167   NULL,
 168
 169   COFF_SWAP_TABLE
 170 };