bfd/coff-loongarch64.c

   1 /* BFD back-end for LoongArch64 COFF files.
   2    Copyright (C) 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_peLoongArch64
  23 #define COFF_WITH_peLoongArch64
  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/loongarch64.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 0x4000
  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_loongarch64_std_reloc_howto[] =
  55   {
  56
  57   };
  58
  59 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER  2
  60
  61 #ifndef NUM_ELEM
  62 #define NUM_ELEM(a) ((sizeof (a)) / sizeof ((a)[0]))
  63 #endif
  64
  65 #define NUM_RELOCS NUM_ELEM (pe_loongarch64_std_reloc_howto)
  66
  67 #define RTYPE2HOWTO(cache_ptr, dst)             \
  68   (cache_ptr)->howto = NULL
  69
  70 #ifndef bfd_pe_print_pdata
  71 #define bfd_pe_print_pdata      NULL
  72 #endif
  73
  74 /* Handle include/coff/loongarch64.h external_reloc.  */
  75 #define SWAP_IN_RELOC_OFFSET    H_GET_32
  76 #define SWAP_OUT_RELOC_OFFSET   H_PUT_32
  77
  78 /* Return TRUE if this relocation should
  79    appear in the output .reloc section.  */
  80
  81 static bool
  82 in_reloc_p (bfd * abfd ATTRIBUTE_UNUSED,
  83             reloc_howto_type * howto)
  84 {
  85   return !howto->pc_relative;
  86 }
  87
  88 #include "coffcode.h"
  89
  90 /* Target vectors.  */
  91 const bfd_target
  92 #ifdef TARGET_SYM
  93   TARGET_SYM =
  94 #else
  95   loongarch64_pei_vec =
  96 #endif
  97 {
  98 #ifdef TARGET_NAME
  99   TARGET_NAME,
 100 #else
 101  "pei-loongarch64",                     /* Name.  */
 102 #endif
 103   bfd_target_coff_flavour,
 104   BFD_ENDIAN_LITTLE,            /* Data byte order is little.  */
 105   BFD_ENDIAN_LITTLE,            /* Header byte order is little.  */
 106
 107   (HAS_RELOC | EXEC_P           /* Object flags.  */
 108    | HAS_LINENO | HAS_DEBUG
 109    | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED | BFD_COMPRESS | BFD_DECOMPRESS),
 110
 111   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* Section flags.  */
 112 #if defined(COFF_WITH_PE)
 113    | SEC_LINK_ONCE | SEC_LINK_DUPLICATES | SEC_READONLY | SEC_DEBUGGING
 114 #endif
 115    | SEC_CODE | SEC_DATA | SEC_EXCLUDE ),
 116
 117 #ifdef TARGET_UNDERSCORE
 118   TARGET_UNDERSCORE,            /* Leading underscore.  */
 119 #else
 120   0,                            /* Leading underscore.  */
 121 #endif
 122   '/',                          /* Ar_pad_char.  */
 123   15,                           /* Ar_max_namelen.  */
 124   0,                            /* match priority.  */
 125   TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols.  */
 126
 127      /* Data conversion functions.  */
 128      bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 129      bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 130      bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Data.  */
 131      /* Header conversion functions.  */
 132      bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 133      bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 134      bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Hdrs.  */
 135
 136   /* Note that we allow an object file to be treated as a core file as well.  */
 137   {                             /* bfd_check_format.  */
 138     _bfd_dummy_target,
 139     coff_object_p,
 140     bfd_generic_archive_p,
 141     coff_object_p
 142   },
 143   {                             /* bfd_set_format.  */
 144     _bfd_bool_bfd_false_error,
 145     coff_mkobject,
 146     _bfd_generic_mkarchive,
 147     _bfd_bool_bfd_false_error
 148   },
 149   {                             /* bfd_write_contents.  */
 150     _bfd_bool_bfd_false_error,
 151     coff_write_object_contents,
 152     _bfd_write_archive_contents,
 153     _bfd_bool_bfd_false_error
 154   },
 155
 156   BFD_JUMP_TABLE_GENERIC (coff),
 157   BFD_JUMP_TABLE_COPY (coff),
 158   BFD_JUMP_TABLE_CORE (_bfd_nocore),
 159   BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 160   BFD_JUMP_TABLE_SYMBOLS (coff),
 161   BFD_JUMP_TABLE_RELOCS (coff),
 162   BFD_JUMP_TABLE_WRITE (coff),
 163   BFD_JUMP_TABLE_LINK (coff),
 164   BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
 165
 166   NULL,
 167
 168   COFF_SWAP_TABLE
 169 };