bfd/coff-loongarch64.c

   1 /* BFD back-end for LoongArch64 COFF files.
   2    Copyright (C) 2022-2024 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 #include "sysdep.h"
  27 #include "bfd.h"
  28 #include "libbfd.h"
  29 #include "coff/loongarch64.h"
  30 #include "coff/internal.h"
  31 #include "coff/pe.h"
  32 #include "libcoff.h"
  33 #include "libiberty.h"
  34
  35 /* The page size is a guess based on ELF.  */
  36
  37 #define COFF_PAGE_SIZE 0x4000
  38
  39 /* All users of this file have bfd_octets_per_byte (abfd, sec) == 1.  */
  40 #define OCTETS_PER_BYTE(ABFD, SEC) 1
  41
  42 #ifndef PCRELOFFSET
  43 #define PCRELOFFSET true
  44 #endif
  45
  46 /* Currently we don't handle any relocations.  */
  47 static reloc_howto_type pe_loongarch64_std_reloc_howto[] =
  48   {
  49
  50   };
  51
  52 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER  2
  53
  54 #ifndef NUM_ELEM
  55 #define NUM_ELEM(a) ((sizeof (a)) / sizeof ((a)[0]))
  56 #endif
  57
  58 #define NUM_RELOCS NUM_ELEM (pe_loongarch64_std_reloc_howto)
  59
  60 #define RTYPE2HOWTO(cache_ptr, dst)             \
  61   (cache_ptr)->howto = NULL
  62
  63 #ifndef bfd_pe_print_pdata
  64 #define bfd_pe_print_pdata      NULL
  65 #endif
  66
  67 /* Handle include/coff/loongarch64.h external_reloc.  */
  68 #define SWAP_IN_RELOC_OFFSET    H_GET_32
  69 #define SWAP_OUT_RELOC_OFFSET   H_PUT_32
  70
  71 /* Return TRUE if this relocation should
  72    appear in the output .reloc section.  */
  73
  74 static bool
  75 in_reloc_p (bfd * abfd ATTRIBUTE_UNUSED,
  76             reloc_howto_type * howto)
  77 {
  78   return !howto->pc_relative;
  79 }
  80
  81 #include "coffcode.h"
  82
  83 /* Target vectors.  */
  84 const bfd_target
  85 #ifdef TARGET_SYM
  86   TARGET_SYM =
  87 #else
  88   loongarch64_pei_vec =
  89 #endif
  90 {
  91 #ifdef TARGET_NAME
  92   TARGET_NAME,
  93 #else
  94  "pei-loongarch64",                     /* Name.  */
  95 #endif
  96   bfd_target_coff_flavour,
  97   BFD_ENDIAN_LITTLE,            /* Data byte order is little.  */
  98   BFD_ENDIAN_LITTLE,            /* Header byte order is little.  */
  99
 100   (HAS_RELOC | EXEC_P           /* Object flags.  */
 101    | HAS_LINENO | HAS_DEBUG
 102    | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED | BFD_COMPRESS | BFD_DECOMPRESS),
 103
 104   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* Section flags.  */
 105 #if defined(COFF_WITH_PE)
 106    | SEC_LINK_ONCE | SEC_LINK_DUPLICATES | SEC_READONLY | SEC_DEBUGGING
 107 #endif
 108    | SEC_CODE | SEC_DATA | SEC_EXCLUDE ),
 109
 110 #ifdef TARGET_UNDERSCORE
 111   TARGET_UNDERSCORE,            /* Leading underscore.  */
 112 #else
 113   0,                            /* Leading underscore.  */
 114 #endif
 115   '/',                          /* Ar_pad_char.  */
 116   15,                           /* Ar_max_namelen.  */
 117   0,                            /* match priority.  */
 118   TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols.  */
 119
 120      /* Data conversion functions.  */
 121      bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 122      bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 123      bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Data.  */
 124      /* Header conversion functions.  */
 125      bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 126      bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 127      bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* Hdrs.  */
 128
 129   /* Note that we allow an object file to be treated as a core file as well.  */
 130   {                             /* bfd_check_format.  */
 131     _bfd_dummy_target,
 132     coff_object_p,
 133     bfd_generic_archive_p,
 134     coff_object_p
 135   },
 136   {                             /* bfd_set_format.  */
 137     _bfd_bool_bfd_false_error,
 138     coff_mkobject,
 139     _bfd_generic_mkarchive,
 140     _bfd_bool_bfd_false_error
 141   },
 142   {                             /* bfd_write_contents.  */
 143     _bfd_bool_bfd_false_error,
 144     coff_write_object_contents,
 145     _bfd_write_archive_contents,
 146     _bfd_bool_bfd_false_error
 147   },
 148
 149   BFD_JUMP_TABLE_GENERIC (coff),
 150   BFD_JUMP_TABLE_COPY (coff),
 151   BFD_JUMP_TABLE_CORE (_bfd_nocore),
 152   BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 153   BFD_JUMP_TABLE_SYMBOLS (coff),
 154   BFD_JUMP_TABLE_RELOCS (coff),
 155   BFD_JUMP_TABLE_WRITE (coff),
 156   BFD_JUMP_TABLE_LINK (coff),
 157   BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
 158
 159   NULL,
 160
 161   COFF_SWAP_TABLE
 162 };