Fix the BFD library's find_nearest_line feature to produce consistent results.

[thirdparty/binutils-gdb.git] / bfd / coff-loongarch64.c

/* BFD back-end for LoongArch64 COFF files.
   Copyright (C) 2022-2023 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_peLoongArch64
#define COFF_WITH_peLoongArch64
#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/loongarch64.h"
#include "coff/internal.h"
#include "coff/pe.h"
#include "libcoff.h"
#include "libiberty.h"
#endif

#include "libcoff.h"

/* The page size is a guess based on ELF.  */

#define COFF_PAGE_SIZE 0x4000

/* All users of this file have bfd_octets_per_byte (abfd, sec) == 1.  */
#define OCTETS_PER_BYTE(ABFD, SEC) 1

#ifndef PCRELOFFSET
#define PCRELOFFSET true
#endif

/* Currently we don't handle any relocations.  */
static reloc_howto_type pe_loongarch64_std_reloc_howto[] =
  {

  };

#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER  2

#ifndef NUM_ELEM
#define NUM_ELEM(a) ((sizeof (a)) / sizeof ((a)[0]))
#endif

#define NUM_RELOCS NUM_ELEM (pe_loongarch64_std_reloc_howto)

#define RTYPE2HOWTO(cache_ptr, dst)             \
  (cache_ptr)->howto = NULL

#ifndef bfd_pe_print_pdata
#define bfd_pe_print_pdata      NULL
#endif

/* Handle include/coff/loongarch64.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
  loongarch64_pei_vec =
#endif
{
#ifdef TARGET_NAME
  TARGET_NAME,
#else
 "pei-loongarch64",			/* 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.  */
#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
};