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coff-loongarch64.c revision 1.1 
      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 };
    163