bfd/coff-ia64.c

   1 /* BFD back-end for HP/Intel IA-64 COFF files.
   2    Copyright (C) 1999-2024 Free Software Foundation, Inc.
   3    Contributed by David Mosberger <davidm@hpl.hp.com>
   4
   5    This file is part of BFD, the Binary File Descriptor library.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  20    MA 02110-1301, USA.  */
  21
  22 #include "sysdep.h"
  23 #include "bfd.h"
  24 #include "libbfd.h"
  25 #include "coff/ia64.h"
  26 #include "coff/internal.h"
  27 #include "coff/pe.h"
  28 #include "libcoff.h"
  29
  30 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2)
  31
  32 /* Windows ia64 uses 8K page size.  */
  33 #define COFF_PAGE_SIZE 0x2000
  34
  35 static reloc_howto_type howto_table[] =
  36 {
  37   EMPTY_HOWTO (0),
  38 };
  39
  40 #define BADMAG(x) IA64BADMAG(x)
  41 #define IA64 1                  /* Customize coffcode.h */
  42
  43 #ifdef COFF_WITH_pep
  44 # undef AOUTSZ
  45 # define AOUTSZ         PEPAOUTSZ
  46 # define PEAOUTHDR      PEPAOUTHDR
  47 #endif
  48
  49 #define RTYPE2HOWTO(cache_ptr, dst) \
  50   (cache_ptr)->howto = howto_table;
  51
  52 #ifdef COFF_WITH_PE
  53 /* Return TRUE if this relocation should
  54    appear in the output .reloc section.  */
  55
  56 static bool
  57 in_reloc_p (bfd * abfd ATTRIBUTE_UNUSED,
  58             reloc_howto_type *howto ATTRIBUTE_UNUSED)
  59 {
  60   return false;                 /* We don't do relocs for now...  */
  61 }
  62 #endif
  63
  64 #ifndef bfd_pe_print_pdata
  65 #define bfd_pe_print_pdata      NULL
  66 #endif
  67
  68 #include "coffcode.h"
  69
  70 static bfd_cleanup
  71 ia64coff_object_p (bfd *abfd)
  72 {
  73 #ifdef COFF_IMAGE_WITH_PE
  74   {
  75     struct external_DOS_hdr dos_hdr;
  76     struct external_PEI_IMAGE_hdr image_hdr;
  77     file_ptr offset;
  78
  79     if (bfd_seek (abfd, 0, SEEK_SET) != 0
  80         || (bfd_read (&dos_hdr, sizeof (dos_hdr), abfd) != sizeof (dos_hdr)))
  81       {
  82         if (bfd_get_error () != bfd_error_system_call)
  83           bfd_set_error (bfd_error_wrong_format);
  84         return NULL;
  85       }
  86
  87     /* There are really two magic numbers involved; the magic number
  88        that says this is a NT executable (PEI) and the magic number
  89        that determines the architecture.  The former is IMAGE_DOS_SIGNATURE,
  90        stored in the e_magic field.  The latter is stored in the
  91        f_magic field.  If the NT magic number isn't valid, the
  92        architecture magic number could be mimicked by some other
  93        field (specifically, the number of relocs in section 3).  Since
  94        this routine can only be called correctly for a PEI file, check
  95        the e_magic number here, and, if it doesn't match, clobber the
  96        f_magic number so that we don't get a false match.  */
  97     if (H_GET_16 (abfd, dos_hdr.e_magic) != IMAGE_DOS_SIGNATURE)
  98       {
  99         bfd_set_error (bfd_error_wrong_format);
 100         return NULL;
 101       }
 102
 103     offset = H_GET_32 (abfd, dos_hdr.e_lfanew);
 104     if (bfd_seek (abfd, offset, SEEK_SET) != 0
 105         || (bfd_read (&image_hdr, sizeof (image_hdr), abfd)
 106             != sizeof (image_hdr)))
 107       {
 108         if (bfd_get_error () != bfd_error_system_call)
 109           bfd_set_error (bfd_error_wrong_format);
 110         return NULL;
 111       }
 112
 113     if (H_GET_32 (abfd, image_hdr.nt_signature)
 114         != 0x4550)
 115       {
 116         bfd_set_error (bfd_error_wrong_format);
 117         return NULL;
 118       }
 119
 120     /* Here is the hack.  coff_object_p wants to read filhsz bytes to
 121        pick up the COFF header for PE, see "struct external_PEI_filehdr"
 122        in include/coff/pe.h.  We adjust so that that will work. */
 123     if (bfd_seek (abfd, offset - sizeof (dos_hdr), SEEK_SET) != 0)
 124       {
 125         if (bfd_get_error () != bfd_error_system_call)
 126           bfd_set_error (bfd_error_wrong_format);
 127         return NULL;
 128       }
 129   }
 130 #endif
 131
 132   return coff_object_p (abfd);
 133 }
 134
 135 const bfd_target
 136 #ifdef TARGET_SYM
 137   TARGET_SYM =
 138 #else
 139   ia64coff_vec =
 140 #endif
 141 {
 142 #ifdef TARGET_NAME
 143   TARGET_NAME,
 144 #else
 145   "coff-ia64",                  /* name */
 146 #endif
 147   bfd_target_coff_flavour,
 148   BFD_ENDIAN_LITTLE,            /* data byte order is little */
 149   BFD_ENDIAN_LITTLE,            /* header byte order is little */
 150
 151   (HAS_RELOC | EXEC_P           /* object flags */
 152    | HAS_LINENO | HAS_DEBUG
 153    | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
 154
 155 #ifndef COFF_WITH_PE
 156   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */
 157    | SEC_CODE | SEC_DATA),
 158 #else
 159   (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */
 160    | SEC_CODE | SEC_DATA
 161    | SEC_LINK_ONCE | SEC_LINK_DUPLICATES),
 162 #endif
 163
 164 #ifdef TARGET_UNDERSCORE
 165   TARGET_UNDERSCORE,            /* leading underscore */
 166 #else
 167   0,                            /* leading underscore */
 168 #endif
 169   '/',                          /* ar_pad_char */
 170   15,                           /* ar_max_namelen */
 171   0,                            /* match priority.  */
 172   TARGET_KEEP_UNUSED_SECTION_SYMBOLS, /* keep unused section symbols.  */
 173
 174   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 175      bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 176      bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
 177   bfd_getl64, bfd_getl_signed_64, bfd_putl64,
 178      bfd_getl32, bfd_getl_signed_32, bfd_putl32,
 179      bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
 180
 181 /* Note that we allow an object file to be treated as a core file as well.  */
 182   {                             /* bfd_check_format */
 183     _bfd_dummy_target,
 184     ia64coff_object_p,
 185     bfd_generic_archive_p,
 186     ia64coff_object_p
 187   },
 188   {                             /* bfd_set_format */
 189     _bfd_bool_bfd_false_error,
 190     coff_mkobject,
 191     _bfd_generic_mkarchive,
 192     _bfd_bool_bfd_false_error
 193   },
 194   {                             /* bfd_write_contents */
 195     _bfd_bool_bfd_false_error,
 196     coff_write_object_contents,
 197     _bfd_write_archive_contents,
 198     _bfd_bool_bfd_false_error
 199   },
 200
 201   BFD_JUMP_TABLE_GENERIC (coff),
 202   BFD_JUMP_TABLE_COPY (coff),
 203   BFD_JUMP_TABLE_CORE (_bfd_nocore),
 204   BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
 205   BFD_JUMP_TABLE_SYMBOLS (coff),
 206   BFD_JUMP_TABLE_RELOCS (coff),
 207   BFD_JUMP_TABLE_WRITE (coff),
 208   BFD_JUMP_TABLE_LINK (coff),
 209   BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
 210
 211   NULL,
 212
 213   COFF_SWAP_TABLE
 214 };