| 1 | /* BFD back-end for HP/Intel IA-64 COFF files. |
| 2 | Copyright 1999 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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 20 | |
| 21 | #include "bfd.h" |
| 22 | #include "sysdep.h" |
| 23 | #include "libbfd.h" |
| 24 | |
| 25 | #include "coff/ia64.h" |
| 26 | |
| 27 | #include "coff/internal.h" |
| 28 | |
| 29 | #include "coff/pe.h" |
| 30 | |
| 31 | #include "libcoff.h" |
| 32 | |
| 33 | #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2) |
| 34 | /* The page size is a guess based on ELF. */ |
| 35 | |
| 36 | #define COFF_PAGE_SIZE 0x1000 |
| 37 | |
| 38 | static reloc_howto_type howto_table[] = |
| 39 | { |
| 40 | {0}, |
| 41 | }; |
| 42 | |
| 43 | #define BADMAG(x) IA64BADMAG(x) |
| 44 | #define IA64 1 /* Customize coffcode.h */ |
| 45 | |
| 46 | #ifdef COFF_WITH_PEP64 |
| 47 | # undef AOUTSZ |
| 48 | # define AOUTSZ PEP64AOUTSZ |
| 49 | # define PEAOUTHDR PEP64AOUTHDR |
| 50 | #endif |
| 51 | |
| 52 | #define RTYPE2HOWTO(cache_ptr, dst) \ |
| 53 | (cache_ptr)->howto = howto_table + (dst)->r_type; |
| 54 | |
| 55 | #ifdef COFF_WITH_PE |
| 56 | /* Return true if this relocation should |
| 57 | appear in the output .reloc section. */ |
| 58 | |
| 59 | static boolean |
| 60 | in_reloc_p(abfd, howto) |
| 61 | bfd * abfd; |
| 62 | reloc_howto_type *howto; |
| 63 | { |
| 64 | return 0; /* We don't do relocs for now... */ |
| 65 | } |
| 66 | #endif |
| 67 | |
| 68 | #include "coffcode.h" |
| 69 | |
| 70 | static const bfd_target * |
| 71 | ia64coff_object_p (abfd) |
| 72 | bfd *abfd; |
| 73 | { |
| 74 | #ifdef COFF_IMAGE_WITH_PE |
| 75 | /* We need to hack badly to handle a PE image correctly. In PE |
| 76 | images created by the GNU linker, the offset to the COFF header |
| 77 | is always the size. However, this is not the case in images |
| 78 | generated by other PE linkers. The PE format stores a four byte |
| 79 | offset to the PE signature just before the COFF header at |
| 80 | location 0x3c of the file. We pick up that offset, verify that |
| 81 | the PE signature is there, and then set ourselves up to read in |
| 82 | the COFF header. */ |
| 83 | { |
| 84 | bfd_byte ext_offset[4]; |
| 85 | file_ptr offset; |
| 86 | bfd_byte ext_signature[4]; |
| 87 | unsigned long signature; |
| 88 | |
| 89 | if (bfd_seek (abfd, 0x3c, SEEK_SET) != 0 |
| 90 | || bfd_read (ext_offset, 1, 4, abfd) != 4) |
| 91 | { |
| 92 | if (bfd_get_error () != bfd_error_system_call) |
| 93 | bfd_set_error (bfd_error_wrong_format); |
| 94 | return NULL; |
| 95 | } |
| 96 | offset = bfd_h_get_32 (abfd, ext_offset); |
| 97 | if (bfd_seek (abfd, offset, SEEK_SET) != 0 |
| 98 | || bfd_read (ext_signature, 1, 4, abfd) != 4) |
| 99 | { |
| 100 | if (bfd_get_error () != bfd_error_system_call) |
| 101 | bfd_set_error (bfd_error_wrong_format); |
| 102 | return NULL; |
| 103 | } |
| 104 | signature = bfd_h_get_32 (abfd, ext_signature); |
| 105 | |
| 106 | if (signature != 0x4550) |
| 107 | { |
| 108 | bfd_set_error (bfd_error_wrong_format); |
| 109 | return NULL; |
| 110 | } |
| 111 | |
| 112 | /* Here is the hack. coff_object_p wants to read filhsz bytes to |
| 113 | pick up the COFF header. We adjust so that that will work. 20 |
| 114 | is the size of the COFF filehdr. */ |
| 115 | |
| 116 | if (bfd_seek (abfd, |
| 117 | (bfd_tell (abfd) |
| 118 | - bfd_coff_filhsz (abfd) |
| 119 | + 20), |
| 120 | SEEK_SET) |
| 121 | != 0) |
| 122 | { |
| 123 | if (bfd_get_error () != bfd_error_system_call) |
| 124 | bfd_set_error (bfd_error_wrong_format); |
| 125 | return NULL; |
| 126 | } |
| 127 | } |
| 128 | #endif |
| 129 | |
| 130 | return coff_object_p (abfd); |
| 131 | } |
| 132 | |
| 133 | const bfd_target |
| 134 | #ifdef TARGET_SYM |
| 135 | TARGET_SYM = |
| 136 | #else |
| 137 | ia64coff_vec = |
| 138 | #endif |
| 139 | { |
| 140 | #ifdef TARGET_NAME |
| 141 | TARGET_NAME, |
| 142 | #else |
| 143 | "coff-ia64", /* name */ |
| 144 | #endif |
| 145 | bfd_target_coff_flavour, |
| 146 | BFD_ENDIAN_LITTLE, /* data byte order is little */ |
| 147 | BFD_ENDIAN_LITTLE, /* header byte order is little */ |
| 148 | |
| 149 | (HAS_RELOC | EXEC_P | /* object flags */ |
| 150 | HAS_LINENO | HAS_DEBUG | |
| 151 | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), |
| 152 | |
| 153 | #ifndef COFF_WITH_PE |
| 154 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */ |
| 155 | | SEC_CODE | SEC_DATA), |
| 156 | #else |
| 157 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */ |
| 158 | | SEC_CODE | SEC_DATA |
| 159 | | SEC_LINK_ONCE | SEC_LINK_DUPLICATES), |
| 160 | #endif |
| 161 | |
| 162 | #ifdef TARGET_UNDERSCORE |
| 163 | TARGET_UNDERSCORE, /* leading underscore */ |
| 164 | #else |
| 165 | 0, /* leading underscore */ |
| 166 | #endif |
| 167 | '/', /* ar_pad_char */ |
| 168 | 15, /* ar_max_namelen */ |
| 169 | |
| 170 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, |
| 171 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, |
| 172 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */ |
| 173 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, |
| 174 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, |
| 175 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */ |
| 176 | |
| 177 | /* Note that we allow an object file to be treated as a core file as well. */ |
| 178 | {_bfd_dummy_target, ia64coff_object_p, /* bfd_check_format */ |
| 179 | bfd_generic_archive_p, ia64coff_object_p}, |
| 180 | {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */ |
| 181 | bfd_false}, |
| 182 | {bfd_false, coff_write_object_contents, /* bfd_write_contents */ |
| 183 | _bfd_write_archive_contents, bfd_false}, |
| 184 | |
| 185 | BFD_JUMP_TABLE_GENERIC (coff), |
| 186 | BFD_JUMP_TABLE_COPY (coff), |
| 187 | BFD_JUMP_TABLE_CORE (_bfd_nocore), |
| 188 | BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), |
| 189 | BFD_JUMP_TABLE_SYMBOLS (coff), |
| 190 | BFD_JUMP_TABLE_RELOCS (coff), |
| 191 | BFD_JUMP_TABLE_WRITE (coff), |
| 192 | BFD_JUMP_TABLE_LINK (coff), |
| 193 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), |
| 194 | |
| 195 | NULL, |
| 196 | |
| 197 | COFF_SWAP_TABLE |
| 198 | }; |