coff-ia64.c revision 84865
1/* BFD back-end for HP/Intel IA-64 COFF files. 2 Copyright 1999, 2000, 2001 Free Software Foundation, Inc. 3 Contributed by David Mosberger <davidm@hpl.hp.com> 4 5This file is part of BFD, the Binary File Descriptor library. 6 7This program is free software; you can redistribute it and/or modify 8it under the terms of the GNU General Public License as published by 9the Free Software Foundation; either version 2 of the License, or 10(at your option) any later version. 11 12This program is distributed in the hope that it will be useful, 13but WITHOUT ANY WARRANTY; without even the implied warranty of 14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15GNU General Public License for more details. 16 17You should have received a copy of the GNU General Public License 18along with this program; if not, write to the Free Software 19Foundation, 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#include "coff/ia64.h" 25#include "coff/internal.h" 26#include "coff/pe.h" 27#include "libcoff.h" 28 29#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2) 30/* The page size is a guess based on ELF. */ 31 32#define COFF_PAGE_SIZE 0x1000 33 34static reloc_howto_type howto_table[] = 35{ 36 EMPTY_HOWTO (0), 37}; 38 39#define BADMAG(x) IA64BADMAG(x) 40#define IA64 1 /* Customize coffcode.h */ 41 42#ifdef COFF_WITH_pep 43# undef AOUTSZ 44# define AOUTSZ PEPAOUTSZ 45# define PEAOUTHDR PEPAOUTHDR 46#endif 47 48#define RTYPE2HOWTO(cache_ptr, dst) \ 49 (cache_ptr)->howto = howto_table + (dst)->r_type; 50 51#ifdef COFF_WITH_PE 52/* Return true if this relocation should 53 appear in the output .reloc section. */ 54 55static boolean 56in_reloc_p(abfd, howto) 57 bfd * abfd ATTRIBUTE_UNUSED; 58 reloc_howto_type *howto ATTRIBUTE_UNUSED; 59{ 60 return 0; /* We don't do relocs for now... */ 61} 62#endif 63 64#include "coffcode.h" 65 66static const bfd_target * 67ia64coff_object_p (abfd) 68 bfd *abfd; 69{ 70#ifdef COFF_IMAGE_WITH_PE 71 { 72 struct external_PEI_DOS_hdr dos_hdr; 73 struct external_PEI_IMAGE_hdr image_hdr; 74 file_ptr offset; 75 76 if (bfd_seek (abfd, 0x00, SEEK_SET) != 0 77 || bfd_read (&dos_hdr, 1, sizeof (dos_hdr), abfd) 78 != sizeof (dos_hdr)) 79 { 80 if (bfd_get_error () != bfd_error_system_call) 81 bfd_set_error (bfd_error_wrong_format); 82 return NULL; 83 } 84 85 /* There are really two magic numbers involved; the magic number 86 that says this is a NT executable (PEI) and the magic number 87 that determines the architecture. The former is DOSMAGIC, 88 stored in the e_magic field. The latter is stored in the 89 f_magic field. If the NT magic number isn't valid, the 90 architecture magic number could be mimicked by some other 91 field (specifically, the number of relocs in section 3). Since 92 this routine can only be called correctly for a PEI file, check 93 the e_magic number here, and, if it doesn't match, clobber the 94 f_magic number so that we don't get a false match. */ 95 if (bfd_h_get_16 (abfd, (bfd_byte *) dos_hdr.e_magic) != DOSMAGIC) 96 { 97 bfd_set_error (bfd_error_wrong_format); 98 return NULL; 99 } 100 101 offset = bfd_h_get_32 (abfd, (bfd_byte *) dos_hdr.e_lfanew); 102 if (bfd_seek (abfd, (file_ptr) offset, SEEK_SET) != 0 103 || bfd_read (&image_hdr, 1, sizeof (image_hdr), abfd) 104 != sizeof (image_hdr)) 105 { 106 if (bfd_get_error () != bfd_error_system_call) 107 bfd_set_error (bfd_error_wrong_format); 108 return NULL; 109 } 110 111 if (bfd_h_get_32 (abfd, (bfd_byte *) image_hdr.nt_signature) 112 != 0x4550) 113 { 114 bfd_set_error (bfd_error_wrong_format); 115 return NULL; 116 } 117 118 /* Here is the hack. coff_object_p wants to read filhsz bytes to 119 pick up the COFF header for PE, see "struct external_PEI_filehdr" 120 in include/coff/pe.h. We adjust so that that will work. */ 121 if (bfd_seek (abfd, 122 (file_ptr) (offset - sizeof (dos_hdr)), 123 SEEK_SET) 124 != 0) 125 { 126 if (bfd_get_error () != bfd_error_system_call) 127 bfd_set_error (bfd_error_wrong_format); 128 return NULL; 129 } 130 } 131#endif 132 133 return coff_object_p (abfd); 134} 135 136const bfd_target 137#ifdef TARGET_SYM 138 TARGET_SYM = 139#else 140 ia64coff_vec = 141#endif 142{ 143#ifdef TARGET_NAME 144 TARGET_NAME, 145#else 146 "coff-ia64", /* name */ 147#endif 148 bfd_target_coff_flavour, 149 BFD_ENDIAN_LITTLE, /* data byte order is little */ 150 BFD_ENDIAN_LITTLE, /* header byte order is little */ 151 152 (HAS_RELOC | EXEC_P | /* object flags */ 153 HAS_LINENO | HAS_DEBUG | 154 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), 155 156#ifndef COFF_WITH_PE 157 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */ 158 | SEC_CODE | SEC_DATA), 159#else 160 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */ 161 | SEC_CODE | SEC_DATA 162 | SEC_LINK_ONCE | SEC_LINK_DUPLICATES), 163#endif 164 165#ifdef TARGET_UNDERSCORE 166 TARGET_UNDERSCORE, /* leading underscore */ 167#else 168 0, /* leading underscore */ 169#endif 170 '/', /* ar_pad_char */ 171 15, /* ar_max_namelen */ 172 173 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, /* data */ 176 bfd_getl64, bfd_getl_signed_64, bfd_putl64, 177 bfd_getl32, bfd_getl_signed_32, bfd_putl32, 178 bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */ 179 180/* Note that we allow an object file to be treated as a core file as well. */ 181 {_bfd_dummy_target, ia64coff_object_p, /* bfd_check_format */ 182 bfd_generic_archive_p, ia64coff_object_p}, 183 {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */ 184 bfd_false}, 185 {bfd_false, coff_write_object_contents, /* bfd_write_contents */ 186 _bfd_write_archive_contents, bfd_false}, 187 188 BFD_JUMP_TABLE_GENERIC (coff), 189 BFD_JUMP_TABLE_COPY (coff), 190 BFD_JUMP_TABLE_CORE (_bfd_nocore), 191 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), 192 BFD_JUMP_TABLE_SYMBOLS (coff), 193 BFD_JUMP_TABLE_RELOCS (coff), 194 BFD_JUMP_TABLE_WRITE (coff), 195 BFD_JUMP_TABLE_LINK (coff), 196 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), 197 198 NULL, 199 200 COFF_SWAP_TABLE 201}; 202