merge from gcc
[binutils.git] / bfd / coff-ia64.c
blobe8d6674c40c8c640f3c5c31315c6eb2ca5191fc8
1 /* BFD back-end for HP/Intel IA-64 COFF files.
2 Copyright 1999, 2000, 2001, 2002, 2007 Free Software Foundation, Inc.
3 Contributed by David Mosberger <davidm@hpl.hp.com>
5 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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. */
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"
30 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2)
31 /* The page size is a guess based on ELF. */
33 #define COFF_PAGE_SIZE 0x1000
35 static reloc_howto_type howto_table[] =
37 EMPTY_HOWTO (0),
40 #define BADMAG(x) IA64BADMAG(x)
41 #define IA64 1 /* Customize coffcode.h */
43 #ifdef COFF_WITH_pep
44 # undef AOUTSZ
45 # define AOUTSZ PEPAOUTSZ
46 # define PEAOUTHDR PEPAOUTHDR
47 #endif
49 #define RTYPE2HOWTO(cache_ptr, dst) \
50 (cache_ptr)->howto = howto_table + (dst)->r_type;
52 #ifdef COFF_WITH_PE
53 /* Return TRUE if this relocation should
54 appear in the output .reloc section. */
56 static bfd_boolean in_reloc_p PARAMS ((bfd *, reloc_howto_type *));
58 static bfd_boolean
59 in_reloc_p(abfd, howto)
60 bfd * abfd ATTRIBUTE_UNUSED;
61 reloc_howto_type *howto ATTRIBUTE_UNUSED;
63 return FALSE; /* We don't do relocs for now... */
65 #endif
67 #include "coffcode.h"
69 static const bfd_target *ia64coff_object_p PARAMS ((bfd *));
71 static const bfd_target *
72 ia64coff_object_p (abfd)
73 bfd *abfd;
75 #ifdef COFF_IMAGE_WITH_PE
77 struct external_PEI_DOS_hdr dos_hdr;
78 struct external_PEI_IMAGE_hdr image_hdr;
79 file_ptr offset;
81 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
82 || (bfd_bread (&dos_hdr, (bfd_size_type) sizeof (dos_hdr), abfd)
83 != sizeof (dos_hdr)))
85 if (bfd_get_error () != bfd_error_system_call)
86 bfd_set_error (bfd_error_wrong_format);
87 return NULL;
90 /* There are really two magic numbers involved; the magic number
91 that says this is a NT executable (PEI) and the magic number
92 that determines the architecture. The former is DOSMAGIC,
93 stored in the e_magic field. The latter is stored in the
94 f_magic field. If the NT magic number isn't valid, the
95 architecture magic number could be mimicked by some other
96 field (specifically, the number of relocs in section 3). Since
97 this routine can only be called correctly for a PEI file, check
98 the e_magic number here, and, if it doesn't match, clobber the
99 f_magic number so that we don't get a false match. */
100 if (H_GET_16 (abfd, dos_hdr.e_magic) != DOSMAGIC)
102 bfd_set_error (bfd_error_wrong_format);
103 return NULL;
106 offset = H_GET_32 (abfd, dos_hdr.e_lfanew);
107 if (bfd_seek (abfd, offset, SEEK_SET) != 0
108 || (bfd_bread (&image_hdr, (bfd_size_type) sizeof (image_hdr), abfd)
109 != sizeof (image_hdr)))
111 if (bfd_get_error () != bfd_error_system_call)
112 bfd_set_error (bfd_error_wrong_format);
113 return NULL;
116 if (H_GET_32 (abfd, image_hdr.nt_signature)
117 != 0x4550)
119 bfd_set_error (bfd_error_wrong_format);
120 return NULL;
123 /* Here is the hack. coff_object_p wants to read filhsz bytes to
124 pick up the COFF header for PE, see "struct external_PEI_filehdr"
125 in include/coff/pe.h. We adjust so that that will work. */
126 if (bfd_seek (abfd, offset - sizeof (dos_hdr), SEEK_SET) != 0)
128 if (bfd_get_error () != bfd_error_system_call)
129 bfd_set_error (bfd_error_wrong_format);
130 return NULL;
133 #endif
135 return coff_object_p (abfd);
138 const bfd_target
139 #ifdef TARGET_SYM
140 TARGET_SYM =
141 #else
142 ia64coff_vec =
143 #endif
145 #ifdef TARGET_NAME
146 TARGET_NAME,
147 #else
148 "coff-ia64", /* name */
149 #endif
150 bfd_target_coff_flavour,
151 BFD_ENDIAN_LITTLE, /* data byte order is little */
152 BFD_ENDIAN_LITTLE, /* header byte order is little */
154 (HAS_RELOC | EXEC_P | /* object flags */
155 HAS_LINENO | HAS_DEBUG |
156 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
158 #ifndef COFF_WITH_PE
159 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */
160 | SEC_CODE | SEC_DATA),
161 #else
162 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */
163 | SEC_CODE | SEC_DATA
164 | SEC_LINK_ONCE | SEC_LINK_DUPLICATES),
165 #endif
167 #ifdef TARGET_UNDERSCORE
168 TARGET_UNDERSCORE, /* leading underscore */
169 #else
170 0, /* leading underscore */
171 #endif
172 '/', /* ar_pad_char */
173 15, /* ar_max_namelen */
175 bfd_getl64, bfd_getl_signed_64, bfd_putl64,
176 bfd_getl32, bfd_getl_signed_32, bfd_putl32,
177 bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
178 bfd_getl64, bfd_getl_signed_64, bfd_putl64,
179 bfd_getl32, bfd_getl_signed_32, bfd_putl32,
180 bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
182 /* Note that we allow an object file to be treated as a core file as well. */
183 {_bfd_dummy_target, ia64coff_object_p, /* bfd_check_format */
184 bfd_generic_archive_p, ia64coff_object_p},
185 {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
186 bfd_false},
187 {bfd_false, coff_write_object_contents, /* bfd_write_contents */
188 _bfd_write_archive_contents, bfd_false},
190 BFD_JUMP_TABLE_GENERIC (coff),
191 BFD_JUMP_TABLE_COPY (coff),
192 BFD_JUMP_TABLE_CORE (_bfd_nocore),
193 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
194 BFD_JUMP_TABLE_SYMBOLS (coff),
195 BFD_JUMP_TABLE_RELOCS (coff),
196 BFD_JUMP_TABLE_WRITE (coff),
197 BFD_JUMP_TABLE_LINK (coff),
198 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
200 NULL,
202 COFF_SWAP_TABLE