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[binutils.git] / bfd / coff-ia64.c
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1 /* BFD back-end for HP/Intel IA-64 COFF files.
2 Copyright 1999, 2000, 2001, 2002, 2007, 2008
3 Free Software Foundation, Inc.
4 Contributed by David Mosberger <davidm@hpl.hp.com>
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
23 #include "sysdep.h"
24 #include "bfd.h"
25 #include "libbfd.h"
26 #include "coff/ia64.h"
27 #include "coff/internal.h"
28 #include "coff/pe.h"
29 #include "libcoff.h"
31 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2)
32 /* The page size is a guess based on ELF. */
34 #define COFF_PAGE_SIZE 0x1000
36 static reloc_howto_type howto_table[] =
38 EMPTY_HOWTO (0),
41 #define BADMAG(x) IA64BADMAG(x)
42 #define IA64 1 /* Customize coffcode.h */
44 #ifdef COFF_WITH_pep
45 # undef AOUTSZ
46 # define AOUTSZ PEPAOUTSZ
47 # define PEAOUTHDR PEPAOUTHDR
48 #endif
50 #define RTYPE2HOWTO(cache_ptr, dst) \
51 (cache_ptr)->howto = howto_table + (dst)->r_type;
53 #ifdef COFF_WITH_PE
54 /* Return TRUE if this relocation should
55 appear in the output .reloc section. */
57 static bfd_boolean in_reloc_p PARAMS ((bfd *, reloc_howto_type *));
59 static bfd_boolean
60 in_reloc_p(abfd, howto)
61 bfd * abfd ATTRIBUTE_UNUSED;
62 reloc_howto_type *howto ATTRIBUTE_UNUSED;
64 return FALSE; /* We don't do relocs for now... */
66 #endif
68 #ifndef bfd_pe_print_pdata
69 #define bfd_pe_print_pdata NULL
70 #endif
72 #include "coffcode.h"
74 static const bfd_target *ia64coff_object_p PARAMS ((bfd *));
76 static const bfd_target *
77 ia64coff_object_p (abfd)
78 bfd *abfd;
80 #ifdef COFF_IMAGE_WITH_PE
82 struct external_PEI_DOS_hdr dos_hdr;
83 struct external_PEI_IMAGE_hdr image_hdr;
84 file_ptr offset;
86 if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0
87 || (bfd_bread (&dos_hdr, (bfd_size_type) sizeof (dos_hdr), abfd)
88 != sizeof (dos_hdr)))
90 if (bfd_get_error () != bfd_error_system_call)
91 bfd_set_error (bfd_error_wrong_format);
92 return NULL;
95 /* There are really two magic numbers involved; the magic number
96 that says this is a NT executable (PEI) and the magic number
97 that determines the architecture. The former is DOSMAGIC,
98 stored in the e_magic field. The latter is stored in the
99 f_magic field. If the NT magic number isn't valid, the
100 architecture magic number could be mimicked by some other
101 field (specifically, the number of relocs in section 3). Since
102 this routine can only be called correctly for a PEI file, check
103 the e_magic number here, and, if it doesn't match, clobber the
104 f_magic number so that we don't get a false match. */
105 if (H_GET_16 (abfd, dos_hdr.e_magic) != DOSMAGIC)
107 bfd_set_error (bfd_error_wrong_format);
108 return NULL;
111 offset = H_GET_32 (abfd, dos_hdr.e_lfanew);
112 if (bfd_seek (abfd, offset, SEEK_SET) != 0
113 || (bfd_bread (&image_hdr, (bfd_size_type) sizeof (image_hdr), abfd)
114 != sizeof (image_hdr)))
116 if (bfd_get_error () != bfd_error_system_call)
117 bfd_set_error (bfd_error_wrong_format);
118 return NULL;
121 if (H_GET_32 (abfd, image_hdr.nt_signature)
122 != 0x4550)
124 bfd_set_error (bfd_error_wrong_format);
125 return NULL;
128 /* Here is the hack. coff_object_p wants to read filhsz bytes to
129 pick up the COFF header for PE, see "struct external_PEI_filehdr"
130 in include/coff/pe.h. We adjust so that that will work. */
131 if (bfd_seek (abfd, offset - sizeof (dos_hdr), SEEK_SET) != 0)
133 if (bfd_get_error () != bfd_error_system_call)
134 bfd_set_error (bfd_error_wrong_format);
135 return NULL;
138 #endif
140 return coff_object_p (abfd);
143 const bfd_target
144 #ifdef TARGET_SYM
145 TARGET_SYM =
146 #else
147 ia64coff_vec =
148 #endif
150 #ifdef TARGET_NAME
151 TARGET_NAME,
152 #else
153 "coff-ia64", /* name */
154 #endif
155 bfd_target_coff_flavour,
156 BFD_ENDIAN_LITTLE, /* data byte order is little */
157 BFD_ENDIAN_LITTLE, /* header byte order is little */
159 (HAS_RELOC | EXEC_P | /* object flags */
160 HAS_LINENO | HAS_DEBUG |
161 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
163 #ifndef COFF_WITH_PE
164 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */
165 | SEC_CODE | SEC_DATA),
166 #else
167 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC /* section flags */
168 | SEC_CODE | SEC_DATA
169 | SEC_LINK_ONCE | SEC_LINK_DUPLICATES),
170 #endif
172 #ifdef TARGET_UNDERSCORE
173 TARGET_UNDERSCORE, /* leading underscore */
174 #else
175 0, /* leading underscore */
176 #endif
177 '/', /* ar_pad_char */
178 15, /* ar_max_namelen */
180 bfd_getl64, bfd_getl_signed_64, bfd_putl64,
181 bfd_getl32, bfd_getl_signed_32, bfd_putl32,
182 bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
183 bfd_getl64, bfd_getl_signed_64, bfd_putl64,
184 bfd_getl32, bfd_getl_signed_32, bfd_putl32,
185 bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
187 /* Note that we allow an object file to be treated as a core file as well. */
188 {_bfd_dummy_target, ia64coff_object_p, /* bfd_check_format */
189 bfd_generic_archive_p, ia64coff_object_p},
190 {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
191 bfd_false},
192 {bfd_false, coff_write_object_contents, /* bfd_write_contents */
193 _bfd_write_archive_contents, bfd_false},
195 BFD_JUMP_TABLE_GENERIC (coff),
196 BFD_JUMP_TABLE_COPY (coff),
197 BFD_JUMP_TABLE_CORE (_bfd_nocore),
198 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
199 BFD_JUMP_TABLE_SYMBOLS (coff),
200 BFD_JUMP_TABLE_RELOCS (coff),
201 BFD_JUMP_TABLE_WRITE (coff),
202 BFD_JUMP_TABLE_LINK (coff),
203 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
205 NULL,
207 COFF_SWAP_TABLE