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[binutils.git] / bfd / osf-core.c
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1 /* BFD back-end for OSF/1 core files.
2 Copyright 1993, 1994, 1995, 1998, 1999, 2001, 2002, 2003, 2004, 2006,
3 2007 Free Software Foundation, Inc.
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. */
23 /* This file can only be compiled on systems which use OSF/1 style
24 core files. */
26 #include "sysdep.h"
27 #include "bfd.h"
28 #include "libbfd.h"
30 #include <sys/user.h>
31 #ifdef OSF_CORE
32 #include <sys/core.h>
33 #endif
35 /* forward declarations */
37 static asection *make_bfd_asection
38 PARAMS ((bfd *, const char *, flagword, bfd_size_type, bfd_vma, file_ptr));
39 static const bfd_target *osf_core_core_file_p
40 PARAMS ((bfd *));
41 static char *osf_core_core_file_failing_command
42 PARAMS ((bfd *));
43 static int osf_core_core_file_failing_signal
44 PARAMS ((bfd *));
45 #define osf_core_core_file_matches_executable_p generic_core_file_matches_executable_p
46 static void swap_abort
47 PARAMS ((void));
49 /* These are stored in the bfd's tdata */
51 struct osf_core_struct
53 int sig;
54 char cmd[MAXCOMLEN + 1];
57 #define core_hdr(bfd) ((bfd)->tdata.osf_core_data)
58 #define core_signal(bfd) (core_hdr(bfd)->sig)
59 #define core_command(bfd) (core_hdr(bfd)->cmd)
61 static asection *
62 make_bfd_asection (abfd, name, flags, size, vma, filepos)
63 bfd *abfd;
64 const char *name;
65 flagword flags;
66 bfd_size_type size;
67 bfd_vma vma;
68 file_ptr filepos;
70 asection *asect;
72 asect = bfd_make_section_anyway_with_flags (abfd, name, flags);
73 if (!asect)
74 return NULL;
76 asect->size = size;
77 asect->vma = vma;
78 asect->filepos = filepos;
79 asect->alignment_power = 8;
81 return asect;
84 static const bfd_target *
85 osf_core_core_file_p (abfd)
86 bfd *abfd;
88 int val;
89 int i;
90 char *secname;
91 struct core_filehdr core_header;
92 bfd_size_type amt;
94 amt = sizeof core_header;
95 val = bfd_bread ((PTR) &core_header, amt, abfd);
96 if (val != sizeof core_header)
97 return NULL;
99 if (! CONST_STRNEQ (core_header.magic, "Core"))
100 return NULL;
102 core_hdr (abfd) = (struct osf_core_struct *)
103 bfd_zalloc (abfd, (bfd_size_type) sizeof (struct osf_core_struct));
104 if (!core_hdr (abfd))
105 return NULL;
107 strncpy (core_command (abfd), core_header.name, MAXCOMLEN + 1);
108 core_signal (abfd) = core_header.signo;
110 for (i = 0; i < core_header.nscns; i++)
112 struct core_scnhdr core_scnhdr;
113 flagword flags;
115 amt = sizeof core_scnhdr;
116 val = bfd_bread ((PTR) &core_scnhdr, amt, abfd);
117 if (val != sizeof core_scnhdr)
118 break;
120 /* Skip empty sections. */
121 if (core_scnhdr.size == 0 || core_scnhdr.scnptr == 0)
122 continue;
124 switch (core_scnhdr.scntype)
126 case SCNRGN:
127 secname = ".data";
128 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
129 break;
130 case SCNSTACK:
131 secname = ".stack";
132 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
133 break;
134 case SCNREGS:
135 secname = ".reg";
136 flags = SEC_HAS_CONTENTS;
137 break;
138 default:
139 (*_bfd_error_handler) (_("Unhandled OSF/1 core file section type %d\n"),
140 core_scnhdr.scntype);
141 continue;
144 if (!make_bfd_asection (abfd, secname, flags,
145 (bfd_size_type) core_scnhdr.size,
146 (bfd_vma) core_scnhdr.vaddr,
147 (file_ptr) core_scnhdr.scnptr))
148 goto fail;
151 /* OK, we believe you. You're a core file (sure, sure). */
153 return abfd->xvec;
155 fail:
156 bfd_release (abfd, core_hdr (abfd));
157 core_hdr (abfd) = NULL;
158 bfd_section_list_clear (abfd);
159 return NULL;
162 static char *
163 osf_core_core_file_failing_command (abfd)
164 bfd *abfd;
166 return core_command (abfd);
169 static int
170 osf_core_core_file_failing_signal (abfd)
171 bfd *abfd;
173 return core_signal (abfd);
176 /* If somebody calls any byte-swapping routines, shoot them. */
177 static void
178 swap_abort()
180 abort(); /* This way doesn't require any declaration for ANSI to fuck up */
183 #define NO_GET ((bfd_vma (*) (const void *)) swap_abort)
184 #define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort)
185 #define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort)
186 #define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort)
187 #define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort)
188 #define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort)
190 const bfd_target osf_core_vec =
192 "osf-core",
193 bfd_target_unknown_flavour,
194 BFD_ENDIAN_LITTLE, /* target byte order */
195 BFD_ENDIAN_LITTLE, /* target headers byte order */
196 (HAS_RELOC | EXEC_P | /* object flags */
197 HAS_LINENO | HAS_DEBUG |
198 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
199 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
200 0, /* symbol prefix */
201 ' ', /* ar_pad_char */
202 16, /* ar_max_namelen */
203 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit data */
204 NO_GET, NO_GETS, NO_PUT, /* 32 bit data */
205 NO_GET, NO_GETS, NO_PUT, /* 16 bit data */
206 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit hdrs */
207 NO_GET, NO_GETS, NO_PUT, /* 32 bit hdrs */
208 NO_GET, NO_GETS, NO_PUT, /* 16 bit hdrs */
210 { /* bfd_check_format */
211 _bfd_dummy_target, /* unknown format */
212 _bfd_dummy_target, /* object file */
213 _bfd_dummy_target, /* archive */
214 osf_core_core_file_p /* a core file */
216 { /* bfd_set_format */
217 bfd_false, bfd_false,
218 bfd_false, bfd_false
220 { /* bfd_write_contents */
221 bfd_false, bfd_false,
222 bfd_false, bfd_false
225 BFD_JUMP_TABLE_GENERIC (_bfd_generic),
226 BFD_JUMP_TABLE_COPY (_bfd_generic),
227 BFD_JUMP_TABLE_CORE (osf_core),
228 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
229 BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
230 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
231 BFD_JUMP_TABLE_WRITE (_bfd_generic),
232 BFD_JUMP_TABLE_LINK (_bfd_nolink),
233 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
235 NULL,
237 (PTR) 0 /* backend_data */