1 /* BFD back-end for OSF/1 core files.
2 Copyright 1993, 1994, 1995, 1998, 1999, 2001, 2002, 2003, 2004
3 Free Software Foundation, Inc.
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 /* This file can only be compiled on systems which use OSF/1 style
22 core files. */
23
24 #include "bfd.h"
25 #include "sysdep.h"
26 #include "libbfd.h"
27
28 #include <sys/user.h>
29 #include <sys/core.h>
30
31 /* forward declarations */
32
33 static asection *make_bfd_asection
34 PARAMS ((bfd *, const char *, flagword, bfd_size_type, bfd_vma, file_ptr));
35 static const bfd_target *osf_core_core_file_p
36 PARAMS ((bfd *));
37 static char *osf_core_core_file_failing_command
38 PARAMS ((bfd *));
39 static int osf_core_core_file_failing_signal
40 PARAMS ((bfd *));
41 static bfd_boolean osf_core_core_file_matches_executable_p
42 PARAMS ((bfd *, bfd *));
43 static void swap_abort
44 PARAMS ((void));
45
46 /* These are stored in the bfd's tdata */
47
48 struct osf_core_struct
49 {
50 int sig;
51 char cmd[MAXCOMLEN + 1];
52 };
53
54 #define core_hdr(bfd) ((bfd)->tdata.osf_core_data)
55 #define core_signal(bfd) (core_hdr(bfd)->sig)
56 #define core_command(bfd) (core_hdr(bfd)->cmd)
57
58 static asection *
make_bfd_asection(abfd,name,flags,_raw_size,vma,filepos)59 make_bfd_asection (abfd, name, flags, _raw_size, vma, filepos)
60 bfd *abfd;
61 const char *name;
62 flagword flags;
63 bfd_size_type _raw_size;
64 bfd_vma vma;
65 file_ptr filepos;
66 {
67 asection *asect;
68
69 asect = bfd_make_section_anyway (abfd, name);
70 if (!asect)
71 return NULL;
72
73 asect->flags = flags;
74 asect->_raw_size = _raw_size;
75 asect->vma = vma;
76 asect->filepos = filepos;
77 asect->alignment_power = 8;
78
79 return asect;
80 }
81
82 static const bfd_target *
osf_core_core_file_p(abfd)83 osf_core_core_file_p (abfd)
84 bfd *abfd;
85 {
86 int val;
87 int i;
88 char *secname;
89 struct core_filehdr core_header;
90 bfd_size_type amt;
91
92 amt = sizeof core_header;
93 val = bfd_bread ((PTR) &core_header, amt, abfd);
94 if (val != sizeof core_header)
95 return NULL;
96
97 if (strncmp (core_header.magic, "Core", 4) != 0)
98 return NULL;
99
100 core_hdr (abfd) = (struct osf_core_struct *)
101 bfd_zalloc (abfd, (bfd_size_type) sizeof (struct osf_core_struct));
102 if (!core_hdr (abfd))
103 return NULL;
104
105 strncpy (core_command (abfd), core_header.name, MAXCOMLEN + 1);
106 core_signal (abfd) = core_header.signo;
107
108 for (i = 0; i < core_header.nscns; i++)
109 {
110 struct core_scnhdr core_scnhdr;
111 flagword flags;
112
113 amt = sizeof core_scnhdr;
114 val = bfd_bread ((PTR) &core_scnhdr, amt, abfd);
115 if (val != sizeof core_scnhdr)
116 break;
117
118 /* Skip empty sections. */
119 if (core_scnhdr.size == 0 || core_scnhdr.scnptr == 0)
120 continue;
121
122 switch (core_scnhdr.scntype)
123 {
124 case SCNRGN:
125 secname = ".data";
126 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
127 break;
128 case SCNSTACK:
129 secname = ".stack";
130 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
131 break;
132 case SCNREGS:
133 secname = ".reg";
134 flags = SEC_HAS_CONTENTS;
135 break;
136 default:
137 (*_bfd_error_handler) (_("Unhandled OSF/1 core file section type %d\n"),
138 core_scnhdr.scntype);
139 continue;
140 }
141
142 if (!make_bfd_asection (abfd, secname, flags,
143 (bfd_size_type) core_scnhdr.size,
144 (bfd_vma) core_scnhdr.vaddr,
145 (file_ptr) core_scnhdr.scnptr))
146 goto fail;
147 }
148
149 /* OK, we believe you. You're a core file (sure, sure). */
150
151 return abfd->xvec;
152
153 fail:
154 bfd_release (abfd, core_hdr (abfd));
155 core_hdr (abfd) = NULL;
156 bfd_section_list_clear (abfd);
157 return NULL;
158 }
159
160 static char *
osf_core_core_file_failing_command(abfd)161 osf_core_core_file_failing_command (abfd)
162 bfd *abfd;
163 {
164 return core_command (abfd);
165 }
166
167 static int
osf_core_core_file_failing_signal(abfd)168 osf_core_core_file_failing_signal (abfd)
169 bfd *abfd;
170 {
171 return core_signal (abfd);
172 }
173
174 static bfd_boolean
osf_core_core_file_matches_executable_p(core_bfd,exec_bfd)175 osf_core_core_file_matches_executable_p (core_bfd, exec_bfd)
176 bfd *core_bfd ATTRIBUTE_UNUSED;
177 bfd *exec_bfd ATTRIBUTE_UNUSED;
178 {
179 return TRUE; /* FIXME, We have no way of telling at this point */
180 }
181
182 /* If somebody calls any byte-swapping routines, shoot them. */
183 static void
swap_abort()184 swap_abort()
185 {
186 abort(); /* This way doesn't require any declaration for ANSI to fuck up */
187 }
188
189 #define NO_GET ((bfd_vma (*) (const void *)) swap_abort)
190 #define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort)
191 #define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort)
192 #define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort)
193 #define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort)
194 #define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort)
195
196 const bfd_target osf_core_vec =
197 {
198 "osf-core",
199 bfd_target_unknown_flavour,
200 BFD_ENDIAN_LITTLE, /* target byte order */
201 BFD_ENDIAN_LITTLE, /* target headers byte order */
202 (HAS_RELOC | EXEC_P | /* object flags */
203 HAS_LINENO | HAS_DEBUG |
204 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
205 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
206 0, /* symbol prefix */
207 ' ', /* ar_pad_char */
208 16, /* ar_max_namelen */
209 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit data */
210 NO_GET, NO_GETS, NO_PUT, /* 32 bit data */
211 NO_GET, NO_GETS, NO_PUT, /* 16 bit data */
212 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit hdrs */
213 NO_GET, NO_GETS, NO_PUT, /* 32 bit hdrs */
214 NO_GET, NO_GETS, NO_PUT, /* 16 bit hdrs */
215
216 { /* bfd_check_format */
217 _bfd_dummy_target, /* unknown format */
218 _bfd_dummy_target, /* object file */
219 _bfd_dummy_target, /* archive */
220 osf_core_core_file_p /* a core file */
221 },
222 { /* bfd_set_format */
223 bfd_false, bfd_false,
224 bfd_false, bfd_false
225 },
226 { /* bfd_write_contents */
227 bfd_false, bfd_false,
228 bfd_false, bfd_false
229 },
230
231 BFD_JUMP_TABLE_GENERIC (_bfd_generic),
232 BFD_JUMP_TABLE_COPY (_bfd_generic),
233 BFD_JUMP_TABLE_CORE (osf_core),
234 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
235 BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
236 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
237 BFD_JUMP_TABLE_WRITE (_bfd_generic),
238 BFD_JUMP_TABLE_LINK (_bfd_nolink),
239 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
240
241 NULL,
242
243 (PTR) 0 /* backend_data */
244 };
245