1 /* BFD back end for NetBSD style core files
2 Copyright 1988, 1989, 1991, 1992, 1993, 1996, 1998, 1999, 2000, 2001,
3 2002, 2003, 2004, 2005
4 Free Software Foundation, Inc.
5 Written by Paul Kranenburg, EUR
6
7 This file is part of BFD, the Binary File Descriptor library.
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
22
23 #include "bfd.h"
24 #include "sysdep.h"
25 #include "libbfd.h"
26 #include "libaout.h" /* BFD a.out internal data structures. */
27
28 #include <sys/param.h>
29 #include <sys/dir.h>
30 #include <signal.h>
31 #include <sys/core.h>
32
33 /* The machine ID for OpenBSD/sparc64 and older versions of
34 NetBSD/sparc64 overlaps with M_MIPS1. */
35 #define M_SPARC64_OPENBSD M_MIPS1
36
37 /* Offset of StackGhost cookie within `struct md_coredump' on
38 OpenBSD/sparc. */
39 #define SPARC_WCOOKIE_OFFSET 344
40
41 /* Offset of StackGhost cookie within `struct md_coredump' on
42 OpenBSD/sparc64. */
43 #define SPARC64_WCOOKIE_OFFSET 832
44
45 struct netbsd_core_struct
46 {
47 struct core core;
48 } *rawptr;
49
50 /* Handle NetBSD-style core dump file. */
51
52 static const bfd_target *
netbsd_core_file_p(bfd * abfd)53 netbsd_core_file_p (bfd *abfd)
54 {
55 int val;
56 unsigned i;
57 file_ptr offset;
58 asection *asect;
59 struct core core;
60 struct coreseg coreseg;
61 bfd_size_type amt = sizeof core;
62
63 val = bfd_bread (&core, amt, abfd);
64 if (val != sizeof core)
65 {
66 /* Too small to be a core file. */
67 bfd_set_error (bfd_error_wrong_format);
68 return 0;
69 }
70
71 if (CORE_GETMAGIC (core) != COREMAGIC)
72 {
73 bfd_set_error (bfd_error_wrong_format);
74 return 0;
75 }
76
77 amt = sizeof (struct netbsd_core_struct);
78 rawptr = (struct netbsd_core_struct *) bfd_zalloc (abfd, amt);
79 if (rawptr == NULL)
80 return 0;
81
82 rawptr->core = core;
83 abfd->tdata.netbsd_core_data = rawptr;
84
85 offset = core.c_hdrsize;
86 for (i = 0; i < core.c_nseg; i++)
87 {
88 const char *sname;
89 flagword flags;
90
91 if (bfd_seek (abfd, offset, SEEK_SET) != 0)
92 goto punt;
93
94 val = bfd_bread (&coreseg, sizeof coreseg, abfd);
95 if (val != sizeof coreseg)
96 {
97 bfd_set_error (bfd_error_file_truncated);
98 goto punt;
99 }
100 if (CORE_GETMAGIC (coreseg) != CORESEGMAGIC)
101 {
102 bfd_set_error (bfd_error_wrong_format);
103 goto punt;
104 }
105
106 offset += core.c_seghdrsize;
107
108 switch (CORE_GETFLAG (coreseg))
109 {
110 case CORE_CPU:
111 sname = ".reg";
112 flags = SEC_ALLOC + SEC_HAS_CONTENTS;
113 break;
114 case CORE_DATA:
115 sname = ".data";
116 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
117 break;
118 case CORE_STACK:
119 sname = ".stack";
120 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
121 break;
122 default:
123 sname = ".unknown";
124 flags = SEC_ALLOC + SEC_HAS_CONTENTS;
125 break;
126 }
127 asect = bfd_make_section_anyway (abfd, sname);
128 if (asect == NULL)
129 goto punt;
130
131 asect->flags = flags;
132 asect->size = coreseg.c_size;
133 asect->vma = coreseg.c_addr;
134 asect->filepos = offset;
135 asect->alignment_power = 2;
136
137 if (CORE_GETFLAG (coreseg) == CORE_CPU)
138 {
139 bfd_size_type wcookie_offset;
140
141 switch (CORE_GETMID (core))
142 {
143 case M_SPARC_NETBSD:
144 wcookie_offset = SPARC_WCOOKIE_OFFSET;
145 break;
146 case M_SPARC64_OPENBSD:
147 wcookie_offset = SPARC64_WCOOKIE_OFFSET;
148 break;
149 default:
150 wcookie_offset = 0;
151 break;
152 }
153
154 if (wcookie_offset > 0 && coreseg.c_size > wcookie_offset)
155 {
156 /* Truncate the .reg section. */
157 asect->size = wcookie_offset;
158
159 /* And create the .wcookie section. */
160 asect = bfd_make_section_anyway (abfd, ".wcookie");
161 if (asect == NULL)
162 goto punt;
163
164 asect->flags = SEC_ALLOC + SEC_HAS_CONTENTS;
165 asect->size = coreseg.c_size - wcookie_offset;
166 asect->vma = 0;
167 asect->filepos = offset + wcookie_offset;
168 asect->alignment_power = 2;
169 }
170 }
171
172 offset += coreseg.c_size;
173 }
174
175 /* Set architecture from machine ID. */
176 switch (CORE_GETMID (core))
177 {
178 case M_ALPHA_NETBSD:
179 bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0);
180 break;
181
182 case M_ARM6_NETBSD:
183 bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_3);
184 break;
185
186 case M_X86_64_NETBSD:
187 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64);
188 break;
189
190 case M_386_NETBSD:
191 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386);
192 break;
193
194 case M_68K_NETBSD:
195 case M_68K4K_NETBSD:
196 bfd_default_set_arch_mach (abfd, bfd_arch_m68k, 0);
197 break;
198
199 case M_88K_OPENBSD:
200 bfd_default_set_arch_mach (abfd, bfd_arch_m88k, 0);
201 break;
202
203 case M_HPPA_OPENBSD:
204 bfd_default_set_arch_mach (abfd, bfd_arch_hppa, bfd_mach_hppa11);
205 break;
206
207 case M_POWERPC_NETBSD:
208 bfd_default_set_arch_mach (abfd, bfd_arch_powerpc, bfd_mach_ppc);
209 break;
210
211 case M_SPARC_NETBSD:
212 bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
213 break;
214
215 case M_SPARC64_NETBSD:
216 case M_SPARC64_OPENBSD:
217 bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc_v9);
218 break;
219
220 case M_VAX_NETBSD:
221 case M_VAX4K_NETBSD:
222 bfd_default_set_arch_mach (abfd, bfd_arch_vax, 0);
223 break;
224 }
225
226 /* OK, we believe you. You're a core file (sure, sure). */
227 return abfd->xvec;
228
229 punt:
230 bfd_release (abfd, abfd->tdata.any);
231 abfd->tdata.any = NULL;
232 bfd_section_list_clear (abfd);
233 return 0;
234 }
235
236 static char*
netbsd_core_file_failing_command(bfd * abfd)237 netbsd_core_file_failing_command (bfd *abfd)
238 {
239 /*return core_command (abfd);*/
240 return abfd->tdata.netbsd_core_data->core.c_name;
241 }
242
243 static int
netbsd_core_file_failing_signal(bfd * abfd)244 netbsd_core_file_failing_signal (bfd *abfd)
245 {
246 /*return core_signal (abfd);*/
247 return abfd->tdata.netbsd_core_data->core.c_signo;
248 }
249
250 static bfd_boolean
netbsd_core_file_matches_executable_p(bfd * core_bfd ATTRIBUTE_UNUSED,bfd * exec_bfd ATTRIBUTE_UNUSED)251 netbsd_core_file_matches_executable_p (bfd *core_bfd ATTRIBUTE_UNUSED,
252 bfd *exec_bfd ATTRIBUTE_UNUSED)
253 {
254 /* FIXME, We have no way of telling at this point. */
255 return TRUE;
256 }
257
258 /* If somebody calls any byte-swapping routines, shoot them. */
259
260 static void
swap_abort(void)261 swap_abort (void)
262 {
263 /* This way doesn't require any declaration for ANSI to fuck up. */
264 abort ();
265 }
266
267 #define NO_GET ((bfd_vma (*) (const void *)) swap_abort)
268 #define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort)
269 #define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort)
270 #define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort)
271 #define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort)
272 #define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort)
273
274 const bfd_target netbsd_core_vec =
275 {
276 "netbsd-core",
277 bfd_target_unknown_flavour,
278 BFD_ENDIAN_UNKNOWN, /* Target byte order. */
279 BFD_ENDIAN_UNKNOWN, /* Target headers byte order. */
280 (HAS_RELOC | EXEC_P | /* Object flags. */
281 HAS_LINENO | HAS_DEBUG |
282 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
283 (SEC_HAS_CONTENTS | /* Section flags. */
284 SEC_ALLOC | SEC_LOAD | SEC_RELOC),
285 0, /* Symbol prefix. */
286 ' ', /* ar_pad_char. */
287 16, /* ar_max_namelen. */
288 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit data. */
289 NO_GET, NO_GETS, NO_PUT, /* 32 bit data. */
290 NO_GET, NO_GETS, NO_PUT, /* 16 bit data. */
291 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit hdrs. */
292 NO_GET, NO_GETS, NO_PUT, /* 32 bit hdrs. */
293 NO_GET, NO_GETS, NO_PUT, /* 16 bit hdrs. */
294
295 { /* bfd_check_format. */
296 _bfd_dummy_target, /* Unknown format. */
297 _bfd_dummy_target, /* Object file. */
298 _bfd_dummy_target, /* Archive. */
299 netbsd_core_file_p /* A core file. */
300 },
301 { /* bfd_set_format. */
302 bfd_false, bfd_false,
303 bfd_false, bfd_false
304 },
305 { /* bfd_write_contents. */
306 bfd_false, bfd_false,
307 bfd_false, bfd_false
308 },
309
310 BFD_JUMP_TABLE_GENERIC (_bfd_generic),
311 BFD_JUMP_TABLE_COPY (_bfd_generic),
312 BFD_JUMP_TABLE_CORE (netbsd),
313 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
314 BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
315 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
316 BFD_JUMP_TABLE_WRITE (_bfd_generic),
317 BFD_JUMP_TABLE_LINK (_bfd_nolink),
318 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
319
320 NULL,
321
322 (PTR) 0 /* Backend_data. */
323 };
324