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 #define netbsd_core_file_matches_executable_p generic_core_file_matches_executable_p
46
47 struct netbsd_core_struct
48 {
49 struct core core;
50 } *rawptr;
51
52 /* Handle NetBSD-style core dump file. */
53
54 static const bfd_target *
netbsd_core_file_p(bfd * abfd)55 netbsd_core_file_p (bfd *abfd)
56 {
57 int val;
58 unsigned i;
59 file_ptr offset;
60 asection *asect;
61 struct core core;
62 struct coreseg coreseg;
63 bfd_size_type amt = sizeof core;
64
65 val = bfd_bread (&core, amt, abfd);
66 if (val != sizeof core)
67 {
68 /* Too small to be a core file. */
69 bfd_set_error (bfd_error_wrong_format);
70 return 0;
71 }
72
73 if (CORE_GETMAGIC (core) != COREMAGIC)
74 {
75 bfd_set_error (bfd_error_wrong_format);
76 return 0;
77 }
78
79 amt = sizeof (struct netbsd_core_struct);
80 rawptr = (struct netbsd_core_struct *) bfd_zalloc (abfd, amt);
81 if (rawptr == NULL)
82 return 0;
83
84 rawptr->core = core;
85 abfd->tdata.netbsd_core_data = rawptr;
86
87 offset = core.c_hdrsize;
88 for (i = 0; i < core.c_nseg; i++)
89 {
90 const char *sname;
91 flagword flags;
92
93 if (bfd_seek (abfd, offset, SEEK_SET) != 0)
94 goto punt;
95
96 val = bfd_bread (&coreseg, sizeof coreseg, abfd);
97 if (val != sizeof coreseg)
98 {
99 bfd_set_error (bfd_error_file_truncated);
100 goto punt;
101 }
102 if (CORE_GETMAGIC (coreseg) != CORESEGMAGIC)
103 {
104 bfd_set_error (bfd_error_wrong_format);
105 goto punt;
106 }
107
108 offset += core.c_seghdrsize;
109
110 switch (CORE_GETFLAG (coreseg))
111 {
112 case CORE_CPU:
113 sname = ".reg";
114 flags = SEC_ALLOC + SEC_HAS_CONTENTS;
115 break;
116 case CORE_DATA:
117 sname = ".data";
118 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
119 break;
120 case CORE_STACK:
121 sname = ".stack";
122 flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
123 break;
124 default:
125 sname = ".unknown";
126 flags = SEC_ALLOC + SEC_HAS_CONTENTS;
127 break;
128 }
129 asect = bfd_make_section_anyway (abfd, sname);
130 if (asect == NULL)
131 goto punt;
132
133 asect->flags = flags;
134 asect->size = coreseg.c_size;
135 asect->vma = coreseg.c_addr;
136 asect->filepos = offset;
137 asect->alignment_power = 2;
138
139 if (CORE_GETFLAG (coreseg) == CORE_CPU)
140 {
141 bfd_size_type wcookie_offset;
142
143 switch (CORE_GETMID (core))
144 {
145 case M_SPARC_NETBSD:
146 wcookie_offset = SPARC_WCOOKIE_OFFSET;
147 break;
148 case M_SPARC64_OPENBSD:
149 wcookie_offset = SPARC64_WCOOKIE_OFFSET;
150 break;
151 default:
152 wcookie_offset = 0;
153 break;
154 }
155
156 if (wcookie_offset > 0 && coreseg.c_size > wcookie_offset)
157 {
158 /* Truncate the .reg section. */
159 asect->size = wcookie_offset;
160
161 /* And create the .wcookie section. */
162 asect = bfd_make_section_anyway (abfd, ".wcookie");
163 if (asect == NULL)
164 goto punt;
165
166 asect->flags = SEC_ALLOC + SEC_HAS_CONTENTS;
167 asect->size = coreseg.c_size - wcookie_offset;
168 asect->vma = 0;
169 asect->filepos = offset + wcookie_offset;
170 asect->alignment_power = 2;
171 }
172 }
173
174 offset += coreseg.c_size;
175 }
176
177 /* Set architecture from machine ID. */
178 switch (CORE_GETMID (core))
179 {
180 case M_ALPHA_NETBSD:
181 bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0);
182 break;
183
184 case M_ARM6_NETBSD:
185 bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_3);
186 break;
187
188 case M_X86_64_NETBSD:
189 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64);
190 break;
191
192 case M_386_NETBSD:
193 bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386);
194 break;
195
196 case M_68K_NETBSD:
197 case M_68K4K_NETBSD:
198 bfd_default_set_arch_mach (abfd, bfd_arch_m68k, 0);
199 break;
200
201 case M_88K_OPENBSD:
202 bfd_default_set_arch_mach (abfd, bfd_arch_m88k, 0);
203 break;
204
205 case M_HPPA_OPENBSD:
206 bfd_default_set_arch_mach (abfd, bfd_arch_hppa, bfd_mach_hppa11);
207 break;
208
209 case M_POWERPC_NETBSD:
210 bfd_default_set_arch_mach (abfd, bfd_arch_powerpc, bfd_mach_ppc);
211 break;
212
213 case M_SPARC_NETBSD:
214 bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
215 break;
216
217 case M_SPARC64_NETBSD:
218 case M_SPARC64_OPENBSD:
219 bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc_v9);
220 break;
221
222 case M_VAX_NETBSD:
223 case M_VAX4K_NETBSD:
224 bfd_default_set_arch_mach (abfd, bfd_arch_vax, 0);
225 break;
226 }
227
228 /* OK, we believe you. You're a core file (sure, sure). */
229 return abfd->xvec;
230
231 punt:
232 bfd_release (abfd, abfd->tdata.any);
233 abfd->tdata.any = NULL;
234 bfd_section_list_clear (abfd);
235 return 0;
236 }
237
238 static char*
netbsd_core_file_failing_command(bfd * abfd)239 netbsd_core_file_failing_command (bfd *abfd)
240 {
241 /*return core_command (abfd);*/
242 return abfd->tdata.netbsd_core_data->core.c_name;
243 }
244
245 static int
netbsd_core_file_failing_signal(bfd * abfd)246 netbsd_core_file_failing_signal (bfd *abfd)
247 {
248 /*return core_signal (abfd);*/
249 return abfd->tdata.netbsd_core_data->core.c_signo;
250 }
251
252 /* If somebody calls any byte-swapping routines, shoot them. */
253
254 static void
swap_abort(void)255 swap_abort (void)
256 {
257 /* This way doesn't require any declaration for ANSI to fuck up. */
258 abort ();
259 }
260
261 #define NO_GET ((bfd_vma (*) (const void *)) swap_abort)
262 #define NO_PUT ((void (*) (bfd_vma, void *)) swap_abort)
263 #define NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort)
264 #define NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort)
265 #define NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort)
266 #define NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort)
267
268 const bfd_target netbsd_core_vec =
269 {
270 "netbsd-core",
271 bfd_target_unknown_flavour,
272 BFD_ENDIAN_UNKNOWN, /* Target byte order. */
273 BFD_ENDIAN_UNKNOWN, /* Target headers byte order. */
274 (HAS_RELOC | EXEC_P | /* Object flags. */
275 HAS_LINENO | HAS_DEBUG |
276 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
277 (SEC_HAS_CONTENTS | /* Section flags. */
278 SEC_ALLOC | SEC_LOAD | SEC_RELOC),
279 0, /* Symbol prefix. */
280 ' ', /* ar_pad_char. */
281 16, /* ar_max_namelen. */
282 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit data. */
283 NO_GET, NO_GETS, NO_PUT, /* 32 bit data. */
284 NO_GET, NO_GETS, NO_PUT, /* 16 bit data. */
285 NO_GET64, NO_GETS64, NO_PUT64, /* 64 bit hdrs. */
286 NO_GET, NO_GETS, NO_PUT, /* 32 bit hdrs. */
287 NO_GET, NO_GETS, NO_PUT, /* 16 bit hdrs. */
288
289 { /* bfd_check_format. */
290 _bfd_dummy_target, /* Unknown format. */
291 _bfd_dummy_target, /* Object file. */
292 _bfd_dummy_target, /* Archive. */
293 netbsd_core_file_p /* A core file. */
294 },
295 { /* bfd_set_format. */
296 bfd_false, bfd_false,
297 bfd_false, bfd_false
298 },
299 { /* bfd_write_contents. */
300 bfd_false, bfd_false,
301 bfd_false, bfd_false
302 },
303
304 BFD_JUMP_TABLE_GENERIC (_bfd_generic),
305 BFD_JUMP_TABLE_COPY (_bfd_generic),
306 BFD_JUMP_TABLE_CORE (netbsd),
307 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
308 BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
309 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
310 BFD_JUMP_TABLE_WRITE (_bfd_generic),
311 BFD_JUMP_TABLE_LINK (_bfd_nolink),
312 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
313
314 NULL,
315
316 (PTR) 0 /* Backend_data. */
317 };
318