Commit | Line | Data |
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f3f29240 JK |
1 | /* BFD back-end for CISCO crash dumps. |
2 | ||
3 | Copyright 1994 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
20 | ||
21 | #include "bfd.h" | |
22 | #include "sysdep.h" | |
23 | #include "libbfd.h" | |
1732fbd4 JK |
24 | /* core_file_failing_signal returns a host signal (this probably should |
25 | be fixed). */ | |
26 | #include <signal.h> | |
f3f29240 JK |
27 | \f |
28 | #define CRASH_INFO (0xffc) | |
29 | #define CRASH_MAGIC 0xdead1234 | |
30 | ||
31 | typedef enum { | |
32 | CRASH_REASON_NOTCRASHED = 0, | |
33 | CRASH_REASON_EXCEPTION = 1, | |
34 | CRASH_REASON_CORRUPT = 2, | |
35 | } crashreason; | |
36 | ||
37 | struct crashinfo_external | |
38 | { | |
39 | char magic[4]; /* Magic number */ | |
40 | char version[4]; /* Version number */ | |
41 | char reason[4]; /* Crash reason */ | |
42 | char cpu_vector[4]; /* CPU vector for exceptions */ | |
43 | char registers[4]; /* Pointer to saved registers */ | |
44 | char rambase[4]; /* Base of RAM (not in V1 crash info) */ | |
45 | }; | |
46 | \f | |
47 | struct cisco_core_struct | |
48 | { | |
49 | int sig; | |
50 | }; | |
51 | \f | |
52 | static bfd_target * | |
53 | cisco_core_file_p (abfd) | |
54 | bfd *abfd; | |
55 | { | |
56 | char buf[4]; | |
57 | unsigned int crashinfo_offset; | |
58 | struct crashinfo_external crashinfo; | |
59 | int nread; | |
60 | unsigned int rambase; | |
61 | sec_ptr asect; | |
62 | struct stat statbuf; | |
63 | ||
64 | if (bfd_seek (abfd, CRASH_INFO, SEEK_SET) != 0) | |
65 | return NULL; | |
66 | ||
67 | nread = bfd_read (buf, 1, 4, abfd); | |
68 | if (nread != 4) | |
69 | { | |
70 | /* Maybe the file is too small (FIXME: what about other errors). */ | |
71 | bfd_set_error (bfd_error_wrong_format); | |
72 | return NULL; | |
73 | } | |
74 | crashinfo_offset = bfd_get_32 (abfd, buf); | |
75 | ||
76 | if (bfd_seek (abfd, crashinfo_offset, SEEK_SET) != 0) | |
77 | return NULL; | |
78 | ||
79 | nread = bfd_read (&crashinfo, 1, sizeof (crashinfo), abfd); | |
80 | if (nread != sizeof (crashinfo)) | |
81 | { | |
82 | /* Maybe the file is too small (FIXME: what about other errors). */ | |
83 | bfd_set_error (bfd_error_wrong_format); | |
84 | return NULL; | |
85 | } | |
86 | ||
87 | if (bfd_stat (abfd, &statbuf) < 0) | |
88 | { | |
89 | bfd_set_error (bfd_error_system_call); | |
90 | return NULL; | |
91 | } | |
92 | ||
93 | if (bfd_get_32 (abfd, crashinfo.magic) != CRASH_MAGIC) | |
94 | { | |
95 | bfd_set_error (bfd_error_wrong_format); | |
96 | return NULL; | |
97 | } | |
98 | ||
99 | switch (bfd_get_32 (abfd, crashinfo.version)) | |
100 | { | |
101 | case 0: | |
102 | bfd_set_error (bfd_error_wrong_format); | |
103 | return NULL; | |
104 | case 1: | |
105 | rambase = 0; | |
106 | break; | |
107 | default: | |
108 | case 2: | |
109 | rambase = bfd_get_32 (abfd, crashinfo.rambase); | |
110 | break; | |
111 | } | |
112 | ||
113 | /* OK, we believe you. You're a core file. */ | |
114 | ||
326e32d7 ILT |
115 | abfd->tdata.cisco_core_data = |
116 | ((struct cisco_core_struct *) | |
117 | bfd_zmalloc (sizeof (struct cisco_core_struct))); | |
f3f29240 JK |
118 | if (abfd->tdata.cisco_core_data == NULL) |
119 | { | |
120 | bfd_set_error (bfd_error_no_memory); | |
121 | return NULL; | |
122 | } | |
123 | ||
124 | switch ((crashreason) bfd_get_32 (abfd, crashinfo.reason)) | |
125 | { | |
126 | case CRASH_REASON_NOTCRASHED: | |
127 | /* Crash file probably came from write core. */ | |
128 | abfd->tdata.cisco_core_data->sig = 0; | |
129 | break; | |
130 | case CRASH_REASON_CORRUPT: | |
131 | /* The crash context area was corrupt -- proceed with caution. | |
132 | We have no way of passing this information back to the caller. */ | |
133 | abfd->tdata.cisco_core_data->sig = 0; | |
134 | break; | |
135 | case CRASH_REASON_EXCEPTION: | |
1732fbd4 JK |
136 | /* Crash occured due to CPU exception. */ |
137 | ||
138 | /* This is 68k-specific; for MIPS we'll need to interpret | |
139 | cpu_vector differently based on the target configuration | |
140 | (since CISCO core files don't seem to have the processor | |
141 | encoded in them). */ | |
142 | ||
143 | switch (bfd_get_32 (abfd, crashinfo.cpu_vector)) | |
144 | { | |
145 | /* bus error */ | |
146 | case 2 : abfd->tdata.cisco_core_data->sig = SIGBUS; break; | |
147 | /* address error */ | |
148 | case 3 : abfd->tdata.cisco_core_data->sig = SIGBUS; break; | |
149 | /* illegal instruction */ | |
150 | case 4 : abfd->tdata.cisco_core_data->sig = SIGILL; break; | |
151 | /* zero divide */ | |
152 | case 5 : abfd->tdata.cisco_core_data->sig = SIGFPE; break; | |
153 | /* chk instruction */ | |
154 | case 6 : abfd->tdata.cisco_core_data->sig = SIGFPE; break; | |
155 | /* trapv instruction */ | |
156 | case 7 : abfd->tdata.cisco_core_data->sig = SIGFPE; break; | |
157 | /* privilege violation */ | |
158 | case 8 : abfd->tdata.cisco_core_data->sig = SIGSEGV; break; | |
159 | /* trace trap */ | |
160 | case 9 : abfd->tdata.cisco_core_data->sig = SIGTRAP; break; | |
161 | /* line 1010 emulator */ | |
162 | case 10: abfd->tdata.cisco_core_data->sig = SIGILL; break; | |
163 | /* line 1111 emulator */ | |
164 | case 11: abfd->tdata.cisco_core_data->sig = SIGILL; break; | |
165 | ||
166 | /* Coprocessor protocol violation. Using a standard MMU or FPU | |
167 | this cannot be triggered by software. Call it a SIGBUS. */ | |
168 | case 13: abfd->tdata.cisco_core_data->sig = SIGBUS; break; | |
169 | ||
170 | /* interrupt */ | |
171 | case 31: abfd->tdata.cisco_core_data->sig = SIGINT; break; | |
172 | /* breakpoint */ | |
173 | case 33: abfd->tdata.cisco_core_data->sig = SIGTRAP; break; | |
174 | ||
175 | /* floating point err */ | |
176 | case 48: abfd->tdata.cisco_core_data->sig = SIGFPE; break; | |
177 | /* floating point err */ | |
178 | case 49: abfd->tdata.cisco_core_data->sig = SIGFPE; break; | |
179 | /* zero divide */ | |
180 | case 50: abfd->tdata.cisco_core_data->sig = SIGFPE; break; | |
181 | /* underflow */ | |
182 | case 51: abfd->tdata.cisco_core_data->sig = SIGFPE; break; | |
183 | /* operand error */ | |
184 | case 52: abfd->tdata.cisco_core_data->sig = SIGFPE; break; | |
185 | /* overflow */ | |
186 | case 53: abfd->tdata.cisco_core_data->sig = SIGFPE; break; | |
187 | /* NAN */ | |
188 | case 54: abfd->tdata.cisco_core_data->sig = SIGFPE; break; | |
189 | default: | |
190 | /* "software generated"*/ | |
191 | abfd->tdata.cisco_core_data->sig = SIGEMT; | |
192 | } | |
f3f29240 JK |
193 | break; |
194 | default: | |
195 | /* Unknown crash reason. */ | |
196 | abfd->tdata.cisco_core_data->sig = 0; | |
197 | break; | |
198 | } | |
199 | ||
200 | abfd->sections = NULL; | |
201 | abfd->section_count = 0; | |
202 | ||
203 | asect = (asection *) bfd_zmalloc (sizeof (asection)); | |
204 | if (asect == NULL) | |
205 | { | |
206 | bfd_set_error (bfd_error_no_memory); | |
207 | goto error_return; | |
208 | } | |
209 | asect->name = ".reg"; | |
210 | asect->flags = SEC_ALLOC | SEC_HAS_CONTENTS; | |
211 | /* This can be bigger than the real size. Set it to the size of the whole | |
212 | core file. */ | |
213 | asect->_raw_size = statbuf.st_size; | |
214 | asect->vma = 0; | |
215 | asect->filepos = bfd_get_32 (abfd, crashinfo.registers) - rambase; | |
216 | asect->next = abfd->sections; | |
217 | abfd->sections = asect; | |
218 | ++abfd->section_count; | |
219 | ||
220 | /* There is only one section containing data from the target system's RAM. | |
221 | We call it .data. */ | |
222 | asect = (asection *) bfd_zmalloc (sizeof (asection)); | |
223 | if (asect == NULL) | |
224 | { | |
225 | bfd_set_error (bfd_error_no_memory); | |
226 | goto error_return; | |
227 | } | |
228 | asect->name = ".data"; | |
229 | asect->flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS; | |
230 | /* The size of memory is the size of the core file itself. */ | |
231 | asect->_raw_size = statbuf.st_size; | |
232 | asect->vma = rambase; | |
233 | asect->filepos = 0; | |
234 | asect->next = abfd->sections; | |
235 | abfd->sections = asect; | |
236 | ++abfd->section_count; | |
237 | ||
238 | return abfd->xvec; | |
239 | ||
240 | error_return: | |
241 | { | |
242 | sec_ptr nextsect; | |
243 | for (asect = abfd->sections; asect != NULL;) | |
244 | { | |
245 | nextsect = asect->next; | |
246 | free (asect); | |
247 | asect = nextsect; | |
248 | } | |
326e32d7 | 249 | free (abfd->tdata.cisco_core_data); |
f3f29240 JK |
250 | return NULL; |
251 | } | |
252 | } | |
253 | ||
254 | char * | |
255 | cisco_core_file_failing_command (abfd) | |
256 | bfd *abfd; | |
257 | { | |
258 | return NULL; | |
259 | } | |
260 | ||
261 | int | |
262 | cisco_core_file_failing_signal (abfd) | |
263 | bfd *abfd; | |
264 | { | |
265 | return abfd->tdata.cisco_core_data->sig; | |
266 | } | |
267 | ||
268 | boolean | |
269 | cisco_core_file_matches_executable_p (core_bfd, exec_bfd) | |
270 | bfd *core_bfd; | |
271 | bfd *exec_bfd; | |
272 | { | |
273 | return true; | |
274 | } | |
275 | \f | |
276 | /* No archive file support via this BFD */ | |
277 | #define cisco_openr_next_archived_file bfd_generic_openr_next_archived_file | |
278 | #define cisco_generic_stat_arch_elt bfd_generic_stat_arch_elt | |
279 | #define cisco_slurp_armap bfd_false | |
280 | #define cisco_slurp_extended_name_table bfd_true | |
281 | #define cisco_write_armap (boolean (*) PARAMS \ | |
282 | ((bfd *arch, unsigned int elength, struct orl *map, \ | |
283 | unsigned int orl_count, int stridx))) bfd_false | |
284 | #define cisco_truncate_arname bfd_dont_truncate_arname | |
285 | #define aout_32_openr_next_archived_file bfd_generic_openr_next_archived_file | |
286 | ||
287 | #define cisco_close_and_cleanup bfd_generic_close_and_cleanup | |
288 | #define cisco_set_section_contents (boolean (*) PARAMS \ | |
289 | ((bfd *abfd, asection *section, PTR data, file_ptr offset, \ | |
290 | bfd_size_type count))) bfd_generic_set_section_contents | |
291 | #define cisco_get_section_contents bfd_generic_get_section_contents | |
292 | #define cisco_new_section_hook (boolean (*) PARAMS \ | |
293 | ((bfd *, sec_ptr))) bfd_true | |
326e32d7 ILT |
294 | #define cisco_get_symtab_upper_bound bfd_0l |
295 | #define cisco_get_symtab (long (*) PARAMS \ | |
296 | ((bfd *, struct symbol_cache_entry **))) bfd_0l | |
297 | #define cisco_get_reloc_upper_bound (long (*) PARAMS \ | |
298 | ((bfd *, sec_ptr))) bfd_0l | |
299 | #define cisco_canonicalize_reloc (long (*) PARAMS \ | |
300 | ((bfd *, sec_ptr, arelent **, struct symbol_cache_entry**))) bfd_0l | |
f3f29240 JK |
301 | #define cisco_make_empty_symbol (struct symbol_cache_entry * \ |
302 | (*) PARAMS ((bfd *))) bfd_false | |
303 | #define cisco_print_symbol (void (*) PARAMS \ | |
304 | ((bfd *, PTR, struct symbol_cache_entry *, \ | |
305 | bfd_print_symbol_type))) bfd_false | |
306 | #define cisco_get_symbol_info (void (*) PARAMS \ | |
307 | ((bfd *, struct symbol_cache_entry *, \ | |
308 | symbol_info *))) bfd_false | |
309 | #define cisco_get_lineno (alent * (*) PARAMS \ | |
310 | ((bfd *, struct symbol_cache_entry *))) bfd_nullvoidptr | |
311 | #define cisco_set_arch_mach (boolean (*) PARAMS \ | |
312 | ((bfd *, enum bfd_architecture, unsigned long))) bfd_false | |
313 | #define cisco_find_nearest_line (boolean (*) PARAMS \ | |
314 | ((bfd *abfd, struct sec *section, \ | |
315 | struct symbol_cache_entry **symbols,bfd_vma offset, \ | |
316 | CONST char **file, CONST char **func, unsigned int *line))) bfd_false | |
317 | #define cisco_sizeof_headers (int (*) PARAMS \ | |
318 | ((bfd *, boolean))) bfd_0 | |
319 | ||
320 | #define cisco_bfd_debug_info_start bfd_void | |
321 | #define cisco_bfd_debug_info_end bfd_void | |
322 | #define cisco_bfd_debug_info_accumulate (void (*) PARAMS \ | |
323 | ((bfd *, struct sec *))) bfd_void | |
324 | #define cisco_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents | |
325 | #define cisco_bfd_relax_section bfd_generic_relax_section | |
326 | #define cisco_bfd_reloc_type_lookup \ | |
327 | ((CONST struct reloc_howto_struct *(*) PARAMS ((bfd *, bfd_reloc_code_real_type))) bfd_nullvoidptr) | |
328 | #define cisco_bfd_make_debug_symbol \ | |
329 | ((asymbol *(*) PARAMS ((bfd *, void *, unsigned long))) bfd_nullvoidptr) | |
330 | #define cisco_bfd_link_hash_table_create \ | |
331 | ((struct bfd_link_hash_table *(*) PARAMS ((bfd *))) bfd_nullvoidptr) | |
332 | #define cisco_bfd_link_add_symbols \ | |
333 | ((boolean (*) PARAMS ((bfd *, struct bfd_link_info *))) bfd_false) | |
334 | #define cisco_bfd_final_link \ | |
335 | ((boolean (*) PARAMS ((bfd *, struct bfd_link_info *))) bfd_false) | |
336 | #define cisco_bfd_copy_private_section_data \ | |
337 | ((boolean (*) PARAMS ((bfd *, asection *, bfd *, asection *))) bfd_false) | |
338 | #define cisco_bfd_copy_private_bfd_data \ | |
339 | ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_false) | |
340 | #define cisco_bfd_is_local_label \ | |
326e32d7 | 341 | ((boolean (*) PARAMS ((bfd *, asymbol *))) bfd_false) |
f3f29240 | 342 | |
47dc9b52 | 343 | bfd_target cisco_core_vec = |
f3f29240 JK |
344 | { |
345 | "trad-core", | |
346 | bfd_target_unknown_flavour, | |
347 | true, /* target byte order */ | |
348 | true, /* target headers byte order */ | |
349 | (HAS_RELOC | EXEC_P | /* object flags */ | |
350 | HAS_LINENO | HAS_DEBUG | | |
351 | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED), | |
352 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ | |
353 | 0, /* symbol prefix */ | |
354 | ' ', /* ar_pad_char */ | |
355 | 16, /* ar_max_namelen */ | |
356 | 3, /* minimum alignment power */ | |
47dc9b52 JK |
357 | bfd_getb64, bfd_getb_signed_64, bfd_putb64, |
358 | bfd_getb32, bfd_getb_signed_32, bfd_putb32, | |
359 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */ | |
360 | bfd_getb64, bfd_getb_signed_64, bfd_putb64, | |
361 | bfd_getb32, bfd_getb_signed_32, bfd_putb32, | |
362 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */ | |
f3f29240 JK |
363 | |
364 | { /* bfd_check_format */ | |
365 | _bfd_dummy_target, /* unknown format */ | |
366 | _bfd_dummy_target, /* object file */ | |
367 | _bfd_dummy_target, /* archive */ | |
368 | cisco_core_file_p /* a core file */ | |
369 | }, | |
370 | { /* bfd_set_format */ | |
371 | bfd_false, bfd_false, | |
372 | bfd_false, bfd_false | |
373 | }, | |
374 | { /* bfd_write_contents */ | |
375 | bfd_false, bfd_false, | |
376 | bfd_false, bfd_false | |
377 | }, | |
378 | ||
379 | JUMP_TABLE(cisco), | |
380 | (PTR) 0 /* backend_data */ | |
381 | }; |