1 /* BFD back-end for CISCO crash dumps.
3 Copyright 1994 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 2 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
24 /* core_file_failing_signal returns a host signal (this probably should
28 #define CRASH_INFO (0xffc)
29 #define CRASH_MAGIC 0xdead1234
32 CRASH_REASON_NOTCRASHED
= 0,
33 CRASH_REASON_EXCEPTION
= 1,
34 CRASH_REASON_CORRUPT
= 2,
37 struct crashinfo_external
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) */
47 struct cisco_core_struct
53 cisco_core_file_p (abfd
)
57 unsigned int crashinfo_offset
;
58 struct crashinfo_external crashinfo
;
64 if (bfd_seek (abfd
, CRASH_INFO
, SEEK_SET
) != 0)
67 nread
= bfd_read (buf
, 1, 4, abfd
);
70 if (bfd_get_error () != bfd_error_system_call
)
71 bfd_set_error (bfd_error_wrong_format
);
74 crashinfo_offset
= bfd_get_32 (abfd
, buf
);
76 if (bfd_seek (abfd
, crashinfo_offset
, SEEK_SET
) != 0)
79 nread
= bfd_read (&crashinfo
, 1, sizeof (crashinfo
), abfd
);
80 if (nread
!= sizeof (crashinfo
))
82 if (bfd_get_error () != bfd_error_system_call
)
83 bfd_set_error (bfd_error_wrong_format
);
87 if (bfd_stat (abfd
, &statbuf
) < 0)
89 bfd_set_error (bfd_error_system_call
);
93 if (bfd_get_32 (abfd
, crashinfo
.magic
) != CRASH_MAGIC
)
95 bfd_set_error (bfd_error_wrong_format
);
99 switch (bfd_get_32 (abfd
, crashinfo
.version
))
102 bfd_set_error (bfd_error_wrong_format
);
109 rambase
= bfd_get_32 (abfd
, crashinfo
.rambase
);
113 /* OK, we believe you. You're a core file. */
115 abfd
->tdata
.cisco_core_data
=
116 ((struct cisco_core_struct
*)
117 bfd_zmalloc (sizeof (struct cisco_core_struct
)));
118 if (abfd
->tdata
.cisco_core_data
== NULL
)
120 bfd_set_error (bfd_error_no_memory
);
124 switch ((crashreason
) bfd_get_32 (abfd
, crashinfo
.reason
))
126 case CRASH_REASON_NOTCRASHED
:
127 /* Crash file probably came from write core. */
128 abfd
->tdata
.cisco_core_data
->sig
= 0;
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;
135 case CRASH_REASON_EXCEPTION
:
136 /* Crash occured due to CPU exception. */
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
143 switch (bfd_get_32 (abfd
, crashinfo
.cpu_vector
))
146 case 2 : abfd
->tdata
.cisco_core_data
->sig
= SIGBUS
; break;
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;
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;
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;
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;
171 case 31: abfd
->tdata
.cisco_core_data
->sig
= SIGINT
; break;
173 case 33: abfd
->tdata
.cisco_core_data
->sig
= SIGTRAP
; break;
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;
180 case 50: abfd
->tdata
.cisco_core_data
->sig
= SIGFPE
; break;
182 case 51: abfd
->tdata
.cisco_core_data
->sig
= SIGFPE
; break;
184 case 52: abfd
->tdata
.cisco_core_data
->sig
= SIGFPE
; break;
186 case 53: abfd
->tdata
.cisco_core_data
->sig
= SIGFPE
; break;
188 case 54: abfd
->tdata
.cisco_core_data
->sig
= SIGFPE
; break;
190 /* "software generated"*/
191 abfd
->tdata
.cisco_core_data
->sig
= SIGEMT
;
195 /* Unknown crash reason. */
196 abfd
->tdata
.cisco_core_data
->sig
= 0;
200 abfd
->sections
= NULL
;
201 abfd
->section_count
= 0;
203 asect
= (asection
*) bfd_zmalloc (sizeof (asection
));
206 bfd_set_error (bfd_error_no_memory
);
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
213 asect
->_raw_size
= statbuf
.st_size
;
215 asect
->filepos
= bfd_get_32 (abfd
, crashinfo
.registers
) - rambase
;
216 asect
->next
= abfd
->sections
;
217 abfd
->sections
= asect
;
218 ++abfd
->section_count
;
220 /* There is only one section containing data from the target system's RAM.
222 asect
= (asection
*) bfd_zmalloc (sizeof (asection
));
225 bfd_set_error (bfd_error_no_memory
);
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
;
234 asect
->next
= abfd
->sections
;
235 abfd
->sections
= asect
;
236 ++abfd
->section_count
;
243 for (asect
= abfd
->sections
; asect
!= NULL
;)
245 nextsect
= asect
->next
;
249 free (abfd
->tdata
.cisco_core_data
);
255 cisco_core_file_failing_command (abfd
)
262 cisco_core_file_failing_signal (abfd
)
265 return abfd
->tdata
.cisco_core_data
->sig
;
269 cisco_core_file_matches_executable_p (core_bfd
, exec_bfd
)
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
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
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
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
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 \
341 ((boolean (*) PARAMS ((bfd *, asymbol *))) bfd_false)
342 #define cisco_bfd_free_cached_info bfd_true
344 bfd_target cisco_core_vec
=
347 bfd_target_unknown_flavour
,
348 true, /* target byte order */
349 true, /* target headers byte order */
350 (HAS_RELOC
| EXEC_P
| /* object flags */
351 HAS_LINENO
| HAS_DEBUG
|
352 HAS_SYMS
| HAS_LOCALS
| WP_TEXT
| D_PAGED
),
353 (SEC_HAS_CONTENTS
| SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
), /* section flags */
354 0, /* symbol prefix */
355 ' ', /* ar_pad_char */
356 16, /* ar_max_namelen */
357 3, /* minimum alignment power */
358 bfd_getb64
, bfd_getb_signed_64
, bfd_putb64
,
359 bfd_getb32
, bfd_getb_signed_32
, bfd_putb32
,
360 bfd_getb16
, bfd_getb_signed_16
, bfd_putb16
, /* data */
361 bfd_getb64
, bfd_getb_signed_64
, bfd_putb64
,
362 bfd_getb32
, bfd_getb_signed_32
, bfd_putb32
,
363 bfd_getb16
, bfd_getb_signed_16
, bfd_putb16
, /* hdrs */
365 { /* bfd_check_format */
366 _bfd_dummy_target
, /* unknown format */
367 _bfd_dummy_target
, /* object file */
368 _bfd_dummy_target
, /* archive */
369 cisco_core_file_p
/* a core file */
371 { /* bfd_set_format */
372 bfd_false
, bfd_false
,
375 { /* bfd_write_contents */
376 bfd_false
, bfd_false
,
381 (PTR
) 0 /* backend_data */