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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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
52 static const bfd_target *
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)
121 switch ((crashreason) bfd_get_32 (abfd, crashinfo.reason))
123 case CRASH_REASON_NOTCRASHED:
124 /* Crash file probably came from write core. */
125 abfd->tdata.cisco_core_data->sig = 0;
127 case CRASH_REASON_CORRUPT:
128 /* The crash context area was corrupt -- proceed with caution.
129 We have no way of passing this information back to the caller. */
130 abfd->tdata.cisco_core_data->sig = 0;
132 case CRASH_REASON_EXCEPTION:
133 /* Crash occured due to CPU exception. */
135 /* This is 68k-specific; for MIPS we'll need to interpret
136 cpu_vector differently based on the target configuration
137 (since CISCO core files don't seem to have the processor
140 switch (bfd_get_32 (abfd, crashinfo.cpu_vector))
143 case 2 : abfd->tdata.cisco_core_data->sig = SIGBUS; break;
145 case 3 : abfd->tdata.cisco_core_data->sig = SIGBUS; break;
146 /* illegal instruction */
147 case 4 : abfd->tdata.cisco_core_data->sig = SIGILL; break;
149 case 5 : abfd->tdata.cisco_core_data->sig = SIGFPE; break;
150 /* chk instruction */
151 case 6 : abfd->tdata.cisco_core_data->sig = SIGFPE; break;
152 /* trapv instruction */
153 case 7 : abfd->tdata.cisco_core_data->sig = SIGFPE; break;
154 /* privilege violation */
155 case 8 : abfd->tdata.cisco_core_data->sig = SIGSEGV; break;
157 case 9 : abfd->tdata.cisco_core_data->sig = SIGTRAP; break;
158 /* line 1010 emulator */
159 case 10: abfd->tdata.cisco_core_data->sig = SIGILL; break;
160 /* line 1111 emulator */
161 case 11: abfd->tdata.cisco_core_data->sig = SIGILL; break;
163 /* Coprocessor protocol violation. Using a standard MMU or FPU
164 this cannot be triggered by software. Call it a SIGBUS. */
165 case 13: abfd->tdata.cisco_core_data->sig = SIGBUS; break;
168 case 31: abfd->tdata.cisco_core_data->sig = SIGINT; break;
170 case 33: abfd->tdata.cisco_core_data->sig = SIGTRAP; break;
172 /* floating point err */
173 case 48: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
174 /* floating point err */
175 case 49: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
177 case 50: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
179 case 51: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
181 case 52: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
183 case 53: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
185 case 54: abfd->tdata.cisco_core_data->sig = SIGFPE; break;
187 /* "software generated"*/
188 abfd->tdata.cisco_core_data->sig = SIGEMT;
192 /* Unknown crash reason. */
193 abfd->tdata.cisco_core_data->sig = 0;
197 abfd->sections = NULL;
198 abfd->section_count = 0;
200 asect = (asection *) bfd_zmalloc (sizeof (asection));
203 asect->name = ".reg";
204 asect->flags = SEC_HAS_CONTENTS;
205 /* This can be bigger than the real size. Set it to the size of the whole
207 asect->_raw_size = statbuf.st_size;
209 asect->filepos = bfd_get_32 (abfd, crashinfo.registers) - rambase;
210 asect->next = abfd->sections;
211 abfd->sections = asect;
212 ++abfd->section_count;
214 /* There is only one section containing data from the target system's RAM.
216 asect = (asection *) bfd_zmalloc (sizeof (asection));
219 asect->name = ".data";
220 asect->flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS;
221 /* The size of memory is the size of the core file itself. */
222 asect->_raw_size = statbuf.st_size;
223 asect->vma = rambase;
225 asect->next = abfd->sections;
226 abfd->sections = asect;
227 ++abfd->section_count;
234 for (asect = abfd->sections; asect != NULL;)
236 nextsect = asect->next;
240 free (abfd->tdata.cisco_core_data);
246 cisco_core_file_failing_command (abfd)
253 cisco_core_file_failing_signal (abfd)
256 return abfd->tdata.cisco_core_data->sig;
260 cisco_core_file_matches_executable_p (core_bfd, exec_bfd)
267 const bfd_target cisco_core_vec =
270 bfd_target_unknown_flavour,
271 true, /* target byte order */
272 true, /* target headers byte order */
273 (HAS_RELOC | EXEC_P | /* object flags */
274 HAS_LINENO | HAS_DEBUG |
275 HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
276 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
277 0, /* symbol prefix */
278 ' ', /* ar_pad_char */
279 16, /* ar_max_namelen */
280 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
281 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
282 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
283 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
284 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
285 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
287 { /* bfd_check_format */
288 _bfd_dummy_target, /* unknown format */
289 _bfd_dummy_target, /* object file */
290 _bfd_dummy_target, /* archive */
291 cisco_core_file_p /* a core file */
293 { /* bfd_set_format */
294 bfd_false, bfd_false,
297 { /* bfd_write_contents */
298 bfd_false, bfd_false,
302 BFD_JUMP_TABLE_GENERIC (_bfd_generic),
303 BFD_JUMP_TABLE_COPY (_bfd_generic),
304 BFD_JUMP_TABLE_CORE (cisco),
305 BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
306 BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
307 BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
308 BFD_JUMP_TABLE_WRITE (_bfd_generic),
309 BFD_JUMP_TABLE_LINK (_bfd_nolink),
310 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
312 (PTR) 0 /* backend_data */