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[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [bfd/] [aix5ppc-core.c] - Blame information for rev 165

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/* IBM RS/6000 "XCOFF" back-end for BFD.
2
   Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
3
   Free Software Foundation, Inc.
4
   Written by Tom Rix
5
   Contributed by Red Hat Inc.
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 3 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,
22
   MA 02110-1301, USA.  */
23
 
24
#include "sysdep.h"
25
#include "bfd.h"
26
 
27
const bfd_target *xcoff64_core_p (bfd *);
28
bfd_boolean xcoff64_core_file_matches_executable_p (bfd *, bfd *);
29
char *xcoff64_core_file_failing_command (bfd *);
30
int xcoff64_core_file_failing_signal (bfd *);
31
 
32
#ifdef AIX_5_CORE
33
 
34
#include "libbfd.h"
35
 
36
/* Aix 5.1 system include file.  */
37
 
38
/* Need to define this macro so struct ld_info64 get included.  */
39
#define __LDINFO_PTRACE64__
40
#include <sys/ldr.h>
41
#include <core.h>
42
 
43
/* The default architecture and machine for matching core files.  */
44
#define DEFAULT_ARCHITECTURE    bfd_arch_powerpc
45
#define DEFAULT_MACHINE         bfd_mach_ppc_620
46
 
47
#define core_hdr(abfd)          ((struct core_dumpxx *) abfd->tdata.any)
48
 
49
#define CHECK_FILE_OFFSET(s, v) \
50
  ((bfd_signed_vma)(v) < 0 || (bfd_signed_vma)(v) > (bfd_signed_vma)(s).st_size)
51
 
52
const bfd_target *
53
xcoff64_core_p (bfd *abfd)
54
{
55
  enum bfd_architecture arch;
56
  unsigned long mach;
57
  struct core_dumpxx core, *new_core_hdr;
58
  struct stat statbuf;
59
  asection *sec;
60
  struct __ld_info64 ldinfo;
61
  bfd_vma ld_offset;
62
  bfd_size_type i;
63
  struct vm_infox vminfo;
64
  const bfd_target *return_value = NULL;
65
  flagword flags;
66
 
67
  /* Get the header.  */
68
  if (bfd_seek (abfd, 0, SEEK_SET) != 0)
69
    goto xcoff64_core_p_error;
70
 
71
  if (sizeof (struct core_dumpxx)
72
      != bfd_bread (&core, sizeof (struct core_dumpxx), abfd))
73
    goto xcoff64_core_p_error;
74
 
75
  if (bfd_stat (abfd, &statbuf) < 0)
76
    goto xcoff64_core_p_error;
77
 
78
  /* Sanity checks
79
     c_flag has CORE_VERSION_1, Aix 4+
80
     c_entries = 0 for Aix 4.3+
81
     IS_PROC64 is a macro defined in procinfo.h, test for 64 bit process.
82
 
83
     We will still be confused if a Aix 4.3 64 bit core file is
84
     copied over to a Aix 5 machine.
85
 
86
     Check file header offsets
87
 
88
     See rs6000-core.c for comment on size of core
89
     If there isn't enough of a real core file, bail.  */
90
 
91
  if ((CORE_VERSION_1 != (core.c_flag & CORE_VERSION_1))
92
      || (0 != core.c_entries)
93
      || (! (IS_PROC64 (&core.c_u.U_proc)))
94
      || ((CHECK_FILE_OFFSET (statbuf, core.c_fdsinfox)))
95
      || ((CHECK_FILE_OFFSET (statbuf, core.c_loader)))
96
      || ((CHECK_FILE_OFFSET (statbuf, core.c_loader + core.c_lsize)))
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      || ((CHECK_FILE_OFFSET (statbuf, core.c_thr)))
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      || ((CHECK_FILE_OFFSET (statbuf, core.c_segregion)))
99
      || ((CHECK_FILE_OFFSET (statbuf, core.c_stack)))
100
      || ((CHECK_FILE_OFFSET (statbuf, core.c_stack + core.c_size)))
101
      || ((CHECK_FILE_OFFSET (statbuf, core.c_data)))
102
      || ((CHECK_FILE_OFFSET (statbuf, core.c_data + core.c_datasize)))
103
      || (! (core.c_flag & UBLOCK_VALID))
104
      || (! (core.c_flag & LE_VALID)))
105
    goto xcoff64_core_p_error;
106
 
107
  /* Check for truncated stack or general truncating.  */
108
  if ((! (core.c_flag & USTACK_VALID))
109
      || (core.c_flag & CORE_TRUNC))
110
    {
111
      bfd_set_error (bfd_error_file_truncated);
112
 
113
      return return_value;
114
    }
115
 
116
  new_core_hdr = bfd_zalloc (abfd, sizeof (struct core_dumpxx));
117
  if (NULL == new_core_hdr)
118
    return return_value;
119
 
120
  memcpy (new_core_hdr, &core, sizeof (struct core_dumpxx));
121
  /* The core_hdr() macro is no longer used here because it would
122
     expand to code relying on gcc's cast-as-lvalue extension,
123
     which was removed in gcc 4.0.  */
124
  abfd->tdata.any = new_core_hdr;
125
 
126
  /* .stack section.  */
127
  flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS;
128
  sec = bfd_make_section_anyway_with_flags (abfd, ".stack", flags);
129
  if (NULL == sec)
130
    return return_value;
131
 
132
  sec->size = core.c_size;
133
  sec->vma = core.c_stackorg;
134
  sec->filepos = core.c_stack;
135
 
136
  /* .reg section for all registers.  */
137
  flags = SEC_HAS_CONTENTS | SEC_IN_MEMORY;
138
  sec = bfd_make_section_anyway_with_flags (abfd, ".reg", flags);
139
  if (NULL == sec)
140
    return return_value;
141
 
142
  sec->size = sizeof (struct __context64);
143
  sec->vma = 0;
144
  sec->filepos = 0;
145
  sec->contents = (bfd_byte *)&new_core_hdr->c_flt.r64;
146
 
147
  /* .ldinfo section.
148
     To actually find out how long this section is in this particular
149
     core dump would require going down the whole list of struct
150
     ld_info's.   See if we can just fake it.  */
151
  flags = SEC_HAS_CONTENTS;
152
  sec = bfd_make_section_anyway_with_flags (abfd, ".ldinfo", flags);
153
  if (NULL == sec)
154
    return return_value;
155
 
156
  sec->size = core.c_lsize;
157
  sec->vma = 0;
158
  sec->filepos = core.c_loader;
159
 
160
  /* AIX 4 adds data sections from loaded objects to the core file,
161
     which can be found by examining ldinfo, and anonymously mmapped
162
     regions.  */
163
 
164
  /* .data section from executable.  */
165
  flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS;
166
  sec = bfd_make_section_anyway_with_flags (abfd, ".data", flags);
167
  if (NULL == sec)
168
    return return_value;
169
 
170
  sec->size = core.c_datasize;
171
  sec->vma = core.c_dataorg;
172
  sec->filepos = core.c_data;
173
 
174
  /* .data sections from loaded objects.  */
175
  ld_offset = core.c_loader;
176
 
177
  while (1)
178
    {
179
      if (bfd_seek (abfd, ld_offset, SEEK_SET) != 0)
180
        return return_value;
181
 
182
      if (sizeof (struct __ld_info64) !=
183
          bfd_bread (&ldinfo, sizeof (struct __ld_info64), abfd))
184
        return return_value;
185
 
186
      if (ldinfo.ldinfo_core)
187
        {
188
          flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS;
189
          sec = bfd_make_section_anyway_with_flags (abfd, ".data", flags);
190
          if (NULL == sec)
191
            return return_value;
192
 
193
          sec->size = ldinfo.ldinfo_datasize;
194
          sec->vma = ldinfo.ldinfo_dataorg;
195
          sec->filepos = ldinfo.ldinfo_core;
196
        }
197
 
198
      if (0 == ldinfo.ldinfo_next)
199
        break;
200
      ld_offset += ldinfo.ldinfo_next;
201
    }
202
 
203
  /* .vmdata sections from anonymously mmapped regions.  */
204
  if (core.c_vmregions)
205
    {
206
      if (bfd_seek (abfd, core.c_vmm, SEEK_SET) != 0)
207
        return return_value;
208
 
209
      for (i = 0; i < core.c_vmregions; i++)
210
        if (sizeof (struct vm_infox) !=
211
            bfd_bread (&vminfo, sizeof (struct vm_infox), abfd))
212
          return return_value;
213
 
214
      if (vminfo.vminfo_offset)
215
        {
216
          flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS;
217
          sec = bfd_make_section_anyway_with_flags (abfd, ".vmdata", flags);
218
          if (NULL == sec)
219
            return return_value;
220
 
221
          sec->size = vminfo.vminfo_size;
222
          sec->vma = vminfo.vminfo_addr;
223
          sec->filepos = vminfo.vminfo_offset;
224
        }
225
    }
226
 
227
  /* Set the architecture and machine.  */
228
  arch = DEFAULT_ARCHITECTURE;
229
  mach = DEFAULT_MACHINE;
230
  bfd_default_set_arch_mach (abfd, arch, mach);
231
 
232
  return_value = (bfd_target *) abfd->xvec;     /* This is garbage for now.  */
233
 
234
 xcoff64_core_p_error:
235
  if (bfd_get_error () != bfd_error_system_call)
236
    bfd_set_error (bfd_error_wrong_format);
237
 
238
  return return_value;
239
}
240
 
241
/* Return `TRUE' if given core is from the given executable.  */
242
 
243
bfd_boolean
244
xcoff64_core_file_matches_executable_p (bfd *core_bfd, bfd *exec_bfd)
245
{
246
  struct core_dumpxx core;
247
  char *path, *s;
248
  size_t alloc;
249
  const char *str1, *str2;
250
  bfd_boolean return_value = FALSE;
251
 
252
  /* Get the header.  */
253
  if (bfd_seek (core_bfd, 0, SEEK_SET) != 0)
254
    return return_value;
255
 
256
  if (sizeof (struct core_dumpxx) !=
257
      bfd_bread (&core, sizeof (struct core_dumpxx), core_bfd))
258
    return return_value;
259
 
260
  if (bfd_seek (core_bfd, core.c_loader, SEEK_SET) != 0)
261
    return return_value;
262
 
263
  alloc = 100;
264
  path = bfd_malloc (alloc);
265
  if (path == NULL)
266
    return return_value;
267
 
268
  s = path;
269
 
270
  while (1)
271
    {
272
      if (bfd_bread (s, 1, core_bfd) != 1)
273
        goto xcoff64_core_file_matches_executable_p_end_1;
274
 
275
      if (*s == '\0')
276
        break;
277
      ++s;
278
      if (s == path + alloc)
279
        {
280
          char *n;
281
 
282
          alloc *= 2;
283
          n = bfd_realloc (path, alloc);
284
          if (n == NULL)
285
            goto xcoff64_core_file_matches_executable_p_end_1;
286
 
287
          s = n + (path - s);
288
          path = n;
289
        }
290
    }
291
 
292
  str1 = strrchr (path, '/');
293
  str2 = strrchr (exec_bfd->filename, '/');
294
 
295
  /* Step over character '/'.  */
296
  str1 = str1 != NULL ? str1 + 1 : path;
297
  str2 = str2 != NULL ? str2 + 1 : exec_bfd->filename;
298
 
299
  if (strcmp (str1, str2) == 0)
300
    return_value = TRUE;
301
 
302
 xcoff64_core_file_matches_executable_p_end_1:
303
  free (path);
304
  return return_value;
305
}
306
 
307
char *
308
xcoff64_core_file_failing_command (bfd *abfd)
309
{
310
  struct core_dumpxx *c = core_hdr (abfd);
311
  char *return_value = 0;
312
 
313
  if (NULL != c)
314
    return_value = c->c_u.U_proc.pi_comm;
315
 
316
  return return_value;
317
}
318
 
319
int
320
xcoff64_core_file_failing_signal (bfd *abfd)
321
{
322
  struct core_dumpxx *c = core_hdr (abfd);
323
  int return_value = 0;
324
 
325
  if (NULL != c)
326
    return_value = c->c_signo;
327
 
328
  return return_value;
329
}
330
 
331
#else /* AIX_5_CORE */
332
 
333
const bfd_target *
334
xcoff64_core_p (bfd *abfd ATTRIBUTE_UNUSED)
335
{
336
  bfd_set_error (bfd_error_wrong_format);
337
  return 0;
338
}
339
 
340
bfd_boolean
341
xcoff64_core_file_matches_executable_p (bfd *core_bfd, bfd *exec_bfd)
342
{
343
  return generic_core_file_matches_executable_p (core_bfd, exec_bfd);
344
}
345
 
346
char *
347
xcoff64_core_file_failing_command (bfd *abfd ATTRIBUTE_UNUSED)
348
{
349
  return 0;
350
}
351
 
352
int
353
xcoff64_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED)
354
{
355
  return 0;
356
}
357
 
358
#endif /* AIX_5_CORE */

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