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eb1e0e80 NC |
1 | /* IBM RS/6000 "XCOFF" back-end for BFD. |
2 | Copyright 2001, 2002 | |
3 | Free Software Foundation, Inc. | |
4 | Written by Tom Rix | |
5 | Contributed by Redhat. | |
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., 59 Temple Place - Suite 330, Boston, | |
22 | MA 02111-1307, USA. */ | |
23 | ||
24 | #include "bfd.h" | |
25 | ||
26 | #ifdef AIX_5_CORE | |
27 | ||
28 | #include "sysdep.h" | |
29 | #include "libbfd.h" | |
30 | ||
b34976b6 AM |
31 | const bfd_target *xcoff64_core_p |
32 | PARAMS ((bfd *)); | |
33 | bfd_boolean xcoff64_core_file_matches_executable_p | |
34 | PARAMS ((bfd *, bfd *)); | |
35 | char *xcoff64_core_file_failing_command | |
36 | PARAMS ((bfd *)); | |
37 | int xcoff64_core_file_failing_signal | |
38 | PARAMS ((bfd *)); | |
eb1e0e80 NC |
39 | |
40 | /* Aix 5.1 system include file. */ | |
41 | ||
42 | /* Need to define this macro so struct ld_info64 get included. */ | |
43 | #define __LDINFO_PTRACE64__ | |
44 | #include <sys/ldr.h> | |
45 | #include <core.h> | |
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 (abfd) | |
54 | bfd *abfd; | |
55 | { | |
56 | struct core_dumpxx core, *new_core_hdr; | |
57 | struct stat statbuf; | |
58 | asection *sec; | |
59 | struct __ld_info64 ldinfo; | |
60 | bfd_vma ld_offset; | |
61 | bfd_size_type i; | |
62 | struct vm_infox vminfo; | |
63 | bfd_target *return_value = NULL; | |
64 | ||
65 | /* Get the header. */ | |
66 | if (bfd_seek (abfd, 0, SEEK_SET) != 0) | |
67 | goto xcoff64_core_p_error; | |
68 | ||
b34976b6 | 69 | if (sizeof (struct core_dumpxx) |
d1e66cd4 | 70 | != bfd_bread (&core, sizeof (struct core_dumpxx), abfd)) |
eb1e0e80 NC |
71 | goto xcoff64_core_p_error; |
72 | ||
b34976b6 | 73 | if (bfd_stat (abfd, &statbuf) < 0) |
eb1e0e80 NC |
74 | goto xcoff64_core_p_error; |
75 | ||
76 | /* Sanity checks | |
77 | c_flag has CORE_VERSION_1, Aix 4+ | |
78 | c_entries = 0 for Aix 4.3+ | |
79 | IS_PROC64 is a macro defined in procinfo.h, test for 64 bit process. | |
80 | ||
81 | We will still be confused if a Aix 4.3 64 bit core file is | |
82 | copied over to a Aix 5 machine. | |
83 | ||
84 | Check file header offsets | |
85 | ||
86 | See rs6000-core.c for comment on size of core | |
87 | If there isn't enough of a real core file, bail. */ | |
88 | ||
b34976b6 AM |
89 | if ((CORE_VERSION_1 != (core.c_flag & CORE_VERSION_1)) |
90 | || (0 != core.c_entries) | |
91 | || (! (IS_PROC64 (&core.c_u.U_proc))) | |
92 | || ((CHECK_FILE_OFFSET (statbuf, core.c_fdsinfox))) | |
93 | || ((CHECK_FILE_OFFSET (statbuf, core.c_loader))) | |
94 | || ((CHECK_FILE_OFFSET (statbuf, core.c_loader + core.c_lsize))) | |
95 | || ((CHECK_FILE_OFFSET (statbuf, core.c_thr))) | |
96 | || ((CHECK_FILE_OFFSET (statbuf, core.c_segregion))) | |
97 | || ((CHECK_FILE_OFFSET (statbuf, core.c_stack))) | |
98 | || ((CHECK_FILE_OFFSET (statbuf, core.c_stack + core.c_size))) | |
99 | || ((CHECK_FILE_OFFSET (statbuf, core.c_data))) | |
100 | || ((CHECK_FILE_OFFSET (statbuf, core.c_data + core.c_datasize))) | |
101 | || (! (core.c_flag & UBLOCK_VALID)) | |
102 | || (! (core.c_flag & LE_VALID))) | |
eb1e0e80 NC |
103 | goto xcoff64_core_p_error; |
104 | ||
5c4491d3 | 105 | /* Check for truncated stack or general truncating. */ |
b34976b6 | 106 | if ((! (core.c_flag & USTACK_VALID)) |
eb1e0e80 NC |
107 | || (core.c_flag & CORE_TRUNC)) |
108 | { | |
109 | bfd_set_error (bfd_error_file_truncated); | |
110 | ||
111 | return return_value; | |
112 | } | |
113 | ||
114 | new_core_hdr = (struct core_dumpxx *) | |
115 | bfd_zalloc (abfd, sizeof (struct core_dumpxx)); | |
b34976b6 | 116 | if (NULL == new_core_hdr) |
eb1e0e80 NC |
117 | return return_value; |
118 | ||
119 | memcpy (new_core_hdr, &core, sizeof (struct core_dumpxx)); | |
120 | core_hdr(abfd) = (char *)new_core_hdr; | |
121 | ||
122 | /* .stack section. */ | |
123 | sec = bfd_make_section_anyway (abfd, ".stack"); | |
b34976b6 | 124 | if (NULL == sec) |
eb1e0e80 NC |
125 | return return_value; |
126 | ||
127 | sec->flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS; | |
128 | sec->_raw_size = core.c_size; | |
129 | sec->vma = core.c_stackorg; | |
130 | sec->filepos = core.c_stack; | |
131 | ||
132 | /* .reg section for all registers. */ | |
133 | sec = bfd_make_section_anyway (abfd, ".reg"); | |
b34976b6 | 134 | if (NULL == sec) |
eb1e0e80 NC |
135 | return return_value; |
136 | ||
137 | sec->flags = SEC_HAS_CONTENTS | SEC_IN_MEMORY; | |
138 | sec->_raw_size = sizeof (struct __context64); | |
139 | sec->vma = 0; | |
140 | sec->filepos = 0; | |
141 | sec->contents = (bfd_byte *)&new_core_hdr->c_flt.r64; | |
142 | ||
143 | /* .ldinfo section. | |
144 | To actually find out how long this section is in this particular | |
b34976b6 | 145 | core dump would require going down the whole list of struct |
eb1e0e80 NC |
146 | ld_info's. See if we can just fake it. */ |
147 | sec = bfd_make_section_anyway (abfd, ".ldinfo"); | |
148 | if (NULL == sec) | |
149 | return return_value; | |
150 | ||
151 | sec->flags = SEC_HAS_CONTENTS; | |
152 | sec->_raw_size = core.c_lsize; | |
153 | sec->vma = 0; | |
154 | sec->filepos = core.c_loader; | |
155 | ||
156 | /* AIX 4 adds data sections from loaded objects to the core file, | |
157 | which can be found by examining ldinfo, and anonymously mmapped | |
158 | regions. */ | |
b34976b6 | 159 | |
eb1e0e80 NC |
160 | /* .data section from executable. */ |
161 | sec = bfd_make_section_anyway (abfd, ".data"); | |
b34976b6 | 162 | if (NULL == sec) |
eb1e0e80 NC |
163 | return return_value; |
164 | ||
165 | sec->flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS; | |
166 | sec->_raw_size = core.c_datasize; | |
167 | sec->vma = core.c_dataorg; | |
168 | sec->filepos = core.c_data; | |
169 | ||
170 | /* .data sections from loaded objects. */ | |
171 | ld_offset = core.c_loader; | |
b34976b6 AM |
172 | |
173 | while (1) | |
eb1e0e80 | 174 | { |
b34976b6 | 175 | if (bfd_seek (abfd, ld_offset, SEEK_SET) != 0) |
eb1e0e80 NC |
176 | return return_value; |
177 | ||
178 | if (sizeof (struct __ld_info64) != | |
b34976b6 | 179 | bfd_bread (&ldinfo, sizeof (struct __ld_info64), abfd)) |
eb1e0e80 NC |
180 | return return_value; |
181 | ||
b34976b6 | 182 | if (ldinfo.ldinfo_core) |
eb1e0e80 NC |
183 | { |
184 | sec = bfd_make_section_anyway (abfd, ".data"); | |
b34976b6 | 185 | if (NULL == sec) |
eb1e0e80 NC |
186 | return return_value; |
187 | ||
188 | sec->flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS; | |
189 | sec->_raw_size = ldinfo.ldinfo_datasize; | |
190 | sec->vma = ldinfo.ldinfo_dataorg; | |
191 | sec->filepos = ldinfo.ldinfo_core; | |
192 | } | |
193 | ||
194 | if (0 == ldinfo.ldinfo_next) | |
195 | break; | |
196 | ld_offset += ldinfo.ldinfo_next; | |
197 | } | |
198 | ||
199 | /* .vmdata sections from anonymously mmapped regions. */ | |
b34976b6 | 200 | if (core.c_vmregions) |
eb1e0e80 | 201 | { |
b34976b6 | 202 | if (bfd_seek (abfd, core.c_vmm, SEEK_SET) != 0) |
eb1e0e80 NC |
203 | return return_value; |
204 | ||
b34976b6 | 205 | for (i = 0; i < core.c_vmregions; i++) |
eb1e0e80 | 206 | if (sizeof (struct vm_infox) != |
b34976b6 | 207 | bfd_bread (&vminfo, sizeof (struct vm_infox), abfd)) |
eb1e0e80 NC |
208 | return return_value; |
209 | ||
b34976b6 | 210 | if (vminfo.vminfo_offset) |
eb1e0e80 NC |
211 | { |
212 | sec = bfd_make_section_anyway (abfd, ".vmdata"); | |
b34976b6 | 213 | if (NULL == sec) |
eb1e0e80 NC |
214 | return return_value; |
215 | ||
216 | sec->flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS; | |
217 | sec->_raw_size = vminfo.vminfo_size; | |
218 | sec->vma = vminfo.vminfo_addr; | |
219 | sec->filepos = vminfo.vminfo_offset; | |
220 | } | |
221 | } | |
222 | ||
223 | return_value = abfd->xvec; /* This is garbage for now. */ | |
b34976b6 | 224 | |
eb1e0e80 | 225 | xcoff64_core_p_error: |
b34976b6 | 226 | if (bfd_get_error () != bfd_error_system_call) |
eb1e0e80 | 227 | bfd_set_error (bfd_error_wrong_format); |
b34976b6 | 228 | |
eb1e0e80 NC |
229 | return return_value; |
230 | } | |
231 | ||
b34976b6 | 232 | /* Return `TRUE' if given core is from the given executable. */ |
eb1e0e80 | 233 | |
b34976b6 | 234 | bfd_boolean |
eb1e0e80 NC |
235 | xcoff64_core_file_matches_executable_p (core_bfd, exec_bfd) |
236 | bfd *core_bfd; | |
237 | bfd *exec_bfd; | |
238 | { | |
239 | struct core_dumpxx core; | |
240 | char *path, *s; | |
241 | size_t alloc; | |
242 | const char *str1, *str2; | |
b34976b6 | 243 | bfd_boolean return_value = FALSE; |
eb1e0e80 NC |
244 | |
245 | /* Get the header. */ | |
b34976b6 | 246 | if (bfd_seek (core_bfd, 0, SEEK_SET) != 0) |
eb1e0e80 | 247 | return return_value; |
b34976b6 | 248 | |
eb1e0e80 | 249 | if (sizeof (struct core_dumpxx) != |
b34976b6 | 250 | bfd_bread (&core, sizeof (struct core_dumpxx), core_bfd)) |
eb1e0e80 NC |
251 | return return_value; |
252 | ||
b34976b6 | 253 | if (bfd_seek (core_bfd, core.c_loader, SEEK_SET) != 0) |
eb1e0e80 NC |
254 | return return_value; |
255 | ||
256 | alloc = 100; | |
257 | path = bfd_malloc (alloc); | |
b34976b6 | 258 | if (path == NULL) |
eb1e0e80 NC |
259 | return return_value; |
260 | ||
261 | s = path; | |
262 | ||
263 | while (1) | |
264 | { | |
d1e66cd4 | 265 | if (bfd_bread (s, 1, core_bfd) != 1) |
eb1e0e80 NC |
266 | goto xcoff64_core_file_matches_executable_p_end_1; |
267 | ||
268 | if (*s == '\0') | |
269 | break; | |
270 | ++s; | |
b34976b6 | 271 | if (s == path + alloc) |
eb1e0e80 NC |
272 | { |
273 | char *n; | |
274 | ||
275 | alloc *= 2; | |
276 | n = bfd_realloc (path, alloc); | |
b34976b6 | 277 | if (n == NULL) |
eb1e0e80 NC |
278 | goto xcoff64_core_file_matches_executable_p_end_1; |
279 | ||
280 | s = n + (path - s); | |
281 | path = n; | |
282 | } | |
283 | } | |
284 | ||
285 | str1 = strrchr (path, '/'); | |
286 | str2 = strrchr (exec_bfd->filename, '/'); | |
287 | ||
288 | /* Step over character '/'. */ | |
289 | str1 = str1 != NULL ? str1 + 1 : path; | |
290 | str2 = str2 != NULL ? str2 + 1 : exec_bfd->filename; | |
291 | ||
b34976b6 AM |
292 | if (strcmp (str1, str2) == 0) |
293 | return_value = TRUE; | |
eb1e0e80 NC |
294 | |
295 | xcoff64_core_file_matches_executable_p_end_1: | |
296 | free (path); | |
297 | return return_value; | |
298 | } | |
299 | ||
300 | char * | |
301 | xcoff64_core_file_failing_command (abfd) | |
302 | bfd *abfd; | |
303 | { | |
304 | struct core_dumpxx *c = core_hdr (abfd); | |
305 | char *return_value = 0; | |
306 | ||
b34976b6 | 307 | if (NULL != c) |
eb1e0e80 NC |
308 | return_value = c->c_u.U_proc.pi_comm; |
309 | ||
310 | return return_value; | |
311 | } | |
312 | ||
313 | int | |
314 | xcoff64_core_file_failing_signal (abfd) | |
315 | bfd *abfd; | |
316 | { | |
317 | struct core_dumpxx *c = core_hdr (abfd); | |
318 | int return_value = 0; | |
319 | ||
b34976b6 | 320 | if (NULL != c) |
eb1e0e80 NC |
321 | return_value = c->c_signo; |
322 | ||
323 | return return_value; | |
324 | } | |
325 | ||
326 | #else /* AIX_5_CORE */ | |
327 | ||
b34976b6 AM |
328 | const bfd_target *xcoff64_core_p |
329 | PARAMS ((bfd *)); | |
330 | bfd_boolean xcoff64_core_file_matches_executable_p | |
331 | PARAMS ((bfd *, bfd *)); | |
332 | char *xcoff64_core_file_failing_command | |
333 | PARAMS ((bfd *)); | |
334 | int xcoff64_core_file_failing_signal | |
335 | PARAMS ((bfd *)); | |
eb1e0e80 NC |
336 | |
337 | const bfd_target * | |
338 | xcoff64_core_p (abfd) | |
2d653fc7 | 339 | bfd *abfd ATTRIBUTE_UNUSED; |
eb1e0e80 NC |
340 | { |
341 | bfd_set_error (bfd_error_wrong_format); | |
342 | return 0; | |
343 | } | |
344 | ||
b34976b6 | 345 | bfd_boolean |
eb1e0e80 | 346 | xcoff64_core_file_matches_executable_p (core_bfd, exec_bfd) |
2d653fc7 AM |
347 | bfd *core_bfd ATTRIBUTE_UNUSED; |
348 | bfd *exec_bfd ATTRIBUTE_UNUSED; | |
eb1e0e80 | 349 | { |
b34976b6 | 350 | return FALSE; |
eb1e0e80 NC |
351 | } |
352 | ||
353 | char * | |
354 | xcoff64_core_file_failing_command (abfd) | |
2d653fc7 | 355 | bfd *abfd ATTRIBUTE_UNUSED; |
eb1e0e80 NC |
356 | { |
357 | return 0; | |
358 | } | |
359 | ||
360 | int | |
361 | xcoff64_core_file_failing_signal (abfd) | |
2d653fc7 | 362 | bfd *abfd ATTRIBUTE_UNUSED; |
eb1e0e80 NC |
363 | { |
364 | return 0; | |
365 | } | |
366 | ||
367 | #endif /* AIX_5_CORE */ |