Commit | Line | Data |
---|---|---|
eb1e0e80 | 1 | /* IBM RS/6000 "XCOFF" back-end for BFD. |
9553c638 | 2 | Copyright 2001, 2002, 2003, 2004 |
eb1e0e80 NC |
3 | Free Software Foundation, Inc. |
4 | Written by Tom Rix | |
e729279b | 5 | Contributed by Red Hat Inc. |
eb1e0e80 NC |
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 | |
3e110533 | 21 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
53e09e0a | 22 | MA 02110-1301, USA. */ |
eb1e0e80 NC |
23 | |
24 | #include "bfd.h" | |
25 | ||
26 | #ifdef AIX_5_CORE | |
27 | ||
28 | #include "sysdep.h" | |
29 | #include "libbfd.h" | |
30 | ||
e729279b NC |
31 | const bfd_target *xcoff64_core_p (bfd *); |
32 | bfd_boolean xcoff64_core_file_matches_executable_p (bfd *, bfd *); | |
33 | char *xcoff64_core_file_failing_command (bfd *); | |
34 | int xcoff64_core_file_failing_signal (bfd *); | |
eb1e0e80 NC |
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 | #define core_hdr(abfd) ((struct core_dumpxx *) abfd->tdata.any) | |
44 | ||
45 | #define CHECK_FILE_OFFSET(s, v) \ | |
46 | ((bfd_signed_vma)(v) < 0 || (bfd_signed_vma)(v) > (bfd_signed_vma)(s).st_size) | |
47 | ||
48 | const bfd_target * | |
e729279b | 49 | xcoff64_core_p (bfd *abfd) |
eb1e0e80 NC |
50 | { |
51 | struct core_dumpxx core, *new_core_hdr; | |
52 | struct stat statbuf; | |
53 | asection *sec; | |
54 | struct __ld_info64 ldinfo; | |
55 | bfd_vma ld_offset; | |
56 | bfd_size_type i; | |
57 | struct vm_infox vminfo; | |
58 | bfd_target *return_value = NULL; | |
59 | ||
60 | /* Get the header. */ | |
61 | if (bfd_seek (abfd, 0, SEEK_SET) != 0) | |
62 | goto xcoff64_core_p_error; | |
63 | ||
b34976b6 | 64 | if (sizeof (struct core_dumpxx) |
d1e66cd4 | 65 | != bfd_bread (&core, sizeof (struct core_dumpxx), abfd)) |
eb1e0e80 NC |
66 | goto xcoff64_core_p_error; |
67 | ||
b34976b6 | 68 | if (bfd_stat (abfd, &statbuf) < 0) |
eb1e0e80 NC |
69 | goto xcoff64_core_p_error; |
70 | ||
71 | /* Sanity checks | |
72 | c_flag has CORE_VERSION_1, Aix 4+ | |
73 | c_entries = 0 for Aix 4.3+ | |
74 | IS_PROC64 is a macro defined in procinfo.h, test for 64 bit process. | |
75 | ||
76 | We will still be confused if a Aix 4.3 64 bit core file is | |
77 | copied over to a Aix 5 machine. | |
78 | ||
79 | Check file header offsets | |
80 | ||
81 | See rs6000-core.c for comment on size of core | |
82 | If there isn't enough of a real core file, bail. */ | |
83 | ||
b34976b6 AM |
84 | if ((CORE_VERSION_1 != (core.c_flag & CORE_VERSION_1)) |
85 | || (0 != core.c_entries) | |
86 | || (! (IS_PROC64 (&core.c_u.U_proc))) | |
87 | || ((CHECK_FILE_OFFSET (statbuf, core.c_fdsinfox))) | |
88 | || ((CHECK_FILE_OFFSET (statbuf, core.c_loader))) | |
89 | || ((CHECK_FILE_OFFSET (statbuf, core.c_loader + core.c_lsize))) | |
90 | || ((CHECK_FILE_OFFSET (statbuf, core.c_thr))) | |
91 | || ((CHECK_FILE_OFFSET (statbuf, core.c_segregion))) | |
92 | || ((CHECK_FILE_OFFSET (statbuf, core.c_stack))) | |
93 | || ((CHECK_FILE_OFFSET (statbuf, core.c_stack + core.c_size))) | |
94 | || ((CHECK_FILE_OFFSET (statbuf, core.c_data))) | |
95 | || ((CHECK_FILE_OFFSET (statbuf, core.c_data + core.c_datasize))) | |
96 | || (! (core.c_flag & UBLOCK_VALID)) | |
97 | || (! (core.c_flag & LE_VALID))) | |
eb1e0e80 NC |
98 | goto xcoff64_core_p_error; |
99 | ||
5c4491d3 | 100 | /* Check for truncated stack or general truncating. */ |
b34976b6 | 101 | if ((! (core.c_flag & USTACK_VALID)) |
eb1e0e80 NC |
102 | || (core.c_flag & CORE_TRUNC)) |
103 | { | |
104 | bfd_set_error (bfd_error_file_truncated); | |
105 | ||
106 | return return_value; | |
107 | } | |
108 | ||
e729279b | 109 | new_core_hdr = bfd_zalloc (abfd, sizeof (struct core_dumpxx)); |
b34976b6 | 110 | if (NULL == new_core_hdr) |
eb1e0e80 NC |
111 | return return_value; |
112 | ||
113 | memcpy (new_core_hdr, &core, sizeof (struct core_dumpxx)); | |
114 | core_hdr(abfd) = (char *)new_core_hdr; | |
115 | ||
116 | /* .stack section. */ | |
117 | sec = bfd_make_section_anyway (abfd, ".stack"); | |
b34976b6 | 118 | if (NULL == sec) |
eb1e0e80 NC |
119 | return return_value; |
120 | ||
121 | sec->flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS; | |
eea6121a | 122 | sec->size = core.c_size; |
eb1e0e80 NC |
123 | sec->vma = core.c_stackorg; |
124 | sec->filepos = core.c_stack; | |
125 | ||
126 | /* .reg section for all registers. */ | |
127 | sec = bfd_make_section_anyway (abfd, ".reg"); | |
b34976b6 | 128 | if (NULL == sec) |
eb1e0e80 NC |
129 | return return_value; |
130 | ||
131 | sec->flags = SEC_HAS_CONTENTS | SEC_IN_MEMORY; | |
eea6121a | 132 | sec->size = sizeof (struct __context64); |
eb1e0e80 NC |
133 | sec->vma = 0; |
134 | sec->filepos = 0; | |
135 | sec->contents = (bfd_byte *)&new_core_hdr->c_flt.r64; | |
136 | ||
137 | /* .ldinfo section. | |
138 | To actually find out how long this section is in this particular | |
b34976b6 | 139 | core dump would require going down the whole list of struct |
eb1e0e80 NC |
140 | ld_info's. See if we can just fake it. */ |
141 | sec = bfd_make_section_anyway (abfd, ".ldinfo"); | |
142 | if (NULL == sec) | |
143 | return return_value; | |
144 | ||
145 | sec->flags = SEC_HAS_CONTENTS; | |
eea6121a | 146 | sec->size = core.c_lsize; |
eb1e0e80 NC |
147 | sec->vma = 0; |
148 | sec->filepos = core.c_loader; | |
149 | ||
150 | /* AIX 4 adds data sections from loaded objects to the core file, | |
151 | which can be found by examining ldinfo, and anonymously mmapped | |
152 | regions. */ | |
b34976b6 | 153 | |
eb1e0e80 NC |
154 | /* .data section from executable. */ |
155 | sec = bfd_make_section_anyway (abfd, ".data"); | |
b34976b6 | 156 | if (NULL == sec) |
eb1e0e80 NC |
157 | return return_value; |
158 | ||
159 | sec->flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS; | |
eea6121a | 160 | sec->size = core.c_datasize; |
eb1e0e80 NC |
161 | sec->vma = core.c_dataorg; |
162 | sec->filepos = core.c_data; | |
163 | ||
164 | /* .data sections from loaded objects. */ | |
165 | ld_offset = core.c_loader; | |
b34976b6 AM |
166 | |
167 | while (1) | |
eb1e0e80 | 168 | { |
b34976b6 | 169 | if (bfd_seek (abfd, ld_offset, SEEK_SET) != 0) |
eb1e0e80 NC |
170 | return return_value; |
171 | ||
172 | if (sizeof (struct __ld_info64) != | |
b34976b6 | 173 | bfd_bread (&ldinfo, sizeof (struct __ld_info64), abfd)) |
eb1e0e80 NC |
174 | return return_value; |
175 | ||
b34976b6 | 176 | if (ldinfo.ldinfo_core) |
eb1e0e80 NC |
177 | { |
178 | sec = bfd_make_section_anyway (abfd, ".data"); | |
b34976b6 | 179 | if (NULL == sec) |
eb1e0e80 NC |
180 | return return_value; |
181 | ||
182 | sec->flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS; | |
eea6121a | 183 | sec->size = ldinfo.ldinfo_datasize; |
eb1e0e80 NC |
184 | sec->vma = ldinfo.ldinfo_dataorg; |
185 | sec->filepos = ldinfo.ldinfo_core; | |
186 | } | |
187 | ||
188 | if (0 == ldinfo.ldinfo_next) | |
189 | break; | |
190 | ld_offset += ldinfo.ldinfo_next; | |
191 | } | |
192 | ||
193 | /* .vmdata sections from anonymously mmapped regions. */ | |
b34976b6 | 194 | if (core.c_vmregions) |
eb1e0e80 | 195 | { |
b34976b6 | 196 | if (bfd_seek (abfd, core.c_vmm, SEEK_SET) != 0) |
eb1e0e80 NC |
197 | return return_value; |
198 | ||
b34976b6 | 199 | for (i = 0; i < core.c_vmregions; i++) |
eb1e0e80 | 200 | if (sizeof (struct vm_infox) != |
b34976b6 | 201 | bfd_bread (&vminfo, sizeof (struct vm_infox), abfd)) |
eb1e0e80 NC |
202 | return return_value; |
203 | ||
b34976b6 | 204 | if (vminfo.vminfo_offset) |
eb1e0e80 NC |
205 | { |
206 | sec = bfd_make_section_anyway (abfd, ".vmdata"); | |
b34976b6 | 207 | if (NULL == sec) |
eb1e0e80 NC |
208 | return return_value; |
209 | ||
210 | sec->flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS; | |
eea6121a | 211 | sec->size = vminfo.vminfo_size; |
eb1e0e80 NC |
212 | sec->vma = vminfo.vminfo_addr; |
213 | sec->filepos = vminfo.vminfo_offset; | |
214 | } | |
215 | } | |
216 | ||
7cefacd3 | 217 | return_value = (bfd_target *) abfd->xvec; /* This is garbage for now. */ |
b34976b6 | 218 | |
eb1e0e80 | 219 | xcoff64_core_p_error: |
b34976b6 | 220 | if (bfd_get_error () != bfd_error_system_call) |
eb1e0e80 | 221 | bfd_set_error (bfd_error_wrong_format); |
b34976b6 | 222 | |
eb1e0e80 NC |
223 | return return_value; |
224 | } | |
225 | ||
b34976b6 | 226 | /* Return `TRUE' if given core is from the given executable. */ |
eb1e0e80 | 227 | |
b34976b6 | 228 | bfd_boolean |
e729279b | 229 | xcoff64_core_file_matches_executable_p (bfd *core_bfd, bfd *exec_bfd) |
eb1e0e80 NC |
230 | { |
231 | struct core_dumpxx core; | |
232 | char *path, *s; | |
233 | size_t alloc; | |
234 | const char *str1, *str2; | |
b34976b6 | 235 | bfd_boolean return_value = FALSE; |
eb1e0e80 NC |
236 | |
237 | /* Get the header. */ | |
b34976b6 | 238 | if (bfd_seek (core_bfd, 0, SEEK_SET) != 0) |
eb1e0e80 | 239 | return return_value; |
b34976b6 | 240 | |
eb1e0e80 | 241 | if (sizeof (struct core_dumpxx) != |
b34976b6 | 242 | bfd_bread (&core, sizeof (struct core_dumpxx), core_bfd)) |
eb1e0e80 NC |
243 | return return_value; |
244 | ||
b34976b6 | 245 | if (bfd_seek (core_bfd, core.c_loader, SEEK_SET) != 0) |
eb1e0e80 NC |
246 | return return_value; |
247 | ||
248 | alloc = 100; | |
249 | path = bfd_malloc (alloc); | |
b34976b6 | 250 | if (path == NULL) |
eb1e0e80 NC |
251 | return return_value; |
252 | ||
253 | s = path; | |
254 | ||
255 | while (1) | |
256 | { | |
d1e66cd4 | 257 | if (bfd_bread (s, 1, core_bfd) != 1) |
eb1e0e80 NC |
258 | goto xcoff64_core_file_matches_executable_p_end_1; |
259 | ||
260 | if (*s == '\0') | |
261 | break; | |
262 | ++s; | |
b34976b6 | 263 | if (s == path + alloc) |
eb1e0e80 NC |
264 | { |
265 | char *n; | |
266 | ||
267 | alloc *= 2; | |
268 | n = bfd_realloc (path, alloc); | |
b34976b6 | 269 | if (n == NULL) |
eb1e0e80 NC |
270 | goto xcoff64_core_file_matches_executable_p_end_1; |
271 | ||
272 | s = n + (path - s); | |
273 | path = n; | |
274 | } | |
275 | } | |
276 | ||
277 | str1 = strrchr (path, '/'); | |
278 | str2 = strrchr (exec_bfd->filename, '/'); | |
279 | ||
280 | /* Step over character '/'. */ | |
281 | str1 = str1 != NULL ? str1 + 1 : path; | |
282 | str2 = str2 != NULL ? str2 + 1 : exec_bfd->filename; | |
283 | ||
b34976b6 AM |
284 | if (strcmp (str1, str2) == 0) |
285 | return_value = TRUE; | |
eb1e0e80 NC |
286 | |
287 | xcoff64_core_file_matches_executable_p_end_1: | |
288 | free (path); | |
289 | return return_value; | |
290 | } | |
291 | ||
292 | char * | |
e729279b | 293 | xcoff64_core_file_failing_command (bfd *abfd) |
eb1e0e80 NC |
294 | { |
295 | struct core_dumpxx *c = core_hdr (abfd); | |
296 | char *return_value = 0; | |
297 | ||
b34976b6 | 298 | if (NULL != c) |
eb1e0e80 NC |
299 | return_value = c->c_u.U_proc.pi_comm; |
300 | ||
301 | return return_value; | |
302 | } | |
303 | ||
304 | int | |
e729279b | 305 | xcoff64_core_file_failing_signal (bfd *abfd) |
eb1e0e80 NC |
306 | { |
307 | struct core_dumpxx *c = core_hdr (abfd); | |
308 | int return_value = 0; | |
309 | ||
b34976b6 | 310 | if (NULL != c) |
eb1e0e80 NC |
311 | return_value = c->c_signo; |
312 | ||
313 | return return_value; | |
314 | } | |
315 | ||
316 | #else /* AIX_5_CORE */ | |
317 | ||
e729279b NC |
318 | const bfd_target *xcoff64_core_p (bfd *); |
319 | bfd_boolean xcoff64_core_file_matches_executable_p (bfd *, bfd *); | |
320 | char *xcoff64_core_file_failing_command (bfd *); | |
321 | int xcoff64_core_file_failing_signal (bfd *); | |
eb1e0e80 NC |
322 | |
323 | const bfd_target * | |
e729279b | 324 | xcoff64_core_p (bfd *abfd ATTRIBUTE_UNUSED) |
eb1e0e80 NC |
325 | { |
326 | bfd_set_error (bfd_error_wrong_format); | |
327 | return 0; | |
328 | } | |
329 | ||
b34976b6 | 330 | bfd_boolean |
e729279b NC |
331 | xcoff64_core_file_matches_executable_p (bfd *core_bfd ATTRIBUTE_UNUSED, |
332 | bfd *exec_bfd ATTRIBUTE_UNUSED) | |
eb1e0e80 | 333 | { |
b34976b6 | 334 | return FALSE; |
eb1e0e80 NC |
335 | } |
336 | ||
337 | char * | |
e729279b | 338 | xcoff64_core_file_failing_command (bfd *abfd ATTRIBUTE_UNUSED) |
eb1e0e80 NC |
339 | { |
340 | return 0; | |
341 | } | |
342 | ||
343 | int | |
e729279b | 344 | xcoff64_core_file_failing_signal (bfd *abfd ATTRIBUTE_UNUSED) |
eb1e0e80 NC |
345 | { |
346 | return 0; | |
347 | } | |
348 | ||
349 | #endif /* AIX_5_CORE */ |