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4aa995e1 PA |
1 | /* Target-dependent code for GNU/Linux, architecture independent. |
2 | ||
28e7fd62 | 3 | Copyright (C) 2009-2013 Free Software Foundation, Inc. |
4aa995e1 PA |
4 | |
5 | This file is part of GDB. | |
6 | ||
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 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
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. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "defs.h" | |
21 | #include "gdbtypes.h" | |
2c0b251b | 22 | #include "linux-tdep.h" |
6c95b8df PA |
23 | #include "auxv.h" |
24 | #include "target.h" | |
6432734d UW |
25 | #include "gdbthread.h" |
26 | #include "gdbcore.h" | |
27 | #include "regcache.h" | |
28 | #include "regset.h" | |
6c95b8df | 29 | #include "elf/common.h" |
6432734d | 30 | #include "elf-bfd.h" /* for elfcore_write_* */ |
a5ee0f0c | 31 | #include "inferior.h" |
3030c96e | 32 | #include "cli/cli-utils.h" |
451b7c33 TT |
33 | #include "arch-utils.h" |
34 | #include "gdb_obstack.h" | |
b3ac9c77 | 35 | #include "cli/cli-utils.h" |
3030c96e UW |
36 | |
37 | #include <ctype.h> | |
4aa995e1 | 38 | |
06253dd3 JK |
39 | static struct gdbarch_data *linux_gdbarch_data_handle; |
40 | ||
41 | struct linux_gdbarch_data | |
42 | { | |
43 | struct type *siginfo_type; | |
44 | }; | |
45 | ||
46 | static void * | |
47 | init_linux_gdbarch_data (struct gdbarch *gdbarch) | |
48 | { | |
49 | return GDBARCH_OBSTACK_ZALLOC (gdbarch, struct linux_gdbarch_data); | |
50 | } | |
51 | ||
52 | static struct linux_gdbarch_data * | |
53 | get_linux_gdbarch_data (struct gdbarch *gdbarch) | |
54 | { | |
55 | return gdbarch_data (gdbarch, linux_gdbarch_data_handle); | |
56 | } | |
57 | ||
4aa995e1 PA |
58 | /* This function is suitable for architectures that don't |
59 | extend/override the standard siginfo structure. */ | |
60 | ||
61 | struct type * | |
62 | linux_get_siginfo_type (struct gdbarch *gdbarch) | |
63 | { | |
06253dd3 | 64 | struct linux_gdbarch_data *linux_gdbarch_data; |
4aa995e1 PA |
65 | struct type *int_type, *uint_type, *long_type, *void_ptr_type; |
66 | struct type *uid_type, *pid_type; | |
67 | struct type *sigval_type, *clock_type; | |
68 | struct type *siginfo_type, *sifields_type; | |
69 | struct type *type; | |
70 | ||
06253dd3 JK |
71 | linux_gdbarch_data = get_linux_gdbarch_data (gdbarch); |
72 | if (linux_gdbarch_data->siginfo_type != NULL) | |
73 | return linux_gdbarch_data->siginfo_type; | |
74 | ||
e9bb382b UW |
75 | int_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), |
76 | 0, "int"); | |
77 | uint_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), | |
78 | 1, "unsigned int"); | |
79 | long_type = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), | |
80 | 0, "long"); | |
4aa995e1 PA |
81 | void_ptr_type = lookup_pointer_type (builtin_type (gdbarch)->builtin_void); |
82 | ||
83 | /* sival_t */ | |
e9bb382b | 84 | sigval_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
4aa995e1 PA |
85 | TYPE_NAME (sigval_type) = xstrdup ("sigval_t"); |
86 | append_composite_type_field (sigval_type, "sival_int", int_type); | |
87 | append_composite_type_field (sigval_type, "sival_ptr", void_ptr_type); | |
88 | ||
89 | /* __pid_t */ | |
e3aa49af MS |
90 | pid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, |
91 | TYPE_LENGTH (int_type), "__pid_t"); | |
4aa995e1 | 92 | TYPE_TARGET_TYPE (pid_type) = int_type; |
e9bb382b | 93 | TYPE_TARGET_STUB (pid_type) = 1; |
4aa995e1 PA |
94 | |
95 | /* __uid_t */ | |
e3aa49af MS |
96 | uid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, |
97 | TYPE_LENGTH (uint_type), "__uid_t"); | |
4aa995e1 | 98 | TYPE_TARGET_TYPE (uid_type) = uint_type; |
e9bb382b | 99 | TYPE_TARGET_STUB (uid_type) = 1; |
4aa995e1 PA |
100 | |
101 | /* __clock_t */ | |
e3aa49af MS |
102 | clock_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, |
103 | TYPE_LENGTH (long_type), "__clock_t"); | |
4aa995e1 | 104 | TYPE_TARGET_TYPE (clock_type) = long_type; |
e9bb382b | 105 | TYPE_TARGET_STUB (clock_type) = 1; |
4aa995e1 PA |
106 | |
107 | /* _sifields */ | |
e9bb382b | 108 | sifields_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
4aa995e1 PA |
109 | |
110 | { | |
111 | const int si_max_size = 128; | |
112 | int si_pad_size; | |
113 | int size_of_int = gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT; | |
114 | ||
115 | /* _pad */ | |
116 | if (gdbarch_ptr_bit (gdbarch) == 64) | |
117 | si_pad_size = (si_max_size / size_of_int) - 4; | |
118 | else | |
119 | si_pad_size = (si_max_size / size_of_int) - 3; | |
120 | append_composite_type_field (sifields_type, "_pad", | |
121 | init_vector_type (int_type, si_pad_size)); | |
122 | } | |
123 | ||
124 | /* _kill */ | |
e9bb382b | 125 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
4aa995e1 PA |
126 | append_composite_type_field (type, "si_pid", pid_type); |
127 | append_composite_type_field (type, "si_uid", uid_type); | |
128 | append_composite_type_field (sifields_type, "_kill", type); | |
129 | ||
130 | /* _timer */ | |
e9bb382b | 131 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
4aa995e1 PA |
132 | append_composite_type_field (type, "si_tid", int_type); |
133 | append_composite_type_field (type, "si_overrun", int_type); | |
134 | append_composite_type_field (type, "si_sigval", sigval_type); | |
135 | append_composite_type_field (sifields_type, "_timer", type); | |
136 | ||
137 | /* _rt */ | |
e9bb382b | 138 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
4aa995e1 PA |
139 | append_composite_type_field (type, "si_pid", pid_type); |
140 | append_composite_type_field (type, "si_uid", uid_type); | |
141 | append_composite_type_field (type, "si_sigval", sigval_type); | |
142 | append_composite_type_field (sifields_type, "_rt", type); | |
143 | ||
144 | /* _sigchld */ | |
e9bb382b | 145 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
4aa995e1 PA |
146 | append_composite_type_field (type, "si_pid", pid_type); |
147 | append_composite_type_field (type, "si_uid", uid_type); | |
148 | append_composite_type_field (type, "si_status", int_type); | |
149 | append_composite_type_field (type, "si_utime", clock_type); | |
150 | append_composite_type_field (type, "si_stime", clock_type); | |
151 | append_composite_type_field (sifields_type, "_sigchld", type); | |
152 | ||
153 | /* _sigfault */ | |
e9bb382b | 154 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
4aa995e1 PA |
155 | append_composite_type_field (type, "si_addr", void_ptr_type); |
156 | append_composite_type_field (sifields_type, "_sigfault", type); | |
157 | ||
158 | /* _sigpoll */ | |
e9bb382b | 159 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
4aa995e1 PA |
160 | append_composite_type_field (type, "si_band", long_type); |
161 | append_composite_type_field (type, "si_fd", int_type); | |
162 | append_composite_type_field (sifields_type, "_sigpoll", type); | |
163 | ||
164 | /* struct siginfo */ | |
e9bb382b | 165 | siginfo_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
4aa995e1 PA |
166 | TYPE_NAME (siginfo_type) = xstrdup ("siginfo"); |
167 | append_composite_type_field (siginfo_type, "si_signo", int_type); | |
168 | append_composite_type_field (siginfo_type, "si_errno", int_type); | |
169 | append_composite_type_field (siginfo_type, "si_code", int_type); | |
170 | append_composite_type_field_aligned (siginfo_type, | |
171 | "_sifields", sifields_type, | |
172 | TYPE_LENGTH (long_type)); | |
173 | ||
06253dd3 JK |
174 | linux_gdbarch_data->siginfo_type = siginfo_type; |
175 | ||
4aa995e1 PA |
176 | return siginfo_type; |
177 | } | |
6b3ae818 | 178 | |
33fbcbee PA |
179 | static int |
180 | linux_has_shared_address_space (struct gdbarch *gdbarch) | |
6c95b8df PA |
181 | { |
182 | /* Determine whether we are running on uClinux or normal Linux | |
183 | kernel. */ | |
184 | CORE_ADDR dummy; | |
185 | int target_is_uclinux; | |
186 | ||
187 | target_is_uclinux | |
188 | = (target_auxv_search (¤t_target, AT_NULL, &dummy) > 0 | |
189 | && target_auxv_search (¤t_target, AT_PAGESZ, &dummy) == 0); | |
190 | ||
191 | return target_is_uclinux; | |
192 | } | |
a5ee0f0c PA |
193 | |
194 | /* This is how we want PTIDs from core files to be printed. */ | |
195 | ||
196 | static char * | |
197 | linux_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid) | |
198 | { | |
199 | static char buf[80]; | |
200 | ||
201 | if (ptid_get_lwp (ptid) != 0) | |
202 | { | |
203 | snprintf (buf, sizeof (buf), "LWP %ld", ptid_get_lwp (ptid)); | |
204 | return buf; | |
205 | } | |
206 | ||
207 | return normal_pid_to_str (ptid); | |
208 | } | |
209 | ||
3030c96e UW |
210 | /* Service function for corefiles and info proc. */ |
211 | ||
212 | static void | |
213 | read_mapping (const char *line, | |
214 | ULONGEST *addr, ULONGEST *endaddr, | |
215 | const char **permissions, size_t *permissions_len, | |
216 | ULONGEST *offset, | |
217 | const char **device, size_t *device_len, | |
218 | ULONGEST *inode, | |
219 | const char **filename) | |
220 | { | |
221 | const char *p = line; | |
222 | ||
223 | *addr = strtoulst (p, &p, 16); | |
224 | if (*p == '-') | |
225 | p++; | |
226 | *endaddr = strtoulst (p, &p, 16); | |
227 | ||
529480d0 | 228 | p = skip_spaces_const (p); |
3030c96e UW |
229 | *permissions = p; |
230 | while (*p && !isspace (*p)) | |
231 | p++; | |
232 | *permissions_len = p - *permissions; | |
233 | ||
234 | *offset = strtoulst (p, &p, 16); | |
235 | ||
529480d0 | 236 | p = skip_spaces_const (p); |
3030c96e UW |
237 | *device = p; |
238 | while (*p && !isspace (*p)) | |
239 | p++; | |
240 | *device_len = p - *device; | |
241 | ||
242 | *inode = strtoulst (p, &p, 10); | |
243 | ||
529480d0 | 244 | p = skip_spaces_const (p); |
3030c96e UW |
245 | *filename = p; |
246 | } | |
247 | ||
248 | /* Implement the "info proc" command. */ | |
249 | ||
250 | static void | |
251 | linux_info_proc (struct gdbarch *gdbarch, char *args, | |
252 | enum info_proc_what what) | |
253 | { | |
254 | /* A long is used for pid instead of an int to avoid a loss of precision | |
255 | compiler warning from the output of strtoul. */ | |
256 | long pid; | |
257 | int cmdline_f = (what == IP_MINIMAL || what == IP_CMDLINE || what == IP_ALL); | |
258 | int cwd_f = (what == IP_MINIMAL || what == IP_CWD || what == IP_ALL); | |
259 | int exe_f = (what == IP_MINIMAL || what == IP_EXE || what == IP_ALL); | |
260 | int mappings_f = (what == IP_MAPPINGS || what == IP_ALL); | |
261 | int status_f = (what == IP_STATUS || what == IP_ALL); | |
262 | int stat_f = (what == IP_STAT || what == IP_ALL); | |
263 | char filename[100]; | |
264 | gdb_byte *data; | |
265 | int target_errno; | |
266 | ||
267 | if (args && isdigit (args[0])) | |
268 | pid = strtoul (args, &args, 10); | |
269 | else | |
270 | { | |
271 | if (!target_has_execution) | |
272 | error (_("No current process: you must name one.")); | |
273 | if (current_inferior ()->fake_pid_p) | |
274 | error (_("Can't determine the current process's PID: you must name one.")); | |
275 | ||
276 | pid = current_inferior ()->pid; | |
277 | } | |
278 | ||
279 | args = skip_spaces (args); | |
280 | if (args && args[0]) | |
281 | error (_("Too many parameters: %s"), args); | |
282 | ||
283 | printf_filtered (_("process %ld\n"), pid); | |
284 | if (cmdline_f) | |
285 | { | |
286 | xsnprintf (filename, sizeof filename, "/proc/%ld/cmdline", pid); | |
287 | data = target_fileio_read_stralloc (filename); | |
288 | if (data) | |
289 | { | |
290 | struct cleanup *cleanup = make_cleanup (xfree, data); | |
291 | printf_filtered ("cmdline = '%s'\n", data); | |
292 | do_cleanups (cleanup); | |
293 | } | |
294 | else | |
295 | warning (_("unable to open /proc file '%s'"), filename); | |
296 | } | |
297 | if (cwd_f) | |
298 | { | |
299 | xsnprintf (filename, sizeof filename, "/proc/%ld/cwd", pid); | |
300 | data = target_fileio_readlink (filename, &target_errno); | |
301 | if (data) | |
302 | { | |
303 | struct cleanup *cleanup = make_cleanup (xfree, data); | |
304 | printf_filtered ("cwd = '%s'\n", data); | |
305 | do_cleanups (cleanup); | |
306 | } | |
307 | else | |
308 | warning (_("unable to read link '%s'"), filename); | |
309 | } | |
310 | if (exe_f) | |
311 | { | |
312 | xsnprintf (filename, sizeof filename, "/proc/%ld/exe", pid); | |
313 | data = target_fileio_readlink (filename, &target_errno); | |
314 | if (data) | |
315 | { | |
316 | struct cleanup *cleanup = make_cleanup (xfree, data); | |
317 | printf_filtered ("exe = '%s'\n", data); | |
318 | do_cleanups (cleanup); | |
319 | } | |
320 | else | |
321 | warning (_("unable to read link '%s'"), filename); | |
322 | } | |
323 | if (mappings_f) | |
324 | { | |
325 | xsnprintf (filename, sizeof filename, "/proc/%ld/maps", pid); | |
326 | data = target_fileio_read_stralloc (filename); | |
327 | if (data) | |
328 | { | |
329 | struct cleanup *cleanup = make_cleanup (xfree, data); | |
330 | char *line; | |
331 | ||
332 | printf_filtered (_("Mapped address spaces:\n\n")); | |
333 | if (gdbarch_addr_bit (gdbarch) == 32) | |
334 | { | |
335 | printf_filtered ("\t%10s %10s %10s %10s %s\n", | |
336 | "Start Addr", | |
337 | " End Addr", | |
338 | " Size", " Offset", "objfile"); | |
339 | } | |
340 | else | |
341 | { | |
342 | printf_filtered (" %18s %18s %10s %10s %s\n", | |
343 | "Start Addr", | |
344 | " End Addr", | |
345 | " Size", " Offset", "objfile"); | |
346 | } | |
347 | ||
348 | for (line = strtok (data, "\n"); line; line = strtok (NULL, "\n")) | |
349 | { | |
350 | ULONGEST addr, endaddr, offset, inode; | |
351 | const char *permissions, *device, *filename; | |
352 | size_t permissions_len, device_len; | |
353 | ||
354 | read_mapping (line, &addr, &endaddr, | |
355 | &permissions, &permissions_len, | |
356 | &offset, &device, &device_len, | |
357 | &inode, &filename); | |
358 | ||
359 | if (gdbarch_addr_bit (gdbarch) == 32) | |
360 | { | |
361 | printf_filtered ("\t%10s %10s %10s %10s %s\n", | |
362 | paddress (gdbarch, addr), | |
363 | paddress (gdbarch, endaddr), | |
364 | hex_string (endaddr - addr), | |
365 | hex_string (offset), | |
366 | *filename? filename : ""); | |
367 | } | |
368 | else | |
369 | { | |
370 | printf_filtered (" %18s %18s %10s %10s %s\n", | |
371 | paddress (gdbarch, addr), | |
372 | paddress (gdbarch, endaddr), | |
373 | hex_string (endaddr - addr), | |
374 | hex_string (offset), | |
375 | *filename? filename : ""); | |
376 | } | |
377 | } | |
378 | ||
379 | do_cleanups (cleanup); | |
380 | } | |
381 | else | |
382 | warning (_("unable to open /proc file '%s'"), filename); | |
383 | } | |
384 | if (status_f) | |
385 | { | |
386 | xsnprintf (filename, sizeof filename, "/proc/%ld/status", pid); | |
387 | data = target_fileio_read_stralloc (filename); | |
388 | if (data) | |
389 | { | |
390 | struct cleanup *cleanup = make_cleanup (xfree, data); | |
391 | puts_filtered (data); | |
392 | do_cleanups (cleanup); | |
393 | } | |
394 | else | |
395 | warning (_("unable to open /proc file '%s'"), filename); | |
396 | } | |
397 | if (stat_f) | |
398 | { | |
399 | xsnprintf (filename, sizeof filename, "/proc/%ld/stat", pid); | |
400 | data = target_fileio_read_stralloc (filename); | |
401 | if (data) | |
402 | { | |
403 | struct cleanup *cleanup = make_cleanup (xfree, data); | |
404 | const char *p = data; | |
3030c96e UW |
405 | |
406 | printf_filtered (_("Process: %s\n"), | |
407 | pulongest (strtoulst (p, &p, 10))); | |
408 | ||
529480d0 | 409 | p = skip_spaces_const (p); |
a71b5a38 | 410 | if (*p == '(') |
3030c96e | 411 | { |
a71b5a38 UW |
412 | const char *ep = strchr (p, ')'); |
413 | if (ep != NULL) | |
414 | { | |
415 | printf_filtered ("Exec file: %.*s\n", | |
416 | (int) (ep - p - 1), p + 1); | |
417 | p = ep + 1; | |
418 | } | |
3030c96e UW |
419 | } |
420 | ||
529480d0 | 421 | p = skip_spaces_const (p); |
3030c96e UW |
422 | if (*p) |
423 | printf_filtered (_("State: %c\n"), *p++); | |
424 | ||
425 | if (*p) | |
426 | printf_filtered (_("Parent process: %s\n"), | |
427 | pulongest (strtoulst (p, &p, 10))); | |
428 | if (*p) | |
429 | printf_filtered (_("Process group: %s\n"), | |
430 | pulongest (strtoulst (p, &p, 10))); | |
431 | if (*p) | |
432 | printf_filtered (_("Session id: %s\n"), | |
433 | pulongest (strtoulst (p, &p, 10))); | |
434 | if (*p) | |
435 | printf_filtered (_("TTY: %s\n"), | |
436 | pulongest (strtoulst (p, &p, 10))); | |
437 | if (*p) | |
438 | printf_filtered (_("TTY owner process group: %s\n"), | |
439 | pulongest (strtoulst (p, &p, 10))); | |
440 | ||
441 | if (*p) | |
442 | printf_filtered (_("Flags: %s\n"), | |
443 | hex_string (strtoulst (p, &p, 10))); | |
444 | if (*p) | |
445 | printf_filtered (_("Minor faults (no memory page): %s\n"), | |
446 | pulongest (strtoulst (p, &p, 10))); | |
447 | if (*p) | |
448 | printf_filtered (_("Minor faults, children: %s\n"), | |
449 | pulongest (strtoulst (p, &p, 10))); | |
450 | if (*p) | |
451 | printf_filtered (_("Major faults (memory page faults): %s\n"), | |
452 | pulongest (strtoulst (p, &p, 10))); | |
453 | if (*p) | |
454 | printf_filtered (_("Major faults, children: %s\n"), | |
455 | pulongest (strtoulst (p, &p, 10))); | |
456 | if (*p) | |
457 | printf_filtered (_("utime: %s\n"), | |
458 | pulongest (strtoulst (p, &p, 10))); | |
459 | if (*p) | |
460 | printf_filtered (_("stime: %s\n"), | |
461 | pulongest (strtoulst (p, &p, 10))); | |
462 | if (*p) | |
463 | printf_filtered (_("utime, children: %s\n"), | |
464 | pulongest (strtoulst (p, &p, 10))); | |
465 | if (*p) | |
466 | printf_filtered (_("stime, children: %s\n"), | |
467 | pulongest (strtoulst (p, &p, 10))); | |
468 | if (*p) | |
469 | printf_filtered (_("jiffies remaining in current " | |
470 | "time slice: %s\n"), | |
471 | pulongest (strtoulst (p, &p, 10))); | |
472 | if (*p) | |
473 | printf_filtered (_("'nice' value: %s\n"), | |
474 | pulongest (strtoulst (p, &p, 10))); | |
475 | if (*p) | |
476 | printf_filtered (_("jiffies until next timeout: %s\n"), | |
477 | pulongest (strtoulst (p, &p, 10))); | |
478 | if (*p) | |
479 | printf_filtered (_("jiffies until next SIGALRM: %s\n"), | |
480 | pulongest (strtoulst (p, &p, 10))); | |
481 | if (*p) | |
482 | printf_filtered (_("start time (jiffies since " | |
483 | "system boot): %s\n"), | |
484 | pulongest (strtoulst (p, &p, 10))); | |
485 | if (*p) | |
486 | printf_filtered (_("Virtual memory size: %s\n"), | |
487 | pulongest (strtoulst (p, &p, 10))); | |
488 | if (*p) | |
489 | printf_filtered (_("Resident set size: %s\n"), | |
490 | pulongest (strtoulst (p, &p, 10))); | |
491 | if (*p) | |
492 | printf_filtered (_("rlim: %s\n"), | |
493 | pulongest (strtoulst (p, &p, 10))); | |
494 | if (*p) | |
495 | printf_filtered (_("Start of text: %s\n"), | |
496 | hex_string (strtoulst (p, &p, 10))); | |
497 | if (*p) | |
498 | printf_filtered (_("End of text: %s\n"), | |
499 | hex_string (strtoulst (p, &p, 10))); | |
500 | if (*p) | |
501 | printf_filtered (_("Start of stack: %s\n"), | |
502 | hex_string (strtoulst (p, &p, 10))); | |
503 | #if 0 /* Don't know how architecture-dependent the rest is... | |
504 | Anyway the signal bitmap info is available from "status". */ | |
505 | if (*p) | |
506 | printf_filtered (_("Kernel stack pointer: %s\n"), | |
507 | hex_string (strtoulst (p, &p, 10))); | |
508 | if (*p) | |
509 | printf_filtered (_("Kernel instr pointer: %s\n"), | |
510 | hex_string (strtoulst (p, &p, 10))); | |
511 | if (*p) | |
512 | printf_filtered (_("Pending signals bitmap: %s\n"), | |
513 | hex_string (strtoulst (p, &p, 10))); | |
514 | if (*p) | |
515 | printf_filtered (_("Blocked signals bitmap: %s\n"), | |
516 | hex_string (strtoulst (p, &p, 10))); | |
517 | if (*p) | |
518 | printf_filtered (_("Ignored signals bitmap: %s\n"), | |
519 | hex_string (strtoulst (p, &p, 10))); | |
520 | if (*p) | |
521 | printf_filtered (_("Catched signals bitmap: %s\n"), | |
522 | hex_string (strtoulst (p, &p, 10))); | |
523 | if (*p) | |
524 | printf_filtered (_("wchan (system call): %s\n"), | |
525 | hex_string (strtoulst (p, &p, 10))); | |
526 | #endif | |
527 | do_cleanups (cleanup); | |
528 | } | |
529 | else | |
530 | warning (_("unable to open /proc file '%s'"), filename); | |
531 | } | |
532 | } | |
533 | ||
451b7c33 TT |
534 | /* Implement "info proc mappings" for a corefile. */ |
535 | ||
536 | static void | |
537 | linux_core_info_proc_mappings (struct gdbarch *gdbarch, char *args) | |
538 | { | |
539 | asection *section; | |
540 | ULONGEST count, page_size; | |
541 | unsigned char *descdata, *filenames, *descend, *contents; | |
542 | size_t note_size; | |
543 | unsigned int addr_size_bits, addr_size; | |
544 | struct cleanup *cleanup; | |
545 | struct gdbarch *core_gdbarch = gdbarch_from_bfd (core_bfd); | |
546 | /* We assume this for reading 64-bit core files. */ | |
547 | gdb_static_assert (sizeof (ULONGEST) >= 8); | |
548 | ||
549 | section = bfd_get_section_by_name (core_bfd, ".note.linuxcore.file"); | |
550 | if (section == NULL) | |
551 | { | |
552 | warning (_("unable to find mappings in core file")); | |
553 | return; | |
554 | } | |
555 | ||
556 | addr_size_bits = gdbarch_addr_bit (core_gdbarch); | |
557 | addr_size = addr_size_bits / 8; | |
558 | note_size = bfd_get_section_size (section); | |
559 | ||
560 | if (note_size < 2 * addr_size) | |
561 | error (_("malformed core note - too short for header")); | |
562 | ||
563 | contents = xmalloc (note_size); | |
564 | cleanup = make_cleanup (xfree, contents); | |
565 | if (!bfd_get_section_contents (core_bfd, section, contents, 0, note_size)) | |
566 | error (_("could not get core note contents")); | |
567 | ||
568 | descdata = contents; | |
569 | descend = descdata + note_size; | |
570 | ||
571 | if (descdata[note_size - 1] != '\0') | |
572 | error (_("malformed note - does not end with \\0")); | |
573 | ||
574 | count = bfd_get (addr_size_bits, core_bfd, descdata); | |
575 | descdata += addr_size; | |
576 | ||
577 | page_size = bfd_get (addr_size_bits, core_bfd, descdata); | |
578 | descdata += addr_size; | |
579 | ||
580 | if (note_size < 2 * addr_size + count * 3 * addr_size) | |
581 | error (_("malformed note - too short for supplied file count")); | |
582 | ||
583 | printf_filtered (_("Mapped address spaces:\n\n")); | |
584 | if (gdbarch_addr_bit (gdbarch) == 32) | |
585 | { | |
586 | printf_filtered ("\t%10s %10s %10s %10s %s\n", | |
587 | "Start Addr", | |
588 | " End Addr", | |
589 | " Size", " Offset", "objfile"); | |
590 | } | |
591 | else | |
592 | { | |
593 | printf_filtered (" %18s %18s %10s %10s %s\n", | |
594 | "Start Addr", | |
595 | " End Addr", | |
596 | " Size", " Offset", "objfile"); | |
597 | } | |
598 | ||
599 | filenames = descdata + count * 3 * addr_size; | |
600 | while (--count > 0) | |
601 | { | |
602 | ULONGEST start, end, file_ofs; | |
603 | ||
604 | if (filenames == descend) | |
605 | error (_("malformed note - filenames end too early")); | |
606 | ||
607 | start = bfd_get (addr_size_bits, core_bfd, descdata); | |
608 | descdata += addr_size; | |
609 | end = bfd_get (addr_size_bits, core_bfd, descdata); | |
610 | descdata += addr_size; | |
611 | file_ofs = bfd_get (addr_size_bits, core_bfd, descdata); | |
612 | descdata += addr_size; | |
613 | ||
614 | file_ofs *= page_size; | |
615 | ||
616 | if (gdbarch_addr_bit (gdbarch) == 32) | |
617 | printf_filtered ("\t%10s %10s %10s %10s %s\n", | |
618 | paddress (gdbarch, start), | |
619 | paddress (gdbarch, end), | |
620 | hex_string (end - start), | |
621 | hex_string (file_ofs), | |
622 | filenames); | |
623 | else | |
624 | printf_filtered (" %18s %18s %10s %10s %s\n", | |
625 | paddress (gdbarch, start), | |
626 | paddress (gdbarch, end), | |
627 | hex_string (end - start), | |
628 | hex_string (file_ofs), | |
629 | filenames); | |
630 | ||
631 | filenames += 1 + strlen ((char *) filenames); | |
632 | } | |
633 | ||
634 | do_cleanups (cleanup); | |
635 | } | |
636 | ||
637 | /* Implement "info proc" for a corefile. */ | |
638 | ||
639 | static void | |
640 | linux_core_info_proc (struct gdbarch *gdbarch, char *args, | |
641 | enum info_proc_what what) | |
642 | { | |
643 | int exe_f = (what == IP_MINIMAL || what == IP_EXE || what == IP_ALL); | |
644 | int mappings_f = (what == IP_MAPPINGS || what == IP_ALL); | |
645 | ||
646 | if (exe_f) | |
647 | { | |
648 | const char *exe; | |
649 | ||
650 | exe = bfd_core_file_failing_command (core_bfd); | |
651 | if (exe != NULL) | |
652 | printf_filtered ("exe = '%s'\n", exe); | |
653 | else | |
654 | warning (_("unable to find command name in core file")); | |
655 | } | |
656 | ||
657 | if (mappings_f) | |
658 | linux_core_info_proc_mappings (gdbarch, args); | |
659 | ||
660 | if (!exe_f && !mappings_f) | |
661 | error (_("unable to handle request")); | |
662 | } | |
663 | ||
664 | typedef int linux_find_memory_region_ftype (ULONGEST vaddr, ULONGEST size, | |
665 | ULONGEST offset, ULONGEST inode, | |
666 | int read, int write, | |
667 | int exec, int modified, | |
668 | const char *filename, | |
669 | void *data); | |
670 | ||
35c2fab7 UW |
671 | /* List memory regions in the inferior for a corefile. */ |
672 | ||
673 | static int | |
451b7c33 TT |
674 | linux_find_memory_regions_full (struct gdbarch *gdbarch, |
675 | linux_find_memory_region_ftype *func, | |
676 | void *obfd) | |
35c2fab7 UW |
677 | { |
678 | char filename[100]; | |
679 | gdb_byte *data; | |
680 | ||
681 | /* We need to know the real target PID to access /proc. */ | |
682 | if (current_inferior ()->fake_pid_p) | |
683 | return 1; | |
684 | ||
685 | xsnprintf (filename, sizeof filename, | |
4f69f4c2 | 686 | "/proc/%d/smaps", current_inferior ()->pid); |
35c2fab7 | 687 | data = target_fileio_read_stralloc (filename); |
4f69f4c2 JK |
688 | if (data == NULL) |
689 | { | |
690 | /* Older Linux kernels did not support /proc/PID/smaps. */ | |
691 | xsnprintf (filename, sizeof filename, | |
692 | "/proc/%d/maps", current_inferior ()->pid); | |
693 | data = target_fileio_read_stralloc (filename); | |
694 | } | |
35c2fab7 UW |
695 | if (data) |
696 | { | |
697 | struct cleanup *cleanup = make_cleanup (xfree, data); | |
698 | char *line; | |
699 | ||
4f69f4c2 JK |
700 | line = strtok (data, "\n"); |
701 | while (line) | |
35c2fab7 UW |
702 | { |
703 | ULONGEST addr, endaddr, offset, inode; | |
704 | const char *permissions, *device, *filename; | |
705 | size_t permissions_len, device_len; | |
706 | int read, write, exec; | |
4f69f4c2 | 707 | int modified = 0, has_anonymous = 0; |
35c2fab7 UW |
708 | |
709 | read_mapping (line, &addr, &endaddr, &permissions, &permissions_len, | |
710 | &offset, &device, &device_len, &inode, &filename); | |
711 | ||
712 | /* Decode permissions. */ | |
713 | read = (memchr (permissions, 'r', permissions_len) != 0); | |
714 | write = (memchr (permissions, 'w', permissions_len) != 0); | |
715 | exec = (memchr (permissions, 'x', permissions_len) != 0); | |
716 | ||
4f69f4c2 JK |
717 | /* Try to detect if region was modified by parsing smaps counters. */ |
718 | for (line = strtok (NULL, "\n"); | |
719 | line && line[0] >= 'A' && line[0] <= 'Z'; | |
720 | line = strtok (NULL, "\n")) | |
721 | { | |
722 | char keyword[64 + 1]; | |
723 | unsigned long number; | |
724 | ||
725 | if (sscanf (line, "%64s%lu kB\n", keyword, &number) != 2) | |
726 | { | |
727 | warning (_("Error parsing {s,}maps file '%s'"), filename); | |
728 | break; | |
729 | } | |
730 | if (strcmp (keyword, "Anonymous:") == 0) | |
731 | has_anonymous = 1; | |
732 | if (number != 0 && (strcmp (keyword, "Shared_Dirty:") == 0 | |
733 | || strcmp (keyword, "Private_Dirty:") == 0 | |
734 | || strcmp (keyword, "Swap:") == 0 | |
735 | || strcmp (keyword, "Anonymous:") == 0)) | |
736 | modified = 1; | |
737 | } | |
738 | ||
739 | /* Older Linux kernels did not support the "Anonymous:" counter. | |
740 | If it is missing, we can't be sure - dump all the pages. */ | |
741 | if (!has_anonymous) | |
742 | modified = 1; | |
743 | ||
35c2fab7 | 744 | /* Invoke the callback function to create the corefile segment. */ |
451b7c33 TT |
745 | func (addr, endaddr - addr, offset, inode, |
746 | read, write, exec, modified, filename, obfd); | |
35c2fab7 UW |
747 | } |
748 | ||
749 | do_cleanups (cleanup); | |
750 | return 0; | |
751 | } | |
752 | ||
753 | return 1; | |
754 | } | |
755 | ||
451b7c33 TT |
756 | /* A structure for passing information through |
757 | linux_find_memory_regions_full. */ | |
758 | ||
759 | struct linux_find_memory_regions_data | |
760 | { | |
761 | /* The original callback. */ | |
762 | ||
763 | find_memory_region_ftype func; | |
764 | ||
765 | /* The original datum. */ | |
766 | ||
767 | void *obfd; | |
768 | }; | |
769 | ||
770 | /* A callback for linux_find_memory_regions that converts between the | |
771 | "full"-style callback and find_memory_region_ftype. */ | |
772 | ||
773 | static int | |
774 | linux_find_memory_regions_thunk (ULONGEST vaddr, ULONGEST size, | |
775 | ULONGEST offset, ULONGEST inode, | |
776 | int read, int write, int exec, int modified, | |
777 | const char *filename, void *arg) | |
778 | { | |
779 | struct linux_find_memory_regions_data *data = arg; | |
780 | ||
781 | return data->func (vaddr, size, read, write, exec, modified, data->obfd); | |
782 | } | |
783 | ||
784 | /* A variant of linux_find_memory_regions_full that is suitable as the | |
785 | gdbarch find_memory_regions method. */ | |
786 | ||
787 | static int | |
788 | linux_find_memory_regions (struct gdbarch *gdbarch, | |
789 | find_memory_region_ftype func, void *obfd) | |
790 | { | |
791 | struct linux_find_memory_regions_data data; | |
792 | ||
793 | data.func = func; | |
794 | data.obfd = obfd; | |
795 | ||
796 | return linux_find_memory_regions_full (gdbarch, | |
797 | linux_find_memory_regions_thunk, | |
798 | &data); | |
799 | } | |
800 | ||
6432734d UW |
801 | /* Determine which signal stopped execution. */ |
802 | ||
803 | static int | |
804 | find_signalled_thread (struct thread_info *info, void *data) | |
805 | { | |
a493e3e2 | 806 | if (info->suspend.stop_signal != GDB_SIGNAL_0 |
6432734d UW |
807 | && ptid_get_pid (info->ptid) == ptid_get_pid (inferior_ptid)) |
808 | return 1; | |
809 | ||
810 | return 0; | |
811 | } | |
812 | ||
2ea28649 | 813 | static enum gdb_signal |
6432734d UW |
814 | find_stop_signal (void) |
815 | { | |
816 | struct thread_info *info = | |
817 | iterate_over_threads (find_signalled_thread, NULL); | |
818 | ||
819 | if (info) | |
820 | return info->suspend.stop_signal; | |
821 | else | |
a493e3e2 | 822 | return GDB_SIGNAL_0; |
6432734d UW |
823 | } |
824 | ||
825 | /* Generate corefile notes for SPU contexts. */ | |
826 | ||
827 | static char * | |
828 | linux_spu_make_corefile_notes (bfd *obfd, char *note_data, int *note_size) | |
829 | { | |
830 | static const char *spu_files[] = | |
831 | { | |
832 | "object-id", | |
833 | "mem", | |
834 | "regs", | |
835 | "fpcr", | |
836 | "lslr", | |
837 | "decr", | |
838 | "decr_status", | |
839 | "signal1", | |
840 | "signal1_type", | |
841 | "signal2", | |
842 | "signal2_type", | |
843 | "event_mask", | |
844 | "event_status", | |
845 | "mbox_info", | |
846 | "ibox_info", | |
847 | "wbox_info", | |
848 | "dma_info", | |
849 | "proxydma_info", | |
850 | }; | |
851 | ||
f5656ead | 852 | enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ()); |
6432734d UW |
853 | gdb_byte *spu_ids; |
854 | LONGEST i, j, size; | |
855 | ||
856 | /* Determine list of SPU ids. */ | |
857 | size = target_read_alloc (¤t_target, TARGET_OBJECT_SPU, | |
858 | NULL, &spu_ids); | |
859 | ||
860 | /* Generate corefile notes for each SPU file. */ | |
861 | for (i = 0; i < size; i += 4) | |
862 | { | |
863 | int fd = extract_unsigned_integer (spu_ids + i, 4, byte_order); | |
864 | ||
865 | for (j = 0; j < sizeof (spu_files) / sizeof (spu_files[0]); j++) | |
866 | { | |
867 | char annex[32], note_name[32]; | |
868 | gdb_byte *spu_data; | |
869 | LONGEST spu_len; | |
870 | ||
871 | xsnprintf (annex, sizeof annex, "%d/%s", fd, spu_files[j]); | |
872 | spu_len = target_read_alloc (¤t_target, TARGET_OBJECT_SPU, | |
873 | annex, &spu_data); | |
874 | if (spu_len > 0) | |
875 | { | |
876 | xsnprintf (note_name, sizeof note_name, "SPU/%s", annex); | |
877 | note_data = elfcore_write_note (obfd, note_data, note_size, | |
878 | note_name, NT_SPU, | |
879 | spu_data, spu_len); | |
880 | xfree (spu_data); | |
881 | ||
882 | if (!note_data) | |
883 | { | |
884 | xfree (spu_ids); | |
885 | return NULL; | |
886 | } | |
887 | } | |
888 | } | |
889 | } | |
890 | ||
891 | if (size > 0) | |
892 | xfree (spu_ids); | |
893 | ||
894 | return note_data; | |
895 | } | |
896 | ||
451b7c33 TT |
897 | /* This is used to pass information from |
898 | linux_make_mappings_corefile_notes through | |
899 | linux_find_memory_regions_full. */ | |
900 | ||
901 | struct linux_make_mappings_data | |
902 | { | |
903 | /* Number of files mapped. */ | |
904 | ULONGEST file_count; | |
905 | ||
906 | /* The obstack for the main part of the data. */ | |
907 | struct obstack *data_obstack; | |
908 | ||
909 | /* The filename obstack. */ | |
910 | struct obstack *filename_obstack; | |
911 | ||
912 | /* The architecture's "long" type. */ | |
913 | struct type *long_type; | |
914 | }; | |
915 | ||
916 | static linux_find_memory_region_ftype linux_make_mappings_callback; | |
917 | ||
918 | /* A callback for linux_find_memory_regions_full that updates the | |
919 | mappings data for linux_make_mappings_corefile_notes. */ | |
920 | ||
921 | static int | |
922 | linux_make_mappings_callback (ULONGEST vaddr, ULONGEST size, | |
923 | ULONGEST offset, ULONGEST inode, | |
924 | int read, int write, int exec, int modified, | |
925 | const char *filename, void *data) | |
926 | { | |
927 | struct linux_make_mappings_data *map_data = data; | |
928 | gdb_byte buf[sizeof (ULONGEST)]; | |
929 | ||
930 | if (*filename == '\0' || inode == 0) | |
931 | return 0; | |
932 | ||
933 | ++map_data->file_count; | |
934 | ||
935 | pack_long (buf, map_data->long_type, vaddr); | |
936 | obstack_grow (map_data->data_obstack, buf, TYPE_LENGTH (map_data->long_type)); | |
937 | pack_long (buf, map_data->long_type, vaddr + size); | |
938 | obstack_grow (map_data->data_obstack, buf, TYPE_LENGTH (map_data->long_type)); | |
939 | pack_long (buf, map_data->long_type, offset); | |
940 | obstack_grow (map_data->data_obstack, buf, TYPE_LENGTH (map_data->long_type)); | |
941 | ||
942 | obstack_grow_str0 (map_data->filename_obstack, filename); | |
943 | ||
944 | return 0; | |
945 | } | |
946 | ||
947 | /* Write the file mapping data to the core file, if possible. OBFD is | |
948 | the output BFD. NOTE_DATA is the current note data, and NOTE_SIZE | |
949 | is a pointer to the note size. Returns the new NOTE_DATA and | |
950 | updates NOTE_SIZE. */ | |
951 | ||
952 | static char * | |
953 | linux_make_mappings_corefile_notes (struct gdbarch *gdbarch, bfd *obfd, | |
954 | char *note_data, int *note_size) | |
955 | { | |
956 | struct cleanup *cleanup; | |
957 | struct obstack data_obstack, filename_obstack; | |
958 | struct linux_make_mappings_data mapping_data; | |
959 | struct type *long_type | |
960 | = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), 0, "long"); | |
961 | gdb_byte buf[sizeof (ULONGEST)]; | |
962 | ||
963 | obstack_init (&data_obstack); | |
964 | cleanup = make_cleanup_obstack_free (&data_obstack); | |
965 | obstack_init (&filename_obstack); | |
966 | make_cleanup_obstack_free (&filename_obstack); | |
967 | ||
968 | mapping_data.file_count = 0; | |
969 | mapping_data.data_obstack = &data_obstack; | |
970 | mapping_data.filename_obstack = &filename_obstack; | |
971 | mapping_data.long_type = long_type; | |
972 | ||
973 | /* Reserve space for the count. */ | |
974 | obstack_blank (&data_obstack, TYPE_LENGTH (long_type)); | |
975 | /* We always write the page size as 1 since we have no good way to | |
976 | determine the correct value. */ | |
977 | pack_long (buf, long_type, 1); | |
978 | obstack_grow (&data_obstack, buf, TYPE_LENGTH (long_type)); | |
979 | ||
980 | linux_find_memory_regions_full (gdbarch, linux_make_mappings_callback, | |
981 | &mapping_data); | |
982 | ||
983 | if (mapping_data.file_count != 0) | |
984 | { | |
985 | /* Write the count to the obstack. */ | |
986 | pack_long (obstack_base (&data_obstack), long_type, | |
987 | mapping_data.file_count); | |
988 | ||
989 | /* Copy the filenames to the data obstack. */ | |
990 | obstack_grow (&data_obstack, obstack_base (&filename_obstack), | |
991 | obstack_object_size (&filename_obstack)); | |
992 | ||
993 | note_data = elfcore_write_note (obfd, note_data, note_size, | |
994 | "CORE", NT_FILE, | |
995 | obstack_base (&data_obstack), | |
996 | obstack_object_size (&data_obstack)); | |
997 | } | |
998 | ||
999 | do_cleanups (cleanup); | |
1000 | return note_data; | |
1001 | } | |
1002 | ||
6432734d UW |
1003 | /* Records the thread's register state for the corefile note |
1004 | section. */ | |
1005 | ||
1006 | static char * | |
1007 | linux_collect_thread_registers (const struct regcache *regcache, | |
1008 | ptid_t ptid, bfd *obfd, | |
1009 | char *note_data, int *note_size, | |
2ea28649 | 1010 | enum gdb_signal stop_signal) |
6432734d UW |
1011 | { |
1012 | struct gdbarch *gdbarch = get_regcache_arch (regcache); | |
1013 | struct core_regset_section *sect_list; | |
1014 | unsigned long lwp; | |
1015 | ||
1016 | sect_list = gdbarch_core_regset_sections (gdbarch); | |
1017 | gdb_assert (sect_list); | |
1018 | ||
1019 | /* For remote targets the LWP may not be available, so use the TID. */ | |
1020 | lwp = ptid_get_lwp (ptid); | |
1021 | if (!lwp) | |
1022 | lwp = ptid_get_tid (ptid); | |
1023 | ||
1024 | while (sect_list->sect_name != NULL) | |
1025 | { | |
1026 | const struct regset *regset; | |
1027 | char *buf; | |
1028 | ||
1029 | regset = gdbarch_regset_from_core_section (gdbarch, | |
1030 | sect_list->sect_name, | |
1031 | sect_list->size); | |
1032 | gdb_assert (regset && regset->collect_regset); | |
1033 | ||
1034 | buf = xmalloc (sect_list->size); | |
1035 | regset->collect_regset (regset, regcache, -1, buf, sect_list->size); | |
1036 | ||
1037 | /* PRSTATUS still needs to be treated specially. */ | |
1038 | if (strcmp (sect_list->sect_name, ".reg") == 0) | |
1039 | note_data = (char *) elfcore_write_prstatus | |
1040 | (obfd, note_data, note_size, lwp, | |
2ea28649 | 1041 | gdb_signal_to_host (stop_signal), buf); |
6432734d UW |
1042 | else |
1043 | note_data = (char *) elfcore_write_register_note | |
1044 | (obfd, note_data, note_size, | |
1045 | sect_list->sect_name, buf, sect_list->size); | |
1046 | xfree (buf); | |
1047 | sect_list++; | |
1048 | ||
1049 | if (!note_data) | |
1050 | return NULL; | |
1051 | } | |
1052 | ||
1053 | return note_data; | |
1054 | } | |
1055 | ||
9015683b TT |
1056 | /* Fetch the siginfo data for the current thread, if it exists. If |
1057 | there is no data, or we could not read it, return NULL. Otherwise, | |
1058 | return a newly malloc'd buffer holding the data and fill in *SIZE | |
1059 | with the size of the data. The caller is responsible for freeing | |
1060 | the data. */ | |
1061 | ||
1062 | static gdb_byte * | |
1063 | linux_get_siginfo_data (struct gdbarch *gdbarch, LONGEST *size) | |
1064 | { | |
1065 | struct type *siginfo_type; | |
1066 | gdb_byte *buf; | |
1067 | LONGEST bytes_read; | |
1068 | struct cleanup *cleanups; | |
1069 | ||
1070 | if (!gdbarch_get_siginfo_type_p (gdbarch)) | |
1071 | return NULL; | |
1072 | ||
1073 | siginfo_type = gdbarch_get_siginfo_type (gdbarch); | |
1074 | ||
1075 | buf = xmalloc (TYPE_LENGTH (siginfo_type)); | |
1076 | cleanups = make_cleanup (xfree, buf); | |
1077 | ||
1078 | bytes_read = target_read (¤t_target, TARGET_OBJECT_SIGNAL_INFO, NULL, | |
1079 | buf, 0, TYPE_LENGTH (siginfo_type)); | |
1080 | if (bytes_read == TYPE_LENGTH (siginfo_type)) | |
1081 | { | |
1082 | discard_cleanups (cleanups); | |
1083 | *size = bytes_read; | |
1084 | } | |
1085 | else | |
1086 | { | |
1087 | do_cleanups (cleanups); | |
1088 | buf = NULL; | |
1089 | } | |
1090 | ||
1091 | return buf; | |
1092 | } | |
1093 | ||
6432734d UW |
1094 | struct linux_corefile_thread_data |
1095 | { | |
1096 | struct gdbarch *gdbarch; | |
1097 | int pid; | |
1098 | bfd *obfd; | |
1099 | char *note_data; | |
1100 | int *note_size; | |
1101 | int num_notes; | |
2ea28649 | 1102 | enum gdb_signal stop_signal; |
6432734d UW |
1103 | linux_collect_thread_registers_ftype collect; |
1104 | }; | |
1105 | ||
1106 | /* Called by gdbthread.c once per thread. Records the thread's | |
1107 | register state for the corefile note section. */ | |
1108 | ||
1109 | static int | |
1110 | linux_corefile_thread_callback (struct thread_info *info, void *data) | |
1111 | { | |
1112 | struct linux_corefile_thread_data *args = data; | |
1113 | ||
1114 | if (ptid_get_pid (info->ptid) == args->pid) | |
1115 | { | |
1116 | struct cleanup *old_chain; | |
1117 | struct regcache *regcache; | |
9015683b TT |
1118 | gdb_byte *siginfo_data; |
1119 | LONGEST siginfo_size; | |
1120 | ||
6432734d UW |
1121 | regcache = get_thread_arch_regcache (info->ptid, args->gdbarch); |
1122 | ||
1123 | old_chain = save_inferior_ptid (); | |
1124 | inferior_ptid = info->ptid; | |
1125 | target_fetch_registers (regcache, -1); | |
9015683b | 1126 | siginfo_data = linux_get_siginfo_data (args->gdbarch, &siginfo_size); |
6432734d UW |
1127 | do_cleanups (old_chain); |
1128 | ||
9015683b TT |
1129 | old_chain = make_cleanup (xfree, siginfo_data); |
1130 | ||
6432734d UW |
1131 | args->note_data = args->collect (regcache, info->ptid, args->obfd, |
1132 | args->note_data, args->note_size, | |
1133 | args->stop_signal); | |
1134 | args->num_notes++; | |
9015683b TT |
1135 | |
1136 | if (siginfo_data != NULL) | |
1137 | { | |
1138 | args->note_data = elfcore_write_note (args->obfd, | |
1139 | args->note_data, | |
1140 | args->note_size, | |
1141 | "CORE", NT_SIGINFO, | |
1142 | siginfo_data, siginfo_size); | |
1143 | args->num_notes++; | |
1144 | } | |
1145 | ||
1146 | do_cleanups (old_chain); | |
6432734d UW |
1147 | } |
1148 | ||
1149 | return !args->note_data; | |
1150 | } | |
1151 | ||
b3ac9c77 SDJ |
1152 | /* Fill the PRPSINFO structure with information about the process being |
1153 | debugged. Returns 1 in case of success, 0 for failures. Please note that | |
1154 | even if the structure cannot be entirely filled (e.g., GDB was unable to | |
1155 | gather information about the process UID/GID), this function will still | |
1156 | return 1 since some information was already recorded. It will only return | |
1157 | 0 iff nothing can be gathered. */ | |
1158 | ||
1159 | static int | |
1160 | linux_fill_prpsinfo (struct elf_internal_linux_prpsinfo *p) | |
1161 | { | |
1162 | /* The filename which we will use to obtain some info about the process. | |
1163 | We will basically use this to store the `/proc/PID/FILENAME' file. */ | |
1164 | char filename[100]; | |
1165 | /* The full name of the program which generated the corefile. */ | |
1166 | char *fname; | |
1167 | /* The basename of the executable. */ | |
1168 | const char *basename; | |
1169 | /* The arguments of the program. */ | |
1170 | char *psargs; | |
1171 | char *infargs; | |
1172 | /* The contents of `/proc/PID/stat' and `/proc/PID/status' files. */ | |
1173 | char *proc_stat, *proc_status; | |
1174 | /* Temporary buffer. */ | |
1175 | char *tmpstr; | |
1176 | /* The valid states of a process, according to the Linux kernel. */ | |
1177 | const char valid_states[] = "RSDTZW"; | |
1178 | /* The program state. */ | |
1179 | const char *prog_state; | |
1180 | /* The state of the process. */ | |
1181 | char pr_sname; | |
1182 | /* The PID of the program which generated the corefile. */ | |
1183 | pid_t pid; | |
1184 | /* Process flags. */ | |
1185 | unsigned int pr_flag; | |
1186 | /* Process nice value. */ | |
1187 | long pr_nice; | |
1188 | /* The number of fields read by `sscanf'. */ | |
1189 | int n_fields = 0; | |
1190 | /* Cleanups. */ | |
1191 | struct cleanup *c; | |
1192 | int i; | |
1193 | ||
1194 | gdb_assert (p != NULL); | |
1195 | ||
1196 | /* Obtaining PID and filename. */ | |
1197 | pid = ptid_get_pid (inferior_ptid); | |
1198 | xsnprintf (filename, sizeof (filename), "/proc/%d/cmdline", (int) pid); | |
1199 | fname = target_fileio_read_stralloc (filename); | |
1200 | ||
1201 | if (fname == NULL || *fname == '\0') | |
1202 | { | |
1203 | /* No program name was read, so we won't be able to retrieve more | |
1204 | information about the process. */ | |
1205 | xfree (fname); | |
1206 | return 0; | |
1207 | } | |
1208 | ||
1209 | c = make_cleanup (xfree, fname); | |
1210 | memset (p, 0, sizeof (*p)); | |
1211 | ||
1212 | /* Defining the PID. */ | |
1213 | p->pr_pid = pid; | |
1214 | ||
1215 | /* Copying the program name. Only the basename matters. */ | |
1216 | basename = lbasename (fname); | |
1217 | strncpy (p->pr_fname, basename, sizeof (p->pr_fname)); | |
1218 | p->pr_fname[sizeof (p->pr_fname) - 1] = '\0'; | |
1219 | ||
1220 | infargs = get_inferior_args (); | |
1221 | ||
1222 | psargs = xstrdup (fname); | |
1223 | if (infargs != NULL) | |
1224 | psargs = reconcat (psargs, psargs, " ", infargs, NULL); | |
1225 | ||
1226 | make_cleanup (xfree, psargs); | |
1227 | ||
1228 | strncpy (p->pr_psargs, psargs, sizeof (p->pr_psargs)); | |
1229 | p->pr_psargs[sizeof (p->pr_psargs) - 1] = '\0'; | |
1230 | ||
1231 | xsnprintf (filename, sizeof (filename), "/proc/%d/stat", (int) pid); | |
1232 | proc_stat = target_fileio_read_stralloc (filename); | |
1233 | make_cleanup (xfree, proc_stat); | |
1234 | ||
1235 | if (proc_stat == NULL || *proc_stat == '\0') | |
1236 | { | |
1237 | /* Despite being unable to read more information about the | |
1238 | process, we return 1 here because at least we have its | |
1239 | command line, PID and arguments. */ | |
1240 | do_cleanups (c); | |
1241 | return 1; | |
1242 | } | |
1243 | ||
1244 | /* Ok, we have the stats. It's time to do a little parsing of the | |
1245 | contents of the buffer, so that we end up reading what we want. | |
1246 | ||
1247 | The following parsing mechanism is strongly based on the | |
1248 | information generated by the `fs/proc/array.c' file, present in | |
1249 | the Linux kernel tree. More details about how the information is | |
1250 | displayed can be obtained by seeing the manpage of proc(5), | |
1251 | specifically under the entry of `/proc/[pid]/stat'. */ | |
1252 | ||
1253 | /* Getting rid of the PID, since we already have it. */ | |
1254 | while (isdigit (*proc_stat)) | |
1255 | ++proc_stat; | |
1256 | ||
1257 | proc_stat = skip_spaces (proc_stat); | |
1258 | ||
1259 | /* Getting rid of the executable name, since we already have it. We | |
1260 | know that this name will be in parentheses, so we can safely look | |
1261 | for the close-paren. */ | |
1262 | while (*proc_stat != ')') | |
1263 | ++proc_stat; | |
1264 | ++proc_stat; | |
1265 | ||
1266 | proc_stat = skip_spaces (proc_stat); | |
1267 | ||
1268 | n_fields = sscanf (proc_stat, | |
1269 | "%c" /* Process state. */ | |
1270 | "%d%d%d" /* Parent PID, group ID, session ID. */ | |
1271 | "%*d%*d" /* tty_nr, tpgid (not used). */ | |
1272 | "%u" /* Flags. */ | |
1273 | "%*s%*s%*s%*s" /* minflt, cminflt, majflt, | |
1274 | cmajflt (not used). */ | |
1275 | "%*s%*s%*s%*s" /* utime, stime, cutime, | |
1276 | cstime (not used). */ | |
1277 | "%*s" /* Priority (not used). */ | |
1278 | "%ld", /* Nice. */ | |
1279 | &pr_sname, | |
1280 | &p->pr_ppid, &p->pr_pgrp, &p->pr_sid, | |
1281 | &pr_flag, | |
1282 | &pr_nice); | |
1283 | ||
1284 | if (n_fields != 6) | |
1285 | { | |
1286 | /* Again, we couldn't read the complementary information about | |
1287 | the process state. However, we already have minimal | |
1288 | information, so we just return 1 here. */ | |
1289 | do_cleanups (c); | |
1290 | return 1; | |
1291 | } | |
1292 | ||
1293 | /* Filling the structure fields. */ | |
1294 | prog_state = strchr (valid_states, pr_sname); | |
1295 | if (prog_state != NULL) | |
1296 | p->pr_state = prog_state - valid_states; | |
1297 | else | |
1298 | { | |
1299 | /* Zero means "Running". */ | |
1300 | p->pr_state = 0; | |
1301 | } | |
1302 | ||
1303 | p->pr_sname = p->pr_state > 5 ? '.' : pr_sname; | |
1304 | p->pr_zomb = p->pr_sname == 'Z'; | |
1305 | p->pr_nice = pr_nice; | |
1306 | p->pr_flag = pr_flag; | |
1307 | ||
1308 | /* Finally, obtaining the UID and GID. For that, we read and parse the | |
1309 | contents of the `/proc/PID/status' file. */ | |
1310 | xsnprintf (filename, sizeof (filename), "/proc/%d/status", (int) pid); | |
1311 | proc_status = target_fileio_read_stralloc (filename); | |
1312 | make_cleanup (xfree, proc_status); | |
1313 | ||
1314 | if (proc_status == NULL || *proc_status == '\0') | |
1315 | { | |
1316 | /* Returning 1 since we already have a bunch of information. */ | |
1317 | do_cleanups (c); | |
1318 | return 1; | |
1319 | } | |
1320 | ||
1321 | /* Extracting the UID. */ | |
1322 | tmpstr = strstr (proc_status, "Uid:"); | |
1323 | if (tmpstr != NULL) | |
1324 | { | |
1325 | /* Advancing the pointer to the beginning of the UID. */ | |
1326 | tmpstr += sizeof ("Uid:"); | |
1327 | while (*tmpstr != '\0' && !isdigit (*tmpstr)) | |
1328 | ++tmpstr; | |
1329 | ||
1330 | if (isdigit (*tmpstr)) | |
1331 | p->pr_uid = strtol (tmpstr, &tmpstr, 10); | |
1332 | } | |
1333 | ||
1334 | /* Extracting the GID. */ | |
1335 | tmpstr = strstr (proc_status, "Gid:"); | |
1336 | if (tmpstr != NULL) | |
1337 | { | |
1338 | /* Advancing the pointer to the beginning of the GID. */ | |
1339 | tmpstr += sizeof ("Gid:"); | |
1340 | while (*tmpstr != '\0' && !isdigit (*tmpstr)) | |
1341 | ++tmpstr; | |
1342 | ||
1343 | if (isdigit (*tmpstr)) | |
1344 | p->pr_gid = strtol (tmpstr, &tmpstr, 10); | |
1345 | } | |
1346 | ||
1347 | do_cleanups (c); | |
1348 | ||
1349 | return 1; | |
1350 | } | |
1351 | ||
6432734d UW |
1352 | /* Fills the "to_make_corefile_note" target vector. Builds the note |
1353 | section for a corefile, and returns it in a malloc buffer. */ | |
1354 | ||
1355 | char * | |
1356 | linux_make_corefile_notes (struct gdbarch *gdbarch, bfd *obfd, int *note_size, | |
1357 | linux_collect_thread_registers_ftype collect) | |
1358 | { | |
1359 | struct linux_corefile_thread_data thread_args; | |
b3ac9c77 | 1360 | struct elf_internal_linux_prpsinfo prpsinfo; |
6432734d UW |
1361 | char *note_data = NULL; |
1362 | gdb_byte *auxv; | |
1363 | int auxv_len; | |
1364 | ||
b3ac9c77 | 1365 | if (linux_fill_prpsinfo (&prpsinfo)) |
6432734d | 1366 | { |
b3ac9c77 SDJ |
1367 | if (gdbarch_elfcore_write_linux_prpsinfo_p (gdbarch)) |
1368 | { | |
1369 | note_data = gdbarch_elfcore_write_linux_prpsinfo (gdbarch, obfd, | |
1370 | note_data, note_size, | |
1371 | &prpsinfo); | |
1372 | } | |
1373 | else | |
1374 | { | |
1375 | if (gdbarch_ptr_bit (gdbarch) == 64) | |
1376 | note_data = elfcore_write_linux_prpsinfo64 (obfd, | |
1377 | note_data, note_size, | |
1378 | &prpsinfo); | |
1379 | else | |
1380 | note_data = elfcore_write_linux_prpsinfo32 (obfd, | |
1381 | note_data, note_size, | |
1382 | &prpsinfo); | |
1383 | } | |
6432734d UW |
1384 | } |
1385 | ||
1386 | /* Thread register information. */ | |
1387 | thread_args.gdbarch = gdbarch; | |
1388 | thread_args.pid = ptid_get_pid (inferior_ptid); | |
1389 | thread_args.obfd = obfd; | |
1390 | thread_args.note_data = note_data; | |
1391 | thread_args.note_size = note_size; | |
1392 | thread_args.num_notes = 0; | |
1393 | thread_args.stop_signal = find_stop_signal (); | |
1394 | thread_args.collect = collect; | |
1395 | iterate_over_threads (linux_corefile_thread_callback, &thread_args); | |
1396 | note_data = thread_args.note_data; | |
1397 | if (!note_data) | |
1398 | return NULL; | |
1399 | ||
1400 | /* Auxillary vector. */ | |
1401 | auxv_len = target_read_alloc (¤t_target, TARGET_OBJECT_AUXV, | |
1402 | NULL, &auxv); | |
1403 | if (auxv_len > 0) | |
1404 | { | |
1405 | note_data = elfcore_write_note (obfd, note_data, note_size, | |
1406 | "CORE", NT_AUXV, auxv, auxv_len); | |
1407 | xfree (auxv); | |
1408 | ||
1409 | if (!note_data) | |
1410 | return NULL; | |
1411 | } | |
1412 | ||
1413 | /* SPU information. */ | |
1414 | note_data = linux_spu_make_corefile_notes (obfd, note_data, note_size); | |
1415 | if (!note_data) | |
1416 | return NULL; | |
1417 | ||
451b7c33 TT |
1418 | /* File mappings. */ |
1419 | note_data = linux_make_mappings_corefile_notes (gdbarch, obfd, | |
1420 | note_data, note_size); | |
1421 | ||
6432734d UW |
1422 | make_cleanup (xfree, note_data); |
1423 | return note_data; | |
1424 | } | |
1425 | ||
1426 | static char * | |
1427 | linux_make_corefile_notes_1 (struct gdbarch *gdbarch, bfd *obfd, int *note_size) | |
1428 | { | |
1429 | /* FIXME: uweigand/2011-10-06: Once all GNU/Linux architectures have been | |
1430 | converted to gdbarch_core_regset_sections, we no longer need to fall back | |
1431 | to the target method at this point. */ | |
1432 | ||
1433 | if (!gdbarch_core_regset_sections (gdbarch)) | |
1434 | return target_make_corefile_notes (obfd, note_size); | |
1435 | else | |
1436 | return linux_make_corefile_notes (gdbarch, obfd, note_size, | |
1437 | linux_collect_thread_registers); | |
1438 | } | |
1439 | ||
a5ee0f0c PA |
1440 | /* To be called from the various GDB_OSABI_LINUX handlers for the |
1441 | various GNU/Linux architectures and machine types. */ | |
1442 | ||
1443 | void | |
1444 | linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |
1445 | { | |
1446 | set_gdbarch_core_pid_to_str (gdbarch, linux_core_pid_to_str); | |
3030c96e | 1447 | set_gdbarch_info_proc (gdbarch, linux_info_proc); |
451b7c33 | 1448 | set_gdbarch_core_info_proc (gdbarch, linux_core_info_proc); |
35c2fab7 | 1449 | set_gdbarch_find_memory_regions (gdbarch, linux_find_memory_regions); |
6432734d | 1450 | set_gdbarch_make_corefile_notes (gdbarch, linux_make_corefile_notes_1); |
33fbcbee PA |
1451 | set_gdbarch_has_shared_address_space (gdbarch, |
1452 | linux_has_shared_address_space); | |
a5ee0f0c | 1453 | } |
06253dd3 | 1454 | |
70221824 PA |
1455 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
1456 | extern initialize_file_ftype _initialize_linux_tdep; | |
1457 | ||
06253dd3 JK |
1458 | void |
1459 | _initialize_linux_tdep (void) | |
1460 | { | |
1461 | linux_gdbarch_data_handle = | |
1462 | gdbarch_data_register_post_init (init_linux_gdbarch_data); | |
1463 | } |