| 1 | /* Target-dependent code for GNU/Linux, architecture independent. |
| 2 | |
| 3 | Copyright (C) 2009-2012 Free Software Foundation, Inc. |
| 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" |
| 22 | #include "linux-tdep.h" |
| 23 | #include "auxv.h" |
| 24 | #include "target.h" |
| 25 | #include "gdbthread.h" |
| 26 | #include "gdbcore.h" |
| 27 | #include "regcache.h" |
| 28 | #include "regset.h" |
| 29 | #include "elf/common.h" |
| 30 | #include "elf-bfd.h" /* for elfcore_write_* */ |
| 31 | #include "inferior.h" |
| 32 | #include "cli/cli-utils.h" |
| 33 | |
| 34 | #include <ctype.h> |
| 35 | |
| 36 | static struct gdbarch_data *linux_gdbarch_data_handle; |
| 37 | |
| 38 | struct linux_gdbarch_data |
| 39 | { |
| 40 | struct type *siginfo_type; |
| 41 | }; |
| 42 | |
| 43 | static void * |
| 44 | init_linux_gdbarch_data (struct gdbarch *gdbarch) |
| 45 | { |
| 46 | return GDBARCH_OBSTACK_ZALLOC (gdbarch, struct linux_gdbarch_data); |
| 47 | } |
| 48 | |
| 49 | static struct linux_gdbarch_data * |
| 50 | get_linux_gdbarch_data (struct gdbarch *gdbarch) |
| 51 | { |
| 52 | return gdbarch_data (gdbarch, linux_gdbarch_data_handle); |
| 53 | } |
| 54 | |
| 55 | /* This function is suitable for architectures that don't |
| 56 | extend/override the standard siginfo structure. */ |
| 57 | |
| 58 | struct type * |
| 59 | linux_get_siginfo_type (struct gdbarch *gdbarch) |
| 60 | { |
| 61 | struct linux_gdbarch_data *linux_gdbarch_data; |
| 62 | struct type *int_type, *uint_type, *long_type, *void_ptr_type; |
| 63 | struct type *uid_type, *pid_type; |
| 64 | struct type *sigval_type, *clock_type; |
| 65 | struct type *siginfo_type, *sifields_type; |
| 66 | struct type *type; |
| 67 | |
| 68 | linux_gdbarch_data = get_linux_gdbarch_data (gdbarch); |
| 69 | if (linux_gdbarch_data->siginfo_type != NULL) |
| 70 | return linux_gdbarch_data->siginfo_type; |
| 71 | |
| 72 | int_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), |
| 73 | 0, "int"); |
| 74 | uint_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), |
| 75 | 1, "unsigned int"); |
| 76 | long_type = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), |
| 77 | 0, "long"); |
| 78 | void_ptr_type = lookup_pointer_type (builtin_type (gdbarch)->builtin_void); |
| 79 | |
| 80 | /* sival_t */ |
| 81 | sigval_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
| 82 | TYPE_NAME (sigval_type) = xstrdup ("sigval_t"); |
| 83 | append_composite_type_field (sigval_type, "sival_int", int_type); |
| 84 | append_composite_type_field (sigval_type, "sival_ptr", void_ptr_type); |
| 85 | |
| 86 | /* __pid_t */ |
| 87 | pid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, |
| 88 | TYPE_LENGTH (int_type), "__pid_t"); |
| 89 | TYPE_TARGET_TYPE (pid_type) = int_type; |
| 90 | TYPE_TARGET_STUB (pid_type) = 1; |
| 91 | |
| 92 | /* __uid_t */ |
| 93 | uid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, |
| 94 | TYPE_LENGTH (uint_type), "__uid_t"); |
| 95 | TYPE_TARGET_TYPE (uid_type) = uint_type; |
| 96 | TYPE_TARGET_STUB (uid_type) = 1; |
| 97 | |
| 98 | /* __clock_t */ |
| 99 | clock_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, |
| 100 | TYPE_LENGTH (long_type), "__clock_t"); |
| 101 | TYPE_TARGET_TYPE (clock_type) = long_type; |
| 102 | TYPE_TARGET_STUB (clock_type) = 1; |
| 103 | |
| 104 | /* _sifields */ |
| 105 | sifields_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
| 106 | |
| 107 | { |
| 108 | const int si_max_size = 128; |
| 109 | int si_pad_size; |
| 110 | int size_of_int = gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT; |
| 111 | |
| 112 | /* _pad */ |
| 113 | if (gdbarch_ptr_bit (gdbarch) == 64) |
| 114 | si_pad_size = (si_max_size / size_of_int) - 4; |
| 115 | else |
| 116 | si_pad_size = (si_max_size / size_of_int) - 3; |
| 117 | append_composite_type_field (sifields_type, "_pad", |
| 118 | init_vector_type (int_type, si_pad_size)); |
| 119 | } |
| 120 | |
| 121 | /* _kill */ |
| 122 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
| 123 | append_composite_type_field (type, "si_pid", pid_type); |
| 124 | append_composite_type_field (type, "si_uid", uid_type); |
| 125 | append_composite_type_field (sifields_type, "_kill", type); |
| 126 | |
| 127 | /* _timer */ |
| 128 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
| 129 | append_composite_type_field (type, "si_tid", int_type); |
| 130 | append_composite_type_field (type, "si_overrun", int_type); |
| 131 | append_composite_type_field (type, "si_sigval", sigval_type); |
| 132 | append_composite_type_field (sifields_type, "_timer", type); |
| 133 | |
| 134 | /* _rt */ |
| 135 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
| 136 | append_composite_type_field (type, "si_pid", pid_type); |
| 137 | append_composite_type_field (type, "si_uid", uid_type); |
| 138 | append_composite_type_field (type, "si_sigval", sigval_type); |
| 139 | append_composite_type_field (sifields_type, "_rt", type); |
| 140 | |
| 141 | /* _sigchld */ |
| 142 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
| 143 | append_composite_type_field (type, "si_pid", pid_type); |
| 144 | append_composite_type_field (type, "si_uid", uid_type); |
| 145 | append_composite_type_field (type, "si_status", int_type); |
| 146 | append_composite_type_field (type, "si_utime", clock_type); |
| 147 | append_composite_type_field (type, "si_stime", clock_type); |
| 148 | append_composite_type_field (sifields_type, "_sigchld", type); |
| 149 | |
| 150 | /* _sigfault */ |
| 151 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
| 152 | append_composite_type_field (type, "si_addr", void_ptr_type); |
| 153 | append_composite_type_field (sifields_type, "_sigfault", type); |
| 154 | |
| 155 | /* _sigpoll */ |
| 156 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
| 157 | append_composite_type_field (type, "si_band", long_type); |
| 158 | append_composite_type_field (type, "si_fd", int_type); |
| 159 | append_composite_type_field (sifields_type, "_sigpoll", type); |
| 160 | |
| 161 | /* struct siginfo */ |
| 162 | siginfo_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
| 163 | TYPE_NAME (siginfo_type) = xstrdup ("siginfo"); |
| 164 | append_composite_type_field (siginfo_type, "si_signo", int_type); |
| 165 | append_composite_type_field (siginfo_type, "si_errno", int_type); |
| 166 | append_composite_type_field (siginfo_type, "si_code", int_type); |
| 167 | append_composite_type_field_aligned (siginfo_type, |
| 168 | "_sifields", sifields_type, |
| 169 | TYPE_LENGTH (long_type)); |
| 170 | |
| 171 | linux_gdbarch_data->siginfo_type = siginfo_type; |
| 172 | |
| 173 | return siginfo_type; |
| 174 | } |
| 175 | |
| 176 | static int |
| 177 | linux_has_shared_address_space (struct gdbarch *gdbarch) |
| 178 | { |
| 179 | /* Determine whether we are running on uClinux or normal Linux |
| 180 | kernel. */ |
| 181 | CORE_ADDR dummy; |
| 182 | int target_is_uclinux; |
| 183 | |
| 184 | target_is_uclinux |
| 185 | = (target_auxv_search (¤t_target, AT_NULL, &dummy) > 0 |
| 186 | && target_auxv_search (¤t_target, AT_PAGESZ, &dummy) == 0); |
| 187 | |
| 188 | return target_is_uclinux; |
| 189 | } |
| 190 | |
| 191 | /* This is how we want PTIDs from core files to be printed. */ |
| 192 | |
| 193 | static char * |
| 194 | linux_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid) |
| 195 | { |
| 196 | static char buf[80]; |
| 197 | |
| 198 | if (ptid_get_lwp (ptid) != 0) |
| 199 | { |
| 200 | snprintf (buf, sizeof (buf), "LWP %ld", ptid_get_lwp (ptid)); |
| 201 | return buf; |
| 202 | } |
| 203 | |
| 204 | return normal_pid_to_str (ptid); |
| 205 | } |
| 206 | |
| 207 | /* Service function for corefiles and info proc. */ |
| 208 | |
| 209 | static void |
| 210 | read_mapping (const char *line, |
| 211 | ULONGEST *addr, ULONGEST *endaddr, |
| 212 | const char **permissions, size_t *permissions_len, |
| 213 | ULONGEST *offset, |
| 214 | const char **device, size_t *device_len, |
| 215 | ULONGEST *inode, |
| 216 | const char **filename) |
| 217 | { |
| 218 | const char *p = line; |
| 219 | |
| 220 | *addr = strtoulst (p, &p, 16); |
| 221 | if (*p == '-') |
| 222 | p++; |
| 223 | *endaddr = strtoulst (p, &p, 16); |
| 224 | |
| 225 | while (*p && isspace (*p)) |
| 226 | p++; |
| 227 | *permissions = p; |
| 228 | while (*p && !isspace (*p)) |
| 229 | p++; |
| 230 | *permissions_len = p - *permissions; |
| 231 | |
| 232 | *offset = strtoulst (p, &p, 16); |
| 233 | |
| 234 | while (*p && isspace (*p)) |
| 235 | p++; |
| 236 | *device = p; |
| 237 | while (*p && !isspace (*p)) |
| 238 | p++; |
| 239 | *device_len = p - *device; |
| 240 | |
| 241 | *inode = strtoulst (p, &p, 10); |
| 242 | |
| 243 | while (*p && isspace (*p)) |
| 244 | p++; |
| 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; |
| 405 | |
| 406 | printf_filtered (_("Process: %s\n"), |
| 407 | pulongest (strtoulst (p, &p, 10))); |
| 408 | |
| 409 | while (*p && isspace (*p)) |
| 410 | p++; |
| 411 | if (*p == '(') |
| 412 | { |
| 413 | const char *ep = strchr (p, ')'); |
| 414 | if (ep != NULL) |
| 415 | { |
| 416 | printf_filtered ("Exec file: %.*s\n", |
| 417 | (int) (ep - p - 1), p + 1); |
| 418 | p = ep + 1; |
| 419 | } |
| 420 | } |
| 421 | |
| 422 | while (*p && isspace (*p)) |
| 423 | p++; |
| 424 | if (*p) |
| 425 | printf_filtered (_("State: %c\n"), *p++); |
| 426 | |
| 427 | if (*p) |
| 428 | printf_filtered (_("Parent process: %s\n"), |
| 429 | pulongest (strtoulst (p, &p, 10))); |
| 430 | if (*p) |
| 431 | printf_filtered (_("Process group: %s\n"), |
| 432 | pulongest (strtoulst (p, &p, 10))); |
| 433 | if (*p) |
| 434 | printf_filtered (_("Session id: %s\n"), |
| 435 | pulongest (strtoulst (p, &p, 10))); |
| 436 | if (*p) |
| 437 | printf_filtered (_("TTY: %s\n"), |
| 438 | pulongest (strtoulst (p, &p, 10))); |
| 439 | if (*p) |
| 440 | printf_filtered (_("TTY owner process group: %s\n"), |
| 441 | pulongest (strtoulst (p, &p, 10))); |
| 442 | |
| 443 | if (*p) |
| 444 | printf_filtered (_("Flags: %s\n"), |
| 445 | hex_string (strtoulst (p, &p, 10))); |
| 446 | if (*p) |
| 447 | printf_filtered (_("Minor faults (no memory page): %s\n"), |
| 448 | pulongest (strtoulst (p, &p, 10))); |
| 449 | if (*p) |
| 450 | printf_filtered (_("Minor faults, children: %s\n"), |
| 451 | pulongest (strtoulst (p, &p, 10))); |
| 452 | if (*p) |
| 453 | printf_filtered (_("Major faults (memory page faults): %s\n"), |
| 454 | pulongest (strtoulst (p, &p, 10))); |
| 455 | if (*p) |
| 456 | printf_filtered (_("Major faults, children: %s\n"), |
| 457 | pulongest (strtoulst (p, &p, 10))); |
| 458 | if (*p) |
| 459 | printf_filtered (_("utime: %s\n"), |
| 460 | pulongest (strtoulst (p, &p, 10))); |
| 461 | if (*p) |
| 462 | printf_filtered (_("stime: %s\n"), |
| 463 | pulongest (strtoulst (p, &p, 10))); |
| 464 | if (*p) |
| 465 | printf_filtered (_("utime, children: %s\n"), |
| 466 | pulongest (strtoulst (p, &p, 10))); |
| 467 | if (*p) |
| 468 | printf_filtered (_("stime, children: %s\n"), |
| 469 | pulongest (strtoulst (p, &p, 10))); |
| 470 | if (*p) |
| 471 | printf_filtered (_("jiffies remaining in current " |
| 472 | "time slice: %s\n"), |
| 473 | pulongest (strtoulst (p, &p, 10))); |
| 474 | if (*p) |
| 475 | printf_filtered (_("'nice' value: %s\n"), |
| 476 | pulongest (strtoulst (p, &p, 10))); |
| 477 | if (*p) |
| 478 | printf_filtered (_("jiffies until next timeout: %s\n"), |
| 479 | pulongest (strtoulst (p, &p, 10))); |
| 480 | if (*p) |
| 481 | printf_filtered (_("jiffies until next SIGALRM: %s\n"), |
| 482 | pulongest (strtoulst (p, &p, 10))); |
| 483 | if (*p) |
| 484 | printf_filtered (_("start time (jiffies since " |
| 485 | "system boot): %s\n"), |
| 486 | pulongest (strtoulst (p, &p, 10))); |
| 487 | if (*p) |
| 488 | printf_filtered (_("Virtual memory size: %s\n"), |
| 489 | pulongest (strtoulst (p, &p, 10))); |
| 490 | if (*p) |
| 491 | printf_filtered (_("Resident set size: %s\n"), |
| 492 | pulongest (strtoulst (p, &p, 10))); |
| 493 | if (*p) |
| 494 | printf_filtered (_("rlim: %s\n"), |
| 495 | pulongest (strtoulst (p, &p, 10))); |
| 496 | if (*p) |
| 497 | printf_filtered (_("Start of text: %s\n"), |
| 498 | hex_string (strtoulst (p, &p, 10))); |
| 499 | if (*p) |
| 500 | printf_filtered (_("End of text: %s\n"), |
| 501 | hex_string (strtoulst (p, &p, 10))); |
| 502 | if (*p) |
| 503 | printf_filtered (_("Start of stack: %s\n"), |
| 504 | hex_string (strtoulst (p, &p, 10))); |
| 505 | #if 0 /* Don't know how architecture-dependent the rest is... |
| 506 | Anyway the signal bitmap info is available from "status". */ |
| 507 | if (*p) |
| 508 | printf_filtered (_("Kernel stack pointer: %s\n"), |
| 509 | hex_string (strtoulst (p, &p, 10))); |
| 510 | if (*p) |
| 511 | printf_filtered (_("Kernel instr pointer: %s\n"), |
| 512 | hex_string (strtoulst (p, &p, 10))); |
| 513 | if (*p) |
| 514 | printf_filtered (_("Pending signals bitmap: %s\n"), |
| 515 | hex_string (strtoulst (p, &p, 10))); |
| 516 | if (*p) |
| 517 | printf_filtered (_("Blocked signals bitmap: %s\n"), |
| 518 | hex_string (strtoulst (p, &p, 10))); |
| 519 | if (*p) |
| 520 | printf_filtered (_("Ignored signals bitmap: %s\n"), |
| 521 | hex_string (strtoulst (p, &p, 10))); |
| 522 | if (*p) |
| 523 | printf_filtered (_("Catched signals bitmap: %s\n"), |
| 524 | hex_string (strtoulst (p, &p, 10))); |
| 525 | if (*p) |
| 526 | printf_filtered (_("wchan (system call): %s\n"), |
| 527 | hex_string (strtoulst (p, &p, 10))); |
| 528 | #endif |
| 529 | do_cleanups (cleanup); |
| 530 | } |
| 531 | else |
| 532 | warning (_("unable to open /proc file '%s'"), filename); |
| 533 | } |
| 534 | } |
| 535 | |
| 536 | /* List memory regions in the inferior for a corefile. */ |
| 537 | |
| 538 | static int |
| 539 | linux_find_memory_regions (struct gdbarch *gdbarch, |
| 540 | find_memory_region_ftype func, void *obfd) |
| 541 | { |
| 542 | char filename[100]; |
| 543 | gdb_byte *data; |
| 544 | |
| 545 | /* We need to know the real target PID to access /proc. */ |
| 546 | if (current_inferior ()->fake_pid_p) |
| 547 | return 1; |
| 548 | |
| 549 | xsnprintf (filename, sizeof filename, |
| 550 | "/proc/%d/maps", current_inferior ()->pid); |
| 551 | data = target_fileio_read_stralloc (filename); |
| 552 | if (data) |
| 553 | { |
| 554 | struct cleanup *cleanup = make_cleanup (xfree, data); |
| 555 | char *line; |
| 556 | |
| 557 | for (line = strtok (data, "\n"); line; line = strtok (NULL, "\n")) |
| 558 | { |
| 559 | ULONGEST addr, endaddr, offset, inode; |
| 560 | const char *permissions, *device, *filename; |
| 561 | size_t permissions_len, device_len; |
| 562 | int read, write, exec; |
| 563 | |
| 564 | read_mapping (line, &addr, &endaddr, &permissions, &permissions_len, |
| 565 | &offset, &device, &device_len, &inode, &filename); |
| 566 | |
| 567 | /* Decode permissions. */ |
| 568 | read = (memchr (permissions, 'r', permissions_len) != 0); |
| 569 | write = (memchr (permissions, 'w', permissions_len) != 0); |
| 570 | exec = (memchr (permissions, 'x', permissions_len) != 0); |
| 571 | |
| 572 | /* Invoke the callback function to create the corefile segment. */ |
| 573 | func (addr, endaddr - addr, read, write, exec, obfd); |
| 574 | } |
| 575 | |
| 576 | do_cleanups (cleanup); |
| 577 | return 0; |
| 578 | } |
| 579 | |
| 580 | return 1; |
| 581 | } |
| 582 | |
| 583 | /* Determine which signal stopped execution. */ |
| 584 | |
| 585 | static int |
| 586 | find_signalled_thread (struct thread_info *info, void *data) |
| 587 | { |
| 588 | if (info->suspend.stop_signal != GDB_SIGNAL_0 |
| 589 | && ptid_get_pid (info->ptid) == ptid_get_pid (inferior_ptid)) |
| 590 | return 1; |
| 591 | |
| 592 | return 0; |
| 593 | } |
| 594 | |
| 595 | static enum gdb_signal |
| 596 | find_stop_signal (void) |
| 597 | { |
| 598 | struct thread_info *info = |
| 599 | iterate_over_threads (find_signalled_thread, NULL); |
| 600 | |
| 601 | if (info) |
| 602 | return info->suspend.stop_signal; |
| 603 | else |
| 604 | return GDB_SIGNAL_0; |
| 605 | } |
| 606 | |
| 607 | /* Generate corefile notes for SPU contexts. */ |
| 608 | |
| 609 | static char * |
| 610 | linux_spu_make_corefile_notes (bfd *obfd, char *note_data, int *note_size) |
| 611 | { |
| 612 | static const char *spu_files[] = |
| 613 | { |
| 614 | "object-id", |
| 615 | "mem", |
| 616 | "regs", |
| 617 | "fpcr", |
| 618 | "lslr", |
| 619 | "decr", |
| 620 | "decr_status", |
| 621 | "signal1", |
| 622 | "signal1_type", |
| 623 | "signal2", |
| 624 | "signal2_type", |
| 625 | "event_mask", |
| 626 | "event_status", |
| 627 | "mbox_info", |
| 628 | "ibox_info", |
| 629 | "wbox_info", |
| 630 | "dma_info", |
| 631 | "proxydma_info", |
| 632 | }; |
| 633 | |
| 634 | enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch); |
| 635 | gdb_byte *spu_ids; |
| 636 | LONGEST i, j, size; |
| 637 | |
| 638 | /* Determine list of SPU ids. */ |
| 639 | size = target_read_alloc (¤t_target, TARGET_OBJECT_SPU, |
| 640 | NULL, &spu_ids); |
| 641 | |
| 642 | /* Generate corefile notes for each SPU file. */ |
| 643 | for (i = 0; i < size; i += 4) |
| 644 | { |
| 645 | int fd = extract_unsigned_integer (spu_ids + i, 4, byte_order); |
| 646 | |
| 647 | for (j = 0; j < sizeof (spu_files) / sizeof (spu_files[0]); j++) |
| 648 | { |
| 649 | char annex[32], note_name[32]; |
| 650 | gdb_byte *spu_data; |
| 651 | LONGEST spu_len; |
| 652 | |
| 653 | xsnprintf (annex, sizeof annex, "%d/%s", fd, spu_files[j]); |
| 654 | spu_len = target_read_alloc (¤t_target, TARGET_OBJECT_SPU, |
| 655 | annex, &spu_data); |
| 656 | if (spu_len > 0) |
| 657 | { |
| 658 | xsnprintf (note_name, sizeof note_name, "SPU/%s", annex); |
| 659 | note_data = elfcore_write_note (obfd, note_data, note_size, |
| 660 | note_name, NT_SPU, |
| 661 | spu_data, spu_len); |
| 662 | xfree (spu_data); |
| 663 | |
| 664 | if (!note_data) |
| 665 | { |
| 666 | xfree (spu_ids); |
| 667 | return NULL; |
| 668 | } |
| 669 | } |
| 670 | } |
| 671 | } |
| 672 | |
| 673 | if (size > 0) |
| 674 | xfree (spu_ids); |
| 675 | |
| 676 | return note_data; |
| 677 | } |
| 678 | |
| 679 | /* Records the thread's register state for the corefile note |
| 680 | section. */ |
| 681 | |
| 682 | static char * |
| 683 | linux_collect_thread_registers (const struct regcache *regcache, |
| 684 | ptid_t ptid, bfd *obfd, |
| 685 | char *note_data, int *note_size, |
| 686 | enum gdb_signal stop_signal) |
| 687 | { |
| 688 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
| 689 | struct core_regset_section *sect_list; |
| 690 | unsigned long lwp; |
| 691 | |
| 692 | sect_list = gdbarch_core_regset_sections (gdbarch); |
| 693 | gdb_assert (sect_list); |
| 694 | |
| 695 | /* For remote targets the LWP may not be available, so use the TID. */ |
| 696 | lwp = ptid_get_lwp (ptid); |
| 697 | if (!lwp) |
| 698 | lwp = ptid_get_tid (ptid); |
| 699 | |
| 700 | while (sect_list->sect_name != NULL) |
| 701 | { |
| 702 | const struct regset *regset; |
| 703 | char *buf; |
| 704 | |
| 705 | regset = gdbarch_regset_from_core_section (gdbarch, |
| 706 | sect_list->sect_name, |
| 707 | sect_list->size); |
| 708 | gdb_assert (regset && regset->collect_regset); |
| 709 | |
| 710 | buf = xmalloc (sect_list->size); |
| 711 | regset->collect_regset (regset, regcache, -1, buf, sect_list->size); |
| 712 | |
| 713 | /* PRSTATUS still needs to be treated specially. */ |
| 714 | if (strcmp (sect_list->sect_name, ".reg") == 0) |
| 715 | note_data = (char *) elfcore_write_prstatus |
| 716 | (obfd, note_data, note_size, lwp, |
| 717 | gdb_signal_to_host (stop_signal), buf); |
| 718 | else |
| 719 | note_data = (char *) elfcore_write_register_note |
| 720 | (obfd, note_data, note_size, |
| 721 | sect_list->sect_name, buf, sect_list->size); |
| 722 | xfree (buf); |
| 723 | sect_list++; |
| 724 | |
| 725 | if (!note_data) |
| 726 | return NULL; |
| 727 | } |
| 728 | |
| 729 | return note_data; |
| 730 | } |
| 731 | |
| 732 | struct linux_corefile_thread_data |
| 733 | { |
| 734 | struct gdbarch *gdbarch; |
| 735 | int pid; |
| 736 | bfd *obfd; |
| 737 | char *note_data; |
| 738 | int *note_size; |
| 739 | int num_notes; |
| 740 | enum gdb_signal stop_signal; |
| 741 | linux_collect_thread_registers_ftype collect; |
| 742 | }; |
| 743 | |
| 744 | /* Called by gdbthread.c once per thread. Records the thread's |
| 745 | register state for the corefile note section. */ |
| 746 | |
| 747 | static int |
| 748 | linux_corefile_thread_callback (struct thread_info *info, void *data) |
| 749 | { |
| 750 | struct linux_corefile_thread_data *args = data; |
| 751 | |
| 752 | if (ptid_get_pid (info->ptid) == args->pid) |
| 753 | { |
| 754 | struct cleanup *old_chain; |
| 755 | struct regcache *regcache; |
| 756 | regcache = get_thread_arch_regcache (info->ptid, args->gdbarch); |
| 757 | |
| 758 | old_chain = save_inferior_ptid (); |
| 759 | inferior_ptid = info->ptid; |
| 760 | target_fetch_registers (regcache, -1); |
| 761 | do_cleanups (old_chain); |
| 762 | |
| 763 | args->note_data = args->collect (regcache, info->ptid, args->obfd, |
| 764 | args->note_data, args->note_size, |
| 765 | args->stop_signal); |
| 766 | args->num_notes++; |
| 767 | } |
| 768 | |
| 769 | return !args->note_data; |
| 770 | } |
| 771 | |
| 772 | /* Fills the "to_make_corefile_note" target vector. Builds the note |
| 773 | section for a corefile, and returns it in a malloc buffer. */ |
| 774 | |
| 775 | char * |
| 776 | linux_make_corefile_notes (struct gdbarch *gdbarch, bfd *obfd, int *note_size, |
| 777 | linux_collect_thread_registers_ftype collect) |
| 778 | { |
| 779 | struct linux_corefile_thread_data thread_args; |
| 780 | char *note_data = NULL; |
| 781 | gdb_byte *auxv; |
| 782 | int auxv_len; |
| 783 | |
| 784 | /* Process information. */ |
| 785 | if (get_exec_file (0)) |
| 786 | { |
| 787 | const char *fname = lbasename (get_exec_file (0)); |
| 788 | char *psargs = xstrdup (fname); |
| 789 | |
| 790 | if (get_inferior_args ()) |
| 791 | psargs = reconcat (psargs, psargs, " ", get_inferior_args (), |
| 792 | (char *) NULL); |
| 793 | |
| 794 | note_data = elfcore_write_prpsinfo (obfd, note_data, note_size, |
| 795 | fname, psargs); |
| 796 | xfree (psargs); |
| 797 | |
| 798 | if (!note_data) |
| 799 | return NULL; |
| 800 | } |
| 801 | |
| 802 | /* Thread register information. */ |
| 803 | thread_args.gdbarch = gdbarch; |
| 804 | thread_args.pid = ptid_get_pid (inferior_ptid); |
| 805 | thread_args.obfd = obfd; |
| 806 | thread_args.note_data = note_data; |
| 807 | thread_args.note_size = note_size; |
| 808 | thread_args.num_notes = 0; |
| 809 | thread_args.stop_signal = find_stop_signal (); |
| 810 | thread_args.collect = collect; |
| 811 | iterate_over_threads (linux_corefile_thread_callback, &thread_args); |
| 812 | note_data = thread_args.note_data; |
| 813 | if (!note_data) |
| 814 | return NULL; |
| 815 | |
| 816 | /* Auxillary vector. */ |
| 817 | auxv_len = target_read_alloc (¤t_target, TARGET_OBJECT_AUXV, |
| 818 | NULL, &auxv); |
| 819 | if (auxv_len > 0) |
| 820 | { |
| 821 | note_data = elfcore_write_note (obfd, note_data, note_size, |
| 822 | "CORE", NT_AUXV, auxv, auxv_len); |
| 823 | xfree (auxv); |
| 824 | |
| 825 | if (!note_data) |
| 826 | return NULL; |
| 827 | } |
| 828 | |
| 829 | /* SPU information. */ |
| 830 | note_data = linux_spu_make_corefile_notes (obfd, note_data, note_size); |
| 831 | if (!note_data) |
| 832 | return NULL; |
| 833 | |
| 834 | make_cleanup (xfree, note_data); |
| 835 | return note_data; |
| 836 | } |
| 837 | |
| 838 | static char * |
| 839 | linux_make_corefile_notes_1 (struct gdbarch *gdbarch, bfd *obfd, int *note_size) |
| 840 | { |
| 841 | /* FIXME: uweigand/2011-10-06: Once all GNU/Linux architectures have been |
| 842 | converted to gdbarch_core_regset_sections, we no longer need to fall back |
| 843 | to the target method at this point. */ |
| 844 | |
| 845 | if (!gdbarch_core_regset_sections (gdbarch)) |
| 846 | return target_make_corefile_notes (obfd, note_size); |
| 847 | else |
| 848 | return linux_make_corefile_notes (gdbarch, obfd, note_size, |
| 849 | linux_collect_thread_registers); |
| 850 | } |
| 851 | |
| 852 | /* To be called from the various GDB_OSABI_LINUX handlers for the |
| 853 | various GNU/Linux architectures and machine types. */ |
| 854 | |
| 855 | void |
| 856 | linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) |
| 857 | { |
| 858 | set_gdbarch_core_pid_to_str (gdbarch, linux_core_pid_to_str); |
| 859 | set_gdbarch_info_proc (gdbarch, linux_info_proc); |
| 860 | set_gdbarch_find_memory_regions (gdbarch, linux_find_memory_regions); |
| 861 | set_gdbarch_make_corefile_notes (gdbarch, linux_make_corefile_notes_1); |
| 862 | set_gdbarch_has_shared_address_space (gdbarch, |
| 863 | linux_has_shared_address_space); |
| 864 | } |
| 865 | |
| 866 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
| 867 | extern initialize_file_ftype _initialize_linux_tdep; |
| 868 | |
| 869 | void |
| 870 | _initialize_linux_tdep (void) |
| 871 | { |
| 872 | linux_gdbarch_data_handle = |
| 873 | gdbarch_data_register_post_init (init_linux_gdbarch_data); |
| 874 | } |