| 1 | /* Target-dependent code for GNU/Linux, architecture independent. |
| 2 | |
| 3 | Copyright (C) 2009-2014 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 | #include "arch-utils.h" |
| 34 | #include "gdb_obstack.h" |
| 35 | |
| 36 | #include <ctype.h> |
| 37 | |
| 38 | /* This enum represents the signals' numbers on a generic architecture |
| 39 | running the Linux kernel. The definition of "generic" comes from |
| 40 | the file <include/uapi/asm-generic/signal.h>, from the Linux kernel |
| 41 | tree, which is the "de facto" implementation of signal numbers to |
| 42 | be used by new architecture ports. |
| 43 | |
| 44 | For those architectures which have differences between the generic |
| 45 | standard (e.g., Alpha), we define the different signals (and *only* |
| 46 | those) in the specific target-dependent file (e.g., |
| 47 | alpha-linux-tdep.c, for Alpha). Please refer to the architecture's |
| 48 | tdep file for more information. |
| 49 | |
| 50 | ARM deserves a special mention here. On the file |
| 51 | <arch/arm/include/uapi/asm/signal.h>, it defines only one different |
| 52 | (and ARM-only) signal, which is SIGSWI, with the same number as |
| 53 | SIGRTMIN. This signal is used only for a very specific target, |
| 54 | called ArthurOS (from RISCOS). Therefore, we do not handle it on |
| 55 | the ARM-tdep file, and we can safely use the generic signal handler |
| 56 | here for ARM targets. |
| 57 | |
| 58 | As stated above, this enum is derived from |
| 59 | <include/uapi/asm-generic/signal.h>, from the Linux kernel |
| 60 | tree. */ |
| 61 | |
| 62 | enum |
| 63 | { |
| 64 | LINUX_SIGHUP = 1, |
| 65 | LINUX_SIGINT = 2, |
| 66 | LINUX_SIGQUIT = 3, |
| 67 | LINUX_SIGILL = 4, |
| 68 | LINUX_SIGTRAP = 5, |
| 69 | LINUX_SIGABRT = 6, |
| 70 | LINUX_SIGIOT = 6, |
| 71 | LINUX_SIGBUS = 7, |
| 72 | LINUX_SIGFPE = 8, |
| 73 | LINUX_SIGKILL = 9, |
| 74 | LINUX_SIGUSR1 = 10, |
| 75 | LINUX_SIGSEGV = 11, |
| 76 | LINUX_SIGUSR2 = 12, |
| 77 | LINUX_SIGPIPE = 13, |
| 78 | LINUX_SIGALRM = 14, |
| 79 | LINUX_SIGTERM = 15, |
| 80 | LINUX_SIGSTKFLT = 16, |
| 81 | LINUX_SIGCHLD = 17, |
| 82 | LINUX_SIGCONT = 18, |
| 83 | LINUX_SIGSTOP = 19, |
| 84 | LINUX_SIGTSTP = 20, |
| 85 | LINUX_SIGTTIN = 21, |
| 86 | LINUX_SIGTTOU = 22, |
| 87 | LINUX_SIGURG = 23, |
| 88 | LINUX_SIGXCPU = 24, |
| 89 | LINUX_SIGXFSZ = 25, |
| 90 | LINUX_SIGVTALRM = 26, |
| 91 | LINUX_SIGPROF = 27, |
| 92 | LINUX_SIGWINCH = 28, |
| 93 | LINUX_SIGIO = 29, |
| 94 | LINUX_SIGPOLL = LINUX_SIGIO, |
| 95 | LINUX_SIGPWR = 30, |
| 96 | LINUX_SIGSYS = 31, |
| 97 | LINUX_SIGUNUSED = 31, |
| 98 | |
| 99 | LINUX_SIGRTMIN = 32, |
| 100 | LINUX_SIGRTMAX = 64, |
| 101 | }; |
| 102 | |
| 103 | static struct gdbarch_data *linux_gdbarch_data_handle; |
| 104 | |
| 105 | struct linux_gdbarch_data |
| 106 | { |
| 107 | struct type *siginfo_type; |
| 108 | }; |
| 109 | |
| 110 | static void * |
| 111 | init_linux_gdbarch_data (struct gdbarch *gdbarch) |
| 112 | { |
| 113 | return GDBARCH_OBSTACK_ZALLOC (gdbarch, struct linux_gdbarch_data); |
| 114 | } |
| 115 | |
| 116 | static struct linux_gdbarch_data * |
| 117 | get_linux_gdbarch_data (struct gdbarch *gdbarch) |
| 118 | { |
| 119 | return gdbarch_data (gdbarch, linux_gdbarch_data_handle); |
| 120 | } |
| 121 | |
| 122 | /* This function is suitable for architectures that don't |
| 123 | extend/override the standard siginfo structure. */ |
| 124 | |
| 125 | struct type * |
| 126 | linux_get_siginfo_type (struct gdbarch *gdbarch) |
| 127 | { |
| 128 | struct linux_gdbarch_data *linux_gdbarch_data; |
| 129 | struct type *int_type, *uint_type, *long_type, *void_ptr_type; |
| 130 | struct type *uid_type, *pid_type; |
| 131 | struct type *sigval_type, *clock_type; |
| 132 | struct type *siginfo_type, *sifields_type; |
| 133 | struct type *type; |
| 134 | |
| 135 | linux_gdbarch_data = get_linux_gdbarch_data (gdbarch); |
| 136 | if (linux_gdbarch_data->siginfo_type != NULL) |
| 137 | return linux_gdbarch_data->siginfo_type; |
| 138 | |
| 139 | int_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), |
| 140 | 0, "int"); |
| 141 | uint_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch), |
| 142 | 1, "unsigned int"); |
| 143 | long_type = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), |
| 144 | 0, "long"); |
| 145 | void_ptr_type = lookup_pointer_type (builtin_type (gdbarch)->builtin_void); |
| 146 | |
| 147 | /* sival_t */ |
| 148 | sigval_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
| 149 | TYPE_NAME (sigval_type) = xstrdup ("sigval_t"); |
| 150 | append_composite_type_field (sigval_type, "sival_int", int_type); |
| 151 | append_composite_type_field (sigval_type, "sival_ptr", void_ptr_type); |
| 152 | |
| 153 | /* __pid_t */ |
| 154 | pid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, |
| 155 | TYPE_LENGTH (int_type), "__pid_t"); |
| 156 | TYPE_TARGET_TYPE (pid_type) = int_type; |
| 157 | TYPE_TARGET_STUB (pid_type) = 1; |
| 158 | |
| 159 | /* __uid_t */ |
| 160 | uid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, |
| 161 | TYPE_LENGTH (uint_type), "__uid_t"); |
| 162 | TYPE_TARGET_TYPE (uid_type) = uint_type; |
| 163 | TYPE_TARGET_STUB (uid_type) = 1; |
| 164 | |
| 165 | /* __clock_t */ |
| 166 | clock_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, |
| 167 | TYPE_LENGTH (long_type), "__clock_t"); |
| 168 | TYPE_TARGET_TYPE (clock_type) = long_type; |
| 169 | TYPE_TARGET_STUB (clock_type) = 1; |
| 170 | |
| 171 | /* _sifields */ |
| 172 | sifields_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION); |
| 173 | |
| 174 | { |
| 175 | const int si_max_size = 128; |
| 176 | int si_pad_size; |
| 177 | int size_of_int = gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT; |
| 178 | |
| 179 | /* _pad */ |
| 180 | if (gdbarch_ptr_bit (gdbarch) == 64) |
| 181 | si_pad_size = (si_max_size / size_of_int) - 4; |
| 182 | else |
| 183 | si_pad_size = (si_max_size / size_of_int) - 3; |
| 184 | append_composite_type_field (sifields_type, "_pad", |
| 185 | init_vector_type (int_type, si_pad_size)); |
| 186 | } |
| 187 | |
| 188 | /* _kill */ |
| 189 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
| 190 | append_composite_type_field (type, "si_pid", pid_type); |
| 191 | append_composite_type_field (type, "si_uid", uid_type); |
| 192 | append_composite_type_field (sifields_type, "_kill", type); |
| 193 | |
| 194 | /* _timer */ |
| 195 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
| 196 | append_composite_type_field (type, "si_tid", int_type); |
| 197 | append_composite_type_field (type, "si_overrun", int_type); |
| 198 | append_composite_type_field (type, "si_sigval", sigval_type); |
| 199 | append_composite_type_field (sifields_type, "_timer", type); |
| 200 | |
| 201 | /* _rt */ |
| 202 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
| 203 | append_composite_type_field (type, "si_pid", pid_type); |
| 204 | append_composite_type_field (type, "si_uid", uid_type); |
| 205 | append_composite_type_field (type, "si_sigval", sigval_type); |
| 206 | append_composite_type_field (sifields_type, "_rt", type); |
| 207 | |
| 208 | /* _sigchld */ |
| 209 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
| 210 | append_composite_type_field (type, "si_pid", pid_type); |
| 211 | append_composite_type_field (type, "si_uid", uid_type); |
| 212 | append_composite_type_field (type, "si_status", int_type); |
| 213 | append_composite_type_field (type, "si_utime", clock_type); |
| 214 | append_composite_type_field (type, "si_stime", clock_type); |
| 215 | append_composite_type_field (sifields_type, "_sigchld", type); |
| 216 | |
| 217 | /* _sigfault */ |
| 218 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
| 219 | append_composite_type_field (type, "si_addr", void_ptr_type); |
| 220 | append_composite_type_field (sifields_type, "_sigfault", type); |
| 221 | |
| 222 | /* _sigpoll */ |
| 223 | type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
| 224 | append_composite_type_field (type, "si_band", long_type); |
| 225 | append_composite_type_field (type, "si_fd", int_type); |
| 226 | append_composite_type_field (sifields_type, "_sigpoll", type); |
| 227 | |
| 228 | /* struct siginfo */ |
| 229 | siginfo_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT); |
| 230 | TYPE_NAME (siginfo_type) = xstrdup ("siginfo"); |
| 231 | append_composite_type_field (siginfo_type, "si_signo", int_type); |
| 232 | append_composite_type_field (siginfo_type, "si_errno", int_type); |
| 233 | append_composite_type_field (siginfo_type, "si_code", int_type); |
| 234 | append_composite_type_field_aligned (siginfo_type, |
| 235 | "_sifields", sifields_type, |
| 236 | TYPE_LENGTH (long_type)); |
| 237 | |
| 238 | linux_gdbarch_data->siginfo_type = siginfo_type; |
| 239 | |
| 240 | return siginfo_type; |
| 241 | } |
| 242 | |
| 243 | /* Return true if the target is running on uClinux instead of normal |
| 244 | Linux kernel. */ |
| 245 | |
| 246 | int |
| 247 | linux_is_uclinux (void) |
| 248 | { |
| 249 | CORE_ADDR dummy; |
| 250 | |
| 251 | return (target_auxv_search (¤t_target, AT_NULL, &dummy) > 0 |
| 252 | && target_auxv_search (¤t_target, AT_PAGESZ, &dummy) == 0); |
| 253 | } |
| 254 | |
| 255 | static int |
| 256 | linux_has_shared_address_space (struct gdbarch *gdbarch) |
| 257 | { |
| 258 | return linux_is_uclinux (); |
| 259 | } |
| 260 | |
| 261 | /* This is how we want PTIDs from core files to be printed. */ |
| 262 | |
| 263 | static char * |
| 264 | linux_core_pid_to_str (struct gdbarch *gdbarch, ptid_t ptid) |
| 265 | { |
| 266 | static char buf[80]; |
| 267 | |
| 268 | if (ptid_get_lwp (ptid) != 0) |
| 269 | { |
| 270 | snprintf (buf, sizeof (buf), "LWP %ld", ptid_get_lwp (ptid)); |
| 271 | return buf; |
| 272 | } |
| 273 | |
| 274 | return normal_pid_to_str (ptid); |
| 275 | } |
| 276 | |
| 277 | /* Service function for corefiles and info proc. */ |
| 278 | |
| 279 | static void |
| 280 | read_mapping (const char *line, |
| 281 | ULONGEST *addr, ULONGEST *endaddr, |
| 282 | const char **permissions, size_t *permissions_len, |
| 283 | ULONGEST *offset, |
| 284 | const char **device, size_t *device_len, |
| 285 | ULONGEST *inode, |
| 286 | const char **filename) |
| 287 | { |
| 288 | const char *p = line; |
| 289 | |
| 290 | *addr = strtoulst (p, &p, 16); |
| 291 | if (*p == '-') |
| 292 | p++; |
| 293 | *endaddr = strtoulst (p, &p, 16); |
| 294 | |
| 295 | p = skip_spaces_const (p); |
| 296 | *permissions = p; |
| 297 | while (*p && !isspace (*p)) |
| 298 | p++; |
| 299 | *permissions_len = p - *permissions; |
| 300 | |
| 301 | *offset = strtoulst (p, &p, 16); |
| 302 | |
| 303 | p = skip_spaces_const (p); |
| 304 | *device = p; |
| 305 | while (*p && !isspace (*p)) |
| 306 | p++; |
| 307 | *device_len = p - *device; |
| 308 | |
| 309 | *inode = strtoulst (p, &p, 10); |
| 310 | |
| 311 | p = skip_spaces_const (p); |
| 312 | *filename = p; |
| 313 | } |
| 314 | |
| 315 | /* Implement the "info proc" command. */ |
| 316 | |
| 317 | static void |
| 318 | linux_info_proc (struct gdbarch *gdbarch, char *args, |
| 319 | enum info_proc_what what) |
| 320 | { |
| 321 | /* A long is used for pid instead of an int to avoid a loss of precision |
| 322 | compiler warning from the output of strtoul. */ |
| 323 | long pid; |
| 324 | int cmdline_f = (what == IP_MINIMAL || what == IP_CMDLINE || what == IP_ALL); |
| 325 | int cwd_f = (what == IP_MINIMAL || what == IP_CWD || what == IP_ALL); |
| 326 | int exe_f = (what == IP_MINIMAL || what == IP_EXE || what == IP_ALL); |
| 327 | int mappings_f = (what == IP_MAPPINGS || what == IP_ALL); |
| 328 | int status_f = (what == IP_STATUS || what == IP_ALL); |
| 329 | int stat_f = (what == IP_STAT || what == IP_ALL); |
| 330 | char filename[100]; |
| 331 | char *data; |
| 332 | int target_errno; |
| 333 | |
| 334 | if (args && isdigit (args[0])) |
| 335 | pid = strtoul (args, &args, 10); |
| 336 | else |
| 337 | { |
| 338 | if (!target_has_execution) |
| 339 | error (_("No current process: you must name one.")); |
| 340 | if (current_inferior ()->fake_pid_p) |
| 341 | error (_("Can't determine the current process's PID: you must name one.")); |
| 342 | |
| 343 | pid = current_inferior ()->pid; |
| 344 | } |
| 345 | |
| 346 | args = skip_spaces (args); |
| 347 | if (args && args[0]) |
| 348 | error (_("Too many parameters: %s"), args); |
| 349 | |
| 350 | printf_filtered (_("process %ld\n"), pid); |
| 351 | if (cmdline_f) |
| 352 | { |
| 353 | xsnprintf (filename, sizeof filename, "/proc/%ld/cmdline", pid); |
| 354 | data = target_fileio_read_stralloc (filename); |
| 355 | if (data) |
| 356 | { |
| 357 | struct cleanup *cleanup = make_cleanup (xfree, data); |
| 358 | printf_filtered ("cmdline = '%s'\n", data); |
| 359 | do_cleanups (cleanup); |
| 360 | } |
| 361 | else |
| 362 | warning (_("unable to open /proc file '%s'"), filename); |
| 363 | } |
| 364 | if (cwd_f) |
| 365 | { |
| 366 | xsnprintf (filename, sizeof filename, "/proc/%ld/cwd", pid); |
| 367 | data = target_fileio_readlink (filename, &target_errno); |
| 368 | if (data) |
| 369 | { |
| 370 | struct cleanup *cleanup = make_cleanup (xfree, data); |
| 371 | printf_filtered ("cwd = '%s'\n", data); |
| 372 | do_cleanups (cleanup); |
| 373 | } |
| 374 | else |
| 375 | warning (_("unable to read link '%s'"), filename); |
| 376 | } |
| 377 | if (exe_f) |
| 378 | { |
| 379 | xsnprintf (filename, sizeof filename, "/proc/%ld/exe", pid); |
| 380 | data = target_fileio_readlink (filename, &target_errno); |
| 381 | if (data) |
| 382 | { |
| 383 | struct cleanup *cleanup = make_cleanup (xfree, data); |
| 384 | printf_filtered ("exe = '%s'\n", data); |
| 385 | do_cleanups (cleanup); |
| 386 | } |
| 387 | else |
| 388 | warning (_("unable to read link '%s'"), filename); |
| 389 | } |
| 390 | if (mappings_f) |
| 391 | { |
| 392 | xsnprintf (filename, sizeof filename, "/proc/%ld/maps", pid); |
| 393 | data = target_fileio_read_stralloc (filename); |
| 394 | if (data) |
| 395 | { |
| 396 | struct cleanup *cleanup = make_cleanup (xfree, data); |
| 397 | char *line; |
| 398 | |
| 399 | printf_filtered (_("Mapped address spaces:\n\n")); |
| 400 | if (gdbarch_addr_bit (gdbarch) == 32) |
| 401 | { |
| 402 | printf_filtered ("\t%10s %10s %10s %10s %s\n", |
| 403 | "Start Addr", |
| 404 | " End Addr", |
| 405 | " Size", " Offset", "objfile"); |
| 406 | } |
| 407 | else |
| 408 | { |
| 409 | printf_filtered (" %18s %18s %10s %10s %s\n", |
| 410 | "Start Addr", |
| 411 | " End Addr", |
| 412 | " Size", " Offset", "objfile"); |
| 413 | } |
| 414 | |
| 415 | for (line = strtok (data, "\n"); line; line = strtok (NULL, "\n")) |
| 416 | { |
| 417 | ULONGEST addr, endaddr, offset, inode; |
| 418 | const char *permissions, *device, *filename; |
| 419 | size_t permissions_len, device_len; |
| 420 | |
| 421 | read_mapping (line, &addr, &endaddr, |
| 422 | &permissions, &permissions_len, |
| 423 | &offset, &device, &device_len, |
| 424 | &inode, &filename); |
| 425 | |
| 426 | if (gdbarch_addr_bit (gdbarch) == 32) |
| 427 | { |
| 428 | printf_filtered ("\t%10s %10s %10s %10s %s\n", |
| 429 | paddress (gdbarch, addr), |
| 430 | paddress (gdbarch, endaddr), |
| 431 | hex_string (endaddr - addr), |
| 432 | hex_string (offset), |
| 433 | *filename? filename : ""); |
| 434 | } |
| 435 | else |
| 436 | { |
| 437 | printf_filtered (" %18s %18s %10s %10s %s\n", |
| 438 | paddress (gdbarch, addr), |
| 439 | paddress (gdbarch, endaddr), |
| 440 | hex_string (endaddr - addr), |
| 441 | hex_string (offset), |
| 442 | *filename? filename : ""); |
| 443 | } |
| 444 | } |
| 445 | |
| 446 | do_cleanups (cleanup); |
| 447 | } |
| 448 | else |
| 449 | warning (_("unable to open /proc file '%s'"), filename); |
| 450 | } |
| 451 | if (status_f) |
| 452 | { |
| 453 | xsnprintf (filename, sizeof filename, "/proc/%ld/status", pid); |
| 454 | data = target_fileio_read_stralloc (filename); |
| 455 | if (data) |
| 456 | { |
| 457 | struct cleanup *cleanup = make_cleanup (xfree, data); |
| 458 | puts_filtered (data); |
| 459 | do_cleanups (cleanup); |
| 460 | } |
| 461 | else |
| 462 | warning (_("unable to open /proc file '%s'"), filename); |
| 463 | } |
| 464 | if (stat_f) |
| 465 | { |
| 466 | xsnprintf (filename, sizeof filename, "/proc/%ld/stat", pid); |
| 467 | data = target_fileio_read_stralloc (filename); |
| 468 | if (data) |
| 469 | { |
| 470 | struct cleanup *cleanup = make_cleanup (xfree, data); |
| 471 | const char *p = data; |
| 472 | |
| 473 | printf_filtered (_("Process: %s\n"), |
| 474 | pulongest (strtoulst (p, &p, 10))); |
| 475 | |
| 476 | p = skip_spaces_const (p); |
| 477 | if (*p == '(') |
| 478 | { |
| 479 | const char *ep = strchr (p, ')'); |
| 480 | if (ep != NULL) |
| 481 | { |
| 482 | printf_filtered ("Exec file: %.*s\n", |
| 483 | (int) (ep - p - 1), p + 1); |
| 484 | p = ep + 1; |
| 485 | } |
| 486 | } |
| 487 | |
| 488 | p = skip_spaces_const (p); |
| 489 | if (*p) |
| 490 | printf_filtered (_("State: %c\n"), *p++); |
| 491 | |
| 492 | if (*p) |
| 493 | printf_filtered (_("Parent process: %s\n"), |
| 494 | pulongest (strtoulst (p, &p, 10))); |
| 495 | if (*p) |
| 496 | printf_filtered (_("Process group: %s\n"), |
| 497 | pulongest (strtoulst (p, &p, 10))); |
| 498 | if (*p) |
| 499 | printf_filtered (_("Session id: %s\n"), |
| 500 | pulongest (strtoulst (p, &p, 10))); |
| 501 | if (*p) |
| 502 | printf_filtered (_("TTY: %s\n"), |
| 503 | pulongest (strtoulst (p, &p, 10))); |
| 504 | if (*p) |
| 505 | printf_filtered (_("TTY owner process group: %s\n"), |
| 506 | pulongest (strtoulst (p, &p, 10))); |
| 507 | |
| 508 | if (*p) |
| 509 | printf_filtered (_("Flags: %s\n"), |
| 510 | hex_string (strtoulst (p, &p, 10))); |
| 511 | if (*p) |
| 512 | printf_filtered (_("Minor faults (no memory page): %s\n"), |
| 513 | pulongest (strtoulst (p, &p, 10))); |
| 514 | if (*p) |
| 515 | printf_filtered (_("Minor faults, children: %s\n"), |
| 516 | pulongest (strtoulst (p, &p, 10))); |
| 517 | if (*p) |
| 518 | printf_filtered (_("Major faults (memory page faults): %s\n"), |
| 519 | pulongest (strtoulst (p, &p, 10))); |
| 520 | if (*p) |
| 521 | printf_filtered (_("Major faults, children: %s\n"), |
| 522 | pulongest (strtoulst (p, &p, 10))); |
| 523 | if (*p) |
| 524 | printf_filtered (_("utime: %s\n"), |
| 525 | pulongest (strtoulst (p, &p, 10))); |
| 526 | if (*p) |
| 527 | printf_filtered (_("stime: %s\n"), |
| 528 | pulongest (strtoulst (p, &p, 10))); |
| 529 | if (*p) |
| 530 | printf_filtered (_("utime, children: %s\n"), |
| 531 | pulongest (strtoulst (p, &p, 10))); |
| 532 | if (*p) |
| 533 | printf_filtered (_("stime, children: %s\n"), |
| 534 | pulongest (strtoulst (p, &p, 10))); |
| 535 | if (*p) |
| 536 | printf_filtered (_("jiffies remaining in current " |
| 537 | "time slice: %s\n"), |
| 538 | pulongest (strtoulst (p, &p, 10))); |
| 539 | if (*p) |
| 540 | printf_filtered (_("'nice' value: %s\n"), |
| 541 | pulongest (strtoulst (p, &p, 10))); |
| 542 | if (*p) |
| 543 | printf_filtered (_("jiffies until next timeout: %s\n"), |
| 544 | pulongest (strtoulst (p, &p, 10))); |
| 545 | if (*p) |
| 546 | printf_filtered (_("jiffies until next SIGALRM: %s\n"), |
| 547 | pulongest (strtoulst (p, &p, 10))); |
| 548 | if (*p) |
| 549 | printf_filtered (_("start time (jiffies since " |
| 550 | "system boot): %s\n"), |
| 551 | pulongest (strtoulst (p, &p, 10))); |
| 552 | if (*p) |
| 553 | printf_filtered (_("Virtual memory size: %s\n"), |
| 554 | pulongest (strtoulst (p, &p, 10))); |
| 555 | if (*p) |
| 556 | printf_filtered (_("Resident set size: %s\n"), |
| 557 | pulongest (strtoulst (p, &p, 10))); |
| 558 | if (*p) |
| 559 | printf_filtered (_("rlim: %s\n"), |
| 560 | pulongest (strtoulst (p, &p, 10))); |
| 561 | if (*p) |
| 562 | printf_filtered (_("Start of text: %s\n"), |
| 563 | hex_string (strtoulst (p, &p, 10))); |
| 564 | if (*p) |
| 565 | printf_filtered (_("End of text: %s\n"), |
| 566 | hex_string (strtoulst (p, &p, 10))); |
| 567 | if (*p) |
| 568 | printf_filtered (_("Start of stack: %s\n"), |
| 569 | hex_string (strtoulst (p, &p, 10))); |
| 570 | #if 0 /* Don't know how architecture-dependent the rest is... |
| 571 | Anyway the signal bitmap info is available from "status". */ |
| 572 | if (*p) |
| 573 | printf_filtered (_("Kernel stack pointer: %s\n"), |
| 574 | hex_string (strtoulst (p, &p, 10))); |
| 575 | if (*p) |
| 576 | printf_filtered (_("Kernel instr pointer: %s\n"), |
| 577 | hex_string (strtoulst (p, &p, 10))); |
| 578 | if (*p) |
| 579 | printf_filtered (_("Pending signals bitmap: %s\n"), |
| 580 | hex_string (strtoulst (p, &p, 10))); |
| 581 | if (*p) |
| 582 | printf_filtered (_("Blocked signals bitmap: %s\n"), |
| 583 | hex_string (strtoulst (p, &p, 10))); |
| 584 | if (*p) |
| 585 | printf_filtered (_("Ignored signals bitmap: %s\n"), |
| 586 | hex_string (strtoulst (p, &p, 10))); |
| 587 | if (*p) |
| 588 | printf_filtered (_("Catched signals bitmap: %s\n"), |
| 589 | hex_string (strtoulst (p, &p, 10))); |
| 590 | if (*p) |
| 591 | printf_filtered (_("wchan (system call): %s\n"), |
| 592 | hex_string (strtoulst (p, &p, 10))); |
| 593 | #endif |
| 594 | do_cleanups (cleanup); |
| 595 | } |
| 596 | else |
| 597 | warning (_("unable to open /proc file '%s'"), filename); |
| 598 | } |
| 599 | } |
| 600 | |
| 601 | /* Implement "info proc mappings" for a corefile. */ |
| 602 | |
| 603 | static void |
| 604 | linux_core_info_proc_mappings (struct gdbarch *gdbarch, char *args) |
| 605 | { |
| 606 | asection *section; |
| 607 | ULONGEST count, page_size; |
| 608 | unsigned char *descdata, *filenames, *descend, *contents; |
| 609 | size_t note_size; |
| 610 | unsigned int addr_size_bits, addr_size; |
| 611 | struct cleanup *cleanup; |
| 612 | struct gdbarch *core_gdbarch = gdbarch_from_bfd (core_bfd); |
| 613 | /* We assume this for reading 64-bit core files. */ |
| 614 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
| 615 | |
| 616 | section = bfd_get_section_by_name (core_bfd, ".note.linuxcore.file"); |
| 617 | if (section == NULL) |
| 618 | { |
| 619 | warning (_("unable to find mappings in core file")); |
| 620 | return; |
| 621 | } |
| 622 | |
| 623 | addr_size_bits = gdbarch_addr_bit (core_gdbarch); |
| 624 | addr_size = addr_size_bits / 8; |
| 625 | note_size = bfd_get_section_size (section); |
| 626 | |
| 627 | if (note_size < 2 * addr_size) |
| 628 | error (_("malformed core note - too short for header")); |
| 629 | |
| 630 | contents = xmalloc (note_size); |
| 631 | cleanup = make_cleanup (xfree, contents); |
| 632 | if (!bfd_get_section_contents (core_bfd, section, contents, 0, note_size)) |
| 633 | error (_("could not get core note contents")); |
| 634 | |
| 635 | descdata = contents; |
| 636 | descend = descdata + note_size; |
| 637 | |
| 638 | if (descdata[note_size - 1] != '\0') |
| 639 | error (_("malformed note - does not end with \\0")); |
| 640 | |
| 641 | count = bfd_get (addr_size_bits, core_bfd, descdata); |
| 642 | descdata += addr_size; |
| 643 | |
| 644 | page_size = bfd_get (addr_size_bits, core_bfd, descdata); |
| 645 | descdata += addr_size; |
| 646 | |
| 647 | if (note_size < 2 * addr_size + count * 3 * addr_size) |
| 648 | error (_("malformed note - too short for supplied file count")); |
| 649 | |
| 650 | printf_filtered (_("Mapped address spaces:\n\n")); |
| 651 | if (gdbarch_addr_bit (gdbarch) == 32) |
| 652 | { |
| 653 | printf_filtered ("\t%10s %10s %10s %10s %s\n", |
| 654 | "Start Addr", |
| 655 | " End Addr", |
| 656 | " Size", " Offset", "objfile"); |
| 657 | } |
| 658 | else |
| 659 | { |
| 660 | printf_filtered (" %18s %18s %10s %10s %s\n", |
| 661 | "Start Addr", |
| 662 | " End Addr", |
| 663 | " Size", " Offset", "objfile"); |
| 664 | } |
| 665 | |
| 666 | filenames = descdata + count * 3 * addr_size; |
| 667 | while (--count > 0) |
| 668 | { |
| 669 | ULONGEST start, end, file_ofs; |
| 670 | |
| 671 | if (filenames == descend) |
| 672 | error (_("malformed note - filenames end too early")); |
| 673 | |
| 674 | start = bfd_get (addr_size_bits, core_bfd, descdata); |
| 675 | descdata += addr_size; |
| 676 | end = bfd_get (addr_size_bits, core_bfd, descdata); |
| 677 | descdata += addr_size; |
| 678 | file_ofs = bfd_get (addr_size_bits, core_bfd, descdata); |
| 679 | descdata += addr_size; |
| 680 | |
| 681 | file_ofs *= page_size; |
| 682 | |
| 683 | if (gdbarch_addr_bit (gdbarch) == 32) |
| 684 | printf_filtered ("\t%10s %10s %10s %10s %s\n", |
| 685 | paddress (gdbarch, start), |
| 686 | paddress (gdbarch, end), |
| 687 | hex_string (end - start), |
| 688 | hex_string (file_ofs), |
| 689 | filenames); |
| 690 | else |
| 691 | printf_filtered (" %18s %18s %10s %10s %s\n", |
| 692 | paddress (gdbarch, start), |
| 693 | paddress (gdbarch, end), |
| 694 | hex_string (end - start), |
| 695 | hex_string (file_ofs), |
| 696 | filenames); |
| 697 | |
| 698 | filenames += 1 + strlen ((char *) filenames); |
| 699 | } |
| 700 | |
| 701 | do_cleanups (cleanup); |
| 702 | } |
| 703 | |
| 704 | /* Implement "info proc" for a corefile. */ |
| 705 | |
| 706 | static void |
| 707 | linux_core_info_proc (struct gdbarch *gdbarch, char *args, |
| 708 | enum info_proc_what what) |
| 709 | { |
| 710 | int exe_f = (what == IP_MINIMAL || what == IP_EXE || what == IP_ALL); |
| 711 | int mappings_f = (what == IP_MAPPINGS || what == IP_ALL); |
| 712 | |
| 713 | if (exe_f) |
| 714 | { |
| 715 | const char *exe; |
| 716 | |
| 717 | exe = bfd_core_file_failing_command (core_bfd); |
| 718 | if (exe != NULL) |
| 719 | printf_filtered ("exe = '%s'\n", exe); |
| 720 | else |
| 721 | warning (_("unable to find command name in core file")); |
| 722 | } |
| 723 | |
| 724 | if (mappings_f) |
| 725 | linux_core_info_proc_mappings (gdbarch, args); |
| 726 | |
| 727 | if (!exe_f && !mappings_f) |
| 728 | error (_("unable to handle request")); |
| 729 | } |
| 730 | |
| 731 | typedef int linux_find_memory_region_ftype (ULONGEST vaddr, ULONGEST size, |
| 732 | ULONGEST offset, ULONGEST inode, |
| 733 | int read, int write, |
| 734 | int exec, int modified, |
| 735 | const char *filename, |
| 736 | void *data); |
| 737 | |
| 738 | /* List memory regions in the inferior for a corefile. */ |
| 739 | |
| 740 | static int |
| 741 | linux_find_memory_regions_full (struct gdbarch *gdbarch, |
| 742 | linux_find_memory_region_ftype *func, |
| 743 | void *obfd) |
| 744 | { |
| 745 | char mapsfilename[100]; |
| 746 | char *data; |
| 747 | |
| 748 | /* We need to know the real target PID to access /proc. */ |
| 749 | if (current_inferior ()->fake_pid_p) |
| 750 | return 1; |
| 751 | |
| 752 | xsnprintf (mapsfilename, sizeof mapsfilename, |
| 753 | "/proc/%d/smaps", current_inferior ()->pid); |
| 754 | data = target_fileio_read_stralloc (mapsfilename); |
| 755 | if (data == NULL) |
| 756 | { |
| 757 | /* Older Linux kernels did not support /proc/PID/smaps. */ |
| 758 | xsnprintf (mapsfilename, sizeof mapsfilename, |
| 759 | "/proc/%d/maps", current_inferior ()->pid); |
| 760 | data = target_fileio_read_stralloc (mapsfilename); |
| 761 | } |
| 762 | if (data) |
| 763 | { |
| 764 | struct cleanup *cleanup = make_cleanup (xfree, data); |
| 765 | char *line; |
| 766 | |
| 767 | line = strtok (data, "\n"); |
| 768 | while (line) |
| 769 | { |
| 770 | ULONGEST addr, endaddr, offset, inode; |
| 771 | const char *permissions, *device, *filename; |
| 772 | size_t permissions_len, device_len; |
| 773 | int read, write, exec; |
| 774 | int modified = 0, has_anonymous = 0; |
| 775 | |
| 776 | read_mapping (line, &addr, &endaddr, &permissions, &permissions_len, |
| 777 | &offset, &device, &device_len, &inode, &filename); |
| 778 | |
| 779 | /* Decode permissions. */ |
| 780 | read = (memchr (permissions, 'r', permissions_len) != 0); |
| 781 | write = (memchr (permissions, 'w', permissions_len) != 0); |
| 782 | exec = (memchr (permissions, 'x', permissions_len) != 0); |
| 783 | |
| 784 | /* Try to detect if region was modified by parsing smaps counters. */ |
| 785 | for (line = strtok (NULL, "\n"); |
| 786 | line && line[0] >= 'A' && line[0] <= 'Z'; |
| 787 | line = strtok (NULL, "\n")) |
| 788 | { |
| 789 | char keyword[64 + 1]; |
| 790 | |
| 791 | if (sscanf (line, "%64s", keyword) != 1) |
| 792 | { |
| 793 | warning (_("Error parsing {s,}maps file '%s'"), mapsfilename); |
| 794 | break; |
| 795 | } |
| 796 | if (strcmp (keyword, "Anonymous:") == 0) |
| 797 | has_anonymous = 1; |
| 798 | if (strcmp (keyword, "Shared_Dirty:") == 0 |
| 799 | || strcmp (keyword, "Private_Dirty:") == 0 |
| 800 | || strcmp (keyword, "Swap:") == 0 |
| 801 | || strcmp (keyword, "Anonymous:") == 0) |
| 802 | { |
| 803 | unsigned long number; |
| 804 | |
| 805 | if (sscanf (line, "%*s%lu", &number) != 1) |
| 806 | { |
| 807 | warning (_("Error parsing {s,}maps file '%s' number"), |
| 808 | mapsfilename); |
| 809 | break; |
| 810 | } |
| 811 | if (number != 0) |
| 812 | modified = 1; |
| 813 | } |
| 814 | } |
| 815 | |
| 816 | /* Older Linux kernels did not support the "Anonymous:" counter. |
| 817 | If it is missing, we can't be sure - dump all the pages. */ |
| 818 | if (!has_anonymous) |
| 819 | modified = 1; |
| 820 | |
| 821 | /* Invoke the callback function to create the corefile segment. */ |
| 822 | func (addr, endaddr - addr, offset, inode, |
| 823 | read, write, exec, modified, filename, obfd); |
| 824 | } |
| 825 | |
| 826 | do_cleanups (cleanup); |
| 827 | return 0; |
| 828 | } |
| 829 | |
| 830 | return 1; |
| 831 | } |
| 832 | |
| 833 | /* A structure for passing information through |
| 834 | linux_find_memory_regions_full. */ |
| 835 | |
| 836 | struct linux_find_memory_regions_data |
| 837 | { |
| 838 | /* The original callback. */ |
| 839 | |
| 840 | find_memory_region_ftype func; |
| 841 | |
| 842 | /* The original datum. */ |
| 843 | |
| 844 | void *obfd; |
| 845 | }; |
| 846 | |
| 847 | /* A callback for linux_find_memory_regions that converts between the |
| 848 | "full"-style callback and find_memory_region_ftype. */ |
| 849 | |
| 850 | static int |
| 851 | linux_find_memory_regions_thunk (ULONGEST vaddr, ULONGEST size, |
| 852 | ULONGEST offset, ULONGEST inode, |
| 853 | int read, int write, int exec, int modified, |
| 854 | const char *filename, void *arg) |
| 855 | { |
| 856 | struct linux_find_memory_regions_data *data = arg; |
| 857 | |
| 858 | return data->func (vaddr, size, read, write, exec, modified, data->obfd); |
| 859 | } |
| 860 | |
| 861 | /* A variant of linux_find_memory_regions_full that is suitable as the |
| 862 | gdbarch find_memory_regions method. */ |
| 863 | |
| 864 | static int |
| 865 | linux_find_memory_regions (struct gdbarch *gdbarch, |
| 866 | find_memory_region_ftype func, void *obfd) |
| 867 | { |
| 868 | struct linux_find_memory_regions_data data; |
| 869 | |
| 870 | data.func = func; |
| 871 | data.obfd = obfd; |
| 872 | |
| 873 | return linux_find_memory_regions_full (gdbarch, |
| 874 | linux_find_memory_regions_thunk, |
| 875 | &data); |
| 876 | } |
| 877 | |
| 878 | /* Determine which signal stopped execution. */ |
| 879 | |
| 880 | static int |
| 881 | find_signalled_thread (struct thread_info *info, void *data) |
| 882 | { |
| 883 | if (info->suspend.stop_signal != GDB_SIGNAL_0 |
| 884 | && ptid_get_pid (info->ptid) == ptid_get_pid (inferior_ptid)) |
| 885 | return 1; |
| 886 | |
| 887 | return 0; |
| 888 | } |
| 889 | |
| 890 | static enum gdb_signal |
| 891 | find_stop_signal (void) |
| 892 | { |
| 893 | struct thread_info *info = |
| 894 | iterate_over_threads (find_signalled_thread, NULL); |
| 895 | |
| 896 | if (info) |
| 897 | return info->suspend.stop_signal; |
| 898 | else |
| 899 | return GDB_SIGNAL_0; |
| 900 | } |
| 901 | |
| 902 | /* Generate corefile notes for SPU contexts. */ |
| 903 | |
| 904 | static char * |
| 905 | linux_spu_make_corefile_notes (bfd *obfd, char *note_data, int *note_size) |
| 906 | { |
| 907 | static const char *spu_files[] = |
| 908 | { |
| 909 | "object-id", |
| 910 | "mem", |
| 911 | "regs", |
| 912 | "fpcr", |
| 913 | "lslr", |
| 914 | "decr", |
| 915 | "decr_status", |
| 916 | "signal1", |
| 917 | "signal1_type", |
| 918 | "signal2", |
| 919 | "signal2_type", |
| 920 | "event_mask", |
| 921 | "event_status", |
| 922 | "mbox_info", |
| 923 | "ibox_info", |
| 924 | "wbox_info", |
| 925 | "dma_info", |
| 926 | "proxydma_info", |
| 927 | }; |
| 928 | |
| 929 | enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ()); |
| 930 | gdb_byte *spu_ids; |
| 931 | LONGEST i, j, size; |
| 932 | |
| 933 | /* Determine list of SPU ids. */ |
| 934 | size = target_read_alloc (¤t_target, TARGET_OBJECT_SPU, |
| 935 | NULL, &spu_ids); |
| 936 | |
| 937 | /* Generate corefile notes for each SPU file. */ |
| 938 | for (i = 0; i < size; i += 4) |
| 939 | { |
| 940 | int fd = extract_unsigned_integer (spu_ids + i, 4, byte_order); |
| 941 | |
| 942 | for (j = 0; j < sizeof (spu_files) / sizeof (spu_files[0]); j++) |
| 943 | { |
| 944 | char annex[32], note_name[32]; |
| 945 | gdb_byte *spu_data; |
| 946 | LONGEST spu_len; |
| 947 | |
| 948 | xsnprintf (annex, sizeof annex, "%d/%s", fd, spu_files[j]); |
| 949 | spu_len = target_read_alloc (¤t_target, TARGET_OBJECT_SPU, |
| 950 | annex, &spu_data); |
| 951 | if (spu_len > 0) |
| 952 | { |
| 953 | xsnprintf (note_name, sizeof note_name, "SPU/%s", annex); |
| 954 | note_data = elfcore_write_note (obfd, note_data, note_size, |
| 955 | note_name, NT_SPU, |
| 956 | spu_data, spu_len); |
| 957 | xfree (spu_data); |
| 958 | |
| 959 | if (!note_data) |
| 960 | { |
| 961 | xfree (spu_ids); |
| 962 | return NULL; |
| 963 | } |
| 964 | } |
| 965 | } |
| 966 | } |
| 967 | |
| 968 | if (size > 0) |
| 969 | xfree (spu_ids); |
| 970 | |
| 971 | return note_data; |
| 972 | } |
| 973 | |
| 974 | /* This is used to pass information from |
| 975 | linux_make_mappings_corefile_notes through |
| 976 | linux_find_memory_regions_full. */ |
| 977 | |
| 978 | struct linux_make_mappings_data |
| 979 | { |
| 980 | /* Number of files mapped. */ |
| 981 | ULONGEST file_count; |
| 982 | |
| 983 | /* The obstack for the main part of the data. */ |
| 984 | struct obstack *data_obstack; |
| 985 | |
| 986 | /* The filename obstack. */ |
| 987 | struct obstack *filename_obstack; |
| 988 | |
| 989 | /* The architecture's "long" type. */ |
| 990 | struct type *long_type; |
| 991 | }; |
| 992 | |
| 993 | static linux_find_memory_region_ftype linux_make_mappings_callback; |
| 994 | |
| 995 | /* A callback for linux_find_memory_regions_full that updates the |
| 996 | mappings data for linux_make_mappings_corefile_notes. */ |
| 997 | |
| 998 | static int |
| 999 | linux_make_mappings_callback (ULONGEST vaddr, ULONGEST size, |
| 1000 | ULONGEST offset, ULONGEST inode, |
| 1001 | int read, int write, int exec, int modified, |
| 1002 | const char *filename, void *data) |
| 1003 | { |
| 1004 | struct linux_make_mappings_data *map_data = data; |
| 1005 | gdb_byte buf[sizeof (ULONGEST)]; |
| 1006 | |
| 1007 | if (*filename == '\0' || inode == 0) |
| 1008 | return 0; |
| 1009 | |
| 1010 | ++map_data->file_count; |
| 1011 | |
| 1012 | pack_long (buf, map_data->long_type, vaddr); |
| 1013 | obstack_grow (map_data->data_obstack, buf, TYPE_LENGTH (map_data->long_type)); |
| 1014 | pack_long (buf, map_data->long_type, vaddr + size); |
| 1015 | obstack_grow (map_data->data_obstack, buf, TYPE_LENGTH (map_data->long_type)); |
| 1016 | pack_long (buf, map_data->long_type, offset); |
| 1017 | obstack_grow (map_data->data_obstack, buf, TYPE_LENGTH (map_data->long_type)); |
| 1018 | |
| 1019 | obstack_grow_str0 (map_data->filename_obstack, filename); |
| 1020 | |
| 1021 | return 0; |
| 1022 | } |
| 1023 | |
| 1024 | /* Write the file mapping data to the core file, if possible. OBFD is |
| 1025 | the output BFD. NOTE_DATA is the current note data, and NOTE_SIZE |
| 1026 | is a pointer to the note size. Returns the new NOTE_DATA and |
| 1027 | updates NOTE_SIZE. */ |
| 1028 | |
| 1029 | static char * |
| 1030 | linux_make_mappings_corefile_notes (struct gdbarch *gdbarch, bfd *obfd, |
| 1031 | char *note_data, int *note_size) |
| 1032 | { |
| 1033 | struct cleanup *cleanup; |
| 1034 | struct obstack data_obstack, filename_obstack; |
| 1035 | struct linux_make_mappings_data mapping_data; |
| 1036 | struct type *long_type |
| 1037 | = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch), 0, "long"); |
| 1038 | gdb_byte buf[sizeof (ULONGEST)]; |
| 1039 | |
| 1040 | obstack_init (&data_obstack); |
| 1041 | cleanup = make_cleanup_obstack_free (&data_obstack); |
| 1042 | obstack_init (&filename_obstack); |
| 1043 | make_cleanup_obstack_free (&filename_obstack); |
| 1044 | |
| 1045 | mapping_data.file_count = 0; |
| 1046 | mapping_data.data_obstack = &data_obstack; |
| 1047 | mapping_data.filename_obstack = &filename_obstack; |
| 1048 | mapping_data.long_type = long_type; |
| 1049 | |
| 1050 | /* Reserve space for the count. */ |
| 1051 | obstack_blank (&data_obstack, TYPE_LENGTH (long_type)); |
| 1052 | /* We always write the page size as 1 since we have no good way to |
| 1053 | determine the correct value. */ |
| 1054 | pack_long (buf, long_type, 1); |
| 1055 | obstack_grow (&data_obstack, buf, TYPE_LENGTH (long_type)); |
| 1056 | |
| 1057 | linux_find_memory_regions_full (gdbarch, linux_make_mappings_callback, |
| 1058 | &mapping_data); |
| 1059 | |
| 1060 | if (mapping_data.file_count != 0) |
| 1061 | { |
| 1062 | /* Write the count to the obstack. */ |
| 1063 | pack_long ((gdb_byte *) obstack_base (&data_obstack), |
| 1064 | long_type, mapping_data.file_count); |
| 1065 | |
| 1066 | /* Copy the filenames to the data obstack. */ |
| 1067 | obstack_grow (&data_obstack, obstack_base (&filename_obstack), |
| 1068 | obstack_object_size (&filename_obstack)); |
| 1069 | |
| 1070 | note_data = elfcore_write_note (obfd, note_data, note_size, |
| 1071 | "CORE", NT_FILE, |
| 1072 | obstack_base (&data_obstack), |
| 1073 | obstack_object_size (&data_obstack)); |
| 1074 | } |
| 1075 | |
| 1076 | do_cleanups (cleanup); |
| 1077 | return note_data; |
| 1078 | } |
| 1079 | |
| 1080 | /* Records the thread's register state for the corefile note |
| 1081 | section. */ |
| 1082 | |
| 1083 | static char * |
| 1084 | linux_collect_thread_registers (const struct regcache *regcache, |
| 1085 | ptid_t ptid, bfd *obfd, |
| 1086 | char *note_data, int *note_size, |
| 1087 | enum gdb_signal stop_signal) |
| 1088 | { |
| 1089 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
| 1090 | struct core_regset_section *sect_list; |
| 1091 | unsigned long lwp; |
| 1092 | |
| 1093 | sect_list = gdbarch_core_regset_sections (gdbarch); |
| 1094 | gdb_assert (sect_list); |
| 1095 | |
| 1096 | /* For remote targets the LWP may not be available, so use the TID. */ |
| 1097 | lwp = ptid_get_lwp (ptid); |
| 1098 | if (!lwp) |
| 1099 | lwp = ptid_get_tid (ptid); |
| 1100 | |
| 1101 | while (sect_list->sect_name != NULL) |
| 1102 | { |
| 1103 | const struct regset *regset; |
| 1104 | char *buf; |
| 1105 | |
| 1106 | regset = gdbarch_regset_from_core_section (gdbarch, |
| 1107 | sect_list->sect_name, |
| 1108 | sect_list->size); |
| 1109 | gdb_assert (regset && regset->collect_regset); |
| 1110 | |
| 1111 | buf = xmalloc (sect_list->size); |
| 1112 | regset->collect_regset (regset, regcache, -1, buf, sect_list->size); |
| 1113 | |
| 1114 | /* PRSTATUS still needs to be treated specially. */ |
| 1115 | if (strcmp (sect_list->sect_name, ".reg") == 0) |
| 1116 | note_data = (char *) elfcore_write_prstatus |
| 1117 | (obfd, note_data, note_size, lwp, |
| 1118 | gdb_signal_to_host (stop_signal), buf); |
| 1119 | else |
| 1120 | note_data = (char *) elfcore_write_register_note |
| 1121 | (obfd, note_data, note_size, |
| 1122 | sect_list->sect_name, buf, sect_list->size); |
| 1123 | xfree (buf); |
| 1124 | sect_list++; |
| 1125 | |
| 1126 | if (!note_data) |
| 1127 | return NULL; |
| 1128 | } |
| 1129 | |
| 1130 | return note_data; |
| 1131 | } |
| 1132 | |
| 1133 | /* Fetch the siginfo data for the current thread, if it exists. If |
| 1134 | there is no data, or we could not read it, return NULL. Otherwise, |
| 1135 | return a newly malloc'd buffer holding the data and fill in *SIZE |
| 1136 | with the size of the data. The caller is responsible for freeing |
| 1137 | the data. */ |
| 1138 | |
| 1139 | static gdb_byte * |
| 1140 | linux_get_siginfo_data (struct gdbarch *gdbarch, LONGEST *size) |
| 1141 | { |
| 1142 | struct type *siginfo_type; |
| 1143 | gdb_byte *buf; |
| 1144 | LONGEST bytes_read; |
| 1145 | struct cleanup *cleanups; |
| 1146 | |
| 1147 | if (!gdbarch_get_siginfo_type_p (gdbarch)) |
| 1148 | return NULL; |
| 1149 | |
| 1150 | siginfo_type = gdbarch_get_siginfo_type (gdbarch); |
| 1151 | |
| 1152 | buf = xmalloc (TYPE_LENGTH (siginfo_type)); |
| 1153 | cleanups = make_cleanup (xfree, buf); |
| 1154 | |
| 1155 | bytes_read = target_read (¤t_target, TARGET_OBJECT_SIGNAL_INFO, NULL, |
| 1156 | buf, 0, TYPE_LENGTH (siginfo_type)); |
| 1157 | if (bytes_read == TYPE_LENGTH (siginfo_type)) |
| 1158 | { |
| 1159 | discard_cleanups (cleanups); |
| 1160 | *size = bytes_read; |
| 1161 | } |
| 1162 | else |
| 1163 | { |
| 1164 | do_cleanups (cleanups); |
| 1165 | buf = NULL; |
| 1166 | } |
| 1167 | |
| 1168 | return buf; |
| 1169 | } |
| 1170 | |
| 1171 | struct linux_corefile_thread_data |
| 1172 | { |
| 1173 | struct gdbarch *gdbarch; |
| 1174 | int pid; |
| 1175 | bfd *obfd; |
| 1176 | char *note_data; |
| 1177 | int *note_size; |
| 1178 | enum gdb_signal stop_signal; |
| 1179 | linux_collect_thread_registers_ftype collect; |
| 1180 | }; |
| 1181 | |
| 1182 | /* Called by gdbthread.c once per thread. Records the thread's |
| 1183 | register state for the corefile note section. */ |
| 1184 | |
| 1185 | static int |
| 1186 | linux_corefile_thread_callback (struct thread_info *info, void *data) |
| 1187 | { |
| 1188 | struct linux_corefile_thread_data *args = data; |
| 1189 | |
| 1190 | if (ptid_get_pid (info->ptid) == args->pid) |
| 1191 | { |
| 1192 | struct cleanup *old_chain; |
| 1193 | struct regcache *regcache; |
| 1194 | gdb_byte *siginfo_data; |
| 1195 | LONGEST siginfo_size = 0; |
| 1196 | |
| 1197 | regcache = get_thread_arch_regcache (info->ptid, args->gdbarch); |
| 1198 | |
| 1199 | old_chain = save_inferior_ptid (); |
| 1200 | inferior_ptid = info->ptid; |
| 1201 | target_fetch_registers (regcache, -1); |
| 1202 | siginfo_data = linux_get_siginfo_data (args->gdbarch, &siginfo_size); |
| 1203 | do_cleanups (old_chain); |
| 1204 | |
| 1205 | old_chain = make_cleanup (xfree, siginfo_data); |
| 1206 | |
| 1207 | args->note_data = args->collect (regcache, info->ptid, args->obfd, |
| 1208 | args->note_data, args->note_size, |
| 1209 | args->stop_signal); |
| 1210 | |
| 1211 | /* Don't return anything if we got no register information above, |
| 1212 | such a core file is useless. */ |
| 1213 | if (args->note_data != NULL) |
| 1214 | if (siginfo_data != NULL) |
| 1215 | args->note_data = elfcore_write_note (args->obfd, |
| 1216 | args->note_data, |
| 1217 | args->note_size, |
| 1218 | "CORE", NT_SIGINFO, |
| 1219 | siginfo_data, siginfo_size); |
| 1220 | |
| 1221 | do_cleanups (old_chain); |
| 1222 | } |
| 1223 | |
| 1224 | return !args->note_data; |
| 1225 | } |
| 1226 | |
| 1227 | /* Fill the PRPSINFO structure with information about the process being |
| 1228 | debugged. Returns 1 in case of success, 0 for failures. Please note that |
| 1229 | even if the structure cannot be entirely filled (e.g., GDB was unable to |
| 1230 | gather information about the process UID/GID), this function will still |
| 1231 | return 1 since some information was already recorded. It will only return |
| 1232 | 0 iff nothing can be gathered. */ |
| 1233 | |
| 1234 | static int |
| 1235 | linux_fill_prpsinfo (struct elf_internal_linux_prpsinfo *p) |
| 1236 | { |
| 1237 | /* The filename which we will use to obtain some info about the process. |
| 1238 | We will basically use this to store the `/proc/PID/FILENAME' file. */ |
| 1239 | char filename[100]; |
| 1240 | /* The full name of the program which generated the corefile. */ |
| 1241 | char *fname; |
| 1242 | /* The basename of the executable. */ |
| 1243 | const char *basename; |
| 1244 | /* The arguments of the program. */ |
| 1245 | char *psargs; |
| 1246 | char *infargs; |
| 1247 | /* The contents of `/proc/PID/stat' and `/proc/PID/status' files. */ |
| 1248 | char *proc_stat, *proc_status; |
| 1249 | /* Temporary buffer. */ |
| 1250 | char *tmpstr; |
| 1251 | /* The valid states of a process, according to the Linux kernel. */ |
| 1252 | const char valid_states[] = "RSDTZW"; |
| 1253 | /* The program state. */ |
| 1254 | const char *prog_state; |
| 1255 | /* The state of the process. */ |
| 1256 | char pr_sname; |
| 1257 | /* The PID of the program which generated the corefile. */ |
| 1258 | pid_t pid; |
| 1259 | /* Process flags. */ |
| 1260 | unsigned int pr_flag; |
| 1261 | /* Process nice value. */ |
| 1262 | long pr_nice; |
| 1263 | /* The number of fields read by `sscanf'. */ |
| 1264 | int n_fields = 0; |
| 1265 | /* Cleanups. */ |
| 1266 | struct cleanup *c; |
| 1267 | int i; |
| 1268 | |
| 1269 | gdb_assert (p != NULL); |
| 1270 | |
| 1271 | /* Obtaining PID and filename. */ |
| 1272 | pid = ptid_get_pid (inferior_ptid); |
| 1273 | xsnprintf (filename, sizeof (filename), "/proc/%d/cmdline", (int) pid); |
| 1274 | fname = target_fileio_read_stralloc (filename); |
| 1275 | |
| 1276 | if (fname == NULL || *fname == '\0') |
| 1277 | { |
| 1278 | /* No program name was read, so we won't be able to retrieve more |
| 1279 | information about the process. */ |
| 1280 | xfree (fname); |
| 1281 | return 0; |
| 1282 | } |
| 1283 | |
| 1284 | c = make_cleanup (xfree, fname); |
| 1285 | memset (p, 0, sizeof (*p)); |
| 1286 | |
| 1287 | /* Defining the PID. */ |
| 1288 | p->pr_pid = pid; |
| 1289 | |
| 1290 | /* Copying the program name. Only the basename matters. */ |
| 1291 | basename = lbasename (fname); |
| 1292 | strncpy (p->pr_fname, basename, sizeof (p->pr_fname)); |
| 1293 | p->pr_fname[sizeof (p->pr_fname) - 1] = '\0'; |
| 1294 | |
| 1295 | infargs = get_inferior_args (); |
| 1296 | |
| 1297 | psargs = xstrdup (fname); |
| 1298 | if (infargs != NULL) |
| 1299 | psargs = reconcat (psargs, psargs, " ", infargs, NULL); |
| 1300 | |
| 1301 | make_cleanup (xfree, psargs); |
| 1302 | |
| 1303 | strncpy (p->pr_psargs, psargs, sizeof (p->pr_psargs)); |
| 1304 | p->pr_psargs[sizeof (p->pr_psargs) - 1] = '\0'; |
| 1305 | |
| 1306 | xsnprintf (filename, sizeof (filename), "/proc/%d/stat", (int) pid); |
| 1307 | proc_stat = target_fileio_read_stralloc (filename); |
| 1308 | make_cleanup (xfree, proc_stat); |
| 1309 | |
| 1310 | if (proc_stat == NULL || *proc_stat == '\0') |
| 1311 | { |
| 1312 | /* Despite being unable to read more information about the |
| 1313 | process, we return 1 here because at least we have its |
| 1314 | command line, PID and arguments. */ |
| 1315 | do_cleanups (c); |
| 1316 | return 1; |
| 1317 | } |
| 1318 | |
| 1319 | /* Ok, we have the stats. It's time to do a little parsing of the |
| 1320 | contents of the buffer, so that we end up reading what we want. |
| 1321 | |
| 1322 | The following parsing mechanism is strongly based on the |
| 1323 | information generated by the `fs/proc/array.c' file, present in |
| 1324 | the Linux kernel tree. More details about how the information is |
| 1325 | displayed can be obtained by seeing the manpage of proc(5), |
| 1326 | specifically under the entry of `/proc/[pid]/stat'. */ |
| 1327 | |
| 1328 | /* Getting rid of the PID, since we already have it. */ |
| 1329 | while (isdigit (*proc_stat)) |
| 1330 | ++proc_stat; |
| 1331 | |
| 1332 | proc_stat = skip_spaces (proc_stat); |
| 1333 | |
| 1334 | /* Getting rid of the executable name, since we already have it. We |
| 1335 | know that this name will be in parentheses, so we can safely look |
| 1336 | for the close-paren. */ |
| 1337 | while (*proc_stat != ')') |
| 1338 | ++proc_stat; |
| 1339 | ++proc_stat; |
| 1340 | |
| 1341 | proc_stat = skip_spaces (proc_stat); |
| 1342 | |
| 1343 | n_fields = sscanf (proc_stat, |
| 1344 | "%c" /* Process state. */ |
| 1345 | "%d%d%d" /* Parent PID, group ID, session ID. */ |
| 1346 | "%*d%*d" /* tty_nr, tpgid (not used). */ |
| 1347 | "%u" /* Flags. */ |
| 1348 | "%*s%*s%*s%*s" /* minflt, cminflt, majflt, |
| 1349 | cmajflt (not used). */ |
| 1350 | "%*s%*s%*s%*s" /* utime, stime, cutime, |
| 1351 | cstime (not used). */ |
| 1352 | "%*s" /* Priority (not used). */ |
| 1353 | "%ld", /* Nice. */ |
| 1354 | &pr_sname, |
| 1355 | &p->pr_ppid, &p->pr_pgrp, &p->pr_sid, |
| 1356 | &pr_flag, |
| 1357 | &pr_nice); |
| 1358 | |
| 1359 | if (n_fields != 6) |
| 1360 | { |
| 1361 | /* Again, we couldn't read the complementary information about |
| 1362 | the process state. However, we already have minimal |
| 1363 | information, so we just return 1 here. */ |
| 1364 | do_cleanups (c); |
| 1365 | return 1; |
| 1366 | } |
| 1367 | |
| 1368 | /* Filling the structure fields. */ |
| 1369 | prog_state = strchr (valid_states, pr_sname); |
| 1370 | if (prog_state != NULL) |
| 1371 | p->pr_state = prog_state - valid_states; |
| 1372 | else |
| 1373 | { |
| 1374 | /* Zero means "Running". */ |
| 1375 | p->pr_state = 0; |
| 1376 | } |
| 1377 | |
| 1378 | p->pr_sname = p->pr_state > 5 ? '.' : pr_sname; |
| 1379 | p->pr_zomb = p->pr_sname == 'Z'; |
| 1380 | p->pr_nice = pr_nice; |
| 1381 | p->pr_flag = pr_flag; |
| 1382 | |
| 1383 | /* Finally, obtaining the UID and GID. For that, we read and parse the |
| 1384 | contents of the `/proc/PID/status' file. */ |
| 1385 | xsnprintf (filename, sizeof (filename), "/proc/%d/status", (int) pid); |
| 1386 | proc_status = target_fileio_read_stralloc (filename); |
| 1387 | make_cleanup (xfree, proc_status); |
| 1388 | |
| 1389 | if (proc_status == NULL || *proc_status == '\0') |
| 1390 | { |
| 1391 | /* Returning 1 since we already have a bunch of information. */ |
| 1392 | do_cleanups (c); |
| 1393 | return 1; |
| 1394 | } |
| 1395 | |
| 1396 | /* Extracting the UID. */ |
| 1397 | tmpstr = strstr (proc_status, "Uid:"); |
| 1398 | if (tmpstr != NULL) |
| 1399 | { |
| 1400 | /* Advancing the pointer to the beginning of the UID. */ |
| 1401 | tmpstr += sizeof ("Uid:"); |
| 1402 | while (*tmpstr != '\0' && !isdigit (*tmpstr)) |
| 1403 | ++tmpstr; |
| 1404 | |
| 1405 | if (isdigit (*tmpstr)) |
| 1406 | p->pr_uid = strtol (tmpstr, &tmpstr, 10); |
| 1407 | } |
| 1408 | |
| 1409 | /* Extracting the GID. */ |
| 1410 | tmpstr = strstr (proc_status, "Gid:"); |
| 1411 | if (tmpstr != NULL) |
| 1412 | { |
| 1413 | /* Advancing the pointer to the beginning of the GID. */ |
| 1414 | tmpstr += sizeof ("Gid:"); |
| 1415 | while (*tmpstr != '\0' && !isdigit (*tmpstr)) |
| 1416 | ++tmpstr; |
| 1417 | |
| 1418 | if (isdigit (*tmpstr)) |
| 1419 | p->pr_gid = strtol (tmpstr, &tmpstr, 10); |
| 1420 | } |
| 1421 | |
| 1422 | do_cleanups (c); |
| 1423 | |
| 1424 | return 1; |
| 1425 | } |
| 1426 | |
| 1427 | /* Fills the "to_make_corefile_note" target vector. Builds the note |
| 1428 | section for a corefile, and returns it in a malloc buffer. */ |
| 1429 | |
| 1430 | char * |
| 1431 | linux_make_corefile_notes (struct gdbarch *gdbarch, bfd *obfd, int *note_size, |
| 1432 | linux_collect_thread_registers_ftype collect) |
| 1433 | { |
| 1434 | struct linux_corefile_thread_data thread_args; |
| 1435 | struct elf_internal_linux_prpsinfo prpsinfo; |
| 1436 | char *note_data = NULL; |
| 1437 | gdb_byte *auxv; |
| 1438 | int auxv_len; |
| 1439 | |
| 1440 | if (linux_fill_prpsinfo (&prpsinfo)) |
| 1441 | { |
| 1442 | if (gdbarch_elfcore_write_linux_prpsinfo_p (gdbarch)) |
| 1443 | { |
| 1444 | note_data = gdbarch_elfcore_write_linux_prpsinfo (gdbarch, obfd, |
| 1445 | note_data, note_size, |
| 1446 | &prpsinfo); |
| 1447 | } |
| 1448 | else |
| 1449 | { |
| 1450 | if (gdbarch_ptr_bit (gdbarch) == 64) |
| 1451 | note_data = elfcore_write_linux_prpsinfo64 (obfd, |
| 1452 | note_data, note_size, |
| 1453 | &prpsinfo); |
| 1454 | else |
| 1455 | note_data = elfcore_write_linux_prpsinfo32 (obfd, |
| 1456 | note_data, note_size, |
| 1457 | &prpsinfo); |
| 1458 | } |
| 1459 | } |
| 1460 | |
| 1461 | /* Thread register information. */ |
| 1462 | thread_args.gdbarch = gdbarch; |
| 1463 | thread_args.pid = ptid_get_pid (inferior_ptid); |
| 1464 | thread_args.obfd = obfd; |
| 1465 | thread_args.note_data = note_data; |
| 1466 | thread_args.note_size = note_size; |
| 1467 | thread_args.stop_signal = find_stop_signal (); |
| 1468 | thread_args.collect = collect; |
| 1469 | iterate_over_threads (linux_corefile_thread_callback, &thread_args); |
| 1470 | note_data = thread_args.note_data; |
| 1471 | if (!note_data) |
| 1472 | return NULL; |
| 1473 | |
| 1474 | /* Auxillary vector. */ |
| 1475 | auxv_len = target_read_alloc (¤t_target, TARGET_OBJECT_AUXV, |
| 1476 | NULL, &auxv); |
| 1477 | if (auxv_len > 0) |
| 1478 | { |
| 1479 | note_data = elfcore_write_note (obfd, note_data, note_size, |
| 1480 | "CORE", NT_AUXV, auxv, auxv_len); |
| 1481 | xfree (auxv); |
| 1482 | |
| 1483 | if (!note_data) |
| 1484 | return NULL; |
| 1485 | } |
| 1486 | |
| 1487 | /* SPU information. */ |
| 1488 | note_data = linux_spu_make_corefile_notes (obfd, note_data, note_size); |
| 1489 | if (!note_data) |
| 1490 | return NULL; |
| 1491 | |
| 1492 | /* File mappings. */ |
| 1493 | note_data = linux_make_mappings_corefile_notes (gdbarch, obfd, |
| 1494 | note_data, note_size); |
| 1495 | |
| 1496 | make_cleanup (xfree, note_data); |
| 1497 | return note_data; |
| 1498 | } |
| 1499 | |
| 1500 | static char * |
| 1501 | linux_make_corefile_notes_1 (struct gdbarch *gdbarch, bfd *obfd, int *note_size) |
| 1502 | { |
| 1503 | /* FIXME: uweigand/2011-10-06: Once all GNU/Linux architectures have been |
| 1504 | converted to gdbarch_core_regset_sections, we no longer need to fall back |
| 1505 | to the target method at this point. */ |
| 1506 | |
| 1507 | if (!gdbarch_core_regset_sections (gdbarch)) |
| 1508 | return target_make_corefile_notes (obfd, note_size); |
| 1509 | else |
| 1510 | return linux_make_corefile_notes (gdbarch, obfd, note_size, |
| 1511 | linux_collect_thread_registers); |
| 1512 | } |
| 1513 | |
| 1514 | /* Implementation of `gdbarch_gdb_signal_from_target', as defined in |
| 1515 | gdbarch.h. This function is not static because it is exported to |
| 1516 | other -tdep files. */ |
| 1517 | |
| 1518 | enum gdb_signal |
| 1519 | linux_gdb_signal_from_target (struct gdbarch *gdbarch, int signal) |
| 1520 | { |
| 1521 | switch (signal) |
| 1522 | { |
| 1523 | case 0: |
| 1524 | return GDB_SIGNAL_0; |
| 1525 | |
| 1526 | case LINUX_SIGHUP: |
| 1527 | return GDB_SIGNAL_HUP; |
| 1528 | |
| 1529 | case LINUX_SIGINT: |
| 1530 | return GDB_SIGNAL_INT; |
| 1531 | |
| 1532 | case LINUX_SIGQUIT: |
| 1533 | return GDB_SIGNAL_QUIT; |
| 1534 | |
| 1535 | case LINUX_SIGILL: |
| 1536 | return GDB_SIGNAL_ILL; |
| 1537 | |
| 1538 | case LINUX_SIGTRAP: |
| 1539 | return GDB_SIGNAL_TRAP; |
| 1540 | |
| 1541 | case LINUX_SIGABRT: |
| 1542 | return GDB_SIGNAL_ABRT; |
| 1543 | |
| 1544 | case LINUX_SIGBUS: |
| 1545 | return GDB_SIGNAL_BUS; |
| 1546 | |
| 1547 | case LINUX_SIGFPE: |
| 1548 | return GDB_SIGNAL_FPE; |
| 1549 | |
| 1550 | case LINUX_SIGKILL: |
| 1551 | return GDB_SIGNAL_KILL; |
| 1552 | |
| 1553 | case LINUX_SIGUSR1: |
| 1554 | return GDB_SIGNAL_USR1; |
| 1555 | |
| 1556 | case LINUX_SIGSEGV: |
| 1557 | return GDB_SIGNAL_SEGV; |
| 1558 | |
| 1559 | case LINUX_SIGUSR2: |
| 1560 | return GDB_SIGNAL_USR2; |
| 1561 | |
| 1562 | case LINUX_SIGPIPE: |
| 1563 | return GDB_SIGNAL_PIPE; |
| 1564 | |
| 1565 | case LINUX_SIGALRM: |
| 1566 | return GDB_SIGNAL_ALRM; |
| 1567 | |
| 1568 | case LINUX_SIGTERM: |
| 1569 | return GDB_SIGNAL_TERM; |
| 1570 | |
| 1571 | case LINUX_SIGCHLD: |
| 1572 | return GDB_SIGNAL_CHLD; |
| 1573 | |
| 1574 | case LINUX_SIGCONT: |
| 1575 | return GDB_SIGNAL_CONT; |
| 1576 | |
| 1577 | case LINUX_SIGSTOP: |
| 1578 | return GDB_SIGNAL_STOP; |
| 1579 | |
| 1580 | case LINUX_SIGTSTP: |
| 1581 | return GDB_SIGNAL_TSTP; |
| 1582 | |
| 1583 | case LINUX_SIGTTIN: |
| 1584 | return GDB_SIGNAL_TTIN; |
| 1585 | |
| 1586 | case LINUX_SIGTTOU: |
| 1587 | return GDB_SIGNAL_TTOU; |
| 1588 | |
| 1589 | case LINUX_SIGURG: |
| 1590 | return GDB_SIGNAL_URG; |
| 1591 | |
| 1592 | case LINUX_SIGXCPU: |
| 1593 | return GDB_SIGNAL_XCPU; |
| 1594 | |
| 1595 | case LINUX_SIGXFSZ: |
| 1596 | return GDB_SIGNAL_XFSZ; |
| 1597 | |
| 1598 | case LINUX_SIGVTALRM: |
| 1599 | return GDB_SIGNAL_VTALRM; |
| 1600 | |
| 1601 | case LINUX_SIGPROF: |
| 1602 | return GDB_SIGNAL_PROF; |
| 1603 | |
| 1604 | case LINUX_SIGWINCH: |
| 1605 | return GDB_SIGNAL_WINCH; |
| 1606 | |
| 1607 | /* No way to differentiate between SIGIO and SIGPOLL. |
| 1608 | Therefore, we just handle the first one. */ |
| 1609 | case LINUX_SIGIO: |
| 1610 | return GDB_SIGNAL_IO; |
| 1611 | |
| 1612 | case LINUX_SIGPWR: |
| 1613 | return GDB_SIGNAL_PWR; |
| 1614 | |
| 1615 | case LINUX_SIGSYS: |
| 1616 | return GDB_SIGNAL_SYS; |
| 1617 | |
| 1618 | /* SIGRTMIN and SIGRTMAX are not continuous in <gdb/signals.def>, |
| 1619 | therefore we have to handle them here. */ |
| 1620 | case LINUX_SIGRTMIN: |
| 1621 | return GDB_SIGNAL_REALTIME_32; |
| 1622 | |
| 1623 | case LINUX_SIGRTMAX: |
| 1624 | return GDB_SIGNAL_REALTIME_64; |
| 1625 | } |
| 1626 | |
| 1627 | if (signal >= LINUX_SIGRTMIN + 1 && signal <= LINUX_SIGRTMAX - 1) |
| 1628 | { |
| 1629 | int offset = signal - LINUX_SIGRTMIN + 1; |
| 1630 | |
| 1631 | return (enum gdb_signal) ((int) GDB_SIGNAL_REALTIME_33 + offset); |
| 1632 | } |
| 1633 | |
| 1634 | return GDB_SIGNAL_UNKNOWN; |
| 1635 | } |
| 1636 | |
| 1637 | /* Implementation of `gdbarch_gdb_signal_to_target', as defined in |
| 1638 | gdbarch.h. This function is not static because it is exported to |
| 1639 | other -tdep files. */ |
| 1640 | |
| 1641 | int |
| 1642 | linux_gdb_signal_to_target (struct gdbarch *gdbarch, |
| 1643 | enum gdb_signal signal) |
| 1644 | { |
| 1645 | switch (signal) |
| 1646 | { |
| 1647 | case GDB_SIGNAL_0: |
| 1648 | return 0; |
| 1649 | |
| 1650 | case GDB_SIGNAL_HUP: |
| 1651 | return LINUX_SIGHUP; |
| 1652 | |
| 1653 | case GDB_SIGNAL_INT: |
| 1654 | return LINUX_SIGINT; |
| 1655 | |
| 1656 | case GDB_SIGNAL_QUIT: |
| 1657 | return LINUX_SIGQUIT; |
| 1658 | |
| 1659 | case GDB_SIGNAL_ILL: |
| 1660 | return LINUX_SIGILL; |
| 1661 | |
| 1662 | case GDB_SIGNAL_TRAP: |
| 1663 | return LINUX_SIGTRAP; |
| 1664 | |
| 1665 | case GDB_SIGNAL_ABRT: |
| 1666 | return LINUX_SIGABRT; |
| 1667 | |
| 1668 | case GDB_SIGNAL_FPE: |
| 1669 | return LINUX_SIGFPE; |
| 1670 | |
| 1671 | case GDB_SIGNAL_KILL: |
| 1672 | return LINUX_SIGKILL; |
| 1673 | |
| 1674 | case GDB_SIGNAL_BUS: |
| 1675 | return LINUX_SIGBUS; |
| 1676 | |
| 1677 | case GDB_SIGNAL_SEGV: |
| 1678 | return LINUX_SIGSEGV; |
| 1679 | |
| 1680 | case GDB_SIGNAL_SYS: |
| 1681 | return LINUX_SIGSYS; |
| 1682 | |
| 1683 | case GDB_SIGNAL_PIPE: |
| 1684 | return LINUX_SIGPIPE; |
| 1685 | |
| 1686 | case GDB_SIGNAL_ALRM: |
| 1687 | return LINUX_SIGALRM; |
| 1688 | |
| 1689 | case GDB_SIGNAL_TERM: |
| 1690 | return LINUX_SIGTERM; |
| 1691 | |
| 1692 | case GDB_SIGNAL_URG: |
| 1693 | return LINUX_SIGURG; |
| 1694 | |
| 1695 | case GDB_SIGNAL_STOP: |
| 1696 | return LINUX_SIGSTOP; |
| 1697 | |
| 1698 | case GDB_SIGNAL_TSTP: |
| 1699 | return LINUX_SIGTSTP; |
| 1700 | |
| 1701 | case GDB_SIGNAL_CONT: |
| 1702 | return LINUX_SIGCONT; |
| 1703 | |
| 1704 | case GDB_SIGNAL_CHLD: |
| 1705 | return LINUX_SIGCHLD; |
| 1706 | |
| 1707 | case GDB_SIGNAL_TTIN: |
| 1708 | return LINUX_SIGTTIN; |
| 1709 | |
| 1710 | case GDB_SIGNAL_TTOU: |
| 1711 | return LINUX_SIGTTOU; |
| 1712 | |
| 1713 | case GDB_SIGNAL_IO: |
| 1714 | return LINUX_SIGIO; |
| 1715 | |
| 1716 | case GDB_SIGNAL_XCPU: |
| 1717 | return LINUX_SIGXCPU; |
| 1718 | |
| 1719 | case GDB_SIGNAL_XFSZ: |
| 1720 | return LINUX_SIGXFSZ; |
| 1721 | |
| 1722 | case GDB_SIGNAL_VTALRM: |
| 1723 | return LINUX_SIGVTALRM; |
| 1724 | |
| 1725 | case GDB_SIGNAL_PROF: |
| 1726 | return LINUX_SIGPROF; |
| 1727 | |
| 1728 | case GDB_SIGNAL_WINCH: |
| 1729 | return LINUX_SIGWINCH; |
| 1730 | |
| 1731 | case GDB_SIGNAL_USR1: |
| 1732 | return LINUX_SIGUSR1; |
| 1733 | |
| 1734 | case GDB_SIGNAL_USR2: |
| 1735 | return LINUX_SIGUSR2; |
| 1736 | |
| 1737 | case GDB_SIGNAL_PWR: |
| 1738 | return LINUX_SIGPWR; |
| 1739 | |
| 1740 | case GDB_SIGNAL_POLL: |
| 1741 | return LINUX_SIGPOLL; |
| 1742 | |
| 1743 | /* GDB_SIGNAL_REALTIME_32 is not continuous in <gdb/signals.def>, |
| 1744 | therefore we have to handle it here. */ |
| 1745 | case GDB_SIGNAL_REALTIME_32: |
| 1746 | return LINUX_SIGRTMIN; |
| 1747 | |
| 1748 | /* Same comment applies to _64. */ |
| 1749 | case GDB_SIGNAL_REALTIME_64: |
| 1750 | return LINUX_SIGRTMAX; |
| 1751 | } |
| 1752 | |
| 1753 | /* GDB_SIGNAL_REALTIME_33 to _64 are continuous. */ |
| 1754 | if (signal >= GDB_SIGNAL_REALTIME_33 |
| 1755 | && signal <= GDB_SIGNAL_REALTIME_63) |
| 1756 | { |
| 1757 | int offset = signal - GDB_SIGNAL_REALTIME_33; |
| 1758 | |
| 1759 | return LINUX_SIGRTMIN + 1 + offset; |
| 1760 | } |
| 1761 | |
| 1762 | return -1; |
| 1763 | } |
| 1764 | |
| 1765 | /* To be called from the various GDB_OSABI_LINUX handlers for the |
| 1766 | various GNU/Linux architectures and machine types. */ |
| 1767 | |
| 1768 | void |
| 1769 | linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) |
| 1770 | { |
| 1771 | set_gdbarch_core_pid_to_str (gdbarch, linux_core_pid_to_str); |
| 1772 | set_gdbarch_info_proc (gdbarch, linux_info_proc); |
| 1773 | set_gdbarch_core_info_proc (gdbarch, linux_core_info_proc); |
| 1774 | set_gdbarch_find_memory_regions (gdbarch, linux_find_memory_regions); |
| 1775 | set_gdbarch_make_corefile_notes (gdbarch, linux_make_corefile_notes_1); |
| 1776 | set_gdbarch_has_shared_address_space (gdbarch, |
| 1777 | linux_has_shared_address_space); |
| 1778 | set_gdbarch_gdb_signal_from_target (gdbarch, |
| 1779 | linux_gdb_signal_from_target); |
| 1780 | set_gdbarch_gdb_signal_to_target (gdbarch, |
| 1781 | linux_gdb_signal_to_target); |
| 1782 | } |
| 1783 | |
| 1784 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
| 1785 | extern initialize_file_ftype _initialize_linux_tdep; |
| 1786 | |
| 1787 | void |
| 1788 | _initialize_linux_tdep (void) |
| 1789 | { |
| 1790 | linux_gdbarch_data_handle = |
| 1791 | gdbarch_data_register_post_init (init_linux_gdbarch_data); |
| 1792 | } |