| 1 | /* Process record and replay target for GDB, the GNU debugger. |
| 2 | |
| 3 | Copyright (C) 2008-2016 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 "gdbcmd.h" |
| 22 | #include "completer.h" |
| 23 | #include "record.h" |
| 24 | #include "observer.h" |
| 25 | #include "inferior.h" |
| 26 | #include "common/common-utils.h" |
| 27 | #include "cli/cli-utils.h" |
| 28 | #include "disasm.h" |
| 29 | |
| 30 | #include <ctype.h> |
| 31 | |
| 32 | /* This is the debug switch for process record. */ |
| 33 | unsigned int record_debug = 0; |
| 34 | |
| 35 | /* The number of instructions to print in "record instruction-history". */ |
| 36 | static unsigned int record_insn_history_size = 10; |
| 37 | |
| 38 | /* The variable registered as control variable in the "record |
| 39 | instruction-history" command. Necessary for extra input |
| 40 | validation. */ |
| 41 | static unsigned int record_insn_history_size_setshow_var; |
| 42 | |
| 43 | /* The number of functions to print in "record function-call-history". */ |
| 44 | static unsigned int record_call_history_size = 10; |
| 45 | |
| 46 | /* The variable registered as control variable in the "record |
| 47 | call-history" command. Necessary for extra input validation. */ |
| 48 | static unsigned int record_call_history_size_setshow_var; |
| 49 | |
| 50 | struct cmd_list_element *record_cmdlist = NULL; |
| 51 | struct cmd_list_element *record_goto_cmdlist = NULL; |
| 52 | struct cmd_list_element *set_record_cmdlist = NULL; |
| 53 | struct cmd_list_element *show_record_cmdlist = NULL; |
| 54 | struct cmd_list_element *info_record_cmdlist = NULL; |
| 55 | |
| 56 | #define DEBUG(msg, args...) \ |
| 57 | if (record_debug) \ |
| 58 | fprintf_unfiltered (gdb_stdlog, "record: " msg "\n", ##args) |
| 59 | |
| 60 | /* See record.h. */ |
| 61 | |
| 62 | struct target_ops * |
| 63 | find_record_target (void) |
| 64 | { |
| 65 | return find_target_at (record_stratum); |
| 66 | } |
| 67 | |
| 68 | /* Check that recording is active. Throw an error, if it isn't. */ |
| 69 | |
| 70 | static struct target_ops * |
| 71 | require_record_target (void) |
| 72 | { |
| 73 | struct target_ops *t; |
| 74 | |
| 75 | t = find_record_target (); |
| 76 | if (t == NULL) |
| 77 | error (_("No record target is currently active.\n" |
| 78 | "Use one of the \"target record-<tab><tab>\" commands first.")); |
| 79 | |
| 80 | return t; |
| 81 | } |
| 82 | |
| 83 | /* See record.h. */ |
| 84 | |
| 85 | void |
| 86 | record_preopen (void) |
| 87 | { |
| 88 | /* Check if a record target is already running. */ |
| 89 | if (find_record_target () != NULL) |
| 90 | error (_("The process is already being recorded. Use \"record stop\" to " |
| 91 | "stop recording first.")); |
| 92 | } |
| 93 | |
| 94 | /* See record.h. */ |
| 95 | |
| 96 | int |
| 97 | record_read_memory (struct gdbarch *gdbarch, |
| 98 | CORE_ADDR memaddr, gdb_byte *myaddr, |
| 99 | ssize_t len) |
| 100 | { |
| 101 | int ret = target_read_memory (memaddr, myaddr, len); |
| 102 | |
| 103 | if (ret != 0) |
| 104 | DEBUG ("error reading memory at addr %s len = %ld.\n", |
| 105 | paddress (gdbarch, memaddr), (long) len); |
| 106 | |
| 107 | return ret; |
| 108 | } |
| 109 | |
| 110 | /* Stop recording. */ |
| 111 | |
| 112 | static void |
| 113 | record_stop (struct target_ops *t) |
| 114 | { |
| 115 | DEBUG ("stop %s", t->to_shortname); |
| 116 | |
| 117 | t->to_stop_recording (t); |
| 118 | } |
| 119 | |
| 120 | /* Unpush the record target. */ |
| 121 | |
| 122 | static void |
| 123 | record_unpush (struct target_ops *t) |
| 124 | { |
| 125 | DEBUG ("unpush %s", t->to_shortname); |
| 126 | |
| 127 | unpush_target (t); |
| 128 | } |
| 129 | |
| 130 | /* See record.h. */ |
| 131 | |
| 132 | void |
| 133 | record_disconnect (struct target_ops *t, const char *args, int from_tty) |
| 134 | { |
| 135 | gdb_assert (t->to_stratum == record_stratum); |
| 136 | |
| 137 | DEBUG ("disconnect %s", t->to_shortname); |
| 138 | |
| 139 | record_stop (t); |
| 140 | record_unpush (t); |
| 141 | |
| 142 | target_disconnect (args, from_tty); |
| 143 | } |
| 144 | |
| 145 | /* See record.h. */ |
| 146 | |
| 147 | void |
| 148 | record_detach (struct target_ops *t, const char *args, int from_tty) |
| 149 | { |
| 150 | gdb_assert (t->to_stratum == record_stratum); |
| 151 | |
| 152 | DEBUG ("detach %s", t->to_shortname); |
| 153 | |
| 154 | record_stop (t); |
| 155 | record_unpush (t); |
| 156 | |
| 157 | target_detach (args, from_tty); |
| 158 | } |
| 159 | |
| 160 | /* See record.h. */ |
| 161 | |
| 162 | void |
| 163 | record_mourn_inferior (struct target_ops *t) |
| 164 | { |
| 165 | gdb_assert (t->to_stratum == record_stratum); |
| 166 | |
| 167 | DEBUG ("mourn inferior %s", t->to_shortname); |
| 168 | |
| 169 | /* It is safer to not stop recording. Resources will be freed when |
| 170 | threads are discarded. */ |
| 171 | record_unpush (t); |
| 172 | |
| 173 | target_mourn_inferior (inferior_ptid); |
| 174 | } |
| 175 | |
| 176 | /* See record.h. */ |
| 177 | |
| 178 | void |
| 179 | record_kill (struct target_ops *t) |
| 180 | { |
| 181 | gdb_assert (t->to_stratum == record_stratum); |
| 182 | |
| 183 | DEBUG ("kill %s", t->to_shortname); |
| 184 | |
| 185 | /* It is safer to not stop recording. Resources will be freed when |
| 186 | threads are discarded. */ |
| 187 | record_unpush (t); |
| 188 | |
| 189 | target_kill (); |
| 190 | } |
| 191 | |
| 192 | /* See record.h. */ |
| 193 | |
| 194 | int |
| 195 | record_check_stopped_by_breakpoint (struct address_space *aspace, CORE_ADDR pc, |
| 196 | enum target_stop_reason *reason) |
| 197 | { |
| 198 | if (breakpoint_inserted_here_p (aspace, pc)) |
| 199 | { |
| 200 | if (hardware_breakpoint_inserted_here_p (aspace, pc)) |
| 201 | *reason = TARGET_STOPPED_BY_HW_BREAKPOINT; |
| 202 | else |
| 203 | *reason = TARGET_STOPPED_BY_SW_BREAKPOINT; |
| 204 | return 1; |
| 205 | } |
| 206 | |
| 207 | *reason = TARGET_STOPPED_BY_NO_REASON; |
| 208 | return 0; |
| 209 | } |
| 210 | |
| 211 | /* Implement "show record debug" command. */ |
| 212 | |
| 213 | static void |
| 214 | show_record_debug (struct ui_file *file, int from_tty, |
| 215 | struct cmd_list_element *c, const char *value) |
| 216 | { |
| 217 | fprintf_filtered (file, _("Debugging of process record target is %s.\n"), |
| 218 | value); |
| 219 | } |
| 220 | |
| 221 | /* Alias for "target record". */ |
| 222 | |
| 223 | static void |
| 224 | cmd_record_start (char *args, int from_tty) |
| 225 | { |
| 226 | execute_command ("target record-full", from_tty); |
| 227 | } |
| 228 | |
| 229 | /* Truncate the record log from the present point |
| 230 | of replay until the end. */ |
| 231 | |
| 232 | static void |
| 233 | cmd_record_delete (char *args, int from_tty) |
| 234 | { |
| 235 | require_record_target (); |
| 236 | |
| 237 | if (!target_record_is_replaying (inferior_ptid)) |
| 238 | { |
| 239 | printf_unfiltered (_("Already at end of record list.\n")); |
| 240 | return; |
| 241 | } |
| 242 | |
| 243 | if (!target_supports_delete_record ()) |
| 244 | { |
| 245 | printf_unfiltered (_("The current record target does not support " |
| 246 | "this operation.\n")); |
| 247 | return; |
| 248 | } |
| 249 | |
| 250 | if (!from_tty || query (_("Delete the log from this point forward " |
| 251 | "and begin to record the running message " |
| 252 | "at current PC?"))) |
| 253 | target_delete_record (); |
| 254 | } |
| 255 | |
| 256 | /* Implement the "stoprecord" or "record stop" command. */ |
| 257 | |
| 258 | static void |
| 259 | cmd_record_stop (char *args, int from_tty) |
| 260 | { |
| 261 | struct target_ops *t; |
| 262 | |
| 263 | t = require_record_target (); |
| 264 | |
| 265 | record_stop (t); |
| 266 | record_unpush (t); |
| 267 | |
| 268 | printf_unfiltered (_("Process record is stopped and all execution " |
| 269 | "logs are deleted.\n")); |
| 270 | |
| 271 | observer_notify_record_changed (current_inferior (), 0, NULL, NULL); |
| 272 | } |
| 273 | |
| 274 | /* The "set record" command. */ |
| 275 | |
| 276 | static void |
| 277 | set_record_command (char *args, int from_tty) |
| 278 | { |
| 279 | printf_unfiltered (_("\"set record\" must be followed " |
| 280 | "by an apporpriate subcommand.\n")); |
| 281 | help_list (set_record_cmdlist, "set record ", all_commands, gdb_stdout); |
| 282 | } |
| 283 | |
| 284 | /* The "show record" command. */ |
| 285 | |
| 286 | static void |
| 287 | show_record_command (char *args, int from_tty) |
| 288 | { |
| 289 | cmd_show_list (show_record_cmdlist, from_tty, ""); |
| 290 | } |
| 291 | |
| 292 | /* The "info record" command. */ |
| 293 | |
| 294 | static void |
| 295 | info_record_command (char *args, int from_tty) |
| 296 | { |
| 297 | struct target_ops *t; |
| 298 | |
| 299 | t = find_record_target (); |
| 300 | if (t == NULL) |
| 301 | { |
| 302 | printf_filtered (_("No record target is currently active.\n")); |
| 303 | return; |
| 304 | } |
| 305 | |
| 306 | printf_filtered (_("Active record target: %s\n"), t->to_shortname); |
| 307 | t->to_info_record (t); |
| 308 | } |
| 309 | |
| 310 | /* The "record save" command. */ |
| 311 | |
| 312 | static void |
| 313 | cmd_record_save (char *args, int from_tty) |
| 314 | { |
| 315 | char *recfilename, recfilename_buffer[40]; |
| 316 | |
| 317 | require_record_target (); |
| 318 | |
| 319 | if (args != NULL && *args != 0) |
| 320 | recfilename = args; |
| 321 | else |
| 322 | { |
| 323 | /* Default recfile name is "gdb_record.PID". */ |
| 324 | xsnprintf (recfilename_buffer, sizeof (recfilename_buffer), |
| 325 | "gdb_record.%d", ptid_get_pid (inferior_ptid)); |
| 326 | recfilename = recfilename_buffer; |
| 327 | } |
| 328 | |
| 329 | target_save_record (recfilename); |
| 330 | } |
| 331 | |
| 332 | /* See record.h. */ |
| 333 | |
| 334 | void |
| 335 | record_goto (const char *arg) |
| 336 | { |
| 337 | ULONGEST insn; |
| 338 | |
| 339 | if (arg == NULL || *arg == '\0') |
| 340 | error (_("Command requires an argument (insn number to go to).")); |
| 341 | |
| 342 | insn = parse_and_eval_long (arg); |
| 343 | |
| 344 | require_record_target (); |
| 345 | target_goto_record (insn); |
| 346 | } |
| 347 | |
| 348 | /* "record goto" command. Argument is an instruction number, |
| 349 | as given by "info record". |
| 350 | |
| 351 | Rewinds the recording (forward or backward) to the given instruction. */ |
| 352 | |
| 353 | static void |
| 354 | cmd_record_goto (char *arg, int from_tty) |
| 355 | { |
| 356 | record_goto (arg); |
| 357 | } |
| 358 | |
| 359 | /* The "record goto begin" command. */ |
| 360 | |
| 361 | static void |
| 362 | cmd_record_goto_begin (char *arg, int from_tty) |
| 363 | { |
| 364 | if (arg != NULL && *arg != '\0') |
| 365 | error (_("Junk after argument: %s."), arg); |
| 366 | |
| 367 | require_record_target (); |
| 368 | target_goto_record_begin (); |
| 369 | } |
| 370 | |
| 371 | /* The "record goto end" command. */ |
| 372 | |
| 373 | static void |
| 374 | cmd_record_goto_end (char *arg, int from_tty) |
| 375 | { |
| 376 | if (arg != NULL && *arg != '\0') |
| 377 | error (_("Junk after argument: %s."), arg); |
| 378 | |
| 379 | require_record_target (); |
| 380 | target_goto_record_end (); |
| 381 | } |
| 382 | |
| 383 | /* Read an instruction number from an argument string. */ |
| 384 | |
| 385 | static ULONGEST |
| 386 | get_insn_number (char **arg) |
| 387 | { |
| 388 | ULONGEST number; |
| 389 | const char *begin, *end, *pos; |
| 390 | |
| 391 | begin = *arg; |
| 392 | pos = skip_spaces_const (begin); |
| 393 | |
| 394 | if (!isdigit (*pos)) |
| 395 | error (_("Expected positive number, got: %s."), pos); |
| 396 | |
| 397 | number = strtoulst (pos, &end, 10); |
| 398 | |
| 399 | *arg += (end - begin); |
| 400 | |
| 401 | return number; |
| 402 | } |
| 403 | |
| 404 | /* Read a context size from an argument string. */ |
| 405 | |
| 406 | static int |
| 407 | get_context_size (char **arg) |
| 408 | { |
| 409 | char *pos; |
| 410 | int number; |
| 411 | |
| 412 | pos = skip_spaces (*arg); |
| 413 | |
| 414 | if (!isdigit (*pos)) |
| 415 | error (_("Expected positive number, got: %s."), pos); |
| 416 | |
| 417 | return strtol (pos, arg, 10); |
| 418 | } |
| 419 | |
| 420 | /* Complain about junk at the end of an argument string. */ |
| 421 | |
| 422 | static void |
| 423 | no_chunk (char *arg) |
| 424 | { |
| 425 | if (*arg != 0) |
| 426 | error (_("Junk after argument: %s."), arg); |
| 427 | } |
| 428 | |
| 429 | /* Read instruction-history modifiers from an argument string. */ |
| 430 | |
| 431 | static int |
| 432 | get_insn_history_modifiers (char **arg) |
| 433 | { |
| 434 | int modifiers; |
| 435 | char *args; |
| 436 | |
| 437 | modifiers = 0; |
| 438 | args = *arg; |
| 439 | |
| 440 | if (args == NULL) |
| 441 | return modifiers; |
| 442 | |
| 443 | while (*args == '/') |
| 444 | { |
| 445 | ++args; |
| 446 | |
| 447 | if (*args == '\0') |
| 448 | error (_("Missing modifier.")); |
| 449 | |
| 450 | for (; *args; ++args) |
| 451 | { |
| 452 | if (isspace (*args)) |
| 453 | break; |
| 454 | |
| 455 | if (*args == '/') |
| 456 | continue; |
| 457 | |
| 458 | switch (*args) |
| 459 | { |
| 460 | case 'm': |
| 461 | case 's': |
| 462 | modifiers |= DISASSEMBLY_SOURCE; |
| 463 | modifiers |= DISASSEMBLY_FILENAME; |
| 464 | break; |
| 465 | case 'r': |
| 466 | modifiers |= DISASSEMBLY_RAW_INSN; |
| 467 | break; |
| 468 | case 'f': |
| 469 | modifiers |= DISASSEMBLY_OMIT_FNAME; |
| 470 | break; |
| 471 | case 'p': |
| 472 | modifiers |= DISASSEMBLY_OMIT_PC; |
| 473 | break; |
| 474 | default: |
| 475 | error (_("Invalid modifier: %c."), *args); |
| 476 | } |
| 477 | } |
| 478 | |
| 479 | args = skip_spaces (args); |
| 480 | } |
| 481 | |
| 482 | /* Update the argument string. */ |
| 483 | *arg = args; |
| 484 | |
| 485 | return modifiers; |
| 486 | } |
| 487 | |
| 488 | /* The "set record instruction-history-size / set record |
| 489 | function-call-history-size" commands are unsigned, with UINT_MAX |
| 490 | meaning unlimited. The target interfaces works with signed int |
| 491 | though, to indicate direction, so map "unlimited" to INT_MAX, which |
| 492 | is about the same as unlimited in practice. If the user does have |
| 493 | a log that huge, she can fetch it in chunks across several requests, |
| 494 | but she'll likely have other problems first... */ |
| 495 | |
| 496 | static int |
| 497 | command_size_to_target_size (unsigned int size) |
| 498 | { |
| 499 | gdb_assert (size <= INT_MAX || size == UINT_MAX); |
| 500 | |
| 501 | if (size == UINT_MAX) |
| 502 | return INT_MAX; |
| 503 | else |
| 504 | return size; |
| 505 | } |
| 506 | |
| 507 | /* The "record instruction-history" command. */ |
| 508 | |
| 509 | static void |
| 510 | cmd_record_insn_history (char *arg, int from_tty) |
| 511 | { |
| 512 | int flags, size; |
| 513 | |
| 514 | require_record_target (); |
| 515 | |
| 516 | flags = get_insn_history_modifiers (&arg); |
| 517 | |
| 518 | size = command_size_to_target_size (record_insn_history_size); |
| 519 | |
| 520 | if (arg == NULL || *arg == 0 || strcmp (arg, "+") == 0) |
| 521 | target_insn_history (size, flags); |
| 522 | else if (strcmp (arg, "-") == 0) |
| 523 | target_insn_history (-size, flags); |
| 524 | else |
| 525 | { |
| 526 | ULONGEST begin, end; |
| 527 | |
| 528 | begin = get_insn_number (&arg); |
| 529 | |
| 530 | if (*arg == ',') |
| 531 | { |
| 532 | arg = skip_spaces (++arg); |
| 533 | |
| 534 | if (*arg == '+') |
| 535 | { |
| 536 | arg += 1; |
| 537 | size = get_context_size (&arg); |
| 538 | |
| 539 | no_chunk (arg); |
| 540 | |
| 541 | target_insn_history_from (begin, size, flags); |
| 542 | } |
| 543 | else if (*arg == '-') |
| 544 | { |
| 545 | arg += 1; |
| 546 | size = get_context_size (&arg); |
| 547 | |
| 548 | no_chunk (arg); |
| 549 | |
| 550 | target_insn_history_from (begin, -size, flags); |
| 551 | } |
| 552 | else |
| 553 | { |
| 554 | end = get_insn_number (&arg); |
| 555 | |
| 556 | no_chunk (arg); |
| 557 | |
| 558 | target_insn_history_range (begin, end, flags); |
| 559 | } |
| 560 | } |
| 561 | else |
| 562 | { |
| 563 | no_chunk (arg); |
| 564 | |
| 565 | target_insn_history_from (begin, size, flags); |
| 566 | } |
| 567 | |
| 568 | dont_repeat (); |
| 569 | } |
| 570 | } |
| 571 | |
| 572 | /* Read function-call-history modifiers from an argument string. */ |
| 573 | |
| 574 | static int |
| 575 | get_call_history_modifiers (char **arg) |
| 576 | { |
| 577 | int modifiers; |
| 578 | char *args; |
| 579 | |
| 580 | modifiers = 0; |
| 581 | args = *arg; |
| 582 | |
| 583 | if (args == NULL) |
| 584 | return modifiers; |
| 585 | |
| 586 | while (*args == '/') |
| 587 | { |
| 588 | ++args; |
| 589 | |
| 590 | if (*args == '\0') |
| 591 | error (_("Missing modifier.")); |
| 592 | |
| 593 | for (; *args; ++args) |
| 594 | { |
| 595 | if (isspace (*args)) |
| 596 | break; |
| 597 | |
| 598 | if (*args == '/') |
| 599 | continue; |
| 600 | |
| 601 | switch (*args) |
| 602 | { |
| 603 | case 'l': |
| 604 | modifiers |= RECORD_PRINT_SRC_LINE; |
| 605 | break; |
| 606 | case 'i': |
| 607 | modifiers |= RECORD_PRINT_INSN_RANGE; |
| 608 | break; |
| 609 | case 'c': |
| 610 | modifiers |= RECORD_PRINT_INDENT_CALLS; |
| 611 | break; |
| 612 | default: |
| 613 | error (_("Invalid modifier: %c."), *args); |
| 614 | } |
| 615 | } |
| 616 | |
| 617 | args = skip_spaces (args); |
| 618 | } |
| 619 | |
| 620 | /* Update the argument string. */ |
| 621 | *arg = args; |
| 622 | |
| 623 | return modifiers; |
| 624 | } |
| 625 | |
| 626 | /* The "record function-call-history" command. */ |
| 627 | |
| 628 | static void |
| 629 | cmd_record_call_history (char *arg, int from_tty) |
| 630 | { |
| 631 | int flags, size; |
| 632 | |
| 633 | require_record_target (); |
| 634 | |
| 635 | flags = get_call_history_modifiers (&arg); |
| 636 | |
| 637 | size = command_size_to_target_size (record_call_history_size); |
| 638 | |
| 639 | if (arg == NULL || *arg == 0 || strcmp (arg, "+") == 0) |
| 640 | target_call_history (size, flags); |
| 641 | else if (strcmp (arg, "-") == 0) |
| 642 | target_call_history (-size, flags); |
| 643 | else |
| 644 | { |
| 645 | ULONGEST begin, end; |
| 646 | |
| 647 | begin = get_insn_number (&arg); |
| 648 | |
| 649 | if (*arg == ',') |
| 650 | { |
| 651 | arg = skip_spaces (++arg); |
| 652 | |
| 653 | if (*arg == '+') |
| 654 | { |
| 655 | arg += 1; |
| 656 | size = get_context_size (&arg); |
| 657 | |
| 658 | no_chunk (arg); |
| 659 | |
| 660 | target_call_history_from (begin, size, flags); |
| 661 | } |
| 662 | else if (*arg == '-') |
| 663 | { |
| 664 | arg += 1; |
| 665 | size = get_context_size (&arg); |
| 666 | |
| 667 | no_chunk (arg); |
| 668 | |
| 669 | target_call_history_from (begin, -size, flags); |
| 670 | } |
| 671 | else |
| 672 | { |
| 673 | end = get_insn_number (&arg); |
| 674 | |
| 675 | no_chunk (arg); |
| 676 | |
| 677 | target_call_history_range (begin, end, flags); |
| 678 | } |
| 679 | } |
| 680 | else |
| 681 | { |
| 682 | no_chunk (arg); |
| 683 | |
| 684 | target_call_history_from (begin, size, flags); |
| 685 | } |
| 686 | |
| 687 | dont_repeat (); |
| 688 | } |
| 689 | } |
| 690 | |
| 691 | /* Helper for "set record instruction-history-size" and "set record |
| 692 | function-call-history-size" input validation. COMMAND_VAR is the |
| 693 | variable registered in the command as control variable. *SETTING |
| 694 | is the real setting the command allows changing. */ |
| 695 | |
| 696 | static void |
| 697 | validate_history_size (unsigned int *command_var, unsigned int *setting) |
| 698 | { |
| 699 | if (*command_var != UINT_MAX && *command_var > INT_MAX) |
| 700 | { |
| 701 | unsigned int new_value = *command_var; |
| 702 | |
| 703 | /* Restore previous value. */ |
| 704 | *command_var = *setting; |
| 705 | error (_("integer %u out of range"), new_value); |
| 706 | } |
| 707 | |
| 708 | /* Commit new value. */ |
| 709 | *setting = *command_var; |
| 710 | } |
| 711 | |
| 712 | /* Called by do_setshow_command. We only want values in the |
| 713 | [0..INT_MAX] range, while the command's machinery accepts |
| 714 | [0..UINT_MAX]. See command_size_to_target_size. */ |
| 715 | |
| 716 | static void |
| 717 | set_record_insn_history_size (char *args, int from_tty, |
| 718 | struct cmd_list_element *c) |
| 719 | { |
| 720 | validate_history_size (&record_insn_history_size_setshow_var, |
| 721 | &record_insn_history_size); |
| 722 | } |
| 723 | |
| 724 | /* Called by do_setshow_command. We only want values in the |
| 725 | [0..INT_MAX] range, while the command's machinery accepts |
| 726 | [0..UINT_MAX]. See command_size_to_target_size. */ |
| 727 | |
| 728 | static void |
| 729 | set_record_call_history_size (char *args, int from_tty, |
| 730 | struct cmd_list_element *c) |
| 731 | { |
| 732 | validate_history_size (&record_call_history_size_setshow_var, |
| 733 | &record_call_history_size); |
| 734 | } |
| 735 | |
| 736 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
| 737 | extern initialize_file_ftype _initialize_record; |
| 738 | |
| 739 | void |
| 740 | _initialize_record (void) |
| 741 | { |
| 742 | struct cmd_list_element *c; |
| 743 | |
| 744 | add_setshow_zuinteger_cmd ("record", no_class, &record_debug, |
| 745 | _("Set debugging of record/replay feature."), |
| 746 | _("Show debugging of record/replay feature."), |
| 747 | _("When enabled, debugging output for " |
| 748 | "record/replay feature is displayed."), |
| 749 | NULL, show_record_debug, &setdebuglist, |
| 750 | &showdebuglist); |
| 751 | |
| 752 | add_setshow_uinteger_cmd ("instruction-history-size", no_class, |
| 753 | &record_insn_history_size_setshow_var, _("\ |
| 754 | Set number of instructions to print in \"record instruction-history\"."), _("\ |
| 755 | Show number of instructions to print in \"record instruction-history\"."), _("\ |
| 756 | A size of \"unlimited\" means unlimited instructions. The default is 10."), |
| 757 | set_record_insn_history_size, NULL, |
| 758 | &set_record_cmdlist, &show_record_cmdlist); |
| 759 | |
| 760 | add_setshow_uinteger_cmd ("function-call-history-size", no_class, |
| 761 | &record_call_history_size_setshow_var, _("\ |
| 762 | Set number of function to print in \"record function-call-history\"."), _("\ |
| 763 | Show number of functions to print in \"record function-call-history\"."), _("\ |
| 764 | A size of \"unlimited\" means unlimited lines. The default is 10."), |
| 765 | set_record_call_history_size, NULL, |
| 766 | &set_record_cmdlist, &show_record_cmdlist); |
| 767 | |
| 768 | c = add_prefix_cmd ("record", class_obscure, cmd_record_start, |
| 769 | _("Start recording."), |
| 770 | &record_cmdlist, "record ", 0, &cmdlist); |
| 771 | set_cmd_completer (c, filename_completer); |
| 772 | |
| 773 | add_com_alias ("rec", "record", class_obscure, 1); |
| 774 | add_prefix_cmd ("record", class_support, set_record_command, |
| 775 | _("Set record options"), &set_record_cmdlist, |
| 776 | "set record ", 0, &setlist); |
| 777 | add_alias_cmd ("rec", "record", class_obscure, 1, &setlist); |
| 778 | add_prefix_cmd ("record", class_support, show_record_command, |
| 779 | _("Show record options"), &show_record_cmdlist, |
| 780 | "show record ", 0, &showlist); |
| 781 | add_alias_cmd ("rec", "record", class_obscure, 1, &showlist); |
| 782 | add_prefix_cmd ("record", class_support, info_record_command, |
| 783 | _("Info record options"), &info_record_cmdlist, |
| 784 | "info record ", 0, &infolist); |
| 785 | add_alias_cmd ("rec", "record", class_obscure, 1, &infolist); |
| 786 | |
| 787 | c = add_cmd ("save", class_obscure, cmd_record_save, |
| 788 | _("Save the execution log to a file.\n\ |
| 789 | Argument is optional filename.\n\ |
| 790 | Default filename is 'gdb_record.<process_id>'."), |
| 791 | &record_cmdlist); |
| 792 | set_cmd_completer (c, filename_completer); |
| 793 | |
| 794 | add_cmd ("delete", class_obscure, cmd_record_delete, |
| 795 | _("Delete the rest of execution log and start recording it anew."), |
| 796 | &record_cmdlist); |
| 797 | add_alias_cmd ("d", "delete", class_obscure, 1, &record_cmdlist); |
| 798 | add_alias_cmd ("del", "delete", class_obscure, 1, &record_cmdlist); |
| 799 | |
| 800 | add_cmd ("stop", class_obscure, cmd_record_stop, |
| 801 | _("Stop the record/replay target."), |
| 802 | &record_cmdlist); |
| 803 | add_alias_cmd ("s", "stop", class_obscure, 1, &record_cmdlist); |
| 804 | |
| 805 | add_prefix_cmd ("goto", class_obscure, cmd_record_goto, _("\ |
| 806 | Restore the program to its state at instruction number N.\n\ |
| 807 | Argument is instruction number, as shown by 'info record'."), |
| 808 | &record_goto_cmdlist, "record goto ", 1, &record_cmdlist); |
| 809 | |
| 810 | add_cmd ("begin", class_obscure, cmd_record_goto_begin, |
| 811 | _("Go to the beginning of the execution log."), |
| 812 | &record_goto_cmdlist); |
| 813 | add_alias_cmd ("start", "begin", class_obscure, 1, &record_goto_cmdlist); |
| 814 | |
| 815 | add_cmd ("end", class_obscure, cmd_record_goto_end, |
| 816 | _("Go to the end of the execution log."), |
| 817 | &record_goto_cmdlist); |
| 818 | |
| 819 | add_cmd ("instruction-history", class_obscure, cmd_record_insn_history, _("\ |
| 820 | Print disassembled instructions stored in the execution log.\n\ |
| 821 | With a /m or /s modifier, source lines are included (if available).\n\ |
| 822 | With a /r modifier, raw instructions in hex are included.\n\ |
| 823 | With a /f modifier, function names are omitted.\n\ |
| 824 | With a /p modifier, current position markers are omitted.\n\ |
| 825 | With no argument, disassembles ten more instructions after the previous \ |
| 826 | disassembly.\n\ |
| 827 | \"record instruction-history -\" disassembles ten instructions before a \ |
| 828 | previous disassembly.\n\ |
| 829 | One argument specifies an instruction number as shown by 'info record', and \ |
| 830 | ten instructions are disassembled after that instruction.\n\ |
| 831 | Two arguments with comma between them specify starting and ending instruction \ |
| 832 | numbers to disassemble.\n\ |
| 833 | If the second argument is preceded by '+' or '-', it specifies the distance \ |
| 834 | from the first argument.\n\ |
| 835 | The number of instructions to disassemble can be defined with \"set record \ |
| 836 | instruction-history-size\"."), |
| 837 | &record_cmdlist); |
| 838 | |
| 839 | add_cmd ("function-call-history", class_obscure, cmd_record_call_history, _("\ |
| 840 | Prints the execution history at function granularity.\n\ |
| 841 | It prints one line for each sequence of instructions that belong to the same \ |
| 842 | function.\n\ |
| 843 | Without modifiers, it prints the function name.\n\ |
| 844 | With a /l modifier, the source file and line number range is included.\n\ |
| 845 | With a /i modifier, the instruction number range is included.\n\ |
| 846 | With a /c modifier, the output is indented based on the call stack depth.\n\ |
| 847 | With no argument, prints ten more lines after the previous ten-line print.\n\ |
| 848 | \"record function-call-history -\" prints ten lines before a previous ten-line \ |
| 849 | print.\n\ |
| 850 | One argument specifies a function number as shown by 'info record', and \ |
| 851 | ten lines are printed after that function.\n\ |
| 852 | Two arguments with comma between them specify a range of functions to print.\n\ |
| 853 | If the second argument is preceded by '+' or '-', it specifies the distance \ |
| 854 | from the first argument.\n\ |
| 855 | The number of functions to print can be defined with \"set record \ |
| 856 | function-call-history-size\"."), |
| 857 | &record_cmdlist); |
| 858 | |
| 859 | /* Sync command control variables. */ |
| 860 | record_insn_history_size_setshow_var = record_insn_history_size; |
| 861 | record_call_history_size_setshow_var = record_call_history_size; |
| 862 | } |