| 1 | /* Memory-access and commands for "inferior" process, for GDB. |
| 2 | |
| 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
| 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
| 5 | 2008, 2009, 2010, 2011 Free Software Foundation, Inc. |
| 6 | |
| 7 | This file is part of GDB. |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 3 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 21 | |
| 22 | #include "defs.h" |
| 23 | #include "arch-utils.h" |
| 24 | #include <signal.h> |
| 25 | #include "gdb_string.h" |
| 26 | #include "symtab.h" |
| 27 | #include "gdbtypes.h" |
| 28 | #include "frame.h" |
| 29 | #include "inferior.h" |
| 30 | #include "environ.h" |
| 31 | #include "value.h" |
| 32 | #include "gdbcmd.h" |
| 33 | #include "symfile.h" |
| 34 | #include "gdbcore.h" |
| 35 | #include "target.h" |
| 36 | #include "language.h" |
| 37 | #include "symfile.h" |
| 38 | #include "objfiles.h" |
| 39 | #include "completer.h" |
| 40 | #include "ui-out.h" |
| 41 | #include "event-top.h" |
| 42 | #include "parser-defs.h" |
| 43 | #include "regcache.h" |
| 44 | #include "reggroups.h" |
| 45 | #include "block.h" |
| 46 | #include "solib.h" |
| 47 | #include <ctype.h> |
| 48 | #include "gdb_assert.h" |
| 49 | #include "observer.h" |
| 50 | #include "target-descriptions.h" |
| 51 | #include "user-regs.h" |
| 52 | #include "exceptions.h" |
| 53 | #include "cli/cli-decode.h" |
| 54 | #include "gdbthread.h" |
| 55 | #include "valprint.h" |
| 56 | #include "inline-frame.h" |
| 57 | #include "tracepoint.h" |
| 58 | |
| 59 | /* Functions exported for general use, in inferior.h: */ |
| 60 | |
| 61 | void all_registers_info (char *, int); |
| 62 | |
| 63 | void registers_info (char *, int); |
| 64 | |
| 65 | void nexti_command (char *, int); |
| 66 | |
| 67 | void stepi_command (char *, int); |
| 68 | |
| 69 | void continue_command (char *, int); |
| 70 | |
| 71 | void interrupt_target_command (char *args, int from_tty); |
| 72 | |
| 73 | /* Local functions: */ |
| 74 | |
| 75 | static void nofp_registers_info (char *, int); |
| 76 | |
| 77 | static void print_return_value (struct type *func_type, |
| 78 | struct type *value_type); |
| 79 | |
| 80 | static void until_next_command (int); |
| 81 | |
| 82 | static void until_command (char *, int); |
| 83 | |
| 84 | static void path_info (char *, int); |
| 85 | |
| 86 | static void path_command (char *, int); |
| 87 | |
| 88 | static void unset_command (char *, int); |
| 89 | |
| 90 | static void float_info (char *, int); |
| 91 | |
| 92 | static void disconnect_command (char *, int); |
| 93 | |
| 94 | static void unset_environment_command (char *, int); |
| 95 | |
| 96 | static void set_environment_command (char *, int); |
| 97 | |
| 98 | static void environment_info (char *, int); |
| 99 | |
| 100 | static void program_info (char *, int); |
| 101 | |
| 102 | static void finish_command (char *, int); |
| 103 | |
| 104 | static void signal_command (char *, int); |
| 105 | |
| 106 | static void jump_command (char *, int); |
| 107 | |
| 108 | static void step_1 (int, int, char *); |
| 109 | static void step_once (int skip_subroutines, int single_inst, |
| 110 | int count, int thread); |
| 111 | |
| 112 | static void next_command (char *, int); |
| 113 | |
| 114 | static void step_command (char *, int); |
| 115 | |
| 116 | static void run_command (char *, int); |
| 117 | |
| 118 | static void run_no_args_command (char *args, int from_tty); |
| 119 | |
| 120 | static void go_command (char *line_no, int from_tty); |
| 121 | |
| 122 | static int strip_bg_char (char **); |
| 123 | |
| 124 | void _initialize_infcmd (void); |
| 125 | |
| 126 | #define ERROR_NO_INFERIOR \ |
| 127 | if (!target_has_execution) error (_("The program is not being run.")); |
| 128 | |
| 129 | /* Scratch area where string containing arguments to give to the |
| 130 | program will be stored by 'set args'. As soon as anything is |
| 131 | stored, notice_args_set will move it into per-inferior storage. |
| 132 | Arguments are separated by spaces. Empty string (pointer to '\0') |
| 133 | means no args. */ |
| 134 | |
| 135 | static char *inferior_args_scratch; |
| 136 | |
| 137 | /* Scratch area where 'set inferior-tty' will store user-provided value. |
| 138 | We'll immediate copy it into per-inferior storage. */ |
| 139 | |
| 140 | static char *inferior_io_terminal_scratch; |
| 141 | |
| 142 | /* Pid of our debugged inferior, or 0 if no inferior now. |
| 143 | Since various parts of infrun.c test this to see whether there is a program |
| 144 | being debugged it should be nonzero (currently 3 is used) for remote |
| 145 | debugging. */ |
| 146 | |
| 147 | ptid_t inferior_ptid; |
| 148 | |
| 149 | /* Address at which inferior stopped. */ |
| 150 | |
| 151 | CORE_ADDR stop_pc; |
| 152 | |
| 153 | /* Flag indicating that a command has proceeded the inferior past the |
| 154 | current breakpoint. */ |
| 155 | |
| 156 | int breakpoint_proceeded; |
| 157 | |
| 158 | /* Nonzero if stopped due to completion of a stack dummy routine. */ |
| 159 | |
| 160 | enum stop_stack_kind stop_stack_dummy; |
| 161 | |
| 162 | /* Nonzero if stopped due to a random (unexpected) signal in inferior |
| 163 | process. */ |
| 164 | |
| 165 | int stopped_by_random_signal; |
| 166 | |
| 167 | \f |
| 168 | /* Accessor routines. */ |
| 169 | |
| 170 | /* Set the io terminal for the current inferior. Ownership of |
| 171 | TERMINAL_NAME is not transferred. */ |
| 172 | |
| 173 | void |
| 174 | set_inferior_io_terminal (const char *terminal_name) |
| 175 | { |
| 176 | xfree (current_inferior ()->terminal); |
| 177 | current_inferior ()->terminal = terminal_name ? xstrdup (terminal_name) : 0; |
| 178 | } |
| 179 | |
| 180 | const char * |
| 181 | get_inferior_io_terminal (void) |
| 182 | { |
| 183 | return current_inferior ()->terminal; |
| 184 | } |
| 185 | |
| 186 | static void |
| 187 | set_inferior_tty_command (char *args, int from_tty, |
| 188 | struct cmd_list_element *c) |
| 189 | { |
| 190 | /* CLI has assigned the user-provided value to inferior_io_terminal_scratch. |
| 191 | Now route it to current inferior. */ |
| 192 | set_inferior_io_terminal (inferior_io_terminal_scratch); |
| 193 | } |
| 194 | |
| 195 | static void |
| 196 | show_inferior_tty_command (struct ui_file *file, int from_tty, |
| 197 | struct cmd_list_element *c, const char *value) |
| 198 | { |
| 199 | /* Note that we ignore the passed-in value in favor of computing it |
| 200 | directly. */ |
| 201 | const char *inferior_io_terminal = get_inferior_io_terminal (); |
| 202 | |
| 203 | if (inferior_io_terminal == NULL) |
| 204 | inferior_io_terminal = ""; |
| 205 | fprintf_filtered (gdb_stdout, |
| 206 | _("Terminal for future runs of program being debugged " |
| 207 | "is \"%s\".\n"), inferior_io_terminal); |
| 208 | } |
| 209 | |
| 210 | char * |
| 211 | get_inferior_args (void) |
| 212 | { |
| 213 | if (current_inferior ()->argc != 0) |
| 214 | { |
| 215 | char *n; |
| 216 | |
| 217 | n = construct_inferior_arguments (current_inferior ()->argc, |
| 218 | current_inferior ()->argv); |
| 219 | set_inferior_args (n); |
| 220 | xfree (n); |
| 221 | } |
| 222 | |
| 223 | if (current_inferior ()->args == NULL) |
| 224 | current_inferior ()->args = xstrdup (""); |
| 225 | |
| 226 | return current_inferior ()->args; |
| 227 | } |
| 228 | |
| 229 | /* Set the arguments for the current inferior. Ownership of |
| 230 | NEWARGS is not transferred. */ |
| 231 | |
| 232 | void |
| 233 | set_inferior_args (char *newargs) |
| 234 | { |
| 235 | xfree (current_inferior ()->args); |
| 236 | current_inferior ()->args = newargs ? xstrdup (newargs) : NULL; |
| 237 | current_inferior ()->argc = 0; |
| 238 | current_inferior ()->argv = 0; |
| 239 | } |
| 240 | |
| 241 | void |
| 242 | set_inferior_args_vector (int argc, char **argv) |
| 243 | { |
| 244 | current_inferior ()->argc = argc; |
| 245 | current_inferior ()->argv = argv; |
| 246 | } |
| 247 | |
| 248 | /* Notice when `set args' is run. */ |
| 249 | static void |
| 250 | set_args_command (char *args, int from_tty, struct cmd_list_element *c) |
| 251 | { |
| 252 | /* CLI has assigned the user-provided value to inferior_args_scratch. |
| 253 | Now route it to current inferior. */ |
| 254 | set_inferior_args (inferior_args_scratch); |
| 255 | } |
| 256 | |
| 257 | /* Notice when `show args' is run. */ |
| 258 | static void |
| 259 | show_args_command (struct ui_file *file, int from_tty, |
| 260 | struct cmd_list_element *c, const char *value) |
| 261 | { |
| 262 | /* Note that we ignore the passed-in value in favor of computing it |
| 263 | directly. */ |
| 264 | deprecated_show_value_hack (file, from_tty, c, get_inferior_args ()); |
| 265 | } |
| 266 | |
| 267 | \f |
| 268 | /* Compute command-line string given argument vector. This does the |
| 269 | same shell processing as fork_inferior. */ |
| 270 | char * |
| 271 | construct_inferior_arguments (int argc, char **argv) |
| 272 | { |
| 273 | char *result; |
| 274 | |
| 275 | if (STARTUP_WITH_SHELL) |
| 276 | { |
| 277 | /* This holds all the characters considered special to the |
| 278 | typical Unix shells. We include `^' because the SunOS |
| 279 | /bin/sh treats it as a synonym for `|'. */ |
| 280 | char *special = "\"!#$&*()\\|[]{}<>?'\"`~^; \t\n"; |
| 281 | int i; |
| 282 | int length = 0; |
| 283 | char *out, *cp; |
| 284 | |
| 285 | /* We over-compute the size. It shouldn't matter. */ |
| 286 | for (i = 0; i < argc; ++i) |
| 287 | length += 3 * strlen (argv[i]) + 1 + 2 * (argv[i][0] == '\0'); |
| 288 | |
| 289 | result = (char *) xmalloc (length); |
| 290 | out = result; |
| 291 | |
| 292 | for (i = 0; i < argc; ++i) |
| 293 | { |
| 294 | if (i > 0) |
| 295 | *out++ = ' '; |
| 296 | |
| 297 | /* Need to handle empty arguments specially. */ |
| 298 | if (argv[i][0] == '\0') |
| 299 | { |
| 300 | *out++ = '\''; |
| 301 | *out++ = '\''; |
| 302 | } |
| 303 | else |
| 304 | { |
| 305 | for (cp = argv[i]; *cp; ++cp) |
| 306 | { |
| 307 | if (*cp == '\n') |
| 308 | { |
| 309 | /* A newline cannot be quoted with a backslash (it |
| 310 | just disappears), only by putting it inside |
| 311 | quotes. */ |
| 312 | *out++ = '\''; |
| 313 | *out++ = '\n'; |
| 314 | *out++ = '\''; |
| 315 | } |
| 316 | else |
| 317 | { |
| 318 | if (strchr (special, *cp) != NULL) |
| 319 | *out++ = '\\'; |
| 320 | *out++ = *cp; |
| 321 | } |
| 322 | } |
| 323 | } |
| 324 | } |
| 325 | *out = '\0'; |
| 326 | } |
| 327 | else |
| 328 | { |
| 329 | /* In this case we can't handle arguments that contain spaces, |
| 330 | tabs, or newlines -- see breakup_args(). */ |
| 331 | int i; |
| 332 | int length = 0; |
| 333 | |
| 334 | for (i = 0; i < argc; ++i) |
| 335 | { |
| 336 | char *cp = strchr (argv[i], ' '); |
| 337 | if (cp == NULL) |
| 338 | cp = strchr (argv[i], '\t'); |
| 339 | if (cp == NULL) |
| 340 | cp = strchr (argv[i], '\n'); |
| 341 | if (cp != NULL) |
| 342 | error (_("can't handle command-line " |
| 343 | "argument containing whitespace")); |
| 344 | length += strlen (argv[i]) + 1; |
| 345 | } |
| 346 | |
| 347 | result = (char *) xmalloc (length); |
| 348 | result[0] = '\0'; |
| 349 | for (i = 0; i < argc; ++i) |
| 350 | { |
| 351 | if (i > 0) |
| 352 | strcat (result, " "); |
| 353 | strcat (result, argv[i]); |
| 354 | } |
| 355 | } |
| 356 | |
| 357 | return result; |
| 358 | } |
| 359 | \f |
| 360 | |
| 361 | /* This function detects whether or not a '&' character (indicating |
| 362 | background execution) has been added as *the last* of the arguments ARGS |
| 363 | of a command. If it has, it removes it and returns 1. Otherwise it |
| 364 | does nothing and returns 0. */ |
| 365 | static int |
| 366 | strip_bg_char (char **args) |
| 367 | { |
| 368 | char *p = NULL; |
| 369 | |
| 370 | p = strchr (*args, '&'); |
| 371 | |
| 372 | if (p) |
| 373 | { |
| 374 | if (p == (*args + strlen (*args) - 1)) |
| 375 | { |
| 376 | if (strlen (*args) > 1) |
| 377 | { |
| 378 | do |
| 379 | p--; |
| 380 | while (*p == ' ' || *p == '\t'); |
| 381 | *(p + 1) = '\0'; |
| 382 | } |
| 383 | else |
| 384 | *args = 0; |
| 385 | return 1; |
| 386 | } |
| 387 | } |
| 388 | return 0; |
| 389 | } |
| 390 | |
| 391 | /* Common actions to take after creating any sort of inferior, by any |
| 392 | means (running, attaching, connecting, et cetera). The target |
| 393 | should be stopped. */ |
| 394 | |
| 395 | void |
| 396 | post_create_inferior (struct target_ops *target, int from_tty) |
| 397 | { |
| 398 | /* Be sure we own the terminal in case write operations are performed. */ |
| 399 | target_terminal_ours (); |
| 400 | |
| 401 | /* If the target hasn't taken care of this already, do it now. |
| 402 | Targets which need to access registers during to_open, |
| 403 | to_create_inferior, or to_attach should do it earlier; but many |
| 404 | don't need to. */ |
| 405 | target_find_description (); |
| 406 | |
| 407 | /* Now that we know the register layout, retrieve current PC. */ |
| 408 | stop_pc = regcache_read_pc (get_current_regcache ()); |
| 409 | |
| 410 | if (exec_bfd) |
| 411 | { |
| 412 | /* Create the hooks to handle shared library load and unload |
| 413 | events. */ |
| 414 | #ifdef SOLIB_CREATE_INFERIOR_HOOK |
| 415 | SOLIB_CREATE_INFERIOR_HOOK (PIDGET (inferior_ptid)); |
| 416 | #else |
| 417 | solib_create_inferior_hook (from_tty); |
| 418 | #endif |
| 419 | } |
| 420 | |
| 421 | /* If the solist is global across processes, there's no need to |
| 422 | refetch it here. */ |
| 423 | if (exec_bfd && !gdbarch_has_global_solist (target_gdbarch)) |
| 424 | { |
| 425 | /* Sometimes the platform-specific hook loads initial shared |
| 426 | libraries, and sometimes it doesn't. If it doesn't FROM_TTY will be |
| 427 | incorrectly 0 but such solib targets should be fixed anyway. If we |
| 428 | made all the inferior hook methods consistent, this call could be |
| 429 | removed. Call it only after the solib target has been initialized by |
| 430 | solib_create_inferior_hook. */ |
| 431 | |
| 432 | #ifdef SOLIB_ADD |
| 433 | SOLIB_ADD (NULL, 0, target, auto_solib_add); |
| 434 | #else |
| 435 | solib_add (NULL, 0, target, auto_solib_add); |
| 436 | #endif |
| 437 | } |
| 438 | |
| 439 | /* If the user sets watchpoints before execution having started, |
| 440 | then she gets software watchpoints, because GDB can't know which |
| 441 | target will end up being pushed, or if it supports hardware |
| 442 | watchpoints or not. breakpoint_re_set takes care of promoting |
| 443 | watchpoints to hardware watchpoints if possible, however, if this |
| 444 | new inferior doesn't load shared libraries or we don't pull in |
| 445 | symbols from any other source on this target/arch, |
| 446 | breakpoint_re_set is never called. Call it now so that software |
| 447 | watchpoints get a chance to be promoted to hardware watchpoints |
| 448 | if the now pushed target supports hardware watchpoints. */ |
| 449 | breakpoint_re_set (); |
| 450 | |
| 451 | observer_notify_inferior_created (target, from_tty); |
| 452 | } |
| 453 | |
| 454 | /* Kill the inferior if already running. This function is designed |
| 455 | to be called when we are about to start the execution of the program |
| 456 | from the beginning. Ask the user to confirm that he wants to restart |
| 457 | the program being debugged when FROM_TTY is non-null. */ |
| 458 | |
| 459 | static void |
| 460 | kill_if_already_running (int from_tty) |
| 461 | { |
| 462 | if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution) |
| 463 | { |
| 464 | /* Bail out before killing the program if we will not be able to |
| 465 | restart it. */ |
| 466 | target_require_runnable (); |
| 467 | |
| 468 | if (from_tty |
| 469 | && !query (_("The program being debugged has been started already.\n\ |
| 470 | Start it from the beginning? "))) |
| 471 | error (_("Program not restarted.")); |
| 472 | target_kill (); |
| 473 | } |
| 474 | } |
| 475 | |
| 476 | /* Implement the "run" command. If TBREAK_AT_MAIN is set, then insert |
| 477 | a temporary breakpoint at the begining of the main program before |
| 478 | running the program. */ |
| 479 | |
| 480 | static void |
| 481 | run_command_1 (char *args, int from_tty, int tbreak_at_main) |
| 482 | { |
| 483 | char *exec_file; |
| 484 | struct cleanup *old_chain; |
| 485 | ptid_t ptid; |
| 486 | |
| 487 | dont_repeat (); |
| 488 | |
| 489 | kill_if_already_running (from_tty); |
| 490 | |
| 491 | init_wait_for_inferior (); |
| 492 | clear_breakpoint_hit_counts (); |
| 493 | |
| 494 | /* Clean up any leftovers from other runs. Some other things from |
| 495 | this function should probably be moved into target_pre_inferior. */ |
| 496 | target_pre_inferior (from_tty); |
| 497 | |
| 498 | /* The comment here used to read, "The exec file is re-read every |
| 499 | time we do a generic_mourn_inferior, so we just have to worry |
| 500 | about the symbol file." The `generic_mourn_inferior' function |
| 501 | gets called whenever the program exits. However, suppose the |
| 502 | program exits, and *then* the executable file changes? We need |
| 503 | to check again here. Since reopen_exec_file doesn't do anything |
| 504 | if the timestamp hasn't changed, I don't see the harm. */ |
| 505 | reopen_exec_file (); |
| 506 | reread_symbols (); |
| 507 | |
| 508 | /* Insert the temporary breakpoint if a location was specified. */ |
| 509 | if (tbreak_at_main) |
| 510 | tbreak_command (main_name (), 0); |
| 511 | |
| 512 | exec_file = (char *) get_exec_file (0); |
| 513 | |
| 514 | if (non_stop && !target_supports_non_stop ()) |
| 515 | error (_("The target does not support running in non-stop mode.")); |
| 516 | |
| 517 | /* We keep symbols from add-symbol-file, on the grounds that the |
| 518 | user might want to add some symbols before running the program |
| 519 | (right?). But sometimes (dynamic loading where the user manually |
| 520 | introduces the new symbols with add-symbol-file), the code which |
| 521 | the symbols describe does not persist between runs. Currently |
| 522 | the user has to manually nuke all symbols between runs if they |
| 523 | want them to go away (PR 2207). This is probably reasonable. */ |
| 524 | |
| 525 | if (!args) |
| 526 | { |
| 527 | if (target_can_async_p ()) |
| 528 | async_disable_stdin (); |
| 529 | } |
| 530 | else |
| 531 | { |
| 532 | int async_exec = strip_bg_char (&args); |
| 533 | |
| 534 | /* If we get a request for running in the bg but the target |
| 535 | doesn't support it, error out. */ |
| 536 | if (async_exec && !target_can_async_p ()) |
| 537 | error (_("Asynchronous execution not supported on this target.")); |
| 538 | |
| 539 | /* If we don't get a request of running in the bg, then we need |
| 540 | to simulate synchronous (fg) execution. */ |
| 541 | if (!async_exec && target_can_async_p ()) |
| 542 | { |
| 543 | /* Simulate synchronous execution. */ |
| 544 | async_disable_stdin (); |
| 545 | } |
| 546 | |
| 547 | /* If there were other args, beside '&', process them. */ |
| 548 | if (args) |
| 549 | set_inferior_args (args); |
| 550 | } |
| 551 | |
| 552 | if (from_tty) |
| 553 | { |
| 554 | ui_out_field_string (uiout, NULL, "Starting program"); |
| 555 | ui_out_text (uiout, ": "); |
| 556 | if (exec_file) |
| 557 | ui_out_field_string (uiout, "execfile", exec_file); |
| 558 | ui_out_spaces (uiout, 1); |
| 559 | /* We call get_inferior_args() because we might need to compute |
| 560 | the value now. */ |
| 561 | ui_out_field_string (uiout, "infargs", get_inferior_args ()); |
| 562 | ui_out_text (uiout, "\n"); |
| 563 | ui_out_flush (uiout); |
| 564 | } |
| 565 | |
| 566 | /* We call get_inferior_args() because we might need to compute |
| 567 | the value now. */ |
| 568 | target_create_inferior (exec_file, get_inferior_args (), |
| 569 | environ_vector (current_inferior ()->environment), |
| 570 | from_tty); |
| 571 | |
| 572 | /* We're starting off a new process. When we get out of here, in |
| 573 | non-stop mode, finish the state of all threads of that process, |
| 574 | but leave other threads alone, as they may be stopped in internal |
| 575 | events --- the frontend shouldn't see them as stopped. In |
| 576 | all-stop, always finish the state of all threads, as we may be |
| 577 | resuming more than just the new process. */ |
| 578 | if (non_stop) |
| 579 | ptid = pid_to_ptid (ptid_get_pid (inferior_ptid)); |
| 580 | else |
| 581 | ptid = minus_one_ptid; |
| 582 | old_chain = make_cleanup (finish_thread_state_cleanup, &ptid); |
| 583 | |
| 584 | /* Pass zero for FROM_TTY, because at this point the "run" command |
| 585 | has done its thing; now we are setting up the running program. */ |
| 586 | post_create_inferior (¤t_target, 0); |
| 587 | |
| 588 | /* Start the target running. Do not use -1 continuation as it would skip |
| 589 | breakpoint right at the entry point. */ |
| 590 | proceed (regcache_read_pc (get_current_regcache ()), TARGET_SIGNAL_0, 0); |
| 591 | |
| 592 | /* Since there was no error, there's no need to finish the thread |
| 593 | states here. */ |
| 594 | discard_cleanups (old_chain); |
| 595 | } |
| 596 | |
| 597 | static void |
| 598 | run_command (char *args, int from_tty) |
| 599 | { |
| 600 | run_command_1 (args, from_tty, 0); |
| 601 | } |
| 602 | |
| 603 | static void |
| 604 | run_no_args_command (char *args, int from_tty) |
| 605 | { |
| 606 | set_inferior_args (""); |
| 607 | } |
| 608 | \f |
| 609 | |
| 610 | /* Start the execution of the program up until the beginning of the main |
| 611 | program. */ |
| 612 | |
| 613 | static void |
| 614 | start_command (char *args, int from_tty) |
| 615 | { |
| 616 | /* Some languages such as Ada need to search inside the program |
| 617 | minimal symbols for the location where to put the temporary |
| 618 | breakpoint before starting. */ |
| 619 | if (!have_minimal_symbols ()) |
| 620 | error (_("No symbol table loaded. Use the \"file\" command.")); |
| 621 | |
| 622 | /* Run the program until reaching the main procedure... */ |
| 623 | run_command_1 (args, from_tty, 1); |
| 624 | } |
| 625 | |
| 626 | static int |
| 627 | proceed_thread_callback (struct thread_info *thread, void *arg) |
| 628 | { |
| 629 | /* We go through all threads individually instead of compressing |
| 630 | into a single target `resume_all' request, because some threads |
| 631 | may be stopped in internal breakpoints/events, or stopped waiting |
| 632 | for its turn in the displaced stepping queue (that is, they are |
| 633 | running && !executing). The target side has no idea about why |
| 634 | the thread is stopped, so a `resume_all' command would resume too |
| 635 | much. If/when GDB gains a way to tell the target `hold this |
| 636 | thread stopped until I say otherwise', then we can optimize |
| 637 | this. */ |
| 638 | if (!is_stopped (thread->ptid)) |
| 639 | return 0; |
| 640 | |
| 641 | switch_to_thread (thread->ptid); |
| 642 | clear_proceed_status (); |
| 643 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); |
| 644 | return 0; |
| 645 | } |
| 646 | |
| 647 | void |
| 648 | ensure_valid_thread (void) |
| 649 | { |
| 650 | if (ptid_equal (inferior_ptid, null_ptid) |
| 651 | || is_exited (inferior_ptid)) |
| 652 | error (_("Cannot execute this command without a live selected thread.")); |
| 653 | } |
| 654 | |
| 655 | /* If the user is looking at trace frames, any resumption of execution |
| 656 | is likely to mix up recorded and live target data. So simply |
| 657 | disallow those commands. */ |
| 658 | |
| 659 | void |
| 660 | ensure_not_tfind_mode (void) |
| 661 | { |
| 662 | if (get_traceframe_number () >= 0) |
| 663 | error (_("Cannot execute this command while looking at trace frames.")); |
| 664 | } |
| 665 | |
| 666 | void |
| 667 | continue_1 (int all_threads) |
| 668 | { |
| 669 | ERROR_NO_INFERIOR; |
| 670 | ensure_not_tfind_mode (); |
| 671 | |
| 672 | if (non_stop && all_threads) |
| 673 | { |
| 674 | /* Don't error out if the current thread is running, because |
| 675 | there may be other stopped threads. */ |
| 676 | struct cleanup *old_chain; |
| 677 | |
| 678 | /* Backup current thread and selected frame. */ |
| 679 | old_chain = make_cleanup_restore_current_thread (); |
| 680 | |
| 681 | iterate_over_threads (proceed_thread_callback, NULL); |
| 682 | |
| 683 | /* Restore selected ptid. */ |
| 684 | do_cleanups (old_chain); |
| 685 | } |
| 686 | else |
| 687 | { |
| 688 | ensure_valid_thread (); |
| 689 | ensure_not_running (); |
| 690 | clear_proceed_status (); |
| 691 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); |
| 692 | } |
| 693 | } |
| 694 | |
| 695 | /* continue [-a] [proceed-count] [&] */ |
| 696 | void |
| 697 | continue_command (char *args, int from_tty) |
| 698 | { |
| 699 | int async_exec = 0; |
| 700 | int all_threads = 0; |
| 701 | ERROR_NO_INFERIOR; |
| 702 | |
| 703 | /* Find out whether we must run in the background. */ |
| 704 | if (args != NULL) |
| 705 | async_exec = strip_bg_char (&args); |
| 706 | |
| 707 | /* If we must run in the background, but the target can't do it, |
| 708 | error out. */ |
| 709 | if (async_exec && !target_can_async_p ()) |
| 710 | error (_("Asynchronous execution not supported on this target.")); |
| 711 | |
| 712 | /* If we are not asked to run in the bg, then prepare to run in the |
| 713 | foreground, synchronously. */ |
| 714 | if (!async_exec && target_can_async_p ()) |
| 715 | { |
| 716 | /* Simulate synchronous execution. */ |
| 717 | async_disable_stdin (); |
| 718 | } |
| 719 | |
| 720 | if (args != NULL) |
| 721 | { |
| 722 | if (strncmp (args, "-a", sizeof ("-a") - 1) == 0) |
| 723 | { |
| 724 | all_threads = 1; |
| 725 | args += sizeof ("-a") - 1; |
| 726 | if (*args == '\0') |
| 727 | args = NULL; |
| 728 | } |
| 729 | } |
| 730 | |
| 731 | if (!non_stop && all_threads) |
| 732 | error (_("`-a' is meaningless in all-stop mode.")); |
| 733 | |
| 734 | if (args != NULL && all_threads) |
| 735 | error (_("Can't resume all threads and specify " |
| 736 | "proceed count simultaneously.")); |
| 737 | |
| 738 | /* If we have an argument left, set proceed count of breakpoint we |
| 739 | stopped at. */ |
| 740 | if (args != NULL) |
| 741 | { |
| 742 | bpstat bs = NULL; |
| 743 | int num, stat; |
| 744 | int stopped = 0; |
| 745 | struct thread_info *tp; |
| 746 | |
| 747 | if (non_stop) |
| 748 | tp = find_thread_ptid (inferior_ptid); |
| 749 | else |
| 750 | { |
| 751 | ptid_t last_ptid; |
| 752 | struct target_waitstatus ws; |
| 753 | |
| 754 | get_last_target_status (&last_ptid, &ws); |
| 755 | tp = find_thread_ptid (last_ptid); |
| 756 | } |
| 757 | if (tp != NULL) |
| 758 | bs = tp->control.stop_bpstat; |
| 759 | |
| 760 | while ((stat = bpstat_num (&bs, &num)) != 0) |
| 761 | if (stat > 0) |
| 762 | { |
| 763 | set_ignore_count (num, |
| 764 | parse_and_eval_long (args) - 1, |
| 765 | from_tty); |
| 766 | /* set_ignore_count prints a message ending with a period. |
| 767 | So print two spaces before "Continuing.". */ |
| 768 | if (from_tty) |
| 769 | printf_filtered (" "); |
| 770 | stopped = 1; |
| 771 | } |
| 772 | |
| 773 | if (!stopped && from_tty) |
| 774 | { |
| 775 | printf_filtered |
| 776 | ("Not stopped at any breakpoint; argument ignored.\n"); |
| 777 | } |
| 778 | } |
| 779 | |
| 780 | if (from_tty) |
| 781 | printf_filtered (_("Continuing.\n")); |
| 782 | |
| 783 | continue_1 (all_threads); |
| 784 | } |
| 785 | \f |
| 786 | /* Record the starting point of a "step" or "next" command. */ |
| 787 | |
| 788 | static void |
| 789 | set_step_frame (void) |
| 790 | { |
| 791 | struct symtab_and_line sal; |
| 792 | |
| 793 | find_frame_sal (get_current_frame (), &sal); |
| 794 | set_step_info (get_current_frame (), sal); |
| 795 | } |
| 796 | |
| 797 | /* Step until outside of current statement. */ |
| 798 | |
| 799 | static void |
| 800 | step_command (char *count_string, int from_tty) |
| 801 | { |
| 802 | step_1 (0, 0, count_string); |
| 803 | } |
| 804 | |
| 805 | /* Likewise, but skip over subroutine calls as if single instructions. */ |
| 806 | |
| 807 | static void |
| 808 | next_command (char *count_string, int from_tty) |
| 809 | { |
| 810 | step_1 (1, 0, count_string); |
| 811 | } |
| 812 | |
| 813 | /* Likewise, but step only one instruction. */ |
| 814 | |
| 815 | void |
| 816 | stepi_command (char *count_string, int from_tty) |
| 817 | { |
| 818 | step_1 (0, 1, count_string); |
| 819 | } |
| 820 | |
| 821 | void |
| 822 | nexti_command (char *count_string, int from_tty) |
| 823 | { |
| 824 | step_1 (1, 1, count_string); |
| 825 | } |
| 826 | |
| 827 | void |
| 828 | delete_longjmp_breakpoint_cleanup (void *arg) |
| 829 | { |
| 830 | int thread = * (int *) arg; |
| 831 | delete_longjmp_breakpoint (thread); |
| 832 | } |
| 833 | |
| 834 | static void |
| 835 | step_1 (int skip_subroutines, int single_inst, char *count_string) |
| 836 | { |
| 837 | int count = 1; |
| 838 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
| 839 | int async_exec = 0; |
| 840 | int thread = -1; |
| 841 | |
| 842 | ERROR_NO_INFERIOR; |
| 843 | ensure_not_tfind_mode (); |
| 844 | ensure_valid_thread (); |
| 845 | ensure_not_running (); |
| 846 | |
| 847 | if (count_string) |
| 848 | async_exec = strip_bg_char (&count_string); |
| 849 | |
| 850 | /* If we get a request for running in the bg but the target |
| 851 | doesn't support it, error out. */ |
| 852 | if (async_exec && !target_can_async_p ()) |
| 853 | error (_("Asynchronous execution not supported on this target.")); |
| 854 | |
| 855 | /* If we don't get a request of running in the bg, then we need |
| 856 | to simulate synchronous (fg) execution. */ |
| 857 | if (!async_exec && target_can_async_p ()) |
| 858 | { |
| 859 | /* Simulate synchronous execution. */ |
| 860 | async_disable_stdin (); |
| 861 | } |
| 862 | |
| 863 | count = count_string ? parse_and_eval_long (count_string) : 1; |
| 864 | |
| 865 | if (!single_inst || skip_subroutines) /* Leave si command alone. */ |
| 866 | { |
| 867 | struct thread_info *tp = inferior_thread (); |
| 868 | |
| 869 | if (in_thread_list (inferior_ptid)) |
| 870 | thread = pid_to_thread_id (inferior_ptid); |
| 871 | |
| 872 | set_longjmp_breakpoint (tp, get_frame_id (get_current_frame ())); |
| 873 | |
| 874 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
| 875 | } |
| 876 | |
| 877 | /* In synchronous case, all is well; each step_once call will step once. */ |
| 878 | if (!target_can_async_p ()) |
| 879 | { |
| 880 | for (; count > 0; count--) |
| 881 | { |
| 882 | struct thread_info *tp; |
| 883 | |
| 884 | step_once (skip_subroutines, single_inst, count, thread); |
| 885 | |
| 886 | if (target_has_execution |
| 887 | && !ptid_equal (inferior_ptid, null_ptid)) |
| 888 | tp = inferior_thread (); |
| 889 | else |
| 890 | tp = NULL; |
| 891 | |
| 892 | if (!tp || !tp->control.stop_step || !tp->step_multi) |
| 893 | { |
| 894 | /* If we stopped for some reason that is not stepping |
| 895 | there are no further steps to make. */ |
| 896 | if (tp) |
| 897 | tp->step_multi = 0; |
| 898 | break; |
| 899 | } |
| 900 | } |
| 901 | |
| 902 | do_cleanups (cleanups); |
| 903 | } |
| 904 | else |
| 905 | { |
| 906 | /* In the case of an asynchronous target things get complicated; |
| 907 | do only one step for now, before returning control to the |
| 908 | event loop. Let the continuation figure out how many other |
| 909 | steps we need to do, and handle them one at the time, through |
| 910 | step_once. */ |
| 911 | step_once (skip_subroutines, single_inst, count, thread); |
| 912 | |
| 913 | /* We are running, and the continuation is installed. It will |
| 914 | disable the longjmp breakpoint as appropriate. */ |
| 915 | discard_cleanups (cleanups); |
| 916 | } |
| 917 | } |
| 918 | |
| 919 | struct step_1_continuation_args |
| 920 | { |
| 921 | int count; |
| 922 | int skip_subroutines; |
| 923 | int single_inst; |
| 924 | int thread; |
| 925 | }; |
| 926 | |
| 927 | /* Called after we are done with one step operation, to check whether |
| 928 | we need to step again, before we print the prompt and return control |
| 929 | to the user. If count is > 1, we will need to do one more call to |
| 930 | proceed(), via step_once(). Basically it is like step_once and |
| 931 | step_1_continuation are co-recursive. */ |
| 932 | static void |
| 933 | step_1_continuation (void *args) |
| 934 | { |
| 935 | struct step_1_continuation_args *a = args; |
| 936 | |
| 937 | if (target_has_execution) |
| 938 | { |
| 939 | struct thread_info *tp; |
| 940 | |
| 941 | tp = inferior_thread (); |
| 942 | if (tp->step_multi && tp->control.stop_step) |
| 943 | { |
| 944 | /* There are more steps to make, and we did stop due to |
| 945 | ending a stepping range. Do another step. */ |
| 946 | step_once (a->skip_subroutines, a->single_inst, |
| 947 | a->count - 1, a->thread); |
| 948 | return; |
| 949 | } |
| 950 | tp->step_multi = 0; |
| 951 | } |
| 952 | |
| 953 | /* We either stopped for some reason that is not stepping, or there |
| 954 | are no further steps to make. Cleanup. */ |
| 955 | if (!a->single_inst || a->skip_subroutines) |
| 956 | delete_longjmp_breakpoint (a->thread); |
| 957 | } |
| 958 | |
| 959 | /* Do just one step operation. This is useful to implement the 'step |
| 960 | n' kind of commands. In case of asynchronous targets, we will have |
| 961 | to set up a continuation to be done after the target stops (after |
| 962 | this one step). For synch targets, the caller handles further |
| 963 | stepping. */ |
| 964 | |
| 965 | static void |
| 966 | step_once (int skip_subroutines, int single_inst, int count, int thread) |
| 967 | { |
| 968 | struct frame_info *frame = get_current_frame (); |
| 969 | |
| 970 | if (count > 0) |
| 971 | { |
| 972 | /* Don't assume THREAD is a valid thread id. It is set to -1 if |
| 973 | the longjmp breakpoint was not required. Use the |
| 974 | INFERIOR_PTID thread instead, which is the same thread when |
| 975 | THREAD is set. */ |
| 976 | struct thread_info *tp = inferior_thread (); |
| 977 | |
| 978 | clear_proceed_status (); |
| 979 | set_step_frame (); |
| 980 | |
| 981 | if (!single_inst) |
| 982 | { |
| 983 | CORE_ADDR pc; |
| 984 | |
| 985 | /* Step at an inlined function behaves like "down". */ |
| 986 | if (!skip_subroutines && !single_inst |
| 987 | && inline_skipped_frames (inferior_ptid)) |
| 988 | { |
| 989 | step_into_inline_frame (inferior_ptid); |
| 990 | if (count > 1) |
| 991 | step_once (skip_subroutines, single_inst, count - 1, thread); |
| 992 | else |
| 993 | /* Pretend that we've stopped. */ |
| 994 | normal_stop (); |
| 995 | return; |
| 996 | } |
| 997 | |
| 998 | pc = get_frame_pc (frame); |
| 999 | find_pc_line_pc_range (pc, |
| 1000 | &tp->control.step_range_start, |
| 1001 | &tp->control.step_range_end); |
| 1002 | |
| 1003 | /* If we have no line info, switch to stepi mode. */ |
| 1004 | if (tp->control.step_range_end == 0 && step_stop_if_no_debug) |
| 1005 | tp->control.step_range_start = tp->control.step_range_end = 1; |
| 1006 | else if (tp->control.step_range_end == 0) |
| 1007 | { |
| 1008 | char *name; |
| 1009 | |
| 1010 | if (find_pc_partial_function (pc, &name, |
| 1011 | &tp->control.step_range_start, |
| 1012 | &tp->control.step_range_end) == 0) |
| 1013 | error (_("Cannot find bounds of current function")); |
| 1014 | |
| 1015 | target_terminal_ours (); |
| 1016 | printf_filtered (_("Single stepping until exit from function %s," |
| 1017 | "\nwhich has no line number information.\n"), |
| 1018 | name); |
| 1019 | } |
| 1020 | } |
| 1021 | else |
| 1022 | { |
| 1023 | /* Say we are stepping, but stop after one insn whatever it does. */ |
| 1024 | tp->control.step_range_start = tp->control.step_range_end = 1; |
| 1025 | if (!skip_subroutines) |
| 1026 | /* It is stepi. |
| 1027 | Don't step over function calls, not even to functions lacking |
| 1028 | line numbers. */ |
| 1029 | tp->control.step_over_calls = STEP_OVER_NONE; |
| 1030 | } |
| 1031 | |
| 1032 | if (skip_subroutines) |
| 1033 | tp->control.step_over_calls = STEP_OVER_ALL; |
| 1034 | |
| 1035 | tp->step_multi = (count > 1); |
| 1036 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); |
| 1037 | |
| 1038 | /* For async targets, register a continuation to do any |
| 1039 | additional steps. For sync targets, the caller will handle |
| 1040 | further stepping. */ |
| 1041 | if (target_can_async_p ()) |
| 1042 | { |
| 1043 | struct step_1_continuation_args *args; |
| 1044 | |
| 1045 | args = xmalloc (sizeof (*args)); |
| 1046 | args->skip_subroutines = skip_subroutines; |
| 1047 | args->single_inst = single_inst; |
| 1048 | args->count = count; |
| 1049 | args->thread = thread; |
| 1050 | |
| 1051 | add_intermediate_continuation (tp, step_1_continuation, args, xfree); |
| 1052 | } |
| 1053 | } |
| 1054 | } |
| 1055 | |
| 1056 | \f |
| 1057 | /* Continue program at specified address. */ |
| 1058 | |
| 1059 | static void |
| 1060 | jump_command (char *arg, int from_tty) |
| 1061 | { |
| 1062 | struct gdbarch *gdbarch = get_current_arch (); |
| 1063 | CORE_ADDR addr; |
| 1064 | struct symtabs_and_lines sals; |
| 1065 | struct symtab_and_line sal; |
| 1066 | struct symbol *fn; |
| 1067 | struct symbol *sfn; |
| 1068 | int async_exec = 0; |
| 1069 | |
| 1070 | ERROR_NO_INFERIOR; |
| 1071 | ensure_not_tfind_mode (); |
| 1072 | ensure_valid_thread (); |
| 1073 | ensure_not_running (); |
| 1074 | |
| 1075 | /* Find out whether we must run in the background. */ |
| 1076 | if (arg != NULL) |
| 1077 | async_exec = strip_bg_char (&arg); |
| 1078 | |
| 1079 | /* If we must run in the background, but the target can't do it, |
| 1080 | error out. */ |
| 1081 | if (async_exec && !target_can_async_p ()) |
| 1082 | error (_("Asynchronous execution not supported on this target.")); |
| 1083 | |
| 1084 | if (!arg) |
| 1085 | error_no_arg (_("starting address")); |
| 1086 | |
| 1087 | sals = decode_line_spec_1 (arg, 1); |
| 1088 | if (sals.nelts != 1) |
| 1089 | { |
| 1090 | error (_("Unreasonable jump request")); |
| 1091 | } |
| 1092 | |
| 1093 | sal = sals.sals[0]; |
| 1094 | xfree (sals.sals); |
| 1095 | |
| 1096 | if (sal.symtab == 0 && sal.pc == 0) |
| 1097 | error (_("No source file has been specified.")); |
| 1098 | |
| 1099 | resolve_sal_pc (&sal); /* May error out. */ |
| 1100 | |
| 1101 | /* See if we are trying to jump to another function. */ |
| 1102 | fn = get_frame_function (get_current_frame ()); |
| 1103 | sfn = find_pc_function (sal.pc); |
| 1104 | if (fn != NULL && sfn != fn) |
| 1105 | { |
| 1106 | if (!query (_("Line %d is not in `%s'. Jump anyway? "), sal.line, |
| 1107 | SYMBOL_PRINT_NAME (fn))) |
| 1108 | { |
| 1109 | error (_("Not confirmed.")); |
| 1110 | /* NOTREACHED */ |
| 1111 | } |
| 1112 | } |
| 1113 | |
| 1114 | if (sfn != NULL) |
| 1115 | { |
| 1116 | fixup_symbol_section (sfn, 0); |
| 1117 | if (section_is_overlay (SYMBOL_OBJ_SECTION (sfn)) && |
| 1118 | !section_is_mapped (SYMBOL_OBJ_SECTION (sfn))) |
| 1119 | { |
| 1120 | if (!query (_("WARNING!!! Destination is in " |
| 1121 | "unmapped overlay! Jump anyway? "))) |
| 1122 | { |
| 1123 | error (_("Not confirmed.")); |
| 1124 | /* NOTREACHED */ |
| 1125 | } |
| 1126 | } |
| 1127 | } |
| 1128 | |
| 1129 | addr = sal.pc; |
| 1130 | |
| 1131 | if (from_tty) |
| 1132 | { |
| 1133 | printf_filtered (_("Continuing at ")); |
| 1134 | fputs_filtered (paddress (gdbarch, addr), gdb_stdout); |
| 1135 | printf_filtered (".\n"); |
| 1136 | } |
| 1137 | |
| 1138 | /* If we are not asked to run in the bg, then prepare to run in the |
| 1139 | foreground, synchronously. */ |
| 1140 | if (!async_exec && target_can_async_p ()) |
| 1141 | { |
| 1142 | /* Simulate synchronous execution. */ |
| 1143 | async_disable_stdin (); |
| 1144 | } |
| 1145 | |
| 1146 | clear_proceed_status (); |
| 1147 | proceed (addr, TARGET_SIGNAL_0, 0); |
| 1148 | } |
| 1149 | \f |
| 1150 | |
| 1151 | /* Go to line or address in current procedure. */ |
| 1152 | static void |
| 1153 | go_command (char *line_no, int from_tty) |
| 1154 | { |
| 1155 | if (line_no == (char *) NULL || !*line_no) |
| 1156 | printf_filtered (_("Usage: go <location>\n")); |
| 1157 | else |
| 1158 | { |
| 1159 | tbreak_command (line_no, from_tty); |
| 1160 | jump_command (line_no, from_tty); |
| 1161 | } |
| 1162 | } |
| 1163 | \f |
| 1164 | |
| 1165 | /* Continue program giving it specified signal. */ |
| 1166 | |
| 1167 | static void |
| 1168 | signal_command (char *signum_exp, int from_tty) |
| 1169 | { |
| 1170 | enum target_signal oursig; |
| 1171 | int async_exec = 0; |
| 1172 | |
| 1173 | dont_repeat (); /* Too dangerous. */ |
| 1174 | ERROR_NO_INFERIOR; |
| 1175 | ensure_not_tfind_mode (); |
| 1176 | ensure_valid_thread (); |
| 1177 | ensure_not_running (); |
| 1178 | |
| 1179 | /* Find out whether we must run in the background. */ |
| 1180 | if (signum_exp != NULL) |
| 1181 | async_exec = strip_bg_char (&signum_exp); |
| 1182 | |
| 1183 | /* If we must run in the background, but the target can't do it, |
| 1184 | error out. */ |
| 1185 | if (async_exec && !target_can_async_p ()) |
| 1186 | error (_("Asynchronous execution not supported on this target.")); |
| 1187 | |
| 1188 | /* If we are not asked to run in the bg, then prepare to run in the |
| 1189 | foreground, synchronously. */ |
| 1190 | if (!async_exec && target_can_async_p ()) |
| 1191 | { |
| 1192 | /* Simulate synchronous execution. */ |
| 1193 | async_disable_stdin (); |
| 1194 | } |
| 1195 | |
| 1196 | if (!signum_exp) |
| 1197 | error_no_arg (_("signal number")); |
| 1198 | |
| 1199 | /* It would be even slicker to make signal names be valid expressions, |
| 1200 | (the type could be "enum $signal" or some such), then the user could |
| 1201 | assign them to convenience variables. */ |
| 1202 | oursig = target_signal_from_name (signum_exp); |
| 1203 | |
| 1204 | if (oursig == TARGET_SIGNAL_UNKNOWN) |
| 1205 | { |
| 1206 | /* No, try numeric. */ |
| 1207 | int num = parse_and_eval_long (signum_exp); |
| 1208 | |
| 1209 | if (num == 0) |
| 1210 | oursig = TARGET_SIGNAL_0; |
| 1211 | else |
| 1212 | oursig = target_signal_from_command (num); |
| 1213 | } |
| 1214 | |
| 1215 | if (from_tty) |
| 1216 | { |
| 1217 | if (oursig == TARGET_SIGNAL_0) |
| 1218 | printf_filtered (_("Continuing with no signal.\n")); |
| 1219 | else |
| 1220 | printf_filtered (_("Continuing with signal %s.\n"), |
| 1221 | target_signal_to_name (oursig)); |
| 1222 | } |
| 1223 | |
| 1224 | clear_proceed_status (); |
| 1225 | proceed ((CORE_ADDR) -1, oursig, 0); |
| 1226 | } |
| 1227 | |
| 1228 | /* A continuation callback for until_next_command. */ |
| 1229 | |
| 1230 | static void |
| 1231 | until_next_continuation (void *arg) |
| 1232 | { |
| 1233 | struct thread_info *tp = arg; |
| 1234 | |
| 1235 | delete_longjmp_breakpoint (tp->num); |
| 1236 | } |
| 1237 | |
| 1238 | /* Proceed until we reach a different source line with pc greater than |
| 1239 | our current one or exit the function. We skip calls in both cases. |
| 1240 | |
| 1241 | Note that eventually this command should probably be changed so |
| 1242 | that only source lines are printed out when we hit the breakpoint |
| 1243 | we set. This may involve changes to wait_for_inferior and the |
| 1244 | proceed status code. */ |
| 1245 | |
| 1246 | static void |
| 1247 | until_next_command (int from_tty) |
| 1248 | { |
| 1249 | struct frame_info *frame; |
| 1250 | CORE_ADDR pc; |
| 1251 | struct symbol *func; |
| 1252 | struct symtab_and_line sal; |
| 1253 | struct thread_info *tp = inferior_thread (); |
| 1254 | int thread = tp->num; |
| 1255 | struct cleanup *old_chain; |
| 1256 | |
| 1257 | clear_proceed_status (); |
| 1258 | set_step_frame (); |
| 1259 | |
| 1260 | frame = get_current_frame (); |
| 1261 | |
| 1262 | /* Step until either exited from this function or greater |
| 1263 | than the current line (if in symbolic section) or pc (if |
| 1264 | not). */ |
| 1265 | |
| 1266 | pc = get_frame_pc (frame); |
| 1267 | func = find_pc_function (pc); |
| 1268 | |
| 1269 | if (!func) |
| 1270 | { |
| 1271 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (pc); |
| 1272 | |
| 1273 | if (msymbol == NULL) |
| 1274 | error (_("Execution is not within a known function.")); |
| 1275 | |
| 1276 | tp->control.step_range_start = SYMBOL_VALUE_ADDRESS (msymbol); |
| 1277 | tp->control.step_range_end = pc; |
| 1278 | } |
| 1279 | else |
| 1280 | { |
| 1281 | sal = find_pc_line (pc, 0); |
| 1282 | |
| 1283 | tp->control.step_range_start = BLOCK_START (SYMBOL_BLOCK_VALUE (func)); |
| 1284 | tp->control.step_range_end = sal.end; |
| 1285 | } |
| 1286 | |
| 1287 | tp->control.step_over_calls = STEP_OVER_ALL; |
| 1288 | |
| 1289 | tp->step_multi = 0; /* Only one call to proceed */ |
| 1290 | |
| 1291 | set_longjmp_breakpoint (tp, get_frame_id (frame)); |
| 1292 | old_chain = make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
| 1293 | |
| 1294 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); |
| 1295 | |
| 1296 | if (target_can_async_p () && is_running (inferior_ptid)) |
| 1297 | { |
| 1298 | discard_cleanups (old_chain); |
| 1299 | add_continuation (tp, until_next_continuation, tp, NULL); |
| 1300 | } |
| 1301 | else |
| 1302 | do_cleanups (old_chain); |
| 1303 | } |
| 1304 | |
| 1305 | static void |
| 1306 | until_command (char *arg, int from_tty) |
| 1307 | { |
| 1308 | int async_exec = 0; |
| 1309 | |
| 1310 | ERROR_NO_INFERIOR; |
| 1311 | ensure_not_tfind_mode (); |
| 1312 | ensure_valid_thread (); |
| 1313 | ensure_not_running (); |
| 1314 | |
| 1315 | /* Find out whether we must run in the background. */ |
| 1316 | if (arg != NULL) |
| 1317 | async_exec = strip_bg_char (&arg); |
| 1318 | |
| 1319 | /* If we must run in the background, but the target can't do it, |
| 1320 | error out. */ |
| 1321 | if (async_exec && !target_can_async_p ()) |
| 1322 | error (_("Asynchronous execution not supported on this target.")); |
| 1323 | |
| 1324 | /* If we are not asked to run in the bg, then prepare to run in the |
| 1325 | foreground, synchronously. */ |
| 1326 | if (!async_exec && target_can_async_p ()) |
| 1327 | { |
| 1328 | /* Simulate synchronous execution. */ |
| 1329 | async_disable_stdin (); |
| 1330 | } |
| 1331 | |
| 1332 | if (arg) |
| 1333 | until_break_command (arg, from_tty, 0); |
| 1334 | else |
| 1335 | until_next_command (from_tty); |
| 1336 | } |
| 1337 | |
| 1338 | static void |
| 1339 | advance_command (char *arg, int from_tty) |
| 1340 | { |
| 1341 | int async_exec = 0; |
| 1342 | |
| 1343 | ERROR_NO_INFERIOR; |
| 1344 | ensure_not_tfind_mode (); |
| 1345 | ensure_valid_thread (); |
| 1346 | ensure_not_running (); |
| 1347 | |
| 1348 | if (arg == NULL) |
| 1349 | error_no_arg (_("a location")); |
| 1350 | |
| 1351 | /* Find out whether we must run in the background. */ |
| 1352 | if (arg != NULL) |
| 1353 | async_exec = strip_bg_char (&arg); |
| 1354 | |
| 1355 | /* If we must run in the background, but the target can't do it, |
| 1356 | error out. */ |
| 1357 | if (async_exec && !target_can_async_p ()) |
| 1358 | error (_("Asynchronous execution not supported on this target.")); |
| 1359 | |
| 1360 | /* If we are not asked to run in the bg, then prepare to run in the |
| 1361 | foreground, synchronously. */ |
| 1362 | if (!async_exec && target_can_async_p ()) |
| 1363 | { |
| 1364 | /* Simulate synchronous execution. */ |
| 1365 | async_disable_stdin (); |
| 1366 | } |
| 1367 | |
| 1368 | until_break_command (arg, from_tty, 1); |
| 1369 | } |
| 1370 | \f |
| 1371 | /* Print the result of a function at the end of a 'finish' command. */ |
| 1372 | |
| 1373 | static void |
| 1374 | print_return_value (struct type *func_type, struct type *value_type) |
| 1375 | { |
| 1376 | struct gdbarch *gdbarch = get_regcache_arch (stop_registers); |
| 1377 | struct cleanup *old_chain; |
| 1378 | struct ui_stream *stb; |
| 1379 | struct value *value; |
| 1380 | |
| 1381 | CHECK_TYPEDEF (value_type); |
| 1382 | gdb_assert (TYPE_CODE (value_type) != TYPE_CODE_VOID); |
| 1383 | |
| 1384 | /* FIXME: 2003-09-27: When returning from a nested inferior function |
| 1385 | call, it's possible (with no help from the architecture vector) |
| 1386 | to locate and return/print a "struct return" value. This is just |
| 1387 | a more complicated case of what is already being done in in the |
| 1388 | inferior function call code. In fact, when inferior function |
| 1389 | calls are made async, this will likely be made the norm. */ |
| 1390 | |
| 1391 | switch (gdbarch_return_value (gdbarch, func_type, value_type, |
| 1392 | NULL, NULL, NULL)) |
| 1393 | { |
| 1394 | case RETURN_VALUE_REGISTER_CONVENTION: |
| 1395 | case RETURN_VALUE_ABI_RETURNS_ADDRESS: |
| 1396 | case RETURN_VALUE_ABI_PRESERVES_ADDRESS: |
| 1397 | value = allocate_value (value_type); |
| 1398 | gdbarch_return_value (gdbarch, func_type, value_type, stop_registers, |
| 1399 | value_contents_raw (value), NULL); |
| 1400 | break; |
| 1401 | case RETURN_VALUE_STRUCT_CONVENTION: |
| 1402 | value = NULL; |
| 1403 | break; |
| 1404 | default: |
| 1405 | internal_error (__FILE__, __LINE__, _("bad switch")); |
| 1406 | } |
| 1407 | |
| 1408 | if (value) |
| 1409 | { |
| 1410 | struct value_print_options opts; |
| 1411 | |
| 1412 | /* Print it. */ |
| 1413 | stb = ui_out_stream_new (uiout); |
| 1414 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
| 1415 | ui_out_text (uiout, "Value returned is "); |
| 1416 | ui_out_field_fmt (uiout, "gdb-result-var", "$%d", |
| 1417 | record_latest_value (value)); |
| 1418 | ui_out_text (uiout, " = "); |
| 1419 | get_raw_print_options (&opts); |
| 1420 | value_print (value, stb->stream, &opts); |
| 1421 | ui_out_field_stream (uiout, "return-value", stb); |
| 1422 | ui_out_text (uiout, "\n"); |
| 1423 | do_cleanups (old_chain); |
| 1424 | } |
| 1425 | else |
| 1426 | { |
| 1427 | ui_out_text (uiout, "Value returned has type: "); |
| 1428 | ui_out_field_string (uiout, "return-type", TYPE_NAME (value_type)); |
| 1429 | ui_out_text (uiout, "."); |
| 1430 | ui_out_text (uiout, " Cannot determine contents\n"); |
| 1431 | } |
| 1432 | } |
| 1433 | |
| 1434 | /* Stuff that needs to be done by the finish command after the target |
| 1435 | has stopped. In asynchronous mode, we wait for the target to stop |
| 1436 | in the call to poll or select in the event loop, so it is |
| 1437 | impossible to do all the stuff as part of the finish_command |
| 1438 | function itself. The only chance we have to complete this command |
| 1439 | is in fetch_inferior_event, which is called by the event loop as |
| 1440 | soon as it detects that the target has stopped. This function is |
| 1441 | called via the cmd_continuation pointer. */ |
| 1442 | |
| 1443 | struct finish_command_continuation_args |
| 1444 | { |
| 1445 | struct breakpoint *breakpoint; |
| 1446 | struct symbol *function; |
| 1447 | }; |
| 1448 | |
| 1449 | static void |
| 1450 | finish_command_continuation (void *arg) |
| 1451 | { |
| 1452 | struct finish_command_continuation_args *a = arg; |
| 1453 | struct thread_info *tp = NULL; |
| 1454 | bpstat bs = NULL; |
| 1455 | |
| 1456 | if (!ptid_equal (inferior_ptid, null_ptid) |
| 1457 | && target_has_execution |
| 1458 | && is_stopped (inferior_ptid)) |
| 1459 | { |
| 1460 | tp = inferior_thread (); |
| 1461 | bs = tp->control.stop_bpstat; |
| 1462 | } |
| 1463 | |
| 1464 | if (bpstat_find_breakpoint (bs, a->breakpoint) != NULL |
| 1465 | && a->function != NULL) |
| 1466 | { |
| 1467 | struct type *value_type; |
| 1468 | |
| 1469 | value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (a->function)); |
| 1470 | if (!value_type) |
| 1471 | internal_error (__FILE__, __LINE__, |
| 1472 | _("finish_command: function has no target type")); |
| 1473 | |
| 1474 | if (TYPE_CODE (value_type) != TYPE_CODE_VOID) |
| 1475 | { |
| 1476 | volatile struct gdb_exception ex; |
| 1477 | |
| 1478 | TRY_CATCH (ex, RETURN_MASK_ALL) |
| 1479 | { |
| 1480 | /* print_return_value can throw an exception in some |
| 1481 | circumstances. We need to catch this so that we still |
| 1482 | delete the breakpoint. */ |
| 1483 | print_return_value (SYMBOL_TYPE (a->function), value_type); |
| 1484 | } |
| 1485 | if (ex.reason < 0) |
| 1486 | exception_print (gdb_stdout, ex); |
| 1487 | } |
| 1488 | } |
| 1489 | |
| 1490 | /* We suppress normal call of normal_stop observer and do it here so |
| 1491 | that the *stopped notification includes the return value. */ |
| 1492 | if (bs != NULL && tp->control.proceed_to_finish) |
| 1493 | observer_notify_normal_stop (bs, 1 /* print frame */); |
| 1494 | delete_breakpoint (a->breakpoint); |
| 1495 | delete_longjmp_breakpoint (inferior_thread ()->num); |
| 1496 | } |
| 1497 | |
| 1498 | static void |
| 1499 | finish_command_continuation_free_arg (void *arg) |
| 1500 | { |
| 1501 | xfree (arg); |
| 1502 | } |
| 1503 | |
| 1504 | /* finish_backward -- helper function for finish_command. */ |
| 1505 | |
| 1506 | static void |
| 1507 | finish_backward (struct symbol *function) |
| 1508 | { |
| 1509 | struct symtab_and_line sal; |
| 1510 | struct thread_info *tp = inferior_thread (); |
| 1511 | struct breakpoint *breakpoint; |
| 1512 | struct cleanup *old_chain; |
| 1513 | CORE_ADDR pc; |
| 1514 | CORE_ADDR func_addr; |
| 1515 | int back_up; |
| 1516 | |
| 1517 | pc = get_frame_pc (get_current_frame ()); |
| 1518 | |
| 1519 | if (find_pc_partial_function (pc, NULL, &func_addr, NULL) == 0) |
| 1520 | internal_error (__FILE__, __LINE__, |
| 1521 | _("Finish: couldn't find function.")); |
| 1522 | |
| 1523 | sal = find_pc_line (func_addr, 0); |
| 1524 | |
| 1525 | /* We don't need a return value. */ |
| 1526 | tp->control.proceed_to_finish = 0; |
| 1527 | /* Special case: if we're sitting at the function entry point, |
| 1528 | then all we need to do is take a reverse singlestep. We |
| 1529 | don't need to set a breakpoint, and indeed it would do us |
| 1530 | no good to do so. |
| 1531 | |
| 1532 | Note that this can only happen at frame #0, since there's |
| 1533 | no way that a function up the stack can have a return address |
| 1534 | that's equal to its entry point. */ |
| 1535 | |
| 1536 | if (sal.pc != pc) |
| 1537 | { |
| 1538 | struct frame_info *frame = get_selected_frame (NULL); |
| 1539 | struct gdbarch *gdbarch = get_frame_arch (frame); |
| 1540 | |
| 1541 | /* Set breakpoint and continue. */ |
| 1542 | breakpoint = |
| 1543 | set_momentary_breakpoint (gdbarch, sal, |
| 1544 | get_stack_frame_id (frame), |
| 1545 | bp_breakpoint); |
| 1546 | /* Tell the breakpoint to keep quiet. We won't be done |
| 1547 | until we've done another reverse single-step. */ |
| 1548 | breakpoint_set_silent (breakpoint, 1); |
| 1549 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
| 1550 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); |
| 1551 | /* We will be stopped when proceed returns. */ |
| 1552 | back_up = (bpstat_find_breakpoint (tp->control.stop_bpstat, breakpoint) |
| 1553 | != NULL); |
| 1554 | do_cleanups (old_chain); |
| 1555 | } |
| 1556 | else |
| 1557 | back_up = 1; |
| 1558 | if (back_up) |
| 1559 | { |
| 1560 | /* If in fact we hit the step-resume breakpoint (and not |
| 1561 | some other breakpoint), then we're almost there -- |
| 1562 | we just need to back up by one more single-step. */ |
| 1563 | tp->control.step_range_start = tp->control.step_range_end = 1; |
| 1564 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); |
| 1565 | } |
| 1566 | return; |
| 1567 | } |
| 1568 | |
| 1569 | /* finish_forward -- helper function for finish_command. */ |
| 1570 | |
| 1571 | static void |
| 1572 | finish_forward (struct symbol *function, struct frame_info *frame) |
| 1573 | { |
| 1574 | struct gdbarch *gdbarch = get_frame_arch (frame); |
| 1575 | struct symtab_and_line sal; |
| 1576 | struct thread_info *tp = inferior_thread (); |
| 1577 | struct breakpoint *breakpoint; |
| 1578 | struct cleanup *old_chain; |
| 1579 | struct finish_command_continuation_args *cargs; |
| 1580 | int thread = tp->num; |
| 1581 | |
| 1582 | sal = find_pc_line (get_frame_pc (frame), 0); |
| 1583 | sal.pc = get_frame_pc (frame); |
| 1584 | |
| 1585 | breakpoint = set_momentary_breakpoint (gdbarch, sal, |
| 1586 | get_stack_frame_id (frame), |
| 1587 | bp_finish); |
| 1588 | |
| 1589 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
| 1590 | |
| 1591 | set_longjmp_breakpoint (tp, get_frame_id (frame)); |
| 1592 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
| 1593 | |
| 1594 | /* We want stop_registers, please... */ |
| 1595 | tp->control.proceed_to_finish = 1; |
| 1596 | cargs = xmalloc (sizeof (*cargs)); |
| 1597 | |
| 1598 | cargs->breakpoint = breakpoint; |
| 1599 | cargs->function = function; |
| 1600 | add_continuation (tp, finish_command_continuation, cargs, |
| 1601 | finish_command_continuation_free_arg); |
| 1602 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); |
| 1603 | |
| 1604 | discard_cleanups (old_chain); |
| 1605 | if (!target_can_async_p ()) |
| 1606 | do_all_continuations (); |
| 1607 | } |
| 1608 | |
| 1609 | /* "finish": Set a temporary breakpoint at the place the selected |
| 1610 | frame will return to, then continue. */ |
| 1611 | |
| 1612 | static void |
| 1613 | finish_command (char *arg, int from_tty) |
| 1614 | { |
| 1615 | struct frame_info *frame; |
| 1616 | struct symbol *function; |
| 1617 | |
| 1618 | int async_exec = 0; |
| 1619 | |
| 1620 | ERROR_NO_INFERIOR; |
| 1621 | ensure_not_tfind_mode (); |
| 1622 | ensure_valid_thread (); |
| 1623 | ensure_not_running (); |
| 1624 | |
| 1625 | /* Find out whether we must run in the background. */ |
| 1626 | if (arg != NULL) |
| 1627 | async_exec = strip_bg_char (&arg); |
| 1628 | |
| 1629 | /* If we must run in the background, but the target can't do it, |
| 1630 | error out. */ |
| 1631 | if (async_exec && !target_can_async_p ()) |
| 1632 | error (_("Asynchronous execution not supported on this target.")); |
| 1633 | |
| 1634 | /* Don't try to async in reverse. */ |
| 1635 | if (async_exec && execution_direction == EXEC_REVERSE) |
| 1636 | error (_("Asynchronous 'finish' not supported in reverse.")); |
| 1637 | |
| 1638 | /* If we are not asked to run in the bg, then prepare to run in the |
| 1639 | foreground, synchronously. */ |
| 1640 | if (!async_exec && target_can_async_p ()) |
| 1641 | { |
| 1642 | /* Simulate synchronous execution. */ |
| 1643 | async_disable_stdin (); |
| 1644 | } |
| 1645 | |
| 1646 | if (arg) |
| 1647 | error (_("The \"finish\" command does not take any arguments.")); |
| 1648 | |
| 1649 | frame = get_prev_frame (get_selected_frame (_("No selected frame."))); |
| 1650 | if (frame == 0) |
| 1651 | error (_("\"finish\" not meaningful in the outermost frame.")); |
| 1652 | |
| 1653 | clear_proceed_status (); |
| 1654 | |
| 1655 | /* Finishing from an inline frame is completely different. We don't |
| 1656 | try to show the "return value" - no way to locate it. So we do |
| 1657 | not need a completion. */ |
| 1658 | if (get_frame_type (get_selected_frame (_("No selected frame."))) |
| 1659 | == INLINE_FRAME) |
| 1660 | { |
| 1661 | /* Claim we are stepping in the calling frame. An empty step |
| 1662 | range means that we will stop once we aren't in a function |
| 1663 | called by that frame. We don't use the magic "1" value for |
| 1664 | step_range_end, because then infrun will think this is nexti, |
| 1665 | and not step over the rest of this inlined function call. */ |
| 1666 | struct thread_info *tp = inferior_thread (); |
| 1667 | struct symtab_and_line empty_sal; |
| 1668 | |
| 1669 | init_sal (&empty_sal); |
| 1670 | set_step_info (frame, empty_sal); |
| 1671 | tp->control.step_range_start = get_frame_pc (frame); |
| 1672 | tp->control.step_range_end = tp->control.step_range_start; |
| 1673 | tp->control.step_over_calls = STEP_OVER_ALL; |
| 1674 | |
| 1675 | /* Print info on the selected frame, including level number but not |
| 1676 | source. */ |
| 1677 | if (from_tty) |
| 1678 | { |
| 1679 | printf_filtered (_("Run till exit from ")); |
| 1680 | print_stack_frame (get_selected_frame (NULL), 1, LOCATION); |
| 1681 | } |
| 1682 | |
| 1683 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); |
| 1684 | return; |
| 1685 | } |
| 1686 | |
| 1687 | /* Find the function we will return from. */ |
| 1688 | |
| 1689 | function = find_pc_function (get_frame_pc (get_selected_frame (NULL))); |
| 1690 | |
| 1691 | /* Print info on the selected frame, including level number but not |
| 1692 | source. */ |
| 1693 | if (from_tty) |
| 1694 | { |
| 1695 | if (execution_direction == EXEC_REVERSE) |
| 1696 | printf_filtered (_("Run back to call of ")); |
| 1697 | else |
| 1698 | printf_filtered (_("Run till exit from ")); |
| 1699 | |
| 1700 | print_stack_frame (get_selected_frame (NULL), 1, LOCATION); |
| 1701 | } |
| 1702 | |
| 1703 | if (execution_direction == EXEC_REVERSE) |
| 1704 | finish_backward (function); |
| 1705 | else |
| 1706 | finish_forward (function, frame); |
| 1707 | } |
| 1708 | \f |
| 1709 | |
| 1710 | static void |
| 1711 | program_info (char *args, int from_tty) |
| 1712 | { |
| 1713 | bpstat bs; |
| 1714 | int num, stat; |
| 1715 | struct thread_info *tp; |
| 1716 | ptid_t ptid; |
| 1717 | |
| 1718 | if (!target_has_execution) |
| 1719 | { |
| 1720 | printf_filtered (_("The program being debugged is not being run.\n")); |
| 1721 | return; |
| 1722 | } |
| 1723 | |
| 1724 | if (non_stop) |
| 1725 | ptid = inferior_ptid; |
| 1726 | else |
| 1727 | { |
| 1728 | struct target_waitstatus ws; |
| 1729 | |
| 1730 | get_last_target_status (&ptid, &ws); |
| 1731 | } |
| 1732 | |
| 1733 | if (ptid_equal (ptid, null_ptid) || is_exited (ptid)) |
| 1734 | error (_("Invalid selected thread.")); |
| 1735 | else if (is_running (ptid)) |
| 1736 | error (_("Selected thread is running.")); |
| 1737 | |
| 1738 | tp = find_thread_ptid (ptid); |
| 1739 | bs = tp->control.stop_bpstat; |
| 1740 | stat = bpstat_num (&bs, &num); |
| 1741 | |
| 1742 | target_files_info (); |
| 1743 | printf_filtered (_("Program stopped at %s.\n"), |
| 1744 | paddress (target_gdbarch, stop_pc)); |
| 1745 | if (tp->control.stop_step) |
| 1746 | printf_filtered (_("It stopped after being stepped.\n")); |
| 1747 | else if (stat != 0) |
| 1748 | { |
| 1749 | /* There may be several breakpoints in the same place, so this |
| 1750 | isn't as strange as it seems. */ |
| 1751 | while (stat != 0) |
| 1752 | { |
| 1753 | if (stat < 0) |
| 1754 | { |
| 1755 | printf_filtered (_("It stopped at a breakpoint " |
| 1756 | "that has since been deleted.\n")); |
| 1757 | } |
| 1758 | else |
| 1759 | printf_filtered (_("It stopped at breakpoint %d.\n"), num); |
| 1760 | stat = bpstat_num (&bs, &num); |
| 1761 | } |
| 1762 | } |
| 1763 | else if (tp->suspend.stop_signal != TARGET_SIGNAL_0) |
| 1764 | { |
| 1765 | printf_filtered (_("It stopped with signal %s, %s.\n"), |
| 1766 | target_signal_to_name (tp->suspend.stop_signal), |
| 1767 | target_signal_to_string (tp->suspend.stop_signal)); |
| 1768 | } |
| 1769 | |
| 1770 | if (!from_tty) |
| 1771 | { |
| 1772 | printf_filtered (_("Type \"info stack\" or \"info " |
| 1773 | "registers\" for more information.\n")); |
| 1774 | } |
| 1775 | } |
| 1776 | \f |
| 1777 | static void |
| 1778 | environment_info (char *var, int from_tty) |
| 1779 | { |
| 1780 | if (var) |
| 1781 | { |
| 1782 | char *val = get_in_environ (current_inferior ()->environment, var); |
| 1783 | |
| 1784 | if (val) |
| 1785 | { |
| 1786 | puts_filtered (var); |
| 1787 | puts_filtered (" = "); |
| 1788 | puts_filtered (val); |
| 1789 | puts_filtered ("\n"); |
| 1790 | } |
| 1791 | else |
| 1792 | { |
| 1793 | puts_filtered ("Environment variable \""); |
| 1794 | puts_filtered (var); |
| 1795 | puts_filtered ("\" not defined.\n"); |
| 1796 | } |
| 1797 | } |
| 1798 | else |
| 1799 | { |
| 1800 | char **vector = environ_vector (current_inferior ()->environment); |
| 1801 | |
| 1802 | while (*vector) |
| 1803 | { |
| 1804 | puts_filtered (*vector++); |
| 1805 | puts_filtered ("\n"); |
| 1806 | } |
| 1807 | } |
| 1808 | } |
| 1809 | |
| 1810 | static void |
| 1811 | set_environment_command (char *arg, int from_tty) |
| 1812 | { |
| 1813 | char *p, *val, *var; |
| 1814 | int nullset = 0; |
| 1815 | |
| 1816 | if (arg == 0) |
| 1817 | error_no_arg (_("environment variable and value")); |
| 1818 | |
| 1819 | /* Find seperation between variable name and value. */ |
| 1820 | p = (char *) strchr (arg, '='); |
| 1821 | val = (char *) strchr (arg, ' '); |
| 1822 | |
| 1823 | if (p != 0 && val != 0) |
| 1824 | { |
| 1825 | /* We have both a space and an equals. If the space is before the |
| 1826 | equals, walk forward over the spaces til we see a nonspace |
| 1827 | (possibly the equals). */ |
| 1828 | if (p > val) |
| 1829 | while (*val == ' ') |
| 1830 | val++; |
| 1831 | |
| 1832 | /* Now if the = is after the char following the spaces, |
| 1833 | take the char following the spaces. */ |
| 1834 | if (p > val) |
| 1835 | p = val - 1; |
| 1836 | } |
| 1837 | else if (val != 0 && p == 0) |
| 1838 | p = val; |
| 1839 | |
| 1840 | if (p == arg) |
| 1841 | error_no_arg (_("environment variable to set")); |
| 1842 | |
| 1843 | if (p == 0 || p[1] == 0) |
| 1844 | { |
| 1845 | nullset = 1; |
| 1846 | if (p == 0) |
| 1847 | p = arg + strlen (arg); /* So that savestring below will work. */ |
| 1848 | } |
| 1849 | else |
| 1850 | { |
| 1851 | /* Not setting variable value to null. */ |
| 1852 | val = p + 1; |
| 1853 | while (*val == ' ' || *val == '\t') |
| 1854 | val++; |
| 1855 | } |
| 1856 | |
| 1857 | while (p != arg && (p[-1] == ' ' || p[-1] == '\t')) |
| 1858 | p--; |
| 1859 | |
| 1860 | var = savestring (arg, p - arg); |
| 1861 | if (nullset) |
| 1862 | { |
| 1863 | printf_filtered (_("Setting environment variable " |
| 1864 | "\"%s\" to null value.\n"), |
| 1865 | var); |
| 1866 | set_in_environ (current_inferior ()->environment, var, ""); |
| 1867 | } |
| 1868 | else |
| 1869 | set_in_environ (current_inferior ()->environment, var, val); |
| 1870 | xfree (var); |
| 1871 | } |
| 1872 | |
| 1873 | static void |
| 1874 | unset_environment_command (char *var, int from_tty) |
| 1875 | { |
| 1876 | if (var == 0) |
| 1877 | { |
| 1878 | /* If there is no argument, delete all environment variables. |
| 1879 | Ask for confirmation if reading from the terminal. */ |
| 1880 | if (!from_tty || query (_("Delete all environment variables? "))) |
| 1881 | { |
| 1882 | free_environ (current_inferior ()->environment); |
| 1883 | current_inferior ()->environment = make_environ (); |
| 1884 | } |
| 1885 | } |
| 1886 | else |
| 1887 | unset_in_environ (current_inferior ()->environment, var); |
| 1888 | } |
| 1889 | |
| 1890 | /* Handle the execution path (PATH variable). */ |
| 1891 | |
| 1892 | static const char path_var_name[] = "PATH"; |
| 1893 | |
| 1894 | static void |
| 1895 | path_info (char *args, int from_tty) |
| 1896 | { |
| 1897 | puts_filtered ("Executable and object file path: "); |
| 1898 | puts_filtered (get_in_environ (current_inferior ()->environment, |
| 1899 | path_var_name)); |
| 1900 | puts_filtered ("\n"); |
| 1901 | } |
| 1902 | |
| 1903 | /* Add zero or more directories to the front of the execution path. */ |
| 1904 | |
| 1905 | static void |
| 1906 | path_command (char *dirname, int from_tty) |
| 1907 | { |
| 1908 | char *exec_path; |
| 1909 | char *env; |
| 1910 | |
| 1911 | dont_repeat (); |
| 1912 | env = get_in_environ (current_inferior ()->environment, path_var_name); |
| 1913 | /* Can be null if path is not set. */ |
| 1914 | if (!env) |
| 1915 | env = ""; |
| 1916 | exec_path = xstrdup (env); |
| 1917 | mod_path (dirname, &exec_path); |
| 1918 | set_in_environ (current_inferior ()->environment, path_var_name, exec_path); |
| 1919 | xfree (exec_path); |
| 1920 | if (from_tty) |
| 1921 | path_info ((char *) NULL, from_tty); |
| 1922 | } |
| 1923 | \f |
| 1924 | |
| 1925 | /* Print out the machine register regnum. If regnum is -1, print all |
| 1926 | registers (print_all == 1) or all non-float and non-vector |
| 1927 | registers (print_all == 0). |
| 1928 | |
| 1929 | For most machines, having all_registers_info() print the |
| 1930 | register(s) one per line is good enough. If a different format is |
| 1931 | required, (eg, for MIPS or Pyramid 90x, which both have lots of |
| 1932 | regs), or there is an existing convention for showing all the |
| 1933 | registers, define the architecture method PRINT_REGISTERS_INFO to |
| 1934 | provide that format. */ |
| 1935 | |
| 1936 | void |
| 1937 | default_print_registers_info (struct gdbarch *gdbarch, |
| 1938 | struct ui_file *file, |
| 1939 | struct frame_info *frame, |
| 1940 | int regnum, int print_all) |
| 1941 | { |
| 1942 | int i; |
| 1943 | const int numregs = gdbarch_num_regs (gdbarch) |
| 1944 | + gdbarch_num_pseudo_regs (gdbarch); |
| 1945 | |
| 1946 | for (i = 0; i < numregs; i++) |
| 1947 | { |
| 1948 | struct type *regtype; |
| 1949 | struct value *val; |
| 1950 | |
| 1951 | /* Decide between printing all regs, non-float / vector regs, or |
| 1952 | specific reg. */ |
| 1953 | if (regnum == -1) |
| 1954 | { |
| 1955 | if (print_all) |
| 1956 | { |
| 1957 | if (!gdbarch_register_reggroup_p (gdbarch, i, all_reggroup)) |
| 1958 | continue; |
| 1959 | } |
| 1960 | else |
| 1961 | { |
| 1962 | if (!gdbarch_register_reggroup_p (gdbarch, i, general_reggroup)) |
| 1963 | continue; |
| 1964 | } |
| 1965 | } |
| 1966 | else |
| 1967 | { |
| 1968 | if (i != regnum) |
| 1969 | continue; |
| 1970 | } |
| 1971 | |
| 1972 | /* If the register name is empty, it is undefined for this |
| 1973 | processor, so don't display anything. */ |
| 1974 | if (gdbarch_register_name (gdbarch, i) == NULL |
| 1975 | || *(gdbarch_register_name (gdbarch, i)) == '\0') |
| 1976 | continue; |
| 1977 | |
| 1978 | fputs_filtered (gdbarch_register_name (gdbarch, i), file); |
| 1979 | print_spaces_filtered (15 - strlen (gdbarch_register_name |
| 1980 | (gdbarch, i)), file); |
| 1981 | |
| 1982 | regtype = register_type (gdbarch, i); |
| 1983 | val = allocate_value (regtype); |
| 1984 | |
| 1985 | /* Get the data in raw format. */ |
| 1986 | if (! frame_register_read (frame, i, value_contents_raw (val))) |
| 1987 | { |
| 1988 | fprintf_filtered (file, "*value not available*\n"); |
| 1989 | continue; |
| 1990 | } |
| 1991 | |
| 1992 | /* If virtual format is floating, print it that way, and in raw |
| 1993 | hex. */ |
| 1994 | if (TYPE_CODE (regtype) == TYPE_CODE_FLT |
| 1995 | || TYPE_CODE (regtype) == TYPE_CODE_DECFLOAT) |
| 1996 | { |
| 1997 | int j; |
| 1998 | struct value_print_options opts; |
| 1999 | const gdb_byte *valaddr = value_contents_for_printing (val); |
| 2000 | |
| 2001 | get_user_print_options (&opts); |
| 2002 | opts.deref_ref = 1; |
| 2003 | |
| 2004 | val_print (regtype, |
| 2005 | value_contents_for_printing (val), |
| 2006 | value_embedded_offset (val), 0, |
| 2007 | file, 0, val, &opts, current_language); |
| 2008 | |
| 2009 | fprintf_filtered (file, "\t(raw 0x"); |
| 2010 | for (j = 0; j < register_size (gdbarch, i); j++) |
| 2011 | { |
| 2012 | int idx; |
| 2013 | |
| 2014 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
| 2015 | idx = j; |
| 2016 | else |
| 2017 | idx = register_size (gdbarch, i) - 1 - j; |
| 2018 | fprintf_filtered (file, "%02x", (unsigned char) valaddr[idx]); |
| 2019 | } |
| 2020 | fprintf_filtered (file, ")"); |
| 2021 | } |
| 2022 | else |
| 2023 | { |
| 2024 | struct value_print_options opts; |
| 2025 | |
| 2026 | /* Print the register in hex. */ |
| 2027 | get_formatted_print_options (&opts, 'x'); |
| 2028 | opts.deref_ref = 1; |
| 2029 | val_print (regtype, |
| 2030 | value_contents_for_printing (val), |
| 2031 | value_embedded_offset (val), 0, |
| 2032 | file, 0, val, &opts, current_language); |
| 2033 | /* If not a vector register, print it also according to its |
| 2034 | natural format. */ |
| 2035 | if (TYPE_VECTOR (regtype) == 0) |
| 2036 | { |
| 2037 | get_user_print_options (&opts); |
| 2038 | opts.deref_ref = 1; |
| 2039 | fprintf_filtered (file, "\t"); |
| 2040 | val_print (regtype, |
| 2041 | value_contents_for_printing (val), |
| 2042 | value_embedded_offset (val), 0, |
| 2043 | file, 0, val, &opts, current_language); |
| 2044 | } |
| 2045 | } |
| 2046 | |
| 2047 | fprintf_filtered (file, "\n"); |
| 2048 | } |
| 2049 | } |
| 2050 | |
| 2051 | void |
| 2052 | registers_info (char *addr_exp, int fpregs) |
| 2053 | { |
| 2054 | struct frame_info *frame; |
| 2055 | struct gdbarch *gdbarch; |
| 2056 | |
| 2057 | if (!target_has_registers) |
| 2058 | error (_("The program has no registers now.")); |
| 2059 | frame = get_selected_frame (NULL); |
| 2060 | gdbarch = get_frame_arch (frame); |
| 2061 | |
| 2062 | if (!addr_exp) |
| 2063 | { |
| 2064 | gdbarch_print_registers_info (gdbarch, gdb_stdout, |
| 2065 | frame, -1, fpregs); |
| 2066 | return; |
| 2067 | } |
| 2068 | |
| 2069 | while (*addr_exp != '\0') |
| 2070 | { |
| 2071 | char *start; |
| 2072 | const char *end; |
| 2073 | |
| 2074 | /* Keep skipping leading white space. */ |
| 2075 | if (isspace ((*addr_exp))) |
| 2076 | { |
| 2077 | addr_exp++; |
| 2078 | continue; |
| 2079 | } |
| 2080 | |
| 2081 | /* Discard any leading ``$''. Check that there is something |
| 2082 | resembling a register following it. */ |
| 2083 | if (addr_exp[0] == '$') |
| 2084 | addr_exp++; |
| 2085 | if (isspace ((*addr_exp)) || (*addr_exp) == '\0') |
| 2086 | error (_("Missing register name")); |
| 2087 | |
| 2088 | /* Find the start/end of this register name/num/group. */ |
| 2089 | start = addr_exp; |
| 2090 | while ((*addr_exp) != '\0' && !isspace ((*addr_exp))) |
| 2091 | addr_exp++; |
| 2092 | end = addr_exp; |
| 2093 | |
| 2094 | /* Figure out what we've found and display it. */ |
| 2095 | |
| 2096 | /* A register name? */ |
| 2097 | { |
| 2098 | int regnum = user_reg_map_name_to_regnum (gdbarch, start, end - start); |
| 2099 | |
| 2100 | if (regnum >= 0) |
| 2101 | { |
| 2102 | /* User registers lie completely outside of the range of |
| 2103 | normal registers. Catch them early so that the target |
| 2104 | never sees them. */ |
| 2105 | if (regnum >= gdbarch_num_regs (gdbarch) |
| 2106 | + gdbarch_num_pseudo_regs (gdbarch)) |
| 2107 | { |
| 2108 | struct value_print_options opts; |
| 2109 | struct value *val = value_of_user_reg (regnum, frame); |
| 2110 | |
| 2111 | printf_filtered ("%s: ", start); |
| 2112 | get_formatted_print_options (&opts, 'x'); |
| 2113 | val_print_scalar_formatted (check_typedef (value_type (val)), |
| 2114 | value_contents_for_printing (val), |
| 2115 | value_embedded_offset (val), |
| 2116 | val, |
| 2117 | &opts, 0, gdb_stdout); |
| 2118 | printf_filtered ("\n"); |
| 2119 | } |
| 2120 | else |
| 2121 | gdbarch_print_registers_info (gdbarch, gdb_stdout, |
| 2122 | frame, regnum, fpregs); |
| 2123 | continue; |
| 2124 | } |
| 2125 | } |
| 2126 | |
| 2127 | /* A register group? */ |
| 2128 | { |
| 2129 | struct reggroup *group; |
| 2130 | |
| 2131 | for (group = reggroup_next (gdbarch, NULL); |
| 2132 | group != NULL; |
| 2133 | group = reggroup_next (gdbarch, group)) |
| 2134 | { |
| 2135 | /* Don't bother with a length check. Should the user |
| 2136 | enter a short register group name, go with the first |
| 2137 | group that matches. */ |
| 2138 | if (strncmp (start, reggroup_name (group), end - start) == 0) |
| 2139 | break; |
| 2140 | } |
| 2141 | if (group != NULL) |
| 2142 | { |
| 2143 | int regnum; |
| 2144 | |
| 2145 | for (regnum = 0; |
| 2146 | regnum < gdbarch_num_regs (gdbarch) |
| 2147 | + gdbarch_num_pseudo_regs (gdbarch); |
| 2148 | regnum++) |
| 2149 | { |
| 2150 | if (gdbarch_register_reggroup_p (gdbarch, regnum, group)) |
| 2151 | gdbarch_print_registers_info (gdbarch, |
| 2152 | gdb_stdout, frame, |
| 2153 | regnum, fpregs); |
| 2154 | } |
| 2155 | continue; |
| 2156 | } |
| 2157 | } |
| 2158 | |
| 2159 | /* Nothing matched. */ |
| 2160 | error (_("Invalid register `%.*s'"), (int) (end - start), start); |
| 2161 | } |
| 2162 | } |
| 2163 | |
| 2164 | void |
| 2165 | all_registers_info (char *addr_exp, int from_tty) |
| 2166 | { |
| 2167 | registers_info (addr_exp, 1); |
| 2168 | } |
| 2169 | |
| 2170 | static void |
| 2171 | nofp_registers_info (char *addr_exp, int from_tty) |
| 2172 | { |
| 2173 | registers_info (addr_exp, 0); |
| 2174 | } |
| 2175 | |
| 2176 | static void |
| 2177 | print_vector_info (struct ui_file *file, |
| 2178 | struct frame_info *frame, const char *args) |
| 2179 | { |
| 2180 | struct gdbarch *gdbarch = get_frame_arch (frame); |
| 2181 | |
| 2182 | if (gdbarch_print_vector_info_p (gdbarch)) |
| 2183 | gdbarch_print_vector_info (gdbarch, file, frame, args); |
| 2184 | else |
| 2185 | { |
| 2186 | int regnum; |
| 2187 | int printed_something = 0; |
| 2188 | |
| 2189 | for (regnum = 0; |
| 2190 | regnum < gdbarch_num_regs (gdbarch) |
| 2191 | + gdbarch_num_pseudo_regs (gdbarch); |
| 2192 | regnum++) |
| 2193 | { |
| 2194 | if (gdbarch_register_reggroup_p (gdbarch, regnum, vector_reggroup)) |
| 2195 | { |
| 2196 | printed_something = 1; |
| 2197 | gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1); |
| 2198 | } |
| 2199 | } |
| 2200 | if (!printed_something) |
| 2201 | fprintf_filtered (file, "No vector information\n"); |
| 2202 | } |
| 2203 | } |
| 2204 | |
| 2205 | static void |
| 2206 | vector_info (char *args, int from_tty) |
| 2207 | { |
| 2208 | if (!target_has_registers) |
| 2209 | error (_("The program has no registers now.")); |
| 2210 | |
| 2211 | print_vector_info (gdb_stdout, get_selected_frame (NULL), args); |
| 2212 | } |
| 2213 | \f |
| 2214 | /* Kill the inferior process. Make us have no inferior. */ |
| 2215 | |
| 2216 | static void |
| 2217 | kill_command (char *arg, int from_tty) |
| 2218 | { |
| 2219 | /* FIXME: This should not really be inferior_ptid (or target_has_execution). |
| 2220 | It should be a distinct flag that indicates that a target is active, cuz |
| 2221 | some targets don't have processes! */ |
| 2222 | |
| 2223 | if (ptid_equal (inferior_ptid, null_ptid)) |
| 2224 | error (_("The program is not being run.")); |
| 2225 | if (!query (_("Kill the program being debugged? "))) |
| 2226 | error (_("Not confirmed.")); |
| 2227 | target_kill (); |
| 2228 | |
| 2229 | /* If we still have other inferiors to debug, then don't mess with |
| 2230 | with their threads. */ |
| 2231 | if (!have_inferiors ()) |
| 2232 | { |
| 2233 | init_thread_list (); /* Destroy thread info. */ |
| 2234 | |
| 2235 | /* Killing off the inferior can leave us with a core file. If |
| 2236 | so, print the state we are left in. */ |
| 2237 | if (target_has_stack) |
| 2238 | { |
| 2239 | printf_filtered (_("In %s,\n"), target_longname); |
| 2240 | print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC); |
| 2241 | } |
| 2242 | } |
| 2243 | bfd_cache_close_all (); |
| 2244 | } |
| 2245 | |
| 2246 | /* Used in `attach&' command. ARG is a point to an integer |
| 2247 | representing a process id. Proceed threads of this process iff |
| 2248 | they stopped due to debugger request, and when they did, they |
| 2249 | reported a clean stop (TARGET_SIGNAL_0). Do not proceed threads |
| 2250 | that have been explicitly been told to stop. */ |
| 2251 | |
| 2252 | static int |
| 2253 | proceed_after_attach_callback (struct thread_info *thread, |
| 2254 | void *arg) |
| 2255 | { |
| 2256 | int pid = * (int *) arg; |
| 2257 | |
| 2258 | if (ptid_get_pid (thread->ptid) == pid |
| 2259 | && !is_exited (thread->ptid) |
| 2260 | && !is_executing (thread->ptid) |
| 2261 | && !thread->stop_requested |
| 2262 | && thread->suspend.stop_signal == TARGET_SIGNAL_0) |
| 2263 | { |
| 2264 | switch_to_thread (thread->ptid); |
| 2265 | clear_proceed_status (); |
| 2266 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); |
| 2267 | } |
| 2268 | |
| 2269 | return 0; |
| 2270 | } |
| 2271 | |
| 2272 | static void |
| 2273 | proceed_after_attach (int pid) |
| 2274 | { |
| 2275 | /* Don't error out if the current thread is running, because |
| 2276 | there may be other stopped threads. */ |
| 2277 | struct cleanup *old_chain; |
| 2278 | |
| 2279 | /* Backup current thread and selected frame. */ |
| 2280 | old_chain = make_cleanup_restore_current_thread (); |
| 2281 | |
| 2282 | iterate_over_threads (proceed_after_attach_callback, &pid); |
| 2283 | |
| 2284 | /* Restore selected ptid. */ |
| 2285 | do_cleanups (old_chain); |
| 2286 | } |
| 2287 | |
| 2288 | /* |
| 2289 | * TODO: |
| 2290 | * Should save/restore the tty state since it might be that the |
| 2291 | * program to be debugged was started on this tty and it wants |
| 2292 | * the tty in some state other than what we want. If it's running |
| 2293 | * on another terminal or without a terminal, then saving and |
| 2294 | * restoring the tty state is a harmless no-op. |
| 2295 | * This only needs to be done if we are attaching to a process. |
| 2296 | */ |
| 2297 | |
| 2298 | /* attach_command -- |
| 2299 | takes a program started up outside of gdb and ``attaches'' to it. |
| 2300 | This stops it cold in its tracks and allows us to start debugging it. |
| 2301 | and wait for the trace-trap that results from attaching. */ |
| 2302 | |
| 2303 | static void |
| 2304 | attach_command_post_wait (char *args, int from_tty, int async_exec) |
| 2305 | { |
| 2306 | char *exec_file; |
| 2307 | char *full_exec_path = NULL; |
| 2308 | struct inferior *inferior; |
| 2309 | |
| 2310 | inferior = current_inferior (); |
| 2311 | inferior->control.stop_soon = NO_STOP_QUIETLY; |
| 2312 | |
| 2313 | /* If no exec file is yet known, try to determine it from the |
| 2314 | process itself. */ |
| 2315 | exec_file = (char *) get_exec_file (0); |
| 2316 | if (!exec_file) |
| 2317 | { |
| 2318 | exec_file = target_pid_to_exec_file (PIDGET (inferior_ptid)); |
| 2319 | if (exec_file) |
| 2320 | { |
| 2321 | /* It's possible we don't have a full path, but rather just a |
| 2322 | filename. Some targets, such as HP-UX, don't provide the |
| 2323 | full path, sigh. |
| 2324 | |
| 2325 | Attempt to qualify the filename against the source path. |
| 2326 | (If that fails, we'll just fall back on the original |
| 2327 | filename. Not much more we can do...) */ |
| 2328 | |
| 2329 | if (!source_full_path_of (exec_file, &full_exec_path)) |
| 2330 | full_exec_path = xstrdup (exec_file); |
| 2331 | |
| 2332 | exec_file_attach (full_exec_path, from_tty); |
| 2333 | symbol_file_add_main (full_exec_path, from_tty); |
| 2334 | } |
| 2335 | } |
| 2336 | else |
| 2337 | { |
| 2338 | reopen_exec_file (); |
| 2339 | reread_symbols (); |
| 2340 | } |
| 2341 | |
| 2342 | /* Take any necessary post-attaching actions for this platform. */ |
| 2343 | target_post_attach (PIDGET (inferior_ptid)); |
| 2344 | |
| 2345 | post_create_inferior (¤t_target, from_tty); |
| 2346 | |
| 2347 | /* Install inferior's terminal modes. */ |
| 2348 | target_terminal_inferior (); |
| 2349 | |
| 2350 | if (async_exec) |
| 2351 | { |
| 2352 | /* The user requested an `attach&', so be sure to leave threads |
| 2353 | that didn't get a signal running. */ |
| 2354 | |
| 2355 | /* Immediatelly resume all suspended threads of this inferior, |
| 2356 | and this inferior only. This should have no effect on |
| 2357 | already running threads. If a thread has been stopped with a |
| 2358 | signal, leave it be. */ |
| 2359 | if (non_stop) |
| 2360 | proceed_after_attach (inferior->pid); |
| 2361 | else |
| 2362 | { |
| 2363 | if (inferior_thread ()->suspend.stop_signal == TARGET_SIGNAL_0) |
| 2364 | { |
| 2365 | clear_proceed_status (); |
| 2366 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); |
| 2367 | } |
| 2368 | } |
| 2369 | } |
| 2370 | else |
| 2371 | { |
| 2372 | /* The user requested a plain `attach', so be sure to leave |
| 2373 | the inferior stopped. */ |
| 2374 | |
| 2375 | if (target_can_async_p ()) |
| 2376 | async_enable_stdin (); |
| 2377 | |
| 2378 | /* At least the current thread is already stopped. */ |
| 2379 | |
| 2380 | /* In all-stop, by definition, all threads have to be already |
| 2381 | stopped at this point. In non-stop, however, although the |
| 2382 | selected thread is stopped, others may still be executing. |
| 2383 | Be sure to explicitly stop all threads of the process. This |
| 2384 | should have no effect on already stopped threads. */ |
| 2385 | if (non_stop) |
| 2386 | target_stop (pid_to_ptid (inferior->pid)); |
| 2387 | |
| 2388 | /* Tell the user/frontend where we're stopped. */ |
| 2389 | normal_stop (); |
| 2390 | if (deprecated_attach_hook) |
| 2391 | deprecated_attach_hook (); |
| 2392 | } |
| 2393 | } |
| 2394 | |
| 2395 | struct attach_command_continuation_args |
| 2396 | { |
| 2397 | char *args; |
| 2398 | int from_tty; |
| 2399 | int async_exec; |
| 2400 | }; |
| 2401 | |
| 2402 | static void |
| 2403 | attach_command_continuation (void *args) |
| 2404 | { |
| 2405 | struct attach_command_continuation_args *a = args; |
| 2406 | |
| 2407 | attach_command_post_wait (a->args, a->from_tty, a->async_exec); |
| 2408 | } |
| 2409 | |
| 2410 | static void |
| 2411 | attach_command_continuation_free_args (void *args) |
| 2412 | { |
| 2413 | struct attach_command_continuation_args *a = args; |
| 2414 | |
| 2415 | xfree (a->args); |
| 2416 | xfree (a); |
| 2417 | } |
| 2418 | |
| 2419 | void |
| 2420 | attach_command (char *args, int from_tty) |
| 2421 | { |
| 2422 | int async_exec = 0; |
| 2423 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); |
| 2424 | |
| 2425 | dont_repeat (); /* Not for the faint of heart */ |
| 2426 | |
| 2427 | if (gdbarch_has_global_solist (target_gdbarch)) |
| 2428 | /* Don't complain if all processes share the same symbol |
| 2429 | space. */ |
| 2430 | ; |
| 2431 | else if (target_has_execution) |
| 2432 | { |
| 2433 | if (query (_("A program is being debugged already. Kill it? "))) |
| 2434 | target_kill (); |
| 2435 | else |
| 2436 | error (_("Not killed.")); |
| 2437 | } |
| 2438 | |
| 2439 | /* Clean up any leftovers from other runs. Some other things from |
| 2440 | this function should probably be moved into target_pre_inferior. */ |
| 2441 | target_pre_inferior (from_tty); |
| 2442 | |
| 2443 | if (non_stop && !target_supports_non_stop ()) |
| 2444 | error (_("Cannot attach to this target in non-stop mode")); |
| 2445 | |
| 2446 | if (args) |
| 2447 | { |
| 2448 | async_exec = strip_bg_char (&args); |
| 2449 | |
| 2450 | /* If we get a request for running in the bg but the target |
| 2451 | doesn't support it, error out. */ |
| 2452 | if (async_exec && !target_can_async_p ()) |
| 2453 | error (_("Asynchronous execution not supported on this target.")); |
| 2454 | } |
| 2455 | |
| 2456 | /* If we don't get a request of running in the bg, then we need |
| 2457 | to simulate synchronous (fg) execution. */ |
| 2458 | if (!async_exec && target_can_async_p ()) |
| 2459 | { |
| 2460 | /* Simulate synchronous execution. */ |
| 2461 | async_disable_stdin (); |
| 2462 | make_cleanup ((make_cleanup_ftype *)async_enable_stdin, NULL); |
| 2463 | } |
| 2464 | |
| 2465 | target_attach (args, from_tty); |
| 2466 | |
| 2467 | /* Set up the "saved terminal modes" of the inferior |
| 2468 | based on what modes we are starting it with. */ |
| 2469 | target_terminal_init (); |
| 2470 | |
| 2471 | /* Set up execution context to know that we should return from |
| 2472 | wait_for_inferior as soon as the target reports a stop. */ |
| 2473 | init_wait_for_inferior (); |
| 2474 | clear_proceed_status (); |
| 2475 | |
| 2476 | if (non_stop) |
| 2477 | { |
| 2478 | /* If we find that the current thread isn't stopped, explicitly |
| 2479 | do so now, because we're going to install breakpoints and |
| 2480 | poke at memory. */ |
| 2481 | |
| 2482 | if (async_exec) |
| 2483 | /* The user requested an `attach&'; stop just one thread. */ |
| 2484 | target_stop (inferior_ptid); |
| 2485 | else |
| 2486 | /* The user requested an `attach', so stop all threads of this |
| 2487 | inferior. */ |
| 2488 | target_stop (pid_to_ptid (ptid_get_pid (inferior_ptid))); |
| 2489 | } |
| 2490 | |
| 2491 | /* Some system don't generate traps when attaching to inferior. |
| 2492 | E.g. Mach 3 or GNU hurd. */ |
| 2493 | if (!target_attach_no_wait) |
| 2494 | { |
| 2495 | struct inferior *inferior = current_inferior (); |
| 2496 | |
| 2497 | /* Careful here. See comments in inferior.h. Basically some |
| 2498 | OSes don't ignore SIGSTOPs on continue requests anymore. We |
| 2499 | need a way for handle_inferior_event to reset the stop_signal |
| 2500 | variable after an attach, and this is what |
| 2501 | STOP_QUIETLY_NO_SIGSTOP is for. */ |
| 2502 | inferior->control.stop_soon = STOP_QUIETLY_NO_SIGSTOP; |
| 2503 | |
| 2504 | if (target_can_async_p ()) |
| 2505 | { |
| 2506 | /* sync_execution mode. Wait for stop. */ |
| 2507 | struct attach_command_continuation_args *a; |
| 2508 | |
| 2509 | a = xmalloc (sizeof (*a)); |
| 2510 | a->args = xstrdup (args); |
| 2511 | a->from_tty = from_tty; |
| 2512 | a->async_exec = async_exec; |
| 2513 | add_inferior_continuation (attach_command_continuation, a, |
| 2514 | attach_command_continuation_free_args); |
| 2515 | discard_cleanups (back_to); |
| 2516 | return; |
| 2517 | } |
| 2518 | |
| 2519 | wait_for_inferior (0); |
| 2520 | } |
| 2521 | |
| 2522 | attach_command_post_wait (args, from_tty, async_exec); |
| 2523 | discard_cleanups (back_to); |
| 2524 | } |
| 2525 | |
| 2526 | /* We had just found out that the target was already attached to an |
| 2527 | inferior. PTID points at a thread of this new inferior, that is |
| 2528 | the most likely to be stopped right now, but not necessarily so. |
| 2529 | The new inferior is assumed to be already added to the inferior |
| 2530 | list at this point. If LEAVE_RUNNING, then leave the threads of |
| 2531 | this inferior running, except those we've explicitly seen reported |
| 2532 | as stopped. */ |
| 2533 | |
| 2534 | void |
| 2535 | notice_new_inferior (ptid_t ptid, int leave_running, int from_tty) |
| 2536 | { |
| 2537 | struct cleanup* old_chain; |
| 2538 | int async_exec; |
| 2539 | |
| 2540 | old_chain = make_cleanup (null_cleanup, NULL); |
| 2541 | |
| 2542 | /* If in non-stop, leave threads as running as they were. If |
| 2543 | they're stopped for some reason other than us telling it to, the |
| 2544 | target reports a signal != TARGET_SIGNAL_0. We don't try to |
| 2545 | resume threads with such a stop signal. */ |
| 2546 | async_exec = non_stop; |
| 2547 | |
| 2548 | if (!ptid_equal (inferior_ptid, null_ptid)) |
| 2549 | make_cleanup_restore_current_thread (); |
| 2550 | |
| 2551 | switch_to_thread (ptid); |
| 2552 | |
| 2553 | /* When we "notice" a new inferior we need to do all the things we |
| 2554 | would normally do if we had just attached to it. */ |
| 2555 | |
| 2556 | if (is_executing (inferior_ptid)) |
| 2557 | { |
| 2558 | struct inferior *inferior = current_inferior (); |
| 2559 | |
| 2560 | /* We're going to install breakpoints, and poke at memory, |
| 2561 | ensure that the inferior is stopped for a moment while we do |
| 2562 | that. */ |
| 2563 | target_stop (inferior_ptid); |
| 2564 | |
| 2565 | inferior->control.stop_soon = STOP_QUIETLY_REMOTE; |
| 2566 | |
| 2567 | /* Wait for stop before proceeding. */ |
| 2568 | if (target_can_async_p ()) |
| 2569 | { |
| 2570 | struct attach_command_continuation_args *a; |
| 2571 | |
| 2572 | a = xmalloc (sizeof (*a)); |
| 2573 | a->args = xstrdup (""); |
| 2574 | a->from_tty = from_tty; |
| 2575 | a->async_exec = async_exec; |
| 2576 | add_inferior_continuation (attach_command_continuation, a, |
| 2577 | attach_command_continuation_free_args); |
| 2578 | |
| 2579 | do_cleanups (old_chain); |
| 2580 | return; |
| 2581 | } |
| 2582 | else |
| 2583 | wait_for_inferior (0); |
| 2584 | } |
| 2585 | |
| 2586 | async_exec = leave_running; |
| 2587 | attach_command_post_wait ("" /* args */, from_tty, async_exec); |
| 2588 | |
| 2589 | do_cleanups (old_chain); |
| 2590 | } |
| 2591 | |
| 2592 | /* |
| 2593 | * detach_command -- |
| 2594 | * takes a program previously attached to and detaches it. |
| 2595 | * The program resumes execution and will no longer stop |
| 2596 | * on signals, etc. We better not have left any breakpoints |
| 2597 | * in the program or it'll die when it hits one. For this |
| 2598 | * to work, it may be necessary for the process to have been |
| 2599 | * previously attached. It *might* work if the program was |
| 2600 | * started via the normal ptrace (PTRACE_TRACEME). |
| 2601 | */ |
| 2602 | |
| 2603 | void |
| 2604 | detach_command (char *args, int from_tty) |
| 2605 | { |
| 2606 | dont_repeat (); /* Not for the faint of heart. */ |
| 2607 | |
| 2608 | if (ptid_equal (inferior_ptid, null_ptid)) |
| 2609 | error (_("The program is not being run.")); |
| 2610 | |
| 2611 | disconnect_tracing (from_tty); |
| 2612 | |
| 2613 | target_detach (args, from_tty); |
| 2614 | |
| 2615 | /* If the solist is global across inferiors, don't clear it when we |
| 2616 | detach from a single inferior. */ |
| 2617 | if (!gdbarch_has_global_solist (target_gdbarch)) |
| 2618 | no_shared_libraries (NULL, from_tty); |
| 2619 | |
| 2620 | /* If we still have inferiors to debug, then don't mess with their |
| 2621 | threads. */ |
| 2622 | if (!have_inferiors ()) |
| 2623 | init_thread_list (); |
| 2624 | |
| 2625 | if (deprecated_detach_hook) |
| 2626 | deprecated_detach_hook (); |
| 2627 | } |
| 2628 | |
| 2629 | /* Disconnect from the current target without resuming it (leaving it |
| 2630 | waiting for a debugger). |
| 2631 | |
| 2632 | We'd better not have left any breakpoints in the program or the |
| 2633 | next debugger will get confused. Currently only supported for some |
| 2634 | remote targets, since the normal attach mechanisms don't work on |
| 2635 | stopped processes on some native platforms (e.g. GNU/Linux). */ |
| 2636 | |
| 2637 | static void |
| 2638 | disconnect_command (char *args, int from_tty) |
| 2639 | { |
| 2640 | dont_repeat (); /* Not for the faint of heart. */ |
| 2641 | target_disconnect (args, from_tty); |
| 2642 | no_shared_libraries (NULL, from_tty); |
| 2643 | init_thread_list (); |
| 2644 | if (deprecated_detach_hook) |
| 2645 | deprecated_detach_hook (); |
| 2646 | } |
| 2647 | |
| 2648 | void |
| 2649 | interrupt_target_1 (int all_threads) |
| 2650 | { |
| 2651 | ptid_t ptid; |
| 2652 | |
| 2653 | if (all_threads) |
| 2654 | ptid = minus_one_ptid; |
| 2655 | else |
| 2656 | ptid = inferior_ptid; |
| 2657 | target_stop (ptid); |
| 2658 | |
| 2659 | /* Tag the thread as having been explicitly requested to stop, so |
| 2660 | other parts of gdb know not to resume this thread automatically, |
| 2661 | if it was stopped due to an internal event. Limit this to |
| 2662 | non-stop mode, as when debugging a multi-threaded application in |
| 2663 | all-stop mode, we will only get one stop event --- it's undefined |
| 2664 | which thread will report the event. */ |
| 2665 | if (non_stop) |
| 2666 | set_stop_requested (ptid, 1); |
| 2667 | } |
| 2668 | |
| 2669 | /* Stop the execution of the target while running in async mode, in |
| 2670 | the backgound. In all-stop, stop the whole process. In non-stop |
| 2671 | mode, stop the current thread only by default, or stop all threads |
| 2672 | if the `-a' switch is used. */ |
| 2673 | |
| 2674 | /* interrupt [-a] */ |
| 2675 | void |
| 2676 | interrupt_target_command (char *args, int from_tty) |
| 2677 | { |
| 2678 | if (target_can_async_p ()) |
| 2679 | { |
| 2680 | int all_threads = 0; |
| 2681 | |
| 2682 | dont_repeat (); /* Not for the faint of heart. */ |
| 2683 | |
| 2684 | if (args != NULL |
| 2685 | && strncmp (args, "-a", sizeof ("-a") - 1) == 0) |
| 2686 | all_threads = 1; |
| 2687 | |
| 2688 | if (!non_stop && all_threads) |
| 2689 | error (_("-a is meaningless in all-stop mode.")); |
| 2690 | |
| 2691 | interrupt_target_1 (all_threads); |
| 2692 | } |
| 2693 | } |
| 2694 | |
| 2695 | static void |
| 2696 | print_float_info (struct ui_file *file, |
| 2697 | struct frame_info *frame, const char *args) |
| 2698 | { |
| 2699 | struct gdbarch *gdbarch = get_frame_arch (frame); |
| 2700 | |
| 2701 | if (gdbarch_print_float_info_p (gdbarch)) |
| 2702 | gdbarch_print_float_info (gdbarch, file, frame, args); |
| 2703 | else |
| 2704 | { |
| 2705 | int regnum; |
| 2706 | int printed_something = 0; |
| 2707 | |
| 2708 | for (regnum = 0; |
| 2709 | regnum < gdbarch_num_regs (gdbarch) |
| 2710 | + gdbarch_num_pseudo_regs (gdbarch); |
| 2711 | regnum++) |
| 2712 | { |
| 2713 | if (gdbarch_register_reggroup_p (gdbarch, regnum, float_reggroup)) |
| 2714 | { |
| 2715 | printed_something = 1; |
| 2716 | gdbarch_print_registers_info (gdbarch, file, frame, regnum, 1); |
| 2717 | } |
| 2718 | } |
| 2719 | if (!printed_something) |
| 2720 | fprintf_filtered (file, "No floating-point info " |
| 2721 | "available for this processor.\n"); |
| 2722 | } |
| 2723 | } |
| 2724 | |
| 2725 | static void |
| 2726 | float_info (char *args, int from_tty) |
| 2727 | { |
| 2728 | if (!target_has_registers) |
| 2729 | error (_("The program has no registers now.")); |
| 2730 | |
| 2731 | print_float_info (gdb_stdout, get_selected_frame (NULL), args); |
| 2732 | } |
| 2733 | \f |
| 2734 | static void |
| 2735 | unset_command (char *args, int from_tty) |
| 2736 | { |
| 2737 | printf_filtered (_("\"unset\" must be followed by the " |
| 2738 | "name of an unset subcommand.\n")); |
| 2739 | help_list (unsetlist, "unset ", -1, gdb_stdout); |
| 2740 | } |
| 2741 | |
| 2742 | void |
| 2743 | _initialize_infcmd (void) |
| 2744 | { |
| 2745 | struct cmd_list_element *c = NULL; |
| 2746 | |
| 2747 | /* Add the filename of the terminal connected to inferior I/O. */ |
| 2748 | add_setshow_filename_cmd ("inferior-tty", class_run, |
| 2749 | &inferior_io_terminal_scratch, _("\ |
| 2750 | Set terminal for future runs of program being debugged."), _("\ |
| 2751 | Show terminal for future runs of program being debugged."), _("\ |
| 2752 | Usage: set inferior-tty /dev/pts/1"), |
| 2753 | set_inferior_tty_command, |
| 2754 | show_inferior_tty_command, |
| 2755 | &setlist, &showlist); |
| 2756 | add_com_alias ("tty", "set inferior-tty", class_alias, 0); |
| 2757 | |
| 2758 | add_setshow_optional_filename_cmd ("args", class_run, |
| 2759 | &inferior_args_scratch, _("\ |
| 2760 | Set argument list to give program being debugged when it is started."), _("\ |
| 2761 | Show argument list to give program being debugged when it is started."), _("\ |
| 2762 | Follow this command with any number of args, to be passed to the program."), |
| 2763 | set_args_command, |
| 2764 | show_args_command, |
| 2765 | &setlist, &showlist); |
| 2766 | |
| 2767 | c = add_cmd ("environment", no_class, environment_info, _("\ |
| 2768 | The environment to give the program, or one variable's value.\n\ |
| 2769 | With an argument VAR, prints the value of environment variable VAR to\n\ |
| 2770 | give the program being debugged. With no arguments, prints the entire\n\ |
| 2771 | environment to be given to the program."), &showlist); |
| 2772 | set_cmd_completer (c, noop_completer); |
| 2773 | |
| 2774 | add_prefix_cmd ("unset", no_class, unset_command, |
| 2775 | _("Complement to certain \"set\" commands."), |
| 2776 | &unsetlist, "unset ", 0, &cmdlist); |
| 2777 | |
| 2778 | c = add_cmd ("environment", class_run, unset_environment_command, _("\ |
| 2779 | Cancel environment variable VAR for the program.\n\ |
| 2780 | This does not affect the program until the next \"run\" command."), |
| 2781 | &unsetlist); |
| 2782 | set_cmd_completer (c, noop_completer); |
| 2783 | |
| 2784 | c = add_cmd ("environment", class_run, set_environment_command, _("\ |
| 2785 | Set environment variable value to give the program.\n\ |
| 2786 | Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\ |
| 2787 | VALUES of environment variables are uninterpreted strings.\n\ |
| 2788 | This does not affect the program until the next \"run\" command."), |
| 2789 | &setlist); |
| 2790 | set_cmd_completer (c, noop_completer); |
| 2791 | |
| 2792 | c = add_com ("path", class_files, path_command, _("\ |
| 2793 | Add directory DIR(s) to beginning of search path for object files.\n\ |
| 2794 | $cwd in the path means the current working directory.\n\ |
| 2795 | This path is equivalent to the $PATH shell variable. It is a list of\n\ |
| 2796 | directories, separated by colons. These directories are searched to find\n\ |
| 2797 | fully linked executable files and separately compiled object files as \ |
| 2798 | needed.")); |
| 2799 | set_cmd_completer (c, filename_completer); |
| 2800 | |
| 2801 | c = add_cmd ("paths", no_class, path_info, _("\ |
| 2802 | Current search path for finding object files.\n\ |
| 2803 | $cwd in the path means the current working directory.\n\ |
| 2804 | This path is equivalent to the $PATH shell variable. It is a list of\n\ |
| 2805 | directories, separated by colons. These directories are searched to find\n\ |
| 2806 | fully linked executable files and separately compiled object files as \ |
| 2807 | needed."), |
| 2808 | &showlist); |
| 2809 | set_cmd_completer (c, noop_completer); |
| 2810 | |
| 2811 | add_prefix_cmd ("kill", class_run, kill_command, |
| 2812 | _("Kill execution of program being debugged."), |
| 2813 | &killlist, "kill ", 0, &cmdlist); |
| 2814 | |
| 2815 | add_com ("attach", class_run, attach_command, _("\ |
| 2816 | Attach to a process or file outside of GDB.\n\ |
| 2817 | This command attaches to another target, of the same type as your last\n\ |
| 2818 | \"target\" command (\"info files\" will show your target stack).\n\ |
| 2819 | The command may take as argument a process id or a device file.\n\ |
| 2820 | For a process id, you must have permission to send the process a signal,\n\ |
| 2821 | and it must have the same effective uid as the debugger.\n\ |
| 2822 | When using \"attach\" with a process id, the debugger finds the\n\ |
| 2823 | program running in the process, looking first in the current working\n\ |
| 2824 | directory, or (if not found there) using the source file search path\n\ |
| 2825 | (see the \"directory\" command). You can also use the \"file\" command\n\ |
| 2826 | to specify the program, and to load its symbol table.")); |
| 2827 | |
| 2828 | add_prefix_cmd ("detach", class_run, detach_command, _("\ |
| 2829 | Detach a process or file previously attached.\n\ |
| 2830 | If a process, it is no longer traced, and it continues its execution. If\n\ |
| 2831 | you were debugging a file, the file is closed and gdb no longer accesses it."), |
| 2832 | &detachlist, "detach ", 0, &cmdlist); |
| 2833 | |
| 2834 | add_com ("disconnect", class_run, disconnect_command, _("\ |
| 2835 | Disconnect from a target.\n\ |
| 2836 | The target will wait for another debugger to connect. Not available for\n\ |
| 2837 | all targets.")); |
| 2838 | |
| 2839 | add_com ("signal", class_run, signal_command, _("\ |
| 2840 | Continue program giving it signal specified by the argument.\n\ |
| 2841 | An argument of \"0\" means continue program without giving it a signal.")); |
| 2842 | |
| 2843 | add_com ("stepi", class_run, stepi_command, _("\ |
| 2844 | Step one instruction exactly.\n\ |
| 2845 | Argument N means do this N times (or till program stops for another \ |
| 2846 | reason).")); |
| 2847 | add_com_alias ("si", "stepi", class_alias, 0); |
| 2848 | |
| 2849 | add_com ("nexti", class_run, nexti_command, _("\ |
| 2850 | Step one instruction, but proceed through subroutine calls.\n\ |
| 2851 | Argument N means do this N times (or till program stops for another \ |
| 2852 | reason).")); |
| 2853 | add_com_alias ("ni", "nexti", class_alias, 0); |
| 2854 | |
| 2855 | add_com ("finish", class_run, finish_command, _("\ |
| 2856 | Execute until selected stack frame returns.\n\ |
| 2857 | Upon return, the value returned is printed and put in the value history.")); |
| 2858 | add_com_alias ("fin", "finish", class_run, 1); |
| 2859 | |
| 2860 | add_com ("next", class_run, next_command, _("\ |
| 2861 | Step program, proceeding through subroutine calls.\n\ |
| 2862 | Like the \"step\" command as long as subroutine calls do not happen;\n\ |
| 2863 | when they do, the call is treated as one instruction.\n\ |
| 2864 | Argument N means do this N times (or till program stops for another \ |
| 2865 | reason).")); |
| 2866 | add_com_alias ("n", "next", class_run, 1); |
| 2867 | if (xdb_commands) |
| 2868 | add_com_alias ("S", "next", class_run, 1); |
| 2869 | |
| 2870 | add_com ("step", class_run, step_command, _("\ |
| 2871 | Step program until it reaches a different source line.\n\ |
| 2872 | Argument N means do this N times (or till program stops for another \ |
| 2873 | reason).")); |
| 2874 | add_com_alias ("s", "step", class_run, 1); |
| 2875 | |
| 2876 | c = add_com ("until", class_run, until_command, _("\ |
| 2877 | Execute until the program reaches a source line greater than the current\n\ |
| 2878 | or a specified location (same args as break command) within the current \ |
| 2879 | frame.")); |
| 2880 | set_cmd_completer (c, location_completer); |
| 2881 | add_com_alias ("u", "until", class_run, 1); |
| 2882 | |
| 2883 | c = add_com ("advance", class_run, advance_command, _("\ |
| 2884 | Continue the program up to the given location (same form as args for break \ |
| 2885 | command).\n\ |
| 2886 | Execution will also stop upon exit from the current stack frame.")); |
| 2887 | set_cmd_completer (c, location_completer); |
| 2888 | |
| 2889 | c = add_com ("jump", class_run, jump_command, _("\ |
| 2890 | Continue program being debugged at specified line or address.\n\ |
| 2891 | Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\ |
| 2892 | for an address to start at.")); |
| 2893 | set_cmd_completer (c, location_completer); |
| 2894 | |
| 2895 | if (xdb_commands) |
| 2896 | { |
| 2897 | c = add_com ("go", class_run, go_command, _("\ |
| 2898 | Usage: go <location>\n\ |
| 2899 | Continue program being debugged, stopping at specified line or \n\ |
| 2900 | address.\n\ |
| 2901 | Give as argument either LINENUM or *ADDR, where ADDR is an \n\ |
| 2902 | expression for an address to start at.\n\ |
| 2903 | This command is a combination of tbreak and jump.")); |
| 2904 | set_cmd_completer (c, location_completer); |
| 2905 | } |
| 2906 | |
| 2907 | if (xdb_commands) |
| 2908 | add_com_alias ("g", "go", class_run, 1); |
| 2909 | |
| 2910 | add_com ("continue", class_run, continue_command, _("\ |
| 2911 | Continue program being debugged, after signal or breakpoint.\n\ |
| 2912 | If proceeding from breakpoint, a number N may be used as an argument,\n\ |
| 2913 | which means to set the ignore count of that breakpoint to N - 1 (so that\n\ |
| 2914 | the breakpoint won't break until the Nth time it is reached).\n\ |
| 2915 | \n\ |
| 2916 | If non-stop mode is enabled, continue only the current thread,\n\ |
| 2917 | otherwise all the threads in the program are continued. To \n\ |
| 2918 | continue all stopped threads in non-stop mode, use the -a option.\n\ |
| 2919 | Specifying -a and an ignore count simultaneously is an error.")); |
| 2920 | add_com_alias ("c", "cont", class_run, 1); |
| 2921 | add_com_alias ("fg", "cont", class_run, 1); |
| 2922 | |
| 2923 | c = add_com ("run", class_run, run_command, _("\ |
| 2924 | Start debugged program. You may specify arguments to give it.\n\ |
| 2925 | Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\ |
| 2926 | Input and output redirection with \">\", \"<\", or \">>\" are also \ |
| 2927 | allowed.\n\n\ |
| 2928 | With no arguments, uses arguments last specified (with \"run\" \ |
| 2929 | or \"set args\").\n\ |
| 2930 | To cancel previous arguments and run with no arguments,\n\ |
| 2931 | use \"set args\" without arguments.")); |
| 2932 | set_cmd_completer (c, filename_completer); |
| 2933 | add_com_alias ("r", "run", class_run, 1); |
| 2934 | if (xdb_commands) |
| 2935 | add_com ("R", class_run, run_no_args_command, |
| 2936 | _("Start debugged program with no arguments.")); |
| 2937 | |
| 2938 | c = add_com ("start", class_run, start_command, _("\ |
| 2939 | Run the debugged program until the beginning of the main procedure.\n\ |
| 2940 | You may specify arguments to give to your program, just as with the\n\ |
| 2941 | \"run\" command.")); |
| 2942 | set_cmd_completer (c, filename_completer); |
| 2943 | |
| 2944 | add_com ("interrupt", class_run, interrupt_target_command, |
| 2945 | _("Interrupt the execution of the debugged program.\n\ |
| 2946 | If non-stop mode is enabled, interrupt only the current thread,\n\ |
| 2947 | otherwise all the threads in the program are stopped. To \n\ |
| 2948 | interrupt all running threads in non-stop mode, use the -a option.")); |
| 2949 | |
| 2950 | add_info ("registers", nofp_registers_info, _("\ |
| 2951 | List of integer registers and their contents, for selected stack frame.\n\ |
| 2952 | Register name as argument means describe only that register.")); |
| 2953 | add_info_alias ("r", "registers", 1); |
| 2954 | |
| 2955 | if (xdb_commands) |
| 2956 | add_com ("lr", class_info, nofp_registers_info, _("\ |
| 2957 | List of integer registers and their contents, for selected stack frame.\n\ |
| 2958 | Register name as argument means describe only that register.")); |
| 2959 | add_info ("all-registers", all_registers_info, _("\ |
| 2960 | List of all registers and their contents, for selected stack frame.\n\ |
| 2961 | Register name as argument means describe only that register.")); |
| 2962 | |
| 2963 | add_info ("program", program_info, |
| 2964 | _("Execution status of the program.")); |
| 2965 | |
| 2966 | add_info ("float", float_info, |
| 2967 | _("Print the status of the floating point unit\n")); |
| 2968 | |
| 2969 | add_info ("vector", vector_info, |
| 2970 | _("Print the status of the vector unit\n")); |
| 2971 | } |