| 1 | /* Memory-access and commands for "inferior" (child) process, for GDB. |
| 2 | Copyright 1986, 1987, 1988, 1989, 1991, 1992 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GDB. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 19 | |
| 20 | #include "defs.h" |
| 21 | #include <signal.h> |
| 22 | #include <sys/param.h> |
| 23 | #include <string.h> |
| 24 | #include "symtab.h" |
| 25 | #include "gdbtypes.h" |
| 26 | #include "frame.h" |
| 27 | #include "inferior.h" |
| 28 | #include "environ.h" |
| 29 | #include "value.h" |
| 30 | #include "gdbcmd.h" |
| 31 | #include "gdbcore.h" |
| 32 | #include "target.h" |
| 33 | |
| 34 | static void |
| 35 | continue_command PARAMS ((char *, int)); |
| 36 | |
| 37 | static void |
| 38 | until_next_command PARAMS ((int)); |
| 39 | |
| 40 | static void |
| 41 | until_command PARAMS ((char *, int)); |
| 42 | |
| 43 | static void |
| 44 | path_info PARAMS ((char *, int)); |
| 45 | |
| 46 | static void |
| 47 | path_command PARAMS ((char *, int)); |
| 48 | |
| 49 | static void |
| 50 | unset_command PARAMS ((char *, int)); |
| 51 | |
| 52 | static void |
| 53 | float_info PARAMS ((char *, int)); |
| 54 | |
| 55 | static void |
| 56 | detach_command PARAMS ((char *, int)); |
| 57 | |
| 58 | static void |
| 59 | nofp_registers_info PARAMS ((char *, int)); |
| 60 | |
| 61 | static void |
| 62 | all_registers_info PARAMS ((char *, int)); |
| 63 | |
| 64 | static void |
| 65 | registers_info PARAMS ((char *, int)); |
| 66 | |
| 67 | static void |
| 68 | do_registers_info PARAMS ((int, int)); |
| 69 | |
| 70 | static void |
| 71 | unset_environment_command PARAMS ((char *, int)); |
| 72 | |
| 73 | static void |
| 74 | set_environment_command PARAMS ((char *, int)); |
| 75 | |
| 76 | static void |
| 77 | environment_info PARAMS ((char *, int)); |
| 78 | |
| 79 | static void |
| 80 | program_info PARAMS ((char *, int)); |
| 81 | |
| 82 | static void |
| 83 | finish_command PARAMS ((char *, int)); |
| 84 | |
| 85 | static void |
| 86 | signal_command PARAMS ((char *, int)); |
| 87 | |
| 88 | static void |
| 89 | jump_command PARAMS ((char *, int)); |
| 90 | |
| 91 | static void |
| 92 | step_1 PARAMS ((int, int, char *)); |
| 93 | |
| 94 | static void |
| 95 | nexti_command PARAMS ((char *, int)); |
| 96 | |
| 97 | static void |
| 98 | stepi_command PARAMS ((char *, int)); |
| 99 | |
| 100 | static void |
| 101 | next_command PARAMS ((char *, int)); |
| 102 | |
| 103 | static void |
| 104 | step_command PARAMS ((char *, int)); |
| 105 | |
| 106 | static void |
| 107 | run_command PARAMS ((char *, int)); |
| 108 | |
| 109 | #define ERROR_NO_INFERIOR \ |
| 110 | if (!target_has_execution) error ("The program is not being run."); |
| 111 | |
| 112 | /* String containing arguments to give to the program, separated by spaces. |
| 113 | Empty string (pointer to '\0') means no args. */ |
| 114 | |
| 115 | static char *inferior_args; |
| 116 | |
| 117 | /* File name for default use for standard in/out in the inferior. */ |
| 118 | |
| 119 | char *inferior_io_terminal; |
| 120 | |
| 121 | /* Pid of our debugged inferior, or 0 if no inferior now. |
| 122 | Since various parts of infrun.c test this to see whether there is a program |
| 123 | being debugged it should be nonzero (currently 3 is used) for remote |
| 124 | debugging. */ |
| 125 | |
| 126 | int inferior_pid; |
| 127 | |
| 128 | /* Last signal that the inferior received (why it stopped). */ |
| 129 | |
| 130 | int stop_signal; |
| 131 | |
| 132 | /* Address at which inferior stopped. */ |
| 133 | |
| 134 | CORE_ADDR stop_pc; |
| 135 | |
| 136 | /* Stack frame when program stopped. */ |
| 137 | |
| 138 | FRAME_ADDR stop_frame_address; |
| 139 | |
| 140 | /* Chain containing status of breakpoint(s) that we have stopped at. */ |
| 141 | |
| 142 | bpstat stop_bpstat; |
| 143 | |
| 144 | /* Flag indicating that a command has proceeded the inferior past the |
| 145 | current breakpoint. */ |
| 146 | |
| 147 | int breakpoint_proceeded; |
| 148 | |
| 149 | /* Nonzero if stopped due to a step command. */ |
| 150 | |
| 151 | int stop_step; |
| 152 | |
| 153 | /* Nonzero if stopped due to completion of a stack dummy routine. */ |
| 154 | |
| 155 | int stop_stack_dummy; |
| 156 | |
| 157 | /* Nonzero if stopped due to a random (unexpected) signal in inferior |
| 158 | process. */ |
| 159 | |
| 160 | int stopped_by_random_signal; |
| 161 | |
| 162 | /* Range to single step within. |
| 163 | If this is nonzero, respond to a single-step signal |
| 164 | by continuing to step if the pc is in this range. */ |
| 165 | |
| 166 | CORE_ADDR step_range_start; /* Inclusive */ |
| 167 | CORE_ADDR step_range_end; /* Exclusive */ |
| 168 | |
| 169 | /* Stack frame address as of when stepping command was issued. |
| 170 | This is how we know when we step into a subroutine call, |
| 171 | and how to set the frame for the breakpoint used to step out. */ |
| 172 | |
| 173 | FRAME_ADDR step_frame_address; |
| 174 | |
| 175 | /* 1 means step over all subroutine calls. |
| 176 | 0 means don't step over calls (used by stepi). |
| 177 | -1 means step over calls to undebuggable functions. */ |
| 178 | |
| 179 | int step_over_calls; |
| 180 | |
| 181 | /* If stepping, nonzero means step count is > 1 |
| 182 | so don't print frame next time inferior stops |
| 183 | if it stops due to stepping. */ |
| 184 | |
| 185 | int step_multi; |
| 186 | |
| 187 | /* Environment to use for running inferior, |
| 188 | in format described in environ.h. */ |
| 189 | |
| 190 | struct environ *inferior_environ; |
| 191 | |
| 192 | \f |
| 193 | /* ARGSUSED */ |
| 194 | void |
| 195 | tty_command (file, from_tty) |
| 196 | char *file; |
| 197 | int from_tty; |
| 198 | { |
| 199 | if (file == 0) |
| 200 | error_no_arg ("terminal name for running target process"); |
| 201 | |
| 202 | inferior_io_terminal = savestring (file, strlen (file)); |
| 203 | } |
| 204 | |
| 205 | static void |
| 206 | run_command (args, from_tty) |
| 207 | char *args; |
| 208 | int from_tty; |
| 209 | { |
| 210 | char *exec_file; |
| 211 | |
| 212 | dont_repeat (); |
| 213 | |
| 214 | /* Shouldn't this be target_has_execution? FIXME. */ |
| 215 | if (inferior_pid) |
| 216 | { |
| 217 | if ( |
| 218 | !query ("The program being debugged has been started already.\n\ |
| 219 | Start it from the beginning? ")) |
| 220 | error ("Program not restarted."); |
| 221 | target_kill (); |
| 222 | } |
| 223 | |
| 224 | exec_file = (char *) get_exec_file (0); |
| 225 | |
| 226 | /* The exec file is re-read every time we do a generic_mourn_inferior, so |
| 227 | we just have to worry about the symbol file. */ |
| 228 | reread_symbols (); |
| 229 | |
| 230 | if (args) |
| 231 | { |
| 232 | char *cmd; |
| 233 | cmd = concat ("set args ", args, NULL); |
| 234 | make_cleanup (free, cmd); |
| 235 | execute_command (cmd, from_tty); |
| 236 | } |
| 237 | |
| 238 | if (from_tty) |
| 239 | { |
| 240 | puts_filtered("Starting program: "); |
| 241 | if (exec_file) |
| 242 | puts_filtered(exec_file); |
| 243 | puts_filtered(" "); |
| 244 | puts_filtered(inferior_args); |
| 245 | puts_filtered("\n"); |
| 246 | fflush (stdout); |
| 247 | } |
| 248 | |
| 249 | target_create_inferior (exec_file, inferior_args, |
| 250 | environ_vector (inferior_environ)); |
| 251 | } |
| 252 | \f |
| 253 | static void |
| 254 | continue_command (proc_count_exp, from_tty) |
| 255 | char *proc_count_exp; |
| 256 | int from_tty; |
| 257 | { |
| 258 | ERROR_NO_INFERIOR; |
| 259 | |
| 260 | /* If have argument, set proceed count of breakpoint we stopped at. */ |
| 261 | |
| 262 | if (proc_count_exp != NULL) |
| 263 | { |
| 264 | bpstat bs = stop_bpstat; |
| 265 | int num = bpstat_num (&bs); |
| 266 | if (num == 0 && from_tty) |
| 267 | { |
| 268 | printf_filtered |
| 269 | ("Not stopped at any breakpoint; argument ignored.\n"); |
| 270 | } |
| 271 | while (num != 0) |
| 272 | { |
| 273 | set_ignore_count (num, |
| 274 | parse_and_eval_address (proc_count_exp) - 1, |
| 275 | from_tty); |
| 276 | /* set_ignore_count prints a message ending with a period. |
| 277 | So print two spaces before "Continuing.". */ |
| 278 | if (from_tty) |
| 279 | printf_filtered (" "); |
| 280 | num = bpstat_num (&bs); |
| 281 | } |
| 282 | } |
| 283 | |
| 284 | if (from_tty) |
| 285 | printf_filtered ("Continuing.\n"); |
| 286 | |
| 287 | clear_proceed_status (); |
| 288 | |
| 289 | proceed ((CORE_ADDR) -1, -1, 0); |
| 290 | } |
| 291 | \f |
| 292 | /* Step until outside of current statement. */ |
| 293 | |
| 294 | /* ARGSUSED */ |
| 295 | static void |
| 296 | step_command (count_string, from_tty) |
| 297 | char *count_string; |
| 298 | int from_tty; |
| 299 | { |
| 300 | step_1 (0, 0, count_string); |
| 301 | } |
| 302 | |
| 303 | /* Likewise, but skip over subroutine calls as if single instructions. */ |
| 304 | |
| 305 | /* ARGSUSED */ |
| 306 | static void |
| 307 | next_command (count_string, from_tty) |
| 308 | char *count_string; |
| 309 | int from_tty; |
| 310 | { |
| 311 | step_1 (1, 0, count_string); |
| 312 | } |
| 313 | |
| 314 | /* Likewise, but step only one instruction. */ |
| 315 | |
| 316 | /* ARGSUSED */ |
| 317 | static void |
| 318 | stepi_command (count_string, from_tty) |
| 319 | char *count_string; |
| 320 | int from_tty; |
| 321 | { |
| 322 | step_1 (0, 1, count_string); |
| 323 | } |
| 324 | |
| 325 | /* ARGSUSED */ |
| 326 | static void |
| 327 | nexti_command (count_string, from_tty) |
| 328 | char *count_string; |
| 329 | int from_tty; |
| 330 | { |
| 331 | step_1 (1, 1, count_string); |
| 332 | } |
| 333 | |
| 334 | static void |
| 335 | step_1 (skip_subroutines, single_inst, count_string) |
| 336 | int skip_subroutines; |
| 337 | int single_inst; |
| 338 | char *count_string; |
| 339 | { |
| 340 | register int count = 1; |
| 341 | FRAME fr; |
| 342 | struct cleanup *cleanups = 0; |
| 343 | |
| 344 | ERROR_NO_INFERIOR; |
| 345 | count = count_string ? parse_and_eval_address (count_string) : 1; |
| 346 | |
| 347 | if (!single_inst || skip_subroutines) /* leave si command alone */ |
| 348 | { |
| 349 | enable_longjmp_breakpoint(); |
| 350 | cleanups = make_cleanup(disable_longjmp_breakpoint, 0); |
| 351 | } |
| 352 | |
| 353 | for (; count > 0; count--) |
| 354 | { |
| 355 | clear_proceed_status (); |
| 356 | |
| 357 | fr = get_current_frame (); |
| 358 | if (!fr) /* Avoid coredump here. Why tho? */ |
| 359 | error ("No current frame"); |
| 360 | step_frame_address = FRAME_FP (fr); |
| 361 | |
| 362 | if (! single_inst) |
| 363 | { |
| 364 | find_pc_line_pc_range (stop_pc, &step_range_start, &step_range_end); |
| 365 | if (step_range_end == 0) |
| 366 | { |
| 367 | char *name; |
| 368 | if (find_pc_partial_function (stop_pc, &name, &step_range_start, |
| 369 | &step_range_end) == 0) |
| 370 | error ("Cannot find bounds of current function"); |
| 371 | |
| 372 | target_terminal_ours (); |
| 373 | printf_filtered ("\ |
| 374 | Single stepping until exit from function %s, \n\ |
| 375 | which has no line number information.\n", name); |
| 376 | fflush (stdout); |
| 377 | } |
| 378 | } |
| 379 | else |
| 380 | { |
| 381 | /* Say we are stepping, but stop after one insn whatever it does. */ |
| 382 | step_range_start = step_range_end = 1; |
| 383 | if (!skip_subroutines) |
| 384 | /* It is stepi. |
| 385 | Don't step over function calls, not even to functions lacking |
| 386 | line numbers. */ |
| 387 | step_over_calls = 0; |
| 388 | } |
| 389 | |
| 390 | if (skip_subroutines) |
| 391 | step_over_calls = 1; |
| 392 | |
| 393 | step_multi = (count > 1); |
| 394 | proceed ((CORE_ADDR) -1, -1, 1); |
| 395 | if (! stop_step) |
| 396 | break; |
| 397 | |
| 398 | /* FIXME: On nexti, this may have already been done (when we hit the |
| 399 | step resume break, I think). Probably this should be moved to |
| 400 | wait_for_inferior (near the top). */ |
| 401 | #if defined (SHIFT_INST_REGS) |
| 402 | SHIFT_INST_REGS(); |
| 403 | #endif |
| 404 | } |
| 405 | |
| 406 | if (!single_inst || skip_subroutines) |
| 407 | do_cleanups(cleanups); |
| 408 | } |
| 409 | \f |
| 410 | /* Continue program at specified address. */ |
| 411 | |
| 412 | static void |
| 413 | jump_command (arg, from_tty) |
| 414 | char *arg; |
| 415 | int from_tty; |
| 416 | { |
| 417 | register CORE_ADDR addr; |
| 418 | struct symtabs_and_lines sals; |
| 419 | struct symtab_and_line sal; |
| 420 | struct symbol *fn; |
| 421 | struct symbol *sfn; |
| 422 | |
| 423 | ERROR_NO_INFERIOR; |
| 424 | |
| 425 | if (!arg) |
| 426 | error_no_arg ("starting address"); |
| 427 | |
| 428 | sals = decode_line_spec_1 (arg, 1); |
| 429 | if (sals.nelts != 1) |
| 430 | { |
| 431 | error ("Unreasonable jump request"); |
| 432 | } |
| 433 | |
| 434 | sal = sals.sals[0]; |
| 435 | free ((PTR)sals.sals); |
| 436 | |
| 437 | if (sal.symtab == 0 && sal.pc == 0) |
| 438 | error ("No source file has been specified."); |
| 439 | |
| 440 | resolve_sal_pc (&sal); /* May error out */ |
| 441 | |
| 442 | /* See if we are trying to jump to another function. */ |
| 443 | fn = get_frame_function (get_current_frame ()); |
| 444 | sfn = find_pc_function (sal.pc); |
| 445 | if (fn != NULL && sfn != fn) |
| 446 | { |
| 447 | if (!query ("Line %d is not in `%s'. Jump anyway? ", sal.line, |
| 448 | SYMBOL_SOURCE_NAME (fn))) |
| 449 | { |
| 450 | error ("Not confirmed."); |
| 451 | /* NOTREACHED */ |
| 452 | } |
| 453 | } |
| 454 | |
| 455 | addr = sal.pc; |
| 456 | |
| 457 | if (from_tty) |
| 458 | printf_filtered ("Continuing at %s.\n", |
| 459 | local_hex_string((unsigned long) addr)); |
| 460 | |
| 461 | clear_proceed_status (); |
| 462 | proceed (addr, 0, 0); |
| 463 | } |
| 464 | |
| 465 | /* Continue program giving it specified signal. */ |
| 466 | |
| 467 | static void |
| 468 | signal_command (signum_exp, from_tty) |
| 469 | char *signum_exp; |
| 470 | int from_tty; |
| 471 | { |
| 472 | register int signum; |
| 473 | |
| 474 | dont_repeat (); /* Too dangerous. */ |
| 475 | ERROR_NO_INFERIOR; |
| 476 | |
| 477 | if (!signum_exp) |
| 478 | error_no_arg ("signal number"); |
| 479 | |
| 480 | /* It would be even slicker to make signal names be valid expressions, |
| 481 | (the type could be "enum $signal" or some such), then the user could |
| 482 | assign them to convenience variables. */ |
| 483 | signum = strtosigno (signum_exp); |
| 484 | |
| 485 | if (signum == 0) |
| 486 | /* Not found as a name, try it as an expression. */ |
| 487 | signum = parse_and_eval_address (signum_exp); |
| 488 | |
| 489 | if (from_tty) |
| 490 | { |
| 491 | char *signame = strsigno (signum); |
| 492 | printf_filtered ("Continuing with signal "); |
| 493 | if (signame == NULL || signum == 0) |
| 494 | printf_filtered ("%d.\n", signum); |
| 495 | else |
| 496 | /* Do we need to print the number as well as the name? */ |
| 497 | printf_filtered ("%s (%d).\n", signame, signum); |
| 498 | } |
| 499 | |
| 500 | clear_proceed_status (); |
| 501 | proceed (stop_pc, signum, 0); |
| 502 | } |
| 503 | |
| 504 | /* Call breakpoint_auto_delete on the current contents of the bpstat |
| 505 | pointed to by arg (which is really a bpstat *). */ |
| 506 | void |
| 507 | breakpoint_auto_delete_contents (arg) |
| 508 | PTR arg; |
| 509 | { |
| 510 | breakpoint_auto_delete (*(bpstat *)arg); |
| 511 | } |
| 512 | |
| 513 | /* Execute a "stack dummy", a piece of code stored in the stack |
| 514 | by the debugger to be executed in the inferior. |
| 515 | |
| 516 | To call: first, do PUSH_DUMMY_FRAME. |
| 517 | Then push the contents of the dummy. It should end with a breakpoint insn. |
| 518 | Then call here, passing address at which to start the dummy. |
| 519 | |
| 520 | The contents of all registers are saved before the dummy frame is popped |
| 521 | and copied into the buffer BUFFER. |
| 522 | |
| 523 | The dummy's frame is automatically popped whenever that break is hit. |
| 524 | If that is the first time the program stops, run_stack_dummy |
| 525 | returns to its caller with that frame already gone and returns 0. |
| 526 | Otherwise, run_stack-dummy returns 1 (the frame will eventually be popped |
| 527 | when we do hit that breakpoint). */ |
| 528 | |
| 529 | /* DEBUG HOOK: 4 => return instead of letting the stack dummy run. */ |
| 530 | |
| 531 | static int stack_dummy_testing = 0; |
| 532 | |
| 533 | int |
| 534 | run_stack_dummy (addr, buffer) |
| 535 | CORE_ADDR addr; |
| 536 | char buffer[REGISTER_BYTES]; |
| 537 | { |
| 538 | struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); |
| 539 | |
| 540 | /* Now proceed, having reached the desired place. */ |
| 541 | clear_proceed_status (); |
| 542 | if (stack_dummy_testing & 4) |
| 543 | { |
| 544 | POP_FRAME; |
| 545 | return(0); |
| 546 | } |
| 547 | #ifdef CALL_DUMMY_BREAKPOINT_OFFSET |
| 548 | { |
| 549 | struct breakpoint *bpt; |
| 550 | struct symtab_and_line sal; |
| 551 | |
| 552 | sal.pc = addr - CALL_DUMMY_START_OFFSET + CALL_DUMMY_BREAKPOINT_OFFSET; |
| 553 | sal.symtab = NULL; |
| 554 | sal.line = 0; |
| 555 | |
| 556 | /* If defined, CALL_DUMMY_BREAKPOINT_OFFSET is where we need to put |
| 557 | a breakpoint instruction. If not, the call dummy already has the |
| 558 | breakpoint instruction in it. |
| 559 | |
| 560 | addr is the address of the call dummy plus the CALL_DUMMY_START_OFFSET, |
| 561 | so we need to subtract the CALL_DUMMY_START_OFFSET. */ |
| 562 | bpt = set_momentary_breakpoint (sal, |
| 563 | NULL, |
| 564 | bp_call_dummy); |
| 565 | bpt->disposition = delete; |
| 566 | |
| 567 | /* If all error()s out of proceed ended up calling normal_stop (and |
| 568 | perhaps they should; it already does in the special case of error |
| 569 | out of resume()), then we wouldn't need this. */ |
| 570 | make_cleanup (breakpoint_auto_delete_contents, &stop_bpstat); |
| 571 | } |
| 572 | #endif /* CALL_DUMMY_BREAKPOINT_OFFSET. */ |
| 573 | |
| 574 | proceed_to_finish = 1; /* We want stop_registers, please... */ |
| 575 | proceed (addr, 0, 0); |
| 576 | |
| 577 | discard_cleanups (old_cleanups); |
| 578 | |
| 579 | if (!stop_stack_dummy) |
| 580 | return 1; |
| 581 | |
| 582 | /* On return, the stack dummy has been popped already. */ |
| 583 | |
| 584 | memcpy (buffer, stop_registers, sizeof stop_registers); |
| 585 | return 0; |
| 586 | } |
| 587 | \f |
| 588 | /* Proceed until we reach a different source line with pc greater than |
| 589 | our current one or exit the function. We skip calls in both cases. |
| 590 | |
| 591 | Note that eventually this command should probably be changed so |
| 592 | that only source lines are printed out when we hit the breakpoint |
| 593 | we set. I'm going to postpone this until after a hopeful rewrite |
| 594 | of wait_for_inferior and the proceed status code. -- randy */ |
| 595 | |
| 596 | /* ARGSUSED */ |
| 597 | static void |
| 598 | until_next_command (from_tty) |
| 599 | int from_tty; |
| 600 | { |
| 601 | FRAME frame; |
| 602 | CORE_ADDR pc; |
| 603 | struct symbol *func; |
| 604 | struct symtab_and_line sal; |
| 605 | |
| 606 | clear_proceed_status (); |
| 607 | |
| 608 | frame = get_current_frame (); |
| 609 | |
| 610 | /* Step until either exited from this function or greater |
| 611 | than the current line (if in symbolic section) or pc (if |
| 612 | not). */ |
| 613 | |
| 614 | pc = read_pc (); |
| 615 | func = find_pc_function (pc); |
| 616 | |
| 617 | if (!func) |
| 618 | { |
| 619 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (pc); |
| 620 | |
| 621 | if (msymbol == NULL) |
| 622 | error ("Execution is not within a known function."); |
| 623 | |
| 624 | step_range_start = SYMBOL_VALUE_ADDRESS (msymbol); |
| 625 | step_range_end = pc; |
| 626 | } |
| 627 | else |
| 628 | { |
| 629 | sal = find_pc_line (pc, 0); |
| 630 | |
| 631 | step_range_start = BLOCK_START (SYMBOL_BLOCK_VALUE (func)); |
| 632 | step_range_end = sal.end; |
| 633 | } |
| 634 | |
| 635 | step_over_calls = 1; |
| 636 | step_frame_address = FRAME_FP (frame); |
| 637 | |
| 638 | step_multi = 0; /* Only one call to proceed */ |
| 639 | |
| 640 | proceed ((CORE_ADDR) -1, -1, 1); |
| 641 | } |
| 642 | |
| 643 | static void |
| 644 | until_command (arg, from_tty) |
| 645 | char *arg; |
| 646 | int from_tty; |
| 647 | { |
| 648 | if (!target_has_execution) |
| 649 | error ("The program is not running."); |
| 650 | if (arg) |
| 651 | until_break_command (arg, from_tty); |
| 652 | else |
| 653 | until_next_command (from_tty); |
| 654 | } |
| 655 | \f |
| 656 | /* "finish": Set a temporary breakpoint at the place |
| 657 | the selected frame will return to, then continue. */ |
| 658 | |
| 659 | static void |
| 660 | finish_command (arg, from_tty) |
| 661 | char *arg; |
| 662 | int from_tty; |
| 663 | { |
| 664 | struct symtab_and_line sal; |
| 665 | register FRAME frame; |
| 666 | struct frame_info *fi; |
| 667 | register struct symbol *function; |
| 668 | struct breakpoint *breakpoint; |
| 669 | struct cleanup *old_chain; |
| 670 | |
| 671 | if (arg) |
| 672 | error ("The \"finish\" command does not take any arguments."); |
| 673 | if (!target_has_execution) |
| 674 | error ("The program is not running."); |
| 675 | if (selected_frame == NULL) |
| 676 | error ("No selected frame."); |
| 677 | |
| 678 | frame = get_prev_frame (selected_frame); |
| 679 | if (frame == 0) |
| 680 | error ("\"finish\" not meaningful in the outermost frame."); |
| 681 | |
| 682 | clear_proceed_status (); |
| 683 | |
| 684 | fi = get_frame_info (frame); |
| 685 | sal = find_pc_line (fi->pc, 0); |
| 686 | sal.pc = fi->pc; |
| 687 | |
| 688 | breakpoint = set_momentary_breakpoint (sal, frame, bp_finish); |
| 689 | |
| 690 | old_chain = make_cleanup(delete_breakpoint, breakpoint); |
| 691 | |
| 692 | /* Find the function we will return from. */ |
| 693 | |
| 694 | fi = get_frame_info (selected_frame); |
| 695 | function = find_pc_function (fi->pc); |
| 696 | |
| 697 | /* Print info on the selected frame, including level number |
| 698 | but not source. */ |
| 699 | if (from_tty) |
| 700 | { |
| 701 | printf_filtered ("Run till exit from "); |
| 702 | print_stack_frame (selected_frame, selected_frame_level, 0); |
| 703 | } |
| 704 | |
| 705 | proceed_to_finish = 1; /* We want stop_registers, please... */ |
| 706 | proceed ((CORE_ADDR) -1, -1, 0); |
| 707 | |
| 708 | /* Did we stop at our breakpoint? */ |
| 709 | if (bpstat_find_breakpoint(stop_bpstat, breakpoint) != NULL |
| 710 | && function != 0) |
| 711 | { |
| 712 | struct type *value_type; |
| 713 | register value val; |
| 714 | CORE_ADDR funcaddr; |
| 715 | |
| 716 | value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (function)); |
| 717 | if (!value_type) |
| 718 | fatal ("internal: finish_command: function has no target type"); |
| 719 | |
| 720 | if (TYPE_CODE (value_type) == TYPE_CODE_VOID) |
| 721 | return; |
| 722 | |
| 723 | funcaddr = BLOCK_START (SYMBOL_BLOCK_VALUE (function)); |
| 724 | |
| 725 | val = value_being_returned (value_type, stop_registers, |
| 726 | using_struct_return (value_of_variable (function, NULL), |
| 727 | funcaddr, |
| 728 | value_type, |
| 729 | BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function)))); |
| 730 | |
| 731 | printf_filtered ("Value returned is $%d = ", record_latest_value (val)); |
| 732 | value_print (val, stdout, 0, Val_no_prettyprint); |
| 733 | printf_filtered ("\n"); |
| 734 | } |
| 735 | do_cleanups(old_chain); |
| 736 | } |
| 737 | \f |
| 738 | /* ARGSUSED */ |
| 739 | static void |
| 740 | program_info (args, from_tty) |
| 741 | char *args; |
| 742 | int from_tty; |
| 743 | { |
| 744 | bpstat bs = stop_bpstat; |
| 745 | int num = bpstat_num (&bs); |
| 746 | |
| 747 | if (!target_has_execution) |
| 748 | { |
| 749 | printf_filtered ("The program being debugged is not being run.\n"); |
| 750 | return; |
| 751 | } |
| 752 | |
| 753 | target_files_info (); |
| 754 | printf_filtered ("Program stopped at %s.\n", |
| 755 | local_hex_string((unsigned long) stop_pc)); |
| 756 | if (stop_step) |
| 757 | printf_filtered ("It stopped after being stepped.\n"); |
| 758 | else if (num != 0) |
| 759 | { |
| 760 | /* There may be several breakpoints in the same place, so this |
| 761 | isn't as strange as it seems. */ |
| 762 | while (num != 0) |
| 763 | { |
| 764 | if (num < 0) |
| 765 | printf_filtered ("It stopped at a breakpoint that has since been deleted.\n"); |
| 766 | else |
| 767 | printf_filtered ("It stopped at breakpoint %d.\n", num); |
| 768 | num = bpstat_num (&bs); |
| 769 | } |
| 770 | } |
| 771 | else if (stop_signal) |
| 772 | { |
| 773 | #ifdef PRINT_RANDOM_SIGNAL |
| 774 | PRINT_RANDOM_SIGNAL (stop_signal); |
| 775 | #else |
| 776 | char *signame = strsigno (stop_signal); |
| 777 | printf_filtered ("It stopped with signal "); |
| 778 | if (signame == NULL) |
| 779 | printf_filtered ("%d", stop_signal); |
| 780 | else |
| 781 | /* Do we need to print the number as well as the name? */ |
| 782 | printf_filtered ("%s (%d)", signame, stop_signal); |
| 783 | printf_filtered (", %s.\n", safe_strsignal (stop_signal)); |
| 784 | #endif |
| 785 | } |
| 786 | |
| 787 | if (!from_tty) |
| 788 | printf_filtered ("Type \"info stack\" or \"info registers\" for more information.\n"); |
| 789 | } |
| 790 | \f |
| 791 | static void |
| 792 | environment_info (var, from_tty) |
| 793 | char *var; |
| 794 | int from_tty; |
| 795 | { |
| 796 | if (var) |
| 797 | { |
| 798 | register char *val = get_in_environ (inferior_environ, var); |
| 799 | if (val) |
| 800 | { |
| 801 | puts_filtered (var); |
| 802 | puts_filtered (" = "); |
| 803 | puts_filtered (val); |
| 804 | puts_filtered ("\n"); |
| 805 | } |
| 806 | else |
| 807 | { |
| 808 | puts_filtered ("Environment variable \""); |
| 809 | puts_filtered (var); |
| 810 | puts_filtered ("\" not defined.\n"); |
| 811 | } |
| 812 | } |
| 813 | else |
| 814 | { |
| 815 | register char **vector = environ_vector (inferior_environ); |
| 816 | while (*vector) |
| 817 | { |
| 818 | puts_filtered (*vector++); |
| 819 | puts_filtered ("\n"); |
| 820 | } |
| 821 | } |
| 822 | } |
| 823 | |
| 824 | static void |
| 825 | set_environment_command (arg, from_tty) |
| 826 | char *arg; |
| 827 | int from_tty; |
| 828 | { |
| 829 | register char *p, *val, *var; |
| 830 | int nullset = 0; |
| 831 | |
| 832 | if (arg == 0) |
| 833 | error_no_arg ("environment variable and value"); |
| 834 | |
| 835 | /* Find seperation between variable name and value */ |
| 836 | p = (char *) strchr (arg, '='); |
| 837 | val = (char *) strchr (arg, ' '); |
| 838 | |
| 839 | if (p != 0 && val != 0) |
| 840 | { |
| 841 | /* We have both a space and an equals. If the space is before the |
| 842 | equals, walk forward over the spaces til we see a nonspace |
| 843 | (possibly the equals). */ |
| 844 | if (p > val) |
| 845 | while (*val == ' ') |
| 846 | val++; |
| 847 | |
| 848 | /* Now if the = is after the char following the spaces, |
| 849 | take the char following the spaces. */ |
| 850 | if (p > val) |
| 851 | p = val - 1; |
| 852 | } |
| 853 | else if (val != 0 && p == 0) |
| 854 | p = val; |
| 855 | |
| 856 | if (p == arg) |
| 857 | error_no_arg ("environment variable to set"); |
| 858 | |
| 859 | if (p == 0 || p[1] == 0) |
| 860 | { |
| 861 | nullset = 1; |
| 862 | if (p == 0) |
| 863 | p = arg + strlen (arg); /* So that savestring below will work */ |
| 864 | } |
| 865 | else |
| 866 | { |
| 867 | /* Not setting variable value to null */ |
| 868 | val = p + 1; |
| 869 | while (*val == ' ' || *val == '\t') |
| 870 | val++; |
| 871 | } |
| 872 | |
| 873 | while (p != arg && (p[-1] == ' ' || p[-1] == '\t')) p--; |
| 874 | |
| 875 | var = savestring (arg, p - arg); |
| 876 | if (nullset) |
| 877 | { |
| 878 | printf_filtered ("Setting environment variable \"%s\" to null value.\n", var); |
| 879 | set_in_environ (inferior_environ, var, ""); |
| 880 | } |
| 881 | else |
| 882 | set_in_environ (inferior_environ, var, val); |
| 883 | free (var); |
| 884 | } |
| 885 | |
| 886 | static void |
| 887 | unset_environment_command (var, from_tty) |
| 888 | char *var; |
| 889 | int from_tty; |
| 890 | { |
| 891 | if (var == 0) |
| 892 | { |
| 893 | /* If there is no argument, delete all environment variables. |
| 894 | Ask for confirmation if reading from the terminal. */ |
| 895 | if (!from_tty || query ("Delete all environment variables? ")) |
| 896 | { |
| 897 | free_environ (inferior_environ); |
| 898 | inferior_environ = make_environ (); |
| 899 | } |
| 900 | } |
| 901 | else |
| 902 | unset_in_environ (inferior_environ, var); |
| 903 | } |
| 904 | |
| 905 | /* Handle the execution path (PATH variable) */ |
| 906 | |
| 907 | static const char path_var_name[] = "PATH"; |
| 908 | |
| 909 | /* ARGSUSED */ |
| 910 | static void |
| 911 | path_info (args, from_tty) |
| 912 | char *args; |
| 913 | int from_tty; |
| 914 | { |
| 915 | puts_filtered ("Executable and object file path: "); |
| 916 | puts_filtered (get_in_environ (inferior_environ, path_var_name)); |
| 917 | puts_filtered ("\n"); |
| 918 | } |
| 919 | |
| 920 | /* Add zero or more directories to the front of the execution path. */ |
| 921 | |
| 922 | static void |
| 923 | path_command (dirname, from_tty) |
| 924 | char *dirname; |
| 925 | int from_tty; |
| 926 | { |
| 927 | char *exec_path; |
| 928 | |
| 929 | dont_repeat (); |
| 930 | exec_path = strsave (get_in_environ (inferior_environ, path_var_name)); |
| 931 | mod_path (dirname, &exec_path); |
| 932 | set_in_environ (inferior_environ, path_var_name, exec_path); |
| 933 | free (exec_path); |
| 934 | if (from_tty) |
| 935 | path_info ((char *)NULL, from_tty); |
| 936 | } |
| 937 | \f |
| 938 | /* This routine is getting awfully cluttered with #if's. It's probably |
| 939 | time to turn this into READ_PC and define it in the tm.h file. |
| 940 | Ditto for write_pc. */ |
| 941 | |
| 942 | CORE_ADDR |
| 943 | read_pc () |
| 944 | { |
| 945 | #ifdef TARGET_READ_PC |
| 946 | return TARGET_READ_PC (); |
| 947 | #else |
| 948 | return ADDR_BITS_REMOVE ((CORE_ADDR) read_register (PC_REGNUM)); |
| 949 | #endif |
| 950 | } |
| 951 | |
| 952 | void |
| 953 | write_pc (val) |
| 954 | CORE_ADDR val; |
| 955 | { |
| 956 | #ifdef TARGET_WRITE_PC |
| 957 | TARGET_WRITE_PC (val); |
| 958 | #else |
| 959 | write_register (PC_REGNUM, (long) val); |
| 960 | #ifdef NPC_REGNUM |
| 961 | write_register (NPC_REGNUM, (long) val + 4); |
| 962 | #ifdef NNPC_REGNUM |
| 963 | write_register (NNPC_REGNUM, (long) val + 8); |
| 964 | #endif |
| 965 | #endif |
| 966 | #endif |
| 967 | } |
| 968 | |
| 969 | /* Cope with strage ways of getting to the stack and frame pointers */ |
| 970 | |
| 971 | CORE_ADDR |
| 972 | read_sp () |
| 973 | { |
| 974 | #ifdef TARGET_READ_SP |
| 975 | return TARGET_READ_SP (); |
| 976 | #else |
| 977 | return read_register (SP_REGNUM); |
| 978 | #endif |
| 979 | } |
| 980 | |
| 981 | void |
| 982 | write_sp (val) |
| 983 | CORE_ADDR val; |
| 984 | { |
| 985 | #ifdef TARGET_WRITE_SP |
| 986 | TARGET_WRITE_SP (val); |
| 987 | #else |
| 988 | write_register (SP_REGNUM, val); |
| 989 | #endif |
| 990 | } |
| 991 | |
| 992 | |
| 993 | CORE_ADDR |
| 994 | read_fp () |
| 995 | { |
| 996 | #ifdef TARGET_READ_FP |
| 997 | return TARGET_READ_FP (); |
| 998 | #else |
| 999 | return read_register (FP_REGNUM); |
| 1000 | #endif |
| 1001 | } |
| 1002 | |
| 1003 | void |
| 1004 | write_fp (val) |
| 1005 | CORE_ADDR val; |
| 1006 | { |
| 1007 | #ifdef TARGET_WRITE_FP |
| 1008 | TARGET_WRITE_FP (val); |
| 1009 | #else |
| 1010 | write_register (FP_REGNUM, val); |
| 1011 | #endif |
| 1012 | } |
| 1013 | |
| 1014 | const char * const reg_names[] = REGISTER_NAMES; |
| 1015 | |
| 1016 | /* Print out the machine register regnum. If regnum is -1, |
| 1017 | print all registers (fpregs == 1) or all non-float registers |
| 1018 | (fpregs == 0). |
| 1019 | |
| 1020 | For most machines, having all_registers_info() print the |
| 1021 | register(s) one per line is good enough. If a different format |
| 1022 | is required, (eg, for MIPS or Pyramid 90x, which both have |
| 1023 | lots of regs), or there is an existing convention for showing |
| 1024 | all the registers, define the macro DO_REGISTERS_INFO(regnum, fp) |
| 1025 | to provide that format. */ |
| 1026 | |
| 1027 | #if !defined (DO_REGISTERS_INFO) |
| 1028 | #define DO_REGISTERS_INFO(regnum, fp) do_registers_info(regnum, fp) |
| 1029 | static void |
| 1030 | do_registers_info (regnum, fpregs) |
| 1031 | int regnum; |
| 1032 | int fpregs; |
| 1033 | { |
| 1034 | register int i; |
| 1035 | |
| 1036 | for (i = 0; i < NUM_REGS; i++) |
| 1037 | { |
| 1038 | char raw_buffer[MAX_REGISTER_RAW_SIZE]; |
| 1039 | char virtual_buffer[MAX_REGISTER_VIRTUAL_SIZE]; |
| 1040 | |
| 1041 | /* Decide between printing all regs, nonfloat regs, or specific reg. */ |
| 1042 | if (regnum == -1) { |
| 1043 | if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT && !fpregs) |
| 1044 | continue; |
| 1045 | } else { |
| 1046 | if (i != regnum) |
| 1047 | continue; |
| 1048 | } |
| 1049 | |
| 1050 | fputs_filtered (reg_names[i], stdout); |
| 1051 | print_spaces_filtered (15 - strlen (reg_names[i]), stdout); |
| 1052 | |
| 1053 | /* Get the data in raw format, then convert also to virtual format. */ |
| 1054 | if (read_relative_register_raw_bytes (i, raw_buffer)) |
| 1055 | { |
| 1056 | printf_filtered ("Invalid register contents\n"); |
| 1057 | continue; |
| 1058 | } |
| 1059 | |
| 1060 | REGISTER_CONVERT_TO_VIRTUAL (i, raw_buffer, virtual_buffer); |
| 1061 | |
| 1062 | /* If virtual format is floating, print it that way, and in raw hex. */ |
| 1063 | if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT |
| 1064 | && ! INVALID_FLOAT (virtual_buffer, REGISTER_VIRTUAL_SIZE (i))) |
| 1065 | { |
| 1066 | register int j; |
| 1067 | |
| 1068 | val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, |
| 1069 | stdout, 0, 1, 0, Val_pretty_default); |
| 1070 | |
| 1071 | printf_filtered ("\t(raw 0x"); |
| 1072 | for (j = 0; j < REGISTER_RAW_SIZE (i); j++) |
| 1073 | printf_filtered ("%02x", (unsigned char)raw_buffer[j]); |
| 1074 | printf_filtered (")"); |
| 1075 | } |
| 1076 | |
| 1077 | /* FIXME! val_print probably can handle all of these cases now... */ |
| 1078 | |
| 1079 | /* Else if virtual format is too long for printf, |
| 1080 | print in hex a byte at a time. */ |
| 1081 | else if (REGISTER_VIRTUAL_SIZE (i) > sizeof (long)) |
| 1082 | { |
| 1083 | register int j; |
| 1084 | printf_filtered ("0x"); |
| 1085 | for (j = 0; j < REGISTER_VIRTUAL_SIZE (i); j++) |
| 1086 | printf_filtered ("%02x", (unsigned char)virtual_buffer[j]); |
| 1087 | } |
| 1088 | /* Else print as integer in hex and in decimal. */ |
| 1089 | else |
| 1090 | { |
| 1091 | val_print (REGISTER_VIRTUAL_TYPE (i), raw_buffer, 0, |
| 1092 | stdout, 'x', 1, 0, Val_pretty_default); |
| 1093 | printf_filtered ("\t"); |
| 1094 | val_print (REGISTER_VIRTUAL_TYPE (i), raw_buffer, 0, |
| 1095 | stdout, 0, 1, 0, Val_pretty_default); |
| 1096 | } |
| 1097 | |
| 1098 | /* The SPARC wants to print even-numbered float regs as doubles |
| 1099 | in addition to printing them as floats. */ |
| 1100 | #ifdef PRINT_REGISTER_HOOK |
| 1101 | PRINT_REGISTER_HOOK (i); |
| 1102 | #endif |
| 1103 | |
| 1104 | printf_filtered ("\n"); |
| 1105 | } |
| 1106 | } |
| 1107 | #endif /* no DO_REGISTERS_INFO. */ |
| 1108 | |
| 1109 | static void |
| 1110 | registers_info (addr_exp, fpregs) |
| 1111 | char *addr_exp; |
| 1112 | int fpregs; |
| 1113 | { |
| 1114 | int regnum; |
| 1115 | register char *end; |
| 1116 | |
| 1117 | if (!target_has_registers) |
| 1118 | error ("The program has no registers now."); |
| 1119 | |
| 1120 | if (!addr_exp) |
| 1121 | { |
| 1122 | DO_REGISTERS_INFO(-1, fpregs); |
| 1123 | return; |
| 1124 | } |
| 1125 | |
| 1126 | do |
| 1127 | { |
| 1128 | if (addr_exp[0] == '$') |
| 1129 | addr_exp++; |
| 1130 | end = addr_exp; |
| 1131 | while (*end != '\0' && *end != ' ' && *end != '\t') |
| 1132 | ++end; |
| 1133 | for (regnum = 0; regnum < NUM_REGS; regnum++) |
| 1134 | if (!strncmp (addr_exp, reg_names[regnum], end - addr_exp) |
| 1135 | && strlen (reg_names[regnum]) == end - addr_exp) |
| 1136 | goto found; |
| 1137 | if (*addr_exp >= '0' && *addr_exp <= '9') |
| 1138 | regnum = atoi (addr_exp); /* Take a number */ |
| 1139 | if (regnum >= NUM_REGS) /* Bad name, or bad number */ |
| 1140 | error ("%.*s: invalid register", end - addr_exp, addr_exp); |
| 1141 | |
| 1142 | found: |
| 1143 | DO_REGISTERS_INFO(regnum, fpregs); |
| 1144 | |
| 1145 | addr_exp = end; |
| 1146 | while (*addr_exp == ' ' || *addr_exp == '\t') |
| 1147 | ++addr_exp; |
| 1148 | } while (*addr_exp != '\0'); |
| 1149 | } |
| 1150 | |
| 1151 | static void |
| 1152 | all_registers_info (addr_exp, from_tty) |
| 1153 | char *addr_exp; |
| 1154 | int from_tty; |
| 1155 | { |
| 1156 | registers_info (addr_exp, 1); |
| 1157 | } |
| 1158 | |
| 1159 | static void |
| 1160 | nofp_registers_info (addr_exp, from_tty) |
| 1161 | char *addr_exp; |
| 1162 | int from_tty; |
| 1163 | { |
| 1164 | registers_info (addr_exp, 0); |
| 1165 | } |
| 1166 | \f |
| 1167 | /* |
| 1168 | * TODO: |
| 1169 | * Should save/restore the tty state since it might be that the |
| 1170 | * program to be debugged was started on this tty and it wants |
| 1171 | * the tty in some state other than what we want. If it's running |
| 1172 | * on another terminal or without a terminal, then saving and |
| 1173 | * restoring the tty state is a harmless no-op. |
| 1174 | * This only needs to be done if we are attaching to a process. |
| 1175 | */ |
| 1176 | |
| 1177 | /* |
| 1178 | attach_command -- |
| 1179 | takes a program started up outside of gdb and ``attaches'' to it. |
| 1180 | This stops it cold in its tracks and allows us to start debugging it. |
| 1181 | and wait for the trace-trap that results from attaching. */ |
| 1182 | |
| 1183 | void |
| 1184 | attach_command (args, from_tty) |
| 1185 | char *args; |
| 1186 | int from_tty; |
| 1187 | { |
| 1188 | dont_repeat (); /* Not for the faint of heart */ |
| 1189 | |
| 1190 | if (target_has_execution) |
| 1191 | { |
| 1192 | if (query ("A program is being debugged already. Kill it? ")) |
| 1193 | target_kill (); |
| 1194 | else |
| 1195 | error ("Not killed."); |
| 1196 | } |
| 1197 | |
| 1198 | target_attach (args, from_tty); |
| 1199 | |
| 1200 | /* Set up the "saved terminal modes" of the inferior |
| 1201 | based on what modes we are starting it with. */ |
| 1202 | target_terminal_init (); |
| 1203 | |
| 1204 | /* Install inferior's terminal modes. */ |
| 1205 | target_terminal_inferior (); |
| 1206 | |
| 1207 | /* Set up execution context to know that we should return from |
| 1208 | wait_for_inferior as soon as the target reports a stop. */ |
| 1209 | init_wait_for_inferior (); |
| 1210 | clear_proceed_status (); |
| 1211 | stop_soon_quietly = 1; |
| 1212 | |
| 1213 | wait_for_inferior (); |
| 1214 | |
| 1215 | #ifdef SOLIB_ADD |
| 1216 | /* Add shared library symbols from the newly attached process, if any. */ |
| 1217 | SOLIB_ADD ((char *)0, from_tty, (struct target_ops *)0); |
| 1218 | #endif |
| 1219 | |
| 1220 | normal_stop (); |
| 1221 | } |
| 1222 | |
| 1223 | /* |
| 1224 | * detach_command -- |
| 1225 | * takes a program previously attached to and detaches it. |
| 1226 | * The program resumes execution and will no longer stop |
| 1227 | * on signals, etc. We better not have left any breakpoints |
| 1228 | * in the program or it'll die when it hits one. For this |
| 1229 | * to work, it may be necessary for the process to have been |
| 1230 | * previously attached. It *might* work if the program was |
| 1231 | * started via the normal ptrace (PTRACE_TRACEME). |
| 1232 | */ |
| 1233 | |
| 1234 | static void |
| 1235 | detach_command (args, from_tty) |
| 1236 | char *args; |
| 1237 | int from_tty; |
| 1238 | { |
| 1239 | dont_repeat (); /* Not for the faint of heart */ |
| 1240 | target_detach (args, from_tty); |
| 1241 | } |
| 1242 | |
| 1243 | /* ARGSUSED */ |
| 1244 | static void |
| 1245 | float_info (addr_exp, from_tty) |
| 1246 | char *addr_exp; |
| 1247 | int from_tty; |
| 1248 | { |
| 1249 | #ifdef FLOAT_INFO |
| 1250 | FLOAT_INFO; |
| 1251 | #else |
| 1252 | printf_filtered ("No floating point info available for this processor.\n"); |
| 1253 | #endif |
| 1254 | } |
| 1255 | \f |
| 1256 | /* ARGSUSED */ |
| 1257 | static void |
| 1258 | unset_command (args, from_tty) |
| 1259 | char *args; |
| 1260 | int from_tty; |
| 1261 | { |
| 1262 | printf_filtered ("\"unset\" must be followed by the name of an unset subcommand.\n"); |
| 1263 | help_list (unsetlist, "unset ", -1, stdout); |
| 1264 | } |
| 1265 | |
| 1266 | void |
| 1267 | _initialize_infcmd () |
| 1268 | { |
| 1269 | struct cmd_list_element *c; |
| 1270 | |
| 1271 | add_com ("tty", class_run, tty_command, |
| 1272 | "Set terminal for future runs of program being debugged."); |
| 1273 | |
| 1274 | add_show_from_set |
| 1275 | (add_set_cmd ("args", class_run, var_string_noescape, (char *)&inferior_args, |
| 1276 | |
| 1277 | "Set arguments to give program being debugged when it is started.\n\ |
| 1278 | Follow this command with any number of args, to be passed to the program.", |
| 1279 | &setlist), |
| 1280 | &showlist); |
| 1281 | |
| 1282 | c = add_cmd |
| 1283 | ("environment", no_class, environment_info, |
| 1284 | "The environment to give the program, or one variable's value.\n\ |
| 1285 | With an argument VAR, prints the value of environment variable VAR to\n\ |
| 1286 | give the program being debugged. With no arguments, prints the entire\n\ |
| 1287 | environment to be given to the program.", &showlist); |
| 1288 | c->completer = noop_completer; |
| 1289 | |
| 1290 | add_prefix_cmd ("unset", no_class, unset_command, |
| 1291 | "Complement to certain \"set\" commands", |
| 1292 | &unsetlist, "unset ", 0, &cmdlist); |
| 1293 | |
| 1294 | c = add_cmd ("environment", class_run, unset_environment_command, |
| 1295 | "Cancel environment variable VAR for the program.\n\ |
| 1296 | This does not affect the program until the next \"run\" command.", |
| 1297 | &unsetlist); |
| 1298 | c->completer = noop_completer; |
| 1299 | |
| 1300 | c = add_cmd ("environment", class_run, set_environment_command, |
| 1301 | "Set environment variable value to give the program.\n\ |
| 1302 | Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\ |
| 1303 | VALUES of environment variables are uninterpreted strings.\n\ |
| 1304 | This does not affect the program until the next \"run\" command.", |
| 1305 | &setlist); |
| 1306 | c->completer = noop_completer; |
| 1307 | |
| 1308 | add_com ("path", class_files, path_command, |
| 1309 | "Add directory DIR(s) to beginning of search path for object files.\n\ |
| 1310 | $cwd in the path means the current working directory.\n\ |
| 1311 | This path is equivalent to the $PATH shell variable. It is a list of\n\ |
| 1312 | directories, separated by colons. These directories are searched to find\n\ |
| 1313 | fully linked executable files and separately compiled object files as needed."); |
| 1314 | |
| 1315 | c = add_cmd ("paths", no_class, path_info, |
| 1316 | "Current search path for finding object files.\n\ |
| 1317 | $cwd in the path means the current working directory.\n\ |
| 1318 | This path is equivalent to the $PATH shell variable. It is a list of\n\ |
| 1319 | directories, separated by colons. These directories are searched to find\n\ |
| 1320 | fully linked executable files and separately compiled object files as needed.", &showlist); |
| 1321 | c->completer = noop_completer; |
| 1322 | |
| 1323 | add_com ("attach", class_run, attach_command, |
| 1324 | "Attach to a process or file outside of GDB.\n\ |
| 1325 | This command attaches to another target, of the same type as your last\n\ |
| 1326 | `target' command (`info files' will show your target stack).\n\ |
| 1327 | The command may take as argument a process id or a device file.\n\ |
| 1328 | For a process id, you must have permission to send the process a signal,\n\ |
| 1329 | and it must have the same effective uid as the debugger.\n\ |
| 1330 | When using \"attach\", you should use the \"file\" command to specify\n\ |
| 1331 | the program running in the process, and to load its symbol table."); |
| 1332 | |
| 1333 | add_com ("detach", class_run, detach_command, |
| 1334 | "Detach a process or file previously attached.\n\ |
| 1335 | If a process, it is no longer traced, and it continues its execution. If you\n\ |
| 1336 | were debugging a file, the file is closed and gdb no longer accesses it."); |
| 1337 | |
| 1338 | add_com ("signal", class_run, signal_command, |
| 1339 | "Continue program giving it signal number SIGNUMBER."); |
| 1340 | |
| 1341 | add_com ("stepi", class_run, stepi_command, |
| 1342 | "Step one instruction exactly.\n\ |
| 1343 | Argument N means do this N times (or till program stops for another reason)."); |
| 1344 | add_com_alias ("si", "stepi", class_alias, 0); |
| 1345 | |
| 1346 | add_com ("nexti", class_run, nexti_command, |
| 1347 | "Step one instruction, but proceed through subroutine calls.\n\ |
| 1348 | Argument N means do this N times (or till program stops for another reason)."); |
| 1349 | add_com_alias ("ni", "nexti", class_alias, 0); |
| 1350 | |
| 1351 | add_com ("finish", class_run, finish_command, |
| 1352 | "Execute until selected stack frame returns.\n\ |
| 1353 | Upon return, the value returned is printed and put in the value history."); |
| 1354 | |
| 1355 | add_com ("next", class_run, next_command, |
| 1356 | "Step program, proceeding through subroutine calls.\n\ |
| 1357 | Like the \"step\" command as long as subroutine calls do not happen;\n\ |
| 1358 | when they do, the call is treated as one instruction.\n\ |
| 1359 | Argument N means do this N times (or till program stops for another reason)."); |
| 1360 | add_com_alias ("n", "next", class_run, 1); |
| 1361 | |
| 1362 | add_com ("step", class_run, step_command, |
| 1363 | "Step program until it reaches a different source line.\n\ |
| 1364 | Argument N means do this N times (or till program stops for another reason)."); |
| 1365 | add_com_alias ("s", "step", class_run, 1); |
| 1366 | |
| 1367 | add_com ("until", class_run, until_command, |
| 1368 | "Execute until the program reaches a source line greater than the current\n\ |
| 1369 | or a specified line or address or function (same args as break command).\n\ |
| 1370 | Execution will also stop upon exit from the current stack frame."); |
| 1371 | add_com_alias ("u", "until", class_run, 1); |
| 1372 | |
| 1373 | add_com ("jump", class_run, jump_command, |
| 1374 | "Continue program being debugged at specified line or address.\n\ |
| 1375 | Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\ |
| 1376 | for an address to start at."); |
| 1377 | |
| 1378 | add_com ("continue", class_run, continue_command, |
| 1379 | "Continue program being debugged, after signal or breakpoint.\n\ |
| 1380 | If proceeding from breakpoint, a number N may be used as an argument,\n\ |
| 1381 | which means to set the ignore count of that breakpoint to N - 1 (so that\n\ |
| 1382 | the breakpoint won't break until the Nth time it is reached)."); |
| 1383 | add_com_alias ("c", "cont", class_run, 1); |
| 1384 | add_com_alias ("fg", "cont", class_run, 1); |
| 1385 | |
| 1386 | add_com ("run", class_run, run_command, |
| 1387 | "Start debugged program. You may specify arguments to give it.\n\ |
| 1388 | Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\ |
| 1389 | Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\ |
| 1390 | With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\ |
| 1391 | To cancel previous arguments and run with no arguments,\n\ |
| 1392 | use \"set args\" without arguments."); |
| 1393 | add_com_alias ("r", "run", class_run, 1); |
| 1394 | |
| 1395 | add_info ("registers", nofp_registers_info, |
| 1396 | "List of integer registers and their contents, for selected stack frame.\n\ |
| 1397 | Register name as argument means describe only that register."); |
| 1398 | |
| 1399 | add_info ("all-registers", all_registers_info, |
| 1400 | "List of all registers and their contents, for selected stack frame.\n\ |
| 1401 | Register name as argument means describe only that register."); |
| 1402 | |
| 1403 | add_info ("program", program_info, |
| 1404 | "Execution status of the program."); |
| 1405 | |
| 1406 | add_info ("float", float_info, |
| 1407 | "Print the status of the floating point unit\n"); |
| 1408 | |
| 1409 | inferior_args = savestring ("", 1); /* Initially no args */ |
| 1410 | inferior_environ = make_environ (); |
| 1411 | init_environ (inferior_environ); |
| 1412 | } |