Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Memory-access and commands for "inferior" process, for GDB. |
96baa820 | 2 | Copyright 1986, 87, 88, 89, 91, 92, 95, 96, 1998, 1999 |
c906108c SS |
3 | Free Software Foundation, Inc. |
4 | ||
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b JM |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include <signal.h> | |
24 | #include "gdb_string.h" | |
25 | #include "symtab.h" | |
26 | #include "gdbtypes.h" | |
27 | #include "frame.h" | |
28 | #include "inferior.h" | |
29 | #include "environ.h" | |
30 | #include "value.h" | |
31 | #include "gdbcmd.h" | |
32 | #include "gdbcore.h" | |
33 | #include "target.h" | |
34 | #include "language.h" | |
35 | #include "symfile.h" | |
36 | #include "objfiles.h" | |
43ff13b4 | 37 | #include "event-loop.h" |
96baa820 | 38 | #include "parser-defs.h" |
c906108c SS |
39 | |
40 | /* Functions exported for general use: */ | |
41 | ||
42 | void nofp_registers_info PARAMS ((char *, int)); | |
43 | ||
44 | void all_registers_info PARAMS ((char *, int)); | |
45 | ||
46 | void registers_info PARAMS ((char *, int)); | |
47 | ||
48 | /* Local functions: */ | |
49 | ||
50 | void continue_command PARAMS ((char *, int)); | |
51 | ||
43ff13b4 JM |
52 | static void finish_command_continuation PARAMS ((struct continuation_arg *)); |
53 | ||
c906108c SS |
54 | static void until_next_command PARAMS ((int)); |
55 | ||
56 | static void until_command PARAMS ((char *, int)); | |
57 | ||
58 | static void path_info PARAMS ((char *, int)); | |
59 | ||
60 | static void path_command PARAMS ((char *, int)); | |
61 | ||
62 | static void unset_command PARAMS ((char *, int)); | |
63 | ||
64 | static void float_info PARAMS ((char *, int)); | |
65 | ||
66 | static void detach_command PARAMS ((char *, int)); | |
67 | ||
96baa820 JM |
68 | static void interrupt_target_command (char *args, int from_tty); |
69 | ||
c906108c SS |
70 | #if !defined (DO_REGISTERS_INFO) |
71 | static void do_registers_info PARAMS ((int, int)); | |
72 | #endif | |
73 | ||
74 | static void unset_environment_command PARAMS ((char *, int)); | |
75 | ||
76 | static void set_environment_command PARAMS ((char *, int)); | |
77 | ||
78 | static void environment_info PARAMS ((char *, int)); | |
79 | ||
80 | static void program_info PARAMS ((char *, int)); | |
81 | ||
82 | static void finish_command PARAMS ((char *, int)); | |
83 | ||
84 | static void signal_command PARAMS ((char *, int)); | |
85 | ||
86 | static void jump_command PARAMS ((char *, int)); | |
87 | ||
88 | static void step_1 PARAMS ((int, int, char *)); | |
89 | ||
90 | void nexti_command PARAMS ((char *, int)); | |
91 | ||
92 | void stepi_command PARAMS ((char *, int)); | |
93 | ||
94 | static void next_command PARAMS ((char *, int)); | |
95 | ||
96 | static void step_command PARAMS ((char *, int)); | |
97 | ||
98 | static void run_command PARAMS ((char *, int)); | |
99 | ||
392a587b JM |
100 | static void run_no_args_command PARAMS ((char *args, int from_tty)); |
101 | ||
102 | static void go_command PARAMS ((char *line_no, int from_tty)); | |
103 | ||
43ff13b4 JM |
104 | static int strip_bg_char PARAMS ((char **)); |
105 | ||
c906108c SS |
106 | void _initialize_infcmd PARAMS ((void)); |
107 | ||
108 | #define GO_USAGE "Usage: go <location>\n" | |
109 | ||
c906108c | 110 | static void breakpoint_auto_delete_contents PARAMS ((PTR)); |
c906108c SS |
111 | |
112 | #define ERROR_NO_INFERIOR \ | |
113 | if (!target_has_execution) error ("The program is not being run."); | |
114 | ||
115 | /* String containing arguments to give to the program, separated by spaces. | |
116 | Empty string (pointer to '\0') means no args. */ | |
117 | ||
118 | static char *inferior_args; | |
119 | ||
120 | /* File name for default use for standard in/out in the inferior. */ | |
121 | ||
122 | char *inferior_io_terminal; | |
123 | ||
124 | /* Pid of our debugged inferior, or 0 if no inferior now. | |
125 | Since various parts of infrun.c test this to see whether there is a program | |
126 | being debugged it should be nonzero (currently 3 is used) for remote | |
127 | debugging. */ | |
128 | ||
129 | int inferior_pid; | |
130 | ||
131 | /* Last signal that the inferior received (why it stopped). */ | |
132 | ||
133 | enum target_signal stop_signal; | |
134 | ||
135 | /* Address at which inferior stopped. */ | |
136 | ||
137 | CORE_ADDR stop_pc; | |
138 | ||
139 | /* Chain containing status of breakpoint(s) that we have stopped at. */ | |
140 | ||
141 | bpstat stop_bpstat; | |
142 | ||
143 | /* Flag indicating that a command has proceeded the inferior past the | |
144 | current breakpoint. */ | |
145 | ||
146 | int breakpoint_proceeded; | |
147 | ||
148 | /* Nonzero if stopped due to a step command. */ | |
149 | ||
150 | int stop_step; | |
151 | ||
152 | /* Nonzero if stopped due to completion of a stack dummy routine. */ | |
153 | ||
154 | int stop_stack_dummy; | |
155 | ||
156 | /* Nonzero if stopped due to a random (unexpected) signal in inferior | |
157 | process. */ | |
158 | ||
159 | int stopped_by_random_signal; | |
160 | ||
161 | /* Range to single step within. | |
162 | If this is nonzero, respond to a single-step signal | |
163 | by continuing to step if the pc is in this range. */ | |
164 | ||
c5aa993b JM |
165 | CORE_ADDR step_range_start; /* Inclusive */ |
166 | CORE_ADDR step_range_end; /* Exclusive */ | |
c906108c SS |
167 | |
168 | /* Stack frame address as of when stepping command was issued. | |
169 | This is how we know when we step into a subroutine call, | |
170 | and how to set the frame for the breakpoint used to step out. */ | |
171 | ||
172 | CORE_ADDR step_frame_address; | |
173 | ||
174 | /* Our notion of the current stack pointer. */ | |
175 | ||
176 | CORE_ADDR step_sp; | |
177 | ||
178 | /* 1 means step over all subroutine calls. | |
179 | 0 means don't step over calls (used by stepi). | |
180 | -1 means step over calls to undebuggable functions. */ | |
181 | ||
182 | int step_over_calls; | |
183 | ||
184 | /* If stepping, nonzero means step count is > 1 | |
185 | so don't print frame next time inferior stops | |
186 | if it stops due to stepping. */ | |
187 | ||
188 | int step_multi; | |
189 | ||
190 | /* Environment to use for running inferior, | |
191 | in format described in environ.h. */ | |
192 | ||
193 | struct environ *inferior_environ; | |
c906108c | 194 | \f |
c5aa993b | 195 | |
43ff13b4 JM |
196 | /* This function detects whether or not a '&' character (indicating |
197 | background execution) has been added as *the last* of the arguments ARGS | |
198 | of a command. If it has, it removes it and returns 1. Otherwise it | |
199 | does nothing and returns 0. */ | |
c5aa993b | 200 | static int |
43ff13b4 JM |
201 | strip_bg_char (args) |
202 | char **args; | |
203 | { | |
204 | char *p = NULL; | |
c5aa993b | 205 | |
9846de1b | 206 | p = strchr (*args, '&'); |
c5aa993b | 207 | |
9846de1b | 208 | if (p) |
43ff13b4 JM |
209 | { |
210 | if (p == (*args + strlen (*args) - 1)) | |
211 | { | |
c5aa993b | 212 | if (strlen (*args) > 1) |
43ff13b4 JM |
213 | { |
214 | do | |
215 | p--; | |
216 | while (*p == ' ' || *p == '\t'); | |
217 | *(p + 1) = '\0'; | |
218 | } | |
219 | else | |
220 | *args = 0; | |
221 | return 1; | |
222 | } | |
223 | } | |
224 | return 0; | |
225 | } | |
226 | ||
c906108c SS |
227 | /* ARGSUSED */ |
228 | void | |
229 | tty_command (file, from_tty) | |
230 | char *file; | |
231 | int from_tty; | |
232 | { | |
233 | if (file == 0) | |
234 | error_no_arg ("terminal name for running target process"); | |
235 | ||
236 | inferior_io_terminal = savestring (file, strlen (file)); | |
237 | } | |
238 | ||
239 | static void | |
240 | run_command (args, from_tty) | |
241 | char *args; | |
242 | int from_tty; | |
243 | { | |
244 | char *exec_file; | |
245 | ||
246 | dont_repeat (); | |
247 | ||
248 | if (inferior_pid != 0 && target_has_execution) | |
249 | { | |
adf40b2e JM |
250 | if (from_tty |
251 | && !query ("The program being debugged has been started already.\n\ | |
c906108c SS |
252 | Start it from the beginning? ")) |
253 | error ("Program not restarted."); | |
254 | target_kill (); | |
255 | #if defined(SOLIB_RESTART) | |
256 | SOLIB_RESTART (); | |
257 | #endif | |
258 | init_wait_for_inferior (); | |
259 | } | |
260 | ||
261 | clear_breakpoint_hit_counts (); | |
262 | ||
263 | exec_file = (char *) get_exec_file (0); | |
264 | ||
265 | /* Purge old solib objfiles. */ | |
266 | objfile_purge_solibs (); | |
267 | ||
268 | do_run_cleanups (NULL); | |
269 | ||
270 | /* The exec file is re-read every time we do a generic_mourn_inferior, so | |
271 | we just have to worry about the symbol file. */ | |
272 | reread_symbols (); | |
273 | ||
274 | /* We keep symbols from add-symbol-file, on the grounds that the | |
275 | user might want to add some symbols before running the program | |
276 | (right?). But sometimes (dynamic loading where the user manually | |
277 | introduces the new symbols with add-symbol-file), the code which | |
278 | the symbols describe does not persist between runs. Currently | |
279 | the user has to manually nuke all symbols between runs if they | |
280 | want them to go away (PR 2207). This is probably reasonable. */ | |
281 | ||
43ff13b4 JM |
282 | if (!args) |
283 | sync_execution = 1; | |
284 | else | |
c906108c SS |
285 | { |
286 | char *cmd; | |
43ff13b4 JM |
287 | int async_exec = strip_bg_char (&args); |
288 | ||
289 | /* If we get a request for running in the bg but the target | |
290 | doesn't support it, error out. */ | |
291 | if (async_p && async_exec && !target_has_async) | |
292 | error ("Asynchronous execution not supported on this target."); | |
293 | ||
294 | /* If we don't get a request of running in the bg, then we need | |
c5aa993b | 295 | to simulate synchronous (fg) execution. */ |
43ff13b4 JM |
296 | if (async_p && !async_exec && target_has_async) |
297 | { | |
298 | /* Simulate synchronous execution */ | |
299 | sync_execution = 1; | |
300 | } | |
301 | ||
302 | /* If there were other args, beside '&', process them. */ | |
303 | if (args) | |
304 | { | |
305 | cmd = concat ("set args ", args, NULL); | |
306 | make_cleanup (free, cmd); | |
307 | execute_command (cmd, from_tty); | |
308 | } | |
c906108c SS |
309 | } |
310 | ||
311 | if (from_tty) | |
312 | { | |
c5aa993b | 313 | puts_filtered ("Starting program: "); |
c906108c | 314 | if (exec_file) |
c5aa993b JM |
315 | puts_filtered (exec_file); |
316 | puts_filtered (" "); | |
317 | puts_filtered (inferior_args); | |
318 | puts_filtered ("\n"); | |
c906108c SS |
319 | gdb_flush (gdb_stdout); |
320 | } | |
321 | ||
322 | target_create_inferior (exec_file, inferior_args, | |
323 | environ_vector (inferior_environ)); | |
324 | } | |
325 | ||
326 | ||
327 | static void | |
328 | run_no_args_command (args, from_tty) | |
329 | char *args; | |
330 | int from_tty; | |
331 | { | |
c5aa993b JM |
332 | execute_command ("set args", from_tty); |
333 | run_command ((char *) NULL, from_tty); | |
c906108c | 334 | } |
c906108c | 335 | \f |
c5aa993b | 336 | |
c906108c SS |
337 | void |
338 | continue_command (proc_count_exp, from_tty) | |
339 | char *proc_count_exp; | |
340 | int from_tty; | |
341 | { | |
c5aa993b | 342 | int async_exec = 0; |
c906108c SS |
343 | ERROR_NO_INFERIOR; |
344 | ||
43ff13b4 JM |
345 | /* Find out whether we must run in the background. */ |
346 | if (proc_count_exp != NULL) | |
347 | async_exec = strip_bg_char (&proc_count_exp); | |
348 | ||
349 | /* If we must run in the background, but the target can't do it, | |
350 | error out. */ | |
351 | if (async_p && async_exec && !target_has_async) | |
352 | error ("Asynchronous execution not supported on this target."); | |
353 | ||
354 | /* If we are not asked to run in the bg, then prepare to run in the | |
355 | foreground, synchronously. */ | |
356 | if (async_p && !async_exec && target_has_async) | |
c5aa993b | 357 | { |
43ff13b4 JM |
358 | /* Simulate synchronous execution */ |
359 | sync_execution = 1; | |
360 | } | |
c906108c | 361 | |
43ff13b4 JM |
362 | /* If have argument (besides '&'), set proceed count of breakpoint |
363 | we stopped at. */ | |
c906108c SS |
364 | if (proc_count_exp != NULL) |
365 | { | |
366 | bpstat bs = stop_bpstat; | |
367 | int num = bpstat_num (&bs); | |
368 | if (num == 0 && from_tty) | |
369 | { | |
370 | printf_filtered | |
371 | ("Not stopped at any breakpoint; argument ignored.\n"); | |
372 | } | |
373 | while (num != 0) | |
374 | { | |
375 | set_ignore_count (num, | |
376 | parse_and_eval_address (proc_count_exp) - 1, | |
377 | from_tty); | |
378 | /* set_ignore_count prints a message ending with a period. | |
379 | So print two spaces before "Continuing.". */ | |
380 | if (from_tty) | |
381 | printf_filtered (" "); | |
382 | num = bpstat_num (&bs); | |
383 | } | |
384 | } | |
385 | ||
386 | if (from_tty) | |
387 | printf_filtered ("Continuing.\n"); | |
388 | ||
389 | clear_proceed_status (); | |
390 | ||
c5aa993b | 391 | proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_DEFAULT, 0); |
c906108c SS |
392 | } |
393 | \f | |
394 | /* Step until outside of current statement. */ | |
395 | ||
396 | /* ARGSUSED */ | |
397 | static void | |
398 | step_command (count_string, from_tty) | |
399 | char *count_string; | |
400 | int from_tty; | |
401 | { | |
402 | step_1 (0, 0, count_string); | |
403 | } | |
404 | ||
405 | /* Likewise, but skip over subroutine calls as if single instructions. */ | |
406 | ||
407 | /* ARGSUSED */ | |
408 | static void | |
409 | next_command (count_string, from_tty) | |
410 | char *count_string; | |
411 | int from_tty; | |
412 | { | |
413 | step_1 (1, 0, count_string); | |
414 | } | |
415 | ||
416 | /* Likewise, but step only one instruction. */ | |
417 | ||
418 | /* ARGSUSED */ | |
419 | void | |
420 | stepi_command (count_string, from_tty) | |
421 | char *count_string; | |
422 | int from_tty; | |
423 | { | |
424 | step_1 (0, 1, count_string); | |
425 | } | |
426 | ||
427 | /* ARGSUSED */ | |
428 | void | |
429 | nexti_command (count_string, from_tty) | |
430 | char *count_string; | |
431 | int from_tty; | |
432 | { | |
433 | step_1 (1, 1, count_string); | |
434 | } | |
435 | ||
436 | static void | |
437 | step_1 (skip_subroutines, single_inst, count_string) | |
438 | int skip_subroutines; | |
439 | int single_inst; | |
440 | char *count_string; | |
441 | { | |
442 | register int count = 1; | |
443 | struct frame_info *frame; | |
444 | struct cleanup *cleanups = 0; | |
43ff13b4 | 445 | int async_exec = 0; |
c5aa993b | 446 | |
c906108c | 447 | ERROR_NO_INFERIOR; |
43ff13b4 JM |
448 | |
449 | if (count_string) | |
450 | async_exec = strip_bg_char (&count_string); | |
c5aa993b | 451 | |
43ff13b4 JM |
452 | /* If we get a request for running in the bg but the target |
453 | doesn't support it, error out. */ | |
454 | if (async_p && async_exec && !target_has_async) | |
455 | error ("Asynchronous execution not supported on this target."); | |
456 | ||
457 | /* If we don't get a request of running in the bg, then we need | |
458 | to simulate synchronous (fg) execution. */ | |
459 | if (async_p && !async_exec && target_has_async) | |
460 | { | |
461 | /* Simulate synchronous execution */ | |
462 | sync_execution = 1; | |
463 | } | |
464 | ||
c906108c SS |
465 | count = count_string ? parse_and_eval_address (count_string) : 1; |
466 | ||
c5aa993b | 467 | if (!single_inst || skip_subroutines) /* leave si command alone */ |
c906108c | 468 | { |
c5aa993b JM |
469 | enable_longjmp_breakpoint (); |
470 | cleanups = make_cleanup ((make_cleanup_func) disable_longjmp_breakpoint, | |
471 | 0); | |
c906108c SS |
472 | } |
473 | ||
474 | for (; count > 0; count--) | |
475 | { | |
476 | clear_proceed_status (); | |
477 | ||
478 | frame = get_current_frame (); | |
c5aa993b | 479 | if (!frame) /* Avoid coredump here. Why tho? */ |
c906108c SS |
480 | error ("No current frame"); |
481 | step_frame_address = FRAME_FP (frame); | |
482 | step_sp = read_sp (); | |
483 | ||
c5aa993b | 484 | if (!single_inst) |
c906108c SS |
485 | { |
486 | find_pc_line_pc_range (stop_pc, &step_range_start, &step_range_end); | |
487 | if (step_range_end == 0) | |
488 | { | |
489 | char *name; | |
490 | if (find_pc_partial_function (stop_pc, &name, &step_range_start, | |
491 | &step_range_end) == 0) | |
492 | error ("Cannot find bounds of current function"); | |
493 | ||
494 | target_terminal_ours (); | |
495 | printf_filtered ("\ | |
496 | Single stepping until exit from function %s, \n\ | |
497 | which has no line number information.\n", name); | |
498 | } | |
499 | } | |
500 | else | |
501 | { | |
502 | /* Say we are stepping, but stop after one insn whatever it does. */ | |
503 | step_range_start = step_range_end = 1; | |
504 | if (!skip_subroutines) | |
505 | /* It is stepi. | |
506 | Don't step over function calls, not even to functions lacking | |
507 | line numbers. */ | |
508 | step_over_calls = 0; | |
509 | } | |
510 | ||
511 | if (skip_subroutines) | |
512 | step_over_calls = 1; | |
513 | ||
514 | step_multi = (count > 1); | |
c5aa993b JM |
515 | proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_DEFAULT, 1); |
516 | if (!stop_step) | |
c906108c SS |
517 | break; |
518 | ||
519 | /* FIXME: On nexti, this may have already been done (when we hit the | |
c5aa993b JM |
520 | step resume break, I think). Probably this should be moved to |
521 | wait_for_inferior (near the top). */ | |
c906108c | 522 | #if defined (SHIFT_INST_REGS) |
c5aa993b | 523 | SHIFT_INST_REGS (); |
c906108c SS |
524 | #endif |
525 | } | |
526 | ||
527 | if (!single_inst || skip_subroutines) | |
c5aa993b | 528 | do_cleanups (cleanups); |
c906108c SS |
529 | } |
530 | \f | |
531 | /* Continue program at specified address. */ | |
532 | ||
533 | static void | |
534 | jump_command (arg, from_tty) | |
535 | char *arg; | |
536 | int from_tty; | |
537 | { | |
538 | register CORE_ADDR addr; | |
539 | struct symtabs_and_lines sals; | |
540 | struct symtab_and_line sal; | |
541 | struct symbol *fn; | |
542 | struct symbol *sfn; | |
43ff13b4 | 543 | int async_exec = 0; |
c5aa993b | 544 | |
c906108c SS |
545 | ERROR_NO_INFERIOR; |
546 | ||
43ff13b4 JM |
547 | /* Find out whether we must run in the background. */ |
548 | if (arg != NULL) | |
549 | async_exec = strip_bg_char (&arg); | |
550 | ||
551 | /* If we must run in the background, but the target can't do it, | |
552 | error out. */ | |
553 | if (async_p && async_exec && !target_has_async) | |
554 | error ("Asynchronous execution not supported on this target."); | |
555 | ||
556 | /* If we are not asked to run in the bg, then prepare to run in the | |
557 | foreground, synchronously. */ | |
558 | if (async_p && !async_exec && target_has_async) | |
c5aa993b | 559 | { |
43ff13b4 JM |
560 | /* Simulate synchronous execution */ |
561 | sync_execution = 1; | |
562 | } | |
563 | ||
c906108c SS |
564 | if (!arg) |
565 | error_no_arg ("starting address"); | |
566 | ||
567 | sals = decode_line_spec_1 (arg, 1); | |
568 | if (sals.nelts != 1) | |
569 | { | |
570 | error ("Unreasonable jump request"); | |
571 | } | |
572 | ||
573 | sal = sals.sals[0]; | |
c5aa993b | 574 | free ((PTR) sals.sals); |
c906108c SS |
575 | |
576 | if (sal.symtab == 0 && sal.pc == 0) | |
577 | error ("No source file has been specified."); | |
578 | ||
c5aa993b | 579 | resolve_sal_pc (&sal); /* May error out */ |
c906108c SS |
580 | |
581 | /* See if we are trying to jump to another function. */ | |
582 | fn = get_frame_function (get_current_frame ()); | |
583 | sfn = find_pc_function (sal.pc); | |
584 | if (fn != NULL && sfn != fn) | |
585 | { | |
586 | if (!query ("Line %d is not in `%s'. Jump anyway? ", sal.line, | |
587 | SYMBOL_SOURCE_NAME (fn))) | |
588 | { | |
589 | error ("Not confirmed."); | |
590 | /* NOTREACHED */ | |
591 | } | |
592 | } | |
593 | ||
c5aa993b | 594 | if (sfn != NULL) |
c906108c SS |
595 | { |
596 | fixup_symbol_section (sfn, 0); | |
c5aa993b | 597 | if (section_is_overlay (SYMBOL_BFD_SECTION (sfn)) && |
c906108c SS |
598 | !section_is_mapped (SYMBOL_BFD_SECTION (sfn))) |
599 | { | |
600 | if (!query ("WARNING!!! Destination is in unmapped overlay! Jump anyway? ")) | |
601 | { | |
602 | error ("Not confirmed."); | |
603 | /* NOTREACHED */ | |
604 | } | |
605 | } | |
606 | } | |
607 | ||
c906108c SS |
608 | addr = sal.pc; |
609 | ||
610 | if (from_tty) | |
611 | { | |
612 | printf_filtered ("Continuing at "); | |
613 | print_address_numeric (addr, 1, gdb_stdout); | |
614 | printf_filtered (".\n"); | |
615 | } | |
616 | ||
617 | clear_proceed_status (); | |
618 | proceed (addr, TARGET_SIGNAL_0, 0); | |
619 | } | |
c906108c | 620 | \f |
c5aa993b | 621 | |
c906108c SS |
622 | /* Go to line or address in current procedure */ |
623 | static void | |
b83266a0 | 624 | go_command (line_no, from_tty) |
c906108c SS |
625 | char *line_no; |
626 | int from_tty; | |
627 | { | |
c5aa993b | 628 | if (line_no == (char *) NULL || !*line_no) |
b83266a0 | 629 | printf_filtered (GO_USAGE); |
c906108c SS |
630 | else |
631 | { | |
b83266a0 SS |
632 | tbreak_command (line_no, from_tty); |
633 | jump_command (line_no, from_tty); | |
c906108c SS |
634 | } |
635 | } | |
c906108c | 636 | \f |
c5aa993b | 637 | |
c906108c SS |
638 | /* Continue program giving it specified signal. */ |
639 | ||
640 | static void | |
641 | signal_command (signum_exp, from_tty) | |
642 | char *signum_exp; | |
643 | int from_tty; | |
644 | { | |
645 | enum target_signal oursig; | |
646 | ||
647 | dont_repeat (); /* Too dangerous. */ | |
648 | ERROR_NO_INFERIOR; | |
649 | ||
650 | if (!signum_exp) | |
651 | error_no_arg ("signal number"); | |
652 | ||
653 | /* It would be even slicker to make signal names be valid expressions, | |
654 | (the type could be "enum $signal" or some such), then the user could | |
655 | assign them to convenience variables. */ | |
656 | oursig = target_signal_from_name (signum_exp); | |
657 | ||
658 | if (oursig == TARGET_SIGNAL_UNKNOWN) | |
659 | { | |
660 | /* No, try numeric. */ | |
661 | int num = parse_and_eval_address (signum_exp); | |
662 | ||
663 | if (num == 0) | |
664 | oursig = TARGET_SIGNAL_0; | |
665 | else | |
666 | oursig = target_signal_from_command (num); | |
667 | } | |
668 | ||
669 | if (from_tty) | |
670 | { | |
671 | if (oursig == TARGET_SIGNAL_0) | |
672 | printf_filtered ("Continuing with no signal.\n"); | |
673 | else | |
674 | printf_filtered ("Continuing with signal %s.\n", | |
675 | target_signal_to_name (oursig)); | |
676 | } | |
677 | ||
678 | clear_proceed_status (); | |
679 | /* "signal 0" should not get stuck if we are stopped at a breakpoint. | |
680 | FIXME: Neither should "signal foo" but when I tried passing | |
681 | (CORE_ADDR)-1 unconditionally I got a testsuite failure which I haven't | |
682 | tried to track down yet. */ | |
c5aa993b | 683 | proceed (oursig == TARGET_SIGNAL_0 ? (CORE_ADDR) - 1 : stop_pc, oursig, 0); |
c906108c SS |
684 | } |
685 | ||
686 | /* Call breakpoint_auto_delete on the current contents of the bpstat | |
687 | pointed to by arg (which is really a bpstat *). */ | |
688 | ||
c906108c SS |
689 | static void |
690 | breakpoint_auto_delete_contents (arg) | |
691 | PTR arg; | |
692 | { | |
c5aa993b | 693 | breakpoint_auto_delete (*(bpstat *) arg); |
c906108c SS |
694 | } |
695 | ||
c906108c SS |
696 | |
697 | /* Execute a "stack dummy", a piece of code stored in the stack | |
698 | by the debugger to be executed in the inferior. | |
699 | ||
700 | To call: first, do PUSH_DUMMY_FRAME. | |
701 | Then push the contents of the dummy. It should end with a breakpoint insn. | |
702 | Then call here, passing address at which to start the dummy. | |
703 | ||
704 | The contents of all registers are saved before the dummy frame is popped | |
705 | and copied into the buffer BUFFER. | |
706 | ||
707 | The dummy's frame is automatically popped whenever that break is hit. | |
708 | If that is the first time the program stops, run_stack_dummy | |
709 | returns to its caller with that frame already gone and returns 0. | |
710 | Otherwise, run_stack-dummy returns 1 (the frame will eventually be popped | |
711 | when we do hit that breakpoint). */ | |
712 | ||
c906108c SS |
713 | int |
714 | run_stack_dummy (addr, buffer) | |
715 | CORE_ADDR addr; | |
7a292a7a | 716 | char *buffer; |
c906108c SS |
717 | { |
718 | struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); | |
719 | ||
720 | /* Now proceed, having reached the desired place. */ | |
721 | clear_proceed_status (); | |
96baa820 | 722 | |
7a292a7a SS |
723 | if (CALL_DUMMY_BREAKPOINT_OFFSET_P) |
724 | { | |
725 | struct breakpoint *bpt; | |
726 | struct symtab_and_line sal; | |
c5aa993b JM |
727 | |
728 | INIT_SAL (&sal); /* initialize to zeroes */ | |
7a292a7a SS |
729 | if (CALL_DUMMY_LOCATION == AT_ENTRY_POINT) |
730 | { | |
731 | sal.pc = CALL_DUMMY_ADDRESS (); | |
732 | } | |
733 | else | |
734 | { | |
735 | sal.pc = addr - CALL_DUMMY_START_OFFSET + CALL_DUMMY_BREAKPOINT_OFFSET; | |
736 | } | |
737 | sal.section = find_pc_overlay (sal.pc); | |
c5aa993b | 738 | |
7a292a7a | 739 | /* Set up a FRAME for the dummy frame so we can pass it to |
c5aa993b JM |
740 | set_momentary_breakpoint. We need to give the breakpoint a |
741 | frame in case there is only one copy of the dummy (e.g. | |
742 | CALL_DUMMY_LOCATION == AFTER_TEXT_END). */ | |
7a292a7a SS |
743 | flush_cached_frames (); |
744 | set_current_frame (create_new_frame (read_fp (), sal.pc)); | |
c5aa993b | 745 | |
7a292a7a | 746 | /* If defined, CALL_DUMMY_BREAKPOINT_OFFSET is where we need to put |
c5aa993b JM |
747 | a breakpoint instruction. If not, the call dummy already has the |
748 | breakpoint instruction in it. | |
749 | ||
750 | addr is the address of the call dummy plus the CALL_DUMMY_START_OFFSET, | |
751 | so we need to subtract the CALL_DUMMY_START_OFFSET. */ | |
7a292a7a SS |
752 | bpt = set_momentary_breakpoint (sal, |
753 | get_current_frame (), | |
754 | bp_call_dummy); | |
755 | bpt->disposition = del; | |
c5aa993b | 756 | |
7a292a7a | 757 | /* If all error()s out of proceed ended up calling normal_stop (and |
c5aa993b JM |
758 | perhaps they should; it already does in the special case of error |
759 | out of resume()), then we wouldn't need this. */ | |
7a292a7a SS |
760 | make_cleanup (breakpoint_auto_delete_contents, &stop_bpstat); |
761 | } | |
c906108c SS |
762 | |
763 | disable_watchpoints_before_interactive_call_start (); | |
764 | proceed_to_finish = 1; /* We want stop_registers, please... */ | |
765 | proceed (addr, TARGET_SIGNAL_0, 0); | |
766 | enable_watchpoints_after_interactive_call_stop (); | |
767 | ||
768 | discard_cleanups (old_cleanups); | |
769 | ||
770 | if (!stop_stack_dummy) | |
771 | return 1; | |
772 | ||
773 | /* On return, the stack dummy has been popped already. */ | |
774 | ||
7a292a7a | 775 | memcpy (buffer, stop_registers, REGISTER_BYTES); |
c906108c SS |
776 | return 0; |
777 | } | |
778 | \f | |
779 | /* Proceed until we reach a different source line with pc greater than | |
780 | our current one or exit the function. We skip calls in both cases. | |
781 | ||
782 | Note that eventually this command should probably be changed so | |
783 | that only source lines are printed out when we hit the breakpoint | |
784 | we set. This may involve changes to wait_for_inferior and the | |
785 | proceed status code. */ | |
786 | ||
787 | /* ARGSUSED */ | |
788 | static void | |
789 | until_next_command (from_tty) | |
790 | int from_tty; | |
791 | { | |
792 | struct frame_info *frame; | |
793 | CORE_ADDR pc; | |
794 | struct symbol *func; | |
795 | struct symtab_and_line sal; | |
c5aa993b | 796 | |
c906108c SS |
797 | clear_proceed_status (); |
798 | ||
799 | frame = get_current_frame (); | |
800 | ||
801 | /* Step until either exited from this function or greater | |
802 | than the current line (if in symbolic section) or pc (if | |
803 | not). */ | |
804 | ||
805 | pc = read_pc (); | |
806 | func = find_pc_function (pc); | |
c5aa993b | 807 | |
c906108c SS |
808 | if (!func) |
809 | { | |
810 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (pc); | |
c5aa993b | 811 | |
c906108c SS |
812 | if (msymbol == NULL) |
813 | error ("Execution is not within a known function."); | |
c5aa993b | 814 | |
c906108c SS |
815 | step_range_start = SYMBOL_VALUE_ADDRESS (msymbol); |
816 | step_range_end = pc; | |
817 | } | |
818 | else | |
819 | { | |
820 | sal = find_pc_line (pc, 0); | |
c5aa993b | 821 | |
c906108c SS |
822 | step_range_start = BLOCK_START (SYMBOL_BLOCK_VALUE (func)); |
823 | step_range_end = sal.end; | |
824 | } | |
c5aa993b | 825 | |
c906108c SS |
826 | step_over_calls = 1; |
827 | step_frame_address = FRAME_FP (frame); | |
828 | step_sp = read_sp (); | |
829 | ||
830 | step_multi = 0; /* Only one call to proceed */ | |
c5aa993b JM |
831 | |
832 | proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_DEFAULT, 1); | |
c906108c SS |
833 | } |
834 | ||
c5aa993b | 835 | static void |
c906108c SS |
836 | until_command (arg, from_tty) |
837 | char *arg; | |
838 | int from_tty; | |
839 | { | |
43ff13b4 JM |
840 | int async_exec = 0; |
841 | ||
c906108c SS |
842 | if (!target_has_execution) |
843 | error ("The program is not running."); | |
43ff13b4 JM |
844 | |
845 | /* Find out whether we must run in the background. */ | |
846 | if (arg != NULL) | |
847 | async_exec = strip_bg_char (&arg); | |
848 | ||
849 | /* If we must run in the background, but the target can't do it, | |
850 | error out. */ | |
851 | if (async_p && async_exec && !target_has_async) | |
852 | error ("Asynchronous execution not supported on this target."); | |
853 | ||
854 | /* If we are not asked to run in the bg, then prepare to run in the | |
855 | foreground, synchronously. */ | |
856 | if (async_p && !async_exec && target_has_async) | |
c5aa993b | 857 | { |
43ff13b4 JM |
858 | /* Simulate synchronous execution */ |
859 | sync_execution = 1; | |
860 | } | |
861 | ||
c906108c SS |
862 | if (arg) |
863 | until_break_command (arg, from_tty); | |
864 | else | |
865 | until_next_command (from_tty); | |
866 | } | |
867 | \f | |
43ff13b4 JM |
868 | |
869 | /* Stuff that needs to be done by the finish command after the target | |
870 | has stopped. In asynchronous mode, we wait for the target to stop in | |
871 | the call to poll or select in the event loop, so it is impossible to | |
872 | do all the stuff as part of the finish_command function itself. The | |
873 | only chance we have to complete this command is in | |
874 | fetch_inferior_event, which is called by the event loop as soon as it | |
875 | detects that the target has stopped. This function is called via the | |
876 | cmd_continaution pointer. */ | |
877 | void | |
878 | finish_command_continuation (arg) | |
879 | struct continuation_arg *arg; | |
880 | { | |
881 | register struct symbol *function; | |
882 | struct breakpoint *breakpoint; | |
c5aa993b | 883 | |
43ff13b4 JM |
884 | breakpoint = (struct breakpoint *) arg->data; |
885 | function = (struct symbol *) (arg->next)->data; | |
886 | ||
c5aa993b | 887 | if (bpstat_find_breakpoint (stop_bpstat, breakpoint) != NULL |
43ff13b4 JM |
888 | && function != 0) |
889 | { | |
890 | struct type *value_type; | |
891 | register value_ptr val; | |
892 | CORE_ADDR funcaddr; | |
893 | int struct_return; | |
894 | ||
895 | value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (function)); | |
896 | if (!value_type) | |
96baa820 | 897 | internal_error ("finish_command: function has no target type"); |
c5aa993b | 898 | |
43ff13b4 JM |
899 | if (TYPE_CODE (value_type) == TYPE_CODE_VOID) |
900 | { | |
901 | do_exec_cleanups (ALL_CLEANUPS); | |
902 | return; | |
903 | } | |
904 | ||
905 | funcaddr = BLOCK_START (SYMBOL_BLOCK_VALUE (function)); | |
906 | ||
907 | struct_return = using_struct_return (value_of_variable (function, NULL), | |
908 | ||
c5aa993b JM |
909 | funcaddr, |
910 | check_typedef (value_type), | |
911 | BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function))); | |
43ff13b4 JM |
912 | |
913 | if (!struct_return) | |
c5aa993b JM |
914 | { |
915 | val = value_being_returned (value_type, stop_registers, struct_return); | |
916 | printf_filtered ("Value returned is $%d = ", record_latest_value (val)); | |
917 | value_print (val, gdb_stdout, 0, Val_no_prettyprint); | |
918 | printf_filtered ("\n"); | |
919 | } | |
43ff13b4 | 920 | else |
c5aa993b JM |
921 | { |
922 | /* We cannot determine the contents of the structure because | |
923 | it is on the stack, and we don't know where, since we did not | |
924 | initiate the call, as opposed to the call_function_by_hand case */ | |
43ff13b4 | 925 | #ifdef VALUE_RETURNED_FROM_STACK |
c5aa993b JM |
926 | val = 0; |
927 | printf_filtered ("Value returned has type: %s.", | |
43ff13b4 | 928 | TYPE_NAME (value_type)); |
c5aa993b | 929 | printf_filtered (" Cannot determine contents\n"); |
43ff13b4 | 930 | #else |
c5aa993b | 931 | val = value_being_returned (value_type, stop_registers, |
43ff13b4 | 932 | struct_return); |
c5aa993b | 933 | printf_filtered ("Value returned is $%d = ", |
43ff13b4 | 934 | record_latest_value (val)); |
c5aa993b JM |
935 | value_print (val, gdb_stdout, 0, Val_no_prettyprint); |
936 | printf_filtered ("\n"); | |
43ff13b4 | 937 | #endif |
c5aa993b JM |
938 | |
939 | } | |
43ff13b4 JM |
940 | } |
941 | do_exec_cleanups (ALL_CLEANUPS); | |
942 | } | |
943 | ||
c906108c SS |
944 | /* "finish": Set a temporary breakpoint at the place |
945 | the selected frame will return to, then continue. */ | |
946 | ||
947 | static void | |
948 | finish_command (arg, from_tty) | |
949 | char *arg; | |
950 | int from_tty; | |
951 | { | |
952 | struct symtab_and_line sal; | |
953 | register struct frame_info *frame; | |
954 | register struct symbol *function; | |
955 | struct breakpoint *breakpoint; | |
956 | struct cleanup *old_chain; | |
43ff13b4 JM |
957 | struct continuation_arg *arg1, *arg2; |
958 | ||
959 | int async_exec = 0; | |
960 | ||
961 | /* Find out whether we must run in the background. */ | |
962 | if (arg != NULL) | |
963 | async_exec = strip_bg_char (&arg); | |
964 | ||
965 | /* If we must run in the background, but the target can't do it, | |
966 | error out. */ | |
967 | if (async_p && async_exec && !target_has_async) | |
968 | error ("Asynchronous execution not supported on this target."); | |
969 | ||
970 | /* If we are not asked to run in the bg, then prepare to run in the | |
971 | foreground, synchronously. */ | |
972 | if (async_p && !async_exec && target_has_async) | |
c5aa993b | 973 | { |
43ff13b4 JM |
974 | /* Simulate synchronous execution */ |
975 | sync_execution = 1; | |
976 | } | |
c906108c SS |
977 | |
978 | if (arg) | |
979 | error ("The \"finish\" command does not take any arguments."); | |
980 | if (!target_has_execution) | |
981 | error ("The program is not running."); | |
982 | if (selected_frame == NULL) | |
983 | error ("No selected frame."); | |
984 | ||
985 | frame = get_prev_frame (selected_frame); | |
986 | if (frame == 0) | |
987 | error ("\"finish\" not meaningful in the outermost frame."); | |
988 | ||
989 | clear_proceed_status (); | |
990 | ||
991 | sal = find_pc_line (frame->pc, 0); | |
992 | sal.pc = frame->pc; | |
993 | ||
994 | breakpoint = set_momentary_breakpoint (sal, frame, bp_finish); | |
995 | ||
43ff13b4 JM |
996 | if (!async_p || !target_has_async) |
997 | old_chain = make_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint); | |
998 | else | |
999 | make_exec_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint); | |
c906108c SS |
1000 | |
1001 | /* Find the function we will return from. */ | |
1002 | ||
1003 | function = find_pc_function (selected_frame->pc); | |
1004 | ||
1005 | /* Print info on the selected frame, including level number | |
1006 | but not source. */ | |
1007 | if (from_tty) | |
1008 | { | |
1009 | printf_filtered ("Run till exit from "); | |
1010 | print_stack_frame (selected_frame, selected_frame_level, 0); | |
1011 | } | |
1012 | ||
43ff13b4 JM |
1013 | /* If running asynchronously and the target support asynchronous |
1014 | execution, set things up for the rest of the finish command to be | |
1015 | completed later on, when gdb has detected that the target has | |
1016 | stopped, in fetch_inferior_event. */ | |
1017 | if (async_p && target_has_async) | |
1018 | { | |
c5aa993b | 1019 | arg1 = |
43ff13b4 | 1020 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); |
c5aa993b | 1021 | arg2 = |
43ff13b4 JM |
1022 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); |
1023 | arg1->next = arg2; | |
1024 | arg2->next = NULL; | |
1025 | arg1->data = (PTR) breakpoint; | |
1026 | arg2->data = (PTR) function; | |
1027 | add_continuation (finish_command_continuation, arg1); | |
1028 | } | |
1029 | ||
c5aa993b JM |
1030 | proceed_to_finish = 1; /* We want stop_registers, please... */ |
1031 | proceed ((CORE_ADDR) - 1, TARGET_SIGNAL_DEFAULT, 0); | |
c906108c | 1032 | |
43ff13b4 JM |
1033 | /* Do this only if not running asynchronously or if the target |
1034 | cannot do async execution. Otherwise, complete this command when | |
c5aa993b JM |
1035 | the target actually stops, in fetch_inferior_event. */ |
1036 | if (!async_p || !target_has_async) | |
1037 | { | |
1038 | ||
1039 | /* Did we stop at our breakpoint? */ | |
1040 | if (bpstat_find_breakpoint (stop_bpstat, breakpoint) != NULL | |
1041 | && function != 0) | |
1042 | { | |
1043 | struct type *value_type; | |
1044 | register value_ptr val; | |
1045 | CORE_ADDR funcaddr; | |
1046 | int struct_return; | |
1047 | ||
1048 | value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (function)); | |
1049 | if (!value_type) | |
96baa820 | 1050 | internal_error ("finish_command: function has no target type"); |
c5aa993b JM |
1051 | |
1052 | /* FIXME: Shouldn't we do the cleanups before returning? */ | |
1053 | if (TYPE_CODE (value_type) == TYPE_CODE_VOID) | |
1054 | return; | |
1055 | ||
1056 | funcaddr = BLOCK_START (SYMBOL_BLOCK_VALUE (function)); | |
1057 | ||
1058 | struct_return = | |
1059 | using_struct_return (value_of_variable (function, NULL), | |
1060 | funcaddr, | |
1061 | check_typedef (value_type), | |
1062 | BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function))); | |
1063 | ||
1064 | if (!struct_return) | |
1065 | { | |
1066 | val = | |
1067 | value_being_returned (value_type, stop_registers, struct_return); | |
1068 | printf_filtered ("Value returned is $%d = ", | |
1069 | record_latest_value (val)); | |
1070 | value_print (val, gdb_stdout, 0, Val_no_prettyprint); | |
1071 | printf_filtered ("\n"); | |
1072 | } | |
1073 | else | |
1074 | { | |
1075 | /* We cannot determine the contents of the structure | |
1076 | because it is on the stack, and we don't know | |
1077 | where, since we did not initiate the call, as | |
1078 | opposed to the call_function_by_hand case */ | |
c906108c | 1079 | #ifdef VALUE_RETURNED_FROM_STACK |
c5aa993b JM |
1080 | val = 0; |
1081 | printf_filtered ("Value returned has type: %s.", | |
1082 | TYPE_NAME (value_type)); | |
1083 | printf_filtered (" Cannot determine contents\n"); | |
c906108c | 1084 | #else |
c5aa993b JM |
1085 | val = value_being_returned (value_type, stop_registers, |
1086 | struct_return); | |
1087 | printf_filtered ("Value returned is $%d = ", | |
1088 | record_latest_value (val)); | |
1089 | value_print (val, gdb_stdout, 0, Val_no_prettyprint); | |
1090 | printf_filtered ("\n"); | |
1091 | #endif | |
1092 | } | |
1093 | } | |
1094 | do_cleanups (old_chain); | |
1095 | } | |
c906108c SS |
1096 | } |
1097 | \f | |
1098 | /* ARGSUSED */ | |
1099 | static void | |
1100 | program_info (args, from_tty) | |
c5aa993b JM |
1101 | char *args; |
1102 | int from_tty; | |
c906108c SS |
1103 | { |
1104 | bpstat bs = stop_bpstat; | |
1105 | int num = bpstat_num (&bs); | |
c5aa993b | 1106 | |
c906108c SS |
1107 | if (!target_has_execution) |
1108 | { | |
1109 | printf_filtered ("The program being debugged is not being run.\n"); | |
1110 | return; | |
1111 | } | |
1112 | ||
1113 | target_files_info (); | |
1114 | printf_filtered ("Program stopped at %s.\n", | |
c5aa993b | 1115 | local_hex_string ((unsigned long) stop_pc)); |
c906108c SS |
1116 | if (stop_step) |
1117 | printf_filtered ("It stopped after being stepped.\n"); | |
1118 | else if (num != 0) | |
1119 | { | |
1120 | /* There may be several breakpoints in the same place, so this | |
c5aa993b | 1121 | isn't as strange as it seems. */ |
c906108c SS |
1122 | while (num != 0) |
1123 | { | |
1124 | if (num < 0) | |
1125 | { | |
1126 | printf_filtered ("It stopped at a breakpoint that has "); | |
1127 | printf_filtered ("since been deleted.\n"); | |
1128 | } | |
1129 | else | |
1130 | printf_filtered ("It stopped at breakpoint %d.\n", num); | |
1131 | num = bpstat_num (&bs); | |
1132 | } | |
1133 | } | |
1134 | else if (stop_signal != TARGET_SIGNAL_0) | |
1135 | { | |
1136 | printf_filtered ("It stopped with signal %s, %s.\n", | |
1137 | target_signal_to_name (stop_signal), | |
1138 | target_signal_to_string (stop_signal)); | |
1139 | } | |
1140 | ||
1141 | if (!from_tty) | |
1142 | { | |
1143 | printf_filtered ("Type \"info stack\" or \"info registers\" "); | |
1144 | printf_filtered ("for more information.\n"); | |
1145 | } | |
1146 | } | |
1147 | \f | |
1148 | static void | |
1149 | environment_info (var, from_tty) | |
1150 | char *var; | |
1151 | int from_tty; | |
1152 | { | |
1153 | if (var) | |
1154 | { | |
1155 | register char *val = get_in_environ (inferior_environ, var); | |
1156 | if (val) | |
1157 | { | |
1158 | puts_filtered (var); | |
1159 | puts_filtered (" = "); | |
1160 | puts_filtered (val); | |
1161 | puts_filtered ("\n"); | |
1162 | } | |
1163 | else | |
1164 | { | |
1165 | puts_filtered ("Environment variable \""); | |
1166 | puts_filtered (var); | |
1167 | puts_filtered ("\" not defined.\n"); | |
1168 | } | |
1169 | } | |
1170 | else | |
1171 | { | |
1172 | register char **vector = environ_vector (inferior_environ); | |
1173 | while (*vector) | |
1174 | { | |
1175 | puts_filtered (*vector++); | |
1176 | puts_filtered ("\n"); | |
1177 | } | |
1178 | } | |
1179 | } | |
1180 | ||
1181 | static void | |
1182 | set_environment_command (arg, from_tty) | |
1183 | char *arg; | |
1184 | int from_tty; | |
1185 | { | |
1186 | register char *p, *val, *var; | |
1187 | int nullset = 0; | |
1188 | ||
1189 | if (arg == 0) | |
1190 | error_no_arg ("environment variable and value"); | |
1191 | ||
1192 | /* Find seperation between variable name and value */ | |
1193 | p = (char *) strchr (arg, '='); | |
1194 | val = (char *) strchr (arg, ' '); | |
1195 | ||
1196 | if (p != 0 && val != 0) | |
1197 | { | |
1198 | /* We have both a space and an equals. If the space is before the | |
c5aa993b JM |
1199 | equals, walk forward over the spaces til we see a nonspace |
1200 | (possibly the equals). */ | |
c906108c SS |
1201 | if (p > val) |
1202 | while (*val == ' ') | |
1203 | val++; | |
1204 | ||
1205 | /* Now if the = is after the char following the spaces, | |
c5aa993b | 1206 | take the char following the spaces. */ |
c906108c SS |
1207 | if (p > val) |
1208 | p = val - 1; | |
1209 | } | |
1210 | else if (val != 0 && p == 0) | |
1211 | p = val; | |
1212 | ||
1213 | if (p == arg) | |
1214 | error_no_arg ("environment variable to set"); | |
1215 | ||
1216 | if (p == 0 || p[1] == 0) | |
1217 | { | |
1218 | nullset = 1; | |
1219 | if (p == 0) | |
1220 | p = arg + strlen (arg); /* So that savestring below will work */ | |
1221 | } | |
1222 | else | |
1223 | { | |
1224 | /* Not setting variable value to null */ | |
1225 | val = p + 1; | |
1226 | while (*val == ' ' || *val == '\t') | |
1227 | val++; | |
1228 | } | |
1229 | ||
c5aa993b JM |
1230 | while (p != arg && (p[-1] == ' ' || p[-1] == '\t')) |
1231 | p--; | |
c906108c SS |
1232 | |
1233 | var = savestring (arg, p - arg); | |
1234 | if (nullset) | |
1235 | { | |
1236 | printf_filtered ("Setting environment variable "); | |
1237 | printf_filtered ("\"%s\" to null value.\n", var); | |
1238 | set_in_environ (inferior_environ, var, ""); | |
1239 | } | |
1240 | else | |
1241 | set_in_environ (inferior_environ, var, val); | |
1242 | free (var); | |
1243 | } | |
1244 | ||
1245 | static void | |
1246 | unset_environment_command (var, from_tty) | |
1247 | char *var; | |
1248 | int from_tty; | |
1249 | { | |
1250 | if (var == 0) | |
1251 | { | |
1252 | /* If there is no argument, delete all environment variables. | |
c5aa993b | 1253 | Ask for confirmation if reading from the terminal. */ |
c906108c SS |
1254 | if (!from_tty || query ("Delete all environment variables? ")) |
1255 | { | |
1256 | free_environ (inferior_environ); | |
1257 | inferior_environ = make_environ (); | |
1258 | } | |
1259 | } | |
1260 | else | |
1261 | unset_in_environ (inferior_environ, var); | |
1262 | } | |
1263 | ||
1264 | /* Handle the execution path (PATH variable) */ | |
1265 | ||
1266 | static const char path_var_name[] = "PATH"; | |
1267 | ||
1268 | /* ARGSUSED */ | |
1269 | static void | |
1270 | path_info (args, from_tty) | |
1271 | char *args; | |
1272 | int from_tty; | |
1273 | { | |
1274 | puts_filtered ("Executable and object file path: "); | |
1275 | puts_filtered (get_in_environ (inferior_environ, path_var_name)); | |
1276 | puts_filtered ("\n"); | |
1277 | } | |
1278 | ||
1279 | /* Add zero or more directories to the front of the execution path. */ | |
1280 | ||
1281 | static void | |
1282 | path_command (dirname, from_tty) | |
1283 | char *dirname; | |
1284 | int from_tty; | |
1285 | { | |
1286 | char *exec_path; | |
1287 | char *env; | |
1288 | dont_repeat (); | |
1289 | env = get_in_environ (inferior_environ, path_var_name); | |
1290 | /* Can be null if path is not set */ | |
1291 | if (!env) | |
1292 | env = ""; | |
1293 | exec_path = strsave (env); | |
1294 | mod_path (dirname, &exec_path); | |
1295 | set_in_environ (inferior_environ, path_var_name, exec_path); | |
1296 | free (exec_path); | |
1297 | if (from_tty) | |
c5aa993b | 1298 | path_info ((char *) NULL, from_tty); |
c906108c | 1299 | } |
c906108c | 1300 | \f |
c5aa993b | 1301 | |
c906108c SS |
1302 | #ifdef REGISTER_NAMES |
1303 | char *gdb_register_names[] = REGISTER_NAMES; | |
1304 | #endif | |
1305 | /* Print out the machine register regnum. If regnum is -1, | |
1306 | print all registers (fpregs == 1) or all non-float registers | |
1307 | (fpregs == 0). | |
1308 | ||
1309 | For most machines, having all_registers_info() print the | |
1310 | register(s) one per line is good enough. If a different format | |
1311 | is required, (eg, for MIPS or Pyramid 90x, which both have | |
1312 | lots of regs), or there is an existing convention for showing | |
1313 | all the registers, define the macro DO_REGISTERS_INFO(regnum, fp) | |
c5aa993b | 1314 | to provide that format. */ |
c906108c SS |
1315 | |
1316 | #if !defined (DO_REGISTERS_INFO) | |
1317 | ||
1318 | #define DO_REGISTERS_INFO(regnum, fp) do_registers_info(regnum, fp) | |
1319 | ||
1320 | static void | |
1321 | do_registers_info (regnum, fpregs) | |
1322 | int regnum; | |
1323 | int fpregs; | |
1324 | { | |
1325 | register int i; | |
1326 | int numregs = ARCH_NUM_REGS; | |
1327 | ||
1328 | for (i = 0; i < numregs; i++) | |
1329 | { | |
1330 | char raw_buffer[MAX_REGISTER_RAW_SIZE]; | |
1331 | char virtual_buffer[MAX_REGISTER_VIRTUAL_SIZE]; | |
1332 | ||
1333 | /* Decide between printing all regs, nonfloat regs, or specific reg. */ | |
c5aa993b JM |
1334 | if (regnum == -1) |
1335 | { | |
1336 | if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT && !fpregs) | |
1337 | continue; | |
1338 | } | |
1339 | else | |
1340 | { | |
1341 | if (i != regnum) | |
1342 | continue; | |
1343 | } | |
c906108c SS |
1344 | |
1345 | /* If the register name is empty, it is undefined for this | |
c5aa993b | 1346 | processor, so don't display anything. */ |
c906108c SS |
1347 | if (REGISTER_NAME (i) == NULL || *(REGISTER_NAME (i)) == '\0') |
1348 | continue; | |
1349 | ||
1350 | fputs_filtered (REGISTER_NAME (i), gdb_stdout); | |
1351 | print_spaces_filtered (15 - strlen (REGISTER_NAME (i)), gdb_stdout); | |
1352 | ||
1353 | /* Get the data in raw format. */ | |
1354 | if (read_relative_register_raw_bytes (i, raw_buffer)) | |
1355 | { | |
1356 | printf_filtered ("*value not available*\n"); | |
1357 | continue; | |
1358 | } | |
1359 | ||
1360 | /* Convert raw data to virtual format if necessary. */ | |
c906108c SS |
1361 | if (REGISTER_CONVERTIBLE (i)) |
1362 | { | |
1363 | REGISTER_CONVERT_TO_VIRTUAL (i, REGISTER_VIRTUAL_TYPE (i), | |
1364 | raw_buffer, virtual_buffer); | |
1365 | } | |
1366 | else | |
392a587b JM |
1367 | { |
1368 | memcpy (virtual_buffer, raw_buffer, | |
1369 | REGISTER_VIRTUAL_SIZE (i)); | |
1370 | } | |
c906108c SS |
1371 | |
1372 | /* If virtual format is floating, print it that way, and in raw hex. */ | |
1373 | if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT) | |
1374 | { | |
1375 | register int j; | |
1376 | ||
1377 | #ifdef INVALID_FLOAT | |
1378 | if (INVALID_FLOAT (virtual_buffer, REGISTER_VIRTUAL_SIZE (i))) | |
1379 | printf_filtered ("<invalid float>"); | |
1380 | else | |
1381 | #endif | |
1382 | val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0, | |
1383 | gdb_stdout, 0, 1, 0, Val_pretty_default); | |
1384 | ||
1385 | printf_filtered ("\t(raw 0x"); | |
1386 | for (j = 0; j < REGISTER_RAW_SIZE (i); j++) | |
1387 | { | |
1388 | register int idx = TARGET_BYTE_ORDER == BIG_ENDIAN ? j | |
c5aa993b JM |
1389 | : REGISTER_RAW_SIZE (i) - 1 - j; |
1390 | printf_filtered ("%02x", (unsigned char) raw_buffer[idx]); | |
c906108c SS |
1391 | } |
1392 | printf_filtered (")"); | |
1393 | } | |
1394 | ||
1395 | /* FIXME! val_print probably can handle all of these cases now... */ | |
1396 | ||
1397 | /* Else if virtual format is too long for printf, | |
c5aa993b | 1398 | print in hex a byte at a time. */ |
c906108c SS |
1399 | else if (REGISTER_VIRTUAL_SIZE (i) > (int) sizeof (long)) |
1400 | { | |
1401 | register int j; | |
1402 | printf_filtered ("0x"); | |
1403 | for (j = 0; j < REGISTER_VIRTUAL_SIZE (i); j++) | |
c5aa993b | 1404 | printf_filtered ("%02x", (unsigned char) virtual_buffer[j]); |
c906108c SS |
1405 | } |
1406 | /* Else print as integer in hex and in decimal. */ | |
1407 | else | |
1408 | { | |
1409 | val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0, | |
1410 | gdb_stdout, 'x', 1, 0, Val_pretty_default); | |
1411 | printf_filtered ("\t"); | |
1412 | val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0, | |
c5aa993b | 1413 | gdb_stdout, 0, 1, 0, Val_pretty_default); |
c906108c SS |
1414 | } |
1415 | ||
1416 | /* The SPARC wants to print even-numbered float regs as doubles | |
c5aa993b | 1417 | in addition to printing them as floats. */ |
c906108c SS |
1418 | #ifdef PRINT_REGISTER_HOOK |
1419 | PRINT_REGISTER_HOOK (i); | |
1420 | #endif | |
1421 | ||
1422 | printf_filtered ("\n"); | |
1423 | } | |
1424 | } | |
1425 | #endif /* no DO_REGISTERS_INFO. */ | |
1426 | ||
c906108c SS |
1427 | void |
1428 | registers_info (addr_exp, fpregs) | |
1429 | char *addr_exp; | |
1430 | int fpregs; | |
1431 | { | |
1432 | int regnum, numregs; | |
1433 | register char *end; | |
1434 | ||
1435 | if (!target_has_registers) | |
1436 | error ("The program has no registers now."); | |
1437 | if (selected_frame == NULL) | |
1438 | error ("No selected frame."); | |
1439 | ||
1440 | if (!addr_exp) | |
1441 | { | |
c5aa993b | 1442 | DO_REGISTERS_INFO (-1, fpregs); |
c906108c SS |
1443 | return; |
1444 | } | |
1445 | ||
1446 | do | |
c5aa993b | 1447 | { |
c906108c SS |
1448 | if (addr_exp[0] == '$') |
1449 | addr_exp++; | |
1450 | end = addr_exp; | |
1451 | while (*end != '\0' && *end != ' ' && *end != '\t') | |
1452 | ++end; | |
1453 | numregs = ARCH_NUM_REGS; | |
1454 | ||
1455 | regnum = target_map_name_to_register (addr_exp, end - addr_exp); | |
c5aa993b | 1456 | if (regnum >= 0) |
c906108c SS |
1457 | goto found; |
1458 | ||
1459 | regnum = numregs; | |
1460 | ||
1461 | if (*addr_exp >= '0' && *addr_exp <= '9') | |
c5aa993b JM |
1462 | regnum = atoi (addr_exp); /* Take a number */ |
1463 | if (regnum >= numregs) /* Bad name, or bad number */ | |
c906108c SS |
1464 | error ("%.*s: invalid register", end - addr_exp, addr_exp); |
1465 | ||
c5aa993b JM |
1466 | found: |
1467 | DO_REGISTERS_INFO (regnum, fpregs); | |
c906108c SS |
1468 | |
1469 | addr_exp = end; | |
1470 | while (*addr_exp == ' ' || *addr_exp == '\t') | |
1471 | ++addr_exp; | |
c5aa993b JM |
1472 | } |
1473 | while (*addr_exp != '\0'); | |
c906108c SS |
1474 | } |
1475 | ||
1476 | void | |
1477 | all_registers_info (addr_exp, from_tty) | |
1478 | char *addr_exp; | |
1479 | int from_tty; | |
1480 | { | |
1481 | registers_info (addr_exp, 1); | |
1482 | } | |
1483 | ||
1484 | void | |
1485 | nofp_registers_info (addr_exp, from_tty) | |
1486 | char *addr_exp; | |
1487 | int from_tty; | |
1488 | { | |
1489 | registers_info (addr_exp, 0); | |
1490 | } | |
c906108c | 1491 | \f |
c5aa993b | 1492 | |
c906108c SS |
1493 | /* |
1494 | * TODO: | |
1495 | * Should save/restore the tty state since it might be that the | |
1496 | * program to be debugged was started on this tty and it wants | |
1497 | * the tty in some state other than what we want. If it's running | |
1498 | * on another terminal or without a terminal, then saving and | |
1499 | * restoring the tty state is a harmless no-op. | |
1500 | * This only needs to be done if we are attaching to a process. | |
1501 | */ | |
1502 | ||
1503 | /* | |
1504 | attach_command -- | |
1505 | takes a program started up outside of gdb and ``attaches'' to it. | |
1506 | This stops it cold in its tracks and allows us to start debugging it. | |
1507 | and wait for the trace-trap that results from attaching. */ | |
1508 | ||
1509 | void | |
1510 | attach_command (args, from_tty) | |
1511 | char *args; | |
1512 | int from_tty; | |
1513 | { | |
1514 | #ifdef SOLIB_ADD | |
1515 | extern int auto_solib_add; | |
1516 | #endif | |
1517 | ||
c5aa993b JM |
1518 | char *exec_file; |
1519 | char *full_exec_path = NULL; | |
c906108c | 1520 | |
c5aa993b | 1521 | dont_repeat (); /* Not for the faint of heart */ |
c906108c SS |
1522 | |
1523 | if (target_has_execution) | |
1524 | { | |
1525 | if (query ("A program is being debugged already. Kill it? ")) | |
1526 | target_kill (); | |
1527 | else | |
1528 | error ("Not killed."); | |
1529 | } | |
1530 | ||
1531 | target_attach (args, from_tty); | |
1532 | ||
1533 | /* Set up the "saved terminal modes" of the inferior | |
1534 | based on what modes we are starting it with. */ | |
1535 | target_terminal_init (); | |
1536 | ||
1537 | /* Install inferior's terminal modes. */ | |
1538 | target_terminal_inferior (); | |
1539 | ||
1540 | /* Set up execution context to know that we should return from | |
1541 | wait_for_inferior as soon as the target reports a stop. */ | |
1542 | init_wait_for_inferior (); | |
1543 | clear_proceed_status (); | |
1544 | stop_soon_quietly = 1; | |
1545 | ||
1546 | /* No traps are generated when attaching to inferior under Mach 3 | |
1547 | or GNU hurd. */ | |
1548 | #ifndef ATTACH_NO_WAIT | |
1549 | wait_for_inferior (); | |
1550 | #endif | |
1551 | ||
1552 | /* | |
1553 | * If no exec file is yet known, try to determine it from the | |
1554 | * process itself. | |
1555 | */ | |
1556 | exec_file = (char *) get_exec_file (0); | |
c5aa993b JM |
1557 | if (!exec_file) |
1558 | { | |
1559 | exec_file = target_pid_to_exec_file (inferior_pid); | |
1560 | if (exec_file) | |
1561 | { | |
1562 | /* It's possible we don't have a full path, but rather just a | |
1563 | filename. Some targets, such as HP-UX, don't provide the | |
1564 | full path, sigh. | |
1565 | ||
1566 | Attempt to qualify the filename against the source path. | |
1567 | (If that fails, we'll just fall back on the original | |
1568 | filename. Not much more we can do...) | |
1569 | */ | |
1570 | if (!source_full_path_of (exec_file, &full_exec_path)) | |
1571 | full_exec_path = savestring (exec_file, strlen (exec_file)); | |
1572 | ||
1573 | exec_file_attach (full_exec_path, from_tty); | |
1574 | symbol_file_command (full_exec_path, from_tty); | |
1575 | } | |
c906108c | 1576 | } |
c906108c SS |
1577 | |
1578 | #ifdef SOLIB_ADD | |
1579 | if (auto_solib_add) | |
1580 | { | |
1581 | /* Add shared library symbols from the newly attached process, if any. */ | |
c5aa993b | 1582 | SOLIB_ADD ((char *) 0, from_tty, ¤t_target); |
c906108c SS |
1583 | re_enable_breakpoints_in_shlibs (); |
1584 | } | |
1585 | #endif | |
1586 | ||
1587 | /* Take any necessary post-attaching actions for this platform. | |
c5aa993b | 1588 | */ |
c906108c SS |
1589 | target_post_attach (inferior_pid); |
1590 | ||
1591 | normal_stop (); | |
1592 | } | |
1593 | ||
1594 | /* | |
1595 | * detach_command -- | |
1596 | * takes a program previously attached to and detaches it. | |
1597 | * The program resumes execution and will no longer stop | |
1598 | * on signals, etc. We better not have left any breakpoints | |
1599 | * in the program or it'll die when it hits one. For this | |
1600 | * to work, it may be necessary for the process to have been | |
1601 | * previously attached. It *might* work if the program was | |
1602 | * started via the normal ptrace (PTRACE_TRACEME). | |
1603 | */ | |
1604 | ||
1605 | static void | |
1606 | detach_command (args, from_tty) | |
1607 | char *args; | |
1608 | int from_tty; | |
1609 | { | |
c5aa993b | 1610 | dont_repeat (); /* Not for the faint of heart */ |
c906108c SS |
1611 | target_detach (args, from_tty); |
1612 | #if defined(SOLIB_RESTART) | |
1613 | SOLIB_RESTART (); | |
1614 | #endif | |
1615 | } | |
1616 | ||
43ff13b4 JM |
1617 | /* Stop the execution of the target while running in async mode, in |
1618 | the backgound. */ | |
1619 | static void | |
1620 | interrupt_target_command (args, from_tty) | |
1621 | char *args; | |
1622 | int from_tty; | |
1623 | { | |
1624 | if (async_p && target_has_async) | |
1625 | { | |
c5aa993b | 1626 | dont_repeat (); /* Not for the faint of heart */ |
43ff13b4 JM |
1627 | target_stop (); |
1628 | } | |
1629 | } | |
1630 | ||
c906108c SS |
1631 | /* ARGSUSED */ |
1632 | static void | |
1633 | float_info (addr_exp, from_tty) | |
1634 | char *addr_exp; | |
1635 | int from_tty; | |
1636 | { | |
1637 | #ifdef FLOAT_INFO | |
1638 | FLOAT_INFO; | |
1639 | #else | |
1640 | printf_filtered ("No floating point info available for this processor.\n"); | |
1641 | #endif | |
1642 | } | |
1643 | \f | |
1644 | /* ARGSUSED */ | |
1645 | static void | |
1646 | unset_command (args, from_tty) | |
1647 | char *args; | |
1648 | int from_tty; | |
1649 | { | |
1650 | printf_filtered ("\"unset\" must be followed by the name of "); | |
1651 | printf_filtered ("an unset subcommand.\n"); | |
1652 | help_list (unsetlist, "unset ", -1, gdb_stdout); | |
1653 | } | |
1654 | ||
1655 | void | |
1656 | _initialize_infcmd () | |
1657 | { | |
1658 | struct cmd_list_element *c; | |
c5aa993b | 1659 | |
c906108c SS |
1660 | add_com ("tty", class_run, tty_command, |
1661 | "Set terminal for future runs of program being debugged."); | |
1662 | ||
1663 | add_show_from_set | |
c5aa993b JM |
1664 | (add_set_cmd ("args", class_run, var_string_noescape, |
1665 | (char *) &inferior_args, | |
1666 | "Set argument list to give program being debugged when it is started.\n\ | |
c906108c SS |
1667 | Follow this command with any number of args, to be passed to the program.", |
1668 | &setlist), | |
1669 | &showlist); | |
1670 | ||
1671 | c = add_cmd | |
1672 | ("environment", no_class, environment_info, | |
1673 | "The environment to give the program, or one variable's value.\n\ | |
1674 | With an argument VAR, prints the value of environment variable VAR to\n\ | |
1675 | give the program being debugged. With no arguments, prints the entire\n\ | |
1676 | environment to be given to the program.", &showlist); | |
1677 | c->completer = noop_completer; | |
1678 | ||
1679 | add_prefix_cmd ("unset", no_class, unset_command, | |
1680 | "Complement to certain \"set\" commands", | |
1681 | &unsetlist, "unset ", 0, &cmdlist); | |
c5aa993b | 1682 | |
c906108c | 1683 | c = add_cmd ("environment", class_run, unset_environment_command, |
c5aa993b | 1684 | "Cancel environment variable VAR for the program.\n\ |
c906108c | 1685 | This does not affect the program until the next \"run\" command.", |
c5aa993b | 1686 | &unsetlist); |
c906108c SS |
1687 | c->completer = noop_completer; |
1688 | ||
1689 | c = add_cmd ("environment", class_run, set_environment_command, | |
1690 | "Set environment variable value to give the program.\n\ | |
1691 | Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\ | |
1692 | VALUES of environment variables are uninterpreted strings.\n\ | |
1693 | This does not affect the program until the next \"run\" command.", | |
c5aa993b | 1694 | &setlist); |
c906108c | 1695 | c->completer = noop_completer; |
c5aa993b | 1696 | |
c906108c | 1697 | add_com ("path", class_files, path_command, |
c5aa993b | 1698 | "Add directory DIR(s) to beginning of search path for object files.\n\ |
c906108c SS |
1699 | $cwd in the path means the current working directory.\n\ |
1700 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
1701 | directories, separated by colons. These directories are searched to find\n\ | |
1702 | fully linked executable files and separately compiled object files as needed."); | |
1703 | ||
1704 | c = add_cmd ("paths", no_class, path_info, | |
c5aa993b | 1705 | "Current search path for finding object files.\n\ |
c906108c SS |
1706 | $cwd in the path means the current working directory.\n\ |
1707 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
1708 | directories, separated by colons. These directories are searched to find\n\ | |
1709 | fully linked executable files and separately compiled object files as needed.", | |
1710 | &showlist); | |
1711 | c->completer = noop_completer; | |
1712 | ||
c5aa993b JM |
1713 | add_com ("attach", class_run, attach_command, |
1714 | "Attach to a process or file outside of GDB.\n\ | |
c906108c SS |
1715 | This command attaches to another target, of the same type as your last\n\ |
1716 | \"target\" command (\"info files\" will show your target stack).\n\ | |
1717 | The command may take as argument a process id or a device file.\n\ | |
1718 | For a process id, you must have permission to send the process a signal,\n\ | |
1719 | and it must have the same effective uid as the debugger.\n\ | |
1720 | When using \"attach\" with a process id, the debugger finds the\n\ | |
1721 | program running in the process, looking first in the current working\n\ | |
1722 | directory, or (if not found there) using the source file search path\n\ | |
1723 | (see the \"directory\" command). You can also use the \"file\" command\n\ | |
1724 | to specify the program, and to load its symbol table."); | |
1725 | ||
1726 | add_com ("detach", class_run, detach_command, | |
1727 | "Detach a process or file previously attached.\n\ | |
1728 | If a process, it is no longer traced, and it continues its execution. If\n\ | |
1729 | you were debugging a file, the file is closed and gdb no longer accesses it."); | |
1730 | ||
1731 | add_com ("signal", class_run, signal_command, | |
1732 | "Continue program giving it signal specified by the argument.\n\ | |
1733 | An argument of \"0\" means continue program without giving it a signal."); | |
1734 | ||
1735 | add_com ("stepi", class_run, stepi_command, | |
1736 | "Step one instruction exactly.\n\ | |
1737 | Argument N means do this N times (or till program stops for another reason)."); | |
1738 | add_com_alias ("si", "stepi", class_alias, 0); | |
1739 | ||
1740 | add_com ("nexti", class_run, nexti_command, | |
1741 | "Step one instruction, but proceed through subroutine calls.\n\ | |
1742 | Argument N means do this N times (or till program stops for another reason)."); | |
1743 | add_com_alias ("ni", "nexti", class_alias, 0); | |
1744 | ||
1745 | add_com ("finish", class_run, finish_command, | |
1746 | "Execute until selected stack frame returns.\n\ | |
1747 | Upon return, the value returned is printed and put in the value history."); | |
1748 | ||
1749 | add_com ("next", class_run, next_command, | |
1750 | "Step program, proceeding through subroutine calls.\n\ | |
1751 | Like the \"step\" command as long as subroutine calls do not happen;\n\ | |
1752 | when they do, the call is treated as one instruction.\n\ | |
1753 | Argument N means do this N times (or till program stops for another reason)."); | |
1754 | add_com_alias ("n", "next", class_run, 1); | |
1755 | if (xdb_commands) | |
c5aa993b | 1756 | add_com_alias ("S", "next", class_run, 1); |
c906108c SS |
1757 | |
1758 | add_com ("step", class_run, step_command, | |
1759 | "Step program until it reaches a different source line.\n\ | |
1760 | Argument N means do this N times (or till program stops for another reason)."); | |
1761 | add_com_alias ("s", "step", class_run, 1); | |
1762 | ||
1763 | add_com ("until", class_run, until_command, | |
c5aa993b | 1764 | "Execute until the program reaches a source line greater than the current\n\ |
c906108c SS |
1765 | or a specified line or address or function (same args as break command).\n\ |
1766 | Execution will also stop upon exit from the current stack frame."); | |
1767 | add_com_alias ("u", "until", class_run, 1); | |
c5aa993b | 1768 | |
c906108c SS |
1769 | add_com ("jump", class_run, jump_command, |
1770 | "Continue program being debugged at specified line or address.\n\ | |
1771 | Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\ | |
1772 | for an address to start at."); | |
1773 | ||
b83266a0 SS |
1774 | if (xdb_commands) |
1775 | add_com ("go", class_run, go_command, | |
1776 | "Usage: go <location>\n\ | |
c906108c SS |
1777 | Continue program being debugged, stopping at specified line or \n\ |
1778 | address.\n\ | |
1779 | Give as argument either LINENUM or *ADDR, where ADDR is an \n\ | |
1780 | expression for an address to start at.\n\ | |
1781 | This command is a combination of tbreak and jump."); | |
b83266a0 | 1782 | |
c906108c | 1783 | if (xdb_commands) |
c5aa993b | 1784 | add_com_alias ("g", "go", class_run, 1); |
c906108c SS |
1785 | |
1786 | add_com ("continue", class_run, continue_command, | |
1787 | "Continue program being debugged, after signal or breakpoint.\n\ | |
1788 | If proceeding from breakpoint, a number N may be used as an argument,\n\ | |
1789 | which means to set the ignore count of that breakpoint to N - 1 (so that\n\ | |
1790 | the breakpoint won't break until the Nth time it is reached)."); | |
1791 | add_com_alias ("c", "cont", class_run, 1); | |
1792 | add_com_alias ("fg", "cont", class_run, 1); | |
1793 | ||
1794 | add_com ("run", class_run, run_command, | |
1795 | "Start debugged program. You may specify arguments to give it.\n\ | |
1796 | Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\ | |
1797 | Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\ | |
1798 | With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\ | |
1799 | To cancel previous arguments and run with no arguments,\n\ | |
1800 | use \"set args\" without arguments."); | |
1801 | add_com_alias ("r", "run", class_run, 1); | |
1802 | if (xdb_commands) | |
1803 | add_com ("R", class_run, run_no_args_command, | |
c5aa993b | 1804 | "Start debugged program with no arguments."); |
c906108c | 1805 | |
43ff13b4 JM |
1806 | add_com ("interrupt", class_run, interrupt_target_command, |
1807 | "Interrupt the execution of the debugged program."); | |
1808 | ||
c906108c | 1809 | add_info ("registers", nofp_registers_info, |
c5aa993b | 1810 | "List of integer registers and their contents, for selected stack frame.\n\ |
c906108c SS |
1811 | Register name as argument means describe only that register."); |
1812 | ||
1813 | if (xdb_commands) | |
c5aa993b JM |
1814 | add_com ("lr", class_info, nofp_registers_info, |
1815 | "List of integer registers and their contents, for selected stack frame.\n\ | |
c906108c SS |
1816 | Register name as argument means describe only that register."); |
1817 | add_info ("all-registers", all_registers_info, | |
c5aa993b | 1818 | "List of all registers and their contents, for selected stack frame.\n\ |
c906108c SS |
1819 | Register name as argument means describe only that register."); |
1820 | ||
1821 | add_info ("program", program_info, | |
1822 | "Execution status of the program."); | |
1823 | ||
1824 | add_info ("float", float_info, | |
1825 | "Print the status of the floating point unit\n"); | |
1826 | ||
1827 | inferior_args = savestring ("", 1); /* Initially no args */ | |
1828 | inferior_environ = make_environ (); | |
1829 | init_environ (inferior_environ); | |
1830 | } |