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" | |
6426a772 | 37 | #include "event-top.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 | ||
11cf8741 JM |
52 | static void print_return_value (int struct_return, struct type *value_type); |
53 | ||
43ff13b4 JM |
54 | static void finish_command_continuation PARAMS ((struct continuation_arg *)); |
55 | ||
c906108c SS |
56 | static void until_next_command PARAMS ((int)); |
57 | ||
58 | static void until_command PARAMS ((char *, int)); | |
59 | ||
60 | static void path_info PARAMS ((char *, int)); | |
61 | ||
62 | static void path_command PARAMS ((char *, int)); | |
63 | ||
64 | static void unset_command PARAMS ((char *, int)); | |
65 | ||
66 | static void float_info PARAMS ((char *, int)); | |
67 | ||
68 | static void detach_command PARAMS ((char *, int)); | |
69 | ||
96baa820 JM |
70 | static void interrupt_target_command (char *args, int from_tty); |
71 | ||
c906108c SS |
72 | #if !defined (DO_REGISTERS_INFO) |
73 | static void do_registers_info PARAMS ((int, int)); | |
74 | #endif | |
75 | ||
76 | static void unset_environment_command PARAMS ((char *, int)); | |
77 | ||
78 | static void set_environment_command PARAMS ((char *, int)); | |
79 | ||
80 | static void environment_info PARAMS ((char *, int)); | |
81 | ||
82 | static void program_info PARAMS ((char *, int)); | |
83 | ||
84 | static void finish_command PARAMS ((char *, int)); | |
85 | ||
86 | static void signal_command PARAMS ((char *, int)); | |
87 | ||
88 | static void jump_command PARAMS ((char *, int)); | |
89 | ||
90 | static void step_1 PARAMS ((int, int, char *)); | |
c2d11a7d JM |
91 | static void step_once (int skip_subroutines, int single_inst, int count); |
92 | static void step_1_continuation (struct continuation_arg *arg); | |
c906108c SS |
93 | |
94 | void nexti_command PARAMS ((char *, int)); | |
95 | ||
96 | void stepi_command PARAMS ((char *, int)); | |
97 | ||
98 | static void next_command PARAMS ((char *, int)); | |
99 | ||
100 | static void step_command PARAMS ((char *, int)); | |
101 | ||
102 | static void run_command PARAMS ((char *, int)); | |
103 | ||
392a587b JM |
104 | static void run_no_args_command PARAMS ((char *args, int from_tty)); |
105 | ||
106 | static void go_command PARAMS ((char *line_no, int from_tty)); | |
107 | ||
43ff13b4 JM |
108 | static int strip_bg_char PARAMS ((char **)); |
109 | ||
c906108c SS |
110 | void _initialize_infcmd PARAMS ((void)); |
111 | ||
112 | #define GO_USAGE "Usage: go <location>\n" | |
113 | ||
c906108c | 114 | static void breakpoint_auto_delete_contents PARAMS ((PTR)); |
c906108c SS |
115 | |
116 | #define ERROR_NO_INFERIOR \ | |
117 | if (!target_has_execution) error ("The program is not being run."); | |
118 | ||
119 | /* String containing arguments to give to the program, separated by spaces. | |
120 | Empty string (pointer to '\0') means no args. */ | |
121 | ||
122 | static char *inferior_args; | |
123 | ||
124 | /* File name for default use for standard in/out in the inferior. */ | |
125 | ||
126 | char *inferior_io_terminal; | |
127 | ||
128 | /* Pid of our debugged inferior, or 0 if no inferior now. | |
129 | Since various parts of infrun.c test this to see whether there is a program | |
130 | being debugged it should be nonzero (currently 3 is used) for remote | |
131 | debugging. */ | |
132 | ||
133 | int inferior_pid; | |
134 | ||
135 | /* Last signal that the inferior received (why it stopped). */ | |
136 | ||
137 | enum target_signal stop_signal; | |
138 | ||
139 | /* Address at which inferior stopped. */ | |
140 | ||
141 | CORE_ADDR stop_pc; | |
142 | ||
143 | /* Chain containing status of breakpoint(s) that we have stopped at. */ | |
144 | ||
145 | bpstat stop_bpstat; | |
146 | ||
147 | /* Flag indicating that a command has proceeded the inferior past the | |
148 | current breakpoint. */ | |
149 | ||
150 | int breakpoint_proceeded; | |
151 | ||
152 | /* Nonzero if stopped due to a step command. */ | |
153 | ||
154 | int stop_step; | |
155 | ||
156 | /* Nonzero if stopped due to completion of a stack dummy routine. */ | |
157 | ||
158 | int stop_stack_dummy; | |
159 | ||
160 | /* Nonzero if stopped due to a random (unexpected) signal in inferior | |
161 | process. */ | |
162 | ||
163 | int stopped_by_random_signal; | |
164 | ||
165 | /* Range to single step within. | |
166 | If this is nonzero, respond to a single-step signal | |
167 | by continuing to step if the pc is in this range. */ | |
168 | ||
c5aa993b JM |
169 | CORE_ADDR step_range_start; /* Inclusive */ |
170 | CORE_ADDR step_range_end; /* Exclusive */ | |
c906108c SS |
171 | |
172 | /* Stack frame address as of when stepping command was issued. | |
173 | This is how we know when we step into a subroutine call, | |
174 | and how to set the frame for the breakpoint used to step out. */ | |
175 | ||
176 | CORE_ADDR step_frame_address; | |
177 | ||
178 | /* Our notion of the current stack pointer. */ | |
179 | ||
180 | CORE_ADDR step_sp; | |
181 | ||
182 | /* 1 means step over all subroutine calls. | |
183 | 0 means don't step over calls (used by stepi). | |
184 | -1 means step over calls to undebuggable functions. */ | |
185 | ||
186 | int step_over_calls; | |
187 | ||
188 | /* If stepping, nonzero means step count is > 1 | |
189 | so don't print frame next time inferior stops | |
190 | if it stops due to stepping. */ | |
191 | ||
192 | int step_multi; | |
193 | ||
194 | /* Environment to use for running inferior, | |
195 | in format described in environ.h. */ | |
196 | ||
197 | struct environ *inferior_environ; | |
c906108c | 198 | \f |
c5aa993b | 199 | |
43ff13b4 JM |
200 | /* This function detects whether or not a '&' character (indicating |
201 | background execution) has been added as *the last* of the arguments ARGS | |
202 | of a command. If it has, it removes it and returns 1. Otherwise it | |
203 | does nothing and returns 0. */ | |
c5aa993b | 204 | static int |
43ff13b4 JM |
205 | strip_bg_char (args) |
206 | char **args; | |
207 | { | |
208 | char *p = NULL; | |
c5aa993b | 209 | |
9846de1b | 210 | p = strchr (*args, '&'); |
c5aa993b | 211 | |
9846de1b | 212 | if (p) |
43ff13b4 JM |
213 | { |
214 | if (p == (*args + strlen (*args) - 1)) | |
215 | { | |
c5aa993b | 216 | if (strlen (*args) > 1) |
43ff13b4 JM |
217 | { |
218 | do | |
219 | p--; | |
220 | while (*p == ' ' || *p == '\t'); | |
221 | *(p + 1) = '\0'; | |
222 | } | |
223 | else | |
224 | *args = 0; | |
225 | return 1; | |
226 | } | |
227 | } | |
228 | return 0; | |
229 | } | |
230 | ||
c906108c SS |
231 | /* ARGSUSED */ |
232 | void | |
233 | tty_command (file, from_tty) | |
234 | char *file; | |
235 | int from_tty; | |
236 | { | |
237 | if (file == 0) | |
238 | error_no_arg ("terminal name for running target process"); | |
239 | ||
240 | inferior_io_terminal = savestring (file, strlen (file)); | |
241 | } | |
242 | ||
243 | static void | |
244 | run_command (args, from_tty) | |
245 | char *args; | |
246 | int from_tty; | |
247 | { | |
248 | char *exec_file; | |
249 | ||
250 | dont_repeat (); | |
251 | ||
252 | if (inferior_pid != 0 && target_has_execution) | |
253 | { | |
adf40b2e JM |
254 | if (from_tty |
255 | && !query ("The program being debugged has been started already.\n\ | |
c906108c SS |
256 | Start it from the beginning? ")) |
257 | error ("Program not restarted."); | |
258 | target_kill (); | |
259 | #if defined(SOLIB_RESTART) | |
260 | SOLIB_RESTART (); | |
261 | #endif | |
262 | init_wait_for_inferior (); | |
263 | } | |
264 | ||
265 | clear_breakpoint_hit_counts (); | |
266 | ||
267 | exec_file = (char *) get_exec_file (0); | |
268 | ||
269 | /* Purge old solib objfiles. */ | |
270 | objfile_purge_solibs (); | |
271 | ||
272 | do_run_cleanups (NULL); | |
273 | ||
274 | /* The exec file is re-read every time we do a generic_mourn_inferior, so | |
275 | we just have to worry about the symbol file. */ | |
276 | reread_symbols (); | |
277 | ||
278 | /* We keep symbols from add-symbol-file, on the grounds that the | |
279 | user might want to add some symbols before running the program | |
280 | (right?). But sometimes (dynamic loading where the user manually | |
281 | introduces the new symbols with add-symbol-file), the code which | |
282 | the symbols describe does not persist between runs. Currently | |
283 | the user has to manually nuke all symbols between runs if they | |
284 | want them to go away (PR 2207). This is probably reasonable. */ | |
285 | ||
43ff13b4 | 286 | if (!args) |
6426a772 JM |
287 | { |
288 | if (event_loop_p && target_can_async_p ()) | |
289 | async_disable_stdin (); | |
290 | } | |
43ff13b4 | 291 | else |
c906108c SS |
292 | { |
293 | char *cmd; | |
43ff13b4 JM |
294 | int async_exec = strip_bg_char (&args); |
295 | ||
296 | /* If we get a request for running in the bg but the target | |
297 | doesn't support it, error out. */ | |
6426a772 | 298 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
299 | error ("Asynchronous execution not supported on this target."); |
300 | ||
301 | /* If we don't get a request of running in the bg, then we need | |
c5aa993b | 302 | to simulate synchronous (fg) execution. */ |
6426a772 | 303 | if (event_loop_p && !async_exec && target_can_async_p ()) |
43ff13b4 JM |
304 | { |
305 | /* Simulate synchronous execution */ | |
6426a772 | 306 | async_disable_stdin (); |
43ff13b4 JM |
307 | } |
308 | ||
309 | /* If there were other args, beside '&', process them. */ | |
310 | if (args) | |
311 | { | |
312 | cmd = concat ("set args ", args, NULL); | |
313 | make_cleanup (free, cmd); | |
314 | execute_command (cmd, from_tty); | |
315 | } | |
c906108c SS |
316 | } |
317 | ||
318 | if (from_tty) | |
319 | { | |
c5aa993b | 320 | puts_filtered ("Starting program: "); |
c906108c | 321 | if (exec_file) |
c5aa993b JM |
322 | puts_filtered (exec_file); |
323 | puts_filtered (" "); | |
324 | puts_filtered (inferior_args); | |
325 | puts_filtered ("\n"); | |
c906108c SS |
326 | gdb_flush (gdb_stdout); |
327 | } | |
328 | ||
329 | target_create_inferior (exec_file, inferior_args, | |
330 | environ_vector (inferior_environ)); | |
331 | } | |
332 | ||
333 | ||
334 | static void | |
335 | run_no_args_command (args, from_tty) | |
336 | char *args; | |
337 | int from_tty; | |
338 | { | |
c5aa993b JM |
339 | execute_command ("set args", from_tty); |
340 | run_command ((char *) NULL, from_tty); | |
c906108c | 341 | } |
c906108c | 342 | \f |
c5aa993b | 343 | |
c906108c SS |
344 | void |
345 | continue_command (proc_count_exp, from_tty) | |
346 | char *proc_count_exp; | |
347 | int from_tty; | |
348 | { | |
c5aa993b | 349 | int async_exec = 0; |
c906108c SS |
350 | ERROR_NO_INFERIOR; |
351 | ||
43ff13b4 JM |
352 | /* Find out whether we must run in the background. */ |
353 | if (proc_count_exp != NULL) | |
354 | async_exec = strip_bg_char (&proc_count_exp); | |
355 | ||
356 | /* If we must run in the background, but the target can't do it, | |
357 | error out. */ | |
6426a772 | 358 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
359 | error ("Asynchronous execution not supported on this target."); |
360 | ||
361 | /* If we are not asked to run in the bg, then prepare to run in the | |
362 | foreground, synchronously. */ | |
6426a772 | 363 | if (event_loop_p && !async_exec && target_can_async_p ()) |
c5aa993b | 364 | { |
43ff13b4 | 365 | /* Simulate synchronous execution */ |
6426a772 | 366 | async_disable_stdin (); |
43ff13b4 | 367 | } |
c906108c | 368 | |
43ff13b4 JM |
369 | /* If have argument (besides '&'), set proceed count of breakpoint |
370 | we stopped at. */ | |
c906108c SS |
371 | if (proc_count_exp != NULL) |
372 | { | |
373 | bpstat bs = stop_bpstat; | |
374 | int num = bpstat_num (&bs); | |
375 | if (num == 0 && from_tty) | |
376 | { | |
377 | printf_filtered | |
378 | ("Not stopped at any breakpoint; argument ignored.\n"); | |
379 | } | |
380 | while (num != 0) | |
381 | { | |
382 | set_ignore_count (num, | |
383 | parse_and_eval_address (proc_count_exp) - 1, | |
384 | from_tty); | |
385 | /* set_ignore_count prints a message ending with a period. | |
386 | So print two spaces before "Continuing.". */ | |
387 | if (from_tty) | |
388 | printf_filtered (" "); | |
389 | num = bpstat_num (&bs); | |
390 | } | |
391 | } | |
392 | ||
393 | if (from_tty) | |
394 | printf_filtered ("Continuing.\n"); | |
395 | ||
396 | clear_proceed_status (); | |
397 | ||
2acceee2 | 398 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); |
c906108c SS |
399 | } |
400 | \f | |
401 | /* Step until outside of current statement. */ | |
402 | ||
403 | /* ARGSUSED */ | |
404 | static void | |
405 | step_command (count_string, from_tty) | |
406 | char *count_string; | |
407 | int from_tty; | |
408 | { | |
409 | step_1 (0, 0, count_string); | |
410 | } | |
411 | ||
412 | /* Likewise, but skip over subroutine calls as if single instructions. */ | |
413 | ||
414 | /* ARGSUSED */ | |
415 | static void | |
416 | next_command (count_string, from_tty) | |
417 | char *count_string; | |
418 | int from_tty; | |
419 | { | |
420 | step_1 (1, 0, count_string); | |
421 | } | |
422 | ||
423 | /* Likewise, but step only one instruction. */ | |
424 | ||
425 | /* ARGSUSED */ | |
426 | void | |
427 | stepi_command (count_string, from_tty) | |
428 | char *count_string; | |
429 | int from_tty; | |
430 | { | |
431 | step_1 (0, 1, count_string); | |
432 | } | |
433 | ||
434 | /* ARGSUSED */ | |
435 | void | |
436 | nexti_command (count_string, from_tty) | |
437 | char *count_string; | |
438 | int from_tty; | |
439 | { | |
440 | step_1 (1, 1, count_string); | |
441 | } | |
442 | ||
443 | static void | |
444 | step_1 (skip_subroutines, single_inst, count_string) | |
445 | int skip_subroutines; | |
446 | int single_inst; | |
447 | char *count_string; | |
448 | { | |
449 | register int count = 1; | |
450 | struct frame_info *frame; | |
451 | struct cleanup *cleanups = 0; | |
43ff13b4 | 452 | int async_exec = 0; |
c5aa993b | 453 | |
c906108c | 454 | ERROR_NO_INFERIOR; |
43ff13b4 JM |
455 | |
456 | if (count_string) | |
457 | async_exec = strip_bg_char (&count_string); | |
c5aa993b | 458 | |
43ff13b4 JM |
459 | /* If we get a request for running in the bg but the target |
460 | doesn't support it, error out. */ | |
6426a772 | 461 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
462 | error ("Asynchronous execution not supported on this target."); |
463 | ||
464 | /* If we don't get a request of running in the bg, then we need | |
465 | to simulate synchronous (fg) execution. */ | |
6426a772 | 466 | if (event_loop_p && !async_exec && target_can_async_p ()) |
43ff13b4 JM |
467 | { |
468 | /* Simulate synchronous execution */ | |
6426a772 | 469 | async_disable_stdin (); |
43ff13b4 JM |
470 | } |
471 | ||
c906108c SS |
472 | count = count_string ? parse_and_eval_address (count_string) : 1; |
473 | ||
c5aa993b | 474 | if (!single_inst || skip_subroutines) /* leave si command alone */ |
c906108c | 475 | { |
c5aa993b | 476 | enable_longjmp_breakpoint (); |
c2d11a7d JM |
477 | if (!event_loop_p || !target_can_async_p ()) |
478 | cleanups = make_cleanup ((make_cleanup_func) disable_longjmp_breakpoint, | |
479 | 0); | |
480 | else | |
0d06e24b | 481 | make_exec_cleanup ((make_cleanup_func) disable_longjmp_breakpoint, 0); |
c2d11a7d JM |
482 | } |
483 | ||
484 | /* In synchronous case, all is well, just use the regular for loop. */ | |
485 | if (!event_loop_p || !target_can_async_p ()) | |
486 | { | |
487 | for (; count > 0; count--) | |
488 | { | |
489 | clear_proceed_status (); | |
490 | ||
491 | frame = get_current_frame (); | |
492 | if (!frame) /* Avoid coredump here. Why tho? */ | |
493 | error ("No current frame"); | |
494 | step_frame_address = FRAME_FP (frame); | |
495 | step_sp = read_sp (); | |
496 | ||
497 | if (!single_inst) | |
498 | { | |
499 | find_pc_line_pc_range (stop_pc, &step_range_start, &step_range_end); | |
500 | if (step_range_end == 0) | |
501 | { | |
502 | char *name; | |
503 | if (find_pc_partial_function (stop_pc, &name, &step_range_start, | |
504 | &step_range_end) == 0) | |
505 | error ("Cannot find bounds of current function"); | |
506 | ||
507 | target_terminal_ours (); | |
508 | printf_filtered ("\ | |
509 | Single stepping until exit from function %s, \n\ | |
510 | which has no line number information.\n", name); | |
511 | } | |
512 | } | |
513 | else | |
514 | { | |
515 | /* Say we are stepping, but stop after one insn whatever it does. */ | |
516 | step_range_start = step_range_end = 1; | |
517 | if (!skip_subroutines) | |
518 | /* It is stepi. | |
519 | Don't step over function calls, not even to functions lacking | |
520 | line numbers. */ | |
521 | step_over_calls = 0; | |
522 | } | |
523 | ||
524 | if (skip_subroutines) | |
525 | step_over_calls = 1; | |
526 | ||
527 | step_multi = (count > 1); | |
528 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); | |
529 | ||
530 | if (!stop_step) | |
531 | break; | |
532 | ||
533 | /* FIXME: On nexti, this may have already been done (when we hit the | |
534 | step resume break, I think). Probably this should be moved to | |
535 | wait_for_inferior (near the top). */ | |
536 | #if defined (SHIFT_INST_REGS) | |
537 | SHIFT_INST_REGS (); | |
538 | #endif | |
539 | } | |
540 | ||
541 | if (!single_inst || skip_subroutines) | |
542 | do_cleanups (cleanups); | |
543 | return; | |
544 | } | |
545 | /* In case of asynchronous target things get complicated, do only | |
546 | one step for now, before returning control to the event loop. Let | |
547 | the continuation figure out how many other steps we need to do, | |
548 | and handle them one at the time, through step_once(). */ | |
549 | else | |
550 | { | |
551 | if (event_loop_p && target_can_async_p ()) | |
552 | step_once (skip_subroutines, single_inst, count); | |
c906108c | 553 | } |
c2d11a7d | 554 | } |
c906108c | 555 | |
c2d11a7d JM |
556 | /* Called after we are done with one step operation, to check whether |
557 | we need to step again, before we print the prompt and return control | |
558 | to the user. If count is > 1, we will need to do one more call to | |
559 | proceed(), via step_once(). Basically it is like step_once and | |
560 | step_1_continuation are co-recursive. */ | |
561 | static void | |
562 | step_1_continuation (arg) | |
563 | struct continuation_arg *arg; | |
564 | { | |
565 | int count; | |
566 | int skip_subroutines; | |
567 | int single_inst; | |
568 | ||
569 | skip_subroutines = (int) arg->data; | |
570 | single_inst = (int) (arg->next)->data; | |
571 | count = (int) ((arg->next)->next)->data; | |
572 | ||
573 | if (stop_step) | |
574 | { | |
575 | /* FIXME: On nexti, this may have already been done (when we hit the | |
576 | step resume break, I think). Probably this should be moved to | |
577 | wait_for_inferior (near the top). */ | |
578 | #if defined (SHIFT_INST_REGS) | |
579 | SHIFT_INST_REGS (); | |
580 | #endif | |
581 | step_once (skip_subroutines, single_inst, count - 1); | |
582 | } | |
583 | else | |
584 | if (!single_inst || skip_subroutines) | |
585 | do_exec_cleanups (ALL_CLEANUPS); | |
586 | } | |
587 | ||
588 | /* Do just one step operation. If count >1 we will have to set up a | |
589 | continuation to be done after the target stops (after this one | |
590 | step). This is useful to implement the 'step n' kind of commands, in | |
591 | case of asynchronous targets. We had to split step_1 into two parts, | |
592 | one to be done before proceed() and one afterwards. This function is | |
593 | called in case of step n with n>1, after the first step operation has | |
594 | been completed.*/ | |
595 | static void | |
0d06e24b | 596 | step_once (int skip_subroutines, int single_inst, int count) |
c2d11a7d | 597 | { |
0d06e24b JM |
598 | struct continuation_arg *arg1; |
599 | struct continuation_arg *arg2; | |
600 | struct continuation_arg *arg3; | |
601 | struct frame_info *frame; | |
c2d11a7d JM |
602 | |
603 | if (count > 0) | |
c906108c SS |
604 | { |
605 | clear_proceed_status (); | |
606 | ||
607 | frame = get_current_frame (); | |
c5aa993b | 608 | if (!frame) /* Avoid coredump here. Why tho? */ |
c906108c SS |
609 | error ("No current frame"); |
610 | step_frame_address = FRAME_FP (frame); | |
611 | step_sp = read_sp (); | |
612 | ||
c5aa993b | 613 | if (!single_inst) |
c906108c SS |
614 | { |
615 | find_pc_line_pc_range (stop_pc, &step_range_start, &step_range_end); | |
616 | if (step_range_end == 0) | |
617 | { | |
618 | char *name; | |
619 | if (find_pc_partial_function (stop_pc, &name, &step_range_start, | |
620 | &step_range_end) == 0) | |
621 | error ("Cannot find bounds of current function"); | |
622 | ||
623 | target_terminal_ours (); | |
624 | printf_filtered ("\ | |
625 | Single stepping until exit from function %s, \n\ | |
626 | which has no line number information.\n", name); | |
627 | } | |
628 | } | |
629 | else | |
630 | { | |
631 | /* Say we are stepping, but stop after one insn whatever it does. */ | |
632 | step_range_start = step_range_end = 1; | |
633 | if (!skip_subroutines) | |
634 | /* It is stepi. | |
635 | Don't step over function calls, not even to functions lacking | |
636 | line numbers. */ | |
637 | step_over_calls = 0; | |
638 | } | |
639 | ||
640 | if (skip_subroutines) | |
641 | step_over_calls = 1; | |
642 | ||
643 | step_multi = (count > 1); | |
c2d11a7d JM |
644 | arg1 = |
645 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
646 | arg2 = | |
647 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
648 | arg3 = | |
649 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
650 | arg1->next = arg2; | |
651 | arg1->data = (PTR) skip_subroutines; | |
652 | arg2->next = arg3; | |
653 | arg2->data = (PTR) single_inst; | |
654 | arg3->next = NULL; | |
655 | arg3->data = (PTR) count; | |
656 | add_intermediate_continuation (step_1_continuation, arg1); | |
2acceee2 | 657 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); |
c906108c | 658 | } |
c906108c | 659 | } |
c2d11a7d | 660 | |
c906108c SS |
661 | \f |
662 | /* Continue program at specified address. */ | |
663 | ||
664 | static void | |
665 | jump_command (arg, from_tty) | |
666 | char *arg; | |
667 | int from_tty; | |
668 | { | |
669 | register CORE_ADDR addr; | |
670 | struct symtabs_and_lines sals; | |
671 | struct symtab_and_line sal; | |
672 | struct symbol *fn; | |
673 | struct symbol *sfn; | |
43ff13b4 | 674 | int async_exec = 0; |
c5aa993b | 675 | |
c906108c SS |
676 | ERROR_NO_INFERIOR; |
677 | ||
43ff13b4 JM |
678 | /* Find out whether we must run in the background. */ |
679 | if (arg != NULL) | |
680 | async_exec = strip_bg_char (&arg); | |
681 | ||
682 | /* If we must run in the background, but the target can't do it, | |
683 | error out. */ | |
6426a772 | 684 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
685 | error ("Asynchronous execution not supported on this target."); |
686 | ||
687 | /* If we are not asked to run in the bg, then prepare to run in the | |
688 | foreground, synchronously. */ | |
6426a772 | 689 | if (event_loop_p && !async_exec && target_can_async_p ()) |
c5aa993b | 690 | { |
43ff13b4 | 691 | /* Simulate synchronous execution */ |
6426a772 | 692 | async_disable_stdin (); |
43ff13b4 JM |
693 | } |
694 | ||
c906108c SS |
695 | if (!arg) |
696 | error_no_arg ("starting address"); | |
697 | ||
698 | sals = decode_line_spec_1 (arg, 1); | |
699 | if (sals.nelts != 1) | |
700 | { | |
701 | error ("Unreasonable jump request"); | |
702 | } | |
703 | ||
704 | sal = sals.sals[0]; | |
c5aa993b | 705 | free ((PTR) sals.sals); |
c906108c SS |
706 | |
707 | if (sal.symtab == 0 && sal.pc == 0) | |
708 | error ("No source file has been specified."); | |
709 | ||
c5aa993b | 710 | resolve_sal_pc (&sal); /* May error out */ |
c906108c SS |
711 | |
712 | /* See if we are trying to jump to another function. */ | |
713 | fn = get_frame_function (get_current_frame ()); | |
714 | sfn = find_pc_function (sal.pc); | |
715 | if (fn != NULL && sfn != fn) | |
716 | { | |
717 | if (!query ("Line %d is not in `%s'. Jump anyway? ", sal.line, | |
718 | SYMBOL_SOURCE_NAME (fn))) | |
719 | { | |
720 | error ("Not confirmed."); | |
721 | /* NOTREACHED */ | |
722 | } | |
723 | } | |
724 | ||
c5aa993b | 725 | if (sfn != NULL) |
c906108c SS |
726 | { |
727 | fixup_symbol_section (sfn, 0); | |
c5aa993b | 728 | if (section_is_overlay (SYMBOL_BFD_SECTION (sfn)) && |
c906108c SS |
729 | !section_is_mapped (SYMBOL_BFD_SECTION (sfn))) |
730 | { | |
731 | if (!query ("WARNING!!! Destination is in unmapped overlay! Jump anyway? ")) | |
732 | { | |
733 | error ("Not confirmed."); | |
734 | /* NOTREACHED */ | |
735 | } | |
736 | } | |
737 | } | |
738 | ||
c906108c SS |
739 | addr = sal.pc; |
740 | ||
741 | if (from_tty) | |
742 | { | |
743 | printf_filtered ("Continuing at "); | |
744 | print_address_numeric (addr, 1, gdb_stdout); | |
745 | printf_filtered (".\n"); | |
746 | } | |
747 | ||
748 | clear_proceed_status (); | |
749 | proceed (addr, TARGET_SIGNAL_0, 0); | |
750 | } | |
c906108c | 751 | \f |
c5aa993b | 752 | |
c906108c SS |
753 | /* Go to line or address in current procedure */ |
754 | static void | |
b83266a0 | 755 | go_command (line_no, from_tty) |
c906108c SS |
756 | char *line_no; |
757 | int from_tty; | |
758 | { | |
c5aa993b | 759 | if (line_no == (char *) NULL || !*line_no) |
b83266a0 | 760 | printf_filtered (GO_USAGE); |
c906108c SS |
761 | else |
762 | { | |
b83266a0 SS |
763 | tbreak_command (line_no, from_tty); |
764 | jump_command (line_no, from_tty); | |
c906108c SS |
765 | } |
766 | } | |
c906108c | 767 | \f |
c5aa993b | 768 | |
c906108c SS |
769 | /* Continue program giving it specified signal. */ |
770 | ||
771 | static void | |
772 | signal_command (signum_exp, from_tty) | |
773 | char *signum_exp; | |
774 | int from_tty; | |
775 | { | |
776 | enum target_signal oursig; | |
777 | ||
778 | dont_repeat (); /* Too dangerous. */ | |
779 | ERROR_NO_INFERIOR; | |
780 | ||
781 | if (!signum_exp) | |
782 | error_no_arg ("signal number"); | |
783 | ||
784 | /* It would be even slicker to make signal names be valid expressions, | |
785 | (the type could be "enum $signal" or some such), then the user could | |
786 | assign them to convenience variables. */ | |
787 | oursig = target_signal_from_name (signum_exp); | |
788 | ||
789 | if (oursig == TARGET_SIGNAL_UNKNOWN) | |
790 | { | |
791 | /* No, try numeric. */ | |
792 | int num = parse_and_eval_address (signum_exp); | |
793 | ||
794 | if (num == 0) | |
795 | oursig = TARGET_SIGNAL_0; | |
796 | else | |
797 | oursig = target_signal_from_command (num); | |
798 | } | |
799 | ||
800 | if (from_tty) | |
801 | { | |
802 | if (oursig == TARGET_SIGNAL_0) | |
803 | printf_filtered ("Continuing with no signal.\n"); | |
804 | else | |
805 | printf_filtered ("Continuing with signal %s.\n", | |
806 | target_signal_to_name (oursig)); | |
807 | } | |
808 | ||
809 | clear_proceed_status (); | |
810 | /* "signal 0" should not get stuck if we are stopped at a breakpoint. | |
811 | FIXME: Neither should "signal foo" but when I tried passing | |
812 | (CORE_ADDR)-1 unconditionally I got a testsuite failure which I haven't | |
813 | tried to track down yet. */ | |
2acceee2 | 814 | proceed (oursig == TARGET_SIGNAL_0 ? (CORE_ADDR) -1 : stop_pc, oursig, 0); |
c906108c SS |
815 | } |
816 | ||
817 | /* Call breakpoint_auto_delete on the current contents of the bpstat | |
818 | pointed to by arg (which is really a bpstat *). */ | |
819 | ||
c906108c SS |
820 | static void |
821 | breakpoint_auto_delete_contents (arg) | |
822 | PTR arg; | |
823 | { | |
c5aa993b | 824 | breakpoint_auto_delete (*(bpstat *) arg); |
c906108c SS |
825 | } |
826 | ||
c906108c SS |
827 | |
828 | /* Execute a "stack dummy", a piece of code stored in the stack | |
829 | by the debugger to be executed in the inferior. | |
830 | ||
831 | To call: first, do PUSH_DUMMY_FRAME. | |
832 | Then push the contents of the dummy. It should end with a breakpoint insn. | |
833 | Then call here, passing address at which to start the dummy. | |
834 | ||
835 | The contents of all registers are saved before the dummy frame is popped | |
836 | and copied into the buffer BUFFER. | |
837 | ||
838 | The dummy's frame is automatically popped whenever that break is hit. | |
839 | If that is the first time the program stops, run_stack_dummy | |
840 | returns to its caller with that frame already gone and returns 0. | |
da59e081 JM |
841 | |
842 | Otherwise, run_stack-dummy returns a non-zero value. | |
843 | If the called function receives a random signal, we do not allow the user | |
844 | to continue executing it as this may not work. The dummy frame is poped | |
845 | and we return 1. | |
846 | If we hit a breakpoint, we leave the frame in place and return 2 (the frame | |
847 | will eventually be popped when we do hit the dummy end breakpoint). */ | |
c906108c | 848 | |
c906108c SS |
849 | int |
850 | run_stack_dummy (addr, buffer) | |
851 | CORE_ADDR addr; | |
7a292a7a | 852 | char *buffer; |
c906108c SS |
853 | { |
854 | struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); | |
ed9a39eb | 855 | int saved_async = 0; |
c906108c SS |
856 | |
857 | /* Now proceed, having reached the desired place. */ | |
858 | clear_proceed_status (); | |
96baa820 | 859 | |
7a292a7a SS |
860 | if (CALL_DUMMY_BREAKPOINT_OFFSET_P) |
861 | { | |
862 | struct breakpoint *bpt; | |
863 | struct symtab_and_line sal; | |
c5aa993b JM |
864 | |
865 | INIT_SAL (&sal); /* initialize to zeroes */ | |
7a292a7a SS |
866 | if (CALL_DUMMY_LOCATION == AT_ENTRY_POINT) |
867 | { | |
868 | sal.pc = CALL_DUMMY_ADDRESS (); | |
869 | } | |
870 | else | |
871 | { | |
872 | sal.pc = addr - CALL_DUMMY_START_OFFSET + CALL_DUMMY_BREAKPOINT_OFFSET; | |
873 | } | |
874 | sal.section = find_pc_overlay (sal.pc); | |
c5aa993b | 875 | |
7a292a7a | 876 | /* Set up a FRAME for the dummy frame so we can pass it to |
c5aa993b JM |
877 | set_momentary_breakpoint. We need to give the breakpoint a |
878 | frame in case there is only one copy of the dummy (e.g. | |
879 | CALL_DUMMY_LOCATION == AFTER_TEXT_END). */ | |
7a292a7a SS |
880 | flush_cached_frames (); |
881 | set_current_frame (create_new_frame (read_fp (), sal.pc)); | |
c5aa993b | 882 | |
7a292a7a | 883 | /* If defined, CALL_DUMMY_BREAKPOINT_OFFSET is where we need to put |
c5aa993b JM |
884 | a breakpoint instruction. If not, the call dummy already has the |
885 | breakpoint instruction in it. | |
886 | ||
887 | addr is the address of the call dummy plus the CALL_DUMMY_START_OFFSET, | |
888 | so we need to subtract the CALL_DUMMY_START_OFFSET. */ | |
7a292a7a SS |
889 | bpt = set_momentary_breakpoint (sal, |
890 | get_current_frame (), | |
891 | bp_call_dummy); | |
892 | bpt->disposition = del; | |
c5aa993b | 893 | |
7a292a7a | 894 | /* If all error()s out of proceed ended up calling normal_stop (and |
c5aa993b JM |
895 | perhaps they should; it already does in the special case of error |
896 | out of resume()), then we wouldn't need this. */ | |
7a292a7a SS |
897 | make_cleanup (breakpoint_auto_delete_contents, &stop_bpstat); |
898 | } | |
c906108c SS |
899 | |
900 | disable_watchpoints_before_interactive_call_start (); | |
901 | proceed_to_finish = 1; /* We want stop_registers, please... */ | |
ed9a39eb JM |
902 | |
903 | if (target_can_async_p ()) | |
904 | saved_async = target_async_mask (0); | |
905 | ||
c906108c | 906 | proceed (addr, TARGET_SIGNAL_0, 0); |
ed9a39eb JM |
907 | |
908 | if (saved_async) | |
909 | target_async_mask (saved_async); | |
910 | ||
c906108c SS |
911 | enable_watchpoints_after_interactive_call_stop (); |
912 | ||
913 | discard_cleanups (old_cleanups); | |
914 | ||
da59e081 JM |
915 | if (stopped_by_random_signal) |
916 | { | |
917 | /* If the inferior execution fails we need to restore our | |
918 | stack. It is not done by proceed() in this case. */ | |
919 | /* Pop the empty frame that contains the stack dummy. | |
920 | POP_FRAME ends with a setting of the current frame, so we | |
921 | can use that next. */ | |
922 | POP_FRAME; | |
923 | return 1; | |
924 | } | |
925 | ||
926 | /* We may also stop prematurely because we hit a breakpoint in the | |
927 | called routine. We do not pop the frame as the user may wish | |
928 | to single step or continue from there. */ | |
c906108c | 929 | if (!stop_stack_dummy) |
da59e081 | 930 | return 2; |
c906108c | 931 | |
da59e081 | 932 | /* On normal return, the stack dummy has been popped already. */ |
c906108c | 933 | |
7a292a7a | 934 | memcpy (buffer, stop_registers, REGISTER_BYTES); |
c906108c SS |
935 | return 0; |
936 | } | |
937 | \f | |
938 | /* Proceed until we reach a different source line with pc greater than | |
939 | our current one or exit the function. We skip calls in both cases. | |
940 | ||
941 | Note that eventually this command should probably be changed so | |
942 | that only source lines are printed out when we hit the breakpoint | |
943 | we set. This may involve changes to wait_for_inferior and the | |
944 | proceed status code. */ | |
945 | ||
946 | /* ARGSUSED */ | |
947 | static void | |
948 | until_next_command (from_tty) | |
949 | int from_tty; | |
950 | { | |
951 | struct frame_info *frame; | |
952 | CORE_ADDR pc; | |
953 | struct symbol *func; | |
954 | struct symtab_and_line sal; | |
c5aa993b | 955 | |
c906108c SS |
956 | clear_proceed_status (); |
957 | ||
958 | frame = get_current_frame (); | |
959 | ||
960 | /* Step until either exited from this function or greater | |
961 | than the current line (if in symbolic section) or pc (if | |
962 | not). */ | |
963 | ||
964 | pc = read_pc (); | |
965 | func = find_pc_function (pc); | |
c5aa993b | 966 | |
c906108c SS |
967 | if (!func) |
968 | { | |
969 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (pc); | |
c5aa993b | 970 | |
c906108c SS |
971 | if (msymbol == NULL) |
972 | error ("Execution is not within a known function."); | |
c5aa993b | 973 | |
c906108c SS |
974 | step_range_start = SYMBOL_VALUE_ADDRESS (msymbol); |
975 | step_range_end = pc; | |
976 | } | |
977 | else | |
978 | { | |
979 | sal = find_pc_line (pc, 0); | |
c5aa993b | 980 | |
c906108c SS |
981 | step_range_start = BLOCK_START (SYMBOL_BLOCK_VALUE (func)); |
982 | step_range_end = sal.end; | |
983 | } | |
c5aa993b | 984 | |
c906108c SS |
985 | step_over_calls = 1; |
986 | step_frame_address = FRAME_FP (frame); | |
987 | step_sp = read_sp (); | |
988 | ||
989 | step_multi = 0; /* Only one call to proceed */ | |
c5aa993b | 990 | |
2acceee2 | 991 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); |
c906108c SS |
992 | } |
993 | ||
c5aa993b | 994 | static void |
c906108c SS |
995 | until_command (arg, from_tty) |
996 | char *arg; | |
997 | int from_tty; | |
998 | { | |
43ff13b4 JM |
999 | int async_exec = 0; |
1000 | ||
c906108c SS |
1001 | if (!target_has_execution) |
1002 | error ("The program is not running."); | |
43ff13b4 JM |
1003 | |
1004 | /* Find out whether we must run in the background. */ | |
1005 | if (arg != NULL) | |
1006 | async_exec = strip_bg_char (&arg); | |
1007 | ||
1008 | /* If we must run in the background, but the target can't do it, | |
1009 | error out. */ | |
6426a772 | 1010 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
1011 | error ("Asynchronous execution not supported on this target."); |
1012 | ||
1013 | /* If we are not asked to run in the bg, then prepare to run in the | |
1014 | foreground, synchronously. */ | |
6426a772 | 1015 | if (event_loop_p && !async_exec && target_can_async_p ()) |
c5aa993b | 1016 | { |
43ff13b4 | 1017 | /* Simulate synchronous execution */ |
6426a772 | 1018 | async_disable_stdin (); |
43ff13b4 JM |
1019 | } |
1020 | ||
c906108c SS |
1021 | if (arg) |
1022 | until_break_command (arg, from_tty); | |
1023 | else | |
1024 | until_next_command (from_tty); | |
1025 | } | |
1026 | \f | |
43ff13b4 | 1027 | |
11cf8741 JM |
1028 | /* Print the result of a function at the end of a 'finish' command. */ |
1029 | static void | |
1030 | print_return_value (int structure_return, struct type *value_type) | |
1031 | { | |
1032 | register value_ptr value; | |
1033 | ||
1034 | if (!structure_return) | |
1035 | { | |
1036 | value = value_being_returned (value_type, stop_registers, structure_return); | |
1037 | printf_filtered ("Value returned is $%d = ", record_latest_value (value)); | |
1038 | value_print (value, gdb_stdout, 0, Val_no_prettyprint); | |
1039 | printf_filtered ("\n"); | |
1040 | } | |
1041 | else | |
1042 | { | |
1043 | /* We cannot determine the contents of the structure because | |
1044 | it is on the stack, and we don't know where, since we did not | |
1045 | initiate the call, as opposed to the call_function_by_hand case */ | |
1046 | #ifdef VALUE_RETURNED_FROM_STACK | |
1047 | value = 0; | |
1048 | printf_filtered ("Value returned has type: %s.", TYPE_NAME (value_type)); | |
1049 | printf_filtered (" Cannot determine contents\n"); | |
1050 | #else | |
1051 | value = value_being_returned (value_type, stop_registers, structure_return); | |
1052 | printf_filtered ("Value returned is $%d = ", record_latest_value (value)); | |
1053 | value_print (value, gdb_stdout, 0, Val_no_prettyprint); | |
1054 | printf_filtered ("\n"); | |
1055 | #endif | |
1056 | } | |
1057 | } | |
1058 | ||
43ff13b4 JM |
1059 | /* Stuff that needs to be done by the finish command after the target |
1060 | has stopped. In asynchronous mode, we wait for the target to stop in | |
1061 | the call to poll or select in the event loop, so it is impossible to | |
1062 | do all the stuff as part of the finish_command function itself. The | |
1063 | only chance we have to complete this command is in | |
1064 | fetch_inferior_event, which is called by the event loop as soon as it | |
1065 | detects that the target has stopped. This function is called via the | |
1066 | cmd_continaution pointer. */ | |
1067 | void | |
1068 | finish_command_continuation (arg) | |
1069 | struct continuation_arg *arg; | |
1070 | { | |
1071 | register struct symbol *function; | |
1072 | struct breakpoint *breakpoint; | |
0d06e24b | 1073 | struct cleanup *cleanups; |
c5aa993b | 1074 | |
43ff13b4 JM |
1075 | breakpoint = (struct breakpoint *) arg->data; |
1076 | function = (struct symbol *) (arg->next)->data; | |
0d06e24b | 1077 | cleanups = (struct cleanup *) (arg->next->next)->data; |
43ff13b4 | 1078 | |
c5aa993b | 1079 | if (bpstat_find_breakpoint (stop_bpstat, breakpoint) != NULL |
43ff13b4 JM |
1080 | && function != 0) |
1081 | { | |
1082 | struct type *value_type; | |
43ff13b4 JM |
1083 | CORE_ADDR funcaddr; |
1084 | int struct_return; | |
1085 | ||
1086 | value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (function)); | |
1087 | if (!value_type) | |
96baa820 | 1088 | internal_error ("finish_command: function has no target type"); |
c5aa993b | 1089 | |
43ff13b4 JM |
1090 | if (TYPE_CODE (value_type) == TYPE_CODE_VOID) |
1091 | { | |
0d06e24b | 1092 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
1093 | return; |
1094 | } | |
1095 | ||
1096 | funcaddr = BLOCK_START (SYMBOL_BLOCK_VALUE (function)); | |
1097 | ||
1098 | struct_return = using_struct_return (value_of_variable (function, NULL), | |
c5aa993b JM |
1099 | funcaddr, |
1100 | check_typedef (value_type), | |
11cf8741 | 1101 | BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function))); |
43ff13b4 | 1102 | |
11cf8741 | 1103 | print_return_value (struct_return, value_type); |
43ff13b4 | 1104 | } |
0d06e24b | 1105 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
1106 | } |
1107 | ||
c906108c SS |
1108 | /* "finish": Set a temporary breakpoint at the place |
1109 | the selected frame will return to, then continue. */ | |
1110 | ||
1111 | static void | |
1112 | finish_command (arg, from_tty) | |
1113 | char *arg; | |
1114 | int from_tty; | |
1115 | { | |
1116 | struct symtab_and_line sal; | |
1117 | register struct frame_info *frame; | |
1118 | register struct symbol *function; | |
1119 | struct breakpoint *breakpoint; | |
1120 | struct cleanup *old_chain; | |
0d06e24b | 1121 | struct continuation_arg *arg1, *arg2, *arg3; |
43ff13b4 JM |
1122 | |
1123 | int async_exec = 0; | |
1124 | ||
1125 | /* Find out whether we must run in the background. */ | |
1126 | if (arg != NULL) | |
1127 | async_exec = strip_bg_char (&arg); | |
1128 | ||
1129 | /* If we must run in the background, but the target can't do it, | |
1130 | error out. */ | |
6426a772 | 1131 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
1132 | error ("Asynchronous execution not supported on this target."); |
1133 | ||
1134 | /* If we are not asked to run in the bg, then prepare to run in the | |
1135 | foreground, synchronously. */ | |
6426a772 | 1136 | if (event_loop_p && !async_exec && target_can_async_p ()) |
c5aa993b | 1137 | { |
43ff13b4 | 1138 | /* Simulate synchronous execution */ |
6426a772 | 1139 | async_disable_stdin (); |
43ff13b4 | 1140 | } |
c906108c SS |
1141 | |
1142 | if (arg) | |
1143 | error ("The \"finish\" command does not take any arguments."); | |
1144 | if (!target_has_execution) | |
1145 | error ("The program is not running."); | |
1146 | if (selected_frame == NULL) | |
1147 | error ("No selected frame."); | |
1148 | ||
1149 | frame = get_prev_frame (selected_frame); | |
1150 | if (frame == 0) | |
1151 | error ("\"finish\" not meaningful in the outermost frame."); | |
1152 | ||
1153 | clear_proceed_status (); | |
1154 | ||
1155 | sal = find_pc_line (frame->pc, 0); | |
1156 | sal.pc = frame->pc; | |
1157 | ||
1158 | breakpoint = set_momentary_breakpoint (sal, frame, bp_finish); | |
1159 | ||
6426a772 | 1160 | if (!event_loop_p || !target_can_async_p ()) |
43ff13b4 JM |
1161 | old_chain = make_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint); |
1162 | else | |
0d06e24b | 1163 | old_chain = make_exec_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint); |
c906108c SS |
1164 | |
1165 | /* Find the function we will return from. */ | |
1166 | ||
1167 | function = find_pc_function (selected_frame->pc); | |
1168 | ||
1169 | /* Print info on the selected frame, including level number | |
1170 | but not source. */ | |
1171 | if (from_tty) | |
1172 | { | |
1173 | printf_filtered ("Run till exit from "); | |
1174 | print_stack_frame (selected_frame, selected_frame_level, 0); | |
1175 | } | |
1176 | ||
43ff13b4 JM |
1177 | /* If running asynchronously and the target support asynchronous |
1178 | execution, set things up for the rest of the finish command to be | |
1179 | completed later on, when gdb has detected that the target has | |
1180 | stopped, in fetch_inferior_event. */ | |
6426a772 | 1181 | if (event_loop_p && target_can_async_p ()) |
43ff13b4 | 1182 | { |
c5aa993b | 1183 | arg1 = |
43ff13b4 | 1184 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); |
c5aa993b | 1185 | arg2 = |
43ff13b4 | 1186 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); |
0d06e24b JM |
1187 | arg3 = |
1188 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
43ff13b4 | 1189 | arg1->next = arg2; |
0d06e24b JM |
1190 | arg2->next = arg3; |
1191 | arg3->next = NULL; | |
43ff13b4 JM |
1192 | arg1->data = (PTR) breakpoint; |
1193 | arg2->data = (PTR) function; | |
0d06e24b | 1194 | arg3->data = (PTR) old_chain; |
43ff13b4 JM |
1195 | add_continuation (finish_command_continuation, arg1); |
1196 | } | |
1197 | ||
c5aa993b | 1198 | proceed_to_finish = 1; /* We want stop_registers, please... */ |
2acceee2 | 1199 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); |
c906108c | 1200 | |
43ff13b4 JM |
1201 | /* Do this only if not running asynchronously or if the target |
1202 | cannot do async execution. Otherwise, complete this command when | |
c5aa993b | 1203 | the target actually stops, in fetch_inferior_event. */ |
6426a772 | 1204 | if (!event_loop_p || !target_can_async_p ()) |
c5aa993b JM |
1205 | { |
1206 | ||
1207 | /* Did we stop at our breakpoint? */ | |
1208 | if (bpstat_find_breakpoint (stop_bpstat, breakpoint) != NULL | |
1209 | && function != 0) | |
1210 | { | |
1211 | struct type *value_type; | |
c5aa993b JM |
1212 | CORE_ADDR funcaddr; |
1213 | int struct_return; | |
1214 | ||
1215 | value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (function)); | |
1216 | if (!value_type) | |
96baa820 | 1217 | internal_error ("finish_command: function has no target type"); |
c5aa993b JM |
1218 | |
1219 | /* FIXME: Shouldn't we do the cleanups before returning? */ | |
1220 | if (TYPE_CODE (value_type) == TYPE_CODE_VOID) | |
1221 | return; | |
1222 | ||
1223 | funcaddr = BLOCK_START (SYMBOL_BLOCK_VALUE (function)); | |
1224 | ||
1225 | struct_return = | |
1226 | using_struct_return (value_of_variable (function, NULL), | |
1227 | funcaddr, | |
1228 | check_typedef (value_type), | |
1229 | BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function))); | |
1230 | ||
11cf8741 | 1231 | print_return_value (struct_return, value_type); |
c5aa993b JM |
1232 | } |
1233 | do_cleanups (old_chain); | |
1234 | } | |
c906108c SS |
1235 | } |
1236 | \f | |
1237 | /* ARGSUSED */ | |
1238 | static void | |
1239 | program_info (args, from_tty) | |
c5aa993b JM |
1240 | char *args; |
1241 | int from_tty; | |
c906108c SS |
1242 | { |
1243 | bpstat bs = stop_bpstat; | |
1244 | int num = bpstat_num (&bs); | |
c5aa993b | 1245 | |
c906108c SS |
1246 | if (!target_has_execution) |
1247 | { | |
1248 | printf_filtered ("The program being debugged is not being run.\n"); | |
1249 | return; | |
1250 | } | |
1251 | ||
1252 | target_files_info (); | |
1253 | printf_filtered ("Program stopped at %s.\n", | |
c5aa993b | 1254 | local_hex_string ((unsigned long) stop_pc)); |
c906108c SS |
1255 | if (stop_step) |
1256 | printf_filtered ("It stopped after being stepped.\n"); | |
1257 | else if (num != 0) | |
1258 | { | |
1259 | /* There may be several breakpoints in the same place, so this | |
c5aa993b | 1260 | isn't as strange as it seems. */ |
c906108c SS |
1261 | while (num != 0) |
1262 | { | |
1263 | if (num < 0) | |
1264 | { | |
1265 | printf_filtered ("It stopped at a breakpoint that has "); | |
1266 | printf_filtered ("since been deleted.\n"); | |
1267 | } | |
1268 | else | |
1269 | printf_filtered ("It stopped at breakpoint %d.\n", num); | |
1270 | num = bpstat_num (&bs); | |
1271 | } | |
1272 | } | |
1273 | else if (stop_signal != TARGET_SIGNAL_0) | |
1274 | { | |
1275 | printf_filtered ("It stopped with signal %s, %s.\n", | |
1276 | target_signal_to_name (stop_signal), | |
1277 | target_signal_to_string (stop_signal)); | |
1278 | } | |
1279 | ||
1280 | if (!from_tty) | |
1281 | { | |
1282 | printf_filtered ("Type \"info stack\" or \"info registers\" "); | |
1283 | printf_filtered ("for more information.\n"); | |
1284 | } | |
1285 | } | |
1286 | \f | |
1287 | static void | |
1288 | environment_info (var, from_tty) | |
1289 | char *var; | |
1290 | int from_tty; | |
1291 | { | |
1292 | if (var) | |
1293 | { | |
1294 | register char *val = get_in_environ (inferior_environ, var); | |
1295 | if (val) | |
1296 | { | |
1297 | puts_filtered (var); | |
1298 | puts_filtered (" = "); | |
1299 | puts_filtered (val); | |
1300 | puts_filtered ("\n"); | |
1301 | } | |
1302 | else | |
1303 | { | |
1304 | puts_filtered ("Environment variable \""); | |
1305 | puts_filtered (var); | |
1306 | puts_filtered ("\" not defined.\n"); | |
1307 | } | |
1308 | } | |
1309 | else | |
1310 | { | |
1311 | register char **vector = environ_vector (inferior_environ); | |
1312 | while (*vector) | |
1313 | { | |
1314 | puts_filtered (*vector++); | |
1315 | puts_filtered ("\n"); | |
1316 | } | |
1317 | } | |
1318 | } | |
1319 | ||
1320 | static void | |
1321 | set_environment_command (arg, from_tty) | |
1322 | char *arg; | |
1323 | int from_tty; | |
1324 | { | |
1325 | register char *p, *val, *var; | |
1326 | int nullset = 0; | |
1327 | ||
1328 | if (arg == 0) | |
1329 | error_no_arg ("environment variable and value"); | |
1330 | ||
1331 | /* Find seperation between variable name and value */ | |
1332 | p = (char *) strchr (arg, '='); | |
1333 | val = (char *) strchr (arg, ' '); | |
1334 | ||
1335 | if (p != 0 && val != 0) | |
1336 | { | |
1337 | /* We have both a space and an equals. If the space is before the | |
c5aa993b JM |
1338 | equals, walk forward over the spaces til we see a nonspace |
1339 | (possibly the equals). */ | |
c906108c SS |
1340 | if (p > val) |
1341 | while (*val == ' ') | |
1342 | val++; | |
1343 | ||
1344 | /* Now if the = is after the char following the spaces, | |
c5aa993b | 1345 | take the char following the spaces. */ |
c906108c SS |
1346 | if (p > val) |
1347 | p = val - 1; | |
1348 | } | |
1349 | else if (val != 0 && p == 0) | |
1350 | p = val; | |
1351 | ||
1352 | if (p == arg) | |
1353 | error_no_arg ("environment variable to set"); | |
1354 | ||
1355 | if (p == 0 || p[1] == 0) | |
1356 | { | |
1357 | nullset = 1; | |
1358 | if (p == 0) | |
1359 | p = arg + strlen (arg); /* So that savestring below will work */ | |
1360 | } | |
1361 | else | |
1362 | { | |
1363 | /* Not setting variable value to null */ | |
1364 | val = p + 1; | |
1365 | while (*val == ' ' || *val == '\t') | |
1366 | val++; | |
1367 | } | |
1368 | ||
c5aa993b JM |
1369 | while (p != arg && (p[-1] == ' ' || p[-1] == '\t')) |
1370 | p--; | |
c906108c SS |
1371 | |
1372 | var = savestring (arg, p - arg); | |
1373 | if (nullset) | |
1374 | { | |
1375 | printf_filtered ("Setting environment variable "); | |
1376 | printf_filtered ("\"%s\" to null value.\n", var); | |
1377 | set_in_environ (inferior_environ, var, ""); | |
1378 | } | |
1379 | else | |
1380 | set_in_environ (inferior_environ, var, val); | |
1381 | free (var); | |
1382 | } | |
1383 | ||
1384 | static void | |
1385 | unset_environment_command (var, from_tty) | |
1386 | char *var; | |
1387 | int from_tty; | |
1388 | { | |
1389 | if (var == 0) | |
1390 | { | |
1391 | /* If there is no argument, delete all environment variables. | |
c5aa993b | 1392 | Ask for confirmation if reading from the terminal. */ |
c906108c SS |
1393 | if (!from_tty || query ("Delete all environment variables? ")) |
1394 | { | |
1395 | free_environ (inferior_environ); | |
1396 | inferior_environ = make_environ (); | |
1397 | } | |
1398 | } | |
1399 | else | |
1400 | unset_in_environ (inferior_environ, var); | |
1401 | } | |
1402 | ||
1403 | /* Handle the execution path (PATH variable) */ | |
1404 | ||
1405 | static const char path_var_name[] = "PATH"; | |
1406 | ||
1407 | /* ARGSUSED */ | |
1408 | static void | |
1409 | path_info (args, from_tty) | |
1410 | char *args; | |
1411 | int from_tty; | |
1412 | { | |
1413 | puts_filtered ("Executable and object file path: "); | |
1414 | puts_filtered (get_in_environ (inferior_environ, path_var_name)); | |
1415 | puts_filtered ("\n"); | |
1416 | } | |
1417 | ||
1418 | /* Add zero or more directories to the front of the execution path. */ | |
1419 | ||
1420 | static void | |
1421 | path_command (dirname, from_tty) | |
1422 | char *dirname; | |
1423 | int from_tty; | |
1424 | { | |
1425 | char *exec_path; | |
1426 | char *env; | |
1427 | dont_repeat (); | |
1428 | env = get_in_environ (inferior_environ, path_var_name); | |
1429 | /* Can be null if path is not set */ | |
1430 | if (!env) | |
1431 | env = ""; | |
1432 | exec_path = strsave (env); | |
1433 | mod_path (dirname, &exec_path); | |
1434 | set_in_environ (inferior_environ, path_var_name, exec_path); | |
1435 | free (exec_path); | |
1436 | if (from_tty) | |
c5aa993b | 1437 | path_info ((char *) NULL, from_tty); |
c906108c | 1438 | } |
c906108c | 1439 | \f |
c5aa993b | 1440 | |
c906108c SS |
1441 | #ifdef REGISTER_NAMES |
1442 | char *gdb_register_names[] = REGISTER_NAMES; | |
1443 | #endif | |
1444 | /* Print out the machine register regnum. If regnum is -1, | |
1445 | print all registers (fpregs == 1) or all non-float registers | |
1446 | (fpregs == 0). | |
1447 | ||
1448 | For most machines, having all_registers_info() print the | |
1449 | register(s) one per line is good enough. If a different format | |
1450 | is required, (eg, for MIPS or Pyramid 90x, which both have | |
1451 | lots of regs), or there is an existing convention for showing | |
1452 | all the registers, define the macro DO_REGISTERS_INFO(regnum, fp) | |
c5aa993b | 1453 | to provide that format. */ |
c906108c SS |
1454 | |
1455 | #if !defined (DO_REGISTERS_INFO) | |
1456 | ||
1457 | #define DO_REGISTERS_INFO(regnum, fp) do_registers_info(regnum, fp) | |
1458 | ||
1459 | static void | |
1460 | do_registers_info (regnum, fpregs) | |
1461 | int regnum; | |
1462 | int fpregs; | |
1463 | { | |
1464 | register int i; | |
1465 | int numregs = ARCH_NUM_REGS; | |
1466 | ||
1467 | for (i = 0; i < numregs; i++) | |
1468 | { | |
1469 | char raw_buffer[MAX_REGISTER_RAW_SIZE]; | |
1470 | char virtual_buffer[MAX_REGISTER_VIRTUAL_SIZE]; | |
1471 | ||
1472 | /* Decide between printing all regs, nonfloat regs, or specific reg. */ | |
c5aa993b JM |
1473 | if (regnum == -1) |
1474 | { | |
1475 | if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT && !fpregs) | |
1476 | continue; | |
1477 | } | |
1478 | else | |
1479 | { | |
1480 | if (i != regnum) | |
1481 | continue; | |
1482 | } | |
c906108c SS |
1483 | |
1484 | /* If the register name is empty, it is undefined for this | |
c5aa993b | 1485 | processor, so don't display anything. */ |
c906108c SS |
1486 | if (REGISTER_NAME (i) == NULL || *(REGISTER_NAME (i)) == '\0') |
1487 | continue; | |
1488 | ||
1489 | fputs_filtered (REGISTER_NAME (i), gdb_stdout); | |
1490 | print_spaces_filtered (15 - strlen (REGISTER_NAME (i)), gdb_stdout); | |
1491 | ||
1492 | /* Get the data in raw format. */ | |
1493 | if (read_relative_register_raw_bytes (i, raw_buffer)) | |
1494 | { | |
1495 | printf_filtered ("*value not available*\n"); | |
1496 | continue; | |
1497 | } | |
1498 | ||
1499 | /* Convert raw data to virtual format if necessary. */ | |
c906108c SS |
1500 | if (REGISTER_CONVERTIBLE (i)) |
1501 | { | |
1502 | REGISTER_CONVERT_TO_VIRTUAL (i, REGISTER_VIRTUAL_TYPE (i), | |
1503 | raw_buffer, virtual_buffer); | |
1504 | } | |
1505 | else | |
392a587b JM |
1506 | { |
1507 | memcpy (virtual_buffer, raw_buffer, | |
1508 | REGISTER_VIRTUAL_SIZE (i)); | |
1509 | } | |
c906108c SS |
1510 | |
1511 | /* If virtual format is floating, print it that way, and in raw hex. */ | |
1512 | if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT) | |
1513 | { | |
1514 | register int j; | |
1515 | ||
1516 | #ifdef INVALID_FLOAT | |
1517 | if (INVALID_FLOAT (virtual_buffer, REGISTER_VIRTUAL_SIZE (i))) | |
1518 | printf_filtered ("<invalid float>"); | |
1519 | else | |
1520 | #endif | |
1521 | val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0, | |
1522 | gdb_stdout, 0, 1, 0, Val_pretty_default); | |
1523 | ||
1524 | printf_filtered ("\t(raw 0x"); | |
1525 | for (j = 0; j < REGISTER_RAW_SIZE (i); j++) | |
1526 | { | |
1527 | register int idx = TARGET_BYTE_ORDER == BIG_ENDIAN ? j | |
c5aa993b JM |
1528 | : REGISTER_RAW_SIZE (i) - 1 - j; |
1529 | printf_filtered ("%02x", (unsigned char) raw_buffer[idx]); | |
c906108c SS |
1530 | } |
1531 | printf_filtered (")"); | |
1532 | } | |
1533 | ||
1534 | /* FIXME! val_print probably can handle all of these cases now... */ | |
1535 | ||
1536 | /* Else if virtual format is too long for printf, | |
c5aa993b | 1537 | print in hex a byte at a time. */ |
c906108c SS |
1538 | else if (REGISTER_VIRTUAL_SIZE (i) > (int) sizeof (long)) |
1539 | { | |
1540 | register int j; | |
1541 | printf_filtered ("0x"); | |
1542 | for (j = 0; j < REGISTER_VIRTUAL_SIZE (i); j++) | |
c5aa993b | 1543 | printf_filtered ("%02x", (unsigned char) virtual_buffer[j]); |
c906108c SS |
1544 | } |
1545 | /* Else print as integer in hex and in decimal. */ | |
1546 | else | |
1547 | { | |
1548 | val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0, | |
1549 | gdb_stdout, 'x', 1, 0, Val_pretty_default); | |
1550 | printf_filtered ("\t"); | |
1551 | val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0, | |
c5aa993b | 1552 | gdb_stdout, 0, 1, 0, Val_pretty_default); |
c906108c SS |
1553 | } |
1554 | ||
1555 | /* The SPARC wants to print even-numbered float regs as doubles | |
c5aa993b | 1556 | in addition to printing them as floats. */ |
c906108c SS |
1557 | #ifdef PRINT_REGISTER_HOOK |
1558 | PRINT_REGISTER_HOOK (i); | |
1559 | #endif | |
1560 | ||
1561 | printf_filtered ("\n"); | |
1562 | } | |
1563 | } | |
1564 | #endif /* no DO_REGISTERS_INFO. */ | |
1565 | ||
c906108c SS |
1566 | void |
1567 | registers_info (addr_exp, fpregs) | |
1568 | char *addr_exp; | |
1569 | int fpregs; | |
1570 | { | |
1571 | int regnum, numregs; | |
1572 | register char *end; | |
1573 | ||
1574 | if (!target_has_registers) | |
1575 | error ("The program has no registers now."); | |
1576 | if (selected_frame == NULL) | |
1577 | error ("No selected frame."); | |
1578 | ||
1579 | if (!addr_exp) | |
1580 | { | |
c5aa993b | 1581 | DO_REGISTERS_INFO (-1, fpregs); |
c906108c SS |
1582 | return; |
1583 | } | |
1584 | ||
1585 | do | |
c5aa993b | 1586 | { |
c906108c SS |
1587 | if (addr_exp[0] == '$') |
1588 | addr_exp++; | |
1589 | end = addr_exp; | |
1590 | while (*end != '\0' && *end != ' ' && *end != '\t') | |
1591 | ++end; | |
1592 | numregs = ARCH_NUM_REGS; | |
1593 | ||
1594 | regnum = target_map_name_to_register (addr_exp, end - addr_exp); | |
c5aa993b | 1595 | if (regnum >= 0) |
c906108c SS |
1596 | goto found; |
1597 | ||
1598 | regnum = numregs; | |
1599 | ||
1600 | if (*addr_exp >= '0' && *addr_exp <= '9') | |
c5aa993b JM |
1601 | regnum = atoi (addr_exp); /* Take a number */ |
1602 | if (regnum >= numregs) /* Bad name, or bad number */ | |
c906108c SS |
1603 | error ("%.*s: invalid register", end - addr_exp, addr_exp); |
1604 | ||
c5aa993b JM |
1605 | found: |
1606 | DO_REGISTERS_INFO (regnum, fpregs); | |
c906108c SS |
1607 | |
1608 | addr_exp = end; | |
1609 | while (*addr_exp == ' ' || *addr_exp == '\t') | |
1610 | ++addr_exp; | |
c5aa993b JM |
1611 | } |
1612 | while (*addr_exp != '\0'); | |
c906108c SS |
1613 | } |
1614 | ||
1615 | void | |
1616 | all_registers_info (addr_exp, from_tty) | |
1617 | char *addr_exp; | |
1618 | int from_tty; | |
1619 | { | |
1620 | registers_info (addr_exp, 1); | |
1621 | } | |
1622 | ||
1623 | void | |
1624 | nofp_registers_info (addr_exp, from_tty) | |
1625 | char *addr_exp; | |
1626 | int from_tty; | |
1627 | { | |
1628 | registers_info (addr_exp, 0); | |
1629 | } | |
c906108c | 1630 | \f |
c5aa993b | 1631 | |
c906108c SS |
1632 | /* |
1633 | * TODO: | |
1634 | * Should save/restore the tty state since it might be that the | |
1635 | * program to be debugged was started on this tty and it wants | |
1636 | * the tty in some state other than what we want. If it's running | |
1637 | * on another terminal or without a terminal, then saving and | |
1638 | * restoring the tty state is a harmless no-op. | |
1639 | * This only needs to be done if we are attaching to a process. | |
1640 | */ | |
1641 | ||
1642 | /* | |
1643 | attach_command -- | |
1644 | takes a program started up outside of gdb and ``attaches'' to it. | |
1645 | This stops it cold in its tracks and allows us to start debugging it. | |
1646 | and wait for the trace-trap that results from attaching. */ | |
1647 | ||
1648 | void | |
1649 | attach_command (args, from_tty) | |
1650 | char *args; | |
1651 | int from_tty; | |
1652 | { | |
1653 | #ifdef SOLIB_ADD | |
1654 | extern int auto_solib_add; | |
1655 | #endif | |
1656 | ||
c5aa993b JM |
1657 | char *exec_file; |
1658 | char *full_exec_path = NULL; | |
c906108c | 1659 | |
c5aa993b | 1660 | dont_repeat (); /* Not for the faint of heart */ |
c906108c SS |
1661 | |
1662 | if (target_has_execution) | |
1663 | { | |
1664 | if (query ("A program is being debugged already. Kill it? ")) | |
1665 | target_kill (); | |
1666 | else | |
1667 | error ("Not killed."); | |
1668 | } | |
1669 | ||
1670 | target_attach (args, from_tty); | |
1671 | ||
1672 | /* Set up the "saved terminal modes" of the inferior | |
1673 | based on what modes we are starting it with. */ | |
1674 | target_terminal_init (); | |
1675 | ||
1676 | /* Install inferior's terminal modes. */ | |
1677 | target_terminal_inferior (); | |
1678 | ||
1679 | /* Set up execution context to know that we should return from | |
1680 | wait_for_inferior as soon as the target reports a stop. */ | |
1681 | init_wait_for_inferior (); | |
1682 | clear_proceed_status (); | |
1683 | stop_soon_quietly = 1; | |
1684 | ||
1685 | /* No traps are generated when attaching to inferior under Mach 3 | |
1686 | or GNU hurd. */ | |
1687 | #ifndef ATTACH_NO_WAIT | |
1688 | wait_for_inferior (); | |
1689 | #endif | |
1690 | ||
1691 | /* | |
1692 | * If no exec file is yet known, try to determine it from the | |
1693 | * process itself. | |
1694 | */ | |
1695 | exec_file = (char *) get_exec_file (0); | |
c5aa993b JM |
1696 | if (!exec_file) |
1697 | { | |
1698 | exec_file = target_pid_to_exec_file (inferior_pid); | |
1699 | if (exec_file) | |
1700 | { | |
1701 | /* It's possible we don't have a full path, but rather just a | |
1702 | filename. Some targets, such as HP-UX, don't provide the | |
1703 | full path, sigh. | |
1704 | ||
1705 | Attempt to qualify the filename against the source path. | |
1706 | (If that fails, we'll just fall back on the original | |
1707 | filename. Not much more we can do...) | |
1708 | */ | |
1709 | if (!source_full_path_of (exec_file, &full_exec_path)) | |
1710 | full_exec_path = savestring (exec_file, strlen (exec_file)); | |
1711 | ||
1712 | exec_file_attach (full_exec_path, from_tty); | |
1713 | symbol_file_command (full_exec_path, from_tty); | |
1714 | } | |
c906108c | 1715 | } |
c906108c SS |
1716 | |
1717 | #ifdef SOLIB_ADD | |
1718 | if (auto_solib_add) | |
1719 | { | |
1720 | /* Add shared library symbols from the newly attached process, if any. */ | |
c5aa993b | 1721 | SOLIB_ADD ((char *) 0, from_tty, ¤t_target); |
c906108c SS |
1722 | re_enable_breakpoints_in_shlibs (); |
1723 | } | |
1724 | #endif | |
1725 | ||
1726 | /* Take any necessary post-attaching actions for this platform. | |
c5aa993b | 1727 | */ |
c906108c SS |
1728 | target_post_attach (inferior_pid); |
1729 | ||
1730 | normal_stop (); | |
6426a772 JM |
1731 | |
1732 | if (attach_hook) | |
1733 | attach_hook (); | |
c906108c SS |
1734 | } |
1735 | ||
1736 | /* | |
1737 | * detach_command -- | |
1738 | * takes a program previously attached to and detaches it. | |
1739 | * The program resumes execution and will no longer stop | |
1740 | * on signals, etc. We better not have left any breakpoints | |
1741 | * in the program or it'll die when it hits one. For this | |
1742 | * to work, it may be necessary for the process to have been | |
1743 | * previously attached. It *might* work if the program was | |
1744 | * started via the normal ptrace (PTRACE_TRACEME). | |
1745 | */ | |
1746 | ||
1747 | static void | |
1748 | detach_command (args, from_tty) | |
1749 | char *args; | |
1750 | int from_tty; | |
1751 | { | |
c5aa993b | 1752 | dont_repeat (); /* Not for the faint of heart */ |
c906108c SS |
1753 | target_detach (args, from_tty); |
1754 | #if defined(SOLIB_RESTART) | |
1755 | SOLIB_RESTART (); | |
1756 | #endif | |
6426a772 JM |
1757 | if (detach_hook) |
1758 | detach_hook (); | |
c906108c SS |
1759 | } |
1760 | ||
43ff13b4 JM |
1761 | /* Stop the execution of the target while running in async mode, in |
1762 | the backgound. */ | |
1763 | static void | |
1764 | interrupt_target_command (args, from_tty) | |
1765 | char *args; | |
1766 | int from_tty; | |
1767 | { | |
6426a772 | 1768 | if (event_loop_p && target_can_async_p ()) |
43ff13b4 | 1769 | { |
c5aa993b | 1770 | dont_repeat (); /* Not for the faint of heart */ |
43ff13b4 JM |
1771 | target_stop (); |
1772 | } | |
1773 | } | |
1774 | ||
c906108c SS |
1775 | /* ARGSUSED */ |
1776 | static void | |
1777 | float_info (addr_exp, from_tty) | |
1778 | char *addr_exp; | |
1779 | int from_tty; | |
1780 | { | |
1781 | #ifdef FLOAT_INFO | |
1782 | FLOAT_INFO; | |
1783 | #else | |
1784 | printf_filtered ("No floating point info available for this processor.\n"); | |
1785 | #endif | |
1786 | } | |
1787 | \f | |
1788 | /* ARGSUSED */ | |
1789 | static void | |
1790 | unset_command (args, from_tty) | |
1791 | char *args; | |
1792 | int from_tty; | |
1793 | { | |
1794 | printf_filtered ("\"unset\" must be followed by the name of "); | |
1795 | printf_filtered ("an unset subcommand.\n"); | |
1796 | help_list (unsetlist, "unset ", -1, gdb_stdout); | |
1797 | } | |
1798 | ||
1799 | void | |
1800 | _initialize_infcmd () | |
1801 | { | |
1802 | struct cmd_list_element *c; | |
c5aa993b | 1803 | |
c906108c SS |
1804 | add_com ("tty", class_run, tty_command, |
1805 | "Set terminal for future runs of program being debugged."); | |
1806 | ||
1807 | add_show_from_set | |
c5aa993b JM |
1808 | (add_set_cmd ("args", class_run, var_string_noescape, |
1809 | (char *) &inferior_args, | |
1810 | "Set argument list to give program being debugged when it is started.\n\ | |
c906108c SS |
1811 | Follow this command with any number of args, to be passed to the program.", |
1812 | &setlist), | |
1813 | &showlist); | |
1814 | ||
1815 | c = add_cmd | |
1816 | ("environment", no_class, environment_info, | |
1817 | "The environment to give the program, or one variable's value.\n\ | |
1818 | With an argument VAR, prints the value of environment variable VAR to\n\ | |
1819 | give the program being debugged. With no arguments, prints the entire\n\ | |
1820 | environment to be given to the program.", &showlist); | |
1821 | c->completer = noop_completer; | |
1822 | ||
1823 | add_prefix_cmd ("unset", no_class, unset_command, | |
1824 | "Complement to certain \"set\" commands", | |
1825 | &unsetlist, "unset ", 0, &cmdlist); | |
c5aa993b | 1826 | |
c906108c | 1827 | c = add_cmd ("environment", class_run, unset_environment_command, |
c5aa993b | 1828 | "Cancel environment variable VAR for the program.\n\ |
c906108c | 1829 | This does not affect the program until the next \"run\" command.", |
c5aa993b | 1830 | &unsetlist); |
c906108c SS |
1831 | c->completer = noop_completer; |
1832 | ||
1833 | c = add_cmd ("environment", class_run, set_environment_command, | |
1834 | "Set environment variable value to give the program.\n\ | |
1835 | Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\ | |
1836 | VALUES of environment variables are uninterpreted strings.\n\ | |
1837 | This does not affect the program until the next \"run\" command.", | |
c5aa993b | 1838 | &setlist); |
c906108c | 1839 | c->completer = noop_completer; |
c5aa993b | 1840 | |
c906108c | 1841 | add_com ("path", class_files, path_command, |
c5aa993b | 1842 | "Add directory DIR(s) to beginning of search path for object files.\n\ |
c906108c SS |
1843 | $cwd in the path means the current working directory.\n\ |
1844 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
1845 | directories, separated by colons. These directories are searched to find\n\ | |
1846 | fully linked executable files and separately compiled object files as needed."); | |
1847 | ||
1848 | c = add_cmd ("paths", no_class, path_info, | |
c5aa993b | 1849 | "Current search path for finding object files.\n\ |
c906108c SS |
1850 | $cwd in the path means the current working directory.\n\ |
1851 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
1852 | directories, separated by colons. These directories are searched to find\n\ | |
1853 | fully linked executable files and separately compiled object files as needed.", | |
1854 | &showlist); | |
1855 | c->completer = noop_completer; | |
1856 | ||
c5aa993b JM |
1857 | add_com ("attach", class_run, attach_command, |
1858 | "Attach to a process or file outside of GDB.\n\ | |
c906108c SS |
1859 | This command attaches to another target, of the same type as your last\n\ |
1860 | \"target\" command (\"info files\" will show your target stack).\n\ | |
1861 | The command may take as argument a process id or a device file.\n\ | |
1862 | For a process id, you must have permission to send the process a signal,\n\ | |
1863 | and it must have the same effective uid as the debugger.\n\ | |
1864 | When using \"attach\" with a process id, the debugger finds the\n\ | |
1865 | program running in the process, looking first in the current working\n\ | |
1866 | directory, or (if not found there) using the source file search path\n\ | |
1867 | (see the \"directory\" command). You can also use the \"file\" command\n\ | |
1868 | to specify the program, and to load its symbol table."); | |
1869 | ||
1870 | add_com ("detach", class_run, detach_command, | |
1871 | "Detach a process or file previously attached.\n\ | |
1872 | If a process, it is no longer traced, and it continues its execution. If\n\ | |
1873 | you were debugging a file, the file is closed and gdb no longer accesses it."); | |
1874 | ||
1875 | add_com ("signal", class_run, signal_command, | |
1876 | "Continue program giving it signal specified by the argument.\n\ | |
1877 | An argument of \"0\" means continue program without giving it a signal."); | |
1878 | ||
1879 | add_com ("stepi", class_run, stepi_command, | |
1880 | "Step one instruction exactly.\n\ | |
1881 | Argument N means do this N times (or till program stops for another reason)."); | |
1882 | add_com_alias ("si", "stepi", class_alias, 0); | |
1883 | ||
1884 | add_com ("nexti", class_run, nexti_command, | |
1885 | "Step one instruction, but proceed through subroutine calls.\n\ | |
1886 | Argument N means do this N times (or till program stops for another reason)."); | |
1887 | add_com_alias ("ni", "nexti", class_alias, 0); | |
1888 | ||
1889 | add_com ("finish", class_run, finish_command, | |
1890 | "Execute until selected stack frame returns.\n\ | |
1891 | Upon return, the value returned is printed and put in the value history."); | |
1892 | ||
1893 | add_com ("next", class_run, next_command, | |
1894 | "Step program, proceeding through subroutine calls.\n\ | |
1895 | Like the \"step\" command as long as subroutine calls do not happen;\n\ | |
1896 | when they do, the call is treated as one instruction.\n\ | |
1897 | Argument N means do this N times (or till program stops for another reason)."); | |
1898 | add_com_alias ("n", "next", class_run, 1); | |
1899 | if (xdb_commands) | |
c5aa993b | 1900 | add_com_alias ("S", "next", class_run, 1); |
c906108c SS |
1901 | |
1902 | add_com ("step", class_run, step_command, | |
1903 | "Step program until it reaches a different source line.\n\ | |
1904 | Argument N means do this N times (or till program stops for another reason)."); | |
1905 | add_com_alias ("s", "step", class_run, 1); | |
1906 | ||
1907 | add_com ("until", class_run, until_command, | |
c5aa993b | 1908 | "Execute until the program reaches a source line greater than the current\n\ |
c906108c SS |
1909 | or a specified line or address or function (same args as break command).\n\ |
1910 | Execution will also stop upon exit from the current stack frame."); | |
1911 | add_com_alias ("u", "until", class_run, 1); | |
c5aa993b | 1912 | |
c906108c SS |
1913 | add_com ("jump", class_run, jump_command, |
1914 | "Continue program being debugged at specified line or address.\n\ | |
1915 | Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\ | |
1916 | for an address to start at."); | |
1917 | ||
b83266a0 SS |
1918 | if (xdb_commands) |
1919 | add_com ("go", class_run, go_command, | |
1920 | "Usage: go <location>\n\ | |
c906108c SS |
1921 | Continue program being debugged, stopping at specified line or \n\ |
1922 | address.\n\ | |
1923 | Give as argument either LINENUM or *ADDR, where ADDR is an \n\ | |
1924 | expression for an address to start at.\n\ | |
1925 | This command is a combination of tbreak and jump."); | |
b83266a0 | 1926 | |
c906108c | 1927 | if (xdb_commands) |
c5aa993b | 1928 | add_com_alias ("g", "go", class_run, 1); |
c906108c SS |
1929 | |
1930 | add_com ("continue", class_run, continue_command, | |
1931 | "Continue program being debugged, after signal or breakpoint.\n\ | |
1932 | If proceeding from breakpoint, a number N may be used as an argument,\n\ | |
1933 | which means to set the ignore count of that breakpoint to N - 1 (so that\n\ | |
1934 | the breakpoint won't break until the Nth time it is reached)."); | |
1935 | add_com_alias ("c", "cont", class_run, 1); | |
1936 | add_com_alias ("fg", "cont", class_run, 1); | |
1937 | ||
1938 | add_com ("run", class_run, run_command, | |
1939 | "Start debugged program. You may specify arguments to give it.\n\ | |
1940 | Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\ | |
1941 | Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\ | |
1942 | With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\ | |
1943 | To cancel previous arguments and run with no arguments,\n\ | |
1944 | use \"set args\" without arguments."); | |
1945 | add_com_alias ("r", "run", class_run, 1); | |
1946 | if (xdb_commands) | |
1947 | add_com ("R", class_run, run_no_args_command, | |
c5aa993b | 1948 | "Start debugged program with no arguments."); |
c906108c | 1949 | |
43ff13b4 JM |
1950 | add_com ("interrupt", class_run, interrupt_target_command, |
1951 | "Interrupt the execution of the debugged program."); | |
1952 | ||
c906108c | 1953 | add_info ("registers", nofp_registers_info, |
c5aa993b | 1954 | "List of integer registers and their contents, for selected stack frame.\n\ |
c906108c SS |
1955 | Register name as argument means describe only that register."); |
1956 | ||
1957 | if (xdb_commands) | |
c5aa993b JM |
1958 | add_com ("lr", class_info, nofp_registers_info, |
1959 | "List of integer registers and their contents, for selected stack frame.\n\ | |
c906108c SS |
1960 | Register name as argument means describe only that register."); |
1961 | add_info ("all-registers", all_registers_info, | |
c5aa993b | 1962 | "List of all registers and their contents, for selected stack frame.\n\ |
c906108c SS |
1963 | Register name as argument means describe only that register."); |
1964 | ||
1965 | add_info ("program", program_info, | |
1966 | "Execution status of the program."); | |
1967 | ||
1968 | add_info ("float", float_info, | |
1969 | "Print the status of the floating point unit\n"); | |
1970 | ||
1971 | inferior_args = savestring ("", 1); /* Initially no args */ | |
1972 | inferior_environ = make_environ (); | |
1973 | init_environ (inferior_environ); | |
1974 | } |