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c906108c | 1 | /* Memory-access and commands for "inferior" process, for GDB. |
4fcf66da | 2 | Copyright 1986, 87, 88, 89, 91, 92, 95, 96, 1998, 1999, 2001 |
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" | |
1adeb98a | 32 | #include "symfile.h" |
c906108c SS |
33 | #include "gdbcore.h" |
34 | #include "target.h" | |
35 | #include "language.h" | |
36 | #include "symfile.h" | |
37 | #include "objfiles.h" | |
8b93c638 JM |
38 | #ifdef UI_OUT |
39 | #include "ui-out.h" | |
40 | #endif | |
6426a772 | 41 | #include "event-top.h" |
96baa820 | 42 | #include "parser-defs.h" |
c906108c SS |
43 | |
44 | /* Functions exported for general use: */ | |
45 | ||
a14ed312 | 46 | void nofp_registers_info (char *, int); |
c906108c | 47 | |
a14ed312 | 48 | void all_registers_info (char *, int); |
c906108c | 49 | |
a14ed312 | 50 | void registers_info (char *, int); |
c906108c SS |
51 | |
52 | /* Local functions: */ | |
53 | ||
a14ed312 | 54 | void continue_command (char *, int); |
c906108c | 55 | |
11cf8741 JM |
56 | static void print_return_value (int struct_return, struct type *value_type); |
57 | ||
a14ed312 | 58 | static void finish_command_continuation (struct continuation_arg *); |
43ff13b4 | 59 | |
a14ed312 | 60 | static void until_next_command (int); |
c906108c | 61 | |
a14ed312 | 62 | static void until_command (char *, int); |
c906108c | 63 | |
a14ed312 | 64 | static void path_info (char *, int); |
c906108c | 65 | |
a14ed312 | 66 | static void path_command (char *, int); |
c906108c | 67 | |
a14ed312 | 68 | static void unset_command (char *, int); |
c906108c | 69 | |
a14ed312 | 70 | static void float_info (char *, int); |
c906108c | 71 | |
a14ed312 | 72 | static void detach_command (char *, int); |
c906108c | 73 | |
96baa820 JM |
74 | static void interrupt_target_command (char *args, int from_tty); |
75 | ||
a14ed312 | 76 | static void unset_environment_command (char *, int); |
c906108c | 77 | |
a14ed312 | 78 | static void set_environment_command (char *, int); |
c906108c | 79 | |
a14ed312 | 80 | static void environment_info (char *, int); |
c906108c | 81 | |
a14ed312 | 82 | static void program_info (char *, int); |
c906108c | 83 | |
a14ed312 | 84 | static void finish_command (char *, int); |
c906108c | 85 | |
a14ed312 | 86 | static void signal_command (char *, int); |
c906108c | 87 | |
a14ed312 | 88 | static void jump_command (char *, int); |
c906108c | 89 | |
a14ed312 | 90 | static void step_1 (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 | 93 | |
a14ed312 | 94 | void nexti_command (char *, int); |
c906108c | 95 | |
a14ed312 | 96 | void stepi_command (char *, int); |
c906108c | 97 | |
a14ed312 | 98 | static void next_command (char *, int); |
c906108c | 99 | |
a14ed312 | 100 | static void step_command (char *, int); |
c906108c | 101 | |
a14ed312 | 102 | static void run_command (char *, int); |
c906108c | 103 | |
a14ed312 | 104 | static void run_no_args_command (char *args, int from_tty); |
392a587b | 105 | |
a14ed312 | 106 | static void go_command (char *line_no, int from_tty); |
392a587b | 107 | |
a14ed312 | 108 | static int strip_bg_char (char **); |
43ff13b4 | 109 | |
a14ed312 | 110 | void _initialize_infcmd (void); |
c906108c SS |
111 | |
112 | #define GO_USAGE "Usage: go <location>\n" | |
113 | ||
a14ed312 | 114 | static void breakpoint_auto_delete_contents (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 | ||
5fbbeb29 | 182 | enum step_over_calls_kind step_over_calls; |
c906108c SS |
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 |
07091751 FN |
195 | /* Accessor routines. */ |
196 | ||
197 | char * | |
198 | get_inferior_args (void) | |
199 | { | |
200 | return inferior_args; | |
201 | } | |
202 | ||
203 | char * | |
204 | set_inferior_args (char *newargs) | |
205 | { | |
206 | char *saved_args = inferior_args; | |
207 | ||
208 | inferior_args = newargs; | |
209 | ||
210 | return saved_args; | |
211 | } | |
c5aa993b | 212 | |
43ff13b4 JM |
213 | /* This function detects whether or not a '&' character (indicating |
214 | background execution) has been added as *the last* of the arguments ARGS | |
215 | of a command. If it has, it removes it and returns 1. Otherwise it | |
216 | does nothing and returns 0. */ | |
c5aa993b | 217 | static int |
fba45db2 | 218 | strip_bg_char (char **args) |
43ff13b4 JM |
219 | { |
220 | char *p = NULL; | |
c5aa993b | 221 | |
9846de1b | 222 | p = strchr (*args, '&'); |
c5aa993b | 223 | |
9846de1b | 224 | if (p) |
43ff13b4 JM |
225 | { |
226 | if (p == (*args + strlen (*args) - 1)) | |
227 | { | |
c5aa993b | 228 | if (strlen (*args) > 1) |
43ff13b4 JM |
229 | { |
230 | do | |
231 | p--; | |
232 | while (*p == ' ' || *p == '\t'); | |
233 | *(p + 1) = '\0'; | |
234 | } | |
235 | else | |
236 | *args = 0; | |
237 | return 1; | |
238 | } | |
239 | } | |
240 | return 0; | |
241 | } | |
242 | ||
c906108c SS |
243 | /* ARGSUSED */ |
244 | void | |
fba45db2 | 245 | tty_command (char *file, int from_tty) |
c906108c SS |
246 | { |
247 | if (file == 0) | |
248 | error_no_arg ("terminal name for running target process"); | |
249 | ||
250 | inferior_io_terminal = savestring (file, strlen (file)); | |
251 | } | |
252 | ||
253 | static void | |
fba45db2 | 254 | run_command (char *args, int from_tty) |
c906108c SS |
255 | { |
256 | char *exec_file; | |
257 | ||
258 | dont_repeat (); | |
259 | ||
260 | if (inferior_pid != 0 && target_has_execution) | |
261 | { | |
adf40b2e JM |
262 | if (from_tty |
263 | && !query ("The program being debugged has been started already.\n\ | |
c906108c SS |
264 | Start it from the beginning? ")) |
265 | error ("Program not restarted."); | |
266 | target_kill (); | |
267 | #if defined(SOLIB_RESTART) | |
268 | SOLIB_RESTART (); | |
269 | #endif | |
270 | init_wait_for_inferior (); | |
271 | } | |
272 | ||
273 | clear_breakpoint_hit_counts (); | |
274 | ||
275 | exec_file = (char *) get_exec_file (0); | |
276 | ||
277 | /* Purge old solib objfiles. */ | |
278 | objfile_purge_solibs (); | |
279 | ||
280 | do_run_cleanups (NULL); | |
281 | ||
282 | /* The exec file is re-read every time we do a generic_mourn_inferior, so | |
283 | we just have to worry about the symbol file. */ | |
284 | reread_symbols (); | |
285 | ||
286 | /* We keep symbols from add-symbol-file, on the grounds that the | |
287 | user might want to add some symbols before running the program | |
288 | (right?). But sometimes (dynamic loading where the user manually | |
289 | introduces the new symbols with add-symbol-file), the code which | |
290 | the symbols describe does not persist between runs. Currently | |
291 | the user has to manually nuke all symbols between runs if they | |
292 | want them to go away (PR 2207). This is probably reasonable. */ | |
293 | ||
43ff13b4 | 294 | if (!args) |
6426a772 JM |
295 | { |
296 | if (event_loop_p && target_can_async_p ()) | |
297 | async_disable_stdin (); | |
298 | } | |
43ff13b4 | 299 | else |
c906108c | 300 | { |
43ff13b4 JM |
301 | int async_exec = strip_bg_char (&args); |
302 | ||
303 | /* If we get a request for running in the bg but the target | |
304 | doesn't support it, error out. */ | |
6426a772 | 305 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
306 | error ("Asynchronous execution not supported on this target."); |
307 | ||
308 | /* If we don't get a request of running in the bg, then we need | |
c5aa993b | 309 | to simulate synchronous (fg) execution. */ |
6426a772 | 310 | if (event_loop_p && !async_exec && target_can_async_p ()) |
43ff13b4 JM |
311 | { |
312 | /* Simulate synchronous execution */ | |
6426a772 | 313 | async_disable_stdin (); |
43ff13b4 JM |
314 | } |
315 | ||
316 | /* If there were other args, beside '&', process them. */ | |
317 | if (args) | |
318 | { | |
07091751 FN |
319 | char *old_args = set_inferior_args (xstrdup (args)); |
320 | xfree (old_args); | |
43ff13b4 | 321 | } |
c906108c SS |
322 | } |
323 | ||
324 | if (from_tty) | |
325 | { | |
8b93c638 JM |
326 | #ifdef UI_OUT |
327 | ui_out_field_string (uiout, NULL, "Starting program"); | |
328 | ui_out_text (uiout, ": "); | |
329 | if (exec_file) | |
330 | ui_out_field_string (uiout, "execfile", exec_file); | |
331 | ui_out_spaces (uiout, 1); | |
332 | ui_out_field_string (uiout, "infargs", inferior_args); | |
333 | ui_out_text (uiout, "\n"); | |
334 | ui_out_flush (uiout); | |
335 | #else | |
c5aa993b | 336 | puts_filtered ("Starting program: "); |
c906108c | 337 | if (exec_file) |
c5aa993b JM |
338 | puts_filtered (exec_file); |
339 | puts_filtered (" "); | |
340 | puts_filtered (inferior_args); | |
341 | puts_filtered ("\n"); | |
c906108c | 342 | gdb_flush (gdb_stdout); |
8b93c638 | 343 | #endif |
c906108c SS |
344 | } |
345 | ||
346 | target_create_inferior (exec_file, inferior_args, | |
347 | environ_vector (inferior_environ)); | |
348 | } | |
349 | ||
350 | ||
351 | static void | |
fba45db2 | 352 | run_no_args_command (char *args, int from_tty) |
c906108c | 353 | { |
07091751 FN |
354 | char *old_args = set_inferior_args (xstrdup ("")); |
355 | xfree (old_args); | |
c906108c | 356 | } |
c906108c | 357 | \f |
c5aa993b | 358 | |
c906108c | 359 | void |
fba45db2 | 360 | continue_command (char *proc_count_exp, int from_tty) |
c906108c | 361 | { |
c5aa993b | 362 | int async_exec = 0; |
c906108c SS |
363 | ERROR_NO_INFERIOR; |
364 | ||
43ff13b4 JM |
365 | /* Find out whether we must run in the background. */ |
366 | if (proc_count_exp != NULL) | |
367 | async_exec = strip_bg_char (&proc_count_exp); | |
368 | ||
369 | /* If we must run in the background, but the target can't do it, | |
370 | error out. */ | |
6426a772 | 371 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
372 | error ("Asynchronous execution not supported on this target."); |
373 | ||
374 | /* If we are not asked to run in the bg, then prepare to run in the | |
375 | foreground, synchronously. */ | |
6426a772 | 376 | if (event_loop_p && !async_exec && target_can_async_p ()) |
c5aa993b | 377 | { |
43ff13b4 | 378 | /* Simulate synchronous execution */ |
6426a772 | 379 | async_disable_stdin (); |
43ff13b4 | 380 | } |
c906108c | 381 | |
43ff13b4 JM |
382 | /* If have argument (besides '&'), set proceed count of breakpoint |
383 | we stopped at. */ | |
c906108c SS |
384 | if (proc_count_exp != NULL) |
385 | { | |
386 | bpstat bs = stop_bpstat; | |
387 | int num = bpstat_num (&bs); | |
388 | if (num == 0 && from_tty) | |
389 | { | |
390 | printf_filtered | |
391 | ("Not stopped at any breakpoint; argument ignored.\n"); | |
392 | } | |
393 | while (num != 0) | |
394 | { | |
395 | set_ignore_count (num, | |
bb518678 | 396 | parse_and_eval_long (proc_count_exp) - 1, |
c906108c SS |
397 | from_tty); |
398 | /* set_ignore_count prints a message ending with a period. | |
399 | So print two spaces before "Continuing.". */ | |
400 | if (from_tty) | |
401 | printf_filtered (" "); | |
402 | num = bpstat_num (&bs); | |
403 | } | |
404 | } | |
405 | ||
406 | if (from_tty) | |
407 | printf_filtered ("Continuing.\n"); | |
408 | ||
409 | clear_proceed_status (); | |
410 | ||
2acceee2 | 411 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); |
c906108c SS |
412 | } |
413 | \f | |
414 | /* Step until outside of current statement. */ | |
415 | ||
416 | /* ARGSUSED */ | |
417 | static void | |
fba45db2 | 418 | step_command (char *count_string, int from_tty) |
c906108c SS |
419 | { |
420 | step_1 (0, 0, count_string); | |
421 | } | |
422 | ||
423 | /* Likewise, but skip over subroutine calls as if single instructions. */ | |
424 | ||
425 | /* ARGSUSED */ | |
426 | static void | |
fba45db2 | 427 | next_command (char *count_string, int from_tty) |
c906108c SS |
428 | { |
429 | step_1 (1, 0, count_string); | |
430 | } | |
431 | ||
432 | /* Likewise, but step only one instruction. */ | |
433 | ||
434 | /* ARGSUSED */ | |
435 | void | |
fba45db2 | 436 | stepi_command (char *count_string, int from_tty) |
c906108c SS |
437 | { |
438 | step_1 (0, 1, count_string); | |
439 | } | |
440 | ||
441 | /* ARGSUSED */ | |
442 | void | |
fba45db2 | 443 | nexti_command (char *count_string, int from_tty) |
c906108c SS |
444 | { |
445 | step_1 (1, 1, count_string); | |
446 | } | |
447 | ||
74b7792f AC |
448 | static void |
449 | disable_longjmp_breakpoint_cleanup (void *ignore) | |
450 | { | |
451 | disable_longjmp_breakpoint (); | |
452 | } | |
453 | ||
c906108c | 454 | static void |
fba45db2 | 455 | step_1 (int skip_subroutines, int single_inst, char *count_string) |
c906108c SS |
456 | { |
457 | register int count = 1; | |
458 | struct frame_info *frame; | |
459 | struct cleanup *cleanups = 0; | |
43ff13b4 | 460 | int async_exec = 0; |
c5aa993b | 461 | |
c906108c | 462 | ERROR_NO_INFERIOR; |
43ff13b4 JM |
463 | |
464 | if (count_string) | |
465 | async_exec = strip_bg_char (&count_string); | |
c5aa993b | 466 | |
43ff13b4 JM |
467 | /* If we get a request for running in the bg but the target |
468 | doesn't support it, error out. */ | |
6426a772 | 469 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
470 | error ("Asynchronous execution not supported on this target."); |
471 | ||
472 | /* If we don't get a request of running in the bg, then we need | |
473 | to simulate synchronous (fg) execution. */ | |
6426a772 | 474 | if (event_loop_p && !async_exec && target_can_async_p ()) |
43ff13b4 JM |
475 | { |
476 | /* Simulate synchronous execution */ | |
6426a772 | 477 | async_disable_stdin (); |
43ff13b4 JM |
478 | } |
479 | ||
bb518678 | 480 | count = count_string ? parse_and_eval_long (count_string) : 1; |
c906108c | 481 | |
c5aa993b | 482 | if (!single_inst || skip_subroutines) /* leave si command alone */ |
c906108c | 483 | { |
c5aa993b | 484 | enable_longjmp_breakpoint (); |
c2d11a7d | 485 | if (!event_loop_p || !target_can_async_p ()) |
74b7792f | 486 | cleanups = make_cleanup (disable_longjmp_breakpoint_cleanup, 0 /*ignore*/); |
c2d11a7d | 487 | else |
74b7792f | 488 | make_exec_cleanup (disable_longjmp_breakpoint_cleanup, 0 /*ignore*/); |
c2d11a7d JM |
489 | } |
490 | ||
491 | /* In synchronous case, all is well, just use the regular for loop. */ | |
492 | if (!event_loop_p || !target_can_async_p ()) | |
493 | { | |
494 | for (; count > 0; count--) | |
495 | { | |
496 | clear_proceed_status (); | |
497 | ||
498 | frame = get_current_frame (); | |
499 | if (!frame) /* Avoid coredump here. Why tho? */ | |
500 | error ("No current frame"); | |
501 | step_frame_address = FRAME_FP (frame); | |
502 | step_sp = read_sp (); | |
503 | ||
504 | if (!single_inst) | |
505 | { | |
506 | find_pc_line_pc_range (stop_pc, &step_range_start, &step_range_end); | |
507 | if (step_range_end == 0) | |
508 | { | |
509 | char *name; | |
510 | if (find_pc_partial_function (stop_pc, &name, &step_range_start, | |
511 | &step_range_end) == 0) | |
512 | error ("Cannot find bounds of current function"); | |
513 | ||
514 | target_terminal_ours (); | |
515 | printf_filtered ("\ | |
516 | Single stepping until exit from function %s, \n\ | |
517 | which has no line number information.\n", name); | |
518 | } | |
519 | } | |
520 | else | |
521 | { | |
522 | /* Say we are stepping, but stop after one insn whatever it does. */ | |
523 | step_range_start = step_range_end = 1; | |
524 | if (!skip_subroutines) | |
525 | /* It is stepi. | |
526 | Don't step over function calls, not even to functions lacking | |
527 | line numbers. */ | |
5fbbeb29 | 528 | step_over_calls = STEP_OVER_NONE; |
c2d11a7d JM |
529 | } |
530 | ||
531 | if (skip_subroutines) | |
5fbbeb29 | 532 | step_over_calls = STEP_OVER_ALL; |
c2d11a7d JM |
533 | |
534 | step_multi = (count > 1); | |
535 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); | |
536 | ||
537 | if (!stop_step) | |
538 | break; | |
539 | ||
540 | /* FIXME: On nexti, this may have already been done (when we hit the | |
541 | step resume break, I think). Probably this should be moved to | |
542 | wait_for_inferior (near the top). */ | |
543 | #if defined (SHIFT_INST_REGS) | |
544 | SHIFT_INST_REGS (); | |
545 | #endif | |
546 | } | |
547 | ||
548 | if (!single_inst || skip_subroutines) | |
549 | do_cleanups (cleanups); | |
550 | return; | |
551 | } | |
552 | /* In case of asynchronous target things get complicated, do only | |
553 | one step for now, before returning control to the event loop. Let | |
554 | the continuation figure out how many other steps we need to do, | |
555 | and handle them one at the time, through step_once(). */ | |
556 | else | |
557 | { | |
558 | if (event_loop_p && target_can_async_p ()) | |
559 | step_once (skip_subroutines, single_inst, count); | |
c906108c | 560 | } |
c2d11a7d | 561 | } |
c906108c | 562 | |
c2d11a7d JM |
563 | /* Called after we are done with one step operation, to check whether |
564 | we need to step again, before we print the prompt and return control | |
565 | to the user. If count is > 1, we will need to do one more call to | |
566 | proceed(), via step_once(). Basically it is like step_once and | |
567 | step_1_continuation are co-recursive. */ | |
568 | static void | |
fba45db2 | 569 | step_1_continuation (struct continuation_arg *arg) |
c2d11a7d | 570 | { |
57e687d9 MS |
571 | int count; |
572 | int skip_subroutines; | |
573 | int single_inst; | |
574 | ||
575 | skip_subroutines = arg->data.integer; | |
576 | single_inst = arg->next->data.integer; | |
577 | count = arg->next->next->data.integer; | |
578 | ||
579 | if (stop_step) | |
580 | { | |
581 | /* FIXME: On nexti, this may have already been done (when we hit the | |
582 | step resume break, I think). Probably this should be moved to | |
583 | wait_for_inferior (near the top). */ | |
c2d11a7d | 584 | #if defined (SHIFT_INST_REGS) |
57e687d9 | 585 | SHIFT_INST_REGS (); |
c2d11a7d | 586 | #endif |
57e687d9 MS |
587 | step_once (skip_subroutines, single_inst, count - 1); |
588 | } | |
589 | else | |
590 | if (!single_inst || skip_subroutines) | |
591 | do_exec_cleanups (ALL_CLEANUPS); | |
c2d11a7d JM |
592 | } |
593 | ||
594 | /* Do just one step operation. If count >1 we will have to set up a | |
595 | continuation to be done after the target stops (after this one | |
596 | step). This is useful to implement the 'step n' kind of commands, in | |
597 | case of asynchronous targets. We had to split step_1 into two parts, | |
598 | one to be done before proceed() and one afterwards. This function is | |
599 | called in case of step n with n>1, after the first step operation has | |
600 | been completed.*/ | |
601 | static void | |
0d06e24b | 602 | step_once (int skip_subroutines, int single_inst, int count) |
c2d11a7d | 603 | { |
0d06e24b JM |
604 | struct continuation_arg *arg1; |
605 | struct continuation_arg *arg2; | |
606 | struct continuation_arg *arg3; | |
607 | struct frame_info *frame; | |
c2d11a7d JM |
608 | |
609 | if (count > 0) | |
c906108c SS |
610 | { |
611 | clear_proceed_status (); | |
612 | ||
613 | frame = get_current_frame (); | |
c5aa993b | 614 | if (!frame) /* Avoid coredump here. Why tho? */ |
c906108c SS |
615 | error ("No current frame"); |
616 | step_frame_address = FRAME_FP (frame); | |
617 | step_sp = read_sp (); | |
618 | ||
c5aa993b | 619 | if (!single_inst) |
c906108c SS |
620 | { |
621 | find_pc_line_pc_range (stop_pc, &step_range_start, &step_range_end); | |
5fbbeb29 CF |
622 | |
623 | /* If we have no line info, switch to stepi mode. */ | |
624 | if (step_range_end == 0 && step_stop_if_no_debug) | |
625 | { | |
626 | step_range_start = step_range_end = 1; | |
627 | } | |
628 | else if (step_range_end == 0) | |
c906108c SS |
629 | { |
630 | char *name; | |
631 | if (find_pc_partial_function (stop_pc, &name, &step_range_start, | |
632 | &step_range_end) == 0) | |
633 | error ("Cannot find bounds of current function"); | |
634 | ||
635 | target_terminal_ours (); | |
636 | printf_filtered ("\ | |
637 | Single stepping until exit from function %s, \n\ | |
638 | which has no line number information.\n", name); | |
639 | } | |
640 | } | |
641 | else | |
642 | { | |
643 | /* Say we are stepping, but stop after one insn whatever it does. */ | |
644 | step_range_start = step_range_end = 1; | |
645 | if (!skip_subroutines) | |
646 | /* It is stepi. | |
647 | Don't step over function calls, not even to functions lacking | |
648 | line numbers. */ | |
5fbbeb29 | 649 | step_over_calls = STEP_OVER_NONE; |
c906108c SS |
650 | } |
651 | ||
652 | if (skip_subroutines) | |
5fbbeb29 | 653 | step_over_calls = STEP_OVER_ALL; |
c906108c SS |
654 | |
655 | step_multi = (count > 1); | |
c2d11a7d JM |
656 | arg1 = |
657 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
658 | arg2 = | |
659 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
660 | arg3 = | |
661 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
662 | arg1->next = arg2; | |
57e687d9 | 663 | arg1->data.integer = skip_subroutines; |
c2d11a7d | 664 | arg2->next = arg3; |
57e687d9 | 665 | arg2->data.integer = single_inst; |
c2d11a7d | 666 | arg3->next = NULL; |
57e687d9 | 667 | arg3->data.integer = count; |
c2d11a7d | 668 | add_intermediate_continuation (step_1_continuation, arg1); |
2acceee2 | 669 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); |
c906108c | 670 | } |
c906108c | 671 | } |
c2d11a7d | 672 | |
c906108c SS |
673 | \f |
674 | /* Continue program at specified address. */ | |
675 | ||
676 | static void | |
fba45db2 | 677 | jump_command (char *arg, int from_tty) |
c906108c SS |
678 | { |
679 | register CORE_ADDR addr; | |
680 | struct symtabs_and_lines sals; | |
681 | struct symtab_and_line sal; | |
682 | struct symbol *fn; | |
683 | struct symbol *sfn; | |
43ff13b4 | 684 | int async_exec = 0; |
c5aa993b | 685 | |
c906108c SS |
686 | ERROR_NO_INFERIOR; |
687 | ||
43ff13b4 JM |
688 | /* Find out whether we must run in the background. */ |
689 | if (arg != NULL) | |
690 | async_exec = strip_bg_char (&arg); | |
691 | ||
692 | /* If we must run in the background, but the target can't do it, | |
693 | error out. */ | |
6426a772 | 694 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
695 | error ("Asynchronous execution not supported on this target."); |
696 | ||
697 | /* If we are not asked to run in the bg, then prepare to run in the | |
698 | foreground, synchronously. */ | |
6426a772 | 699 | if (event_loop_p && !async_exec && target_can_async_p ()) |
c5aa993b | 700 | { |
43ff13b4 | 701 | /* Simulate synchronous execution */ |
6426a772 | 702 | async_disable_stdin (); |
43ff13b4 JM |
703 | } |
704 | ||
c906108c SS |
705 | if (!arg) |
706 | error_no_arg ("starting address"); | |
707 | ||
708 | sals = decode_line_spec_1 (arg, 1); | |
709 | if (sals.nelts != 1) | |
710 | { | |
711 | error ("Unreasonable jump request"); | |
712 | } | |
713 | ||
714 | sal = sals.sals[0]; | |
b8c9b27d | 715 | xfree (sals.sals); |
c906108c SS |
716 | |
717 | if (sal.symtab == 0 && sal.pc == 0) | |
718 | error ("No source file has been specified."); | |
719 | ||
c5aa993b | 720 | resolve_sal_pc (&sal); /* May error out */ |
c906108c SS |
721 | |
722 | /* See if we are trying to jump to another function. */ | |
723 | fn = get_frame_function (get_current_frame ()); | |
724 | sfn = find_pc_function (sal.pc); | |
725 | if (fn != NULL && sfn != fn) | |
726 | { | |
727 | if (!query ("Line %d is not in `%s'. Jump anyway? ", sal.line, | |
728 | SYMBOL_SOURCE_NAME (fn))) | |
729 | { | |
730 | error ("Not confirmed."); | |
731 | /* NOTREACHED */ | |
732 | } | |
733 | } | |
734 | ||
c5aa993b | 735 | if (sfn != NULL) |
c906108c SS |
736 | { |
737 | fixup_symbol_section (sfn, 0); | |
c5aa993b | 738 | if (section_is_overlay (SYMBOL_BFD_SECTION (sfn)) && |
c906108c SS |
739 | !section_is_mapped (SYMBOL_BFD_SECTION (sfn))) |
740 | { | |
741 | if (!query ("WARNING!!! Destination is in unmapped overlay! Jump anyway? ")) | |
742 | { | |
743 | error ("Not confirmed."); | |
744 | /* NOTREACHED */ | |
745 | } | |
746 | } | |
747 | } | |
748 | ||
c906108c SS |
749 | addr = sal.pc; |
750 | ||
751 | if (from_tty) | |
752 | { | |
753 | printf_filtered ("Continuing at "); | |
754 | print_address_numeric (addr, 1, gdb_stdout); | |
755 | printf_filtered (".\n"); | |
756 | } | |
757 | ||
758 | clear_proceed_status (); | |
759 | proceed (addr, TARGET_SIGNAL_0, 0); | |
760 | } | |
c906108c | 761 | \f |
c5aa993b | 762 | |
c906108c SS |
763 | /* Go to line or address in current procedure */ |
764 | static void | |
fba45db2 | 765 | go_command (char *line_no, int from_tty) |
c906108c | 766 | { |
c5aa993b | 767 | if (line_no == (char *) NULL || !*line_no) |
b83266a0 | 768 | printf_filtered (GO_USAGE); |
c906108c SS |
769 | else |
770 | { | |
b83266a0 SS |
771 | tbreak_command (line_no, from_tty); |
772 | jump_command (line_no, from_tty); | |
c906108c SS |
773 | } |
774 | } | |
c906108c | 775 | \f |
c5aa993b | 776 | |
c906108c SS |
777 | /* Continue program giving it specified signal. */ |
778 | ||
779 | static void | |
fba45db2 | 780 | signal_command (char *signum_exp, int from_tty) |
c906108c SS |
781 | { |
782 | enum target_signal oursig; | |
783 | ||
784 | dont_repeat (); /* Too dangerous. */ | |
785 | ERROR_NO_INFERIOR; | |
786 | ||
787 | if (!signum_exp) | |
788 | error_no_arg ("signal number"); | |
789 | ||
790 | /* It would be even slicker to make signal names be valid expressions, | |
791 | (the type could be "enum $signal" or some such), then the user could | |
792 | assign them to convenience variables. */ | |
793 | oursig = target_signal_from_name (signum_exp); | |
794 | ||
795 | if (oursig == TARGET_SIGNAL_UNKNOWN) | |
796 | { | |
797 | /* No, try numeric. */ | |
bb518678 | 798 | int num = parse_and_eval_long (signum_exp); |
c906108c SS |
799 | |
800 | if (num == 0) | |
801 | oursig = TARGET_SIGNAL_0; | |
802 | else | |
803 | oursig = target_signal_from_command (num); | |
804 | } | |
805 | ||
806 | if (from_tty) | |
807 | { | |
808 | if (oursig == TARGET_SIGNAL_0) | |
809 | printf_filtered ("Continuing with no signal.\n"); | |
810 | else | |
811 | printf_filtered ("Continuing with signal %s.\n", | |
812 | target_signal_to_name (oursig)); | |
813 | } | |
814 | ||
815 | clear_proceed_status (); | |
816 | /* "signal 0" should not get stuck if we are stopped at a breakpoint. | |
817 | FIXME: Neither should "signal foo" but when I tried passing | |
818 | (CORE_ADDR)-1 unconditionally I got a testsuite failure which I haven't | |
819 | tried to track down yet. */ | |
2acceee2 | 820 | proceed (oursig == TARGET_SIGNAL_0 ? (CORE_ADDR) -1 : stop_pc, oursig, 0); |
c906108c SS |
821 | } |
822 | ||
823 | /* Call breakpoint_auto_delete on the current contents of the bpstat | |
824 | pointed to by arg (which is really a bpstat *). */ | |
825 | ||
c906108c | 826 | static void |
fba45db2 | 827 | breakpoint_auto_delete_contents (PTR arg) |
c906108c | 828 | { |
c5aa993b | 829 | breakpoint_auto_delete (*(bpstat *) arg); |
c906108c SS |
830 | } |
831 | ||
c906108c SS |
832 | |
833 | /* Execute a "stack dummy", a piece of code stored in the stack | |
834 | by the debugger to be executed in the inferior. | |
835 | ||
836 | To call: first, do PUSH_DUMMY_FRAME. | |
837 | Then push the contents of the dummy. It should end with a breakpoint insn. | |
838 | Then call here, passing address at which to start the dummy. | |
839 | ||
840 | The contents of all registers are saved before the dummy frame is popped | |
841 | and copied into the buffer BUFFER. | |
842 | ||
843 | The dummy's frame is automatically popped whenever that break is hit. | |
844 | If that is the first time the program stops, run_stack_dummy | |
845 | returns to its caller with that frame already gone and returns 0. | |
da59e081 JM |
846 | |
847 | Otherwise, run_stack-dummy returns a non-zero value. | |
848 | If the called function receives a random signal, we do not allow the user | |
849 | to continue executing it as this may not work. The dummy frame is poped | |
850 | and we return 1. | |
851 | If we hit a breakpoint, we leave the frame in place and return 2 (the frame | |
852 | will eventually be popped when we do hit the dummy end breakpoint). */ | |
c906108c | 853 | |
c906108c | 854 | int |
fba45db2 | 855 | run_stack_dummy (CORE_ADDR addr, char *buffer) |
c906108c SS |
856 | { |
857 | struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); | |
ed9a39eb | 858 | int saved_async = 0; |
c906108c SS |
859 | |
860 | /* Now proceed, having reached the desired place. */ | |
861 | clear_proceed_status (); | |
96baa820 | 862 | |
7a292a7a SS |
863 | if (CALL_DUMMY_BREAKPOINT_OFFSET_P) |
864 | { | |
865 | struct breakpoint *bpt; | |
866 | struct symtab_and_line sal; | |
c5aa993b JM |
867 | |
868 | INIT_SAL (&sal); /* initialize to zeroes */ | |
7a292a7a SS |
869 | if (CALL_DUMMY_LOCATION == AT_ENTRY_POINT) |
870 | { | |
871 | sal.pc = CALL_DUMMY_ADDRESS (); | |
872 | } | |
873 | else | |
874 | { | |
875 | sal.pc = addr - CALL_DUMMY_START_OFFSET + CALL_DUMMY_BREAKPOINT_OFFSET; | |
876 | } | |
877 | sal.section = find_pc_overlay (sal.pc); | |
c5aa993b | 878 | |
7a292a7a | 879 | /* Set up a FRAME for the dummy frame so we can pass it to |
c5aa993b JM |
880 | set_momentary_breakpoint. We need to give the breakpoint a |
881 | frame in case there is only one copy of the dummy (e.g. | |
882 | CALL_DUMMY_LOCATION == AFTER_TEXT_END). */ | |
7a292a7a SS |
883 | flush_cached_frames (); |
884 | set_current_frame (create_new_frame (read_fp (), sal.pc)); | |
c5aa993b | 885 | |
7a292a7a | 886 | /* If defined, CALL_DUMMY_BREAKPOINT_OFFSET is where we need to put |
c5aa993b JM |
887 | a breakpoint instruction. If not, the call dummy already has the |
888 | breakpoint instruction in it. | |
889 | ||
890 | addr is the address of the call dummy plus the CALL_DUMMY_START_OFFSET, | |
891 | so we need to subtract the CALL_DUMMY_START_OFFSET. */ | |
7a292a7a SS |
892 | bpt = set_momentary_breakpoint (sal, |
893 | get_current_frame (), | |
894 | bp_call_dummy); | |
895 | bpt->disposition = del; | |
c5aa993b | 896 | |
7a292a7a | 897 | /* If all error()s out of proceed ended up calling normal_stop (and |
c5aa993b JM |
898 | perhaps they should; it already does in the special case of error |
899 | out of resume()), then we wouldn't need this. */ | |
7a292a7a SS |
900 | make_cleanup (breakpoint_auto_delete_contents, &stop_bpstat); |
901 | } | |
c906108c SS |
902 | |
903 | disable_watchpoints_before_interactive_call_start (); | |
904 | proceed_to_finish = 1; /* We want stop_registers, please... */ | |
ed9a39eb JM |
905 | |
906 | if (target_can_async_p ()) | |
907 | saved_async = target_async_mask (0); | |
908 | ||
c906108c | 909 | proceed (addr, TARGET_SIGNAL_0, 0); |
ed9a39eb JM |
910 | |
911 | if (saved_async) | |
912 | target_async_mask (saved_async); | |
913 | ||
c906108c SS |
914 | enable_watchpoints_after_interactive_call_stop (); |
915 | ||
916 | discard_cleanups (old_cleanups); | |
917 | ||
242bfc55 | 918 | /* We can stop during an inferior call because a signal is received. */ |
da59e081 | 919 | if (stopped_by_random_signal) |
242bfc55 | 920 | return 1; |
da59e081 JM |
921 | |
922 | /* We may also stop prematurely because we hit a breakpoint in the | |
242bfc55 | 923 | called routine. */ |
c906108c | 924 | if (!stop_stack_dummy) |
da59e081 | 925 | return 2; |
c906108c | 926 | |
da59e081 | 927 | /* On normal return, the stack dummy has been popped already. */ |
c906108c | 928 | |
7a292a7a | 929 | memcpy (buffer, stop_registers, REGISTER_BYTES); |
c906108c SS |
930 | return 0; |
931 | } | |
932 | \f | |
933 | /* Proceed until we reach a different source line with pc greater than | |
934 | our current one or exit the function. We skip calls in both cases. | |
935 | ||
936 | Note that eventually this command should probably be changed so | |
937 | that only source lines are printed out when we hit the breakpoint | |
938 | we set. This may involve changes to wait_for_inferior and the | |
939 | proceed status code. */ | |
940 | ||
941 | /* ARGSUSED */ | |
942 | static void | |
fba45db2 | 943 | until_next_command (int from_tty) |
c906108c SS |
944 | { |
945 | struct frame_info *frame; | |
946 | CORE_ADDR pc; | |
947 | struct symbol *func; | |
948 | struct symtab_and_line sal; | |
c5aa993b | 949 | |
c906108c SS |
950 | clear_proceed_status (); |
951 | ||
952 | frame = get_current_frame (); | |
953 | ||
954 | /* Step until either exited from this function or greater | |
955 | than the current line (if in symbolic section) or pc (if | |
956 | not). */ | |
957 | ||
958 | pc = read_pc (); | |
959 | func = find_pc_function (pc); | |
c5aa993b | 960 | |
c906108c SS |
961 | if (!func) |
962 | { | |
963 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (pc); | |
c5aa993b | 964 | |
c906108c SS |
965 | if (msymbol == NULL) |
966 | error ("Execution is not within a known function."); | |
c5aa993b | 967 | |
c906108c SS |
968 | step_range_start = SYMBOL_VALUE_ADDRESS (msymbol); |
969 | step_range_end = pc; | |
970 | } | |
971 | else | |
972 | { | |
973 | sal = find_pc_line (pc, 0); | |
c5aa993b | 974 | |
c906108c SS |
975 | step_range_start = BLOCK_START (SYMBOL_BLOCK_VALUE (func)); |
976 | step_range_end = sal.end; | |
977 | } | |
c5aa993b | 978 | |
5fbbeb29 | 979 | step_over_calls = STEP_OVER_ALL; |
c906108c SS |
980 | step_frame_address = FRAME_FP (frame); |
981 | step_sp = read_sp (); | |
982 | ||
983 | step_multi = 0; /* Only one call to proceed */ | |
c5aa993b | 984 | |
2acceee2 | 985 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); |
c906108c SS |
986 | } |
987 | ||
c5aa993b | 988 | static void |
fba45db2 | 989 | until_command (char *arg, int from_tty) |
c906108c | 990 | { |
43ff13b4 JM |
991 | int async_exec = 0; |
992 | ||
c906108c SS |
993 | if (!target_has_execution) |
994 | error ("The program is not running."); | |
43ff13b4 JM |
995 | |
996 | /* Find out whether we must run in the background. */ | |
997 | if (arg != NULL) | |
998 | async_exec = strip_bg_char (&arg); | |
999 | ||
1000 | /* If we must run in the background, but the target can't do it, | |
1001 | error out. */ | |
6426a772 | 1002 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
1003 | error ("Asynchronous execution not supported on this target."); |
1004 | ||
1005 | /* If we are not asked to run in the bg, then prepare to run in the | |
1006 | foreground, synchronously. */ | |
6426a772 | 1007 | if (event_loop_p && !async_exec && target_can_async_p ()) |
c5aa993b | 1008 | { |
43ff13b4 | 1009 | /* Simulate synchronous execution */ |
6426a772 | 1010 | async_disable_stdin (); |
43ff13b4 JM |
1011 | } |
1012 | ||
c906108c SS |
1013 | if (arg) |
1014 | until_break_command (arg, from_tty); | |
1015 | else | |
1016 | until_next_command (from_tty); | |
1017 | } | |
1018 | \f | |
43ff13b4 | 1019 | |
11cf8741 JM |
1020 | /* Print the result of a function at the end of a 'finish' command. */ |
1021 | static void | |
1022 | print_return_value (int structure_return, struct type *value_type) | |
1023 | { | |
1024 | register value_ptr value; | |
8b93c638 JM |
1025 | #ifdef UI_OUT |
1026 | static struct ui_stream *stb = NULL; | |
1027 | #endif /* UI_OUT */ | |
11cf8741 JM |
1028 | |
1029 | if (!structure_return) | |
1030 | { | |
1031 | value = value_being_returned (value_type, stop_registers, structure_return); | |
8b93c638 JM |
1032 | #ifdef UI_OUT |
1033 | stb = ui_out_stream_new (uiout); | |
1034 | ui_out_text (uiout, "Value returned is "); | |
1035 | ui_out_field_fmt (uiout, "gdb-result-var", "$%d", record_latest_value (value)); | |
9549d9c1 | 1036 | ui_out_text (uiout, " = "); |
8b93c638 JM |
1037 | value_print (value, stb->stream, 0, Val_no_prettyprint); |
1038 | ui_out_field_stream (uiout, "return-value", stb); | |
1039 | ui_out_text (uiout, "\n"); | |
1040 | #else /* UI_OUT */ | |
11cf8741 JM |
1041 | printf_filtered ("Value returned is $%d = ", record_latest_value (value)); |
1042 | value_print (value, gdb_stdout, 0, Val_no_prettyprint); | |
1043 | printf_filtered ("\n"); | |
8b93c638 | 1044 | #endif /* UI_OUT */ |
11cf8741 JM |
1045 | } |
1046 | else | |
1047 | { | |
1048 | /* We cannot determine the contents of the structure because | |
1049 | it is on the stack, and we don't know where, since we did not | |
1050 | initiate the call, as opposed to the call_function_by_hand case */ | |
1051 | #ifdef VALUE_RETURNED_FROM_STACK | |
1052 | value = 0; | |
8b93c638 JM |
1053 | #ifdef UI_OUT |
1054 | ui_out_text (uiout, "Value returned has type: "); | |
1055 | ui_out_field_string (uiout, "return-type", TYPE_NAME (value_type)); | |
1056 | ui_out_text (uiout, "."); | |
1057 | ui_out_text (uiout, " Cannot determine contents\n"); | |
1058 | #else /* UI_OUT */ | |
11cf8741 JM |
1059 | printf_filtered ("Value returned has type: %s.", TYPE_NAME (value_type)); |
1060 | printf_filtered (" Cannot determine contents\n"); | |
8b93c638 | 1061 | #endif /* UI_OUT */ |
11cf8741 JM |
1062 | #else |
1063 | value = value_being_returned (value_type, stop_registers, structure_return); | |
8b93c638 JM |
1064 | #ifdef UI_OUT |
1065 | stb = ui_out_stream_new (uiout); | |
1066 | ui_out_text (uiout, "Value returned is "); | |
1067 | ui_out_field_fmt (uiout, "gdb-result-var", "$%d", record_latest_value (value)); | |
28ae27b1 | 1068 | ui_out_text (uiout, " = "); |
8b93c638 JM |
1069 | value_print (value, stb->stream, 0, Val_no_prettyprint); |
1070 | ui_out_field_stream (uiout, "return-value", stb); | |
1071 | ui_out_text (uiout, "\n"); | |
1072 | #else | |
11cf8741 JM |
1073 | printf_filtered ("Value returned is $%d = ", record_latest_value (value)); |
1074 | value_print (value, gdb_stdout, 0, Val_no_prettyprint); | |
1075 | printf_filtered ("\n"); | |
8b93c638 | 1076 | #endif |
11cf8741 JM |
1077 | #endif |
1078 | } | |
1079 | } | |
1080 | ||
43ff13b4 JM |
1081 | /* Stuff that needs to be done by the finish command after the target |
1082 | has stopped. In asynchronous mode, we wait for the target to stop in | |
1083 | the call to poll or select in the event loop, so it is impossible to | |
1084 | do all the stuff as part of the finish_command function itself. The | |
1085 | only chance we have to complete this command is in | |
1086 | fetch_inferior_event, which is called by the event loop as soon as it | |
1087 | detects that the target has stopped. This function is called via the | |
6953f3ba | 1088 | cmd_continuation pointer. */ |
43ff13b4 | 1089 | void |
fba45db2 | 1090 | finish_command_continuation (struct continuation_arg *arg) |
43ff13b4 JM |
1091 | { |
1092 | register struct symbol *function; | |
1093 | struct breakpoint *breakpoint; | |
0d06e24b | 1094 | struct cleanup *cleanups; |
c5aa993b | 1095 | |
57e687d9 MS |
1096 | breakpoint = (struct breakpoint *) arg->data.pointer; |
1097 | function = (struct symbol *) arg->next->data.pointer; | |
1098 | cleanups = (struct cleanup *) arg->next->next->data.pointer; | |
43ff13b4 | 1099 | |
c5aa993b | 1100 | if (bpstat_find_breakpoint (stop_bpstat, breakpoint) != NULL |
43ff13b4 JM |
1101 | && function != 0) |
1102 | { | |
1103 | struct type *value_type; | |
43ff13b4 JM |
1104 | CORE_ADDR funcaddr; |
1105 | int struct_return; | |
1106 | ||
1107 | value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (function)); | |
1108 | if (!value_type) | |
96baa820 | 1109 | internal_error ("finish_command: function has no target type"); |
c5aa993b | 1110 | |
43ff13b4 JM |
1111 | if (TYPE_CODE (value_type) == TYPE_CODE_VOID) |
1112 | { | |
0d06e24b | 1113 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
1114 | return; |
1115 | } | |
1116 | ||
1117 | funcaddr = BLOCK_START (SYMBOL_BLOCK_VALUE (function)); | |
1118 | ||
1119 | struct_return = using_struct_return (value_of_variable (function, NULL), | |
c5aa993b JM |
1120 | funcaddr, |
1121 | check_typedef (value_type), | |
11cf8741 | 1122 | BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function))); |
43ff13b4 | 1123 | |
11cf8741 | 1124 | print_return_value (struct_return, value_type); |
43ff13b4 | 1125 | } |
0d06e24b | 1126 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
1127 | } |
1128 | ||
c906108c SS |
1129 | /* "finish": Set a temporary breakpoint at the place |
1130 | the selected frame will return to, then continue. */ | |
1131 | ||
1132 | static void | |
fba45db2 | 1133 | finish_command (char *arg, int from_tty) |
c906108c SS |
1134 | { |
1135 | struct symtab_and_line sal; | |
1136 | register struct frame_info *frame; | |
1137 | register struct symbol *function; | |
1138 | struct breakpoint *breakpoint; | |
1139 | struct cleanup *old_chain; | |
0d06e24b | 1140 | struct continuation_arg *arg1, *arg2, *arg3; |
43ff13b4 JM |
1141 | |
1142 | int async_exec = 0; | |
1143 | ||
1144 | /* Find out whether we must run in the background. */ | |
1145 | if (arg != NULL) | |
1146 | async_exec = strip_bg_char (&arg); | |
1147 | ||
1148 | /* If we must run in the background, but the target can't do it, | |
1149 | error out. */ | |
6426a772 | 1150 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
1151 | error ("Asynchronous execution not supported on this target."); |
1152 | ||
1153 | /* If we are not asked to run in the bg, then prepare to run in the | |
1154 | foreground, synchronously. */ | |
6426a772 | 1155 | if (event_loop_p && !async_exec && target_can_async_p ()) |
c5aa993b | 1156 | { |
43ff13b4 | 1157 | /* Simulate synchronous execution */ |
6426a772 | 1158 | async_disable_stdin (); |
43ff13b4 | 1159 | } |
c906108c SS |
1160 | |
1161 | if (arg) | |
1162 | error ("The \"finish\" command does not take any arguments."); | |
1163 | if (!target_has_execution) | |
1164 | error ("The program is not running."); | |
1165 | if (selected_frame == NULL) | |
1166 | error ("No selected frame."); | |
1167 | ||
1168 | frame = get_prev_frame (selected_frame); | |
1169 | if (frame == 0) | |
1170 | error ("\"finish\" not meaningful in the outermost frame."); | |
1171 | ||
1172 | clear_proceed_status (); | |
1173 | ||
1174 | sal = find_pc_line (frame->pc, 0); | |
1175 | sal.pc = frame->pc; | |
1176 | ||
1177 | breakpoint = set_momentary_breakpoint (sal, frame, bp_finish); | |
1178 | ||
6426a772 | 1179 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 1180 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 1181 | else |
4d6140d9 | 1182 | old_chain = make_exec_cleanup_delete_breakpoint (breakpoint); |
c906108c SS |
1183 | |
1184 | /* Find the function we will return from. */ | |
1185 | ||
1186 | function = find_pc_function (selected_frame->pc); | |
1187 | ||
1188 | /* Print info on the selected frame, including level number | |
1189 | but not source. */ | |
1190 | if (from_tty) | |
1191 | { | |
1192 | printf_filtered ("Run till exit from "); | |
1193 | print_stack_frame (selected_frame, selected_frame_level, 0); | |
1194 | } | |
1195 | ||
43ff13b4 JM |
1196 | /* If running asynchronously and the target support asynchronous |
1197 | execution, set things up for the rest of the finish command to be | |
1198 | completed later on, when gdb has detected that the target has | |
1199 | stopped, in fetch_inferior_event. */ | |
6426a772 | 1200 | if (event_loop_p && target_can_async_p ()) |
43ff13b4 | 1201 | { |
c5aa993b | 1202 | arg1 = |
43ff13b4 | 1203 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); |
c5aa993b | 1204 | arg2 = |
43ff13b4 | 1205 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); |
0d06e24b JM |
1206 | arg3 = |
1207 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
43ff13b4 | 1208 | arg1->next = arg2; |
0d06e24b JM |
1209 | arg2->next = arg3; |
1210 | arg3->next = NULL; | |
57e687d9 MS |
1211 | arg1->data.pointer = breakpoint; |
1212 | arg2->data.pointer = function; | |
1213 | arg3->data.pointer = old_chain; | |
43ff13b4 JM |
1214 | add_continuation (finish_command_continuation, arg1); |
1215 | } | |
1216 | ||
c5aa993b | 1217 | proceed_to_finish = 1; /* We want stop_registers, please... */ |
2acceee2 | 1218 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); |
c906108c | 1219 | |
43ff13b4 JM |
1220 | /* Do this only if not running asynchronously or if the target |
1221 | cannot do async execution. Otherwise, complete this command when | |
c5aa993b | 1222 | the target actually stops, in fetch_inferior_event. */ |
6426a772 | 1223 | if (!event_loop_p || !target_can_async_p ()) |
c5aa993b JM |
1224 | { |
1225 | ||
1226 | /* Did we stop at our breakpoint? */ | |
1227 | if (bpstat_find_breakpoint (stop_bpstat, breakpoint) != NULL | |
1228 | && function != 0) | |
1229 | { | |
1230 | struct type *value_type; | |
c5aa993b JM |
1231 | CORE_ADDR funcaddr; |
1232 | int struct_return; | |
1233 | ||
1234 | value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (function)); | |
1235 | if (!value_type) | |
96baa820 | 1236 | internal_error ("finish_command: function has no target type"); |
c5aa993b JM |
1237 | |
1238 | /* FIXME: Shouldn't we do the cleanups before returning? */ | |
1239 | if (TYPE_CODE (value_type) == TYPE_CODE_VOID) | |
1240 | return; | |
1241 | ||
1242 | funcaddr = BLOCK_START (SYMBOL_BLOCK_VALUE (function)); | |
1243 | ||
1244 | struct_return = | |
1245 | using_struct_return (value_of_variable (function, NULL), | |
1246 | funcaddr, | |
1247 | check_typedef (value_type), | |
1248 | BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function))); | |
1249 | ||
11cf8741 | 1250 | print_return_value (struct_return, value_type); |
c5aa993b JM |
1251 | } |
1252 | do_cleanups (old_chain); | |
1253 | } | |
c906108c SS |
1254 | } |
1255 | \f | |
1256 | /* ARGSUSED */ | |
1257 | static void | |
fba45db2 | 1258 | program_info (char *args, int from_tty) |
c906108c SS |
1259 | { |
1260 | bpstat bs = stop_bpstat; | |
1261 | int num = bpstat_num (&bs); | |
c5aa993b | 1262 | |
c906108c SS |
1263 | if (!target_has_execution) |
1264 | { | |
1265 | printf_filtered ("The program being debugged is not being run.\n"); | |
1266 | return; | |
1267 | } | |
1268 | ||
1269 | target_files_info (); | |
1270 | printf_filtered ("Program stopped at %s.\n", | |
c5aa993b | 1271 | local_hex_string ((unsigned long) stop_pc)); |
c906108c SS |
1272 | if (stop_step) |
1273 | printf_filtered ("It stopped after being stepped.\n"); | |
1274 | else if (num != 0) | |
1275 | { | |
1276 | /* There may be several breakpoints in the same place, so this | |
c5aa993b | 1277 | isn't as strange as it seems. */ |
c906108c SS |
1278 | while (num != 0) |
1279 | { | |
1280 | if (num < 0) | |
1281 | { | |
1282 | printf_filtered ("It stopped at a breakpoint that has "); | |
1283 | printf_filtered ("since been deleted.\n"); | |
1284 | } | |
1285 | else | |
1286 | printf_filtered ("It stopped at breakpoint %d.\n", num); | |
1287 | num = bpstat_num (&bs); | |
1288 | } | |
1289 | } | |
1290 | else if (stop_signal != TARGET_SIGNAL_0) | |
1291 | { | |
1292 | printf_filtered ("It stopped with signal %s, %s.\n", | |
1293 | target_signal_to_name (stop_signal), | |
1294 | target_signal_to_string (stop_signal)); | |
1295 | } | |
1296 | ||
1297 | if (!from_tty) | |
1298 | { | |
1299 | printf_filtered ("Type \"info stack\" or \"info registers\" "); | |
1300 | printf_filtered ("for more information.\n"); | |
1301 | } | |
1302 | } | |
1303 | \f | |
1304 | static void | |
fba45db2 | 1305 | environment_info (char *var, int from_tty) |
c906108c SS |
1306 | { |
1307 | if (var) | |
1308 | { | |
1309 | register char *val = get_in_environ (inferior_environ, var); | |
1310 | if (val) | |
1311 | { | |
1312 | puts_filtered (var); | |
1313 | puts_filtered (" = "); | |
1314 | puts_filtered (val); | |
1315 | puts_filtered ("\n"); | |
1316 | } | |
1317 | else | |
1318 | { | |
1319 | puts_filtered ("Environment variable \""); | |
1320 | puts_filtered (var); | |
1321 | puts_filtered ("\" not defined.\n"); | |
1322 | } | |
1323 | } | |
1324 | else | |
1325 | { | |
1326 | register char **vector = environ_vector (inferior_environ); | |
1327 | while (*vector) | |
1328 | { | |
1329 | puts_filtered (*vector++); | |
1330 | puts_filtered ("\n"); | |
1331 | } | |
1332 | } | |
1333 | } | |
1334 | ||
1335 | static void | |
fba45db2 | 1336 | set_environment_command (char *arg, int from_tty) |
c906108c SS |
1337 | { |
1338 | register char *p, *val, *var; | |
1339 | int nullset = 0; | |
1340 | ||
1341 | if (arg == 0) | |
1342 | error_no_arg ("environment variable and value"); | |
1343 | ||
1344 | /* Find seperation between variable name and value */ | |
1345 | p = (char *) strchr (arg, '='); | |
1346 | val = (char *) strchr (arg, ' '); | |
1347 | ||
1348 | if (p != 0 && val != 0) | |
1349 | { | |
1350 | /* We have both a space and an equals. If the space is before the | |
c5aa993b JM |
1351 | equals, walk forward over the spaces til we see a nonspace |
1352 | (possibly the equals). */ | |
c906108c SS |
1353 | if (p > val) |
1354 | while (*val == ' ') | |
1355 | val++; | |
1356 | ||
1357 | /* Now if the = is after the char following the spaces, | |
c5aa993b | 1358 | take the char following the spaces. */ |
c906108c SS |
1359 | if (p > val) |
1360 | p = val - 1; | |
1361 | } | |
1362 | else if (val != 0 && p == 0) | |
1363 | p = val; | |
1364 | ||
1365 | if (p == arg) | |
1366 | error_no_arg ("environment variable to set"); | |
1367 | ||
1368 | if (p == 0 || p[1] == 0) | |
1369 | { | |
1370 | nullset = 1; | |
1371 | if (p == 0) | |
1372 | p = arg + strlen (arg); /* So that savestring below will work */ | |
1373 | } | |
1374 | else | |
1375 | { | |
1376 | /* Not setting variable value to null */ | |
1377 | val = p + 1; | |
1378 | while (*val == ' ' || *val == '\t') | |
1379 | val++; | |
1380 | } | |
1381 | ||
c5aa993b JM |
1382 | while (p != arg && (p[-1] == ' ' || p[-1] == '\t')) |
1383 | p--; | |
c906108c SS |
1384 | |
1385 | var = savestring (arg, p - arg); | |
1386 | if (nullset) | |
1387 | { | |
1388 | printf_filtered ("Setting environment variable "); | |
1389 | printf_filtered ("\"%s\" to null value.\n", var); | |
1390 | set_in_environ (inferior_environ, var, ""); | |
1391 | } | |
1392 | else | |
1393 | set_in_environ (inferior_environ, var, val); | |
b8c9b27d | 1394 | xfree (var); |
c906108c SS |
1395 | } |
1396 | ||
1397 | static void | |
fba45db2 | 1398 | unset_environment_command (char *var, int from_tty) |
c906108c SS |
1399 | { |
1400 | if (var == 0) | |
1401 | { | |
1402 | /* If there is no argument, delete all environment variables. | |
c5aa993b | 1403 | Ask for confirmation if reading from the terminal. */ |
c906108c SS |
1404 | if (!from_tty || query ("Delete all environment variables? ")) |
1405 | { | |
1406 | free_environ (inferior_environ); | |
1407 | inferior_environ = make_environ (); | |
1408 | } | |
1409 | } | |
1410 | else | |
1411 | unset_in_environ (inferior_environ, var); | |
1412 | } | |
1413 | ||
1414 | /* Handle the execution path (PATH variable) */ | |
1415 | ||
1416 | static const char path_var_name[] = "PATH"; | |
1417 | ||
1418 | /* ARGSUSED */ | |
1419 | static void | |
fba45db2 | 1420 | path_info (char *args, int from_tty) |
c906108c SS |
1421 | { |
1422 | puts_filtered ("Executable and object file path: "); | |
1423 | puts_filtered (get_in_environ (inferior_environ, path_var_name)); | |
1424 | puts_filtered ("\n"); | |
1425 | } | |
1426 | ||
1427 | /* Add zero or more directories to the front of the execution path. */ | |
1428 | ||
1429 | static void | |
fba45db2 | 1430 | path_command (char *dirname, int from_tty) |
c906108c SS |
1431 | { |
1432 | char *exec_path; | |
1433 | char *env; | |
1434 | dont_repeat (); | |
1435 | env = get_in_environ (inferior_environ, path_var_name); | |
1436 | /* Can be null if path is not set */ | |
1437 | if (!env) | |
1438 | env = ""; | |
4fcf66da | 1439 | exec_path = xstrdup (env); |
c906108c SS |
1440 | mod_path (dirname, &exec_path); |
1441 | set_in_environ (inferior_environ, path_var_name, exec_path); | |
b8c9b27d | 1442 | xfree (exec_path); |
c906108c | 1443 | if (from_tty) |
c5aa993b | 1444 | path_info ((char *) NULL, from_tty); |
c906108c | 1445 | } |
c906108c | 1446 | \f |
c5aa993b | 1447 | |
c906108c SS |
1448 | #ifdef REGISTER_NAMES |
1449 | char *gdb_register_names[] = REGISTER_NAMES; | |
1450 | #endif | |
1451 | /* Print out the machine register regnum. If regnum is -1, | |
1452 | print all registers (fpregs == 1) or all non-float registers | |
1453 | (fpregs == 0). | |
1454 | ||
1455 | For most machines, having all_registers_info() print the | |
1456 | register(s) one per line is good enough. If a different format | |
1457 | is required, (eg, for MIPS or Pyramid 90x, which both have | |
1458 | lots of regs), or there is an existing convention for showing | |
1459 | all the registers, define the macro DO_REGISTERS_INFO(regnum, fp) | |
c5aa993b | 1460 | to provide that format. */ |
c906108c | 1461 | |
666e11c5 | 1462 | void |
fba45db2 | 1463 | do_registers_info (int regnum, int fpregs) |
c906108c SS |
1464 | { |
1465 | register int i; | |
1466 | int numregs = ARCH_NUM_REGS; | |
1467 | ||
1468 | for (i = 0; i < numregs; i++) | |
1469 | { | |
1470 | char raw_buffer[MAX_REGISTER_RAW_SIZE]; | |
1471 | char virtual_buffer[MAX_REGISTER_VIRTUAL_SIZE]; | |
1472 | ||
1473 | /* Decide between printing all regs, nonfloat regs, or specific reg. */ | |
c5aa993b JM |
1474 | if (regnum == -1) |
1475 | { | |
1476 | if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT && !fpregs) | |
1477 | continue; | |
1478 | } | |
1479 | else | |
1480 | { | |
1481 | if (i != regnum) | |
1482 | continue; | |
1483 | } | |
c906108c SS |
1484 | |
1485 | /* If the register name is empty, it is undefined for this | |
c5aa993b | 1486 | processor, so don't display anything. */ |
c906108c SS |
1487 | if (REGISTER_NAME (i) == NULL || *(REGISTER_NAME (i)) == '\0') |
1488 | continue; | |
1489 | ||
1490 | fputs_filtered (REGISTER_NAME (i), gdb_stdout); | |
1491 | print_spaces_filtered (15 - strlen (REGISTER_NAME (i)), gdb_stdout); | |
1492 | ||
1493 | /* Get the data in raw format. */ | |
1494 | if (read_relative_register_raw_bytes (i, raw_buffer)) | |
1495 | { | |
1496 | printf_filtered ("*value not available*\n"); | |
1497 | continue; | |
1498 | } | |
1499 | ||
1500 | /* Convert raw data to virtual format if necessary. */ | |
c906108c SS |
1501 | if (REGISTER_CONVERTIBLE (i)) |
1502 | { | |
1503 | REGISTER_CONVERT_TO_VIRTUAL (i, REGISTER_VIRTUAL_TYPE (i), | |
1504 | raw_buffer, virtual_buffer); | |
1505 | } | |
1506 | else | |
392a587b JM |
1507 | { |
1508 | memcpy (virtual_buffer, raw_buffer, | |
1509 | REGISTER_VIRTUAL_SIZE (i)); | |
1510 | } | |
c906108c SS |
1511 | |
1512 | /* If virtual format is floating, print it that way, and in raw hex. */ | |
1513 | if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT) | |
1514 | { | |
1515 | register int j; | |
1516 | ||
1517 | #ifdef INVALID_FLOAT | |
1518 | if (INVALID_FLOAT (virtual_buffer, REGISTER_VIRTUAL_SIZE (i))) | |
1519 | printf_filtered ("<invalid float>"); | |
1520 | else | |
1521 | #endif | |
1522 | val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0, | |
1523 | gdb_stdout, 0, 1, 0, Val_pretty_default); | |
1524 | ||
1525 | printf_filtered ("\t(raw 0x"); | |
1526 | for (j = 0; j < REGISTER_RAW_SIZE (i); j++) | |
1527 | { | |
1528 | register int idx = TARGET_BYTE_ORDER == BIG_ENDIAN ? j | |
c5aa993b JM |
1529 | : REGISTER_RAW_SIZE (i) - 1 - j; |
1530 | printf_filtered ("%02x", (unsigned char) raw_buffer[idx]); | |
c906108c SS |
1531 | } |
1532 | printf_filtered (")"); | |
1533 | } | |
1534 | ||
1535 | /* FIXME! val_print probably can handle all of these cases now... */ | |
1536 | ||
1537 | /* Else if virtual format is too long for printf, | |
c5aa993b | 1538 | print in hex a byte at a time. */ |
c906108c SS |
1539 | else if (REGISTER_VIRTUAL_SIZE (i) > (int) sizeof (long)) |
1540 | { | |
1541 | register int j; | |
1542 | printf_filtered ("0x"); | |
1543 | for (j = 0; j < REGISTER_VIRTUAL_SIZE (i); j++) | |
c5aa993b | 1544 | printf_filtered ("%02x", (unsigned char) virtual_buffer[j]); |
c906108c SS |
1545 | } |
1546 | /* Else print as integer in hex and in decimal. */ | |
1547 | else | |
1548 | { | |
1549 | val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0, | |
1550 | gdb_stdout, 'x', 1, 0, Val_pretty_default); | |
1551 | printf_filtered ("\t"); | |
1552 | val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0, | |
c5aa993b | 1553 | gdb_stdout, 0, 1, 0, Val_pretty_default); |
c906108c SS |
1554 | } |
1555 | ||
1556 | /* The SPARC wants to print even-numbered float regs as doubles | |
c5aa993b | 1557 | in addition to printing them as floats. */ |
c906108c SS |
1558 | #ifdef PRINT_REGISTER_HOOK |
1559 | PRINT_REGISTER_HOOK (i); | |
1560 | #endif | |
1561 | ||
1562 | printf_filtered ("\n"); | |
1563 | } | |
1564 | } | |
c906108c | 1565 | |
c906108c | 1566 | void |
fba45db2 | 1567 | registers_info (char *addr_exp, int fpregs) |
c906108c SS |
1568 | { |
1569 | int regnum, numregs; | |
1570 | register char *end; | |
1571 | ||
1572 | if (!target_has_registers) | |
1573 | error ("The program has no registers now."); | |
1574 | if (selected_frame == NULL) | |
1575 | error ("No selected frame."); | |
1576 | ||
1577 | if (!addr_exp) | |
1578 | { | |
c5aa993b | 1579 | DO_REGISTERS_INFO (-1, fpregs); |
c906108c SS |
1580 | return; |
1581 | } | |
1582 | ||
1583 | do | |
c5aa993b | 1584 | { |
c906108c SS |
1585 | if (addr_exp[0] == '$') |
1586 | addr_exp++; | |
1587 | end = addr_exp; | |
1588 | while (*end != '\0' && *end != ' ' && *end != '\t') | |
1589 | ++end; | |
1590 | numregs = ARCH_NUM_REGS; | |
1591 | ||
1592 | regnum = target_map_name_to_register (addr_exp, end - addr_exp); | |
c5aa993b | 1593 | if (regnum >= 0) |
c906108c SS |
1594 | goto found; |
1595 | ||
1596 | regnum = numregs; | |
1597 | ||
1598 | if (*addr_exp >= '0' && *addr_exp <= '9') | |
c5aa993b JM |
1599 | regnum = atoi (addr_exp); /* Take a number */ |
1600 | if (regnum >= numregs) /* Bad name, or bad number */ | |
c906108c SS |
1601 | error ("%.*s: invalid register", end - addr_exp, addr_exp); |
1602 | ||
c5aa993b JM |
1603 | found: |
1604 | DO_REGISTERS_INFO (regnum, fpregs); | |
c906108c SS |
1605 | |
1606 | addr_exp = end; | |
1607 | while (*addr_exp == ' ' || *addr_exp == '\t') | |
1608 | ++addr_exp; | |
c5aa993b JM |
1609 | } |
1610 | while (*addr_exp != '\0'); | |
c906108c SS |
1611 | } |
1612 | ||
1613 | void | |
fba45db2 | 1614 | all_registers_info (char *addr_exp, int from_tty) |
c906108c SS |
1615 | { |
1616 | registers_info (addr_exp, 1); | |
1617 | } | |
1618 | ||
1619 | void | |
fba45db2 | 1620 | nofp_registers_info (char *addr_exp, int from_tty) |
c906108c SS |
1621 | { |
1622 | registers_info (addr_exp, 0); | |
1623 | } | |
c906108c | 1624 | \f |
c5aa993b | 1625 | |
c906108c SS |
1626 | /* |
1627 | * TODO: | |
1628 | * Should save/restore the tty state since it might be that the | |
1629 | * program to be debugged was started on this tty and it wants | |
1630 | * the tty in some state other than what we want. If it's running | |
1631 | * on another terminal or without a terminal, then saving and | |
1632 | * restoring the tty state is a harmless no-op. | |
1633 | * This only needs to be done if we are attaching to a process. | |
1634 | */ | |
1635 | ||
1636 | /* | |
1637 | attach_command -- | |
1638 | takes a program started up outside of gdb and ``attaches'' to it. | |
1639 | This stops it cold in its tracks and allows us to start debugging it. | |
1640 | and wait for the trace-trap that results from attaching. */ | |
1641 | ||
1642 | void | |
fba45db2 | 1643 | attach_command (char *args, int from_tty) |
c906108c SS |
1644 | { |
1645 | #ifdef SOLIB_ADD | |
1646 | extern int auto_solib_add; | |
1647 | #endif | |
1648 | ||
c5aa993b JM |
1649 | char *exec_file; |
1650 | char *full_exec_path = NULL; | |
c906108c | 1651 | |
c5aa993b | 1652 | dont_repeat (); /* Not for the faint of heart */ |
c906108c SS |
1653 | |
1654 | if (target_has_execution) | |
1655 | { | |
1656 | if (query ("A program is being debugged already. Kill it? ")) | |
1657 | target_kill (); | |
1658 | else | |
1659 | error ("Not killed."); | |
1660 | } | |
1661 | ||
1662 | target_attach (args, from_tty); | |
1663 | ||
1664 | /* Set up the "saved terminal modes" of the inferior | |
1665 | based on what modes we are starting it with. */ | |
1666 | target_terminal_init (); | |
1667 | ||
1668 | /* Install inferior's terminal modes. */ | |
1669 | target_terminal_inferior (); | |
1670 | ||
1671 | /* Set up execution context to know that we should return from | |
1672 | wait_for_inferior as soon as the target reports a stop. */ | |
1673 | init_wait_for_inferior (); | |
1674 | clear_proceed_status (); | |
c906108c SS |
1675 | |
1676 | /* No traps are generated when attaching to inferior under Mach 3 | |
1677 | or GNU hurd. */ | |
1678 | #ifndef ATTACH_NO_WAIT | |
00373e55 | 1679 | stop_soon_quietly = 1; |
c906108c SS |
1680 | wait_for_inferior (); |
1681 | #endif | |
1682 | ||
1683 | /* | |
1684 | * If no exec file is yet known, try to determine it from the | |
1685 | * process itself. | |
1686 | */ | |
1687 | exec_file = (char *) get_exec_file (0); | |
c5aa993b JM |
1688 | if (!exec_file) |
1689 | { | |
1690 | exec_file = target_pid_to_exec_file (inferior_pid); | |
1691 | if (exec_file) | |
1692 | { | |
1693 | /* It's possible we don't have a full path, but rather just a | |
1694 | filename. Some targets, such as HP-UX, don't provide the | |
1695 | full path, sigh. | |
1696 | ||
1697 | Attempt to qualify the filename against the source path. | |
1698 | (If that fails, we'll just fall back on the original | |
1699 | filename. Not much more we can do...) | |
1700 | */ | |
1701 | if (!source_full_path_of (exec_file, &full_exec_path)) | |
1702 | full_exec_path = savestring (exec_file, strlen (exec_file)); | |
1703 | ||
1704 | exec_file_attach (full_exec_path, from_tty); | |
1adeb98a | 1705 | symbol_file_add_main (full_exec_path, from_tty); |
c5aa993b | 1706 | } |
c906108c | 1707 | } |
c906108c SS |
1708 | |
1709 | #ifdef SOLIB_ADD | |
1710 | if (auto_solib_add) | |
1711 | { | |
1712 | /* Add shared library symbols from the newly attached process, if any. */ | |
c5aa993b | 1713 | SOLIB_ADD ((char *) 0, from_tty, ¤t_target); |
c906108c SS |
1714 | re_enable_breakpoints_in_shlibs (); |
1715 | } | |
1716 | #endif | |
1717 | ||
1718 | /* Take any necessary post-attaching actions for this platform. | |
c5aa993b | 1719 | */ |
c906108c SS |
1720 | target_post_attach (inferior_pid); |
1721 | ||
1722 | normal_stop (); | |
6426a772 JM |
1723 | |
1724 | if (attach_hook) | |
1725 | attach_hook (); | |
c906108c SS |
1726 | } |
1727 | ||
1728 | /* | |
1729 | * detach_command -- | |
1730 | * takes a program previously attached to and detaches it. | |
1731 | * The program resumes execution and will no longer stop | |
1732 | * on signals, etc. We better not have left any breakpoints | |
1733 | * in the program or it'll die when it hits one. For this | |
1734 | * to work, it may be necessary for the process to have been | |
1735 | * previously attached. It *might* work if the program was | |
1736 | * started via the normal ptrace (PTRACE_TRACEME). | |
1737 | */ | |
1738 | ||
1739 | static void | |
fba45db2 | 1740 | detach_command (char *args, int from_tty) |
c906108c | 1741 | { |
c5aa993b | 1742 | dont_repeat (); /* Not for the faint of heart */ |
c906108c SS |
1743 | target_detach (args, from_tty); |
1744 | #if defined(SOLIB_RESTART) | |
1745 | SOLIB_RESTART (); | |
1746 | #endif | |
6426a772 JM |
1747 | if (detach_hook) |
1748 | detach_hook (); | |
c906108c SS |
1749 | } |
1750 | ||
43ff13b4 JM |
1751 | /* Stop the execution of the target while running in async mode, in |
1752 | the backgound. */ | |
8b93c638 JM |
1753 | #ifdef UI_OUT |
1754 | void | |
fba45db2 | 1755 | interrupt_target_command_wrapper (char *args, int from_tty) |
8b93c638 JM |
1756 | { |
1757 | interrupt_target_command (args, from_tty); | |
1758 | } | |
1759 | #endif | |
43ff13b4 | 1760 | static void |
fba45db2 | 1761 | interrupt_target_command (char *args, int from_tty) |
43ff13b4 | 1762 | { |
6426a772 | 1763 | if (event_loop_p && target_can_async_p ()) |
43ff13b4 | 1764 | { |
c5aa993b | 1765 | dont_repeat (); /* Not for the faint of heart */ |
43ff13b4 JM |
1766 | target_stop (); |
1767 | } | |
1768 | } | |
1769 | ||
c906108c SS |
1770 | /* ARGSUSED */ |
1771 | static void | |
fba45db2 | 1772 | float_info (char *addr_exp, int from_tty) |
c906108c SS |
1773 | { |
1774 | #ifdef FLOAT_INFO | |
1775 | FLOAT_INFO; | |
1776 | #else | |
1777 | printf_filtered ("No floating point info available for this processor.\n"); | |
1778 | #endif | |
1779 | } | |
1780 | \f | |
1781 | /* ARGSUSED */ | |
1782 | static void | |
fba45db2 | 1783 | unset_command (char *args, int from_tty) |
c906108c SS |
1784 | { |
1785 | printf_filtered ("\"unset\" must be followed by the name of "); | |
1786 | printf_filtered ("an unset subcommand.\n"); | |
1787 | help_list (unsetlist, "unset ", -1, gdb_stdout); | |
1788 | } | |
1789 | ||
1790 | void | |
fba45db2 | 1791 | _initialize_infcmd (void) |
c906108c SS |
1792 | { |
1793 | struct cmd_list_element *c; | |
c5aa993b | 1794 | |
c906108c SS |
1795 | add_com ("tty", class_run, tty_command, |
1796 | "Set terminal for future runs of program being debugged."); | |
1797 | ||
1798 | add_show_from_set | |
c5aa993b JM |
1799 | (add_set_cmd ("args", class_run, var_string_noescape, |
1800 | (char *) &inferior_args, | |
1801 | "Set argument list to give program being debugged when it is started.\n\ | |
c906108c SS |
1802 | Follow this command with any number of args, to be passed to the program.", |
1803 | &setlist), | |
1804 | &showlist); | |
1805 | ||
1806 | c = add_cmd | |
1807 | ("environment", no_class, environment_info, | |
1808 | "The environment to give the program, or one variable's value.\n\ | |
1809 | With an argument VAR, prints the value of environment variable VAR to\n\ | |
1810 | give the program being debugged. With no arguments, prints the entire\n\ | |
1811 | environment to be given to the program.", &showlist); | |
1812 | c->completer = noop_completer; | |
1813 | ||
1814 | add_prefix_cmd ("unset", no_class, unset_command, | |
1815 | "Complement to certain \"set\" commands", | |
1816 | &unsetlist, "unset ", 0, &cmdlist); | |
c5aa993b | 1817 | |
c906108c | 1818 | c = add_cmd ("environment", class_run, unset_environment_command, |
c5aa993b | 1819 | "Cancel environment variable VAR for the program.\n\ |
c906108c | 1820 | This does not affect the program until the next \"run\" command.", |
c5aa993b | 1821 | &unsetlist); |
c906108c SS |
1822 | c->completer = noop_completer; |
1823 | ||
1824 | c = add_cmd ("environment", class_run, set_environment_command, | |
1825 | "Set environment variable value to give the program.\n\ | |
1826 | Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\ | |
1827 | VALUES of environment variables are uninterpreted strings.\n\ | |
1828 | This does not affect the program until the next \"run\" command.", | |
c5aa993b | 1829 | &setlist); |
c906108c | 1830 | c->completer = noop_completer; |
c5aa993b | 1831 | |
c906108c | 1832 | add_com ("path", class_files, path_command, |
c5aa993b | 1833 | "Add directory DIR(s) to beginning of search path for object files.\n\ |
c906108c SS |
1834 | $cwd in the path means the current working directory.\n\ |
1835 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
1836 | directories, separated by colons. These directories are searched to find\n\ | |
1837 | fully linked executable files and separately compiled object files as needed."); | |
1838 | ||
1839 | c = add_cmd ("paths", no_class, path_info, | |
c5aa993b | 1840 | "Current search path for finding object files.\n\ |
c906108c SS |
1841 | $cwd in the path means the current working directory.\n\ |
1842 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
1843 | directories, separated by colons. These directories are searched to find\n\ | |
1844 | fully linked executable files and separately compiled object files as needed.", | |
1845 | &showlist); | |
1846 | c->completer = noop_completer; | |
1847 | ||
c5aa993b JM |
1848 | add_com ("attach", class_run, attach_command, |
1849 | "Attach to a process or file outside of GDB.\n\ | |
c906108c SS |
1850 | This command attaches to another target, of the same type as your last\n\ |
1851 | \"target\" command (\"info files\" will show your target stack).\n\ | |
1852 | The command may take as argument a process id or a device file.\n\ | |
1853 | For a process id, you must have permission to send the process a signal,\n\ | |
1854 | and it must have the same effective uid as the debugger.\n\ | |
1855 | When using \"attach\" with a process id, the debugger finds the\n\ | |
1856 | program running in the process, looking first in the current working\n\ | |
1857 | directory, or (if not found there) using the source file search path\n\ | |
1858 | (see the \"directory\" command). You can also use the \"file\" command\n\ | |
1859 | to specify the program, and to load its symbol table."); | |
1860 | ||
1861 | add_com ("detach", class_run, detach_command, | |
1862 | "Detach a process or file previously attached.\n\ | |
1863 | If a process, it is no longer traced, and it continues its execution. If\n\ | |
1864 | you were debugging a file, the file is closed and gdb no longer accesses it."); | |
1865 | ||
1866 | add_com ("signal", class_run, signal_command, | |
1867 | "Continue program giving it signal specified by the argument.\n\ | |
1868 | An argument of \"0\" means continue program without giving it a signal."); | |
1869 | ||
1870 | add_com ("stepi", class_run, stepi_command, | |
1871 | "Step one instruction exactly.\n\ | |
1872 | Argument N means do this N times (or till program stops for another reason)."); | |
1873 | add_com_alias ("si", "stepi", class_alias, 0); | |
1874 | ||
1875 | add_com ("nexti", class_run, nexti_command, | |
1876 | "Step one instruction, but proceed through subroutine calls.\n\ | |
1877 | Argument N means do this N times (or till program stops for another reason)."); | |
1878 | add_com_alias ("ni", "nexti", class_alias, 0); | |
1879 | ||
1880 | add_com ("finish", class_run, finish_command, | |
1881 | "Execute until selected stack frame returns.\n\ | |
1882 | Upon return, the value returned is printed and put in the value history."); | |
1883 | ||
1884 | add_com ("next", class_run, next_command, | |
1885 | "Step program, proceeding through subroutine calls.\n\ | |
1886 | Like the \"step\" command as long as subroutine calls do not happen;\n\ | |
1887 | when they do, the call is treated as one instruction.\n\ | |
1888 | Argument N means do this N times (or till program stops for another reason)."); | |
1889 | add_com_alias ("n", "next", class_run, 1); | |
1890 | if (xdb_commands) | |
c5aa993b | 1891 | add_com_alias ("S", "next", class_run, 1); |
c906108c SS |
1892 | |
1893 | add_com ("step", class_run, step_command, | |
1894 | "Step program until it reaches a different source line.\n\ | |
1895 | Argument N means do this N times (or till program stops for another reason)."); | |
1896 | add_com_alias ("s", "step", class_run, 1); | |
1897 | ||
1898 | add_com ("until", class_run, until_command, | |
c5aa993b | 1899 | "Execute until the program reaches a source line greater than the current\n\ |
c906108c SS |
1900 | or a specified line or address or function (same args as break command).\n\ |
1901 | Execution will also stop upon exit from the current stack frame."); | |
1902 | add_com_alias ("u", "until", class_run, 1); | |
c5aa993b | 1903 | |
c906108c SS |
1904 | add_com ("jump", class_run, jump_command, |
1905 | "Continue program being debugged at specified line or address.\n\ | |
1906 | Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\ | |
1907 | for an address to start at."); | |
1908 | ||
b83266a0 SS |
1909 | if (xdb_commands) |
1910 | add_com ("go", class_run, go_command, | |
1911 | "Usage: go <location>\n\ | |
c906108c SS |
1912 | Continue program being debugged, stopping at specified line or \n\ |
1913 | address.\n\ | |
1914 | Give as argument either LINENUM or *ADDR, where ADDR is an \n\ | |
1915 | expression for an address to start at.\n\ | |
1916 | This command is a combination of tbreak and jump."); | |
b83266a0 | 1917 | |
c906108c | 1918 | if (xdb_commands) |
c5aa993b | 1919 | add_com_alias ("g", "go", class_run, 1); |
c906108c SS |
1920 | |
1921 | add_com ("continue", class_run, continue_command, | |
1922 | "Continue program being debugged, after signal or breakpoint.\n\ | |
1923 | If proceeding from breakpoint, a number N may be used as an argument,\n\ | |
1924 | which means to set the ignore count of that breakpoint to N - 1 (so that\n\ | |
1925 | the breakpoint won't break until the Nth time it is reached)."); | |
1926 | add_com_alias ("c", "cont", class_run, 1); | |
1927 | add_com_alias ("fg", "cont", class_run, 1); | |
1928 | ||
1929 | add_com ("run", class_run, run_command, | |
1930 | "Start debugged program. You may specify arguments to give it.\n\ | |
1931 | Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\ | |
1932 | Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\ | |
1933 | With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\ | |
1934 | To cancel previous arguments and run with no arguments,\n\ | |
1935 | use \"set args\" without arguments."); | |
1936 | add_com_alias ("r", "run", class_run, 1); | |
1937 | if (xdb_commands) | |
1938 | add_com ("R", class_run, run_no_args_command, | |
c5aa993b | 1939 | "Start debugged program with no arguments."); |
c906108c | 1940 | |
43ff13b4 JM |
1941 | add_com ("interrupt", class_run, interrupt_target_command, |
1942 | "Interrupt the execution of the debugged program."); | |
1943 | ||
c906108c | 1944 | add_info ("registers", nofp_registers_info, |
c5aa993b | 1945 | "List of integer registers and their contents, for selected stack frame.\n\ |
c906108c | 1946 | Register name as argument means describe only that register."); |
7194c49b | 1947 | add_info_alias ("r", "registers", 1); |
c906108c SS |
1948 | |
1949 | if (xdb_commands) | |
c5aa993b JM |
1950 | add_com ("lr", class_info, nofp_registers_info, |
1951 | "List of integer registers and their contents, for selected stack frame.\n\ | |
c906108c SS |
1952 | Register name as argument means describe only that register."); |
1953 | add_info ("all-registers", all_registers_info, | |
c5aa993b | 1954 | "List of all registers and their contents, for selected stack frame.\n\ |
c906108c SS |
1955 | Register name as argument means describe only that register."); |
1956 | ||
1957 | add_info ("program", program_info, | |
1958 | "Execution status of the program."); | |
1959 | ||
1960 | add_info ("float", float_info, | |
1961 | "Print the status of the floating point unit\n"); | |
1962 | ||
07091751 | 1963 | set_inferior_args (xstrdup ("")); /* Initially no args */ |
c906108c SS |
1964 | inferior_environ = make_environ (); |
1965 | init_environ (inferior_environ); | |
1966 | } |