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c906108c | 1 | /* Memory-access and commands for "inferior" process, for GDB. |
b6ba6518 | 2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
8926118c | 3 | 1996, 1997, 1998, 1999, 2000, 2001, 2002 |
c906108c SS |
4 | Free Software Foundation, Inc. |
5 | ||
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b JM |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
22 | |
23 | #include "defs.h" | |
24 | #include <signal.h> | |
25 | #include "gdb_string.h" | |
26 | #include "symtab.h" | |
27 | #include "gdbtypes.h" | |
28 | #include "frame.h" | |
29 | #include "inferior.h" | |
30 | #include "environ.h" | |
31 | #include "value.h" | |
32 | #include "gdbcmd.h" | |
1adeb98a | 33 | #include "symfile.h" |
c906108c SS |
34 | #include "gdbcore.h" |
35 | #include "target.h" | |
36 | #include "language.h" | |
37 | #include "symfile.h" | |
38 | #include "objfiles.h" | |
c94fdfd0 | 39 | #include "completer.h" |
8b93c638 | 40 | #include "ui-out.h" |
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 | ||
552c04a7 TT |
124 | /* The inferior arguments as a vector. If INFERIOR_ARGC is nonzero, |
125 | then we must compute INFERIOR_ARGS from this (via the target). */ | |
126 | ||
127 | static int inferior_argc; | |
128 | static char **inferior_argv; | |
129 | ||
c906108c SS |
130 | /* File name for default use for standard in/out in the inferior. */ |
131 | ||
132 | char *inferior_io_terminal; | |
133 | ||
134 | /* Pid of our debugged inferior, or 0 if no inferior now. | |
135 | Since various parts of infrun.c test this to see whether there is a program | |
136 | being debugged it should be nonzero (currently 3 is used) for remote | |
137 | debugging. */ | |
138 | ||
39f77062 | 139 | ptid_t inferior_ptid; |
c906108c SS |
140 | |
141 | /* Last signal that the inferior received (why it stopped). */ | |
142 | ||
143 | enum target_signal stop_signal; | |
144 | ||
145 | /* Address at which inferior stopped. */ | |
146 | ||
147 | CORE_ADDR stop_pc; | |
148 | ||
149 | /* Chain containing status of breakpoint(s) that we have stopped at. */ | |
150 | ||
151 | bpstat stop_bpstat; | |
152 | ||
153 | /* Flag indicating that a command has proceeded the inferior past the | |
154 | current breakpoint. */ | |
155 | ||
156 | int breakpoint_proceeded; | |
157 | ||
158 | /* Nonzero if stopped due to a step command. */ | |
159 | ||
160 | int stop_step; | |
161 | ||
162 | /* Nonzero if stopped due to completion of a stack dummy routine. */ | |
163 | ||
164 | int stop_stack_dummy; | |
165 | ||
166 | /* Nonzero if stopped due to a random (unexpected) signal in inferior | |
167 | process. */ | |
168 | ||
169 | int stopped_by_random_signal; | |
170 | ||
171 | /* Range to single step within. | |
172 | If this is nonzero, respond to a single-step signal | |
173 | by continuing to step if the pc is in this range. */ | |
174 | ||
c5aa993b JM |
175 | CORE_ADDR step_range_start; /* Inclusive */ |
176 | CORE_ADDR step_range_end; /* Exclusive */ | |
c906108c SS |
177 | |
178 | /* Stack frame address as of when stepping command was issued. | |
179 | This is how we know when we step into a subroutine call, | |
180 | and how to set the frame for the breakpoint used to step out. */ | |
181 | ||
182 | CORE_ADDR step_frame_address; | |
183 | ||
184 | /* Our notion of the current stack pointer. */ | |
185 | ||
186 | CORE_ADDR step_sp; | |
187 | ||
5fbbeb29 | 188 | enum step_over_calls_kind step_over_calls; |
c906108c SS |
189 | |
190 | /* If stepping, nonzero means step count is > 1 | |
191 | so don't print frame next time inferior stops | |
192 | if it stops due to stepping. */ | |
193 | ||
194 | int step_multi; | |
195 | ||
196 | /* Environment to use for running inferior, | |
197 | in format described in environ.h. */ | |
198 | ||
199 | struct environ *inferior_environ; | |
c906108c | 200 | \f |
07091751 FN |
201 | /* Accessor routines. */ |
202 | ||
203 | char * | |
204 | get_inferior_args (void) | |
205 | { | |
552c04a7 TT |
206 | if (inferior_argc != 0) |
207 | { | |
208 | char *n, *old; | |
209 | ||
210 | n = gdbarch_construct_inferior_arguments (current_gdbarch, | |
211 | inferior_argc, inferior_argv); | |
212 | old = set_inferior_args (n); | |
213 | xfree (old); | |
214 | } | |
215 | ||
216 | if (inferior_args == NULL) | |
217 | inferior_args = xstrdup (""); | |
218 | ||
07091751 FN |
219 | return inferior_args; |
220 | } | |
221 | ||
222 | char * | |
223 | set_inferior_args (char *newargs) | |
224 | { | |
225 | char *saved_args = inferior_args; | |
226 | ||
227 | inferior_args = newargs; | |
552c04a7 TT |
228 | inferior_argc = 0; |
229 | inferior_argv = 0; | |
07091751 FN |
230 | |
231 | return saved_args; | |
232 | } | |
c5aa993b | 233 | |
552c04a7 TT |
234 | void |
235 | set_inferior_args_vector (int argc, char **argv) | |
236 | { | |
237 | inferior_argc = argc; | |
238 | inferior_argv = argv; | |
239 | } | |
240 | ||
241 | /* Notice when `set args' is run. */ | |
242 | static void | |
243 | notice_args_set (char *args, int from_tty, struct cmd_list_element *c) | |
244 | { | |
245 | inferior_argc = 0; | |
246 | inferior_argv = 0; | |
247 | } | |
248 | ||
249 | /* Notice when `show args' is run. */ | |
250 | static void | |
251 | notice_args_read (struct cmd_list_element *c) | |
252 | { | |
253 | /* Might compute the value. */ | |
254 | get_inferior_args (); | |
255 | } | |
256 | ||
c2a727fa TT |
257 | \f |
258 | /* Compute command-line string given argument vector. This does the | |
259 | same shell processing as fork_inferior. */ | |
260 | /* ARGSUSED */ | |
261 | char * | |
262 | construct_inferior_arguments (struct gdbarch *gdbarch, int argc, char **argv) | |
263 | { | |
264 | char *result; | |
265 | ||
266 | if (STARTUP_WITH_SHELL) | |
267 | { | |
268 | /* This holds all the characters considered special to the | |
269 | typical Unix shells. We include `^' because the SunOS | |
270 | /bin/sh treats it as a synonym for `|'. */ | |
271 | char *special = "\"!#$&*()\\|[]{}<>?'\"`~^; \t\n"; | |
272 | int i; | |
273 | int length = 0; | |
274 | char *out, *cp; | |
275 | ||
276 | /* We over-compute the size. It shouldn't matter. */ | |
277 | for (i = 0; i < argc; ++i) | |
278 | length += 2 * strlen (argv[i]) + 1; | |
279 | ||
280 | result = (char *) xmalloc (length); | |
281 | out = result; | |
282 | ||
283 | for (i = 0; i < argc; ++i) | |
284 | { | |
285 | if (i > 0) | |
286 | *out++ = ' '; | |
287 | ||
288 | for (cp = argv[i]; *cp; ++cp) | |
289 | { | |
290 | if (strchr (special, *cp) != NULL) | |
291 | *out++ = '\\'; | |
292 | *out++ = *cp; | |
293 | } | |
294 | } | |
295 | *out = '\0'; | |
296 | } | |
297 | else | |
298 | { | |
299 | /* In this case we can't handle arguments that contain spaces, | |
300 | tabs, or newlines -- see breakup_args(). */ | |
301 | int i; | |
302 | int length = 0; | |
303 | ||
304 | for (i = 0; i < argc; ++i) | |
305 | { | |
306 | char *cp = strchr (argv[i], ' '); | |
307 | if (cp == NULL) | |
308 | cp = strchr (argv[i], '\t'); | |
309 | if (cp == NULL) | |
310 | cp = strchr (argv[i], '\n'); | |
311 | if (cp != NULL) | |
312 | error ("can't handle command-line argument containing whitespace"); | |
313 | length += strlen (argv[i]) + 1; | |
314 | } | |
315 | ||
316 | result = (char *) xmalloc (length); | |
317 | result[0] = '\0'; | |
318 | for (i = 0; i < argc; ++i) | |
319 | { | |
320 | if (i > 0) | |
321 | strcat (result, " "); | |
322 | strcat (result, argv[i]); | |
323 | } | |
324 | } | |
325 | ||
326 | return result; | |
327 | } | |
552c04a7 TT |
328 | \f |
329 | ||
43ff13b4 JM |
330 | /* This function detects whether or not a '&' character (indicating |
331 | background execution) has been added as *the last* of the arguments ARGS | |
332 | of a command. If it has, it removes it and returns 1. Otherwise it | |
333 | does nothing and returns 0. */ | |
c5aa993b | 334 | static int |
fba45db2 | 335 | strip_bg_char (char **args) |
43ff13b4 JM |
336 | { |
337 | char *p = NULL; | |
c5aa993b | 338 | |
9846de1b | 339 | p = strchr (*args, '&'); |
c5aa993b | 340 | |
9846de1b | 341 | if (p) |
43ff13b4 JM |
342 | { |
343 | if (p == (*args + strlen (*args) - 1)) | |
344 | { | |
c5aa993b | 345 | if (strlen (*args) > 1) |
43ff13b4 JM |
346 | { |
347 | do | |
348 | p--; | |
349 | while (*p == ' ' || *p == '\t'); | |
350 | *(p + 1) = '\0'; | |
351 | } | |
352 | else | |
353 | *args = 0; | |
354 | return 1; | |
355 | } | |
356 | } | |
357 | return 0; | |
358 | } | |
359 | ||
c906108c SS |
360 | /* ARGSUSED */ |
361 | void | |
fba45db2 | 362 | tty_command (char *file, int from_tty) |
c906108c SS |
363 | { |
364 | if (file == 0) | |
365 | error_no_arg ("terminal name for running target process"); | |
366 | ||
367 | inferior_io_terminal = savestring (file, strlen (file)); | |
368 | } | |
369 | ||
370 | static void | |
fba45db2 | 371 | run_command (char *args, int from_tty) |
c906108c SS |
372 | { |
373 | char *exec_file; | |
374 | ||
375 | dont_repeat (); | |
376 | ||
39f77062 | 377 | if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution) |
c906108c | 378 | { |
adf40b2e JM |
379 | if (from_tty |
380 | && !query ("The program being debugged has been started already.\n\ | |
c906108c SS |
381 | Start it from the beginning? ")) |
382 | error ("Program not restarted."); | |
383 | target_kill (); | |
384 | #if defined(SOLIB_RESTART) | |
385 | SOLIB_RESTART (); | |
386 | #endif | |
387 | init_wait_for_inferior (); | |
388 | } | |
389 | ||
390 | clear_breakpoint_hit_counts (); | |
391 | ||
392 | exec_file = (char *) get_exec_file (0); | |
393 | ||
394 | /* Purge old solib objfiles. */ | |
395 | objfile_purge_solibs (); | |
396 | ||
397 | do_run_cleanups (NULL); | |
398 | ||
399 | /* The exec file is re-read every time we do a generic_mourn_inferior, so | |
400 | we just have to worry about the symbol file. */ | |
401 | reread_symbols (); | |
402 | ||
403 | /* We keep symbols from add-symbol-file, on the grounds that the | |
404 | user might want to add some symbols before running the program | |
405 | (right?). But sometimes (dynamic loading where the user manually | |
406 | introduces the new symbols with add-symbol-file), the code which | |
407 | the symbols describe does not persist between runs. Currently | |
408 | the user has to manually nuke all symbols between runs if they | |
409 | want them to go away (PR 2207). This is probably reasonable. */ | |
410 | ||
43ff13b4 | 411 | if (!args) |
6426a772 JM |
412 | { |
413 | if (event_loop_p && target_can_async_p ()) | |
414 | async_disable_stdin (); | |
415 | } | |
43ff13b4 | 416 | else |
c906108c | 417 | { |
43ff13b4 JM |
418 | int async_exec = strip_bg_char (&args); |
419 | ||
420 | /* If we get a request for running in the bg but the target | |
421 | doesn't support it, error out. */ | |
6426a772 | 422 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
423 | error ("Asynchronous execution not supported on this target."); |
424 | ||
425 | /* If we don't get a request of running in the bg, then we need | |
c5aa993b | 426 | to simulate synchronous (fg) execution. */ |
6426a772 | 427 | if (event_loop_p && !async_exec && target_can_async_p ()) |
43ff13b4 JM |
428 | { |
429 | /* Simulate synchronous execution */ | |
6426a772 | 430 | async_disable_stdin (); |
43ff13b4 JM |
431 | } |
432 | ||
433 | /* If there were other args, beside '&', process them. */ | |
434 | if (args) | |
435 | { | |
07091751 FN |
436 | char *old_args = set_inferior_args (xstrdup (args)); |
437 | xfree (old_args); | |
43ff13b4 | 438 | } |
c906108c SS |
439 | } |
440 | ||
441 | if (from_tty) | |
442 | { | |
8b93c638 JM |
443 | ui_out_field_string (uiout, NULL, "Starting program"); |
444 | ui_out_text (uiout, ": "); | |
445 | if (exec_file) | |
446 | ui_out_field_string (uiout, "execfile", exec_file); | |
447 | ui_out_spaces (uiout, 1); | |
552c04a7 TT |
448 | /* We call get_inferior_args() because we might need to compute |
449 | the value now. */ | |
450 | ui_out_field_string (uiout, "infargs", get_inferior_args ()); | |
8b93c638 JM |
451 | ui_out_text (uiout, "\n"); |
452 | ui_out_flush (uiout); | |
c906108c SS |
453 | } |
454 | ||
552c04a7 TT |
455 | /* We call get_inferior_args() because we might need to compute |
456 | the value now. */ | |
457 | target_create_inferior (exec_file, get_inferior_args (), | |
c906108c SS |
458 | environ_vector (inferior_environ)); |
459 | } | |
460 | ||
461 | ||
462 | static void | |
fba45db2 | 463 | run_no_args_command (char *args, int from_tty) |
c906108c | 464 | { |
07091751 FN |
465 | char *old_args = set_inferior_args (xstrdup ("")); |
466 | xfree (old_args); | |
c906108c | 467 | } |
c906108c | 468 | \f |
c5aa993b | 469 | |
c906108c | 470 | void |
fba45db2 | 471 | continue_command (char *proc_count_exp, int from_tty) |
c906108c | 472 | { |
c5aa993b | 473 | int async_exec = 0; |
c906108c SS |
474 | ERROR_NO_INFERIOR; |
475 | ||
43ff13b4 JM |
476 | /* Find out whether we must run in the background. */ |
477 | if (proc_count_exp != NULL) | |
478 | async_exec = strip_bg_char (&proc_count_exp); | |
479 | ||
480 | /* If we must run in the background, but the target can't do it, | |
481 | error out. */ | |
6426a772 | 482 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
483 | error ("Asynchronous execution not supported on this target."); |
484 | ||
485 | /* If we are not asked to run in the bg, then prepare to run in the | |
486 | foreground, synchronously. */ | |
6426a772 | 487 | if (event_loop_p && !async_exec && target_can_async_p ()) |
c5aa993b | 488 | { |
43ff13b4 | 489 | /* Simulate synchronous execution */ |
6426a772 | 490 | async_disable_stdin (); |
43ff13b4 | 491 | } |
c906108c | 492 | |
43ff13b4 JM |
493 | /* If have argument (besides '&'), set proceed count of breakpoint |
494 | we stopped at. */ | |
c906108c SS |
495 | if (proc_count_exp != NULL) |
496 | { | |
497 | bpstat bs = stop_bpstat; | |
498 | int num = bpstat_num (&bs); | |
499 | if (num == 0 && from_tty) | |
500 | { | |
501 | printf_filtered | |
502 | ("Not stopped at any breakpoint; argument ignored.\n"); | |
503 | } | |
504 | while (num != 0) | |
505 | { | |
506 | set_ignore_count (num, | |
bb518678 | 507 | parse_and_eval_long (proc_count_exp) - 1, |
c906108c SS |
508 | from_tty); |
509 | /* set_ignore_count prints a message ending with a period. | |
510 | So print two spaces before "Continuing.". */ | |
511 | if (from_tty) | |
512 | printf_filtered (" "); | |
513 | num = bpstat_num (&bs); | |
514 | } | |
515 | } | |
516 | ||
517 | if (from_tty) | |
518 | printf_filtered ("Continuing.\n"); | |
519 | ||
520 | clear_proceed_status (); | |
521 | ||
2acceee2 | 522 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); |
c906108c SS |
523 | } |
524 | \f | |
525 | /* Step until outside of current statement. */ | |
526 | ||
527 | /* ARGSUSED */ | |
528 | static void | |
fba45db2 | 529 | step_command (char *count_string, int from_tty) |
c906108c SS |
530 | { |
531 | step_1 (0, 0, count_string); | |
532 | } | |
533 | ||
534 | /* Likewise, but skip over subroutine calls as if single instructions. */ | |
535 | ||
536 | /* ARGSUSED */ | |
537 | static void | |
fba45db2 | 538 | next_command (char *count_string, int from_tty) |
c906108c SS |
539 | { |
540 | step_1 (1, 0, count_string); | |
541 | } | |
542 | ||
543 | /* Likewise, but step only one instruction. */ | |
544 | ||
545 | /* ARGSUSED */ | |
546 | void | |
fba45db2 | 547 | stepi_command (char *count_string, int from_tty) |
c906108c SS |
548 | { |
549 | step_1 (0, 1, count_string); | |
550 | } | |
551 | ||
552 | /* ARGSUSED */ | |
553 | void | |
fba45db2 | 554 | nexti_command (char *count_string, int from_tty) |
c906108c SS |
555 | { |
556 | step_1 (1, 1, count_string); | |
557 | } | |
558 | ||
74b7792f AC |
559 | static void |
560 | disable_longjmp_breakpoint_cleanup (void *ignore) | |
561 | { | |
562 | disable_longjmp_breakpoint (); | |
563 | } | |
564 | ||
c906108c | 565 | static void |
fba45db2 | 566 | step_1 (int skip_subroutines, int single_inst, char *count_string) |
c906108c SS |
567 | { |
568 | register int count = 1; | |
569 | struct frame_info *frame; | |
570 | struct cleanup *cleanups = 0; | |
43ff13b4 | 571 | int async_exec = 0; |
c5aa993b | 572 | |
c906108c | 573 | ERROR_NO_INFERIOR; |
43ff13b4 JM |
574 | |
575 | if (count_string) | |
576 | async_exec = strip_bg_char (&count_string); | |
c5aa993b | 577 | |
43ff13b4 JM |
578 | /* If we get a request for running in the bg but the target |
579 | doesn't support it, error out. */ | |
6426a772 | 580 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
581 | error ("Asynchronous execution not supported on this target."); |
582 | ||
583 | /* If we don't get a request of running in the bg, then we need | |
584 | to simulate synchronous (fg) execution. */ | |
6426a772 | 585 | if (event_loop_p && !async_exec && target_can_async_p ()) |
43ff13b4 JM |
586 | { |
587 | /* Simulate synchronous execution */ | |
6426a772 | 588 | async_disable_stdin (); |
43ff13b4 JM |
589 | } |
590 | ||
bb518678 | 591 | count = count_string ? parse_and_eval_long (count_string) : 1; |
c906108c | 592 | |
c5aa993b | 593 | if (!single_inst || skip_subroutines) /* leave si command alone */ |
c906108c | 594 | { |
c5aa993b | 595 | enable_longjmp_breakpoint (); |
c2d11a7d | 596 | if (!event_loop_p || !target_can_async_p ()) |
74b7792f | 597 | cleanups = make_cleanup (disable_longjmp_breakpoint_cleanup, 0 /*ignore*/); |
c2d11a7d | 598 | else |
74b7792f | 599 | make_exec_cleanup (disable_longjmp_breakpoint_cleanup, 0 /*ignore*/); |
c2d11a7d JM |
600 | } |
601 | ||
602 | /* In synchronous case, all is well, just use the regular for loop. */ | |
603 | if (!event_loop_p || !target_can_async_p ()) | |
604 | { | |
605 | for (; count > 0; count--) | |
606 | { | |
607 | clear_proceed_status (); | |
608 | ||
609 | frame = get_current_frame (); | |
610 | if (!frame) /* Avoid coredump here. Why tho? */ | |
611 | error ("No current frame"); | |
612 | step_frame_address = FRAME_FP (frame); | |
613 | step_sp = read_sp (); | |
614 | ||
615 | if (!single_inst) | |
616 | { | |
617 | find_pc_line_pc_range (stop_pc, &step_range_start, &step_range_end); | |
618 | if (step_range_end == 0) | |
619 | { | |
620 | char *name; | |
621 | if (find_pc_partial_function (stop_pc, &name, &step_range_start, | |
622 | &step_range_end) == 0) | |
623 | error ("Cannot find bounds of current function"); | |
624 | ||
625 | target_terminal_ours (); | |
626 | printf_filtered ("\ | |
627 | Single stepping until exit from function %s, \n\ | |
628 | which has no line number information.\n", name); | |
629 | } | |
630 | } | |
631 | else | |
632 | { | |
633 | /* Say we are stepping, but stop after one insn whatever it does. */ | |
634 | step_range_start = step_range_end = 1; | |
635 | if (!skip_subroutines) | |
636 | /* It is stepi. | |
637 | Don't step over function calls, not even to functions lacking | |
638 | line numbers. */ | |
5fbbeb29 | 639 | step_over_calls = STEP_OVER_NONE; |
c2d11a7d JM |
640 | } |
641 | ||
642 | if (skip_subroutines) | |
5fbbeb29 | 643 | step_over_calls = STEP_OVER_ALL; |
c2d11a7d JM |
644 | |
645 | step_multi = (count > 1); | |
646 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); | |
647 | ||
648 | if (!stop_step) | |
649 | break; | |
650 | ||
651 | /* FIXME: On nexti, this may have already been done (when we hit the | |
652 | step resume break, I think). Probably this should be moved to | |
653 | wait_for_inferior (near the top). */ | |
654 | #if defined (SHIFT_INST_REGS) | |
655 | SHIFT_INST_REGS (); | |
656 | #endif | |
657 | } | |
658 | ||
659 | if (!single_inst || skip_subroutines) | |
660 | do_cleanups (cleanups); | |
661 | return; | |
662 | } | |
663 | /* In case of asynchronous target things get complicated, do only | |
664 | one step for now, before returning control to the event loop. Let | |
665 | the continuation figure out how many other steps we need to do, | |
666 | and handle them one at the time, through step_once(). */ | |
667 | else | |
668 | { | |
669 | if (event_loop_p && target_can_async_p ()) | |
670 | step_once (skip_subroutines, single_inst, count); | |
c906108c | 671 | } |
c2d11a7d | 672 | } |
c906108c | 673 | |
c2d11a7d JM |
674 | /* Called after we are done with one step operation, to check whether |
675 | we need to step again, before we print the prompt and return control | |
676 | to the user. If count is > 1, we will need to do one more call to | |
677 | proceed(), via step_once(). Basically it is like step_once and | |
678 | step_1_continuation are co-recursive. */ | |
679 | static void | |
fba45db2 | 680 | step_1_continuation (struct continuation_arg *arg) |
c2d11a7d | 681 | { |
57e687d9 MS |
682 | int count; |
683 | int skip_subroutines; | |
684 | int single_inst; | |
685 | ||
686 | skip_subroutines = arg->data.integer; | |
687 | single_inst = arg->next->data.integer; | |
688 | count = arg->next->next->data.integer; | |
689 | ||
690 | if (stop_step) | |
691 | { | |
692 | /* FIXME: On nexti, this may have already been done (when we hit the | |
693 | step resume break, I think). Probably this should be moved to | |
694 | wait_for_inferior (near the top). */ | |
c2d11a7d | 695 | #if defined (SHIFT_INST_REGS) |
57e687d9 | 696 | SHIFT_INST_REGS (); |
c2d11a7d | 697 | #endif |
57e687d9 MS |
698 | step_once (skip_subroutines, single_inst, count - 1); |
699 | } | |
700 | else | |
701 | if (!single_inst || skip_subroutines) | |
702 | do_exec_cleanups (ALL_CLEANUPS); | |
c2d11a7d JM |
703 | } |
704 | ||
705 | /* Do just one step operation. If count >1 we will have to set up a | |
706 | continuation to be done after the target stops (after this one | |
707 | step). This is useful to implement the 'step n' kind of commands, in | |
708 | case of asynchronous targets. We had to split step_1 into two parts, | |
709 | one to be done before proceed() and one afterwards. This function is | |
710 | called in case of step n with n>1, after the first step operation has | |
711 | been completed.*/ | |
712 | static void | |
0d06e24b | 713 | step_once (int skip_subroutines, int single_inst, int count) |
c2d11a7d | 714 | { |
0d06e24b JM |
715 | struct continuation_arg *arg1; |
716 | struct continuation_arg *arg2; | |
717 | struct continuation_arg *arg3; | |
718 | struct frame_info *frame; | |
c2d11a7d JM |
719 | |
720 | if (count > 0) | |
c906108c SS |
721 | { |
722 | clear_proceed_status (); | |
723 | ||
724 | frame = get_current_frame (); | |
c5aa993b | 725 | if (!frame) /* Avoid coredump here. Why tho? */ |
c906108c SS |
726 | error ("No current frame"); |
727 | step_frame_address = FRAME_FP (frame); | |
728 | step_sp = read_sp (); | |
729 | ||
c5aa993b | 730 | if (!single_inst) |
c906108c SS |
731 | { |
732 | find_pc_line_pc_range (stop_pc, &step_range_start, &step_range_end); | |
5fbbeb29 CF |
733 | |
734 | /* If we have no line info, switch to stepi mode. */ | |
735 | if (step_range_end == 0 && step_stop_if_no_debug) | |
736 | { | |
737 | step_range_start = step_range_end = 1; | |
738 | } | |
739 | else if (step_range_end == 0) | |
c906108c SS |
740 | { |
741 | char *name; | |
742 | if (find_pc_partial_function (stop_pc, &name, &step_range_start, | |
743 | &step_range_end) == 0) | |
744 | error ("Cannot find bounds of current function"); | |
745 | ||
746 | target_terminal_ours (); | |
747 | printf_filtered ("\ | |
748 | Single stepping until exit from function %s, \n\ | |
749 | which has no line number information.\n", name); | |
750 | } | |
751 | } | |
752 | else | |
753 | { | |
754 | /* Say we are stepping, but stop after one insn whatever it does. */ | |
755 | step_range_start = step_range_end = 1; | |
756 | if (!skip_subroutines) | |
757 | /* It is stepi. | |
758 | Don't step over function calls, not even to functions lacking | |
759 | line numbers. */ | |
5fbbeb29 | 760 | step_over_calls = STEP_OVER_NONE; |
c906108c SS |
761 | } |
762 | ||
763 | if (skip_subroutines) | |
5fbbeb29 | 764 | step_over_calls = STEP_OVER_ALL; |
c906108c SS |
765 | |
766 | step_multi = (count > 1); | |
c2d11a7d JM |
767 | arg1 = |
768 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
769 | arg2 = | |
770 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
771 | arg3 = | |
772 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
773 | arg1->next = arg2; | |
57e687d9 | 774 | arg1->data.integer = skip_subroutines; |
c2d11a7d | 775 | arg2->next = arg3; |
57e687d9 | 776 | arg2->data.integer = single_inst; |
c2d11a7d | 777 | arg3->next = NULL; |
57e687d9 | 778 | arg3->data.integer = count; |
c2d11a7d | 779 | add_intermediate_continuation (step_1_continuation, arg1); |
2acceee2 | 780 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); |
c906108c | 781 | } |
c906108c | 782 | } |
c2d11a7d | 783 | |
c906108c SS |
784 | \f |
785 | /* Continue program at specified address. */ | |
786 | ||
787 | static void | |
fba45db2 | 788 | jump_command (char *arg, int from_tty) |
c906108c SS |
789 | { |
790 | register CORE_ADDR addr; | |
791 | struct symtabs_and_lines sals; | |
792 | struct symtab_and_line sal; | |
793 | struct symbol *fn; | |
794 | struct symbol *sfn; | |
43ff13b4 | 795 | int async_exec = 0; |
c5aa993b | 796 | |
c906108c SS |
797 | ERROR_NO_INFERIOR; |
798 | ||
43ff13b4 JM |
799 | /* Find out whether we must run in the background. */ |
800 | if (arg != NULL) | |
801 | async_exec = strip_bg_char (&arg); | |
802 | ||
803 | /* If we must run in the background, but the target can't do it, | |
804 | error out. */ | |
6426a772 | 805 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
806 | error ("Asynchronous execution not supported on this target."); |
807 | ||
808 | /* If we are not asked to run in the bg, then prepare to run in the | |
809 | foreground, synchronously. */ | |
6426a772 | 810 | if (event_loop_p && !async_exec && target_can_async_p ()) |
c5aa993b | 811 | { |
43ff13b4 | 812 | /* Simulate synchronous execution */ |
6426a772 | 813 | async_disable_stdin (); |
43ff13b4 JM |
814 | } |
815 | ||
c906108c SS |
816 | if (!arg) |
817 | error_no_arg ("starting address"); | |
818 | ||
819 | sals = decode_line_spec_1 (arg, 1); | |
820 | if (sals.nelts != 1) | |
821 | { | |
822 | error ("Unreasonable jump request"); | |
823 | } | |
824 | ||
825 | sal = sals.sals[0]; | |
b8c9b27d | 826 | xfree (sals.sals); |
c906108c SS |
827 | |
828 | if (sal.symtab == 0 && sal.pc == 0) | |
829 | error ("No source file has been specified."); | |
830 | ||
c5aa993b | 831 | resolve_sal_pc (&sal); /* May error out */ |
c906108c SS |
832 | |
833 | /* See if we are trying to jump to another function. */ | |
834 | fn = get_frame_function (get_current_frame ()); | |
835 | sfn = find_pc_function (sal.pc); | |
836 | if (fn != NULL && sfn != fn) | |
837 | { | |
838 | if (!query ("Line %d is not in `%s'. Jump anyway? ", sal.line, | |
839 | SYMBOL_SOURCE_NAME (fn))) | |
840 | { | |
841 | error ("Not confirmed."); | |
842 | /* NOTREACHED */ | |
843 | } | |
844 | } | |
845 | ||
c5aa993b | 846 | if (sfn != NULL) |
c906108c SS |
847 | { |
848 | fixup_symbol_section (sfn, 0); | |
c5aa993b | 849 | if (section_is_overlay (SYMBOL_BFD_SECTION (sfn)) && |
c906108c SS |
850 | !section_is_mapped (SYMBOL_BFD_SECTION (sfn))) |
851 | { | |
852 | if (!query ("WARNING!!! Destination is in unmapped overlay! Jump anyway? ")) | |
853 | { | |
854 | error ("Not confirmed."); | |
855 | /* NOTREACHED */ | |
856 | } | |
857 | } | |
858 | } | |
859 | ||
c906108c SS |
860 | addr = sal.pc; |
861 | ||
862 | if (from_tty) | |
863 | { | |
864 | printf_filtered ("Continuing at "); | |
865 | print_address_numeric (addr, 1, gdb_stdout); | |
866 | printf_filtered (".\n"); | |
867 | } | |
868 | ||
869 | clear_proceed_status (); | |
870 | proceed (addr, TARGET_SIGNAL_0, 0); | |
871 | } | |
c906108c | 872 | \f |
c5aa993b | 873 | |
c906108c SS |
874 | /* Go to line or address in current procedure */ |
875 | static void | |
fba45db2 | 876 | go_command (char *line_no, int from_tty) |
c906108c | 877 | { |
c5aa993b | 878 | if (line_no == (char *) NULL || !*line_no) |
b83266a0 | 879 | printf_filtered (GO_USAGE); |
c906108c SS |
880 | else |
881 | { | |
b83266a0 SS |
882 | tbreak_command (line_no, from_tty); |
883 | jump_command (line_no, from_tty); | |
c906108c SS |
884 | } |
885 | } | |
c906108c | 886 | \f |
c5aa993b | 887 | |
c906108c SS |
888 | /* Continue program giving it specified signal. */ |
889 | ||
890 | static void | |
fba45db2 | 891 | signal_command (char *signum_exp, int from_tty) |
c906108c SS |
892 | { |
893 | enum target_signal oursig; | |
894 | ||
895 | dont_repeat (); /* Too dangerous. */ | |
896 | ERROR_NO_INFERIOR; | |
897 | ||
898 | if (!signum_exp) | |
899 | error_no_arg ("signal number"); | |
900 | ||
901 | /* It would be even slicker to make signal names be valid expressions, | |
902 | (the type could be "enum $signal" or some such), then the user could | |
903 | assign them to convenience variables. */ | |
904 | oursig = target_signal_from_name (signum_exp); | |
905 | ||
906 | if (oursig == TARGET_SIGNAL_UNKNOWN) | |
907 | { | |
908 | /* No, try numeric. */ | |
bb518678 | 909 | int num = parse_and_eval_long (signum_exp); |
c906108c SS |
910 | |
911 | if (num == 0) | |
912 | oursig = TARGET_SIGNAL_0; | |
913 | else | |
914 | oursig = target_signal_from_command (num); | |
915 | } | |
916 | ||
917 | if (from_tty) | |
918 | { | |
919 | if (oursig == TARGET_SIGNAL_0) | |
920 | printf_filtered ("Continuing with no signal.\n"); | |
921 | else | |
922 | printf_filtered ("Continuing with signal %s.\n", | |
923 | target_signal_to_name (oursig)); | |
924 | } | |
925 | ||
926 | clear_proceed_status (); | |
927 | /* "signal 0" should not get stuck if we are stopped at a breakpoint. | |
928 | FIXME: Neither should "signal foo" but when I tried passing | |
929 | (CORE_ADDR)-1 unconditionally I got a testsuite failure which I haven't | |
930 | tried to track down yet. */ | |
2acceee2 | 931 | proceed (oursig == TARGET_SIGNAL_0 ? (CORE_ADDR) -1 : stop_pc, oursig, 0); |
c906108c SS |
932 | } |
933 | ||
934 | /* Call breakpoint_auto_delete on the current contents of the bpstat | |
935 | pointed to by arg (which is really a bpstat *). */ | |
936 | ||
c906108c | 937 | static void |
fba45db2 | 938 | breakpoint_auto_delete_contents (PTR arg) |
c906108c | 939 | { |
c5aa993b | 940 | breakpoint_auto_delete (*(bpstat *) arg); |
c906108c SS |
941 | } |
942 | ||
c906108c SS |
943 | |
944 | /* Execute a "stack dummy", a piece of code stored in the stack | |
945 | by the debugger to be executed in the inferior. | |
946 | ||
947 | To call: first, do PUSH_DUMMY_FRAME. | |
948 | Then push the contents of the dummy. It should end with a breakpoint insn. | |
949 | Then call here, passing address at which to start the dummy. | |
950 | ||
951 | The contents of all registers are saved before the dummy frame is popped | |
952 | and copied into the buffer BUFFER. | |
953 | ||
954 | The dummy's frame is automatically popped whenever that break is hit. | |
955 | If that is the first time the program stops, run_stack_dummy | |
956 | returns to its caller with that frame already gone and returns 0. | |
da59e081 JM |
957 | |
958 | Otherwise, run_stack-dummy returns a non-zero value. | |
959 | If the called function receives a random signal, we do not allow the user | |
960 | to continue executing it as this may not work. The dummy frame is poped | |
961 | and we return 1. | |
962 | If we hit a breakpoint, we leave the frame in place and return 2 (the frame | |
963 | will eventually be popped when we do hit the dummy end breakpoint). */ | |
c906108c | 964 | |
c906108c | 965 | int |
fba45db2 | 966 | run_stack_dummy (CORE_ADDR addr, char *buffer) |
c906108c SS |
967 | { |
968 | struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); | |
ed9a39eb | 969 | int saved_async = 0; |
c906108c SS |
970 | |
971 | /* Now proceed, having reached the desired place. */ | |
972 | clear_proceed_status (); | |
96baa820 | 973 | |
7a292a7a SS |
974 | if (CALL_DUMMY_BREAKPOINT_OFFSET_P) |
975 | { | |
976 | struct breakpoint *bpt; | |
977 | struct symtab_and_line sal; | |
c5aa993b JM |
978 | |
979 | INIT_SAL (&sal); /* initialize to zeroes */ | |
7a292a7a SS |
980 | if (CALL_DUMMY_LOCATION == AT_ENTRY_POINT) |
981 | { | |
982 | sal.pc = CALL_DUMMY_ADDRESS (); | |
983 | } | |
984 | else | |
985 | { | |
986 | sal.pc = addr - CALL_DUMMY_START_OFFSET + CALL_DUMMY_BREAKPOINT_OFFSET; | |
987 | } | |
988 | sal.section = find_pc_overlay (sal.pc); | |
c5aa993b | 989 | |
7a292a7a | 990 | /* Set up a FRAME for the dummy frame so we can pass it to |
c5aa993b JM |
991 | set_momentary_breakpoint. We need to give the breakpoint a |
992 | frame in case there is only one copy of the dummy (e.g. | |
993 | CALL_DUMMY_LOCATION == AFTER_TEXT_END). */ | |
7a292a7a SS |
994 | flush_cached_frames (); |
995 | set_current_frame (create_new_frame (read_fp (), sal.pc)); | |
c5aa993b | 996 | |
7a292a7a | 997 | /* If defined, CALL_DUMMY_BREAKPOINT_OFFSET is where we need to put |
c5aa993b JM |
998 | a breakpoint instruction. If not, the call dummy already has the |
999 | breakpoint instruction in it. | |
1000 | ||
1001 | addr is the address of the call dummy plus the CALL_DUMMY_START_OFFSET, | |
1002 | so we need to subtract the CALL_DUMMY_START_OFFSET. */ | |
7a292a7a SS |
1003 | bpt = set_momentary_breakpoint (sal, |
1004 | get_current_frame (), | |
1005 | bp_call_dummy); | |
b5de0fa7 | 1006 | bpt->disposition = disp_del; |
c5aa993b | 1007 | |
7a292a7a | 1008 | /* If all error()s out of proceed ended up calling normal_stop (and |
c5aa993b JM |
1009 | perhaps they should; it already does in the special case of error |
1010 | out of resume()), then we wouldn't need this. */ | |
7a292a7a SS |
1011 | make_cleanup (breakpoint_auto_delete_contents, &stop_bpstat); |
1012 | } | |
c906108c SS |
1013 | |
1014 | disable_watchpoints_before_interactive_call_start (); | |
1015 | proceed_to_finish = 1; /* We want stop_registers, please... */ | |
ed9a39eb JM |
1016 | |
1017 | if (target_can_async_p ()) | |
1018 | saved_async = target_async_mask (0); | |
1019 | ||
c906108c | 1020 | proceed (addr, TARGET_SIGNAL_0, 0); |
ed9a39eb JM |
1021 | |
1022 | if (saved_async) | |
1023 | target_async_mask (saved_async); | |
1024 | ||
c906108c SS |
1025 | enable_watchpoints_after_interactive_call_stop (); |
1026 | ||
1027 | discard_cleanups (old_cleanups); | |
1028 | ||
242bfc55 | 1029 | /* We can stop during an inferior call because a signal is received. */ |
da59e081 | 1030 | if (stopped_by_random_signal) |
242bfc55 | 1031 | return 1; |
da59e081 JM |
1032 | |
1033 | /* We may also stop prematurely because we hit a breakpoint in the | |
242bfc55 | 1034 | called routine. */ |
c906108c | 1035 | if (!stop_stack_dummy) |
da59e081 | 1036 | return 2; |
c906108c | 1037 | |
da59e081 | 1038 | /* On normal return, the stack dummy has been popped already. */ |
c906108c | 1039 | |
7a292a7a | 1040 | memcpy (buffer, stop_registers, REGISTER_BYTES); |
c906108c SS |
1041 | return 0; |
1042 | } | |
1043 | \f | |
1044 | /* Proceed until we reach a different source line with pc greater than | |
1045 | our current one or exit the function. We skip calls in both cases. | |
1046 | ||
1047 | Note that eventually this command should probably be changed so | |
1048 | that only source lines are printed out when we hit the breakpoint | |
1049 | we set. This may involve changes to wait_for_inferior and the | |
1050 | proceed status code. */ | |
1051 | ||
1052 | /* ARGSUSED */ | |
1053 | static void | |
fba45db2 | 1054 | until_next_command (int from_tty) |
c906108c SS |
1055 | { |
1056 | struct frame_info *frame; | |
1057 | CORE_ADDR pc; | |
1058 | struct symbol *func; | |
1059 | struct symtab_and_line sal; | |
c5aa993b | 1060 | |
c906108c SS |
1061 | clear_proceed_status (); |
1062 | ||
1063 | frame = get_current_frame (); | |
1064 | ||
1065 | /* Step until either exited from this function or greater | |
1066 | than the current line (if in symbolic section) or pc (if | |
1067 | not). */ | |
1068 | ||
1069 | pc = read_pc (); | |
1070 | func = find_pc_function (pc); | |
c5aa993b | 1071 | |
c906108c SS |
1072 | if (!func) |
1073 | { | |
1074 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (pc); | |
c5aa993b | 1075 | |
c906108c SS |
1076 | if (msymbol == NULL) |
1077 | error ("Execution is not within a known function."); | |
c5aa993b | 1078 | |
c906108c SS |
1079 | step_range_start = SYMBOL_VALUE_ADDRESS (msymbol); |
1080 | step_range_end = pc; | |
1081 | } | |
1082 | else | |
1083 | { | |
1084 | sal = find_pc_line (pc, 0); | |
c5aa993b | 1085 | |
c906108c SS |
1086 | step_range_start = BLOCK_START (SYMBOL_BLOCK_VALUE (func)); |
1087 | step_range_end = sal.end; | |
1088 | } | |
c5aa993b | 1089 | |
5fbbeb29 | 1090 | step_over_calls = STEP_OVER_ALL; |
c906108c SS |
1091 | step_frame_address = FRAME_FP (frame); |
1092 | step_sp = read_sp (); | |
1093 | ||
1094 | step_multi = 0; /* Only one call to proceed */ | |
c5aa993b | 1095 | |
2acceee2 | 1096 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); |
c906108c SS |
1097 | } |
1098 | ||
c5aa993b | 1099 | static void |
fba45db2 | 1100 | until_command (char *arg, int from_tty) |
c906108c | 1101 | { |
43ff13b4 JM |
1102 | int async_exec = 0; |
1103 | ||
c906108c SS |
1104 | if (!target_has_execution) |
1105 | error ("The program is not running."); | |
43ff13b4 JM |
1106 | |
1107 | /* Find out whether we must run in the background. */ | |
1108 | if (arg != NULL) | |
1109 | async_exec = strip_bg_char (&arg); | |
1110 | ||
1111 | /* If we must run in the background, but the target can't do it, | |
1112 | error out. */ | |
6426a772 | 1113 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
1114 | error ("Asynchronous execution not supported on this target."); |
1115 | ||
1116 | /* If we are not asked to run in the bg, then prepare to run in the | |
1117 | foreground, synchronously. */ | |
6426a772 | 1118 | if (event_loop_p && !async_exec && target_can_async_p ()) |
c5aa993b | 1119 | { |
43ff13b4 | 1120 | /* Simulate synchronous execution */ |
6426a772 | 1121 | async_disable_stdin (); |
43ff13b4 JM |
1122 | } |
1123 | ||
c906108c SS |
1124 | if (arg) |
1125 | until_break_command (arg, from_tty); | |
1126 | else | |
1127 | until_next_command (from_tty); | |
1128 | } | |
1129 | \f | |
43ff13b4 | 1130 | |
11cf8741 JM |
1131 | /* Print the result of a function at the end of a 'finish' command. */ |
1132 | static void | |
1133 | print_return_value (int structure_return, struct type *value_type) | |
1134 | { | |
3d6d86c6 | 1135 | struct value *value; |
8b93c638 | 1136 | static struct ui_stream *stb = NULL; |
11cf8741 JM |
1137 | |
1138 | if (!structure_return) | |
1139 | { | |
1140 | value = value_being_returned (value_type, stop_registers, structure_return); | |
8b93c638 JM |
1141 | stb = ui_out_stream_new (uiout); |
1142 | ui_out_text (uiout, "Value returned is "); | |
1143 | ui_out_field_fmt (uiout, "gdb-result-var", "$%d", record_latest_value (value)); | |
9549d9c1 | 1144 | ui_out_text (uiout, " = "); |
8b93c638 JM |
1145 | value_print (value, stb->stream, 0, Val_no_prettyprint); |
1146 | ui_out_field_stream (uiout, "return-value", stb); | |
1147 | ui_out_text (uiout, "\n"); | |
11cf8741 JM |
1148 | } |
1149 | else | |
1150 | { | |
1151 | /* We cannot determine the contents of the structure because | |
1152 | it is on the stack, and we don't know where, since we did not | |
1153 | initiate the call, as opposed to the call_function_by_hand case */ | |
1154 | #ifdef VALUE_RETURNED_FROM_STACK | |
1155 | value = 0; | |
8b93c638 JM |
1156 | ui_out_text (uiout, "Value returned has type: "); |
1157 | ui_out_field_string (uiout, "return-type", TYPE_NAME (value_type)); | |
1158 | ui_out_text (uiout, "."); | |
1159 | ui_out_text (uiout, " Cannot determine contents\n"); | |
11cf8741 JM |
1160 | #else |
1161 | value = value_being_returned (value_type, stop_registers, structure_return); | |
8b93c638 JM |
1162 | stb = ui_out_stream_new (uiout); |
1163 | ui_out_text (uiout, "Value returned is "); | |
1164 | ui_out_field_fmt (uiout, "gdb-result-var", "$%d", record_latest_value (value)); | |
28ae27b1 | 1165 | ui_out_text (uiout, " = "); |
8b93c638 JM |
1166 | value_print (value, stb->stream, 0, Val_no_prettyprint); |
1167 | ui_out_field_stream (uiout, "return-value", stb); | |
1168 | ui_out_text (uiout, "\n"); | |
11cf8741 JM |
1169 | #endif |
1170 | } | |
1171 | } | |
1172 | ||
43ff13b4 JM |
1173 | /* Stuff that needs to be done by the finish command after the target |
1174 | has stopped. In asynchronous mode, we wait for the target to stop in | |
1175 | the call to poll or select in the event loop, so it is impossible to | |
1176 | do all the stuff as part of the finish_command function itself. The | |
1177 | only chance we have to complete this command is in | |
1178 | fetch_inferior_event, which is called by the event loop as soon as it | |
1179 | detects that the target has stopped. This function is called via the | |
6953f3ba | 1180 | cmd_continuation pointer. */ |
43ff13b4 | 1181 | void |
fba45db2 | 1182 | finish_command_continuation (struct continuation_arg *arg) |
43ff13b4 JM |
1183 | { |
1184 | register struct symbol *function; | |
1185 | struct breakpoint *breakpoint; | |
0d06e24b | 1186 | struct cleanup *cleanups; |
c5aa993b | 1187 | |
57e687d9 MS |
1188 | breakpoint = (struct breakpoint *) arg->data.pointer; |
1189 | function = (struct symbol *) arg->next->data.pointer; | |
1190 | cleanups = (struct cleanup *) arg->next->next->data.pointer; | |
43ff13b4 | 1191 | |
c5aa993b | 1192 | if (bpstat_find_breakpoint (stop_bpstat, breakpoint) != NULL |
43ff13b4 JM |
1193 | && function != 0) |
1194 | { | |
1195 | struct type *value_type; | |
43ff13b4 JM |
1196 | CORE_ADDR funcaddr; |
1197 | int struct_return; | |
1198 | ||
1199 | value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (function)); | |
1200 | if (!value_type) | |
8e65ff28 AC |
1201 | internal_error (__FILE__, __LINE__, |
1202 | "finish_command: function has no target type"); | |
c5aa993b | 1203 | |
43ff13b4 JM |
1204 | if (TYPE_CODE (value_type) == TYPE_CODE_VOID) |
1205 | { | |
0d06e24b | 1206 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
1207 | return; |
1208 | } | |
1209 | ||
1210 | funcaddr = BLOCK_START (SYMBOL_BLOCK_VALUE (function)); | |
1211 | ||
1212 | struct_return = using_struct_return (value_of_variable (function, NULL), | |
c5aa993b JM |
1213 | funcaddr, |
1214 | check_typedef (value_type), | |
11cf8741 | 1215 | BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function))); |
43ff13b4 | 1216 | |
11cf8741 | 1217 | print_return_value (struct_return, value_type); |
43ff13b4 | 1218 | } |
0d06e24b | 1219 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
1220 | } |
1221 | ||
c906108c SS |
1222 | /* "finish": Set a temporary breakpoint at the place |
1223 | the selected frame will return to, then continue. */ | |
1224 | ||
1225 | static void | |
fba45db2 | 1226 | finish_command (char *arg, int from_tty) |
c906108c SS |
1227 | { |
1228 | struct symtab_and_line sal; | |
1229 | register struct frame_info *frame; | |
1230 | register struct symbol *function; | |
1231 | struct breakpoint *breakpoint; | |
1232 | struct cleanup *old_chain; | |
0d06e24b | 1233 | struct continuation_arg *arg1, *arg2, *arg3; |
43ff13b4 JM |
1234 | |
1235 | int async_exec = 0; | |
1236 | ||
1237 | /* Find out whether we must run in the background. */ | |
1238 | if (arg != NULL) | |
1239 | async_exec = strip_bg_char (&arg); | |
1240 | ||
1241 | /* If we must run in the background, but the target can't do it, | |
1242 | error out. */ | |
6426a772 | 1243 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
1244 | error ("Asynchronous execution not supported on this target."); |
1245 | ||
1246 | /* If we are not asked to run in the bg, then prepare to run in the | |
1247 | foreground, synchronously. */ | |
6426a772 | 1248 | if (event_loop_p && !async_exec && target_can_async_p ()) |
c5aa993b | 1249 | { |
43ff13b4 | 1250 | /* Simulate synchronous execution */ |
6426a772 | 1251 | async_disable_stdin (); |
43ff13b4 | 1252 | } |
c906108c SS |
1253 | |
1254 | if (arg) | |
1255 | error ("The \"finish\" command does not take any arguments."); | |
1256 | if (!target_has_execution) | |
1257 | error ("The program is not running."); | |
1258 | if (selected_frame == NULL) | |
1259 | error ("No selected frame."); | |
1260 | ||
1261 | frame = get_prev_frame (selected_frame); | |
1262 | if (frame == 0) | |
1263 | error ("\"finish\" not meaningful in the outermost frame."); | |
1264 | ||
1265 | clear_proceed_status (); | |
1266 | ||
1267 | sal = find_pc_line (frame->pc, 0); | |
1268 | sal.pc = frame->pc; | |
1269 | ||
1270 | breakpoint = set_momentary_breakpoint (sal, frame, bp_finish); | |
1271 | ||
6426a772 | 1272 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 1273 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 1274 | else |
4d6140d9 | 1275 | old_chain = make_exec_cleanup_delete_breakpoint (breakpoint); |
c906108c SS |
1276 | |
1277 | /* Find the function we will return from. */ | |
1278 | ||
1279 | function = find_pc_function (selected_frame->pc); | |
1280 | ||
1281 | /* Print info on the selected frame, including level number | |
1282 | but not source. */ | |
1283 | if (from_tty) | |
1284 | { | |
1285 | printf_filtered ("Run till exit from "); | |
1286 | print_stack_frame (selected_frame, selected_frame_level, 0); | |
1287 | } | |
1288 | ||
43ff13b4 JM |
1289 | /* If running asynchronously and the target support asynchronous |
1290 | execution, set things up for the rest of the finish command to be | |
1291 | completed later on, when gdb has detected that the target has | |
1292 | stopped, in fetch_inferior_event. */ | |
6426a772 | 1293 | if (event_loop_p && target_can_async_p ()) |
43ff13b4 | 1294 | { |
c5aa993b | 1295 | arg1 = |
43ff13b4 | 1296 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); |
c5aa993b | 1297 | arg2 = |
43ff13b4 | 1298 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); |
0d06e24b JM |
1299 | arg3 = |
1300 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
43ff13b4 | 1301 | arg1->next = arg2; |
0d06e24b JM |
1302 | arg2->next = arg3; |
1303 | arg3->next = NULL; | |
57e687d9 MS |
1304 | arg1->data.pointer = breakpoint; |
1305 | arg2->data.pointer = function; | |
1306 | arg3->data.pointer = old_chain; | |
43ff13b4 JM |
1307 | add_continuation (finish_command_continuation, arg1); |
1308 | } | |
1309 | ||
c5aa993b | 1310 | proceed_to_finish = 1; /* We want stop_registers, please... */ |
2acceee2 | 1311 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); |
c906108c | 1312 | |
43ff13b4 JM |
1313 | /* Do this only if not running asynchronously or if the target |
1314 | cannot do async execution. Otherwise, complete this command when | |
c5aa993b | 1315 | the target actually stops, in fetch_inferior_event. */ |
6426a772 | 1316 | if (!event_loop_p || !target_can_async_p ()) |
c5aa993b JM |
1317 | { |
1318 | ||
1319 | /* Did we stop at our breakpoint? */ | |
1320 | if (bpstat_find_breakpoint (stop_bpstat, breakpoint) != NULL | |
1321 | && function != 0) | |
1322 | { | |
1323 | struct type *value_type; | |
c5aa993b JM |
1324 | CORE_ADDR funcaddr; |
1325 | int struct_return; | |
1326 | ||
1327 | value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (function)); | |
1328 | if (!value_type) | |
8e65ff28 AC |
1329 | internal_error (__FILE__, __LINE__, |
1330 | "finish_command: function has no target type"); | |
c5aa993b JM |
1331 | |
1332 | /* FIXME: Shouldn't we do the cleanups before returning? */ | |
1333 | if (TYPE_CODE (value_type) == TYPE_CODE_VOID) | |
1334 | return; | |
1335 | ||
1336 | funcaddr = BLOCK_START (SYMBOL_BLOCK_VALUE (function)); | |
1337 | ||
1338 | struct_return = | |
1339 | using_struct_return (value_of_variable (function, NULL), | |
1340 | funcaddr, | |
1341 | check_typedef (value_type), | |
1342 | BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function))); | |
1343 | ||
11cf8741 | 1344 | print_return_value (struct_return, value_type); |
c5aa993b JM |
1345 | } |
1346 | do_cleanups (old_chain); | |
1347 | } | |
c906108c SS |
1348 | } |
1349 | \f | |
1350 | /* ARGSUSED */ | |
1351 | static void | |
fba45db2 | 1352 | program_info (char *args, int from_tty) |
c906108c SS |
1353 | { |
1354 | bpstat bs = stop_bpstat; | |
1355 | int num = bpstat_num (&bs); | |
c5aa993b | 1356 | |
c906108c SS |
1357 | if (!target_has_execution) |
1358 | { | |
1359 | printf_filtered ("The program being debugged is not being run.\n"); | |
1360 | return; | |
1361 | } | |
1362 | ||
1363 | target_files_info (); | |
1364 | printf_filtered ("Program stopped at %s.\n", | |
c5aa993b | 1365 | local_hex_string ((unsigned long) stop_pc)); |
c906108c SS |
1366 | if (stop_step) |
1367 | printf_filtered ("It stopped after being stepped.\n"); | |
1368 | else if (num != 0) | |
1369 | { | |
1370 | /* There may be several breakpoints in the same place, so this | |
c5aa993b | 1371 | isn't as strange as it seems. */ |
c906108c SS |
1372 | while (num != 0) |
1373 | { | |
1374 | if (num < 0) | |
1375 | { | |
1376 | printf_filtered ("It stopped at a breakpoint that has "); | |
1377 | printf_filtered ("since been deleted.\n"); | |
1378 | } | |
1379 | else | |
1380 | printf_filtered ("It stopped at breakpoint %d.\n", num); | |
1381 | num = bpstat_num (&bs); | |
1382 | } | |
1383 | } | |
1384 | else if (stop_signal != TARGET_SIGNAL_0) | |
1385 | { | |
1386 | printf_filtered ("It stopped with signal %s, %s.\n", | |
1387 | target_signal_to_name (stop_signal), | |
1388 | target_signal_to_string (stop_signal)); | |
1389 | } | |
1390 | ||
1391 | if (!from_tty) | |
1392 | { | |
1393 | printf_filtered ("Type \"info stack\" or \"info registers\" "); | |
1394 | printf_filtered ("for more information.\n"); | |
1395 | } | |
1396 | } | |
1397 | \f | |
1398 | static void | |
fba45db2 | 1399 | environment_info (char *var, int from_tty) |
c906108c SS |
1400 | { |
1401 | if (var) | |
1402 | { | |
1403 | register char *val = get_in_environ (inferior_environ, var); | |
1404 | if (val) | |
1405 | { | |
1406 | puts_filtered (var); | |
1407 | puts_filtered (" = "); | |
1408 | puts_filtered (val); | |
1409 | puts_filtered ("\n"); | |
1410 | } | |
1411 | else | |
1412 | { | |
1413 | puts_filtered ("Environment variable \""); | |
1414 | puts_filtered (var); | |
1415 | puts_filtered ("\" not defined.\n"); | |
1416 | } | |
1417 | } | |
1418 | else | |
1419 | { | |
1420 | register char **vector = environ_vector (inferior_environ); | |
1421 | while (*vector) | |
1422 | { | |
1423 | puts_filtered (*vector++); | |
1424 | puts_filtered ("\n"); | |
1425 | } | |
1426 | } | |
1427 | } | |
1428 | ||
1429 | static void | |
fba45db2 | 1430 | set_environment_command (char *arg, int from_tty) |
c906108c SS |
1431 | { |
1432 | register char *p, *val, *var; | |
1433 | int nullset = 0; | |
1434 | ||
1435 | if (arg == 0) | |
1436 | error_no_arg ("environment variable and value"); | |
1437 | ||
1438 | /* Find seperation between variable name and value */ | |
1439 | p = (char *) strchr (arg, '='); | |
1440 | val = (char *) strchr (arg, ' '); | |
1441 | ||
1442 | if (p != 0 && val != 0) | |
1443 | { | |
1444 | /* We have both a space and an equals. If the space is before the | |
c5aa993b JM |
1445 | equals, walk forward over the spaces til we see a nonspace |
1446 | (possibly the equals). */ | |
c906108c SS |
1447 | if (p > val) |
1448 | while (*val == ' ') | |
1449 | val++; | |
1450 | ||
1451 | /* Now if the = is after the char following the spaces, | |
c5aa993b | 1452 | take the char following the spaces. */ |
c906108c SS |
1453 | if (p > val) |
1454 | p = val - 1; | |
1455 | } | |
1456 | else if (val != 0 && p == 0) | |
1457 | p = val; | |
1458 | ||
1459 | if (p == arg) | |
1460 | error_no_arg ("environment variable to set"); | |
1461 | ||
1462 | if (p == 0 || p[1] == 0) | |
1463 | { | |
1464 | nullset = 1; | |
1465 | if (p == 0) | |
1466 | p = arg + strlen (arg); /* So that savestring below will work */ | |
1467 | } | |
1468 | else | |
1469 | { | |
1470 | /* Not setting variable value to null */ | |
1471 | val = p + 1; | |
1472 | while (*val == ' ' || *val == '\t') | |
1473 | val++; | |
1474 | } | |
1475 | ||
c5aa993b JM |
1476 | while (p != arg && (p[-1] == ' ' || p[-1] == '\t')) |
1477 | p--; | |
c906108c SS |
1478 | |
1479 | var = savestring (arg, p - arg); | |
1480 | if (nullset) | |
1481 | { | |
1482 | printf_filtered ("Setting environment variable "); | |
1483 | printf_filtered ("\"%s\" to null value.\n", var); | |
1484 | set_in_environ (inferior_environ, var, ""); | |
1485 | } | |
1486 | else | |
1487 | set_in_environ (inferior_environ, var, val); | |
b8c9b27d | 1488 | xfree (var); |
c906108c SS |
1489 | } |
1490 | ||
1491 | static void | |
fba45db2 | 1492 | unset_environment_command (char *var, int from_tty) |
c906108c SS |
1493 | { |
1494 | if (var == 0) | |
1495 | { | |
1496 | /* If there is no argument, delete all environment variables. | |
c5aa993b | 1497 | Ask for confirmation if reading from the terminal. */ |
c906108c SS |
1498 | if (!from_tty || query ("Delete all environment variables? ")) |
1499 | { | |
1500 | free_environ (inferior_environ); | |
1501 | inferior_environ = make_environ (); | |
1502 | } | |
1503 | } | |
1504 | else | |
1505 | unset_in_environ (inferior_environ, var); | |
1506 | } | |
1507 | ||
1508 | /* Handle the execution path (PATH variable) */ | |
1509 | ||
1510 | static const char path_var_name[] = "PATH"; | |
1511 | ||
1512 | /* ARGSUSED */ | |
1513 | static void | |
fba45db2 | 1514 | path_info (char *args, int from_tty) |
c906108c SS |
1515 | { |
1516 | puts_filtered ("Executable and object file path: "); | |
1517 | puts_filtered (get_in_environ (inferior_environ, path_var_name)); | |
1518 | puts_filtered ("\n"); | |
1519 | } | |
1520 | ||
1521 | /* Add zero or more directories to the front of the execution path. */ | |
1522 | ||
1523 | static void | |
fba45db2 | 1524 | path_command (char *dirname, int from_tty) |
c906108c SS |
1525 | { |
1526 | char *exec_path; | |
1527 | char *env; | |
1528 | dont_repeat (); | |
1529 | env = get_in_environ (inferior_environ, path_var_name); | |
1530 | /* Can be null if path is not set */ | |
1531 | if (!env) | |
1532 | env = ""; | |
4fcf66da | 1533 | exec_path = xstrdup (env); |
c906108c SS |
1534 | mod_path (dirname, &exec_path); |
1535 | set_in_environ (inferior_environ, path_var_name, exec_path); | |
b8c9b27d | 1536 | xfree (exec_path); |
c906108c | 1537 | if (from_tty) |
c5aa993b | 1538 | path_info ((char *) NULL, from_tty); |
c906108c | 1539 | } |
c906108c | 1540 | \f |
c5aa993b | 1541 | |
c906108c SS |
1542 | #ifdef REGISTER_NAMES |
1543 | char *gdb_register_names[] = REGISTER_NAMES; | |
1544 | #endif | |
1545 | /* Print out the machine register regnum. If regnum is -1, | |
1546 | print all registers (fpregs == 1) or all non-float registers | |
1547 | (fpregs == 0). | |
1548 | ||
1549 | For most machines, having all_registers_info() print the | |
1550 | register(s) one per line is good enough. If a different format | |
1551 | is required, (eg, for MIPS or Pyramid 90x, which both have | |
1552 | lots of regs), or there is an existing convention for showing | |
1553 | all the registers, define the macro DO_REGISTERS_INFO(regnum, fp) | |
c5aa993b | 1554 | to provide that format. */ |
c906108c | 1555 | |
666e11c5 | 1556 | void |
fba45db2 | 1557 | do_registers_info (int regnum, int fpregs) |
c906108c SS |
1558 | { |
1559 | register int i; | |
64485362 | 1560 | int numregs = NUM_REGS + NUM_PSEUDO_REGS; |
b8adfa9f MS |
1561 | char *raw_buffer = (char*) alloca (MAX_REGISTER_RAW_SIZE); |
1562 | char *virtual_buffer = (char*) alloca (MAX_REGISTER_VIRTUAL_SIZE); | |
c906108c SS |
1563 | |
1564 | for (i = 0; i < numregs; i++) | |
1565 | { | |
c906108c | 1566 | /* Decide between printing all regs, nonfloat regs, or specific reg. */ |
c5aa993b JM |
1567 | if (regnum == -1) |
1568 | { | |
1569 | if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT && !fpregs) | |
1570 | continue; | |
1571 | } | |
1572 | else | |
1573 | { | |
1574 | if (i != regnum) | |
1575 | continue; | |
1576 | } | |
c906108c SS |
1577 | |
1578 | /* If the register name is empty, it is undefined for this | |
c5aa993b | 1579 | processor, so don't display anything. */ |
c906108c SS |
1580 | if (REGISTER_NAME (i) == NULL || *(REGISTER_NAME (i)) == '\0') |
1581 | continue; | |
1582 | ||
1583 | fputs_filtered (REGISTER_NAME (i), gdb_stdout); | |
1584 | print_spaces_filtered (15 - strlen (REGISTER_NAME (i)), gdb_stdout); | |
1585 | ||
1586 | /* Get the data in raw format. */ | |
1587 | if (read_relative_register_raw_bytes (i, raw_buffer)) | |
1588 | { | |
1589 | printf_filtered ("*value not available*\n"); | |
1590 | continue; | |
1591 | } | |
1592 | ||
1593 | /* Convert raw data to virtual format if necessary. */ | |
c906108c SS |
1594 | if (REGISTER_CONVERTIBLE (i)) |
1595 | { | |
1596 | REGISTER_CONVERT_TO_VIRTUAL (i, REGISTER_VIRTUAL_TYPE (i), | |
1597 | raw_buffer, virtual_buffer); | |
1598 | } | |
1599 | else | |
392a587b JM |
1600 | { |
1601 | memcpy (virtual_buffer, raw_buffer, | |
1602 | REGISTER_VIRTUAL_SIZE (i)); | |
1603 | } | |
c906108c SS |
1604 | |
1605 | /* If virtual format is floating, print it that way, and in raw hex. */ | |
1606 | if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT) | |
1607 | { | |
1608 | register int j; | |
1609 | ||
1610 | #ifdef INVALID_FLOAT | |
1611 | if (INVALID_FLOAT (virtual_buffer, REGISTER_VIRTUAL_SIZE (i))) | |
1612 | printf_filtered ("<invalid float>"); | |
1613 | else | |
1614 | #endif | |
1615 | val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0, | |
1616 | gdb_stdout, 0, 1, 0, Val_pretty_default); | |
1617 | ||
1618 | printf_filtered ("\t(raw 0x"); | |
1619 | for (j = 0; j < REGISTER_RAW_SIZE (i); j++) | |
1620 | { | |
d7449b42 | 1621 | register int idx = TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? j |
c5aa993b JM |
1622 | : REGISTER_RAW_SIZE (i) - 1 - j; |
1623 | printf_filtered ("%02x", (unsigned char) raw_buffer[idx]); | |
c906108c SS |
1624 | } |
1625 | printf_filtered (")"); | |
1626 | } | |
c906108c SS |
1627 | /* Else print as integer in hex and in decimal. */ |
1628 | else | |
1629 | { | |
1630 | val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0, | |
1631 | gdb_stdout, 'x', 1, 0, Val_pretty_default); | |
1632 | printf_filtered ("\t"); | |
1633 | val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0, | |
c5aa993b | 1634 | gdb_stdout, 0, 1, 0, Val_pretty_default); |
c906108c SS |
1635 | } |
1636 | ||
1637 | /* The SPARC wants to print even-numbered float regs as doubles | |
c5aa993b | 1638 | in addition to printing them as floats. */ |
c906108c SS |
1639 | #ifdef PRINT_REGISTER_HOOK |
1640 | PRINT_REGISTER_HOOK (i); | |
1641 | #endif | |
1642 | ||
1643 | printf_filtered ("\n"); | |
1644 | } | |
1645 | } | |
c906108c | 1646 | |
c906108c | 1647 | void |
fba45db2 | 1648 | registers_info (char *addr_exp, int fpregs) |
c906108c SS |
1649 | { |
1650 | int regnum, numregs; | |
1651 | register char *end; | |
1652 | ||
1653 | if (!target_has_registers) | |
1654 | error ("The program has no registers now."); | |
1655 | if (selected_frame == NULL) | |
1656 | error ("No selected frame."); | |
1657 | ||
1658 | if (!addr_exp) | |
1659 | { | |
c5aa993b | 1660 | DO_REGISTERS_INFO (-1, fpregs); |
c906108c SS |
1661 | return; |
1662 | } | |
1663 | ||
1664 | do | |
c5aa993b | 1665 | { |
c906108c SS |
1666 | if (addr_exp[0] == '$') |
1667 | addr_exp++; | |
1668 | end = addr_exp; | |
1669 | while (*end != '\0' && *end != ' ' && *end != '\t') | |
1670 | ++end; | |
64485362 | 1671 | numregs = NUM_REGS + NUM_PSEUDO_REGS; |
c906108c SS |
1672 | |
1673 | regnum = target_map_name_to_register (addr_exp, end - addr_exp); | |
c5aa993b | 1674 | if (regnum >= 0) |
c906108c SS |
1675 | goto found; |
1676 | ||
1677 | regnum = numregs; | |
1678 | ||
1679 | if (*addr_exp >= '0' && *addr_exp <= '9') | |
c5aa993b JM |
1680 | regnum = atoi (addr_exp); /* Take a number */ |
1681 | if (regnum >= numregs) /* Bad name, or bad number */ | |
c906108c SS |
1682 | error ("%.*s: invalid register", end - addr_exp, addr_exp); |
1683 | ||
c5aa993b JM |
1684 | found: |
1685 | DO_REGISTERS_INFO (regnum, fpregs); | |
c906108c SS |
1686 | |
1687 | addr_exp = end; | |
1688 | while (*addr_exp == ' ' || *addr_exp == '\t') | |
1689 | ++addr_exp; | |
c5aa993b JM |
1690 | } |
1691 | while (*addr_exp != '\0'); | |
c906108c SS |
1692 | } |
1693 | ||
1694 | void | |
fba45db2 | 1695 | all_registers_info (char *addr_exp, int from_tty) |
c906108c SS |
1696 | { |
1697 | registers_info (addr_exp, 1); | |
1698 | } | |
1699 | ||
1700 | void | |
fba45db2 | 1701 | nofp_registers_info (char *addr_exp, int from_tty) |
c906108c SS |
1702 | { |
1703 | registers_info (addr_exp, 0); | |
1704 | } | |
c906108c | 1705 | \f |
c5aa993b | 1706 | |
c906108c SS |
1707 | /* |
1708 | * TODO: | |
1709 | * Should save/restore the tty state since it might be that the | |
1710 | * program to be debugged was started on this tty and it wants | |
1711 | * the tty in some state other than what we want. If it's running | |
1712 | * on another terminal or without a terminal, then saving and | |
1713 | * restoring the tty state is a harmless no-op. | |
1714 | * This only needs to be done if we are attaching to a process. | |
1715 | */ | |
1716 | ||
1717 | /* | |
1718 | attach_command -- | |
1719 | takes a program started up outside of gdb and ``attaches'' to it. | |
1720 | This stops it cold in its tracks and allows us to start debugging it. | |
1721 | and wait for the trace-trap that results from attaching. */ | |
1722 | ||
1723 | void | |
fba45db2 | 1724 | attach_command (char *args, int from_tty) |
c906108c | 1725 | { |
c5aa993b JM |
1726 | char *exec_file; |
1727 | char *full_exec_path = NULL; | |
c906108c | 1728 | |
c5aa993b | 1729 | dont_repeat (); /* Not for the faint of heart */ |
c906108c SS |
1730 | |
1731 | if (target_has_execution) | |
1732 | { | |
1733 | if (query ("A program is being debugged already. Kill it? ")) | |
1734 | target_kill (); | |
1735 | else | |
1736 | error ("Not killed."); | |
1737 | } | |
1738 | ||
1739 | target_attach (args, from_tty); | |
1740 | ||
1741 | /* Set up the "saved terminal modes" of the inferior | |
1742 | based on what modes we are starting it with. */ | |
1743 | target_terminal_init (); | |
1744 | ||
1745 | /* Install inferior's terminal modes. */ | |
1746 | target_terminal_inferior (); | |
1747 | ||
1748 | /* Set up execution context to know that we should return from | |
1749 | wait_for_inferior as soon as the target reports a stop. */ | |
1750 | init_wait_for_inferior (); | |
1751 | clear_proceed_status (); | |
c906108c SS |
1752 | |
1753 | /* No traps are generated when attaching to inferior under Mach 3 | |
1754 | or GNU hurd. */ | |
1755 | #ifndef ATTACH_NO_WAIT | |
00373e55 | 1756 | stop_soon_quietly = 1; |
c906108c SS |
1757 | wait_for_inferior (); |
1758 | #endif | |
1759 | ||
1760 | /* | |
1761 | * If no exec file is yet known, try to determine it from the | |
1762 | * process itself. | |
1763 | */ | |
1764 | exec_file = (char *) get_exec_file (0); | |
c5aa993b JM |
1765 | if (!exec_file) |
1766 | { | |
39f77062 | 1767 | exec_file = target_pid_to_exec_file (PIDGET (inferior_ptid)); |
c5aa993b JM |
1768 | if (exec_file) |
1769 | { | |
1770 | /* It's possible we don't have a full path, but rather just a | |
1771 | filename. Some targets, such as HP-UX, don't provide the | |
1772 | full path, sigh. | |
1773 | ||
1774 | Attempt to qualify the filename against the source path. | |
1775 | (If that fails, we'll just fall back on the original | |
1776 | filename. Not much more we can do...) | |
1777 | */ | |
1778 | if (!source_full_path_of (exec_file, &full_exec_path)) | |
1779 | full_exec_path = savestring (exec_file, strlen (exec_file)); | |
1780 | ||
1781 | exec_file_attach (full_exec_path, from_tty); | |
1adeb98a | 1782 | symbol_file_add_main (full_exec_path, from_tty); |
c5aa993b | 1783 | } |
c906108c | 1784 | } |
c906108c SS |
1785 | |
1786 | #ifdef SOLIB_ADD | |
990f9fe3 FF |
1787 | /* Add shared library symbols from the newly attached process, if any. */ |
1788 | SOLIB_ADD ((char *) 0, from_tty, ¤t_target, auto_solib_add); | |
1789 | re_enable_breakpoints_in_shlibs (); | |
c906108c SS |
1790 | #endif |
1791 | ||
1792 | /* Take any necessary post-attaching actions for this platform. | |
c5aa993b | 1793 | */ |
39f77062 | 1794 | target_post_attach (PIDGET (inferior_ptid)); |
c906108c SS |
1795 | |
1796 | normal_stop (); | |
6426a772 JM |
1797 | |
1798 | if (attach_hook) | |
1799 | attach_hook (); | |
c906108c SS |
1800 | } |
1801 | ||
1802 | /* | |
1803 | * detach_command -- | |
1804 | * takes a program previously attached to and detaches it. | |
1805 | * The program resumes execution and will no longer stop | |
1806 | * on signals, etc. We better not have left any breakpoints | |
1807 | * in the program or it'll die when it hits one. For this | |
1808 | * to work, it may be necessary for the process to have been | |
1809 | * previously attached. It *might* work if the program was | |
1810 | * started via the normal ptrace (PTRACE_TRACEME). | |
1811 | */ | |
1812 | ||
1813 | static void | |
fba45db2 | 1814 | detach_command (char *args, int from_tty) |
c906108c | 1815 | { |
c5aa993b | 1816 | dont_repeat (); /* Not for the faint of heart */ |
c906108c SS |
1817 | target_detach (args, from_tty); |
1818 | #if defined(SOLIB_RESTART) | |
1819 | SOLIB_RESTART (); | |
1820 | #endif | |
6426a772 JM |
1821 | if (detach_hook) |
1822 | detach_hook (); | |
c906108c SS |
1823 | } |
1824 | ||
43ff13b4 JM |
1825 | /* Stop the execution of the target while running in async mode, in |
1826 | the backgound. */ | |
8926118c | 1827 | |
8b93c638 | 1828 | void |
fba45db2 | 1829 | interrupt_target_command_wrapper (char *args, int from_tty) |
8b93c638 JM |
1830 | { |
1831 | interrupt_target_command (args, from_tty); | |
1832 | } | |
8926118c | 1833 | |
43ff13b4 | 1834 | static void |
fba45db2 | 1835 | interrupt_target_command (char *args, int from_tty) |
43ff13b4 | 1836 | { |
6426a772 | 1837 | if (event_loop_p && target_can_async_p ()) |
43ff13b4 | 1838 | { |
c5aa993b | 1839 | dont_repeat (); /* Not for the faint of heart */ |
43ff13b4 JM |
1840 | target_stop (); |
1841 | } | |
1842 | } | |
1843 | ||
c906108c SS |
1844 | /* ARGSUSED */ |
1845 | static void | |
fba45db2 | 1846 | float_info (char *addr_exp, int from_tty) |
c906108c SS |
1847 | { |
1848 | #ifdef FLOAT_INFO | |
1849 | FLOAT_INFO; | |
1850 | #else | |
1851 | printf_filtered ("No floating point info available for this processor.\n"); | |
1852 | #endif | |
1853 | } | |
1854 | \f | |
1855 | /* ARGSUSED */ | |
1856 | static void | |
fba45db2 | 1857 | unset_command (char *args, int from_tty) |
c906108c SS |
1858 | { |
1859 | printf_filtered ("\"unset\" must be followed by the name of "); | |
1860 | printf_filtered ("an unset subcommand.\n"); | |
1861 | help_list (unsetlist, "unset ", -1, gdb_stdout); | |
1862 | } | |
1863 | ||
1864 | void | |
fba45db2 | 1865 | _initialize_infcmd (void) |
c906108c SS |
1866 | { |
1867 | struct cmd_list_element *c; | |
c5aa993b | 1868 | |
c94fdfd0 EZ |
1869 | c = add_com ("tty", class_run, tty_command, |
1870 | "Set terminal for future runs of program being debugged."); | |
fa58ee11 | 1871 | c->completer = filename_completer; |
c906108c | 1872 | |
fa58ee11 EZ |
1873 | c = add_set_cmd ("args", class_run, var_string_noescape, |
1874 | (char *) &inferior_args, | |
1875 | "Set argument list to give program being debugged when it is started.\n\ | |
c906108c | 1876 | Follow this command with any number of args, to be passed to the program.", |
fa58ee11 | 1877 | &setlist); |
fa58ee11 | 1878 | c->completer = filename_completer; |
552c04a7 TT |
1879 | c->function.sfunc = notice_args_set; |
1880 | c = add_show_from_set (c, &showlist); | |
1881 | c->pre_show_hook = notice_args_read; | |
c906108c SS |
1882 | |
1883 | c = add_cmd | |
1884 | ("environment", no_class, environment_info, | |
1885 | "The environment to give the program, or one variable's value.\n\ | |
1886 | With an argument VAR, prints the value of environment variable VAR to\n\ | |
1887 | give the program being debugged. With no arguments, prints the entire\n\ | |
1888 | environment to be given to the program.", &showlist); | |
1889 | c->completer = noop_completer; | |
1890 | ||
1891 | add_prefix_cmd ("unset", no_class, unset_command, | |
1892 | "Complement to certain \"set\" commands", | |
1893 | &unsetlist, "unset ", 0, &cmdlist); | |
c5aa993b | 1894 | |
c906108c | 1895 | c = add_cmd ("environment", class_run, unset_environment_command, |
c5aa993b | 1896 | "Cancel environment variable VAR for the program.\n\ |
c906108c | 1897 | This does not affect the program until the next \"run\" command.", |
c5aa993b | 1898 | &unsetlist); |
c906108c SS |
1899 | c->completer = noop_completer; |
1900 | ||
1901 | c = add_cmd ("environment", class_run, set_environment_command, | |
1902 | "Set environment variable value to give the program.\n\ | |
1903 | Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\ | |
1904 | VALUES of environment variables are uninterpreted strings.\n\ | |
1905 | This does not affect the program until the next \"run\" command.", | |
c5aa993b | 1906 | &setlist); |
c906108c | 1907 | c->completer = noop_completer; |
c5aa993b | 1908 | |
fa58ee11 EZ |
1909 | c = add_com ("path", class_files, path_command, |
1910 | "Add directory DIR(s) to beginning of search path for object files.\n\ | |
c906108c SS |
1911 | $cwd in the path means the current working directory.\n\ |
1912 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
1913 | directories, separated by colons. These directories are searched to find\n\ | |
1914 | fully linked executable files and separately compiled object files as needed."); | |
fa58ee11 | 1915 | c->completer = filename_completer; |
c906108c SS |
1916 | |
1917 | c = add_cmd ("paths", no_class, path_info, | |
c5aa993b | 1918 | "Current search path for finding object files.\n\ |
c906108c SS |
1919 | $cwd in the path means the current working directory.\n\ |
1920 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
1921 | directories, separated by colons. These directories are searched to find\n\ | |
1922 | fully linked executable files and separately compiled object files as needed.", | |
1923 | &showlist); | |
1924 | c->completer = noop_completer; | |
1925 | ||
c5aa993b JM |
1926 | add_com ("attach", class_run, attach_command, |
1927 | "Attach to a process or file outside of GDB.\n\ | |
c906108c SS |
1928 | This command attaches to another target, of the same type as your last\n\ |
1929 | \"target\" command (\"info files\" will show your target stack).\n\ | |
1930 | The command may take as argument a process id or a device file.\n\ | |
1931 | For a process id, you must have permission to send the process a signal,\n\ | |
1932 | and it must have the same effective uid as the debugger.\n\ | |
1933 | When using \"attach\" with a process id, the debugger finds the\n\ | |
1934 | program running in the process, looking first in the current working\n\ | |
1935 | directory, or (if not found there) using the source file search path\n\ | |
1936 | (see the \"directory\" command). You can also use the \"file\" command\n\ | |
1937 | to specify the program, and to load its symbol table."); | |
1938 | ||
1939 | add_com ("detach", class_run, detach_command, | |
1940 | "Detach a process or file previously attached.\n\ | |
1941 | If a process, it is no longer traced, and it continues its execution. If\n\ | |
1942 | you were debugging a file, the file is closed and gdb no longer accesses it."); | |
1943 | ||
1944 | add_com ("signal", class_run, signal_command, | |
1945 | "Continue program giving it signal specified by the argument.\n\ | |
1946 | An argument of \"0\" means continue program without giving it a signal."); | |
1947 | ||
1948 | add_com ("stepi", class_run, stepi_command, | |
1949 | "Step one instruction exactly.\n\ | |
1950 | Argument N means do this N times (or till program stops for another reason)."); | |
1951 | add_com_alias ("si", "stepi", class_alias, 0); | |
1952 | ||
1953 | add_com ("nexti", class_run, nexti_command, | |
1954 | "Step one instruction, but proceed through subroutine calls.\n\ | |
1955 | Argument N means do this N times (or till program stops for another reason)."); | |
1956 | add_com_alias ("ni", "nexti", class_alias, 0); | |
1957 | ||
1958 | add_com ("finish", class_run, finish_command, | |
1959 | "Execute until selected stack frame returns.\n\ | |
1960 | Upon return, the value returned is printed and put in the value history."); | |
1961 | ||
1962 | add_com ("next", class_run, next_command, | |
1963 | "Step program, proceeding through subroutine calls.\n\ | |
1964 | Like the \"step\" command as long as subroutine calls do not happen;\n\ | |
1965 | when they do, the call is treated as one instruction.\n\ | |
1966 | Argument N means do this N times (or till program stops for another reason)."); | |
1967 | add_com_alias ("n", "next", class_run, 1); | |
1968 | if (xdb_commands) | |
c5aa993b | 1969 | add_com_alias ("S", "next", class_run, 1); |
c906108c SS |
1970 | |
1971 | add_com ("step", class_run, step_command, | |
1972 | "Step program until it reaches a different source line.\n\ | |
1973 | Argument N means do this N times (or till program stops for another reason)."); | |
1974 | add_com_alias ("s", "step", class_run, 1); | |
1975 | ||
c94fdfd0 EZ |
1976 | c = add_com ("until", class_run, until_command, |
1977 | "Execute until the program reaches a source line greater than the current\n\ | |
c906108c SS |
1978 | or a specified line or address or function (same args as break command).\n\ |
1979 | Execution will also stop upon exit from the current stack frame."); | |
c94fdfd0 | 1980 | c->completer = location_completer; |
c906108c | 1981 | add_com_alias ("u", "until", class_run, 1); |
c5aa993b | 1982 | |
c94fdfd0 EZ |
1983 | c = add_com ("jump", class_run, jump_command, |
1984 | "Continue program being debugged at specified line or address.\n\ | |
c906108c SS |
1985 | Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\ |
1986 | for an address to start at."); | |
c94fdfd0 | 1987 | c->completer = location_completer; |
c906108c | 1988 | |
b83266a0 | 1989 | if (xdb_commands) |
c94fdfd0 EZ |
1990 | { |
1991 | c = add_com ("go", class_run, go_command, | |
1992 | "Usage: go <location>\n\ | |
c906108c SS |
1993 | Continue program being debugged, stopping at specified line or \n\ |
1994 | address.\n\ | |
1995 | Give as argument either LINENUM or *ADDR, where ADDR is an \n\ | |
1996 | expression for an address to start at.\n\ | |
1997 | This command is a combination of tbreak and jump."); | |
c94fdfd0 EZ |
1998 | c->completer = location_completer; |
1999 | } | |
b83266a0 | 2000 | |
c906108c | 2001 | if (xdb_commands) |
c5aa993b | 2002 | add_com_alias ("g", "go", class_run, 1); |
c906108c SS |
2003 | |
2004 | add_com ("continue", class_run, continue_command, | |
2005 | "Continue program being debugged, after signal or breakpoint.\n\ | |
2006 | If proceeding from breakpoint, a number N may be used as an argument,\n\ | |
2007 | which means to set the ignore count of that breakpoint to N - 1 (so that\n\ | |
2008 | the breakpoint won't break until the Nth time it is reached)."); | |
2009 | add_com_alias ("c", "cont", class_run, 1); | |
2010 | add_com_alias ("fg", "cont", class_run, 1); | |
2011 | ||
fa58ee11 | 2012 | c = add_com ("run", class_run, run_command, |
c906108c SS |
2013 | "Start debugged program. You may specify arguments to give it.\n\ |
2014 | Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\ | |
2015 | Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\ | |
2016 | With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\ | |
2017 | To cancel previous arguments and run with no arguments,\n\ | |
2018 | use \"set args\" without arguments."); | |
fa58ee11 | 2019 | c->completer = filename_completer; |
c906108c SS |
2020 | add_com_alias ("r", "run", class_run, 1); |
2021 | if (xdb_commands) | |
2022 | add_com ("R", class_run, run_no_args_command, | |
c5aa993b | 2023 | "Start debugged program with no arguments."); |
c906108c | 2024 | |
43ff13b4 JM |
2025 | add_com ("interrupt", class_run, interrupt_target_command, |
2026 | "Interrupt the execution of the debugged program."); | |
2027 | ||
c906108c | 2028 | add_info ("registers", nofp_registers_info, |
c5aa993b | 2029 | "List of integer registers and their contents, for selected stack frame.\n\ |
c906108c | 2030 | Register name as argument means describe only that register."); |
7194c49b | 2031 | add_info_alias ("r", "registers", 1); |
c906108c SS |
2032 | |
2033 | if (xdb_commands) | |
c5aa993b JM |
2034 | add_com ("lr", class_info, nofp_registers_info, |
2035 | "List of integer registers and their contents, for selected stack frame.\n\ | |
c906108c SS |
2036 | Register name as argument means describe only that register."); |
2037 | add_info ("all-registers", all_registers_info, | |
c5aa993b | 2038 | "List of all registers and their contents, for selected stack frame.\n\ |
c906108c SS |
2039 | Register name as argument means describe only that register."); |
2040 | ||
2041 | add_info ("program", program_info, | |
2042 | "Execution status of the program."); | |
2043 | ||
2044 | add_info ("float", float_info, | |
2045 | "Print the status of the floating point unit\n"); | |
2046 | ||
c906108c SS |
2047 | inferior_environ = make_environ (); |
2048 | init_environ (inferior_environ); | |
2049 | } |