Commit | Line | Data |
---|---|---|
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 | |
9f60d481 | 251 | notice_args_read (char *args, int from_tty, struct cmd_list_element *c) |
552c04a7 TT |
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 | ||
c906108c SS |
392 | /* Purge old solib objfiles. */ |
393 | objfile_purge_solibs (); | |
394 | ||
395 | do_run_cleanups (NULL); | |
396 | ||
39ad761d JB |
397 | /* The comment here used to read, "The exec file is re-read every |
398 | time we do a generic_mourn_inferior, so we just have to worry | |
399 | about the symbol file." The `generic_mourn_inferior' function | |
400 | gets called whenever the program exits. However, suppose the | |
401 | program exits, and *then* the executable file changes? We need | |
402 | to check again here. Since reopen_exec_file doesn't do anything | |
403 | if the timestamp hasn't changed, I don't see the harm. */ | |
404 | reopen_exec_file (); | |
c906108c SS |
405 | reread_symbols (); |
406 | ||
39ad761d JB |
407 | exec_file = (char *) get_exec_file (0); |
408 | ||
c906108c SS |
409 | /* We keep symbols from add-symbol-file, on the grounds that the |
410 | user might want to add some symbols before running the program | |
411 | (right?). But sometimes (dynamic loading where the user manually | |
412 | introduces the new symbols with add-symbol-file), the code which | |
413 | the symbols describe does not persist between runs. Currently | |
414 | the user has to manually nuke all symbols between runs if they | |
415 | want them to go away (PR 2207). This is probably reasonable. */ | |
416 | ||
43ff13b4 | 417 | if (!args) |
6426a772 JM |
418 | { |
419 | if (event_loop_p && target_can_async_p ()) | |
420 | async_disable_stdin (); | |
421 | } | |
43ff13b4 | 422 | else |
c906108c | 423 | { |
43ff13b4 JM |
424 | int async_exec = strip_bg_char (&args); |
425 | ||
426 | /* If we get a request for running in the bg but the target | |
427 | doesn't support it, error out. */ | |
6426a772 | 428 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
429 | error ("Asynchronous execution not supported on this target."); |
430 | ||
431 | /* If we don't get a request of running in the bg, then we need | |
c5aa993b | 432 | to simulate synchronous (fg) execution. */ |
6426a772 | 433 | if (event_loop_p && !async_exec && target_can_async_p ()) |
43ff13b4 JM |
434 | { |
435 | /* Simulate synchronous execution */ | |
6426a772 | 436 | async_disable_stdin (); |
43ff13b4 JM |
437 | } |
438 | ||
439 | /* If there were other args, beside '&', process them. */ | |
440 | if (args) | |
441 | { | |
07091751 FN |
442 | char *old_args = set_inferior_args (xstrdup (args)); |
443 | xfree (old_args); | |
43ff13b4 | 444 | } |
c906108c SS |
445 | } |
446 | ||
447 | if (from_tty) | |
448 | { | |
8b93c638 JM |
449 | ui_out_field_string (uiout, NULL, "Starting program"); |
450 | ui_out_text (uiout, ": "); | |
451 | if (exec_file) | |
452 | ui_out_field_string (uiout, "execfile", exec_file); | |
453 | ui_out_spaces (uiout, 1); | |
552c04a7 TT |
454 | /* We call get_inferior_args() because we might need to compute |
455 | the value now. */ | |
456 | ui_out_field_string (uiout, "infargs", get_inferior_args ()); | |
8b93c638 JM |
457 | ui_out_text (uiout, "\n"); |
458 | ui_out_flush (uiout); | |
c906108c SS |
459 | } |
460 | ||
552c04a7 TT |
461 | /* We call get_inferior_args() because we might need to compute |
462 | the value now. */ | |
463 | target_create_inferior (exec_file, get_inferior_args (), | |
c906108c SS |
464 | environ_vector (inferior_environ)); |
465 | } | |
466 | ||
467 | ||
468 | static void | |
fba45db2 | 469 | run_no_args_command (char *args, int from_tty) |
c906108c | 470 | { |
07091751 FN |
471 | char *old_args = set_inferior_args (xstrdup ("")); |
472 | xfree (old_args); | |
c906108c | 473 | } |
c906108c | 474 | \f |
c5aa993b | 475 | |
c906108c | 476 | void |
fba45db2 | 477 | continue_command (char *proc_count_exp, int from_tty) |
c906108c | 478 | { |
c5aa993b | 479 | int async_exec = 0; |
c906108c SS |
480 | ERROR_NO_INFERIOR; |
481 | ||
43ff13b4 JM |
482 | /* Find out whether we must run in the background. */ |
483 | if (proc_count_exp != NULL) | |
484 | async_exec = strip_bg_char (&proc_count_exp); | |
485 | ||
486 | /* If we must run in the background, but the target can't do it, | |
487 | error out. */ | |
6426a772 | 488 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
489 | error ("Asynchronous execution not supported on this target."); |
490 | ||
491 | /* If we are not asked to run in the bg, then prepare to run in the | |
492 | foreground, synchronously. */ | |
6426a772 | 493 | if (event_loop_p && !async_exec && target_can_async_p ()) |
c5aa993b | 494 | { |
43ff13b4 | 495 | /* Simulate synchronous execution */ |
6426a772 | 496 | async_disable_stdin (); |
43ff13b4 | 497 | } |
c906108c | 498 | |
43ff13b4 JM |
499 | /* If have argument (besides '&'), set proceed count of breakpoint |
500 | we stopped at. */ | |
c906108c SS |
501 | if (proc_count_exp != NULL) |
502 | { | |
503 | bpstat bs = stop_bpstat; | |
504 | int num = bpstat_num (&bs); | |
505 | if (num == 0 && from_tty) | |
506 | { | |
507 | printf_filtered | |
508 | ("Not stopped at any breakpoint; argument ignored.\n"); | |
509 | } | |
510 | while (num != 0) | |
511 | { | |
512 | set_ignore_count (num, | |
bb518678 | 513 | parse_and_eval_long (proc_count_exp) - 1, |
c906108c SS |
514 | from_tty); |
515 | /* set_ignore_count prints a message ending with a period. | |
516 | So print two spaces before "Continuing.". */ | |
517 | if (from_tty) | |
518 | printf_filtered (" "); | |
519 | num = bpstat_num (&bs); | |
520 | } | |
521 | } | |
522 | ||
523 | if (from_tty) | |
524 | printf_filtered ("Continuing.\n"); | |
525 | ||
526 | clear_proceed_status (); | |
527 | ||
2acceee2 | 528 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); |
c906108c SS |
529 | } |
530 | \f | |
531 | /* Step until outside of current statement. */ | |
532 | ||
533 | /* ARGSUSED */ | |
534 | static void | |
fba45db2 | 535 | step_command (char *count_string, int from_tty) |
c906108c SS |
536 | { |
537 | step_1 (0, 0, count_string); | |
538 | } | |
539 | ||
540 | /* Likewise, but skip over subroutine calls as if single instructions. */ | |
541 | ||
542 | /* ARGSUSED */ | |
543 | static void | |
fba45db2 | 544 | next_command (char *count_string, int from_tty) |
c906108c SS |
545 | { |
546 | step_1 (1, 0, count_string); | |
547 | } | |
548 | ||
549 | /* Likewise, but step only one instruction. */ | |
550 | ||
551 | /* ARGSUSED */ | |
552 | void | |
fba45db2 | 553 | stepi_command (char *count_string, int from_tty) |
c906108c SS |
554 | { |
555 | step_1 (0, 1, count_string); | |
556 | } | |
557 | ||
558 | /* ARGSUSED */ | |
559 | void | |
fba45db2 | 560 | nexti_command (char *count_string, int from_tty) |
c906108c SS |
561 | { |
562 | step_1 (1, 1, count_string); | |
563 | } | |
564 | ||
74b7792f AC |
565 | static void |
566 | disable_longjmp_breakpoint_cleanup (void *ignore) | |
567 | { | |
568 | disable_longjmp_breakpoint (); | |
569 | } | |
570 | ||
c906108c | 571 | static void |
fba45db2 | 572 | step_1 (int skip_subroutines, int single_inst, char *count_string) |
c906108c SS |
573 | { |
574 | register int count = 1; | |
575 | struct frame_info *frame; | |
576 | struct cleanup *cleanups = 0; | |
43ff13b4 | 577 | int async_exec = 0; |
c5aa993b | 578 | |
c906108c | 579 | ERROR_NO_INFERIOR; |
43ff13b4 JM |
580 | |
581 | if (count_string) | |
582 | async_exec = strip_bg_char (&count_string); | |
c5aa993b | 583 | |
43ff13b4 JM |
584 | /* If we get a request for running in the bg but the target |
585 | doesn't support it, error out. */ | |
6426a772 | 586 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
587 | error ("Asynchronous execution not supported on this target."); |
588 | ||
589 | /* If we don't get a request of running in the bg, then we need | |
590 | to simulate synchronous (fg) execution. */ | |
6426a772 | 591 | if (event_loop_p && !async_exec && target_can_async_p ()) |
43ff13b4 JM |
592 | { |
593 | /* Simulate synchronous execution */ | |
6426a772 | 594 | async_disable_stdin (); |
43ff13b4 JM |
595 | } |
596 | ||
bb518678 | 597 | count = count_string ? parse_and_eval_long (count_string) : 1; |
c906108c | 598 | |
c5aa993b | 599 | if (!single_inst || skip_subroutines) /* leave si command alone */ |
c906108c | 600 | { |
c5aa993b | 601 | enable_longjmp_breakpoint (); |
c2d11a7d | 602 | if (!event_loop_p || !target_can_async_p ()) |
74b7792f | 603 | cleanups = make_cleanup (disable_longjmp_breakpoint_cleanup, 0 /*ignore*/); |
c2d11a7d | 604 | else |
74b7792f | 605 | make_exec_cleanup (disable_longjmp_breakpoint_cleanup, 0 /*ignore*/); |
c2d11a7d JM |
606 | } |
607 | ||
608 | /* In synchronous case, all is well, just use the regular for loop. */ | |
609 | if (!event_loop_p || !target_can_async_p ()) | |
610 | { | |
611 | for (; count > 0; count--) | |
612 | { | |
613 | clear_proceed_status (); | |
614 | ||
615 | frame = get_current_frame (); | |
616 | if (!frame) /* Avoid coredump here. Why tho? */ | |
617 | error ("No current frame"); | |
618 | step_frame_address = FRAME_FP (frame); | |
619 | step_sp = read_sp (); | |
620 | ||
621 | if (!single_inst) | |
622 | { | |
623 | find_pc_line_pc_range (stop_pc, &step_range_start, &step_range_end); | |
624 | if (step_range_end == 0) | |
625 | { | |
626 | char *name; | |
627 | if (find_pc_partial_function (stop_pc, &name, &step_range_start, | |
628 | &step_range_end) == 0) | |
629 | error ("Cannot find bounds of current function"); | |
630 | ||
631 | target_terminal_ours (); | |
632 | printf_filtered ("\ | |
633 | Single stepping until exit from function %s, \n\ | |
634 | which has no line number information.\n", name); | |
635 | } | |
636 | } | |
637 | else | |
638 | { | |
639 | /* Say we are stepping, but stop after one insn whatever it does. */ | |
640 | step_range_start = step_range_end = 1; | |
641 | if (!skip_subroutines) | |
642 | /* It is stepi. | |
643 | Don't step over function calls, not even to functions lacking | |
644 | line numbers. */ | |
5fbbeb29 | 645 | step_over_calls = STEP_OVER_NONE; |
c2d11a7d JM |
646 | } |
647 | ||
648 | if (skip_subroutines) | |
5fbbeb29 | 649 | step_over_calls = STEP_OVER_ALL; |
c2d11a7d JM |
650 | |
651 | step_multi = (count > 1); | |
652 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); | |
653 | ||
654 | if (!stop_step) | |
655 | break; | |
656 | ||
657 | /* FIXME: On nexti, this may have already been done (when we hit the | |
658 | step resume break, I think). Probably this should be moved to | |
659 | wait_for_inferior (near the top). */ | |
660 | #if defined (SHIFT_INST_REGS) | |
661 | SHIFT_INST_REGS (); | |
662 | #endif | |
663 | } | |
664 | ||
665 | if (!single_inst || skip_subroutines) | |
666 | do_cleanups (cleanups); | |
667 | return; | |
668 | } | |
669 | /* In case of asynchronous target things get complicated, do only | |
670 | one step for now, before returning control to the event loop. Let | |
671 | the continuation figure out how many other steps we need to do, | |
672 | and handle them one at the time, through step_once(). */ | |
673 | else | |
674 | { | |
675 | if (event_loop_p && target_can_async_p ()) | |
676 | step_once (skip_subroutines, single_inst, count); | |
c906108c | 677 | } |
c2d11a7d | 678 | } |
c906108c | 679 | |
c2d11a7d JM |
680 | /* Called after we are done with one step operation, to check whether |
681 | we need to step again, before we print the prompt and return control | |
682 | to the user. If count is > 1, we will need to do one more call to | |
683 | proceed(), via step_once(). Basically it is like step_once and | |
684 | step_1_continuation are co-recursive. */ | |
685 | static void | |
fba45db2 | 686 | step_1_continuation (struct continuation_arg *arg) |
c2d11a7d | 687 | { |
57e687d9 MS |
688 | int count; |
689 | int skip_subroutines; | |
690 | int single_inst; | |
691 | ||
692 | skip_subroutines = arg->data.integer; | |
693 | single_inst = arg->next->data.integer; | |
694 | count = arg->next->next->data.integer; | |
695 | ||
696 | if (stop_step) | |
697 | { | |
698 | /* FIXME: On nexti, this may have already been done (when we hit the | |
699 | step resume break, I think). Probably this should be moved to | |
700 | wait_for_inferior (near the top). */ | |
c2d11a7d | 701 | #if defined (SHIFT_INST_REGS) |
57e687d9 | 702 | SHIFT_INST_REGS (); |
c2d11a7d | 703 | #endif |
57e687d9 MS |
704 | step_once (skip_subroutines, single_inst, count - 1); |
705 | } | |
706 | else | |
707 | if (!single_inst || skip_subroutines) | |
708 | do_exec_cleanups (ALL_CLEANUPS); | |
c2d11a7d JM |
709 | } |
710 | ||
711 | /* Do just one step operation. If count >1 we will have to set up a | |
712 | continuation to be done after the target stops (after this one | |
713 | step). This is useful to implement the 'step n' kind of commands, in | |
714 | case of asynchronous targets. We had to split step_1 into two parts, | |
715 | one to be done before proceed() and one afterwards. This function is | |
716 | called in case of step n with n>1, after the first step operation has | |
717 | been completed.*/ | |
718 | static void | |
0d06e24b | 719 | step_once (int skip_subroutines, int single_inst, int count) |
c2d11a7d | 720 | { |
0d06e24b JM |
721 | struct continuation_arg *arg1; |
722 | struct continuation_arg *arg2; | |
723 | struct continuation_arg *arg3; | |
724 | struct frame_info *frame; | |
c2d11a7d JM |
725 | |
726 | if (count > 0) | |
c906108c SS |
727 | { |
728 | clear_proceed_status (); | |
729 | ||
730 | frame = get_current_frame (); | |
c5aa993b | 731 | if (!frame) /* Avoid coredump here. Why tho? */ |
c906108c SS |
732 | error ("No current frame"); |
733 | step_frame_address = FRAME_FP (frame); | |
734 | step_sp = read_sp (); | |
735 | ||
c5aa993b | 736 | if (!single_inst) |
c906108c SS |
737 | { |
738 | find_pc_line_pc_range (stop_pc, &step_range_start, &step_range_end); | |
5fbbeb29 CF |
739 | |
740 | /* If we have no line info, switch to stepi mode. */ | |
741 | if (step_range_end == 0 && step_stop_if_no_debug) | |
742 | { | |
743 | step_range_start = step_range_end = 1; | |
744 | } | |
745 | else if (step_range_end == 0) | |
c906108c SS |
746 | { |
747 | char *name; | |
748 | if (find_pc_partial_function (stop_pc, &name, &step_range_start, | |
749 | &step_range_end) == 0) | |
750 | error ("Cannot find bounds of current function"); | |
751 | ||
752 | target_terminal_ours (); | |
753 | printf_filtered ("\ | |
754 | Single stepping until exit from function %s, \n\ | |
755 | which has no line number information.\n", name); | |
756 | } | |
757 | } | |
758 | else | |
759 | { | |
760 | /* Say we are stepping, but stop after one insn whatever it does. */ | |
761 | step_range_start = step_range_end = 1; | |
762 | if (!skip_subroutines) | |
763 | /* It is stepi. | |
764 | Don't step over function calls, not even to functions lacking | |
765 | line numbers. */ | |
5fbbeb29 | 766 | step_over_calls = STEP_OVER_NONE; |
c906108c SS |
767 | } |
768 | ||
769 | if (skip_subroutines) | |
5fbbeb29 | 770 | step_over_calls = STEP_OVER_ALL; |
c906108c SS |
771 | |
772 | step_multi = (count > 1); | |
c2d11a7d JM |
773 | arg1 = |
774 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
775 | arg2 = | |
776 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
777 | arg3 = | |
778 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
779 | arg1->next = arg2; | |
57e687d9 | 780 | arg1->data.integer = skip_subroutines; |
c2d11a7d | 781 | arg2->next = arg3; |
57e687d9 | 782 | arg2->data.integer = single_inst; |
c2d11a7d | 783 | arg3->next = NULL; |
57e687d9 | 784 | arg3->data.integer = count; |
c2d11a7d | 785 | add_intermediate_continuation (step_1_continuation, arg1); |
2acceee2 | 786 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); |
c906108c | 787 | } |
c906108c | 788 | } |
c2d11a7d | 789 | |
c906108c SS |
790 | \f |
791 | /* Continue program at specified address. */ | |
792 | ||
793 | static void | |
fba45db2 | 794 | jump_command (char *arg, int from_tty) |
c906108c SS |
795 | { |
796 | register CORE_ADDR addr; | |
797 | struct symtabs_and_lines sals; | |
798 | struct symtab_and_line sal; | |
799 | struct symbol *fn; | |
800 | struct symbol *sfn; | |
43ff13b4 | 801 | int async_exec = 0; |
c5aa993b | 802 | |
c906108c SS |
803 | ERROR_NO_INFERIOR; |
804 | ||
43ff13b4 JM |
805 | /* Find out whether we must run in the background. */ |
806 | if (arg != NULL) | |
807 | async_exec = strip_bg_char (&arg); | |
808 | ||
809 | /* If we must run in the background, but the target can't do it, | |
810 | error out. */ | |
6426a772 | 811 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
812 | error ("Asynchronous execution not supported on this target."); |
813 | ||
814 | /* If we are not asked to run in the bg, then prepare to run in the | |
815 | foreground, synchronously. */ | |
6426a772 | 816 | if (event_loop_p && !async_exec && target_can_async_p ()) |
c5aa993b | 817 | { |
43ff13b4 | 818 | /* Simulate synchronous execution */ |
6426a772 | 819 | async_disable_stdin (); |
43ff13b4 JM |
820 | } |
821 | ||
c906108c SS |
822 | if (!arg) |
823 | error_no_arg ("starting address"); | |
824 | ||
825 | sals = decode_line_spec_1 (arg, 1); | |
826 | if (sals.nelts != 1) | |
827 | { | |
828 | error ("Unreasonable jump request"); | |
829 | } | |
830 | ||
831 | sal = sals.sals[0]; | |
b8c9b27d | 832 | xfree (sals.sals); |
c906108c SS |
833 | |
834 | if (sal.symtab == 0 && sal.pc == 0) | |
835 | error ("No source file has been specified."); | |
836 | ||
c5aa993b | 837 | resolve_sal_pc (&sal); /* May error out */ |
c906108c SS |
838 | |
839 | /* See if we are trying to jump to another function. */ | |
840 | fn = get_frame_function (get_current_frame ()); | |
841 | sfn = find_pc_function (sal.pc); | |
842 | if (fn != NULL && sfn != fn) | |
843 | { | |
844 | if (!query ("Line %d is not in `%s'. Jump anyway? ", sal.line, | |
845 | SYMBOL_SOURCE_NAME (fn))) | |
846 | { | |
847 | error ("Not confirmed."); | |
848 | /* NOTREACHED */ | |
849 | } | |
850 | } | |
851 | ||
c5aa993b | 852 | if (sfn != NULL) |
c906108c SS |
853 | { |
854 | fixup_symbol_section (sfn, 0); | |
c5aa993b | 855 | if (section_is_overlay (SYMBOL_BFD_SECTION (sfn)) && |
c906108c SS |
856 | !section_is_mapped (SYMBOL_BFD_SECTION (sfn))) |
857 | { | |
858 | if (!query ("WARNING!!! Destination is in unmapped overlay! Jump anyway? ")) | |
859 | { | |
860 | error ("Not confirmed."); | |
861 | /* NOTREACHED */ | |
862 | } | |
863 | } | |
864 | } | |
865 | ||
c906108c SS |
866 | addr = sal.pc; |
867 | ||
868 | if (from_tty) | |
869 | { | |
870 | printf_filtered ("Continuing at "); | |
871 | print_address_numeric (addr, 1, gdb_stdout); | |
872 | printf_filtered (".\n"); | |
873 | } | |
874 | ||
875 | clear_proceed_status (); | |
876 | proceed (addr, TARGET_SIGNAL_0, 0); | |
877 | } | |
c906108c | 878 | \f |
c5aa993b | 879 | |
c906108c SS |
880 | /* Go to line or address in current procedure */ |
881 | static void | |
fba45db2 | 882 | go_command (char *line_no, int from_tty) |
c906108c | 883 | { |
c5aa993b | 884 | if (line_no == (char *) NULL || !*line_no) |
b83266a0 | 885 | printf_filtered (GO_USAGE); |
c906108c SS |
886 | else |
887 | { | |
b83266a0 SS |
888 | tbreak_command (line_no, from_tty); |
889 | jump_command (line_no, from_tty); | |
c906108c SS |
890 | } |
891 | } | |
c906108c | 892 | \f |
c5aa993b | 893 | |
c906108c SS |
894 | /* Continue program giving it specified signal. */ |
895 | ||
896 | static void | |
fba45db2 | 897 | signal_command (char *signum_exp, int from_tty) |
c906108c SS |
898 | { |
899 | enum target_signal oursig; | |
900 | ||
901 | dont_repeat (); /* Too dangerous. */ | |
902 | ERROR_NO_INFERIOR; | |
903 | ||
904 | if (!signum_exp) | |
905 | error_no_arg ("signal number"); | |
906 | ||
907 | /* It would be even slicker to make signal names be valid expressions, | |
908 | (the type could be "enum $signal" or some such), then the user could | |
909 | assign them to convenience variables. */ | |
910 | oursig = target_signal_from_name (signum_exp); | |
911 | ||
912 | if (oursig == TARGET_SIGNAL_UNKNOWN) | |
913 | { | |
914 | /* No, try numeric. */ | |
bb518678 | 915 | int num = parse_and_eval_long (signum_exp); |
c906108c SS |
916 | |
917 | if (num == 0) | |
918 | oursig = TARGET_SIGNAL_0; | |
919 | else | |
920 | oursig = target_signal_from_command (num); | |
921 | } | |
922 | ||
923 | if (from_tty) | |
924 | { | |
925 | if (oursig == TARGET_SIGNAL_0) | |
926 | printf_filtered ("Continuing with no signal.\n"); | |
927 | else | |
928 | printf_filtered ("Continuing with signal %s.\n", | |
929 | target_signal_to_name (oursig)); | |
930 | } | |
931 | ||
932 | clear_proceed_status (); | |
933 | /* "signal 0" should not get stuck if we are stopped at a breakpoint. | |
934 | FIXME: Neither should "signal foo" but when I tried passing | |
935 | (CORE_ADDR)-1 unconditionally I got a testsuite failure which I haven't | |
936 | tried to track down yet. */ | |
2acceee2 | 937 | proceed (oursig == TARGET_SIGNAL_0 ? (CORE_ADDR) -1 : stop_pc, oursig, 0); |
c906108c SS |
938 | } |
939 | ||
940 | /* Call breakpoint_auto_delete on the current contents of the bpstat | |
941 | pointed to by arg (which is really a bpstat *). */ | |
942 | ||
c906108c | 943 | static void |
fba45db2 | 944 | breakpoint_auto_delete_contents (PTR arg) |
c906108c | 945 | { |
c5aa993b | 946 | breakpoint_auto_delete (*(bpstat *) arg); |
c906108c SS |
947 | } |
948 | ||
c906108c SS |
949 | |
950 | /* Execute a "stack dummy", a piece of code stored in the stack | |
951 | by the debugger to be executed in the inferior. | |
952 | ||
953 | To call: first, do PUSH_DUMMY_FRAME. | |
954 | Then push the contents of the dummy. It should end with a breakpoint insn. | |
955 | Then call here, passing address at which to start the dummy. | |
956 | ||
957 | The contents of all registers are saved before the dummy frame is popped | |
958 | and copied into the buffer BUFFER. | |
959 | ||
960 | The dummy's frame is automatically popped whenever that break is hit. | |
961 | If that is the first time the program stops, run_stack_dummy | |
962 | returns to its caller with that frame already gone and returns 0. | |
da59e081 JM |
963 | |
964 | Otherwise, run_stack-dummy returns a non-zero value. | |
965 | If the called function receives a random signal, we do not allow the user | |
966 | to continue executing it as this may not work. The dummy frame is poped | |
967 | and we return 1. | |
968 | If we hit a breakpoint, we leave the frame in place and return 2 (the frame | |
969 | will eventually be popped when we do hit the dummy end breakpoint). */ | |
c906108c | 970 | |
c906108c | 971 | int |
fba45db2 | 972 | run_stack_dummy (CORE_ADDR addr, char *buffer) |
c906108c SS |
973 | { |
974 | struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); | |
ed9a39eb | 975 | int saved_async = 0; |
c906108c SS |
976 | |
977 | /* Now proceed, having reached the desired place. */ | |
978 | clear_proceed_status (); | |
96baa820 | 979 | |
7a292a7a SS |
980 | if (CALL_DUMMY_BREAKPOINT_OFFSET_P) |
981 | { | |
982 | struct breakpoint *bpt; | |
983 | struct symtab_and_line sal; | |
c5aa993b JM |
984 | |
985 | INIT_SAL (&sal); /* initialize to zeroes */ | |
7a292a7a SS |
986 | if (CALL_DUMMY_LOCATION == AT_ENTRY_POINT) |
987 | { | |
988 | sal.pc = CALL_DUMMY_ADDRESS (); | |
989 | } | |
990 | else | |
991 | { | |
992 | sal.pc = addr - CALL_DUMMY_START_OFFSET + CALL_DUMMY_BREAKPOINT_OFFSET; | |
993 | } | |
994 | sal.section = find_pc_overlay (sal.pc); | |
c5aa993b | 995 | |
7a292a7a | 996 | /* Set up a FRAME for the dummy frame so we can pass it to |
c5aa993b JM |
997 | set_momentary_breakpoint. We need to give the breakpoint a |
998 | frame in case there is only one copy of the dummy (e.g. | |
999 | CALL_DUMMY_LOCATION == AFTER_TEXT_END). */ | |
7a292a7a SS |
1000 | flush_cached_frames (); |
1001 | set_current_frame (create_new_frame (read_fp (), sal.pc)); | |
c5aa993b | 1002 | |
7a292a7a | 1003 | /* If defined, CALL_DUMMY_BREAKPOINT_OFFSET is where we need to put |
c5aa993b JM |
1004 | a breakpoint instruction. If not, the call dummy already has the |
1005 | breakpoint instruction in it. | |
1006 | ||
1007 | addr is the address of the call dummy plus the CALL_DUMMY_START_OFFSET, | |
1008 | so we need to subtract the CALL_DUMMY_START_OFFSET. */ | |
7a292a7a SS |
1009 | bpt = set_momentary_breakpoint (sal, |
1010 | get_current_frame (), | |
1011 | bp_call_dummy); | |
b5de0fa7 | 1012 | bpt->disposition = disp_del; |
c5aa993b | 1013 | |
7a292a7a | 1014 | /* If all error()s out of proceed ended up calling normal_stop (and |
c5aa993b JM |
1015 | perhaps they should; it already does in the special case of error |
1016 | out of resume()), then we wouldn't need this. */ | |
7a292a7a SS |
1017 | make_cleanup (breakpoint_auto_delete_contents, &stop_bpstat); |
1018 | } | |
c906108c SS |
1019 | |
1020 | disable_watchpoints_before_interactive_call_start (); | |
1021 | proceed_to_finish = 1; /* We want stop_registers, please... */ | |
ed9a39eb JM |
1022 | |
1023 | if (target_can_async_p ()) | |
1024 | saved_async = target_async_mask (0); | |
1025 | ||
c906108c | 1026 | proceed (addr, TARGET_SIGNAL_0, 0); |
ed9a39eb JM |
1027 | |
1028 | if (saved_async) | |
1029 | target_async_mask (saved_async); | |
1030 | ||
c906108c SS |
1031 | enable_watchpoints_after_interactive_call_stop (); |
1032 | ||
1033 | discard_cleanups (old_cleanups); | |
1034 | ||
242bfc55 | 1035 | /* We can stop during an inferior call because a signal is received. */ |
da59e081 | 1036 | if (stopped_by_random_signal) |
242bfc55 | 1037 | return 1; |
da59e081 JM |
1038 | |
1039 | /* We may also stop prematurely because we hit a breakpoint in the | |
242bfc55 | 1040 | called routine. */ |
c906108c | 1041 | if (!stop_stack_dummy) |
da59e081 | 1042 | return 2; |
c906108c | 1043 | |
da59e081 | 1044 | /* On normal return, the stack dummy has been popped already. */ |
c906108c | 1045 | |
7a292a7a | 1046 | memcpy (buffer, stop_registers, REGISTER_BYTES); |
c906108c SS |
1047 | return 0; |
1048 | } | |
1049 | \f | |
1050 | /* Proceed until we reach a different source line with pc greater than | |
1051 | our current one or exit the function. We skip calls in both cases. | |
1052 | ||
1053 | Note that eventually this command should probably be changed so | |
1054 | that only source lines are printed out when we hit the breakpoint | |
1055 | we set. This may involve changes to wait_for_inferior and the | |
1056 | proceed status code. */ | |
1057 | ||
1058 | /* ARGSUSED */ | |
1059 | static void | |
fba45db2 | 1060 | until_next_command (int from_tty) |
c906108c SS |
1061 | { |
1062 | struct frame_info *frame; | |
1063 | CORE_ADDR pc; | |
1064 | struct symbol *func; | |
1065 | struct symtab_and_line sal; | |
c5aa993b | 1066 | |
c906108c SS |
1067 | clear_proceed_status (); |
1068 | ||
1069 | frame = get_current_frame (); | |
1070 | ||
1071 | /* Step until either exited from this function or greater | |
1072 | than the current line (if in symbolic section) or pc (if | |
1073 | not). */ | |
1074 | ||
1075 | pc = read_pc (); | |
1076 | func = find_pc_function (pc); | |
c5aa993b | 1077 | |
c906108c SS |
1078 | if (!func) |
1079 | { | |
1080 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (pc); | |
c5aa993b | 1081 | |
c906108c SS |
1082 | if (msymbol == NULL) |
1083 | error ("Execution is not within a known function."); | |
c5aa993b | 1084 | |
c906108c SS |
1085 | step_range_start = SYMBOL_VALUE_ADDRESS (msymbol); |
1086 | step_range_end = pc; | |
1087 | } | |
1088 | else | |
1089 | { | |
1090 | sal = find_pc_line (pc, 0); | |
c5aa993b | 1091 | |
c906108c SS |
1092 | step_range_start = BLOCK_START (SYMBOL_BLOCK_VALUE (func)); |
1093 | step_range_end = sal.end; | |
1094 | } | |
c5aa993b | 1095 | |
5fbbeb29 | 1096 | step_over_calls = STEP_OVER_ALL; |
c906108c SS |
1097 | step_frame_address = FRAME_FP (frame); |
1098 | step_sp = read_sp (); | |
1099 | ||
1100 | step_multi = 0; /* Only one call to proceed */ | |
c5aa993b | 1101 | |
2acceee2 | 1102 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); |
c906108c SS |
1103 | } |
1104 | ||
c5aa993b | 1105 | static void |
fba45db2 | 1106 | until_command (char *arg, int from_tty) |
c906108c | 1107 | { |
43ff13b4 JM |
1108 | int async_exec = 0; |
1109 | ||
c906108c SS |
1110 | if (!target_has_execution) |
1111 | error ("The program is not running."); | |
43ff13b4 JM |
1112 | |
1113 | /* Find out whether we must run in the background. */ | |
1114 | if (arg != NULL) | |
1115 | async_exec = strip_bg_char (&arg); | |
1116 | ||
1117 | /* If we must run in the background, but the target can't do it, | |
1118 | error out. */ | |
6426a772 | 1119 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
1120 | error ("Asynchronous execution not supported on this target."); |
1121 | ||
1122 | /* If we are not asked to run in the bg, then prepare to run in the | |
1123 | foreground, synchronously. */ | |
6426a772 | 1124 | if (event_loop_p && !async_exec && target_can_async_p ()) |
c5aa993b | 1125 | { |
43ff13b4 | 1126 | /* Simulate synchronous execution */ |
6426a772 | 1127 | async_disable_stdin (); |
43ff13b4 JM |
1128 | } |
1129 | ||
c906108c SS |
1130 | if (arg) |
1131 | until_break_command (arg, from_tty); | |
1132 | else | |
1133 | until_next_command (from_tty); | |
1134 | } | |
1135 | \f | |
43ff13b4 | 1136 | |
11cf8741 JM |
1137 | /* Print the result of a function at the end of a 'finish' command. */ |
1138 | static void | |
1139 | print_return_value (int structure_return, struct type *value_type) | |
1140 | { | |
3d6d86c6 | 1141 | struct value *value; |
8b93c638 | 1142 | static struct ui_stream *stb = NULL; |
11cf8741 JM |
1143 | |
1144 | if (!structure_return) | |
1145 | { | |
1146 | value = value_being_returned (value_type, stop_registers, structure_return); | |
8b93c638 JM |
1147 | stb = ui_out_stream_new (uiout); |
1148 | ui_out_text (uiout, "Value returned is "); | |
1149 | ui_out_field_fmt (uiout, "gdb-result-var", "$%d", record_latest_value (value)); | |
9549d9c1 | 1150 | ui_out_text (uiout, " = "); |
8b93c638 JM |
1151 | value_print (value, stb->stream, 0, Val_no_prettyprint); |
1152 | ui_out_field_stream (uiout, "return-value", stb); | |
1153 | ui_out_text (uiout, "\n"); | |
11cf8741 JM |
1154 | } |
1155 | else | |
1156 | { | |
1157 | /* We cannot determine the contents of the structure because | |
1158 | it is on the stack, and we don't know where, since we did not | |
1159 | initiate the call, as opposed to the call_function_by_hand case */ | |
1160 | #ifdef VALUE_RETURNED_FROM_STACK | |
1161 | value = 0; | |
8b93c638 JM |
1162 | ui_out_text (uiout, "Value returned has type: "); |
1163 | ui_out_field_string (uiout, "return-type", TYPE_NAME (value_type)); | |
1164 | ui_out_text (uiout, "."); | |
1165 | ui_out_text (uiout, " Cannot determine contents\n"); | |
11cf8741 JM |
1166 | #else |
1167 | value = value_being_returned (value_type, stop_registers, structure_return); | |
8b93c638 JM |
1168 | stb = ui_out_stream_new (uiout); |
1169 | ui_out_text (uiout, "Value returned is "); | |
1170 | ui_out_field_fmt (uiout, "gdb-result-var", "$%d", record_latest_value (value)); | |
28ae27b1 | 1171 | ui_out_text (uiout, " = "); |
8b93c638 JM |
1172 | value_print (value, stb->stream, 0, Val_no_prettyprint); |
1173 | ui_out_field_stream (uiout, "return-value", stb); | |
1174 | ui_out_text (uiout, "\n"); | |
11cf8741 JM |
1175 | #endif |
1176 | } | |
1177 | } | |
1178 | ||
43ff13b4 JM |
1179 | /* Stuff that needs to be done by the finish command after the target |
1180 | has stopped. In asynchronous mode, we wait for the target to stop in | |
1181 | the call to poll or select in the event loop, so it is impossible to | |
1182 | do all the stuff as part of the finish_command function itself. The | |
1183 | only chance we have to complete this command is in | |
1184 | fetch_inferior_event, which is called by the event loop as soon as it | |
1185 | detects that the target has stopped. This function is called via the | |
6953f3ba | 1186 | cmd_continuation pointer. */ |
43ff13b4 | 1187 | void |
fba45db2 | 1188 | finish_command_continuation (struct continuation_arg *arg) |
43ff13b4 JM |
1189 | { |
1190 | register struct symbol *function; | |
1191 | struct breakpoint *breakpoint; | |
0d06e24b | 1192 | struct cleanup *cleanups; |
c5aa993b | 1193 | |
57e687d9 MS |
1194 | breakpoint = (struct breakpoint *) arg->data.pointer; |
1195 | function = (struct symbol *) arg->next->data.pointer; | |
1196 | cleanups = (struct cleanup *) arg->next->next->data.pointer; | |
43ff13b4 | 1197 | |
c5aa993b | 1198 | if (bpstat_find_breakpoint (stop_bpstat, breakpoint) != NULL |
43ff13b4 JM |
1199 | && function != 0) |
1200 | { | |
1201 | struct type *value_type; | |
43ff13b4 JM |
1202 | CORE_ADDR funcaddr; |
1203 | int struct_return; | |
1204 | ||
1205 | value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (function)); | |
1206 | if (!value_type) | |
8e65ff28 AC |
1207 | internal_error (__FILE__, __LINE__, |
1208 | "finish_command: function has no target type"); | |
c5aa993b | 1209 | |
43ff13b4 JM |
1210 | if (TYPE_CODE (value_type) == TYPE_CODE_VOID) |
1211 | { | |
0d06e24b | 1212 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
1213 | return; |
1214 | } | |
1215 | ||
1216 | funcaddr = BLOCK_START (SYMBOL_BLOCK_VALUE (function)); | |
1217 | ||
1218 | struct_return = using_struct_return (value_of_variable (function, NULL), | |
c5aa993b JM |
1219 | funcaddr, |
1220 | check_typedef (value_type), | |
11cf8741 | 1221 | BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function))); |
43ff13b4 | 1222 | |
11cf8741 | 1223 | print_return_value (struct_return, value_type); |
43ff13b4 | 1224 | } |
0d06e24b | 1225 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
1226 | } |
1227 | ||
c906108c SS |
1228 | /* "finish": Set a temporary breakpoint at the place |
1229 | the selected frame will return to, then continue. */ | |
1230 | ||
1231 | static void | |
fba45db2 | 1232 | finish_command (char *arg, int from_tty) |
c906108c SS |
1233 | { |
1234 | struct symtab_and_line sal; | |
1235 | register struct frame_info *frame; | |
1236 | register struct symbol *function; | |
1237 | struct breakpoint *breakpoint; | |
1238 | struct cleanup *old_chain; | |
0d06e24b | 1239 | struct continuation_arg *arg1, *arg2, *arg3; |
43ff13b4 JM |
1240 | |
1241 | int async_exec = 0; | |
1242 | ||
1243 | /* Find out whether we must run in the background. */ | |
1244 | if (arg != NULL) | |
1245 | async_exec = strip_bg_char (&arg); | |
1246 | ||
1247 | /* If we must run in the background, but the target can't do it, | |
1248 | error out. */ | |
6426a772 | 1249 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
1250 | error ("Asynchronous execution not supported on this target."); |
1251 | ||
1252 | /* If we are not asked to run in the bg, then prepare to run in the | |
1253 | foreground, synchronously. */ | |
6426a772 | 1254 | if (event_loop_p && !async_exec && target_can_async_p ()) |
c5aa993b | 1255 | { |
43ff13b4 | 1256 | /* Simulate synchronous execution */ |
6426a772 | 1257 | async_disable_stdin (); |
43ff13b4 | 1258 | } |
c906108c SS |
1259 | |
1260 | if (arg) | |
1261 | error ("The \"finish\" command does not take any arguments."); | |
1262 | if (!target_has_execution) | |
1263 | error ("The program is not running."); | |
1264 | if (selected_frame == NULL) | |
1265 | error ("No selected frame."); | |
1266 | ||
1267 | frame = get_prev_frame (selected_frame); | |
1268 | if (frame == 0) | |
1269 | error ("\"finish\" not meaningful in the outermost frame."); | |
1270 | ||
1271 | clear_proceed_status (); | |
1272 | ||
1273 | sal = find_pc_line (frame->pc, 0); | |
1274 | sal.pc = frame->pc; | |
1275 | ||
1276 | breakpoint = set_momentary_breakpoint (sal, frame, bp_finish); | |
1277 | ||
6426a772 | 1278 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 1279 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 1280 | else |
4d6140d9 | 1281 | old_chain = make_exec_cleanup_delete_breakpoint (breakpoint); |
c906108c SS |
1282 | |
1283 | /* Find the function we will return from. */ | |
1284 | ||
1285 | function = find_pc_function (selected_frame->pc); | |
1286 | ||
1287 | /* Print info on the selected frame, including level number | |
1288 | but not source. */ | |
1289 | if (from_tty) | |
1290 | { | |
1291 | printf_filtered ("Run till exit from "); | |
1292 | print_stack_frame (selected_frame, selected_frame_level, 0); | |
1293 | } | |
1294 | ||
43ff13b4 JM |
1295 | /* If running asynchronously and the target support asynchronous |
1296 | execution, set things up for the rest of the finish command to be | |
1297 | completed later on, when gdb has detected that the target has | |
1298 | stopped, in fetch_inferior_event. */ | |
6426a772 | 1299 | if (event_loop_p && target_can_async_p ()) |
43ff13b4 | 1300 | { |
c5aa993b | 1301 | arg1 = |
43ff13b4 | 1302 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); |
c5aa993b | 1303 | arg2 = |
43ff13b4 | 1304 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); |
0d06e24b JM |
1305 | arg3 = |
1306 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
43ff13b4 | 1307 | arg1->next = arg2; |
0d06e24b JM |
1308 | arg2->next = arg3; |
1309 | arg3->next = NULL; | |
57e687d9 MS |
1310 | arg1->data.pointer = breakpoint; |
1311 | arg2->data.pointer = function; | |
1312 | arg3->data.pointer = old_chain; | |
43ff13b4 JM |
1313 | add_continuation (finish_command_continuation, arg1); |
1314 | } | |
1315 | ||
c5aa993b | 1316 | proceed_to_finish = 1; /* We want stop_registers, please... */ |
2acceee2 | 1317 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); |
c906108c | 1318 | |
43ff13b4 JM |
1319 | /* Do this only if not running asynchronously or if the target |
1320 | cannot do async execution. Otherwise, complete this command when | |
c5aa993b | 1321 | the target actually stops, in fetch_inferior_event. */ |
6426a772 | 1322 | if (!event_loop_p || !target_can_async_p ()) |
c5aa993b JM |
1323 | { |
1324 | ||
1325 | /* Did we stop at our breakpoint? */ | |
1326 | if (bpstat_find_breakpoint (stop_bpstat, breakpoint) != NULL | |
1327 | && function != 0) | |
1328 | { | |
1329 | struct type *value_type; | |
c5aa993b JM |
1330 | CORE_ADDR funcaddr; |
1331 | int struct_return; | |
1332 | ||
1333 | value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (function)); | |
1334 | if (!value_type) | |
8e65ff28 AC |
1335 | internal_error (__FILE__, __LINE__, |
1336 | "finish_command: function has no target type"); | |
c5aa993b JM |
1337 | |
1338 | /* FIXME: Shouldn't we do the cleanups before returning? */ | |
1339 | if (TYPE_CODE (value_type) == TYPE_CODE_VOID) | |
1340 | return; | |
1341 | ||
1342 | funcaddr = BLOCK_START (SYMBOL_BLOCK_VALUE (function)); | |
1343 | ||
1344 | struct_return = | |
1345 | using_struct_return (value_of_variable (function, NULL), | |
1346 | funcaddr, | |
1347 | check_typedef (value_type), | |
1348 | BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function))); | |
1349 | ||
11cf8741 | 1350 | print_return_value (struct_return, value_type); |
c5aa993b JM |
1351 | } |
1352 | do_cleanups (old_chain); | |
1353 | } | |
c906108c SS |
1354 | } |
1355 | \f | |
1356 | /* ARGSUSED */ | |
1357 | static void | |
fba45db2 | 1358 | program_info (char *args, int from_tty) |
c906108c SS |
1359 | { |
1360 | bpstat bs = stop_bpstat; | |
1361 | int num = bpstat_num (&bs); | |
c5aa993b | 1362 | |
c906108c SS |
1363 | if (!target_has_execution) |
1364 | { | |
1365 | printf_filtered ("The program being debugged is not being run.\n"); | |
1366 | return; | |
1367 | } | |
1368 | ||
1369 | target_files_info (); | |
1370 | printf_filtered ("Program stopped at %s.\n", | |
c5aa993b | 1371 | local_hex_string ((unsigned long) stop_pc)); |
c906108c SS |
1372 | if (stop_step) |
1373 | printf_filtered ("It stopped after being stepped.\n"); | |
1374 | else if (num != 0) | |
1375 | { | |
1376 | /* There may be several breakpoints in the same place, so this | |
c5aa993b | 1377 | isn't as strange as it seems. */ |
c906108c SS |
1378 | while (num != 0) |
1379 | { | |
1380 | if (num < 0) | |
1381 | { | |
1382 | printf_filtered ("It stopped at a breakpoint that has "); | |
1383 | printf_filtered ("since been deleted.\n"); | |
1384 | } | |
1385 | else | |
1386 | printf_filtered ("It stopped at breakpoint %d.\n", num); | |
1387 | num = bpstat_num (&bs); | |
1388 | } | |
1389 | } | |
1390 | else if (stop_signal != TARGET_SIGNAL_0) | |
1391 | { | |
1392 | printf_filtered ("It stopped with signal %s, %s.\n", | |
1393 | target_signal_to_name (stop_signal), | |
1394 | target_signal_to_string (stop_signal)); | |
1395 | } | |
1396 | ||
1397 | if (!from_tty) | |
1398 | { | |
1399 | printf_filtered ("Type \"info stack\" or \"info registers\" "); | |
1400 | printf_filtered ("for more information.\n"); | |
1401 | } | |
1402 | } | |
1403 | \f | |
1404 | static void | |
fba45db2 | 1405 | environment_info (char *var, int from_tty) |
c906108c SS |
1406 | { |
1407 | if (var) | |
1408 | { | |
1409 | register char *val = get_in_environ (inferior_environ, var); | |
1410 | if (val) | |
1411 | { | |
1412 | puts_filtered (var); | |
1413 | puts_filtered (" = "); | |
1414 | puts_filtered (val); | |
1415 | puts_filtered ("\n"); | |
1416 | } | |
1417 | else | |
1418 | { | |
1419 | puts_filtered ("Environment variable \""); | |
1420 | puts_filtered (var); | |
1421 | puts_filtered ("\" not defined.\n"); | |
1422 | } | |
1423 | } | |
1424 | else | |
1425 | { | |
1426 | register char **vector = environ_vector (inferior_environ); | |
1427 | while (*vector) | |
1428 | { | |
1429 | puts_filtered (*vector++); | |
1430 | puts_filtered ("\n"); | |
1431 | } | |
1432 | } | |
1433 | } | |
1434 | ||
1435 | static void | |
fba45db2 | 1436 | set_environment_command (char *arg, int from_tty) |
c906108c SS |
1437 | { |
1438 | register char *p, *val, *var; | |
1439 | int nullset = 0; | |
1440 | ||
1441 | if (arg == 0) | |
1442 | error_no_arg ("environment variable and value"); | |
1443 | ||
1444 | /* Find seperation between variable name and value */ | |
1445 | p = (char *) strchr (arg, '='); | |
1446 | val = (char *) strchr (arg, ' '); | |
1447 | ||
1448 | if (p != 0 && val != 0) | |
1449 | { | |
1450 | /* We have both a space and an equals. If the space is before the | |
c5aa993b JM |
1451 | equals, walk forward over the spaces til we see a nonspace |
1452 | (possibly the equals). */ | |
c906108c SS |
1453 | if (p > val) |
1454 | while (*val == ' ') | |
1455 | val++; | |
1456 | ||
1457 | /* Now if the = is after the char following the spaces, | |
c5aa993b | 1458 | take the char following the spaces. */ |
c906108c SS |
1459 | if (p > val) |
1460 | p = val - 1; | |
1461 | } | |
1462 | else if (val != 0 && p == 0) | |
1463 | p = val; | |
1464 | ||
1465 | if (p == arg) | |
1466 | error_no_arg ("environment variable to set"); | |
1467 | ||
1468 | if (p == 0 || p[1] == 0) | |
1469 | { | |
1470 | nullset = 1; | |
1471 | if (p == 0) | |
1472 | p = arg + strlen (arg); /* So that savestring below will work */ | |
1473 | } | |
1474 | else | |
1475 | { | |
1476 | /* Not setting variable value to null */ | |
1477 | val = p + 1; | |
1478 | while (*val == ' ' || *val == '\t') | |
1479 | val++; | |
1480 | } | |
1481 | ||
c5aa993b JM |
1482 | while (p != arg && (p[-1] == ' ' || p[-1] == '\t')) |
1483 | p--; | |
c906108c SS |
1484 | |
1485 | var = savestring (arg, p - arg); | |
1486 | if (nullset) | |
1487 | { | |
1488 | printf_filtered ("Setting environment variable "); | |
1489 | printf_filtered ("\"%s\" to null value.\n", var); | |
1490 | set_in_environ (inferior_environ, var, ""); | |
1491 | } | |
1492 | else | |
1493 | set_in_environ (inferior_environ, var, val); | |
b8c9b27d | 1494 | xfree (var); |
c906108c SS |
1495 | } |
1496 | ||
1497 | static void | |
fba45db2 | 1498 | unset_environment_command (char *var, int from_tty) |
c906108c SS |
1499 | { |
1500 | if (var == 0) | |
1501 | { | |
1502 | /* If there is no argument, delete all environment variables. | |
c5aa993b | 1503 | Ask for confirmation if reading from the terminal. */ |
c906108c SS |
1504 | if (!from_tty || query ("Delete all environment variables? ")) |
1505 | { | |
1506 | free_environ (inferior_environ); | |
1507 | inferior_environ = make_environ (); | |
1508 | } | |
1509 | } | |
1510 | else | |
1511 | unset_in_environ (inferior_environ, var); | |
1512 | } | |
1513 | ||
1514 | /* Handle the execution path (PATH variable) */ | |
1515 | ||
1516 | static const char path_var_name[] = "PATH"; | |
1517 | ||
1518 | /* ARGSUSED */ | |
1519 | static void | |
fba45db2 | 1520 | path_info (char *args, int from_tty) |
c906108c SS |
1521 | { |
1522 | puts_filtered ("Executable and object file path: "); | |
1523 | puts_filtered (get_in_environ (inferior_environ, path_var_name)); | |
1524 | puts_filtered ("\n"); | |
1525 | } | |
1526 | ||
1527 | /* Add zero or more directories to the front of the execution path. */ | |
1528 | ||
1529 | static void | |
fba45db2 | 1530 | path_command (char *dirname, int from_tty) |
c906108c SS |
1531 | { |
1532 | char *exec_path; | |
1533 | char *env; | |
1534 | dont_repeat (); | |
1535 | env = get_in_environ (inferior_environ, path_var_name); | |
1536 | /* Can be null if path is not set */ | |
1537 | if (!env) | |
1538 | env = ""; | |
4fcf66da | 1539 | exec_path = xstrdup (env); |
c906108c SS |
1540 | mod_path (dirname, &exec_path); |
1541 | set_in_environ (inferior_environ, path_var_name, exec_path); | |
b8c9b27d | 1542 | xfree (exec_path); |
c906108c | 1543 | if (from_tty) |
c5aa993b | 1544 | path_info ((char *) NULL, from_tty); |
c906108c | 1545 | } |
c906108c | 1546 | \f |
c5aa993b | 1547 | |
c906108c SS |
1548 | #ifdef REGISTER_NAMES |
1549 | char *gdb_register_names[] = REGISTER_NAMES; | |
1550 | #endif | |
1551 | /* Print out the machine register regnum. If regnum is -1, | |
1552 | print all registers (fpregs == 1) or all non-float registers | |
1553 | (fpregs == 0). | |
1554 | ||
1555 | For most machines, having all_registers_info() print the | |
1556 | register(s) one per line is good enough. If a different format | |
1557 | is required, (eg, for MIPS or Pyramid 90x, which both have | |
1558 | lots of regs), or there is an existing convention for showing | |
1559 | all the registers, define the macro DO_REGISTERS_INFO(regnum, fp) | |
c5aa993b | 1560 | to provide that format. */ |
c906108c | 1561 | |
666e11c5 | 1562 | void |
fba45db2 | 1563 | do_registers_info (int regnum, int fpregs) |
c906108c SS |
1564 | { |
1565 | register int i; | |
64485362 | 1566 | int numregs = NUM_REGS + NUM_PSEUDO_REGS; |
b8adfa9f MS |
1567 | char *raw_buffer = (char*) alloca (MAX_REGISTER_RAW_SIZE); |
1568 | char *virtual_buffer = (char*) alloca (MAX_REGISTER_VIRTUAL_SIZE); | |
c906108c SS |
1569 | |
1570 | for (i = 0; i < numregs; i++) | |
1571 | { | |
c906108c | 1572 | /* Decide between printing all regs, nonfloat regs, or specific reg. */ |
c5aa993b JM |
1573 | if (regnum == -1) |
1574 | { | |
1575 | if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT && !fpregs) | |
1576 | continue; | |
1577 | } | |
1578 | else | |
1579 | { | |
1580 | if (i != regnum) | |
1581 | continue; | |
1582 | } | |
c906108c SS |
1583 | |
1584 | /* If the register name is empty, it is undefined for this | |
c5aa993b | 1585 | processor, so don't display anything. */ |
c906108c SS |
1586 | if (REGISTER_NAME (i) == NULL || *(REGISTER_NAME (i)) == '\0') |
1587 | continue; | |
1588 | ||
1589 | fputs_filtered (REGISTER_NAME (i), gdb_stdout); | |
1590 | print_spaces_filtered (15 - strlen (REGISTER_NAME (i)), gdb_stdout); | |
1591 | ||
1592 | /* Get the data in raw format. */ | |
1593 | if (read_relative_register_raw_bytes (i, raw_buffer)) | |
1594 | { | |
1595 | printf_filtered ("*value not available*\n"); | |
1596 | continue; | |
1597 | } | |
1598 | ||
1599 | /* Convert raw data to virtual format if necessary. */ | |
c906108c SS |
1600 | if (REGISTER_CONVERTIBLE (i)) |
1601 | { | |
1602 | REGISTER_CONVERT_TO_VIRTUAL (i, REGISTER_VIRTUAL_TYPE (i), | |
1603 | raw_buffer, virtual_buffer); | |
1604 | } | |
1605 | else | |
392a587b JM |
1606 | { |
1607 | memcpy (virtual_buffer, raw_buffer, | |
1608 | REGISTER_VIRTUAL_SIZE (i)); | |
1609 | } | |
c906108c SS |
1610 | |
1611 | /* If virtual format is floating, print it that way, and in raw hex. */ | |
1612 | if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT) | |
1613 | { | |
1614 | register int j; | |
1615 | ||
75bc7ddf AC |
1616 | val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0, |
1617 | gdb_stdout, 0, 1, 0, Val_pretty_default); | |
c906108c SS |
1618 | |
1619 | printf_filtered ("\t(raw 0x"); | |
1620 | for (j = 0; j < REGISTER_RAW_SIZE (i); j++) | |
1621 | { | |
d7449b42 | 1622 | register int idx = TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? j |
c5aa993b JM |
1623 | : REGISTER_RAW_SIZE (i) - 1 - j; |
1624 | printf_filtered ("%02x", (unsigned char) raw_buffer[idx]); | |
c906108c SS |
1625 | } |
1626 | printf_filtered (")"); | |
1627 | } | |
c906108c SS |
1628 | /* Else print as integer in hex and in decimal. */ |
1629 | else | |
1630 | { | |
1631 | val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0, | |
1632 | gdb_stdout, 'x', 1, 0, Val_pretty_default); | |
1633 | printf_filtered ("\t"); | |
1634 | val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0, | |
c5aa993b | 1635 | gdb_stdout, 0, 1, 0, Val_pretty_default); |
c906108c SS |
1636 | } |
1637 | ||
1638 | /* The SPARC wants to print even-numbered float regs as doubles | |
c5aa993b | 1639 | in addition to printing them as floats. */ |
c906108c SS |
1640 | #ifdef PRINT_REGISTER_HOOK |
1641 | PRINT_REGISTER_HOOK (i); | |
1642 | #endif | |
1643 | ||
1644 | printf_filtered ("\n"); | |
1645 | } | |
1646 | } | |
c906108c | 1647 | |
c906108c | 1648 | void |
fba45db2 | 1649 | registers_info (char *addr_exp, int fpregs) |
c906108c SS |
1650 | { |
1651 | int regnum, numregs; | |
1652 | register char *end; | |
1653 | ||
1654 | if (!target_has_registers) | |
1655 | error ("The program has no registers now."); | |
1656 | if (selected_frame == NULL) | |
1657 | error ("No selected frame."); | |
1658 | ||
1659 | if (!addr_exp) | |
1660 | { | |
c5aa993b | 1661 | DO_REGISTERS_INFO (-1, fpregs); |
c906108c SS |
1662 | return; |
1663 | } | |
1664 | ||
1665 | do | |
c5aa993b | 1666 | { |
c906108c SS |
1667 | if (addr_exp[0] == '$') |
1668 | addr_exp++; | |
1669 | end = addr_exp; | |
1670 | while (*end != '\0' && *end != ' ' && *end != '\t') | |
1671 | ++end; | |
64485362 | 1672 | numregs = NUM_REGS + NUM_PSEUDO_REGS; |
c906108c SS |
1673 | |
1674 | regnum = target_map_name_to_register (addr_exp, end - addr_exp); | |
c5aa993b | 1675 | if (regnum >= 0) |
c906108c SS |
1676 | goto found; |
1677 | ||
1678 | regnum = numregs; | |
1679 | ||
1680 | if (*addr_exp >= '0' && *addr_exp <= '9') | |
c5aa993b JM |
1681 | regnum = atoi (addr_exp); /* Take a number */ |
1682 | if (regnum >= numregs) /* Bad name, or bad number */ | |
c906108c SS |
1683 | error ("%.*s: invalid register", end - addr_exp, addr_exp); |
1684 | ||
c5aa993b JM |
1685 | found: |
1686 | DO_REGISTERS_INFO (regnum, fpregs); | |
c906108c SS |
1687 | |
1688 | addr_exp = end; | |
1689 | while (*addr_exp == ' ' || *addr_exp == '\t') | |
1690 | ++addr_exp; | |
c5aa993b JM |
1691 | } |
1692 | while (*addr_exp != '\0'); | |
c906108c SS |
1693 | } |
1694 | ||
1695 | void | |
fba45db2 | 1696 | all_registers_info (char *addr_exp, int from_tty) |
c906108c SS |
1697 | { |
1698 | registers_info (addr_exp, 1); | |
1699 | } | |
1700 | ||
1701 | void | |
fba45db2 | 1702 | nofp_registers_info (char *addr_exp, int from_tty) |
c906108c SS |
1703 | { |
1704 | registers_info (addr_exp, 0); | |
1705 | } | |
c906108c | 1706 | \f |
c5aa993b | 1707 | |
c906108c SS |
1708 | /* |
1709 | * TODO: | |
1710 | * Should save/restore the tty state since it might be that the | |
1711 | * program to be debugged was started on this tty and it wants | |
1712 | * the tty in some state other than what we want. If it's running | |
1713 | * on another terminal or without a terminal, then saving and | |
1714 | * restoring the tty state is a harmless no-op. | |
1715 | * This only needs to be done if we are attaching to a process. | |
1716 | */ | |
1717 | ||
1718 | /* | |
1719 | attach_command -- | |
1720 | takes a program started up outside of gdb and ``attaches'' to it. | |
1721 | This stops it cold in its tracks and allows us to start debugging it. | |
1722 | and wait for the trace-trap that results from attaching. */ | |
1723 | ||
1724 | void | |
fba45db2 | 1725 | attach_command (char *args, int from_tty) |
c906108c | 1726 | { |
c5aa993b JM |
1727 | char *exec_file; |
1728 | char *full_exec_path = NULL; | |
c906108c | 1729 | |
c5aa993b | 1730 | dont_repeat (); /* Not for the faint of heart */ |
c906108c SS |
1731 | |
1732 | if (target_has_execution) | |
1733 | { | |
1734 | if (query ("A program is being debugged already. Kill it? ")) | |
1735 | target_kill (); | |
1736 | else | |
1737 | error ("Not killed."); | |
1738 | } | |
1739 | ||
1740 | target_attach (args, from_tty); | |
1741 | ||
1742 | /* Set up the "saved terminal modes" of the inferior | |
1743 | based on what modes we are starting it with. */ | |
1744 | target_terminal_init (); | |
1745 | ||
1746 | /* Install inferior's terminal modes. */ | |
1747 | target_terminal_inferior (); | |
1748 | ||
1749 | /* Set up execution context to know that we should return from | |
1750 | wait_for_inferior as soon as the target reports a stop. */ | |
1751 | init_wait_for_inferior (); | |
1752 | clear_proceed_status (); | |
c906108c SS |
1753 | |
1754 | /* No traps are generated when attaching to inferior under Mach 3 | |
1755 | or GNU hurd. */ | |
1756 | #ifndef ATTACH_NO_WAIT | |
00373e55 | 1757 | stop_soon_quietly = 1; |
c906108c SS |
1758 | wait_for_inferior (); |
1759 | #endif | |
1760 | ||
1761 | /* | |
1762 | * If no exec file is yet known, try to determine it from the | |
1763 | * process itself. | |
1764 | */ | |
1765 | exec_file = (char *) get_exec_file (0); | |
c5aa993b JM |
1766 | if (!exec_file) |
1767 | { | |
39f77062 | 1768 | exec_file = target_pid_to_exec_file (PIDGET (inferior_ptid)); |
c5aa993b JM |
1769 | if (exec_file) |
1770 | { | |
1771 | /* It's possible we don't have a full path, but rather just a | |
1772 | filename. Some targets, such as HP-UX, don't provide the | |
1773 | full path, sigh. | |
1774 | ||
1775 | Attempt to qualify the filename against the source path. | |
1776 | (If that fails, we'll just fall back on the original | |
1777 | filename. Not much more we can do...) | |
1778 | */ | |
1779 | if (!source_full_path_of (exec_file, &full_exec_path)) | |
1780 | full_exec_path = savestring (exec_file, strlen (exec_file)); | |
1781 | ||
1782 | exec_file_attach (full_exec_path, from_tty); | |
1adeb98a | 1783 | symbol_file_add_main (full_exec_path, from_tty); |
c5aa993b | 1784 | } |
c906108c | 1785 | } |
c906108c SS |
1786 | |
1787 | #ifdef SOLIB_ADD | |
990f9fe3 FF |
1788 | /* Add shared library symbols from the newly attached process, if any. */ |
1789 | SOLIB_ADD ((char *) 0, from_tty, ¤t_target, auto_solib_add); | |
1790 | re_enable_breakpoints_in_shlibs (); | |
c906108c SS |
1791 | #endif |
1792 | ||
1793 | /* Take any necessary post-attaching actions for this platform. | |
c5aa993b | 1794 | */ |
39f77062 | 1795 | target_post_attach (PIDGET (inferior_ptid)); |
c906108c SS |
1796 | |
1797 | normal_stop (); | |
6426a772 JM |
1798 | |
1799 | if (attach_hook) | |
1800 | attach_hook (); | |
c906108c SS |
1801 | } |
1802 | ||
1803 | /* | |
1804 | * detach_command -- | |
1805 | * takes a program previously attached to and detaches it. | |
1806 | * The program resumes execution and will no longer stop | |
1807 | * on signals, etc. We better not have left any breakpoints | |
1808 | * in the program or it'll die when it hits one. For this | |
1809 | * to work, it may be necessary for the process to have been | |
1810 | * previously attached. It *might* work if the program was | |
1811 | * started via the normal ptrace (PTRACE_TRACEME). | |
1812 | */ | |
1813 | ||
1814 | static void | |
fba45db2 | 1815 | detach_command (char *args, int from_tty) |
c906108c | 1816 | { |
c5aa993b | 1817 | dont_repeat (); /* Not for the faint of heart */ |
c906108c SS |
1818 | target_detach (args, from_tty); |
1819 | #if defined(SOLIB_RESTART) | |
1820 | SOLIB_RESTART (); | |
1821 | #endif | |
6426a772 JM |
1822 | if (detach_hook) |
1823 | detach_hook (); | |
c906108c SS |
1824 | } |
1825 | ||
43ff13b4 JM |
1826 | /* Stop the execution of the target while running in async mode, in |
1827 | the backgound. */ | |
8926118c | 1828 | |
8b93c638 | 1829 | void |
fba45db2 | 1830 | interrupt_target_command_wrapper (char *args, int from_tty) |
8b93c638 JM |
1831 | { |
1832 | interrupt_target_command (args, from_tty); | |
1833 | } | |
8926118c | 1834 | |
43ff13b4 | 1835 | static void |
fba45db2 | 1836 | interrupt_target_command (char *args, int from_tty) |
43ff13b4 | 1837 | { |
6426a772 | 1838 | if (event_loop_p && target_can_async_p ()) |
43ff13b4 | 1839 | { |
c5aa993b | 1840 | dont_repeat (); /* Not for the faint of heart */ |
43ff13b4 JM |
1841 | target_stop (); |
1842 | } | |
1843 | } | |
1844 | ||
c906108c SS |
1845 | /* ARGSUSED */ |
1846 | static void | |
fba45db2 | 1847 | float_info (char *addr_exp, int from_tty) |
c906108c SS |
1848 | { |
1849 | #ifdef FLOAT_INFO | |
1850 | FLOAT_INFO; | |
1851 | #else | |
1852 | printf_filtered ("No floating point info available for this processor.\n"); | |
1853 | #endif | |
1854 | } | |
1855 | \f | |
1856 | /* ARGSUSED */ | |
1857 | static void | |
fba45db2 | 1858 | unset_command (char *args, int from_tty) |
c906108c SS |
1859 | { |
1860 | printf_filtered ("\"unset\" must be followed by the name of "); | |
1861 | printf_filtered ("an unset subcommand.\n"); | |
1862 | help_list (unsetlist, "unset ", -1, gdb_stdout); | |
1863 | } | |
1864 | ||
1865 | void | |
fba45db2 | 1866 | _initialize_infcmd (void) |
c906108c SS |
1867 | { |
1868 | struct cmd_list_element *c; | |
c5aa993b | 1869 | |
c94fdfd0 EZ |
1870 | c = add_com ("tty", class_run, tty_command, |
1871 | "Set terminal for future runs of program being debugged."); | |
fa58ee11 | 1872 | c->completer = filename_completer; |
c906108c | 1873 | |
fa58ee11 EZ |
1874 | c = add_set_cmd ("args", class_run, var_string_noescape, |
1875 | (char *) &inferior_args, | |
1876 | "Set argument list to give program being debugged when it is started.\n\ | |
c906108c | 1877 | Follow this command with any number of args, to be passed to the program.", |
fa58ee11 | 1878 | &setlist); |
fa58ee11 | 1879 | c->completer = filename_completer; |
9f60d481 | 1880 | set_cmd_sfunc (c, notice_args_set); |
552c04a7 | 1881 | c = add_show_from_set (c, &showlist); |
9f60d481 | 1882 | set_cmd_sfunc (c, notice_args_read); |
c906108c SS |
1883 | |
1884 | c = add_cmd | |
1885 | ("environment", no_class, environment_info, | |
1886 | "The environment to give the program, or one variable's value.\n\ | |
1887 | With an argument VAR, prints the value of environment variable VAR to\n\ | |
1888 | give the program being debugged. With no arguments, prints the entire\n\ | |
1889 | environment to be given to the program.", &showlist); | |
1890 | c->completer = noop_completer; | |
1891 | ||
1892 | add_prefix_cmd ("unset", no_class, unset_command, | |
1893 | "Complement to certain \"set\" commands", | |
1894 | &unsetlist, "unset ", 0, &cmdlist); | |
c5aa993b | 1895 | |
c906108c | 1896 | c = add_cmd ("environment", class_run, unset_environment_command, |
c5aa993b | 1897 | "Cancel environment variable VAR for the program.\n\ |
c906108c | 1898 | This does not affect the program until the next \"run\" command.", |
c5aa993b | 1899 | &unsetlist); |
c906108c SS |
1900 | c->completer = noop_completer; |
1901 | ||
1902 | c = add_cmd ("environment", class_run, set_environment_command, | |
1903 | "Set environment variable value to give the program.\n\ | |
1904 | Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\ | |
1905 | VALUES of environment variables are uninterpreted strings.\n\ | |
1906 | This does not affect the program until the next \"run\" command.", | |
c5aa993b | 1907 | &setlist); |
c906108c | 1908 | c->completer = noop_completer; |
c5aa993b | 1909 | |
fa58ee11 EZ |
1910 | c = add_com ("path", class_files, path_command, |
1911 | "Add directory DIR(s) to beginning of search path for object files.\n\ | |
c906108c SS |
1912 | $cwd in the path means the current working directory.\n\ |
1913 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
1914 | directories, separated by colons. These directories are searched to find\n\ | |
1915 | fully linked executable files and separately compiled object files as needed."); | |
fa58ee11 | 1916 | c->completer = filename_completer; |
c906108c SS |
1917 | |
1918 | c = add_cmd ("paths", no_class, path_info, | |
c5aa993b | 1919 | "Current search path for finding object files.\n\ |
c906108c SS |
1920 | $cwd in the path means the current working directory.\n\ |
1921 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
1922 | directories, separated by colons. These directories are searched to find\n\ | |
1923 | fully linked executable files and separately compiled object files as needed.", | |
1924 | &showlist); | |
1925 | c->completer = noop_completer; | |
1926 | ||
c5aa993b JM |
1927 | add_com ("attach", class_run, attach_command, |
1928 | "Attach to a process or file outside of GDB.\n\ | |
c906108c SS |
1929 | This command attaches to another target, of the same type as your last\n\ |
1930 | \"target\" command (\"info files\" will show your target stack).\n\ | |
1931 | The command may take as argument a process id or a device file.\n\ | |
1932 | For a process id, you must have permission to send the process a signal,\n\ | |
1933 | and it must have the same effective uid as the debugger.\n\ | |
1934 | When using \"attach\" with a process id, the debugger finds the\n\ | |
1935 | program running in the process, looking first in the current working\n\ | |
1936 | directory, or (if not found there) using the source file search path\n\ | |
1937 | (see the \"directory\" command). You can also use the \"file\" command\n\ | |
1938 | to specify the program, and to load its symbol table."); | |
1939 | ||
1940 | add_com ("detach", class_run, detach_command, | |
1941 | "Detach a process or file previously attached.\n\ | |
1942 | If a process, it is no longer traced, and it continues its execution. If\n\ | |
1943 | you were debugging a file, the file is closed and gdb no longer accesses it."); | |
1944 | ||
1945 | add_com ("signal", class_run, signal_command, | |
1946 | "Continue program giving it signal specified by the argument.\n\ | |
1947 | An argument of \"0\" means continue program without giving it a signal."); | |
1948 | ||
1949 | add_com ("stepi", class_run, stepi_command, | |
1950 | "Step one instruction exactly.\n\ | |
1951 | Argument N means do this N times (or till program stops for another reason)."); | |
1952 | add_com_alias ("si", "stepi", class_alias, 0); | |
1953 | ||
1954 | add_com ("nexti", class_run, nexti_command, | |
1955 | "Step one instruction, but proceed through subroutine calls.\n\ | |
1956 | Argument N means do this N times (or till program stops for another reason)."); | |
1957 | add_com_alias ("ni", "nexti", class_alias, 0); | |
1958 | ||
1959 | add_com ("finish", class_run, finish_command, | |
1960 | "Execute until selected stack frame returns.\n\ | |
1961 | Upon return, the value returned is printed and put in the value history."); | |
1962 | ||
1963 | add_com ("next", class_run, next_command, | |
1964 | "Step program, proceeding through subroutine calls.\n\ | |
1965 | Like the \"step\" command as long as subroutine calls do not happen;\n\ | |
1966 | when they do, the call is treated as one instruction.\n\ | |
1967 | Argument N means do this N times (or till program stops for another reason)."); | |
1968 | add_com_alias ("n", "next", class_run, 1); | |
1969 | if (xdb_commands) | |
c5aa993b | 1970 | add_com_alias ("S", "next", class_run, 1); |
c906108c SS |
1971 | |
1972 | add_com ("step", class_run, step_command, | |
1973 | "Step program until it reaches a different source line.\n\ | |
1974 | Argument N means do this N times (or till program stops for another reason)."); | |
1975 | add_com_alias ("s", "step", class_run, 1); | |
1976 | ||
c94fdfd0 EZ |
1977 | c = add_com ("until", class_run, until_command, |
1978 | "Execute until the program reaches a source line greater than the current\n\ | |
c906108c SS |
1979 | or a specified line or address or function (same args as break command).\n\ |
1980 | Execution will also stop upon exit from the current stack frame."); | |
c94fdfd0 | 1981 | c->completer = location_completer; |
c906108c | 1982 | add_com_alias ("u", "until", class_run, 1); |
c5aa993b | 1983 | |
c94fdfd0 EZ |
1984 | c = add_com ("jump", class_run, jump_command, |
1985 | "Continue program being debugged at specified line or address.\n\ | |
c906108c SS |
1986 | Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\ |
1987 | for an address to start at."); | |
c94fdfd0 | 1988 | c->completer = location_completer; |
c906108c | 1989 | |
b83266a0 | 1990 | if (xdb_commands) |
c94fdfd0 EZ |
1991 | { |
1992 | c = add_com ("go", class_run, go_command, | |
1993 | "Usage: go <location>\n\ | |
c906108c SS |
1994 | Continue program being debugged, stopping at specified line or \n\ |
1995 | address.\n\ | |
1996 | Give as argument either LINENUM or *ADDR, where ADDR is an \n\ | |
1997 | expression for an address to start at.\n\ | |
1998 | This command is a combination of tbreak and jump."); | |
c94fdfd0 EZ |
1999 | c->completer = location_completer; |
2000 | } | |
b83266a0 | 2001 | |
c906108c | 2002 | if (xdb_commands) |
c5aa993b | 2003 | add_com_alias ("g", "go", class_run, 1); |
c906108c SS |
2004 | |
2005 | add_com ("continue", class_run, continue_command, | |
2006 | "Continue program being debugged, after signal or breakpoint.\n\ | |
2007 | If proceeding from breakpoint, a number N may be used as an argument,\n\ | |
2008 | which means to set the ignore count of that breakpoint to N - 1 (so that\n\ | |
2009 | the breakpoint won't break until the Nth time it is reached)."); | |
2010 | add_com_alias ("c", "cont", class_run, 1); | |
2011 | add_com_alias ("fg", "cont", class_run, 1); | |
2012 | ||
fa58ee11 | 2013 | c = add_com ("run", class_run, run_command, |
c906108c SS |
2014 | "Start debugged program. You may specify arguments to give it.\n\ |
2015 | Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\ | |
2016 | Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\ | |
2017 | With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\ | |
2018 | To cancel previous arguments and run with no arguments,\n\ | |
2019 | use \"set args\" without arguments."); | |
fa58ee11 | 2020 | c->completer = filename_completer; |
c906108c SS |
2021 | add_com_alias ("r", "run", class_run, 1); |
2022 | if (xdb_commands) | |
2023 | add_com ("R", class_run, run_no_args_command, | |
c5aa993b | 2024 | "Start debugged program with no arguments."); |
c906108c | 2025 | |
43ff13b4 JM |
2026 | add_com ("interrupt", class_run, interrupt_target_command, |
2027 | "Interrupt the execution of the debugged program."); | |
2028 | ||
c906108c | 2029 | add_info ("registers", nofp_registers_info, |
c5aa993b | 2030 | "List of integer registers and their contents, for selected stack frame.\n\ |
c906108c | 2031 | Register name as argument means describe only that register."); |
7194c49b | 2032 | add_info_alias ("r", "registers", 1); |
c906108c SS |
2033 | |
2034 | if (xdb_commands) | |
c5aa993b JM |
2035 | add_com ("lr", class_info, nofp_registers_info, |
2036 | "List of integer registers and their contents, for selected stack frame.\n\ | |
c906108c SS |
2037 | Register name as argument means describe only that register."); |
2038 | add_info ("all-registers", all_registers_info, | |
c5aa993b | 2039 | "List of all registers and their contents, for selected stack frame.\n\ |
c906108c SS |
2040 | Register name as argument means describe only that register."); |
2041 | ||
2042 | add_info ("program", program_info, | |
2043 | "Execution status of the program."); | |
2044 | ||
2045 | add_info ("float", float_info, | |
2046 | "Print the status of the floating point unit\n"); | |
2047 | ||
c906108c SS |
2048 | inferior_environ = make_environ (); |
2049 | init_environ (inferior_environ); | |
2050 | } |