Commit | Line | Data |
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c906108c | 1 | /* Memory-access and commands for "inferior" process, for GDB. |
b6ba6518 KB |
2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
3 | 1996, 1997, 1998, 1999, 2000, 2001 | |
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" | |
8b93c638 JM |
39 | #ifdef UI_OUT |
40 | #include "ui-out.h" | |
41 | #endif | |
6426a772 | 42 | #include "event-top.h" |
96baa820 | 43 | #include "parser-defs.h" |
c906108c SS |
44 | |
45 | /* Functions exported for general use: */ | |
46 | ||
a14ed312 | 47 | void nofp_registers_info (char *, int); |
c906108c | 48 | |
a14ed312 | 49 | void all_registers_info (char *, int); |
c906108c | 50 | |
a14ed312 | 51 | void registers_info (char *, int); |
c906108c SS |
52 | |
53 | /* Local functions: */ | |
54 | ||
a14ed312 | 55 | void continue_command (char *, int); |
c906108c | 56 | |
11cf8741 JM |
57 | static void print_return_value (int struct_return, struct type *value_type); |
58 | ||
a14ed312 | 59 | static void finish_command_continuation (struct continuation_arg *); |
43ff13b4 | 60 | |
a14ed312 | 61 | static void until_next_command (int); |
c906108c | 62 | |
a14ed312 | 63 | static void until_command (char *, int); |
c906108c | 64 | |
a14ed312 | 65 | static void path_info (char *, int); |
c906108c | 66 | |
a14ed312 | 67 | static void path_command (char *, int); |
c906108c | 68 | |
a14ed312 | 69 | static void unset_command (char *, int); |
c906108c | 70 | |
a14ed312 | 71 | static void float_info (char *, int); |
c906108c | 72 | |
a14ed312 | 73 | static void detach_command (char *, int); |
c906108c | 74 | |
96baa820 JM |
75 | static void interrupt_target_command (char *args, int from_tty); |
76 | ||
a14ed312 | 77 | static void unset_environment_command (char *, int); |
c906108c | 78 | |
a14ed312 | 79 | static void set_environment_command (char *, int); |
c906108c | 80 | |
a14ed312 | 81 | static void environment_info (char *, int); |
c906108c | 82 | |
a14ed312 | 83 | static void program_info (char *, int); |
c906108c | 84 | |
a14ed312 | 85 | static void finish_command (char *, int); |
c906108c | 86 | |
a14ed312 | 87 | static void signal_command (char *, int); |
c906108c | 88 | |
a14ed312 | 89 | static void jump_command (char *, int); |
c906108c | 90 | |
a14ed312 | 91 | static void step_1 (int, int, char *); |
c2d11a7d JM |
92 | static void step_once (int skip_subroutines, int single_inst, int count); |
93 | static void step_1_continuation (struct continuation_arg *arg); | |
c906108c | 94 | |
a14ed312 | 95 | void nexti_command (char *, int); |
c906108c | 96 | |
a14ed312 | 97 | void stepi_command (char *, int); |
c906108c | 98 | |
a14ed312 | 99 | static void next_command (char *, int); |
c906108c | 100 | |
a14ed312 | 101 | static void step_command (char *, int); |
c906108c | 102 | |
a14ed312 | 103 | static void run_command (char *, int); |
c906108c | 104 | |
a14ed312 | 105 | static void run_no_args_command (char *args, int from_tty); |
392a587b | 106 | |
a14ed312 | 107 | static void go_command (char *line_no, int from_tty); |
392a587b | 108 | |
a14ed312 | 109 | static int strip_bg_char (char **); |
43ff13b4 | 110 | |
a14ed312 | 111 | void _initialize_infcmd (void); |
c906108c SS |
112 | |
113 | #define GO_USAGE "Usage: go <location>\n" | |
114 | ||
a14ed312 | 115 | static void breakpoint_auto_delete_contents (PTR); |
c906108c SS |
116 | |
117 | #define ERROR_NO_INFERIOR \ | |
118 | if (!target_has_execution) error ("The program is not being run."); | |
119 | ||
120 | /* String containing arguments to give to the program, separated by spaces. | |
121 | Empty string (pointer to '\0') means no args. */ | |
122 | ||
123 | static char *inferior_args; | |
124 | ||
125 | /* File name for default use for standard in/out in the inferior. */ | |
126 | ||
127 | char *inferior_io_terminal; | |
128 | ||
129 | /* Pid of our debugged inferior, or 0 if no inferior now. | |
130 | Since various parts of infrun.c test this to see whether there is a program | |
131 | being debugged it should be nonzero (currently 3 is used) for remote | |
132 | debugging. */ | |
133 | ||
39f77062 | 134 | ptid_t inferior_ptid; |
c906108c SS |
135 | |
136 | /* Last signal that the inferior received (why it stopped). */ | |
137 | ||
138 | enum target_signal stop_signal; | |
139 | ||
140 | /* Address at which inferior stopped. */ | |
141 | ||
142 | CORE_ADDR stop_pc; | |
143 | ||
144 | /* Chain containing status of breakpoint(s) that we have stopped at. */ | |
145 | ||
146 | bpstat stop_bpstat; | |
147 | ||
148 | /* Flag indicating that a command has proceeded the inferior past the | |
149 | current breakpoint. */ | |
150 | ||
151 | int breakpoint_proceeded; | |
152 | ||
153 | /* Nonzero if stopped due to a step command. */ | |
154 | ||
155 | int stop_step; | |
156 | ||
157 | /* Nonzero if stopped due to completion of a stack dummy routine. */ | |
158 | ||
159 | int stop_stack_dummy; | |
160 | ||
161 | /* Nonzero if stopped due to a random (unexpected) signal in inferior | |
162 | process. */ | |
163 | ||
164 | int stopped_by_random_signal; | |
165 | ||
166 | /* Range to single step within. | |
167 | If this is nonzero, respond to a single-step signal | |
168 | by continuing to step if the pc is in this range. */ | |
169 | ||
c5aa993b JM |
170 | CORE_ADDR step_range_start; /* Inclusive */ |
171 | CORE_ADDR step_range_end; /* Exclusive */ | |
c906108c SS |
172 | |
173 | /* Stack frame address as of when stepping command was issued. | |
174 | This is how we know when we step into a subroutine call, | |
175 | and how to set the frame for the breakpoint used to step out. */ | |
176 | ||
177 | CORE_ADDR step_frame_address; | |
178 | ||
179 | /* Our notion of the current stack pointer. */ | |
180 | ||
181 | CORE_ADDR step_sp; | |
182 | ||
5fbbeb29 | 183 | enum step_over_calls_kind step_over_calls; |
c906108c SS |
184 | |
185 | /* If stepping, nonzero means step count is > 1 | |
186 | so don't print frame next time inferior stops | |
187 | if it stops due to stepping. */ | |
188 | ||
189 | int step_multi; | |
190 | ||
191 | /* Environment to use for running inferior, | |
192 | in format described in environ.h. */ | |
193 | ||
194 | struct environ *inferior_environ; | |
c906108c | 195 | \f |
07091751 FN |
196 | /* Accessor routines. */ |
197 | ||
198 | char * | |
199 | get_inferior_args (void) | |
200 | { | |
201 | return inferior_args; | |
202 | } | |
203 | ||
204 | char * | |
205 | set_inferior_args (char *newargs) | |
206 | { | |
207 | char *saved_args = inferior_args; | |
208 | ||
209 | inferior_args = newargs; | |
210 | ||
211 | return saved_args; | |
212 | } | |
c5aa993b | 213 | |
43ff13b4 JM |
214 | /* This function detects whether or not a '&' character (indicating |
215 | background execution) has been added as *the last* of the arguments ARGS | |
216 | of a command. If it has, it removes it and returns 1. Otherwise it | |
217 | does nothing and returns 0. */ | |
c5aa993b | 218 | static int |
fba45db2 | 219 | strip_bg_char (char **args) |
43ff13b4 JM |
220 | { |
221 | char *p = NULL; | |
c5aa993b | 222 | |
9846de1b | 223 | p = strchr (*args, '&'); |
c5aa993b | 224 | |
9846de1b | 225 | if (p) |
43ff13b4 JM |
226 | { |
227 | if (p == (*args + strlen (*args) - 1)) | |
228 | { | |
c5aa993b | 229 | if (strlen (*args) > 1) |
43ff13b4 JM |
230 | { |
231 | do | |
232 | p--; | |
233 | while (*p == ' ' || *p == '\t'); | |
234 | *(p + 1) = '\0'; | |
235 | } | |
236 | else | |
237 | *args = 0; | |
238 | return 1; | |
239 | } | |
240 | } | |
241 | return 0; | |
242 | } | |
243 | ||
c906108c SS |
244 | /* ARGSUSED */ |
245 | void | |
fba45db2 | 246 | tty_command (char *file, int from_tty) |
c906108c SS |
247 | { |
248 | if (file == 0) | |
249 | error_no_arg ("terminal name for running target process"); | |
250 | ||
251 | inferior_io_terminal = savestring (file, strlen (file)); | |
252 | } | |
253 | ||
254 | static void | |
fba45db2 | 255 | run_command (char *args, int from_tty) |
c906108c SS |
256 | { |
257 | char *exec_file; | |
258 | ||
259 | dont_repeat (); | |
260 | ||
39f77062 | 261 | if (! ptid_equal (inferior_ptid, null_ptid) && target_has_execution) |
c906108c | 262 | { |
adf40b2e JM |
263 | if (from_tty |
264 | && !query ("The program being debugged has been started already.\n\ | |
c906108c SS |
265 | Start it from the beginning? ")) |
266 | error ("Program not restarted."); | |
267 | target_kill (); | |
268 | #if defined(SOLIB_RESTART) | |
269 | SOLIB_RESTART (); | |
270 | #endif | |
271 | init_wait_for_inferior (); | |
272 | } | |
273 | ||
274 | clear_breakpoint_hit_counts (); | |
275 | ||
276 | exec_file = (char *) get_exec_file (0); | |
277 | ||
278 | /* Purge old solib objfiles. */ | |
279 | objfile_purge_solibs (); | |
280 | ||
281 | do_run_cleanups (NULL); | |
282 | ||
283 | /* The exec file is re-read every time we do a generic_mourn_inferior, so | |
284 | we just have to worry about the symbol file. */ | |
285 | reread_symbols (); | |
286 | ||
287 | /* We keep symbols from add-symbol-file, on the grounds that the | |
288 | user might want to add some symbols before running the program | |
289 | (right?). But sometimes (dynamic loading where the user manually | |
290 | introduces the new symbols with add-symbol-file), the code which | |
291 | the symbols describe does not persist between runs. Currently | |
292 | the user has to manually nuke all symbols between runs if they | |
293 | want them to go away (PR 2207). This is probably reasonable. */ | |
294 | ||
43ff13b4 | 295 | if (!args) |
6426a772 JM |
296 | { |
297 | if (event_loop_p && target_can_async_p ()) | |
298 | async_disable_stdin (); | |
299 | } | |
43ff13b4 | 300 | else |
c906108c | 301 | { |
43ff13b4 JM |
302 | int async_exec = strip_bg_char (&args); |
303 | ||
304 | /* If we get a request for running in the bg but the target | |
305 | doesn't support it, error out. */ | |
6426a772 | 306 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
307 | error ("Asynchronous execution not supported on this target."); |
308 | ||
309 | /* If we don't get a request of running in the bg, then we need | |
c5aa993b | 310 | to simulate synchronous (fg) execution. */ |
6426a772 | 311 | if (event_loop_p && !async_exec && target_can_async_p ()) |
43ff13b4 JM |
312 | { |
313 | /* Simulate synchronous execution */ | |
6426a772 | 314 | async_disable_stdin (); |
43ff13b4 JM |
315 | } |
316 | ||
317 | /* If there were other args, beside '&', process them. */ | |
318 | if (args) | |
319 | { | |
07091751 FN |
320 | char *old_args = set_inferior_args (xstrdup (args)); |
321 | xfree (old_args); | |
43ff13b4 | 322 | } |
c906108c SS |
323 | } |
324 | ||
325 | if (from_tty) | |
326 | { | |
8b93c638 JM |
327 | #ifdef UI_OUT |
328 | ui_out_field_string (uiout, NULL, "Starting program"); | |
329 | ui_out_text (uiout, ": "); | |
330 | if (exec_file) | |
331 | ui_out_field_string (uiout, "execfile", exec_file); | |
332 | ui_out_spaces (uiout, 1); | |
333 | ui_out_field_string (uiout, "infargs", inferior_args); | |
334 | ui_out_text (uiout, "\n"); | |
335 | ui_out_flush (uiout); | |
336 | #else | |
c5aa993b | 337 | puts_filtered ("Starting program: "); |
c906108c | 338 | if (exec_file) |
c5aa993b JM |
339 | puts_filtered (exec_file); |
340 | puts_filtered (" "); | |
341 | puts_filtered (inferior_args); | |
342 | puts_filtered ("\n"); | |
c906108c | 343 | gdb_flush (gdb_stdout); |
8b93c638 | 344 | #endif |
c906108c SS |
345 | } |
346 | ||
347 | target_create_inferior (exec_file, inferior_args, | |
348 | environ_vector (inferior_environ)); | |
349 | } | |
350 | ||
351 | ||
352 | static void | |
fba45db2 | 353 | run_no_args_command (char *args, int from_tty) |
c906108c | 354 | { |
07091751 FN |
355 | char *old_args = set_inferior_args (xstrdup ("")); |
356 | xfree (old_args); | |
c906108c | 357 | } |
c906108c | 358 | \f |
c5aa993b | 359 | |
c906108c | 360 | void |
fba45db2 | 361 | continue_command (char *proc_count_exp, int from_tty) |
c906108c | 362 | { |
c5aa993b | 363 | int async_exec = 0; |
c906108c SS |
364 | ERROR_NO_INFERIOR; |
365 | ||
43ff13b4 JM |
366 | /* Find out whether we must run in the background. */ |
367 | if (proc_count_exp != NULL) | |
368 | async_exec = strip_bg_char (&proc_count_exp); | |
369 | ||
370 | /* If we must run in the background, but the target can't do it, | |
371 | error out. */ | |
6426a772 | 372 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
373 | error ("Asynchronous execution not supported on this target."); |
374 | ||
375 | /* If we are not asked to run in the bg, then prepare to run in the | |
376 | foreground, synchronously. */ | |
6426a772 | 377 | if (event_loop_p && !async_exec && target_can_async_p ()) |
c5aa993b | 378 | { |
43ff13b4 | 379 | /* Simulate synchronous execution */ |
6426a772 | 380 | async_disable_stdin (); |
43ff13b4 | 381 | } |
c906108c | 382 | |
43ff13b4 JM |
383 | /* If have argument (besides '&'), set proceed count of breakpoint |
384 | we stopped at. */ | |
c906108c SS |
385 | if (proc_count_exp != NULL) |
386 | { | |
387 | bpstat bs = stop_bpstat; | |
388 | int num = bpstat_num (&bs); | |
389 | if (num == 0 && from_tty) | |
390 | { | |
391 | printf_filtered | |
392 | ("Not stopped at any breakpoint; argument ignored.\n"); | |
393 | } | |
394 | while (num != 0) | |
395 | { | |
396 | set_ignore_count (num, | |
bb518678 | 397 | parse_and_eval_long (proc_count_exp) - 1, |
c906108c SS |
398 | from_tty); |
399 | /* set_ignore_count prints a message ending with a period. | |
400 | So print two spaces before "Continuing.". */ | |
401 | if (from_tty) | |
402 | printf_filtered (" "); | |
403 | num = bpstat_num (&bs); | |
404 | } | |
405 | } | |
406 | ||
407 | if (from_tty) | |
408 | printf_filtered ("Continuing.\n"); | |
409 | ||
410 | clear_proceed_status (); | |
411 | ||
2acceee2 | 412 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); |
c906108c SS |
413 | } |
414 | \f | |
415 | /* Step until outside of current statement. */ | |
416 | ||
417 | /* ARGSUSED */ | |
418 | static void | |
fba45db2 | 419 | step_command (char *count_string, int from_tty) |
c906108c SS |
420 | { |
421 | step_1 (0, 0, count_string); | |
422 | } | |
423 | ||
424 | /* Likewise, but skip over subroutine calls as if single instructions. */ | |
425 | ||
426 | /* ARGSUSED */ | |
427 | static void | |
fba45db2 | 428 | next_command (char *count_string, int from_tty) |
c906108c SS |
429 | { |
430 | step_1 (1, 0, count_string); | |
431 | } | |
432 | ||
433 | /* Likewise, but step only one instruction. */ | |
434 | ||
435 | /* ARGSUSED */ | |
436 | void | |
fba45db2 | 437 | stepi_command (char *count_string, int from_tty) |
c906108c SS |
438 | { |
439 | step_1 (0, 1, count_string); | |
440 | } | |
441 | ||
442 | /* ARGSUSED */ | |
443 | void | |
fba45db2 | 444 | nexti_command (char *count_string, int from_tty) |
c906108c SS |
445 | { |
446 | step_1 (1, 1, count_string); | |
447 | } | |
448 | ||
74b7792f AC |
449 | static void |
450 | disable_longjmp_breakpoint_cleanup (void *ignore) | |
451 | { | |
452 | disable_longjmp_breakpoint (); | |
453 | } | |
454 | ||
c906108c | 455 | static void |
fba45db2 | 456 | step_1 (int skip_subroutines, int single_inst, char *count_string) |
c906108c SS |
457 | { |
458 | register int count = 1; | |
459 | struct frame_info *frame; | |
460 | struct cleanup *cleanups = 0; | |
43ff13b4 | 461 | int async_exec = 0; |
c5aa993b | 462 | |
c906108c | 463 | ERROR_NO_INFERIOR; |
43ff13b4 JM |
464 | |
465 | if (count_string) | |
466 | async_exec = strip_bg_char (&count_string); | |
c5aa993b | 467 | |
43ff13b4 JM |
468 | /* If we get a request for running in the bg but the target |
469 | doesn't support it, error out. */ | |
6426a772 | 470 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
471 | error ("Asynchronous execution not supported on this target."); |
472 | ||
473 | /* If we don't get a request of running in the bg, then we need | |
474 | to simulate synchronous (fg) execution. */ | |
6426a772 | 475 | if (event_loop_p && !async_exec && target_can_async_p ()) |
43ff13b4 JM |
476 | { |
477 | /* Simulate synchronous execution */ | |
6426a772 | 478 | async_disable_stdin (); |
43ff13b4 JM |
479 | } |
480 | ||
bb518678 | 481 | count = count_string ? parse_and_eval_long (count_string) : 1; |
c906108c | 482 | |
c5aa993b | 483 | if (!single_inst || skip_subroutines) /* leave si command alone */ |
c906108c | 484 | { |
c5aa993b | 485 | enable_longjmp_breakpoint (); |
c2d11a7d | 486 | if (!event_loop_p || !target_can_async_p ()) |
74b7792f | 487 | cleanups = make_cleanup (disable_longjmp_breakpoint_cleanup, 0 /*ignore*/); |
c2d11a7d | 488 | else |
74b7792f | 489 | make_exec_cleanup (disable_longjmp_breakpoint_cleanup, 0 /*ignore*/); |
c2d11a7d JM |
490 | } |
491 | ||
492 | /* In synchronous case, all is well, just use the regular for loop. */ | |
493 | if (!event_loop_p || !target_can_async_p ()) | |
494 | { | |
495 | for (; count > 0; count--) | |
496 | { | |
497 | clear_proceed_status (); | |
498 | ||
499 | frame = get_current_frame (); | |
500 | if (!frame) /* Avoid coredump here. Why tho? */ | |
501 | error ("No current frame"); | |
502 | step_frame_address = FRAME_FP (frame); | |
503 | step_sp = read_sp (); | |
504 | ||
505 | if (!single_inst) | |
506 | { | |
507 | find_pc_line_pc_range (stop_pc, &step_range_start, &step_range_end); | |
508 | if (step_range_end == 0) | |
509 | { | |
510 | char *name; | |
511 | if (find_pc_partial_function (stop_pc, &name, &step_range_start, | |
512 | &step_range_end) == 0) | |
513 | error ("Cannot find bounds of current function"); | |
514 | ||
515 | target_terminal_ours (); | |
516 | printf_filtered ("\ | |
517 | Single stepping until exit from function %s, \n\ | |
518 | which has no line number information.\n", name); | |
519 | } | |
520 | } | |
521 | else | |
522 | { | |
523 | /* Say we are stepping, but stop after one insn whatever it does. */ | |
524 | step_range_start = step_range_end = 1; | |
525 | if (!skip_subroutines) | |
526 | /* It is stepi. | |
527 | Don't step over function calls, not even to functions lacking | |
528 | line numbers. */ | |
5fbbeb29 | 529 | step_over_calls = STEP_OVER_NONE; |
c2d11a7d JM |
530 | } |
531 | ||
532 | if (skip_subroutines) | |
5fbbeb29 | 533 | step_over_calls = STEP_OVER_ALL; |
c2d11a7d JM |
534 | |
535 | step_multi = (count > 1); | |
536 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); | |
537 | ||
538 | if (!stop_step) | |
539 | break; | |
540 | ||
541 | /* FIXME: On nexti, this may have already been done (when we hit the | |
542 | step resume break, I think). Probably this should be moved to | |
543 | wait_for_inferior (near the top). */ | |
544 | #if defined (SHIFT_INST_REGS) | |
545 | SHIFT_INST_REGS (); | |
546 | #endif | |
547 | } | |
548 | ||
549 | if (!single_inst || skip_subroutines) | |
550 | do_cleanups (cleanups); | |
551 | return; | |
552 | } | |
553 | /* In case of asynchronous target things get complicated, do only | |
554 | one step for now, before returning control to the event loop. Let | |
555 | the continuation figure out how many other steps we need to do, | |
556 | and handle them one at the time, through step_once(). */ | |
557 | else | |
558 | { | |
559 | if (event_loop_p && target_can_async_p ()) | |
560 | step_once (skip_subroutines, single_inst, count); | |
c906108c | 561 | } |
c2d11a7d | 562 | } |
c906108c | 563 | |
c2d11a7d JM |
564 | /* Called after we are done with one step operation, to check whether |
565 | we need to step again, before we print the prompt and return control | |
566 | to the user. If count is > 1, we will need to do one more call to | |
567 | proceed(), via step_once(). Basically it is like step_once and | |
568 | step_1_continuation are co-recursive. */ | |
569 | static void | |
fba45db2 | 570 | step_1_continuation (struct continuation_arg *arg) |
c2d11a7d | 571 | { |
57e687d9 MS |
572 | int count; |
573 | int skip_subroutines; | |
574 | int single_inst; | |
575 | ||
576 | skip_subroutines = arg->data.integer; | |
577 | single_inst = arg->next->data.integer; | |
578 | count = arg->next->next->data.integer; | |
579 | ||
580 | if (stop_step) | |
581 | { | |
582 | /* FIXME: On nexti, this may have already been done (when we hit the | |
583 | step resume break, I think). Probably this should be moved to | |
584 | wait_for_inferior (near the top). */ | |
c2d11a7d | 585 | #if defined (SHIFT_INST_REGS) |
57e687d9 | 586 | SHIFT_INST_REGS (); |
c2d11a7d | 587 | #endif |
57e687d9 MS |
588 | step_once (skip_subroutines, single_inst, count - 1); |
589 | } | |
590 | else | |
591 | if (!single_inst || skip_subroutines) | |
592 | do_exec_cleanups (ALL_CLEANUPS); | |
c2d11a7d JM |
593 | } |
594 | ||
595 | /* Do just one step operation. If count >1 we will have to set up a | |
596 | continuation to be done after the target stops (after this one | |
597 | step). This is useful to implement the 'step n' kind of commands, in | |
598 | case of asynchronous targets. We had to split step_1 into two parts, | |
599 | one to be done before proceed() and one afterwards. This function is | |
600 | called in case of step n with n>1, after the first step operation has | |
601 | been completed.*/ | |
602 | static void | |
0d06e24b | 603 | step_once (int skip_subroutines, int single_inst, int count) |
c2d11a7d | 604 | { |
0d06e24b JM |
605 | struct continuation_arg *arg1; |
606 | struct continuation_arg *arg2; | |
607 | struct continuation_arg *arg3; | |
608 | struct frame_info *frame; | |
c2d11a7d JM |
609 | |
610 | if (count > 0) | |
c906108c SS |
611 | { |
612 | clear_proceed_status (); | |
613 | ||
614 | frame = get_current_frame (); | |
c5aa993b | 615 | if (!frame) /* Avoid coredump here. Why tho? */ |
c906108c SS |
616 | error ("No current frame"); |
617 | step_frame_address = FRAME_FP (frame); | |
618 | step_sp = read_sp (); | |
619 | ||
c5aa993b | 620 | if (!single_inst) |
c906108c SS |
621 | { |
622 | find_pc_line_pc_range (stop_pc, &step_range_start, &step_range_end); | |
5fbbeb29 CF |
623 | |
624 | /* If we have no line info, switch to stepi mode. */ | |
625 | if (step_range_end == 0 && step_stop_if_no_debug) | |
626 | { | |
627 | step_range_start = step_range_end = 1; | |
628 | } | |
629 | else if (step_range_end == 0) | |
c906108c SS |
630 | { |
631 | char *name; | |
632 | if (find_pc_partial_function (stop_pc, &name, &step_range_start, | |
633 | &step_range_end) == 0) | |
634 | error ("Cannot find bounds of current function"); | |
635 | ||
636 | target_terminal_ours (); | |
637 | printf_filtered ("\ | |
638 | Single stepping until exit from function %s, \n\ | |
639 | which has no line number information.\n", name); | |
640 | } | |
641 | } | |
642 | else | |
643 | { | |
644 | /* Say we are stepping, but stop after one insn whatever it does. */ | |
645 | step_range_start = step_range_end = 1; | |
646 | if (!skip_subroutines) | |
647 | /* It is stepi. | |
648 | Don't step over function calls, not even to functions lacking | |
649 | line numbers. */ | |
5fbbeb29 | 650 | step_over_calls = STEP_OVER_NONE; |
c906108c SS |
651 | } |
652 | ||
653 | if (skip_subroutines) | |
5fbbeb29 | 654 | step_over_calls = STEP_OVER_ALL; |
c906108c SS |
655 | |
656 | step_multi = (count > 1); | |
c2d11a7d JM |
657 | arg1 = |
658 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
659 | arg2 = | |
660 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
661 | arg3 = | |
662 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
663 | arg1->next = arg2; | |
57e687d9 | 664 | arg1->data.integer = skip_subroutines; |
c2d11a7d | 665 | arg2->next = arg3; |
57e687d9 | 666 | arg2->data.integer = single_inst; |
c2d11a7d | 667 | arg3->next = NULL; |
57e687d9 | 668 | arg3->data.integer = count; |
c2d11a7d | 669 | add_intermediate_continuation (step_1_continuation, arg1); |
2acceee2 | 670 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); |
c906108c | 671 | } |
c906108c | 672 | } |
c2d11a7d | 673 | |
c906108c SS |
674 | \f |
675 | /* Continue program at specified address. */ | |
676 | ||
677 | static void | |
fba45db2 | 678 | jump_command (char *arg, int from_tty) |
c906108c SS |
679 | { |
680 | register CORE_ADDR addr; | |
681 | struct symtabs_and_lines sals; | |
682 | struct symtab_and_line sal; | |
683 | struct symbol *fn; | |
684 | struct symbol *sfn; | |
43ff13b4 | 685 | int async_exec = 0; |
c5aa993b | 686 | |
c906108c SS |
687 | ERROR_NO_INFERIOR; |
688 | ||
43ff13b4 JM |
689 | /* Find out whether we must run in the background. */ |
690 | if (arg != NULL) | |
691 | async_exec = strip_bg_char (&arg); | |
692 | ||
693 | /* If we must run in the background, but the target can't do it, | |
694 | error out. */ | |
6426a772 | 695 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
696 | error ("Asynchronous execution not supported on this target."); |
697 | ||
698 | /* If we are not asked to run in the bg, then prepare to run in the | |
699 | foreground, synchronously. */ | |
6426a772 | 700 | if (event_loop_p && !async_exec && target_can_async_p ()) |
c5aa993b | 701 | { |
43ff13b4 | 702 | /* Simulate synchronous execution */ |
6426a772 | 703 | async_disable_stdin (); |
43ff13b4 JM |
704 | } |
705 | ||
c906108c SS |
706 | if (!arg) |
707 | error_no_arg ("starting address"); | |
708 | ||
709 | sals = decode_line_spec_1 (arg, 1); | |
710 | if (sals.nelts != 1) | |
711 | { | |
712 | error ("Unreasonable jump request"); | |
713 | } | |
714 | ||
715 | sal = sals.sals[0]; | |
b8c9b27d | 716 | xfree (sals.sals); |
c906108c SS |
717 | |
718 | if (sal.symtab == 0 && sal.pc == 0) | |
719 | error ("No source file has been specified."); | |
720 | ||
c5aa993b | 721 | resolve_sal_pc (&sal); /* May error out */ |
c906108c SS |
722 | |
723 | /* See if we are trying to jump to another function. */ | |
724 | fn = get_frame_function (get_current_frame ()); | |
725 | sfn = find_pc_function (sal.pc); | |
726 | if (fn != NULL && sfn != fn) | |
727 | { | |
728 | if (!query ("Line %d is not in `%s'. Jump anyway? ", sal.line, | |
729 | SYMBOL_SOURCE_NAME (fn))) | |
730 | { | |
731 | error ("Not confirmed."); | |
732 | /* NOTREACHED */ | |
733 | } | |
734 | } | |
735 | ||
c5aa993b | 736 | if (sfn != NULL) |
c906108c SS |
737 | { |
738 | fixup_symbol_section (sfn, 0); | |
c5aa993b | 739 | if (section_is_overlay (SYMBOL_BFD_SECTION (sfn)) && |
c906108c SS |
740 | !section_is_mapped (SYMBOL_BFD_SECTION (sfn))) |
741 | { | |
742 | if (!query ("WARNING!!! Destination is in unmapped overlay! Jump anyway? ")) | |
743 | { | |
744 | error ("Not confirmed."); | |
745 | /* NOTREACHED */ | |
746 | } | |
747 | } | |
748 | } | |
749 | ||
c906108c SS |
750 | addr = sal.pc; |
751 | ||
752 | if (from_tty) | |
753 | { | |
754 | printf_filtered ("Continuing at "); | |
755 | print_address_numeric (addr, 1, gdb_stdout); | |
756 | printf_filtered (".\n"); | |
757 | } | |
758 | ||
759 | clear_proceed_status (); | |
760 | proceed (addr, TARGET_SIGNAL_0, 0); | |
761 | } | |
c906108c | 762 | \f |
c5aa993b | 763 | |
c906108c SS |
764 | /* Go to line or address in current procedure */ |
765 | static void | |
fba45db2 | 766 | go_command (char *line_no, int from_tty) |
c906108c | 767 | { |
c5aa993b | 768 | if (line_no == (char *) NULL || !*line_no) |
b83266a0 | 769 | printf_filtered (GO_USAGE); |
c906108c SS |
770 | else |
771 | { | |
b83266a0 SS |
772 | tbreak_command (line_no, from_tty); |
773 | jump_command (line_no, from_tty); | |
c906108c SS |
774 | } |
775 | } | |
c906108c | 776 | \f |
c5aa993b | 777 | |
c906108c SS |
778 | /* Continue program giving it specified signal. */ |
779 | ||
780 | static void | |
fba45db2 | 781 | signal_command (char *signum_exp, int from_tty) |
c906108c SS |
782 | { |
783 | enum target_signal oursig; | |
784 | ||
785 | dont_repeat (); /* Too dangerous. */ | |
786 | ERROR_NO_INFERIOR; | |
787 | ||
788 | if (!signum_exp) | |
789 | error_no_arg ("signal number"); | |
790 | ||
791 | /* It would be even slicker to make signal names be valid expressions, | |
792 | (the type could be "enum $signal" or some such), then the user could | |
793 | assign them to convenience variables. */ | |
794 | oursig = target_signal_from_name (signum_exp); | |
795 | ||
796 | if (oursig == TARGET_SIGNAL_UNKNOWN) | |
797 | { | |
798 | /* No, try numeric. */ | |
bb518678 | 799 | int num = parse_and_eval_long (signum_exp); |
c906108c SS |
800 | |
801 | if (num == 0) | |
802 | oursig = TARGET_SIGNAL_0; | |
803 | else | |
804 | oursig = target_signal_from_command (num); | |
805 | } | |
806 | ||
807 | if (from_tty) | |
808 | { | |
809 | if (oursig == TARGET_SIGNAL_0) | |
810 | printf_filtered ("Continuing with no signal.\n"); | |
811 | else | |
812 | printf_filtered ("Continuing with signal %s.\n", | |
813 | target_signal_to_name (oursig)); | |
814 | } | |
815 | ||
816 | clear_proceed_status (); | |
817 | /* "signal 0" should not get stuck if we are stopped at a breakpoint. | |
818 | FIXME: Neither should "signal foo" but when I tried passing | |
819 | (CORE_ADDR)-1 unconditionally I got a testsuite failure which I haven't | |
820 | tried to track down yet. */ | |
2acceee2 | 821 | proceed (oursig == TARGET_SIGNAL_0 ? (CORE_ADDR) -1 : stop_pc, oursig, 0); |
c906108c SS |
822 | } |
823 | ||
824 | /* Call breakpoint_auto_delete on the current contents of the bpstat | |
825 | pointed to by arg (which is really a bpstat *). */ | |
826 | ||
c906108c | 827 | static void |
fba45db2 | 828 | breakpoint_auto_delete_contents (PTR arg) |
c906108c | 829 | { |
c5aa993b | 830 | breakpoint_auto_delete (*(bpstat *) arg); |
c906108c SS |
831 | } |
832 | ||
c906108c SS |
833 | |
834 | /* Execute a "stack dummy", a piece of code stored in the stack | |
835 | by the debugger to be executed in the inferior. | |
836 | ||
837 | To call: first, do PUSH_DUMMY_FRAME. | |
838 | Then push the contents of the dummy. It should end with a breakpoint insn. | |
839 | Then call here, passing address at which to start the dummy. | |
840 | ||
841 | The contents of all registers are saved before the dummy frame is popped | |
842 | and copied into the buffer BUFFER. | |
843 | ||
844 | The dummy's frame is automatically popped whenever that break is hit. | |
845 | If that is the first time the program stops, run_stack_dummy | |
846 | returns to its caller with that frame already gone and returns 0. | |
da59e081 JM |
847 | |
848 | Otherwise, run_stack-dummy returns a non-zero value. | |
849 | If the called function receives a random signal, we do not allow the user | |
850 | to continue executing it as this may not work. The dummy frame is poped | |
851 | and we return 1. | |
852 | If we hit a breakpoint, we leave the frame in place and return 2 (the frame | |
853 | will eventually be popped when we do hit the dummy end breakpoint). */ | |
c906108c | 854 | |
c906108c | 855 | int |
fba45db2 | 856 | run_stack_dummy (CORE_ADDR addr, char *buffer) |
c906108c SS |
857 | { |
858 | struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); | |
ed9a39eb | 859 | int saved_async = 0; |
c906108c SS |
860 | |
861 | /* Now proceed, having reached the desired place. */ | |
862 | clear_proceed_status (); | |
96baa820 | 863 | |
7a292a7a SS |
864 | if (CALL_DUMMY_BREAKPOINT_OFFSET_P) |
865 | { | |
866 | struct breakpoint *bpt; | |
867 | struct symtab_and_line sal; | |
c5aa993b JM |
868 | |
869 | INIT_SAL (&sal); /* initialize to zeroes */ | |
7a292a7a SS |
870 | if (CALL_DUMMY_LOCATION == AT_ENTRY_POINT) |
871 | { | |
872 | sal.pc = CALL_DUMMY_ADDRESS (); | |
873 | } | |
874 | else | |
875 | { | |
876 | sal.pc = addr - CALL_DUMMY_START_OFFSET + CALL_DUMMY_BREAKPOINT_OFFSET; | |
877 | } | |
878 | sal.section = find_pc_overlay (sal.pc); | |
c5aa993b | 879 | |
7a292a7a | 880 | /* Set up a FRAME for the dummy frame so we can pass it to |
c5aa993b JM |
881 | set_momentary_breakpoint. We need to give the breakpoint a |
882 | frame in case there is only one copy of the dummy (e.g. | |
883 | CALL_DUMMY_LOCATION == AFTER_TEXT_END). */ | |
7a292a7a SS |
884 | flush_cached_frames (); |
885 | set_current_frame (create_new_frame (read_fp (), sal.pc)); | |
c5aa993b | 886 | |
7a292a7a | 887 | /* If defined, CALL_DUMMY_BREAKPOINT_OFFSET is where we need to put |
c5aa993b JM |
888 | a breakpoint instruction. If not, the call dummy already has the |
889 | breakpoint instruction in it. | |
890 | ||
891 | addr is the address of the call dummy plus the CALL_DUMMY_START_OFFSET, | |
892 | so we need to subtract the CALL_DUMMY_START_OFFSET. */ | |
7a292a7a SS |
893 | bpt = set_momentary_breakpoint (sal, |
894 | get_current_frame (), | |
895 | bp_call_dummy); | |
896 | bpt->disposition = del; | |
c5aa993b | 897 | |
7a292a7a | 898 | /* If all error()s out of proceed ended up calling normal_stop (and |
c5aa993b JM |
899 | perhaps they should; it already does in the special case of error |
900 | out of resume()), then we wouldn't need this. */ | |
7a292a7a SS |
901 | make_cleanup (breakpoint_auto_delete_contents, &stop_bpstat); |
902 | } | |
c906108c SS |
903 | |
904 | disable_watchpoints_before_interactive_call_start (); | |
905 | proceed_to_finish = 1; /* We want stop_registers, please... */ | |
ed9a39eb JM |
906 | |
907 | if (target_can_async_p ()) | |
908 | saved_async = target_async_mask (0); | |
909 | ||
c906108c | 910 | proceed (addr, TARGET_SIGNAL_0, 0); |
ed9a39eb JM |
911 | |
912 | if (saved_async) | |
913 | target_async_mask (saved_async); | |
914 | ||
c906108c SS |
915 | enable_watchpoints_after_interactive_call_stop (); |
916 | ||
917 | discard_cleanups (old_cleanups); | |
918 | ||
242bfc55 | 919 | /* We can stop during an inferior call because a signal is received. */ |
da59e081 | 920 | if (stopped_by_random_signal) |
242bfc55 | 921 | return 1; |
da59e081 JM |
922 | |
923 | /* We may also stop prematurely because we hit a breakpoint in the | |
242bfc55 | 924 | called routine. */ |
c906108c | 925 | if (!stop_stack_dummy) |
da59e081 | 926 | return 2; |
c906108c | 927 | |
da59e081 | 928 | /* On normal return, the stack dummy has been popped already. */ |
c906108c | 929 | |
7a292a7a | 930 | memcpy (buffer, stop_registers, REGISTER_BYTES); |
c906108c SS |
931 | return 0; |
932 | } | |
933 | \f | |
934 | /* Proceed until we reach a different source line with pc greater than | |
935 | our current one or exit the function. We skip calls in both cases. | |
936 | ||
937 | Note that eventually this command should probably be changed so | |
938 | that only source lines are printed out when we hit the breakpoint | |
939 | we set. This may involve changes to wait_for_inferior and the | |
940 | proceed status code. */ | |
941 | ||
942 | /* ARGSUSED */ | |
943 | static void | |
fba45db2 | 944 | until_next_command (int from_tty) |
c906108c SS |
945 | { |
946 | struct frame_info *frame; | |
947 | CORE_ADDR pc; | |
948 | struct symbol *func; | |
949 | struct symtab_and_line sal; | |
c5aa993b | 950 | |
c906108c SS |
951 | clear_proceed_status (); |
952 | ||
953 | frame = get_current_frame (); | |
954 | ||
955 | /* Step until either exited from this function or greater | |
956 | than the current line (if in symbolic section) or pc (if | |
957 | not). */ | |
958 | ||
959 | pc = read_pc (); | |
960 | func = find_pc_function (pc); | |
c5aa993b | 961 | |
c906108c SS |
962 | if (!func) |
963 | { | |
964 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (pc); | |
c5aa993b | 965 | |
c906108c SS |
966 | if (msymbol == NULL) |
967 | error ("Execution is not within a known function."); | |
c5aa993b | 968 | |
c906108c SS |
969 | step_range_start = SYMBOL_VALUE_ADDRESS (msymbol); |
970 | step_range_end = pc; | |
971 | } | |
972 | else | |
973 | { | |
974 | sal = find_pc_line (pc, 0); | |
c5aa993b | 975 | |
c906108c SS |
976 | step_range_start = BLOCK_START (SYMBOL_BLOCK_VALUE (func)); |
977 | step_range_end = sal.end; | |
978 | } | |
c5aa993b | 979 | |
5fbbeb29 | 980 | step_over_calls = STEP_OVER_ALL; |
c906108c SS |
981 | step_frame_address = FRAME_FP (frame); |
982 | step_sp = read_sp (); | |
983 | ||
984 | step_multi = 0; /* Only one call to proceed */ | |
c5aa993b | 985 | |
2acceee2 | 986 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); |
c906108c SS |
987 | } |
988 | ||
c5aa993b | 989 | static void |
fba45db2 | 990 | until_command (char *arg, int from_tty) |
c906108c | 991 | { |
43ff13b4 JM |
992 | int async_exec = 0; |
993 | ||
c906108c SS |
994 | if (!target_has_execution) |
995 | error ("The program is not running."); | |
43ff13b4 JM |
996 | |
997 | /* Find out whether we must run in the background. */ | |
998 | if (arg != NULL) | |
999 | async_exec = strip_bg_char (&arg); | |
1000 | ||
1001 | /* If we must run in the background, but the target can't do it, | |
1002 | error out. */ | |
6426a772 | 1003 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
1004 | error ("Asynchronous execution not supported on this target."); |
1005 | ||
1006 | /* If we are not asked to run in the bg, then prepare to run in the | |
1007 | foreground, synchronously. */ | |
6426a772 | 1008 | if (event_loop_p && !async_exec && target_can_async_p ()) |
c5aa993b | 1009 | { |
43ff13b4 | 1010 | /* Simulate synchronous execution */ |
6426a772 | 1011 | async_disable_stdin (); |
43ff13b4 JM |
1012 | } |
1013 | ||
c906108c SS |
1014 | if (arg) |
1015 | until_break_command (arg, from_tty); | |
1016 | else | |
1017 | until_next_command (from_tty); | |
1018 | } | |
1019 | \f | |
43ff13b4 | 1020 | |
11cf8741 JM |
1021 | /* Print the result of a function at the end of a 'finish' command. */ |
1022 | static void | |
1023 | print_return_value (int structure_return, struct type *value_type) | |
1024 | { | |
1025 | register value_ptr value; | |
8b93c638 JM |
1026 | #ifdef UI_OUT |
1027 | static struct ui_stream *stb = NULL; | |
1028 | #endif /* UI_OUT */ | |
11cf8741 JM |
1029 | |
1030 | if (!structure_return) | |
1031 | { | |
1032 | value = value_being_returned (value_type, stop_registers, structure_return); | |
8b93c638 JM |
1033 | #ifdef UI_OUT |
1034 | stb = ui_out_stream_new (uiout); | |
1035 | ui_out_text (uiout, "Value returned is "); | |
1036 | ui_out_field_fmt (uiout, "gdb-result-var", "$%d", record_latest_value (value)); | |
9549d9c1 | 1037 | ui_out_text (uiout, " = "); |
8b93c638 JM |
1038 | value_print (value, stb->stream, 0, Val_no_prettyprint); |
1039 | ui_out_field_stream (uiout, "return-value", stb); | |
1040 | ui_out_text (uiout, "\n"); | |
1041 | #else /* UI_OUT */ | |
11cf8741 JM |
1042 | printf_filtered ("Value returned is $%d = ", record_latest_value (value)); |
1043 | value_print (value, gdb_stdout, 0, Val_no_prettyprint); | |
1044 | printf_filtered ("\n"); | |
8b93c638 | 1045 | #endif /* UI_OUT */ |
11cf8741 JM |
1046 | } |
1047 | else | |
1048 | { | |
1049 | /* We cannot determine the contents of the structure because | |
1050 | it is on the stack, and we don't know where, since we did not | |
1051 | initiate the call, as opposed to the call_function_by_hand case */ | |
1052 | #ifdef VALUE_RETURNED_FROM_STACK | |
1053 | value = 0; | |
8b93c638 JM |
1054 | #ifdef UI_OUT |
1055 | ui_out_text (uiout, "Value returned has type: "); | |
1056 | ui_out_field_string (uiout, "return-type", TYPE_NAME (value_type)); | |
1057 | ui_out_text (uiout, "."); | |
1058 | ui_out_text (uiout, " Cannot determine contents\n"); | |
1059 | #else /* UI_OUT */ | |
11cf8741 JM |
1060 | printf_filtered ("Value returned has type: %s.", TYPE_NAME (value_type)); |
1061 | printf_filtered (" Cannot determine contents\n"); | |
8b93c638 | 1062 | #endif /* UI_OUT */ |
11cf8741 JM |
1063 | #else |
1064 | value = value_being_returned (value_type, stop_registers, structure_return); | |
8b93c638 JM |
1065 | #ifdef UI_OUT |
1066 | stb = ui_out_stream_new (uiout); | |
1067 | ui_out_text (uiout, "Value returned is "); | |
1068 | ui_out_field_fmt (uiout, "gdb-result-var", "$%d", record_latest_value (value)); | |
28ae27b1 | 1069 | ui_out_text (uiout, " = "); |
8b93c638 JM |
1070 | value_print (value, stb->stream, 0, Val_no_prettyprint); |
1071 | ui_out_field_stream (uiout, "return-value", stb); | |
1072 | ui_out_text (uiout, "\n"); | |
1073 | #else | |
11cf8741 JM |
1074 | printf_filtered ("Value returned is $%d = ", record_latest_value (value)); |
1075 | value_print (value, gdb_stdout, 0, Val_no_prettyprint); | |
1076 | printf_filtered ("\n"); | |
8b93c638 | 1077 | #endif |
11cf8741 JM |
1078 | #endif |
1079 | } | |
1080 | } | |
1081 | ||
43ff13b4 JM |
1082 | /* Stuff that needs to be done by the finish command after the target |
1083 | has stopped. In asynchronous mode, we wait for the target to stop in | |
1084 | the call to poll or select in the event loop, so it is impossible to | |
1085 | do all the stuff as part of the finish_command function itself. The | |
1086 | only chance we have to complete this command is in | |
1087 | fetch_inferior_event, which is called by the event loop as soon as it | |
1088 | detects that the target has stopped. This function is called via the | |
6953f3ba | 1089 | cmd_continuation pointer. */ |
43ff13b4 | 1090 | void |
fba45db2 | 1091 | finish_command_continuation (struct continuation_arg *arg) |
43ff13b4 JM |
1092 | { |
1093 | register struct symbol *function; | |
1094 | struct breakpoint *breakpoint; | |
0d06e24b | 1095 | struct cleanup *cleanups; |
c5aa993b | 1096 | |
57e687d9 MS |
1097 | breakpoint = (struct breakpoint *) arg->data.pointer; |
1098 | function = (struct symbol *) arg->next->data.pointer; | |
1099 | cleanups = (struct cleanup *) arg->next->next->data.pointer; | |
43ff13b4 | 1100 | |
c5aa993b | 1101 | if (bpstat_find_breakpoint (stop_bpstat, breakpoint) != NULL |
43ff13b4 JM |
1102 | && function != 0) |
1103 | { | |
1104 | struct type *value_type; | |
43ff13b4 JM |
1105 | CORE_ADDR funcaddr; |
1106 | int struct_return; | |
1107 | ||
1108 | value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (function)); | |
1109 | if (!value_type) | |
8e65ff28 AC |
1110 | internal_error (__FILE__, __LINE__, |
1111 | "finish_command: function has no target type"); | |
c5aa993b | 1112 | |
43ff13b4 JM |
1113 | if (TYPE_CODE (value_type) == TYPE_CODE_VOID) |
1114 | { | |
0d06e24b | 1115 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
1116 | return; |
1117 | } | |
1118 | ||
1119 | funcaddr = BLOCK_START (SYMBOL_BLOCK_VALUE (function)); | |
1120 | ||
1121 | struct_return = using_struct_return (value_of_variable (function, NULL), | |
c5aa993b JM |
1122 | funcaddr, |
1123 | check_typedef (value_type), | |
11cf8741 | 1124 | BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function))); |
43ff13b4 | 1125 | |
11cf8741 | 1126 | print_return_value (struct_return, value_type); |
43ff13b4 | 1127 | } |
0d06e24b | 1128 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
1129 | } |
1130 | ||
c906108c SS |
1131 | /* "finish": Set a temporary breakpoint at the place |
1132 | the selected frame will return to, then continue. */ | |
1133 | ||
1134 | static void | |
fba45db2 | 1135 | finish_command (char *arg, int from_tty) |
c906108c SS |
1136 | { |
1137 | struct symtab_and_line sal; | |
1138 | register struct frame_info *frame; | |
1139 | register struct symbol *function; | |
1140 | struct breakpoint *breakpoint; | |
1141 | struct cleanup *old_chain; | |
0d06e24b | 1142 | struct continuation_arg *arg1, *arg2, *arg3; |
43ff13b4 JM |
1143 | |
1144 | int async_exec = 0; | |
1145 | ||
1146 | /* Find out whether we must run in the background. */ | |
1147 | if (arg != NULL) | |
1148 | async_exec = strip_bg_char (&arg); | |
1149 | ||
1150 | /* If we must run in the background, but the target can't do it, | |
1151 | error out. */ | |
6426a772 | 1152 | if (event_loop_p && async_exec && !target_can_async_p ()) |
43ff13b4 JM |
1153 | error ("Asynchronous execution not supported on this target."); |
1154 | ||
1155 | /* If we are not asked to run in the bg, then prepare to run in the | |
1156 | foreground, synchronously. */ | |
6426a772 | 1157 | if (event_loop_p && !async_exec && target_can_async_p ()) |
c5aa993b | 1158 | { |
43ff13b4 | 1159 | /* Simulate synchronous execution */ |
6426a772 | 1160 | async_disable_stdin (); |
43ff13b4 | 1161 | } |
c906108c SS |
1162 | |
1163 | if (arg) | |
1164 | error ("The \"finish\" command does not take any arguments."); | |
1165 | if (!target_has_execution) | |
1166 | error ("The program is not running."); | |
1167 | if (selected_frame == NULL) | |
1168 | error ("No selected frame."); | |
1169 | ||
1170 | frame = get_prev_frame (selected_frame); | |
1171 | if (frame == 0) | |
1172 | error ("\"finish\" not meaningful in the outermost frame."); | |
1173 | ||
1174 | clear_proceed_status (); | |
1175 | ||
1176 | sal = find_pc_line (frame->pc, 0); | |
1177 | sal.pc = frame->pc; | |
1178 | ||
1179 | breakpoint = set_momentary_breakpoint (sal, frame, bp_finish); | |
1180 | ||
6426a772 | 1181 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 1182 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 1183 | else |
4d6140d9 | 1184 | old_chain = make_exec_cleanup_delete_breakpoint (breakpoint); |
c906108c SS |
1185 | |
1186 | /* Find the function we will return from. */ | |
1187 | ||
1188 | function = find_pc_function (selected_frame->pc); | |
1189 | ||
1190 | /* Print info on the selected frame, including level number | |
1191 | but not source. */ | |
1192 | if (from_tty) | |
1193 | { | |
1194 | printf_filtered ("Run till exit from "); | |
1195 | print_stack_frame (selected_frame, selected_frame_level, 0); | |
1196 | } | |
1197 | ||
43ff13b4 JM |
1198 | /* If running asynchronously and the target support asynchronous |
1199 | execution, set things up for the rest of the finish command to be | |
1200 | completed later on, when gdb has detected that the target has | |
1201 | stopped, in fetch_inferior_event. */ | |
6426a772 | 1202 | if (event_loop_p && target_can_async_p ()) |
43ff13b4 | 1203 | { |
c5aa993b | 1204 | arg1 = |
43ff13b4 | 1205 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); |
c5aa993b | 1206 | arg2 = |
43ff13b4 | 1207 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); |
0d06e24b JM |
1208 | arg3 = |
1209 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
43ff13b4 | 1210 | arg1->next = arg2; |
0d06e24b JM |
1211 | arg2->next = arg3; |
1212 | arg3->next = NULL; | |
57e687d9 MS |
1213 | arg1->data.pointer = breakpoint; |
1214 | arg2->data.pointer = function; | |
1215 | arg3->data.pointer = old_chain; | |
43ff13b4 JM |
1216 | add_continuation (finish_command_continuation, arg1); |
1217 | } | |
1218 | ||
c5aa993b | 1219 | proceed_to_finish = 1; /* We want stop_registers, please... */ |
2acceee2 | 1220 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); |
c906108c | 1221 | |
43ff13b4 JM |
1222 | /* Do this only if not running asynchronously or if the target |
1223 | cannot do async execution. Otherwise, complete this command when | |
c5aa993b | 1224 | the target actually stops, in fetch_inferior_event. */ |
6426a772 | 1225 | if (!event_loop_p || !target_can_async_p ()) |
c5aa993b JM |
1226 | { |
1227 | ||
1228 | /* Did we stop at our breakpoint? */ | |
1229 | if (bpstat_find_breakpoint (stop_bpstat, breakpoint) != NULL | |
1230 | && function != 0) | |
1231 | { | |
1232 | struct type *value_type; | |
c5aa993b JM |
1233 | CORE_ADDR funcaddr; |
1234 | int struct_return; | |
1235 | ||
1236 | value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (function)); | |
1237 | if (!value_type) | |
8e65ff28 AC |
1238 | internal_error (__FILE__, __LINE__, |
1239 | "finish_command: function has no target type"); | |
c5aa993b JM |
1240 | |
1241 | /* FIXME: Shouldn't we do the cleanups before returning? */ | |
1242 | if (TYPE_CODE (value_type) == TYPE_CODE_VOID) | |
1243 | return; | |
1244 | ||
1245 | funcaddr = BLOCK_START (SYMBOL_BLOCK_VALUE (function)); | |
1246 | ||
1247 | struct_return = | |
1248 | using_struct_return (value_of_variable (function, NULL), | |
1249 | funcaddr, | |
1250 | check_typedef (value_type), | |
1251 | BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function))); | |
1252 | ||
11cf8741 | 1253 | print_return_value (struct_return, value_type); |
c5aa993b JM |
1254 | } |
1255 | do_cleanups (old_chain); | |
1256 | } | |
c906108c SS |
1257 | } |
1258 | \f | |
1259 | /* ARGSUSED */ | |
1260 | static void | |
fba45db2 | 1261 | program_info (char *args, int from_tty) |
c906108c SS |
1262 | { |
1263 | bpstat bs = stop_bpstat; | |
1264 | int num = bpstat_num (&bs); | |
c5aa993b | 1265 | |
c906108c SS |
1266 | if (!target_has_execution) |
1267 | { | |
1268 | printf_filtered ("The program being debugged is not being run.\n"); | |
1269 | return; | |
1270 | } | |
1271 | ||
1272 | target_files_info (); | |
1273 | printf_filtered ("Program stopped at %s.\n", | |
c5aa993b | 1274 | local_hex_string ((unsigned long) stop_pc)); |
c906108c SS |
1275 | if (stop_step) |
1276 | printf_filtered ("It stopped after being stepped.\n"); | |
1277 | else if (num != 0) | |
1278 | { | |
1279 | /* There may be several breakpoints in the same place, so this | |
c5aa993b | 1280 | isn't as strange as it seems. */ |
c906108c SS |
1281 | while (num != 0) |
1282 | { | |
1283 | if (num < 0) | |
1284 | { | |
1285 | printf_filtered ("It stopped at a breakpoint that has "); | |
1286 | printf_filtered ("since been deleted.\n"); | |
1287 | } | |
1288 | else | |
1289 | printf_filtered ("It stopped at breakpoint %d.\n", num); | |
1290 | num = bpstat_num (&bs); | |
1291 | } | |
1292 | } | |
1293 | else if (stop_signal != TARGET_SIGNAL_0) | |
1294 | { | |
1295 | printf_filtered ("It stopped with signal %s, %s.\n", | |
1296 | target_signal_to_name (stop_signal), | |
1297 | target_signal_to_string (stop_signal)); | |
1298 | } | |
1299 | ||
1300 | if (!from_tty) | |
1301 | { | |
1302 | printf_filtered ("Type \"info stack\" or \"info registers\" "); | |
1303 | printf_filtered ("for more information.\n"); | |
1304 | } | |
1305 | } | |
1306 | \f | |
1307 | static void | |
fba45db2 | 1308 | environment_info (char *var, int from_tty) |
c906108c SS |
1309 | { |
1310 | if (var) | |
1311 | { | |
1312 | register char *val = get_in_environ (inferior_environ, var); | |
1313 | if (val) | |
1314 | { | |
1315 | puts_filtered (var); | |
1316 | puts_filtered (" = "); | |
1317 | puts_filtered (val); | |
1318 | puts_filtered ("\n"); | |
1319 | } | |
1320 | else | |
1321 | { | |
1322 | puts_filtered ("Environment variable \""); | |
1323 | puts_filtered (var); | |
1324 | puts_filtered ("\" not defined.\n"); | |
1325 | } | |
1326 | } | |
1327 | else | |
1328 | { | |
1329 | register char **vector = environ_vector (inferior_environ); | |
1330 | while (*vector) | |
1331 | { | |
1332 | puts_filtered (*vector++); | |
1333 | puts_filtered ("\n"); | |
1334 | } | |
1335 | } | |
1336 | } | |
1337 | ||
1338 | static void | |
fba45db2 | 1339 | set_environment_command (char *arg, int from_tty) |
c906108c SS |
1340 | { |
1341 | register char *p, *val, *var; | |
1342 | int nullset = 0; | |
1343 | ||
1344 | if (arg == 0) | |
1345 | error_no_arg ("environment variable and value"); | |
1346 | ||
1347 | /* Find seperation between variable name and value */ | |
1348 | p = (char *) strchr (arg, '='); | |
1349 | val = (char *) strchr (arg, ' '); | |
1350 | ||
1351 | if (p != 0 && val != 0) | |
1352 | { | |
1353 | /* We have both a space and an equals. If the space is before the | |
c5aa993b JM |
1354 | equals, walk forward over the spaces til we see a nonspace |
1355 | (possibly the equals). */ | |
c906108c SS |
1356 | if (p > val) |
1357 | while (*val == ' ') | |
1358 | val++; | |
1359 | ||
1360 | /* Now if the = is after the char following the spaces, | |
c5aa993b | 1361 | take the char following the spaces. */ |
c906108c SS |
1362 | if (p > val) |
1363 | p = val - 1; | |
1364 | } | |
1365 | else if (val != 0 && p == 0) | |
1366 | p = val; | |
1367 | ||
1368 | if (p == arg) | |
1369 | error_no_arg ("environment variable to set"); | |
1370 | ||
1371 | if (p == 0 || p[1] == 0) | |
1372 | { | |
1373 | nullset = 1; | |
1374 | if (p == 0) | |
1375 | p = arg + strlen (arg); /* So that savestring below will work */ | |
1376 | } | |
1377 | else | |
1378 | { | |
1379 | /* Not setting variable value to null */ | |
1380 | val = p + 1; | |
1381 | while (*val == ' ' || *val == '\t') | |
1382 | val++; | |
1383 | } | |
1384 | ||
c5aa993b JM |
1385 | while (p != arg && (p[-1] == ' ' || p[-1] == '\t')) |
1386 | p--; | |
c906108c SS |
1387 | |
1388 | var = savestring (arg, p - arg); | |
1389 | if (nullset) | |
1390 | { | |
1391 | printf_filtered ("Setting environment variable "); | |
1392 | printf_filtered ("\"%s\" to null value.\n", var); | |
1393 | set_in_environ (inferior_environ, var, ""); | |
1394 | } | |
1395 | else | |
1396 | set_in_environ (inferior_environ, var, val); | |
b8c9b27d | 1397 | xfree (var); |
c906108c SS |
1398 | } |
1399 | ||
1400 | static void | |
fba45db2 | 1401 | unset_environment_command (char *var, int from_tty) |
c906108c SS |
1402 | { |
1403 | if (var == 0) | |
1404 | { | |
1405 | /* If there is no argument, delete all environment variables. | |
c5aa993b | 1406 | Ask for confirmation if reading from the terminal. */ |
c906108c SS |
1407 | if (!from_tty || query ("Delete all environment variables? ")) |
1408 | { | |
1409 | free_environ (inferior_environ); | |
1410 | inferior_environ = make_environ (); | |
1411 | } | |
1412 | } | |
1413 | else | |
1414 | unset_in_environ (inferior_environ, var); | |
1415 | } | |
1416 | ||
1417 | /* Handle the execution path (PATH variable) */ | |
1418 | ||
1419 | static const char path_var_name[] = "PATH"; | |
1420 | ||
1421 | /* ARGSUSED */ | |
1422 | static void | |
fba45db2 | 1423 | path_info (char *args, int from_tty) |
c906108c SS |
1424 | { |
1425 | puts_filtered ("Executable and object file path: "); | |
1426 | puts_filtered (get_in_environ (inferior_environ, path_var_name)); | |
1427 | puts_filtered ("\n"); | |
1428 | } | |
1429 | ||
1430 | /* Add zero or more directories to the front of the execution path. */ | |
1431 | ||
1432 | static void | |
fba45db2 | 1433 | path_command (char *dirname, int from_tty) |
c906108c SS |
1434 | { |
1435 | char *exec_path; | |
1436 | char *env; | |
1437 | dont_repeat (); | |
1438 | env = get_in_environ (inferior_environ, path_var_name); | |
1439 | /* Can be null if path is not set */ | |
1440 | if (!env) | |
1441 | env = ""; | |
4fcf66da | 1442 | exec_path = xstrdup (env); |
c906108c SS |
1443 | mod_path (dirname, &exec_path); |
1444 | set_in_environ (inferior_environ, path_var_name, exec_path); | |
b8c9b27d | 1445 | xfree (exec_path); |
c906108c | 1446 | if (from_tty) |
c5aa993b | 1447 | path_info ((char *) NULL, from_tty); |
c906108c | 1448 | } |
c906108c | 1449 | \f |
c5aa993b | 1450 | |
c906108c SS |
1451 | #ifdef REGISTER_NAMES |
1452 | char *gdb_register_names[] = REGISTER_NAMES; | |
1453 | #endif | |
1454 | /* Print out the machine register regnum. If regnum is -1, | |
1455 | print all registers (fpregs == 1) or all non-float registers | |
1456 | (fpregs == 0). | |
1457 | ||
1458 | For most machines, having all_registers_info() print the | |
1459 | register(s) one per line is good enough. If a different format | |
1460 | is required, (eg, for MIPS or Pyramid 90x, which both have | |
1461 | lots of regs), or there is an existing convention for showing | |
1462 | all the registers, define the macro DO_REGISTERS_INFO(regnum, fp) | |
c5aa993b | 1463 | to provide that format. */ |
c906108c | 1464 | |
666e11c5 | 1465 | void |
fba45db2 | 1466 | do_registers_info (int regnum, int fpregs) |
c906108c SS |
1467 | { |
1468 | register int i; | |
64485362 | 1469 | int numregs = NUM_REGS + NUM_PSEUDO_REGS; |
b8adfa9f MS |
1470 | char *raw_buffer = (char*) alloca (MAX_REGISTER_RAW_SIZE); |
1471 | char *virtual_buffer = (char*) alloca (MAX_REGISTER_VIRTUAL_SIZE); | |
c906108c SS |
1472 | |
1473 | for (i = 0; i < numregs; i++) | |
1474 | { | |
c906108c | 1475 | /* Decide between printing all regs, nonfloat regs, or specific reg. */ |
c5aa993b JM |
1476 | if (regnum == -1) |
1477 | { | |
1478 | if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT && !fpregs) | |
1479 | continue; | |
1480 | } | |
1481 | else | |
1482 | { | |
1483 | if (i != regnum) | |
1484 | continue; | |
1485 | } | |
c906108c SS |
1486 | |
1487 | /* If the register name is empty, it is undefined for this | |
c5aa993b | 1488 | processor, so don't display anything. */ |
c906108c SS |
1489 | if (REGISTER_NAME (i) == NULL || *(REGISTER_NAME (i)) == '\0') |
1490 | continue; | |
1491 | ||
1492 | fputs_filtered (REGISTER_NAME (i), gdb_stdout); | |
1493 | print_spaces_filtered (15 - strlen (REGISTER_NAME (i)), gdb_stdout); | |
1494 | ||
1495 | /* Get the data in raw format. */ | |
1496 | if (read_relative_register_raw_bytes (i, raw_buffer)) | |
1497 | { | |
1498 | printf_filtered ("*value not available*\n"); | |
1499 | continue; | |
1500 | } | |
1501 | ||
1502 | /* Convert raw data to virtual format if necessary. */ | |
c906108c SS |
1503 | if (REGISTER_CONVERTIBLE (i)) |
1504 | { | |
1505 | REGISTER_CONVERT_TO_VIRTUAL (i, REGISTER_VIRTUAL_TYPE (i), | |
1506 | raw_buffer, virtual_buffer); | |
1507 | } | |
1508 | else | |
392a587b JM |
1509 | { |
1510 | memcpy (virtual_buffer, raw_buffer, | |
1511 | REGISTER_VIRTUAL_SIZE (i)); | |
1512 | } | |
c906108c SS |
1513 | |
1514 | /* If virtual format is floating, print it that way, and in raw hex. */ | |
1515 | if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT) | |
1516 | { | |
1517 | register int j; | |
1518 | ||
1519 | #ifdef INVALID_FLOAT | |
1520 | if (INVALID_FLOAT (virtual_buffer, REGISTER_VIRTUAL_SIZE (i))) | |
1521 | printf_filtered ("<invalid float>"); | |
1522 | else | |
1523 | #endif | |
1524 | val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0, | |
1525 | gdb_stdout, 0, 1, 0, Val_pretty_default); | |
1526 | ||
1527 | printf_filtered ("\t(raw 0x"); | |
1528 | for (j = 0; j < REGISTER_RAW_SIZE (i); j++) | |
1529 | { | |
1530 | register int idx = TARGET_BYTE_ORDER == BIG_ENDIAN ? j | |
c5aa993b JM |
1531 | : REGISTER_RAW_SIZE (i) - 1 - j; |
1532 | printf_filtered ("%02x", (unsigned char) raw_buffer[idx]); | |
c906108c SS |
1533 | } |
1534 | printf_filtered (")"); | |
1535 | } | |
1536 | ||
1537 | /* FIXME! val_print probably can handle all of these cases now... */ | |
1538 | ||
1539 | /* Else if virtual format is too long for printf, | |
c5aa993b | 1540 | print in hex a byte at a time. */ |
c906108c SS |
1541 | else if (REGISTER_VIRTUAL_SIZE (i) > (int) sizeof (long)) |
1542 | { | |
1543 | register int j; | |
1544 | printf_filtered ("0x"); | |
1545 | for (j = 0; j < REGISTER_VIRTUAL_SIZE (i); j++) | |
c5aa993b | 1546 | printf_filtered ("%02x", (unsigned char) virtual_buffer[j]); |
c906108c SS |
1547 | } |
1548 | /* Else print as integer in hex and in decimal. */ | |
1549 | else | |
1550 | { | |
1551 | val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0, | |
1552 | gdb_stdout, 'x', 1, 0, Val_pretty_default); | |
1553 | printf_filtered ("\t"); | |
1554 | val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0, | |
c5aa993b | 1555 | gdb_stdout, 0, 1, 0, Val_pretty_default); |
c906108c SS |
1556 | } |
1557 | ||
1558 | /* The SPARC wants to print even-numbered float regs as doubles | |
c5aa993b | 1559 | in addition to printing them as floats. */ |
c906108c SS |
1560 | #ifdef PRINT_REGISTER_HOOK |
1561 | PRINT_REGISTER_HOOK (i); | |
1562 | #endif | |
1563 | ||
1564 | printf_filtered ("\n"); | |
1565 | } | |
1566 | } | |
c906108c | 1567 | |
c906108c | 1568 | void |
fba45db2 | 1569 | registers_info (char *addr_exp, int fpregs) |
c906108c SS |
1570 | { |
1571 | int regnum, numregs; | |
1572 | register char *end; | |
1573 | ||
1574 | if (!target_has_registers) | |
1575 | error ("The program has no registers now."); | |
1576 | if (selected_frame == NULL) | |
1577 | error ("No selected frame."); | |
1578 | ||
1579 | if (!addr_exp) | |
1580 | { | |
c5aa993b | 1581 | DO_REGISTERS_INFO (-1, fpregs); |
c906108c SS |
1582 | return; |
1583 | } | |
1584 | ||
1585 | do | |
c5aa993b | 1586 | { |
c906108c SS |
1587 | if (addr_exp[0] == '$') |
1588 | addr_exp++; | |
1589 | end = addr_exp; | |
1590 | while (*end != '\0' && *end != ' ' && *end != '\t') | |
1591 | ++end; | |
64485362 | 1592 | numregs = NUM_REGS + NUM_PSEUDO_REGS; |
c906108c SS |
1593 | |
1594 | regnum = target_map_name_to_register (addr_exp, end - addr_exp); | |
c5aa993b | 1595 | if (regnum >= 0) |
c906108c SS |
1596 | goto found; |
1597 | ||
1598 | regnum = numregs; | |
1599 | ||
1600 | if (*addr_exp >= '0' && *addr_exp <= '9') | |
c5aa993b JM |
1601 | regnum = atoi (addr_exp); /* Take a number */ |
1602 | if (regnum >= numregs) /* Bad name, or bad number */ | |
c906108c SS |
1603 | error ("%.*s: invalid register", end - addr_exp, addr_exp); |
1604 | ||
c5aa993b JM |
1605 | found: |
1606 | DO_REGISTERS_INFO (regnum, fpregs); | |
c906108c SS |
1607 | |
1608 | addr_exp = end; | |
1609 | while (*addr_exp == ' ' || *addr_exp == '\t') | |
1610 | ++addr_exp; | |
c5aa993b JM |
1611 | } |
1612 | while (*addr_exp != '\0'); | |
c906108c SS |
1613 | } |
1614 | ||
1615 | void | |
fba45db2 | 1616 | all_registers_info (char *addr_exp, int from_tty) |
c906108c SS |
1617 | { |
1618 | registers_info (addr_exp, 1); | |
1619 | } | |
1620 | ||
1621 | void | |
fba45db2 | 1622 | nofp_registers_info (char *addr_exp, int from_tty) |
c906108c SS |
1623 | { |
1624 | registers_info (addr_exp, 0); | |
1625 | } | |
c906108c | 1626 | \f |
c5aa993b | 1627 | |
c906108c SS |
1628 | /* |
1629 | * TODO: | |
1630 | * Should save/restore the tty state since it might be that the | |
1631 | * program to be debugged was started on this tty and it wants | |
1632 | * the tty in some state other than what we want. If it's running | |
1633 | * on another terminal or without a terminal, then saving and | |
1634 | * restoring the tty state is a harmless no-op. | |
1635 | * This only needs to be done if we are attaching to a process. | |
1636 | */ | |
1637 | ||
1638 | /* | |
1639 | attach_command -- | |
1640 | takes a program started up outside of gdb and ``attaches'' to it. | |
1641 | This stops it cold in its tracks and allows us to start debugging it. | |
1642 | and wait for the trace-trap that results from attaching. */ | |
1643 | ||
1644 | void | |
fba45db2 | 1645 | attach_command (char *args, int from_tty) |
c906108c SS |
1646 | { |
1647 | #ifdef SOLIB_ADD | |
1648 | extern int auto_solib_add; | |
1649 | #endif | |
1650 | ||
c5aa993b JM |
1651 | char *exec_file; |
1652 | char *full_exec_path = NULL; | |
c906108c | 1653 | |
c5aa993b | 1654 | dont_repeat (); /* Not for the faint of heart */ |
c906108c SS |
1655 | |
1656 | if (target_has_execution) | |
1657 | { | |
1658 | if (query ("A program is being debugged already. Kill it? ")) | |
1659 | target_kill (); | |
1660 | else | |
1661 | error ("Not killed."); | |
1662 | } | |
1663 | ||
1664 | target_attach (args, from_tty); | |
1665 | ||
1666 | /* Set up the "saved terminal modes" of the inferior | |
1667 | based on what modes we are starting it with. */ | |
1668 | target_terminal_init (); | |
1669 | ||
1670 | /* Install inferior's terminal modes. */ | |
1671 | target_terminal_inferior (); | |
1672 | ||
1673 | /* Set up execution context to know that we should return from | |
1674 | wait_for_inferior as soon as the target reports a stop. */ | |
1675 | init_wait_for_inferior (); | |
1676 | clear_proceed_status (); | |
c906108c SS |
1677 | |
1678 | /* No traps are generated when attaching to inferior under Mach 3 | |
1679 | or GNU hurd. */ | |
1680 | #ifndef ATTACH_NO_WAIT | |
00373e55 | 1681 | stop_soon_quietly = 1; |
c906108c SS |
1682 | wait_for_inferior (); |
1683 | #endif | |
1684 | ||
1685 | /* | |
1686 | * If no exec file is yet known, try to determine it from the | |
1687 | * process itself. | |
1688 | */ | |
1689 | exec_file = (char *) get_exec_file (0); | |
c5aa993b JM |
1690 | if (!exec_file) |
1691 | { | |
39f77062 | 1692 | exec_file = target_pid_to_exec_file (PIDGET (inferior_ptid)); |
c5aa993b JM |
1693 | if (exec_file) |
1694 | { | |
1695 | /* It's possible we don't have a full path, but rather just a | |
1696 | filename. Some targets, such as HP-UX, don't provide the | |
1697 | full path, sigh. | |
1698 | ||
1699 | Attempt to qualify the filename against the source path. | |
1700 | (If that fails, we'll just fall back on the original | |
1701 | filename. Not much more we can do...) | |
1702 | */ | |
1703 | if (!source_full_path_of (exec_file, &full_exec_path)) | |
1704 | full_exec_path = savestring (exec_file, strlen (exec_file)); | |
1705 | ||
1706 | exec_file_attach (full_exec_path, from_tty); | |
1adeb98a | 1707 | symbol_file_add_main (full_exec_path, from_tty); |
c5aa993b | 1708 | } |
c906108c | 1709 | } |
c906108c SS |
1710 | |
1711 | #ifdef SOLIB_ADD | |
1712 | if (auto_solib_add) | |
1713 | { | |
1714 | /* Add shared library symbols from the newly attached process, if any. */ | |
c5aa993b | 1715 | SOLIB_ADD ((char *) 0, from_tty, ¤t_target); |
c906108c SS |
1716 | re_enable_breakpoints_in_shlibs (); |
1717 | } | |
1718 | #endif | |
1719 | ||
1720 | /* Take any necessary post-attaching actions for this platform. | |
c5aa993b | 1721 | */ |
39f77062 | 1722 | target_post_attach (PIDGET (inferior_ptid)); |
c906108c SS |
1723 | |
1724 | normal_stop (); | |
6426a772 JM |
1725 | |
1726 | if (attach_hook) | |
1727 | attach_hook (); | |
c906108c SS |
1728 | } |
1729 | ||
1730 | /* | |
1731 | * detach_command -- | |
1732 | * takes a program previously attached to and detaches it. | |
1733 | * The program resumes execution and will no longer stop | |
1734 | * on signals, etc. We better not have left any breakpoints | |
1735 | * in the program or it'll die when it hits one. For this | |
1736 | * to work, it may be necessary for the process to have been | |
1737 | * previously attached. It *might* work if the program was | |
1738 | * started via the normal ptrace (PTRACE_TRACEME). | |
1739 | */ | |
1740 | ||
1741 | static void | |
fba45db2 | 1742 | detach_command (char *args, int from_tty) |
c906108c | 1743 | { |
c5aa993b | 1744 | dont_repeat (); /* Not for the faint of heart */ |
c906108c SS |
1745 | target_detach (args, from_tty); |
1746 | #if defined(SOLIB_RESTART) | |
1747 | SOLIB_RESTART (); | |
1748 | #endif | |
6426a772 JM |
1749 | if (detach_hook) |
1750 | detach_hook (); | |
c906108c SS |
1751 | } |
1752 | ||
43ff13b4 JM |
1753 | /* Stop the execution of the target while running in async mode, in |
1754 | the backgound. */ | |
8b93c638 JM |
1755 | #ifdef UI_OUT |
1756 | void | |
fba45db2 | 1757 | interrupt_target_command_wrapper (char *args, int from_tty) |
8b93c638 JM |
1758 | { |
1759 | interrupt_target_command (args, from_tty); | |
1760 | } | |
1761 | #endif | |
43ff13b4 | 1762 | static void |
fba45db2 | 1763 | interrupt_target_command (char *args, int from_tty) |
43ff13b4 | 1764 | { |
6426a772 | 1765 | if (event_loop_p && target_can_async_p ()) |
43ff13b4 | 1766 | { |
c5aa993b | 1767 | dont_repeat (); /* Not for the faint of heart */ |
43ff13b4 JM |
1768 | target_stop (); |
1769 | } | |
1770 | } | |
1771 | ||
c906108c SS |
1772 | /* ARGSUSED */ |
1773 | static void | |
fba45db2 | 1774 | float_info (char *addr_exp, int from_tty) |
c906108c SS |
1775 | { |
1776 | #ifdef FLOAT_INFO | |
1777 | FLOAT_INFO; | |
1778 | #else | |
1779 | printf_filtered ("No floating point info available for this processor.\n"); | |
1780 | #endif | |
1781 | } | |
1782 | \f | |
1783 | /* ARGSUSED */ | |
1784 | static void | |
fba45db2 | 1785 | unset_command (char *args, int from_tty) |
c906108c SS |
1786 | { |
1787 | printf_filtered ("\"unset\" must be followed by the name of "); | |
1788 | printf_filtered ("an unset subcommand.\n"); | |
1789 | help_list (unsetlist, "unset ", -1, gdb_stdout); | |
1790 | } | |
1791 | ||
1792 | void | |
fba45db2 | 1793 | _initialize_infcmd (void) |
c906108c SS |
1794 | { |
1795 | struct cmd_list_element *c; | |
c5aa993b | 1796 | |
fa58ee11 EZ |
1797 | c= add_com ("tty", class_run, tty_command, |
1798 | "Set terminal for future runs of program being debugged."); | |
1799 | c->completer = filename_completer; | |
c906108c | 1800 | |
fa58ee11 EZ |
1801 | c = add_set_cmd ("args", class_run, var_string_noescape, |
1802 | (char *) &inferior_args, | |
1803 | "Set argument list to give program being debugged when it is started.\n\ | |
c906108c | 1804 | Follow this command with any number of args, to be passed to the program.", |
fa58ee11 EZ |
1805 | &setlist); |
1806 | add_show_from_set (c, &showlist); | |
1807 | c->completer = filename_completer; | |
c906108c SS |
1808 | |
1809 | c = add_cmd | |
1810 | ("environment", no_class, environment_info, | |
1811 | "The environment to give the program, or one variable's value.\n\ | |
1812 | With an argument VAR, prints the value of environment variable VAR to\n\ | |
1813 | give the program being debugged. With no arguments, prints the entire\n\ | |
1814 | environment to be given to the program.", &showlist); | |
1815 | c->completer = noop_completer; | |
1816 | ||
1817 | add_prefix_cmd ("unset", no_class, unset_command, | |
1818 | "Complement to certain \"set\" commands", | |
1819 | &unsetlist, "unset ", 0, &cmdlist); | |
c5aa993b | 1820 | |
c906108c | 1821 | c = add_cmd ("environment", class_run, unset_environment_command, |
c5aa993b | 1822 | "Cancel environment variable VAR for the program.\n\ |
c906108c | 1823 | This does not affect the program until the next \"run\" command.", |
c5aa993b | 1824 | &unsetlist); |
c906108c SS |
1825 | c->completer = noop_completer; |
1826 | ||
1827 | c = add_cmd ("environment", class_run, set_environment_command, | |
1828 | "Set environment variable value to give the program.\n\ | |
1829 | Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\ | |
1830 | VALUES of environment variables are uninterpreted strings.\n\ | |
1831 | This does not affect the program until the next \"run\" command.", | |
c5aa993b | 1832 | &setlist); |
c906108c | 1833 | c->completer = noop_completer; |
c5aa993b | 1834 | |
fa58ee11 EZ |
1835 | c = add_com ("path", class_files, path_command, |
1836 | "Add directory DIR(s) to beginning of search path for object files.\n\ | |
c906108c SS |
1837 | $cwd in the path means the current working directory.\n\ |
1838 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
1839 | directories, separated by colons. These directories are searched to find\n\ | |
1840 | fully linked executable files and separately compiled object files as needed."); | |
fa58ee11 | 1841 | c->completer = filename_completer; |
c906108c SS |
1842 | |
1843 | c = add_cmd ("paths", no_class, path_info, | |
c5aa993b | 1844 | "Current search path for finding object files.\n\ |
c906108c SS |
1845 | $cwd in the path means the current working directory.\n\ |
1846 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
1847 | directories, separated by colons. These directories are searched to find\n\ | |
1848 | fully linked executable files and separately compiled object files as needed.", | |
1849 | &showlist); | |
1850 | c->completer = noop_completer; | |
1851 | ||
c5aa993b JM |
1852 | add_com ("attach", class_run, attach_command, |
1853 | "Attach to a process or file outside of GDB.\n\ | |
c906108c SS |
1854 | This command attaches to another target, of the same type as your last\n\ |
1855 | \"target\" command (\"info files\" will show your target stack).\n\ | |
1856 | The command may take as argument a process id or a device file.\n\ | |
1857 | For a process id, you must have permission to send the process a signal,\n\ | |
1858 | and it must have the same effective uid as the debugger.\n\ | |
1859 | When using \"attach\" with a process id, the debugger finds the\n\ | |
1860 | program running in the process, looking first in the current working\n\ | |
1861 | directory, or (if not found there) using the source file search path\n\ | |
1862 | (see the \"directory\" command). You can also use the \"file\" command\n\ | |
1863 | to specify the program, and to load its symbol table."); | |
1864 | ||
1865 | add_com ("detach", class_run, detach_command, | |
1866 | "Detach a process or file previously attached.\n\ | |
1867 | If a process, it is no longer traced, and it continues its execution. If\n\ | |
1868 | you were debugging a file, the file is closed and gdb no longer accesses it."); | |
1869 | ||
1870 | add_com ("signal", class_run, signal_command, | |
1871 | "Continue program giving it signal specified by the argument.\n\ | |
1872 | An argument of \"0\" means continue program without giving it a signal."); | |
1873 | ||
1874 | add_com ("stepi", class_run, stepi_command, | |
1875 | "Step one instruction exactly.\n\ | |
1876 | Argument N means do this N times (or till program stops for another reason)."); | |
1877 | add_com_alias ("si", "stepi", class_alias, 0); | |
1878 | ||
1879 | add_com ("nexti", class_run, nexti_command, | |
1880 | "Step one instruction, but proceed through subroutine calls.\n\ | |
1881 | Argument N means do this N times (or till program stops for another reason)."); | |
1882 | add_com_alias ("ni", "nexti", class_alias, 0); | |
1883 | ||
1884 | add_com ("finish", class_run, finish_command, | |
1885 | "Execute until selected stack frame returns.\n\ | |
1886 | Upon return, the value returned is printed and put in the value history."); | |
1887 | ||
1888 | add_com ("next", class_run, next_command, | |
1889 | "Step program, proceeding through subroutine calls.\n\ | |
1890 | Like the \"step\" command as long as subroutine calls do not happen;\n\ | |
1891 | when they do, the call is treated as one instruction.\n\ | |
1892 | Argument N means do this N times (or till program stops for another reason)."); | |
1893 | add_com_alias ("n", "next", class_run, 1); | |
1894 | if (xdb_commands) | |
c5aa993b | 1895 | add_com_alias ("S", "next", class_run, 1); |
c906108c SS |
1896 | |
1897 | add_com ("step", class_run, step_command, | |
1898 | "Step program until it reaches a different source line.\n\ | |
1899 | Argument N means do this N times (or till program stops for another reason)."); | |
1900 | add_com_alias ("s", "step", class_run, 1); | |
1901 | ||
1902 | add_com ("until", class_run, until_command, | |
c5aa993b | 1903 | "Execute until the program reaches a source line greater than the current\n\ |
c906108c SS |
1904 | or a specified line or address or function (same args as break command).\n\ |
1905 | Execution will also stop upon exit from the current stack frame."); | |
1906 | add_com_alias ("u", "until", class_run, 1); | |
c5aa993b | 1907 | |
c906108c SS |
1908 | add_com ("jump", class_run, jump_command, |
1909 | "Continue program being debugged at specified line or address.\n\ | |
1910 | Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\ | |
1911 | for an address to start at."); | |
1912 | ||
b83266a0 SS |
1913 | if (xdb_commands) |
1914 | add_com ("go", class_run, go_command, | |
1915 | "Usage: go <location>\n\ | |
c906108c SS |
1916 | Continue program being debugged, stopping at specified line or \n\ |
1917 | address.\n\ | |
1918 | Give as argument either LINENUM or *ADDR, where ADDR is an \n\ | |
1919 | expression for an address to start at.\n\ | |
1920 | This command is a combination of tbreak and jump."); | |
b83266a0 | 1921 | |
c906108c | 1922 | if (xdb_commands) |
c5aa993b | 1923 | add_com_alias ("g", "go", class_run, 1); |
c906108c SS |
1924 | |
1925 | add_com ("continue", class_run, continue_command, | |
1926 | "Continue program being debugged, after signal or breakpoint.\n\ | |
1927 | If proceeding from breakpoint, a number N may be used as an argument,\n\ | |
1928 | which means to set the ignore count of that breakpoint to N - 1 (so that\n\ | |
1929 | the breakpoint won't break until the Nth time it is reached)."); | |
1930 | add_com_alias ("c", "cont", class_run, 1); | |
1931 | add_com_alias ("fg", "cont", class_run, 1); | |
1932 | ||
fa58ee11 | 1933 | c = add_com ("run", class_run, run_command, |
c906108c SS |
1934 | "Start debugged program. You may specify arguments to give it.\n\ |
1935 | Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\ | |
1936 | Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\ | |
1937 | With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\ | |
1938 | To cancel previous arguments and run with no arguments,\n\ | |
1939 | use \"set args\" without arguments."); | |
fa58ee11 | 1940 | c->completer = filename_completer; |
c906108c SS |
1941 | add_com_alias ("r", "run", class_run, 1); |
1942 | if (xdb_commands) | |
1943 | add_com ("R", class_run, run_no_args_command, | |
c5aa993b | 1944 | "Start debugged program with no arguments."); |
c906108c | 1945 | |
43ff13b4 JM |
1946 | add_com ("interrupt", class_run, interrupt_target_command, |
1947 | "Interrupt the execution of the debugged program."); | |
1948 | ||
c906108c | 1949 | add_info ("registers", nofp_registers_info, |
c5aa993b | 1950 | "List of integer registers and their contents, for selected stack frame.\n\ |
c906108c | 1951 | Register name as argument means describe only that register."); |
7194c49b | 1952 | add_info_alias ("r", "registers", 1); |
c906108c SS |
1953 | |
1954 | if (xdb_commands) | |
c5aa993b JM |
1955 | add_com ("lr", class_info, nofp_registers_info, |
1956 | "List of integer registers and their contents, for selected stack frame.\n\ | |
c906108c SS |
1957 | Register name as argument means describe only that register."); |
1958 | add_info ("all-registers", all_registers_info, | |
c5aa993b | 1959 | "List of all registers and their contents, for selected stack frame.\n\ |
c906108c SS |
1960 | Register name as argument means describe only that register."); |
1961 | ||
1962 | add_info ("program", program_info, | |
1963 | "Execution status of the program."); | |
1964 | ||
1965 | add_info ("float", float_info, | |
1966 | "Print the status of the floating point unit\n"); | |
1967 | ||
07091751 | 1968 | set_inferior_args (xstrdup ("")); /* Initially no args */ |
c906108c SS |
1969 | inferior_environ = make_environ (); |
1970 | init_environ (inferior_environ); | |
1971 | } |