Commit | Line | Data |
---|---|---|
ee0613d1 JG |
1 | /* Memory-access and commands for "inferior" (child) process, for GDB. |
2 | Copyright 1986, 1987, 1988, 1989, 1991, 1992 Free Software Foundation, Inc. | |
bd5635a1 RP |
3 | |
4 | This file is part of GDB. | |
5 | ||
ee0613d1 | 6 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 7 | it under the terms of the GNU General Public License as published by |
ee0613d1 JG |
8 | the Free Software Foundation; either version 2 of the License, or |
9 | (at your option) any later version. | |
bd5635a1 | 10 | |
ee0613d1 | 11 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
ee0613d1 JG |
17 | along with this program; if not, write to the Free Software |
18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
bd5635a1 | 19 | |
1304f099 | 20 | #include "defs.h" |
bd5635a1 RP |
21 | #include <signal.h> |
22 | #include <sys/param.h> | |
23 | #include <string.h> | |
bd5635a1 | 24 | #include "symtab.h" |
1304f099 | 25 | #include "gdbtypes.h" |
bd5635a1 RP |
26 | #include "frame.h" |
27 | #include "inferior.h" | |
28 | #include "environ.h" | |
29 | #include "value.h" | |
30 | #include "gdbcmd.h" | |
31 | #include "gdbcore.h" | |
32 | #include "target.h" | |
33 | ||
1304f099 JG |
34 | static void |
35 | continue_command PARAMS ((char *, int)); | |
36 | ||
37 | static void | |
38 | until_next_command PARAMS ((int)); | |
39 | ||
40 | static void | |
41 | until_command PARAMS ((char *, int)); | |
42 | ||
43 | static void | |
44 | path_info PARAMS ((char *, int)); | |
45 | ||
46 | static void | |
47 | path_command PARAMS ((char *, int)); | |
48 | ||
49 | static void | |
50 | unset_command PARAMS ((char *, int)); | |
51 | ||
52 | static void | |
53 | float_info PARAMS ((char *, int)); | |
54 | ||
55 | static void | |
56 | detach_command PARAMS ((char *, int)); | |
57 | ||
58 | static void | |
59 | nofp_registers_info PARAMS ((char *, int)); | |
60 | ||
61 | static void | |
62 | all_registers_info PARAMS ((char *, int)); | |
63 | ||
64 | static void | |
65 | registers_info PARAMS ((char *, int)); | |
66 | ||
67 | static void | |
68 | do_registers_info PARAMS ((int, int)); | |
69 | ||
70 | static void | |
71 | unset_environment_command PARAMS ((char *, int)); | |
72 | ||
73 | static void | |
74 | set_environment_command PARAMS ((char *, int)); | |
75 | ||
76 | static void | |
77 | environment_info PARAMS ((char *, int)); | |
78 | ||
79 | static void | |
80 | program_info PARAMS ((char *, int)); | |
81 | ||
82 | static void | |
83 | finish_command PARAMS ((char *, int)); | |
84 | ||
85 | static void | |
86 | signal_command PARAMS ((char *, int)); | |
87 | ||
88 | static void | |
89 | jump_command PARAMS ((char *, int)); | |
90 | ||
91 | static void | |
92 | step_1 PARAMS ((int, int, char *)); | |
93 | ||
94 | static void | |
95 | nexti_command PARAMS ((char *, int)); | |
bd5635a1 | 96 | |
1304f099 JG |
97 | static void |
98 | stepi_command PARAMS ((char *, int)); | |
99 | ||
100 | static void | |
101 | next_command PARAMS ((char *, int)); | |
102 | ||
103 | static void | |
104 | step_command PARAMS ((char *, int)); | |
105 | ||
106 | static void | |
107 | run_command PARAMS ((char *, int)); | |
bd5635a1 RP |
108 | |
109 | #define ERROR_NO_INFERIOR \ | |
110 | if (!target_has_execution) error ("The program is not being run."); | |
111 | ||
112 | /* String containing arguments to give to the program, separated by spaces. | |
113 | Empty string (pointer to '\0') means no args. */ | |
114 | ||
115 | static char *inferior_args; | |
116 | ||
117 | /* File name for default use for standard in/out in the inferior. */ | |
118 | ||
119 | char *inferior_io_terminal; | |
120 | ||
121 | /* Pid of our debugged inferior, or 0 if no inferior now. | |
122 | Since various parts of infrun.c test this to see whether there is a program | |
123 | being debugged it should be nonzero (currently 3 is used) for remote | |
124 | debugging. */ | |
125 | ||
126 | int inferior_pid; | |
127 | ||
128 | /* Last signal that the inferior received (why it stopped). */ | |
129 | ||
130 | int stop_signal; | |
131 | ||
132 | /* Address at which inferior stopped. */ | |
133 | ||
134 | CORE_ADDR stop_pc; | |
135 | ||
136 | /* Stack frame when program stopped. */ | |
137 | ||
138 | FRAME_ADDR stop_frame_address; | |
139 | ||
140 | /* Chain containing status of breakpoint(s) that we have stopped at. */ | |
141 | ||
142 | bpstat stop_bpstat; | |
143 | ||
144 | /* Flag indicating that a command has proceeded the inferior past the | |
145 | current breakpoint. */ | |
146 | ||
147 | int breakpoint_proceeded; | |
148 | ||
149 | /* Nonzero if stopped due to a step command. */ | |
150 | ||
151 | int stop_step; | |
152 | ||
153 | /* Nonzero if stopped due to completion of a stack dummy routine. */ | |
154 | ||
155 | int stop_stack_dummy; | |
156 | ||
157 | /* Nonzero if stopped due to a random (unexpected) signal in inferior | |
158 | process. */ | |
159 | ||
160 | int stopped_by_random_signal; | |
161 | ||
162 | /* Range to single step within. | |
163 | If this is nonzero, respond to a single-step signal | |
164 | by continuing to step if the pc is in this range. */ | |
165 | ||
166 | CORE_ADDR step_range_start; /* Inclusive */ | |
167 | CORE_ADDR step_range_end; /* Exclusive */ | |
168 | ||
169 | /* Stack frame address as of when stepping command was issued. | |
170 | This is how we know when we step into a subroutine call, | |
171 | and how to set the frame for the breakpoint used to step out. */ | |
172 | ||
173 | FRAME_ADDR step_frame_address; | |
174 | ||
175 | /* 1 means step over all subroutine calls. | |
b5a3d2aa | 176 | 0 means don't step over calls (used by stepi). |
bd5635a1 RP |
177 | -1 means step over calls to undebuggable functions. */ |
178 | ||
179 | int step_over_calls; | |
180 | ||
181 | /* If stepping, nonzero means step count is > 1 | |
182 | so don't print frame next time inferior stops | |
183 | if it stops due to stepping. */ | |
184 | ||
185 | int step_multi; | |
186 | ||
187 | /* Environment to use for running inferior, | |
188 | in format described in environ.h. */ | |
189 | ||
190 | struct environ *inferior_environ; | |
191 | ||
bd5635a1 | 192 | \f |
e1ce8aa5 | 193 | /* ARGSUSED */ |
bd5635a1 RP |
194 | void |
195 | tty_command (file, from_tty) | |
196 | char *file; | |
197 | int from_tty; | |
198 | { | |
199 | if (file == 0) | |
200 | error_no_arg ("terminal name for running target process"); | |
201 | ||
202 | inferior_io_terminal = savestring (file, strlen (file)); | |
203 | } | |
204 | ||
205 | static void | |
206 | run_command (args, from_tty) | |
207 | char *args; | |
208 | int from_tty; | |
209 | { | |
210 | char *exec_file; | |
211 | ||
212 | dont_repeat (); | |
213 | ||
214 | if (inferior_pid) | |
215 | { | |
216 | if ( | |
217 | !query ("The program being debugged has been started already.\n\ | |
218 | Start it from the beginning? ")) | |
219 | error ("Program not restarted."); | |
ee0613d1 | 220 | target_kill (); |
bd5635a1 RP |
221 | } |
222 | ||
223 | exec_file = (char *) get_exec_file (0); | |
224 | ||
1304f099 | 225 | /* The exec file is re-read every time we do a generic_mourn_inferior, so |
bd5635a1 RP |
226 | we just have to worry about the symbol file. */ |
227 | reread_symbols (); | |
228 | ||
229 | if (args) | |
230 | { | |
231 | char *cmd; | |
ee0613d1 | 232 | cmd = concat ("set args ", args, NULL); |
bd5635a1 RP |
233 | make_cleanup (free, cmd); |
234 | execute_command (cmd, from_tty); | |
235 | } | |
236 | ||
237 | if (from_tty) | |
238 | { | |
b5a3d2aa SG |
239 | puts_filtered("Starting program: "); |
240 | if (exec_file) | |
241 | puts_filtered(exec_file); | |
242 | puts_filtered(" "); | |
243 | puts_filtered(inferior_args); | |
244 | puts_filtered("\n"); | |
bd5635a1 RP |
245 | fflush (stdout); |
246 | } | |
247 | ||
248 | target_create_inferior (exec_file, inferior_args, | |
249 | environ_vector (inferior_environ)); | |
250 | } | |
251 | \f | |
1304f099 | 252 | static void |
bd5635a1 RP |
253 | continue_command (proc_count_exp, from_tty) |
254 | char *proc_count_exp; | |
255 | int from_tty; | |
256 | { | |
257 | ERROR_NO_INFERIOR; | |
258 | ||
259 | /* If have argument, set proceed count of breakpoint we stopped at. */ | |
260 | ||
261 | if (proc_count_exp != NULL) | |
262 | { | |
263 | bpstat bs = stop_bpstat; | |
264 | int num = bpstat_num (&bs); | |
265 | if (num == 0 && from_tty) | |
266 | { | |
267 | printf_filtered | |
268 | ("Not stopped at any breakpoint; argument ignored.\n"); | |
269 | } | |
270 | while (num != 0) | |
271 | { | |
272 | set_ignore_count (num, | |
273 | parse_and_eval_address (proc_count_exp) - 1, | |
274 | from_tty); | |
275 | /* set_ignore_count prints a message ending with a period. | |
276 | So print two spaces before "Continuing.". */ | |
277 | if (from_tty) | |
1304f099 | 278 | printf_filtered (" "); |
bd5635a1 RP |
279 | num = bpstat_num (&bs); |
280 | } | |
281 | } | |
282 | ||
283 | if (from_tty) | |
1304f099 | 284 | printf_filtered ("Continuing.\n"); |
bd5635a1 RP |
285 | |
286 | clear_proceed_status (); | |
287 | ||
288 | proceed ((CORE_ADDR) -1, -1, 0); | |
289 | } | |
290 | \f | |
291 | /* Step until outside of current statement. */ | |
bd5635a1 | 292 | |
e1ce8aa5 | 293 | /* ARGSUSED */ |
bd5635a1 RP |
294 | static void |
295 | step_command (count_string, from_tty) | |
1304f099 | 296 | char *count_string; |
bd5635a1 RP |
297 | int from_tty; |
298 | { | |
299 | step_1 (0, 0, count_string); | |
300 | } | |
301 | ||
302 | /* Likewise, but skip over subroutine calls as if single instructions. */ | |
303 | ||
e1ce8aa5 | 304 | /* ARGSUSED */ |
bd5635a1 RP |
305 | static void |
306 | next_command (count_string, from_tty) | |
1304f099 | 307 | char *count_string; |
bd5635a1 RP |
308 | int from_tty; |
309 | { | |
310 | step_1 (1, 0, count_string); | |
311 | } | |
312 | ||
313 | /* Likewise, but step only one instruction. */ | |
314 | ||
e1ce8aa5 | 315 | /* ARGSUSED */ |
bd5635a1 RP |
316 | static void |
317 | stepi_command (count_string, from_tty) | |
1304f099 | 318 | char *count_string; |
bd5635a1 RP |
319 | int from_tty; |
320 | { | |
321 | step_1 (0, 1, count_string); | |
322 | } | |
323 | ||
e1ce8aa5 | 324 | /* ARGSUSED */ |
bd5635a1 RP |
325 | static void |
326 | nexti_command (count_string, from_tty) | |
1304f099 | 327 | char *count_string; |
bd5635a1 RP |
328 | int from_tty; |
329 | { | |
330 | step_1 (1, 1, count_string); | |
331 | } | |
332 | ||
333 | static void | |
334 | step_1 (skip_subroutines, single_inst, count_string) | |
335 | int skip_subroutines; | |
336 | int single_inst; | |
337 | char *count_string; | |
338 | { | |
339 | register int count = 1; | |
340 | FRAME fr; | |
1304f099 | 341 | struct cleanup *cleanups = 0; |
bd5635a1 RP |
342 | |
343 | ERROR_NO_INFERIOR; | |
344 | count = count_string ? parse_and_eval_address (count_string) : 1; | |
345 | ||
1304f099 JG |
346 | if (!single_inst || skip_subroutines) /* leave si command alone */ |
347 | { | |
348 | enable_longjmp_breakpoint(); | |
349 | cleanups = make_cleanup(disable_longjmp_breakpoint, 0); | |
350 | } | |
351 | ||
bd5635a1 RP |
352 | for (; count > 0; count--) |
353 | { | |
354 | clear_proceed_status (); | |
355 | ||
bd5635a1 RP |
356 | fr = get_current_frame (); |
357 | if (!fr) /* Avoid coredump here. Why tho? */ | |
358 | error ("No current frame"); | |
359 | step_frame_address = FRAME_FP (fr); | |
360 | ||
361 | if (! single_inst) | |
362 | { | |
363 | find_pc_line_pc_range (stop_pc, &step_range_start, &step_range_end); | |
364 | if (step_range_end == 0) | |
365 | { | |
1304f099 | 366 | struct minimal_symbol *msymbol; |
bd5635a1 | 367 | |
993583e5 JK |
368 | /* FIXME: This should be using containing_function_bounds or a |
369 | cleaned-up version thereof, to deal with things like the | |
370 | end of the text segment. */ | |
b1b4a89e | 371 | |
1304f099 | 372 | msymbol = lookup_minimal_symbol_by_pc (stop_pc); |
bd5635a1 | 373 | target_terminal_ours (); |
1304f099 | 374 | printf_filtered ("Current function has no line number information.\n"); |
bd5635a1 RP |
375 | fflush (stdout); |
376 | ||
2e4964ad | 377 | if (msymbol == NULL || SYMBOL_NAME (msymbol + 1) == NULL) |
993583e5 JK |
378 | { |
379 | /* If sigtramp is in the u area, check for it. */ | |
380 | #if defined SIGTRAMP_START | |
381 | if (IN_SIGTRAMP (stop_pc, (char *)NULL)) | |
382 | { | |
383 | step_range_start = SIGTRAMP_START; | |
384 | step_range_end = SIGTRAMP_END; | |
385 | } | |
386 | else | |
387 | #endif | |
388 | error ("Cannot find bounds of current function."); | |
389 | } | |
390 | else | |
391 | { | |
392 | step_range_start = SYMBOL_VALUE_ADDRESS (msymbol); | |
393 | step_range_end = SYMBOL_VALUE_ADDRESS (msymbol + 1); | |
394 | } | |
bd5635a1 | 395 | |
1304f099 | 396 | printf_filtered ("Single stepping until function exit.\n"); |
bd5635a1 | 397 | fflush (stdout); |
bd5635a1 RP |
398 | } |
399 | } | |
400 | else | |
401 | { | |
402 | /* Say we are stepping, but stop after one insn whatever it does. | |
403 | Don't step through subroutine calls even to undebuggable | |
404 | functions. */ | |
405 | step_range_start = step_range_end = 1; | |
406 | if (!skip_subroutines) | |
407 | step_over_calls = 0; | |
408 | } | |
409 | ||
410 | if (skip_subroutines) | |
411 | step_over_calls = 1; | |
412 | ||
413 | step_multi = (count > 1); | |
414 | proceed ((CORE_ADDR) -1, -1, 1); | |
415 | if (! stop_step) | |
416 | break; | |
417 | #if defined (SHIFT_INST_REGS) | |
418 | write_register (NNPC_REGNUM, read_register (NPC_REGNUM)); | |
419 | write_register (NPC_REGNUM, read_register (PC_REGNUM)); | |
420 | #endif | |
421 | } | |
1304f099 JG |
422 | |
423 | if (!single_inst || skip_subroutines) | |
424 | do_cleanups(cleanups); | |
bd5635a1 RP |
425 | } |
426 | \f | |
427 | /* Continue program at specified address. */ | |
428 | ||
429 | static void | |
430 | jump_command (arg, from_tty) | |
431 | char *arg; | |
432 | int from_tty; | |
433 | { | |
434 | register CORE_ADDR addr; | |
435 | struct symtabs_and_lines sals; | |
436 | struct symtab_and_line sal; | |
b4fde6fa FF |
437 | struct symbol *fn; |
438 | struct symbol *sfn; | |
bd5635a1 RP |
439 | |
440 | ERROR_NO_INFERIOR; | |
441 | ||
442 | if (!arg) | |
443 | error_no_arg ("starting address"); | |
444 | ||
445 | sals = decode_line_spec_1 (arg, 1); | |
446 | if (sals.nelts != 1) | |
447 | { | |
448 | error ("Unreasonable jump request"); | |
449 | } | |
450 | ||
451 | sal = sals.sals[0]; | |
1304f099 | 452 | free ((PTR)sals.sals); |
bd5635a1 RP |
453 | |
454 | if (sal.symtab == 0 && sal.pc == 0) | |
455 | error ("No source file has been specified."); | |
456 | ||
ee0613d1 | 457 | resolve_sal_pc (&sal); /* May error out */ |
bd5635a1 | 458 | |
b4fde6fa FF |
459 | /* See if we are trying to jump to another function. */ |
460 | fn = get_frame_function (get_current_frame ()); | |
461 | sfn = find_pc_function (sal.pc); | |
462 | if (fn != NULL && sfn != fn) | |
463 | { | |
2e4964ad FF |
464 | if (!query ("Line %d is not in `%s'. Jump anyway? ", sal.line, |
465 | SYMBOL_SOURCE_NAME (fn))) | |
b4fde6fa FF |
466 | { |
467 | error ("Not confirmed."); | |
468 | /* NOTREACHED */ | |
469 | } | |
b4fde6fa | 470 | } |
bd5635a1 | 471 | |
bd5635a1 RP |
472 | addr = ADDR_BITS_SET (sal.pc); |
473 | ||
474 | if (from_tty) | |
1304f099 | 475 | printf_filtered ("Continuing at %s.\n", local_hex_string(addr)); |
bd5635a1 RP |
476 | |
477 | clear_proceed_status (); | |
478 | proceed (addr, 0, 0); | |
479 | } | |
480 | ||
481 | /* Continue program giving it specified signal. */ | |
482 | ||
483 | static void | |
484 | signal_command (signum_exp, from_tty) | |
485 | char *signum_exp; | |
486 | int from_tty; | |
487 | { | |
488 | register int signum; | |
489 | ||
490 | dont_repeat (); /* Too dangerous. */ | |
491 | ERROR_NO_INFERIOR; | |
492 | ||
493 | if (!signum_exp) | |
494 | error_no_arg ("signal number"); | |
495 | ||
de6a2704 JK |
496 | /* It would be even slicker to make signal names be valid expressions, |
497 | (the type could be "enum $signal" or some such), then the user could | |
498 | assign them to convenience variables. */ | |
499 | signum = strtosigno (signum_exp); | |
500 | ||
501 | if (signum == 0) | |
502 | /* Not found as a name, try it as an expression. */ | |
503 | signum = parse_and_eval_address (signum_exp); | |
bd5635a1 RP |
504 | |
505 | if (from_tty) | |
de6a2704 JK |
506 | { |
507 | char *signame = strsigno (signum); | |
508 | printf_filtered ("Continuing with signal "); | |
509 | if (signame == NULL || signum == 0) | |
510 | printf_filtered ("%d.\n", signum); | |
511 | else | |
512 | /* Do we need to print the number as well as the name? */ | |
513 | printf_filtered ("%s (%d).\n", signame, signum); | |
514 | } | |
bd5635a1 RP |
515 | |
516 | clear_proceed_status (); | |
517 | proceed (stop_pc, signum, 0); | |
518 | } | |
519 | ||
520 | /* Execute a "stack dummy", a piece of code stored in the stack | |
521 | by the debugger to be executed in the inferior. | |
522 | ||
523 | To call: first, do PUSH_DUMMY_FRAME. | |
524 | Then push the contents of the dummy. It should end with a breakpoint insn. | |
525 | Then call here, passing address at which to start the dummy. | |
526 | ||
527 | The contents of all registers are saved before the dummy frame is popped | |
528 | and copied into the buffer BUFFER. | |
529 | ||
530 | The dummy's frame is automatically popped whenever that break is hit. | |
531 | If that is the first time the program stops, run_stack_dummy | |
532 | returns to its caller with that frame already gone. | |
54023465 JK |
533 | Otherwise, the caller never gets returned to. |
534 | ||
535 | NAME is a string to print to identify the function which we are calling. | |
536 | It is not guaranteed to be the name of a function, it could be something | |
537 | like "at 0x4370" if a name can't be found for the function. */ | |
bd5635a1 | 538 | |
ee0613d1 | 539 | /* DEBUG HOOK: 4 => return instead of letting the stack dummy run. */ |
bd5635a1 RP |
540 | |
541 | static int stack_dummy_testing = 0; | |
542 | ||
543 | void | |
54023465 JK |
544 | run_stack_dummy (name, addr, buffer) |
545 | char *name; | |
bd5635a1 RP |
546 | CORE_ADDR addr; |
547 | char buffer[REGISTER_BYTES]; | |
548 | { | |
549 | /* Now proceed, having reached the desired place. */ | |
550 | clear_proceed_status (); | |
551 | if (stack_dummy_testing & 4) | |
552 | { | |
553 | POP_FRAME; | |
554 | return; | |
555 | } | |
556 | proceed_to_finish = 1; /* We want stop_registers, please... */ | |
557 | proceed (addr, 0, 0); | |
558 | ||
559 | if (!stop_stack_dummy) | |
560 | /* This used to say | |
54023465 JK |
561 | "The expression which contained the function call has been discarded." |
562 | It is a hard concept to explain in a few words. Ideally, GDB would | |
563 | be able to resume evaluation of the expression when the function | |
564 | finally is done executing. Perhaps someday this will be implemented | |
565 | (it would not be easy). */ | |
bd5635a1 RP |
566 | error ("\ |
567 | The program being debugged stopped while in a function called from GDB.\n\ | |
54023465 JK |
568 | When the function (%s) is done executing, GDB will silently\n\ |
569 | stop (instead of continuing to evaluate the expression containing\n\ | |
570 | the function call).", name); | |
bd5635a1 RP |
571 | |
572 | /* On return, the stack dummy has been popped already. */ | |
573 | ||
4ed3a9ea | 574 | memcpy (buffer, stop_registers, sizeof stop_registers); |
bd5635a1 RP |
575 | } |
576 | \f | |
577 | /* Proceed until we reach a different source line with pc greater than | |
578 | our current one or exit the function. We skip calls in both cases. | |
579 | ||
580 | Note that eventually this command should probably be changed so | |
581 | that only source lines are printed out when we hit the breakpoint | |
582 | we set. I'm going to postpone this until after a hopeful rewrite | |
583 | of wait_for_inferior and the proceed status code. -- randy */ | |
584 | ||
e1ce8aa5 | 585 | /* ARGSUSED */ |
1304f099 | 586 | static void |
bd5635a1 RP |
587 | until_next_command (from_tty) |
588 | int from_tty; | |
589 | { | |
590 | FRAME frame; | |
591 | CORE_ADDR pc; | |
592 | struct symbol *func; | |
593 | struct symtab_and_line sal; | |
594 | ||
595 | clear_proceed_status (); | |
596 | ||
597 | frame = get_current_frame (); | |
598 | ||
599 | /* Step until either exited from this function or greater | |
600 | than the current line (if in symbolic section) or pc (if | |
601 | not). */ | |
602 | ||
603 | pc = read_pc (); | |
604 | func = find_pc_function (pc); | |
605 | ||
606 | if (!func) | |
607 | { | |
1304f099 | 608 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (pc); |
bd5635a1 | 609 | |
1304f099 | 610 | if (msymbol == NULL) |
bd5635a1 RP |
611 | error ("Execution is not within a known function."); |
612 | ||
2e4964ad | 613 | step_range_start = SYMBOL_VALUE_ADDRESS (msymbol); |
bd5635a1 RP |
614 | step_range_end = pc; |
615 | } | |
616 | else | |
617 | { | |
618 | sal = find_pc_line (pc, 0); | |
619 | ||
620 | step_range_start = BLOCK_START (SYMBOL_BLOCK_VALUE (func)); | |
621 | step_range_end = sal.end; | |
622 | } | |
623 | ||
624 | step_over_calls = 1; | |
625 | step_frame_address = FRAME_FP (frame); | |
626 | ||
627 | step_multi = 0; /* Only one call to proceed */ | |
628 | ||
629 | proceed ((CORE_ADDR) -1, -1, 1); | |
630 | } | |
631 | ||
1304f099 | 632 | static void |
bd5635a1 RP |
633 | until_command (arg, from_tty) |
634 | char *arg; | |
635 | int from_tty; | |
636 | { | |
637 | if (!target_has_execution) | |
638 | error ("The program is not running."); | |
639 | if (arg) | |
640 | until_break_command (arg, from_tty); | |
641 | else | |
642 | until_next_command (from_tty); | |
643 | } | |
644 | \f | |
645 | /* "finish": Set a temporary breakpoint at the place | |
646 | the selected frame will return to, then continue. */ | |
647 | ||
648 | static void | |
649 | finish_command (arg, from_tty) | |
650 | char *arg; | |
651 | int from_tty; | |
652 | { | |
653 | struct symtab_and_line sal; | |
654 | register FRAME frame; | |
655 | struct frame_info *fi; | |
656 | register struct symbol *function; | |
1304f099 JG |
657 | struct breakpoint *breakpoint; |
658 | struct cleanup *old_chain; | |
bd5635a1 RP |
659 | |
660 | if (arg) | |
661 | error ("The \"finish\" command does not take any arguments."); | |
662 | if (!target_has_execution) | |
663 | error ("The program is not running."); | |
777bef06 JK |
664 | if (selected_frame == NULL) |
665 | error ("No selected frame."); | |
bd5635a1 RP |
666 | |
667 | frame = get_prev_frame (selected_frame); | |
668 | if (frame == 0) | |
669 | error ("\"finish\" not meaningful in the outermost frame."); | |
670 | ||
671 | clear_proceed_status (); | |
672 | ||
673 | fi = get_frame_info (frame); | |
674 | sal = find_pc_line (fi->pc, 0); | |
675 | sal.pc = fi->pc; | |
1304f099 JG |
676 | |
677 | breakpoint = set_momentary_breakpoint (sal, frame, bp_finish); | |
678 | ||
679 | old_chain = make_cleanup(delete_breakpoint, breakpoint); | |
bd5635a1 RP |
680 | |
681 | /* Find the function we will return from. */ | |
682 | ||
683 | fi = get_frame_info (selected_frame); | |
684 | function = find_pc_function (fi->pc); | |
685 | ||
ee0613d1 JG |
686 | /* Print info on the selected frame, including level number |
687 | but not source. */ | |
bd5635a1 RP |
688 | if (from_tty) |
689 | { | |
ee0613d1 JG |
690 | printf_filtered ("Run till exit from "); |
691 | print_stack_frame (selected_frame, selected_frame_level, 0); | |
bd5635a1 RP |
692 | } |
693 | ||
694 | proceed_to_finish = 1; /* We want stop_registers, please... */ | |
695 | proceed ((CORE_ADDR) -1, -1, 0); | |
696 | ||
1304f099 JG |
697 | /* Did we stop at our breakpoint? */ |
698 | if (bpstat_find_breakpoint(stop_bpstat, breakpoint) != NULL | |
699 | && function != 0) | |
bd5635a1 RP |
700 | { |
701 | struct type *value_type; | |
702 | register value val; | |
703 | CORE_ADDR funcaddr; | |
704 | ||
705 | value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (function)); | |
706 | if (!value_type) | |
707 | fatal ("internal: finish_command: function has no target type"); | |
708 | ||
709 | if (TYPE_CODE (value_type) == TYPE_CODE_VOID) | |
710 | return; | |
711 | ||
712 | funcaddr = BLOCK_START (SYMBOL_BLOCK_VALUE (function)); | |
713 | ||
714 | val = value_being_returned (value_type, stop_registers, | |
715 | using_struct_return (value_of_variable (function), | |
716 | funcaddr, | |
717 | value_type, | |
718 | BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function)))); | |
719 | ||
ee0613d1 | 720 | printf_filtered ("Value returned is $%d = ", record_latest_value (val)); |
bd5635a1 | 721 | value_print (val, stdout, 0, Val_no_prettyprint); |
ee0613d1 | 722 | printf_filtered ("\n"); |
bd5635a1 | 723 | } |
1304f099 | 724 | do_cleanups(old_chain); |
bd5635a1 RP |
725 | } |
726 | \f | |
e1ce8aa5 | 727 | /* ARGSUSED */ |
bd5635a1 RP |
728 | static void |
729 | program_info (args, from_tty) | |
730 | char *args; | |
731 | int from_tty; | |
732 | { | |
733 | bpstat bs = stop_bpstat; | |
734 | int num = bpstat_num (&bs); | |
735 | ||
736 | if (!target_has_execution) | |
737 | { | |
1304f099 | 738 | printf_filtered ("The program being debugged is not being run.\n"); |
bd5635a1 RP |
739 | return; |
740 | } | |
741 | ||
742 | target_files_info (); | |
1304f099 | 743 | printf_filtered ("Program stopped at %s.\n", local_hex_string(stop_pc)); |
bd5635a1 | 744 | if (stop_step) |
1304f099 | 745 | printf_filtered ("It stopped after being stepped.\n"); |
bd5635a1 RP |
746 | else if (num != 0) |
747 | { | |
748 | /* There may be several breakpoints in the same place, so this | |
749 | isn't as strange as it seems. */ | |
750 | while (num != 0) | |
751 | { | |
752 | if (num < 0) | |
1304f099 | 753 | printf_filtered ("It stopped at a breakpoint that has since been deleted.\n"); |
bd5635a1 | 754 | else |
1304f099 | 755 | printf_filtered ("It stopped at breakpoint %d.\n", num); |
bd5635a1 RP |
756 | num = bpstat_num (&bs); |
757 | } | |
758 | } | |
de6a2704 JK |
759 | else if (stop_signal) |
760 | { | |
bd5635a1 | 761 | #ifdef PRINT_RANDOM_SIGNAL |
de6a2704 | 762 | PRINT_RANDOM_SIGNAL (stop_signal); |
bd5635a1 | 763 | #else |
de6a2704 JK |
764 | char *signame = strsigno (stop_signal); |
765 | printf_filtered ("It stopped with signal "); | |
766 | if (signame == NULL) | |
767 | printf_filtered ("%d", stop_signal); | |
768 | else | |
769 | /* Do we need to print the number as well as the name? */ | |
770 | printf_filtered ("%s (%d)", signame, stop_signal); | |
771 | printf_filtered (", %s.\n", safe_strsignal (stop_signal)); | |
bd5635a1 RP |
772 | #endif |
773 | } | |
774 | ||
775 | if (!from_tty) | |
1304f099 | 776 | printf_filtered ("Type \"info stack\" or \"info registers\" for more information.\n"); |
bd5635a1 RP |
777 | } |
778 | \f | |
779 | static void | |
1304f099 | 780 | environment_info (var, from_tty) |
bd5635a1 | 781 | char *var; |
1304f099 | 782 | int from_tty; |
bd5635a1 RP |
783 | { |
784 | if (var) | |
785 | { | |
786 | register char *val = get_in_environ (inferior_environ, var); | |
787 | if (val) | |
631f7a9f JG |
788 | { |
789 | puts_filtered (var); | |
790 | puts_filtered (" = "); | |
791 | puts_filtered (val); | |
792 | puts_filtered ("\n"); | |
793 | } | |
bd5635a1 | 794 | else |
631f7a9f JG |
795 | { |
796 | puts_filtered ("Environment variable \""); | |
797 | puts_filtered (var); | |
798 | puts_filtered ("\" not defined.\n"); | |
799 | } | |
bd5635a1 RP |
800 | } |
801 | else | |
802 | { | |
803 | register char **vector = environ_vector (inferior_environ); | |
804 | while (*vector) | |
631f7a9f JG |
805 | { |
806 | puts_filtered (*vector++); | |
807 | puts_filtered ("\n"); | |
808 | } | |
bd5635a1 RP |
809 | } |
810 | } | |
811 | ||
812 | static void | |
1304f099 | 813 | set_environment_command (arg, from_tty) |
bd5635a1 | 814 | char *arg; |
1304f099 | 815 | int from_tty; |
bd5635a1 RP |
816 | { |
817 | register char *p, *val, *var; | |
818 | int nullset = 0; | |
819 | ||
820 | if (arg == 0) | |
821 | error_no_arg ("environment variable and value"); | |
822 | ||
823 | /* Find seperation between variable name and value */ | |
824 | p = (char *) strchr (arg, '='); | |
825 | val = (char *) strchr (arg, ' '); | |
826 | ||
827 | if (p != 0 && val != 0) | |
828 | { | |
829 | /* We have both a space and an equals. If the space is before the | |
631f7a9f JG |
830 | equals, walk forward over the spaces til we see a nonspace |
831 | (possibly the equals). */ | |
bd5635a1 RP |
832 | if (p > val) |
833 | while (*val == ' ') | |
834 | val++; | |
835 | ||
631f7a9f JG |
836 | /* Now if the = is after the char following the spaces, |
837 | take the char following the spaces. */ | |
838 | if (p > val) | |
b5a3d2aa | 839 | p = val - 1; |
bd5635a1 RP |
840 | } |
841 | else if (val != 0 && p == 0) | |
842 | p = val; | |
843 | ||
844 | if (p == arg) | |
845 | error_no_arg ("environment variable to set"); | |
846 | ||
847 | if (p == 0 || p[1] == 0) | |
848 | { | |
849 | nullset = 1; | |
850 | if (p == 0) | |
851 | p = arg + strlen (arg); /* So that savestring below will work */ | |
852 | } | |
853 | else | |
854 | { | |
855 | /* Not setting variable value to null */ | |
856 | val = p + 1; | |
857 | while (*val == ' ' || *val == '\t') | |
858 | val++; | |
859 | } | |
860 | ||
861 | while (p != arg && (p[-1] == ' ' || p[-1] == '\t')) p--; | |
862 | ||
863 | var = savestring (arg, p - arg); | |
864 | if (nullset) | |
865 | { | |
1304f099 | 866 | printf_filtered ("Setting environment variable \"%s\" to null value.\n", var); |
bd5635a1 RP |
867 | set_in_environ (inferior_environ, var, ""); |
868 | } | |
869 | else | |
870 | set_in_environ (inferior_environ, var, val); | |
871 | free (var); | |
872 | } | |
873 | ||
874 | static void | |
875 | unset_environment_command (var, from_tty) | |
876 | char *var; | |
877 | int from_tty; | |
878 | { | |
879 | if (var == 0) | |
880 | { | |
881 | /* If there is no argument, delete all environment variables. | |
882 | Ask for confirmation if reading from the terminal. */ | |
883 | if (!from_tty || query ("Delete all environment variables? ")) | |
884 | { | |
885 | free_environ (inferior_environ); | |
886 | inferior_environ = make_environ (); | |
887 | } | |
888 | } | |
889 | else | |
890 | unset_in_environ (inferior_environ, var); | |
891 | } | |
892 | ||
893 | /* Handle the execution path (PATH variable) */ | |
894 | ||
a8a69e63 | 895 | static const char path_var_name[] = "PATH"; |
bd5635a1 | 896 | |
e1ce8aa5 | 897 | /* ARGSUSED */ |
1304f099 | 898 | static void |
bd5635a1 RP |
899 | path_info (args, from_tty) |
900 | char *args; | |
901 | int from_tty; | |
902 | { | |
b5a3d2aa SG |
903 | puts_filtered ("Executable and object file path: "); |
904 | puts_filtered (get_in_environ (inferior_environ, path_var_name)); | |
905 | puts_filtered ("\n"); | |
bd5635a1 RP |
906 | } |
907 | ||
908 | /* Add zero or more directories to the front of the execution path. */ | |
909 | ||
1304f099 | 910 | static void |
bd5635a1 RP |
911 | path_command (dirname, from_tty) |
912 | char *dirname; | |
913 | int from_tty; | |
914 | { | |
915 | char *exec_path; | |
916 | ||
917 | dont_repeat (); | |
918 | exec_path = strsave (get_in_environ (inferior_environ, path_var_name)); | |
e1ce8aa5 | 919 | mod_path (dirname, &exec_path); |
bd5635a1 RP |
920 | set_in_environ (inferior_environ, path_var_name, exec_path); |
921 | free (exec_path); | |
922 | if (from_tty) | |
e1ce8aa5 | 923 | path_info ((char *)NULL, from_tty); |
bd5635a1 RP |
924 | } |
925 | \f | |
de6a2704 JK |
926 | /* This routine is getting awfully cluttered with #if's. It's probably |
927 | time to turn this into READ_PC and define it in the tm.h file. | |
928 | Ditto for write_pc. */ | |
b1b4a89e | 929 | |
bd5635a1 RP |
930 | CORE_ADDR |
931 | read_pc () | |
932 | { | |
b1b4a89e | 933 | #ifdef GDB_TARGET_IS_HPPA |
b5c10493 SG |
934 | int flags = read_register(FLAGS_REGNUM); |
935 | ||
936 | if (flags & 2) | |
b1b4a89e JK |
937 | return read_register(31) & ~0x3; /* User PC is here when in sys call */ |
938 | return read_register (PC_REGNUM) & ~0x3; | |
939 | #else | |
de6a2704 JK |
940 | #ifdef TARGET_READ_PC |
941 | return TARGET_READ_PC (); | |
b1b4a89e | 942 | #else |
bd5635a1 | 943 | return ADDR_BITS_REMOVE ((CORE_ADDR) read_register (PC_REGNUM)); |
b1b4a89e JK |
944 | #endif |
945 | #endif | |
bd5635a1 RP |
946 | } |
947 | ||
948 | void | |
949 | write_pc (val) | |
950 | CORE_ADDR val; | |
951 | { | |
de6a2704 JK |
952 | #ifdef TARGET_WRITE_PC |
953 | TARGET_WRITE_PC (val); | |
954 | #else | |
bd5635a1 RP |
955 | write_register (PC_REGNUM, (long) val); |
956 | #ifdef NPC_REGNUM | |
b1b4a89e JK |
957 | write_register (NPC_REGNUM, (long) val + 4); |
958 | #ifdef NNPC_REGNUM | |
959 | write_register (NNPC_REGNUM, (long) val + 8); | |
960 | #endif | |
961 | #endif | |
bd5635a1 RP |
962 | #endif |
963 | pc_changed = 0; | |
964 | } | |
965 | ||
de6a2704 JK |
966 | /* Cope with strage ways of getting to the stack and frame pointers */ |
967 | ||
968 | CORE_ADDR | |
969 | read_sp () | |
970 | { | |
971 | #ifdef TARGET_READ_SP | |
972 | return TARGET_READ_SP (); | |
973 | #else | |
974 | return read_register (SP_REGNUM); | |
975 | #endif | |
976 | } | |
977 | ||
978 | void | |
979 | write_sp (val) | |
980 | CORE_ADDR val; | |
981 | { | |
982 | #ifdef TARGET_WRITE_SP | |
983 | TARGET_WRITE_SP (val); | |
984 | #else | |
985 | write_register (SP_REGNUM, val); | |
986 | #endif | |
987 | } | |
988 | ||
989 | ||
990 | CORE_ADDR | |
991 | read_fp () | |
992 | { | |
993 | #ifdef TARGET_READ_FP | |
994 | return TARGET_READ_FP (); | |
995 | #else | |
996 | return read_register (FP_REGNUM); | |
997 | #endif | |
998 | } | |
999 | ||
1000 | void | |
1001 | write_fp (val) | |
1002 | CORE_ADDR val; | |
1003 | { | |
1004 | #ifdef TARGET_WRITE_FP | |
1005 | TARGET_WRITE_FP (val); | |
1006 | #else | |
1007 | write_register (FP_REGNUM, val); | |
1008 | #endif | |
1009 | } | |
1010 | ||
1304f099 | 1011 | const char * const reg_names[] = REGISTER_NAMES; |
bd5635a1 RP |
1012 | |
1013 | /* Print out the machine register regnum. If regnum is -1, | |
ee0613d1 JG |
1014 | print all registers (fpregs == 1) or all non-float registers |
1015 | (fpregs == 0). | |
1016 | ||
bd5635a1 RP |
1017 | For most machines, having all_registers_info() print the |
1018 | register(s) one per line is good enough. If a different format | |
ee0613d1 | 1019 | is required, (eg, for MIPS or Pyramid 90x, which both have |
bd5635a1 | 1020 | lots of regs), or there is an existing convention for showing |
ee0613d1 | 1021 | all the registers, define the macro DO_REGISTERS_INFO(regnum, fp) |
bd5635a1 | 1022 | to provide that format. */ |
ee0613d1 | 1023 | |
bd5635a1 | 1024 | #if !defined (DO_REGISTERS_INFO) |
ee0613d1 JG |
1025 | #define DO_REGISTERS_INFO(regnum, fp) do_registers_info(regnum, fp) |
1026 | static void | |
1027 | do_registers_info (regnum, fpregs) | |
bd5635a1 | 1028 | int regnum; |
ee0613d1 | 1029 | int fpregs; |
bd5635a1 RP |
1030 | { |
1031 | register int i; | |
1032 | ||
bd5635a1 RP |
1033 | for (i = 0; i < NUM_REGS; i++) |
1034 | { | |
1035 | char raw_buffer[MAX_REGISTER_RAW_SIZE]; | |
1036 | char virtual_buffer[MAX_REGISTER_VIRTUAL_SIZE]; | |
1037 | ||
ee0613d1 JG |
1038 | /* Decide between printing all regs, nonfloat regs, or specific reg. */ |
1039 | if (regnum == -1) { | |
1040 | if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT && !fpregs) | |
1041 | continue; | |
1042 | } else { | |
1043 | if (i != regnum) | |
1044 | continue; | |
1045 | } | |
bd5635a1 RP |
1046 | |
1047 | fputs_filtered (reg_names[i], stdout); | |
1048 | print_spaces_filtered (15 - strlen (reg_names[i]), stdout); | |
1049 | ||
1050 | /* Get the data in raw format, then convert also to virtual format. */ | |
1051 | if (read_relative_register_raw_bytes (i, raw_buffer)) | |
1052 | { | |
1053 | printf_filtered ("Invalid register contents\n"); | |
1054 | continue; | |
1055 | } | |
1056 | ||
b5a3d2aa | 1057 | REGISTER_CONVERT_TO_VIRTUAL (i, raw_buffer, virtual_buffer); |
bd5635a1 RP |
1058 | |
1059 | /* If virtual format is floating, print it that way, and in raw hex. */ | |
1060 | if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT | |
1061 | && ! INVALID_FLOAT (virtual_buffer, REGISTER_VIRTUAL_SIZE (i))) | |
1062 | { | |
1063 | register int j; | |
1064 | ||
1065 | val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, | |
1066 | stdout, 0, 1, 0, Val_pretty_default); | |
1067 | ||
1068 | printf_filtered ("\t(raw 0x"); | |
1069 | for (j = 0; j < REGISTER_RAW_SIZE (i); j++) | |
1070 | printf_filtered ("%02x", (unsigned char)raw_buffer[j]); | |
1071 | printf_filtered (")"); | |
1072 | } | |
1073 | ||
1074 | /* FIXME! val_print probably can handle all of these cases now... */ | |
1075 | ||
1076 | /* Else if virtual format is too long for printf, | |
1077 | print in hex a byte at a time. */ | |
1078 | else if (REGISTER_VIRTUAL_SIZE (i) > sizeof (long)) | |
1079 | { | |
1080 | register int j; | |
1081 | printf_filtered ("0x"); | |
1082 | for (j = 0; j < REGISTER_VIRTUAL_SIZE (i); j++) | |
1083 | printf_filtered ("%02x", (unsigned char)virtual_buffer[j]); | |
1084 | } | |
1085 | /* Else print as integer in hex and in decimal. */ | |
1086 | else | |
1087 | { | |
1088 | val_print (REGISTER_VIRTUAL_TYPE (i), raw_buffer, 0, | |
1089 | stdout, 'x', 1, 0, Val_pretty_default); | |
1090 | printf_filtered ("\t"); | |
1091 | val_print (REGISTER_VIRTUAL_TYPE (i), raw_buffer, 0, | |
1092 | stdout, 0, 1, 0, Val_pretty_default); | |
1093 | } | |
1094 | ||
1095 | /* The SPARC wants to print even-numbered float regs as doubles | |
1096 | in addition to printing them as floats. */ | |
1097 | #ifdef PRINT_REGISTER_HOOK | |
1098 | PRINT_REGISTER_HOOK (i); | |
1099 | #endif | |
1100 | ||
1101 | printf_filtered ("\n"); | |
1102 | } | |
1103 | } | |
1104 | #endif /* no DO_REGISTERS_INFO. */ | |
1105 | ||
1106 | static void | |
ee0613d1 | 1107 | registers_info (addr_exp, fpregs) |
bd5635a1 | 1108 | char *addr_exp; |
ee0613d1 | 1109 | int fpregs; |
bd5635a1 RP |
1110 | { |
1111 | int regnum; | |
b5a3d2aa | 1112 | register char *end; |
bd5635a1 RP |
1113 | |
1114 | if (!target_has_registers) | |
1115 | error ("The program has no registers now."); | |
1116 | ||
b5a3d2aa | 1117 | if (!addr_exp) |
bd5635a1 | 1118 | { |
b5a3d2aa SG |
1119 | DO_REGISTERS_INFO(-1, fpregs); |
1120 | return; | |
bd5635a1 | 1121 | } |
bd5635a1 | 1122 | |
b5a3d2aa SG |
1123 | do |
1124 | { | |
1125 | if (addr_exp[0] == '$') | |
1126 | addr_exp++; | |
1127 | end = addr_exp; | |
1128 | while (*end != '\0' && *end != ' ' && *end != '\t') | |
1129 | ++end; | |
1130 | for (regnum = 0; regnum < NUM_REGS; regnum++) | |
1131 | if (!strncmp (addr_exp, reg_names[regnum], end - addr_exp) | |
1132 | && strlen (reg_names[regnum]) == end - addr_exp) | |
1133 | goto found; | |
1134 | if (*addr_exp >= '0' && *addr_exp <= '9') | |
1135 | regnum = atoi (addr_exp); /* Take a number */ | |
1136 | if (regnum >= NUM_REGS) /* Bad name, or bad number */ | |
1137 | error ("%.*s: invalid register", end - addr_exp, addr_exp); | |
1138 | ||
1139 | found: | |
1140 | DO_REGISTERS_INFO(regnum, fpregs); | |
1141 | ||
1142 | addr_exp = end; | |
1143 | while (*addr_exp == ' ' || *addr_exp == '\t') | |
1144 | ++addr_exp; | |
1145 | } while (*addr_exp != '\0'); | |
ee0613d1 JG |
1146 | } |
1147 | ||
1148 | static void | |
1304f099 | 1149 | all_registers_info (addr_exp, from_tty) |
ee0613d1 | 1150 | char *addr_exp; |
1304f099 | 1151 | int from_tty; |
ee0613d1 JG |
1152 | { |
1153 | registers_info (addr_exp, 1); | |
1154 | } | |
1155 | ||
1156 | static void | |
1304f099 | 1157 | nofp_registers_info (addr_exp, from_tty) |
ee0613d1 | 1158 | char *addr_exp; |
1304f099 | 1159 | int from_tty; |
ee0613d1 JG |
1160 | { |
1161 | registers_info (addr_exp, 0); | |
bd5635a1 RP |
1162 | } |
1163 | \f | |
1164 | /* | |
1165 | * TODO: | |
1166 | * Should save/restore the tty state since it might be that the | |
1167 | * program to be debugged was started on this tty and it wants | |
1168 | * the tty in some state other than what we want. If it's running | |
1169 | * on another terminal or without a terminal, then saving and | |
1170 | * restoring the tty state is a harmless no-op. | |
1171 | * This only needs to be done if we are attaching to a process. | |
1172 | */ | |
1173 | ||
1174 | /* | |
b5a3d2aa SG |
1175 | attach_command -- |
1176 | takes a program started up outside of gdb and ``attaches'' to it. | |
1177 | This stops it cold in its tracks and allows us to start debugging it. | |
1178 | and wait for the trace-trap that results from attaching. */ | |
1179 | ||
bd5635a1 RP |
1180 | void |
1181 | attach_command (args, from_tty) | |
1182 | char *args; | |
1183 | int from_tty; | |
1184 | { | |
f266e564 | 1185 | dont_repeat (); /* Not for the faint of heart */ |
b5a3d2aa SG |
1186 | |
1187 | if (target_has_execution) | |
1188 | { | |
1189 | if (query ("A program is being debugged already. Kill it? ")) | |
1190 | target_kill (); | |
1191 | else | |
b1b4a89e | 1192 | error ("Not killed."); |
b5a3d2aa SG |
1193 | } |
1194 | ||
bd5635a1 | 1195 | target_attach (args, from_tty); |
b5a3d2aa SG |
1196 | |
1197 | /* Set up the "saved terminal modes" of the inferior | |
1198 | based on what modes we are starting it with. */ | |
1199 | target_terminal_init (); | |
1200 | ||
1201 | /* Install inferior's terminal modes. */ | |
1202 | target_terminal_inferior (); | |
1203 | ||
1204 | /* Set up execution context to know that we should return from | |
1205 | wait_for_inferior as soon as the target reports a stop. */ | |
1206 | init_wait_for_inferior (); | |
1207 | clear_proceed_status (); | |
1208 | stop_soon_quietly = 1; | |
1209 | ||
1210 | wait_for_inferior (); | |
1211 | ||
1212 | #ifdef SOLIB_ADD | |
1213 | /* Add shared library symbols from the newly attached process, if any. */ | |
1214 | SOLIB_ADD ((char *)0, from_tty, (struct target_ops *)0); | |
1215 | #endif | |
1216 | ||
1217 | normal_stop (); | |
bd5635a1 RP |
1218 | } |
1219 | ||
1220 | /* | |
1221 | * detach_command -- | |
1222 | * takes a program previously attached to and detaches it. | |
1223 | * The program resumes execution and will no longer stop | |
1224 | * on signals, etc. We better not have left any breakpoints | |
1225 | * in the program or it'll die when it hits one. For this | |
1226 | * to work, it may be necessary for the process to have been | |
1227 | * previously attached. It *might* work if the program was | |
1228 | * started via the normal ptrace (PTRACE_TRACEME). | |
1229 | */ | |
1230 | ||
1231 | static void | |
1232 | detach_command (args, from_tty) | |
1233 | char *args; | |
1234 | int from_tty; | |
1235 | { | |
f266e564 | 1236 | dont_repeat (); /* Not for the faint of heart */ |
bd5635a1 RP |
1237 | target_detach (args, from_tty); |
1238 | } | |
1239 | ||
1240 | /* ARGSUSED */ | |
1241 | static void | |
1304f099 | 1242 | float_info (addr_exp, from_tty) |
bd5635a1 | 1243 | char *addr_exp; |
1304f099 | 1244 | int from_tty; |
bd5635a1 RP |
1245 | { |
1246 | #ifdef FLOAT_INFO | |
1247 | FLOAT_INFO; | |
1248 | #else | |
1304f099 | 1249 | printf_filtered ("No floating point info available for this processor.\n"); |
bd5635a1 RP |
1250 | #endif |
1251 | } | |
1252 | \f | |
f266e564 JK |
1253 | /* ARGSUSED */ |
1254 | static void | |
1255 | unset_command (args, from_tty) | |
1256 | char *args; | |
1257 | int from_tty; | |
1258 | { | |
1304f099 | 1259 | printf_filtered ("\"unset\" must be followed by the name of an unset subcommand.\n"); |
f266e564 JK |
1260 | help_list (unsetlist, "unset ", -1, stdout); |
1261 | } | |
1262 | ||
bd5635a1 RP |
1263 | void |
1264 | _initialize_infcmd () | |
1265 | { | |
1266 | struct cmd_list_element *c; | |
1267 | ||
1268 | add_com ("tty", class_run, tty_command, | |
1269 | "Set terminal for future runs of program being debugged."); | |
1270 | ||
1271 | add_show_from_set | |
1272 | (add_set_cmd ("args", class_run, var_string_noescape, (char *)&inferior_args, | |
1273 | ||
1274 | "Set arguments to give program being debugged when it is started.\n\ | |
1275 | Follow this command with any number of args, to be passed to the program.", | |
1276 | &setlist), | |
1277 | &showlist); | |
1278 | ||
1279 | c = add_cmd | |
1280 | ("environment", no_class, environment_info, | |
1281 | "The environment to give the program, or one variable's value.\n\ | |
1282 | With an argument VAR, prints the value of environment variable VAR to\n\ | |
1283 | give the program being debugged. With no arguments, prints the entire\n\ | |
1284 | environment to be given to the program.", &showlist); | |
1285 | c->completer = noop_completer; | |
1286 | ||
f266e564 JK |
1287 | add_prefix_cmd ("unset", no_class, unset_command, |
1288 | "Complement to certain \"set\" commands", | |
1289 | &unsetlist, "unset ", 0, &cmdlist); | |
1290 | ||
bd5635a1 RP |
1291 | c = add_cmd ("environment", class_run, unset_environment_command, |
1292 | "Cancel environment variable VAR for the program.\n\ | |
1293 | This does not affect the program until the next \"run\" command.", | |
f266e564 | 1294 | &unsetlist); |
bd5635a1 RP |
1295 | c->completer = noop_completer; |
1296 | ||
1297 | c = add_cmd ("environment", class_run, set_environment_command, | |
1298 | "Set environment variable value to give the program.\n\ | |
1299 | Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\ | |
1300 | VALUES of environment variables are uninterpreted strings.\n\ | |
1301 | This does not affect the program until the next \"run\" command.", | |
1302 | &setlist); | |
1303 | c->completer = noop_completer; | |
1304 | ||
1305 | add_com ("path", class_files, path_command, | |
1306 | "Add directory DIR(s) to beginning of search path for object files.\n\ | |
1307 | $cwd in the path means the current working directory.\n\ | |
1308 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
1309 | directories, separated by colons. These directories are searched to find\n\ | |
1310 | fully linked executable files and separately compiled object files as needed."); | |
1311 | ||
ee0613d1 | 1312 | c = add_cmd ("paths", no_class, path_info, |
bd5635a1 RP |
1313 | "Current search path for finding object files.\n\ |
1314 | $cwd in the path means the current working directory.\n\ | |
1315 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
1316 | directories, separated by colons. These directories are searched to find\n\ | |
ee0613d1 JG |
1317 | fully linked executable files and separately compiled object files as needed.", &showlist); |
1318 | c->completer = noop_completer; | |
bd5635a1 RP |
1319 | |
1320 | add_com ("attach", class_run, attach_command, | |
1321 | "Attach to a process or file outside of GDB.\n\ | |
1322 | This command attaches to another target, of the same type as your last\n\ | |
1323 | `target' command (`info files' will show your target stack).\n\ | |
1324 | The command may take as argument a process id or a device file.\n\ | |
1325 | For a process id, you must have permission to send the process a signal,\n\ | |
1326 | and it must have the same effective uid as the debugger.\n\ | |
1327 | When using \"attach\", you should use the \"file\" command to specify\n\ | |
1328 | the program running in the process, and to load its symbol table."); | |
1329 | ||
1330 | add_com ("detach", class_run, detach_command, | |
1331 | "Detach a process or file previously attached.\n\ | |
1332 | If a process, it is no longer traced, and it continues its execution. If you\n\ | |
1333 | were debugging a file, the file is closed and gdb no longer accesses it."); | |
1334 | ||
1335 | add_com ("signal", class_run, signal_command, | |
1336 | "Continue program giving it signal number SIGNUMBER."); | |
1337 | ||
1338 | add_com ("stepi", class_run, stepi_command, | |
1339 | "Step one instruction exactly.\n\ | |
1340 | Argument N means do this N times (or till program stops for another reason)."); | |
1341 | add_com_alias ("si", "stepi", class_alias, 0); | |
1342 | ||
1343 | add_com ("nexti", class_run, nexti_command, | |
1344 | "Step one instruction, but proceed through subroutine calls.\n\ | |
1345 | Argument N means do this N times (or till program stops for another reason)."); | |
1346 | add_com_alias ("ni", "nexti", class_alias, 0); | |
1347 | ||
1348 | add_com ("finish", class_run, finish_command, | |
1349 | "Execute until selected stack frame returns.\n\ | |
1350 | Upon return, the value returned is printed and put in the value history."); | |
1351 | ||
1352 | add_com ("next", class_run, next_command, | |
1353 | "Step program, proceeding through subroutine calls.\n\ | |
1354 | Like the \"step\" command as long as subroutine calls do not happen;\n\ | |
1355 | when they do, the call is treated as one instruction.\n\ | |
1356 | Argument N means do this N times (or till program stops for another reason)."); | |
1357 | add_com_alias ("n", "next", class_run, 1); | |
1358 | ||
1359 | add_com ("step", class_run, step_command, | |
1360 | "Step program until it reaches a different source line.\n\ | |
1361 | Argument N means do this N times (or till program stops for another reason)."); | |
1362 | add_com_alias ("s", "step", class_run, 1); | |
1363 | ||
1364 | add_com ("until", class_run, until_command, | |
1365 | "Execute until the program reaches a source line greater than the current\n\ | |
1366 | or a specified line or address or function (same args as break command).\n\ | |
1367 | Execution will also stop upon exit from the current stack frame."); | |
1368 | add_com_alias ("u", "until", class_run, 1); | |
1369 | ||
1370 | add_com ("jump", class_run, jump_command, | |
1371 | "Continue program being debugged at specified line or address.\n\ | |
1372 | Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\ | |
1373 | for an address to start at."); | |
1374 | ||
1375 | add_com ("continue", class_run, continue_command, | |
1376 | "Continue program being debugged, after signal or breakpoint.\n\ | |
de6a2704 JK |
1377 | If proceeding from breakpoint, a number N may be used as an argument,\n\ |
1378 | which means to set the ignore count of that breakpoint to N - 1 (so that\n\ | |
1379 | the breakpoint won't break until the Nth time it is reached)."); | |
bd5635a1 RP |
1380 | add_com_alias ("c", "cont", class_run, 1); |
1381 | add_com_alias ("fg", "cont", class_run, 1); | |
1382 | ||
1383 | add_com ("run", class_run, run_command, | |
1384 | "Start debugged program. You may specify arguments to give it.\n\ | |
1385 | Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\ | |
1386 | Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\ | |
b4fde6fa | 1387 | With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\ |
bd5635a1 RP |
1388 | To cancel previous arguments and run with no arguments,\n\ |
1389 | use \"set args\" without arguments."); | |
1390 | add_com_alias ("r", "run", class_run, 1); | |
1391 | ||
ee0613d1 JG |
1392 | add_info ("registers", nofp_registers_info, |
1393 | "List of integer registers and their contents, for selected stack frame.\n\ | |
1394 | Register name as argument means describe only that register."); | |
1395 | ||
1396 | add_info ("all-registers", all_registers_info, | |
1397 | "List of all registers and their contents, for selected stack frame.\n\ | |
bd5635a1 RP |
1398 | Register name as argument means describe only that register."); |
1399 | ||
1400 | add_info ("program", program_info, | |
1401 | "Execution status of the program."); | |
1402 | ||
1403 | add_info ("float", float_info, | |
1404 | "Print the status of the floating point unit\n"); | |
1405 | ||
1406 | inferior_args = savestring ("", 1); /* Initially no args */ | |
1407 | inferior_environ = make_environ (); | |
1408 | init_environ (inferior_environ); | |
1409 | } |