Commit | Line | Data |
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3b55fbe3 | 1 | /* Memory-access and commands for "inferior" process, for GDB. |
4ef1f467 DT |
2 | Copyright 1986, 87, 88, 89, 91, 92, 95, 96, 1998 |
3 | Free Software Foundation, Inc. | |
bd5635a1 RP |
4 | |
5 | This file is part of GDB. | |
6 | ||
ee0613d1 | 7 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 8 | it under the terms of the GNU General Public License as published by |
ee0613d1 JG |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. | |
bd5635a1 | 11 | |
ee0613d1 | 12 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
ee0613d1 | 18 | along with this program; if not, write to the Free Software |
f434284a | 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
bd5635a1 | 20 | |
1304f099 | 21 | #include "defs.h" |
bd5635a1 | 22 | #include <signal.h> |
2b576293 | 23 | #include "gdb_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" | |
f6c4bf1a | 33 | #include "language.h" |
4ef1f467 | 34 | #include "symfile.h" |
bd5635a1 | 35 | |
4ef1f467 DT |
36 | /* Functions exported for general use: */ |
37 | ||
38 | void nofp_registers_info PARAMS ((char *, int)); | |
39 | ||
40 | void all_registers_info PARAMS ((char *, int)); | |
41 | ||
42 | void registers_info PARAMS ((char *, int)); | |
43 | ||
44 | /* Local functions: */ | |
45 | ||
46 | void continue_command PARAMS ((char *, int)); | |
1304f099 | 47 | |
3b55fbe3 | 48 | static void until_next_command PARAMS ((int)); |
1304f099 | 49 | |
3b55fbe3 | 50 | static void until_command PARAMS ((char *, int)); |
1304f099 | 51 | |
3b55fbe3 | 52 | static void path_info PARAMS ((char *, int)); |
1304f099 | 53 | |
3b55fbe3 | 54 | static void path_command PARAMS ((char *, int)); |
1304f099 | 55 | |
3b55fbe3 | 56 | static void unset_command PARAMS ((char *, int)); |
1304f099 | 57 | |
3b55fbe3 | 58 | static void float_info PARAMS ((char *, int)); |
1304f099 | 59 | |
3b55fbe3 | 60 | static void detach_command PARAMS ((char *, int)); |
1304f099 | 61 | |
3f550b59 | 62 | #if !defined (DO_REGISTERS_INFO) |
3b55fbe3 | 63 | static void do_registers_info PARAMS ((int, int)); |
3f550b59 | 64 | #endif |
1304f099 | 65 | |
3b55fbe3 | 66 | static void unset_environment_command PARAMS ((char *, int)); |
1304f099 | 67 | |
3b55fbe3 | 68 | static void set_environment_command PARAMS ((char *, int)); |
1304f099 | 69 | |
3b55fbe3 | 70 | static void environment_info PARAMS ((char *, int)); |
1304f099 | 71 | |
3b55fbe3 | 72 | static void program_info PARAMS ((char *, int)); |
1304f099 | 73 | |
3b55fbe3 | 74 | static void finish_command PARAMS ((char *, int)); |
1304f099 | 75 | |
3b55fbe3 | 76 | static void signal_command PARAMS ((char *, int)); |
1304f099 | 77 | |
3b55fbe3 | 78 | static void jump_command PARAMS ((char *, int)); |
1304f099 | 79 | |
3b55fbe3 | 80 | static void step_1 PARAMS ((int, int, char *)); |
1304f099 | 81 | |
4ef1f467 | 82 | void nexti_command PARAMS ((char *, int)); |
bd5635a1 | 83 | |
4ef1f467 | 84 | void stepi_command PARAMS ((char *, int)); |
1304f099 | 85 | |
3b55fbe3 | 86 | static void next_command PARAMS ((char *, int)); |
1304f099 | 87 | |
3b55fbe3 | 88 | static void step_command PARAMS ((char *, int)); |
1304f099 | 89 | |
3b55fbe3 | 90 | static void run_command PARAMS ((char *, int)); |
bd5635a1 | 91 | |
4ef1f467 DT |
92 | void _initialize_infcmd PARAMS ((void)); |
93 | ||
3f550b59 | 94 | #ifdef CALL_DUMMY_BREAKPOINT_OFFSET |
b607efe7 | 95 | static void breakpoint_auto_delete_contents PARAMS ((PTR)); |
3f550b59 | 96 | #endif |
b607efe7 | 97 | |
bd5635a1 RP |
98 | #define ERROR_NO_INFERIOR \ |
99 | if (!target_has_execution) error ("The program is not being run."); | |
100 | ||
101 | /* String containing arguments to give to the program, separated by spaces. | |
102 | Empty string (pointer to '\0') means no args. */ | |
103 | ||
104 | static char *inferior_args; | |
105 | ||
106 | /* File name for default use for standard in/out in the inferior. */ | |
107 | ||
108 | char *inferior_io_terminal; | |
109 | ||
110 | /* Pid of our debugged inferior, or 0 if no inferior now. | |
111 | Since various parts of infrun.c test this to see whether there is a program | |
112 | being debugged it should be nonzero (currently 3 is used) for remote | |
113 | debugging. */ | |
114 | ||
115 | int inferior_pid; | |
116 | ||
117 | /* Last signal that the inferior received (why it stopped). */ | |
118 | ||
67ac9759 | 119 | enum target_signal stop_signal; |
bd5635a1 RP |
120 | |
121 | /* Address at which inferior stopped. */ | |
122 | ||
123 | CORE_ADDR stop_pc; | |
124 | ||
bd5635a1 RP |
125 | /* Chain containing status of breakpoint(s) that we have stopped at. */ |
126 | ||
127 | bpstat stop_bpstat; | |
128 | ||
129 | /* Flag indicating that a command has proceeded the inferior past the | |
130 | current breakpoint. */ | |
131 | ||
132 | int breakpoint_proceeded; | |
133 | ||
134 | /* Nonzero if stopped due to a step command. */ | |
135 | ||
136 | int stop_step; | |
137 | ||
138 | /* Nonzero if stopped due to completion of a stack dummy routine. */ | |
139 | ||
140 | int stop_stack_dummy; | |
141 | ||
142 | /* Nonzero if stopped due to a random (unexpected) signal in inferior | |
143 | process. */ | |
144 | ||
145 | int stopped_by_random_signal; | |
146 | ||
147 | /* Range to single step within. | |
148 | If this is nonzero, respond to a single-step signal | |
149 | by continuing to step if the pc is in this range. */ | |
150 | ||
151 | CORE_ADDR step_range_start; /* Inclusive */ | |
152 | CORE_ADDR step_range_end; /* Exclusive */ | |
153 | ||
154 | /* Stack frame address as of when stepping command was issued. | |
155 | This is how we know when we step into a subroutine call, | |
156 | and how to set the frame for the breakpoint used to step out. */ | |
157 | ||
3b55fbe3 | 158 | CORE_ADDR step_frame_address; |
bd5635a1 | 159 | |
16726dd1 JK |
160 | /* Our notion of the current stack pointer. */ |
161 | ||
162 | CORE_ADDR step_sp; | |
163 | ||
bd5635a1 | 164 | /* 1 means step over all subroutine calls. |
b5a3d2aa | 165 | 0 means don't step over calls (used by stepi). |
bd5635a1 RP |
166 | -1 means step over calls to undebuggable functions. */ |
167 | ||
168 | int step_over_calls; | |
169 | ||
170 | /* If stepping, nonzero means step count is > 1 | |
171 | so don't print frame next time inferior stops | |
172 | if it stops due to stepping. */ | |
173 | ||
174 | int step_multi; | |
175 | ||
176 | /* Environment to use for running inferior, | |
177 | in format described in environ.h. */ | |
178 | ||
179 | struct environ *inferior_environ; | |
180 | ||
bd5635a1 | 181 | \f |
e1ce8aa5 | 182 | /* ARGSUSED */ |
bd5635a1 RP |
183 | void |
184 | tty_command (file, from_tty) | |
185 | char *file; | |
186 | int from_tty; | |
187 | { | |
188 | if (file == 0) | |
189 | error_no_arg ("terminal name for running target process"); | |
190 | ||
191 | inferior_io_terminal = savestring (file, strlen (file)); | |
192 | } | |
193 | ||
194 | static void | |
195 | run_command (args, from_tty) | |
196 | char *args; | |
197 | int from_tty; | |
198 | { | |
199 | char *exec_file; | |
200 | ||
201 | dont_repeat (); | |
202 | ||
8fc2b417 | 203 | if (inferior_pid != 0 && target_has_execution) |
bd5635a1 RP |
204 | { |
205 | if ( | |
206 | !query ("The program being debugged has been started already.\n\ | |
207 | Start it from the beginning? ")) | |
208 | error ("Program not restarted."); | |
ee0613d1 | 209 | target_kill (); |
bd5635a1 RP |
210 | } |
211 | ||
9f577285 SS |
212 | clear_breakpoint_hit_counts (); |
213 | ||
bd5635a1 RP |
214 | exec_file = (char *) get_exec_file (0); |
215 | ||
4ef1f467 DT |
216 | do_run_cleanups (NULL); |
217 | ||
1304f099 | 218 | /* The exec file is re-read every time we do a generic_mourn_inferior, so |
bd5635a1 RP |
219 | we just have to worry about the symbol file. */ |
220 | reread_symbols (); | |
221 | ||
f6c4bf1a JK |
222 | /* We keep symbols from add-symbol-file, on the grounds that the |
223 | user might want to add some symbols before running the program | |
224 | (right?). But sometimes (dynamic loading where the user manually | |
225 | introduces the new symbols with add-symbol-file), the code which | |
226 | the symbols describe does not persist between runs. Currently | |
227 | the user has to manually nuke all symbols between runs if they | |
228 | want them to go away (PR 2207). This is probably reasonable. */ | |
229 | ||
bd5635a1 RP |
230 | if (args) |
231 | { | |
232 | char *cmd; | |
ee0613d1 | 233 | cmd = concat ("set args ", args, NULL); |
bd5635a1 RP |
234 | make_cleanup (free, cmd); |
235 | execute_command (cmd, from_tty); | |
236 | } | |
237 | ||
238 | if (from_tty) | |
239 | { | |
b5a3d2aa SG |
240 | puts_filtered("Starting program: "); |
241 | if (exec_file) | |
242 | puts_filtered(exec_file); | |
243 | puts_filtered(" "); | |
244 | puts_filtered(inferior_args); | |
245 | puts_filtered("\n"); | |
199b2450 | 246 | gdb_flush (gdb_stdout); |
bd5635a1 RP |
247 | } |
248 | ||
249 | target_create_inferior (exec_file, inferior_args, | |
250 | environ_vector (inferior_environ)); | |
251 | } | |
252 | \f | |
4ef1f467 | 253 | void |
bd5635a1 RP |
254 | continue_command (proc_count_exp, from_tty) |
255 | char *proc_count_exp; | |
256 | int from_tty; | |
257 | { | |
258 | ERROR_NO_INFERIOR; | |
259 | ||
260 | /* If have argument, set proceed count of breakpoint we stopped at. */ | |
261 | ||
262 | if (proc_count_exp != NULL) | |
263 | { | |
264 | bpstat bs = stop_bpstat; | |
265 | int num = bpstat_num (&bs); | |
266 | if (num == 0 && from_tty) | |
267 | { | |
268 | printf_filtered | |
269 | ("Not stopped at any breakpoint; argument ignored.\n"); | |
270 | } | |
271 | while (num != 0) | |
272 | { | |
273 | set_ignore_count (num, | |
274 | parse_and_eval_address (proc_count_exp) - 1, | |
275 | from_tty); | |
276 | /* set_ignore_count prints a message ending with a period. | |
277 | So print two spaces before "Continuing.". */ | |
278 | if (from_tty) | |
1304f099 | 279 | printf_filtered (" "); |
bd5635a1 RP |
280 | num = bpstat_num (&bs); |
281 | } | |
282 | } | |
283 | ||
284 | if (from_tty) | |
1304f099 | 285 | printf_filtered ("Continuing.\n"); |
bd5635a1 RP |
286 | |
287 | clear_proceed_status (); | |
288 | ||
c6e0f918 | 289 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); |
bd5635a1 RP |
290 | } |
291 | \f | |
292 | /* Step until outside of current statement. */ | |
bd5635a1 | 293 | |
e1ce8aa5 | 294 | /* ARGSUSED */ |
bd5635a1 RP |
295 | static void |
296 | step_command (count_string, from_tty) | |
1304f099 | 297 | char *count_string; |
bd5635a1 RP |
298 | int from_tty; |
299 | { | |
300 | step_1 (0, 0, count_string); | |
301 | } | |
302 | ||
303 | /* Likewise, but skip over subroutine calls as if single instructions. */ | |
304 | ||
e1ce8aa5 | 305 | /* ARGSUSED */ |
bd5635a1 RP |
306 | static void |
307 | next_command (count_string, from_tty) | |
1304f099 | 308 | char *count_string; |
bd5635a1 RP |
309 | int from_tty; |
310 | { | |
311 | step_1 (1, 0, count_string); | |
312 | } | |
313 | ||
314 | /* Likewise, but step only one instruction. */ | |
315 | ||
e1ce8aa5 | 316 | /* ARGSUSED */ |
4ef1f467 | 317 | void |
bd5635a1 | 318 | stepi_command (count_string, from_tty) |
1304f099 | 319 | char *count_string; |
bd5635a1 RP |
320 | int from_tty; |
321 | { | |
322 | step_1 (0, 1, count_string); | |
323 | } | |
324 | ||
e1ce8aa5 | 325 | /* ARGSUSED */ |
4ef1f467 | 326 | void |
bd5635a1 | 327 | nexti_command (count_string, from_tty) |
1304f099 | 328 | char *count_string; |
bd5635a1 RP |
329 | int from_tty; |
330 | { | |
331 | step_1 (1, 1, count_string); | |
332 | } | |
333 | ||
334 | static void | |
335 | step_1 (skip_subroutines, single_inst, count_string) | |
336 | int skip_subroutines; | |
337 | int single_inst; | |
338 | char *count_string; | |
339 | { | |
340 | register int count = 1; | |
3b55fbe3 | 341 | struct frame_info *frame; |
1304f099 | 342 | struct cleanup *cleanups = 0; |
bd5635a1 RP |
343 | |
344 | ERROR_NO_INFERIOR; | |
345 | count = count_string ? parse_and_eval_address (count_string) : 1; | |
346 | ||
1304f099 JG |
347 | if (!single_inst || skip_subroutines) /* leave si command alone */ |
348 | { | |
349 | enable_longjmp_breakpoint(); | |
4ef1f467 DT |
350 | cleanups = make_cleanup ((make_cleanup_func) disable_longjmp_breakpoint, |
351 | 0); | |
1304f099 JG |
352 | } |
353 | ||
bd5635a1 RP |
354 | for (; count > 0; count--) |
355 | { | |
356 | clear_proceed_status (); | |
357 | ||
3b55fbe3 JK |
358 | frame = get_current_frame (); |
359 | if (!frame) /* Avoid coredump here. Why tho? */ | |
bd5635a1 | 360 | error ("No current frame"); |
3b55fbe3 | 361 | step_frame_address = FRAME_FP (frame); |
16726dd1 | 362 | step_sp = read_sp (); |
bd5635a1 RP |
363 | |
364 | if (! single_inst) | |
365 | { | |
366 | find_pc_line_pc_range (stop_pc, &step_range_start, &step_range_end); | |
367 | if (step_range_end == 0) | |
368 | { | |
860a1754 JK |
369 | char *name; |
370 | if (find_pc_partial_function (stop_pc, &name, &step_range_start, | |
371 | &step_range_end) == 0) | |
372 | error ("Cannot find bounds of current function"); | |
bd5635a1 | 373 | |
bd5635a1 | 374 | target_terminal_ours (); |
860a1754 JK |
375 | printf_filtered ("\ |
376 | Single stepping until exit from function %s, \n\ | |
377 | which has no line number information.\n", name); | |
bd5635a1 RP |
378 | } |
379 | } | |
380 | else | |
381 | { | |
fe675038 | 382 | /* Say we are stepping, but stop after one insn whatever it does. */ |
bd5635a1 RP |
383 | step_range_start = step_range_end = 1; |
384 | if (!skip_subroutines) | |
fe675038 JK |
385 | /* It is stepi. |
386 | Don't step over function calls, not even to functions lacking | |
387 | line numbers. */ | |
bd5635a1 RP |
388 | step_over_calls = 0; |
389 | } | |
390 | ||
391 | if (skip_subroutines) | |
392 | step_over_calls = 1; | |
393 | ||
394 | step_multi = (count > 1); | |
c6e0f918 | 395 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); |
bd5635a1 RP |
396 | if (! stop_step) |
397 | break; | |
5573d7d4 JK |
398 | |
399 | /* FIXME: On nexti, this may have already been done (when we hit the | |
400 | step resume break, I think). Probably this should be moved to | |
401 | wait_for_inferior (near the top). */ | |
bd5635a1 | 402 | #if defined (SHIFT_INST_REGS) |
07a5991a | 403 | SHIFT_INST_REGS(); |
bd5635a1 RP |
404 | #endif |
405 | } | |
1304f099 JG |
406 | |
407 | if (!single_inst || skip_subroutines) | |
408 | do_cleanups(cleanups); | |
bd5635a1 RP |
409 | } |
410 | \f | |
411 | /* Continue program at specified address. */ | |
412 | ||
413 | static void | |
414 | jump_command (arg, from_tty) | |
415 | char *arg; | |
416 | int from_tty; | |
417 | { | |
418 | register CORE_ADDR addr; | |
419 | struct symtabs_and_lines sals; | |
420 | struct symtab_and_line sal; | |
b4fde6fa FF |
421 | struct symbol *fn; |
422 | struct symbol *sfn; | |
bd5635a1 RP |
423 | |
424 | ERROR_NO_INFERIOR; | |
425 | ||
426 | if (!arg) | |
427 | error_no_arg ("starting address"); | |
428 | ||
429 | sals = decode_line_spec_1 (arg, 1); | |
430 | if (sals.nelts != 1) | |
431 | { | |
432 | error ("Unreasonable jump request"); | |
433 | } | |
434 | ||
435 | sal = sals.sals[0]; | |
1304f099 | 436 | free ((PTR)sals.sals); |
bd5635a1 RP |
437 | |
438 | if (sal.symtab == 0 && sal.pc == 0) | |
439 | error ("No source file has been specified."); | |
440 | ||
ee0613d1 | 441 | resolve_sal_pc (&sal); /* May error out */ |
bd5635a1 | 442 | |
b4fde6fa FF |
443 | /* See if we are trying to jump to another function. */ |
444 | fn = get_frame_function (get_current_frame ()); | |
445 | sfn = find_pc_function (sal.pc); | |
446 | if (fn != NULL && sfn != fn) | |
447 | { | |
2e4964ad FF |
448 | if (!query ("Line %d is not in `%s'. Jump anyway? ", sal.line, |
449 | SYMBOL_SOURCE_NAME (fn))) | |
b4fde6fa FF |
450 | { |
451 | error ("Not confirmed."); | |
452 | /* NOTREACHED */ | |
453 | } | |
b4fde6fa | 454 | } |
bd5635a1 | 455 | |
4ef1f467 DT |
456 | if (sfn != NULL) |
457 | { | |
458 | fixup_symbol_section (sfn, 0); | |
459 | if (section_is_overlay (SYMBOL_BFD_SECTION (sfn)) && | |
460 | !section_is_mapped (SYMBOL_BFD_SECTION (sfn))) | |
461 | { | |
462 | if (!query ("WARNING!!! Destination is in unmapped overlay! Jump anyway? ")) | |
463 | { | |
464 | error ("Not confirmed."); | |
465 | /* NOTREACHED */ | |
466 | } | |
467 | } | |
468 | } | |
469 | ||
470 | ||
5573d7d4 | 471 | addr = sal.pc; |
bd5635a1 RP |
472 | |
473 | if (from_tty) | |
9f577285 SS |
474 | { |
475 | printf_filtered ("Continuing at "); | |
476 | print_address_numeric (addr, 1, gdb_stdout); | |
477 | printf_filtered (".\n"); | |
478 | } | |
bd5635a1 RP |
479 | |
480 | clear_proceed_status (); | |
67ac9759 | 481 | proceed (addr, TARGET_SIGNAL_0, 0); |
bd5635a1 RP |
482 | } |
483 | ||
484 | /* Continue program giving it specified signal. */ | |
485 | ||
486 | static void | |
487 | signal_command (signum_exp, from_tty) | |
488 | char *signum_exp; | |
489 | int from_tty; | |
490 | { | |
67ac9759 | 491 | enum target_signal oursig; |
bd5635a1 RP |
492 | |
493 | dont_repeat (); /* Too dangerous. */ | |
494 | ERROR_NO_INFERIOR; | |
495 | ||
496 | if (!signum_exp) | |
497 | error_no_arg ("signal number"); | |
498 | ||
de6a2704 JK |
499 | /* It would be even slicker to make signal names be valid expressions, |
500 | (the type could be "enum $signal" or some such), then the user could | |
501 | assign them to convenience variables. */ | |
67ac9759 | 502 | oursig = target_signal_from_name (signum_exp); |
de6a2704 | 503 | |
67ac9759 JK |
504 | if (oursig == TARGET_SIGNAL_UNKNOWN) |
505 | { | |
3b55fbe3 | 506 | /* No, try numeric. */ |
b5088d10 JK |
507 | int num = parse_and_eval_address (signum_exp); |
508 | ||
509 | if (num == 0) | |
510 | oursig = TARGET_SIGNAL_0; | |
511 | else | |
512 | oursig = target_signal_from_command (num); | |
67ac9759 | 513 | } |
bd5635a1 RP |
514 | |
515 | if (from_tty) | |
de6a2704 | 516 | { |
67ac9759 JK |
517 | if (oursig == TARGET_SIGNAL_0) |
518 | printf_filtered ("Continuing with no signal.\n"); | |
de6a2704 | 519 | else |
67ac9759 JK |
520 | printf_filtered ("Continuing with signal %s.\n", |
521 | target_signal_to_name (oursig)); | |
de6a2704 | 522 | } |
bd5635a1 RP |
523 | |
524 | clear_proceed_status (); | |
8248d21b JK |
525 | /* "signal 0" should not get stuck if we are stopped at a breakpoint. |
526 | FIXME: Neither should "signal foo" but when I tried passing | |
527 | (CORE_ADDR)-1 unconditionally I got a testsuite failure which I haven't | |
528 | tried to track down yet. */ | |
529 | proceed (oursig == TARGET_SIGNAL_0 ? (CORE_ADDR) -1 : stop_pc, oursig, 0); | |
bd5635a1 RP |
530 | } |
531 | ||
84d59861 JK |
532 | /* Call breakpoint_auto_delete on the current contents of the bpstat |
533 | pointed to by arg (which is really a bpstat *). */ | |
b607efe7 | 534 | |
3f550b59 FF |
535 | #ifdef CALL_DUMMY_BREAKPOINT_OFFSET |
536 | ||
b607efe7 | 537 | static void |
84d59861 JK |
538 | breakpoint_auto_delete_contents (arg) |
539 | PTR arg; | |
540 | { | |
541 | breakpoint_auto_delete (*(bpstat *)arg); | |
542 | } | |
543 | ||
3f550b59 FF |
544 | #endif /* CALL_DUMMY_BREAKPOINT_OFFSET */ |
545 | ||
bd5635a1 RP |
546 | /* Execute a "stack dummy", a piece of code stored in the stack |
547 | by the debugger to be executed in the inferior. | |
548 | ||
549 | To call: first, do PUSH_DUMMY_FRAME. | |
550 | Then push the contents of the dummy. It should end with a breakpoint insn. | |
551 | Then call here, passing address at which to start the dummy. | |
552 | ||
553 | The contents of all registers are saved before the dummy frame is popped | |
554 | and copied into the buffer BUFFER. | |
555 | ||
556 | The dummy's frame is automatically popped whenever that break is hit. | |
557 | If that is the first time the program stops, run_stack_dummy | |
860a1754 JK |
558 | returns to its caller with that frame already gone and returns 0. |
559 | Otherwise, run_stack-dummy returns 1 (the frame will eventually be popped | |
560 | when we do hit that breakpoint). */ | |
bd5635a1 | 561 | |
ee0613d1 | 562 | /* DEBUG HOOK: 4 => return instead of letting the stack dummy run. */ |
bd5635a1 RP |
563 | |
564 | static int stack_dummy_testing = 0; | |
565 | ||
860a1754 JK |
566 | int |
567 | run_stack_dummy (addr, buffer) | |
bd5635a1 RP |
568 | CORE_ADDR addr; |
569 | char buffer[REGISTER_BYTES]; | |
570 | { | |
84d59861 JK |
571 | struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); |
572 | ||
bd5635a1 RP |
573 | /* Now proceed, having reached the desired place. */ |
574 | clear_proceed_status (); | |
575 | if (stack_dummy_testing & 4) | |
576 | { | |
577 | POP_FRAME; | |
37c99ddb | 578 | return(0); |
bd5635a1 | 579 | } |
84d59861 JK |
580 | #ifdef CALL_DUMMY_BREAKPOINT_OFFSET |
581 | { | |
582 | struct breakpoint *bpt; | |
583 | struct symtab_and_line sal; | |
584 | ||
4ef1f467 | 585 | INIT_SAL (&sal); /* initialize to zeroes */ |
f6c4bf1a | 586 | #if CALL_DUMMY_LOCATION != AT_ENTRY_POINT |
84d59861 | 587 | sal.pc = addr - CALL_DUMMY_START_OFFSET + CALL_DUMMY_BREAKPOINT_OFFSET; |
f6c4bf1a | 588 | #else |
9f577285 | 589 | sal.pc = CALL_DUMMY_ADDRESS (); |
f6c4bf1a | 590 | #endif |
4ef1f467 | 591 | sal.section = find_pc_overlay (sal.pc); |
84d59861 | 592 | |
f6c4bf1a JK |
593 | /* Set up a FRAME for the dummy frame so we can pass it to |
594 | set_momentary_breakpoint. We need to give the breakpoint a | |
595 | frame in case there is only one copy of the dummy (e.g. | |
596 | CALL_DUMMY_LOCATION == AFTER_TEXT_END). */ | |
597 | flush_cached_frames (); | |
3b55fbe3 | 598 | set_current_frame (create_new_frame (read_fp (), sal.pc)); |
f6c4bf1a | 599 | |
84d59861 JK |
600 | /* If defined, CALL_DUMMY_BREAKPOINT_OFFSET is where we need to put |
601 | a breakpoint instruction. If not, the call dummy already has the | |
602 | breakpoint instruction in it. | |
603 | ||
604 | addr is the address of the call dummy plus the CALL_DUMMY_START_OFFSET, | |
605 | so we need to subtract the CALL_DUMMY_START_OFFSET. */ | |
606 | bpt = set_momentary_breakpoint (sal, | |
f6c4bf1a | 607 | get_current_frame (), |
84d59861 | 608 | bp_call_dummy); |
2b576293 | 609 | bpt->disposition = del; |
84d59861 JK |
610 | |
611 | /* If all error()s out of proceed ended up calling normal_stop (and | |
612 | perhaps they should; it already does in the special case of error | |
613 | out of resume()), then we wouldn't need this. */ | |
614 | make_cleanup (breakpoint_auto_delete_contents, &stop_bpstat); | |
615 | } | |
616 | #endif /* CALL_DUMMY_BREAKPOINT_OFFSET. */ | |
617 | ||
bd5635a1 | 618 | proceed_to_finish = 1; /* We want stop_registers, please... */ |
67ac9759 | 619 | proceed (addr, TARGET_SIGNAL_0, 0); |
bd5635a1 | 620 | |
84d59861 JK |
621 | discard_cleanups (old_cleanups); |
622 | ||
bd5635a1 | 623 | if (!stop_stack_dummy) |
860a1754 | 624 | return 1; |
bd5635a1 RP |
625 | |
626 | /* On return, the stack dummy has been popped already. */ | |
627 | ||
4ed3a9ea | 628 | memcpy (buffer, stop_registers, sizeof stop_registers); |
860a1754 | 629 | return 0; |
bd5635a1 RP |
630 | } |
631 | \f | |
632 | /* Proceed until we reach a different source line with pc greater than | |
633 | our current one or exit the function. We skip calls in both cases. | |
634 | ||
635 | Note that eventually this command should probably be changed so | |
636 | that only source lines are printed out when we hit the breakpoint | |
c6e0f918 JK |
637 | we set. This may involve changes to wait_for_inferior and the |
638 | proceed status code. */ | |
bd5635a1 | 639 | |
e1ce8aa5 | 640 | /* ARGSUSED */ |
1304f099 | 641 | static void |
bd5635a1 RP |
642 | until_next_command (from_tty) |
643 | int from_tty; | |
644 | { | |
3b55fbe3 | 645 | struct frame_info *frame; |
bd5635a1 RP |
646 | CORE_ADDR pc; |
647 | struct symbol *func; | |
648 | struct symtab_and_line sal; | |
649 | ||
650 | clear_proceed_status (); | |
651 | ||
652 | frame = get_current_frame (); | |
653 | ||
654 | /* Step until either exited from this function or greater | |
655 | than the current line (if in symbolic section) or pc (if | |
656 | not). */ | |
657 | ||
658 | pc = read_pc (); | |
659 | func = find_pc_function (pc); | |
660 | ||
661 | if (!func) | |
662 | { | |
1304f099 | 663 | struct minimal_symbol *msymbol = lookup_minimal_symbol_by_pc (pc); |
bd5635a1 | 664 | |
1304f099 | 665 | if (msymbol == NULL) |
bd5635a1 RP |
666 | error ("Execution is not within a known function."); |
667 | ||
2e4964ad | 668 | step_range_start = SYMBOL_VALUE_ADDRESS (msymbol); |
bd5635a1 RP |
669 | step_range_end = pc; |
670 | } | |
671 | else | |
672 | { | |
673 | sal = find_pc_line (pc, 0); | |
674 | ||
675 | step_range_start = BLOCK_START (SYMBOL_BLOCK_VALUE (func)); | |
676 | step_range_end = sal.end; | |
677 | } | |
678 | ||
679 | step_over_calls = 1; | |
680 | step_frame_address = FRAME_FP (frame); | |
16726dd1 JK |
681 | step_sp = read_sp (); |
682 | ||
bd5635a1 RP |
683 | step_multi = 0; /* Only one call to proceed */ |
684 | ||
c6e0f918 | 685 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 1); |
bd5635a1 RP |
686 | } |
687 | ||
1304f099 | 688 | static void |
bd5635a1 RP |
689 | until_command (arg, from_tty) |
690 | char *arg; | |
691 | int from_tty; | |
692 | { | |
693 | if (!target_has_execution) | |
694 | error ("The program is not running."); | |
695 | if (arg) | |
696 | until_break_command (arg, from_tty); | |
697 | else | |
698 | until_next_command (from_tty); | |
699 | } | |
700 | \f | |
701 | /* "finish": Set a temporary breakpoint at the place | |
702 | the selected frame will return to, then continue. */ | |
703 | ||
704 | static void | |
705 | finish_command (arg, from_tty) | |
706 | char *arg; | |
707 | int from_tty; | |
708 | { | |
709 | struct symtab_and_line sal; | |
3b55fbe3 | 710 | register struct frame_info *frame; |
bd5635a1 | 711 | register struct symbol *function; |
1304f099 JG |
712 | struct breakpoint *breakpoint; |
713 | struct cleanup *old_chain; | |
bd5635a1 RP |
714 | |
715 | if (arg) | |
716 | error ("The \"finish\" command does not take any arguments."); | |
717 | if (!target_has_execution) | |
718 | error ("The program is not running."); | |
777bef06 JK |
719 | if (selected_frame == NULL) |
720 | error ("No selected frame."); | |
bd5635a1 RP |
721 | |
722 | frame = get_prev_frame (selected_frame); | |
723 | if (frame == 0) | |
724 | error ("\"finish\" not meaningful in the outermost frame."); | |
725 | ||
726 | clear_proceed_status (); | |
727 | ||
3b55fbe3 JK |
728 | sal = find_pc_line (frame->pc, 0); |
729 | sal.pc = frame->pc; | |
1304f099 JG |
730 | |
731 | breakpoint = set_momentary_breakpoint (sal, frame, bp_finish); | |
732 | ||
4ef1f467 | 733 | old_chain = make_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint); |
bd5635a1 RP |
734 | |
735 | /* Find the function we will return from. */ | |
736 | ||
3b55fbe3 | 737 | function = find_pc_function (selected_frame->pc); |
bd5635a1 | 738 | |
ee0613d1 JG |
739 | /* Print info on the selected frame, including level number |
740 | but not source. */ | |
bd5635a1 RP |
741 | if (from_tty) |
742 | { | |
ee0613d1 JG |
743 | printf_filtered ("Run till exit from "); |
744 | print_stack_frame (selected_frame, selected_frame_level, 0); | |
bd5635a1 RP |
745 | } |
746 | ||
747 | proceed_to_finish = 1; /* We want stop_registers, please... */ | |
c6e0f918 | 748 | proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); |
bd5635a1 | 749 | |
1304f099 JG |
750 | /* Did we stop at our breakpoint? */ |
751 | if (bpstat_find_breakpoint(stop_bpstat, breakpoint) != NULL | |
752 | && function != 0) | |
bd5635a1 RP |
753 | { |
754 | struct type *value_type; | |
9f577285 | 755 | register value_ptr val; |
bd5635a1 RP |
756 | CORE_ADDR funcaddr; |
757 | ||
758 | value_type = TYPE_TARGET_TYPE (SYMBOL_TYPE (function)); | |
759 | if (!value_type) | |
760 | fatal ("internal: finish_command: function has no target type"); | |
761 | ||
762 | if (TYPE_CODE (value_type) == TYPE_CODE_VOID) | |
763 | return; | |
764 | ||
765 | funcaddr = BLOCK_START (SYMBOL_BLOCK_VALUE (function)); | |
766 | ||
767 | val = value_being_returned (value_type, stop_registers, | |
860a1754 | 768 | using_struct_return (value_of_variable (function, NULL), |
bd5635a1 | 769 | funcaddr, |
e02a2ad9 | 770 | check_typedef (value_type), |
bd5635a1 RP |
771 | BLOCK_GCC_COMPILED (SYMBOL_BLOCK_VALUE (function)))); |
772 | ||
ee0613d1 | 773 | printf_filtered ("Value returned is $%d = ", record_latest_value (val)); |
199b2450 | 774 | value_print (val, gdb_stdout, 0, Val_no_prettyprint); |
ee0613d1 | 775 | printf_filtered ("\n"); |
bd5635a1 | 776 | } |
1304f099 | 777 | do_cleanups(old_chain); |
bd5635a1 RP |
778 | } |
779 | \f | |
e1ce8aa5 | 780 | /* ARGSUSED */ |
bd5635a1 RP |
781 | static void |
782 | program_info (args, from_tty) | |
783 | char *args; | |
784 | int from_tty; | |
785 | { | |
786 | bpstat bs = stop_bpstat; | |
787 | int num = bpstat_num (&bs); | |
788 | ||
789 | if (!target_has_execution) | |
790 | { | |
1304f099 | 791 | printf_filtered ("The program being debugged is not being run.\n"); |
bd5635a1 RP |
792 | return; |
793 | } | |
794 | ||
795 | target_files_info (); | |
5573d7d4 JK |
796 | printf_filtered ("Program stopped at %s.\n", |
797 | local_hex_string((unsigned long) stop_pc)); | |
bd5635a1 | 798 | if (stop_step) |
1304f099 | 799 | printf_filtered ("It stopped after being stepped.\n"); |
bd5635a1 RP |
800 | else if (num != 0) |
801 | { | |
802 | /* There may be several breakpoints in the same place, so this | |
803 | isn't as strange as it seems. */ | |
804 | while (num != 0) | |
805 | { | |
806 | if (num < 0) | |
1304f099 | 807 | printf_filtered ("It stopped at a breakpoint that has since been deleted.\n"); |
bd5635a1 | 808 | else |
1304f099 | 809 | printf_filtered ("It stopped at breakpoint %d.\n", num); |
bd5635a1 RP |
810 | num = bpstat_num (&bs); |
811 | } | |
812 | } | |
67ac9759 | 813 | else if (stop_signal != TARGET_SIGNAL_0) |
de6a2704 | 814 | { |
67ac9759 JK |
815 | printf_filtered ("It stopped with signal %s, %s.\n", |
816 | target_signal_to_name (stop_signal), | |
817 | target_signal_to_string (stop_signal)); | |
818 | } | |
bd5635a1 RP |
819 | |
820 | if (!from_tty) | |
1304f099 | 821 | printf_filtered ("Type \"info stack\" or \"info registers\" for more information.\n"); |
bd5635a1 RP |
822 | } |
823 | \f | |
824 | static void | |
1304f099 | 825 | environment_info (var, from_tty) |
bd5635a1 | 826 | char *var; |
1304f099 | 827 | int from_tty; |
bd5635a1 RP |
828 | { |
829 | if (var) | |
830 | { | |
831 | register char *val = get_in_environ (inferior_environ, var); | |
832 | if (val) | |
631f7a9f JG |
833 | { |
834 | puts_filtered (var); | |
835 | puts_filtered (" = "); | |
836 | puts_filtered (val); | |
837 | puts_filtered ("\n"); | |
838 | } | |
bd5635a1 | 839 | else |
631f7a9f JG |
840 | { |
841 | puts_filtered ("Environment variable \""); | |
842 | puts_filtered (var); | |
843 | puts_filtered ("\" not defined.\n"); | |
844 | } | |
bd5635a1 RP |
845 | } |
846 | else | |
847 | { | |
848 | register char **vector = environ_vector (inferior_environ); | |
849 | while (*vector) | |
631f7a9f JG |
850 | { |
851 | puts_filtered (*vector++); | |
852 | puts_filtered ("\n"); | |
853 | } | |
bd5635a1 RP |
854 | } |
855 | } | |
856 | ||
857 | static void | |
1304f099 | 858 | set_environment_command (arg, from_tty) |
bd5635a1 | 859 | char *arg; |
1304f099 | 860 | int from_tty; |
bd5635a1 RP |
861 | { |
862 | register char *p, *val, *var; | |
863 | int nullset = 0; | |
864 | ||
865 | if (arg == 0) | |
866 | error_no_arg ("environment variable and value"); | |
867 | ||
868 | /* Find seperation between variable name and value */ | |
869 | p = (char *) strchr (arg, '='); | |
870 | val = (char *) strchr (arg, ' '); | |
871 | ||
872 | if (p != 0 && val != 0) | |
873 | { | |
874 | /* We have both a space and an equals. If the space is before the | |
631f7a9f JG |
875 | equals, walk forward over the spaces til we see a nonspace |
876 | (possibly the equals). */ | |
bd5635a1 RP |
877 | if (p > val) |
878 | while (*val == ' ') | |
879 | val++; | |
880 | ||
631f7a9f JG |
881 | /* Now if the = is after the char following the spaces, |
882 | take the char following the spaces. */ | |
883 | if (p > val) | |
b5a3d2aa | 884 | p = val - 1; |
bd5635a1 RP |
885 | } |
886 | else if (val != 0 && p == 0) | |
887 | p = val; | |
888 | ||
889 | if (p == arg) | |
890 | error_no_arg ("environment variable to set"); | |
891 | ||
892 | if (p == 0 || p[1] == 0) | |
893 | { | |
894 | nullset = 1; | |
895 | if (p == 0) | |
896 | p = arg + strlen (arg); /* So that savestring below will work */ | |
897 | } | |
898 | else | |
899 | { | |
900 | /* Not setting variable value to null */ | |
901 | val = p + 1; | |
902 | while (*val == ' ' || *val == '\t') | |
903 | val++; | |
904 | } | |
905 | ||
906 | while (p != arg && (p[-1] == ' ' || p[-1] == '\t')) p--; | |
907 | ||
908 | var = savestring (arg, p - arg); | |
909 | if (nullset) | |
910 | { | |
1304f099 | 911 | printf_filtered ("Setting environment variable \"%s\" to null value.\n", var); |
bd5635a1 RP |
912 | set_in_environ (inferior_environ, var, ""); |
913 | } | |
914 | else | |
915 | set_in_environ (inferior_environ, var, val); | |
916 | free (var); | |
917 | } | |
918 | ||
919 | static void | |
920 | unset_environment_command (var, from_tty) | |
921 | char *var; | |
922 | int from_tty; | |
923 | { | |
924 | if (var == 0) | |
925 | { | |
926 | /* If there is no argument, delete all environment variables. | |
927 | Ask for confirmation if reading from the terminal. */ | |
928 | if (!from_tty || query ("Delete all environment variables? ")) | |
929 | { | |
930 | free_environ (inferior_environ); | |
931 | inferior_environ = make_environ (); | |
932 | } | |
933 | } | |
934 | else | |
935 | unset_in_environ (inferior_environ, var); | |
936 | } | |
937 | ||
938 | /* Handle the execution path (PATH variable) */ | |
939 | ||
a8a69e63 | 940 | static const char path_var_name[] = "PATH"; |
bd5635a1 | 941 | |
e1ce8aa5 | 942 | /* ARGSUSED */ |
1304f099 | 943 | static void |
bd5635a1 RP |
944 | path_info (args, from_tty) |
945 | char *args; | |
946 | int from_tty; | |
947 | { | |
b5a3d2aa SG |
948 | puts_filtered ("Executable and object file path: "); |
949 | puts_filtered (get_in_environ (inferior_environ, path_var_name)); | |
950 | puts_filtered ("\n"); | |
bd5635a1 RP |
951 | } |
952 | ||
953 | /* Add zero or more directories to the front of the execution path. */ | |
954 | ||
1304f099 | 955 | static void |
bd5635a1 RP |
956 | path_command (dirname, from_tty) |
957 | char *dirname; | |
958 | int from_tty; | |
959 | { | |
960 | char *exec_path; | |
e02a2ad9 | 961 | char *env; |
bd5635a1 | 962 | dont_repeat (); |
e02a2ad9 SC |
963 | env = get_in_environ (inferior_environ, path_var_name); |
964 | /* Can be null if path is not set */ | |
965 | if (!env) | |
966 | env = ""; | |
967 | exec_path = strsave (env); | |
e1ce8aa5 | 968 | mod_path (dirname, &exec_path); |
bd5635a1 RP |
969 | set_in_environ (inferior_environ, path_var_name, exec_path); |
970 | free (exec_path); | |
971 | if (from_tty) | |
e1ce8aa5 | 972 | path_info ((char *)NULL, from_tty); |
bd5635a1 RP |
973 | } |
974 | \f | |
4ef1f467 DT |
975 | #ifdef REGISTER_NAMES |
976 | char *gdb_register_names[] = REGISTER_NAMES; | |
977 | #endif | |
bd5635a1 | 978 | /* Print out the machine register regnum. If regnum is -1, |
ee0613d1 JG |
979 | print all registers (fpregs == 1) or all non-float registers |
980 | (fpregs == 0). | |
981 | ||
bd5635a1 RP |
982 | For most machines, having all_registers_info() print the |
983 | register(s) one per line is good enough. If a different format | |
ee0613d1 | 984 | is required, (eg, for MIPS or Pyramid 90x, which both have |
bd5635a1 | 985 | lots of regs), or there is an existing convention for showing |
ee0613d1 | 986 | all the registers, define the macro DO_REGISTERS_INFO(regnum, fp) |
bd5635a1 | 987 | to provide that format. */ |
ee0613d1 | 988 | |
bd5635a1 | 989 | #if !defined (DO_REGISTERS_INFO) |
16726dd1 | 990 | |
ee0613d1 | 991 | #define DO_REGISTERS_INFO(regnum, fp) do_registers_info(regnum, fp) |
16726dd1 | 992 | |
ee0613d1 JG |
993 | static void |
994 | do_registers_info (regnum, fpregs) | |
bd5635a1 | 995 | int regnum; |
ee0613d1 | 996 | int fpregs; |
bd5635a1 RP |
997 | { |
998 | register int i; | |
16726dd1 | 999 | int numregs = ARCH_NUM_REGS; |
bd5635a1 | 1000 | |
16726dd1 | 1001 | for (i = 0; i < numregs; i++) |
bd5635a1 RP |
1002 | { |
1003 | char raw_buffer[MAX_REGISTER_RAW_SIZE]; | |
1004 | char virtual_buffer[MAX_REGISTER_VIRTUAL_SIZE]; | |
1005 | ||
ee0613d1 JG |
1006 | /* Decide between printing all regs, nonfloat regs, or specific reg. */ |
1007 | if (regnum == -1) { | |
1008 | if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT && !fpregs) | |
1009 | continue; | |
1010 | } else { | |
1011 | if (i != regnum) | |
1012 | continue; | |
1013 | } | |
bd5635a1 | 1014 | |
00dd4fd9 SS |
1015 | /* If the register name is empty, it is undefined for this |
1016 | processor, so don't display anything. */ | |
4ef1f467 | 1017 | if (REGISTER_NAME (i) == NULL || *(REGISTER_NAME (i)) == '\0') |
00dd4fd9 SS |
1018 | continue; |
1019 | ||
4ef1f467 DT |
1020 | fputs_filtered (REGISTER_NAME (i), gdb_stdout); |
1021 | print_spaces_filtered (15 - strlen (REGISTER_NAME (i)), gdb_stdout); | |
bd5635a1 | 1022 | |
67ac9759 | 1023 | /* Get the data in raw format. */ |
bd5635a1 RP |
1024 | if (read_relative_register_raw_bytes (i, raw_buffer)) |
1025 | { | |
4ef1f467 | 1026 | printf_filtered ("*value not available*\n"); |
bd5635a1 RP |
1027 | continue; |
1028 | } | |
67ac9759 JK |
1029 | |
1030 | /* Convert raw data to virtual format if necessary. */ | |
1031 | #ifdef REGISTER_CONVERTIBLE | |
1032 | if (REGISTER_CONVERTIBLE (i)) | |
1033 | { | |
1034 | REGISTER_CONVERT_TO_VIRTUAL (i, REGISTER_VIRTUAL_TYPE (i), | |
1035 | raw_buffer, virtual_buffer); | |
1036 | } | |
1037 | else | |
1038 | #endif | |
1039 | memcpy (virtual_buffer, raw_buffer, | |
1040 | REGISTER_VIRTUAL_SIZE (i)); | |
bd5635a1 RP |
1041 | |
1042 | /* If virtual format is floating, print it that way, and in raw hex. */ | |
16726dd1 | 1043 | if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i)) == TYPE_CODE_FLT) |
bd5635a1 RP |
1044 | { |
1045 | register int j; | |
1046 | ||
16726dd1 JK |
1047 | #ifdef INVALID_FLOAT |
1048 | if (INVALID_FLOAT (virtual_buffer, REGISTER_VIRTUAL_SIZE (i))) | |
1049 | printf_filtered ("<invalid float>"); | |
1050 | else | |
1051 | #endif | |
4ef1f467 | 1052 | val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0, |
16726dd1 | 1053 | gdb_stdout, 0, 1, 0, Val_pretty_default); |
bd5635a1 RP |
1054 | |
1055 | printf_filtered ("\t(raw 0x"); | |
1056 | for (j = 0; j < REGISTER_RAW_SIZE (i); j++) | |
b607efe7 FF |
1057 | { |
1058 | register int idx = TARGET_BYTE_ORDER == BIG_ENDIAN ? j | |
1059 | : REGISTER_RAW_SIZE (i) - 1 - j; | |
1060 | printf_filtered ("%02x", (unsigned char)raw_buffer[idx]); | |
1061 | } | |
bd5635a1 RP |
1062 | printf_filtered (")"); |
1063 | } | |
1064 | ||
1065 | /* FIXME! val_print probably can handle all of these cases now... */ | |
1066 | ||
1067 | /* Else if virtual format is too long for printf, | |
1068 | print in hex a byte at a time. */ | |
b52cac6b | 1069 | else if (REGISTER_VIRTUAL_SIZE (i) > (int) sizeof (long)) |
bd5635a1 RP |
1070 | { |
1071 | register int j; | |
1072 | printf_filtered ("0x"); | |
1073 | for (j = 0; j < REGISTER_VIRTUAL_SIZE (i); j++) | |
1074 | printf_filtered ("%02x", (unsigned char)virtual_buffer[j]); | |
1075 | } | |
1076 | /* Else print as integer in hex and in decimal. */ | |
1077 | else | |
1078 | { | |
4ef1f467 | 1079 | val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0, |
199b2450 | 1080 | gdb_stdout, 'x', 1, 0, Val_pretty_default); |
bd5635a1 | 1081 | printf_filtered ("\t"); |
4ef1f467 | 1082 | val_print (REGISTER_VIRTUAL_TYPE (i), virtual_buffer, 0, 0, |
199b2450 | 1083 | gdb_stdout, 0, 1, 0, Val_pretty_default); |
bd5635a1 RP |
1084 | } |
1085 | ||
1086 | /* The SPARC wants to print even-numbered float regs as doubles | |
1087 | in addition to printing them as floats. */ | |
1088 | #ifdef PRINT_REGISTER_HOOK | |
1089 | PRINT_REGISTER_HOOK (i); | |
1090 | #endif | |
1091 | ||
1092 | printf_filtered ("\n"); | |
1093 | } | |
1094 | } | |
1095 | #endif /* no DO_REGISTERS_INFO. */ | |
1096 | ||
4ef1f467 DT |
1097 | extern int target_map_name_to_register PARAMS ((char *, int)); |
1098 | ||
1099 | void | |
ee0613d1 | 1100 | registers_info (addr_exp, fpregs) |
bd5635a1 | 1101 | char *addr_exp; |
ee0613d1 | 1102 | int fpregs; |
bd5635a1 | 1103 | { |
16726dd1 | 1104 | int regnum, numregs; |
b5a3d2aa | 1105 | register char *end; |
bd5635a1 RP |
1106 | |
1107 | if (!target_has_registers) | |
1108 | error ("The program has no registers now."); | |
e02a2ad9 SC |
1109 | if (selected_frame == NULL) |
1110 | error ("No selected frame."); | |
bd5635a1 | 1111 | |
b5a3d2aa | 1112 | if (!addr_exp) |
bd5635a1 | 1113 | { |
b5a3d2aa SG |
1114 | DO_REGISTERS_INFO(-1, fpregs); |
1115 | return; | |
bd5635a1 | 1116 | } |
bd5635a1 | 1117 | |
b5a3d2aa SG |
1118 | do |
1119 | { | |
1120 | if (addr_exp[0] == '$') | |
1121 | addr_exp++; | |
1122 | end = addr_exp; | |
1123 | while (*end != '\0' && *end != ' ' && *end != '\t') | |
1124 | ++end; | |
16726dd1 | 1125 | numregs = ARCH_NUM_REGS; |
4ef1f467 DT |
1126 | |
1127 | regnum = target_map_name_to_register (addr_exp, end - addr_exp); | |
1128 | if (regnum >= 0) | |
1129 | goto found; | |
1130 | ||
1131 | regnum = numregs; | |
1132 | ||
b5a3d2aa SG |
1133 | if (*addr_exp >= '0' && *addr_exp <= '9') |
1134 | regnum = atoi (addr_exp); /* Take a number */ | |
16726dd1 | 1135 | if (regnum >= numregs) /* Bad name, or bad number */ |
b5a3d2aa SG |
1136 | error ("%.*s: invalid register", end - addr_exp, addr_exp); |
1137 | ||
1138 | found: | |
1139 | DO_REGISTERS_INFO(regnum, fpregs); | |
1140 | ||
1141 | addr_exp = end; | |
1142 | while (*addr_exp == ' ' || *addr_exp == '\t') | |
1143 | ++addr_exp; | |
1144 | } while (*addr_exp != '\0'); | |
ee0613d1 JG |
1145 | } |
1146 | ||
4ef1f467 | 1147 | void |
1304f099 | 1148 | all_registers_info (addr_exp, from_tty) |
ee0613d1 | 1149 | char *addr_exp; |
1304f099 | 1150 | int from_tty; |
ee0613d1 JG |
1151 | { |
1152 | registers_info (addr_exp, 1); | |
1153 | } | |
1154 | ||
4ef1f467 | 1155 | void |
1304f099 | 1156 | nofp_registers_info (addr_exp, from_tty) |
ee0613d1 | 1157 | char *addr_exp; |
1304f099 | 1158 | int from_tty; |
ee0613d1 JG |
1159 | { |
1160 | registers_info (addr_exp, 0); | |
bd5635a1 | 1161 | } |
4ef1f467 | 1162 | |
bd5635a1 RP |
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 | { | |
b607efe7 | 1185 | #ifdef SOLIB_ADD |
00dd4fd9 | 1186 | extern int auto_solib_add; |
b607efe7 | 1187 | #endif |
e02a2ad9 | 1188 | |
f266e564 | 1189 | dont_repeat (); /* Not for the faint of heart */ |
b5a3d2aa SG |
1190 | |
1191 | if (target_has_execution) | |
1192 | { | |
1193 | if (query ("A program is being debugged already. Kill it? ")) | |
1194 | target_kill (); | |
1195 | else | |
b1b4a89e | 1196 | error ("Not killed."); |
b5a3d2aa SG |
1197 | } |
1198 | ||
bd5635a1 | 1199 | target_attach (args, from_tty); |
b5a3d2aa SG |
1200 | |
1201 | /* Set up the "saved terminal modes" of the inferior | |
1202 | based on what modes we are starting it with. */ | |
1203 | target_terminal_init (); | |
1204 | ||
1205 | /* Install inferior's terminal modes. */ | |
1206 | target_terminal_inferior (); | |
1207 | ||
1208 | /* Set up execution context to know that we should return from | |
1209 | wait_for_inferior as soon as the target reports a stop. */ | |
1210 | init_wait_for_inferior (); | |
1211 | clear_proceed_status (); | |
1212 | stop_soon_quietly = 1; | |
1213 | ||
39ce6829 PS |
1214 | /* No traps are generated when attaching to inferior under Mach 3 |
1215 | or GNU hurd. */ | |
1216 | #ifndef ATTACH_NO_WAIT | |
b5a3d2aa | 1217 | wait_for_inferior (); |
9f577285 | 1218 | #endif |
b5a3d2aa SG |
1219 | |
1220 | #ifdef SOLIB_ADD | |
00dd4fd9 | 1221 | if (auto_solib_add) |
b52cac6b FF |
1222 | { |
1223 | /* Add shared library symbols from the newly attached process, if any. */ | |
1224 | SOLIB_ADD ((char *)0, from_tty, (struct target_ops *)0); | |
1225 | re_enable_breakpoints_in_shlibs (); | |
1226 | } | |
b5a3d2aa SG |
1227 | #endif |
1228 | ||
1229 | normal_stop (); | |
bd5635a1 RP |
1230 | } |
1231 | ||
1232 | /* | |
1233 | * detach_command -- | |
1234 | * takes a program previously attached to and detaches it. | |
1235 | * The program resumes execution and will no longer stop | |
1236 | * on signals, etc. We better not have left any breakpoints | |
1237 | * in the program or it'll die when it hits one. For this | |
1238 | * to work, it may be necessary for the process to have been | |
1239 | * previously attached. It *might* work if the program was | |
1240 | * started via the normal ptrace (PTRACE_TRACEME). | |
1241 | */ | |
1242 | ||
1243 | static void | |
1244 | detach_command (args, from_tty) | |
1245 | char *args; | |
1246 | int from_tty; | |
1247 | { | |
f266e564 | 1248 | dont_repeat (); /* Not for the faint of heart */ |
bd5635a1 RP |
1249 | target_detach (args, from_tty); |
1250 | } | |
1251 | ||
1252 | /* ARGSUSED */ | |
1253 | static void | |
1304f099 | 1254 | float_info (addr_exp, from_tty) |
bd5635a1 | 1255 | char *addr_exp; |
1304f099 | 1256 | int from_tty; |
bd5635a1 RP |
1257 | { |
1258 | #ifdef FLOAT_INFO | |
1259 | FLOAT_INFO; | |
1260 | #else | |
1304f099 | 1261 | printf_filtered ("No floating point info available for this processor.\n"); |
bd5635a1 RP |
1262 | #endif |
1263 | } | |
1264 | \f | |
f266e564 JK |
1265 | /* ARGSUSED */ |
1266 | static void | |
1267 | unset_command (args, from_tty) | |
1268 | char *args; | |
1269 | int from_tty; | |
1270 | { | |
1304f099 | 1271 | printf_filtered ("\"unset\" must be followed by the name of an unset subcommand.\n"); |
199b2450 | 1272 | help_list (unsetlist, "unset ", -1, gdb_stdout); |
f266e564 JK |
1273 | } |
1274 | ||
bd5635a1 RP |
1275 | void |
1276 | _initialize_infcmd () | |
1277 | { | |
1278 | struct cmd_list_element *c; | |
1279 | ||
1280 | add_com ("tty", class_run, tty_command, | |
1281 | "Set terminal for future runs of program being debugged."); | |
1282 | ||
1283 | add_show_from_set | |
1284 | (add_set_cmd ("args", class_run, var_string_noescape, (char *)&inferior_args, | |
1285 | ||
4ef1f467 | 1286 | "Set argument list to give program being debugged when it is started.\n\ |
bd5635a1 RP |
1287 | Follow this command with any number of args, to be passed to the program.", |
1288 | &setlist), | |
1289 | &showlist); | |
1290 | ||
1291 | c = add_cmd | |
1292 | ("environment", no_class, environment_info, | |
1293 | "The environment to give the program, or one variable's value.\n\ | |
1294 | With an argument VAR, prints the value of environment variable VAR to\n\ | |
1295 | give the program being debugged. With no arguments, prints the entire\n\ | |
1296 | environment to be given to the program.", &showlist); | |
1297 | c->completer = noop_completer; | |
1298 | ||
f266e564 JK |
1299 | add_prefix_cmd ("unset", no_class, unset_command, |
1300 | "Complement to certain \"set\" commands", | |
1301 | &unsetlist, "unset ", 0, &cmdlist); | |
1302 | ||
bd5635a1 RP |
1303 | c = add_cmd ("environment", class_run, unset_environment_command, |
1304 | "Cancel environment variable VAR for the program.\n\ | |
1305 | This does not affect the program until the next \"run\" command.", | |
f266e564 | 1306 | &unsetlist); |
bd5635a1 RP |
1307 | c->completer = noop_completer; |
1308 | ||
1309 | c = add_cmd ("environment", class_run, set_environment_command, | |
1310 | "Set environment variable value to give the program.\n\ | |
1311 | Arguments are VAR VALUE where VAR is variable name and VALUE is value.\n\ | |
1312 | VALUES of environment variables are uninterpreted strings.\n\ | |
1313 | This does not affect the program until the next \"run\" command.", | |
1314 | &setlist); | |
1315 | c->completer = noop_completer; | |
1316 | ||
1317 | add_com ("path", class_files, path_command, | |
1318 | "Add directory DIR(s) to beginning of search path for object files.\n\ | |
1319 | $cwd in the path means the current working directory.\n\ | |
1320 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
1321 | directories, separated by colons. These directories are searched to find\n\ | |
1322 | fully linked executable files and separately compiled object files as needed."); | |
1323 | ||
ee0613d1 | 1324 | c = add_cmd ("paths", no_class, path_info, |
bd5635a1 RP |
1325 | "Current search path for finding object files.\n\ |
1326 | $cwd in the path means the current working directory.\n\ | |
1327 | This path is equivalent to the $PATH shell variable. It is a list of\n\ | |
1328 | directories, separated by colons. These directories are searched to find\n\ | |
ee0613d1 JG |
1329 | fully linked executable files and separately compiled object files as needed.", &showlist); |
1330 | c->completer = noop_completer; | |
bd5635a1 RP |
1331 | |
1332 | add_com ("attach", class_run, attach_command, | |
1333 | "Attach to a process or file outside of GDB.\n\ | |
1334 | This command attaches to another target, of the same type as your last\n\ | |
1335 | `target' command (`info files' will show your target stack).\n\ | |
1336 | The command may take as argument a process id or a device file.\n\ | |
1337 | For a process id, you must have permission to send the process a signal,\n\ | |
1338 | and it must have the same effective uid as the debugger.\n\ | |
1339 | When using \"attach\", you should use the \"file\" command to specify\n\ | |
1340 | the program running in the process, and to load its symbol table."); | |
1341 | ||
1342 | add_com ("detach", class_run, detach_command, | |
1343 | "Detach a process or file previously attached.\n\ | |
1344 | If a process, it is no longer traced, and it continues its execution. If you\n\ | |
1345 | were debugging a file, the file is closed and gdb no longer accesses it."); | |
1346 | ||
1347 | add_com ("signal", class_run, signal_command, | |
3b55fbe3 JK |
1348 | "Continue program giving it signal specified by the argument.\n\ |
1349 | An argument of \"0\" means continue program without giving it a signal."); | |
bd5635a1 RP |
1350 | |
1351 | add_com ("stepi", class_run, stepi_command, | |
1352 | "Step one instruction exactly.\n\ | |
1353 | Argument N means do this N times (or till program stops for another reason)."); | |
1354 | add_com_alias ("si", "stepi", class_alias, 0); | |
1355 | ||
1356 | add_com ("nexti", class_run, nexti_command, | |
1357 | "Step one instruction, but proceed through subroutine calls.\n\ | |
1358 | Argument N means do this N times (or till program stops for another reason)."); | |
1359 | add_com_alias ("ni", "nexti", class_alias, 0); | |
1360 | ||
1361 | add_com ("finish", class_run, finish_command, | |
1362 | "Execute until selected stack frame returns.\n\ | |
1363 | Upon return, the value returned is printed and put in the value history."); | |
1364 | ||
1365 | add_com ("next", class_run, next_command, | |
1366 | "Step program, proceeding through subroutine calls.\n\ | |
1367 | Like the \"step\" command as long as subroutine calls do not happen;\n\ | |
1368 | when they do, the call is treated as one instruction.\n\ | |
1369 | Argument N means do this N times (or till program stops for another reason)."); | |
1370 | add_com_alias ("n", "next", class_run, 1); | |
1371 | ||
1372 | add_com ("step", class_run, step_command, | |
1373 | "Step program until it reaches a different source line.\n\ | |
1374 | Argument N means do this N times (or till program stops for another reason)."); | |
1375 | add_com_alias ("s", "step", class_run, 1); | |
1376 | ||
1377 | add_com ("until", class_run, until_command, | |
1378 | "Execute until the program reaches a source line greater than the current\n\ | |
1379 | or a specified line or address or function (same args as break command).\n\ | |
1380 | Execution will also stop upon exit from the current stack frame."); | |
1381 | add_com_alias ("u", "until", class_run, 1); | |
1382 | ||
1383 | add_com ("jump", class_run, jump_command, | |
1384 | "Continue program being debugged at specified line or address.\n\ | |
1385 | Give as argument either LINENUM or *ADDR, where ADDR is an expression\n\ | |
1386 | for an address to start at."); | |
1387 | ||
1388 | add_com ("continue", class_run, continue_command, | |
1389 | "Continue program being debugged, after signal or breakpoint.\n\ | |
de6a2704 JK |
1390 | If proceeding from breakpoint, a number N may be used as an argument,\n\ |
1391 | which means to set the ignore count of that breakpoint to N - 1 (so that\n\ | |
1392 | the breakpoint won't break until the Nth time it is reached)."); | |
bd5635a1 RP |
1393 | add_com_alias ("c", "cont", class_run, 1); |
1394 | add_com_alias ("fg", "cont", class_run, 1); | |
1395 | ||
1396 | add_com ("run", class_run, run_command, | |
1397 | "Start debugged program. You may specify arguments to give it.\n\ | |
1398 | Args may include \"*\", or \"[...]\"; they are expanded using \"sh\".\n\ | |
1399 | Input and output redirection with \">\", \"<\", or \">>\" are also allowed.\n\n\ | |
b4fde6fa | 1400 | With no arguments, uses arguments last specified (with \"run\" or \"set args\").\n\ |
bd5635a1 RP |
1401 | To cancel previous arguments and run with no arguments,\n\ |
1402 | use \"set args\" without arguments."); | |
1403 | add_com_alias ("r", "run", class_run, 1); | |
1404 | ||
ee0613d1 JG |
1405 | add_info ("registers", nofp_registers_info, |
1406 | "List of integer registers and their contents, for selected stack frame.\n\ | |
1407 | Register name as argument means describe only that register."); | |
1408 | ||
1409 | add_info ("all-registers", all_registers_info, | |
1410 | "List of all registers and their contents, for selected stack frame.\n\ | |
bd5635a1 RP |
1411 | Register name as argument means describe only that register."); |
1412 | ||
1413 | add_info ("program", program_info, | |
1414 | "Execution status of the program."); | |
1415 | ||
1416 | add_info ("float", float_info, | |
1417 | "Print the status of the floating point unit\n"); | |
1418 | ||
1419 | inferior_args = savestring ("", 1); /* Initially no args */ | |
1420 | inferior_environ = make_environ (); | |
1421 | init_environ (inferior_environ); | |
1422 | } |