Commit | Line | Data |
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bd5635a1 | 1 | /* Everything about breakpoints, for GDB. |
895cc8ab | 2 | Copyright 1986, 87, 89, 90, 91, 92, 93, 94, 95, 96, 97, 1998 |
9f577285 | 3 | Free Software Foundation, Inc. |
bd5635a1 RP |
4 | |
5 | This file is part of GDB. | |
6 | ||
bdbd5f50 | 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 |
bdbd5f50 JG |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. | |
bd5635a1 | 11 | |
bdbd5f50 | 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 | |
bdbd5f50 | 18 | along with this program; if not, write to the Free Software |
cd10c7e3 | 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
bd5635a1 | 20 | |
bd5635a1 | 21 | #include "defs.h" |
1eeba686 | 22 | #include <ctype.h> |
bd5635a1 RP |
23 | #include "symtab.h" |
24 | #include "frame.h" | |
25 | #include "breakpoint.h" | |
30875e1c | 26 | #include "gdbtypes.h" |
bd5635a1 RP |
27 | #include "expression.h" |
28 | #include "gdbcore.h" | |
29 | #include "gdbcmd.h" | |
30 | #include "value.h" | |
bd5635a1 RP |
31 | #include "command.h" |
32 | #include "inferior.h" | |
fdfa3315 | 33 | #include "gdbthread.h" |
bd5635a1 | 34 | #include "target.h" |
d3b9c0df | 35 | #include "language.h" |
2b576293 | 36 | #include "gdb_string.h" |
423e9664 | 37 | #include "demangle.h" |
9f577285 | 38 | #include "annotate.h" |
6b038bd9 DT |
39 | #include "symfile.h" |
40 | #include "objfiles.h" | |
bd5635a1 | 41 | |
92fb1f2e | 42 | /* Prototypes for local functions. */ |
30875e1c | 43 | |
92fb1f2e | 44 | static void catch_command_1 PARAMS ((char *, int, int)); |
30875e1c | 45 | |
92fb1f2e | 46 | static void enable_delete_command PARAMS ((char *, int)); |
30875e1c | 47 | |
92fb1f2e | 48 | static void enable_delete_breakpoint PARAMS ((struct breakpoint *)); |
30875e1c | 49 | |
92fb1f2e | 50 | static void enable_once_command PARAMS ((char *, int)); |
30875e1c | 51 | |
92fb1f2e | 52 | static void enable_once_breakpoint PARAMS ((struct breakpoint *)); |
30875e1c | 53 | |
92fb1f2e | 54 | static void disable_command PARAMS ((char *, int)); |
30875e1c | 55 | |
92fb1f2e | 56 | static void enable_command PARAMS ((char *, int)); |
30875e1c | 57 | |
92fb1f2e SS |
58 | static void map_breakpoint_numbers PARAMS ((char *, |
59 | void (*)(struct breakpoint *))); | |
30875e1c | 60 | |
92fb1f2e | 61 | static void ignore_command PARAMS ((char *, int)); |
30875e1c | 62 | |
92fb1f2e | 63 | static int breakpoint_re_set_one PARAMS ((char *)); |
30875e1c | 64 | |
92fb1f2e | 65 | static void clear_command PARAMS ((char *, int)); |
30875e1c | 66 | |
92fb1f2e | 67 | static void catch_command PARAMS ((char *, int)); |
30875e1c | 68 | |
92fb1f2e | 69 | static struct symtabs_and_lines get_catch_sals PARAMS ((int)); |
30875e1c | 70 | |
92fb1f2e | 71 | static void watch_command PARAMS ((char *, int)); |
30875e1c | 72 | |
92fb1f2e | 73 | static int can_use_hardware_watchpoint PARAMS ((struct value *)); |
999dd04b | 74 | |
92fb1f2e | 75 | static void tbreak_command PARAMS ((char *, int)); |
30875e1c | 76 | |
92fb1f2e | 77 | static void break_command_1 PARAMS ((char *, int, int)); |
30875e1c | 78 | |
92fb1f2e | 79 | static void mention PARAMS ((struct breakpoint *)); |
30875e1c | 80 | |
92fb1f2e | 81 | struct breakpoint *set_raw_breakpoint PARAMS ((struct symtab_and_line)); |
30875e1c | 82 | |
92fb1f2e | 83 | static void check_duplicates PARAMS ((CORE_ADDR, asection *)); |
30875e1c | 84 | |
92fb1f2e | 85 | static void describe_other_breakpoints PARAMS ((CORE_ADDR, asection *)); |
30875e1c | 86 | |
92fb1f2e | 87 | static void breakpoints_info PARAMS ((char *, int)); |
30875e1c | 88 | |
92fb1f2e | 89 | static void breakpoint_1 PARAMS ((int, int)); |
30875e1c | 90 | |
92fb1f2e | 91 | static bpstat bpstat_alloc PARAMS ((struct breakpoint *, bpstat)); |
30875e1c | 92 | |
92fb1f2e | 93 | static int breakpoint_cond_eval PARAMS ((char *)); |
30875e1c | 94 | |
92fb1f2e | 95 | static void cleanup_executing_breakpoints PARAMS ((PTR)); |
30875e1c | 96 | |
92fb1f2e | 97 | static void commands_command PARAMS ((char *, int)); |
30875e1c | 98 | |
92fb1f2e | 99 | static void condition_command PARAMS ((char *, int)); |
30875e1c | 100 | |
92fb1f2e | 101 | static int get_number PARAMS ((char **)); |
30875e1c | 102 | |
92fb1f2e | 103 | static int remove_breakpoint PARAMS ((struct breakpoint *)); |
30875e1c | 104 | |
92fb1f2e | 105 | static int print_it_normal PARAMS ((bpstat)); |
b607efe7 | 106 | |
92fb1f2e | 107 | static int watchpoint_check PARAMS ((char *)); |
b607efe7 | 108 | |
92fb1f2e | 109 | static int print_it_done PARAMS ((bpstat)); |
b607efe7 | 110 | |
92fb1f2e | 111 | static int print_it_noop PARAMS ((bpstat)); |
b607efe7 | 112 | |
92fb1f2e | 113 | static void maintenance_info_breakpoints PARAMS ((char *, int)); |
b607efe7 FF |
114 | |
115 | #ifdef GET_LONGJMP_TARGET | |
92fb1f2e | 116 | static void create_longjmp_breakpoint PARAMS ((char *)); |
b607efe7 FF |
117 | #endif |
118 | ||
92fb1f2e | 119 | static int hw_breakpoint_used_count PARAMS ((void)); |
b607efe7 | 120 | |
92fb1f2e | 121 | static int hw_watchpoint_used_count PARAMS ((enum bptype, int *)); |
b607efe7 | 122 | |
92fb1f2e | 123 | static void hbreak_command PARAMS ((char *, int)); |
b607efe7 | 124 | |
92fb1f2e | 125 | static void thbreak_command PARAMS ((char *, int)); |
b607efe7 | 126 | |
92fb1f2e | 127 | static void watch_command_1 PARAMS ((char *, int, int)); |
b607efe7 | 128 | |
92fb1f2e | 129 | static void rwatch_command PARAMS ((char *, int)); |
b607efe7 | 130 | |
92fb1f2e | 131 | static void awatch_command PARAMS ((char *, int)); |
b607efe7 | 132 | |
92fb1f2e SS |
133 | static void do_enable_breakpoint PARAMS ((struct breakpoint *, enum bpdisp)); |
134 | ||
135 | /* Prototypes for exported functions. */ | |
136 | ||
137 | void delete_command PARAMS ((char *, int)); | |
138 | ||
139 | void _initialize_breakpoint PARAMS ((void)); | |
140 | ||
141 | void set_breakpoint_count PARAMS ((int)); | |
b607efe7 | 142 | |
bd5635a1 | 143 | extern int addressprint; /* Print machine addresses? */ |
bd5635a1 | 144 | |
6b038bd9 DT |
145 | #if defined (GET_LONGJMP_TARGET) || defined (SOLIB_ADD) |
146 | static int internal_breakpoint_number = -1; | |
147 | #endif | |
148 | ||
bd5635a1 RP |
149 | /* Are we executing breakpoint commands? */ |
150 | static int executing_breakpoint_commands; | |
151 | ||
cba0d141 JG |
152 | /* Walk the following statement or block through all breakpoints. |
153 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
154 | breakpoint. */ | |
155 | ||
bd5635a1 RP |
156 | #define ALL_BREAKPOINTS(b) for (b = breakpoint_chain; b; b = b->next) |
157 | ||
cba0d141 JG |
158 | #define ALL_BREAKPOINTS_SAFE(b,tmp) \ |
159 | for (b = breakpoint_chain; \ | |
160 | b? (tmp=b->next, 1): 0; \ | |
161 | b = tmp) | |
162 | ||
6b038bd9 DT |
163 | /* True if SHIFT_INST_REGS defined, false otherwise. */ |
164 | ||
165 | int must_shift_inst_regs = | |
166 | #if defined(SHIFT_INST_REGS) | |
167 | 1 | |
168 | #else | |
169 | 0 | |
170 | #endif | |
171 | ; | |
172 | ||
9f577285 SS |
173 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ |
174 | ||
175 | int show_breakpoint_hit_counts = 1; | |
176 | ||
bd5635a1 RP |
177 | /* Chain of all breakpoints defined. */ |
178 | ||
e8bf33c4 | 179 | struct breakpoint *breakpoint_chain; |
bd5635a1 RP |
180 | |
181 | /* Number of last breakpoint made. */ | |
182 | ||
895cc8ab | 183 | int breakpoint_count; |
bd5635a1 RP |
184 | |
185 | /* Set breakpoint count to NUM. */ | |
9f577285 | 186 | |
895cc8ab | 187 | void |
bd5635a1 RP |
188 | set_breakpoint_count (num) |
189 | int num; | |
190 | { | |
191 | breakpoint_count = num; | |
192 | set_internalvar (lookup_internalvar ("bpnum"), | |
06b6c733 | 193 | value_from_longest (builtin_type_int, (LONGEST) num)); |
bd5635a1 RP |
194 | } |
195 | ||
9f577285 SS |
196 | /* Used in run_command to zero the hit count when a new run starts. */ |
197 | ||
198 | void | |
199 | clear_breakpoint_hit_counts () | |
200 | { | |
201 | struct breakpoint *b; | |
202 | ||
203 | ALL_BREAKPOINTS (b) | |
204 | b->hit_count = 0; | |
205 | } | |
206 | ||
bd5635a1 RP |
207 | /* Default address, symtab and line to put a breakpoint at |
208 | for "break" command with no arg. | |
209 | if default_breakpoint_valid is zero, the other three are | |
210 | not valid, and "break" with no arg is an error. | |
211 | ||
212 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
213 | ||
214 | int default_breakpoint_valid; | |
215 | CORE_ADDR default_breakpoint_address; | |
216 | struct symtab *default_breakpoint_symtab; | |
217 | int default_breakpoint_line; | |
bd5635a1 RP |
218 | \f |
219 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
220 | Advance *PP after the string and any trailing whitespace. | |
221 | ||
222 | Currently the string can either be a number or "$" followed by the name | |
223 | of a convenience variable. Making it an expression wouldn't work well | |
224 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). */ | |
225 | static int | |
226 | get_number (pp) | |
227 | char **pp; | |
228 | { | |
229 | int retval; | |
230 | char *p = *pp; | |
231 | ||
232 | if (p == NULL) | |
233 | /* Empty line means refer to the last breakpoint. */ | |
234 | return breakpoint_count; | |
235 | else if (*p == '$') | |
236 | { | |
237 | /* Make a copy of the name, so we can null-terminate it | |
238 | to pass to lookup_internalvar(). */ | |
239 | char *varname; | |
240 | char *start = ++p; | |
82a2edfb | 241 | value_ptr val; |
bd5635a1 RP |
242 | |
243 | while (isalnum (*p) || *p == '_') | |
244 | p++; | |
245 | varname = (char *) alloca (p - start + 1); | |
246 | strncpy (varname, start, p - start); | |
247 | varname[p - start] = '\0'; | |
248 | val = value_of_internalvar (lookup_internalvar (varname)); | |
249 | if (TYPE_CODE (VALUE_TYPE (val)) != TYPE_CODE_INT) | |
250 | error ( | |
251 | "Convenience variables used to specify breakpoints must have integer values." | |
252 | ); | |
253 | retval = (int) value_as_long (val); | |
254 | } | |
255 | else | |
256 | { | |
80ba48f5 SG |
257 | if (*p == '-') |
258 | ++p; | |
bd5635a1 RP |
259 | while (*p >= '0' && *p <= '9') |
260 | ++p; | |
261 | if (p == *pp) | |
262 | /* There is no number here. (e.g. "cond a == b"). */ | |
263 | error_no_arg ("breakpoint number"); | |
264 | retval = atoi (*pp); | |
265 | } | |
266 | if (!(isspace (*p) || *p == '\0')) | |
267 | error ("breakpoint number expected"); | |
268 | while (isspace (*p)) | |
269 | p++; | |
270 | *pp = p; | |
271 | return retval; | |
272 | } | |
273 | \f | |
274 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
275 | ||
276 | static void | |
277 | condition_command (arg, from_tty) | |
278 | char *arg; | |
279 | int from_tty; | |
280 | { | |
281 | register struct breakpoint *b; | |
282 | char *p; | |
283 | register int bnum; | |
284 | ||
285 | if (arg == 0) | |
286 | error_no_arg ("breakpoint number"); | |
287 | ||
288 | p = arg; | |
289 | bnum = get_number (&p); | |
290 | ||
291 | ALL_BREAKPOINTS (b) | |
292 | if (b->number == bnum) | |
293 | { | |
294 | if (b->cond) | |
295 | { | |
c8950965 | 296 | free ((PTR)b->cond); |
bd5635a1 RP |
297 | b->cond = 0; |
298 | } | |
299 | if (b->cond_string != NULL) | |
c8950965 | 300 | free ((PTR)b->cond_string); |
bd5635a1 RP |
301 | |
302 | if (*p == 0) | |
303 | { | |
304 | b->cond = 0; | |
305 | b->cond_string = NULL; | |
306 | if (from_tty) | |
423e9664 | 307 | printf_filtered ("Breakpoint %d now unconditional.\n", bnum); |
bd5635a1 RP |
308 | } |
309 | else | |
310 | { | |
311 | arg = p; | |
312 | /* I don't know if it matters whether this is the string the user | |
313 | typed in or the decompiled expression. */ | |
314 | b->cond_string = savestring (arg, strlen (arg)); | |
d3b9c0df | 315 | b->cond = parse_exp_1 (&arg, block_for_pc (b->address), 0); |
bd5635a1 RP |
316 | if (*arg) |
317 | error ("Junk at end of expression"); | |
318 | } | |
16726dd1 | 319 | breakpoints_changed (); |
bd5635a1 RP |
320 | return; |
321 | } | |
322 | ||
323 | error ("No breakpoint number %d.", bnum); | |
324 | } | |
325 | ||
bdbd5f50 | 326 | /* ARGSUSED */ |
bd5635a1 RP |
327 | static void |
328 | commands_command (arg, from_tty) | |
329 | char *arg; | |
330 | int from_tty; | |
331 | { | |
332 | register struct breakpoint *b; | |
333 | char *p; | |
334 | register int bnum; | |
335 | struct command_line *l; | |
336 | ||
337 | /* If we allowed this, we would have problems with when to | |
338 | free the storage, if we change the commands currently | |
339 | being read from. */ | |
340 | ||
341 | if (executing_breakpoint_commands) | |
342 | error ("Can't use the \"commands\" command among a breakpoint's commands."); | |
343 | ||
344 | p = arg; | |
345 | bnum = get_number (&p); | |
346 | if (p && *p) | |
347 | error ("Unexpected extra arguments following breakpoint number."); | |
348 | ||
349 | ALL_BREAKPOINTS (b) | |
350 | if (b->number == bnum) | |
351 | { | |
41756e56 FF |
352 | char tmpbuf[128]; |
353 | sprintf (tmpbuf, "Type commands for when breakpoint %d is hit, one per line.", bnum); | |
354 | l = read_command_lines (tmpbuf, from_tty); | |
bd5635a1 RP |
355 | free_command_lines (&b->commands); |
356 | b->commands = l; | |
6c803036 | 357 | breakpoints_changed (); |
bd5635a1 RP |
358 | return; |
359 | } | |
360 | error ("No breakpoint number %d.", bnum); | |
361 | } | |
362 | \f | |
31ef19fc JK |
363 | extern int memory_breakpoint_size; /* from mem-break.c */ |
364 | ||
365 | /* Like target_read_memory() but if breakpoints are inserted, return | |
30875e1c SG |
366 | the shadow contents instead of the breakpoints themselves. |
367 | ||
368 | Read "memory data" from whatever target or inferior we have. | |
369 | Returns zero if successful, errno value if not. EIO is used | |
370 | for address out of bounds. If breakpoints are inserted, returns | |
371 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
372 | ||
31ef19fc JK |
373 | int |
374 | read_memory_nobpt (memaddr, myaddr, len) | |
375 | CORE_ADDR memaddr; | |
376 | char *myaddr; | |
377 | unsigned len; | |
378 | { | |
379 | int status; | |
380 | struct breakpoint *b; | |
381 | ||
382 | if (memory_breakpoint_size < 0) | |
5af4f5f6 JK |
383 | /* No breakpoints on this machine. FIXME: This should be |
384 | dependent on the debugging target. Probably want | |
385 | target_insert_breakpoint to return a size, saying how many | |
386 | bytes of the shadow contents are used, or perhaps have | |
387 | something like target_xfer_shadow. */ | |
31ef19fc JK |
388 | return target_read_memory (memaddr, myaddr, len); |
389 | ||
390 | ALL_BREAKPOINTS (b) | |
391 | { | |
999dd04b JL |
392 | if (b->type == bp_watchpoint |
393 | || b->type == bp_hardware_watchpoint | |
11054881 KH |
394 | || b->type == bp_read_watchpoint |
395 | || b->type == bp_access_watchpoint | |
999dd04b | 396 | || !b->inserted) |
31ef19fc JK |
397 | continue; |
398 | else if (b->address + memory_breakpoint_size <= memaddr) | |
399 | /* The breakpoint is entirely before the chunk of memory | |
400 | we are reading. */ | |
401 | continue; | |
402 | else if (b->address >= memaddr + len) | |
403 | /* The breakpoint is entirely after the chunk of memory we | |
404 | are reading. */ | |
405 | continue; | |
406 | else | |
407 | { | |
408 | /* Copy the breakpoint from the shadow contents, and recurse | |
409 | for the things before and after. */ | |
410 | ||
411 | /* Addresses and length of the part of the breakpoint that | |
412 | we need to copy. */ | |
413 | CORE_ADDR membpt = b->address; | |
414 | unsigned int bptlen = memory_breakpoint_size; | |
415 | /* Offset within shadow_contents. */ | |
416 | int bptoffset = 0; | |
417 | ||
418 | if (membpt < memaddr) | |
419 | { | |
420 | /* Only copy the second part of the breakpoint. */ | |
421 | bptlen -= memaddr - membpt; | |
422 | bptoffset = memaddr - membpt; | |
423 | membpt = memaddr; | |
424 | } | |
425 | ||
426 | if (membpt + bptlen > memaddr + len) | |
427 | { | |
428 | /* Only copy the first part of the breakpoint. */ | |
429 | bptlen -= (membpt + bptlen) - (memaddr + len); | |
430 | } | |
431 | ||
4ed3a9ea FF |
432 | memcpy (myaddr + membpt - memaddr, |
433 | b->shadow_contents + bptoffset, bptlen); | |
31ef19fc JK |
434 | |
435 | if (membpt > memaddr) | |
436 | { | |
437 | /* Copy the section of memory before the breakpoint. */ | |
438 | status = read_memory_nobpt (memaddr, myaddr, membpt - memaddr); | |
439 | if (status != 0) | |
440 | return status; | |
441 | } | |
442 | ||
443 | if (membpt + bptlen < memaddr + len) | |
444 | { | |
445 | /* Copy the section of memory after the breakpoint. */ | |
446 | status = read_memory_nobpt | |
447 | (membpt + bptlen, | |
448 | myaddr + membpt + bptlen - memaddr, | |
449 | memaddr + len - (membpt + bptlen)); | |
450 | if (status != 0) | |
451 | return status; | |
452 | } | |
453 | return 0; | |
454 | } | |
455 | } | |
456 | /* Nothing overlaps. Just call read_memory_noerr. */ | |
457 | return target_read_memory (memaddr, myaddr, len); | |
458 | } | |
459 | \f | |
bd5635a1 RP |
460 | /* insert_breakpoints is used when starting or continuing the program. |
461 | remove_breakpoints is used when the program stops. | |
462 | Both return zero if successful, | |
463 | or an `errno' value if could not write the inferior. */ | |
464 | ||
465 | int | |
466 | insert_breakpoints () | |
467 | { | |
fa3764e2 | 468 | register struct breakpoint *b, *temp; |
bd5635a1 RP |
469 | int val = 0; |
470 | int disabled_breaks = 0; | |
471 | ||
fa3764e2 | 472 | ALL_BREAKPOINTS_SAFE (b, temp) |
30875e1c | 473 | if (b->type != bp_watchpoint |
999dd04b | 474 | && b->type != bp_hardware_watchpoint |
11054881 KH |
475 | && b->type != bp_read_watchpoint |
476 | && b->type != bp_access_watchpoint | |
bd5635a1 | 477 | && b->enable != disabled |
fa3764e2 | 478 | && b->enable != shlib_disabled |
bd5635a1 RP |
479 | && ! b->inserted |
480 | && ! b->duplicate) | |
481 | { | |
11054881 KH |
482 | if (b->type == bp_hardware_breakpoint) |
483 | val = target_insert_hw_breakpoint(b->address, b->shadow_contents); | |
484 | else | |
6b038bd9 DT |
485 | { |
486 | /* Check to see if breakpoint is in an overlay section; | |
487 | if so, we should set the breakpoint at the LMA address. | |
488 | Only if the section is currently mapped should we ALSO | |
489 | set a break at the VMA address. */ | |
490 | if (overlay_debugging && b->section && | |
491 | section_is_overlay (b->section)) | |
492 | { | |
493 | CORE_ADDR addr; | |
494 | ||
495 | addr = overlay_unmapped_address (b->address, b->section); | |
496 | val = target_insert_breakpoint (addr, b->shadow_contents); | |
497 | /* This would be the time to check val, to see if the | |
498 | breakpoint write to the load address succeeded. | |
499 | However, this might be an ordinary occurrance, eg. if | |
500 | the unmapped overlay is in ROM. */ | |
501 | val = 0; /* in case unmapped address failed */ | |
502 | if (section_is_mapped (b->section)) | |
503 | val = target_insert_breakpoint (b->address, | |
504 | b->shadow_contents); | |
505 | } | |
506 | else /* ordinary (non-overlay) address */ | |
507 | val = target_insert_breakpoint(b->address, b->shadow_contents); | |
508 | } | |
bd5635a1 RP |
509 | if (val) |
510 | { | |
511 | /* Can't set the breakpoint. */ | |
512 | #if defined (DISABLE_UNSETTABLE_BREAK) | |
513 | if (DISABLE_UNSETTABLE_BREAK (b->address)) | |
514 | { | |
515 | val = 0; | |
fa3764e2 | 516 | b->enable = shlib_disabled; |
bd5635a1 RP |
517 | if (!disabled_breaks) |
518 | { | |
05052b63 | 519 | target_terminal_ours_for_output (); |
199b2450 | 520 | fprintf_unfiltered (gdb_stderr, |
2d313932 | 521 | "Cannot insert breakpoint %d:\n", b->number); |
fa3764e2 | 522 | printf_filtered ("Temporarily disabling shared library breakpoints:\n"); |
bd5635a1 RP |
523 | } |
524 | disabled_breaks = 1; | |
525 | printf_filtered ("%d ", b->number); | |
526 | } | |
527 | else | |
528 | #endif | |
529 | { | |
05052b63 | 530 | target_terminal_ours_for_output (); |
199b2450 | 531 | fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number); |
d3b9c0df | 532 | #ifdef ONE_PROCESS_WRITETEXT |
199b2450 | 533 | fprintf_unfiltered (gdb_stderr, |
2d313932 | 534 | "The same program may be running in another process.\n"); |
d3b9c0df | 535 | #endif |
bd5635a1 RP |
536 | memory_error (val, b->address); /* which bombs us out */ |
537 | } | |
538 | } | |
539 | else | |
540 | b->inserted = 1; | |
541 | } | |
11054881 KH |
542 | else if ((b->type == bp_hardware_watchpoint || |
543 | b->type == bp_read_watchpoint || | |
544 | b->type == bp_access_watchpoint) | |
999dd04b JL |
545 | && b->enable == enabled |
546 | && ! b->inserted | |
547 | && ! b->duplicate) | |
548 | { | |
706dc3ce | 549 | struct frame_info *saved_frame; |
999dd04b JL |
550 | int saved_level, within_current_scope; |
551 | value_ptr mark = value_mark (); | |
552 | value_ptr v; | |
553 | ||
554 | /* Save the current frame and level so we can restore it after | |
555 | evaluating the watchpoint expression on its own frame. */ | |
556 | saved_frame = selected_frame; | |
557 | saved_level = selected_frame_level; | |
558 | ||
559 | /* Determine if the watchpoint is within scope. */ | |
560 | if (b->exp_valid_block == NULL) | |
561 | within_current_scope = 1; | |
562 | else | |
563 | { | |
6b038bd9 DT |
564 | struct frame_info *fi; |
565 | ||
566 | /* There might be no current frame at this moment if we are | |
567 | resuming from a step over a breakpoint. | |
568 | Set up current frame before trying to find the watchpoint | |
569 | frame. */ | |
570 | get_current_frame (); | |
571 | fi = find_frame_addr_in_frame_chain (b->watchpoint_frame); | |
706dc3ce | 572 | within_current_scope = (fi != NULL); |
999dd04b | 573 | if (within_current_scope) |
706dc3ce | 574 | select_frame (fi, -1); |
999dd04b JL |
575 | } |
576 | ||
577 | if (within_current_scope) | |
578 | { | |
579 | /* Evaluate the expression and cut the chain of values | |
580 | produced off from the value chain. */ | |
581 | v = evaluate_expression (b->exp); | |
582 | value_release_to_mark (mark); | |
583 | ||
584 | b->val_chain = v; | |
585 | b->inserted = 1; | |
586 | ||
587 | /* Look at each value on the value chain. */ | |
588 | for ( ; v; v=v->next) | |
589 | { | |
590 | /* If it's a memory location, then we must watch it. */ | |
591 | if (v->lval == lval_memory) | |
592 | { | |
11054881 | 593 | int addr, len, type; |
999dd04b JL |
594 | |
595 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
596 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
11054881 KH |
597 | type = 0; |
598 | if (b->type == bp_read_watchpoint) | |
599 | type = 1; | |
600 | else if (b->type == bp_access_watchpoint) | |
601 | type = 2; | |
602 | ||
603 | val = target_insert_watchpoint (addr, len, type); | |
999dd04b JL |
604 | if (val == -1) |
605 | { | |
606 | b->inserted = 0; | |
607 | break; | |
608 | } | |
609 | val = 0; | |
610 | } | |
611 | } | |
612 | /* Failure to insert a watchpoint on any memory value in the | |
613 | value chain brings us here. */ | |
614 | if (!b->inserted) | |
615 | warning ("Hardware watchpoint %d: Could not insert watchpoint\n", | |
616 | b->number); | |
617 | } | |
618 | else | |
619 | { | |
620 | printf_filtered ("\ | |
621 | Hardware watchpoint %d deleted because the program has left the block in\n\ | |
622 | which its expression is valid.\n", b->number); | |
623 | if (b->related_breakpoint) | |
6b038bd9 | 624 | b->related_breakpoint->disposition = del_at_next_stop; |
e51481f9 | 625 | b->disposition = del_at_next_stop; |
999dd04b JL |
626 | } |
627 | ||
628 | /* Restore the frame and level. */ | |
629 | select_frame (saved_frame, saved_level); | |
630 | } | |
bd5635a1 RP |
631 | if (disabled_breaks) |
632 | printf_filtered ("\n"); | |
633 | return val; | |
634 | } | |
635 | ||
999dd04b | 636 | |
bd5635a1 RP |
637 | int |
638 | remove_breakpoints () | |
639 | { | |
640 | register struct breakpoint *b; | |
641 | int val; | |
642 | ||
bd5635a1 | 643 | ALL_BREAKPOINTS (b) |
999dd04b JL |
644 | { |
645 | if (b->inserted) | |
646 | { | |
647 | val = remove_breakpoint (b); | |
648 | if (val != 0) | |
649 | return val; | |
650 | } | |
651 | } | |
652 | return 0; | |
653 | } | |
bd5635a1 | 654 | |
999dd04b JL |
655 | |
656 | static int | |
657 | remove_breakpoint (b) | |
658 | struct breakpoint *b; | |
659 | { | |
660 | int val; | |
661 | ||
662 | if (b->type != bp_watchpoint | |
11054881 KH |
663 | && b->type != bp_hardware_watchpoint |
664 | && b->type != bp_read_watchpoint | |
665 | && b->type != bp_access_watchpoint) | |
999dd04b | 666 | { |
11054881 KH |
667 | if (b->type == bp_hardware_breakpoint) |
668 | val = target_remove_hw_breakpoint(b->address, b->shadow_contents); | |
669 | else | |
6b038bd9 DT |
670 | { |
671 | /* Check to see if breakpoint is in an overlay section; | |
672 | if so, we should remove the breakpoint at the LMA address. | |
673 | If that is not equal to the raw address, then we should | |
674 | presumable remove the breakpoint there as well. */ | |
675 | if (overlay_debugging && b->section && | |
676 | section_is_overlay (b->section)) | |
677 | { | |
678 | CORE_ADDR addr; | |
679 | ||
680 | addr = overlay_unmapped_address (b->address, b->section); | |
681 | val = target_remove_breakpoint (addr, b->shadow_contents); | |
682 | /* This would be the time to check val, to see if the | |
683 | shadow breakpoint write to the load address succeeded. | |
684 | However, this might be an ordinary occurrance, eg. if | |
685 | the unmapped overlay is in ROM. */ | |
686 | val = 0; /* in case unmapped address failed */ | |
687 | if (section_is_mapped (b->section)) | |
688 | val = target_remove_breakpoint (b->address, | |
689 | b->shadow_contents); | |
690 | } | |
691 | else /* ordinary (non-overlay) address */ | |
692 | val = target_remove_breakpoint(b->address, b->shadow_contents); | |
693 | } | |
999dd04b JL |
694 | if (val) |
695 | return val; | |
696 | b->inserted = 0; | |
697 | } | |
11054881 KH |
698 | else if ((b->type == bp_hardware_watchpoint || |
699 | b->type == bp_read_watchpoint || | |
700 | b->type == bp_access_watchpoint) | |
999dd04b JL |
701 | && b->enable == enabled |
702 | && ! b->duplicate) | |
703 | { | |
704 | value_ptr v, n; | |
705 | ||
706 | b->inserted = 0; | |
707 | /* Walk down the saved value chain. */ | |
708 | for (v = b->val_chain; v; v = v->next) | |
709 | { | |
710 | /* For each memory reference remove the watchpoint | |
711 | at that address. */ | |
712 | if (v->lval == lval_memory) | |
713 | { | |
6b038bd9 | 714 | int addr, len, type; |
999dd04b JL |
715 | |
716 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
717 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
6b038bd9 DT |
718 | type = 0; |
719 | if (b->type == bp_read_watchpoint) | |
720 | type = 1; | |
721 | else if (b->type == bp_access_watchpoint) | |
722 | type = 2; | |
723 | ||
724 | val = target_remove_watchpoint (addr, len, type); | |
999dd04b JL |
725 | if (val == -1) |
726 | b->inserted = 1; | |
727 | val = 0; | |
728 | } | |
729 | } | |
730 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
731 | if (b->inserted) | |
0fe1522a SG |
732 | warning ("Hardware watchpoint %d: Could not remove watchpoint\n", |
733 | b->number); | |
999dd04b JL |
734 | |
735 | /* Free the saved value chain. We will construct a new one | |
736 | the next time the watchpoint is inserted. */ | |
737 | for (v = b->val_chain; v; v = n) | |
738 | { | |
739 | n = v->next; | |
740 | value_free (v); | |
741 | } | |
742 | b->val_chain = NULL; | |
743 | } | |
bd5635a1 RP |
744 | return 0; |
745 | } | |
746 | ||
cf3e377e | 747 | /* Clear the "inserted" flag in all breakpoints. */ |
bd5635a1 RP |
748 | |
749 | void | |
750 | mark_breakpoints_out () | |
751 | { | |
752 | register struct breakpoint *b; | |
753 | ||
754 | ALL_BREAKPOINTS (b) | |
755 | b->inserted = 0; | |
756 | } | |
757 | ||
cf3e377e JK |
758 | /* Clear the "inserted" flag in all breakpoints and delete any breakpoints |
759 | which should go away between runs of the program. */ | |
760 | ||
761 | void | |
762 | breakpoint_init_inferior () | |
763 | { | |
764 | register struct breakpoint *b, *temp; | |
765 | ||
766 | ALL_BREAKPOINTS_SAFE (b, temp) | |
767 | { | |
768 | b->inserted = 0; | |
769 | ||
e51481f9 JL |
770 | switch (b->type) |
771 | { | |
772 | case bp_call_dummy: | |
773 | case bp_watchpoint_scope: | |
999dd04b | 774 | |
e51481f9 JL |
775 | /* If the call dummy breakpoint is at the entry point it will |
776 | cause problems when the inferior is rerun, so we better | |
777 | get rid of it. | |
999dd04b | 778 | |
e51481f9 JL |
779 | Also get rid of scope breakpoints. */ |
780 | delete_breakpoint (b); | |
781 | break; | |
782 | ||
783 | case bp_watchpoint: | |
784 | case bp_hardware_watchpoint: | |
785 | case bp_read_watchpoint: | |
786 | case bp_access_watchpoint: | |
787 | ||
788 | /* Likewise for watchpoints on local expressions. */ | |
789 | if (b->exp_valid_block != NULL) | |
790 | delete_breakpoint (b); | |
791 | break; | |
792 | ||
793 | default: | |
794 | break; | |
795 | } | |
cf3e377e JK |
796 | } |
797 | } | |
798 | ||
bd5635a1 RP |
799 | /* breakpoint_here_p (PC) returns 1 if an enabled breakpoint exists at PC. |
800 | When continuing from a location with a breakpoint, | |
801 | we actually single step once before calling insert_breakpoints. */ | |
802 | ||
803 | int | |
804 | breakpoint_here_p (pc) | |
805 | CORE_ADDR pc; | |
806 | { | |
807 | register struct breakpoint *b; | |
808 | ||
809 | ALL_BREAKPOINTS (b) | |
6b038bd9 DT |
810 | if (b->enable == enabled |
811 | && b->address == pc) /* bp is enabled and matches pc */ | |
ad3b8c4a JM |
812 | { |
813 | if (overlay_debugging && | |
814 | section_is_overlay (b->section) && | |
815 | !section_is_mapped (b->section)) | |
816 | continue; /* unmapped overlay -- can't be a match */ | |
817 | else | |
818 | return 1; | |
819 | } | |
6b038bd9 DT |
820 | |
821 | return 0; | |
822 | } | |
823 | ||
824 | /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(), but it | |
825 | only returns true if there is actually a breakpoint inserted at PC. */ | |
826 | ||
827 | int | |
828 | breakpoint_inserted_here_p (pc) | |
829 | CORE_ADDR pc; | |
830 | { | |
831 | register struct breakpoint *b; | |
832 | ||
833 | ALL_BREAKPOINTS (b) | |
834 | if (b->inserted | |
835 | && b->address == pc) /* bp is inserted and matches pc */ | |
ad3b8c4a JM |
836 | { |
837 | if (overlay_debugging && | |
838 | section_is_overlay (b->section) && | |
839 | !section_is_mapped (b->section)) | |
840 | continue; /* unmapped overlay -- can't be a match */ | |
841 | else | |
842 | return 1; | |
843 | } | |
bd5635a1 RP |
844 | |
845 | return 0; | |
846 | } | |
199b2450 | 847 | |
05052b63 JK |
848 | /* Return nonzero if FRAME is a dummy frame. We can't use PC_IN_CALL_DUMMY |
849 | because figuring out the saved SP would take too much time, at least using | |
850 | get_saved_register on the 68k. This means that for this function to | |
851 | work right a port must use the bp_call_dummy breakpoint. */ | |
852 | ||
853 | int | |
854 | frame_in_dummy (frame) | |
706dc3ce | 855 | struct frame_info *frame; |
05052b63 | 856 | { |
6b038bd9 DT |
857 | #ifdef CALL_DUMMY |
858 | #ifdef USE_GENERIC_DUMMY_FRAMES | |
859 | return generic_pc_in_call_dummy (frame->pc, frame->frame); | |
860 | #else | |
05052b63 JK |
861 | struct breakpoint *b; |
862 | ||
863 | ALL_BREAKPOINTS (b) | |
864 | { | |
6b038bd9 | 865 | static ULONGEST dummy[] = CALL_DUMMY; |
d7e7e851 | 866 | |
05052b63 | 867 | if (b->type == bp_call_dummy |
d7e7e851 JK |
868 | && b->frame == frame->frame |
869 | ||
870 | /* We need to check the PC as well as the frame on the sparc, | |
871 | for signals.exp in the testsuite. */ | |
872 | && (frame->pc | |
873 | >= (b->address | |
874 | - sizeof (dummy) / sizeof (LONGEST) * REGISTER_SIZE)) | |
875 | && frame->pc <= b->address) | |
05052b63 JK |
876 | return 1; |
877 | } | |
6b038bd9 | 878 | #endif /* GENERIC_DUMMY_FRAMES */ |
d7e7e851 | 879 | #endif /* CALL_DUMMY */ |
05052b63 JK |
880 | return 0; |
881 | } | |
882 | ||
199b2450 TL |
883 | /* breakpoint_match_thread (PC, PID) returns true if the breakpoint at PC |
884 | is valid for process/thread PID. */ | |
885 | ||
886 | int | |
887 | breakpoint_thread_match (pc, pid) | |
888 | CORE_ADDR pc; | |
889 | int pid; | |
890 | { | |
891 | struct breakpoint *b; | |
892 | int thread; | |
893 | ||
894 | thread = pid_to_thread_id (pid); | |
895 | ||
896 | ALL_BREAKPOINTS (b) | |
897 | if (b->enable != disabled | |
fa3764e2 | 898 | && b->enable != shlib_disabled |
199b2450 TL |
899 | && b->address == pc |
900 | && (b->thread == -1 || b->thread == thread)) | |
ad3b8c4a JM |
901 | { |
902 | if (overlay_debugging && | |
903 | section_is_overlay (b->section) && | |
904 | !section_is_mapped (b->section)) | |
905 | continue; /* unmapped overlay -- can't be a match */ | |
906 | else | |
907 | return 1; | |
908 | } | |
199b2450 TL |
909 | |
910 | return 0; | |
911 | } | |
912 | ||
bd5635a1 RP |
913 | \f |
914 | /* bpstat stuff. External routines' interfaces are documented | |
915 | in breakpoint.h. */ | |
30875e1c SG |
916 | |
917 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
918 | Also free any storage that is part of a bpstat. */ | |
919 | ||
bd5635a1 RP |
920 | void |
921 | bpstat_clear (bsp) | |
922 | bpstat *bsp; | |
923 | { | |
924 | bpstat p; | |
925 | bpstat q; | |
926 | ||
927 | if (bsp == 0) | |
928 | return; | |
929 | p = *bsp; | |
930 | while (p != NULL) | |
931 | { | |
932 | q = p->next; | |
933 | if (p->old_val != NULL) | |
934 | value_free (p->old_val); | |
c8950965 | 935 | free ((PTR)p); |
bd5635a1 RP |
936 | p = q; |
937 | } | |
938 | *bsp = NULL; | |
939 | } | |
940 | ||
30875e1c SG |
941 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
942 | is part of the bpstat is copied as well. */ | |
943 | ||
bd5635a1 RP |
944 | bpstat |
945 | bpstat_copy (bs) | |
946 | bpstat bs; | |
947 | { | |
948 | bpstat p = NULL; | |
949 | bpstat tmp; | |
fee933f1 | 950 | bpstat retval = NULL; |
bd5635a1 RP |
951 | |
952 | if (bs == NULL) | |
953 | return bs; | |
954 | ||
955 | for (; bs != NULL; bs = bs->next) | |
956 | { | |
957 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
4ed3a9ea | 958 | memcpy (tmp, bs, sizeof (*tmp)); |
bd5635a1 RP |
959 | if (p == NULL) |
960 | /* This is the first thing in the chain. */ | |
961 | retval = tmp; | |
962 | else | |
963 | p->next = tmp; | |
964 | p = tmp; | |
965 | } | |
966 | p->next = NULL; | |
967 | return retval; | |
968 | } | |
969 | ||
30875e1c SG |
970 | /* Find the bpstat associated with this breakpoint */ |
971 | ||
972 | bpstat | |
973 | bpstat_find_breakpoint(bsp, breakpoint) | |
974 | bpstat bsp; | |
975 | struct breakpoint *breakpoint; | |
976 | { | |
977 | if (bsp == NULL) return NULL; | |
978 | ||
979 | for (;bsp != NULL; bsp = bsp->next) { | |
980 | if (bsp->breakpoint_at == breakpoint) return bsp; | |
981 | } | |
982 | return NULL; | |
983 | } | |
984 | ||
985 | /* Return the breakpoint number of the first breakpoint we are stopped | |
986 | at. *BSP upon return is a bpstat which points to the remaining | |
987 | breakpoints stopped at (but which is not guaranteed to be good for | |
988 | anything but further calls to bpstat_num). | |
989 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
990 | ||
bd5635a1 RP |
991 | int |
992 | bpstat_num (bsp) | |
993 | bpstat *bsp; | |
994 | { | |
995 | struct breakpoint *b; | |
996 | ||
997 | if ((*bsp) == NULL) | |
998 | return 0; /* No more breakpoint values */ | |
999 | else | |
1000 | { | |
1001 | b = (*bsp)->breakpoint_at; | |
1002 | *bsp = (*bsp)->next; | |
1003 | if (b == NULL) | |
1004 | return -1; /* breakpoint that's been deleted since */ | |
1005 | else | |
1006 | return b->number; /* We have its number */ | |
1007 | } | |
1008 | } | |
1009 | ||
30875e1c SG |
1010 | /* Modify BS so that the actions will not be performed. */ |
1011 | ||
bd5635a1 RP |
1012 | void |
1013 | bpstat_clear_actions (bs) | |
1014 | bpstat bs; | |
1015 | { | |
1016 | for (; bs != NULL; bs = bs->next) | |
1017 | { | |
1018 | bs->commands = NULL; | |
1019 | if (bs->old_val != NULL) | |
1020 | { | |
1021 | value_free (bs->old_val); | |
1022 | bs->old_val = NULL; | |
1023 | } | |
1024 | } | |
1025 | } | |
1026 | ||
bdbd5f50 JG |
1027 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ |
1028 | /* ARGSUSED */ | |
1029 | static void | |
1030 | cleanup_executing_breakpoints (ignore) | |
b607efe7 | 1031 | PTR ignore; |
bdbd5f50 JG |
1032 | { |
1033 | executing_breakpoint_commands = 0; | |
1034 | } | |
1035 | ||
bd5635a1 RP |
1036 | /* Execute all the commands associated with all the breakpoints at this |
1037 | location. Any of these commands could cause the process to proceed | |
1038 | beyond this point, etc. We look out for such changes by checking | |
1039 | the global "breakpoint_proceeded" after each command. */ | |
30875e1c | 1040 | |
bd5635a1 RP |
1041 | void |
1042 | bpstat_do_actions (bsp) | |
1043 | bpstat *bsp; | |
1044 | { | |
1045 | bpstat bs; | |
bdbd5f50 | 1046 | struct cleanup *old_chain; |
e8bf33c4 | 1047 | struct command_line *cmd; |
bdbd5f50 | 1048 | |
647e52ea SG |
1049 | /* Avoid endless recursion if a `source' command is contained |
1050 | in bs->commands. */ | |
1051 | if (executing_breakpoint_commands) | |
1052 | return; | |
1053 | ||
bdbd5f50 JG |
1054 | executing_breakpoint_commands = 1; |
1055 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
bd5635a1 RP |
1056 | |
1057 | top: | |
1058 | bs = *bsp; | |
1059 | ||
bd5635a1 RP |
1060 | breakpoint_proceeded = 0; |
1061 | for (; bs != NULL; bs = bs->next) | |
1062 | { | |
e8bf33c4 JK |
1063 | cmd = bs->commands; |
1064 | while (cmd != NULL) | |
bd5635a1 | 1065 | { |
0f8cdd9b | 1066 | execute_control_command (cmd); |
e8bf33c4 | 1067 | cmd = cmd->next; |
bd5635a1 | 1068 | } |
e8bf33c4 JK |
1069 | if (breakpoint_proceeded) |
1070 | /* The inferior is proceeded by the command; bomb out now. | |
1071 | The bpstat chain has been blown away by wait_for_inferior. | |
1072 | But since execution has stopped again, there is a new bpstat | |
1073 | to look at, so start over. */ | |
1074 | goto top; | |
1075 | else | |
1076 | bs->commands = NULL; | |
bd5635a1 | 1077 | } |
bd5635a1 RP |
1078 | |
1079 | executing_breakpoint_commands = 0; | |
bdbd5f50 | 1080 | discard_cleanups (old_chain); |
bd5635a1 RP |
1081 | } |
1082 | ||
8af68e4e JK |
1083 | /* This is the normal print_it function for a bpstat. In the future, |
1084 | much of this logic could (should?) be moved to bpstat_stop_status, | |
1085 | by having it set different print_it functions. */ | |
30875e1c | 1086 | |
8af68e4e JK |
1087 | static int |
1088 | print_it_normal (bs) | |
bd5635a1 RP |
1089 | bpstat bs; |
1090 | { | |
1091 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint | |
1092 | which has since been deleted. */ | |
8af68e4e | 1093 | if (bs->breakpoint_at == NULL |
30875e1c | 1094 | || (bs->breakpoint_at->type != bp_breakpoint |
11054881 | 1095 | && bs->breakpoint_at->type != bp_hardware_breakpoint |
999dd04b | 1096 | && bs->breakpoint_at->type != bp_watchpoint |
11054881 KH |
1097 | && bs->breakpoint_at->type != bp_read_watchpoint |
1098 | && bs->breakpoint_at->type != bp_access_watchpoint | |
999dd04b | 1099 | && bs->breakpoint_at->type != bp_hardware_watchpoint)) |
bd5635a1 | 1100 | return 0; |
bd5635a1 | 1101 | |
11054881 KH |
1102 | if (bs->breakpoint_at->type == bp_breakpoint || |
1103 | bs->breakpoint_at->type == bp_hardware_breakpoint) | |
bd5635a1 RP |
1104 | { |
1105 | /* I think the user probably only wants to see one breakpoint | |
1106 | number, not all of them. */ | |
f2d9c058 | 1107 | annotate_breakpoint (bs->breakpoint_at->number); |
bd5635a1 RP |
1108 | printf_filtered ("\nBreakpoint %d, ", bs->breakpoint_at->number); |
1109 | return 0; | |
1110 | } | |
11054881 KH |
1111 | else if ((bs->old_val != NULL) && |
1112 | (bs->breakpoint_at->type == bp_watchpoint || | |
1113 | bs->breakpoint_at->type == bp_access_watchpoint || | |
1114 | bs->breakpoint_at->type == bp_hardware_watchpoint)) | |
bd5635a1 | 1115 | { |
f2d9c058 | 1116 | annotate_watchpoint (bs->breakpoint_at->number); |
11054881 | 1117 | mention (bs->breakpoint_at); |
bd5635a1 | 1118 | printf_filtered ("\nOld value = "); |
199b2450 | 1119 | value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default); |
bd5635a1 | 1120 | printf_filtered ("\nNew value = "); |
199b2450 | 1121 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, |
bd5635a1 RP |
1122 | Val_pretty_default); |
1123 | printf_filtered ("\n"); | |
1124 | value_free (bs->old_val); | |
1125 | bs->old_val = NULL; | |
bd2f0c85 JL |
1126 | /* More than one watchpoint may have been triggered. */ |
1127 | return -1; | |
bd5635a1 | 1128 | } |
11054881 KH |
1129 | else if (bs->breakpoint_at->type == bp_access_watchpoint || |
1130 | bs->breakpoint_at->type == bp_read_watchpoint) | |
1131 | { | |
1132 | mention (bs->breakpoint_at); | |
1133 | printf_filtered ("\nValue = "); | |
1134 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, | |
1135 | Val_pretty_default); | |
1136 | printf_filtered ("\n"); | |
1137 | return -1; | |
1138 | } | |
8af68e4e JK |
1139 | /* We can't deal with it. Maybe another member of the bpstat chain can. */ |
1140 | return -1; | |
1141 | } | |
1142 | ||
1143 | /* Print a message indicating what happened. Returns nonzero to | |
1144 | say that only the source line should be printed after this (zero | |
1145 | return means print the frame as well as the source line). */ | |
3f031adf | 1146 | /* Currently we always return zero. */ |
8af68e4e JK |
1147 | int |
1148 | bpstat_print (bs) | |
1149 | bpstat bs; | |
1150 | { | |
1151 | int val; | |
1152 | ||
1153 | if (bs == NULL) | |
1154 | return 0; | |
bd5635a1 | 1155 | |
8af68e4e JK |
1156 | val = (*bs->print_it) (bs); |
1157 | if (val >= 0) | |
1158 | return val; | |
1159 | ||
fcb887ff JK |
1160 | /* Maybe another breakpoint in the chain caused us to stop. |
1161 | (Currently all watchpoints go on the bpstat whether hit or | |
1162 | not. That probably could (should) be changed, provided care is taken | |
1163 | with respect to bpstat_explains_signal). */ | |
1164 | if (bs->next) | |
1165 | return bpstat_print (bs->next); | |
1166 | ||
cabd4da6 | 1167 | /* We reached the end of the chain without printing anything. */ |
bd5635a1 RP |
1168 | return 0; |
1169 | } | |
1170 | ||
1171 | /* Evaluate the expression EXP and return 1 if value is zero. | |
1172 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
bdbd5f50 | 1173 | The argument is a "struct expression *" that has been cast to char * to |
bd5635a1 RP |
1174 | make it pass through catch_errors. */ |
1175 | ||
1176 | static int | |
1177 | breakpoint_cond_eval (exp) | |
bdbd5f50 | 1178 | char *exp; |
bd5635a1 | 1179 | { |
11054881 KH |
1180 | value_ptr mark = value_mark (); |
1181 | int i = !value_true (evaluate_expression ((struct expression *)exp)); | |
1182 | value_free_to_mark (mark); | |
1183 | return i; | |
bd5635a1 RP |
1184 | } |
1185 | ||
1186 | /* Allocate a new bpstat and chain it to the current one. */ | |
1187 | ||
1188 | static bpstat | |
1189 | bpstat_alloc (b, cbs) | |
1190 | register struct breakpoint *b; | |
1191 | bpstat cbs; /* Current "bs" value */ | |
1192 | { | |
1193 | bpstat bs; | |
1194 | ||
1195 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
1196 | cbs->next = bs; | |
1197 | bs->breakpoint_at = b; | |
1198 | /* If the condition is false, etc., don't do the commands. */ | |
1199 | bs->commands = NULL; | |
bd5635a1 | 1200 | bs->old_val = NULL; |
8af68e4e | 1201 | bs->print_it = print_it_normal; |
bd5635a1 RP |
1202 | return bs; |
1203 | } | |
fa99ebe1 | 1204 | \f |
8af68e4e JK |
1205 | /* Possible return values for watchpoint_check (this can't be an enum |
1206 | because of check_errors). */ | |
999dd04b JL |
1207 | /* The watchpoint has been deleted. */ |
1208 | #define WP_DELETED 1 | |
8af68e4e JK |
1209 | /* The value has changed. */ |
1210 | #define WP_VALUE_CHANGED 2 | |
1211 | /* The value has not changed. */ | |
1212 | #define WP_VALUE_NOT_CHANGED 3 | |
1213 | ||
e8bf33c4 JK |
1214 | #define BP_TEMPFLAG 1 |
1215 | #define BP_HARDWAREFLAG 2 | |
1216 | ||
8af68e4e | 1217 | /* Check watchpoint condition. */ |
557f3a0e | 1218 | |
8af68e4e JK |
1219 | static int |
1220 | watchpoint_check (p) | |
fe675038 | 1221 | char *p; |
8af68e4e JK |
1222 | { |
1223 | bpstat bs = (bpstat) p; | |
11054881 | 1224 | struct breakpoint *b; |
2b576293 C |
1225 | struct frame_info *fr; |
1226 | int within_current_scope; | |
999dd04b | 1227 | |
557f3a0e SS |
1228 | b = bs->breakpoint_at; |
1229 | ||
1230 | if (b->exp_valid_block == NULL) | |
8af68e4e | 1231 | within_current_scope = 1; |
fa99ebe1 JK |
1232 | else |
1233 | { | |
706dc3ce JL |
1234 | /* There is no current frame at this moment. If we're going to have |
1235 | any chance of handling watchpoints on local variables, we'll need | |
1236 | the frame chain (so we can determine if we're in scope). */ | |
1237 | reinit_frame_cache(); | |
557f3a0e | 1238 | fr = find_frame_addr_in_frame_chain (b->watchpoint_frame); |
999dd04b | 1239 | within_current_scope = (fr != NULL); |
fa99ebe1 JK |
1240 | if (within_current_scope) |
1241 | /* If we end up stopping, the current frame will get selected | |
1242 | in normal_stop. So this call to select_frame won't affect | |
1243 | the user. */ | |
1244 | select_frame (fr, -1); | |
1245 | } | |
1246 | ||
8af68e4e JK |
1247 | if (within_current_scope) |
1248 | { | |
1249 | /* We use value_{,free_to_}mark because it could be a | |
1250 | *long* time before we return to the command level and | |
cef4c2e7 PS |
1251 | call free_all_values. We can't call free_all_values because |
1252 | we might be in the middle of evaluating a function call. */ | |
8af68e4e | 1253 | |
82a2edfb JK |
1254 | value_ptr mark = value_mark (); |
1255 | value_ptr new_val = evaluate_expression (bs->breakpoint_at->exp); | |
557f3a0e | 1256 | if (!value_equal (b->val, new_val)) |
8af68e4e JK |
1257 | { |
1258 | release_value (new_val); | |
1259 | value_free_to_mark (mark); | |
557f3a0e SS |
1260 | bs->old_val = b->val; |
1261 | b->val = new_val; | |
8af68e4e JK |
1262 | /* We will stop here */ |
1263 | return WP_VALUE_CHANGED; | |
1264 | } | |
1265 | else | |
1266 | { | |
1267 | /* Nothing changed, don't do anything. */ | |
1268 | value_free_to_mark (mark); | |
1269 | /* We won't stop here */ | |
1270 | return WP_VALUE_NOT_CHANGED; | |
1271 | } | |
1272 | } | |
1273 | else | |
1274 | { | |
1275 | /* This seems like the only logical thing to do because | |
1276 | if we temporarily ignored the watchpoint, then when | |
1277 | we reenter the block in which it is valid it contains | |
1278 | garbage (in the case of a function, it may have two | |
1279 | garbage values, one before and one after the prologue). | |
1280 | So we can't even detect the first assignment to it and | |
1281 | watch after that (since the garbage may or may not equal | |
1282 | the first value assigned). */ | |
8af68e4e | 1283 | printf_filtered ("\ |
999dd04b | 1284 | Watchpoint %d deleted because the program has left the block in\n\ |
8af68e4e | 1285 | which its expression is valid.\n", bs->breakpoint_at->number); |
557f3a0e | 1286 | if (b->related_breakpoint) |
6b038bd9 | 1287 | b->related_breakpoint->disposition = del_at_next_stop; |
e51481f9 | 1288 | b->disposition = del_at_next_stop; |
999dd04b | 1289 | |
999dd04b | 1290 | return WP_DELETED; |
8af68e4e JK |
1291 | } |
1292 | } | |
1293 | ||
1294 | /* This is used when everything which needs to be printed has | |
1295 | already been printed. But we still want to print the frame. */ | |
1296 | static int | |
cabd4da6 | 1297 | print_it_done (bs) |
8af68e4e JK |
1298 | bpstat bs; |
1299 | { | |
1300 | return 0; | |
1301 | } | |
1302 | ||
cabd4da6 JK |
1303 | /* This is used when nothing should be printed for this bpstat entry. */ |
1304 | ||
1305 | static int | |
1306 | print_it_noop (bs) | |
1307 | bpstat bs; | |
1308 | { | |
1309 | return -1; | |
1310 | } | |
1311 | ||
cb6b0202 | 1312 | /* Get a bpstat associated with having just stopped at address *PC |
706dc3ce | 1313 | and frame address CORE_ADDRESS. Update *PC to point at the |
cb6b0202 JK |
1314 | breakpoint (if we hit a breakpoint). NOT_A_BREAKPOINT is nonzero |
1315 | if this is known to not be a real breakpoint (it could still be a | |
1316 | watchpoint, though). */ | |
1317 | ||
bd5635a1 RP |
1318 | /* Determine whether we stopped at a breakpoint, etc, or whether we |
1319 | don't understand this stop. Result is a chain of bpstat's such that: | |
1320 | ||
1321 | if we don't understand the stop, the result is a null pointer. | |
1322 | ||
cb6b0202 | 1323 | if we understand why we stopped, the result is not null. |
bd5635a1 RP |
1324 | |
1325 | Each element of the chain refers to a particular breakpoint or | |
1326 | watchpoint at which we have stopped. (We may have stopped for | |
2d313932 | 1327 | several reasons concurrently.) |
bd5635a1 RP |
1328 | |
1329 | Each element of the chain has valid next, breakpoint_at, | |
1330 | commands, FIXME??? fields. | |
1331 | ||
1332 | */ | |
1333 | ||
bd5635a1 | 1334 | bpstat |
16726dd1 | 1335 | bpstat_stop_status (pc, not_a_breakpoint) |
bd5635a1 | 1336 | CORE_ADDR *pc; |
cb6b0202 | 1337 | int not_a_breakpoint; |
bd5635a1 | 1338 | { |
fa3764e2 | 1339 | register struct breakpoint *b, *temp; |
bd5635a1 RP |
1340 | CORE_ADDR bp_addr; |
1341 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ | |
1342 | int real_breakpoint = 0; | |
1343 | /* Root of the chain of bpstat's */ | |
e8bf33c4 | 1344 | struct bpstats root_bs[1]; |
bd5635a1 RP |
1345 | /* Pointer to the last thing in the chain currently. */ |
1346 | bpstat bs = root_bs; | |
11054881 KH |
1347 | static char message1[] = |
1348 | "Error evaluating expression for watchpoint %d\n"; | |
1349 | char message[sizeof (message1) + 30 /* slop */]; | |
bd5635a1 RP |
1350 | |
1351 | /* Get the address where the breakpoint would have been. */ | |
1352 | bp_addr = *pc - DECR_PC_AFTER_BREAK; | |
1353 | ||
fa3764e2 | 1354 | ALL_BREAKPOINTS_SAFE (b, temp) |
bd5635a1 | 1355 | { |
fa3764e2 JL |
1356 | if (b->enable == disabled |
1357 | || b->enable == shlib_disabled) | |
bd5635a1 | 1358 | continue; |
30875e1c | 1359 | |
999dd04b JL |
1360 | if (b->type != bp_watchpoint |
1361 | && b->type != bp_hardware_watchpoint | |
11054881 KH |
1362 | && b->type != bp_read_watchpoint |
1363 | && b->type != bp_access_watchpoint | |
6b038bd9 DT |
1364 | && b->type != bp_hardware_breakpoint) /* a non-watchpoint bp */ |
1365 | if (b->address != bp_addr || /* address doesn't match or */ | |
1366 | (overlay_debugging && /* overlay doesn't match */ | |
1367 | section_is_overlay (b->section) && | |
1368 | !section_is_mapped (b->section))) | |
1369 | continue; | |
bd5635a1 | 1370 | |
11054881 KH |
1371 | if (b->type == bp_hardware_breakpoint |
1372 | && b->address != (bp_addr - DECR_PC_AFTER_HW_BREAK)) | |
1373 | continue; | |
1374 | ||
999dd04b JL |
1375 | if (b->type != bp_watchpoint |
1376 | && b->type != bp_hardware_watchpoint | |
11054881 KH |
1377 | && b->type != bp_read_watchpoint |
1378 | && b->type != bp_access_watchpoint | |
999dd04b | 1379 | && not_a_breakpoint) |
cb6b0202 JK |
1380 | continue; |
1381 | ||
30875e1c SG |
1382 | /* Come here if it's a watchpoint, or if the break address matches */ |
1383 | ||
9f577285 SS |
1384 | ++(b->hit_count); |
1385 | ||
bd5635a1 RP |
1386 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ |
1387 | ||
cabd4da6 JK |
1388 | bs->stop = 1; |
1389 | bs->print = 1; | |
bd5635a1 | 1390 | |
11054881 | 1391 | sprintf (message, message1, b->number); |
999dd04b | 1392 | if (b->type == bp_watchpoint || b->type == bp_hardware_watchpoint) |
bd5635a1 | 1393 | { |
fe675038 JK |
1394 | switch (catch_errors (watchpoint_check, (char *) bs, message, |
1395 | RETURN_MASK_ALL)) | |
bd5635a1 | 1396 | { |
999dd04b | 1397 | case WP_DELETED: |
8af68e4e | 1398 | /* We've already printed what needs to be printed. */ |
cabd4da6 | 1399 | bs->print_it = print_it_done; |
8af68e4e JK |
1400 | /* Stop. */ |
1401 | break; | |
1402 | case WP_VALUE_CHANGED: | |
1403 | /* Stop. */ | |
1404 | break; | |
1405 | case WP_VALUE_NOT_CHANGED: | |
1406 | /* Don't stop. */ | |
cabd4da6 JK |
1407 | bs->print_it = print_it_noop; |
1408 | bs->stop = 0; | |
92fb1f2e SS |
1409 | /* Don't consider this a hit. */ |
1410 | --(b->hit_count); | |
bd5635a1 | 1411 | continue; |
8af68e4e JK |
1412 | default: |
1413 | /* Can't happen. */ | |
1414 | /* FALLTHROUGH */ | |
1415 | case 0: | |
1416 | /* Error from catch_errors. */ | |
999dd04b JL |
1417 | printf_filtered ("Watchpoint %d deleted.\n", b->number); |
1418 | if (b->related_breakpoint) | |
6b038bd9 | 1419 | b->related_breakpoint->disposition = del_at_next_stop; |
e51481f9 | 1420 | b->disposition = del_at_next_stop; |
8af68e4e | 1421 | /* We've already printed what needs to be printed. */ |
cabd4da6 | 1422 | bs->print_it = print_it_done; |
999dd04b | 1423 | |
8af68e4e JK |
1424 | /* Stop. */ |
1425 | break; | |
bd5635a1 RP |
1426 | } |
1427 | } | |
11054881 KH |
1428 | else if (b->type == bp_read_watchpoint || b->type == bp_access_watchpoint) |
1429 | { | |
1430 | CORE_ADDR addr; | |
1431 | value_ptr v; | |
1432 | int found = 0; | |
1433 | ||
1434 | addr = target_stopped_data_address(); | |
1435 | if (addr == 0) continue; | |
1436 | for (v = b->val_chain; v; v = v->next) | |
1437 | { | |
1438 | if (v->lval == lval_memory) | |
1439 | { | |
1440 | CORE_ADDR vaddr; | |
1441 | ||
1442 | vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
1443 | if (addr == vaddr) | |
1444 | found = 1; | |
1445 | } | |
1446 | } | |
1447 | if (found) | |
1448 | switch (catch_errors (watchpoint_check, (char *) bs, message, | |
1449 | RETURN_MASK_ALL)) | |
1450 | { | |
1451 | case WP_DELETED: | |
1452 | /* We've already printed what needs to be printed. */ | |
1453 | bs->print_it = print_it_done; | |
1454 | /* Stop. */ | |
1455 | break; | |
1456 | case WP_VALUE_CHANGED: | |
1457 | case WP_VALUE_NOT_CHANGED: | |
1458 | /* Stop. */ | |
1459 | break; | |
1460 | default: | |
1461 | /* Can't happen. */ | |
1462 | case 0: | |
1463 | /* Error from catch_errors. */ | |
1464 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
e51481f9 | 1465 | if (b->related_breakpoint) |
6b038bd9 | 1466 | b->related_breakpoint->disposition = del_at_next_stop; |
e51481f9 | 1467 | b->disposition = del_at_next_stop; |
11054881 KH |
1468 | /* We've already printed what needs to be printed. */ |
1469 | bs->print_it = print_it_done; | |
1470 | break; | |
1471 | } | |
1472 | } | |
6b038bd9 | 1473 | else if (DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs) |
bd5635a1 RP |
1474 | real_breakpoint = 1; |
1475 | ||
6ee2da94 FCE |
1476 | if (b->frame && b->frame != (get_current_frame ())->frame && |
1477 | (b->type == bp_step_resume && | |
1478 | (get_current_frame ())->frame INNER_THAN b->frame)) | |
cabd4da6 | 1479 | bs->stop = 0; |
bd5635a1 RP |
1480 | else |
1481 | { | |
fee933f1 | 1482 | int value_is_zero = 0; |
bd5635a1 RP |
1483 | |
1484 | if (b->cond) | |
1485 | { | |
1486 | /* Need to select the frame, with all that implies | |
1487 | so that the conditions will have the right context. */ | |
1488 | select_frame (get_current_frame (), 0); | |
bdbd5f50 JG |
1489 | value_is_zero |
1490 | = catch_errors (breakpoint_cond_eval, (char *)(b->cond), | |
fe675038 JK |
1491 | "Error in testing breakpoint condition:\n", |
1492 | RETURN_MASK_ALL); | |
06b6c733 | 1493 | /* FIXME-someday, should give breakpoint # */ |
bd5635a1 RP |
1494 | free_all_values (); |
1495 | } | |
bdbd5f50 | 1496 | if (b->cond && value_is_zero) |
bd5635a1 | 1497 | { |
cabd4da6 | 1498 | bs->stop = 0; |
92fb1f2e SS |
1499 | /* Don't consider this a hit. */ |
1500 | --(b->hit_count); | |
bd5635a1 RP |
1501 | } |
1502 | else if (b->ignore_count > 0) | |
1503 | { | |
1504 | b->ignore_count--; | |
cabd4da6 | 1505 | bs->stop = 0; |
bd5635a1 RP |
1506 | } |
1507 | else | |
1508 | { | |
1509 | /* We will stop here */ | |
30875e1c | 1510 | if (b->disposition == disable) |
bd5635a1 RP |
1511 | b->enable = disabled; |
1512 | bs->commands = b->commands; | |
1513 | if (b->silent) | |
cabd4da6 | 1514 | bs->print = 0; |
2d313932 | 1515 | if (bs->commands && STREQ ("silent", bs->commands->line)) |
bd5635a1 RP |
1516 | { |
1517 | bs->commands = bs->commands->next; | |
cabd4da6 | 1518 | bs->print = 0; |
bd5635a1 RP |
1519 | } |
1520 | } | |
1521 | } | |
cabd4da6 JK |
1522 | /* Print nothing for this entry if we dont stop or if we dont print. */ |
1523 | if (bs->stop == 0 || bs->print == 0) | |
1524 | bs->print_it = print_it_noop; | |
bd5635a1 RP |
1525 | } |
1526 | ||
1527 | bs->next = NULL; /* Terminate the chain */ | |
1528 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
6b038bd9 DT |
1529 | |
1530 | if ((DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs) && bs) | |
bd5635a1 | 1531 | { |
bd5635a1 RP |
1532 | if (real_breakpoint) |
1533 | { | |
1534 | *pc = bp_addr; | |
1535 | #if defined (SHIFT_INST_REGS) | |
817ac7f8 | 1536 | SHIFT_INST_REGS(); |
bd5635a1 RP |
1537 | #else /* No SHIFT_INST_REGS. */ |
1538 | write_pc (bp_addr); | |
1539 | #endif /* No SHIFT_INST_REGS. */ | |
1540 | } | |
bd5635a1 | 1541 | } |
999dd04b JL |
1542 | |
1543 | /* The value of a hardware watchpoint hasn't changed, but the | |
1544 | intermediate memory locations we are watching may have. */ | |
11054881 KH |
1545 | if (bs && ! bs->stop && |
1546 | (bs->breakpoint_at->type == bp_hardware_watchpoint || | |
1547 | bs->breakpoint_at->type == bp_read_watchpoint || | |
1548 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
999dd04b JL |
1549 | { |
1550 | remove_breakpoints (); | |
1551 | insert_breakpoints (); | |
1552 | } | |
bd5635a1 RP |
1553 | return bs; |
1554 | } | |
cabd4da6 JK |
1555 | \f |
1556 | /* Tell what to do about this bpstat. */ | |
fe675038 | 1557 | struct bpstat_what |
cabd4da6 JK |
1558 | bpstat_what (bs) |
1559 | bpstat bs; | |
1560 | { | |
1561 | /* Classify each bpstat as one of the following. */ | |
1562 | enum class { | |
fe675038 JK |
1563 | /* This bpstat element has no effect on the main_action. */ |
1564 | no_effect = 0, | |
cabd4da6 JK |
1565 | |
1566 | /* There was a watchpoint, stop but don't print. */ | |
1567 | wp_silent, | |
1568 | ||
1569 | /* There was a watchpoint, stop and print. */ | |
1570 | wp_noisy, | |
1571 | ||
1572 | /* There was a breakpoint but we're not stopping. */ | |
1573 | bp_nostop, | |
1574 | ||
1575 | /* There was a breakpoint, stop but don't print. */ | |
1576 | bp_silent, | |
1577 | ||
1578 | /* There was a breakpoint, stop and print. */ | |
1579 | bp_noisy, | |
1580 | ||
1581 | /* We hit the longjmp breakpoint. */ | |
1582 | long_jump, | |
1583 | ||
1584 | /* We hit the longjmp_resume breakpoint. */ | |
1585 | long_resume, | |
1586 | ||
d7e7e851 JK |
1587 | /* We hit the step_resume breakpoint. */ |
1588 | step_resume, | |
1589 | ||
bcc37718 JK |
1590 | /* We hit the through_sigtramp breakpoint. */ |
1591 | through_sig, | |
1592 | ||
27b6a1fa JL |
1593 | /* We hit the shared library event breakpoint. */ |
1594 | shlib_event, | |
1595 | ||
cabd4da6 JK |
1596 | /* This is just used to count how many enums there are. */ |
1597 | class_last | |
1598 | }; | |
1599 | ||
1600 | /* Here is the table which drives this routine. So that we can | |
1601 | format it pretty, we define some abbreviations for the | |
1602 | enum bpstat_what codes. */ | |
27b6a1fa JL |
1603 | #define kc BPSTAT_WHAT_KEEP_CHECKING |
1604 | #define ss BPSTAT_WHAT_STOP_SILENT | |
1605 | #define sn BPSTAT_WHAT_STOP_NOISY | |
1606 | #define sgl BPSTAT_WHAT_SINGLE | |
1607 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
1608 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
1609 | #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
d7e7e851 | 1610 | #define sr BPSTAT_WHAT_STEP_RESUME |
bcc37718 | 1611 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP |
27b6a1fa | 1612 | #define shl BPSTAT_WHAT_CHECK_SHLIBS |
d7e7e851 | 1613 | |
cabd4da6 JK |
1614 | /* "Can't happen." Might want to print an error message. |
1615 | abort() is not out of the question, but chances are GDB is just | |
1616 | a bit confused, not unusable. */ | |
1617 | #define err BPSTAT_WHAT_STOP_NOISY | |
1618 | ||
1619 | /* Given an old action and a class, come up with a new action. */ | |
84d59861 JK |
1620 | /* One interesting property of this table is that wp_silent is the same |
1621 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
1622 | after stopping, the check for whether to step over a breakpoint | |
1623 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
1624 | reference to how we stopped. We retain separate wp_silent and bp_silent | |
1625 | codes in case we want to change that someday. */ | |
d7e7e851 JK |
1626 | |
1627 | /* step_resume entries: a step resume breakpoint overrides another | |
1628 | breakpoint of signal handling (see comment in wait_for_inferior | |
1629 | at first IN_SIGTRAMP where we set the step_resume breakpoint). */ | |
bcc37718 JK |
1630 | /* We handle the through_sigtramp_breakpoint the same way; having both |
1631 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
d7e7e851 | 1632 | |
fe675038 | 1633 | static const enum bpstat_what_main_action |
cabd4da6 JK |
1634 | table[(int)class_last][(int)BPSTAT_WHAT_LAST] = |
1635 | { | |
1636 | /* old action */ | |
27b6a1fa | 1637 | /* kc ss sn sgl slr clr clrs sr ts shl |
bcc37718 | 1638 | */ |
27b6a1fa JL |
1639 | /*no_effect*/ {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl}, |
1640 | /*wp_silent*/ {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl}, | |
1641 | /*wp_noisy*/ {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl}, | |
1642 | /*bp_nostop*/ {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl}, | |
1643 | /*bp_silent*/ {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl}, | |
1644 | /*bp_noisy*/ {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl}, | |
1645 | /*long_jump*/ {slr, ss, sn, slr, err, err, err, sr, ts, shl}, | |
1646 | /*long_resume*/ {clr, ss, sn, clrs, err, err, err, sr, ts, shl}, | |
1647 | /*step_resume*/ {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl}, | |
1648 | /*through_sig*/ {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl}, | |
1649 | /*shlib*/ {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl} | |
cabd4da6 | 1650 | }; |
27b6a1fa JL |
1651 | #undef kc |
1652 | #undef ss | |
1653 | #undef sn | |
1654 | #undef sgl | |
1655 | #undef slr | |
1656 | #undef clr | |
1657 | #undef clrs | |
cabd4da6 | 1658 | #undef err |
bcc37718 JK |
1659 | #undef sr |
1660 | #undef ts | |
27b6a1fa | 1661 | #undef shl |
fe675038 | 1662 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; |
84d59861 | 1663 | struct bpstat_what retval; |
cabd4da6 | 1664 | |
cef4c2e7 | 1665 | retval.call_dummy = 0; |
cabd4da6 JK |
1666 | for (; bs != NULL; bs = bs->next) |
1667 | { | |
fee933f1 | 1668 | enum class bs_class = no_effect; |
cabd4da6 JK |
1669 | if (bs->breakpoint_at == NULL) |
1670 | /* I suspect this can happen if it was a momentary breakpoint | |
1671 | which has since been deleted. */ | |
1672 | continue; | |
1673 | switch (bs->breakpoint_at->type) | |
1674 | { | |
1675 | case bp_breakpoint: | |
11054881 | 1676 | case bp_hardware_breakpoint: |
cabd4da6 JK |
1677 | case bp_until: |
1678 | case bp_finish: | |
1679 | if (bs->stop) | |
1680 | { | |
1681 | if (bs->print) | |
1682 | bs_class = bp_noisy; | |
1683 | else | |
1684 | bs_class = bp_silent; | |
1685 | } | |
1686 | else | |
1687 | bs_class = bp_nostop; | |
1688 | break; | |
1689 | case bp_watchpoint: | |
999dd04b | 1690 | case bp_hardware_watchpoint: |
11054881 KH |
1691 | case bp_read_watchpoint: |
1692 | case bp_access_watchpoint: | |
cabd4da6 JK |
1693 | if (bs->stop) |
1694 | { | |
1695 | if (bs->print) | |
1696 | bs_class = wp_noisy; | |
1697 | else | |
1698 | bs_class = wp_silent; | |
1699 | } | |
1700 | else | |
fe675038 JK |
1701 | /* There was a watchpoint, but we're not stopping. This requires |
1702 | no further action. */ | |
1703 | bs_class = no_effect; | |
cabd4da6 JK |
1704 | break; |
1705 | case bp_longjmp: | |
1706 | bs_class = long_jump; | |
1707 | break; | |
1708 | case bp_longjmp_resume: | |
1709 | bs_class = long_resume; | |
1710 | break; | |
fe675038 | 1711 | case bp_step_resume: |
fe675038 JK |
1712 | if (bs->stop) |
1713 | { | |
d7e7e851 | 1714 | bs_class = step_resume; |
fe675038 JK |
1715 | } |
1716 | else | |
1717 | /* It is for the wrong frame. */ | |
1718 | bs_class = bp_nostop; | |
bcc37718 JK |
1719 | break; |
1720 | case bp_through_sigtramp: | |
1721 | bs_class = through_sig; | |
fe675038 | 1722 | break; |
999dd04b JL |
1723 | case bp_watchpoint_scope: |
1724 | bs_class = bp_nostop; | |
1725 | break; | |
27b6a1fa JL |
1726 | case bp_shlib_event: |
1727 | bs_class = shlib_event; | |
1728 | break; | |
84d59861 JK |
1729 | case bp_call_dummy: |
1730 | /* Make sure the action is stop (silent or noisy), so infrun.c | |
1731 | pops the dummy frame. */ | |
1732 | bs_class = bp_silent; | |
1733 | retval.call_dummy = 1; | |
bb7b3800 | 1734 | break; |
cabd4da6 JK |
1735 | } |
1736 | current_action = table[(int)bs_class][(int)current_action]; | |
1737 | } | |
84d59861 JK |
1738 | retval.main_action = current_action; |
1739 | return retval; | |
cabd4da6 | 1740 | } |
bd5635a1 | 1741 | |
30875e1c SG |
1742 | /* Nonzero if we should step constantly (e.g. watchpoints on machines |
1743 | without hardware support). This isn't related to a specific bpstat, | |
1744 | just to things like whether watchpoints are set. */ | |
1745 | ||
bd5635a1 RP |
1746 | int |
1747 | bpstat_should_step () | |
1748 | { | |
1749 | struct breakpoint *b; | |
1750 | ALL_BREAKPOINTS (b) | |
30875e1c | 1751 | if (b->enable == enabled && b->type == bp_watchpoint) |
bd5635a1 RP |
1752 | return 1; |
1753 | return 0; | |
1754 | } | |
1755 | \f | |
1756 | /* Print information on breakpoint number BNUM, or -1 if all. | |
1757 | If WATCHPOINTS is zero, process only breakpoints; if WATCHPOINTS | |
1758 | is nonzero, process only watchpoints. */ | |
1759 | ||
1760 | static void | |
c8950965 | 1761 | breakpoint_1 (bnum, allflag) |
bd5635a1 | 1762 | int bnum; |
80ba48f5 | 1763 | int allflag; |
bd5635a1 RP |
1764 | { |
1765 | register struct breakpoint *b; | |
1766 | register struct command_line *l; | |
1767 | register struct symbol *sym; | |
1768 | CORE_ADDR last_addr = (CORE_ADDR)-1; | |
30875e1c | 1769 | int found_a_breakpoint = 0; |
11054881 KH |
1770 | static char *bptypes[] = {"breakpoint", "hw breakpoint", |
1771 | "until", "finish", "watchpoint", | |
1772 | "hw watchpoint", "read watchpoint", | |
1773 | "acc watchpoint", "longjmp", | |
999dd04b | 1774 | "longjmp resume", "step resume", |
27b6a1fa JL |
1775 | "sigtramp", |
1776 | "watchpoint scope", "call dummy", | |
1777 | "shlib events" }; | |
e51481f9 | 1778 | static char *bpdisps[] = {"del", "dstp", "dis", "keep"}; |
647e52ea | 1779 | static char bpenables[] = "nyn"; |
0a62ff36 | 1780 | char wrap_indent[80]; |
30875e1c | 1781 | |
bd5635a1 | 1782 | ALL_BREAKPOINTS (b) |
30875e1c SG |
1783 | if (bnum == -1 |
1784 | || bnum == b->number) | |
bd5635a1 | 1785 | { |
80ba48f5 SG |
1786 | /* We only print out user settable breakpoints unless the allflag is set. */ |
1787 | if (!allflag | |
1788 | && b->type != bp_breakpoint | |
11054881 | 1789 | && b->type != bp_hardware_breakpoint |
999dd04b | 1790 | && b->type != bp_watchpoint |
11054881 KH |
1791 | && b->type != bp_read_watchpoint |
1792 | && b->type != bp_access_watchpoint | |
999dd04b | 1793 | && b->type != bp_hardware_watchpoint) |
80ba48f5 SG |
1794 | continue; |
1795 | ||
30875e1c | 1796 | if (!found_a_breakpoint++) |
47ebe8fd | 1797 | { |
f2d9c058 KH |
1798 | annotate_breakpoints_headers (); |
1799 | ||
1800 | annotate_field (0); | |
1801 | printf_filtered ("Num "); | |
1802 | annotate_field (1); | |
1803 | printf_filtered ("Type "); | |
1804 | annotate_field (2); | |
1805 | printf_filtered ("Disp "); | |
1806 | annotate_field (3); | |
1807 | printf_filtered ("Enb "); | |
1808 | if (addressprint) | |
1809 | { | |
1810 | annotate_field (4); | |
1811 | printf_filtered ("Address "); | |
1812 | } | |
1813 | annotate_field (5); | |
1814 | printf_filtered ("What\n"); | |
1815 | ||
1816 | annotate_breakpoints_table (); | |
1817 | } | |
1818 | ||
1819 | annotate_record (); | |
1820 | annotate_field (0); | |
1821 | printf_filtered ("%-3d ", b->number); | |
1822 | annotate_field (1); | |
1823 | printf_filtered ("%-14s ", bptypes[(int)b->type]); | |
1824 | annotate_field (2); | |
1825 | printf_filtered ("%-4s ", bpdisps[(int)b->disposition]); | |
1826 | annotate_field (3); | |
47ebe8fd JK |
1827 | printf_filtered ("%-3c ", bpenables[(int)b->enable]); |
1828 | ||
0a62ff36 JK |
1829 | strcpy (wrap_indent, " "); |
1830 | if (addressprint) | |
1831 | strcat (wrap_indent, " "); | |
30875e1c | 1832 | switch (b->type) |
bd5635a1 | 1833 | { |
30875e1c | 1834 | case bp_watchpoint: |
999dd04b | 1835 | case bp_hardware_watchpoint: |
11054881 KH |
1836 | case bp_read_watchpoint: |
1837 | case bp_access_watchpoint: | |
47ebe8fd JK |
1838 | /* Field 4, the address, is omitted (which makes the columns |
1839 | not line up too nicely with the headers, but the effect | |
1840 | is relatively readable). */ | |
9f577285 | 1841 | annotate_field (5); |
199b2450 | 1842 | print_expression (b->exp, gdb_stdout); |
30875e1c | 1843 | break; |
84d59861 | 1844 | |
30875e1c | 1845 | case bp_breakpoint: |
11054881 | 1846 | case bp_hardware_breakpoint: |
80ba48f5 SG |
1847 | case bp_until: |
1848 | case bp_finish: | |
1849 | case bp_longjmp: | |
1850 | case bp_longjmp_resume: | |
84d59861 | 1851 | case bp_step_resume: |
bcc37718 | 1852 | case bp_through_sigtramp: |
999dd04b | 1853 | case bp_watchpoint_scope: |
bb7b3800 | 1854 | case bp_call_dummy: |
27b6a1fa | 1855 | case bp_shlib_event: |
bd5635a1 | 1856 | if (addressprint) |
47ebe8fd | 1857 | { |
f2d9c058 | 1858 | annotate_field (4); |
47ebe8fd JK |
1859 | /* FIXME-32x64: need a print_address_numeric with |
1860 | field width */ | |
1861 | printf_filtered | |
1862 | ("%s ", | |
1863 | local_hex_string_custom | |
1864 | ((unsigned long) b->address, "08l")); | |
1865 | } | |
1866 | ||
f2d9c058 | 1867 | annotate_field (5); |
bd5635a1 RP |
1868 | |
1869 | last_addr = b->address; | |
d889f6b7 | 1870 | if (b->source_file) |
bd5635a1 | 1871 | { |
6b038bd9 | 1872 | sym = find_pc_sect_function (b->address, b->section); |
bd5635a1 RP |
1873 | if (sym) |
1874 | { | |
199b2450 TL |
1875 | fputs_filtered ("in ", gdb_stdout); |
1876 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout); | |
0a62ff36 | 1877 | wrap_here (wrap_indent); |
199b2450 | 1878 | fputs_filtered (" at ", gdb_stdout); |
bd5635a1 | 1879 | } |
199b2450 | 1880 | fputs_filtered (b->source_file, gdb_stdout); |
bd5635a1 RP |
1881 | printf_filtered (":%d", b->line_number); |
1882 | } | |
1883 | else | |
199b2450 | 1884 | print_address_symbolic (b->address, gdb_stdout, demangle, " "); |
fee933f1 | 1885 | break; |
bd5635a1 RP |
1886 | } |
1887 | ||
1888 | printf_filtered ("\n"); | |
1889 | ||
1890 | if (b->frame) | |
833e0d94 | 1891 | { |
f2d9c058 | 1892 | annotate_field (6); |
47ebe8fd | 1893 | |
833e0d94 | 1894 | printf_filtered ("\tstop only in stack frame at "); |
d24c0599 | 1895 | print_address_numeric (b->frame, 1, gdb_stdout); |
833e0d94 | 1896 | printf_filtered ("\n"); |
bcc37718 | 1897 | } |
47ebe8fd | 1898 | |
bd5635a1 RP |
1899 | if (b->cond) |
1900 | { | |
f2d9c058 | 1901 | annotate_field (7); |
47ebe8fd | 1902 | |
bd5635a1 | 1903 | printf_filtered ("\tstop only if "); |
199b2450 | 1904 | print_expression (b->cond, gdb_stdout); |
bd5635a1 RP |
1905 | printf_filtered ("\n"); |
1906 | } | |
47ebe8fd | 1907 | |
647e52ea SG |
1908 | if (b->thread != -1) |
1909 | { | |
1910 | /* FIXME should make an annotation for this */ | |
1911 | printf_filtered ("\tstop only in thread %d\n", b->thread); | |
1912 | } | |
1913 | ||
9f577285 SS |
1914 | if (show_breakpoint_hit_counts && b->hit_count) |
1915 | { | |
1916 | /* FIXME should make an annotation for this */ | |
1917 | ||
16726dd1 JK |
1918 | printf_filtered ("\tbreakpoint already hit %d time%s\n", |
1919 | b->hit_count, (b->hit_count == 1 ? "" : "s")); | |
9f577285 SS |
1920 | } |
1921 | ||
bd5635a1 | 1922 | if (b->ignore_count) |
47ebe8fd | 1923 | { |
f2d9c058 | 1924 | annotate_field (8); |
47ebe8fd JK |
1925 | |
1926 | printf_filtered ("\tignore next %d hits\n", b->ignore_count); | |
1927 | } | |
1928 | ||
bd5635a1 | 1929 | if ((l = b->commands)) |
47ebe8fd | 1930 | { |
f2d9c058 | 1931 | annotate_field (9); |
47ebe8fd JK |
1932 | |
1933 | while (l) | |
1934 | { | |
0f8cdd9b | 1935 | print_command_line (l, 4); |
47ebe8fd JK |
1936 | l = l->next; |
1937 | } | |
1938 | } | |
bd5635a1 RP |
1939 | } |
1940 | ||
fee933f1 RP |
1941 | if (!found_a_breakpoint) |
1942 | { | |
1943 | if (bnum == -1) | |
1944 | printf_filtered ("No breakpoints or watchpoints.\n"); | |
1945 | else | |
1946 | printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum); | |
1947 | } | |
30875e1c SG |
1948 | else |
1949 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
1950 | that a comparison of an unsigned with -1 is always false. */ | |
1951 | if (last_addr != (CORE_ADDR)-1) | |
1952 | set_next_address (last_addr); | |
47ebe8fd | 1953 | |
f2d9c058 | 1954 | annotate_breakpoints_table_end (); |
bd5635a1 RP |
1955 | } |
1956 | ||
bdbd5f50 | 1957 | /* ARGSUSED */ |
bd5635a1 RP |
1958 | static void |
1959 | breakpoints_info (bnum_exp, from_tty) | |
1960 | char *bnum_exp; | |
1961 | int from_tty; | |
1962 | { | |
1963 | int bnum = -1; | |
1964 | ||
1965 | if (bnum_exp) | |
1966 | bnum = parse_and_eval_address (bnum_exp); | |
1967 | ||
c8950965 | 1968 | breakpoint_1 (bnum, 0); |
80ba48f5 SG |
1969 | } |
1970 | ||
9b280a7f JG |
1971 | #if MAINTENANCE_CMDS |
1972 | ||
80ba48f5 SG |
1973 | /* ARGSUSED */ |
1974 | static void | |
9b280a7f | 1975 | maintenance_info_breakpoints (bnum_exp, from_tty) |
80ba48f5 SG |
1976 | char *bnum_exp; |
1977 | int from_tty; | |
1978 | { | |
1979 | int bnum = -1; | |
1980 | ||
1981 | if (bnum_exp) | |
1982 | bnum = parse_and_eval_address (bnum_exp); | |
1983 | ||
c8950965 | 1984 | breakpoint_1 (bnum, 1); |
bd5635a1 RP |
1985 | } |
1986 | ||
9b280a7f JG |
1987 | #endif |
1988 | ||
bd5635a1 RP |
1989 | /* Print a message describing any breakpoints set at PC. */ |
1990 | ||
1991 | static void | |
6b038bd9 DT |
1992 | describe_other_breakpoints (pc, section) |
1993 | CORE_ADDR pc; | |
1994 | asection *section; | |
bd5635a1 RP |
1995 | { |
1996 | register int others = 0; | |
1997 | register struct breakpoint *b; | |
1998 | ||
1999 | ALL_BREAKPOINTS (b) | |
2000 | if (b->address == pc) | |
6b038bd9 DT |
2001 | if (overlay_debugging == 0 || |
2002 | b->section == section) | |
2003 | others++; | |
bd5635a1 RP |
2004 | if (others > 0) |
2005 | { | |
833e0d94 | 2006 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); |
bd5635a1 RP |
2007 | ALL_BREAKPOINTS (b) |
2008 | if (b->address == pc) | |
6b038bd9 DT |
2009 | if (overlay_debugging == 0 || |
2010 | b->section == section) | |
2011 | { | |
2012 | others--; | |
2013 | printf_filtered | |
2014 | ("%d%s%s ", | |
2015 | b->number, | |
2016 | ((b->enable == disabled || b->enable == shlib_disabled) | |
2017 | ? " (disabled)" : ""), | |
2018 | (others > 1) ? "," : ((others == 1) ? " and" : "")); | |
2019 | } | |
833e0d94 | 2020 | printf_filtered ("also set at pc "); |
d24c0599 | 2021 | print_address_numeric (pc, 1, gdb_stdout); |
833e0d94 | 2022 | printf_filtered (".\n"); |
bd5635a1 RP |
2023 | } |
2024 | } | |
2025 | \f | |
2026 | /* Set the default place to put a breakpoint | |
2027 | for the `break' command with no arguments. */ | |
2028 | ||
2029 | void | |
2030 | set_default_breakpoint (valid, addr, symtab, line) | |
2031 | int valid; | |
2032 | CORE_ADDR addr; | |
2033 | struct symtab *symtab; | |
2034 | int line; | |
2035 | { | |
2036 | default_breakpoint_valid = valid; | |
2037 | default_breakpoint_address = addr; | |
2038 | default_breakpoint_symtab = symtab; | |
2039 | default_breakpoint_line = line; | |
2040 | } | |
2041 | ||
2042 | /* Rescan breakpoints at address ADDRESS, | |
2043 | marking the first one as "first" and any others as "duplicates". | |
2044 | This is so that the bpt instruction is only inserted once. */ | |
2045 | ||
2046 | static void | |
6b038bd9 | 2047 | check_duplicates (address, section) |
bd5635a1 | 2048 | CORE_ADDR address; |
6b038bd9 | 2049 | asection *section; |
bd5635a1 RP |
2050 | { |
2051 | register struct breakpoint *b; | |
2052 | register int count = 0; | |
2053 | ||
30875e1c | 2054 | if (address == 0) /* Watchpoints are uninteresting */ |
f266e564 JK |
2055 | return; |
2056 | ||
bd5635a1 | 2057 | ALL_BREAKPOINTS (b) |
fa3764e2 JL |
2058 | if (b->enable != disabled |
2059 | && b->enable != shlib_disabled | |
6b038bd9 DT |
2060 | && b->address == address |
2061 | && (overlay_debugging == 0 || b->section == section)) | |
bd5635a1 RP |
2062 | { |
2063 | count++; | |
2064 | b->duplicate = count > 1; | |
2065 | } | |
2066 | } | |
2067 | ||
2068 | /* Low level routine to set a breakpoint. | |
2069 | Takes as args the three things that every breakpoint must have. | |
2070 | Returns the breakpoint object so caller can set other things. | |
2071 | Does not set the breakpoint number! | |
f266e564 JK |
2072 | Does not print anything. |
2073 | ||
2074 | ==> This routine should not be called if there is a chance of later | |
2075 | error(); otherwise it leaves a bogus breakpoint on the chain. Validate | |
2076 | your arguments BEFORE calling this routine! */ | |
bd5635a1 | 2077 | |
895cc8ab | 2078 | struct breakpoint * |
bd5635a1 RP |
2079 | set_raw_breakpoint (sal) |
2080 | struct symtab_and_line sal; | |
2081 | { | |
2082 | register struct breakpoint *b, *b1; | |
2083 | ||
2084 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4ed3a9ea | 2085 | memset (b, 0, sizeof (*b)); |
bd5635a1 | 2086 | b->address = sal.pc; |
d889f6b7 JK |
2087 | if (sal.symtab == NULL) |
2088 | b->source_file = NULL; | |
2089 | else | |
2090 | b->source_file = savestring (sal.symtab->filename, | |
2091 | strlen (sal.symtab->filename)); | |
6b038bd9 | 2092 | b->section = sal.section; |
706dc3ce JL |
2093 | b->language = current_language->la_language; |
2094 | b->input_radix = input_radix; | |
199b2450 | 2095 | b->thread = -1; |
bd5635a1 RP |
2096 | b->line_number = sal.line; |
2097 | b->enable = enabled; | |
2098 | b->next = 0; | |
2099 | b->silent = 0; | |
2100 | b->ignore_count = 0; | |
2101 | b->commands = NULL; | |
30875e1c | 2102 | b->frame = 0; |
bd5635a1 RP |
2103 | |
2104 | /* Add this breakpoint to the end of the chain | |
2105 | so that a list of breakpoints will come out in order | |
2106 | of increasing numbers. */ | |
2107 | ||
2108 | b1 = breakpoint_chain; | |
2109 | if (b1 == 0) | |
2110 | breakpoint_chain = b; | |
2111 | else | |
2112 | { | |
2113 | while (b1->next) | |
2114 | b1 = b1->next; | |
2115 | b1->next = b; | |
2116 | } | |
2117 | ||
6b038bd9 | 2118 | check_duplicates (sal.pc, sal.section); |
6c803036 | 2119 | breakpoints_changed (); |
bd5635a1 RP |
2120 | |
2121 | return b; | |
2122 | } | |
2123 | ||
39ce6829 PS |
2124 | #ifdef GET_LONGJMP_TARGET |
2125 | ||
30875e1c | 2126 | static void |
cd10c7e3 | 2127 | create_longjmp_breakpoint (func_name) |
30875e1c | 2128 | char *func_name; |
30875e1c | 2129 | { |
30875e1c SG |
2130 | struct symtab_and_line sal; |
2131 | struct breakpoint *b; | |
2132 | ||
6b038bd9 | 2133 | INIT_SAL (&sal); /* initialize to zeroes */ |
30875e1c SG |
2134 | if (func_name != NULL) |
2135 | { | |
2136 | struct minimal_symbol *m; | |
2137 | ||
e8bf33c4 | 2138 | m = lookup_minimal_symbol_text (func_name, NULL, (struct objfile *)NULL); |
30875e1c | 2139 | if (m) |
2d313932 | 2140 | sal.pc = SYMBOL_VALUE_ADDRESS (m); |
30875e1c SG |
2141 | else |
2142 | return; | |
2143 | } | |
6b038bd9 | 2144 | sal.section = find_pc_overlay (sal.pc); |
cd10c7e3 | 2145 | b = set_raw_breakpoint (sal); |
30875e1c SG |
2146 | if (!b) return; |
2147 | ||
80ba48f5 | 2148 | b->type = func_name != NULL ? bp_longjmp : bp_longjmp_resume; |
30875e1c SG |
2149 | b->disposition = donttouch; |
2150 | b->enable = disabled; | |
2151 | b->silent = 1; | |
80ba48f5 SG |
2152 | if (func_name) |
2153 | b->addr_string = strsave(func_name); | |
2154 | b->number = internal_breakpoint_number--; | |
30875e1c | 2155 | } |
30875e1c | 2156 | |
39ce6829 PS |
2157 | #endif /* #ifdef GET_LONGJMP_TARGET */ |
2158 | ||
30875e1c SG |
2159 | /* Call this routine when stepping and nexting to enable a breakpoint if we do |
2160 | a longjmp(). When we hit that breakpoint, call | |
2161 | set_longjmp_resume_breakpoint() to figure out where we are going. */ | |
2162 | ||
2163 | void | |
2164 | enable_longjmp_breakpoint() | |
2165 | { | |
80ba48f5 SG |
2166 | register struct breakpoint *b; |
2167 | ||
2168 | ALL_BREAKPOINTS (b) | |
2169 | if (b->type == bp_longjmp) | |
9b280a7f JG |
2170 | { |
2171 | b->enable = enabled; | |
6b038bd9 | 2172 | check_duplicates (b->address, b->section); |
9b280a7f | 2173 | } |
30875e1c SG |
2174 | } |
2175 | ||
2176 | void | |
2177 | disable_longjmp_breakpoint() | |
2178 | { | |
80ba48f5 SG |
2179 | register struct breakpoint *b; |
2180 | ||
2181 | ALL_BREAKPOINTS (b) | |
9b280a7f | 2182 | if ( b->type == bp_longjmp |
80ba48f5 | 2183 | || b->type == bp_longjmp_resume) |
9b280a7f JG |
2184 | { |
2185 | b->enable = disabled; | |
6b038bd9 | 2186 | check_duplicates (b->address, b->section); |
9b280a7f | 2187 | } |
30875e1c SG |
2188 | } |
2189 | ||
27b6a1fa JL |
2190 | #ifdef SOLIB_ADD |
2191 | void | |
2192 | remove_solib_event_breakpoints () | |
2193 | { | |
fa3764e2 | 2194 | register struct breakpoint *b, *temp; |
27b6a1fa | 2195 | |
fa3764e2 | 2196 | ALL_BREAKPOINTS_SAFE (b, temp) |
27b6a1fa JL |
2197 | if (b->type == bp_shlib_event) |
2198 | delete_breakpoint (b); | |
2199 | } | |
2200 | ||
2201 | void | |
2202 | create_solib_event_breakpoint (address) | |
2203 | CORE_ADDR address; | |
2204 | { | |
2205 | struct breakpoint *b; | |
2206 | struct symtab_and_line sal; | |
2207 | ||
6b038bd9 | 2208 | INIT_SAL (&sal); /* initialize to zeroes */ |
27b6a1fa | 2209 | sal.pc = address; |
6b038bd9 | 2210 | sal.section = find_pc_overlay (sal.pc); |
27b6a1fa JL |
2211 | b = set_raw_breakpoint (sal); |
2212 | b->number = internal_breakpoint_number--; | |
2213 | b->disposition = donttouch; | |
2214 | b->type = bp_shlib_event; | |
2215 | } | |
fa3764e2 JL |
2216 | |
2217 | /* Try to reenable any breakpoints in shared libraries. */ | |
2218 | void | |
2219 | re_enable_breakpoints_in_shlibs () | |
2220 | { | |
2221 | struct breakpoint *b; | |
2222 | ||
2223 | ALL_BREAKPOINTS (b) | |
2224 | if (b->enable == shlib_disabled) | |
2225 | { | |
2226 | char buf[1]; | |
2227 | ||
2228 | /* Do not reenable the breakpoint if the shared library | |
2229 | is still not mapped in. */ | |
2230 | if (target_read_memory (b->address, buf, 1) == 0) | |
2231 | b->enable = enabled; | |
2232 | } | |
2233 | } | |
2234 | ||
27b6a1fa JL |
2235 | #endif |
2236 | ||
b607efe7 | 2237 | static int |
11054881 KH |
2238 | hw_breakpoint_used_count() |
2239 | { | |
2240 | register struct breakpoint *b; | |
2241 | int i = 0; | |
2242 | ||
2243 | ALL_BREAKPOINTS (b) | |
2244 | { | |
2245 | if (b->type == bp_hardware_breakpoint && b->enable == enabled) | |
2246 | i++; | |
2247 | } | |
2248 | ||
2249 | return i; | |
2250 | } | |
2251 | ||
b607efe7 | 2252 | static int |
11054881 KH |
2253 | hw_watchpoint_used_count(type, other_type_used) |
2254 | enum bptype type; | |
2255 | int *other_type_used; | |
2256 | { | |
2257 | register struct breakpoint *b; | |
2258 | int i = 0; | |
2259 | ||
2260 | *other_type_used = 0; | |
2261 | ALL_BREAKPOINTS (b) | |
2262 | { | |
2263 | if (b->enable == enabled) | |
2264 | { | |
2265 | if (b->type == type) i++; | |
2266 | else if ((b->type == bp_hardware_watchpoint || | |
2267 | b->type == bp_read_watchpoint || | |
2268 | b->type == bp_access_watchpoint) | |
2269 | && b->enable == enabled) | |
2270 | *other_type_used = 1; | |
2271 | } | |
2272 | } | |
2273 | return i; | |
2274 | } | |
2275 | ||
30875e1c SG |
2276 | /* Call this after hitting the longjmp() breakpoint. Use this to set a new |
2277 | breakpoint at the target of the jmp_buf. | |
80ba48f5 SG |
2278 | |
2279 | FIXME - This ought to be done by setting a temporary breakpoint that gets | |
2280 | deleted automatically... | |
30875e1c SG |
2281 | */ |
2282 | ||
2283 | void | |
2284 | set_longjmp_resume_breakpoint(pc, frame) | |
2285 | CORE_ADDR pc; | |
706dc3ce | 2286 | struct frame_info *frame; |
30875e1c | 2287 | { |
80ba48f5 SG |
2288 | register struct breakpoint *b; |
2289 | ||
2290 | ALL_BREAKPOINTS (b) | |
2291 | if (b->type == bp_longjmp_resume) | |
2292 | { | |
2293 | b->address = pc; | |
2294 | b->enable = enabled; | |
2295 | if (frame != NULL) | |
706dc3ce | 2296 | b->frame = frame->frame; |
80ba48f5 SG |
2297 | else |
2298 | b->frame = 0; | |
6b038bd9 | 2299 | check_duplicates (b->address, b->section); |
80ba48f5 SG |
2300 | return; |
2301 | } | |
30875e1c SG |
2302 | } |
2303 | ||
bd5635a1 RP |
2304 | /* Set a breakpoint that will evaporate an end of command |
2305 | at address specified by SAL. | |
2306 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
2307 | ||
30875e1c SG |
2308 | struct breakpoint * |
2309 | set_momentary_breakpoint (sal, frame, type) | |
bd5635a1 | 2310 | struct symtab_and_line sal; |
706dc3ce | 2311 | struct frame_info *frame; |
30875e1c | 2312 | enum bptype type; |
bd5635a1 RP |
2313 | { |
2314 | register struct breakpoint *b; | |
2315 | b = set_raw_breakpoint (sal); | |
30875e1c SG |
2316 | b->type = type; |
2317 | b->enable = enabled; | |
2318 | b->disposition = donttouch; | |
706dc3ce | 2319 | b->frame = (frame ? frame->frame : 0); |
2b576293 C |
2320 | |
2321 | /* If we're debugging a multi-threaded program, then we | |
2322 | want momentary breakpoints to be active in only a | |
2323 | single thread of control. */ | |
2324 | if (in_thread_list (inferior_pid)) | |
2325 | b->thread = pid_to_thread_id (inferior_pid); | |
2326 | ||
30875e1c | 2327 | return b; |
bd5635a1 RP |
2328 | } |
2329 | ||
bd5635a1 RP |
2330 | \f |
2331 | /* Tell the user we have just set a breakpoint B. */ | |
9f577285 | 2332 | |
bd5635a1 RP |
2333 | static void |
2334 | mention (b) | |
2335 | struct breakpoint *b; | |
2336 | { | |
9f577285 SS |
2337 | int say_where = 0; |
2338 | ||
d2a85f11 JMD |
2339 | /* FIXME: This is misplaced; mention() is called by things (like hitting a |
2340 | watchpoint) other than breakpoint creation. It should be possible to | |
2341 | clean this up and at the same time replace the random calls to | |
2342 | breakpoint_changed with this hook, as has already been done for | |
2343 | delete_breakpoint_hook and so on. */ | |
754e5da2 SG |
2344 | if (create_breakpoint_hook) |
2345 | create_breakpoint_hook (b); | |
2346 | ||
30875e1c | 2347 | switch (b->type) |
bd5635a1 | 2348 | { |
30875e1c | 2349 | case bp_watchpoint: |
bd5635a1 | 2350 | printf_filtered ("Watchpoint %d: ", b->number); |
199b2450 | 2351 | print_expression (b->exp, gdb_stdout); |
30875e1c | 2352 | break; |
999dd04b JL |
2353 | case bp_hardware_watchpoint: |
2354 | printf_filtered ("Hardware watchpoint %d: ", b->number); | |
2355 | print_expression (b->exp, gdb_stdout); | |
2356 | break; | |
11054881 KH |
2357 | case bp_read_watchpoint: |
2358 | printf_filtered ("Hardware read watchpoint %d: ", b->number); | |
2359 | print_expression (b->exp, gdb_stdout); | |
2360 | break; | |
2361 | case bp_access_watchpoint: | |
2362 | printf_filtered ("Hardware access(read/write) watchpoint %d: ",b->number); | |
2363 | print_expression (b->exp, gdb_stdout); | |
2364 | break; | |
30875e1c | 2365 | case bp_breakpoint: |
9f577285 SS |
2366 | printf_filtered ("Breakpoint %d", b->number); |
2367 | say_where = 1; | |
51b57ded | 2368 | break; |
11054881 | 2369 | case bp_hardware_breakpoint: |
9f577285 SS |
2370 | printf_filtered ("Hardware assisted breakpoint %d", b->number); |
2371 | say_where = 1; | |
11054881 | 2372 | break; |
51b57ded FF |
2373 | case bp_until: |
2374 | case bp_finish: | |
2375 | case bp_longjmp: | |
2376 | case bp_longjmp_resume: | |
fee933f1 | 2377 | case bp_step_resume: |
bcc37718 | 2378 | case bp_through_sigtramp: |
199b2450 | 2379 | case bp_call_dummy: |
999dd04b | 2380 | case bp_watchpoint_scope: |
fa3764e2 | 2381 | case bp_shlib_event: |
51b57ded | 2382 | break; |
bd5635a1 | 2383 | } |
9f577285 SS |
2384 | if (say_where) |
2385 | { | |
2386 | if (addressprint || b->source_file == NULL) | |
2387 | { | |
2388 | printf_filtered (" at "); | |
2389 | print_address_numeric (b->address, 1, gdb_stdout); | |
2390 | } | |
2391 | if (b->source_file) | |
2392 | printf_filtered (": file %s, line %d.", | |
2393 | b->source_file, b->line_number); | |
2394 | } | |
bd5635a1 RP |
2395 | printf_filtered ("\n"); |
2396 | } | |
2397 | ||
bd5635a1 RP |
2398 | \f |
2399 | /* Set a breakpoint according to ARG (function, linenum or *address) | |
11054881 KH |
2400 | flag: first bit : 0 non-temporary, 1 temporary. |
2401 | second bit : 0 normal breakpoint, 1 hardware breakpoint. */ | |
bd5635a1 RP |
2402 | |
2403 | static void | |
11054881 | 2404 | break_command_1 (arg, flag, from_tty) |
bd5635a1 | 2405 | char *arg; |
11054881 | 2406 | int flag, from_tty; |
bd5635a1 | 2407 | { |
11054881 | 2408 | int tempflag, hardwareflag; |
bd5635a1 RP |
2409 | struct symtabs_and_lines sals; |
2410 | struct symtab_and_line sal; | |
2411 | register struct expression *cond = 0; | |
2412 | register struct breakpoint *b; | |
2413 | ||
2414 | /* Pointers in arg to the start, and one past the end, of the condition. */ | |
2415 | char *cond_start = NULL; | |
fee933f1 | 2416 | char *cond_end = NULL; |
bd5635a1 RP |
2417 | /* Pointers in arg to the start, and one past the end, |
2418 | of the address part. */ | |
2419 | char *addr_start = NULL; | |
fee933f1 | 2420 | char *addr_end = NULL; |
d889f6b7 | 2421 | struct cleanup *old_chain; |
fee933f1 | 2422 | struct cleanup *canonical_strings_chain = NULL; |
d889f6b7 | 2423 | char **canonical = (char **)NULL; |
bd5635a1 | 2424 | int i; |
199b2450 | 2425 | int thread; |
bd5635a1 | 2426 | |
e8bf33c4 JK |
2427 | hardwareflag = flag & BP_HARDWAREFLAG; |
2428 | tempflag = flag & BP_TEMPFLAG; | |
11054881 | 2429 | |
bd5635a1 RP |
2430 | sals.sals = NULL; |
2431 | sals.nelts = 0; | |
2432 | ||
6b038bd9 | 2433 | INIT_SAL (&sal); /* initialize to zeroes */ |
bd5635a1 RP |
2434 | |
2435 | /* If no arg given, or if first arg is 'if ', use the default breakpoint. */ | |
2436 | ||
2437 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' | |
2438 | && (arg[2] == ' ' || arg[2] == '\t'))) | |
2439 | { | |
2440 | if (default_breakpoint_valid) | |
2441 | { | |
2442 | sals.sals = (struct symtab_and_line *) | |
2443 | xmalloc (sizeof (struct symtab_and_line)); | |
2444 | sal.pc = default_breakpoint_address; | |
2445 | sal.line = default_breakpoint_line; | |
2446 | sal.symtab = default_breakpoint_symtab; | |
6b038bd9 | 2447 | sal.section = find_pc_overlay (sal.pc); |
bd5635a1 RP |
2448 | sals.sals[0] = sal; |
2449 | sals.nelts = 1; | |
2450 | } | |
2451 | else | |
2452 | error ("No default breakpoint address now."); | |
2453 | } | |
2454 | else | |
2455 | { | |
2456 | addr_start = arg; | |
2457 | ||
2458 | /* Force almost all breakpoints to be in terms of the | |
2459 | current_source_symtab (which is decode_line_1's default). This | |
2460 | should produce the results we want almost all of the time while | |
2461 | leaving default_breakpoint_* alone. */ | |
2462 | if (default_breakpoint_valid | |
2463 | && (!current_source_symtab | |
2464 | || (arg && (*arg == '+' || *arg == '-')))) | |
2465 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
d889f6b7 | 2466 | default_breakpoint_line, &canonical); |
bd5635a1 | 2467 | else |
d889f6b7 | 2468 | sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0, &canonical); |
bd5635a1 RP |
2469 | |
2470 | addr_end = arg; | |
2471 | } | |
2472 | ||
2473 | if (! sals.nelts) | |
2474 | return; | |
2475 | ||
d889f6b7 JK |
2476 | /* Make sure that all storage allocated in decode_line_1 gets freed in case |
2477 | the following `for' loop errors out. */ | |
2478 | old_chain = make_cleanup (free, sals.sals); | |
2479 | if (canonical != (char **)NULL) | |
2480 | { | |
2481 | make_cleanup (free, canonical); | |
2482 | canonical_strings_chain = make_cleanup (null_cleanup, 0); | |
2483 | for (i = 0; i < sals.nelts; i++) | |
2484 | { | |
2485 | if (canonical[i] != NULL) | |
2486 | make_cleanup (free, canonical[i]); | |
2487 | } | |
2488 | } | |
2489 | ||
199b2450 TL |
2490 | thread = -1; /* No specific thread yet */ |
2491 | ||
30875e1c SG |
2492 | /* Resolve all line numbers to PC's, and verify that conditions |
2493 | can be parsed, before setting any breakpoints. */ | |
bd5635a1 RP |
2494 | for (i = 0; i < sals.nelts; i++) |
2495 | { | |
199b2450 TL |
2496 | char *tok, *end_tok; |
2497 | int toklen; | |
2498 | ||
30875e1c | 2499 | resolve_sal_pc (&sals.sals[i]); |
bd5635a1 | 2500 | |
199b2450 TL |
2501 | tok = arg; |
2502 | ||
2503 | while (tok && *tok) | |
bd5635a1 | 2504 | { |
199b2450 TL |
2505 | while (*tok == ' ' || *tok == '\t') |
2506 | tok++; | |
2507 | ||
2508 | end_tok = tok; | |
2509 | ||
2510 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
2511 | end_tok++; | |
2512 | ||
2513 | toklen = end_tok - tok; | |
2514 | ||
2515 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
2516 | { | |
2517 | tok = cond_start = end_tok + 1; | |
2518 | cond = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
2519 | cond_end = tok; | |
2520 | } | |
2521 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
bd5635a1 | 2522 | { |
199b2450 TL |
2523 | char *tmptok; |
2524 | ||
2525 | tok = end_tok + 1; | |
2526 | tmptok = tok; | |
2527 | thread = strtol (tok, &tok, 0); | |
2528 | if (tok == tmptok) | |
2529 | error ("Junk after thread keyword."); | |
2530 | if (!valid_thread_id (thread)) | |
2531 | error ("Unknown thread %d\n", thread); | |
bd5635a1 RP |
2532 | } |
2533 | else | |
2534 | error ("Junk at end of arguments."); | |
2535 | } | |
bd5635a1 | 2536 | } |
11054881 KH |
2537 | if (hardwareflag) |
2538 | { | |
557f3a0e SS |
2539 | int i, target_resources_ok; |
2540 | ||
2541 | i = hw_breakpoint_used_count (); | |
2542 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
2543 | bp_hardware_breakpoint, i + sals.nelts, 0); | |
11054881 KH |
2544 | if (target_resources_ok == 0) |
2545 | error ("No hardware breakpoint support in the target."); | |
2546 | else if (target_resources_ok < 0) | |
2547 | error ("Hardware breakpoints used exceeds limit."); | |
2548 | } | |
bd5635a1 | 2549 | |
d889f6b7 JK |
2550 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
2551 | if (canonical != (char **)NULL) | |
2552 | discard_cleanups (canonical_strings_chain); | |
2553 | ||
30875e1c | 2554 | /* Now set all the breakpoints. */ |
bd5635a1 RP |
2555 | for (i = 0; i < sals.nelts; i++) |
2556 | { | |
2557 | sal = sals.sals[i]; | |
2558 | ||
2559 | if (from_tty) | |
6b038bd9 | 2560 | describe_other_breakpoints (sal.pc, sal.section); |
bd5635a1 RP |
2561 | |
2562 | b = set_raw_breakpoint (sal); | |
2563 | set_breakpoint_count (breakpoint_count + 1); | |
2564 | b->number = breakpoint_count; | |
11054881 | 2565 | b->type = hardwareflag ? bp_hardware_breakpoint : bp_breakpoint; |
bd5635a1 | 2566 | b->cond = cond; |
199b2450 | 2567 | b->thread = thread; |
0a97f6c4 | 2568 | |
d889f6b7 JK |
2569 | /* If a canonical line spec is needed use that instead of the |
2570 | command string. */ | |
2571 | if (canonical != (char **)NULL && canonical[i] != NULL) | |
2572 | b->addr_string = canonical[i]; | |
2573 | else if (addr_start) | |
bd5635a1 RP |
2574 | b->addr_string = savestring (addr_start, addr_end - addr_start); |
2575 | if (cond_start) | |
2576 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
2577 | ||
30875e1c | 2578 | b->enable = enabled; |
e8bf33c4 | 2579 | b->disposition = tempflag ? del : donttouch; |
bd5635a1 RP |
2580 | mention (b); |
2581 | } | |
2582 | ||
2583 | if (sals.nelts > 1) | |
2584 | { | |
833e0d94 JK |
2585 | printf_filtered ("Multiple breakpoints were set.\n"); |
2586 | printf_filtered ("Use the \"delete\" command to delete unwanted breakpoints.\n"); | |
bd5635a1 | 2587 | } |
d889f6b7 | 2588 | do_cleanups (old_chain); |
bd5635a1 RP |
2589 | } |
2590 | ||
30875e1c SG |
2591 | /* Helper function for break_command_1 and disassemble_command. */ |
2592 | ||
2593 | void | |
2594 | resolve_sal_pc (sal) | |
2595 | struct symtab_and_line *sal; | |
2596 | { | |
2597 | CORE_ADDR pc; | |
2598 | ||
6b038bd9 | 2599 | if (sal->pc == 0 && sal->symtab != NULL) |
30875e1c | 2600 | { |
895cc8ab | 2601 | if (!find_line_pc (sal->symtab, sal->line, &pc)) |
30875e1c SG |
2602 | error ("No line %d in file \"%s\".", |
2603 | sal->line, sal->symtab->filename); | |
2604 | sal->pc = pc; | |
2605 | } | |
6b038bd9 DT |
2606 | |
2607 | if (sal->section == 0 && sal->symtab != NULL) | |
2608 | { | |
2609 | struct blockvector *bv; | |
2610 | struct block *b; | |
2611 | struct symbol *sym; | |
2612 | int index; | |
2613 | ||
2614 | bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab); | |
895cc8ab | 2615 | if (bv != NULL) |
6b038bd9 | 2616 | { |
895cc8ab KS |
2617 | b = BLOCKVECTOR_BLOCK (bv, index); |
2618 | sym = block_function (b); | |
2619 | if (sym != NULL) | |
2620 | { | |
2621 | fixup_symbol_section (sym, sal->symtab->objfile); | |
6ee2da94 FCE |
2622 | sal->section = SYMBOL_BFD_SECTION (sym); |
2623 | } | |
2624 | else | |
2625 | { | |
2626 | /* It really is worthwhile to have the section, so we'll just | |
2627 | have to look harder. This case can be executed if we have | |
2628 | line numbers but no functions (as can happen in assembly | |
2629 | source). */ | |
2630 | ||
2631 | struct minimal_symbol *msym; | |
2632 | ||
2633 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
2634 | if (msym) | |
2635 | sal->section = SYMBOL_BFD_SECTION (msym); | |
895cc8ab | 2636 | } |
6b038bd9 DT |
2637 | } |
2638 | } | |
30875e1c SG |
2639 | } |
2640 | ||
bd5635a1 RP |
2641 | void |
2642 | break_command (arg, from_tty) | |
2643 | char *arg; | |
2644 | int from_tty; | |
2645 | { | |
2646 | break_command_1 (arg, 0, from_tty); | |
2647 | } | |
2648 | ||
2649 | static void | |
2650 | tbreak_command (arg, from_tty) | |
2651 | char *arg; | |
2652 | int from_tty; | |
2653 | { | |
11054881 KH |
2654 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
2655 | } | |
2656 | ||
2657 | static void | |
2658 | hbreak_command (arg, from_tty) | |
2659 | char *arg; | |
2660 | int from_tty; | |
2661 | { | |
2662 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); | |
2663 | } | |
2664 | ||
2665 | static void | |
2666 | thbreak_command (arg, from_tty) | |
2667 | char *arg; | |
2668 | int from_tty; | |
2669 | { | |
2670 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); | |
bd5635a1 RP |
2671 | } |
2672 | ||
bdbd5f50 | 2673 | /* ARGSUSED */ |
11054881 KH |
2674 | /* accessflag: 0: watch write, 1: watch read, 2: watch access(read or write) |
2675 | */ | |
bd5635a1 | 2676 | static void |
11054881 | 2677 | watch_command_1 (arg, accessflag, from_tty) |
bd5635a1 | 2678 | char *arg; |
11054881 | 2679 | int accessflag; |
bd5635a1 RP |
2680 | int from_tty; |
2681 | { | |
2682 | struct breakpoint *b; | |
2683 | struct symtab_and_line sal; | |
f266e564 JK |
2684 | struct expression *exp; |
2685 | struct block *exp_valid_block; | |
11054881 | 2686 | struct value *val, *mark; |
b607efe7 FF |
2687 | struct frame_info *frame; |
2688 | struct frame_info *prev_frame = NULL; | |
11054881 KH |
2689 | char *exp_start = NULL; |
2690 | char *exp_end = NULL; | |
2691 | char *tok, *end_tok; | |
2692 | int toklen; | |
2693 | char *cond_start = NULL; | |
2694 | char *cond_end = NULL; | |
2695 | struct expression *cond = NULL; | |
6b038bd9 | 2696 | int i, other_type_used, target_resources_ok = 0; |
11054881 KH |
2697 | enum bptype bp_type; |
2698 | int mem_cnt = 0; | |
bd5635a1 | 2699 | |
6b038bd9 | 2700 | INIT_SAL (&sal); /* initialize to zeroes */ |
bd5635a1 | 2701 | |
f266e564 JK |
2702 | /* Parse arguments. */ |
2703 | innermost_block = NULL; | |
11054881 KH |
2704 | exp_start = arg; |
2705 | exp = parse_exp_1 (&arg, 0, 0); | |
2706 | exp_end = arg; | |
f266e564 | 2707 | exp_valid_block = innermost_block; |
11054881 | 2708 | mark = value_mark (); |
f266e564 JK |
2709 | val = evaluate_expression (exp); |
2710 | release_value (val); | |
2d313932 JK |
2711 | if (VALUE_LAZY (val)) |
2712 | value_fetch_lazy (val); | |
f266e564 | 2713 | |
11054881 KH |
2714 | tok = arg; |
2715 | while (*tok == ' ' || *tok == '\t') | |
2716 | tok++; | |
2717 | end_tok = tok; | |
2718 | ||
2719 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
2720 | end_tok++; | |
2721 | ||
2722 | toklen = end_tok - tok; | |
2723 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
2724 | { | |
2725 | tok = cond_start = end_tok + 1; | |
2726 | cond = parse_exp_1 (&tok, 0, 0); | |
2727 | cond_end = tok; | |
2728 | } | |
2729 | if (*tok) | |
2730 | error("Junk at end of command."); | |
2731 | ||
2732 | if (accessflag == 1) bp_type = bp_read_watchpoint; | |
2733 | else if (accessflag == 2) bp_type = bp_access_watchpoint; | |
2734 | else bp_type = bp_hardware_watchpoint; | |
2735 | ||
2736 | mem_cnt = can_use_hardware_watchpoint (val); | |
2737 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
2738 | error ("Expression cannot be implemented with read/access watchpoint."); | |
2739 | if (mem_cnt != 0) { | |
2740 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
2741 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
2742 | bp_type, i + mem_cnt, other_type_used); | |
2743 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) | |
2744 | error ("Target does not have this type of hardware watchpoint support."); | |
2745 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) | |
2746 | error ("Target resources have been allocated for other types of watchpoints."); | |
2747 | } | |
2748 | ||
f266e564 | 2749 | /* Now set up the breakpoint. */ |
bd5635a1 RP |
2750 | b = set_raw_breakpoint (sal); |
2751 | set_breakpoint_count (breakpoint_count + 1); | |
2752 | b->number = breakpoint_count; | |
30875e1c | 2753 | b->disposition = donttouch; |
f266e564 JK |
2754 | b->exp = exp; |
2755 | b->exp_valid_block = exp_valid_block; | |
11054881 | 2756 | b->exp_string = savestring (exp_start, exp_end - exp_start); |
f266e564 | 2757 | b->val = val; |
11054881 KH |
2758 | b->cond = cond; |
2759 | if (cond_start) | |
2760 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
2761 | else | |
2762 | b->cond_string = 0; | |
2763 | ||
999dd04b JL |
2764 | frame = block_innermost_frame (exp_valid_block); |
2765 | if (frame) | |
2766 | { | |
2767 | prev_frame = get_prev_frame (frame); | |
706dc3ce | 2768 | b->watchpoint_frame = frame->frame; |
999dd04b JL |
2769 | } |
2770 | else | |
9e8db445 | 2771 | b->watchpoint_frame = (CORE_ADDR)0; |
999dd04b | 2772 | |
11054881 KH |
2773 | if (mem_cnt && target_resources_ok > 0) |
2774 | b->type = bp_type; | |
999dd04b JL |
2775 | else |
2776 | b->type = bp_watchpoint; | |
2777 | ||
2778 | /* If the expression is "local", then set up a "watchpoint scope" | |
2779 | breakpoint at the point where we've left the scope of the watchpoint | |
2780 | expression. */ | |
2781 | if (innermost_block) | |
2782 | { | |
999dd04b JL |
2783 | if (prev_frame) |
2784 | { | |
6b038bd9 DT |
2785 | struct breakpoint *scope_breakpoint; |
2786 | struct symtab_and_line scope_sal; | |
2787 | ||
2788 | INIT_SAL (&scope_sal); /* initialize to zeroes */ | |
2789 | scope_sal.pc = get_frame_pc (prev_frame); | |
2790 | scope_sal.section = find_pc_overlay (scope_sal.pc); | |
2791 | ||
999dd04b JL |
2792 | scope_breakpoint = set_raw_breakpoint (scope_sal); |
2793 | set_breakpoint_count (breakpoint_count + 1); | |
2794 | scope_breakpoint->number = breakpoint_count; | |
2795 | ||
2796 | scope_breakpoint->type = bp_watchpoint_scope; | |
2797 | scope_breakpoint->enable = enabled; | |
2798 | ||
2799 | /* Automatically delete the breakpoint when it hits. */ | |
e8bf33c4 | 2800 | scope_breakpoint->disposition = del; |
999dd04b JL |
2801 | |
2802 | /* Only break in the proper frame (help with recursion). */ | |
2803 | scope_breakpoint->frame = prev_frame->frame; | |
2804 | ||
2805 | /* Set the address at which we will stop. */ | |
2806 | scope_breakpoint->address = get_frame_pc (prev_frame); | |
2807 | ||
2808 | /* The scope breakpoint is related to the watchpoint. We | |
2809 | will need to act on them together. */ | |
2810 | b->related_breakpoint = scope_breakpoint; | |
2811 | } | |
2812 | } | |
11054881 | 2813 | value_free_to_mark (mark); |
bd5635a1 RP |
2814 | mention (b); |
2815 | } | |
999dd04b | 2816 | |
11054881 KH |
2817 | /* Return count of locations need to be watched and can be handled |
2818 | in hardware. If the watchpoint can not be handled | |
999dd04b JL |
2819 | in hardware return zero. */ |
2820 | ||
2821 | static int | |
11054881 KH |
2822 | can_use_hardware_watchpoint (v) |
2823 | struct value *v; | |
999dd04b | 2824 | { |
11054881 | 2825 | int found_memory_cnt = 0; |
999dd04b JL |
2826 | |
2827 | /* Make sure all the intermediate values are in memory. Also make sure | |
2828 | we found at least one memory expression. Guards against watch 0x12345, | |
2829 | which is meaningless, but could cause errors if one tries to insert a | |
2830 | hardware watchpoint for the constant expression. */ | |
11054881 | 2831 | for ( ; v; v = v->next) |
999dd04b | 2832 | { |
11054881 KH |
2833 | if (v->lval == lval_memory) |
2834 | { | |
2835 | if (TYPE_LENGTH (VALUE_TYPE (v)) <= REGISTER_SIZE) | |
2836 | found_memory_cnt++; | |
2837 | } | |
2838 | else if (v->lval != not_lval && v->modifiable == 0) | |
999dd04b | 2839 | return 0; |
999dd04b JL |
2840 | } |
2841 | ||
2842 | /* The expression itself looks suitable for using a hardware | |
2843 | watchpoint, but give the target machine a chance to reject it. */ | |
11054881 KH |
2844 | return found_memory_cnt; |
2845 | } | |
2846 | ||
2847 | static void watch_command (arg, from_tty) | |
2848 | char *arg; | |
2849 | int from_tty; | |
2850 | { | |
2851 | watch_command_1 (arg, 0, from_tty); | |
2852 | } | |
2853 | ||
2854 | static void rwatch_command (arg, from_tty) | |
2855 | char *arg; | |
2856 | int from_tty; | |
2857 | { | |
2858 | watch_command_1 (arg, 1, from_tty); | |
2859 | } | |
2860 | ||
2861 | static void awatch_command (arg, from_tty) | |
2862 | char *arg; | |
2863 | int from_tty; | |
2864 | { | |
2865 | watch_command_1 (arg, 2, from_tty); | |
999dd04b JL |
2866 | } |
2867 | ||
bd5635a1 | 2868 | \f |
706dc3ce JL |
2869 | /* Helper routine for the until_command routine in infcmd.c. Here |
2870 | because it uses the mechanisms of breakpoints. */ | |
2871 | ||
bdbd5f50 | 2872 | /* ARGSUSED */ |
bd5635a1 RP |
2873 | void |
2874 | until_break_command (arg, from_tty) | |
2875 | char *arg; | |
2876 | int from_tty; | |
2877 | { | |
2878 | struct symtabs_and_lines sals; | |
2879 | struct symtab_and_line sal; | |
706dc3ce | 2880 | struct frame_info *prev_frame = get_prev_frame (selected_frame); |
30875e1c SG |
2881 | struct breakpoint *breakpoint; |
2882 | struct cleanup *old_chain; | |
bd5635a1 RP |
2883 | |
2884 | clear_proceed_status (); | |
2885 | ||
2886 | /* Set a breakpoint where the user wants it and at return from | |
2887 | this function */ | |
2888 | ||
2889 | if (default_breakpoint_valid) | |
2890 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
d889f6b7 | 2891 | default_breakpoint_line, (char ***)NULL); |
bd5635a1 | 2892 | else |
d889f6b7 | 2893 | sals = decode_line_1 (&arg, 1, (struct symtab *)NULL, 0, (char ***)NULL); |
bd5635a1 RP |
2894 | |
2895 | if (sals.nelts != 1) | |
2896 | error ("Couldn't get information on specified line."); | |
2897 | ||
2898 | sal = sals.sals[0]; | |
c8950965 | 2899 | free ((PTR)sals.sals); /* malloc'd, so freed */ |
bd5635a1 RP |
2900 | |
2901 | if (*arg) | |
2902 | error ("Junk at end of arguments."); | |
2903 | ||
30875e1c | 2904 | resolve_sal_pc (&sal); |
bd5635a1 | 2905 | |
30875e1c | 2906 | breakpoint = set_momentary_breakpoint (sal, selected_frame, bp_until); |
bd5635a1 | 2907 | |
ad3b8c4a | 2908 | old_chain = make_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint); |
30875e1c | 2909 | |
bd5635a1 RP |
2910 | /* Keep within the current frame */ |
2911 | ||
2912 | if (prev_frame) | |
2913 | { | |
706dc3ce JL |
2914 | sal = find_pc_line (prev_frame->pc, 0); |
2915 | sal.pc = prev_frame->pc; | |
30875e1c | 2916 | breakpoint = set_momentary_breakpoint (sal, prev_frame, bp_until); |
ad3b8c4a | 2917 | make_cleanup ((make_cleanup_func) delete_breakpoint, breakpoint); |
bd5635a1 RP |
2918 | } |
2919 | ||
d7e7e851 | 2920 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
30875e1c | 2921 | do_cleanups(old_chain); |
bd5635a1 RP |
2922 | } |
2923 | \f | |
bdbd5f50 JG |
2924 | #if 0 |
2925 | /* These aren't used; I don't konw what they were for. */ | |
bd5635a1 RP |
2926 | /* Set a breakpoint at the catch clause for NAME. */ |
2927 | static int | |
2928 | catch_breakpoint (name) | |
2929 | char *name; | |
2930 | { | |
2931 | } | |
2932 | ||
2933 | static int | |
2934 | disable_catch_breakpoint () | |
2935 | { | |
2936 | } | |
2937 | ||
2938 | static int | |
2939 | delete_catch_breakpoint () | |
2940 | { | |
2941 | } | |
2942 | ||
2943 | static int | |
2944 | enable_catch_breakpoint () | |
2945 | { | |
2946 | } | |
bdbd5f50 | 2947 | #endif /* 0 */ |
bd5635a1 RP |
2948 | |
2949 | struct sal_chain | |
2950 | { | |
2951 | struct sal_chain *next; | |
2952 | struct symtab_and_line sal; | |
2953 | }; | |
2954 | ||
bdbd5f50 JG |
2955 | #if 0 |
2956 | /* This isn't used; I don't know what it was for. */ | |
bd5635a1 RP |
2957 | /* For each catch clause identified in ARGS, run FUNCTION |
2958 | with that clause as an argument. */ | |
2959 | static struct symtabs_and_lines | |
2960 | map_catch_names (args, function) | |
2961 | char *args; | |
2962 | int (*function)(); | |
2963 | { | |
2964 | register char *p = args; | |
2965 | register char *p1; | |
2966 | struct symtabs_and_lines sals; | |
bdbd5f50 | 2967 | #if 0 |
bd5635a1 | 2968 | struct sal_chain *sal_chain = 0; |
bdbd5f50 | 2969 | #endif |
bd5635a1 RP |
2970 | |
2971 | if (p == 0) | |
2972 | error_no_arg ("one or more catch names"); | |
2973 | ||
2974 | sals.nelts = 0; | |
2975 | sals.sals = NULL; | |
2976 | ||
2977 | while (*p) | |
2978 | { | |
2979 | p1 = p; | |
2980 | /* Don't swallow conditional part. */ | |
2981 | if (p1[0] == 'i' && p1[1] == 'f' | |
2982 | && (p1[2] == ' ' || p1[2] == '\t')) | |
2983 | break; | |
2984 | ||
2985 | if (isalpha (*p1)) | |
2986 | { | |
2987 | p1++; | |
2988 | while (isalnum (*p1) || *p1 == '_' || *p1 == '$') | |
2989 | p1++; | |
2990 | } | |
2991 | ||
2992 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
2993 | error ("Arguments must be catch names."); | |
2994 | ||
2995 | *p1 = 0; | |
2996 | #if 0 | |
2997 | if (function (p)) | |
2998 | { | |
6b038bd9 DT |
2999 | struct sal_chain *next = (struct sal_chain *) |
3000 | alloca (sizeof (struct sal_chain)); | |
bd5635a1 RP |
3001 | next->next = sal_chain; |
3002 | next->sal = get_catch_sal (p); | |
3003 | sal_chain = next; | |
3004 | goto win; | |
3005 | } | |
3006 | #endif | |
199b2450 | 3007 | printf_unfiltered ("No catch clause for exception %s.\n", p); |
bdbd5f50 | 3008 | #if 0 |
bd5635a1 | 3009 | win: |
bdbd5f50 | 3010 | #endif |
bd5635a1 RP |
3011 | p = p1; |
3012 | while (*p == ' ' || *p == '\t') p++; | |
3013 | } | |
3014 | } | |
bdbd5f50 | 3015 | #endif /* 0 */ |
bd5635a1 RP |
3016 | |
3017 | /* This shares a lot of code with `print_frame_label_vars' from stack.c. */ | |
3018 | ||
3019 | static struct symtabs_and_lines | |
3020 | get_catch_sals (this_level_only) | |
3021 | int this_level_only; | |
3022 | { | |
bd5635a1 | 3023 | register struct blockvector *bl; |
777bef06 | 3024 | register struct block *block; |
bd5635a1 | 3025 | int index, have_default = 0; |
777bef06 | 3026 | CORE_ADDR pc; |
bd5635a1 RP |
3027 | struct symtabs_and_lines sals; |
3028 | struct sal_chain *sal_chain = 0; | |
3029 | char *blocks_searched; | |
3030 | ||
777bef06 JK |
3031 | /* Not sure whether an error message is always the correct response, |
3032 | but it's better than a core dump. */ | |
3033 | if (selected_frame == NULL) | |
3034 | error ("No selected frame."); | |
3035 | block = get_frame_block (selected_frame); | |
706dc3ce | 3036 | pc = selected_frame->pc; |
777bef06 | 3037 | |
bd5635a1 RP |
3038 | sals.nelts = 0; |
3039 | sals.sals = NULL; | |
3040 | ||
3041 | if (block == 0) | |
3042 | error ("No symbol table info available.\n"); | |
3043 | ||
3044 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
3045 | blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
4ed3a9ea | 3046 | memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); |
bd5635a1 RP |
3047 | |
3048 | while (block != 0) | |
3049 | { | |
3050 | CORE_ADDR end = BLOCK_END (block) - 4; | |
3051 | int last_index; | |
3052 | ||
3053 | if (bl != blockvector_for_pc (end, &index)) | |
3054 | error ("blockvector blotch"); | |
3055 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
3056 | error ("blockvector botch"); | |
3057 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
3058 | index += 1; | |
3059 | ||
3060 | /* Don't print out blocks that have gone by. */ | |
3061 | while (index < last_index | |
3062 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
3063 | index++; | |
3064 | ||
3065 | while (index < last_index | |
3066 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
3067 | { | |
3068 | if (blocks_searched[index] == 0) | |
3069 | { | |
3070 | struct block *b = BLOCKVECTOR_BLOCK (bl, index); | |
3071 | int nsyms; | |
3072 | register int i; | |
3073 | register struct symbol *sym; | |
3074 | ||
3075 | nsyms = BLOCK_NSYMS (b); | |
3076 | ||
3077 | for (i = 0; i < nsyms; i++) | |
3078 | { | |
3079 | sym = BLOCK_SYM (b, i); | |
2d313932 | 3080 | if (STREQ (SYMBOL_NAME (sym), "default")) |
bd5635a1 RP |
3081 | { |
3082 | if (have_default) | |
3083 | continue; | |
3084 | have_default = 1; | |
3085 | } | |
3086 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
3087 | { | |
3088 | struct sal_chain *next = (struct sal_chain *) | |
3089 | alloca (sizeof (struct sal_chain)); | |
3090 | next->next = sal_chain; | |
3091 | next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), 0); | |
3092 | sal_chain = next; | |
3093 | } | |
3094 | } | |
3095 | blocks_searched[index] = 1; | |
3096 | } | |
3097 | index++; | |
3098 | } | |
3099 | if (have_default) | |
3100 | break; | |
3101 | if (sal_chain && this_level_only) | |
3102 | break; | |
3103 | ||
3104 | /* After handling the function's top-level block, stop. | |
3105 | Don't continue to its superblock, the block of | |
3106 | per-file symbols. */ | |
3107 | if (BLOCK_FUNCTION (block)) | |
3108 | break; | |
3109 | block = BLOCK_SUPERBLOCK (block); | |
3110 | } | |
3111 | ||
3112 | if (sal_chain) | |
3113 | { | |
3114 | struct sal_chain *tmp_chain; | |
3115 | ||
3116 | /* Count the number of entries. */ | |
3117 | for (index = 0, tmp_chain = sal_chain; tmp_chain; | |
3118 | tmp_chain = tmp_chain->next) | |
3119 | index++; | |
3120 | ||
3121 | sals.nelts = index; | |
3122 | sals.sals = (struct symtab_and_line *) | |
3123 | xmalloc (index * sizeof (struct symtab_and_line)); | |
3124 | for (index = 0; sal_chain; sal_chain = sal_chain->next, index++) | |
3125 | sals.sals[index] = sal_chain->sal; | |
3126 | } | |
3127 | ||
3128 | return sals; | |
3129 | } | |
3130 | ||
3131 | /* Commands to deal with catching exceptions. */ | |
3132 | ||
30875e1c | 3133 | static void |
bd5635a1 RP |
3134 | catch_command_1 (arg, tempflag, from_tty) |
3135 | char *arg; | |
3136 | int tempflag; | |
3137 | int from_tty; | |
3138 | { | |
3139 | /* First, translate ARG into something we can deal with in terms | |
3140 | of breakpoints. */ | |
3141 | ||
3142 | struct symtabs_and_lines sals; | |
3143 | struct symtab_and_line sal; | |
3144 | register struct expression *cond = 0; | |
3145 | register struct breakpoint *b; | |
3146 | char *save_arg; | |
3147 | int i; | |
bd5635a1 | 3148 | |
6b038bd9 | 3149 | INIT_SAL (&sal); /* initialize to zeroes */ |
bd5635a1 RP |
3150 | |
3151 | /* If no arg given, or if first arg is 'if ', all active catch clauses | |
3152 | are breakpointed. */ | |
3153 | ||
3154 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' | |
3155 | && (arg[2] == ' ' || arg[2] == '\t'))) | |
3156 | { | |
3157 | /* Grab all active catch clauses. */ | |
3158 | sals = get_catch_sals (0); | |
3159 | } | |
3160 | else | |
3161 | { | |
3162 | /* Grab selected catch clauses. */ | |
fe675038 | 3163 | error ("catch NAME not implemented"); |
bdbd5f50 JG |
3164 | #if 0 |
3165 | /* This isn't used; I don't know what it was for. */ | |
bd5635a1 | 3166 | sals = map_catch_names (arg, catch_breakpoint); |
bdbd5f50 | 3167 | #endif |
bd5635a1 RP |
3168 | } |
3169 | ||
3170 | if (! sals.nelts) | |
3171 | return; | |
3172 | ||
3173 | save_arg = arg; | |
3174 | for (i = 0; i < sals.nelts; i++) | |
3175 | { | |
30875e1c | 3176 | resolve_sal_pc (&sals.sals[i]); |
bd5635a1 RP |
3177 | |
3178 | while (arg && *arg) | |
3179 | { | |
3180 | if (arg[0] == 'i' && arg[1] == 'f' | |
3181 | && (arg[2] == ' ' || arg[2] == '\t')) | |
30875e1c SG |
3182 | cond = parse_exp_1 ((arg += 2, &arg), |
3183 | block_for_pc (sals.sals[i].pc), 0); | |
bd5635a1 RP |
3184 | else |
3185 | error ("Junk at end of arguments."); | |
3186 | } | |
3187 | arg = save_arg; | |
bd5635a1 RP |
3188 | } |
3189 | ||
3190 | for (i = 0; i < sals.nelts; i++) | |
3191 | { | |
3192 | sal = sals.sals[i]; | |
3193 | ||
3194 | if (from_tty) | |
6b038bd9 | 3195 | describe_other_breakpoints (sal.pc, sal.section); |
bd5635a1 RP |
3196 | |
3197 | b = set_raw_breakpoint (sal); | |
30875e1c SG |
3198 | set_breakpoint_count (breakpoint_count + 1); |
3199 | b->number = breakpoint_count; | |
3200 | b->type = bp_breakpoint; | |
bd5635a1 | 3201 | b->cond = cond; |
30875e1c | 3202 | b->enable = enabled; |
e8bf33c4 | 3203 | b->disposition = tempflag ? del : donttouch; |
bd5635a1 | 3204 | |
d889f6b7 | 3205 | mention (b); |
bd5635a1 RP |
3206 | } |
3207 | ||
3208 | if (sals.nelts > 1) | |
3209 | { | |
199b2450 TL |
3210 | printf_unfiltered ("Multiple breakpoints were set.\n"); |
3211 | printf_unfiltered ("Use the \"delete\" command to delete unwanted breakpoints.\n"); | |
bd5635a1 | 3212 | } |
c8950965 | 3213 | free ((PTR)sals.sals); |
bd5635a1 RP |
3214 | } |
3215 | ||
e8bf33c4 JK |
3216 | /* Used by the gui, could be made a worker for other things. */ |
3217 | ||
3218 | struct breakpoint * | |
3219 | set_breakpoint_sal (sal) | |
6b038bd9 | 3220 | struct symtab_and_line sal; |
e8bf33c4 JK |
3221 | { |
3222 | struct breakpoint *b; | |
3223 | b = set_raw_breakpoint (sal); | |
3224 | set_breakpoint_count (breakpoint_count + 1); | |
3225 | b->number = breakpoint_count; | |
3226 | b->type = bp_breakpoint; | |
3227 | b->cond = 0; | |
3228 | b->thread = -1; | |
3229 | return b; | |
3230 | } | |
3231 | ||
bdbd5f50 JG |
3232 | #if 0 |
3233 | /* These aren't used; I don't know what they were for. */ | |
bd5635a1 RP |
3234 | /* Disable breakpoints on all catch clauses described in ARGS. */ |
3235 | static void | |
3236 | disable_catch (args) | |
3237 | char *args; | |
3238 | { | |
3239 | /* Map the disable command to catch clauses described in ARGS. */ | |
3240 | } | |
3241 | ||
3242 | /* Enable breakpoints on all catch clauses described in ARGS. */ | |
3243 | static void | |
3244 | enable_catch (args) | |
3245 | char *args; | |
3246 | { | |
3247 | /* Map the disable command to catch clauses described in ARGS. */ | |
3248 | } | |
3249 | ||
3250 | /* Delete breakpoints on all catch clauses in the active scope. */ | |
3251 | static void | |
3252 | delete_catch (args) | |
3253 | char *args; | |
3254 | { | |
3255 | /* Map the delete command to catch clauses described in ARGS. */ | |
3256 | } | |
bdbd5f50 | 3257 | #endif /* 0 */ |
bd5635a1 RP |
3258 | |
3259 | static void | |
3260 | catch_command (arg, from_tty) | |
3261 | char *arg; | |
3262 | int from_tty; | |
3263 | { | |
3264 | catch_command_1 (arg, 0, from_tty); | |
3265 | } | |
3266 | \f | |
3267 | static void | |
3268 | clear_command (arg, from_tty) | |
3269 | char *arg; | |
3270 | int from_tty; | |
3271 | { | |
3272 | register struct breakpoint *b, *b1; | |
3273 | struct symtabs_and_lines sals; | |
3274 | struct symtab_and_line sal; | |
3275 | register struct breakpoint *found; | |
3276 | int i; | |
3277 | ||
3278 | if (arg) | |
3279 | { | |
3280 | sals = decode_line_spec (arg, 1); | |
3281 | } | |
3282 | else | |
3283 | { | |
6b038bd9 DT |
3284 | sals.sals = (struct symtab_and_line *) |
3285 | xmalloc (sizeof (struct symtab_and_line)); | |
3286 | INIT_SAL (&sal); /* initialize to zeroes */ | |
bd5635a1 RP |
3287 | sal.line = default_breakpoint_line; |
3288 | sal.symtab = default_breakpoint_symtab; | |
bd5635a1 RP |
3289 | if (sal.symtab == 0) |
3290 | error ("No source file specified."); | |
3291 | ||
3292 | sals.sals[0] = sal; | |
3293 | sals.nelts = 1; | |
3294 | } | |
3295 | ||
3296 | for (i = 0; i < sals.nelts; i++) | |
3297 | { | |
3298 | /* If exact pc given, clear bpts at that pc. | |
3299 | But if sal.pc is zero, clear all bpts on specified line. */ | |
3300 | sal = sals.sals[i]; | |
3301 | found = (struct breakpoint *) 0; | |
6b038bd9 | 3302 | |
bd5635a1 | 3303 | while (breakpoint_chain |
d889f6b7 | 3304 | && (sal.pc |
6b038bd9 DT |
3305 | ? (breakpoint_chain->address == sal.pc && |
3306 | (overlay_debugging == 0 || | |
3307 | breakpoint_chain->section == sal.section)) | |
d889f6b7 JK |
3308 | : (breakpoint_chain->source_file != NULL |
3309 | && sal.symtab != NULL | |
3310 | && STREQ (breakpoint_chain->source_file, | |
3311 | sal.symtab->filename) | |
bd5635a1 RP |
3312 | && breakpoint_chain->line_number == sal.line))) |
3313 | { | |
3314 | b1 = breakpoint_chain; | |
3315 | breakpoint_chain = b1->next; | |
3316 | b1->next = found; | |
3317 | found = b1; | |
3318 | } | |
3319 | ||
3320 | ALL_BREAKPOINTS (b) | |
3321 | while (b->next | |
30875e1c | 3322 | && b->next->type != bp_watchpoint |
999dd04b | 3323 | && b->next->type != bp_hardware_watchpoint |
11054881 KH |
3324 | && b->next->type != bp_read_watchpoint |
3325 | && b->next->type != bp_access_watchpoint | |
d889f6b7 | 3326 | && (sal.pc |
6b038bd9 DT |
3327 | ? (b->next->address == sal.pc && |
3328 | (overlay_debugging == 0 || | |
3329 | b->next->section == sal.section)) | |
d889f6b7 JK |
3330 | : (b->next->source_file != NULL |
3331 | && sal.symtab != NULL | |
3332 | && STREQ (b->next->source_file, sal.symtab->filename) | |
bd5635a1 RP |
3333 | && b->next->line_number == sal.line))) |
3334 | { | |
3335 | b1 = b->next; | |
3336 | b->next = b1->next; | |
3337 | b1->next = found; | |
3338 | found = b1; | |
3339 | } | |
3340 | ||
3341 | if (found == 0) | |
3342 | { | |
3343 | if (arg) | |
3344 | error ("No breakpoint at %s.", arg); | |
3345 | else | |
3346 | error ("No breakpoint at this line."); | |
3347 | } | |
3348 | ||
3349 | if (found->next) from_tty = 1; /* Always report if deleted more than one */ | |
199b2450 | 3350 | if (from_tty) printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); |
6c803036 | 3351 | breakpoints_changed (); |
bd5635a1 RP |
3352 | while (found) |
3353 | { | |
199b2450 | 3354 | if (from_tty) printf_unfiltered ("%d ", found->number); |
bd5635a1 RP |
3355 | b1 = found->next; |
3356 | delete_breakpoint (found); | |
3357 | found = b1; | |
3358 | } | |
199b2450 | 3359 | if (from_tty) putchar_unfiltered ('\n'); |
bd5635a1 | 3360 | } |
c8950965 | 3361 | free ((PTR)sals.sals); |
bd5635a1 RP |
3362 | } |
3363 | \f | |
e51481f9 JL |
3364 | /* Delete breakpoint in BS if they are `delete' breakpoints and |
3365 | all breakpoints that are marked for deletion, whether hit or not. | |
bd5635a1 RP |
3366 | This is called after any breakpoint is hit, or after errors. */ |
3367 | ||
3368 | void | |
3369 | breakpoint_auto_delete (bs) | |
3370 | bpstat bs; | |
3371 | { | |
e51481f9 JL |
3372 | struct breakpoint *b, *temp; |
3373 | ||
bd5635a1 | 3374 | for (; bs; bs = bs->next) |
e8bf33c4 | 3375 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == del |
cef4c2e7 | 3376 | && bs->stop) |
bd5635a1 | 3377 | delete_breakpoint (bs->breakpoint_at); |
e51481f9 JL |
3378 | |
3379 | ALL_BREAKPOINTS_SAFE (b, temp) | |
3380 | { | |
3381 | if (b->disposition == del_at_next_stop) | |
3382 | delete_breakpoint (b); | |
3383 | } | |
bd5635a1 RP |
3384 | } |
3385 | ||
3386 | /* Delete a breakpoint and clean up all traces of it in the data structures. */ | |
3387 | ||
30875e1c | 3388 | void |
bd5635a1 RP |
3389 | delete_breakpoint (bpt) |
3390 | struct breakpoint *bpt; | |
3391 | { | |
3392 | register struct breakpoint *b; | |
3393 | register bpstat bs; | |
3394 | ||
754e5da2 SG |
3395 | if (delete_breakpoint_hook) |
3396 | delete_breakpoint_hook (bpt); | |
3397 | ||
bd5635a1 | 3398 | if (bpt->inserted) |
999dd04b JL |
3399 | remove_breakpoint (bpt); |
3400 | ||
bd5635a1 RP |
3401 | if (breakpoint_chain == bpt) |
3402 | breakpoint_chain = bpt->next; | |
3403 | ||
3404 | ALL_BREAKPOINTS (b) | |
3405 | if (b->next == bpt) | |
3406 | { | |
3407 | b->next = bpt->next; | |
3408 | break; | |
3409 | } | |
3410 | ||
6b038bd9 | 3411 | check_duplicates (bpt->address, bpt->section); |
fe675038 JK |
3412 | /* If this breakpoint was inserted, and there is another breakpoint |
3413 | at the same address, we need to insert the other breakpoint. */ | |
999dd04b | 3414 | if (bpt->inserted |
11054881 KH |
3415 | && bpt->type != bp_hardware_watchpoint |
3416 | && bpt->type != bp_read_watchpoint | |
3417 | && bpt->type != bp_access_watchpoint) | |
fe675038 JK |
3418 | { |
3419 | ALL_BREAKPOINTS (b) | |
ebad9e90 | 3420 | if (b->address == bpt->address |
6b038bd9 | 3421 | && b->section == bpt->section |
ebad9e90 | 3422 | && !b->duplicate |
fa3764e2 JL |
3423 | && b->enable != disabled |
3424 | && b->enable != shlib_disabled) | |
fe675038 JK |
3425 | { |
3426 | int val; | |
3427 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
3428 | if (val != 0) | |
3429 | { | |
05052b63 | 3430 | target_terminal_ours_for_output (); |
199b2450 | 3431 | fprintf_unfiltered (gdb_stderr, "Cannot insert breakpoint %d:\n", b->number); |
fe675038 JK |
3432 | memory_error (val, b->address); /* which bombs us out */ |
3433 | } | |
3434 | else | |
3435 | b->inserted = 1; | |
3436 | } | |
3437 | } | |
bd5635a1 RP |
3438 | |
3439 | free_command_lines (&bpt->commands); | |
3440 | if (bpt->cond) | |
d889f6b7 | 3441 | free (bpt->cond); |
bd5635a1 | 3442 | if (bpt->cond_string != NULL) |
d889f6b7 | 3443 | free (bpt->cond_string); |
bd5635a1 | 3444 | if (bpt->addr_string != NULL) |
d889f6b7 | 3445 | free (bpt->addr_string); |
39ce6829 PS |
3446 | if (bpt->exp != NULL) |
3447 | free (bpt->exp); | |
0eaaa46a | 3448 | if (bpt->exp_string != NULL) |
d889f6b7 | 3449 | free (bpt->exp_string); |
39ce6829 PS |
3450 | if (bpt->val != NULL) |
3451 | value_free (bpt->val); | |
d889f6b7 JK |
3452 | if (bpt->source_file != NULL) |
3453 | free (bpt->source_file); | |
bd5635a1 | 3454 | |
bd5635a1 | 3455 | /* Be sure no bpstat's are pointing at it after it's been freed. */ |
05052b63 JK |
3456 | /* FIXME, how can we find all bpstat's? |
3457 | We just check stop_bpstat for now. */ | |
bd5635a1 RP |
3458 | for (bs = stop_bpstat; bs; bs = bs->next) |
3459 | if (bs->breakpoint_at == bpt) | |
3460 | bs->breakpoint_at = NULL; | |
c8950965 | 3461 | free ((PTR)bpt); |
bd5635a1 RP |
3462 | } |
3463 | ||
895cc8ab | 3464 | void |
bd5635a1 RP |
3465 | delete_command (arg, from_tty) |
3466 | char *arg; | |
3467 | int from_tty; | |
3468 | { | |
6b038bd9 | 3469 | struct breakpoint *b, *temp; |
bd5635a1 RP |
3470 | |
3471 | if (arg == 0) | |
3472 | { | |
895cc8ab KS |
3473 | int breaks_to_delete = 0; |
3474 | ||
3475 | /* Delete all breakpoints if no argument. | |
3476 | Do not delete internal or call-dummy breakpoints, these | |
3477 | have to be deleted with an explicit breakpoint number argument. */ | |
3478 | ALL_BREAKPOINTS (b) | |
3479 | { | |
3480 | if (b->type != bp_call_dummy && b->number >= 0) | |
3481 | breaks_to_delete = 1; | |
3482 | } | |
3483 | ||
bd5635a1 RP |
3484 | /* Ask user only if there are some breakpoints to delete. */ |
3485 | if (!from_tty | |
895cc8ab | 3486 | || (breaks_to_delete && query ("Delete all breakpoints? "))) |
bd5635a1 | 3487 | { |
895cc8ab KS |
3488 | ALL_BREAKPOINTS_SAFE (b, temp) |
3489 | { | |
3490 | if (b->type != bp_call_dummy && b->number >= 0) | |
3491 | delete_breakpoint (b); | |
3492 | } | |
bd5635a1 RP |
3493 | } |
3494 | } | |
3495 | else | |
3496 | map_breakpoint_numbers (arg, delete_breakpoint); | |
3497 | } | |
3498 | ||
bdbd5f50 JG |
3499 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
3500 | The value we return ends up being the return value from catch_errors. | |
3501 | Unused in this case. */ | |
3502 | ||
3503 | static int | |
bd5635a1 | 3504 | breakpoint_re_set_one (bint) |
bdbd5f50 | 3505 | char *bint; |
bd5635a1 RP |
3506 | { |
3507 | struct breakpoint *b = (struct breakpoint *)bint; /* get past catch_errs */ | |
11054881 | 3508 | struct value *mark; |
bd5635a1 RP |
3509 | int i; |
3510 | struct symtabs_and_lines sals; | |
bd5635a1 | 3511 | char *s; |
30875e1c | 3512 | enum enable save_enable; |
bd5635a1 | 3513 | |
80ba48f5 | 3514 | switch (b->type) |
bd5635a1 | 3515 | { |
80ba48f5 | 3516 | case bp_breakpoint: |
11054881 | 3517 | case bp_hardware_breakpoint: |
80ba48f5 SG |
3518 | if (b->addr_string == NULL) |
3519 | { | |
3520 | /* Anything without a string can't be re-set. */ | |
3521 | delete_breakpoint (b); | |
3522 | return 0; | |
3523 | } | |
30875e1c SG |
3524 | /* In case we have a problem, disable this breakpoint. We'll restore |
3525 | its status if we succeed. */ | |
3526 | save_enable = b->enable; | |
3527 | b->enable = disabled; | |
3528 | ||
706dc3ce JL |
3529 | set_language (b->language); |
3530 | input_radix = b->input_radix; | |
bd5635a1 | 3531 | s = b->addr_string; |
d889f6b7 | 3532 | sals = decode_line_1 (&s, 1, (struct symtab *)NULL, 0, (char ***)NULL); |
bd5635a1 RP |
3533 | for (i = 0; i < sals.nelts; i++) |
3534 | { | |
30875e1c | 3535 | resolve_sal_pc (&sals.sals[i]); |
fee933f1 RP |
3536 | |
3537 | /* Reparse conditions, they might contain references to the | |
3538 | old symtab. */ | |
3539 | if (b->cond_string != NULL) | |
3540 | { | |
3541 | s = b->cond_string; | |
3542 | if (b->cond) | |
3543 | free ((PTR)b->cond); | |
3544 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); | |
3545 | } | |
3546 | ||
3547 | /* We need to re-set the breakpoint if the address changes...*/ | |
d889f6b7 | 3548 | if (b->address != sals.sals[i].pc |
fee933f1 RP |
3549 | /* ...or new and old breakpoints both have source files, and |
3550 | the source file name or the line number changes... */ | |
d889f6b7 JK |
3551 | || (b->source_file != NULL |
3552 | && sals.sals[i].symtab != NULL | |
3553 | && (!STREQ (b->source_file, sals.sals[i].symtab->filename) | |
3554 | || b->line_number != sals.sals[i].line) | |
fee933f1 RP |
3555 | ) |
3556 | /* ...or we switch between having a source file and not having | |
3557 | one. */ | |
3558 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
3559 | ) | |
bd5635a1 | 3560 | { |
d889f6b7 JK |
3561 | if (b->source_file != NULL) |
3562 | free (b->source_file); | |
3563 | if (sals.sals[i].symtab == NULL) | |
3564 | b->source_file = NULL; | |
3565 | else | |
3566 | b->source_file = | |
3567 | savestring (sals.sals[i].symtab->filename, | |
3568 | strlen (sals.sals[i].symtab->filename)); | |
8537ba60 SG |
3569 | b->line_number = sals.sals[i].line; |
3570 | b->address = sals.sals[i].pc; | |
6b038bd9 | 3571 | check_duplicates (b->address, b->section); |
bd5635a1 | 3572 | |
8537ba60 | 3573 | mention (b); |
6c803036 JK |
3574 | |
3575 | /* Might be better to do this just once per breakpoint_re_set, | |
3576 | rather than once for every breakpoint. */ | |
3577 | breakpoints_changed (); | |
8537ba60 | 3578 | } |
6b038bd9 | 3579 | b->section = sals.sals[i].section; |
30875e1c | 3580 | b->enable = save_enable; /* Restore it, this worked. */ |
bd5635a1 | 3581 | } |
c8950965 | 3582 | free ((PTR)sals.sals); |
80ba48f5 | 3583 | break; |
2d313932 | 3584 | |
80ba48f5 | 3585 | case bp_watchpoint: |
999dd04b | 3586 | case bp_hardware_watchpoint: |
11054881 KH |
3587 | case bp_read_watchpoint: |
3588 | case bp_access_watchpoint: | |
0eaaa46a | 3589 | innermost_block = NULL; |
0a97f6c4 JK |
3590 | /* The issue arises of what context to evaluate this in. The same |
3591 | one as when it was set, but what does that mean when symbols have | |
3592 | been re-read? We could save the filename and functionname, but | |
3593 | if the context is more local than that, the best we could do would | |
3594 | be something like how many levels deep and which index at that | |
3595 | particular level, but that's going to be less stable than filenames | |
3596 | or functionnames. */ | |
3597 | /* So for now, just use a global context. */ | |
39ce6829 PS |
3598 | if (b->exp) |
3599 | free ((PTR)b->exp); | |
0eaaa46a JK |
3600 | b->exp = parse_expression (b->exp_string); |
3601 | b->exp_valid_block = innermost_block; | |
11054881 | 3602 | mark = value_mark (); |
39ce6829 PS |
3603 | if (b->val) |
3604 | value_free (b->val); | |
0eaaa46a JK |
3605 | b->val = evaluate_expression (b->exp); |
3606 | release_value (b->val); | |
3607 | if (VALUE_LAZY (b->val)) | |
3608 | value_fetch_lazy (b->val); | |
3609 | ||
2d313932 JK |
3610 | if (b->cond_string != NULL) |
3611 | { | |
3612 | s = b->cond_string; | |
39ce6829 PS |
3613 | if (b->cond) |
3614 | free ((PTR)b->cond); | |
2d313932 JK |
3615 | b->cond = parse_exp_1 (&s, (struct block *)0, 0); |
3616 | } | |
cabd4da6 JK |
3617 | if (b->enable == enabled) |
3618 | mention (b); | |
11054881 | 3619 | value_free_to_mark (mark); |
80ba48f5 | 3620 | break; |
2d313932 | 3621 | |
80ba48f5 SG |
3622 | default: |
3623 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
2d313932 | 3624 | /* fall through */ |
fa3764e2 JL |
3625 | /* Delete longjmp breakpoints, they will be reset later by |
3626 | breakpoint_re_set. */ | |
80ba48f5 SG |
3627 | case bp_longjmp: |
3628 | case bp_longjmp_resume: | |
3629 | delete_breakpoint (b); | |
3630 | break; | |
27b6a1fa JL |
3631 | |
3632 | /* This breakpoint is special, it's set up when the inferior | |
3633 | starts and we really don't want to touch it. */ | |
3634 | case bp_shlib_event: | |
fa3764e2 JL |
3635 | |
3636 | /* Keep temporary breakpoints, which can be encountered when we step | |
3637 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
3638 | Otherwise these should have been blown away via the cleanup chain | |
3639 | or by breakpoint_init_inferior when we rerun the executable. */ | |
3640 | case bp_until: | |
3641 | case bp_finish: | |
3642 | case bp_watchpoint_scope: | |
3643 | case bp_call_dummy: | |
3644 | case bp_step_resume: | |
27b6a1fa | 3645 | break; |
bd5635a1 | 3646 | } |
80ba48f5 | 3647 | |
bdbd5f50 | 3648 | return 0; |
bd5635a1 RP |
3649 | } |
3650 | ||
3651 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
3652 | void | |
3653 | breakpoint_re_set () | |
3654 | { | |
cba0d141 | 3655 | struct breakpoint *b, *temp; |
706dc3ce JL |
3656 | enum language save_language; |
3657 | int save_input_radix; | |
30875e1c SG |
3658 | static char message1[] = "Error in re-setting breakpoint %d:\n"; |
3659 | char message[sizeof (message1) + 30 /* slop */]; | |
bd5635a1 | 3660 | |
706dc3ce JL |
3661 | save_language = current_language->la_language; |
3662 | save_input_radix = input_radix; | |
cba0d141 | 3663 | ALL_BREAKPOINTS_SAFE (b, temp) |
bd5635a1 | 3664 | { |
2d313932 | 3665 | sprintf (message, message1, b->number); /* Format possible error msg */ |
fe675038 JK |
3666 | catch_errors (breakpoint_re_set_one, (char *) b, message, |
3667 | RETURN_MASK_ALL); | |
bd5635a1 | 3668 | } |
706dc3ce JL |
3669 | set_language (save_language); |
3670 | input_radix = save_input_radix; | |
bd5635a1 | 3671 | |
cd10c7e3 SG |
3672 | #ifdef GET_LONGJMP_TARGET |
3673 | create_longjmp_breakpoint ("longjmp"); | |
3674 | create_longjmp_breakpoint ("_longjmp"); | |
3675 | create_longjmp_breakpoint ("siglongjmp"); | |
6b038bd9 | 3676 | create_longjmp_breakpoint ("_siglongjmp"); |
cd10c7e3 SG |
3677 | create_longjmp_breakpoint (NULL); |
3678 | #endif | |
80ba48f5 | 3679 | |
1eeba686 | 3680 | #if 0 |
0fe1522a | 3681 | /* Took this out (temporarily at least), since it produces an extra |
1eeba686 | 3682 | blank line at startup. This messes up the gdbtests. -PB */ |
bd5635a1 RP |
3683 | /* Blank line to finish off all those mention() messages we just printed. */ |
3684 | printf_filtered ("\n"); | |
1eeba686 | 3685 | #endif |
bd5635a1 RP |
3686 | } |
3687 | \f | |
3688 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. | |
3689 | If from_tty is nonzero, it prints a message to that effect, | |
3690 | which ends with a period (no newline). */ | |
3691 | ||
3692 | void | |
3693 | set_ignore_count (bptnum, count, from_tty) | |
3694 | int bptnum, count, from_tty; | |
3695 | { | |
3696 | register struct breakpoint *b; | |
3697 | ||
3698 | if (count < 0) | |
3699 | count = 0; | |
3700 | ||
3701 | ALL_BREAKPOINTS (b) | |
3702 | if (b->number == bptnum) | |
3703 | { | |
3704 | b->ignore_count = count; | |
3705 | if (!from_tty) | |
3706 | return; | |
3707 | else if (count == 0) | |
423e9664 SG |
3708 | printf_filtered ("Will stop next time breakpoint %d is reached.", |
3709 | bptnum); | |
bd5635a1 | 3710 | else if (count == 1) |
423e9664 SG |
3711 | printf_filtered ("Will ignore next crossing of breakpoint %d.", |
3712 | bptnum); | |
bd5635a1 | 3713 | else |
423e9664 | 3714 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", |
bd5635a1 | 3715 | count, bptnum); |
6c803036 | 3716 | breakpoints_changed (); |
bd5635a1 RP |
3717 | return; |
3718 | } | |
3719 | ||
3720 | error ("No breakpoint number %d.", bptnum); | |
3721 | } | |
3722 | ||
3723 | /* Clear the ignore counts of all breakpoints. */ | |
3724 | void | |
3725 | breakpoint_clear_ignore_counts () | |
3726 | { | |
3727 | struct breakpoint *b; | |
3728 | ||
3729 | ALL_BREAKPOINTS (b) | |
3730 | b->ignore_count = 0; | |
3731 | } | |
3732 | ||
3733 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
3734 | ||
3735 | static void | |
3736 | ignore_command (args, from_tty) | |
3737 | char *args; | |
3738 | int from_tty; | |
3739 | { | |
3740 | char *p = args; | |
3741 | register int num; | |
3742 | ||
3743 | if (p == 0) | |
3744 | error_no_arg ("a breakpoint number"); | |
3745 | ||
3746 | num = get_number (&p); | |
3747 | ||
3748 | if (*p == 0) | |
3749 | error ("Second argument (specified ignore-count) is missing."); | |
3750 | ||
bdbd5f50 JG |
3751 | set_ignore_count (num, |
3752 | longest_to_int (value_as_long (parse_and_eval (p))), | |
3753 | from_tty); | |
423e9664 | 3754 | printf_filtered ("\n"); |
6c803036 | 3755 | breakpoints_changed (); |
bd5635a1 RP |
3756 | } |
3757 | \f | |
3758 | /* Call FUNCTION on each of the breakpoints | |
3759 | whose numbers are given in ARGS. */ | |
3760 | ||
3761 | static void | |
3762 | map_breakpoint_numbers (args, function) | |
3763 | char *args; | |
30875e1c | 3764 | void (*function) PARAMS ((struct breakpoint *)); |
bd5635a1 RP |
3765 | { |
3766 | register char *p = args; | |
3767 | char *p1; | |
3768 | register int num; | |
3769 | register struct breakpoint *b; | |
3770 | ||
3771 | if (p == 0) | |
3772 | error_no_arg ("one or more breakpoint numbers"); | |
3773 | ||
3774 | while (*p) | |
3775 | { | |
3776 | p1 = p; | |
3777 | ||
3778 | num = get_number (&p1); | |
3779 | ||
3780 | ALL_BREAKPOINTS (b) | |
3781 | if (b->number == num) | |
3782 | { | |
999dd04b | 3783 | struct breakpoint *related_breakpoint = b->related_breakpoint; |
bd5635a1 | 3784 | function (b); |
999dd04b JL |
3785 | if (related_breakpoint) |
3786 | function (related_breakpoint); | |
bd5635a1 RP |
3787 | goto win; |
3788 | } | |
199b2450 | 3789 | printf_unfiltered ("No breakpoint number %d.\n", num); |
bd5635a1 RP |
3790 | win: |
3791 | p = p1; | |
3792 | } | |
3793 | } | |
3794 | ||
e8bf33c4 | 3795 | void |
bd5635a1 RP |
3796 | disable_breakpoint (bpt) |
3797 | struct breakpoint *bpt; | |
3798 | { | |
999dd04b JL |
3799 | /* Never disable a watchpoint scope breakpoint; we want to |
3800 | hit them when we leave scope so we can delete both the | |
3801 | watchpoint and its scope breakpoint at that time. */ | |
3802 | if (bpt->type == bp_watchpoint_scope) | |
3803 | return; | |
3804 | ||
bd5635a1 RP |
3805 | bpt->enable = disabled; |
3806 | ||
6b038bd9 | 3807 | check_duplicates (bpt->address, bpt->section); |
e8bf33c4 JK |
3808 | |
3809 | if (modify_breakpoint_hook) | |
3810 | modify_breakpoint_hook (bpt); | |
bd5635a1 RP |
3811 | } |
3812 | ||
bdbd5f50 | 3813 | /* ARGSUSED */ |
bd5635a1 RP |
3814 | static void |
3815 | disable_command (args, from_tty) | |
3816 | char *args; | |
3817 | int from_tty; | |
3818 | { | |
3819 | register struct breakpoint *bpt; | |
3820 | if (args == 0) | |
3821 | ALL_BREAKPOINTS (bpt) | |
423e9664 SG |
3822 | switch (bpt->type) |
3823 | { | |
3824 | case bp_breakpoint: | |
11054881 KH |
3825 | case bp_hardware_breakpoint: |
3826 | case bp_watchpoint: | |
3827 | case bp_hardware_watchpoint: | |
3828 | case bp_read_watchpoint: | |
3829 | case bp_access_watchpoint: | |
423e9664 SG |
3830 | disable_breakpoint (bpt); |
3831 | default: | |
3832 | continue; | |
3833 | } | |
bd5635a1 RP |
3834 | else |
3835 | map_breakpoint_numbers (args, disable_breakpoint); | |
3836 | } | |
3837 | ||
3838 | static void | |
3f37b696 | 3839 | do_enable_breakpoint (bpt, disposition) |
bd5635a1 | 3840 | struct breakpoint *bpt; |
3f37b696 | 3841 | enum bpdisp disposition; |
bd5635a1 | 3842 | { |
706dc3ce | 3843 | struct frame_info *save_selected_frame = NULL; |
11054881 KH |
3844 | int save_selected_frame_level = -1; |
3845 | int target_resources_ok, other_type_used; | |
3846 | struct value *mark; | |
3847 | ||
3f37b696 FF |
3848 | if (bpt->type == bp_hardware_breakpoint) |
3849 | { | |
11054881 KH |
3850 | int i; |
3851 | i = hw_breakpoint_used_count(); | |
3852 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( | |
3853 | bp_hardware_breakpoint, i+1, 0); | |
3854 | if (target_resources_ok == 0) | |
3855 | error ("No hardware breakpoint support in the target."); | |
3856 | else if (target_resources_ok < 0) | |
3857 | error ("Hardware breakpoints used exceeds limit."); | |
3858 | } | |
3859 | ||
30875e1c | 3860 | bpt->enable = enabled; |
3f37b696 | 3861 | bpt->disposition = disposition; |
6b038bd9 | 3862 | check_duplicates (bpt->address, bpt->section); |
6c803036 | 3863 | breakpoints_changed (); |
11054881 KH |
3864 | |
3865 | if (bpt->type == bp_watchpoint || bpt->type == bp_hardware_watchpoint || | |
3866 | bpt->type == bp_read_watchpoint || bpt->type == bp_access_watchpoint) | |
3867 | { | |
3868 | if (bpt->exp_valid_block != NULL) | |
3869 | { | |
706dc3ce JL |
3870 | struct frame_info *fr = |
3871 | find_frame_addr_in_frame_chain (bpt->watchpoint_frame); | |
11054881 KH |
3872 | if (fr == NULL) |
3873 | { | |
3874 | printf_filtered ("\ | |
3875 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
3876 | is valid is not currently in scope.\n", bpt->number); | |
3877 | bpt->enable = disabled; | |
3878 | return; | |
3879 | } | |
3880 | ||
3881 | save_selected_frame = selected_frame; | |
3882 | save_selected_frame_level = selected_frame_level; | |
3883 | select_frame (fr, -1); | |
3884 | } | |
3885 | ||
3886 | value_free (bpt->val); | |
3887 | mark = value_mark (); | |
3888 | bpt->val = evaluate_expression (bpt->exp); | |
3889 | release_value (bpt->val); | |
3890 | if (VALUE_LAZY (bpt->val)) | |
3891 | value_fetch_lazy (bpt->val); | |
3892 | ||
3893 | if (bpt->type == bp_hardware_watchpoint || | |
3894 | bpt->type == bp_read_watchpoint || | |
3895 | bpt->type == bp_access_watchpoint) | |
3896 | { | |
3897 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); | |
3f37b696 FF |
3898 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); |
3899 | ||
ad3b8c4a JM |
3900 | /* Hack around 'unused var' error for some targets here */ |
3901 | (void) mem_cnt, i; | |
11054881 | 3902 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT( |
3f37b696 | 3903 | bpt->type, i + mem_cnt, other_type_used); |
11054881 KH |
3904 | /* we can consider of type is bp_hardware_watchpoint, convert to |
3905 | bp_watchpoint in the following condition */ | |
3906 | if (target_resources_ok < 0) | |
3907 | { | |
3908 | printf_filtered("\ | |
3909 | Cannot enable watchpoint %d because target watch resources\n\ | |
3910 | have been allocated for other watchpoints.\n", bpt->number); | |
3f37b696 FF |
3911 | bpt->enable = disabled; |
3912 | value_free_to_mark (mark); | |
3913 | return; | |
11054881 KH |
3914 | } |
3915 | } | |
3916 | ||
3917 | if (save_selected_frame_level >= 0) | |
3918 | select_frame (save_selected_frame, save_selected_frame_level); | |
3919 | value_free_to_mark (mark); | |
3920 | } | |
3f37b696 FF |
3921 | if (modify_breakpoint_hook) |
3922 | modify_breakpoint_hook (bpt); | |
3923 | } | |
3924 | ||
3925 | void | |
3926 | enable_breakpoint (bpt) | |
3927 | struct breakpoint *bpt; | |
3928 | { | |
895cc8ab | 3929 | do_enable_breakpoint (bpt, bpt->disposition); |
3f37b696 FF |
3930 | } |
3931 | ||
3932 | /* The enable command enables the specified breakpoints (or all defined | |
3933 | breakpoints) so they once again become (or continue to be) effective | |
3934 | in stopping the inferior. */ | |
3935 | ||
3936 | /* ARGSUSED */ | |
3937 | static void | |
3938 | enable_command (args, from_tty) | |
3939 | char *args; | |
3940 | int from_tty; | |
3941 | { | |
3942 | register struct breakpoint *bpt; | |
3943 | if (args == 0) | |
3944 | ALL_BREAKPOINTS (bpt) | |
3945 | switch (bpt->type) | |
3946 | { | |
3947 | case bp_breakpoint: | |
3948 | case bp_hardware_breakpoint: | |
3949 | case bp_watchpoint: | |
3950 | case bp_hardware_watchpoint: | |
3951 | case bp_read_watchpoint: | |
3952 | case bp_access_watchpoint: | |
3953 | enable_breakpoint (bpt); | |
3954 | default: | |
3955 | continue; | |
3956 | } | |
3957 | else | |
3958 | map_breakpoint_numbers (args, enable_breakpoint); | |
3959 | } | |
3960 | ||
3961 | static void | |
3962 | enable_once_breakpoint (bpt) | |
3963 | struct breakpoint *bpt; | |
3964 | { | |
3965 | do_enable_breakpoint (bpt, disable); | |
bd5635a1 RP |
3966 | } |
3967 | ||
bdbd5f50 | 3968 | /* ARGSUSED */ |
bd5635a1 RP |
3969 | static void |
3970 | enable_once_command (args, from_tty) | |
3971 | char *args; | |
3972 | int from_tty; | |
3973 | { | |
3974 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
3975 | } | |
3976 | ||
3977 | static void | |
3978 | enable_delete_breakpoint (bpt) | |
3979 | struct breakpoint *bpt; | |
3980 | { | |
3f37b696 | 3981 | do_enable_breakpoint (bpt, del); |
bd5635a1 RP |
3982 | } |
3983 | ||
bdbd5f50 | 3984 | /* ARGSUSED */ |
bd5635a1 RP |
3985 | static void |
3986 | enable_delete_command (args, from_tty) | |
3987 | char *args; | |
3988 | int from_tty; | |
3989 | { | |
3990 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
3991 | } | |
3992 | \f | |
706dc3ce JL |
3993 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
3994 | ||
bd5635a1 RP |
3995 | struct symtabs_and_lines |
3996 | decode_line_spec_1 (string, funfirstline) | |
3997 | char *string; | |
3998 | int funfirstline; | |
3999 | { | |
4000 | struct symtabs_and_lines sals; | |
4001 | if (string == 0) | |
4002 | error ("Empty line specification."); | |
4003 | if (default_breakpoint_valid) | |
4004 | sals = decode_line_1 (&string, funfirstline, | |
d889f6b7 JK |
4005 | default_breakpoint_symtab, default_breakpoint_line, |
4006 | (char ***)NULL); | |
bd5635a1 | 4007 | else |
d889f6b7 JK |
4008 | sals = decode_line_1 (&string, funfirstline, |
4009 | (struct symtab *)NULL, 0, (char ***)NULL); | |
bd5635a1 RP |
4010 | if (*string) |
4011 | error ("Junk at end of line specification: %s", string); | |
4012 | return sals; | |
4013 | } | |
4014 | \f | |
bd5635a1 RP |
4015 | void |
4016 | _initialize_breakpoint () | |
4017 | { | |
4018 | breakpoint_chain = 0; | |
4019 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
4020 | before a breakpoint is set. */ | |
4021 | breakpoint_count = 0; | |
4022 | ||
4023 | add_com ("ignore", class_breakpoint, ignore_command, | |
557f3a0e SS |
4024 | "Set ignore-count of breakpoint number N to COUNT.\n\ |
4025 | Usage is `ignore N COUNT'."); | |
bd5635a1 RP |
4026 | |
4027 | add_com ("commands", class_breakpoint, commands_command, | |
4028 | "Set commands to be executed when a breakpoint is hit.\n\ | |
4029 | Give breakpoint number as argument after \"commands\".\n\ | |
4030 | With no argument, the targeted breakpoint is the last one set.\n\ | |
4031 | The commands themselves follow starting on the next line.\n\ | |
4032 | Type a line containing \"end\" to indicate the end of them.\n\ | |
4033 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
4034 | then no output is printed when it is hit, except what the commands print."); | |
4035 | ||
4036 | add_com ("condition", class_breakpoint, condition_command, | |
4037 | "Specify breakpoint number N to break only if COND is true.\n\ | |
557f3a0e SS |
4038 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
4039 | expression to be evaluated whenever breakpoint N is reached. "); | |
bd5635a1 RP |
4040 | |
4041 | add_com ("tbreak", class_breakpoint, tbreak_command, | |
4042 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
c4de6b30 JK |
4043 | Like \"break\" except the breakpoint is only temporary,\n\ |
4044 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
4045 | by using \"enable delete\" on the breakpoint number."); | |
bd5635a1 | 4046 | |
11054881 KH |
4047 | add_com ("hbreak", class_breakpoint, hbreak_command, |
4048 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
4049 | Like \"break\" except the breakpoint requires hardware support,\n\ | |
4050 | some target hardware may not have this support."); | |
4051 | ||
4052 | add_com ("thbreak", class_breakpoint, thbreak_command, | |
4053 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
4054 | Like \"hbreak\" except the breakpoint is only temporary,\n\ | |
4055 | so it will be deleted when hit."); | |
4056 | ||
bd5635a1 RP |
4057 | add_prefix_cmd ("enable", class_breakpoint, enable_command, |
4058 | "Enable some breakpoints.\n\ | |
4059 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
4060 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
4061 | This is used to cancel the effect of the \"disable\" command.\n\ | |
4062 | With a subcommand you can enable temporarily.", | |
4063 | &enablelist, "enable ", 1, &cmdlist); | |
4064 | ||
895cc8ab KS |
4065 | add_com_alias ("en", "enable", class_breakpoint, 1); |
4066 | ||
bd5635a1 RP |
4067 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, |
4068 | "Enable some breakpoints.\n\ | |
4069 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
4070 | This is used to cancel the effect of the \"disable\" command.\n\ | |
4071 | May be abbreviated to simply \"enable\".\n", | |
4072 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); | |
4073 | ||
4074 | add_cmd ("once", no_class, enable_once_command, | |
4075 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
bd2f0c85 | 4076 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", |
bd5635a1 RP |
4077 | &enablebreaklist); |
4078 | ||
4079 | add_cmd ("delete", no_class, enable_delete_command, | |
4080 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
4081 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
4082 | &enablebreaklist); | |
4083 | ||
4084 | add_cmd ("delete", no_class, enable_delete_command, | |
4085 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
4086 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
4087 | &enablelist); | |
4088 | ||
4089 | add_cmd ("once", no_class, enable_once_command, | |
4090 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
bd2f0c85 | 4091 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", |
bd5635a1 RP |
4092 | &enablelist); |
4093 | ||
4094 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
4095 | "Disable some breakpoints.\n\ | |
4096 | Arguments are breakpoint numbers with spaces in between.\n\ | |
4097 | To disable all breakpoints, give no argument.\n\ | |
4098 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
4099 | &disablelist, "disable ", 1, &cmdlist); | |
4100 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
4101 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
4102 | ||
4103 | add_cmd ("breakpoints", class_alias, disable_command, | |
4104 | "Disable some breakpoints.\n\ | |
4105 | Arguments are breakpoint numbers with spaces in between.\n\ | |
4106 | To disable all breakpoints, give no argument.\n\ | |
4107 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
4108 | This command may be abbreviated \"disable\".", | |
4109 | &disablelist); | |
4110 | ||
4111 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
4112 | "Delete some breakpoints or auto-display expressions.\n\ | |
4113 | Arguments are breakpoint numbers with spaces in between.\n\ | |
4114 | To delete all breakpoints, give no argument.\n\ | |
4115 | \n\ | |
4116 | Also a prefix command for deletion of other GDB objects.\n\ | |
4117 | The \"unset\" command is also an alias for \"delete\".", | |
4118 | &deletelist, "delete ", 1, &cmdlist); | |
4119 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
bd5635a1 RP |
4120 | |
4121 | add_cmd ("breakpoints", class_alias, delete_command, | |
4122 | "Delete some breakpoints or auto-display expressions.\n\ | |
4123 | Arguments are breakpoint numbers with spaces in between.\n\ | |
4124 | To delete all breakpoints, give no argument.\n\ | |
4125 | This command may be abbreviated \"delete\".", | |
4126 | &deletelist); | |
4127 | ||
4128 | add_com ("clear", class_breakpoint, clear_command, | |
706dc3ce | 4129 | concat ("Clear breakpoint at specified line or function.\n\ |
bd5635a1 RP |
4130 | Argument may be line number, function name, or \"*\" and an address.\n\ |
4131 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
4132 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
706dc3ce JL |
4133 | If an address is specified, breakpoints at that address are cleared.\n\n", |
4134 | "With no argument, clears all breakpoints in the line that the selected frame\n\ | |
bd5635a1 RP |
4135 | is executing in.\n\ |
4136 | \n\ | |
706dc3ce | 4137 | See also the \"delete\" command which clears breakpoints by number.", NULL)); |
bd5635a1 RP |
4138 | |
4139 | add_com ("break", class_breakpoint, break_command, | |
706dc3ce | 4140 | concat ("Set breakpoint at specified line or function.\n\ |
bd5635a1 RP |
4141 | Argument may be line number, function name, or \"*\" and an address.\n\ |
4142 | If line number is specified, break at start of code for that line.\n\ | |
4143 | If function is specified, break at start of code for that function.\n\ | |
706dc3ce JL |
4144 | If an address is specified, break at that exact address.\n", |
4145 | "With no arg, uses current execution address of selected stack frame.\n\ | |
bd5635a1 RP |
4146 | This is useful for breaking on return to a stack frame.\n\ |
4147 | \n\ | |
4148 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
4149 | \n\ | |
706dc3ce | 4150 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); |
bd5635a1 RP |
4151 | add_com_alias ("b", "break", class_run, 1); |
4152 | add_com_alias ("br", "break", class_run, 1); | |
4153 | add_com_alias ("bre", "break", class_run, 1); | |
4154 | add_com_alias ("brea", "break", class_run, 1); | |
4155 | ||
4156 | add_info ("breakpoints", breakpoints_info, | |
706dc3ce | 4157 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
80ba48f5 | 4158 | The \"Type\" column indicates one of:\n\ |
423e9664 SG |
4159 | \tbreakpoint - normal breakpoint\n\ |
4160 | \twatchpoint - watchpoint\n\ | |
80ba48f5 SG |
4161 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
4162 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
4163 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
706dc3ce JL |
4164 | address and file/line number respectively.\n\n", |
4165 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
80ba48f5 SG |
4166 | are set to the address of the last breakpoint listed.\n\n\ |
4167 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
706dc3ce | 4168 | breakpoint set.", NULL)); |
80ba48f5 | 4169 | |
9b280a7f JG |
4170 | #if MAINTENANCE_CMDS |
4171 | ||
4172 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, | |
706dc3ce | 4173 | concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\ |
80ba48f5 | 4174 | The \"Type\" column indicates one of:\n\ |
423e9664 SG |
4175 | \tbreakpoint - normal breakpoint\n\ |
4176 | \twatchpoint - watchpoint\n\ | |
4177 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
4178 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
4179 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
706dc3ce JL |
4180 | \tfinish - internal breakpoint used by the \"finish\" command\n", |
4181 | "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
80ba48f5 SG |
4182 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
4183 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
706dc3ce JL |
4184 | address and file/line number respectively.\n\n", |
4185 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
bd5635a1 RP |
4186 | are set to the address of the last breakpoint listed.\n\n\ |
4187 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
706dc3ce | 4188 | breakpoint set.", NULL), |
9b280a7f JG |
4189 | &maintenanceinfolist); |
4190 | ||
4191 | #endif /* MAINTENANCE_CMDS */ | |
bd5635a1 RP |
4192 | |
4193 | add_com ("catch", class_breakpoint, catch_command, | |
4194 | "Set breakpoints to catch exceptions that are raised.\n\ | |
4195 | Argument may be a single exception to catch, multiple exceptions\n\ | |
4196 | to catch, or the default exception \"default\". If no arguments\n\ | |
4197 | are given, breakpoints are set at all exception handlers catch clauses\n\ | |
4198 | within the current scope.\n\ | |
4199 | \n\ | |
4200 | A condition specified for the catch applies to all breakpoints set\n\ | |
4201 | with this command\n\ | |
4202 | \n\ | |
4203 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
4204 | ||
4205 | add_com ("watch", class_breakpoint, watch_command, | |
4206 | "Set a watchpoint for an expression.\n\ | |
4207 | A watchpoint stops execution of your program whenever the value of\n\ | |
4208 | an expression changes."); | |
4209 | ||
11054881 KH |
4210 | add_com ("rwatch", class_breakpoint, rwatch_command, |
4211 | "Set a read watchpoint for an expression.\n\ | |
4212 | A watchpoint stops execution of your program whenever the value of\n\ | |
4213 | an expression is read."); | |
4214 | ||
4215 | add_com ("awatch", class_breakpoint, awatch_command, | |
4216 | "Set a watchpoint for an expression.\n\ | |
4217 | A watchpoint stops execution of your program whenever the value of\n\ | |
4218 | an expression is either read or written."); | |
4219 | ||
c8950965 JG |
4220 | add_info ("watchpoints", breakpoints_info, |
4221 | "Synonym for ``info breakpoints''."); | |
9f577285 | 4222 | |
bd5635a1 | 4223 | } |