Commit | Line | Data |
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c906108c | 1 | /* Everything about breakpoints, for GDB. |
b6ba6518 KB |
2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
3 | 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc. | |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
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. | |
c906108c | 16 | |
c5aa993b JM |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include <ctype.h> | |
24 | #include "symtab.h" | |
25 | #include "frame.h" | |
26 | #include "breakpoint.h" | |
27 | #include "gdbtypes.h" | |
28 | #include "expression.h" | |
29 | #include "gdbcore.h" | |
30 | #include "gdbcmd.h" | |
31 | #include "value.h" | |
32 | #include "command.h" | |
33 | #include "inferior.h" | |
34 | #include "gdbthread.h" | |
35 | #include "target.h" | |
36 | #include "language.h" | |
37 | #include "gdb_string.h" | |
38 | #include "demangle.h" | |
39 | #include "annotate.h" | |
40 | #include "symfile.h" | |
41 | #include "objfiles.h" | |
c5f0f3d0 | 42 | #include "linespec.h" |
8b93c638 JM |
43 | #ifdef UI_OUT |
44 | #include "ui-out.h" | |
45 | #endif | |
c906108c | 46 | |
104c1213 JM |
47 | #include "gdb-events.h" |
48 | ||
c906108c SS |
49 | /* Prototypes for local functions. */ |
50 | ||
c2c6d25f JM |
51 | static void until_break_command_continuation (struct continuation_arg *arg); |
52 | ||
a14ed312 | 53 | static void catch_command_1 (char *, int, int); |
c906108c | 54 | |
a14ed312 | 55 | static void enable_delete_command (char *, int); |
c906108c | 56 | |
a14ed312 | 57 | static void enable_delete_breakpoint (struct breakpoint *); |
c906108c | 58 | |
a14ed312 | 59 | static void enable_once_command (char *, int); |
c906108c | 60 | |
a14ed312 | 61 | static void enable_once_breakpoint (struct breakpoint *); |
c906108c | 62 | |
a14ed312 | 63 | static void disable_command (char *, int); |
c906108c | 64 | |
a14ed312 | 65 | static void enable_command (char *, int); |
c906108c | 66 | |
a14ed312 | 67 | static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *)); |
c906108c | 68 | |
a14ed312 | 69 | static void ignore_command (char *, int); |
c906108c | 70 | |
a14ed312 | 71 | static int breakpoint_re_set_one (PTR); |
c906108c | 72 | |
a14ed312 | 73 | static void clear_command (char *, int); |
c906108c | 74 | |
a14ed312 | 75 | static void catch_command (char *, int); |
c906108c | 76 | |
a14ed312 | 77 | static void handle_gnu_4_16_catch_command (char *, int, int); |
c906108c | 78 | |
a14ed312 | 79 | static struct symtabs_and_lines get_catch_sals (int); |
c906108c | 80 | |
a14ed312 | 81 | static void watch_command (char *, int); |
c906108c | 82 | |
a14ed312 | 83 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 84 | |
a14ed312 KB |
85 | static void break_at_finish_command (char *, int); |
86 | static void break_at_finish_at_depth_command (char *, int); | |
7a292a7a | 87 | |
a14ed312 | 88 | static void tbreak_at_finish_command (char *, int); |
7a292a7a | 89 | |
a14ed312 | 90 | static void break_command_1 (char *, int, int); |
c906108c | 91 | |
a14ed312 | 92 | static void mention (struct breakpoint *); |
c906108c | 93 | |
4d28f7a8 | 94 | struct breakpoint *set_raw_breakpoint (struct symtab_and_line, enum bptype); |
c906108c | 95 | |
9f60f21b | 96 | static void check_duplicates (struct breakpoint *); |
c906108c | 97 | |
a14ed312 | 98 | static void describe_other_breakpoints (CORE_ADDR, asection *); |
c906108c | 99 | |
a14ed312 | 100 | static void breakpoints_info (char *, int); |
c906108c | 101 | |
a14ed312 | 102 | static void breakpoint_1 (int, int); |
c906108c | 103 | |
a14ed312 | 104 | static bpstat bpstat_alloc (struct breakpoint *, bpstat); |
c906108c | 105 | |
a14ed312 | 106 | static int breakpoint_cond_eval (PTR); |
c906108c | 107 | |
a14ed312 | 108 | static void cleanup_executing_breakpoints (PTR); |
c906108c | 109 | |
a14ed312 | 110 | static void commands_command (char *, int); |
c906108c | 111 | |
a14ed312 | 112 | static void condition_command (char *, int); |
c906108c | 113 | |
a14ed312 | 114 | static int get_number_trailer (char **, int); |
c906108c | 115 | |
a14ed312 | 116 | void set_breakpoint_count (int); |
c906108c SS |
117 | |
118 | #if 0 | |
a14ed312 | 119 | static struct breakpoint *create_temp_exception_breakpoint (CORE_ADDR); |
c906108c SS |
120 | #endif |
121 | ||
c5aa993b JM |
122 | typedef enum |
123 | { | |
124 | mark_inserted, | |
125 | mark_uninserted | |
126 | } | |
127 | insertion_state_t; | |
c906108c | 128 | |
a14ed312 | 129 | static int remove_breakpoint (struct breakpoint *, insertion_state_t); |
c906108c | 130 | |
a14ed312 | 131 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
132 | |
133 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 134 | |
c5aa993b JM |
135 | typedef struct |
136 | { | |
137 | enum exception_event_kind kind; | |
138 | int enable; | |
139 | } | |
140 | args_for_catchpoint_enable; | |
c906108c | 141 | |
a14ed312 | 142 | static int watchpoint_check (PTR); |
c906108c | 143 | |
a14ed312 | 144 | static int cover_target_enable_exception_callback (PTR); |
c906108c | 145 | |
a14ed312 | 146 | static void maintenance_info_breakpoints (char *, int); |
c906108c SS |
147 | |
148 | #ifdef GET_LONGJMP_TARGET | |
a14ed312 | 149 | static void create_longjmp_breakpoint (char *); |
c906108c SS |
150 | #endif |
151 | ||
a14ed312 | 152 | static int hw_breakpoint_used_count (void); |
c906108c | 153 | |
a14ed312 | 154 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 155 | |
a14ed312 | 156 | static void hbreak_command (char *, int); |
c906108c | 157 | |
a14ed312 | 158 | static void thbreak_command (char *, int); |
c906108c | 159 | |
a14ed312 | 160 | static void watch_command_1 (char *, int, int); |
c906108c | 161 | |
a14ed312 | 162 | static void rwatch_command (char *, int); |
c906108c | 163 | |
a14ed312 | 164 | static void awatch_command (char *, int); |
c906108c | 165 | |
a14ed312 | 166 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 167 | |
a14ed312 KB |
168 | static void solib_load_unload_1 (char *hookname, |
169 | int tempflag, | |
170 | char *dll_pathname, | |
171 | char *cond_string, enum bptype bp_kind); | |
7a292a7a | 172 | |
a14ed312 KB |
173 | static void create_fork_vfork_event_catchpoint (int tempflag, |
174 | char *cond_string, | |
175 | enum bptype bp_kind); | |
7a292a7a | 176 | |
a14ed312 KB |
177 | static void break_at_finish_at_depth_command_1 (char *arg, |
178 | int flag, int from_tty); | |
7a292a7a | 179 | |
a14ed312 | 180 | static void break_at_finish_command_1 (char *arg, int flag, int from_tty); |
7a292a7a | 181 | |
a14ed312 | 182 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 183 | |
a14ed312 | 184 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 185 | |
a14ed312 | 186 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 187 | |
a14ed312 | 188 | static char *ep_find_event_name_end (char *arg); |
7a292a7a | 189 | |
a14ed312 | 190 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 191 | |
a14ed312 | 192 | static char *ep_parse_optional_filename (char **arg); |
7a292a7a | 193 | |
e514a9d6 | 194 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) |
a14ed312 | 195 | static void catch_exec_command_1 (char *arg, int tempflag, int from_tty); |
e514a9d6 | 196 | #endif |
7a292a7a | 197 | |
d85310f7 MS |
198 | static void create_exception_catchpoint (int tempflag, char *cond_string, |
199 | enum exception_event_kind ex_event, | |
200 | struct symtab_and_line *sal); | |
7a292a7a | 201 | |
d85310f7 MS |
202 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
203 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 204 | |
a14ed312 | 205 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 206 | |
a14ed312 | 207 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 208 | |
c906108c SS |
209 | /* Prototypes for exported functions. */ |
210 | ||
c906108c SS |
211 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
212 | if such is available. */ | |
213 | static int can_use_hw_watchpoints; | |
214 | ||
a14ed312 | 215 | void _initialize_breakpoint (void); |
c906108c | 216 | |
c5aa993b | 217 | extern int addressprint; /* Print machine addresses? */ |
c906108c | 218 | |
c906108c | 219 | static int internal_breakpoint_number = -1; |
c906108c SS |
220 | |
221 | /* Are we executing breakpoint commands? */ | |
222 | static int executing_breakpoint_commands; | |
223 | ||
224 | /* Walk the following statement or block through all breakpoints. | |
225 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
226 | breakpoint. */ | |
227 | ||
5c44784c | 228 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 229 | |
5c44784c JM |
230 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
231 | for (B = breakpoint_chain; \ | |
232 | B ? (TMP=B->next, 1): 0; \ | |
233 | B = TMP) | |
c906108c SS |
234 | |
235 | /* True if SHIFT_INST_REGS defined, false otherwise. */ | |
236 | ||
237 | int must_shift_inst_regs = | |
238 | #if defined(SHIFT_INST_REGS) | |
239 | 1 | |
240 | #else | |
241 | 0 | |
242 | #endif | |
c5aa993b | 243 | ; |
c906108c SS |
244 | |
245 | /* True if breakpoint hit counts should be displayed in breakpoint info. */ | |
246 | ||
247 | int show_breakpoint_hit_counts = 1; | |
248 | ||
249 | /* Chain of all breakpoints defined. */ | |
250 | ||
251 | struct breakpoint *breakpoint_chain; | |
252 | ||
253 | /* Number of last breakpoint made. */ | |
254 | ||
255 | int breakpoint_count; | |
256 | ||
c5aa993b JM |
257 | /* Pointer to current exception event record */ |
258 | static struct exception_event_record *current_exception_event; | |
c906108c SS |
259 | |
260 | /* Indicator of whether exception catchpoints should be nuked | |
261 | between runs of a program */ | |
262 | int exception_catchpoints_are_fragile = 0; | |
c5aa993b | 263 | |
c906108c SS |
264 | /* Indicator of when exception catchpoints set-up should be |
265 | reinitialized -- e.g. when program is re-run */ | |
266 | int exception_support_initialized = 0; | |
267 | ||
268 | /* This function returns a pointer to the string representation of the | |
269 | pathname of the dynamically-linked library that has just been | |
270 | loaded. | |
271 | ||
272 | This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE, | |
273 | or undefined results are guaranteed. | |
274 | ||
275 | This string's contents are only valid immediately after the | |
276 | inferior has stopped in the dynamic linker hook, and becomes | |
277 | invalid as soon as the inferior is continued. Clients should make | |
278 | a copy of this string if they wish to continue the inferior and | |
279 | then access the string. */ | |
280 | ||
281 | #ifndef SOLIB_LOADED_LIBRARY_PATHNAME | |
282 | #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) "" | |
283 | #endif | |
284 | ||
285 | /* This function returns a pointer to the string representation of the | |
286 | pathname of the dynamically-linked library that has just been | |
287 | unloaded. | |
288 | ||
289 | This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is | |
290 | TRUE, or undefined results are guaranteed. | |
291 | ||
292 | This string's contents are only valid immediately after the | |
293 | inferior has stopped in the dynamic linker hook, and becomes | |
294 | invalid as soon as the inferior is continued. Clients should make | |
295 | a copy of this string if they wish to continue the inferior and | |
296 | then access the string. */ | |
297 | ||
298 | #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME | |
299 | #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) "" | |
300 | #endif | |
301 | ||
302 | /* This function is called by the "catch load" command. It allows the | |
303 | debugger to be notified by the dynamic linker when a specified | |
304 | library file (or any library file, if filename is NULL) is loaded. */ | |
305 | ||
306 | #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK | |
307 | #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
308 | error ("catch of library loads not yet implemented on this platform") | |
309 | #endif | |
310 | ||
311 | /* This function is called by the "catch unload" command. It allows | |
312 | the debugger to be notified by the dynamic linker when a specified | |
313 | library file (or any library file, if filename is NULL) is | |
314 | unloaded. */ | |
315 | ||
316 | #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK | |
317 | #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
318 | error ("catch of library unloads not yet implemented on this platform") | |
319 | #endif | |
320 | ||
321 | /* Set breakpoint count to NUM. */ | |
322 | ||
323 | void | |
fba45db2 | 324 | set_breakpoint_count (int num) |
c906108c SS |
325 | { |
326 | breakpoint_count = num; | |
327 | set_internalvar (lookup_internalvar ("bpnum"), | |
328 | value_from_longest (builtin_type_int, (LONGEST) num)); | |
329 | } | |
330 | ||
331 | /* Used in run_command to zero the hit count when a new run starts. */ | |
332 | ||
333 | void | |
fba45db2 | 334 | clear_breakpoint_hit_counts (void) |
c906108c SS |
335 | { |
336 | struct breakpoint *b; | |
337 | ||
338 | ALL_BREAKPOINTS (b) | |
339 | b->hit_count = 0; | |
340 | } | |
341 | ||
342 | /* Default address, symtab and line to put a breakpoint at | |
343 | for "break" command with no arg. | |
344 | if default_breakpoint_valid is zero, the other three are | |
345 | not valid, and "break" with no arg is an error. | |
346 | ||
347 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
348 | ||
349 | int default_breakpoint_valid; | |
350 | CORE_ADDR default_breakpoint_address; | |
351 | struct symtab *default_breakpoint_symtab; | |
352 | int default_breakpoint_line; | |
353 | \f | |
354 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
355 | Advance *PP after the string and any trailing whitespace. | |
356 | ||
357 | Currently the string can either be a number or "$" followed by the name | |
358 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c JM |
359 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
360 | ||
361 | TRAILER is a character which can be found after the number; most | |
362 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 363 | static int |
fba45db2 | 364 | get_number_trailer (char **pp, int trailer) |
c906108c | 365 | { |
5c44784c | 366 | int retval = 0; /* default */ |
c906108c SS |
367 | char *p = *pp; |
368 | ||
369 | if (p == NULL) | |
370 | /* Empty line means refer to the last breakpoint. */ | |
371 | return breakpoint_count; | |
372 | else if (*p == '$') | |
373 | { | |
374 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 375 | to pass to lookup_internalvar(). */ |
c906108c SS |
376 | char *varname; |
377 | char *start = ++p; | |
378 | value_ptr val; | |
379 | ||
380 | while (isalnum (*p) || *p == '_') | |
381 | p++; | |
382 | varname = (char *) alloca (p - start + 1); | |
383 | strncpy (varname, start, p - start); | |
384 | varname[p - start] = '\0'; | |
385 | val = value_of_internalvar (lookup_internalvar (varname)); | |
5c44784c JM |
386 | if (TYPE_CODE (VALUE_TYPE (val)) == TYPE_CODE_INT) |
387 | retval = (int) value_as_long (val); | |
388 | else | |
389 | { | |
390 | printf_filtered ("Convenience variable must have integer value.\n"); | |
391 | retval = 0; | |
392 | } | |
c906108c SS |
393 | } |
394 | else | |
395 | { | |
396 | if (*p == '-') | |
397 | ++p; | |
398 | while (*p >= '0' && *p <= '9') | |
399 | ++p; | |
400 | if (p == *pp) | |
401 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
402 | { |
403 | /* Skip non-numeric token */ | |
404 | while (*p && !isspace((int) *p)) | |
405 | ++p; | |
406 | /* Return zero, which caller must interpret as error. */ | |
407 | retval = 0; | |
408 | } | |
409 | else | |
410 | retval = atoi (*pp); | |
411 | } | |
412 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
413 | { | |
414 | /* Trailing junk: return 0 and let caller print error msg. */ | |
415 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
416 | ++p; | |
417 | retval = 0; | |
c906108c | 418 | } |
c906108c SS |
419 | while (isspace (*p)) |
420 | p++; | |
421 | *pp = p; | |
422 | return retval; | |
423 | } | |
5c44784c | 424 | |
11cf8741 | 425 | |
5c44784c JM |
426 | /* Like get_number_trailer, but don't allow a trailer. */ |
427 | int | |
fba45db2 | 428 | get_number (char **pp) |
5c44784c JM |
429 | { |
430 | return get_number_trailer (pp, '\0'); | |
431 | } | |
432 | ||
433 | /* Parse a number or a range. | |
434 | * A number will be of the form handled by get_number. | |
435 | * A range will be of the form <number1> - <number2>, and | |
436 | * will represent all the integers between number1 and number2, | |
437 | * inclusive. | |
438 | * | |
439 | * While processing a range, this fuction is called iteratively; | |
440 | * At each call it will return the next value in the range. | |
441 | * | |
442 | * At the beginning of parsing a range, the char pointer PP will | |
443 | * be advanced past <number1> and left pointing at the '-' token. | |
444 | * Subsequent calls will not advance the pointer until the range | |
445 | * is completed. The call that completes the range will advance | |
446 | * pointer PP past <number2>. | |
447 | */ | |
448 | ||
449 | int | |
fba45db2 | 450 | get_number_or_range (char **pp) |
5c44784c JM |
451 | { |
452 | static int last_retval, end_value; | |
453 | static char *end_ptr; | |
454 | static int in_range = 0; | |
455 | ||
456 | if (**pp != '-') | |
457 | { | |
458 | /* Default case: pp is pointing either to a solo number, | |
459 | or to the first number of a range. */ | |
460 | last_retval = get_number_trailer (pp, '-'); | |
461 | if (**pp == '-') | |
462 | { | |
463 | char **temp; | |
464 | ||
465 | /* This is the start of a range (<number1> - <number2>). | |
466 | Skip the '-', parse and remember the second number, | |
467 | and also remember the end of the final token. */ | |
468 | ||
469 | temp = &end_ptr; | |
470 | end_ptr = *pp + 1; | |
471 | while (isspace ((int) *end_ptr)) | |
472 | end_ptr++; /* skip white space */ | |
473 | end_value = get_number (temp); | |
474 | if (end_value < last_retval) | |
475 | { | |
476 | error ("inverted range"); | |
477 | } | |
478 | else if (end_value == last_retval) | |
479 | { | |
480 | /* degenerate range (number1 == number2). Advance the | |
481 | token pointer so that the range will be treated as a | |
482 | single number. */ | |
483 | *pp = end_ptr; | |
484 | } | |
485 | else | |
486 | in_range = 1; | |
487 | } | |
488 | } | |
489 | else if (! in_range) | |
490 | error ("negative value"); | |
491 | else | |
492 | { | |
493 | /* pp points to the '-' that betokens a range. All | |
494 | number-parsing has already been done. Return the next | |
495 | integer value (one greater than the saved previous value). | |
496 | Do not advance the token pointer 'pp' until the end of range | |
497 | is reached. */ | |
498 | ||
499 | if (++last_retval == end_value) | |
500 | { | |
501 | /* End of range reached; advance token pointer. */ | |
502 | *pp = end_ptr; | |
503 | in_range = 0; | |
504 | } | |
505 | } | |
506 | return last_retval; | |
507 | } | |
508 | ||
509 | ||
c906108c SS |
510 | \f |
511 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
512 | ||
513 | static void | |
fba45db2 | 514 | condition_command (char *arg, int from_tty) |
c906108c SS |
515 | { |
516 | register struct breakpoint *b; | |
517 | char *p; | |
518 | register int bnum; | |
519 | ||
520 | if (arg == 0) | |
521 | error_no_arg ("breakpoint number"); | |
522 | ||
523 | p = arg; | |
524 | bnum = get_number (&p); | |
5c44784c JM |
525 | if (bnum == 0) |
526 | error ("Bad breakpoint argument: '%s'", arg); | |
c906108c SS |
527 | |
528 | ALL_BREAKPOINTS (b) | |
529 | if (b->number == bnum) | |
c5aa993b JM |
530 | { |
531 | if (b->cond) | |
532 | { | |
b8c9b27d | 533 | xfree (b->cond); |
c5aa993b JM |
534 | b->cond = 0; |
535 | } | |
536 | if (b->cond_string != NULL) | |
b8c9b27d | 537 | xfree (b->cond_string); |
c906108c | 538 | |
c5aa993b JM |
539 | if (*p == 0) |
540 | { | |
541 | b->cond = 0; | |
542 | b->cond_string = NULL; | |
543 | if (from_tty) | |
544 | printf_filtered ("Breakpoint %d now unconditional.\n", bnum); | |
545 | } | |
546 | else | |
547 | { | |
548 | arg = p; | |
549 | /* I don't know if it matters whether this is the string the user | |
550 | typed in or the decompiled expression. */ | |
551 | b->cond_string = savestring (arg, strlen (arg)); | |
552 | b->cond = parse_exp_1 (&arg, block_for_pc (b->address), 0); | |
553 | if (*arg) | |
554 | error ("Junk at end of expression"); | |
555 | } | |
556 | breakpoints_changed (); | |
557 | return; | |
558 | } | |
c906108c SS |
559 | |
560 | error ("No breakpoint number %d.", bnum); | |
561 | } | |
562 | ||
563 | /* ARGSUSED */ | |
564 | static void | |
fba45db2 | 565 | commands_command (char *arg, int from_tty) |
c906108c SS |
566 | { |
567 | register struct breakpoint *b; | |
568 | char *p; | |
569 | register int bnum; | |
570 | struct command_line *l; | |
571 | ||
572 | /* If we allowed this, we would have problems with when to | |
573 | free the storage, if we change the commands currently | |
574 | being read from. */ | |
575 | ||
576 | if (executing_breakpoint_commands) | |
577 | error ("Can't use the \"commands\" command among a breakpoint's commands."); | |
578 | ||
579 | p = arg; | |
580 | bnum = get_number (&p); | |
5c44784c | 581 | |
c906108c SS |
582 | if (p && *p) |
583 | error ("Unexpected extra arguments following breakpoint number."); | |
c5aa993b | 584 | |
c906108c SS |
585 | ALL_BREAKPOINTS (b) |
586 | if (b->number == bnum) | |
c5aa993b JM |
587 | { |
588 | char tmpbuf[128]; | |
53a5351d JM |
589 | sprintf (tmpbuf, |
590 | "Type commands for when breakpoint %d is hit, one per line.", | |
591 | bnum); | |
c5aa993b JM |
592 | l = read_command_lines (tmpbuf, from_tty); |
593 | free_command_lines (&b->commands); | |
594 | b->commands = l; | |
595 | breakpoints_changed (); | |
596 | return; | |
597 | } | |
c906108c SS |
598 | error ("No breakpoint number %d.", bnum); |
599 | } | |
600 | \f | |
601 | /* Like target_read_memory() but if breakpoints are inserted, return | |
602 | the shadow contents instead of the breakpoints themselves. | |
603 | ||
604 | Read "memory data" from whatever target or inferior we have. | |
605 | Returns zero if successful, errno value if not. EIO is used | |
606 | for address out of bounds. If breakpoints are inserted, returns | |
607 | shadow contents, not the breakpoints themselves. From breakpoint.c. */ | |
608 | ||
609 | int | |
fba45db2 | 610 | read_memory_nobpt (CORE_ADDR memaddr, char *myaddr, unsigned len) |
c906108c SS |
611 | { |
612 | int status; | |
613 | struct breakpoint *b; | |
614 | CORE_ADDR bp_addr = 0; | |
615 | int bp_size = 0; | |
616 | ||
617 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
618 | /* No breakpoints on this machine. */ | |
619 | return target_read_memory (memaddr, myaddr, len); | |
c5aa993b | 620 | |
c906108c | 621 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
622 | { |
623 | if (b->type == bp_none) | |
53a5351d JM |
624 | warning ("reading through apparently deleted breakpoint #%d?", |
625 | b->number); | |
c5aa993b JM |
626 | |
627 | /* memory breakpoint? */ | |
628 | if (b->type == bp_watchpoint | |
629 | || b->type == bp_hardware_watchpoint | |
630 | || b->type == bp_read_watchpoint | |
631 | || b->type == bp_access_watchpoint) | |
632 | continue; | |
633 | /* bp in memory? */ | |
634 | if (!b->inserted) | |
635 | continue; | |
636 | /* Addresses and length of the part of the breakpoint that | |
637 | we need to copy. */ | |
638 | /* XXXX The m68k, sh and h8300 have different local and remote | |
639 | breakpoint values. BREAKPOINT_FROM_PC still manages to | |
640 | correctly determine the breakpoints memory address and size | |
641 | for these targets. */ | |
642 | bp_addr = b->address; | |
643 | bp_size = 0; | |
644 | if (BREAKPOINT_FROM_PC (&bp_addr, &bp_size) == NULL) | |
645 | continue; | |
646 | if (bp_size == 0) | |
647 | /* bp isn't valid */ | |
648 | continue; | |
649 | if (bp_addr + bp_size <= memaddr) | |
650 | /* The breakpoint is entirely before the chunk of memory we | |
651 | are reading. */ | |
652 | continue; | |
653 | if (bp_addr >= memaddr + len) | |
654 | /* The breakpoint is entirely after the chunk of memory we are | |
655 | reading. */ | |
656 | continue; | |
657 | /* Copy the breakpoint from the shadow contents, and recurse for | |
658 | the things before and after. */ | |
c906108c | 659 | { |
c5aa993b JM |
660 | /* Offset within shadow_contents. */ |
661 | int bptoffset = 0; | |
c906108c | 662 | |
c5aa993b JM |
663 | if (bp_addr < memaddr) |
664 | { | |
665 | /* Only copy the second part of the breakpoint. */ | |
666 | bp_size -= memaddr - bp_addr; | |
667 | bptoffset = memaddr - bp_addr; | |
668 | bp_addr = memaddr; | |
669 | } | |
670 | ||
671 | if (bp_addr + bp_size > memaddr + len) | |
672 | { | |
673 | /* Only copy the first part of the breakpoint. */ | |
674 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
675 | } | |
676 | ||
677 | memcpy (myaddr + bp_addr - memaddr, | |
678 | b->shadow_contents + bptoffset, bp_size); | |
679 | ||
680 | if (bp_addr > memaddr) | |
681 | { | |
682 | /* Copy the section of memory before the breakpoint. */ | |
683 | status = read_memory_nobpt (memaddr, myaddr, bp_addr - memaddr); | |
684 | if (status != 0) | |
685 | return status; | |
686 | } | |
687 | ||
688 | if (bp_addr + bp_size < memaddr + len) | |
689 | { | |
690 | /* Copy the section of memory after the breakpoint. */ | |
d85310f7 MS |
691 | status = read_memory_nobpt (bp_addr + bp_size, |
692 | myaddr + bp_addr + bp_size - memaddr, | |
693 | memaddr + len - (bp_addr + bp_size)); | |
c5aa993b JM |
694 | if (status != 0) |
695 | return status; | |
696 | } | |
697 | return 0; | |
c906108c | 698 | } |
c5aa993b | 699 | } |
c906108c SS |
700 | /* Nothing overlaps. Just call read_memory_noerr. */ |
701 | return target_read_memory (memaddr, myaddr, len); | |
702 | } | |
c906108c | 703 | \f |
c5aa993b | 704 | |
c906108c SS |
705 | /* insert_breakpoints is used when starting or continuing the program. |
706 | remove_breakpoints is used when the program stops. | |
707 | Both return zero if successful, | |
708 | or an `errno' value if could not write the inferior. */ | |
709 | ||
710 | int | |
fba45db2 | 711 | insert_breakpoints (void) |
c906108c SS |
712 | { |
713 | register struct breakpoint *b, *temp; | |
53a5351d | 714 | int return_val = 0; /* return success code. */ |
c906108c SS |
715 | int val = 0; |
716 | int disabled_breaks = 0; | |
717 | ||
718 | static char message1[] = "Error inserting catchpoint %d:\n"; | |
719 | static char message[sizeof (message1) + 30]; | |
720 | ||
721 | ||
722 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 723 | { |
c2c6d25f JM |
724 | if (b->enable == permanent) |
725 | /* Permanent breakpoints cannot be inserted or removed. */ | |
726 | continue; | |
727 | else if (b->type != bp_watchpoint | |
c5aa993b JM |
728 | && b->type != bp_hardware_watchpoint |
729 | && b->type != bp_read_watchpoint | |
730 | && b->type != bp_access_watchpoint | |
731 | && b->type != bp_catch_fork | |
732 | && b->type != bp_catch_vfork | |
733 | && b->type != bp_catch_exec | |
734 | && b->type != bp_catch_throw | |
735 | && b->type != bp_catch_catch | |
736 | && b->enable != disabled | |
737 | && b->enable != shlib_disabled | |
738 | && b->enable != call_disabled | |
739 | && !b->inserted | |
740 | && !b->duplicate) | |
741 | { | |
742 | if (b->type == bp_hardware_breakpoint) | |
743 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
744 | else | |
745 | { | |
746 | /* Check to see if breakpoint is in an overlay section; | |
747 | if so, we should set the breakpoint at the LMA address. | |
748 | Only if the section is currently mapped should we ALSO | |
749 | set a break at the VMA address. */ | |
750 | if (overlay_debugging && b->section && | |
751 | section_is_overlay (b->section)) | |
752 | { | |
753 | CORE_ADDR addr; | |
754 | ||
755 | addr = overlay_unmapped_address (b->address, b->section); | |
756 | val = target_insert_breakpoint (addr, b->shadow_contents); | |
757 | /* This would be the time to check val, to see if the | |
758 | breakpoint write to the load address succeeded. | |
759 | However, this might be an ordinary occurrance, eg. if | |
760 | the unmapped overlay is in ROM. */ | |
761 | val = 0; /* in case unmapped address failed */ | |
762 | if (section_is_mapped (b->section)) | |
763 | val = target_insert_breakpoint (b->address, | |
764 | b->shadow_contents); | |
765 | } | |
766 | else /* ordinary (non-overlay) address */ | |
767 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
768 | } | |
769 | if (val) | |
770 | { | |
771 | /* Can't set the breakpoint. */ | |
c906108c | 772 | #if defined (DISABLE_UNSETTABLE_BREAK) |
c5aa993b JM |
773 | if (DISABLE_UNSETTABLE_BREAK (b->address)) |
774 | { | |
775 | /* See also: disable_breakpoints_in_shlibs. */ | |
776 | val = 0; | |
777 | b->enable = shlib_disabled; | |
778 | if (!disabled_breaks) | |
779 | { | |
780 | target_terminal_ours_for_output (); | |
53a5351d JM |
781 | warning ("Cannot insert breakpoint %d:", b->number); |
782 | warning ("Temporarily disabling shared library breakpoints:"); | |
c5aa993b JM |
783 | } |
784 | disabled_breaks = 1; | |
53a5351d | 785 | warning ("breakpoint #%d ", b->number); |
c5aa993b JM |
786 | } |
787 | else | |
c906108c | 788 | #endif |
c5aa993b JM |
789 | { |
790 | target_terminal_ours_for_output (); | |
53a5351d | 791 | warning ("Cannot insert breakpoint %d:", b->number); |
c906108c | 792 | #ifdef ONE_PROCESS_WRITETEXT |
53a5351d | 793 | warning ("The same program may be running in another process."); |
c906108c | 794 | #endif |
53a5351d | 795 | memory_error (val, b->address); /* which bombs us out */ |
c5aa993b JM |
796 | } |
797 | } | |
798 | else | |
799 | b->inserted = 1; | |
53a5351d JM |
800 | |
801 | if (val) | |
802 | return_val = val; /* remember failure */ | |
c5aa993b | 803 | } |
c906108c | 804 | else if (ep_is_exception_catchpoint (b) |
c5aa993b JM |
805 | && b->enable != disabled |
806 | && b->enable != shlib_disabled | |
807 | && b->enable != call_disabled | |
808 | && !b->inserted | |
809 | && !b->duplicate) | |
c906108c SS |
810 | |
811 | { | |
c5aa993b JM |
812 | /* If we get here, we must have a callback mechanism for exception |
813 | events -- with g++ style embedded label support, we insert | |
814 | ordinary breakpoints and not catchpoints. */ | |
53a5351d JM |
815 | /* Format possible error message */ |
816 | sprintf (message, message1, b->number); | |
c5aa993b JM |
817 | |
818 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
819 | if (val) | |
820 | { | |
821 | /* Couldn't set breakpoint for some reason */ | |
822 | target_terminal_ours_for_output (); | |
53a5351d JM |
823 | warning ("Cannot insert catchpoint %d; disabling it.", |
824 | b->number); | |
c5aa993b JM |
825 | b->enable = disabled; |
826 | } | |
827 | else | |
828 | { | |
829 | /* Bp set, now make sure callbacks are enabled */ | |
c906108c | 830 | int val; |
c5aa993b | 831 | args_for_catchpoint_enable args; |
53a5351d JM |
832 | args.kind = b->type == bp_catch_catch ? |
833 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
c906108c SS |
834 | args.enable = 1; |
835 | val = catch_errors (cover_target_enable_exception_callback, | |
836 | &args, | |
837 | message, RETURN_MASK_ALL); | |
838 | if (val != 0 && val != -1) | |
839 | { | |
840 | b->inserted = 1; | |
841 | } | |
c5aa993b | 842 | /* Check if something went wrong; val == 0 can be ignored */ |
c906108c SS |
843 | if (val == -1) |
844 | { | |
c5aa993b | 845 | /* something went wrong */ |
c906108c | 846 | target_terminal_ours_for_output (); |
53a5351d JM |
847 | warning ("Cannot insert catchpoint %d; disabling it.", |
848 | b->number); | |
c906108c SS |
849 | b->enable = disabled; |
850 | } | |
c5aa993b | 851 | } |
53a5351d JM |
852 | |
853 | if (val) | |
854 | return_val = val; /* remember failure */ | |
c906108c SS |
855 | } |
856 | ||
c5aa993b JM |
857 | else if ((b->type == bp_hardware_watchpoint || |
858 | b->type == bp_read_watchpoint || | |
859 | b->type == bp_access_watchpoint) | |
860 | && b->enable == enabled | |
c6902688 | 861 | && b->disposition != del_at_next_stop |
c5aa993b JM |
862 | && !b->inserted |
863 | && !b->duplicate) | |
864 | { | |
865 | struct frame_info *saved_frame; | |
866 | int saved_level, within_current_scope; | |
867 | value_ptr mark = value_mark (); | |
868 | value_ptr v; | |
869 | ||
870 | /* Save the current frame and level so we can restore it after | |
871 | evaluating the watchpoint expression on its own frame. */ | |
872 | saved_frame = selected_frame; | |
873 | saved_level = selected_frame_level; | |
874 | ||
875 | /* Determine if the watchpoint is within scope. */ | |
876 | if (b->exp_valid_block == NULL) | |
877 | within_current_scope = 1; | |
878 | else | |
879 | { | |
880 | struct frame_info *fi; | |
881 | ||
882 | /* There might be no current frame at this moment if we are | |
883 | resuming from a step over a breakpoint. | |
884 | Set up current frame before trying to find the watchpoint | |
885 | frame. */ | |
886 | get_current_frame (); | |
887 | fi = find_frame_addr_in_frame_chain (b->watchpoint_frame); | |
888 | within_current_scope = (fi != NULL); | |
889 | if (within_current_scope) | |
890 | select_frame (fi, -1); | |
891 | } | |
892 | ||
893 | if (within_current_scope) | |
894 | { | |
895 | /* Evaluate the expression and cut the chain of values | |
5c44784c JM |
896 | produced off from the value chain. |
897 | ||
898 | Make sure the value returned isn't lazy; we use | |
899 | laziness to determine what memory GDB actually needed | |
900 | in order to compute the value of the expression. */ | |
c5aa993b | 901 | v = evaluate_expression (b->exp); |
5c44784c | 902 | VALUE_CONTENTS(v); |
c5aa993b JM |
903 | value_release_to_mark (mark); |
904 | ||
905 | b->val_chain = v; | |
906 | b->inserted = 1; | |
907 | ||
908 | /* Look at each value on the value chain. */ | |
909 | for (; v; v = v->next) | |
910 | { | |
5c44784c JM |
911 | /* If it's a memory location, and GDB actually needed |
912 | its contents to evaluate the expression, then we | |
913 | must watch it. */ | |
914 | if (VALUE_LVAL (v) == lval_memory | |
915 | && ! VALUE_LAZY (v)) | |
c5aa993b | 916 | { |
2e70b7b9 MS |
917 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
918 | ||
919 | /* We only watch structs and arrays if user asked | |
920 | for it explicitly, never if they just happen to | |
921 | appear in the middle of some value chain. */ | |
922 | if (v == b->val_chain | |
923 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
924 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
c5aa993b | 925 | { |
2e70b7b9 MS |
926 | CORE_ADDR addr; |
927 | int len, type; | |
928 | ||
929 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
930 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
931 | type = hw_write; | |
932 | if (b->type == bp_read_watchpoint) | |
933 | type = hw_read; | |
934 | else if (b->type == bp_access_watchpoint) | |
935 | type = hw_access; | |
936 | ||
937 | val = target_insert_watchpoint (addr, len, type); | |
938 | if (val == -1) | |
939 | { | |
940 | /* Don't exit the loop, try to insert | |
941 | every value on the value chain. That's | |
942 | because we will be removing all the | |
943 | watches below, and removing a | |
944 | watchpoint we didn't insert could have | |
945 | adverse effects. */ | |
946 | b->inserted = 0; | |
947 | } | |
948 | val = 0; | |
c5aa993b | 949 | } |
c5aa993b JM |
950 | } |
951 | } | |
952 | /* Failure to insert a watchpoint on any memory value in the | |
953 | value chain brings us here. */ | |
954 | if (!b->inserted) | |
53a5351d JM |
955 | { |
956 | remove_breakpoint (b, mark_uninserted); | |
957 | warning ("Could not insert hardware watchpoint %d.", | |
958 | b->number); | |
959 | val = -1; | |
960 | } | |
c5aa993b JM |
961 | } |
962 | else | |
963 | { | |
c6902688 | 964 | printf_filtered ("Hardware watchpoint %d deleted ", b->number); |
53a5351d JM |
965 | printf_filtered ("because the program has left the block \n"); |
966 | printf_filtered ("in which its expression is valid.\n"); | |
c5aa993b JM |
967 | if (b->related_breakpoint) |
968 | b->related_breakpoint->disposition = del_at_next_stop; | |
969 | b->disposition = del_at_next_stop; | |
970 | } | |
c906108c | 971 | |
c5aa993b JM |
972 | /* Restore the frame and level. */ |
973 | if ((saved_frame != selected_frame) || | |
974 | (saved_level != selected_frame_level)) | |
c6902688 | 975 | select_frame (saved_frame, saved_level); |
53a5351d JM |
976 | |
977 | if (val) | |
978 | return_val = val; /* remember failure */ | |
c5aa993b JM |
979 | } |
980 | else if ((b->type == bp_catch_fork | |
981 | || b->type == bp_catch_vfork | |
982 | || b->type == bp_catch_exec) | |
983 | && b->enable == enabled | |
984 | && !b->inserted | |
985 | && !b->duplicate) | |
986 | { | |
987 | val = -1; | |
988 | switch (b->type) | |
989 | { | |
990 | case bp_catch_fork: | |
39f77062 | 991 | val = target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
992 | break; |
993 | case bp_catch_vfork: | |
39f77062 | 994 | val = target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
995 | break; |
996 | case bp_catch_exec: | |
39f77062 | 997 | val = target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
998 | break; |
999 | default: | |
53a5351d | 1000 | warning ("Internal error, %s line %d.", __FILE__, __LINE__); |
c5aa993b JM |
1001 | break; |
1002 | } | |
1003 | if (val < 0) | |
1004 | { | |
1005 | target_terminal_ours_for_output (); | |
53a5351d | 1006 | warning ("Cannot insert catchpoint %d.", b->number); |
c5aa993b JM |
1007 | } |
1008 | else | |
1009 | b->inserted = 1; | |
53a5351d JM |
1010 | |
1011 | if (val) | |
1012 | return_val = val; /* remember failure */ | |
c5aa993b JM |
1013 | } |
1014 | } | |
c906108c | 1015 | |
53a5351d | 1016 | return return_val; |
c906108c SS |
1017 | } |
1018 | ||
1019 | ||
1020 | int | |
fba45db2 | 1021 | remove_breakpoints (void) |
c906108c SS |
1022 | { |
1023 | register struct breakpoint *b; | |
1024 | int val; | |
1025 | ||
1026 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
1027 | { |
1028 | if (b->inserted) | |
1029 | { | |
1030 | val = remove_breakpoint (b, mark_uninserted); | |
1031 | if (val != 0) | |
1032 | return val; | |
1033 | } | |
1034 | } | |
c906108c SS |
1035 | return 0; |
1036 | } | |
1037 | ||
692590c1 | 1038 | int |
80ce1ecb | 1039 | remove_hw_watchpoints (void) |
692590c1 MS |
1040 | { |
1041 | register struct breakpoint *b; | |
1042 | int val; | |
1043 | ||
1044 | ALL_BREAKPOINTS (b) | |
1045 | { | |
1046 | if (b->inserted | |
1047 | && (b->type == bp_hardware_watchpoint | |
1048 | || b->type == bp_read_watchpoint | |
1049 | || b->type == bp_access_watchpoint)) | |
1050 | { | |
1051 | val = remove_breakpoint (b, mark_uninserted); | |
1052 | if (val != 0) | |
1053 | return val; | |
1054 | } | |
1055 | } | |
1056 | return 0; | |
1057 | } | |
1058 | ||
c906108c | 1059 | int |
fba45db2 | 1060 | reattach_breakpoints (int pid) |
c906108c SS |
1061 | { |
1062 | register struct breakpoint *b; | |
1063 | int val; | |
ce696e05 | 1064 | struct cleanup *old_chain = save_inferior_ptid (); |
c906108c | 1065 | |
ce696e05 KB |
1066 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1067 | inferior_ptid = pid_to_ptid (pid); | |
c906108c | 1068 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1069 | { |
1070 | if (b->inserted) | |
1071 | { | |
1072 | remove_breakpoint (b, mark_inserted); | |
1073 | if (b->type == bp_hardware_breakpoint) | |
1074 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
1075 | else | |
1076 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
1077 | if (val != 0) | |
1078 | { | |
ce696e05 | 1079 | do_cleanups (old_chain); |
c5aa993b JM |
1080 | return val; |
1081 | } | |
1082 | } | |
1083 | } | |
ce696e05 | 1084 | do_cleanups (old_chain); |
c906108c SS |
1085 | return 0; |
1086 | } | |
1087 | ||
1088 | void | |
fba45db2 | 1089 | update_breakpoints_after_exec (void) |
c906108c | 1090 | { |
c5aa993b JM |
1091 | struct breakpoint *b; |
1092 | struct breakpoint *temp; | |
c906108c SS |
1093 | |
1094 | /* Doing this first prevents the badness of having delete_breakpoint() | |
1095 | write a breakpoint's current "shadow contents" to lift the bp. That | |
1096 | shadow is NOT valid after an exec()! */ | |
1097 | mark_breakpoints_out (); | |
1098 | ||
1099 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1100 | { |
1101 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1102 | if (b->type == bp_shlib_event) | |
1103 | { | |
1104 | delete_breakpoint (b); | |
1105 | continue; | |
1106 | } | |
c906108c | 1107 | |
c4093a6a JM |
1108 | /* Thread event breakpoints must be set anew after an exec(). */ |
1109 | if (b->type == bp_thread_event) | |
1110 | { | |
1111 | delete_breakpoint (b); | |
1112 | continue; | |
1113 | } | |
1114 | ||
c5aa993b JM |
1115 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1116 | if (b->type == bp_step_resume) | |
1117 | { | |
1118 | delete_breakpoint (b); | |
1119 | continue; | |
1120 | } | |
1121 | ||
1122 | /* Ditto the sigtramp handler breakpoints. */ | |
1123 | if (b->type == bp_through_sigtramp) | |
1124 | { | |
1125 | delete_breakpoint (b); | |
1126 | continue; | |
1127 | } | |
1128 | ||
1129 | /* Ditto the exception-handling catchpoints. */ | |
1130 | if ((b->type == bp_catch_catch) || (b->type == bp_catch_throw)) | |
1131 | { | |
1132 | delete_breakpoint (b); | |
1133 | continue; | |
1134 | } | |
1135 | ||
1136 | /* Don't delete an exec catchpoint, because else the inferior | |
1137 | won't stop when it ought! | |
1138 | ||
1139 | Similarly, we probably ought to keep vfork catchpoints, 'cause | |
53a5351d JM |
1140 | on this target, we may not be able to stop when the vfork is |
1141 | seen, but only when the subsequent exec is seen. (And because | |
1142 | deleting fork catchpoints here but not vfork catchpoints will | |
1143 | seem mysterious to users, keep those too.) | |
c5aa993b JM |
1144 | |
1145 | ??rehrauer: Let's hope that merely clearing out this catchpoint's | |
1146 | target address field, if any, is sufficient to have it be reset | |
644a1fe1 JB |
1147 | automagically. Certainly on HP-UX that's true. |
1148 | ||
1149 | Jim Blandy <jimb@redhat.com>: Actually, zero is a perfectly | |
1150 | valid code address on some platforms (like the mn10200 and | |
1151 | mn10300 simulators). We shouldn't assign any special | |
1152 | interpretation to a breakpoint with a zero address. And in | |
1153 | fact, GDB doesn't --- I can't see what that comment above is | |
1154 | talking about. As far as I can tell, setting the address of a | |
1155 | bp_catch_exec/bp_catch_vfork/bp_catch_fork breakpoint to zero | |
1156 | is meaningless, since those are implemented with HP-UX kernel | |
1157 | hackery, not by storing breakpoint instructions somewhere. */ | |
c5aa993b JM |
1158 | if ((b->type == bp_catch_exec) || |
1159 | (b->type == bp_catch_vfork) || | |
1160 | (b->type == bp_catch_fork)) | |
1161 | { | |
1162 | b->address = (CORE_ADDR) NULL; | |
1163 | continue; | |
1164 | } | |
1165 | ||
1166 | /* bp_finish is a special case. The only way we ought to be able | |
1167 | to see one of these when an exec() has happened, is if the user | |
1168 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1169 | carries them to the call-site of the current callee, by setting | |
1170 | a temporary bp there and resuming. But in this case, the finish | |
1171 | will carry them entirely through the vfork & exec. | |
1172 | ||
1173 | We don't want to allow a bp_finish to remain inserted now. But | |
1174 | we can't safely delete it, 'cause finish_command has a handle to | |
1175 | the bp on a bpstat, and will later want to delete it. There's a | |
1176 | chance (and I've seen it happen) that if we delete the bp_finish | |
1177 | here, that its storage will get reused by the time finish_command | |
1178 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1179 | We really must allow finish_command to delete a bp_finish. | |
1180 | ||
53a5351d JM |
1181 | In the absense of a general solution for the "how do we know |
1182 | it's safe to delete something others may have handles to?" | |
1183 | problem, what we'll do here is just uninsert the bp_finish, and | |
1184 | let finish_command delete it. | |
1185 | ||
1186 | (We know the bp_finish is "doomed" in the sense that it's | |
1187 | momentary, and will be deleted as soon as finish_command sees | |
1188 | the inferior stopped. So it doesn't matter that the bp's | |
1189 | address is probably bogus in the new a.out, unlike e.g., the | |
1190 | solib breakpoints.) */ | |
c5aa993b | 1191 | |
c5aa993b JM |
1192 | if (b->type == bp_finish) |
1193 | { | |
1194 | continue; | |
1195 | } | |
1196 | ||
1197 | /* Without a symbolic address, we have little hope of the | |
1198 | pre-exec() address meaning the same thing in the post-exec() | |
1199 | a.out. */ | |
1200 | if (b->addr_string == NULL) | |
1201 | { | |
1202 | delete_breakpoint (b); | |
1203 | continue; | |
1204 | } | |
1205 | ||
1206 | /* If this breakpoint has survived the above battery of checks, then | |
1207 | it must have a symbolic address. Be sure that it gets reevaluated | |
644a1fe1 JB |
1208 | to a target address, rather than reusing the old evaluation. |
1209 | ||
1210 | Jim Blandy <jimb@redhat.com>: As explained above in the comment | |
1211 | for bp_catch_exec and friends, I'm pretty sure this is entirely | |
1212 | unnecessary. A call to breakpoint_re_set_one always recomputes | |
1213 | the breakpoint's address from scratch, or deletes it if it can't. | |
1214 | So I think this assignment could be deleted without effect. */ | |
c5aa993b JM |
1215 | b->address = (CORE_ADDR) NULL; |
1216 | } | |
c906108c SS |
1217 | } |
1218 | ||
1219 | int | |
fba45db2 | 1220 | detach_breakpoints (int pid) |
c906108c SS |
1221 | { |
1222 | register struct breakpoint *b; | |
1223 | int val; | |
ce696e05 | 1224 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1225 | |
39f77062 KB |
1226 | if (pid == PIDGET (inferior_ptid)) |
1227 | error ("Cannot detach breakpoints of inferior_ptid"); | |
c5aa993b | 1228 | |
ce696e05 KB |
1229 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1230 | inferior_ptid = pid_to_ptid (pid); | |
c906108c | 1231 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1232 | { |
1233 | if (b->inserted) | |
1234 | { | |
1235 | val = remove_breakpoint (b, mark_inserted); | |
1236 | if (val != 0) | |
1237 | { | |
ce696e05 | 1238 | do_cleanups (old_chain); |
c5aa993b JM |
1239 | return val; |
1240 | } | |
1241 | } | |
1242 | } | |
ce696e05 | 1243 | do_cleanups (old_chain); |
c906108c SS |
1244 | return 0; |
1245 | } | |
1246 | ||
1247 | static int | |
fba45db2 | 1248 | remove_breakpoint (struct breakpoint *b, insertion_state_t is) |
c906108c SS |
1249 | { |
1250 | int val; | |
c5aa993b | 1251 | |
c2c6d25f JM |
1252 | if (b->enable == permanent) |
1253 | /* Permanent breakpoints cannot be inserted or removed. */ | |
1254 | return 0; | |
1255 | ||
c906108c | 1256 | if (b->type == bp_none) |
53a5351d JM |
1257 | warning ("attempted to remove apparently deleted breakpoint #%d?", |
1258 | b->number); | |
c906108c SS |
1259 | |
1260 | if (b->type != bp_watchpoint | |
1261 | && b->type != bp_hardware_watchpoint | |
1262 | && b->type != bp_read_watchpoint | |
1263 | && b->type != bp_access_watchpoint | |
1264 | && b->type != bp_catch_fork | |
1265 | && b->type != bp_catch_vfork | |
1266 | && b->type != bp_catch_exec | |
1267 | && b->type != bp_catch_catch | |
1268 | && b->type != bp_catch_throw) | |
c906108c SS |
1269 | { |
1270 | if (b->type == bp_hardware_breakpoint) | |
c5aa993b | 1271 | val = target_remove_hw_breakpoint (b->address, b->shadow_contents); |
c906108c SS |
1272 | else |
1273 | { | |
1274 | /* Check to see if breakpoint is in an overlay section; | |
1275 | if so, we should remove the breakpoint at the LMA address. | |
1276 | If that is not equal to the raw address, then we should | |
7e73cedf | 1277 | presumably remove the breakpoint there as well. */ |
c5aa993b | 1278 | if (overlay_debugging && b->section && |
c906108c SS |
1279 | section_is_overlay (b->section)) |
1280 | { | |
1281 | CORE_ADDR addr; | |
1282 | ||
1283 | addr = overlay_unmapped_address (b->address, b->section); | |
1284 | val = target_remove_breakpoint (addr, b->shadow_contents); | |
1285 | /* This would be the time to check val, to see if the | |
c5aa993b JM |
1286 | shadow breakpoint write to the load address succeeded. |
1287 | However, this might be an ordinary occurrance, eg. if | |
1288 | the unmapped overlay is in ROM. */ | |
1289 | val = 0; /* in case unmapped address failed */ | |
c906108c | 1290 | if (section_is_mapped (b->section)) |
c5aa993b | 1291 | val = target_remove_breakpoint (b->address, |
c906108c SS |
1292 | b->shadow_contents); |
1293 | } | |
c5aa993b JM |
1294 | else /* ordinary (non-overlay) address */ |
1295 | val = target_remove_breakpoint (b->address, b->shadow_contents); | |
c906108c SS |
1296 | } |
1297 | if (val) | |
1298 | return val; | |
1299 | b->inserted = (is == mark_inserted); | |
1300 | } | |
1301 | else if ((b->type == bp_hardware_watchpoint || | |
c5aa993b JM |
1302 | b->type == bp_read_watchpoint || |
1303 | b->type == bp_access_watchpoint) | |
c906108c | 1304 | && b->enable == enabled |
c5aa993b | 1305 | && !b->duplicate) |
c906108c SS |
1306 | { |
1307 | value_ptr v, n; | |
c5aa993b | 1308 | |
c906108c SS |
1309 | b->inserted = (is == mark_inserted); |
1310 | /* Walk down the saved value chain. */ | |
1311 | for (v = b->val_chain; v; v = v->next) | |
1312 | { | |
1313 | /* For each memory reference remove the watchpoint | |
1314 | at that address. */ | |
5c44784c JM |
1315 | if (VALUE_LVAL (v) == lval_memory |
1316 | && ! VALUE_LAZY (v)) | |
c906108c | 1317 | { |
2e70b7b9 MS |
1318 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
1319 | ||
1320 | if (v == b->val_chain | |
1321 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
1322 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1323 | { | |
1324 | CORE_ADDR addr; | |
1325 | int len, type; | |
1326 | ||
1327 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
1328 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
1329 | type = hw_write; | |
1330 | if (b->type == bp_read_watchpoint) | |
1331 | type = hw_read; | |
1332 | else if (b->type == bp_access_watchpoint) | |
1333 | type = hw_access; | |
1334 | ||
1335 | val = target_remove_watchpoint (addr, len, type); | |
1336 | if (val == -1) | |
1337 | b->inserted = 1; | |
1338 | val = 0; | |
1339 | } | |
c906108c SS |
1340 | } |
1341 | } | |
1342 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
1343 | if ((is == mark_uninserted) && (b->inserted)) | |
53a5351d | 1344 | warning ("Could not remove hardware watchpoint %d.", |
c906108c | 1345 | b->number); |
c5aa993b | 1346 | |
c906108c | 1347 | /* Free the saved value chain. We will construct a new one |
c5aa993b | 1348 | the next time the watchpoint is inserted. */ |
c906108c SS |
1349 | for (v = b->val_chain; v; v = n) |
1350 | { | |
1351 | n = v->next; | |
1352 | value_free (v); | |
1353 | } | |
1354 | b->val_chain = NULL; | |
1355 | } | |
1356 | else if ((b->type == bp_catch_fork || | |
c5aa993b JM |
1357 | b->type == bp_catch_vfork || |
1358 | b->type == bp_catch_exec) | |
c906108c | 1359 | && b->enable == enabled |
c5aa993b | 1360 | && !b->duplicate) |
c906108c SS |
1361 | { |
1362 | val = -1; | |
1363 | switch (b->type) | |
c5aa993b JM |
1364 | { |
1365 | case bp_catch_fork: | |
39f77062 | 1366 | val = target_remove_fork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1367 | break; |
1368 | case bp_catch_vfork: | |
39f77062 | 1369 | val = target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1370 | break; |
1371 | case bp_catch_exec: | |
39f77062 | 1372 | val = target_remove_exec_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b | 1373 | break; |
ac9a91a7 | 1374 | default: |
53a5351d | 1375 | warning ("Internal error, %s line %d.", __FILE__, __LINE__); |
ac9a91a7 | 1376 | break; |
c5aa993b | 1377 | } |
c906108c SS |
1378 | if (val) |
1379 | return val; | |
1380 | b->inserted = (is == mark_inserted); | |
1381 | } | |
1382 | else if ((b->type == bp_catch_catch || | |
c5aa993b JM |
1383 | b->type == bp_catch_throw) |
1384 | && b->enable == enabled | |
1385 | && !b->duplicate) | |
c906108c SS |
1386 | { |
1387 | ||
c5aa993b | 1388 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1389 | if (val) |
c5aa993b | 1390 | return val; |
c906108c SS |
1391 | b->inserted = (is == mark_inserted); |
1392 | } | |
1393 | else if (ep_is_exception_catchpoint (b) | |
c5aa993b JM |
1394 | && b->inserted /* sometimes previous insert doesn't happen */ |
1395 | && b->enable == enabled | |
1396 | && !b->duplicate) | |
c906108c SS |
1397 | { |
1398 | ||
c5aa993b | 1399 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1400 | if (val) |
c5aa993b JM |
1401 | return val; |
1402 | ||
c906108c SS |
1403 | b->inserted = (is == mark_inserted); |
1404 | } | |
1405 | ||
1406 | return 0; | |
1407 | } | |
1408 | ||
1409 | /* Clear the "inserted" flag in all breakpoints. */ | |
1410 | ||
1411 | void | |
fba45db2 | 1412 | mark_breakpoints_out (void) |
c906108c SS |
1413 | { |
1414 | register struct breakpoint *b; | |
1415 | ||
1416 | ALL_BREAKPOINTS (b) | |
1417 | b->inserted = 0; | |
1418 | } | |
1419 | ||
53a5351d JM |
1420 | /* Clear the "inserted" flag in all breakpoints and delete any |
1421 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1422 | |
1423 | Plus other such housekeeping that has to be done for breakpoints | |
1424 | between runs. | |
1425 | ||
53a5351d JM |
1426 | Note: this function gets called at the end of a run (by |
1427 | generic_mourn_inferior) and when a run begins (by | |
1428 | init_wait_for_inferior). */ | |
c906108c SS |
1429 | |
1430 | ||
1431 | ||
1432 | void | |
fba45db2 | 1433 | breakpoint_init_inferior (enum inf_context context) |
c906108c SS |
1434 | { |
1435 | register struct breakpoint *b, *temp; | |
1436 | static int warning_needed = 0; | |
1437 | ||
1438 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1439 | { |
1440 | b->inserted = 0; | |
c906108c | 1441 | |
c5aa993b JM |
1442 | switch (b->type) |
1443 | { | |
1444 | case bp_call_dummy: | |
1445 | case bp_watchpoint_scope: | |
c906108c | 1446 | |
c5aa993b JM |
1447 | /* If the call dummy breakpoint is at the entry point it will |
1448 | cause problems when the inferior is rerun, so we better | |
1449 | get rid of it. | |
c906108c | 1450 | |
c5aa993b JM |
1451 | Also get rid of scope breakpoints. */ |
1452 | delete_breakpoint (b); | |
1453 | break; | |
c906108c | 1454 | |
c5aa993b JM |
1455 | case bp_watchpoint: |
1456 | case bp_hardware_watchpoint: | |
1457 | case bp_read_watchpoint: | |
1458 | case bp_access_watchpoint: | |
c906108c | 1459 | |
c5aa993b JM |
1460 | /* Likewise for watchpoints on local expressions. */ |
1461 | if (b->exp_valid_block != NULL) | |
1462 | delete_breakpoint (b); | |
1463 | break; | |
1464 | default: | |
1465 | /* Likewise for exception catchpoints in dynamic-linked | |
1466 | executables where required */ | |
1467 | if (ep_is_exception_catchpoint (b) && | |
1468 | exception_catchpoints_are_fragile) | |
1469 | { | |
1470 | warning_needed = 1; | |
c906108c | 1471 | delete_breakpoint (b); |
c5aa993b JM |
1472 | } |
1473 | break; | |
1474 | } | |
1475 | } | |
c906108c SS |
1476 | |
1477 | if (exception_catchpoints_are_fragile) | |
1478 | exception_support_initialized = 0; | |
1479 | ||
c5aa993b | 1480 | /* Don't issue the warning unless it's really needed... */ |
c906108c SS |
1481 | if (warning_needed && (context != inf_exited)) |
1482 | { | |
53a5351d JM |
1483 | warning ("Exception catchpoints from last run were deleted."); |
1484 | warning ("You must reinsert them explicitly."); | |
c906108c | 1485 | warning_needed = 0; |
c5aa993b | 1486 | } |
c906108c SS |
1487 | } |
1488 | ||
c2c6d25f JM |
1489 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1490 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1491 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1492 | permanent breakpoint. | |
1493 | - When continuing from a location with an ordinary breakpoint, we | |
1494 | actually single step once before calling insert_breakpoints. | |
1495 | - When continuing from a localion with a permanent breakpoint, we | |
1496 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1497 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1498 | |
c2c6d25f | 1499 | enum breakpoint_here |
fba45db2 | 1500 | breakpoint_here_p (CORE_ADDR pc) |
c906108c SS |
1501 | { |
1502 | register struct breakpoint *b; | |
c2c6d25f | 1503 | int any_breakpoint_here = 0; |
c906108c SS |
1504 | |
1505 | ALL_BREAKPOINTS (b) | |
c2c6d25f JM |
1506 | if ((b->enable == enabled |
1507 | || b->enable == permanent) | |
c906108c | 1508 | && b->address == pc) /* bp is enabled and matches pc */ |
c2c6d25f JM |
1509 | { |
1510 | if (overlay_debugging && | |
1511 | section_is_overlay (b->section) && | |
1512 | !section_is_mapped (b->section)) | |
1513 | continue; /* unmapped overlay -- can't be a match */ | |
1514 | else if (b->enable == permanent) | |
1515 | return permanent_breakpoint_here; | |
1516 | else | |
1517 | any_breakpoint_here = 1; | |
1518 | } | |
c906108c | 1519 | |
c2c6d25f | 1520 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1521 | } |
1522 | ||
c2c6d25f | 1523 | |
53a5351d JM |
1524 | /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(), |
1525 | but it only returns true if there is actually a breakpoint inserted | |
1526 | at PC. */ | |
c906108c SS |
1527 | |
1528 | int | |
fba45db2 | 1529 | breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c SS |
1530 | { |
1531 | register struct breakpoint *b; | |
1532 | ||
1533 | ALL_BREAKPOINTS (b) | |
1534 | if (b->inserted | |
1535 | && b->address == pc) /* bp is inserted and matches pc */ | |
c5aa993b JM |
1536 | { |
1537 | if (overlay_debugging && | |
1538 | section_is_overlay (b->section) && | |
1539 | !section_is_mapped (b->section)) | |
1540 | continue; /* unmapped overlay -- can't be a match */ | |
1541 | else | |
1542 | return 1; | |
1543 | } | |
c906108c SS |
1544 | |
1545 | return 0; | |
1546 | } | |
1547 | ||
53a5351d JM |
1548 | /* Return nonzero if FRAME is a dummy frame. We can't use |
1549 | PC_IN_CALL_DUMMY because figuring out the saved SP would take too | |
1550 | much time, at least using get_saved_register on the 68k. This | |
1551 | means that for this function to work right a port must use the | |
1552 | bp_call_dummy breakpoint. */ | |
c906108c SS |
1553 | |
1554 | int | |
fba45db2 | 1555 | frame_in_dummy (struct frame_info *frame) |
c906108c | 1556 | { |
c906108c SS |
1557 | struct breakpoint *b; |
1558 | ||
c5aa993b | 1559 | if (!CALL_DUMMY_P) |
7a292a7a SS |
1560 | return 0; |
1561 | ||
1562 | if (USE_GENERIC_DUMMY_FRAMES) | |
1563 | return generic_pc_in_call_dummy (frame->pc, frame->frame, frame->frame); | |
c5aa993b | 1564 | |
c906108c | 1565 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1566 | { |
1567 | if (b->type == bp_call_dummy | |
1568 | && b->frame == frame->frame | |
1569 | /* We need to check the PC as well as the frame on the sparc, | |
1570 | for signals.exp in the testsuite. */ | |
1571 | && (frame->pc | |
1572 | >= (b->address | |
1573 | - SIZEOF_CALL_DUMMY_WORDS / sizeof (LONGEST) * REGISTER_SIZE)) | |
1574 | && frame->pc <= b->address) | |
1575 | return 1; | |
1576 | } | |
c906108c SS |
1577 | return 0; |
1578 | } | |
1579 | ||
2c8f79c2 MS |
1580 | /* breakpoint_thread_match (PC, PID) returns true if the breakpoint at |
1581 | PC is valid for process/thread PID. */ | |
c906108c SS |
1582 | |
1583 | int | |
39f77062 | 1584 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c SS |
1585 | { |
1586 | struct breakpoint *b; | |
1587 | int thread; | |
1588 | ||
39f77062 | 1589 | thread = pid_to_thread_id (ptid); |
c906108c SS |
1590 | |
1591 | ALL_BREAKPOINTS (b) | |
1592 | if (b->enable != disabled | |
1593 | && b->enable != shlib_disabled | |
1594 | && b->enable != call_disabled | |
1595 | && b->address == pc | |
1596 | && (b->thread == -1 || b->thread == thread)) | |
c5aa993b JM |
1597 | { |
1598 | if (overlay_debugging && | |
1599 | section_is_overlay (b->section) && | |
1600 | !section_is_mapped (b->section)) | |
1601 | continue; /* unmapped overlay -- can't be a match */ | |
1602 | else | |
1603 | return 1; | |
1604 | } | |
c906108c SS |
1605 | |
1606 | return 0; | |
1607 | } | |
c906108c | 1608 | \f |
c5aa993b | 1609 | |
c906108c SS |
1610 | /* bpstat stuff. External routines' interfaces are documented |
1611 | in breakpoint.h. */ | |
1612 | ||
1613 | int | |
fba45db2 | 1614 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c SS |
1615 | { |
1616 | return | |
1617 | (ep->type == bp_catch_load) | |
1618 | || (ep->type == bp_catch_unload) | |
1619 | || (ep->type == bp_catch_fork) | |
1620 | || (ep->type == bp_catch_vfork) | |
1621 | || (ep->type == bp_catch_exec) | |
1622 | || (ep->type == bp_catch_catch) | |
d85310f7 | 1623 | || (ep->type == bp_catch_throw); |
c906108c | 1624 | |
c5aa993b | 1625 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c | 1626 | } |
c5aa993b | 1627 | |
c906108c | 1628 | int |
fba45db2 | 1629 | ep_is_shlib_catchpoint (struct breakpoint *ep) |
c906108c SS |
1630 | { |
1631 | return | |
1632 | (ep->type == bp_catch_load) | |
d85310f7 | 1633 | || (ep->type == bp_catch_unload); |
c906108c SS |
1634 | } |
1635 | ||
1636 | int | |
fba45db2 | 1637 | ep_is_exception_catchpoint (struct breakpoint *ep) |
c906108c SS |
1638 | { |
1639 | return | |
1640 | (ep->type == bp_catch_catch) | |
d85310f7 | 1641 | || (ep->type == bp_catch_throw); |
c906108c SS |
1642 | } |
1643 | ||
1644 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
1645 | Also free any storage that is part of a bpstat. */ | |
1646 | ||
1647 | void | |
fba45db2 | 1648 | bpstat_clear (bpstat *bsp) |
c906108c SS |
1649 | { |
1650 | bpstat p; | |
1651 | bpstat q; | |
1652 | ||
1653 | if (bsp == 0) | |
1654 | return; | |
1655 | p = *bsp; | |
1656 | while (p != NULL) | |
1657 | { | |
1658 | q = p->next; | |
1659 | if (p->old_val != NULL) | |
1660 | value_free (p->old_val); | |
b8c9b27d | 1661 | xfree (p); |
c906108c SS |
1662 | p = q; |
1663 | } | |
1664 | *bsp = NULL; | |
1665 | } | |
1666 | ||
1667 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1668 | is part of the bpstat is copied as well. */ | |
1669 | ||
1670 | bpstat | |
fba45db2 | 1671 | bpstat_copy (bpstat bs) |
c906108c SS |
1672 | { |
1673 | bpstat p = NULL; | |
1674 | bpstat tmp; | |
1675 | bpstat retval = NULL; | |
1676 | ||
1677 | if (bs == NULL) | |
1678 | return bs; | |
1679 | ||
1680 | for (; bs != NULL; bs = bs->next) | |
1681 | { | |
1682 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
1683 | memcpy (tmp, bs, sizeof (*tmp)); | |
1684 | if (p == NULL) | |
1685 | /* This is the first thing in the chain. */ | |
1686 | retval = tmp; | |
1687 | else | |
1688 | p->next = tmp; | |
1689 | p = tmp; | |
1690 | } | |
1691 | p->next = NULL; | |
1692 | return retval; | |
1693 | } | |
1694 | ||
1695 | /* Find the bpstat associated with this breakpoint */ | |
1696 | ||
1697 | bpstat | |
fba45db2 | 1698 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 1699 | { |
c5aa993b JM |
1700 | if (bsp == NULL) |
1701 | return NULL; | |
c906108c | 1702 | |
c5aa993b JM |
1703 | for (; bsp != NULL; bsp = bsp->next) |
1704 | { | |
1705 | if (bsp->breakpoint_at == breakpoint) | |
1706 | return bsp; | |
1707 | } | |
c906108c SS |
1708 | return NULL; |
1709 | } | |
1710 | ||
1711 | /* Find a step_resume breakpoint associated with this bpstat. | |
1712 | (If there are multiple step_resume bp's on the list, this function | |
1713 | will arbitrarily pick one.) | |
1714 | ||
1715 | It is an error to use this function if BPSTAT doesn't contain a | |
1716 | step_resume breakpoint. | |
1717 | ||
1718 | See wait_for_inferior's use of this function. */ | |
1719 | struct breakpoint * | |
fba45db2 | 1720 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c SS |
1721 | { |
1722 | if (bsp == NULL) | |
1723 | error ("Internal error (bpstat_find_step_resume_breakpoint)"); | |
1724 | ||
1725 | for (; bsp != NULL; bsp = bsp->next) | |
1726 | { | |
1727 | if ((bsp->breakpoint_at != NULL) && | |
c5aa993b JM |
1728 | (bsp->breakpoint_at->type == bp_step_resume)) |
1729 | return bsp->breakpoint_at; | |
c906108c SS |
1730 | } |
1731 | ||
1732 | error ("Internal error (no step_resume breakpoint found)"); | |
1733 | } | |
1734 | ||
1735 | ||
1736 | /* Return the breakpoint number of the first breakpoint we are stopped | |
1737 | at. *BSP upon return is a bpstat which points to the remaining | |
1738 | breakpoints stopped at (but which is not guaranteed to be good for | |
1739 | anything but further calls to bpstat_num). | |
1740 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
1741 | ||
1742 | int | |
fba45db2 | 1743 | bpstat_num (bpstat *bsp) |
c906108c SS |
1744 | { |
1745 | struct breakpoint *b; | |
1746 | ||
1747 | if ((*bsp) == NULL) | |
1748 | return 0; /* No more breakpoint values */ | |
1749 | else | |
1750 | { | |
1751 | b = (*bsp)->breakpoint_at; | |
1752 | *bsp = (*bsp)->next; | |
1753 | if (b == NULL) | |
1754 | return -1; /* breakpoint that's been deleted since */ | |
1755 | else | |
c5aa993b | 1756 | return b->number; /* We have its number */ |
c906108c SS |
1757 | } |
1758 | } | |
1759 | ||
1760 | /* Modify BS so that the actions will not be performed. */ | |
1761 | ||
1762 | void | |
fba45db2 | 1763 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
1764 | { |
1765 | for (; bs != NULL; bs = bs->next) | |
1766 | { | |
1767 | bs->commands = NULL; | |
1768 | if (bs->old_val != NULL) | |
1769 | { | |
1770 | value_free (bs->old_val); | |
1771 | bs->old_val = NULL; | |
1772 | } | |
1773 | } | |
1774 | } | |
1775 | ||
1776 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
1777 | /* ARGSUSED */ | |
1778 | static void | |
fba45db2 | 1779 | cleanup_executing_breakpoints (PTR ignore) |
c906108c SS |
1780 | { |
1781 | executing_breakpoint_commands = 0; | |
1782 | } | |
1783 | ||
1784 | /* Execute all the commands associated with all the breakpoints at this | |
1785 | location. Any of these commands could cause the process to proceed | |
1786 | beyond this point, etc. We look out for such changes by checking | |
1787 | the global "breakpoint_proceeded" after each command. */ | |
1788 | ||
1789 | void | |
fba45db2 | 1790 | bpstat_do_actions (bpstat *bsp) |
c906108c SS |
1791 | { |
1792 | bpstat bs; | |
1793 | struct cleanup *old_chain; | |
1794 | struct command_line *cmd; | |
1795 | ||
1796 | /* Avoid endless recursion if a `source' command is contained | |
1797 | in bs->commands. */ | |
1798 | if (executing_breakpoint_commands) | |
1799 | return; | |
1800 | ||
1801 | executing_breakpoint_commands = 1; | |
1802 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
1803 | ||
1804 | top: | |
1805 | /* Note that (as of this writing), our callers all appear to | |
1806 | be passing us the address of global stop_bpstat. And, if | |
1807 | our calls to execute_control_command cause the inferior to | |
1808 | proceed, that global (and hence, *bsp) will change. | |
1809 | ||
1810 | We must be careful to not touch *bsp unless the inferior | |
1811 | has not proceeded. */ | |
1812 | ||
1813 | /* This pointer will iterate over the list of bpstat's. */ | |
1814 | bs = *bsp; | |
1815 | ||
1816 | breakpoint_proceeded = 0; | |
1817 | for (; bs != NULL; bs = bs->next) | |
1818 | { | |
1819 | cmd = bs->commands; | |
1820 | while (cmd != NULL) | |
1821 | { | |
1822 | execute_control_command (cmd); | |
1823 | ||
1824 | if (breakpoint_proceeded) | |
1825 | break; | |
1826 | else | |
1827 | cmd = cmd->next; | |
1828 | } | |
1829 | if (breakpoint_proceeded) | |
1830 | /* The inferior is proceeded by the command; bomb out now. | |
1831 | The bpstat chain has been blown away by wait_for_inferior. | |
1832 | But since execution has stopped again, there is a new bpstat | |
1833 | to look at, so start over. */ | |
1834 | goto top; | |
1835 | else | |
1836 | bs->commands = NULL; | |
1837 | } | |
1838 | ||
1839 | executing_breakpoint_commands = 0; | |
1840 | discard_cleanups (old_chain); | |
1841 | } | |
1842 | ||
e514a9d6 | 1843 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 1844 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
1845 | by having it set different print_it values. |
1846 | ||
1847 | Current scheme: When we stop, bpstat_print() is called. It loops | |
1848 | through the bpstat list of things causing this stop, calling the | |
1849 | print_bp_stop_message function on each one. The behavior of the | |
1850 | print_bp_stop_message function depends on the print_it field of | |
1851 | bpstat. If such field so indicates, call this function here. | |
1852 | ||
1853 | Return values from this routine (ultimately used by bpstat_print() | |
1854 | and normal_stop() to decide what to do): | |
1855 | PRINT_NOTHING: Means we already printed all we needed to print, | |
1856 | don't print anything else. | |
1857 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
1858 | that something to be followed by a location. | |
1859 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
1860 | that something to be followed by a location. | |
1861 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
1862 | analysis. */ | |
c906108c | 1863 | |
917317f4 | 1864 | static enum print_stop_action |
fba45db2 | 1865 | print_it_typical (bpstat bs) |
c906108c | 1866 | { |
8b93c638 JM |
1867 | #ifdef UI_OUT |
1868 | struct cleanup *old_chain; | |
1869 | struct ui_stream *stb; | |
1870 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 1871 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
8b93c638 | 1872 | #endif /* UI_OUT */ |
c906108c SS |
1873 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
1874 | which has since been deleted. */ | |
e514a9d6 | 1875 | if (bs->breakpoint_at == NULL) |
917317f4 | 1876 | return PRINT_UNKNOWN; |
c906108c | 1877 | |
e514a9d6 | 1878 | switch (bs->breakpoint_at->type) |
c906108c | 1879 | { |
e514a9d6 JM |
1880 | case bp_breakpoint: |
1881 | case bp_hardware_breakpoint: | |
8b93c638 JM |
1882 | #ifdef UI_OUT |
1883 | annotate_breakpoint (bs->breakpoint_at->number); | |
1884 | ui_out_text (uiout, "\nBreakpoint "); | |
fb40c209 AC |
1885 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
1886 | ui_out_field_string (uiout, "reason", "breakpoint-hit"); | |
8b93c638 JM |
1887 | ui_out_field_int (uiout, "bkptno", bs->breakpoint_at->number); |
1888 | ui_out_text (uiout, ", "); | |
1889 | return PRINT_SRC_AND_LOC; | |
1890 | #else | |
e514a9d6 JM |
1891 | /* I think the user probably only wants to see one breakpoint |
1892 | number, not all of them. */ | |
1893 | annotate_breakpoint (bs->breakpoint_at->number); | |
1894 | printf_filtered ("\nBreakpoint %d, ", bs->breakpoint_at->number); | |
917317f4 | 1895 | return PRINT_SRC_AND_LOC; |
8b93c638 | 1896 | #endif |
e514a9d6 JM |
1897 | break; |
1898 | ||
1899 | case bp_shlib_event: | |
917317f4 JM |
1900 | /* Did we stop because the user set the stop_on_solib_events |
1901 | variable? (If so, we report this as a generic, "Stopped due | |
1902 | to shlib event" message.) */ | |
e514a9d6 JM |
1903 | printf_filtered ("Stopped due to shared library event\n"); |
1904 | return PRINT_NOTHING; | |
1905 | break; | |
1906 | ||
c4093a6a JM |
1907 | case bp_thread_event: |
1908 | /* Not sure how we will get here. | |
1909 | GDB should not stop for these breakpoints. */ | |
1910 | printf_filtered ("Thread Event Breakpoint: gdb should not stop!\n"); | |
1911 | return PRINT_NOTHING; | |
1912 | break; | |
1913 | ||
e514a9d6 | 1914 | case bp_catch_load: |
c906108c SS |
1915 | annotate_catchpoint (bs->breakpoint_at->number); |
1916 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
e514a9d6 JM |
1917 | printf_filtered ("loaded"); |
1918 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
1919 | return PRINT_SRC_AND_LOC; | |
1920 | break; | |
1921 | ||
1922 | case bp_catch_unload: | |
1923 | annotate_catchpoint (bs->breakpoint_at->number); | |
1924 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
1925 | printf_filtered ("unloaded"); | |
1926 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
1927 | return PRINT_SRC_AND_LOC; | |
1928 | break; | |
1929 | ||
1930 | case bp_catch_fork: | |
1931 | annotate_catchpoint (bs->breakpoint_at->number); | |
1932 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
1933 | printf_filtered ("forked"); | |
53a5351d JM |
1934 | printf_filtered (" process %d), ", |
1935 | bs->breakpoint_at->forked_inferior_pid); | |
917317f4 | 1936 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
1937 | break; |
1938 | ||
1939 | case bp_catch_vfork: | |
1940 | annotate_catchpoint (bs->breakpoint_at->number); | |
1941 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
1942 | printf_filtered ("vforked"); | |
1943 | printf_filtered (" process %d), ", | |
1944 | bs->breakpoint_at->forked_inferior_pid); | |
1945 | return PRINT_SRC_AND_LOC; | |
1946 | break; | |
1947 | ||
1948 | case bp_catch_exec: | |
c906108c SS |
1949 | annotate_catchpoint (bs->breakpoint_at->number); |
1950 | printf_filtered ("\nCatchpoint %d (exec'd %s), ", | |
c5aa993b JM |
1951 | bs->breakpoint_at->number, |
1952 | bs->breakpoint_at->exec_pathname); | |
917317f4 | 1953 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
1954 | break; |
1955 | ||
1956 | case bp_catch_catch: | |
53a5351d JM |
1957 | if (current_exception_event && |
1958 | (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH)) | |
c5aa993b JM |
1959 | { |
1960 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
1961 | printf_filtered ("\nCatchpoint %d (exception caught), ", |
1962 | bs->breakpoint_at->number); | |
c5aa993b JM |
1963 | printf_filtered ("throw location "); |
1964 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
1965 | printf_filtered ("%s:%d", | |
1966 | CURRENT_EXCEPTION_THROW_FILE, | |
1967 | CURRENT_EXCEPTION_THROW_LINE); | |
1968 | else | |
1969 | printf_filtered ("unknown"); | |
1970 | ||
1971 | printf_filtered (", catch location "); | |
1972 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
1973 | printf_filtered ("%s:%d", | |
1974 | CURRENT_EXCEPTION_CATCH_FILE, | |
1975 | CURRENT_EXCEPTION_CATCH_LINE); | |
1976 | else | |
1977 | printf_filtered ("unknown"); | |
1978 | ||
1979 | printf_filtered ("\n"); | |
e514a9d6 JM |
1980 | /* don't bother to print location frame info */ |
1981 | return PRINT_SRC_ONLY; | |
c5aa993b | 1982 | } |
c906108c | 1983 | else |
c5aa993b | 1984 | { |
e514a9d6 JM |
1985 | /* really throw, some other bpstat will handle it */ |
1986 | return PRINT_UNKNOWN; | |
c5aa993b | 1987 | } |
e514a9d6 JM |
1988 | break; |
1989 | ||
1990 | case bp_catch_throw: | |
53a5351d JM |
1991 | if (current_exception_event && |
1992 | (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW)) | |
c5aa993b JM |
1993 | { |
1994 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
1995 | printf_filtered ("\nCatchpoint %d (exception thrown), ", |
1996 | bs->breakpoint_at->number); | |
c5aa993b JM |
1997 | printf_filtered ("throw location "); |
1998 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
1999 | printf_filtered ("%s:%d", | |
2000 | CURRENT_EXCEPTION_THROW_FILE, | |
2001 | CURRENT_EXCEPTION_THROW_LINE); | |
2002 | else | |
2003 | printf_filtered ("unknown"); | |
2004 | ||
2005 | printf_filtered (", catch location "); | |
2006 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
2007 | printf_filtered ("%s:%d", | |
2008 | CURRENT_EXCEPTION_CATCH_FILE, | |
2009 | CURRENT_EXCEPTION_CATCH_LINE); | |
2010 | else | |
2011 | printf_filtered ("unknown"); | |
2012 | ||
2013 | printf_filtered ("\n"); | |
e514a9d6 JM |
2014 | /* don't bother to print location frame info */ |
2015 | return PRINT_SRC_ONLY; | |
c5aa993b | 2016 | } |
c906108c | 2017 | else |
c5aa993b | 2018 | { |
e514a9d6 JM |
2019 | /* really catch, some other bpstat will handle it */ |
2020 | return PRINT_UNKNOWN; | |
c5aa993b | 2021 | } |
e514a9d6 | 2022 | break; |
c906108c | 2023 | |
e514a9d6 JM |
2024 | case bp_watchpoint: |
2025 | case bp_hardware_watchpoint: | |
2026 | if (bs->old_val != NULL) | |
2027 | { | |
2028 | annotate_watchpoint (bs->breakpoint_at->number); | |
8b93c638 | 2029 | #ifdef UI_OUT |
fb40c209 AC |
2030 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2031 | ui_out_field_string (uiout, "reason", "watchpoint-trigger"); | |
8b93c638 | 2032 | mention (bs->breakpoint_at); |
666547aa | 2033 | ui_out_tuple_begin (uiout, "value"); |
8b93c638 JM |
2034 | ui_out_text (uiout, "\nOld value = "); |
2035 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2036 | ui_out_field_stream (uiout, "old", stb); | |
2037 | ui_out_text (uiout, "\nNew value = "); | |
2038 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2039 | ui_out_field_stream (uiout, "new", stb); | |
666547aa | 2040 | ui_out_tuple_end (uiout); |
8b93c638 JM |
2041 | ui_out_text (uiout, "\n"); |
2042 | #else | |
e514a9d6 JM |
2043 | mention (bs->breakpoint_at); |
2044 | printf_filtered ("\nOld value = "); | |
2045 | value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default); | |
2046 | printf_filtered ("\nNew value = "); | |
2047 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, | |
2048 | Val_pretty_default); | |
2049 | printf_filtered ("\n"); | |
8b93c638 | 2050 | #endif |
e514a9d6 JM |
2051 | value_free (bs->old_val); |
2052 | bs->old_val = NULL; | |
2053 | } | |
2054 | /* More than one watchpoint may have been triggered. */ | |
2055 | return PRINT_UNKNOWN; | |
2056 | break; | |
2057 | ||
2058 | case bp_read_watchpoint: | |
8b93c638 | 2059 | #ifdef UI_OUT |
fb40c209 AC |
2060 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2061 | ui_out_field_string (uiout, "reason", "read-watchpoint-trigger"); | |
8b93c638 | 2062 | mention (bs->breakpoint_at); |
666547aa | 2063 | ui_out_tuple_begin (uiout, "value"); |
8b93c638 JM |
2064 | ui_out_text (uiout, "\nValue = "); |
2065 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2066 | ui_out_field_stream (uiout, "value", stb); | |
666547aa | 2067 | ui_out_tuple_end (uiout); |
8b93c638 JM |
2068 | ui_out_text (uiout, "\n"); |
2069 | #else | |
c906108c | 2070 | mention (bs->breakpoint_at); |
e514a9d6 | 2071 | printf_filtered ("\nValue = "); |
c906108c SS |
2072 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, |
2073 | Val_pretty_default); | |
2074 | printf_filtered ("\n"); | |
8b93c638 | 2075 | #endif |
917317f4 | 2076 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2077 | break; |
2078 | ||
2079 | case bp_access_watchpoint: | |
8b93c638 JM |
2080 | #ifdef UI_OUT |
2081 | if (bs->old_val != NULL) | |
2082 | { | |
2083 | annotate_watchpoint (bs->breakpoint_at->number); | |
fb40c209 AC |
2084 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2085 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); | |
8b93c638 | 2086 | mention (bs->breakpoint_at); |
666547aa | 2087 | ui_out_tuple_begin (uiout, "value"); |
8b93c638 JM |
2088 | ui_out_text (uiout, "\nOld value = "); |
2089 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2090 | ui_out_field_stream (uiout, "old", stb); | |
2091 | value_free (bs->old_val); | |
2092 | bs->old_val = NULL; | |
2093 | ui_out_text (uiout, "\nNew value = "); | |
2094 | } | |
2095 | else | |
2096 | { | |
2097 | mention (bs->breakpoint_at); | |
fb40c209 | 2098 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
c97fe386 | 2099 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
666547aa | 2100 | ui_out_tuple_begin (uiout, "value"); |
8b93c638 JM |
2101 | ui_out_text (uiout, "\nValue = "); |
2102 | } | |
2103 | value_print (bs->breakpoint_at->val, stb->stream, 0,Val_pretty_default); | |
2104 | ui_out_field_stream (uiout, "new", stb); | |
666547aa | 2105 | ui_out_tuple_end (uiout); |
8b93c638 JM |
2106 | ui_out_text (uiout, "\n"); |
2107 | #else | |
e514a9d6 JM |
2108 | if (bs->old_val != NULL) |
2109 | { | |
2110 | annotate_watchpoint (bs->breakpoint_at->number); | |
2111 | mention (bs->breakpoint_at); | |
2112 | printf_filtered ("\nOld value = "); | |
2113 | value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default); | |
2114 | value_free (bs->old_val); | |
2115 | bs->old_val = NULL; | |
2116 | printf_filtered ("\nNew value = "); | |
2117 | } | |
2118 | else | |
2119 | { | |
2120 | mention (bs->breakpoint_at); | |
2121 | printf_filtered ("\nValue = "); | |
2122 | } | |
c906108c | 2123 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, |
c5aa993b | 2124 | Val_pretty_default); |
c906108c | 2125 | printf_filtered ("\n"); |
8b93c638 | 2126 | #endif |
917317f4 | 2127 | return PRINT_UNKNOWN; |
e514a9d6 | 2128 | break; |
4ce44c66 | 2129 | |
e514a9d6 JM |
2130 | /* Fall through, we don't deal with these types of breakpoints |
2131 | here. */ | |
2132 | ||
11cf8741 | 2133 | case bp_finish: |
fb40c209 AC |
2134 | #ifdef UI_OUT |
2135 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
2136 | ui_out_field_string (uiout, "reason", "function-finished"); | |
2137 | #endif | |
8b93c638 JM |
2138 | return PRINT_UNKNOWN; |
2139 | break; | |
2140 | ||
e514a9d6 | 2141 | case bp_until: |
fb40c209 AC |
2142 | #ifdef UI_OUT |
2143 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
2144 | ui_out_field_string (uiout, "reason", "location-reached"); | |
2145 | #endif | |
8b93c638 JM |
2146 | return PRINT_UNKNOWN; |
2147 | break; | |
2148 | ||
c2d11a7d | 2149 | case bp_none: |
e514a9d6 JM |
2150 | case bp_longjmp: |
2151 | case bp_longjmp_resume: | |
2152 | case bp_step_resume: | |
2153 | case bp_through_sigtramp: | |
2154 | case bp_watchpoint_scope: | |
2155 | case bp_call_dummy: | |
2156 | default: | |
2157 | return PRINT_UNKNOWN; | |
2158 | } | |
2159 | } | |
2160 | ||
2161 | /* Generic routine for printing messages indicating why we | |
2162 | stopped. The behavior of this function depends on the value | |
2163 | 'print_it' in the bpstat structure. Under some circumstances we | |
2164 | may decide not to print anything here and delegate the task to | |
2165 | normal_stop(). */ | |
2166 | ||
2167 | static enum print_stop_action | |
2168 | print_bp_stop_message (bpstat bs) | |
2169 | { | |
2170 | switch (bs->print_it) | |
2171 | { | |
2172 | case print_it_noop: | |
2173 | /* Nothing should be printed for this bpstat entry. */ | |
2174 | return PRINT_UNKNOWN; | |
2175 | break; | |
2176 | ||
2177 | case print_it_done: | |
2178 | /* We still want to print the frame, but we already printed the | |
2179 | relevant messages. */ | |
2180 | return PRINT_SRC_AND_LOC; | |
2181 | break; | |
2182 | ||
2183 | case print_it_normal: | |
2184 | /* Normal case, we handle everything in print_it_typical. */ | |
2185 | return print_it_typical (bs); | |
2186 | break; | |
2187 | default: | |
8e65ff28 AC |
2188 | internal_error (__FILE__, __LINE__, |
2189 | "print_bp_stop_message: unrecognized enum value"); | |
e514a9d6 | 2190 | break; |
c906108c | 2191 | } |
c906108c SS |
2192 | } |
2193 | ||
e514a9d6 JM |
2194 | /* Print a message indicating what happened. This is called from |
2195 | normal_stop(). The input to this routine is the head of the bpstat | |
2196 | list - a list of the eventpoints that caused this stop. This | |
2197 | routine calls the generic print routine for printing a message | |
2198 | about reasons for stopping. This will print (for example) the | |
2199 | "Breakpoint n," part of the output. The return value of this | |
2200 | routine is one of: | |
c906108c | 2201 | |
917317f4 JM |
2202 | PRINT_UNKNOWN: Means we printed nothing |
2203 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2204 | code to print the location. An example is |
2205 | "Breakpoint 1, " which should be followed by | |
2206 | the location. | |
917317f4 | 2207 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2208 | to also print the location part of the message. |
2209 | An example is the catch/throw messages, which | |
917317f4 JM |
2210 | don't require a location appended to the end. |
2211 | PRINT_NOTHING: We have done some printing and we don't need any | |
2212 | further info to be printed.*/ | |
c906108c | 2213 | |
917317f4 | 2214 | enum print_stop_action |
fba45db2 | 2215 | bpstat_print (bpstat bs) |
c906108c SS |
2216 | { |
2217 | int val; | |
c5aa993b | 2218 | |
c906108c | 2219 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2220 | (Currently all watchpoints go on the bpstat whether hit or not. |
2221 | That probably could (should) be changed, provided care is taken | |
c906108c | 2222 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2223 | for (; bs; bs = bs->next) |
2224 | { | |
2225 | val = print_bp_stop_message (bs); | |
2226 | if (val == PRINT_SRC_ONLY | |
2227 | || val == PRINT_SRC_AND_LOC | |
2228 | || val == PRINT_NOTHING) | |
2229 | return val; | |
2230 | } | |
c906108c | 2231 | |
e514a9d6 JM |
2232 | /* We reached the end of the chain, or we got a null BS to start |
2233 | with and nothing was printed. */ | |
917317f4 | 2234 | return PRINT_UNKNOWN; |
c906108c SS |
2235 | } |
2236 | ||
2237 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2238 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2239 | The argument is a "struct expression *" that has been cast to char * to | |
2240 | make it pass through catch_errors. */ | |
2241 | ||
2242 | static int | |
fba45db2 | 2243 | breakpoint_cond_eval (PTR exp) |
c906108c SS |
2244 | { |
2245 | value_ptr mark = value_mark (); | |
c5aa993b | 2246 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2247 | value_free_to_mark (mark); |
2248 | return i; | |
2249 | } | |
2250 | ||
2251 | /* Allocate a new bpstat and chain it to the current one. */ | |
2252 | ||
2253 | static bpstat | |
831662b3 | 2254 | bpstat_alloc (struct breakpoint *b, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2255 | { |
2256 | bpstat bs; | |
2257 | ||
2258 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2259 | cbs->next = bs; | |
2260 | bs->breakpoint_at = b; | |
2261 | /* If the condition is false, etc., don't do the commands. */ | |
2262 | bs->commands = NULL; | |
2263 | bs->old_val = NULL; | |
2264 | bs->print_it = print_it_normal; | |
2265 | return bs; | |
2266 | } | |
2267 | \f | |
2268 | /* Possible return values for watchpoint_check (this can't be an enum | |
2269 | because of check_errors). */ | |
2270 | /* The watchpoint has been deleted. */ | |
2271 | #define WP_DELETED 1 | |
2272 | /* The value has changed. */ | |
2273 | #define WP_VALUE_CHANGED 2 | |
2274 | /* The value has not changed. */ | |
2275 | #define WP_VALUE_NOT_CHANGED 3 | |
2276 | ||
2277 | #define BP_TEMPFLAG 1 | |
2278 | #define BP_HARDWAREFLAG 2 | |
2279 | ||
2280 | /* Check watchpoint condition. */ | |
2281 | ||
2282 | static int | |
fba45db2 | 2283 | watchpoint_check (PTR p) |
c906108c SS |
2284 | { |
2285 | bpstat bs = (bpstat) p; | |
2286 | struct breakpoint *b; | |
2287 | struct frame_info *fr; | |
2288 | int within_current_scope; | |
2289 | ||
2290 | b = bs->breakpoint_at; | |
2291 | ||
2292 | if (b->exp_valid_block == NULL) | |
2293 | within_current_scope = 1; | |
2294 | else | |
2295 | { | |
2296 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2297 | any chance of handling watchpoints on local variables, we'll need |
2298 | the frame chain (so we can determine if we're in scope). */ | |
2299 | reinit_frame_cache (); | |
c906108c SS |
2300 | fr = find_frame_addr_in_frame_chain (b->watchpoint_frame); |
2301 | within_current_scope = (fr != NULL); | |
2302 | if (within_current_scope) | |
2303 | /* If we end up stopping, the current frame will get selected | |
2304 | in normal_stop. So this call to select_frame won't affect | |
2305 | the user. */ | |
2306 | select_frame (fr, -1); | |
2307 | } | |
c5aa993b | 2308 | |
c906108c SS |
2309 | if (within_current_scope) |
2310 | { | |
2311 | /* We use value_{,free_to_}mark because it could be a | |
2312 | *long* time before we return to the command level and | |
c5aa993b JM |
2313 | call free_all_values. We can't call free_all_values because |
2314 | we might be in the middle of evaluating a function call. */ | |
c906108c SS |
2315 | |
2316 | value_ptr mark = value_mark (); | |
2317 | value_ptr new_val = evaluate_expression (bs->breakpoint_at->exp); | |
2318 | if (!value_equal (b->val, new_val)) | |
2319 | { | |
2320 | release_value (new_val); | |
2321 | value_free_to_mark (mark); | |
2322 | bs->old_val = b->val; | |
2323 | b->val = new_val; | |
2324 | /* We will stop here */ | |
2325 | return WP_VALUE_CHANGED; | |
2326 | } | |
2327 | else | |
2328 | { | |
2329 | /* Nothing changed, don't do anything. */ | |
2330 | value_free_to_mark (mark); | |
2331 | /* We won't stop here */ | |
2332 | return WP_VALUE_NOT_CHANGED; | |
2333 | } | |
2334 | } | |
2335 | else | |
2336 | { | |
2337 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2338 | if we temporarily ignored the watchpoint, then when |
2339 | we reenter the block in which it is valid it contains | |
2340 | garbage (in the case of a function, it may have two | |
2341 | garbage values, one before and one after the prologue). | |
2342 | So we can't even detect the first assignment to it and | |
2343 | watch after that (since the garbage may or may not equal | |
2344 | the first value assigned). */ | |
4ce44c66 JM |
2345 | /* We print all the stop information in print_it_typical(), but |
2346 | in this case, by the time we call print_it_typical() this bp | |
2347 | will be deleted already. So we have no choice but print the | |
2348 | information here. */ | |
8b93c638 | 2349 | #ifdef UI_OUT |
fb40c209 AC |
2350 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2351 | ui_out_field_string (uiout, "reason", "watchpoint-scope"); | |
8b93c638 JM |
2352 | ui_out_text (uiout, "\nWatchpoint "); |
2353 | ui_out_field_int (uiout, "wpnum", bs->breakpoint_at->number); | |
2354 | ui_out_text (uiout, " deleted because the program has left the block in\n\ | |
2355 | which its expression is valid.\n"); | |
2356 | #else | |
c906108c SS |
2357 | printf_filtered ("\ |
2358 | Watchpoint %d deleted because the program has left the block in\n\ | |
2359 | which its expression is valid.\n", bs->breakpoint_at->number); | |
8b93c638 | 2360 | #endif |
4ce44c66 | 2361 | |
c906108c SS |
2362 | if (b->related_breakpoint) |
2363 | b->related_breakpoint->disposition = del_at_next_stop; | |
2364 | b->disposition = del_at_next_stop; | |
2365 | ||
2366 | return WP_DELETED; | |
2367 | } | |
2368 | } | |
2369 | ||
c906108c SS |
2370 | /* Get a bpstat associated with having just stopped at address *PC |
2371 | and frame address CORE_ADDRESS. Update *PC to point at the | |
2372 | breakpoint (if we hit a breakpoint). NOT_A_BREAKPOINT is nonzero | |
2373 | if this is known to not be a real breakpoint (it could still be a | |
2374 | watchpoint, though). */ | |
2375 | ||
2376 | /* Determine whether we stopped at a breakpoint, etc, or whether we | |
2377 | don't understand this stop. Result is a chain of bpstat's such that: | |
2378 | ||
c5aa993b | 2379 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2380 | |
c5aa993b | 2381 | if we understand why we stopped, the result is not null. |
c906108c | 2382 | |
c5aa993b JM |
2383 | Each element of the chain refers to a particular breakpoint or |
2384 | watchpoint at which we have stopped. (We may have stopped for | |
2385 | several reasons concurrently.) | |
c906108c | 2386 | |
c5aa993b JM |
2387 | Each element of the chain has valid next, breakpoint_at, |
2388 | commands, FIXME??? fields. */ | |
c906108c SS |
2389 | |
2390 | bpstat | |
fba45db2 | 2391 | bpstat_stop_status (CORE_ADDR *pc, int not_a_breakpoint) |
c906108c SS |
2392 | { |
2393 | register struct breakpoint *b, *temp; | |
2394 | CORE_ADDR bp_addr; | |
2395 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ | |
2396 | int real_breakpoint = 0; | |
2397 | /* Root of the chain of bpstat's */ | |
2398 | struct bpstats root_bs[1]; | |
2399 | /* Pointer to the last thing in the chain currently. */ | |
2400 | bpstat bs = root_bs; | |
2401 | static char message1[] = | |
c5aa993b JM |
2402 | "Error evaluating expression for watchpoint %d\n"; |
2403 | char message[sizeof (message1) + 30 /* slop */ ]; | |
c906108c SS |
2404 | |
2405 | /* Get the address where the breakpoint would have been. */ | |
b0ed3589 | 2406 | bp_addr = *pc - (not_a_breakpoint && !SOFTWARE_SINGLE_STEP_P () ? |
6426a772 | 2407 | 0 : DECR_PC_AFTER_BREAK); |
c906108c SS |
2408 | |
2409 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
2410 | { |
2411 | if (b->enable == disabled | |
2412 | || b->enable == shlib_disabled | |
2413 | || b->enable == call_disabled) | |
2414 | continue; | |
2415 | ||
2416 | if (b->type != bp_watchpoint | |
2417 | && b->type != bp_hardware_watchpoint | |
2418 | && b->type != bp_read_watchpoint | |
2419 | && b->type != bp_access_watchpoint | |
2420 | && b->type != bp_hardware_breakpoint | |
2421 | && b->type != bp_catch_fork | |
2422 | && b->type != bp_catch_vfork | |
2423 | && b->type != bp_catch_exec | |
2424 | && b->type != bp_catch_catch | |
2425 | && b->type != bp_catch_throw) /* a non-watchpoint bp */ | |
2426 | if (b->address != bp_addr || /* address doesn't match or */ | |
2427 | (overlay_debugging && /* overlay doesn't match */ | |
2428 | section_is_overlay (b->section) && | |
2429 | !section_is_mapped (b->section))) | |
c906108c SS |
2430 | continue; |
2431 | ||
c5aa993b JM |
2432 | if (b->type == bp_hardware_breakpoint |
2433 | && b->address != (*pc - DECR_PC_AFTER_HW_BREAK)) | |
2434 | continue; | |
2435 | ||
c5aa993b JM |
2436 | /* Is this a catchpoint of a load or unload? If so, did we |
2437 | get a load or unload of the specified library? If not, | |
2438 | ignore it. */ | |
2439 | if ((b->type == bp_catch_load) | |
c906108c | 2440 | #if defined(SOLIB_HAVE_LOAD_EVENT) |
39f77062 | 2441 | && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2442 | || ((b->dll_pathname != NULL) |
53a5351d | 2443 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2444 | SOLIB_LOADED_LIBRARY_PATHNAME ( |
2445 | PIDGET (inferior_ptid))) | |
53a5351d | 2446 | != 0))) |
c906108c | 2447 | #endif |
c5aa993b JM |
2448 | ) |
2449 | continue; | |
2450 | ||
2451 | if ((b->type == bp_catch_unload) | |
c906108c | 2452 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) |
39f77062 | 2453 | && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid)) |
c5aa993b | 2454 | || ((b->dll_pathname != NULL) |
53a5351d | 2455 | && (strcmp (b->dll_pathname, |
39f77062 KB |
2456 | SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
2457 | PIDGET (inferior_ptid))) | |
53a5351d | 2458 | != 0))) |
c906108c | 2459 | #endif |
c5aa993b JM |
2460 | ) |
2461 | continue; | |
c906108c | 2462 | |
c5aa993b | 2463 | if ((b->type == bp_catch_fork) |
39f77062 KB |
2464 | && !target_has_forked (PIDGET (inferior_ptid), |
2465 | &b->forked_inferior_pid)) | |
c5aa993b | 2466 | continue; |
c906108c | 2467 | |
c5aa993b | 2468 | if ((b->type == bp_catch_vfork) |
39f77062 KB |
2469 | && !target_has_vforked (PIDGET (inferior_ptid), |
2470 | &b->forked_inferior_pid)) | |
c5aa993b | 2471 | continue; |
c906108c | 2472 | |
c5aa993b | 2473 | if ((b->type == bp_catch_exec) |
39f77062 | 2474 | && !target_has_execd (PIDGET (inferior_ptid), &b->exec_pathname)) |
c5aa993b | 2475 | continue; |
c906108c | 2476 | |
c5aa993b JM |
2477 | if (ep_is_exception_catchpoint (b) && |
2478 | !(current_exception_event = target_get_current_exception_event ())) | |
2479 | continue; | |
c906108c | 2480 | |
c5aa993b JM |
2481 | /* Come here if it's a watchpoint, or if the break address matches */ |
2482 | ||
2483 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ | |
2484 | ||
2485 | /* Watchpoints may change this, if not found to have triggered. */ | |
2486 | bs->stop = 1; | |
2487 | bs->print = 1; | |
2488 | ||
2489 | sprintf (message, message1, b->number); | |
53a5351d JM |
2490 | if (b->type == bp_watchpoint || |
2491 | b->type == bp_hardware_watchpoint) | |
c5aa993b | 2492 | { |
53a5351d JM |
2493 | switch (catch_errors (watchpoint_check, bs, message, |
2494 | RETURN_MASK_ALL)) | |
c5aa993b JM |
2495 | { |
2496 | case WP_DELETED: | |
2497 | /* We've already printed what needs to be printed. */ | |
4ce44c66 JM |
2498 | /* Actually this is superfluous, because by the time we |
2499 | call print_it_typical() the wp will be already deleted, | |
2500 | and the function will return immediately. */ | |
c5aa993b JM |
2501 | bs->print_it = print_it_done; |
2502 | /* Stop. */ | |
2503 | break; | |
2504 | case WP_VALUE_CHANGED: | |
2505 | /* Stop. */ | |
2506 | ++(b->hit_count); | |
2507 | break; | |
2508 | case WP_VALUE_NOT_CHANGED: | |
2509 | /* Don't stop. */ | |
2510 | bs->print_it = print_it_noop; | |
2511 | bs->stop = 0; | |
c5aa993b JM |
2512 | continue; |
2513 | default: | |
2514 | /* Can't happen. */ | |
2515 | /* FALLTHROUGH */ | |
2516 | case 0: | |
2517 | /* Error from catch_errors. */ | |
2518 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2519 | if (b->related_breakpoint) | |
2520 | b->related_breakpoint->disposition = del_at_next_stop; | |
2521 | b->disposition = del_at_next_stop; | |
2522 | /* We've already printed what needs to be printed. */ | |
2523 | bs->print_it = print_it_done; | |
2524 | ||
2525 | /* Stop. */ | |
2526 | break; | |
2527 | } | |
2528 | } | |
53a5351d JM |
2529 | else if (b->type == bp_read_watchpoint || |
2530 | b->type == bp_access_watchpoint) | |
c5aa993b JM |
2531 | { |
2532 | CORE_ADDR addr; | |
2533 | value_ptr v; | |
2534 | int found = 0; | |
2535 | ||
2536 | addr = target_stopped_data_address (); | |
2537 | if (addr == 0) | |
2538 | continue; | |
2539 | for (v = b->val_chain; v; v = v->next) | |
2540 | { | |
5c44784c JM |
2541 | if (VALUE_LVAL (v) == lval_memory |
2542 | && ! VALUE_LAZY (v)) | |
c5aa993b | 2543 | { |
2e70b7b9 MS |
2544 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
2545 | ||
2546 | if (v == b->val_chain | |
2547 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
2548 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
2549 | { | |
2550 | CORE_ADDR vaddr; | |
2551 | ||
2552 | vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
2553 | /* Exact match not required. Within range is | |
2554 | sufficient. */ | |
2555 | if (addr >= vaddr && | |
2556 | addr < vaddr + TYPE_LENGTH (VALUE_TYPE (v))) | |
2557 | found = 1; | |
2558 | } | |
c5aa993b JM |
2559 | } |
2560 | } | |
2561 | if (found) | |
53a5351d JM |
2562 | switch (catch_errors (watchpoint_check, bs, message, |
2563 | RETURN_MASK_ALL)) | |
c906108c SS |
2564 | { |
2565 | case WP_DELETED: | |
2566 | /* We've already printed what needs to be printed. */ | |
2567 | bs->print_it = print_it_done; | |
2568 | /* Stop. */ | |
2569 | break; | |
2570 | case WP_VALUE_CHANGED: | |
99e5c1c8 MS |
2571 | if (b->type == bp_read_watchpoint) |
2572 | { | |
2573 | /* Don't stop: read watchpoints shouldn't fire if | |
2574 | the value has changed. This is for targets which | |
2575 | cannot set read-only watchpoints. */ | |
2576 | bs->print_it = print_it_noop; | |
2577 | bs->stop = 0; | |
2578 | continue; | |
2579 | } | |
2580 | ++(b->hit_count); | |
2581 | break; | |
c5aa993b | 2582 | case WP_VALUE_NOT_CHANGED: |
c906108c SS |
2583 | /* Stop. */ |
2584 | ++(b->hit_count); | |
2585 | break; | |
c906108c SS |
2586 | default: |
2587 | /* Can't happen. */ | |
c906108c SS |
2588 | case 0: |
2589 | /* Error from catch_errors. */ | |
2590 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2591 | if (b->related_breakpoint) | |
2592 | b->related_breakpoint->disposition = del_at_next_stop; | |
2593 | b->disposition = del_at_next_stop; | |
2594 | /* We've already printed what needs to be printed. */ | |
2595 | bs->print_it = print_it_done; | |
c906108c SS |
2596 | break; |
2597 | } | |
53a5351d JM |
2598 | else /* found == 0 */ |
2599 | { | |
2600 | /* This is a case where some watchpoint(s) triggered, | |
2601 | but not at the address of this watchpoint (FOUND | |
2602 | was left zero). So don't print anything for this | |
2603 | watchpoint. */ | |
2604 | bs->print_it = print_it_noop; | |
2605 | bs->stop = 0; | |
2606 | continue; | |
2607 | } | |
c5aa993b JM |
2608 | } |
2609 | else | |
2610 | { | |
2611 | /* By definition, an encountered breakpoint is a triggered | |
2612 | breakpoint. */ | |
2613 | ++(b->hit_count); | |
c906108c | 2614 | |
c5aa993b JM |
2615 | real_breakpoint = 1; |
2616 | } | |
2617 | ||
ed9a39eb JM |
2618 | if (b->frame && |
2619 | b->frame != (get_current_frame ())->frame) | |
c5aa993b JM |
2620 | bs->stop = 0; |
2621 | else | |
2622 | { | |
2623 | int value_is_zero = 0; | |
2624 | ||
2625 | if (b->cond) | |
2626 | { | |
2627 | /* Need to select the frame, with all that implies | |
2628 | so that the conditions will have the right context. */ | |
2629 | select_frame (get_current_frame (), 0); | |
2630 | value_is_zero | |
2631 | = catch_errors (breakpoint_cond_eval, (b->cond), | |
2632 | "Error in testing breakpoint condition:\n", | |
2633 | RETURN_MASK_ALL); | |
2634 | /* FIXME-someday, should give breakpoint # */ | |
2635 | free_all_values (); | |
2636 | } | |
2637 | if (b->cond && value_is_zero) | |
2638 | { | |
2639 | bs->stop = 0; | |
2640 | /* Don't consider this a hit. */ | |
2641 | --(b->hit_count); | |
2642 | } | |
2643 | else if (b->ignore_count > 0) | |
2644 | { | |
2645 | b->ignore_count--; | |
5c44784c | 2646 | annotate_ignore_count_change (); |
c5aa993b JM |
2647 | bs->stop = 0; |
2648 | } | |
2649 | else | |
2650 | { | |
2651 | /* We will stop here */ | |
2652 | if (b->disposition == disable) | |
2653 | b->enable = disabled; | |
2654 | bs->commands = b->commands; | |
2655 | if (b->silent) | |
2656 | bs->print = 0; | |
2657 | if (bs->commands && | |
2658 | (STREQ ("silent", bs->commands->line) || | |
2659 | (xdb_commands && STREQ ("Q", bs->commands->line)))) | |
2660 | { | |
2661 | bs->commands = bs->commands->next; | |
c906108c | 2662 | bs->print = 0; |
c5aa993b JM |
2663 | } |
2664 | } | |
2665 | } | |
2666 | /* Print nothing for this entry if we dont stop or if we dont print. */ | |
2667 | if (bs->stop == 0 || bs->print == 0) | |
2668 | bs->print_it = print_it_noop; | |
2669 | } | |
c906108c SS |
2670 | |
2671 | bs->next = NULL; /* Terminate the chain */ | |
2672 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
2673 | ||
2674 | if (real_breakpoint && bs) | |
2675 | { | |
c5aa993b | 2676 | if (bs->breakpoint_at->type == bp_hardware_breakpoint) |
c906108c | 2677 | { |
c5aa993b | 2678 | if (DECR_PC_AFTER_HW_BREAK != 0) |
c906108c SS |
2679 | { |
2680 | *pc = *pc - DECR_PC_AFTER_HW_BREAK; | |
2681 | write_pc (*pc); | |
2682 | } | |
2683 | } | |
2684 | else | |
2685 | { | |
2686 | if (DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs) | |
2687 | { | |
2688 | *pc = bp_addr; | |
2689 | #if defined (SHIFT_INST_REGS) | |
c5aa993b | 2690 | SHIFT_INST_REGS (); |
c906108c SS |
2691 | #else /* No SHIFT_INST_REGS. */ |
2692 | write_pc (bp_addr); | |
2693 | #endif /* No SHIFT_INST_REGS. */ | |
2694 | } | |
2695 | } | |
2696 | } | |
2697 | ||
2698 | /* The value of a hardware watchpoint hasn't changed, but the | |
2699 | intermediate memory locations we are watching may have. */ | |
c5aa993b | 2700 | if (bs && !bs->stop && |
c906108c SS |
2701 | (bs->breakpoint_at->type == bp_hardware_watchpoint || |
2702 | bs->breakpoint_at->type == bp_read_watchpoint || | |
2703 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
2704 | { | |
2705 | remove_breakpoints (); | |
2706 | insert_breakpoints (); | |
2707 | } | |
2708 | return bs; | |
2709 | } | |
2710 | \f | |
2711 | /* Tell what to do about this bpstat. */ | |
2712 | struct bpstat_what | |
fba45db2 | 2713 | bpstat_what (bpstat bs) |
c906108c SS |
2714 | { |
2715 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
2716 | enum class |
2717 | { | |
2718 | /* This bpstat element has no effect on the main_action. */ | |
2719 | no_effect = 0, | |
2720 | ||
2721 | /* There was a watchpoint, stop but don't print. */ | |
2722 | wp_silent, | |
c906108c | 2723 | |
c5aa993b JM |
2724 | /* There was a watchpoint, stop and print. */ |
2725 | wp_noisy, | |
c906108c | 2726 | |
c5aa993b JM |
2727 | /* There was a breakpoint but we're not stopping. */ |
2728 | bp_nostop, | |
c906108c | 2729 | |
c5aa993b JM |
2730 | /* There was a breakpoint, stop but don't print. */ |
2731 | bp_silent, | |
c906108c | 2732 | |
c5aa993b JM |
2733 | /* There was a breakpoint, stop and print. */ |
2734 | bp_noisy, | |
c906108c | 2735 | |
c5aa993b JM |
2736 | /* We hit the longjmp breakpoint. */ |
2737 | long_jump, | |
c906108c | 2738 | |
c5aa993b JM |
2739 | /* We hit the longjmp_resume breakpoint. */ |
2740 | long_resume, | |
c906108c | 2741 | |
c5aa993b JM |
2742 | /* We hit the step_resume breakpoint. */ |
2743 | step_resume, | |
c906108c | 2744 | |
c5aa993b JM |
2745 | /* We hit the through_sigtramp breakpoint. */ |
2746 | through_sig, | |
c906108c | 2747 | |
c5aa993b JM |
2748 | /* We hit the shared library event breakpoint. */ |
2749 | shlib_event, | |
c906108c | 2750 | |
c5aa993b JM |
2751 | /* We caught a shared library event. */ |
2752 | catch_shlib_event, | |
c906108c | 2753 | |
c5aa993b JM |
2754 | /* This is just used to count how many enums there are. */ |
2755 | class_last | |
c906108c SS |
2756 | }; |
2757 | ||
2758 | /* Here is the table which drives this routine. So that we can | |
2759 | format it pretty, we define some abbreviations for the | |
2760 | enum bpstat_what codes. */ | |
2761 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
2762 | #define ss BPSTAT_WHAT_STOP_SILENT | |
2763 | #define sn BPSTAT_WHAT_STOP_NOISY | |
2764 | #define sgl BPSTAT_WHAT_SINGLE | |
2765 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
2766 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
2767 | #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
2768 | #define sr BPSTAT_WHAT_STEP_RESUME | |
2769 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP | |
2770 | #define shl BPSTAT_WHAT_CHECK_SHLIBS | |
2771 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
2772 | ||
2773 | /* "Can't happen." Might want to print an error message. | |
2774 | abort() is not out of the question, but chances are GDB is just | |
2775 | a bit confused, not unusable. */ | |
2776 | #define err BPSTAT_WHAT_STOP_NOISY | |
2777 | ||
2778 | /* Given an old action and a class, come up with a new action. */ | |
2779 | /* One interesting property of this table is that wp_silent is the same | |
2780 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
2781 | after stopping, the check for whether to step over a breakpoint | |
2782 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
2783 | reference to how we stopped. We retain separate wp_silent and |
2784 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
2785 | |
2786 | Another possibly interesting property of this table is that | |
2787 | there's a partial ordering, priority-like, of the actions. Once | |
2788 | you've decided that some action is appropriate, you'll never go | |
2789 | back and decide something of a lower priority is better. The | |
2790 | ordering is: | |
2791 | ||
7e73cedf | 2792 | kc < clr sgl shl shlr slr sn sr ss ts |
c5aa993b JM |
2793 | sgl < clrs shl shlr slr sn sr ss ts |
2794 | slr < err shl shlr sn sr ss ts | |
2795 | clr < clrs err shl shlr sn sr ss ts | |
2796 | clrs < err shl shlr sn sr ss ts | |
2797 | ss < shl shlr sn sr ts | |
2798 | sn < shl shlr sr ts | |
2799 | sr < shl shlr ts | |
2800 | shl < shlr | |
2801 | ts < | |
2802 | shlr < | |
2803 | ||
43ff13b4 JM |
2804 | What I think this means is that we don't need a damned table |
2805 | here. If you just put the rows and columns in the right order, | |
2806 | it'd look awfully regular. We could simply walk the bpstat list | |
2807 | and choose the highest priority action we find, with a little | |
2808 | logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/ | |
2809 | CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says | |
2810 | is messy anyway). */ | |
c906108c SS |
2811 | |
2812 | /* step_resume entries: a step resume breakpoint overrides another | |
2813 | breakpoint of signal handling (see comment in wait_for_inferior | |
2814 | at first IN_SIGTRAMP where we set the step_resume breakpoint). */ | |
2815 | /* We handle the through_sigtramp_breakpoint the same way; having both | |
2816 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
2817 | ||
2818 | static const enum bpstat_what_main_action | |
c5aa993b JM |
2819 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
2820 | { | |
2821 | /* old action */ | |
2822 | /* kc ss sn sgl slr clr clrs sr ts shl shlr | |
2823 | */ | |
2824 | /*no_effect */ | |
2825 | {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl, shlr}, | |
2826 | /*wp_silent */ | |
2827 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
2828 | /*wp_noisy */ | |
2829 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
2830 | /*bp_nostop */ | |
2831 | {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl, shlr}, | |
2832 | /*bp_silent */ | |
2833 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
2834 | /*bp_noisy */ | |
2835 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
2836 | /*long_jump */ | |
a48bb0b3 | 2837 | {slr, ss, sn, slr, slr, err, err, sr, ts, shl, shlr}, |
c5aa993b JM |
2838 | /*long_resume */ |
2839 | {clr, ss, sn, clrs, err, err, err, sr, ts, shl, shlr}, | |
2840 | /*step_resume */ | |
2841 | {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl, shlr}, | |
2842 | /*through_sig */ | |
2843 | {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl, shlr}, | |
2844 | /*shlib */ | |
2845 | {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl, shlr}, | |
2846 | /*catch_shlib */ | |
2847 | {shlr, shlr, shlr, shlr, shlr, shlr, shlr, shlr, ts, shlr, shlr} | |
2848 | }; | |
c906108c SS |
2849 | |
2850 | #undef kc | |
2851 | #undef ss | |
2852 | #undef sn | |
2853 | #undef sgl | |
2854 | #undef slr | |
2855 | #undef clr | |
2856 | #undef clrs | |
2857 | #undef err | |
2858 | #undef sr | |
2859 | #undef ts | |
2860 | #undef shl | |
2861 | #undef shlr | |
2862 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
2863 | struct bpstat_what retval; | |
2864 | ||
2865 | retval.call_dummy = 0; | |
2866 | for (; bs != NULL; bs = bs->next) | |
2867 | { | |
2868 | enum class bs_class = no_effect; | |
2869 | if (bs->breakpoint_at == NULL) | |
2870 | /* I suspect this can happen if it was a momentary breakpoint | |
2871 | which has since been deleted. */ | |
2872 | continue; | |
2873 | switch (bs->breakpoint_at->type) | |
2874 | { | |
2875 | case bp_none: | |
2876 | continue; | |
2877 | ||
2878 | case bp_breakpoint: | |
2879 | case bp_hardware_breakpoint: | |
2880 | case bp_until: | |
2881 | case bp_finish: | |
2882 | if (bs->stop) | |
2883 | { | |
2884 | if (bs->print) | |
2885 | bs_class = bp_noisy; | |
2886 | else | |
2887 | bs_class = bp_silent; | |
2888 | } | |
2889 | else | |
2890 | bs_class = bp_nostop; | |
2891 | break; | |
2892 | case bp_watchpoint: | |
2893 | case bp_hardware_watchpoint: | |
2894 | case bp_read_watchpoint: | |
2895 | case bp_access_watchpoint: | |
2896 | if (bs->stop) | |
2897 | { | |
2898 | if (bs->print) | |
2899 | bs_class = wp_noisy; | |
2900 | else | |
2901 | bs_class = wp_silent; | |
2902 | } | |
2903 | else | |
53a5351d JM |
2904 | /* There was a watchpoint, but we're not stopping. |
2905 | This requires no further action. */ | |
c906108c SS |
2906 | bs_class = no_effect; |
2907 | break; | |
2908 | case bp_longjmp: | |
2909 | bs_class = long_jump; | |
2910 | break; | |
2911 | case bp_longjmp_resume: | |
2912 | bs_class = long_resume; | |
2913 | break; | |
2914 | case bp_step_resume: | |
2915 | if (bs->stop) | |
2916 | { | |
2917 | bs_class = step_resume; | |
2918 | } | |
2919 | else | |
2920 | /* It is for the wrong frame. */ | |
2921 | bs_class = bp_nostop; | |
2922 | break; | |
2923 | case bp_through_sigtramp: | |
2924 | bs_class = through_sig; | |
2925 | break; | |
2926 | case bp_watchpoint_scope: | |
2927 | bs_class = bp_nostop; | |
2928 | break; | |
c5aa993b JM |
2929 | case bp_shlib_event: |
2930 | bs_class = shlib_event; | |
2931 | break; | |
c4093a6a JM |
2932 | case bp_thread_event: |
2933 | bs_class = bp_nostop; | |
2934 | break; | |
c5aa993b JM |
2935 | case bp_catch_load: |
2936 | case bp_catch_unload: | |
2937 | /* Only if this catchpoint triggered should we cause the | |
2938 | step-out-of-dld behaviour. Otherwise, we ignore this | |
2939 | catchpoint. */ | |
2940 | if (bs->stop) | |
2941 | bs_class = catch_shlib_event; | |
2942 | else | |
2943 | bs_class = no_effect; | |
2944 | break; | |
2945 | case bp_catch_fork: | |
2946 | case bp_catch_vfork: | |
2947 | case bp_catch_exec: | |
2948 | if (bs->stop) | |
2949 | { | |
2950 | if (bs->print) | |
2951 | bs_class = bp_noisy; | |
2952 | else | |
2953 | bs_class = bp_silent; | |
2954 | } | |
2955 | else | |
53a5351d JM |
2956 | /* There was a catchpoint, but we're not stopping. |
2957 | This requires no further action. */ | |
c5aa993b JM |
2958 | bs_class = no_effect; |
2959 | break; | |
2960 | case bp_catch_catch: | |
2961 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_CATCH) | |
2962 | bs_class = bp_nostop; | |
2963 | else if (bs->stop) | |
2964 | bs_class = bs->print ? bp_noisy : bp_silent; | |
2965 | break; | |
2966 | case bp_catch_throw: | |
2967 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_THROW) | |
2968 | bs_class = bp_nostop; | |
2969 | else if (bs->stop) | |
2970 | bs_class = bs->print ? bp_noisy : bp_silent; | |
c906108c | 2971 | break; |
c906108c | 2972 | case bp_call_dummy: |
53a5351d JM |
2973 | /* Make sure the action is stop (silent or noisy), |
2974 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
2975 | bs_class = bp_silent; |
2976 | retval.call_dummy = 1; | |
2977 | break; | |
2978 | } | |
c5aa993b | 2979 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
2980 | } |
2981 | retval.main_action = current_action; | |
2982 | return retval; | |
2983 | } | |
2984 | ||
2985 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
2986 | without hardware support). This isn't related to a specific bpstat, | |
2987 | just to things like whether watchpoints are set. */ | |
2988 | ||
c5aa993b | 2989 | int |
fba45db2 | 2990 | bpstat_should_step (void) |
c906108c SS |
2991 | { |
2992 | struct breakpoint *b; | |
2993 | ALL_BREAKPOINTS (b) | |
2994 | if (b->enable == enabled && b->type == bp_watchpoint) | |
3172dc30 | 2995 | return 1; |
c906108c SS |
2996 | return 0; |
2997 | } | |
2998 | ||
2999 | /* Nonzero if there are enabled hardware watchpoints. */ | |
3000 | int | |
fba45db2 | 3001 | bpstat_have_active_hw_watchpoints (void) |
c906108c SS |
3002 | { |
3003 | struct breakpoint *b; | |
3004 | ALL_BREAKPOINTS (b) | |
3005 | if ((b->enable == enabled) && | |
c5aa993b JM |
3006 | (b->inserted) && |
3007 | ((b->type == bp_hardware_watchpoint) || | |
3008 | (b->type == bp_read_watchpoint) || | |
3009 | (b->type == bp_access_watchpoint))) | |
3172dc30 | 3010 | return 1; |
c906108c SS |
3011 | return 0; |
3012 | } | |
c906108c | 3013 | \f |
c5aa993b | 3014 | |
c906108c SS |
3015 | /* Given a bpstat that records zero or more triggered eventpoints, this |
3016 | function returns another bpstat which contains only the catchpoints | |
3017 | on that first list, if any. */ | |
3018 | void | |
fba45db2 | 3019 | bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list) |
c5aa993b JM |
3020 | { |
3021 | struct bpstats root_bs[1]; | |
3022 | bpstat bs = root_bs; | |
3023 | struct breakpoint *ep; | |
3024 | char *dll_pathname; | |
3025 | ||
c906108c SS |
3026 | bpstat_clear (cp_list); |
3027 | root_bs->next = NULL; | |
c5aa993b JM |
3028 | |
3029 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3030 | { |
3031 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
3032 | ep = ep_list->breakpoint_at; | |
3033 | if (ep == NULL) | |
c5aa993b JM |
3034 | break; |
3035 | if ((ep->type != bp_catch_load) && | |
3036 | (ep->type != bp_catch_unload) && | |
3037 | (ep->type != bp_catch_catch) && | |
53a5351d JM |
3038 | (ep->type != bp_catch_throw)) |
3039 | /* pai: (temp) ADD fork/vfork here!! */ | |
c5aa993b JM |
3040 | continue; |
3041 | ||
c906108c SS |
3042 | /* Yes; add it to the list. */ |
3043 | bs = bpstat_alloc (ep, bs); | |
3044 | *bs = *ep_list; | |
3045 | bs->next = NULL; | |
3046 | bs = root_bs->next; | |
c5aa993b | 3047 | |
c906108c SS |
3048 | #if defined(SOLIB_ADD) |
3049 | /* Also, for each triggered catchpoint, tag it with the name of | |
3050 | the library that caused this trigger. (We copy the name now, | |
3051 | because it's only guaranteed to be available NOW, when the | |
3052 | catchpoint triggers. Clients who may wish to know the name | |
3053 | later must get it from the catchpoint itself.) */ | |
3054 | if (ep->triggered_dll_pathname != NULL) | |
b8c9b27d | 3055 | xfree (ep->triggered_dll_pathname); |
c906108c | 3056 | if (ep->type == bp_catch_load) |
39f77062 KB |
3057 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME ( |
3058 | PIDGET (inferior_ptid)); | |
c906108c | 3059 | else |
39f77062 KB |
3060 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
3061 | PIDGET (inferior_ptid)); | |
c906108c SS |
3062 | #else |
3063 | dll_pathname = NULL; | |
3064 | #endif | |
3065 | if (dll_pathname) | |
3066 | { | |
53a5351d JM |
3067 | ep->triggered_dll_pathname = (char *) |
3068 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3069 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3070 | } | |
3071 | else | |
3072 | ep->triggered_dll_pathname = NULL; | |
3073 | } | |
c5aa993b | 3074 | |
c906108c SS |
3075 | *cp_list = bs; |
3076 | } | |
3077 | ||
c4093a6a | 3078 | /* Print B to gdb_stdout. */ |
c906108c | 3079 | static void |
c4093a6a JM |
3080 | print_one_breakpoint (struct breakpoint *b, |
3081 | CORE_ADDR *last_addr) | |
c906108c | 3082 | { |
c906108c SS |
3083 | register struct command_line *l; |
3084 | register struct symbol *sym; | |
c4093a6a JM |
3085 | struct ep_type_description |
3086 | { | |
3087 | enum bptype type; | |
3088 | char *description; | |
3089 | }; | |
3090 | static struct ep_type_description bptypes[] = | |
c906108c | 3091 | { |
c5aa993b JM |
3092 | {bp_none, "?deleted?"}, |
3093 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3094 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3095 | {bp_until, "until"}, |
3096 | {bp_finish, "finish"}, | |
3097 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3098 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3099 | {bp_read_watchpoint, "read watchpoint"}, |
3100 | {bp_access_watchpoint, "acc watchpoint"}, | |
3101 | {bp_longjmp, "longjmp"}, | |
3102 | {bp_longjmp_resume, "longjmp resume"}, | |
3103 | {bp_step_resume, "step resume"}, | |
3104 | {bp_through_sigtramp, "sigtramp"}, | |
3105 | {bp_watchpoint_scope, "watchpoint scope"}, | |
3106 | {bp_call_dummy, "call dummy"}, | |
3107 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3108 | {bp_thread_event, "thread events"}, |
c5aa993b JM |
3109 | {bp_catch_load, "catch load"}, |
3110 | {bp_catch_unload, "catch unload"}, | |
3111 | {bp_catch_fork, "catch fork"}, | |
3112 | {bp_catch_vfork, "catch vfork"}, | |
3113 | {bp_catch_exec, "catch exec"}, | |
3114 | {bp_catch_catch, "catch catch"}, | |
3115 | {bp_catch_throw, "catch throw"} | |
3116 | }; | |
c4093a6a | 3117 | |
c5aa993b JM |
3118 | static char *bpdisps[] = |
3119 | {"del", "dstp", "dis", "keep"}; | |
c2c6d25f | 3120 | static char bpenables[] = "nynny"; |
c906108c | 3121 | char wrap_indent[80]; |
8b93c638 JM |
3122 | #ifdef UI_OUT |
3123 | struct ui_stream *stb = ui_out_stream_new (uiout); | |
3124 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3125 | #endif | |
c906108c | 3126 | |
c4093a6a | 3127 | annotate_record (); |
8b93c638 | 3128 | #ifdef UI_OUT |
666547aa | 3129 | ui_out_tuple_begin (uiout, "bkpt"); |
8b93c638 | 3130 | #endif |
c4093a6a JM |
3131 | |
3132 | /* 1 */ | |
3133 | annotate_field (0); | |
8b93c638 JM |
3134 | #ifdef UI_OUT |
3135 | ui_out_field_int (uiout, "number", b->number); | |
3136 | #else | |
c4093a6a | 3137 | printf_filtered ("%-3d ", b->number); |
8b93c638 | 3138 | #endif |
c4093a6a JM |
3139 | |
3140 | /* 2 */ | |
3141 | annotate_field (1); | |
3142 | if (((int) b->type > (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3143 | || ((int) b->type != bptypes[(int) b->type].type)) | |
8e65ff28 AC |
3144 | internal_error (__FILE__, __LINE__, |
3145 | "bptypes table does not describe type #%d.", | |
c4093a6a | 3146 | (int) b->type); |
8b93c638 JM |
3147 | #ifdef UI_OUT |
3148 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); | |
3149 | #else | |
c4093a6a | 3150 | printf_filtered ("%-14s ", bptypes[(int) b->type].description); |
8b93c638 | 3151 | #endif |
c4093a6a JM |
3152 | |
3153 | /* 3 */ | |
3154 | annotate_field (2); | |
8b93c638 JM |
3155 | #ifdef UI_OUT |
3156 | ui_out_field_string (uiout, "disp", bpdisps[(int) b->disposition]); | |
3157 | #else | |
c4093a6a | 3158 | printf_filtered ("%-4s ", bpdisps[(int) b->disposition]); |
8b93c638 | 3159 | #endif |
c4093a6a JM |
3160 | |
3161 | /* 4 */ | |
3162 | annotate_field (3); | |
8b93c638 JM |
3163 | #ifdef UI_OUT |
3164 | ui_out_field_fmt (uiout, "enabled", "%c", bpenables[(int) b->enable]); | |
3165 | ui_out_spaces (uiout, 2); | |
3166 | #else | |
c4093a6a | 3167 | printf_filtered ("%-3c ", bpenables[(int) b->enable]); |
8b93c638 | 3168 | #endif |
c4093a6a JM |
3169 | |
3170 | /* 5 and 6 */ | |
3171 | strcpy (wrap_indent, " "); | |
3172 | if (addressprint) | |
75ac9d7b MS |
3173 | { |
3174 | if (TARGET_ADDR_BIT <= 32) | |
3175 | strcat (wrap_indent, " "); | |
3176 | else | |
3177 | strcat (wrap_indent, " "); | |
3178 | } | |
c4093a6a | 3179 | switch (b->type) |
c5aa993b | 3180 | { |
c4093a6a | 3181 | case bp_none: |
8e65ff28 AC |
3182 | internal_error (__FILE__, __LINE__, |
3183 | "print_one_breakpoint: bp_none encountered\n"); | |
c4093a6a | 3184 | break; |
c906108c | 3185 | |
c4093a6a JM |
3186 | case bp_watchpoint: |
3187 | case bp_hardware_watchpoint: | |
3188 | case bp_read_watchpoint: | |
3189 | case bp_access_watchpoint: | |
3190 | /* Field 4, the address, is omitted (which makes the columns | |
3191 | not line up too nicely with the headers, but the effect | |
3192 | is relatively readable). */ | |
8b93c638 JM |
3193 | #ifdef UI_OUT |
3194 | if (addressprint) | |
3195 | ui_out_field_skip (uiout, "addr"); | |
3196 | annotate_field (5); | |
3197 | print_expression (b->exp, stb->stream); | |
3198 | ui_out_field_stream (uiout, "what", stb); | |
3199 | #else | |
c4093a6a JM |
3200 | annotate_field (5); |
3201 | print_expression (b->exp, gdb_stdout); | |
8b93c638 | 3202 | #endif |
c4093a6a JM |
3203 | break; |
3204 | ||
3205 | case bp_catch_load: | |
3206 | case bp_catch_unload: | |
3207 | /* Field 4, the address, is omitted (which makes the columns | |
3208 | not line up too nicely with the headers, but the effect | |
3209 | is relatively readable). */ | |
8b93c638 JM |
3210 | #ifdef UI_OUT |
3211 | if (addressprint) | |
3212 | ui_out_field_skip (uiout, "addr"); | |
3213 | annotate_field (5); | |
3214 | if (b->dll_pathname == NULL) | |
3215 | { | |
3216 | ui_out_field_string (uiout, "what", "<any library>"); | |
3217 | ui_out_spaces (uiout, 1); | |
3218 | } | |
3219 | else | |
3220 | { | |
3221 | ui_out_text (uiout, "library \""); | |
3222 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3223 | ui_out_text (uiout, "\" "); | |
3224 | } | |
3225 | #else | |
c4093a6a JM |
3226 | annotate_field (5); |
3227 | if (b->dll_pathname == NULL) | |
3228 | printf_filtered ("<any library> "); | |
3229 | else | |
3230 | printf_filtered ("library \"%s\" ", b->dll_pathname); | |
8b93c638 | 3231 | #endif |
c4093a6a JM |
3232 | break; |
3233 | ||
3234 | case bp_catch_fork: | |
3235 | case bp_catch_vfork: | |
3236 | /* Field 4, the address, is omitted (which makes the columns | |
3237 | not line up too nicely with the headers, but the effect | |
3238 | is relatively readable). */ | |
8b93c638 JM |
3239 | #ifdef UI_OUT |
3240 | if (addressprint) | |
3241 | ui_out_field_skip (uiout, "addr"); | |
3242 | annotate_field (5); | |
3243 | if (b->forked_inferior_pid != 0) | |
3244 | { | |
3245 | ui_out_text (uiout, "process "); | |
3246 | ui_out_field_int (uiout, "what", b->forked_inferior_pid); | |
3247 | ui_out_spaces (uiout, 1); | |
3248 | } | |
3249 | #else | |
c4093a6a JM |
3250 | annotate_field (5); |
3251 | if (b->forked_inferior_pid != 0) | |
3252 | printf_filtered ("process %d ", b->forked_inferior_pid); | |
3253 | break; | |
8b93c638 | 3254 | #endif |
c4093a6a JM |
3255 | |
3256 | case bp_catch_exec: | |
3257 | /* Field 4, the address, is omitted (which makes the columns | |
3258 | not line up too nicely with the headers, but the effect | |
3259 | is relatively readable). */ | |
8b93c638 JM |
3260 | #ifdef UI_OUT |
3261 | if (addressprint) | |
3262 | ui_out_field_skip (uiout, "addr"); | |
3263 | annotate_field (5); | |
3264 | if (b->exec_pathname != NULL) | |
3265 | { | |
3266 | ui_out_text (uiout, "program \""); | |
3267 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
3268 | ui_out_text (uiout, "\" "); | |
3269 | } | |
3270 | #else | |
c4093a6a JM |
3271 | annotate_field (5); |
3272 | if (b->exec_pathname != NULL) | |
3273 | printf_filtered ("program \"%s\" ", b->exec_pathname); | |
8b93c638 | 3274 | #endif |
c4093a6a | 3275 | break; |
c906108c | 3276 | |
c4093a6a JM |
3277 | case bp_catch_catch: |
3278 | /* Field 4, the address, is omitted (which makes the columns | |
3279 | not line up too nicely with the headers, but the effect | |
3280 | is relatively readable). */ | |
8b93c638 JM |
3281 | #ifdef UI_OUT |
3282 | if (addressprint) | |
3283 | ui_out_field_skip (uiout, "addr"); | |
3284 | annotate_field (5); | |
3285 | ui_out_field_string (uiout, "what", "exception catch"); | |
3286 | ui_out_spaces (uiout, 1); | |
3287 | #else | |
c4093a6a JM |
3288 | annotate_field (5); |
3289 | printf_filtered ("exception catch "); | |
8b93c638 | 3290 | #endif |
c4093a6a | 3291 | break; |
c906108c | 3292 | |
c4093a6a JM |
3293 | case bp_catch_throw: |
3294 | /* Field 4, the address, is omitted (which makes the columns | |
3295 | not line up too nicely with the headers, but the effect | |
3296 | is relatively readable). */ | |
8b93c638 JM |
3297 | #ifdef UI_OUT |
3298 | if (addressprint) | |
3299 | ui_out_field_skip (uiout, "addr"); | |
3300 | annotate_field (5); | |
3301 | ui_out_field_string (uiout, "what", "exception throw"); | |
3302 | ui_out_spaces (uiout, 1); | |
3303 | #else | |
c4093a6a JM |
3304 | annotate_field (5); |
3305 | printf_filtered ("exception throw "); | |
8b93c638 | 3306 | #endif |
c4093a6a JM |
3307 | break; |
3308 | ||
3309 | case bp_breakpoint: | |
3310 | case bp_hardware_breakpoint: | |
3311 | case bp_until: | |
3312 | case bp_finish: | |
3313 | case bp_longjmp: | |
3314 | case bp_longjmp_resume: | |
3315 | case bp_step_resume: | |
3316 | case bp_through_sigtramp: | |
3317 | case bp_watchpoint_scope: | |
3318 | case bp_call_dummy: | |
3319 | case bp_shlib_event: | |
3320 | case bp_thread_event: | |
8b93c638 JM |
3321 | #ifdef UI_OUT |
3322 | if (addressprint) | |
3323 | { | |
3324 | annotate_field (4); | |
3325 | ui_out_field_core_addr (uiout, "addr", b->address); | |
3326 | } | |
3327 | annotate_field (5); | |
3328 | *last_addr = b->address; | |
3329 | if (b->source_file) | |
3330 | { | |
3331 | sym = find_pc_sect_function (b->address, b->section); | |
3332 | if (sym) | |
3333 | { | |
3334 | ui_out_text (uiout, "in "); | |
3335 | ui_out_field_string (uiout, "func", | |
3336 | SYMBOL_SOURCE_NAME (sym)); | |
3337 | ui_out_wrap_hint (uiout, wrap_indent); | |
3338 | ui_out_text (uiout, " at "); | |
3339 | } | |
3340 | ui_out_field_string (uiout, "file", b->source_file); | |
3341 | ui_out_text (uiout, ":"); | |
3342 | ui_out_field_int (uiout, "line", b->line_number); | |
3343 | } | |
3344 | else | |
3345 | { | |
3346 | print_address_symbolic (b->address, stb->stream, demangle, ""); | |
3347 | ui_out_field_stream (uiout, "at", stb); | |
3348 | } | |
3349 | #else | |
c5aa993b | 3350 | if (addressprint) |
c5aa993b | 3351 | { |
75ac9d7b MS |
3352 | char *tmp; |
3353 | ||
c4093a6a | 3354 | annotate_field (4); |
75ac9d7b MS |
3355 | |
3356 | if (TARGET_ADDR_BIT <= 32) | |
3357 | tmp = longest_local_hex_string_custom (b->address | |
3358 | & (CORE_ADDR) 0xffffffff, | |
3359 | "08l"); | |
3360 | else | |
3361 | tmp = longest_local_hex_string_custom (b->address, "016l"); | |
3362 | ||
3363 | printf_filtered ("%s ", tmp); | |
c4093a6a JM |
3364 | } |
3365 | annotate_field (5); | |
3366 | *last_addr = b->address; | |
3367 | if (b->source_file) | |
3368 | { | |
3369 | sym = find_pc_sect_function (b->address, b->section); | |
3370 | if (sym) | |
c5aa993b | 3371 | { |
c4093a6a JM |
3372 | fputs_filtered ("in ", gdb_stdout); |
3373 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout); | |
3374 | wrap_here (wrap_indent); | |
3375 | fputs_filtered (" at ", gdb_stdout); | |
c5aa993b | 3376 | } |
c4093a6a JM |
3377 | fputs_filtered (b->source_file, gdb_stdout); |
3378 | printf_filtered (":%d", b->line_number); | |
c5aa993b | 3379 | } |
c4093a6a JM |
3380 | else |
3381 | print_address_symbolic (b->address, gdb_stdout, demangle, " "); | |
8b93c638 | 3382 | #endif |
c4093a6a JM |
3383 | break; |
3384 | } | |
3385 | ||
3386 | if (b->thread != -1) | |
3387 | { | |
8b93c638 JM |
3388 | #ifdef UI_OUT |
3389 | /* FIXME: This seems to be redundant and lost here; see the | |
3390 | "stop only in" line a little further down. */ | |
3391 | ui_out_text (uiout, " thread "); | |
3392 | ui_out_field_int (uiout, "thread", b->thread); | |
3393 | #else | |
c4093a6a | 3394 | printf_filtered (" thread %d", b->thread); |
8b93c638 | 3395 | #endif |
c4093a6a JM |
3396 | } |
3397 | ||
8b93c638 JM |
3398 | #ifdef UI_OUT |
3399 | ui_out_text (uiout, "\n"); | |
3400 | #else | |
c4093a6a | 3401 | printf_filtered ("\n"); |
8b93c638 | 3402 | #endif |
c4093a6a JM |
3403 | |
3404 | if (b->frame) | |
3405 | { | |
3406 | annotate_field (6); | |
8b93c638 JM |
3407 | #ifdef UI_OUT |
3408 | ui_out_text (uiout, "\tstop only in stack frame at "); | |
3409 | ui_out_field_core_addr (uiout, "frame", b->frame); | |
3410 | ui_out_text (uiout, "\n"); | |
3411 | #else | |
c4093a6a JM |
3412 | printf_filtered ("\tstop only in stack frame at "); |
3413 | print_address_numeric (b->frame, 1, gdb_stdout); | |
c5aa993b | 3414 | printf_filtered ("\n"); |
8b93c638 | 3415 | #endif |
c4093a6a JM |
3416 | } |
3417 | ||
3418 | if (b->cond) | |
3419 | { | |
3420 | annotate_field (7); | |
8b93c638 JM |
3421 | #ifdef UI_OUT |
3422 | ui_out_text (uiout, "\tstop only if "); | |
3423 | print_expression (b->cond, stb->stream); | |
3424 | ui_out_field_stream (uiout, "cond", stb); | |
3425 | ui_out_text (uiout, "\n"); | |
3426 | #else | |
c4093a6a JM |
3427 | printf_filtered ("\tstop only if "); |
3428 | print_expression (b->cond, gdb_stdout); | |
3429 | printf_filtered ("\n"); | |
8b93c638 | 3430 | #endif |
c4093a6a JM |
3431 | } |
3432 | ||
3433 | if (b->thread != -1) | |
3434 | { | |
3435 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3436 | #ifdef UI_OUT |
3437 | ui_out_text (uiout, "\tstop only in thread "); | |
3438 | ui_out_field_int (uiout, "thread", b->thread); | |
3439 | ui_out_text (uiout, "\n"); | |
3440 | #else | |
c4093a6a | 3441 | printf_filtered ("\tstop only in thread %d\n", b->thread); |
8b93c638 | 3442 | #endif |
c4093a6a JM |
3443 | } |
3444 | ||
3445 | if (show_breakpoint_hit_counts && b->hit_count) | |
3446 | { | |
3447 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3448 | #ifdef UI_OUT |
3449 | if (ep_is_catchpoint (b)) | |
3450 | ui_out_text (uiout, "\tcatchpoint"); | |
3451 | else | |
3452 | ui_out_text (uiout, "\tbreakpoint"); | |
3453 | ui_out_text (uiout, " already hit "); | |
3454 | ui_out_field_int (uiout, "times", b->hit_count); | |
3455 | if (b->hit_count == 1) | |
3456 | ui_out_text (uiout, " time\n"); | |
3457 | else | |
3458 | ui_out_text (uiout, " times\n"); | |
3459 | #else | |
c4093a6a JM |
3460 | if (ep_is_catchpoint (b)) |
3461 | printf_filtered ("\tcatchpoint"); | |
3462 | else | |
3463 | printf_filtered ("\tbreakpoint"); | |
3464 | printf_filtered (" already hit %d time%s\n", | |
3465 | b->hit_count, (b->hit_count == 1 ? "" : "s")); | |
8b93c638 | 3466 | #endif |
c4093a6a JM |
3467 | } |
3468 | ||
fb40c209 AC |
3469 | #ifdef UI_OUT |
3470 | /* Output the count also if it is zero, but only if this is | |
3471 | mi. FIXME: Should have a better test for this. */ | |
3472 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
3473 | if (show_breakpoint_hit_counts && b->hit_count == 0) | |
3474 | ui_out_field_int (uiout, "times", b->hit_count); | |
3475 | #endif | |
8b93c638 | 3476 | |
c4093a6a JM |
3477 | if (b->ignore_count) |
3478 | { | |
3479 | annotate_field (8); | |
8b93c638 JM |
3480 | #ifdef UI_OUT |
3481 | ui_out_text (uiout, "\tignore next "); | |
3482 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3483 | ui_out_text (uiout, " hits\n"); | |
3484 | #else | |
c4093a6a | 3485 | printf_filtered ("\tignore next %d hits\n", b->ignore_count); |
8b93c638 | 3486 | #endif |
c4093a6a JM |
3487 | } |
3488 | ||
3489 | if ((l = b->commands)) | |
3490 | { | |
3491 | annotate_field (9); | |
8b93c638 | 3492 | #ifdef UI_OUT |
666547aa | 3493 | ui_out_tuple_begin (uiout, "script"); |
8b93c638 | 3494 | print_command_lines (uiout, l, 4); |
666547aa | 3495 | ui_out_tuple_end (uiout); |
8b93c638 | 3496 | #else |
c4093a6a | 3497 | while (l) |
c5aa993b | 3498 | { |
c4093a6a JM |
3499 | print_command_line (l, 4, gdb_stdout); |
3500 | l = l->next; | |
c5aa993b | 3501 | } |
8b93c638 | 3502 | #endif |
c4093a6a | 3503 | } |
8b93c638 | 3504 | #ifdef UI_OUT |
666547aa | 3505 | ui_out_tuple_end (uiout); |
8b93c638 JM |
3506 | do_cleanups (old_chain); |
3507 | #endif | |
c4093a6a | 3508 | } |
c5aa993b | 3509 | |
c4093a6a JM |
3510 | struct captured_breakpoint_query_args |
3511 | { | |
3512 | int bnum; | |
3513 | }; | |
c5aa993b | 3514 | |
c4093a6a JM |
3515 | static int |
3516 | do_captured_breakpoint_query (void *data) | |
3517 | { | |
3518 | struct captured_breakpoint_query_args *args = data; | |
3519 | register struct breakpoint *b; | |
3520 | CORE_ADDR dummy_addr = 0; | |
3521 | ALL_BREAKPOINTS (b) | |
3522 | { | |
3523 | if (args->bnum == b->number) | |
c5aa993b | 3524 | { |
c4093a6a JM |
3525 | print_one_breakpoint (b, &dummy_addr); |
3526 | return GDB_RC_OK; | |
c5aa993b | 3527 | } |
c4093a6a JM |
3528 | } |
3529 | return GDB_RC_NONE; | |
3530 | } | |
c5aa993b | 3531 | |
c4093a6a JM |
3532 | enum gdb_rc |
3533 | gdb_breakpoint_query (/* output object, */ int bnum) | |
3534 | { | |
3535 | struct captured_breakpoint_query_args args; | |
3536 | args.bnum = bnum; | |
3537 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3538 | an error. */ | |
3539 | return catch_errors (do_captured_breakpoint_query, &args, | |
3540 | NULL, RETURN_MASK_ALL); | |
3541 | } | |
c5aa993b | 3542 | |
c4093a6a JM |
3543 | /* Print information on breakpoint number BNUM, or -1 if all. |
3544 | If WATCHPOINTS is zero, process only breakpoints; if WATCHPOINTS | |
3545 | is nonzero, process only watchpoints. */ | |
c906108c | 3546 | |
c4093a6a | 3547 | static void |
fba45db2 | 3548 | breakpoint_1 (int bnum, int allflag) |
c4093a6a JM |
3549 | { |
3550 | register struct breakpoint *b; | |
3551 | CORE_ADDR last_addr = (CORE_ADDR) -1; | |
3552 | int found_a_breakpoint = 0; | |
3553 | ||
8b93c638 JM |
3554 | #ifdef UI_OUT |
3555 | if (addressprint) | |
3556 | ui_out_table_begin (uiout, 6, "BreakpointTable"); | |
3557 | else | |
3558 | ui_out_table_begin (uiout, 5, "BreakpointTable"); | |
3559 | #endif /* UI_OUT */ | |
3560 | ||
c4093a6a JM |
3561 | ALL_BREAKPOINTS (b) |
3562 | if (bnum == -1 | |
3563 | || bnum == b->number) | |
3564 | { | |
3565 | /* We only print out user settable breakpoints unless the | |
3566 | allflag is set. */ | |
3567 | if (!allflag | |
3568 | && b->type != bp_breakpoint | |
3569 | && b->type != bp_catch_load | |
3570 | && b->type != bp_catch_unload | |
3571 | && b->type != bp_catch_fork | |
3572 | && b->type != bp_catch_vfork | |
3573 | && b->type != bp_catch_exec | |
3574 | && b->type != bp_catch_catch | |
3575 | && b->type != bp_catch_throw | |
3576 | && b->type != bp_hardware_breakpoint | |
3577 | && b->type != bp_watchpoint | |
3578 | && b->type != bp_read_watchpoint | |
3579 | && b->type != bp_access_watchpoint | |
3580 | && b->type != bp_hardware_watchpoint) | |
3581 | continue; | |
3582 | ||
3583 | if (!found_a_breakpoint++) | |
3584 | { | |
3585 | annotate_breakpoints_headers (); | |
8b93c638 JM |
3586 | #ifdef UI_OUT |
3587 | annotate_field (0); | |
3588 | ui_out_table_header (uiout, 3, ui_left, "Num"); /* 1 */ | |
3589 | annotate_field (1); | |
3590 | ui_out_table_header (uiout, 14, ui_left, "Type"); /* 2 */ | |
3591 | annotate_field (2); | |
3592 | ui_out_table_header (uiout, 4, ui_left, "Disp"); /* 3 */ | |
3593 | annotate_field (3); | |
3594 | ui_out_table_header (uiout, 3, ui_left, "Enb"); /* 4 */ | |
3595 | if (addressprint) | |
3596 | { | |
3597 | annotate_field (4); | |
75ac9d7b MS |
3598 | if (TARGET_ADDR_BIT <= 32) |
3599 | ui_out_table_header (uiout, 10, ui_left, "Address"); /* 5 */ | |
3600 | else | |
3601 | ui_out_table_header (uiout, 18, ui_left, "Address"); /* 5 */ | |
8b93c638 JM |
3602 | } |
3603 | annotate_field (5); | |
3604 | ui_out_table_header (uiout, 40, ui_noalign, "What"); /* 6 */ | |
3605 | ui_out_table_body (uiout); | |
3606 | #else | |
c4093a6a JM |
3607 | annotate_field (0); |
3608 | printf_filtered ("Num "); | |
3609 | annotate_field (1); | |
3610 | printf_filtered ("Type "); | |
3611 | annotate_field (2); | |
3612 | printf_filtered ("Disp "); | |
3613 | annotate_field (3); | |
3614 | printf_filtered ("Enb "); | |
3615 | if (addressprint) | |
3616 | { | |
3617 | annotate_field (4); | |
75ac9d7b MS |
3618 | if (TARGET_ADDR_BIT <= 32) |
3619 | printf_filtered ("Address "); | |
3620 | else | |
3621 | printf_filtered ("Address "); | |
c4093a6a JM |
3622 | } |
3623 | annotate_field (5); | |
3624 | printf_filtered ("What\n"); | |
8b93c638 | 3625 | #endif /* UI_OUT */ |
c4093a6a JM |
3626 | annotate_breakpoints_table (); |
3627 | } | |
3628 | ||
3629 | print_one_breakpoint (b, &last_addr); | |
3630 | } | |
3631 | ||
c906108c SS |
3632 | if (!found_a_breakpoint) |
3633 | { | |
8b93c638 JM |
3634 | #ifdef UI_OUT |
3635 | if (bnum == -1) | |
3636 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3637 | else | |
3638 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3639 | bnum); | |
3640 | #else | |
c906108c | 3641 | if (bnum == -1) |
c5aa993b | 3642 | printf_filtered ("No breakpoints or watchpoints.\n"); |
c906108c | 3643 | else |
c5aa993b | 3644 | printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum); |
8b93c638 | 3645 | #endif /* UI_OUT */ |
c906108c SS |
3646 | } |
3647 | else | |
c4093a6a JM |
3648 | { |
3649 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3650 | that a comparison of an unsigned with -1 is always false. */ | |
3651 | if (last_addr != (CORE_ADDR) -1) | |
3652 | set_next_address (last_addr); | |
3653 | } | |
c906108c | 3654 | |
8b93c638 JM |
3655 | #ifdef UI_OUT |
3656 | ui_out_table_end (uiout); | |
3657 | #endif /* UI_OUT */ | |
c4093a6a JM |
3658 | /* FIXME? Should this be moved up so that it is only called when |
3659 | there have been breakpoints? */ | |
c906108c SS |
3660 | annotate_breakpoints_table_end (); |
3661 | } | |
3662 | ||
3663 | /* ARGSUSED */ | |
3664 | static void | |
fba45db2 | 3665 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
3666 | { |
3667 | int bnum = -1; | |
3668 | ||
3669 | if (bnum_exp) | |
bb518678 | 3670 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3671 | |
3672 | breakpoint_1 (bnum, 0); | |
3673 | } | |
3674 | ||
c906108c | 3675 | /* ARGSUSED */ |
7a292a7a | 3676 | static void |
fba45db2 | 3677 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
3678 | { |
3679 | int bnum = -1; | |
3680 | ||
3681 | if (bnum_exp) | |
bb518678 | 3682 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3683 | |
3684 | breakpoint_1 (bnum, 1); | |
3685 | } | |
3686 | ||
c906108c SS |
3687 | /* Print a message describing any breakpoints set at PC. */ |
3688 | ||
3689 | static void | |
fba45db2 | 3690 | describe_other_breakpoints (CORE_ADDR pc, asection *section) |
c906108c SS |
3691 | { |
3692 | register int others = 0; | |
3693 | register struct breakpoint *b; | |
3694 | ||
3695 | ALL_BREAKPOINTS (b) | |
3696 | if (b->address == pc) | |
c5aa993b JM |
3697 | if (overlay_debugging == 0 || |
3698 | b->section == section) | |
3699 | others++; | |
c906108c SS |
3700 | if (others > 0) |
3701 | { | |
3702 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); | |
3703 | ALL_BREAKPOINTS (b) | |
3704 | if (b->address == pc) | |
c5aa993b JM |
3705 | if (overlay_debugging == 0 || |
3706 | b->section == section) | |
3707 | { | |
3708 | others--; | |
d85310f7 MS |
3709 | printf_filtered ("%d%s%s ", |
3710 | b->number, | |
3711 | ((b->enable == disabled || | |
3712 | b->enable == shlib_disabled || | |
3713 | b->enable == call_disabled) ? " (disabled)" | |
3714 | : b->enable == permanent ? " (permanent)" | |
3715 | : ""), | |
3716 | (others > 1) ? "," | |
3717 | : ((others == 1) ? " and" : "")); | |
c5aa993b | 3718 | } |
c906108c SS |
3719 | printf_filtered ("also set at pc "); |
3720 | print_address_numeric (pc, 1, gdb_stdout); | |
3721 | printf_filtered (".\n"); | |
3722 | } | |
3723 | } | |
3724 | \f | |
3725 | /* Set the default place to put a breakpoint | |
3726 | for the `break' command with no arguments. */ | |
3727 | ||
3728 | void | |
fba45db2 KB |
3729 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
3730 | int line) | |
c906108c SS |
3731 | { |
3732 | default_breakpoint_valid = valid; | |
3733 | default_breakpoint_address = addr; | |
3734 | default_breakpoint_symtab = symtab; | |
3735 | default_breakpoint_line = line; | |
3736 | } | |
3737 | ||
e4f237da KB |
3738 | /* Return true iff it is meaningful to use the address member of |
3739 | BPT. For some breakpoint types, the address member is irrelevant | |
3740 | and it makes no sense to attempt to compare it to other addresses | |
3741 | (or use it for any other purpose either). | |
3742 | ||
3743 | More specifically, each of the following breakpoint types will always | |
3744 | have a zero valued address and we don't want check_duplicates() to mark | |
3745 | breakpoints of any of these types to be a duplicate of an actual | |
3746 | breakpoint at address zero: | |
3747 | ||
3748 | bp_watchpoint | |
3749 | bp_hardware_watchpoint | |
3750 | bp_read_watchpoint | |
3751 | bp_access_watchpoint | |
3752 | bp_catch_exec | |
3753 | bp_longjmp_resume | |
3754 | bp_catch_fork | |
3755 | bp_catch_vork */ | |
3756 | ||
3757 | static int | |
3758 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
3759 | { | |
3760 | enum bptype type = bpt->type; | |
3761 | ||
3762 | return (type != bp_watchpoint | |
3763 | && type != bp_hardware_watchpoint | |
3764 | && type != bp_read_watchpoint | |
3765 | && type != bp_access_watchpoint | |
3766 | && type != bp_catch_exec | |
3767 | && type != bp_longjmp_resume | |
3768 | && type != bp_catch_fork | |
3769 | && type != bp_catch_vfork); | |
3770 | } | |
3771 | ||
9f60f21b | 3772 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 3773 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 3774 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
3775 | If we have a permanent breakpoint at the same place as BPT, make |
3776 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
3777 | |
3778 | static void | |
9f60f21b | 3779 | check_duplicates (struct breakpoint *bpt) |
c906108c SS |
3780 | { |
3781 | register struct breakpoint *b; | |
3782 | register int count = 0; | |
c2c6d25f | 3783 | struct breakpoint *perm_bp = 0; |
9f60f21b JB |
3784 | CORE_ADDR address = bpt->address; |
3785 | asection *section = bpt->section; | |
c906108c | 3786 | |
e4f237da | 3787 | if (! breakpoint_address_is_meaningful (bpt)) |
c906108c SS |
3788 | return; |
3789 | ||
3790 | ALL_BREAKPOINTS (b) | |
3791 | if (b->enable != disabled | |
3792 | && b->enable != shlib_disabled | |
3793 | && b->enable != call_disabled | |
3794 | && b->address == address | |
e4f237da KB |
3795 | && (overlay_debugging == 0 || b->section == section) |
3796 | && breakpoint_address_is_meaningful (b)) | |
c5aa993b | 3797 | { |
c2c6d25f JM |
3798 | /* Have we found a permanent breakpoint? */ |
3799 | if (b->enable == permanent) | |
3800 | { | |
3801 | perm_bp = b; | |
3802 | break; | |
3803 | } | |
3804 | ||
c5aa993b JM |
3805 | count++; |
3806 | b->duplicate = count > 1; | |
3807 | } | |
c2c6d25f JM |
3808 | |
3809 | /* If we found a permanent breakpoint at this address, go over the | |
3810 | list again and declare all the other breakpoints there to be the | |
3811 | duplicates. */ | |
3812 | if (perm_bp) | |
3813 | { | |
3814 | perm_bp->duplicate = 0; | |
3815 | ||
3816 | /* Permanent breakpoint should always be inserted. */ | |
3817 | if (! perm_bp->inserted) | |
8e65ff28 AC |
3818 | internal_error (__FILE__, __LINE__, |
3819 | "allegedly permanent breakpoint is not " | |
c2c6d25f JM |
3820 | "actually inserted"); |
3821 | ||
3822 | ALL_BREAKPOINTS (b) | |
3823 | if (b != perm_bp) | |
3824 | { | |
3825 | if (b->inserted) | |
8e65ff28 AC |
3826 | internal_error (__FILE__, __LINE__, |
3827 | "another breakpoint was inserted on top of " | |
c2c6d25f JM |
3828 | "a permanent breakpoint"); |
3829 | ||
3830 | if (b->enable != disabled | |
3831 | && b->enable != shlib_disabled | |
3832 | && b->enable != call_disabled | |
3833 | && b->address == address | |
e4f237da KB |
3834 | && (overlay_debugging == 0 || b->section == section) |
3835 | && breakpoint_address_is_meaningful (b)) | |
c2c6d25f JM |
3836 | b->duplicate = 1; |
3837 | } | |
3838 | } | |
c906108c SS |
3839 | } |
3840 | ||
4d28f7a8 KB |
3841 | /* set_raw_breakpoint() is a low level routine for allocating and |
3842 | partially initializing a breakpoint of type BPTYPE. The newly | |
3843 | created breakpoint's address, section, source file name, and line | |
3844 | number are provided by SAL. The newly created and partially | |
3845 | initialized breakpoint is added to the breakpoint chain and | |
3846 | is also returned as the value of this function. | |
c906108c | 3847 | |
4d28f7a8 KB |
3848 | It is expected that the caller will complete the initialization of |
3849 | the newly created breakpoint struct as well as output any status | |
3850 | information regarding the creation of a new breakpoint. In | |
3851 | particular, set_raw_breakpoint() does NOT set the breakpoint | |
3852 | number! Care should be taken to not allow an error() to occur | |
3853 | prior to completing the initialization of the breakpoint. If this | |
3854 | should happen, a bogus breakpoint will be left on the chain. */ | |
c906108c SS |
3855 | |
3856 | struct breakpoint * | |
4d28f7a8 | 3857 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) |
c906108c SS |
3858 | { |
3859 | register struct breakpoint *b, *b1; | |
3860 | ||
3861 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
3862 | memset (b, 0, sizeof (*b)); | |
3863 | b->address = sal.pc; | |
3864 | if (sal.symtab == NULL) | |
3865 | b->source_file = NULL; | |
3866 | else | |
3867 | b->source_file = savestring (sal.symtab->filename, | |
3868 | strlen (sal.symtab->filename)); | |
3869 | b->section = sal.section; | |
4d28f7a8 | 3870 | b->type = bptype; |
c906108c SS |
3871 | b->language = current_language->la_language; |
3872 | b->input_radix = input_radix; | |
3873 | b->thread = -1; | |
3874 | b->line_number = sal.line; | |
3875 | b->enable = enabled; | |
3876 | b->next = 0; | |
3877 | b->silent = 0; | |
3878 | b->ignore_count = 0; | |
3879 | b->commands = NULL; | |
3880 | b->frame = 0; | |
3881 | b->dll_pathname = NULL; | |
3882 | b->triggered_dll_pathname = NULL; | |
3883 | b->forked_inferior_pid = 0; | |
3884 | b->exec_pathname = NULL; | |
3885 | ||
3886 | /* Add this breakpoint to the end of the chain | |
3887 | so that a list of breakpoints will come out in order | |
3888 | of increasing numbers. */ | |
3889 | ||
3890 | b1 = breakpoint_chain; | |
3891 | if (b1 == 0) | |
3892 | breakpoint_chain = b; | |
3893 | else | |
3894 | { | |
3895 | while (b1->next) | |
3896 | b1 = b1->next; | |
3897 | b1->next = b; | |
3898 | } | |
3899 | ||
9f60f21b | 3900 | check_duplicates (b); |
c906108c SS |
3901 | breakpoints_changed (); |
3902 | ||
3903 | return b; | |
3904 | } | |
3905 | ||
c2c6d25f JM |
3906 | |
3907 | /* Note that the breakpoint object B describes a permanent breakpoint | |
3908 | instruction, hard-wired into the inferior's code. */ | |
3909 | void | |
3910 | make_breakpoint_permanent (struct breakpoint *b) | |
3911 | { | |
3912 | b->enable = permanent; | |
3913 | ||
3914 | /* By definition, permanent breakpoints are already present in the code. */ | |
3915 | b->inserted = 1; | |
3916 | } | |
3917 | ||
c906108c SS |
3918 | #ifdef GET_LONGJMP_TARGET |
3919 | ||
3920 | static void | |
fba45db2 | 3921 | create_longjmp_breakpoint (char *func_name) |
c906108c SS |
3922 | { |
3923 | struct symtab_and_line sal; | |
3924 | struct breakpoint *b; | |
3925 | ||
c5aa993b | 3926 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
3927 | if (func_name != NULL) |
3928 | { | |
3929 | struct minimal_symbol *m; | |
3930 | ||
53a5351d JM |
3931 | m = lookup_minimal_symbol_text (func_name, NULL, |
3932 | (struct objfile *) NULL); | |
c906108c SS |
3933 | if (m) |
3934 | sal.pc = SYMBOL_VALUE_ADDRESS (m); | |
3935 | else | |
3936 | return; | |
3937 | } | |
3938 | sal.section = find_pc_overlay (sal.pc); | |
4d28f7a8 KB |
3939 | b = set_raw_breakpoint (sal, |
3940 | func_name != NULL ? bp_longjmp : bp_longjmp_resume); | |
c906108c | 3941 | |
c906108c SS |
3942 | b->disposition = donttouch; |
3943 | b->enable = disabled; | |
3944 | b->silent = 1; | |
3945 | if (func_name) | |
4fcf66da | 3946 | b->addr_string = xstrdup (func_name); |
c906108c SS |
3947 | b->number = internal_breakpoint_number--; |
3948 | } | |
3949 | ||
c5aa993b | 3950 | #endif /* #ifdef GET_LONGJMP_TARGET */ |
c906108c | 3951 | |
53a5351d JM |
3952 | /* Call this routine when stepping and nexting to enable a breakpoint |
3953 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
3954 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
3955 | ||
3956 | void | |
fba45db2 | 3957 | enable_longjmp_breakpoint (void) |
c906108c SS |
3958 | { |
3959 | register struct breakpoint *b; | |
3960 | ||
3961 | ALL_BREAKPOINTS (b) | |
3962 | if (b->type == bp_longjmp) | |
c5aa993b JM |
3963 | { |
3964 | b->enable = enabled; | |
9f60f21b | 3965 | check_duplicates (b); |
c5aa993b | 3966 | } |
c906108c SS |
3967 | } |
3968 | ||
3969 | void | |
fba45db2 | 3970 | disable_longjmp_breakpoint (void) |
c906108c SS |
3971 | { |
3972 | register struct breakpoint *b; | |
3973 | ||
3974 | ALL_BREAKPOINTS (b) | |
c5aa993b | 3975 | if (b->type == bp_longjmp |
c906108c | 3976 | || b->type == bp_longjmp_resume) |
c5aa993b JM |
3977 | { |
3978 | b->enable = disabled; | |
9f60f21b | 3979 | check_duplicates (b); |
c5aa993b | 3980 | } |
c906108c SS |
3981 | } |
3982 | ||
c4093a6a | 3983 | struct breakpoint * |
fba45db2 | 3984 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
3985 | { |
3986 | struct breakpoint *b; | |
3987 | struct symtab_and_line sal; | |
3988 | char addr_string[80]; /* Surely an addr can't be longer than that. */ | |
3989 | ||
3990 | INIT_SAL (&sal); /* initialize to zeroes */ | |
3991 | sal.pc = address; | |
3992 | sal.section = find_pc_overlay (sal.pc); | |
4d28f7a8 | 3993 | b = set_raw_breakpoint (sal, bp_thread_event); |
c4093a6a JM |
3994 | |
3995 | b->number = internal_breakpoint_number--; | |
3996 | b->disposition = donttouch; | |
c4093a6a JM |
3997 | b->enable = enabled; |
3998 | /* addr_string has to be used or breakpoint_re_set will delete me. */ | |
3999 | sprintf (addr_string, "*0x%s", paddr (b->address)); | |
4fcf66da | 4000 | b->addr_string = xstrdup (addr_string); |
c4093a6a JM |
4001 | |
4002 | return b; | |
4003 | } | |
4004 | ||
4005 | void | |
4006 | remove_thread_event_breakpoints (void) | |
4007 | { | |
4008 | struct breakpoint *b, *temp; | |
4009 | ||
4010 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4011 | if (b->type == bp_thread_event) | |
4012 | delete_breakpoint (b); | |
4013 | } | |
4014 | ||
c906108c SS |
4015 | #ifdef SOLIB_ADD |
4016 | void | |
fba45db2 | 4017 | remove_solib_event_breakpoints (void) |
c906108c SS |
4018 | { |
4019 | register struct breakpoint *b, *temp; | |
4020 | ||
4021 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4022 | if (b->type == bp_shlib_event) | |
3172dc30 | 4023 | delete_breakpoint (b); |
c906108c SS |
4024 | } |
4025 | ||
c2c6d25f | 4026 | struct breakpoint * |
fba45db2 | 4027 | create_solib_event_breakpoint (CORE_ADDR address) |
c906108c SS |
4028 | { |
4029 | struct breakpoint *b; | |
4030 | struct symtab_and_line sal; | |
4031 | ||
c5aa993b | 4032 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
4033 | sal.pc = address; |
4034 | sal.section = find_pc_overlay (sal.pc); | |
4d28f7a8 | 4035 | b = set_raw_breakpoint (sal, bp_shlib_event); |
c906108c SS |
4036 | b->number = internal_breakpoint_number--; |
4037 | b->disposition = donttouch; | |
c2c6d25f JM |
4038 | |
4039 | return b; | |
c906108c SS |
4040 | } |
4041 | ||
104c1213 JM |
4042 | /* Disable any breakpoints that are on code in shared libraries. Only |
4043 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4044 | ||
c906108c | 4045 | void |
fba45db2 | 4046 | disable_breakpoints_in_shlibs (int silent) |
c906108c | 4047 | { |
c5aa993b JM |
4048 | struct breakpoint *b; |
4049 | int disabled_shlib_breaks = 0; | |
c906108c SS |
4050 | |
4051 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ | |
4052 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4053 | { |
c906108c | 4054 | #if defined (PC_SOLIB) |
c5aa993b JM |
4055 | if (((b->type == bp_breakpoint) || |
4056 | (b->type == bp_hardware_breakpoint)) && | |
104c1213 | 4057 | b->enable == enabled && |
c5aa993b JM |
4058 | !b->duplicate && |
4059 | PC_SOLIB (b->address)) | |
4060 | { | |
4061 | b->enable = shlib_disabled; | |
4062 | if (!silent) | |
4063 | { | |
4064 | if (!disabled_shlib_breaks) | |
4065 | { | |
4066 | target_terminal_ours_for_output (); | |
53a5351d | 4067 | warning ("Temporarily disabling shared library breakpoints:"); |
c5aa993b JM |
4068 | } |
4069 | disabled_shlib_breaks = 1; | |
53a5351d | 4070 | warning ("breakpoint #%d ", b->number); |
c5aa993b JM |
4071 | } |
4072 | } | |
c906108c | 4073 | #endif |
c5aa993b | 4074 | } |
c906108c SS |
4075 | } |
4076 | ||
4077 | /* Try to reenable any breakpoints in shared libraries. */ | |
4078 | void | |
fba45db2 | 4079 | re_enable_breakpoints_in_shlibs (void) |
c906108c SS |
4080 | { |
4081 | struct breakpoint *b; | |
4082 | ||
4083 | ALL_BREAKPOINTS (b) | |
4084 | if (b->enable == shlib_disabled) | |
c5aa993b JM |
4085 | { |
4086 | char buf[1]; | |
c906108c | 4087 | |
c5aa993b JM |
4088 | /* Do not reenable the breakpoint if the shared library |
4089 | is still not mapped in. */ | |
4090 | if (target_read_memory (b->address, buf, 1) == 0) | |
4091 | b->enable = enabled; | |
4092 | } | |
c906108c SS |
4093 | } |
4094 | ||
4095 | #endif | |
4096 | ||
4097 | static void | |
fba45db2 KB |
4098 | solib_load_unload_1 (char *hookname, int tempflag, char *dll_pathname, |
4099 | char *cond_string, enum bptype bp_kind) | |
c906108c | 4100 | { |
c5aa993b | 4101 | struct breakpoint *b; |
c906108c | 4102 | struct symtabs_and_lines sals; |
c5aa993b JM |
4103 | struct cleanup *old_chain; |
4104 | struct cleanup *canonical_strings_chain = NULL; | |
c5aa993b JM |
4105 | char *addr_start = hookname; |
4106 | char *addr_end = NULL; | |
4107 | char **canonical = (char **) NULL; | |
4108 | int thread = -1; /* All threads. */ | |
4109 | ||
c906108c SS |
4110 | /* Set a breakpoint on the specified hook. */ |
4111 | sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical); | |
4112 | addr_end = hookname; | |
c5aa993b | 4113 | |
c906108c SS |
4114 | if (sals.nelts == 0) |
4115 | { | |
4116 | warning ("Unable to set a breakpoint on dynamic linker callback."); | |
4117 | warning ("Suggest linking with /opt/langtools/lib/end.o."); | |
4118 | warning ("GDB will be unable to track shl_load/shl_unload calls"); | |
4119 | return; | |
4120 | } | |
4121 | if (sals.nelts != 1) | |
4122 | { | |
53a5351d | 4123 | warning ("Unable to set unique breakpoint on dynamic linker callback."); |
c906108c SS |
4124 | warning ("GDB will be unable to track shl_load/shl_unload calls"); |
4125 | return; | |
4126 | } | |
4127 | ||
53a5351d JM |
4128 | /* Make sure that all storage allocated in decode_line_1 gets freed |
4129 | in case the following errors out. */ | |
b8c9b27d | 4130 | old_chain = make_cleanup (xfree, sals.sals); |
c5aa993b | 4131 | if (canonical != (char **) NULL) |
c906108c | 4132 | { |
b8c9b27d | 4133 | make_cleanup (xfree, canonical); |
c906108c SS |
4134 | canonical_strings_chain = make_cleanup (null_cleanup, 0); |
4135 | if (canonical[0] != NULL) | |
b8c9b27d | 4136 | make_cleanup (xfree, canonical[0]); |
c906108c | 4137 | } |
c5aa993b | 4138 | |
c906108c | 4139 | resolve_sal_pc (&sals.sals[0]); |
c5aa993b | 4140 | |
c906108c | 4141 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
c5aa993b | 4142 | if (canonical != (char **) NULL) |
c906108c | 4143 | discard_cleanups (canonical_strings_chain); |
c5aa993b | 4144 | |
4d28f7a8 | 4145 | b = set_raw_breakpoint (sals.sals[0], bp_kind); |
c906108c SS |
4146 | set_breakpoint_count (breakpoint_count + 1); |
4147 | b->number = breakpoint_count; | |
4148 | b->cond = NULL; | |
53a5351d JM |
4149 | b->cond_string = (cond_string == NULL) ? |
4150 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c | 4151 | b->thread = thread; |
c5aa993b JM |
4152 | |
4153 | if (canonical != (char **) NULL && canonical[0] != NULL) | |
c906108c SS |
4154 | b->addr_string = canonical[0]; |
4155 | else if (addr_start) | |
4156 | b->addr_string = savestring (addr_start, addr_end - addr_start); | |
c5aa993b | 4157 | |
c906108c SS |
4158 | b->enable = enabled; |
4159 | b->disposition = tempflag ? del : donttouch; | |
c5aa993b | 4160 | |
c906108c SS |
4161 | if (dll_pathname == NULL) |
4162 | b->dll_pathname = NULL; | |
4163 | else | |
4164 | { | |
4165 | b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1); | |
4166 | strcpy (b->dll_pathname, dll_pathname); | |
4167 | } | |
c5aa993b | 4168 | |
c906108c SS |
4169 | mention (b); |
4170 | do_cleanups (old_chain); | |
4171 | } | |
4172 | ||
4173 | void | |
fba45db2 KB |
4174 | create_solib_load_event_breakpoint (char *hookname, int tempflag, |
4175 | char *dll_pathname, char *cond_string) | |
c906108c | 4176 | { |
53a5351d JM |
4177 | solib_load_unload_1 (hookname, tempflag, dll_pathname, |
4178 | cond_string, bp_catch_load); | |
c906108c SS |
4179 | } |
4180 | ||
4181 | void | |
fba45db2 KB |
4182 | create_solib_unload_event_breakpoint (char *hookname, int tempflag, |
4183 | char *dll_pathname, char *cond_string) | |
c906108c | 4184 | { |
53a5351d JM |
4185 | solib_load_unload_1 (hookname,tempflag, dll_pathname, |
4186 | cond_string, bp_catch_unload); | |
c906108c SS |
4187 | } |
4188 | ||
4189 | static void | |
fba45db2 KB |
4190 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4191 | enum bptype bp_kind) | |
c906108c | 4192 | { |
c5aa993b JM |
4193 | struct symtab_and_line sal; |
4194 | struct breakpoint *b; | |
4195 | int thread = -1; /* All threads. */ | |
4196 | ||
4197 | INIT_SAL (&sal); | |
c906108c SS |
4198 | sal.pc = 0; |
4199 | sal.symtab = NULL; | |
4200 | sal.line = 0; | |
c5aa993b | 4201 | |
4d28f7a8 | 4202 | b = set_raw_breakpoint (sal, bp_kind); |
c906108c SS |
4203 | set_breakpoint_count (breakpoint_count + 1); |
4204 | b->number = breakpoint_count; | |
4205 | b->cond = NULL; | |
53a5351d JM |
4206 | b->cond_string = (cond_string == NULL) ? |
4207 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4208 | b->thread = thread; |
4209 | b->addr_string = NULL; | |
4210 | b->enable = enabled; | |
4211 | b->disposition = tempflag ? del : donttouch; | |
4212 | b->forked_inferior_pid = 0; | |
c5aa993b | 4213 | |
c906108c SS |
4214 | mention (b); |
4215 | } | |
4216 | ||
4217 | void | |
fba45db2 | 4218 | create_fork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4219 | { |
4220 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
4221 | } | |
c5aa993b | 4222 | |
c906108c | 4223 | void |
fba45db2 | 4224 | create_vfork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4225 | { |
4226 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
4227 | } | |
4228 | ||
4229 | void | |
fba45db2 | 4230 | create_exec_event_catchpoint (int tempflag, char *cond_string) |
c906108c | 4231 | { |
c5aa993b JM |
4232 | struct symtab_and_line sal; |
4233 | struct breakpoint *b; | |
4234 | int thread = -1; /* All threads. */ | |
c906108c | 4235 | |
c5aa993b | 4236 | INIT_SAL (&sal); |
c906108c SS |
4237 | sal.pc = 0; |
4238 | sal.symtab = NULL; | |
4239 | sal.line = 0; | |
4240 | ||
4d28f7a8 | 4241 | b = set_raw_breakpoint (sal, bp_catch_exec); |
c906108c SS |
4242 | set_breakpoint_count (breakpoint_count + 1); |
4243 | b->number = breakpoint_count; | |
4244 | b->cond = NULL; | |
53a5351d JM |
4245 | b->cond_string = (cond_string == NULL) ? |
4246 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4247 | b->thread = thread; |
4248 | b->addr_string = NULL; | |
4249 | b->enable = enabled; | |
4250 | b->disposition = tempflag ? del : donttouch; | |
4251 | ||
c906108c SS |
4252 | mention (b); |
4253 | } | |
4254 | ||
4255 | static int | |
fba45db2 | 4256 | hw_breakpoint_used_count (void) |
c906108c SS |
4257 | { |
4258 | register struct breakpoint *b; | |
4259 | int i = 0; | |
4260 | ||
4261 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4262 | { |
4263 | if (b->type == bp_hardware_breakpoint && b->enable == enabled) | |
4264 | i++; | |
4265 | } | |
c906108c SS |
4266 | |
4267 | return i; | |
4268 | } | |
4269 | ||
4270 | static int | |
fba45db2 | 4271 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c SS |
4272 | { |
4273 | register struct breakpoint *b; | |
4274 | int i = 0; | |
4275 | ||
4276 | *other_type_used = 0; | |
4277 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4278 | { |
4279 | if (b->enable == enabled) | |
4280 | { | |
4281 | if (b->type == type) | |
4282 | i++; | |
4283 | else if ((b->type == bp_hardware_watchpoint || | |
4284 | b->type == bp_read_watchpoint || | |
4285 | b->type == bp_access_watchpoint) | |
4286 | && b->enable == enabled) | |
4287 | *other_type_used = 1; | |
4288 | } | |
4289 | } | |
c906108c SS |
4290 | return i; |
4291 | } | |
4292 | ||
53a5351d JM |
4293 | /* Call this after hitting the longjmp() breakpoint. Use this to set |
4294 | a new breakpoint at the target of the jmp_buf. | |
c906108c | 4295 | |
53a5351d JM |
4296 | FIXME - This ought to be done by setting a temporary breakpoint |
4297 | that gets deleted automatically... */ | |
c906108c SS |
4298 | |
4299 | void | |
fba45db2 | 4300 | set_longjmp_resume_breakpoint (CORE_ADDR pc, struct frame_info *frame) |
c906108c SS |
4301 | { |
4302 | register struct breakpoint *b; | |
4303 | ||
4304 | ALL_BREAKPOINTS (b) | |
4305 | if (b->type == bp_longjmp_resume) | |
c5aa993b JM |
4306 | { |
4307 | b->address = pc; | |
4308 | b->enable = enabled; | |
4309 | if (frame != NULL) | |
4310 | b->frame = frame->frame; | |
4311 | else | |
4312 | b->frame = 0; | |
9f60f21b | 4313 | check_duplicates (b); |
c5aa993b JM |
4314 | return; |
4315 | } | |
c906108c SS |
4316 | } |
4317 | ||
4318 | void | |
fba45db2 | 4319 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4320 | { |
c5aa993b | 4321 | struct breakpoint *b; |
c906108c SS |
4322 | |
4323 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4324 | { |
4325 | if (((b->type == bp_watchpoint) | |
4326 | || (b->type == bp_hardware_watchpoint) | |
4327 | || (b->type == bp_read_watchpoint) | |
4328 | || (b->type == bp_access_watchpoint) | |
4329 | || ep_is_exception_catchpoint (b)) | |
4330 | && (b->enable == enabled)) | |
4331 | { | |
4332 | b->enable = call_disabled; | |
9f60f21b | 4333 | check_duplicates (b); |
c5aa993b JM |
4334 | } |
4335 | } | |
c906108c SS |
4336 | } |
4337 | ||
4338 | void | |
fba45db2 | 4339 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4340 | { |
c5aa993b | 4341 | struct breakpoint *b; |
c906108c SS |
4342 | |
4343 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4344 | { |
4345 | if (((b->type == bp_watchpoint) | |
4346 | || (b->type == bp_hardware_watchpoint) | |
4347 | || (b->type == bp_read_watchpoint) | |
4348 | || (b->type == bp_access_watchpoint) | |
4349 | || ep_is_exception_catchpoint (b)) | |
4350 | && (b->enable == call_disabled)) | |
4351 | { | |
4352 | b->enable = enabled; | |
9f60f21b | 4353 | check_duplicates (b); |
c5aa993b JM |
4354 | } |
4355 | } | |
c906108c SS |
4356 | } |
4357 | ||
4358 | ||
4359 | /* Set a breakpoint that will evaporate an end of command | |
4360 | at address specified by SAL. | |
4361 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4362 | ||
4363 | struct breakpoint * | |
fba45db2 KB |
4364 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_info *frame, |
4365 | enum bptype type) | |
c906108c SS |
4366 | { |
4367 | register struct breakpoint *b; | |
4d28f7a8 | 4368 | b = set_raw_breakpoint (sal, type); |
c906108c SS |
4369 | b->enable = enabled; |
4370 | b->disposition = donttouch; | |
4371 | b->frame = (frame ? frame->frame : 0); | |
4372 | ||
4373 | /* If we're debugging a multi-threaded program, then we | |
4374 | want momentary breakpoints to be active in only a | |
4375 | single thread of control. */ | |
39f77062 KB |
4376 | if (in_thread_list (inferior_ptid)) |
4377 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
4378 | |
4379 | return b; | |
4380 | } | |
c906108c | 4381 | \f |
c5aa993b | 4382 | |
c906108c SS |
4383 | /* Tell the user we have just set a breakpoint B. */ |
4384 | ||
4385 | static void | |
fba45db2 | 4386 | mention (struct breakpoint *b) |
c906108c SS |
4387 | { |
4388 | int say_where = 0; | |
8b93c638 JM |
4389 | #ifdef UI_OUT |
4390 | struct cleanup *old_chain; | |
4391 | struct ui_stream *stb; | |
4392 | ||
4393 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 4394 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
8b93c638 | 4395 | #endif /* UI_OUT */ |
c906108c SS |
4396 | |
4397 | /* FIXME: This is misplaced; mention() is called by things (like hitting a | |
4398 | watchpoint) other than breakpoint creation. It should be possible to | |
4399 | clean this up and at the same time replace the random calls to | |
4400 | breakpoint_changed with this hook, as has already been done for | |
4401 | delete_breakpoint_hook and so on. */ | |
4402 | if (create_breakpoint_hook) | |
4403 | create_breakpoint_hook (b); | |
104c1213 | 4404 | breakpoint_create_event (b->number); |
c906108c SS |
4405 | |
4406 | switch (b->type) | |
4407 | { | |
4408 | case bp_none: | |
4409 | printf_filtered ("(apparently deleted?) Eventpoint %d: ", b->number); | |
4410 | break; | |
8b93c638 JM |
4411 | #ifdef UI_OUT |
4412 | case bp_watchpoint: | |
4413 | ui_out_text (uiout, "Watchpoint "); | |
666547aa | 4414 | ui_out_tuple_begin (uiout, "wpt"); |
8b93c638 JM |
4415 | ui_out_field_int (uiout, "number", b->number); |
4416 | ui_out_text (uiout, ": "); | |
4417 | print_expression (b->exp, stb->stream); | |
4418 | ui_out_field_stream (uiout, "exp", stb); | |
666547aa | 4419 | ui_out_tuple_end (uiout); |
8b93c638 JM |
4420 | break; |
4421 | case bp_hardware_watchpoint: | |
4422 | ui_out_text (uiout, "Hardware watchpoint "); | |
666547aa | 4423 | ui_out_tuple_begin (uiout, "wpt"); |
8b93c638 JM |
4424 | ui_out_field_int (uiout, "number", b->number); |
4425 | ui_out_text (uiout, ": "); | |
4426 | print_expression (b->exp, stb->stream); | |
4427 | ui_out_field_stream (uiout, "exp", stb); | |
666547aa | 4428 | ui_out_tuple_end (uiout); |
8b93c638 JM |
4429 | break; |
4430 | #else | |
c906108c SS |
4431 | case bp_watchpoint: |
4432 | printf_filtered ("Watchpoint %d: ", b->number); | |
4433 | print_expression (b->exp, gdb_stdout); | |
4434 | break; | |
4435 | case bp_hardware_watchpoint: | |
4436 | printf_filtered ("Hardware watchpoint %d: ", b->number); | |
4437 | print_expression (b->exp, gdb_stdout); | |
4438 | break; | |
8b93c638 JM |
4439 | #endif |
4440 | #ifdef UI_OUT | |
4441 | case bp_read_watchpoint: | |
4442 | ui_out_text (uiout, "Hardware read watchpoint "); | |
666547aa | 4443 | ui_out_tuple_begin (uiout, "hw-rwpt"); |
8b93c638 JM |
4444 | ui_out_field_int (uiout, "number", b->number); |
4445 | ui_out_text (uiout, ": "); | |
4446 | print_expression (b->exp, stb->stream); | |
4447 | ui_out_field_stream (uiout, "exp", stb); | |
666547aa | 4448 | ui_out_tuple_end (uiout); |
8b93c638 JM |
4449 | break; |
4450 | case bp_access_watchpoint: | |
4451 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
666547aa | 4452 | ui_out_tuple_begin (uiout, "hw-awpt"); |
8b93c638 JM |
4453 | ui_out_field_int (uiout, "number", b->number); |
4454 | ui_out_text (uiout, ": "); | |
4455 | print_expression (b->exp, stb->stream); | |
4456 | ui_out_field_stream (uiout, "exp", stb); | |
666547aa | 4457 | ui_out_tuple_end (uiout); |
8b93c638 JM |
4458 | break; |
4459 | #else | |
c906108c SS |
4460 | case bp_read_watchpoint: |
4461 | printf_filtered ("Hardware read watchpoint %d: ", b->number); | |
4462 | print_expression (b->exp, gdb_stdout); | |
4463 | break; | |
4464 | case bp_access_watchpoint: | |
53a5351d JM |
4465 | printf_filtered ("Hardware access (read/write) watchpoint %d: ", |
4466 | b->number); | |
c906108c SS |
4467 | print_expression (b->exp, gdb_stdout); |
4468 | break; | |
8b93c638 | 4469 | #endif |
c906108c | 4470 | case bp_breakpoint: |
fb40c209 AC |
4471 | #ifdef UI_OUT |
4472 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
4473 | { | |
4474 | say_where = 0; | |
4475 | break; | |
4476 | } | |
4477 | #endif | |
c906108c SS |
4478 | printf_filtered ("Breakpoint %d", b->number); |
4479 | say_where = 1; | |
4480 | break; | |
4481 | case bp_hardware_breakpoint: | |
fb40c209 AC |
4482 | #ifdef UI_OUT |
4483 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
4484 | { | |
4485 | say_where = 0; | |
4486 | break; | |
4487 | } | |
4488 | #endif | |
c906108c SS |
4489 | printf_filtered ("Hardware assisted breakpoint %d", b->number); |
4490 | say_where = 1; | |
4491 | break; | |
4492 | case bp_catch_load: | |
4493 | case bp_catch_unload: | |
4494 | printf_filtered ("Catchpoint %d (%s %s)", | |
c5aa993b JM |
4495 | b->number, |
4496 | (b->type == bp_catch_load) ? "load" : "unload", | |
53a5351d JM |
4497 | (b->dll_pathname != NULL) ? |
4498 | b->dll_pathname : "<any library>"); | |
c906108c SS |
4499 | break; |
4500 | case bp_catch_fork: | |
4501 | case bp_catch_vfork: | |
4502 | printf_filtered ("Catchpoint %d (%s)", | |
c5aa993b JM |
4503 | b->number, |
4504 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
c906108c SS |
4505 | break; |
4506 | case bp_catch_exec: | |
4507 | printf_filtered ("Catchpoint %d (exec)", | |
c5aa993b | 4508 | b->number); |
c906108c SS |
4509 | break; |
4510 | case bp_catch_catch: | |
4511 | case bp_catch_throw: | |
4512 | printf_filtered ("Catchpoint %d (%s)", | |
c5aa993b JM |
4513 | b->number, |
4514 | (b->type == bp_catch_catch) ? "catch" : "throw"); | |
c906108c SS |
4515 | break; |
4516 | ||
4517 | case bp_until: | |
4518 | case bp_finish: | |
4519 | case bp_longjmp: | |
4520 | case bp_longjmp_resume: | |
4521 | case bp_step_resume: | |
4522 | case bp_through_sigtramp: | |
4523 | case bp_call_dummy: | |
4524 | case bp_watchpoint_scope: | |
4525 | case bp_shlib_event: | |
c4093a6a | 4526 | case bp_thread_event: |
c906108c SS |
4527 | break; |
4528 | } | |
4529 | if (say_where) | |
4530 | { | |
4531 | if (addressprint || b->source_file == NULL) | |
4532 | { | |
4533 | printf_filtered (" at "); | |
4534 | print_address_numeric (b->address, 1, gdb_stdout); | |
4535 | } | |
4536 | if (b->source_file) | |
4537 | printf_filtered (": file %s, line %d.", | |
4538 | b->source_file, b->line_number); | |
c5aa993b JM |
4539 | TUIDO (((TuiOpaqueFuncPtr) tui_vAllSetHasBreakAt, b, 1)); |
4540 | TUIDO (((TuiOpaqueFuncPtr) tuiUpdateAllExecInfos)); | |
c906108c | 4541 | } |
8b93c638 JM |
4542 | #ifdef UI_OUT |
4543 | do_cleanups (old_chain); | |
fb40c209 AC |
4544 | #endif |
4545 | #ifdef UI_OUT | |
4546 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
4547 | return; | |
8b93c638 | 4548 | #endif |
c906108c SS |
4549 | printf_filtered ("\n"); |
4550 | } | |
c906108c | 4551 | \f |
c5aa993b | 4552 | |
c3f6f71d JM |
4553 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
4554 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i], | |
4555 | COND[i] and COND_STRING[i] values. | |
4556 | ||
4557 | NOTE: If the function succeeds, the caller is expected to cleanup | |
4558 | the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the | |
4559 | array contents). If the function fails (error() is called), the | |
4560 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4561 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
4562 | |
4563 | static void | |
c3f6f71d JM |
4564 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
4565 | struct expression **cond, char **cond_string, | |
4566 | enum bptype type, enum bpdisp disposition, | |
4567 | int thread, int ignore_count, int from_tty) | |
c906108c | 4568 | { |
c3f6f71d JM |
4569 | if (type == bp_hardware_breakpoint) |
4570 | { | |
4571 | int i = hw_breakpoint_used_count (); | |
4572 | int target_resources_ok = | |
4573 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
4574 | i + sals.nelts, 0); | |
4575 | if (target_resources_ok == 0) | |
4576 | error ("No hardware breakpoint support in the target."); | |
4577 | else if (target_resources_ok < 0) | |
4578 | error ("Hardware breakpoints used exceeds limit."); | |
4579 | } | |
c906108c | 4580 | |
c3f6f71d JM |
4581 | /* Now set all the breakpoints. */ |
4582 | { | |
4583 | int i; | |
4584 | for (i = 0; i < sals.nelts; i++) | |
4585 | { | |
4586 | struct breakpoint *b; | |
4587 | struct symtab_and_line sal = sals.sals[i]; | |
c906108c | 4588 | |
c3f6f71d JM |
4589 | if (from_tty) |
4590 | describe_other_breakpoints (sal.pc, sal.section); | |
4591 | ||
4d28f7a8 | 4592 | b = set_raw_breakpoint (sal, type); |
c3f6f71d JM |
4593 | set_breakpoint_count (breakpoint_count + 1); |
4594 | b->number = breakpoint_count; | |
c3f6f71d JM |
4595 | b->cond = cond[i]; |
4596 | b->thread = thread; | |
4597 | b->addr_string = addr_string[i]; | |
4598 | b->cond_string = cond_string[i]; | |
4599 | b->ignore_count = ignore_count; | |
4600 | b->enable = enabled; | |
4601 | b->disposition = disposition; | |
4602 | mention (b); | |
4603 | } | |
4604 | } | |
4605 | } | |
c906108c | 4606 | |
c3f6f71d JM |
4607 | /* Parse ARG which is assumed to be a SAL specification possibly |
4608 | followed by conditionals. On return, SALS contains an array of SAL | |
4609 | addresses found. ADDR_STRING contains a vector of (canonical) | |
4610 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 4611 | |
c3f6f71d JM |
4612 | void |
4613 | parse_breakpoint_sals (char **address, | |
4614 | struct symtabs_and_lines *sals, | |
4615 | char ***addr_string) | |
4616 | { | |
4617 | char *addr_start = *address; | |
4618 | *addr_string = NULL; | |
4619 | /* If no arg given, or if first arg is 'if ', use the default | |
4620 | breakpoint. */ | |
4621 | if ((*address) == NULL | |
4622 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
4623 | { |
4624 | if (default_breakpoint_valid) | |
4625 | { | |
c3f6f71d JM |
4626 | struct symtab_and_line sal; |
4627 | INIT_SAL (&sal); /* initialize to zeroes */ | |
4628 | sals->sals = (struct symtab_and_line *) | |
c906108c SS |
4629 | xmalloc (sizeof (struct symtab_and_line)); |
4630 | sal.pc = default_breakpoint_address; | |
4631 | sal.line = default_breakpoint_line; | |
4632 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 4633 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
4634 | sals->sals[0] = sal; |
4635 | sals->nelts = 1; | |
c906108c SS |
4636 | } |
4637 | else | |
4638 | error ("No default breakpoint address now."); | |
4639 | } | |
4640 | else | |
4641 | { | |
c906108c | 4642 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
4643 | current_source_symtab (which is decode_line_1's default). This |
4644 | should produce the results we want almost all of the time while | |
4645 | leaving default_breakpoint_* alone. */ | |
c906108c SS |
4646 | if (default_breakpoint_valid |
4647 | && (!current_source_symtab | |
c3f6f71d JM |
4648 | || (strchr ("+-", (*address)[0]) != NULL))) |
4649 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, | |
4650 | default_breakpoint_line, addr_string); | |
c906108c | 4651 | else |
c3f6f71d | 4652 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, addr_string); |
c906108c | 4653 | } |
c3f6f71d JM |
4654 | /* For any SAL that didn't have a canonical string, fill one in. */ |
4655 | if (sals->nelts > 0 && *addr_string == NULL) | |
4656 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
4657 | if (addr_start != (*address)) | |
c906108c | 4658 | { |
c3f6f71d JM |
4659 | int i; |
4660 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 4661 | { |
c3f6f71d JM |
4662 | /* Add the string if not present. */ |
4663 | if ((*addr_string)[i] == NULL) | |
4664 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
4665 | } |
4666 | } | |
c3f6f71d | 4667 | } |
c906108c | 4668 | |
c906108c | 4669 | |
c3f6f71d JM |
4670 | /* Convert each SAL into a real PC. Verify that the PC can be |
4671 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 4672 | |
c3f6f71d JM |
4673 | void |
4674 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, | |
4675 | char *address) | |
4676 | { | |
4677 | int i; | |
4678 | for (i = 0; i < sals->nelts; i++) | |
4679 | { | |
4680 | resolve_sal_pc (&sals->sals[i]); | |
c906108c SS |
4681 | |
4682 | /* It's possible for the PC to be nonzero, but still an illegal | |
4683 | value on some targets. | |
4684 | ||
4685 | For example, on HP-UX if you start gdb, and before running the | |
4686 | inferior you try to set a breakpoint on a shared library function | |
4687 | "foo" where the inferior doesn't call "foo" directly but does | |
4688 | pass its address to another function call, then we do find a | |
4689 | minimal symbol for the "foo", but it's address is invalid. | |
4690 | (Appears to be an index into a table that the loader sets up | |
4691 | when the inferior is run.) | |
4692 | ||
4693 | Give the target a chance to bless sals.sals[i].pc before we | |
4694 | try to make a breakpoint for it. */ | |
c3f6f71d | 4695 | if (PC_REQUIRES_RUN_BEFORE_USE (sals->sals[i].pc)) |
c5aa993b | 4696 | { |
c3f6f71d JM |
4697 | if (address == NULL) |
4698 | error ("Cannot break without a running program."); | |
4699 | else | |
4700 | error ("Cannot break on %s without a running program.", | |
4701 | address); | |
c5aa993b | 4702 | } |
c3f6f71d JM |
4703 | } |
4704 | } | |
4705 | ||
4706 | /* Set a breakpoint according to ARG (function, linenum or *address) | |
4707 | flag: first bit : 0 non-temporary, 1 temporary. | |
4708 | second bit : 0 normal breakpoint, 1 hardware breakpoint. */ | |
c5aa993b | 4709 | |
c3f6f71d | 4710 | static void |
fba45db2 | 4711 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d JM |
4712 | { |
4713 | int tempflag, hardwareflag; | |
4714 | struct symtabs_and_lines sals; | |
4715 | register struct expression **cond = 0; | |
4716 | /* Pointers in arg to the start, and one past the end, of the | |
4717 | condition. */ | |
4718 | char **cond_string = (char **) NULL; | |
4719 | char *addr_start = arg; | |
4720 | char **addr_string; | |
4721 | struct cleanup *old_chain; | |
4722 | struct cleanup *breakpoint_chain = NULL; | |
4723 | int i; | |
4724 | int thread = -1; | |
4725 | int ignore_count = 0; | |
4726 | ||
4727 | hardwareflag = flag & BP_HARDWAREFLAG; | |
4728 | tempflag = flag & BP_TEMPFLAG; | |
c906108c | 4729 | |
c3f6f71d JM |
4730 | sals.sals = NULL; |
4731 | sals.nelts = 0; | |
4732 | addr_string = NULL; | |
4733 | parse_breakpoint_sals (&arg, &sals, &addr_string); | |
4734 | ||
4735 | if (!sals.nelts) | |
4736 | return; | |
4737 | ||
4738 | /* Create a chain of things that always need to be cleaned up. */ | |
4739 | old_chain = make_cleanup (null_cleanup, 0); | |
4740 | ||
4741 | /* Make sure that all storage allocated to SALS gets freed. */ | |
b8c9b27d | 4742 | make_cleanup (xfree, sals.sals); |
c3f6f71d JM |
4743 | |
4744 | /* Cleanup the addr_string array but not its contents. */ | |
b8c9b27d | 4745 | make_cleanup (xfree, addr_string); |
c3f6f71d JM |
4746 | |
4747 | /* Allocate space for all the cond expressions. */ | |
4748 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 4749 | make_cleanup (xfree, cond); |
c3f6f71d JM |
4750 | |
4751 | /* Allocate space for all the cond strings. */ | |
4752 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 4753 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
4754 | |
4755 | /* ----------------------------- SNIP ----------------------------- | |
4756 | Anything added to the cleanup chain beyond this point is assumed | |
4757 | to be part of a breakpoint. If the breakpoint create succeeds | |
4758 | then the memory is not reclaimed. */ | |
4759 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
4760 | ||
4761 | /* Mark the contents of the addr_string for cleanup. These go on | |
4762 | the breakpoint_chain and only occure if the breakpoint create | |
4763 | fails. */ | |
4764 | for (i = 0; i < sals.nelts; i++) | |
4765 | { | |
4766 | if (addr_string[i] != NULL) | |
b8c9b27d | 4767 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
4768 | } |
4769 | ||
4770 | /* Resolve all line numbers to PC's and verify that the addresses | |
4771 | are ok for the target. */ | |
4772 | breakpoint_sals_to_pc (&sals, addr_start); | |
4773 | ||
4774 | /* Verify that condition can be parsed, before setting any | |
4775 | breakpoints. Allocate a separate condition expression for each | |
4776 | breakpoint. */ | |
4777 | thread = -1; /* No specific thread yet */ | |
4778 | for (i = 0; i < sals.nelts; i++) | |
4779 | { | |
4780 | char *tok = arg; | |
c906108c SS |
4781 | while (tok && *tok) |
4782 | { | |
c3f6f71d JM |
4783 | char *end_tok; |
4784 | int toklen; | |
4785 | char *cond_start = NULL; | |
4786 | char *cond_end = NULL; | |
c906108c SS |
4787 | while (*tok == ' ' || *tok == '\t') |
4788 | tok++; | |
4789 | ||
4790 | end_tok = tok; | |
4791 | ||
4792 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
4793 | end_tok++; | |
4794 | ||
4795 | toklen = end_tok - tok; | |
4796 | ||
4797 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
4798 | { | |
4799 | tok = cond_start = end_tok + 1; | |
c3f6f71d | 4800 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); |
b8c9b27d | 4801 | make_cleanup (xfree, cond[i]); |
c906108c | 4802 | cond_end = tok; |
c3f6f71d | 4803 | cond_string[i] = savestring (cond_start, cond_end - cond_start); |
b8c9b27d | 4804 | make_cleanup (xfree, cond_string[i]); |
c906108c SS |
4805 | } |
4806 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
4807 | { | |
4808 | char *tmptok; | |
4809 | ||
4810 | tok = end_tok + 1; | |
4811 | tmptok = tok; | |
4812 | thread = strtol (tok, &tok, 0); | |
4813 | if (tok == tmptok) | |
4814 | error ("Junk after thread keyword."); | |
4815 | if (!valid_thread_id (thread)) | |
4816 | error ("Unknown thread %d\n", thread); | |
4817 | } | |
4818 | else | |
4819 | error ("Junk at end of arguments."); | |
4820 | } | |
4821 | } | |
c906108c | 4822 | |
c3f6f71d JM |
4823 | create_breakpoints (sals, addr_string, cond, cond_string, |
4824 | hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
4825 | tempflag ? del : donttouch, | |
4826 | thread, ignore_count, from_tty); | |
4827 | ||
4828 | if (sals.nelts > 1) | |
4829 | { | |
4830 | warning ("Multiple breakpoints were set."); | |
4831 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 4832 | } |
c3f6f71d JM |
4833 | /* That's it. Discard the cleanups for data inserted into the |
4834 | breakpoint. */ | |
4835 | discard_cleanups (breakpoint_chain); | |
4836 | /* But cleanup everything else. */ | |
4837 | do_cleanups (old_chain); | |
4838 | } | |
c906108c | 4839 | |
c3f6f71d JM |
4840 | /* Set a breakpoint of TYPE/DISPOSITION according to ARG (function, |
4841 | linenum or *address) with COND and IGNORE_COUNT. */ | |
c906108c | 4842 | |
c3f6f71d JM |
4843 | struct captured_breakpoint_args |
4844 | { | |
4845 | char *address; | |
4846 | char *condition; | |
4847 | int hardwareflag; | |
4848 | int tempflag; | |
4849 | int thread; | |
4850 | int ignore_count; | |
4851 | }; | |
4852 | ||
4853 | static int | |
4854 | do_captured_breakpoint (void *data) | |
4855 | { | |
4856 | struct captured_breakpoint_args *args = data; | |
4857 | struct symtabs_and_lines sals; | |
4858 | register struct expression **cond; | |
4859 | struct cleanup *old_chain; | |
4860 | struct cleanup *breakpoint_chain = NULL; | |
4861 | int i; | |
4862 | char **addr_string; | |
4863 | char **cond_string; | |
4864 | ||
4865 | char *address_end; | |
4866 | ||
4867 | /* Parse the source and lines spec. Delay check that the expression | |
4868 | didn't contain trailing garbage until after cleanups are in | |
4869 | place. */ | |
4870 | sals.sals = NULL; | |
4871 | sals.nelts = 0; | |
4872 | address_end = args->address; | |
4873 | addr_string = NULL; | |
4874 | parse_breakpoint_sals (&address_end, &sals, &addr_string); | |
4875 | ||
4876 | if (!sals.nelts) | |
4877 | return GDB_RC_NONE; | |
4878 | ||
4879 | /* Create a chain of things at always need to be cleaned up. */ | |
4880 | old_chain = make_cleanup (null_cleanup, 0); | |
4881 | ||
4882 | /* Always have a addr_string array, even if it is empty. */ | |
b8c9b27d | 4883 | make_cleanup (xfree, addr_string); |
c3f6f71d JM |
4884 | |
4885 | /* Make sure that all storage allocated to SALS gets freed. */ | |
b8c9b27d | 4886 | make_cleanup (xfree, sals.sals); |
c3f6f71d JM |
4887 | |
4888 | /* Allocate space for all the cond expressions. */ | |
4889 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 4890 | make_cleanup (xfree, cond); |
c3f6f71d JM |
4891 | |
4892 | /* Allocate space for all the cond strings. */ | |
4893 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 4894 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
4895 | |
4896 | /* ----------------------------- SNIP ----------------------------- | |
4897 | Anything added to the cleanup chain beyond this point is assumed | |
4898 | to be part of a breakpoint. If the breakpoint create goes | |
4899 | through then that memory is not cleaned up. */ | |
4900 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
4901 | ||
4902 | /* Mark the contents of the addr_string for cleanup. These go on | |
4903 | the breakpoint_chain and only occure if the breakpoint create | |
4904 | fails. */ | |
c906108c SS |
4905 | for (i = 0; i < sals.nelts; i++) |
4906 | { | |
c3f6f71d | 4907 | if (addr_string[i] != NULL) |
b8c9b27d | 4908 | make_cleanup (xfree, addr_string[i]); |
c906108c SS |
4909 | } |
4910 | ||
c3f6f71d JM |
4911 | /* Wait until now before checking for garbage at the end of the |
4912 | address. That way cleanups can take care of freeing any | |
4913 | memory. */ | |
4914 | if (*address_end != '\0') | |
4915 | error ("Garbage %s following breakpoint address", address_end); | |
4916 | ||
4917 | /* Resolve all line numbers to PC's. */ | |
4918 | breakpoint_sals_to_pc (&sals, args->address); | |
4919 | ||
4920 | /* Verify that conditions can be parsed, before setting any | |
4921 | breakpoints. */ | |
4922 | for (i = 0; i < sals.nelts; i++) | |
c906108c | 4923 | { |
c3f6f71d JM |
4924 | if (args->condition != NULL) |
4925 | { | |
4926 | char *tok = args->condition; | |
4927 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
4928 | if (*tok != '\0') | |
4929 | error ("Garbage %s follows condition", tok); | |
b8c9b27d | 4930 | make_cleanup (xfree, cond[i]); |
c3f6f71d JM |
4931 | cond_string[i] = xstrdup (args->condition); |
4932 | } | |
c906108c | 4933 | } |
c3f6f71d JM |
4934 | |
4935 | create_breakpoints (sals, addr_string, cond, cond_string, | |
4936 | args->hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
4937 | args->tempflag ? del : donttouch, | |
4938 | args->thread, args->ignore_count, 0/*from-tty*/); | |
4939 | ||
4940 | /* That's it. Discard the cleanups for data inserted into the | |
4941 | breakpoint. */ | |
4942 | discard_cleanups (breakpoint_chain); | |
4943 | /* But cleanup everything else. */ | |
c906108c | 4944 | do_cleanups (old_chain); |
c3f6f71d | 4945 | return GDB_RC_OK; |
c906108c SS |
4946 | } |
4947 | ||
c3f6f71d JM |
4948 | enum gdb_rc |
4949 | gdb_breakpoint (char *address, char *condition, | |
4950 | int hardwareflag, int tempflag, | |
4951 | int thread, int ignore_count) | |
4952 | { | |
4953 | struct captured_breakpoint_args args; | |
4954 | args.address = address; | |
4955 | args.condition = condition; | |
4956 | args.hardwareflag = hardwareflag; | |
4957 | args.tempflag = tempflag; | |
4958 | args.thread = thread; | |
4959 | args.ignore_count = ignore_count; | |
4960 | return catch_errors (do_captured_breakpoint, &args, | |
4961 | NULL, RETURN_MASK_ALL); | |
4962 | } | |
4963 | ||
4964 | ||
c906108c | 4965 | static void |
fba45db2 | 4966 | break_at_finish_at_depth_command_1 (char *arg, int flag, int from_tty) |
c906108c SS |
4967 | { |
4968 | struct frame_info *frame; | |
4969 | CORE_ADDR low, high, selected_pc = 0; | |
7f7e9482 AC |
4970 | char *extra_args = NULL; |
4971 | char *level_arg; | |
4972 | char *addr_string; | |
c906108c SS |
4973 | int extra_args_len = 0, if_arg = 0; |
4974 | ||
4975 | if (!arg || | |
4976 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
4977 | { | |
4978 | ||
4979 | if (default_breakpoint_valid) | |
4980 | { | |
4981 | if (selected_frame) | |
4982 | { | |
4983 | selected_pc = selected_frame->pc; | |
4984 | if (arg) | |
4985 | if_arg = 1; | |
4986 | } | |
4987 | else | |
4988 | error ("No selected frame."); | |
4989 | } | |
4990 | else | |
4991 | error ("No default breakpoint address now."); | |
4992 | } | |
4993 | else | |
4994 | { | |
4995 | extra_args = strchr (arg, ' '); | |
4996 | if (extra_args) | |
4997 | { | |
4998 | extra_args++; | |
4999 | extra_args_len = strlen (extra_args); | |
5000 | level_arg = (char *) xmalloc (extra_args - arg); | |
5001 | strncpy (level_arg, arg, extra_args - arg - 1); | |
5002 | level_arg[extra_args - arg - 1] = '\0'; | |
5003 | } | |
5004 | else | |
5005 | { | |
5006 | level_arg = (char *) xmalloc (strlen (arg) + 1); | |
5007 | strcpy (level_arg, arg); | |
5008 | } | |
5009 | ||
5010 | frame = parse_frame_specification (level_arg); | |
5011 | if (frame) | |
5012 | selected_pc = frame->pc; | |
5013 | else | |
5014 | selected_pc = 0; | |
5015 | } | |
5016 | if (if_arg) | |
5017 | { | |
5018 | extra_args = arg; | |
c5aa993b | 5019 | extra_args_len = strlen (arg); |
c906108c SS |
5020 | } |
5021 | ||
5022 | if (selected_pc) | |
5023 | { | |
c5aa993b | 5024 | if (find_pc_partial_function (selected_pc, (char **) NULL, &low, &high)) |
c906108c SS |
5025 | { |
5026 | addr_string = (char *) xmalloc (26 + extra_args_len); | |
5027 | if (extra_args_len) | |
d4f3574e | 5028 | sprintf (addr_string, "*0x%s %s", paddr_nz (high), extra_args); |
c906108c | 5029 | else |
d4f3574e | 5030 | sprintf (addr_string, "*0x%s", paddr_nz (high)); |
c906108c | 5031 | break_command_1 (addr_string, flag, from_tty); |
b8c9b27d | 5032 | xfree (addr_string); |
c906108c SS |
5033 | } |
5034 | else | |
5035 | error ("No function contains the specified address"); | |
5036 | } | |
5037 | else | |
5038 | error ("Unable to set breakpoint at procedure exit"); | |
5039 | } | |
5040 | ||
5041 | ||
5042 | static void | |
fba45db2 | 5043 | break_at_finish_command_1 (char *arg, int flag, int from_tty) |
c906108c SS |
5044 | { |
5045 | char *addr_string, *break_string, *beg_addr_string; | |
5046 | CORE_ADDR low, high; | |
5047 | struct symtabs_and_lines sals; | |
5048 | struct symtab_and_line sal; | |
5049 | struct cleanup *old_chain; | |
7f7e9482 | 5050 | char *extra_args = NULL; |
c906108c SS |
5051 | int extra_args_len = 0; |
5052 | int i, if_arg = 0; | |
5053 | ||
5054 | if (!arg || | |
5055 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
5056 | { | |
5057 | if (default_breakpoint_valid) | |
5058 | { | |
5059 | if (selected_frame) | |
5060 | { | |
5061 | addr_string = (char *) xmalloc (15); | |
d4f3574e | 5062 | sprintf (addr_string, "*0x%s", paddr_nz (selected_frame->pc)); |
c906108c SS |
5063 | if (arg) |
5064 | if_arg = 1; | |
5065 | } | |
5066 | else | |
5067 | error ("No selected frame."); | |
5068 | } | |
5069 | else | |
5070 | error ("No default breakpoint address now."); | |
5071 | } | |
5072 | else | |
5073 | { | |
5074 | addr_string = (char *) xmalloc (strlen (arg) + 1); | |
5075 | strcpy (addr_string, arg); | |
5076 | } | |
5077 | ||
5078 | if (if_arg) | |
5079 | { | |
5080 | extra_args = arg; | |
c5aa993b JM |
5081 | extra_args_len = strlen (arg); |
5082 | } | |
5083 | else if (arg) | |
5084 | { | |
5085 | /* get the stuff after the function name or address */ | |
5086 | extra_args = strchr (arg, ' '); | |
5087 | if (extra_args) | |
5088 | { | |
5089 | extra_args++; | |
5090 | extra_args_len = strlen (extra_args); | |
5091 | } | |
c906108c | 5092 | } |
c906108c SS |
5093 | |
5094 | sals.sals = NULL; | |
5095 | sals.nelts = 0; | |
5096 | ||
c5aa993b JM |
5097 | beg_addr_string = addr_string; |
5098 | sals = decode_line_1 (&addr_string, 1, (struct symtab *) NULL, 0, | |
5099 | (char ***) NULL); | |
c906108c | 5100 | |
b8c9b27d KB |
5101 | xfree (beg_addr_string); |
5102 | old_chain = make_cleanup (xfree, sals.sals); | |
c906108c SS |
5103 | for (i = 0; (i < sals.nelts); i++) |
5104 | { | |
5105 | sal = sals.sals[i]; | |
c5aa993b | 5106 | if (find_pc_partial_function (sal.pc, (char **) NULL, &low, &high)) |
c906108c SS |
5107 | { |
5108 | break_string = (char *) xmalloc (extra_args_len + 26); | |
5109 | if (extra_args_len) | |
d4f3574e | 5110 | sprintf (break_string, "*0x%s %s", paddr_nz (high), extra_args); |
c906108c | 5111 | else |
d4f3574e | 5112 | sprintf (break_string, "*0x%s", paddr_nz (high)); |
c906108c | 5113 | break_command_1 (break_string, flag, from_tty); |
b8c9b27d | 5114 | xfree (break_string); |
c906108c SS |
5115 | } |
5116 | else | |
5117 | error ("No function contains the specified address"); | |
5118 | } | |
5119 | if (sals.nelts > 1) | |
5120 | { | |
53a5351d JM |
5121 | warning ("Multiple breakpoints were set.\n"); |
5122 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 5123 | } |
c5aa993b | 5124 | do_cleanups (old_chain); |
c906108c SS |
5125 | } |
5126 | ||
5127 | ||
5128 | /* Helper function for break_command_1 and disassemble_command. */ | |
5129 | ||
5130 | void | |
fba45db2 | 5131 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5132 | { |
5133 | CORE_ADDR pc; | |
5134 | ||
5135 | if (sal->pc == 0 && sal->symtab != NULL) | |
5136 | { | |
5137 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
5138 | error ("No line %d in file \"%s\".", | |
5139 | sal->line, sal->symtab->filename); | |
5140 | sal->pc = pc; | |
5141 | } | |
5142 | ||
5143 | if (sal->section == 0 && sal->symtab != NULL) | |
5144 | { | |
5145 | struct blockvector *bv; | |
c5aa993b JM |
5146 | struct block *b; |
5147 | struct symbol *sym; | |
5148 | int index; | |
c906108c | 5149 | |
c5aa993b | 5150 | bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab); |
c906108c SS |
5151 | if (bv != NULL) |
5152 | { | |
c5aa993b | 5153 | b = BLOCKVECTOR_BLOCK (bv, index); |
c906108c SS |
5154 | sym = block_function (b); |
5155 | if (sym != NULL) | |
5156 | { | |
5157 | fixup_symbol_section (sym, sal->symtab->objfile); | |
5158 | sal->section = SYMBOL_BFD_SECTION (sym); | |
5159 | } | |
5160 | else | |
5161 | { | |
5162 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5163 | have to look harder. This case can be executed if we have |
5164 | line numbers but no functions (as can happen in assembly | |
5165 | source). */ | |
c906108c | 5166 | |
c5aa993b | 5167 | struct minimal_symbol *msym; |
c906108c SS |
5168 | |
5169 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5170 | if (msym) | |
5171 | sal->section = SYMBOL_BFD_SECTION (msym); | |
5172 | } | |
5173 | } | |
5174 | } | |
5175 | } | |
5176 | ||
5177 | void | |
fba45db2 | 5178 | break_command (char *arg, int from_tty) |
c906108c SS |
5179 | { |
5180 | break_command_1 (arg, 0, from_tty); | |
5181 | } | |
5182 | ||
7a292a7a | 5183 | static void |
fba45db2 | 5184 | break_at_finish_command (char *arg, int from_tty) |
c906108c SS |
5185 | { |
5186 | break_at_finish_command_1 (arg, 0, from_tty); | |
5187 | } | |
5188 | ||
7a292a7a | 5189 | static void |
fba45db2 | 5190 | break_at_finish_at_depth_command (char *arg, int from_tty) |
c906108c SS |
5191 | { |
5192 | break_at_finish_at_depth_command_1 (arg, 0, from_tty); | |
5193 | } | |
5194 | ||
5195 | void | |
fba45db2 | 5196 | tbreak_command (char *arg, int from_tty) |
c906108c SS |
5197 | { |
5198 | break_command_1 (arg, BP_TEMPFLAG, from_tty); | |
5199 | } | |
5200 | ||
7a292a7a | 5201 | static void |
fba45db2 | 5202 | tbreak_at_finish_command (char *arg, int from_tty) |
c906108c SS |
5203 | { |
5204 | break_at_finish_command_1 (arg, BP_TEMPFLAG, from_tty); | |
5205 | } | |
5206 | ||
5207 | static void | |
fba45db2 | 5208 | hbreak_command (char *arg, int from_tty) |
c906108c SS |
5209 | { |
5210 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); | |
5211 | } | |
5212 | ||
5213 | static void | |
fba45db2 | 5214 | thbreak_command (char *arg, int from_tty) |
c906108c SS |
5215 | { |
5216 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); | |
5217 | } | |
5218 | ||
5219 | static void | |
fba45db2 | 5220 | stop_command (char *arg, int from_tty) |
c906108c SS |
5221 | { |
5222 | printf_filtered ("Specify the type of breakpoint to set.\n\ | |
5223 | Usage: stop in <function | address>\n\ | |
5224 | stop at <line>\n"); | |
5225 | } | |
5226 | ||
5227 | static void | |
fba45db2 | 5228 | stopin_command (char *arg, int from_tty) |
c906108c SS |
5229 | { |
5230 | int badInput = 0; | |
5231 | ||
c5aa993b | 5232 | if (arg == (char *) NULL) |
c906108c SS |
5233 | badInput = 1; |
5234 | else if (*arg != '*') | |
5235 | { | |
5236 | char *argptr = arg; | |
5237 | int hasColon = 0; | |
5238 | ||
53a5351d JM |
5239 | /* look for a ':'. If this is a line number specification, then |
5240 | say it is bad, otherwise, it should be an address or | |
5241 | function/method name */ | |
c906108c | 5242 | while (*argptr && !hasColon) |
c5aa993b JM |
5243 | { |
5244 | hasColon = (*argptr == ':'); | |
5245 | argptr++; | |
5246 | } | |
c906108c SS |
5247 | |
5248 | if (hasColon) | |
c5aa993b | 5249 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5250 | else |
c5aa993b | 5251 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5252 | } |
5253 | ||
5254 | if (badInput) | |
c5aa993b | 5255 | printf_filtered ("Usage: stop in <function | address>\n"); |
c906108c SS |
5256 | else |
5257 | break_command_1 (arg, 0, from_tty); | |
5258 | } | |
5259 | ||
5260 | static void | |
fba45db2 | 5261 | stopat_command (char *arg, int from_tty) |
c906108c SS |
5262 | { |
5263 | int badInput = 0; | |
5264 | ||
c5aa993b | 5265 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5266 | badInput = 1; |
5267 | else | |
5268 | { | |
5269 | char *argptr = arg; | |
5270 | int hasColon = 0; | |
5271 | ||
5272 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5273 | it is probably a line number. */ |
c906108c | 5274 | while (*argptr && !hasColon) |
c5aa993b JM |
5275 | { |
5276 | hasColon = (*argptr == ':'); | |
5277 | argptr++; | |
5278 | } | |
c906108c SS |
5279 | |
5280 | if (hasColon) | |
c5aa993b | 5281 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5282 | else |
c5aa993b | 5283 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5284 | } |
5285 | ||
5286 | if (badInput) | |
c5aa993b | 5287 | printf_filtered ("Usage: stop at <line>\n"); |
c906108c SS |
5288 | else |
5289 | break_command_1 (arg, 0, from_tty); | |
5290 | } | |
5291 | ||
5292 | /* ARGSUSED */ | |
53a5351d JM |
5293 | /* accessflag: hw_write: watch write, |
5294 | hw_read: watch read, | |
5295 | hw_access: watch access (read or write) */ | |
c906108c | 5296 | static void |
fba45db2 | 5297 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c SS |
5298 | { |
5299 | struct breakpoint *b; | |
5300 | struct symtab_and_line sal; | |
5301 | struct expression *exp; | |
5302 | struct block *exp_valid_block; | |
5303 | struct value *val, *mark; | |
5304 | struct frame_info *frame; | |
5305 | struct frame_info *prev_frame = NULL; | |
5306 | char *exp_start = NULL; | |
5307 | char *exp_end = NULL; | |
5308 | char *tok, *end_tok; | |
5309 | int toklen; | |
5310 | char *cond_start = NULL; | |
5311 | char *cond_end = NULL; | |
5312 | struct expression *cond = NULL; | |
5313 | int i, other_type_used, target_resources_ok = 0; | |
5314 | enum bptype bp_type; | |
5315 | int mem_cnt = 0; | |
5316 | ||
c5aa993b JM |
5317 | INIT_SAL (&sal); /* initialize to zeroes */ |
5318 | ||
c906108c SS |
5319 | /* Parse arguments. */ |
5320 | innermost_block = NULL; | |
5321 | exp_start = arg; | |
5322 | exp = parse_exp_1 (&arg, 0, 0); | |
5323 | exp_end = arg; | |
5324 | exp_valid_block = innermost_block; | |
5325 | mark = value_mark (); | |
5326 | val = evaluate_expression (exp); | |
5327 | release_value (val); | |
5328 | if (VALUE_LAZY (val)) | |
5329 | value_fetch_lazy (val); | |
5330 | ||
5331 | tok = arg; | |
5332 | while (*tok == ' ' || *tok == '\t') | |
5333 | tok++; | |
5334 | end_tok = tok; | |
5335 | ||
5336 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5337 | end_tok++; | |
5338 | ||
5339 | toklen = end_tok - tok; | |
5340 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5341 | { | |
5342 | tok = cond_start = end_tok + 1; | |
5343 | cond = parse_exp_1 (&tok, 0, 0); | |
5344 | cond_end = tok; | |
5345 | } | |
5346 | if (*tok) | |
c5aa993b | 5347 | error ("Junk at end of command."); |
c906108c | 5348 | |
53a5351d | 5349 | if (accessflag == hw_read) |
c5aa993b | 5350 | bp_type = bp_read_watchpoint; |
53a5351d | 5351 | else if (accessflag == hw_access) |
c5aa993b JM |
5352 | bp_type = bp_access_watchpoint; |
5353 | else | |
5354 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
5355 | |
5356 | mem_cnt = can_use_hardware_watchpoint (val); | |
5357 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
5358 | error ("Expression cannot be implemented with read/access watchpoint."); | |
c5aa993b JM |
5359 | if (mem_cnt != 0) |
5360 | { | |
5361 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
5362 | target_resources_ok = |
5363 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
5364 | other_type_used); | |
c5aa993b | 5365 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
53a5351d JM |
5366 | error ("Target does not support this type of hardware watchpoint."); |
5367 | ||
c5aa993b | 5368 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
53a5351d | 5369 | error ("Target can only support one kind of HW watchpoint at a time."); |
c5aa993b | 5370 | } |
c906108c SS |
5371 | |
5372 | #if defined(HPUXHPPA) | |
c5aa993b | 5373 | /* On HP-UX if you set a h/w |
c906108c SS |
5374 | watchpoint before the "run" command, the inferior dies with a e.g., |
5375 | SIGILL once you start it. I initially believed this was due to a | |
5376 | bad interaction between page protection traps and the initial | |
5377 | startup sequence by the dynamic linker. | |
5378 | ||
5379 | However, I tried avoiding that by having HP-UX's implementation of | |
39f77062 | 5380 | TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_ptid |
c906108c SS |
5381 | yet, which forced slow watches before a "run" or "attach", and it |
5382 | still fails somewhere in the startup code. | |
5383 | ||
5384 | Until I figure out what's happening, I'm disallowing watches altogether | |
5385 | before the "run" or "attach" command. We'll tell the user they must | |
5386 | set watches after getting the program started. */ | |
c5aa993b | 5387 | if (!target_has_execution) |
c906108c SS |
5388 | { |
5389 | warning ("can't do that without a running program; try \"break main\", \"run\" first"); | |
5390 | return; | |
5391 | } | |
5392 | #endif /* HPUXHPPA */ | |
c5aa993b | 5393 | |
4d28f7a8 KB |
5394 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
5395 | watchpoint could not be set. */ | |
5396 | if (!mem_cnt || target_resources_ok <= 0) | |
5397 | bp_type = bp_watchpoint; | |
5398 | ||
c906108c | 5399 | /* Now set up the breakpoint. */ |
4d28f7a8 | 5400 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
5401 | set_breakpoint_count (breakpoint_count + 1); |
5402 | b->number = breakpoint_count; | |
5403 | b->disposition = donttouch; | |
5404 | b->exp = exp; | |
5405 | b->exp_valid_block = exp_valid_block; | |
5406 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
5407 | b->val = val; | |
5408 | b->cond = cond; | |
5409 | if (cond_start) | |
5410 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
5411 | else | |
5412 | b->cond_string = 0; | |
c5aa993b | 5413 | |
c906108c SS |
5414 | frame = block_innermost_frame (exp_valid_block); |
5415 | if (frame) | |
5416 | { | |
5417 | prev_frame = get_prev_frame (frame); | |
5418 | b->watchpoint_frame = frame->frame; | |
5419 | } | |
5420 | else | |
c5aa993b | 5421 | b->watchpoint_frame = (CORE_ADDR) 0; |
c906108c | 5422 | |
c906108c SS |
5423 | /* If the expression is "local", then set up a "watchpoint scope" |
5424 | breakpoint at the point where we've left the scope of the watchpoint | |
5425 | expression. */ | |
5426 | if (innermost_block) | |
5427 | { | |
5428 | if (prev_frame) | |
5429 | { | |
5430 | struct breakpoint *scope_breakpoint; | |
5431 | struct symtab_and_line scope_sal; | |
5432 | ||
5433 | INIT_SAL (&scope_sal); /* initialize to zeroes */ | |
c5aa993b | 5434 | scope_sal.pc = get_frame_pc (prev_frame); |
c906108c SS |
5435 | scope_sal.section = find_pc_overlay (scope_sal.pc); |
5436 | ||
4d28f7a8 KB |
5437 | scope_breakpoint = set_raw_breakpoint (scope_sal, |
5438 | bp_watchpoint_scope); | |
c906108c SS |
5439 | set_breakpoint_count (breakpoint_count + 1); |
5440 | scope_breakpoint->number = breakpoint_count; | |
5441 | ||
c906108c SS |
5442 | scope_breakpoint->enable = enabled; |
5443 | ||
5444 | /* Automatically delete the breakpoint when it hits. */ | |
5445 | scope_breakpoint->disposition = del; | |
5446 | ||
5447 | /* Only break in the proper frame (help with recursion). */ | |
5448 | scope_breakpoint->frame = prev_frame->frame; | |
5449 | ||
5450 | /* Set the address at which we will stop. */ | |
5451 | scope_breakpoint->address = get_frame_pc (prev_frame); | |
5452 | ||
5453 | /* The scope breakpoint is related to the watchpoint. We | |
5454 | will need to act on them together. */ | |
5455 | b->related_breakpoint = scope_breakpoint; | |
5456 | } | |
5457 | } | |
5458 | value_free_to_mark (mark); | |
5459 | mention (b); | |
5460 | } | |
5461 | ||
5462 | /* Return count of locations need to be watched and can be handled | |
5463 | in hardware. If the watchpoint can not be handled | |
5464 | in hardware return zero. */ | |
5465 | ||
5466 | #if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT) | |
53a5351d JM |
5467 | #define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(BYTE_SIZE) \ |
5468 | ((BYTE_SIZE) <= (REGISTER_SIZE)) | |
5469 | #endif | |
5470 | ||
5471 | #if !defined(TARGET_REGION_OK_FOR_HW_WATCHPOINT) | |
5472 | #define TARGET_REGION_OK_FOR_HW_WATCHPOINT(ADDR,LEN) \ | |
6ab3a9c9 | 5473 | (TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(LEN)) |
c906108c SS |
5474 | #endif |
5475 | ||
5476 | static int | |
fba45db2 | 5477 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
5478 | { |
5479 | int found_memory_cnt = 0; | |
2e70b7b9 | 5480 | struct value *head = v; |
c906108c SS |
5481 | |
5482 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 5483 | if (!can_use_hw_watchpoints) |
c906108c | 5484 | return 0; |
c5aa993b | 5485 | |
5c44784c JM |
5486 | /* Make sure that the value of the expression depends only upon |
5487 | memory contents, and values computed from them within GDB. If we | |
5488 | find any register references or function calls, we can't use a | |
5489 | hardware watchpoint. | |
5490 | ||
5491 | The idea here is that evaluating an expression generates a series | |
5492 | of values, one holding the value of every subexpression. (The | |
5493 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
5494 | a*b+c.) GDB's values hold almost enough information to establish | |
5495 | the criteria given above --- they identify memory lvalues, | |
5496 | register lvalues, computed values, etcetera. So we can evaluate | |
5497 | the expression, and then scan the chain of values that leaves | |
5498 | behind to decide whether we can detect any possible change to the | |
5499 | expression's final value using only hardware watchpoints. | |
5500 | ||
5501 | However, I don't think that the values returned by inferior | |
5502 | function calls are special in any way. So this function may not | |
5503 | notice that an expression involving an inferior function call | |
5504 | can't be watched with hardware watchpoints. FIXME. */ | |
c5aa993b | 5505 | for (; v; v = v->next) |
c906108c | 5506 | { |
5c44784c | 5507 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 5508 | { |
5c44784c JM |
5509 | if (VALUE_LAZY (v)) |
5510 | /* A lazy memory lvalue is one that GDB never needed to fetch; | |
5511 | we either just used its address (e.g., `a' in `a.b') or | |
5512 | we never needed it at all (e.g., `a' in `a,b'). */ | |
5513 | ; | |
53a5351d | 5514 | else |
5c44784c JM |
5515 | { |
5516 | /* Ahh, memory we actually used! Check if we can cover | |
5517 | it with hardware watchpoints. */ | |
2e70b7b9 MS |
5518 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
5519 | ||
5520 | /* We only watch structs and arrays if user asked for it | |
5521 | explicitly, never if they just happen to appear in a | |
5522 | middle of some value chain. */ | |
5523 | if (v == head | |
5524 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
5525 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
5526 | { | |
5527 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
5528 | int len = TYPE_LENGTH (VALUE_TYPE (v)); | |
5529 | ||
5530 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
5531 | return 0; | |
5532 | else | |
5533 | found_memory_cnt++; | |
5534 | } | |
5c44784c | 5535 | } |
c5aa993b | 5536 | } |
c906108c | 5537 | else if (v->lval != not_lval && v->modifiable == 0) |
53a5351d JM |
5538 | return 0; /* ??? What does this represent? */ |
5539 | else if (v->lval == lval_register) | |
5540 | return 0; /* cannot watch a register with a HW watchpoint */ | |
c906108c SS |
5541 | } |
5542 | ||
5543 | /* The expression itself looks suitable for using a hardware | |
5544 | watchpoint, but give the target machine a chance to reject it. */ | |
5545 | return found_memory_cnt; | |
5546 | } | |
5547 | ||
8b93c638 JM |
5548 | #ifdef UI_OUT |
5549 | void | |
fba45db2 | 5550 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5551 | { |
5552 | watch_command (arg, from_tty); | |
5553 | } | |
5554 | #endif | |
c5aa993b | 5555 | static void |
fba45db2 | 5556 | watch_command (char *arg, int from_tty) |
c906108c | 5557 | { |
53a5351d | 5558 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
5559 | } |
5560 | ||
8b93c638 JM |
5561 | #ifdef UI_OUT |
5562 | void | |
fba45db2 | 5563 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5564 | { |
5565 | rwatch_command (arg, from_tty); | |
5566 | } | |
5567 | #endif | |
c5aa993b | 5568 | static void |
fba45db2 | 5569 | rwatch_command (char *arg, int from_tty) |
c906108c | 5570 | { |
53a5351d | 5571 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
5572 | } |
5573 | ||
8b93c638 JM |
5574 | #ifdef UI_OUT |
5575 | void | |
fba45db2 | 5576 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5577 | { |
5578 | awatch_command (arg, from_tty); | |
5579 | } | |
5580 | #endif | |
c5aa993b | 5581 | static void |
fba45db2 | 5582 | awatch_command (char *arg, int from_tty) |
c906108c | 5583 | { |
53a5351d | 5584 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 5585 | } |
c906108c | 5586 | \f |
c5aa993b | 5587 | |
43ff13b4 | 5588 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
5589 | because it uses the mechanisms of breakpoints. */ |
5590 | ||
43ff13b4 JM |
5591 | /* This function is called by fetch_inferior_event via the |
5592 | cmd_continuation pointer, to complete the until command. It takes | |
5593 | care of cleaning up the temporary breakpoints set up by the until | |
5594 | command. */ | |
c2c6d25f JM |
5595 | static void |
5596 | until_break_command_continuation (struct continuation_arg *arg) | |
43ff13b4 | 5597 | { |
0d06e24b JM |
5598 | struct cleanup *cleanups; |
5599 | ||
57e687d9 | 5600 | cleanups = (struct cleanup *) arg->data.pointer; |
0d06e24b | 5601 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
5602 | } |
5603 | ||
c906108c SS |
5604 | /* ARGSUSED */ |
5605 | void | |
fba45db2 | 5606 | until_break_command (char *arg, int from_tty) |
c906108c SS |
5607 | { |
5608 | struct symtabs_and_lines sals; | |
5609 | struct symtab_and_line sal; | |
5610 | struct frame_info *prev_frame = get_prev_frame (selected_frame); | |
5611 | struct breakpoint *breakpoint; | |
5612 | struct cleanup *old_chain; | |
0d06e24b JM |
5613 | struct continuation_arg *arg1; |
5614 | ||
c906108c SS |
5615 | |
5616 | clear_proceed_status (); | |
5617 | ||
5618 | /* Set a breakpoint where the user wants it and at return from | |
5619 | this function */ | |
c5aa993b | 5620 | |
c906108c SS |
5621 | if (default_breakpoint_valid) |
5622 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
c5aa993b | 5623 | default_breakpoint_line, (char ***) NULL); |
c906108c | 5624 | else |
53a5351d JM |
5625 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
5626 | 0, (char ***) NULL); | |
c5aa993b | 5627 | |
c906108c SS |
5628 | if (sals.nelts != 1) |
5629 | error ("Couldn't get information on specified line."); | |
c5aa993b | 5630 | |
c906108c | 5631 | sal = sals.sals[0]; |
b8c9b27d | 5632 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 5633 | |
c906108c SS |
5634 | if (*arg) |
5635 | error ("Junk at end of arguments."); | |
c5aa993b | 5636 | |
c906108c | 5637 | resolve_sal_pc (&sal); |
c5aa993b | 5638 | |
c906108c | 5639 | breakpoint = set_momentary_breakpoint (sal, selected_frame, bp_until); |
c5aa993b | 5640 | |
6426a772 | 5641 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 5642 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 5643 | else |
4d6140d9 | 5644 | old_chain = make_exec_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 JM |
5645 | |
5646 | /* If we are running asynchronously, and the target supports async | |
5647 | execution, we are not waiting for the target to stop, in the call | |
5648 | tp proceed, below. This means that we cannot delete the | |
5649 | brekpoints until the target has actually stopped. The only place | |
5650 | where we get a chance to do that is in fetch_inferior_event, so | |
5651 | we must set things up for that. */ | |
5652 | ||
6426a772 | 5653 | if (event_loop_p && target_can_async_p ()) |
43ff13b4 | 5654 | { |
0d06e24b JM |
5655 | /* In this case the arg for the continuation is just the point |
5656 | in the exec_cleanups chain from where to start doing | |
5657 | cleanups, because all the continuation does is the cleanups in | |
5658 | the exec_cleanup_chain. */ | |
5659 | arg1 = | |
5660 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
57e687d9 MS |
5661 | arg1->next = NULL; |
5662 | arg1->data.pointer = old_chain; | |
0d06e24b JM |
5663 | |
5664 | add_continuation (until_break_command_continuation, arg1); | |
43ff13b4 | 5665 | } |
c906108c SS |
5666 | |
5667 | /* Keep within the current frame */ | |
c5aa993b | 5668 | |
c906108c SS |
5669 | if (prev_frame) |
5670 | { | |
5671 | sal = find_pc_line (prev_frame->pc, 0); | |
5672 | sal.pc = prev_frame->pc; | |
5673 | breakpoint = set_momentary_breakpoint (sal, prev_frame, bp_until); | |
6426a772 | 5674 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 5675 | make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 5676 | else |
4d6140d9 | 5677 | make_exec_cleanup_delete_breakpoint (breakpoint); |
c906108c | 5678 | } |
c5aa993b | 5679 | |
c906108c | 5680 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
43ff13b4 JM |
5681 | /* Do the cleanups now, anly if we are not running asynchronously, |
5682 | of if we are, but the target is still synchronous. */ | |
6426a772 | 5683 | if (!event_loop_p || !target_can_async_p ()) |
c5aa993b | 5684 | do_cleanups (old_chain); |
c906108c SS |
5685 | } |
5686 | \f | |
5687 | #if 0 | |
5688 | /* These aren't used; I don't konw what they were for. */ | |
5689 | /* Set a breakpoint at the catch clause for NAME. */ | |
5690 | static int | |
fba45db2 | 5691 | catch_breakpoint (char *name) |
c906108c SS |
5692 | { |
5693 | } | |
5694 | ||
5695 | static int | |
fba45db2 | 5696 | disable_catch_breakpoint (void) |
c906108c SS |
5697 | { |
5698 | } | |
5699 | ||
5700 | static int | |
fba45db2 | 5701 | delete_catch_breakpoint (void) |
c906108c SS |
5702 | { |
5703 | } | |
5704 | ||
5705 | static int | |
fba45db2 | 5706 | enable_catch_breakpoint (void) |
c906108c SS |
5707 | { |
5708 | } | |
5709 | #endif /* 0 */ | |
5710 | ||
5711 | struct sal_chain | |
5712 | { | |
5713 | struct sal_chain *next; | |
5714 | struct symtab_and_line sal; | |
5715 | }; | |
5716 | ||
7a292a7a | 5717 | #if 0 |
c906108c SS |
5718 | /* Not really used -- invocation in handle_gnu_4_16_catch_command |
5719 | had been commented out in the v.4.16 sources, and stays | |
5720 | disabled there now because "catch NAME" syntax isn't allowed. | |
5721 | pai/1997-07-11 */ | |
5722 | /* This isn't used; I don't know what it was for. */ | |
5723 | /* For each catch clause identified in ARGS, run FUNCTION | |
5724 | with that clause as an argument. */ | |
5725 | static struct symtabs_and_lines | |
831662b3 | 5726 | map_catch_names (char *args, int (*function) ()) |
c906108c SS |
5727 | { |
5728 | register char *p = args; | |
5729 | register char *p1; | |
5730 | struct symtabs_and_lines sals; | |
5731 | #if 0 | |
5732 | struct sal_chain *sal_chain = 0; | |
5733 | #endif | |
5734 | ||
5735 | if (p == 0) | |
5736 | error_no_arg ("one or more catch names"); | |
5737 | ||
5738 | sals.nelts = 0; | |
5739 | sals.sals = NULL; | |
5740 | ||
5741 | while (*p) | |
5742 | { | |
5743 | p1 = p; | |
5744 | /* Don't swallow conditional part. */ | |
5745 | if (p1[0] == 'i' && p1[1] == 'f' | |
5746 | && (p1[2] == ' ' || p1[2] == '\t')) | |
5747 | break; | |
5748 | ||
5749 | if (isalpha (*p1)) | |
5750 | { | |
5751 | p1++; | |
5752 | while (isalnum (*p1) || *p1 == '_' || *p1 == '$') | |
5753 | p1++; | |
5754 | } | |
5755 | ||
5756 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
5757 | error ("Arguments must be catch names."); | |
5758 | ||
5759 | *p1 = 0; | |
5760 | #if 0 | |
5761 | if (function (p)) | |
5762 | { | |
5763 | struct sal_chain *next = (struct sal_chain *) | |
c5aa993b | 5764 | alloca (sizeof (struct sal_chain)); |
c906108c SS |
5765 | next->next = sal_chain; |
5766 | next->sal = get_catch_sal (p); | |
5767 | sal_chain = next; | |
5768 | goto win; | |
5769 | } | |
5770 | #endif | |
5771 | printf_unfiltered ("No catch clause for exception %s.\n", p); | |
5772 | #if 0 | |
5773 | win: | |
5774 | #endif | |
5775 | p = p1; | |
c5aa993b JM |
5776 | while (*p == ' ' || *p == '\t') |
5777 | p++; | |
c906108c SS |
5778 | } |
5779 | } | |
7a292a7a | 5780 | #endif |
c906108c SS |
5781 | |
5782 | /* This shares a lot of code with `print_frame_label_vars' from stack.c. */ | |
5783 | ||
5784 | static struct symtabs_and_lines | |
fba45db2 | 5785 | get_catch_sals (int this_level_only) |
c906108c SS |
5786 | { |
5787 | register struct blockvector *bl; | |
5788 | register struct block *block; | |
5789 | int index, have_default = 0; | |
5790 | CORE_ADDR pc; | |
5791 | struct symtabs_and_lines sals; | |
5792 | struct sal_chain *sal_chain = 0; | |
5793 | char *blocks_searched; | |
5794 | ||
5795 | /* Not sure whether an error message is always the correct response, | |
5796 | but it's better than a core dump. */ | |
5797 | if (selected_frame == NULL) | |
5798 | error ("No selected frame."); | |
5799 | block = get_frame_block (selected_frame); | |
5800 | pc = selected_frame->pc; | |
5801 | ||
5802 | sals.nelts = 0; | |
5803 | sals.sals = NULL; | |
5804 | ||
5805 | if (block == 0) | |
5806 | error ("No symbol table info available.\n"); | |
5807 | ||
5808 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
5809 | blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
5810 | memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
5811 | ||
5812 | while (block != 0) | |
5813 | { | |
5814 | CORE_ADDR end = BLOCK_END (block) - 4; | |
5815 | int last_index; | |
5816 | ||
5817 | if (bl != blockvector_for_pc (end, &index)) | |
5818 | error ("blockvector blotch"); | |
5819 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
5820 | error ("blockvector botch"); | |
5821 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
5822 | index += 1; | |
5823 | ||
5824 | /* Don't print out blocks that have gone by. */ | |
5825 | while (index < last_index | |
5826 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
5827 | index++; | |
5828 | ||
5829 | while (index < last_index | |
5830 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
5831 | { | |
5832 | if (blocks_searched[index] == 0) | |
5833 | { | |
5834 | struct block *b = BLOCKVECTOR_BLOCK (bl, index); | |
5835 | int nsyms; | |
5836 | register int i; | |
5837 | register struct symbol *sym; | |
5838 | ||
5839 | nsyms = BLOCK_NSYMS (b); | |
5840 | ||
5841 | for (i = 0; i < nsyms; i++) | |
5842 | { | |
5843 | sym = BLOCK_SYM (b, i); | |
5844 | if (STREQ (SYMBOL_NAME (sym), "default")) | |
5845 | { | |
5846 | if (have_default) | |
5847 | continue; | |
5848 | have_default = 1; | |
5849 | } | |
5850 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
5851 | { | |
5852 | struct sal_chain *next = (struct sal_chain *) | |
c5aa993b | 5853 | alloca (sizeof (struct sal_chain)); |
c906108c | 5854 | next->next = sal_chain; |
53a5351d JM |
5855 | next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), |
5856 | 0); | |
c906108c SS |
5857 | sal_chain = next; |
5858 | } | |
5859 | } | |
5860 | blocks_searched[index] = 1; | |
5861 | } | |
5862 | index++; | |
5863 | } | |
5864 | if (have_default) | |
5865 | break; | |
5866 | if (sal_chain && this_level_only) | |
5867 | break; | |
5868 | ||
5869 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
5870 | Don't continue to its superblock, the block of |
5871 | per-file symbols. */ | |
c906108c SS |
5872 | if (BLOCK_FUNCTION (block)) |
5873 | break; | |
5874 | block = BLOCK_SUPERBLOCK (block); | |
5875 | } | |
5876 | ||
5877 | if (sal_chain) | |
5878 | { | |
5879 | struct sal_chain *tmp_chain; | |
5880 | ||
5881 | /* Count the number of entries. */ | |
5882 | for (index = 0, tmp_chain = sal_chain; tmp_chain; | |
5883 | tmp_chain = tmp_chain->next) | |
5884 | index++; | |
5885 | ||
5886 | sals.nelts = index; | |
5887 | sals.sals = (struct symtab_and_line *) | |
5888 | xmalloc (index * sizeof (struct symtab_and_line)); | |
5889 | for (index = 0; sal_chain; sal_chain = sal_chain->next, index++) | |
5890 | sals.sals[index] = sal_chain->sal; | |
5891 | } | |
5892 | ||
5893 | return sals; | |
5894 | } | |
5895 | ||
5896 | static void | |
fba45db2 | 5897 | ep_skip_leading_whitespace (char **s) |
c906108c | 5898 | { |
c5aa993b JM |
5899 | if ((s == NULL) || (*s == NULL)) |
5900 | return; | |
5901 | while (isspace (**s)) | |
5902 | *s += 1; | |
c906108c | 5903 | } |
c5aa993b | 5904 | |
c906108c SS |
5905 | /* This function examines a string, and attempts to find a token |
5906 | that might be an event name in the leading characters. If a | |
5907 | possible match is found, a pointer to the last character of | |
5908 | the token is returned. Else, NULL is returned. */ | |
53a5351d | 5909 | |
c906108c | 5910 | static char * |
fba45db2 | 5911 | ep_find_event_name_end (char *arg) |
c906108c | 5912 | { |
c5aa993b JM |
5913 | char *s = arg; |
5914 | char *event_name_end = NULL; | |
5915 | ||
c906108c SS |
5916 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ |
5917 | if (arg == NULL) | |
5918 | return NULL; | |
c5aa993b | 5919 | |
c906108c | 5920 | /* We break out of the loop when we find a token delimiter. |
c5aa993b JM |
5921 | Basically, we're looking for alphanumerics and underscores; |
5922 | anything else delimites the token. */ | |
c906108c SS |
5923 | while (*s != '\0') |
5924 | { | |
c5aa993b JM |
5925 | if (!isalnum (*s) && (*s != '_')) |
5926 | break; | |
c906108c SS |
5927 | event_name_end = s; |
5928 | s++; | |
5929 | } | |
c5aa993b | 5930 | |
c906108c SS |
5931 | return event_name_end; |
5932 | } | |
5933 | ||
c5aa993b | 5934 | |
c906108c SS |
5935 | /* This function attempts to parse an optional "if <cond>" clause |
5936 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 5937 | |
c906108c SS |
5938 | Else, it returns a pointer to the condition string. (It does not |
5939 | attempt to evaluate the string against a particular block.) And, | |
5940 | it updates arg to point to the first character following the parsed | |
5941 | if clause in the arg string. */ | |
53a5351d | 5942 | |
c906108c | 5943 | static char * |
fba45db2 | 5944 | ep_parse_optional_if_clause (char **arg) |
c906108c | 5945 | { |
c5aa993b JM |
5946 | char *cond_string; |
5947 | ||
5948 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 5949 | return NULL; |
c5aa993b | 5950 | |
c906108c SS |
5951 | /* Skip the "if" keyword. */ |
5952 | (*arg) += 2; | |
c5aa993b | 5953 | |
c906108c SS |
5954 | /* Skip any extra leading whitespace, and record the start of the |
5955 | condition string. */ | |
5956 | ep_skip_leading_whitespace (arg); | |
5957 | cond_string = *arg; | |
c5aa993b | 5958 | |
c906108c SS |
5959 | /* Assume that the condition occupies the remainder of the arg string. */ |
5960 | (*arg) += strlen (cond_string); | |
c5aa993b | 5961 | |
c906108c SS |
5962 | return cond_string; |
5963 | } | |
c5aa993b | 5964 | |
c906108c SS |
5965 | /* This function attempts to parse an optional filename from the arg |
5966 | string. If one is not found, it returns NULL. | |
c5aa993b | 5967 | |
c906108c SS |
5968 | Else, it returns a pointer to the parsed filename. (This function |
5969 | makes no attempt to verify that a file of that name exists, or is | |
5970 | accessible.) And, it updates arg to point to the first character | |
5971 | following the parsed filename in the arg string. | |
c5aa993b | 5972 | |
c906108c SS |
5973 | Note that clients needing to preserve the returned filename for |
5974 | future access should copy it to their own buffers. */ | |
5975 | static char * | |
fba45db2 | 5976 | ep_parse_optional_filename (char **arg) |
c906108c | 5977 | { |
c5aa993b JM |
5978 | static char filename[1024]; |
5979 | char *arg_p = *arg; | |
5980 | int i; | |
5981 | char c; | |
5982 | ||
c906108c SS |
5983 | if ((*arg_p == '\0') || isspace (*arg_p)) |
5984 | return NULL; | |
c5aa993b JM |
5985 | |
5986 | for (i = 0;; i++) | |
c906108c SS |
5987 | { |
5988 | c = *arg_p; | |
5989 | if (isspace (c)) | |
c5aa993b | 5990 | c = '\0'; |
c906108c SS |
5991 | filename[i] = c; |
5992 | if (c == '\0') | |
c5aa993b | 5993 | break; |
c906108c SS |
5994 | arg_p++; |
5995 | } | |
5996 | *arg = arg_p; | |
c5aa993b | 5997 | |
c906108c SS |
5998 | return filename; |
5999 | } | |
c5aa993b | 6000 | |
c906108c SS |
6001 | /* Commands to deal with catching events, such as signals, exceptions, |
6002 | process start/exit, etc. */ | |
c5aa993b JM |
6003 | |
6004 | typedef enum | |
6005 | { | |
6006 | catch_fork, catch_vfork | |
6007 | } | |
6008 | catch_fork_kind; | |
6009 | ||
e514a9d6 | 6010 | #if defined(CHILD_INSERT_FORK_CATCHPOINT) || defined(CHILD_INSERT_VFORK_CATCHPOINT) |
a14ed312 KB |
6011 | static void catch_fork_command_1 (catch_fork_kind fork_kind, |
6012 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 6013 | |
c906108c | 6014 | static void |
fba45db2 KB |
6015 | catch_fork_command_1 (catch_fork_kind fork_kind, char *arg, int tempflag, |
6016 | int from_tty) | |
c906108c | 6017 | { |
c5aa993b JM |
6018 | char *cond_string = NULL; |
6019 | ||
c906108c | 6020 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6021 | |
c906108c | 6022 | /* The allowed syntax is: |
c5aa993b JM |
6023 | catch [v]fork |
6024 | catch [v]fork if <cond> | |
6025 | ||
c906108c SS |
6026 | First, check if there's an if clause. */ |
6027 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6028 | |
c906108c SS |
6029 | if ((*arg != '\0') && !isspace (*arg)) |
6030 | error ("Junk at end of arguments."); | |
c5aa993b | 6031 | |
c906108c SS |
6032 | /* If this target supports it, create a fork or vfork catchpoint |
6033 | and enable reporting of such events. */ | |
c5aa993b JM |
6034 | switch (fork_kind) |
6035 | { | |
6036 | case catch_fork: | |
c906108c SS |
6037 | create_fork_event_catchpoint (tempflag, cond_string); |
6038 | break; | |
c5aa993b | 6039 | case catch_vfork: |
c906108c SS |
6040 | create_vfork_event_catchpoint (tempflag, cond_string); |
6041 | break; | |
c5aa993b | 6042 | default: |
c906108c SS |
6043 | error ("unsupported or unknown fork kind; cannot catch it"); |
6044 | break; | |
c5aa993b | 6045 | } |
c906108c | 6046 | } |
e514a9d6 | 6047 | #endif |
c906108c | 6048 | |
e514a9d6 | 6049 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) |
c906108c | 6050 | static void |
fba45db2 | 6051 | catch_exec_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6052 | { |
c5aa993b | 6053 | char *cond_string = NULL; |
c906108c SS |
6054 | |
6055 | ep_skip_leading_whitespace (&arg); | |
6056 | ||
6057 | /* The allowed syntax is: | |
c5aa993b JM |
6058 | catch exec |
6059 | catch exec if <cond> | |
c906108c SS |
6060 | |
6061 | First, check if there's an if clause. */ | |
6062 | cond_string = ep_parse_optional_if_clause (&arg); | |
6063 | ||
6064 | if ((*arg != '\0') && !isspace (*arg)) | |
6065 | error ("Junk at end of arguments."); | |
6066 | ||
6067 | /* If this target supports it, create an exec catchpoint | |
6068 | and enable reporting of such events. */ | |
6069 | create_exec_event_catchpoint (tempflag, cond_string); | |
6070 | } | |
e514a9d6 | 6071 | #endif |
c5aa993b | 6072 | |
c906108c SS |
6073 | #if defined(SOLIB_ADD) |
6074 | static void | |
fba45db2 | 6075 | catch_load_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6076 | { |
c5aa993b JM |
6077 | char *dll_pathname = NULL; |
6078 | char *cond_string = NULL; | |
6079 | ||
c906108c | 6080 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6081 | |
c906108c | 6082 | /* The allowed syntax is: |
c5aa993b JM |
6083 | catch load |
6084 | catch load if <cond> | |
6085 | catch load <filename> | |
6086 | catch load <filename> if <cond> | |
6087 | ||
c906108c SS |
6088 | The user is not allowed to specify the <filename> after an |
6089 | if clause. | |
c5aa993b | 6090 | |
c906108c | 6091 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6092 | |
c906108c SS |
6093 | First, check if there's an if clause. If so, then there |
6094 | cannot be a filename. */ | |
6095 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6096 | |
c906108c SS |
6097 | /* If there was an if clause, then there cannot be a filename. |
6098 | Else, there might be a filename and an if clause. */ | |
6099 | if (cond_string == NULL) | |
6100 | { | |
6101 | dll_pathname = ep_parse_optional_filename (&arg); | |
6102 | ep_skip_leading_whitespace (&arg); | |
6103 | cond_string = ep_parse_optional_if_clause (&arg); | |
6104 | } | |
c5aa993b | 6105 | |
c906108c SS |
6106 | if ((*arg != '\0') && !isspace (*arg)) |
6107 | error ("Junk at end of arguments."); | |
c5aa993b | 6108 | |
c906108c SS |
6109 | /* Create a load breakpoint that only triggers when a load of |
6110 | the specified dll (or any dll, if no pathname was specified) | |
6111 | occurs. */ | |
39f77062 | 6112 | SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6113 | dll_pathname, cond_string); |
c906108c | 6114 | } |
c5aa993b | 6115 | |
c906108c | 6116 | static void |
fba45db2 | 6117 | catch_unload_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6118 | { |
c5aa993b JM |
6119 | char *dll_pathname = NULL; |
6120 | char *cond_string = NULL; | |
6121 | ||
c906108c | 6122 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6123 | |
c906108c | 6124 | /* The allowed syntax is: |
c5aa993b JM |
6125 | catch unload |
6126 | catch unload if <cond> | |
6127 | catch unload <filename> | |
6128 | catch unload <filename> if <cond> | |
6129 | ||
c906108c SS |
6130 | The user is not allowed to specify the <filename> after an |
6131 | if clause. | |
c5aa993b | 6132 | |
c906108c | 6133 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6134 | |
c906108c SS |
6135 | First, check if there's an if clause. If so, then there |
6136 | cannot be a filename. */ | |
6137 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6138 | |
c906108c SS |
6139 | /* If there was an if clause, then there cannot be a filename. |
6140 | Else, there might be a filename and an if clause. */ | |
6141 | if (cond_string == NULL) | |
6142 | { | |
6143 | dll_pathname = ep_parse_optional_filename (&arg); | |
6144 | ep_skip_leading_whitespace (&arg); | |
6145 | cond_string = ep_parse_optional_if_clause (&arg); | |
6146 | } | |
c5aa993b | 6147 | |
c906108c SS |
6148 | if ((*arg != '\0') && !isspace (*arg)) |
6149 | error ("Junk at end of arguments."); | |
c5aa993b | 6150 | |
c906108c SS |
6151 | /* Create an unload breakpoint that only triggers when an unload of |
6152 | the specified dll (or any dll, if no pathname was specified) | |
6153 | occurs. */ | |
39f77062 | 6154 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6155 | dll_pathname, cond_string); |
c906108c SS |
6156 | } |
6157 | #endif /* SOLIB_ADD */ | |
6158 | ||
6159 | /* Commands to deal with catching exceptions. */ | |
6160 | ||
6161 | /* Set a breakpoint at the specified callback routine for an | |
c5aa993b | 6162 | exception event callback */ |
c906108c SS |
6163 | |
6164 | static void | |
fba45db2 KB |
6165 | create_exception_catchpoint (int tempflag, char *cond_string, |
6166 | enum exception_event_kind ex_event, | |
6167 | struct symtab_and_line *sal) | |
c906108c | 6168 | { |
c5aa993b | 6169 | struct breakpoint *b; |
c5aa993b | 6170 | int thread = -1; /* All threads. */ |
4d28f7a8 | 6171 | enum bptype bptype; |
c906108c | 6172 | |
c5aa993b | 6173 | if (!sal) /* no exception support? */ |
c906108c SS |
6174 | return; |
6175 | ||
c906108c SS |
6176 | switch (ex_event) |
6177 | { | |
c5aa993b | 6178 | case EX_EVENT_THROW: |
4d28f7a8 | 6179 | bptype = bp_catch_throw; |
c5aa993b JM |
6180 | break; |
6181 | case EX_EVENT_CATCH: | |
4d28f7a8 | 6182 | bptype = bp_catch_catch; |
c5aa993b JM |
6183 | break; |
6184 | default: /* error condition */ | |
c5aa993b | 6185 | error ("Internal error -- invalid catchpoint kind"); |
c906108c | 6186 | } |
4d28f7a8 KB |
6187 | |
6188 | b = set_raw_breakpoint (*sal, bptype); | |
6189 | set_breakpoint_count (breakpoint_count + 1); | |
6190 | b->number = breakpoint_count; | |
6191 | b->cond = NULL; | |
6192 | b->cond_string = (cond_string == NULL) ? | |
6193 | NULL : savestring (cond_string, strlen (cond_string)); | |
6194 | b->thread = thread; | |
6195 | b->addr_string = NULL; | |
6196 | b->enable = enabled; | |
6197 | b->disposition = tempflag ? del : donttouch; | |
c906108c SS |
6198 | mention (b); |
6199 | } | |
6200 | ||
c5aa993b | 6201 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6202 | |
6203 | static void | |
fba45db2 KB |
6204 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6205 | int tempflag, int from_tty) | |
c906108c | 6206 | { |
c5aa993b JM |
6207 | char *cond_string = NULL; |
6208 | struct symtab_and_line *sal = NULL; | |
6209 | ||
c906108c | 6210 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6211 | |
c906108c SS |
6212 | cond_string = ep_parse_optional_if_clause (&arg); |
6213 | ||
6214 | if ((*arg != '\0') && !isspace (*arg)) | |
6215 | error ("Junk at end of arguments."); | |
6216 | ||
6217 | if ((ex_event != EX_EVENT_THROW) && | |
6218 | (ex_event != EX_EVENT_CATCH)) | |
6219 | error ("Unsupported or unknown exception event; cannot catch it"); | |
6220 | ||
6221 | /* See if we can find a callback routine */ | |
6222 | sal = target_enable_exception_callback (ex_event, 1); | |
6223 | ||
c5aa993b | 6224 | if (sal) |
c906108c SS |
6225 | { |
6226 | /* We have callbacks from the runtime system for exceptions. | |
c5aa993b | 6227 | Set a breakpoint on the sal found, if no errors */ |
c906108c | 6228 | if (sal != (struct symtab_and_line *) -1) |
c5aa993b | 6229 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal); |
c906108c | 6230 | else |
53a5351d | 6231 | return; /* something went wrong with setting up callbacks */ |
c906108c | 6232 | } |
c5aa993b | 6233 | else |
c906108c SS |
6234 | { |
6235 | /* No callbacks from runtime system for exceptions. | |
6236 | Try GNU C++ exception breakpoints using labels in debug info. */ | |
6237 | if (ex_event == EX_EVENT_CATCH) | |
c5aa993b JM |
6238 | { |
6239 | handle_gnu_4_16_catch_command (arg, tempflag, from_tty); | |
6240 | } | |
c906108c | 6241 | else if (ex_event == EX_EVENT_THROW) |
c5aa993b JM |
6242 | { |
6243 | /* Set a breakpoint on __raise_exception () */ | |
6244 | ||
53a5351d JM |
6245 | warning ("Unsupported with this platform/compiler combination."); |
6246 | warning ("Perhaps you can achieve the effect you want by setting"); | |
6247 | warning ("a breakpoint on __raise_exception()."); | |
c5aa993b | 6248 | } |
c906108c SS |
6249 | } |
6250 | } | |
6251 | ||
6252 | /* Cover routine to allow wrapping target_enable_exception_catchpoints | |
6253 | inside a catch_errors */ | |
6254 | ||
6255 | static int | |
fba45db2 | 6256 | cover_target_enable_exception_callback (PTR arg) |
c906108c SS |
6257 | { |
6258 | args_for_catchpoint_enable *args = arg; | |
6259 | struct symtab_and_line *sal; | |
6260 | sal = target_enable_exception_callback (args->kind, args->enable); | |
6261 | if (sal == NULL) | |
6262 | return 0; | |
6263 | else if (sal == (struct symtab_and_line *) -1) | |
6264 | return -1; | |
6265 | else | |
c5aa993b | 6266 | return 1; /*is valid */ |
c906108c SS |
6267 | } |
6268 | ||
6269 | ||
6270 | ||
6271 | /* This is the original v.4.16 and earlier version of the | |
6272 | catch_command_1() function. Now that other flavours of "catch" | |
6273 | have been introduced, and since exception handling can be handled | |
6274 | in other ways (through target ops) also, this is used only for the | |
6275 | GNU C++ exception handling system. | |
6276 | Note: Only the "catch" flavour of GDB 4.16 is handled here. The | |
6277 | "catch NAME" is now no longer allowed in catch_command_1(). Also, | |
6278 | there was no code in GDB 4.16 for "catch throw". | |
c5aa993b | 6279 | |
c906108c SS |
6280 | Called from catch_exception_command_1 () */ |
6281 | ||
6282 | ||
6283 | static void | |
fba45db2 | 6284 | handle_gnu_4_16_catch_command (char *arg, int tempflag, int from_tty) |
c906108c SS |
6285 | { |
6286 | /* First, translate ARG into something we can deal with in terms | |
6287 | of breakpoints. */ | |
6288 | ||
6289 | struct symtabs_and_lines sals; | |
6290 | struct symtab_and_line sal; | |
6291 | register struct expression *cond = 0; | |
6292 | register struct breakpoint *b; | |
6293 | char *save_arg; | |
6294 | int i; | |
6295 | ||
c5aa993b | 6296 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
6297 | |
6298 | /* If no arg given, or if first arg is 'if ', all active catch clauses | |
6299 | are breakpointed. */ | |
6300 | ||
c5aa993b | 6301 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' |
c906108c SS |
6302 | && (arg[2] == ' ' || arg[2] == '\t'))) |
6303 | { | |
6304 | /* Grab all active catch clauses. */ | |
6305 | sals = get_catch_sals (0); | |
6306 | } | |
6307 | else | |
6308 | { | |
6309 | /* Grab selected catch clauses. */ | |
6310 | error ("catch NAME not implemented"); | |
6311 | ||
6312 | #if 0 | |
6313 | /* Not sure why this code has been disabled. I'm leaving | |
6314 | it disabled. We can never come here now anyway | |
6315 | since we don't allow the "catch NAME" syntax. | |
c5aa993b | 6316 | pai/1997-07-11 */ |
c906108c SS |
6317 | |
6318 | /* This isn't used; I don't know what it was for. */ | |
6319 | sals = map_catch_names (arg, catch_breakpoint); | |
6320 | #endif | |
6321 | } | |
6322 | ||
c5aa993b | 6323 | if (!sals.nelts) |
c906108c SS |
6324 | return; |
6325 | ||
6326 | save_arg = arg; | |
6327 | for (i = 0; i < sals.nelts; i++) | |
6328 | { | |
6329 | resolve_sal_pc (&sals.sals[i]); | |
c5aa993b | 6330 | |
c906108c SS |
6331 | while (arg && *arg) |
6332 | { | |
6333 | if (arg[0] == 'i' && arg[1] == 'f' | |
6334 | && (arg[2] == ' ' || arg[2] == '\t')) | |
c5aa993b | 6335 | cond = parse_exp_1 ((arg += 2, &arg), |
c906108c SS |
6336 | block_for_pc (sals.sals[i].pc), 0); |
6337 | else | |
6338 | error ("Junk at end of arguments."); | |
6339 | } | |
6340 | arg = save_arg; | |
6341 | } | |
6342 | ||
6343 | for (i = 0; i < sals.nelts; i++) | |
6344 | { | |
6345 | sal = sals.sals[i]; | |
6346 | ||
6347 | if (from_tty) | |
6348 | describe_other_breakpoints (sal.pc, sal.section); | |
6349 | ||
53a5351d JM |
6350 | /* Important -- this is an ordinary breakpoint. For platforms |
6351 | with callback support for exceptions, | |
6352 | create_exception_catchpoint() will create special bp types | |
6353 | (bp_catch_catch and bp_catch_throw), and there is code in | |
6354 | insert_breakpoints() and elsewhere that depends on that. */ | |
4d28f7a8 KB |
6355 | b = set_raw_breakpoint (sal, bp_breakpoint); |
6356 | set_breakpoint_count (breakpoint_count + 1); | |
6357 | b->number = breakpoint_count; | |
c906108c SS |
6358 | |
6359 | b->cond = cond; | |
6360 | b->enable = enabled; | |
6361 | b->disposition = tempflag ? del : donttouch; | |
6362 | ||
6363 | mention (b); | |
6364 | } | |
6365 | ||
6366 | if (sals.nelts > 1) | |
6367 | { | |
53a5351d JM |
6368 | warning ("Multiple breakpoints were set."); |
6369 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 6370 | } |
b8c9b27d | 6371 | xfree (sals.sals); |
c906108c SS |
6372 | } |
6373 | ||
6374 | #if 0 | |
6375 | /* This creates a temporary internal breakpoint | |
6376 | just to placate infrun */ | |
6377 | static struct breakpoint * | |
fba45db2 | 6378 | create_temp_exception_breakpoint (CORE_ADDR pc) |
c906108c SS |
6379 | { |
6380 | struct symtab_and_line sal; | |
6381 | struct breakpoint *b; | |
6382 | ||
c5aa993b | 6383 | INIT_SAL (&sal); |
c906108c SS |
6384 | sal.pc = pc; |
6385 | sal.symtab = NULL; | |
6386 | sal.line = 0; | |
6387 | ||
4d28f7a8 | 6388 | b = set_raw_breakpoint (sal, bp_breakpoint); |
c906108c | 6389 | |
c906108c SS |
6390 | b->disposition = del; |
6391 | b->enable = enabled; | |
6392 | b->silent = 1; | |
6393 | b->number = internal_breakpoint_number--; | |
6394 | return b; | |
6395 | } | |
6396 | #endif | |
6397 | ||
6398 | static void | |
fba45db2 | 6399 | catch_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6400 | { |
c5aa993b | 6401 | |
c906108c SS |
6402 | /* The first argument may be an event name, such as "start" or "load". |
6403 | If so, then handle it as such. If it doesn't match an event name, | |
6404 | then attempt to interpret it as an exception name. (This latter is | |
6405 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
c5aa993b | 6406 | |
c906108c | 6407 | First, try to find the bounds of what might be an event name. */ |
c5aa993b JM |
6408 | char *arg1_start = arg; |
6409 | char *arg1_end; | |
6410 | int arg1_length; | |
6411 | ||
c906108c SS |
6412 | if (arg1_start == NULL) |
6413 | { | |
c5aa993b | 6414 | /* Old behaviour was to use pre-v-4.16 syntax */ |
c906108c SS |
6415 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
6416 | /* return; */ | |
c5aa993b | 6417 | /* Now, this is not allowed */ |
c906108c SS |
6418 | error ("Catch requires an event name."); |
6419 | ||
6420 | } | |
6421 | arg1_end = ep_find_event_name_end (arg1_start); | |
6422 | if (arg1_end == NULL) | |
6423 | error ("catch requires an event"); | |
6424 | arg1_length = arg1_end + 1 - arg1_start; | |
c5aa993b | 6425 | |
c906108c SS |
6426 | /* Try to match what we found against known event names. */ |
6427 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
6428 | { | |
6429 | error ("Catch of signal not yet implemented"); | |
6430 | } | |
6431 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
6432 | { | |
53a5351d JM |
6433 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1, |
6434 | tempflag, from_tty); | |
c906108c SS |
6435 | } |
6436 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
6437 | { | |
53a5351d JM |
6438 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1, |
6439 | tempflag, from_tty); | |
c906108c SS |
6440 | } |
6441 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
6442 | { | |
6443 | error ("Catch of thread_start not yet implemented"); | |
6444 | } | |
6445 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
6446 | { | |
6447 | error ("Catch of thread_exit not yet implemented"); | |
6448 | } | |
6449 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
6450 | { | |
6451 | error ("Catch of thread_join not yet implemented"); | |
6452 | } | |
6453 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
6454 | { | |
6455 | error ("Catch of start not yet implemented"); | |
6456 | } | |
6457 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
6458 | { | |
6459 | error ("Catch of exit not yet implemented"); | |
6460 | } | |
6461 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
6462 | { | |
6463 | #if defined(CHILD_INSERT_FORK_CATCHPOINT) | |
c5aa993b | 6464 | catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6465 | #else |
6466 | error ("Catch of fork not yet implemented"); | |
6467 | #endif | |
6468 | } | |
6469 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
6470 | { | |
6471 | #if defined(CHILD_INSERT_VFORK_CATCHPOINT) | |
c5aa993b | 6472 | catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6473 | #else |
6474 | error ("Catch of vfork not yet implemented"); | |
6475 | #endif | |
6476 | } | |
6477 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
6478 | { | |
6479 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) | |
c5aa993b | 6480 | catch_exec_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6481 | #else |
6482 | error ("Catch of exec not yet implemented"); | |
6483 | #endif | |
6484 | } | |
6485 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
6486 | { | |
6487 | #if defined(SOLIB_ADD) | |
c5aa993b | 6488 | catch_load_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6489 | #else |
6490 | error ("Catch of load not implemented"); | |
6491 | #endif | |
6492 | } | |
6493 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
6494 | { | |
6495 | #if defined(SOLIB_ADD) | |
c5aa993b | 6496 | catch_unload_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6497 | #else |
6498 | error ("Catch of load not implemented"); | |
6499 | #endif | |
6500 | } | |
6501 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
6502 | { | |
6503 | error ("Catch of stop not yet implemented"); | |
6504 | } | |
c5aa993b | 6505 | |
c906108c SS |
6506 | /* This doesn't appear to be an event name */ |
6507 | ||
6508 | else | |
6509 | { | |
6510 | /* Pre-v.4.16 behaviour was to treat the argument | |
c5aa993b | 6511 | as the name of an exception */ |
c906108c | 6512 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
c5aa993b | 6513 | /* Now this is not allowed */ |
c906108c SS |
6514 | error ("Unknown event kind specified for catch"); |
6515 | ||
6516 | } | |
6517 | } | |
6518 | ||
6519 | /* Used by the gui, could be made a worker for other things. */ | |
6520 | ||
6521 | struct breakpoint * | |
fba45db2 | 6522 | set_breakpoint_sal (struct symtab_and_line sal) |
c906108c SS |
6523 | { |
6524 | struct breakpoint *b; | |
4d28f7a8 | 6525 | b = set_raw_breakpoint (sal, bp_breakpoint); |
c906108c SS |
6526 | set_breakpoint_count (breakpoint_count + 1); |
6527 | b->number = breakpoint_count; | |
c906108c SS |
6528 | b->cond = 0; |
6529 | b->thread = -1; | |
6530 | return b; | |
6531 | } | |
6532 | ||
6533 | #if 0 | |
6534 | /* These aren't used; I don't know what they were for. */ | |
6535 | /* Disable breakpoints on all catch clauses described in ARGS. */ | |
6536 | static void | |
fba45db2 | 6537 | disable_catch (char *args) |
c906108c SS |
6538 | { |
6539 | /* Map the disable command to catch clauses described in ARGS. */ | |
6540 | } | |
6541 | ||
6542 | /* Enable breakpoints on all catch clauses described in ARGS. */ | |
6543 | static void | |
fba45db2 | 6544 | enable_catch (char *args) |
c906108c SS |
6545 | { |
6546 | /* Map the disable command to catch clauses described in ARGS. */ | |
6547 | } | |
6548 | ||
6549 | /* Delete breakpoints on all catch clauses in the active scope. */ | |
6550 | static void | |
fba45db2 | 6551 | delete_catch (char *args) |
c906108c SS |
6552 | { |
6553 | /* Map the delete command to catch clauses described in ARGS. */ | |
6554 | } | |
6555 | #endif /* 0 */ | |
6556 | ||
6557 | static void | |
fba45db2 | 6558 | catch_command (char *arg, int from_tty) |
c906108c SS |
6559 | { |
6560 | catch_command_1 (arg, 0, from_tty); | |
6561 | } | |
6562 | \f | |
6563 | ||
6564 | static void | |
fba45db2 | 6565 | tcatch_command (char *arg, int from_tty) |
c906108c SS |
6566 | { |
6567 | catch_command_1 (arg, 1, from_tty); | |
6568 | } | |
6569 | ||
6570 | ||
6571 | static void | |
fba45db2 | 6572 | clear_command (char *arg, int from_tty) |
c906108c SS |
6573 | { |
6574 | register struct breakpoint *b, *b1; | |
6575 | int default_match; | |
6576 | struct symtabs_and_lines sals; | |
6577 | struct symtab_and_line sal; | |
6578 | register struct breakpoint *found; | |
6579 | int i; | |
6580 | ||
6581 | if (arg) | |
6582 | { | |
6583 | sals = decode_line_spec (arg, 1); | |
6584 | default_match = 0; | |
6585 | } | |
6586 | else | |
6587 | { | |
c5aa993b | 6588 | sals.sals = (struct symtab_and_line *) |
c906108c | 6589 | xmalloc (sizeof (struct symtab_and_line)); |
c5aa993b | 6590 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
6591 | sal.line = default_breakpoint_line; |
6592 | sal.symtab = default_breakpoint_symtab; | |
6593 | sal.pc = default_breakpoint_address; | |
6594 | if (sal.symtab == 0) | |
6595 | error ("No source file specified."); | |
6596 | ||
6597 | sals.sals[0] = sal; | |
6598 | sals.nelts = 1; | |
6599 | ||
6600 | default_match = 1; | |
6601 | } | |
6602 | ||
6603 | /* For each line spec given, delete bps which correspond | |
6604 | to it. We do this in two loops: the first loop looks at | |
6605 | the initial bp(s) in the chain which should be deleted, | |
6606 | the second goes down the rest of the chain looking ahead | |
6607 | one so it can take those bps off the chain without messing | |
6608 | up the chain. */ | |
6609 | ||
6610 | ||
6611 | for (i = 0; i < sals.nelts; i++) | |
6612 | { | |
6613 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6614 | If line given (pc == 0), clear all bpts on specified line. |
6615 | If defaulting, clear all bpts on default line | |
c906108c | 6616 | or at default pc. |
c5aa993b JM |
6617 | |
6618 | defaulting sal.pc != 0 tests to do | |
6619 | ||
6620 | 0 1 pc | |
6621 | 1 1 pc _and_ line | |
6622 | 0 0 line | |
6623 | 1 0 <can't happen> */ | |
c906108c SS |
6624 | |
6625 | sal = sals.sals[i]; | |
6626 | found = (struct breakpoint *) 0; | |
6627 | ||
6628 | ||
6629 | while (breakpoint_chain | |
c5aa993b JM |
6630 | /* Why don't we check here that this is not |
6631 | a watchpoint, etc., as we do below? | |
6632 | I can't make it fail, but don't know | |
6633 | what's stopping the failure: a watchpoint | |
6634 | of the same address as "sal.pc" should | |
6635 | wind up being deleted. */ | |
6636 | ||
6637 | && (((sal.pc && (breakpoint_chain->address == sal.pc)) && | |
6638 | (overlay_debugging == 0 || | |
6639 | breakpoint_chain->section == sal.section)) | |
6640 | || ((default_match || (0 == sal.pc)) | |
6641 | && breakpoint_chain->source_file != NULL | |
6642 | && sal.symtab != NULL | |
6643 | && STREQ (breakpoint_chain->source_file, sal.symtab->filename) | |
6644 | && breakpoint_chain->line_number == sal.line))) | |
c906108c SS |
6645 | |
6646 | { | |
6647 | b1 = breakpoint_chain; | |
6648 | breakpoint_chain = b1->next; | |
6649 | b1->next = found; | |
6650 | found = b1; | |
6651 | } | |
6652 | ||
6653 | ALL_BREAKPOINTS (b) | |
6654 | ||
c5aa993b JM |
6655 | while (b->next |
6656 | && b->next->type != bp_none | |
6657 | && b->next->type != bp_watchpoint | |
6658 | && b->next->type != bp_hardware_watchpoint | |
6659 | && b->next->type != bp_read_watchpoint | |
6660 | && b->next->type != bp_access_watchpoint | |
6661 | && (((sal.pc && (b->next->address == sal.pc)) && | |
6662 | (overlay_debugging == 0 || | |
6663 | b->next->section == sal.section)) | |
6664 | || ((default_match || (0 == sal.pc)) | |
6665 | && b->next->source_file != NULL | |
6666 | && sal.symtab != NULL | |
6667 | && STREQ (b->next->source_file, sal.symtab->filename) | |
6668 | && b->next->line_number == sal.line))) | |
c906108c SS |
6669 | |
6670 | ||
c5aa993b JM |
6671 | { |
6672 | b1 = b->next; | |
6673 | b->next = b1->next; | |
6674 | b1->next = found; | |
6675 | found = b1; | |
6676 | } | |
c906108c SS |
6677 | |
6678 | if (found == 0) | |
6679 | { | |
6680 | if (arg) | |
6681 | error ("No breakpoint at %s.", arg); | |
6682 | else | |
6683 | error ("No breakpoint at this line."); | |
6684 | } | |
6685 | ||
c5aa993b JM |
6686 | if (found->next) |
6687 | from_tty = 1; /* Always report if deleted more than one */ | |
6688 | if (from_tty) | |
6689 | printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); | |
c906108c SS |
6690 | breakpoints_changed (); |
6691 | while (found) | |
6692 | { | |
c5aa993b JM |
6693 | if (from_tty) |
6694 | printf_unfiltered ("%d ", found->number); | |
c906108c SS |
6695 | b1 = found->next; |
6696 | delete_breakpoint (found); | |
6697 | found = b1; | |
6698 | } | |
c5aa993b JM |
6699 | if (from_tty) |
6700 | putchar_unfiltered ('\n'); | |
c906108c | 6701 | } |
b8c9b27d | 6702 | xfree (sals.sals); |
c906108c SS |
6703 | } |
6704 | \f | |
6705 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6706 | all breakpoints that are marked for deletion, whether hit or not. | |
6707 | This is called after any breakpoint is hit, or after errors. */ | |
6708 | ||
6709 | void | |
fba45db2 | 6710 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
6711 | { |
6712 | struct breakpoint *b, *temp; | |
6713 | ||
6714 | for (; bs; bs = bs->next) | |
c5aa993b | 6715 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == del |
c906108c SS |
6716 | && bs->stop) |
6717 | delete_breakpoint (bs->breakpoint_at); | |
6718 | ||
6719 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
6720 | { |
6721 | if (b->disposition == del_at_next_stop) | |
6722 | delete_breakpoint (b); | |
6723 | } | |
c906108c SS |
6724 | } |
6725 | ||
53a5351d JM |
6726 | /* Delete a breakpoint and clean up all traces of it in the data |
6727 | structures. */ | |
c906108c SS |
6728 | |
6729 | void | |
fba45db2 | 6730 | delete_breakpoint (struct breakpoint *bpt) |
c906108c SS |
6731 | { |
6732 | register struct breakpoint *b; | |
6733 | register bpstat bs; | |
6734 | ||
6735 | if (bpt == NULL) | |
6736 | error ("Internal error (attempted to delete a NULL breakpoint)"); | |
6737 | ||
6738 | ||
6739 | /* Has this bp already been deleted? This can happen because multiple | |
6740 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
6741 | ||
6742 | One example of this happening is a watchpoint's scope bp. When the | |
6743 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
6744 | delete it. We also delete its scope bp. But the scope bp is marked | |
6745 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
6746 | checked for auto-deleting bp's, which are deleted. | |
6747 | ||
6748 | A real solution to this problem might involve reference counts in bp's, | |
6749 | and/or giving them pointers back to their referencing bpstat's, and | |
6750 | teaching delete_breakpoint to only free a bp's storage when no more | |
6751 | references were extent. A cheaper bandaid was chosen. */ | |
6752 | if (bpt->type == bp_none) | |
6753 | return; | |
6754 | ||
6755 | if (delete_breakpoint_hook) | |
6756 | delete_breakpoint_hook (bpt); | |
104c1213 | 6757 | breakpoint_delete_event (bpt->number); |
c906108c SS |
6758 | |
6759 | if (bpt->inserted) | |
6760 | remove_breakpoint (bpt, mark_uninserted); | |
c5aa993b | 6761 | |
c906108c SS |
6762 | if (breakpoint_chain == bpt) |
6763 | breakpoint_chain = bpt->next; | |
6764 | ||
6765 | /* If we have callback-style exception catchpoints, don't go through | |
6766 | the adjustments to the C++ runtime library etc. if the inferior | |
6767 | isn't actually running. target_enable_exception_callback for a | |
6768 | null target ops vector gives an undesirable error message, so we | |
6769 | check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's | |
c5aa993b | 6770 | exceptions are supported in this way, it's OK for now. FIXME */ |
c906108c SS |
6771 | if (ep_is_exception_catchpoint (bpt) && target_has_execution) |
6772 | { | |
6773 | static char message1[] = "Error in deleting catchpoint %d:\n"; | |
6774 | static char message[sizeof (message1) + 30]; | |
6775 | args_for_catchpoint_enable args; | |
6776 | ||
53a5351d JM |
6777 | /* Format possible error msg */ |
6778 | sprintf (message, message1, bpt->number); | |
6779 | args.kind = bpt->type == bp_catch_catch ? | |
6780 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
c906108c SS |
6781 | args.enable = 0; |
6782 | catch_errors (cover_target_enable_exception_callback, &args, | |
6783 | message, RETURN_MASK_ALL); | |
6784 | } | |
6785 | ||
6786 | ||
6787 | ALL_BREAKPOINTS (b) | |
6788 | if (b->next == bpt) | |
c5aa993b JM |
6789 | { |
6790 | b->next = bpt->next; | |
6791 | break; | |
6792 | } | |
c906108c SS |
6793 | |
6794 | /* Before turning off the visuals for the bp, check to see that | |
6795 | there are no other bps at the same address. */ | |
6796 | if (tui_version) | |
6797 | { | |
6798 | int clearIt; | |
6799 | ||
6800 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
6801 | { |
6802 | clearIt = (b->address != bpt->address); | |
6803 | if (!clearIt) | |
6804 | break; | |
6805 | } | |
c906108c SS |
6806 | |
6807 | if (clearIt) | |
c5aa993b JM |
6808 | { |
6809 | TUIDO (((TuiOpaqueFuncPtr) tui_vAllSetHasBreakAt, bpt, 0)); | |
6810 | TUIDO (((TuiOpaqueFuncPtr) tuiUpdateAllExecInfos)); | |
6811 | } | |
c906108c SS |
6812 | } |
6813 | ||
9f60f21b | 6814 | check_duplicates (bpt); |
c906108c SS |
6815 | /* If this breakpoint was inserted, and there is another breakpoint |
6816 | at the same address, we need to insert the other breakpoint. */ | |
6817 | if (bpt->inserted | |
6818 | && bpt->type != bp_hardware_watchpoint | |
6819 | && bpt->type != bp_read_watchpoint | |
6820 | && bpt->type != bp_access_watchpoint | |
6821 | && bpt->type != bp_catch_fork | |
6822 | && bpt->type != bp_catch_vfork | |
6823 | && bpt->type != bp_catch_exec) | |
6824 | { | |
6825 | ALL_BREAKPOINTS (b) | |
6826 | if (b->address == bpt->address | |
6827 | && b->section == bpt->section | |
6828 | && !b->duplicate | |
6829 | && b->enable != disabled | |
6830 | && b->enable != shlib_disabled | |
6831 | && b->enable != call_disabled) | |
c5aa993b JM |
6832 | { |
6833 | int val; | |
53a5351d | 6834 | |
c2c6d25f JM |
6835 | /* We should never reach this point if there is a permanent |
6836 | breakpoint at the same address as the one being deleted. | |
6837 | If there is a permanent breakpoint somewhere, it should | |
6838 | always be the only one inserted. */ | |
6839 | if (b->enable == permanent) | |
8e65ff28 AC |
6840 | internal_error (__FILE__, __LINE__, |
6841 | "another breakpoint was inserted on top of " | |
c2c6d25f JM |
6842 | "a permanent breakpoint"); |
6843 | ||
53a5351d JM |
6844 | if (b->type == bp_hardware_breakpoint) |
6845 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
6846 | else | |
6847 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
6848 | ||
c5aa993b JM |
6849 | if (val != 0) |
6850 | { | |
6851 | target_terminal_ours_for_output (); | |
53a5351d | 6852 | warning ("Cannot insert breakpoint %d:", b->number); |
c5aa993b JM |
6853 | memory_error (val, b->address); /* which bombs us out */ |
6854 | } | |
6855 | else | |
6856 | b->inserted = 1; | |
6857 | } | |
c906108c SS |
6858 | } |
6859 | ||
6860 | free_command_lines (&bpt->commands); | |
6861 | if (bpt->cond) | |
b8c9b27d | 6862 | xfree (bpt->cond); |
c906108c | 6863 | if (bpt->cond_string != NULL) |
b8c9b27d | 6864 | xfree (bpt->cond_string); |
c906108c | 6865 | if (bpt->addr_string != NULL) |
b8c9b27d | 6866 | xfree (bpt->addr_string); |
c906108c | 6867 | if (bpt->exp != NULL) |
b8c9b27d | 6868 | xfree (bpt->exp); |
c906108c | 6869 | if (bpt->exp_string != NULL) |
b8c9b27d | 6870 | xfree (bpt->exp_string); |
c906108c SS |
6871 | if (bpt->val != NULL) |
6872 | value_free (bpt->val); | |
6873 | if (bpt->source_file != NULL) | |
b8c9b27d | 6874 | xfree (bpt->source_file); |
c906108c | 6875 | if (bpt->dll_pathname != NULL) |
b8c9b27d | 6876 | xfree (bpt->dll_pathname); |
c906108c | 6877 | if (bpt->triggered_dll_pathname != NULL) |
b8c9b27d | 6878 | xfree (bpt->triggered_dll_pathname); |
c906108c | 6879 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 6880 | xfree (bpt->exec_pathname); |
c906108c SS |
6881 | |
6882 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
6883 | /* FIXME, how can we find all bpstat's? | |
6884 | We just check stop_bpstat for now. */ | |
6885 | for (bs = stop_bpstat; bs; bs = bs->next) | |
6886 | if (bs->breakpoint_at == bpt) | |
6887 | { | |
6888 | bs->breakpoint_at = NULL; | |
6889 | ||
6890 | /* we'd call bpstat_clear_actions, but that free's stuff and due | |
6891 | to the multiple pointers pointing to one item with no | |
6892 | reference counts found anywhere through out the bpstat's (how | |
6893 | do you spell fragile?), we don't want to free things twice -- | |
6894 | better a memory leak than a corrupt malloc pool! */ | |
6895 | bs->commands = NULL; | |
6896 | bs->old_val = NULL; | |
6897 | } | |
6898 | /* On the chance that someone will soon try again to delete this same | |
6899 | bp, we mark it as deleted before freeing its storage. */ | |
6900 | bpt->type = bp_none; | |
6901 | ||
b8c9b27d | 6902 | xfree (bpt); |
c906108c SS |
6903 | } |
6904 | ||
4d6140d9 AC |
6905 | static void |
6906 | do_delete_breakpoint_cleanup (void *b) | |
6907 | { | |
6908 | delete_breakpoint (b); | |
6909 | } | |
6910 | ||
6911 | struct cleanup * | |
6912 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
6913 | { | |
6914 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
6915 | } | |
6916 | ||
6917 | struct cleanup * | |
6918 | make_exec_cleanup_delete_breakpoint (struct breakpoint *b) | |
6919 | { | |
6920 | return make_exec_cleanup (do_delete_breakpoint_cleanup, b); | |
6921 | } | |
6922 | ||
c906108c | 6923 | void |
fba45db2 | 6924 | delete_command (char *arg, int from_tty) |
c906108c SS |
6925 | { |
6926 | struct breakpoint *b, *temp; | |
6927 | ||
6928 | if (arg == 0) | |
6929 | { | |
6930 | int breaks_to_delete = 0; | |
6931 | ||
6932 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
6933 | Do not delete internal or call-dummy breakpoints, these |
6934 | have to be deleted with an explicit breakpoint number argument. */ | |
6935 | ALL_BREAKPOINTS (b) | |
6936 | { | |
6937 | if (b->type != bp_call_dummy && | |
6938 | b->type != bp_shlib_event && | |
c4093a6a | 6939 | b->type != bp_thread_event && |
c5aa993b JM |
6940 | b->number >= 0) |
6941 | breaks_to_delete = 1; | |
6942 | } | |
c906108c SS |
6943 | |
6944 | /* Ask user only if there are some breakpoints to delete. */ | |
6945 | if (!from_tty | |
6946 | || (breaks_to_delete && query ("Delete all breakpoints? "))) | |
6947 | { | |
c5aa993b JM |
6948 | ALL_BREAKPOINTS_SAFE (b, temp) |
6949 | { | |
6950 | if (b->type != bp_call_dummy && | |
6951 | b->type != bp_shlib_event && | |
c4093a6a | 6952 | b->type != bp_thread_event && |
c5aa993b JM |
6953 | b->number >= 0) |
6954 | delete_breakpoint (b); | |
6955 | } | |
c906108c SS |
6956 | } |
6957 | } | |
6958 | else | |
6959 | map_breakpoint_numbers (arg, delete_breakpoint); | |
6960 | } | |
6961 | ||
6962 | /* Reset a breakpoint given it's struct breakpoint * BINT. | |
6963 | The value we return ends up being the return value from catch_errors. | |
6964 | Unused in this case. */ | |
6965 | ||
6966 | static int | |
fba45db2 | 6967 | breakpoint_re_set_one (PTR bint) |
c906108c | 6968 | { |
53a5351d JM |
6969 | /* get past catch_errs */ |
6970 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
6971 | struct value *mark; |
6972 | int i; | |
6973 | struct symtabs_and_lines sals; | |
6974 | char *s; | |
6975 | enum enable save_enable; | |
6976 | ||
6977 | switch (b->type) | |
6978 | { | |
6979 | case bp_none: | |
53a5351d JM |
6980 | warning ("attempted to reset apparently deleted breakpoint #%d?", |
6981 | b->number); | |
c906108c SS |
6982 | return 0; |
6983 | case bp_breakpoint: | |
6984 | case bp_hardware_breakpoint: | |
6985 | case bp_catch_load: | |
6986 | case bp_catch_unload: | |
6987 | if (b->addr_string == NULL) | |
6988 | { | |
6989 | /* Anything without a string can't be re-set. */ | |
6990 | delete_breakpoint (b); | |
6991 | return 0; | |
6992 | } | |
6993 | /* In case we have a problem, disable this breakpoint. We'll restore | |
c5aa993b | 6994 | its status if we succeed. */ |
c906108c SS |
6995 | save_enable = b->enable; |
6996 | b->enable = disabled; | |
6997 | ||
6998 | set_language (b->language); | |
6999 | input_radix = b->input_radix; | |
7000 | s = b->addr_string; | |
c5aa993b | 7001 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL); |
c906108c SS |
7002 | for (i = 0; i < sals.nelts; i++) |
7003 | { | |
7004 | resolve_sal_pc (&sals.sals[i]); | |
7005 | ||
7006 | /* Reparse conditions, they might contain references to the | |
7007 | old symtab. */ | |
7008 | if (b->cond_string != NULL) | |
7009 | { | |
7010 | s = b->cond_string; | |
7011 | if (b->cond) | |
b8c9b27d | 7012 | xfree (b->cond); |
c906108c SS |
7013 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); |
7014 | } | |
7015 | ||
c5aa993b | 7016 | /* We need to re-set the breakpoint if the address changes... */ |
c906108c | 7017 | if (b->address != sals.sals[i].pc |
c5aa993b JM |
7018 | /* ...or new and old breakpoints both have source files, and |
7019 | the source file name or the line number changes... */ | |
c906108c SS |
7020 | || (b->source_file != NULL |
7021 | && sals.sals[i].symtab != NULL | |
7022 | && (!STREQ (b->source_file, sals.sals[i].symtab->filename) | |
7023 | || b->line_number != sals.sals[i].line) | |
c906108c | 7024 | ) |
c5aa993b JM |
7025 | /* ...or we switch between having a source file and not having |
7026 | one. */ | |
7027 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
7028 | ) | |
c906108c SS |
7029 | { |
7030 | if (b->source_file != NULL) | |
b8c9b27d | 7031 | xfree (b->source_file); |
c906108c SS |
7032 | if (sals.sals[i].symtab == NULL) |
7033 | b->source_file = NULL; | |
7034 | else | |
7035 | b->source_file = | |
7036 | savestring (sals.sals[i].symtab->filename, | |
7037 | strlen (sals.sals[i].symtab->filename)); | |
7038 | b->line_number = sals.sals[i].line; | |
7039 | b->address = sals.sals[i].pc; | |
7040 | ||
c5aa993b JM |
7041 | /* Used to check for duplicates here, but that can |
7042 | cause trouble, as it doesn't check for disable | |
7043 | breakpoints. */ | |
c906108c SS |
7044 | |
7045 | mention (b); | |
7046 | ||
7047 | /* Might be better to do this just once per breakpoint_re_set, | |
c5aa993b | 7048 | rather than once for every breakpoint. */ |
c906108c SS |
7049 | breakpoints_changed (); |
7050 | } | |
7051 | b->section = sals.sals[i].section; | |
7052 | b->enable = save_enable; /* Restore it, this worked. */ | |
7053 | ||
7054 | ||
c5aa993b | 7055 | /* Now that this is re-enabled, check_duplicates |
c906108c | 7056 | can be used. */ |
9f60f21b | 7057 | check_duplicates (b); |
c906108c SS |
7058 | |
7059 | } | |
b8c9b27d | 7060 | xfree (sals.sals); |
c906108c SS |
7061 | break; |
7062 | ||
7063 | case bp_watchpoint: | |
7064 | case bp_hardware_watchpoint: | |
7065 | case bp_read_watchpoint: | |
7066 | case bp_access_watchpoint: | |
7067 | innermost_block = NULL; | |
53a5351d JM |
7068 | /* The issue arises of what context to evaluate this in. The |
7069 | same one as when it was set, but what does that mean when | |
7070 | symbols have been re-read? We could save the filename and | |
7071 | functionname, but if the context is more local than that, the | |
7072 | best we could do would be something like how many levels deep | |
7073 | and which index at that particular level, but that's going to | |
7074 | be less stable than filenames or function names. */ | |
7075 | ||
c906108c SS |
7076 | /* So for now, just use a global context. */ |
7077 | if (b->exp) | |
b8c9b27d | 7078 | xfree (b->exp); |
c906108c SS |
7079 | b->exp = parse_expression (b->exp_string); |
7080 | b->exp_valid_block = innermost_block; | |
7081 | mark = value_mark (); | |
7082 | if (b->val) | |
7083 | value_free (b->val); | |
7084 | b->val = evaluate_expression (b->exp); | |
7085 | release_value (b->val); | |
7086 | if (VALUE_LAZY (b->val)) | |
7087 | value_fetch_lazy (b->val); | |
7088 | ||
7089 | if (b->cond_string != NULL) | |
7090 | { | |
7091 | s = b->cond_string; | |
7092 | if (b->cond) | |
b8c9b27d | 7093 | xfree (b->cond); |
c5aa993b | 7094 | b->cond = parse_exp_1 (&s, (struct block *) 0, 0); |
c906108c SS |
7095 | } |
7096 | if (b->enable == enabled) | |
7097 | mention (b); | |
7098 | value_free_to_mark (mark); | |
7099 | break; | |
c5aa993b JM |
7100 | case bp_catch_catch: |
7101 | case bp_catch_throw: | |
c906108c | 7102 | break; |
c5aa993b JM |
7103 | /* We needn't really do anything to reset these, since the mask |
7104 | that requests them is unaffected by e.g., new libraries being | |
7105 | loaded. */ | |
c906108c SS |
7106 | case bp_catch_fork: |
7107 | case bp_catch_vfork: | |
7108 | case bp_catch_exec: | |
7109 | break; | |
c5aa993b | 7110 | |
c906108c SS |
7111 | default: |
7112 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
7113 | /* fall through */ | |
c5aa993b JM |
7114 | /* Delete longjmp breakpoints, they will be reset later by |
7115 | breakpoint_re_set. */ | |
c906108c SS |
7116 | case bp_longjmp: |
7117 | case bp_longjmp_resume: | |
7118 | delete_breakpoint (b); | |
7119 | break; | |
7120 | ||
c5aa993b JM |
7121 | /* This breakpoint is special, it's set up when the inferior |
7122 | starts and we really don't want to touch it. */ | |
c906108c SS |
7123 | case bp_shlib_event: |
7124 | ||
c4093a6a JM |
7125 | /* Like bp_shlib_event, this breakpoint type is special. |
7126 | Once it is set up, we do not want to touch it. */ | |
7127 | case bp_thread_event: | |
7128 | ||
c5aa993b JM |
7129 | /* Keep temporary breakpoints, which can be encountered when we step |
7130 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7131 | Otherwise these should have been blown away via the cleanup chain | |
7132 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7133 | case bp_until: |
7134 | case bp_finish: | |
7135 | case bp_watchpoint_scope: | |
7136 | case bp_call_dummy: | |
7137 | case bp_step_resume: | |
7138 | break; | |
7139 | } | |
7140 | ||
7141 | return 0; | |
7142 | } | |
7143 | ||
7144 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7145 | void | |
fba45db2 | 7146 | breakpoint_re_set (void) |
c906108c SS |
7147 | { |
7148 | struct breakpoint *b, *temp; | |
7149 | enum language save_language; | |
7150 | int save_input_radix; | |
7151 | static char message1[] = "Error in re-setting breakpoint %d:\n"; | |
c5aa993b JM |
7152 | char message[sizeof (message1) + 30 /* slop */ ]; |
7153 | ||
c906108c SS |
7154 | save_language = current_language->la_language; |
7155 | save_input_radix = input_radix; | |
7156 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7157 | { |
53a5351d JM |
7158 | /* Format possible error msg */ |
7159 | sprintf (message, message1, b->number); | |
c5aa993b JM |
7160 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
7161 | } | |
c906108c SS |
7162 | set_language (save_language); |
7163 | input_radix = save_input_radix; | |
7164 | ||
7165 | #ifdef GET_LONGJMP_TARGET | |
7166 | create_longjmp_breakpoint ("longjmp"); | |
7167 | create_longjmp_breakpoint ("_longjmp"); | |
7168 | create_longjmp_breakpoint ("siglongjmp"); | |
7169 | create_longjmp_breakpoint ("_siglongjmp"); | |
7170 | create_longjmp_breakpoint (NULL); | |
7171 | #endif | |
7172 | ||
7173 | #if 0 | |
7174 | /* Took this out (temporarily at least), since it produces an extra | |
7175 | blank line at startup. This messes up the gdbtests. -PB */ | |
7176 | /* Blank line to finish off all those mention() messages we just printed. */ | |
7177 | printf_filtered ("\n"); | |
7178 | #endif | |
7179 | } | |
7180 | \f | |
7181 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. | |
7182 | If from_tty is nonzero, it prints a message to that effect, | |
7183 | which ends with a period (no newline). */ | |
7184 | ||
7185 | /* Reset the thread number of this breakpoint: | |
7186 | ||
7187 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7188 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7189 | void |
fba45db2 | 7190 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7191 | { |
7192 | if (b->thread != -1) | |
7193 | { | |
39f77062 KB |
7194 | if (in_thread_list (inferior_ptid)) |
7195 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7196 | } |
7197 | } | |
7198 | ||
7199 | void | |
fba45db2 | 7200 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c SS |
7201 | { |
7202 | register struct breakpoint *b; | |
7203 | ||
7204 | if (count < 0) | |
7205 | count = 0; | |
7206 | ||
7207 | ALL_BREAKPOINTS (b) | |
7208 | if (b->number == bptnum) | |
c5aa993b JM |
7209 | { |
7210 | b->ignore_count = count; | |
7211 | if (!from_tty) | |
c906108c | 7212 | return; |
c5aa993b JM |
7213 | else if (count == 0) |
7214 | printf_filtered ("Will stop next time breakpoint %d is reached.", | |
7215 | bptnum); | |
7216 | else if (count == 1) | |
7217 | printf_filtered ("Will ignore next crossing of breakpoint %d.", | |
7218 | bptnum); | |
7219 | else | |
7220 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", | |
7221 | count, bptnum); | |
7222 | breakpoints_changed (); | |
7223 | return; | |
7224 | } | |
c906108c SS |
7225 | |
7226 | error ("No breakpoint number %d.", bptnum); | |
7227 | } | |
7228 | ||
7229 | /* Clear the ignore counts of all breakpoints. */ | |
7230 | void | |
fba45db2 | 7231 | breakpoint_clear_ignore_counts (void) |
c906108c SS |
7232 | { |
7233 | struct breakpoint *b; | |
7234 | ||
7235 | ALL_BREAKPOINTS (b) | |
7236 | b->ignore_count = 0; | |
7237 | } | |
7238 | ||
7239 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
7240 | ||
7241 | static void | |
fba45db2 | 7242 | ignore_command (char *args, int from_tty) |
c906108c SS |
7243 | { |
7244 | char *p = args; | |
7245 | register int num; | |
7246 | ||
7247 | if (p == 0) | |
7248 | error_no_arg ("a breakpoint number"); | |
c5aa993b | 7249 | |
c906108c | 7250 | num = get_number (&p); |
5c44784c JM |
7251 | if (num == 0) |
7252 | error ("bad breakpoint number: '%s'", args); | |
c906108c SS |
7253 | if (*p == 0) |
7254 | error ("Second argument (specified ignore-count) is missing."); | |
7255 | ||
7256 | set_ignore_count (num, | |
7257 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7258 | from_tty); | |
7259 | printf_filtered ("\n"); | |
7260 | breakpoints_changed (); | |
7261 | } | |
7262 | \f | |
7263 | /* Call FUNCTION on each of the breakpoints | |
7264 | whose numbers are given in ARGS. */ | |
7265 | ||
7266 | static void | |
831662b3 | 7267 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c SS |
7268 | { |
7269 | register char *p = args; | |
7270 | char *p1; | |
7271 | register int num; | |
5c44784c | 7272 | register struct breakpoint *b, *tmp; |
11cf8741 | 7273 | int match; |
c906108c SS |
7274 | |
7275 | if (p == 0) | |
7276 | error_no_arg ("one or more breakpoint numbers"); | |
7277 | ||
7278 | while (*p) | |
7279 | { | |
11cf8741 | 7280 | match = 0; |
c906108c | 7281 | p1 = p; |
c5aa993b | 7282 | |
5c44784c JM |
7283 | num = get_number_or_range (&p1); |
7284 | if (num == 0) | |
c5aa993b | 7285 | { |
5c44784c JM |
7286 | warning ("bad breakpoint number at or near '%s'", p); |
7287 | } | |
7288 | else | |
7289 | { | |
7290 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7291 | if (b->number == num) | |
7292 | { | |
7293 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7294 | match = 1; |
5c44784c JM |
7295 | function (b); |
7296 | if (related_breakpoint) | |
7297 | function (related_breakpoint); | |
11cf8741 | 7298 | break; |
5c44784c | 7299 | } |
11cf8741 JM |
7300 | if (match == 0) |
7301 | printf_unfiltered ("No breakpoint number %d.\n", num); | |
c5aa993b | 7302 | } |
c906108c SS |
7303 | p = p1; |
7304 | } | |
7305 | } | |
7306 | ||
7307 | void | |
fba45db2 | 7308 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7309 | { |
7310 | /* Never disable a watchpoint scope breakpoint; we want to | |
7311 | hit them when we leave scope so we can delete both the | |
7312 | watchpoint and its scope breakpoint at that time. */ | |
7313 | if (bpt->type == bp_watchpoint_scope) | |
7314 | return; | |
7315 | ||
c2c6d25f JM |
7316 | /* You can't disable permanent breakpoints. */ |
7317 | if (bpt->enable == permanent) | |
7318 | return; | |
7319 | ||
c906108c SS |
7320 | bpt->enable = disabled; |
7321 | ||
9f60f21b | 7322 | check_duplicates (bpt); |
c906108c SS |
7323 | |
7324 | if (modify_breakpoint_hook) | |
7325 | modify_breakpoint_hook (bpt); | |
104c1213 | 7326 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7327 | } |
7328 | ||
7329 | /* ARGSUSED */ | |
7330 | static void | |
fba45db2 | 7331 | disable_command (char *args, int from_tty) |
c906108c SS |
7332 | { |
7333 | register struct breakpoint *bpt; | |
7334 | if (args == 0) | |
7335 | ALL_BREAKPOINTS (bpt) | |
7336 | switch (bpt->type) | |
c5aa993b JM |
7337 | { |
7338 | case bp_none: | |
53a5351d JM |
7339 | warning ("attempted to disable apparently deleted breakpoint #%d?", |
7340 | bpt->number); | |
c5aa993b JM |
7341 | continue; |
7342 | case bp_breakpoint: | |
7343 | case bp_catch_load: | |
7344 | case bp_catch_unload: | |
7345 | case bp_catch_fork: | |
7346 | case bp_catch_vfork: | |
7347 | case bp_catch_exec: | |
7348 | case bp_catch_catch: | |
7349 | case bp_catch_throw: | |
7350 | case bp_hardware_breakpoint: | |
7351 | case bp_watchpoint: | |
7352 | case bp_hardware_watchpoint: | |
7353 | case bp_read_watchpoint: | |
7354 | case bp_access_watchpoint: | |
7355 | disable_breakpoint (bpt); | |
7356 | default: | |
7357 | continue; | |
7358 | } | |
c906108c SS |
7359 | else |
7360 | map_breakpoint_numbers (args, disable_breakpoint); | |
7361 | } | |
7362 | ||
7363 | static void | |
fba45db2 | 7364 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c SS |
7365 | { |
7366 | struct frame_info *save_selected_frame = NULL; | |
7367 | int save_selected_frame_level = -1; | |
7368 | int target_resources_ok, other_type_used; | |
7369 | struct value *mark; | |
7370 | ||
7371 | if (bpt->type == bp_hardware_breakpoint) | |
7372 | { | |
7373 | int i; | |
c5aa993b | 7374 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7375 | target_resources_ok = |
7376 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7377 | i + 1, 0); | |
c906108c | 7378 | if (target_resources_ok == 0) |
c5aa993b | 7379 | error ("No hardware breakpoint support in the target."); |
c906108c | 7380 | else if (target_resources_ok < 0) |
c5aa993b | 7381 | error ("Hardware breakpoints used exceeds limit."); |
c906108c SS |
7382 | } |
7383 | ||
c2c6d25f JM |
7384 | if (bpt->enable != permanent) |
7385 | bpt->enable = enabled; | |
c906108c | 7386 | bpt->disposition = disposition; |
9f60f21b | 7387 | check_duplicates (bpt); |
c906108c SS |
7388 | breakpoints_changed (); |
7389 | ||
53a5351d JM |
7390 | if (bpt->type == bp_watchpoint || |
7391 | bpt->type == bp_hardware_watchpoint || | |
7392 | bpt->type == bp_read_watchpoint || | |
7393 | bpt->type == bp_access_watchpoint) | |
c906108c SS |
7394 | { |
7395 | if (bpt->exp_valid_block != NULL) | |
7396 | { | |
7397 | struct frame_info *fr = | |
7398 | ||
c5aa993b JM |
7399 | /* Ensure that we have the current frame. Else, this |
7400 | next query may pessimistically be answered as, "No, | |
7401 | not within current scope". */ | |
7402 | get_current_frame (); | |
7403 | fr = find_frame_addr_in_frame_chain (bpt->watchpoint_frame); | |
c906108c SS |
7404 | if (fr == NULL) |
7405 | { | |
7406 | printf_filtered ("\ | |
7407 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
7408 | is valid is not currently in scope.\n", bpt->number); | |
7409 | bpt->enable = disabled; | |
7410 | return; | |
7411 | } | |
7412 | ||
7413 | save_selected_frame = selected_frame; | |
7414 | save_selected_frame_level = selected_frame_level; | |
7415 | select_frame (fr, -1); | |
7416 | } | |
7417 | ||
7418 | value_free (bpt->val); | |
7419 | mark = value_mark (); | |
7420 | bpt->val = evaluate_expression (bpt->exp); | |
7421 | release_value (bpt->val); | |
7422 | if (VALUE_LAZY (bpt->val)) | |
7423 | value_fetch_lazy (bpt->val); | |
7424 | ||
7425 | if (bpt->type == bp_hardware_watchpoint || | |
c5aa993b JM |
7426 | bpt->type == bp_read_watchpoint || |
7427 | bpt->type == bp_access_watchpoint) | |
7428 | { | |
7429 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); | |
7430 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
7431 | ||
7432 | /* Hack around 'unused var' error for some targets here */ | |
7433 | (void) mem_cnt, i; | |
7434 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
7435 | bpt->type, i + mem_cnt, other_type_used); | |
7436 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
7437 | bp_watchpoint in the following condition */ | |
7438 | if (target_resources_ok < 0) | |
7439 | { | |
7440 | printf_filtered ("\ | |
c906108c SS |
7441 | Cannot enable watchpoint %d because target watch resources\n\ |
7442 | have been allocated for other watchpoints.\n", bpt->number); | |
c5aa993b JM |
7443 | bpt->enable = disabled; |
7444 | value_free_to_mark (mark); | |
7445 | return; | |
7446 | } | |
7447 | } | |
c906108c SS |
7448 | |
7449 | if (save_selected_frame_level >= 0) | |
c6902688 | 7450 | select_frame (save_selected_frame, save_selected_frame_level); |
c906108c SS |
7451 | value_free_to_mark (mark); |
7452 | } | |
7453 | if (modify_breakpoint_hook) | |
7454 | modify_breakpoint_hook (bpt); | |
104c1213 | 7455 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7456 | } |
7457 | ||
7458 | void | |
fba45db2 | 7459 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7460 | { |
7461 | do_enable_breakpoint (bpt, bpt->disposition); | |
7462 | } | |
7463 | ||
7464 | /* The enable command enables the specified breakpoints (or all defined | |
7465 | breakpoints) so they once again become (or continue to be) effective | |
7466 | in stopping the inferior. */ | |
7467 | ||
7468 | /* ARGSUSED */ | |
7469 | static void | |
fba45db2 | 7470 | enable_command (char *args, int from_tty) |
c906108c SS |
7471 | { |
7472 | register struct breakpoint *bpt; | |
7473 | if (args == 0) | |
7474 | ALL_BREAKPOINTS (bpt) | |
7475 | switch (bpt->type) | |
c5aa993b JM |
7476 | { |
7477 | case bp_none: | |
53a5351d JM |
7478 | warning ("attempted to enable apparently deleted breakpoint #%d?", |
7479 | bpt->number); | |
c5aa993b JM |
7480 | continue; |
7481 | case bp_breakpoint: | |
7482 | case bp_catch_load: | |
7483 | case bp_catch_unload: | |
7484 | case bp_catch_fork: | |
7485 | case bp_catch_vfork: | |
7486 | case bp_catch_exec: | |
7487 | case bp_catch_catch: | |
7488 | case bp_catch_throw: | |
7489 | case bp_hardware_breakpoint: | |
7490 | case bp_watchpoint: | |
7491 | case bp_hardware_watchpoint: | |
7492 | case bp_read_watchpoint: | |
7493 | case bp_access_watchpoint: | |
7494 | enable_breakpoint (bpt); | |
7495 | default: | |
7496 | continue; | |
7497 | } | |
c906108c SS |
7498 | else |
7499 | map_breakpoint_numbers (args, enable_breakpoint); | |
7500 | } | |
7501 | ||
7502 | static void | |
fba45db2 | 7503 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7504 | { |
7505 | do_enable_breakpoint (bpt, disable); | |
7506 | } | |
7507 | ||
7508 | /* ARGSUSED */ | |
7509 | static void | |
fba45db2 | 7510 | enable_once_command (char *args, int from_tty) |
c906108c SS |
7511 | { |
7512 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
7513 | } | |
7514 | ||
7515 | static void | |
fba45db2 | 7516 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7517 | { |
7518 | do_enable_breakpoint (bpt, del); | |
7519 | } | |
7520 | ||
7521 | /* ARGSUSED */ | |
7522 | static void | |
fba45db2 | 7523 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
7524 | { |
7525 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
7526 | } | |
7527 | \f | |
7528 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ | |
7529 | ||
7530 | struct symtabs_and_lines | |
fba45db2 | 7531 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
7532 | { |
7533 | struct symtabs_and_lines sals; | |
7534 | if (string == 0) | |
7535 | error ("Empty line specification."); | |
7536 | if (default_breakpoint_valid) | |
7537 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
7538 | default_breakpoint_symtab, |
7539 | default_breakpoint_line, | |
c5aa993b | 7540 | (char ***) NULL); |
c906108c SS |
7541 | else |
7542 | sals = decode_line_1 (&string, funfirstline, | |
c5aa993b | 7543 | (struct symtab *) NULL, 0, (char ***) NULL); |
c906108c SS |
7544 | if (*string) |
7545 | error ("Junk at end of line specification: %s", string); | |
7546 | return sals; | |
7547 | } | |
7548 | \f | |
7549 | void | |
fba45db2 | 7550 | _initialize_breakpoint (void) |
c906108c SS |
7551 | { |
7552 | struct cmd_list_element *c; | |
7553 | ||
7554 | breakpoint_chain = 0; | |
7555 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
7556 | before a breakpoint is set. */ | |
7557 | breakpoint_count = 0; | |
7558 | ||
7559 | add_com ("ignore", class_breakpoint, ignore_command, | |
7560 | "Set ignore-count of breakpoint number N to COUNT.\n\ | |
7561 | Usage is `ignore N COUNT'."); | |
7562 | if (xdb_commands) | |
c5aa993b | 7563 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c SS |
7564 | |
7565 | add_com ("commands", class_breakpoint, commands_command, | |
7566 | "Set commands to be executed when a breakpoint is hit.\n\ | |
7567 | Give breakpoint number as argument after \"commands\".\n\ | |
7568 | With no argument, the targeted breakpoint is the last one set.\n\ | |
7569 | The commands themselves follow starting on the next line.\n\ | |
7570 | Type a line containing \"end\" to indicate the end of them.\n\ | |
7571 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
7572 | then no output is printed when it is hit, except what the commands print."); | |
7573 | ||
7574 | add_com ("condition", class_breakpoint, condition_command, | |
7575 | "Specify breakpoint number N to break only if COND is true.\n\ | |
7576 | Usage is `condition N COND', where N is an integer and COND is an\n\ | |
7577 | expression to be evaluated whenever breakpoint N is reached. "); | |
7578 | ||
7579 | add_com ("tbreak", class_breakpoint, tbreak_command, | |
7580 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
7581 | Like \"break\" except the breakpoint is only temporary,\n\ | |
7582 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
7583 | by using \"enable delete\" on the breakpoint number."); | |
c5aa993b JM |
7584 | add_com ("txbreak", class_breakpoint, tbreak_at_finish_command, |
7585 | "Set temporary breakpoint at procedure exit. Either there should\n\ | |
c906108c SS |
7586 | be no argument or the argument must be a depth.\n"); |
7587 | ||
7588 | add_com ("hbreak", class_breakpoint, hbreak_command, | |
7589 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
7590 | Like \"break\" except the breakpoint requires hardware support,\n\ | |
7591 | some target hardware may not have this support."); | |
7592 | ||
7593 | add_com ("thbreak", class_breakpoint, thbreak_command, | |
7594 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
7595 | Like \"hbreak\" except the breakpoint is only temporary,\n\ | |
7596 | so it will be deleted when hit."); | |
7597 | ||
7598 | add_prefix_cmd ("enable", class_breakpoint, enable_command, | |
7599 | "Enable some breakpoints.\n\ | |
7600 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
7601 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7602 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7603 | With a subcommand you can enable temporarily.", | |
7604 | &enablelist, "enable ", 1, &cmdlist); | |
7605 | if (xdb_commands) | |
c5aa993b JM |
7606 | add_com ("ab", class_breakpoint, enable_command, |
7607 | "Enable some breakpoints.\n\ | |
c906108c SS |
7608 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7609 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7610 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7611 | With a subcommand you can enable temporarily."); | |
7612 | ||
7613 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
7614 | ||
7615 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, | |
c5aa993b | 7616 | "Enable some breakpoints.\n\ |
c906108c SS |
7617 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7618 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7619 | May be abbreviated to simply \"enable\".\n", | |
c5aa993b | 7620 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c SS |
7621 | |
7622 | add_cmd ("once", no_class, enable_once_command, | |
7623 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7624 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7625 | &enablebreaklist); | |
7626 | ||
7627 | add_cmd ("delete", no_class, enable_delete_command, | |
7628 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7629 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7630 | &enablebreaklist); | |
7631 | ||
7632 | add_cmd ("delete", no_class, enable_delete_command, | |
7633 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7634 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7635 | &enablelist); | |
7636 | ||
7637 | add_cmd ("once", no_class, enable_once_command, | |
7638 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7639 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7640 | &enablelist); | |
7641 | ||
7642 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
c5aa993b | 7643 | "Disable some breakpoints.\n\ |
c906108c SS |
7644 | Arguments are breakpoint numbers with spaces in between.\n\ |
7645 | To disable all breakpoints, give no argument.\n\ | |
7646 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
7647 | &disablelist, "disable ", 1, &cmdlist); | |
7648 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
7649 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
7650 | if (xdb_commands) | |
c5aa993b JM |
7651 | add_com ("sb", class_breakpoint, disable_command, |
7652 | "Disable some breakpoints.\n\ | |
c906108c SS |
7653 | Arguments are breakpoint numbers with spaces in between.\n\ |
7654 | To disable all breakpoints, give no argument.\n\ | |
7655 | A disabled breakpoint is not forgotten, but has no effect until reenabled."); | |
7656 | ||
7657 | add_cmd ("breakpoints", class_alias, disable_command, | |
7658 | "Disable some breakpoints.\n\ | |
7659 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7660 | To disable all breakpoints, give no argument.\n\ | |
7661 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
7662 | This command may be abbreviated \"disable\".", | |
7663 | &disablelist); | |
7664 | ||
7665 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
c5aa993b | 7666 | "Delete some breakpoints or auto-display expressions.\n\ |
c906108c SS |
7667 | Arguments are breakpoint numbers with spaces in between.\n\ |
7668 | To delete all breakpoints, give no argument.\n\ | |
7669 | \n\ | |
7670 | Also a prefix command for deletion of other GDB objects.\n\ | |
7671 | The \"unset\" command is also an alias for \"delete\".", | |
7672 | &deletelist, "delete ", 1, &cmdlist); | |
7673 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7674 | if (xdb_commands) | |
7675 | add_com ("db", class_breakpoint, delete_command, | |
c5aa993b | 7676 | "Delete some breakpoints.\n\ |
c906108c SS |
7677 | Arguments are breakpoint numbers with spaces in between.\n\ |
7678 | To delete all breakpoints, give no argument.\n"); | |
7679 | ||
7680 | add_cmd ("breakpoints", class_alias, delete_command, | |
7681 | "Delete some breakpoints or auto-display expressions.\n\ | |
7682 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7683 | To delete all breakpoints, give no argument.\n\ | |
7684 | This command may be abbreviated \"delete\".", | |
7685 | &deletelist); | |
7686 | ||
7687 | add_com ("clear", class_breakpoint, clear_command, | |
7688 | concat ("Clear breakpoint at specified line or function.\n\ | |
7689 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
7690 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
7691 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
7692 | If an address is specified, breakpoints at that address are cleared.\n\n", | |
c5aa993b | 7693 | "With no argument, clears all breakpoints in the line that the selected frame\n\ |
c906108c SS |
7694 | is executing in.\n\ |
7695 | \n\ | |
7696 | See also the \"delete\" command which clears breakpoints by number.", NULL)); | |
7697 | ||
7698 | add_com ("break", class_breakpoint, break_command, | |
7699 | concat ("Set breakpoint at specified line or function.\n\ | |
7700 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
7701 | If line number is specified, break at start of code for that line.\n\ | |
7702 | If function is specified, break at start of code for that function.\n\ | |
7703 | If an address is specified, break at that exact address.\n", | |
c5aa993b | 7704 | "With no arg, uses current execution address of selected stack frame.\n\ |
c906108c SS |
7705 | This is useful for breaking on return to a stack frame.\n\ |
7706 | \n\ | |
7707 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7708 | \n\ | |
7709 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
7710 | add_com_alias ("b", "break", class_run, 1); | |
7711 | add_com_alias ("br", "break", class_run, 1); | |
7712 | add_com_alias ("bre", "break", class_run, 1); | |
7713 | add_com_alias ("brea", "break", class_run, 1); | |
7714 | ||
c5aa993b JM |
7715 | add_com ("xbreak", class_breakpoint, break_at_finish_command, |
7716 | concat ("Set breakpoint at procedure exit. \n\ | |
c906108c SS |
7717 | Argument may be function name, or \"*\" and an address.\n\ |
7718 | If function is specified, break at end of code for that function.\n\ | |
7719 | If an address is specified, break at the end of the function that contains \n\ | |
7720 | that exact address.\n", | |
c5aa993b | 7721 | "With no arg, uses current execution address of selected stack frame.\n\ |
c906108c SS |
7722 | This is useful for breaking on return to a stack frame.\n\ |
7723 | \n\ | |
7724 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7725 | \n\ | |
7726 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
7727 | add_com_alias ("xb", "xbreak", class_breakpoint, 1); | |
7728 | add_com_alias ("xbr", "xbreak", class_breakpoint, 1); | |
7729 | add_com_alias ("xbre", "xbreak", class_breakpoint, 1); | |
7730 | add_com_alias ("xbrea", "xbreak", class_breakpoint, 1); | |
7731 | ||
7732 | if (xdb_commands) | |
7733 | { | |
7734 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
7735 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
7736 | add_com ("bx", class_breakpoint, break_at_finish_at_depth_command, | |
c5aa993b | 7737 | "Set breakpoint at procedure exit. Either there should\n\ |
c906108c SS |
7738 | be no argument or the argument must be a depth.\n"); |
7739 | } | |
7740 | ||
7741 | if (dbx_commands) | |
7742 | { | |
c5aa993b JM |
7743 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, |
7744 | "Break in function/address or break at a line in the current file.", | |
7745 | &stoplist, "stop ", 1, &cmdlist); | |
7746 | add_cmd ("in", class_breakpoint, stopin_command, | |
7747 | "Break in function or address.\n", &stoplist); | |
7748 | add_cmd ("at", class_breakpoint, stopat_command, | |
7749 | "Break at a line in the current file.\n", &stoplist); | |
7750 | add_com ("status", class_info, breakpoints_info, | |
7751 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7752 | The \"Type\" column indicates one of:\n\ |
7753 | \tbreakpoint - normal breakpoint\n\ | |
7754 | \twatchpoint - watchpoint\n\ | |
7755 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7756 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7757 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7758 | address and file/line number respectively.\n\n", | |
c5aa993b | 7759 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7760 | are set to the address of the last breakpoint listed.\n\n\ |
7761 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7762 | breakpoint set.", NULL)); | |
7763 | } | |
7764 | ||
7765 | add_info ("breakpoints", breakpoints_info, | |
7766 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
7767 | The \"Type\" column indicates one of:\n\ | |
7768 | \tbreakpoint - normal breakpoint\n\ | |
7769 | \twatchpoint - watchpoint\n\ | |
7770 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7771 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7772 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7773 | address and file/line number respectively.\n\n", | |
c5aa993b | 7774 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7775 | are set to the address of the last breakpoint listed.\n\n\ |
7776 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7777 | breakpoint set.", NULL)); | |
7778 | ||
7779 | if (xdb_commands) | |
c5aa993b JM |
7780 | add_com ("lb", class_breakpoint, breakpoints_info, |
7781 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7782 | The \"Type\" column indicates one of:\n\ |
7783 | \tbreakpoint - normal breakpoint\n\ | |
7784 | \twatchpoint - watchpoint\n\ | |
7785 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7786 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7787 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7788 | address and file/line number respectively.\n\n", | |
c5aa993b | 7789 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7790 | are set to the address of the last breakpoint listed.\n\n\ |
7791 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7792 | breakpoint set.", NULL)); | |
7793 | ||
c906108c | 7794 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, |
c5aa993b | 7795 | concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
7796 | The \"Type\" column indicates one of:\n\ |
7797 | \tbreakpoint - normal breakpoint\n\ | |
7798 | \twatchpoint - watchpoint\n\ | |
7799 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
7800 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
7801 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
7802 | \tfinish - internal breakpoint used by the \"finish\" command\n", | |
c5aa993b | 7803 | "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
c906108c SS |
7804 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
7805 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7806 | address and file/line number respectively.\n\n", | |
c5aa993b | 7807 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7808 | are set to the address of the last breakpoint listed.\n\n\ |
7809 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7810 | breakpoint set.", NULL), | |
7811 | &maintenanceinfolist); | |
7812 | ||
c906108c | 7813 | add_com ("catch", class_breakpoint, catch_command, |
c5aa993b | 7814 | "Set catchpoints to catch events.\n\ |
c906108c SS |
7815 | Raised signals may be caught:\n\ |
7816 | \tcatch signal - all signals\n\ | |
7817 | \tcatch signal <signame> - a particular signal\n\ | |
7818 | Raised exceptions may be caught:\n\ | |
7819 | \tcatch throw - all exceptions, when thrown\n\ | |
7820 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
7821 | \tcatch catch - all exceptions, when caught\n\ | |
7822 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
7823 | Thread or process events may be caught:\n\ | |
7824 | \tcatch thread_start - any threads, just after creation\n\ | |
7825 | \tcatch thread_exit - any threads, just before expiration\n\ | |
7826 | \tcatch thread_join - any threads, just after joins\n\ | |
7827 | Process events may be caught:\n\ | |
7828 | \tcatch start - any processes, just after creation\n\ | |
7829 | \tcatch exit - any processes, just before expiration\n\ | |
7830 | \tcatch fork - calls to fork()\n\ | |
7831 | \tcatch vfork - calls to vfork()\n\ | |
7832 | \tcatch exec - calls to exec()\n\ | |
7833 | Dynamically-linked library events may be caught:\n\ | |
7834 | \tcatch load - loads of any library\n\ | |
7835 | \tcatch load <libname> - loads of a particular library\n\ | |
7836 | \tcatch unload - unloads of any library\n\ | |
7837 | \tcatch unload <libname> - unloads of a particular library\n\ | |
7838 | The act of your program's execution stopping may also be caught:\n\ | |
7839 | \tcatch stop\n\n\ | |
7840 | C++ exceptions may be caught:\n\ | |
7841 | \tcatch throw - all exceptions, when thrown\n\ | |
7842 | \tcatch catch - all exceptions, when caught\n\ | |
7843 | \n\ | |
7844 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ | |
7845 | after a fork or vfork is caught.\n\n\ | |
7846 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
c5aa993b | 7847 | |
c906108c | 7848 | add_com ("tcatch", class_breakpoint, tcatch_command, |
c5aa993b | 7849 | "Set temporary catchpoints to catch events.\n\ |
c906108c SS |
7850 | Args like \"catch\" command.\n\ |
7851 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
7852 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
7853 | by using \"enable delete\" on the catchpoint number."); | |
c5aa993b JM |
7854 | |
7855 | add_com ("watch", class_breakpoint, watch_command, | |
c906108c SS |
7856 | "Set a watchpoint for an expression.\n\ |
7857 | A watchpoint stops execution of your program whenever the value of\n\ | |
7858 | an expression changes."); | |
7859 | ||
7860 | add_com ("rwatch", class_breakpoint, rwatch_command, | |
7861 | "Set a read watchpoint for an expression.\n\ | |
7862 | A watchpoint stops execution of your program whenever the value of\n\ | |
7863 | an expression is read."); | |
7864 | ||
7865 | add_com ("awatch", class_breakpoint, awatch_command, | |
7866 | "Set a watchpoint for an expression.\n\ | |
7867 | A watchpoint stops execution of your program whenever the value of\n\ | |
7868 | an expression is either read or written."); | |
7869 | ||
7870 | add_info ("watchpoints", breakpoints_info, | |
7871 | "Synonym for ``info breakpoints''."); | |
7872 | ||
7873 | ||
7874 | c = add_set_cmd ("can-use-hw-watchpoints", class_support, var_zinteger, | |
c5aa993b JM |
7875 | (char *) &can_use_hw_watchpoints, |
7876 | "Set debugger's willingness to use watchpoint hardware.\n\ | |
c906108c SS |
7877 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
7878 | such is available. (However, any hardware watchpoints that were\n\ | |
7879 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
7880 | hardware.)", | |
c5aa993b | 7881 | &setlist); |
c906108c SS |
7882 | add_show_from_set (c, &showlist); |
7883 | ||
7884 | can_use_hw_watchpoints = 1; | |
7885 | } |