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 | |
a14ed312 | 94 | struct breakpoint *set_raw_breakpoint (struct symtab_and_line); |
c906108c | 95 | |
a14ed312 | 96 | static void check_duplicates (CORE_ADDR, asection *); |
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: | |
991 | val = target_insert_fork_catchpoint (inferior_pid); | |
992 | break; | |
993 | case bp_catch_vfork: | |
994 | val = target_insert_vfork_catchpoint (inferior_pid); | |
995 | break; | |
996 | case bp_catch_exec: | |
997 | val = target_insert_exec_catchpoint (inferior_pid); | |
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; | |
c5aa993b | 1064 | int saved_inferior_pid = inferior_pid; |
c906108c | 1065 | |
53a5351d JM |
1066 | /* FIXME: use a cleanup, to insure that inferior_pid gets replaced! */ |
1067 | inferior_pid = pid; /* Because remove_breakpoint will use this global. */ | |
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 | { | |
1079 | inferior_pid = saved_inferior_pid; | |
1080 | return val; | |
1081 | } | |
1082 | } | |
1083 | } | |
c906108c SS |
1084 | inferior_pid = saved_inferior_pid; |
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 | |
1147 | automagically. Certainly on HP-UX that's true. */ | |
1148 | if ((b->type == bp_catch_exec) || | |
1149 | (b->type == bp_catch_vfork) || | |
1150 | (b->type == bp_catch_fork)) | |
1151 | { | |
1152 | b->address = (CORE_ADDR) NULL; | |
1153 | continue; | |
1154 | } | |
1155 | ||
1156 | /* bp_finish is a special case. The only way we ought to be able | |
1157 | to see one of these when an exec() has happened, is if the user | |
1158 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1159 | carries them to the call-site of the current callee, by setting | |
1160 | a temporary bp there and resuming. But in this case, the finish | |
1161 | will carry them entirely through the vfork & exec. | |
1162 | ||
1163 | We don't want to allow a bp_finish to remain inserted now. But | |
1164 | we can't safely delete it, 'cause finish_command has a handle to | |
1165 | the bp on a bpstat, and will later want to delete it. There's a | |
1166 | chance (and I've seen it happen) that if we delete the bp_finish | |
1167 | here, that its storage will get reused by the time finish_command | |
1168 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1169 | We really must allow finish_command to delete a bp_finish. | |
1170 | ||
53a5351d JM |
1171 | In the absense of a general solution for the "how do we know |
1172 | it's safe to delete something others may have handles to?" | |
1173 | problem, what we'll do here is just uninsert the bp_finish, and | |
1174 | let finish_command delete it. | |
1175 | ||
1176 | (We know the bp_finish is "doomed" in the sense that it's | |
1177 | momentary, and will be deleted as soon as finish_command sees | |
1178 | the inferior stopped. So it doesn't matter that the bp's | |
1179 | address is probably bogus in the new a.out, unlike e.g., the | |
1180 | solib breakpoints.) */ | |
c5aa993b | 1181 | |
c5aa993b JM |
1182 | if (b->type == bp_finish) |
1183 | { | |
1184 | continue; | |
1185 | } | |
1186 | ||
1187 | /* Without a symbolic address, we have little hope of the | |
1188 | pre-exec() address meaning the same thing in the post-exec() | |
1189 | a.out. */ | |
1190 | if (b->addr_string == NULL) | |
1191 | { | |
1192 | delete_breakpoint (b); | |
1193 | continue; | |
1194 | } | |
1195 | ||
1196 | /* If this breakpoint has survived the above battery of checks, then | |
1197 | it must have a symbolic address. Be sure that it gets reevaluated | |
1198 | to a target address, rather than reusing the old evaluation. */ | |
1199 | b->address = (CORE_ADDR) NULL; | |
1200 | } | |
c906108c SS |
1201 | } |
1202 | ||
1203 | int | |
fba45db2 | 1204 | detach_breakpoints (int pid) |
c906108c SS |
1205 | { |
1206 | register struct breakpoint *b; | |
1207 | int val; | |
c5aa993b JM |
1208 | int saved_inferior_pid = inferior_pid; |
1209 | ||
c906108c SS |
1210 | if (pid == inferior_pid) |
1211 | error ("Cannot detach breakpoints of inferior_pid"); | |
c5aa993b | 1212 | |
53a5351d JM |
1213 | /* FIXME: use a cleanup, to insure that inferior_pid gets replaced! */ |
1214 | inferior_pid = pid; /* Because remove_breakpoint will use this global. */ | |
c906108c | 1215 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1216 | { |
1217 | if (b->inserted) | |
1218 | { | |
1219 | val = remove_breakpoint (b, mark_inserted); | |
1220 | if (val != 0) | |
1221 | { | |
1222 | inferior_pid = saved_inferior_pid; | |
1223 | return val; | |
1224 | } | |
1225 | } | |
1226 | } | |
c906108c SS |
1227 | inferior_pid = saved_inferior_pid; |
1228 | return 0; | |
1229 | } | |
1230 | ||
1231 | static int | |
fba45db2 | 1232 | remove_breakpoint (struct breakpoint *b, insertion_state_t is) |
c906108c SS |
1233 | { |
1234 | int val; | |
c5aa993b | 1235 | |
c2c6d25f JM |
1236 | if (b->enable == permanent) |
1237 | /* Permanent breakpoints cannot be inserted or removed. */ | |
1238 | return 0; | |
1239 | ||
c906108c | 1240 | if (b->type == bp_none) |
53a5351d JM |
1241 | warning ("attempted to remove apparently deleted breakpoint #%d?", |
1242 | b->number); | |
c906108c SS |
1243 | |
1244 | if (b->type != bp_watchpoint | |
1245 | && b->type != bp_hardware_watchpoint | |
1246 | && b->type != bp_read_watchpoint | |
1247 | && b->type != bp_access_watchpoint | |
1248 | && b->type != bp_catch_fork | |
1249 | && b->type != bp_catch_vfork | |
1250 | && b->type != bp_catch_exec | |
1251 | && b->type != bp_catch_catch | |
1252 | && b->type != bp_catch_throw) | |
c906108c SS |
1253 | { |
1254 | if (b->type == bp_hardware_breakpoint) | |
c5aa993b | 1255 | val = target_remove_hw_breakpoint (b->address, b->shadow_contents); |
c906108c SS |
1256 | else |
1257 | { | |
1258 | /* Check to see if breakpoint is in an overlay section; | |
1259 | if so, we should remove the breakpoint at the LMA address. | |
1260 | If that is not equal to the raw address, then we should | |
7e73cedf | 1261 | presumably remove the breakpoint there as well. */ |
c5aa993b | 1262 | if (overlay_debugging && b->section && |
c906108c SS |
1263 | section_is_overlay (b->section)) |
1264 | { | |
1265 | CORE_ADDR addr; | |
1266 | ||
1267 | addr = overlay_unmapped_address (b->address, b->section); | |
1268 | val = target_remove_breakpoint (addr, b->shadow_contents); | |
1269 | /* This would be the time to check val, to see if the | |
c5aa993b JM |
1270 | shadow breakpoint write to the load address succeeded. |
1271 | However, this might be an ordinary occurrance, eg. if | |
1272 | the unmapped overlay is in ROM. */ | |
1273 | val = 0; /* in case unmapped address failed */ | |
c906108c | 1274 | if (section_is_mapped (b->section)) |
c5aa993b | 1275 | val = target_remove_breakpoint (b->address, |
c906108c SS |
1276 | b->shadow_contents); |
1277 | } | |
c5aa993b JM |
1278 | else /* ordinary (non-overlay) address */ |
1279 | val = target_remove_breakpoint (b->address, b->shadow_contents); | |
c906108c SS |
1280 | } |
1281 | if (val) | |
1282 | return val; | |
1283 | b->inserted = (is == mark_inserted); | |
1284 | } | |
1285 | else if ((b->type == bp_hardware_watchpoint || | |
c5aa993b JM |
1286 | b->type == bp_read_watchpoint || |
1287 | b->type == bp_access_watchpoint) | |
c906108c | 1288 | && b->enable == enabled |
c5aa993b | 1289 | && !b->duplicate) |
c906108c SS |
1290 | { |
1291 | value_ptr v, n; | |
c5aa993b | 1292 | |
c906108c SS |
1293 | b->inserted = (is == mark_inserted); |
1294 | /* Walk down the saved value chain. */ | |
1295 | for (v = b->val_chain; v; v = v->next) | |
1296 | { | |
1297 | /* For each memory reference remove the watchpoint | |
1298 | at that address. */ | |
5c44784c JM |
1299 | if (VALUE_LVAL (v) == lval_memory |
1300 | && ! VALUE_LAZY (v)) | |
c906108c | 1301 | { |
2e70b7b9 MS |
1302 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
1303 | ||
1304 | if (v == b->val_chain | |
1305 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
1306 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1307 | { | |
1308 | CORE_ADDR addr; | |
1309 | int len, type; | |
1310 | ||
1311 | addr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
1312 | len = TYPE_LENGTH (VALUE_TYPE (v)); | |
1313 | type = hw_write; | |
1314 | if (b->type == bp_read_watchpoint) | |
1315 | type = hw_read; | |
1316 | else if (b->type == bp_access_watchpoint) | |
1317 | type = hw_access; | |
1318 | ||
1319 | val = target_remove_watchpoint (addr, len, type); | |
1320 | if (val == -1) | |
1321 | b->inserted = 1; | |
1322 | val = 0; | |
1323 | } | |
c906108c SS |
1324 | } |
1325 | } | |
1326 | /* Failure to remove any of the hardware watchpoints comes here. */ | |
1327 | if ((is == mark_uninserted) && (b->inserted)) | |
53a5351d | 1328 | warning ("Could not remove hardware watchpoint %d.", |
c906108c | 1329 | b->number); |
c5aa993b | 1330 | |
c906108c | 1331 | /* Free the saved value chain. We will construct a new one |
c5aa993b | 1332 | the next time the watchpoint is inserted. */ |
c906108c SS |
1333 | for (v = b->val_chain; v; v = n) |
1334 | { | |
1335 | n = v->next; | |
1336 | value_free (v); | |
1337 | } | |
1338 | b->val_chain = NULL; | |
1339 | } | |
1340 | else if ((b->type == bp_catch_fork || | |
c5aa993b JM |
1341 | b->type == bp_catch_vfork || |
1342 | b->type == bp_catch_exec) | |
c906108c | 1343 | && b->enable == enabled |
c5aa993b | 1344 | && !b->duplicate) |
c906108c SS |
1345 | { |
1346 | val = -1; | |
1347 | switch (b->type) | |
c5aa993b JM |
1348 | { |
1349 | case bp_catch_fork: | |
1350 | val = target_remove_fork_catchpoint (inferior_pid); | |
1351 | break; | |
1352 | case bp_catch_vfork: | |
1353 | val = target_remove_vfork_catchpoint (inferior_pid); | |
1354 | break; | |
1355 | case bp_catch_exec: | |
1356 | val = target_remove_exec_catchpoint (inferior_pid); | |
1357 | break; | |
ac9a91a7 | 1358 | default: |
53a5351d | 1359 | warning ("Internal error, %s line %d.", __FILE__, __LINE__); |
ac9a91a7 | 1360 | break; |
c5aa993b | 1361 | } |
c906108c SS |
1362 | if (val) |
1363 | return val; | |
1364 | b->inserted = (is == mark_inserted); | |
1365 | } | |
1366 | else if ((b->type == bp_catch_catch || | |
c5aa993b JM |
1367 | b->type == bp_catch_throw) |
1368 | && b->enable == enabled | |
1369 | && !b->duplicate) | |
c906108c SS |
1370 | { |
1371 | ||
c5aa993b | 1372 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1373 | if (val) |
c5aa993b | 1374 | return val; |
c906108c SS |
1375 | b->inserted = (is == mark_inserted); |
1376 | } | |
1377 | else if (ep_is_exception_catchpoint (b) | |
c5aa993b JM |
1378 | && b->inserted /* sometimes previous insert doesn't happen */ |
1379 | && b->enable == enabled | |
1380 | && !b->duplicate) | |
c906108c SS |
1381 | { |
1382 | ||
c5aa993b | 1383 | val = target_remove_breakpoint (b->address, b->shadow_contents); |
c906108c | 1384 | if (val) |
c5aa993b JM |
1385 | return val; |
1386 | ||
c906108c SS |
1387 | b->inserted = (is == mark_inserted); |
1388 | } | |
1389 | ||
1390 | return 0; | |
1391 | } | |
1392 | ||
1393 | /* Clear the "inserted" flag in all breakpoints. */ | |
1394 | ||
1395 | void | |
fba45db2 | 1396 | mark_breakpoints_out (void) |
c906108c SS |
1397 | { |
1398 | register struct breakpoint *b; | |
1399 | ||
1400 | ALL_BREAKPOINTS (b) | |
1401 | b->inserted = 0; | |
1402 | } | |
1403 | ||
53a5351d JM |
1404 | /* Clear the "inserted" flag in all breakpoints and delete any |
1405 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1406 | |
1407 | Plus other such housekeeping that has to be done for breakpoints | |
1408 | between runs. | |
1409 | ||
53a5351d JM |
1410 | Note: this function gets called at the end of a run (by |
1411 | generic_mourn_inferior) and when a run begins (by | |
1412 | init_wait_for_inferior). */ | |
c906108c SS |
1413 | |
1414 | ||
1415 | ||
1416 | void | |
fba45db2 | 1417 | breakpoint_init_inferior (enum inf_context context) |
c906108c SS |
1418 | { |
1419 | register struct breakpoint *b, *temp; | |
1420 | static int warning_needed = 0; | |
1421 | ||
1422 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1423 | { |
1424 | b->inserted = 0; | |
c906108c | 1425 | |
c5aa993b JM |
1426 | switch (b->type) |
1427 | { | |
1428 | case bp_call_dummy: | |
1429 | case bp_watchpoint_scope: | |
c906108c | 1430 | |
c5aa993b JM |
1431 | /* If the call dummy breakpoint is at the entry point it will |
1432 | cause problems when the inferior is rerun, so we better | |
1433 | get rid of it. | |
c906108c | 1434 | |
c5aa993b JM |
1435 | Also get rid of scope breakpoints. */ |
1436 | delete_breakpoint (b); | |
1437 | break; | |
c906108c | 1438 | |
c5aa993b JM |
1439 | case bp_watchpoint: |
1440 | case bp_hardware_watchpoint: | |
1441 | case bp_read_watchpoint: | |
1442 | case bp_access_watchpoint: | |
c906108c | 1443 | |
c5aa993b JM |
1444 | /* Likewise for watchpoints on local expressions. */ |
1445 | if (b->exp_valid_block != NULL) | |
1446 | delete_breakpoint (b); | |
1447 | break; | |
1448 | default: | |
1449 | /* Likewise for exception catchpoints in dynamic-linked | |
1450 | executables where required */ | |
1451 | if (ep_is_exception_catchpoint (b) && | |
1452 | exception_catchpoints_are_fragile) | |
1453 | { | |
1454 | warning_needed = 1; | |
c906108c | 1455 | delete_breakpoint (b); |
c5aa993b JM |
1456 | } |
1457 | break; | |
1458 | } | |
1459 | } | |
c906108c SS |
1460 | |
1461 | if (exception_catchpoints_are_fragile) | |
1462 | exception_support_initialized = 0; | |
1463 | ||
c5aa993b | 1464 | /* Don't issue the warning unless it's really needed... */ |
c906108c SS |
1465 | if (warning_needed && (context != inf_exited)) |
1466 | { | |
53a5351d JM |
1467 | warning ("Exception catchpoints from last run were deleted."); |
1468 | warning ("You must reinsert them explicitly."); | |
c906108c | 1469 | warning_needed = 0; |
c5aa993b | 1470 | } |
c906108c SS |
1471 | } |
1472 | ||
c2c6d25f JM |
1473 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1474 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1475 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1476 | permanent breakpoint. | |
1477 | - When continuing from a location with an ordinary breakpoint, we | |
1478 | actually single step once before calling insert_breakpoints. | |
1479 | - When continuing from a localion with a permanent breakpoint, we | |
1480 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1481 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1482 | |
c2c6d25f | 1483 | enum breakpoint_here |
fba45db2 | 1484 | breakpoint_here_p (CORE_ADDR pc) |
c906108c SS |
1485 | { |
1486 | register struct breakpoint *b; | |
c2c6d25f | 1487 | int any_breakpoint_here = 0; |
c906108c SS |
1488 | |
1489 | ALL_BREAKPOINTS (b) | |
c2c6d25f JM |
1490 | if ((b->enable == enabled |
1491 | || b->enable == permanent) | |
c906108c | 1492 | && b->address == pc) /* bp is enabled and matches pc */ |
c2c6d25f JM |
1493 | { |
1494 | if (overlay_debugging && | |
1495 | section_is_overlay (b->section) && | |
1496 | !section_is_mapped (b->section)) | |
1497 | continue; /* unmapped overlay -- can't be a match */ | |
1498 | else if (b->enable == permanent) | |
1499 | return permanent_breakpoint_here; | |
1500 | else | |
1501 | any_breakpoint_here = 1; | |
1502 | } | |
c906108c | 1503 | |
c2c6d25f | 1504 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1505 | } |
1506 | ||
c2c6d25f | 1507 | |
53a5351d JM |
1508 | /* breakpoint_inserted_here_p (PC) is just like breakpoint_here_p(), |
1509 | but it only returns true if there is actually a breakpoint inserted | |
1510 | at PC. */ | |
c906108c SS |
1511 | |
1512 | int | |
fba45db2 | 1513 | breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c SS |
1514 | { |
1515 | register struct breakpoint *b; | |
1516 | ||
1517 | ALL_BREAKPOINTS (b) | |
1518 | if (b->inserted | |
1519 | && b->address == pc) /* bp is inserted and matches pc */ | |
c5aa993b JM |
1520 | { |
1521 | if (overlay_debugging && | |
1522 | section_is_overlay (b->section) && | |
1523 | !section_is_mapped (b->section)) | |
1524 | continue; /* unmapped overlay -- can't be a match */ | |
1525 | else | |
1526 | return 1; | |
1527 | } | |
c906108c SS |
1528 | |
1529 | return 0; | |
1530 | } | |
1531 | ||
53a5351d JM |
1532 | /* Return nonzero if FRAME is a dummy frame. We can't use |
1533 | PC_IN_CALL_DUMMY because figuring out the saved SP would take too | |
1534 | much time, at least using get_saved_register on the 68k. This | |
1535 | means that for this function to work right a port must use the | |
1536 | bp_call_dummy breakpoint. */ | |
c906108c SS |
1537 | |
1538 | int | |
fba45db2 | 1539 | frame_in_dummy (struct frame_info *frame) |
c906108c | 1540 | { |
c906108c SS |
1541 | struct breakpoint *b; |
1542 | ||
c5aa993b | 1543 | if (!CALL_DUMMY_P) |
7a292a7a SS |
1544 | return 0; |
1545 | ||
1546 | if (USE_GENERIC_DUMMY_FRAMES) | |
1547 | return generic_pc_in_call_dummy (frame->pc, frame->frame, frame->frame); | |
c5aa993b | 1548 | |
c906108c | 1549 | ALL_BREAKPOINTS (b) |
c5aa993b JM |
1550 | { |
1551 | if (b->type == bp_call_dummy | |
1552 | && b->frame == frame->frame | |
1553 | /* We need to check the PC as well as the frame on the sparc, | |
1554 | for signals.exp in the testsuite. */ | |
1555 | && (frame->pc | |
1556 | >= (b->address | |
1557 | - SIZEOF_CALL_DUMMY_WORDS / sizeof (LONGEST) * REGISTER_SIZE)) | |
1558 | && frame->pc <= b->address) | |
1559 | return 1; | |
1560 | } | |
c906108c SS |
1561 | return 0; |
1562 | } | |
1563 | ||
2c8f79c2 MS |
1564 | /* breakpoint_thread_match (PC, PID) returns true if the breakpoint at |
1565 | PC is valid for process/thread PID. */ | |
c906108c SS |
1566 | |
1567 | int | |
fba45db2 | 1568 | breakpoint_thread_match (CORE_ADDR pc, int pid) |
c906108c SS |
1569 | { |
1570 | struct breakpoint *b; | |
1571 | int thread; | |
1572 | ||
1573 | thread = pid_to_thread_id (pid); | |
1574 | ||
1575 | ALL_BREAKPOINTS (b) | |
1576 | if (b->enable != disabled | |
1577 | && b->enable != shlib_disabled | |
1578 | && b->enable != call_disabled | |
1579 | && b->address == pc | |
1580 | && (b->thread == -1 || b->thread == thread)) | |
c5aa993b JM |
1581 | { |
1582 | if (overlay_debugging && | |
1583 | section_is_overlay (b->section) && | |
1584 | !section_is_mapped (b->section)) | |
1585 | continue; /* unmapped overlay -- can't be a match */ | |
1586 | else | |
1587 | return 1; | |
1588 | } | |
c906108c SS |
1589 | |
1590 | return 0; | |
1591 | } | |
c906108c | 1592 | \f |
c5aa993b | 1593 | |
c906108c SS |
1594 | /* bpstat stuff. External routines' interfaces are documented |
1595 | in breakpoint.h. */ | |
1596 | ||
1597 | int | |
fba45db2 | 1598 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c SS |
1599 | { |
1600 | return | |
1601 | (ep->type == bp_catch_load) | |
1602 | || (ep->type == bp_catch_unload) | |
1603 | || (ep->type == bp_catch_fork) | |
1604 | || (ep->type == bp_catch_vfork) | |
1605 | || (ep->type == bp_catch_exec) | |
1606 | || (ep->type == bp_catch_catch) | |
d85310f7 | 1607 | || (ep->type == bp_catch_throw); |
c906108c | 1608 | |
c5aa993b | 1609 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c | 1610 | } |
c5aa993b | 1611 | |
c906108c | 1612 | int |
fba45db2 | 1613 | ep_is_shlib_catchpoint (struct breakpoint *ep) |
c906108c SS |
1614 | { |
1615 | return | |
1616 | (ep->type == bp_catch_load) | |
d85310f7 | 1617 | || (ep->type == bp_catch_unload); |
c906108c SS |
1618 | } |
1619 | ||
1620 | int | |
fba45db2 | 1621 | ep_is_exception_catchpoint (struct breakpoint *ep) |
c906108c SS |
1622 | { |
1623 | return | |
1624 | (ep->type == bp_catch_catch) | |
d85310f7 | 1625 | || (ep->type == bp_catch_throw); |
c906108c SS |
1626 | } |
1627 | ||
1628 | /* Clear a bpstat so that it says we are not at any breakpoint. | |
1629 | Also free any storage that is part of a bpstat. */ | |
1630 | ||
1631 | void | |
fba45db2 | 1632 | bpstat_clear (bpstat *bsp) |
c906108c SS |
1633 | { |
1634 | bpstat p; | |
1635 | bpstat q; | |
1636 | ||
1637 | if (bsp == 0) | |
1638 | return; | |
1639 | p = *bsp; | |
1640 | while (p != NULL) | |
1641 | { | |
1642 | q = p->next; | |
1643 | if (p->old_val != NULL) | |
1644 | value_free (p->old_val); | |
b8c9b27d | 1645 | xfree (p); |
c906108c SS |
1646 | p = q; |
1647 | } | |
1648 | *bsp = NULL; | |
1649 | } | |
1650 | ||
1651 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1652 | is part of the bpstat is copied as well. */ | |
1653 | ||
1654 | bpstat | |
fba45db2 | 1655 | bpstat_copy (bpstat bs) |
c906108c SS |
1656 | { |
1657 | bpstat p = NULL; | |
1658 | bpstat tmp; | |
1659 | bpstat retval = NULL; | |
1660 | ||
1661 | if (bs == NULL) | |
1662 | return bs; | |
1663 | ||
1664 | for (; bs != NULL; bs = bs->next) | |
1665 | { | |
1666 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
1667 | memcpy (tmp, bs, sizeof (*tmp)); | |
1668 | if (p == NULL) | |
1669 | /* This is the first thing in the chain. */ | |
1670 | retval = tmp; | |
1671 | else | |
1672 | p->next = tmp; | |
1673 | p = tmp; | |
1674 | } | |
1675 | p->next = NULL; | |
1676 | return retval; | |
1677 | } | |
1678 | ||
1679 | /* Find the bpstat associated with this breakpoint */ | |
1680 | ||
1681 | bpstat | |
fba45db2 | 1682 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 1683 | { |
c5aa993b JM |
1684 | if (bsp == NULL) |
1685 | return NULL; | |
c906108c | 1686 | |
c5aa993b JM |
1687 | for (; bsp != NULL; bsp = bsp->next) |
1688 | { | |
1689 | if (bsp->breakpoint_at == breakpoint) | |
1690 | return bsp; | |
1691 | } | |
c906108c SS |
1692 | return NULL; |
1693 | } | |
1694 | ||
1695 | /* Find a step_resume breakpoint associated with this bpstat. | |
1696 | (If there are multiple step_resume bp's on the list, this function | |
1697 | will arbitrarily pick one.) | |
1698 | ||
1699 | It is an error to use this function if BPSTAT doesn't contain a | |
1700 | step_resume breakpoint. | |
1701 | ||
1702 | See wait_for_inferior's use of this function. */ | |
1703 | struct breakpoint * | |
fba45db2 | 1704 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c SS |
1705 | { |
1706 | if (bsp == NULL) | |
1707 | error ("Internal error (bpstat_find_step_resume_breakpoint)"); | |
1708 | ||
1709 | for (; bsp != NULL; bsp = bsp->next) | |
1710 | { | |
1711 | if ((bsp->breakpoint_at != NULL) && | |
c5aa993b JM |
1712 | (bsp->breakpoint_at->type == bp_step_resume)) |
1713 | return bsp->breakpoint_at; | |
c906108c SS |
1714 | } |
1715 | ||
1716 | error ("Internal error (no step_resume breakpoint found)"); | |
1717 | } | |
1718 | ||
1719 | ||
1720 | /* Return the breakpoint number of the first breakpoint we are stopped | |
1721 | at. *BSP upon return is a bpstat which points to the remaining | |
1722 | breakpoints stopped at (but which is not guaranteed to be good for | |
1723 | anything but further calls to bpstat_num). | |
1724 | Return 0 if passed a bpstat which does not indicate any breakpoints. */ | |
1725 | ||
1726 | int | |
fba45db2 | 1727 | bpstat_num (bpstat *bsp) |
c906108c SS |
1728 | { |
1729 | struct breakpoint *b; | |
1730 | ||
1731 | if ((*bsp) == NULL) | |
1732 | return 0; /* No more breakpoint values */ | |
1733 | else | |
1734 | { | |
1735 | b = (*bsp)->breakpoint_at; | |
1736 | *bsp = (*bsp)->next; | |
1737 | if (b == NULL) | |
1738 | return -1; /* breakpoint that's been deleted since */ | |
1739 | else | |
c5aa993b | 1740 | return b->number; /* We have its number */ |
c906108c SS |
1741 | } |
1742 | } | |
1743 | ||
1744 | /* Modify BS so that the actions will not be performed. */ | |
1745 | ||
1746 | void | |
fba45db2 | 1747 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
1748 | { |
1749 | for (; bs != NULL; bs = bs->next) | |
1750 | { | |
1751 | bs->commands = NULL; | |
1752 | if (bs->old_val != NULL) | |
1753 | { | |
1754 | value_free (bs->old_val); | |
1755 | bs->old_val = NULL; | |
1756 | } | |
1757 | } | |
1758 | } | |
1759 | ||
1760 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
1761 | /* ARGSUSED */ | |
1762 | static void | |
fba45db2 | 1763 | cleanup_executing_breakpoints (PTR ignore) |
c906108c SS |
1764 | { |
1765 | executing_breakpoint_commands = 0; | |
1766 | } | |
1767 | ||
1768 | /* Execute all the commands associated with all the breakpoints at this | |
1769 | location. Any of these commands could cause the process to proceed | |
1770 | beyond this point, etc. We look out for such changes by checking | |
1771 | the global "breakpoint_proceeded" after each command. */ | |
1772 | ||
1773 | void | |
fba45db2 | 1774 | bpstat_do_actions (bpstat *bsp) |
c906108c SS |
1775 | { |
1776 | bpstat bs; | |
1777 | struct cleanup *old_chain; | |
1778 | struct command_line *cmd; | |
1779 | ||
1780 | /* Avoid endless recursion if a `source' command is contained | |
1781 | in bs->commands. */ | |
1782 | if (executing_breakpoint_commands) | |
1783 | return; | |
1784 | ||
1785 | executing_breakpoint_commands = 1; | |
1786 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
1787 | ||
1788 | top: | |
1789 | /* Note that (as of this writing), our callers all appear to | |
1790 | be passing us the address of global stop_bpstat. And, if | |
1791 | our calls to execute_control_command cause the inferior to | |
1792 | proceed, that global (and hence, *bsp) will change. | |
1793 | ||
1794 | We must be careful to not touch *bsp unless the inferior | |
1795 | has not proceeded. */ | |
1796 | ||
1797 | /* This pointer will iterate over the list of bpstat's. */ | |
1798 | bs = *bsp; | |
1799 | ||
1800 | breakpoint_proceeded = 0; | |
1801 | for (; bs != NULL; bs = bs->next) | |
1802 | { | |
1803 | cmd = bs->commands; | |
1804 | while (cmd != NULL) | |
1805 | { | |
1806 | execute_control_command (cmd); | |
1807 | ||
1808 | if (breakpoint_proceeded) | |
1809 | break; | |
1810 | else | |
1811 | cmd = cmd->next; | |
1812 | } | |
1813 | if (breakpoint_proceeded) | |
1814 | /* The inferior is proceeded by the command; bomb out now. | |
1815 | The bpstat chain has been blown away by wait_for_inferior. | |
1816 | But since execution has stopped again, there is a new bpstat | |
1817 | to look at, so start over. */ | |
1818 | goto top; | |
1819 | else | |
1820 | bs->commands = NULL; | |
1821 | } | |
1822 | ||
1823 | executing_breakpoint_commands = 0; | |
1824 | discard_cleanups (old_chain); | |
1825 | } | |
1826 | ||
e514a9d6 | 1827 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 1828 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
1829 | by having it set different print_it values. |
1830 | ||
1831 | Current scheme: When we stop, bpstat_print() is called. It loops | |
1832 | through the bpstat list of things causing this stop, calling the | |
1833 | print_bp_stop_message function on each one. The behavior of the | |
1834 | print_bp_stop_message function depends on the print_it field of | |
1835 | bpstat. If such field so indicates, call this function here. | |
1836 | ||
1837 | Return values from this routine (ultimately used by bpstat_print() | |
1838 | and normal_stop() to decide what to do): | |
1839 | PRINT_NOTHING: Means we already printed all we needed to print, | |
1840 | don't print anything else. | |
1841 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
1842 | that something to be followed by a location. | |
1843 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
1844 | that something to be followed by a location. | |
1845 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
1846 | analysis. */ | |
c906108c | 1847 | |
917317f4 | 1848 | static enum print_stop_action |
fba45db2 | 1849 | print_it_typical (bpstat bs) |
c906108c | 1850 | { |
8b93c638 JM |
1851 | #ifdef UI_OUT |
1852 | struct cleanup *old_chain; | |
1853 | struct ui_stream *stb; | |
1854 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 1855 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
8b93c638 | 1856 | #endif /* UI_OUT */ |
c906108c SS |
1857 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
1858 | which has since been deleted. */ | |
e514a9d6 | 1859 | if (bs->breakpoint_at == NULL) |
917317f4 | 1860 | return PRINT_UNKNOWN; |
c906108c | 1861 | |
e514a9d6 | 1862 | switch (bs->breakpoint_at->type) |
c906108c | 1863 | { |
e514a9d6 JM |
1864 | case bp_breakpoint: |
1865 | case bp_hardware_breakpoint: | |
8b93c638 JM |
1866 | #ifdef UI_OUT |
1867 | annotate_breakpoint (bs->breakpoint_at->number); | |
1868 | ui_out_text (uiout, "\nBreakpoint "); | |
fb40c209 AC |
1869 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
1870 | ui_out_field_string (uiout, "reason", "breakpoint-hit"); | |
8b93c638 JM |
1871 | ui_out_field_int (uiout, "bkptno", bs->breakpoint_at->number); |
1872 | ui_out_text (uiout, ", "); | |
1873 | return PRINT_SRC_AND_LOC; | |
1874 | #else | |
e514a9d6 JM |
1875 | /* I think the user probably only wants to see one breakpoint |
1876 | number, not all of them. */ | |
1877 | annotate_breakpoint (bs->breakpoint_at->number); | |
1878 | printf_filtered ("\nBreakpoint %d, ", bs->breakpoint_at->number); | |
917317f4 | 1879 | return PRINT_SRC_AND_LOC; |
8b93c638 | 1880 | #endif |
e514a9d6 JM |
1881 | break; |
1882 | ||
1883 | case bp_shlib_event: | |
917317f4 JM |
1884 | /* Did we stop because the user set the stop_on_solib_events |
1885 | variable? (If so, we report this as a generic, "Stopped due | |
1886 | to shlib event" message.) */ | |
e514a9d6 JM |
1887 | printf_filtered ("Stopped due to shared library event\n"); |
1888 | return PRINT_NOTHING; | |
1889 | break; | |
1890 | ||
c4093a6a JM |
1891 | case bp_thread_event: |
1892 | /* Not sure how we will get here. | |
1893 | GDB should not stop for these breakpoints. */ | |
1894 | printf_filtered ("Thread Event Breakpoint: gdb should not stop!\n"); | |
1895 | return PRINT_NOTHING; | |
1896 | break; | |
1897 | ||
e514a9d6 | 1898 | case bp_catch_load: |
c906108c SS |
1899 | annotate_catchpoint (bs->breakpoint_at->number); |
1900 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
e514a9d6 JM |
1901 | printf_filtered ("loaded"); |
1902 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
1903 | return PRINT_SRC_AND_LOC; | |
1904 | break; | |
1905 | ||
1906 | case bp_catch_unload: | |
1907 | annotate_catchpoint (bs->breakpoint_at->number); | |
1908 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
1909 | printf_filtered ("unloaded"); | |
1910 | printf_filtered (" %s), ", bs->breakpoint_at->triggered_dll_pathname); | |
1911 | return PRINT_SRC_AND_LOC; | |
1912 | break; | |
1913 | ||
1914 | case bp_catch_fork: | |
1915 | annotate_catchpoint (bs->breakpoint_at->number); | |
1916 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
1917 | printf_filtered ("forked"); | |
53a5351d JM |
1918 | printf_filtered (" process %d), ", |
1919 | bs->breakpoint_at->forked_inferior_pid); | |
917317f4 | 1920 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
1921 | break; |
1922 | ||
1923 | case bp_catch_vfork: | |
1924 | annotate_catchpoint (bs->breakpoint_at->number); | |
1925 | printf_filtered ("\nCatchpoint %d (", bs->breakpoint_at->number); | |
1926 | printf_filtered ("vforked"); | |
1927 | printf_filtered (" process %d), ", | |
1928 | bs->breakpoint_at->forked_inferior_pid); | |
1929 | return PRINT_SRC_AND_LOC; | |
1930 | break; | |
1931 | ||
1932 | case bp_catch_exec: | |
c906108c SS |
1933 | annotate_catchpoint (bs->breakpoint_at->number); |
1934 | printf_filtered ("\nCatchpoint %d (exec'd %s), ", | |
c5aa993b JM |
1935 | bs->breakpoint_at->number, |
1936 | bs->breakpoint_at->exec_pathname); | |
917317f4 | 1937 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
1938 | break; |
1939 | ||
1940 | case bp_catch_catch: | |
53a5351d JM |
1941 | if (current_exception_event && |
1942 | (CURRENT_EXCEPTION_KIND == EX_EVENT_CATCH)) | |
c5aa993b JM |
1943 | { |
1944 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
1945 | printf_filtered ("\nCatchpoint %d (exception caught), ", |
1946 | bs->breakpoint_at->number); | |
c5aa993b JM |
1947 | printf_filtered ("throw location "); |
1948 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
1949 | printf_filtered ("%s:%d", | |
1950 | CURRENT_EXCEPTION_THROW_FILE, | |
1951 | CURRENT_EXCEPTION_THROW_LINE); | |
1952 | else | |
1953 | printf_filtered ("unknown"); | |
1954 | ||
1955 | printf_filtered (", catch location "); | |
1956 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
1957 | printf_filtered ("%s:%d", | |
1958 | CURRENT_EXCEPTION_CATCH_FILE, | |
1959 | CURRENT_EXCEPTION_CATCH_LINE); | |
1960 | else | |
1961 | printf_filtered ("unknown"); | |
1962 | ||
1963 | printf_filtered ("\n"); | |
e514a9d6 JM |
1964 | /* don't bother to print location frame info */ |
1965 | return PRINT_SRC_ONLY; | |
c5aa993b | 1966 | } |
c906108c | 1967 | else |
c5aa993b | 1968 | { |
e514a9d6 JM |
1969 | /* really throw, some other bpstat will handle it */ |
1970 | return PRINT_UNKNOWN; | |
c5aa993b | 1971 | } |
e514a9d6 JM |
1972 | break; |
1973 | ||
1974 | case bp_catch_throw: | |
53a5351d JM |
1975 | if (current_exception_event && |
1976 | (CURRENT_EXCEPTION_KIND == EX_EVENT_THROW)) | |
c5aa993b JM |
1977 | { |
1978 | annotate_catchpoint (bs->breakpoint_at->number); | |
53a5351d JM |
1979 | printf_filtered ("\nCatchpoint %d (exception thrown), ", |
1980 | bs->breakpoint_at->number); | |
c5aa993b JM |
1981 | printf_filtered ("throw location "); |
1982 | if (CURRENT_EXCEPTION_THROW_PC && CURRENT_EXCEPTION_THROW_LINE) | |
1983 | printf_filtered ("%s:%d", | |
1984 | CURRENT_EXCEPTION_THROW_FILE, | |
1985 | CURRENT_EXCEPTION_THROW_LINE); | |
1986 | else | |
1987 | printf_filtered ("unknown"); | |
1988 | ||
1989 | printf_filtered (", catch location "); | |
1990 | if (CURRENT_EXCEPTION_CATCH_PC && CURRENT_EXCEPTION_CATCH_LINE) | |
1991 | printf_filtered ("%s:%d", | |
1992 | CURRENT_EXCEPTION_CATCH_FILE, | |
1993 | CURRENT_EXCEPTION_CATCH_LINE); | |
1994 | else | |
1995 | printf_filtered ("unknown"); | |
1996 | ||
1997 | printf_filtered ("\n"); | |
e514a9d6 JM |
1998 | /* don't bother to print location frame info */ |
1999 | return PRINT_SRC_ONLY; | |
c5aa993b | 2000 | } |
c906108c | 2001 | else |
c5aa993b | 2002 | { |
e514a9d6 JM |
2003 | /* really catch, some other bpstat will handle it */ |
2004 | return PRINT_UNKNOWN; | |
c5aa993b | 2005 | } |
e514a9d6 | 2006 | break; |
c906108c | 2007 | |
e514a9d6 JM |
2008 | case bp_watchpoint: |
2009 | case bp_hardware_watchpoint: | |
2010 | if (bs->old_val != NULL) | |
2011 | { | |
2012 | annotate_watchpoint (bs->breakpoint_at->number); | |
8b93c638 | 2013 | #ifdef UI_OUT |
fb40c209 AC |
2014 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2015 | ui_out_field_string (uiout, "reason", "watchpoint-trigger"); | |
8b93c638 JM |
2016 | mention (bs->breakpoint_at); |
2017 | ui_out_list_begin (uiout, "value"); | |
2018 | ui_out_text (uiout, "\nOld value = "); | |
2019 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2020 | ui_out_field_stream (uiout, "old", stb); | |
2021 | ui_out_text (uiout, "\nNew value = "); | |
2022 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2023 | ui_out_field_stream (uiout, "new", stb); | |
2024 | ui_out_list_end (uiout); | |
2025 | ui_out_text (uiout, "\n"); | |
2026 | #else | |
e514a9d6 JM |
2027 | mention (bs->breakpoint_at); |
2028 | printf_filtered ("\nOld value = "); | |
2029 | value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default); | |
2030 | printf_filtered ("\nNew value = "); | |
2031 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, | |
2032 | Val_pretty_default); | |
2033 | printf_filtered ("\n"); | |
8b93c638 | 2034 | #endif |
e514a9d6 JM |
2035 | value_free (bs->old_val); |
2036 | bs->old_val = NULL; | |
2037 | } | |
2038 | /* More than one watchpoint may have been triggered. */ | |
2039 | return PRINT_UNKNOWN; | |
2040 | break; | |
2041 | ||
2042 | case bp_read_watchpoint: | |
8b93c638 | 2043 | #ifdef UI_OUT |
fb40c209 AC |
2044 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2045 | ui_out_field_string (uiout, "reason", "read-watchpoint-trigger"); | |
8b93c638 JM |
2046 | mention (bs->breakpoint_at); |
2047 | ui_out_list_begin (uiout, "value"); | |
2048 | ui_out_text (uiout, "\nValue = "); | |
2049 | value_print (bs->breakpoint_at->val, stb->stream, 0, Val_pretty_default); | |
2050 | ui_out_field_stream (uiout, "value", stb); | |
2051 | ui_out_list_end (uiout); | |
2052 | ui_out_text (uiout, "\n"); | |
2053 | #else | |
c906108c | 2054 | mention (bs->breakpoint_at); |
e514a9d6 | 2055 | printf_filtered ("\nValue = "); |
c906108c SS |
2056 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, |
2057 | Val_pretty_default); | |
2058 | printf_filtered ("\n"); | |
8b93c638 | 2059 | #endif |
917317f4 | 2060 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2061 | break; |
2062 | ||
2063 | case bp_access_watchpoint: | |
8b93c638 JM |
2064 | #ifdef UI_OUT |
2065 | if (bs->old_val != NULL) | |
2066 | { | |
2067 | annotate_watchpoint (bs->breakpoint_at->number); | |
fb40c209 AC |
2068 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2069 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); | |
8b93c638 JM |
2070 | mention (bs->breakpoint_at); |
2071 | ui_out_list_begin (uiout, "value"); | |
2072 | ui_out_text (uiout, "\nOld value = "); | |
2073 | value_print (bs->old_val, stb->stream, 0, Val_pretty_default); | |
2074 | ui_out_field_stream (uiout, "old", stb); | |
2075 | value_free (bs->old_val); | |
2076 | bs->old_val = NULL; | |
2077 | ui_out_text (uiout, "\nNew value = "); | |
2078 | } | |
2079 | else | |
2080 | { | |
2081 | mention (bs->breakpoint_at); | |
fb40c209 | 2082 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
c97fe386 EZ |
2083 | ui_out_field_string (uiout, "reason", "access-watchpoint-trigger"); |
2084 | ui_out_list_begin (uiout, "value"); | |
8b93c638 JM |
2085 | ui_out_text (uiout, "\nValue = "); |
2086 | } | |
2087 | value_print (bs->breakpoint_at->val, stb->stream, 0,Val_pretty_default); | |
2088 | ui_out_field_stream (uiout, "new", stb); | |
2089 | ui_out_list_end (uiout); | |
2090 | ui_out_text (uiout, "\n"); | |
2091 | #else | |
e514a9d6 JM |
2092 | if (bs->old_val != NULL) |
2093 | { | |
2094 | annotate_watchpoint (bs->breakpoint_at->number); | |
2095 | mention (bs->breakpoint_at); | |
2096 | printf_filtered ("\nOld value = "); | |
2097 | value_print (bs->old_val, gdb_stdout, 0, Val_pretty_default); | |
2098 | value_free (bs->old_val); | |
2099 | bs->old_val = NULL; | |
2100 | printf_filtered ("\nNew value = "); | |
2101 | } | |
2102 | else | |
2103 | { | |
2104 | mention (bs->breakpoint_at); | |
2105 | printf_filtered ("\nValue = "); | |
2106 | } | |
c906108c | 2107 | value_print (bs->breakpoint_at->val, gdb_stdout, 0, |
c5aa993b | 2108 | Val_pretty_default); |
c906108c | 2109 | printf_filtered ("\n"); |
8b93c638 | 2110 | #endif |
917317f4 | 2111 | return PRINT_UNKNOWN; |
e514a9d6 | 2112 | break; |
4ce44c66 | 2113 | |
e514a9d6 JM |
2114 | /* Fall through, we don't deal with these types of breakpoints |
2115 | here. */ | |
2116 | ||
11cf8741 | 2117 | case bp_finish: |
fb40c209 AC |
2118 | #ifdef UI_OUT |
2119 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
2120 | ui_out_field_string (uiout, "reason", "function-finished"); | |
2121 | #endif | |
8b93c638 JM |
2122 | return PRINT_UNKNOWN; |
2123 | break; | |
2124 | ||
e514a9d6 | 2125 | case bp_until: |
fb40c209 AC |
2126 | #ifdef UI_OUT |
2127 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
2128 | ui_out_field_string (uiout, "reason", "location-reached"); | |
2129 | #endif | |
8b93c638 JM |
2130 | return PRINT_UNKNOWN; |
2131 | break; | |
2132 | ||
c2d11a7d | 2133 | case bp_none: |
e514a9d6 JM |
2134 | case bp_longjmp: |
2135 | case bp_longjmp_resume: | |
2136 | case bp_step_resume: | |
2137 | case bp_through_sigtramp: | |
2138 | case bp_watchpoint_scope: | |
2139 | case bp_call_dummy: | |
2140 | default: | |
2141 | return PRINT_UNKNOWN; | |
2142 | } | |
2143 | } | |
2144 | ||
2145 | /* Generic routine for printing messages indicating why we | |
2146 | stopped. The behavior of this function depends on the value | |
2147 | 'print_it' in the bpstat structure. Under some circumstances we | |
2148 | may decide not to print anything here and delegate the task to | |
2149 | normal_stop(). */ | |
2150 | ||
2151 | static enum print_stop_action | |
2152 | print_bp_stop_message (bpstat bs) | |
2153 | { | |
2154 | switch (bs->print_it) | |
2155 | { | |
2156 | case print_it_noop: | |
2157 | /* Nothing should be printed for this bpstat entry. */ | |
2158 | return PRINT_UNKNOWN; | |
2159 | break; | |
2160 | ||
2161 | case print_it_done: | |
2162 | /* We still want to print the frame, but we already printed the | |
2163 | relevant messages. */ | |
2164 | return PRINT_SRC_AND_LOC; | |
2165 | break; | |
2166 | ||
2167 | case print_it_normal: | |
2168 | /* Normal case, we handle everything in print_it_typical. */ | |
2169 | return print_it_typical (bs); | |
2170 | break; | |
2171 | default: | |
8e65ff28 AC |
2172 | internal_error (__FILE__, __LINE__, |
2173 | "print_bp_stop_message: unrecognized enum value"); | |
e514a9d6 | 2174 | break; |
c906108c | 2175 | } |
c906108c SS |
2176 | } |
2177 | ||
e514a9d6 JM |
2178 | /* Print a message indicating what happened. This is called from |
2179 | normal_stop(). The input to this routine is the head of the bpstat | |
2180 | list - a list of the eventpoints that caused this stop. This | |
2181 | routine calls the generic print routine for printing a message | |
2182 | about reasons for stopping. This will print (for example) the | |
2183 | "Breakpoint n," part of the output. The return value of this | |
2184 | routine is one of: | |
c906108c | 2185 | |
917317f4 JM |
2186 | PRINT_UNKNOWN: Means we printed nothing |
2187 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2188 | code to print the location. An example is |
2189 | "Breakpoint 1, " which should be followed by | |
2190 | the location. | |
917317f4 | 2191 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2192 | to also print the location part of the message. |
2193 | An example is the catch/throw messages, which | |
917317f4 JM |
2194 | don't require a location appended to the end. |
2195 | PRINT_NOTHING: We have done some printing and we don't need any | |
2196 | further info to be printed.*/ | |
c906108c | 2197 | |
917317f4 | 2198 | enum print_stop_action |
fba45db2 | 2199 | bpstat_print (bpstat bs) |
c906108c SS |
2200 | { |
2201 | int val; | |
c5aa993b | 2202 | |
c906108c | 2203 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2204 | (Currently all watchpoints go on the bpstat whether hit or not. |
2205 | That probably could (should) be changed, provided care is taken | |
c906108c | 2206 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2207 | for (; bs; bs = bs->next) |
2208 | { | |
2209 | val = print_bp_stop_message (bs); | |
2210 | if (val == PRINT_SRC_ONLY | |
2211 | || val == PRINT_SRC_AND_LOC | |
2212 | || val == PRINT_NOTHING) | |
2213 | return val; | |
2214 | } | |
c906108c | 2215 | |
e514a9d6 JM |
2216 | /* We reached the end of the chain, or we got a null BS to start |
2217 | with and nothing was printed. */ | |
917317f4 | 2218 | return PRINT_UNKNOWN; |
c906108c SS |
2219 | } |
2220 | ||
2221 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2222 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2223 | The argument is a "struct expression *" that has been cast to char * to | |
2224 | make it pass through catch_errors. */ | |
2225 | ||
2226 | static int | |
fba45db2 | 2227 | breakpoint_cond_eval (PTR exp) |
c906108c SS |
2228 | { |
2229 | value_ptr mark = value_mark (); | |
c5aa993b | 2230 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2231 | value_free_to_mark (mark); |
2232 | return i; | |
2233 | } | |
2234 | ||
2235 | /* Allocate a new bpstat and chain it to the current one. */ | |
2236 | ||
2237 | static bpstat | |
831662b3 | 2238 | bpstat_alloc (struct breakpoint *b, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2239 | { |
2240 | bpstat bs; | |
2241 | ||
2242 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2243 | cbs->next = bs; | |
2244 | bs->breakpoint_at = b; | |
2245 | /* If the condition is false, etc., don't do the commands. */ | |
2246 | bs->commands = NULL; | |
2247 | bs->old_val = NULL; | |
2248 | bs->print_it = print_it_normal; | |
2249 | return bs; | |
2250 | } | |
2251 | \f | |
2252 | /* Possible return values for watchpoint_check (this can't be an enum | |
2253 | because of check_errors). */ | |
2254 | /* The watchpoint has been deleted. */ | |
2255 | #define WP_DELETED 1 | |
2256 | /* The value has changed. */ | |
2257 | #define WP_VALUE_CHANGED 2 | |
2258 | /* The value has not changed. */ | |
2259 | #define WP_VALUE_NOT_CHANGED 3 | |
2260 | ||
2261 | #define BP_TEMPFLAG 1 | |
2262 | #define BP_HARDWAREFLAG 2 | |
2263 | ||
2264 | /* Check watchpoint condition. */ | |
2265 | ||
2266 | static int | |
fba45db2 | 2267 | watchpoint_check (PTR p) |
c906108c SS |
2268 | { |
2269 | bpstat bs = (bpstat) p; | |
2270 | struct breakpoint *b; | |
2271 | struct frame_info *fr; | |
2272 | int within_current_scope; | |
2273 | ||
2274 | b = bs->breakpoint_at; | |
2275 | ||
2276 | if (b->exp_valid_block == NULL) | |
2277 | within_current_scope = 1; | |
2278 | else | |
2279 | { | |
2280 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2281 | any chance of handling watchpoints on local variables, we'll need |
2282 | the frame chain (so we can determine if we're in scope). */ | |
2283 | reinit_frame_cache (); | |
c906108c SS |
2284 | fr = find_frame_addr_in_frame_chain (b->watchpoint_frame); |
2285 | within_current_scope = (fr != NULL); | |
2286 | if (within_current_scope) | |
2287 | /* If we end up stopping, the current frame will get selected | |
2288 | in normal_stop. So this call to select_frame won't affect | |
2289 | the user. */ | |
2290 | select_frame (fr, -1); | |
2291 | } | |
c5aa993b | 2292 | |
c906108c SS |
2293 | if (within_current_scope) |
2294 | { | |
2295 | /* We use value_{,free_to_}mark because it could be a | |
2296 | *long* time before we return to the command level and | |
c5aa993b JM |
2297 | call free_all_values. We can't call free_all_values because |
2298 | we might be in the middle of evaluating a function call. */ | |
c906108c SS |
2299 | |
2300 | value_ptr mark = value_mark (); | |
2301 | value_ptr new_val = evaluate_expression (bs->breakpoint_at->exp); | |
2302 | if (!value_equal (b->val, new_val)) | |
2303 | { | |
2304 | release_value (new_val); | |
2305 | value_free_to_mark (mark); | |
2306 | bs->old_val = b->val; | |
2307 | b->val = new_val; | |
2308 | /* We will stop here */ | |
2309 | return WP_VALUE_CHANGED; | |
2310 | } | |
2311 | else | |
2312 | { | |
2313 | /* Nothing changed, don't do anything. */ | |
2314 | value_free_to_mark (mark); | |
2315 | /* We won't stop here */ | |
2316 | return WP_VALUE_NOT_CHANGED; | |
2317 | } | |
2318 | } | |
2319 | else | |
2320 | { | |
2321 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2322 | if we temporarily ignored the watchpoint, then when |
2323 | we reenter the block in which it is valid it contains | |
2324 | garbage (in the case of a function, it may have two | |
2325 | garbage values, one before and one after the prologue). | |
2326 | So we can't even detect the first assignment to it and | |
2327 | watch after that (since the garbage may or may not equal | |
2328 | the first value assigned). */ | |
4ce44c66 JM |
2329 | /* We print all the stop information in print_it_typical(), but |
2330 | in this case, by the time we call print_it_typical() this bp | |
2331 | will be deleted already. So we have no choice but print the | |
2332 | information here. */ | |
8b93c638 | 2333 | #ifdef UI_OUT |
fb40c209 AC |
2334 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) |
2335 | ui_out_field_string (uiout, "reason", "watchpoint-scope"); | |
8b93c638 JM |
2336 | ui_out_text (uiout, "\nWatchpoint "); |
2337 | ui_out_field_int (uiout, "wpnum", bs->breakpoint_at->number); | |
2338 | ui_out_text (uiout, " deleted because the program has left the block in\n\ | |
2339 | which its expression is valid.\n"); | |
2340 | #else | |
c906108c SS |
2341 | printf_filtered ("\ |
2342 | Watchpoint %d deleted because the program has left the block in\n\ | |
2343 | which its expression is valid.\n", bs->breakpoint_at->number); | |
8b93c638 | 2344 | #endif |
4ce44c66 | 2345 | |
c906108c SS |
2346 | if (b->related_breakpoint) |
2347 | b->related_breakpoint->disposition = del_at_next_stop; | |
2348 | b->disposition = del_at_next_stop; | |
2349 | ||
2350 | return WP_DELETED; | |
2351 | } | |
2352 | } | |
2353 | ||
c906108c SS |
2354 | /* Get a bpstat associated with having just stopped at address *PC |
2355 | and frame address CORE_ADDRESS. Update *PC to point at the | |
2356 | breakpoint (if we hit a breakpoint). NOT_A_BREAKPOINT is nonzero | |
2357 | if this is known to not be a real breakpoint (it could still be a | |
2358 | watchpoint, though). */ | |
2359 | ||
2360 | /* Determine whether we stopped at a breakpoint, etc, or whether we | |
2361 | don't understand this stop. Result is a chain of bpstat's such that: | |
2362 | ||
c5aa993b | 2363 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2364 | |
c5aa993b | 2365 | if we understand why we stopped, the result is not null. |
c906108c | 2366 | |
c5aa993b JM |
2367 | Each element of the chain refers to a particular breakpoint or |
2368 | watchpoint at which we have stopped. (We may have stopped for | |
2369 | several reasons concurrently.) | |
c906108c | 2370 | |
c5aa993b JM |
2371 | Each element of the chain has valid next, breakpoint_at, |
2372 | commands, FIXME??? fields. */ | |
c906108c SS |
2373 | |
2374 | bpstat | |
fba45db2 | 2375 | bpstat_stop_status (CORE_ADDR *pc, int not_a_breakpoint) |
c906108c SS |
2376 | { |
2377 | register struct breakpoint *b, *temp; | |
2378 | CORE_ADDR bp_addr; | |
2379 | /* True if we've hit a breakpoint (as opposed to a watchpoint). */ | |
2380 | int real_breakpoint = 0; | |
2381 | /* Root of the chain of bpstat's */ | |
2382 | struct bpstats root_bs[1]; | |
2383 | /* Pointer to the last thing in the chain currently. */ | |
2384 | bpstat bs = root_bs; | |
2385 | static char message1[] = | |
c5aa993b JM |
2386 | "Error evaluating expression for watchpoint %d\n"; |
2387 | char message[sizeof (message1) + 30 /* slop */ ]; | |
c906108c SS |
2388 | |
2389 | /* Get the address where the breakpoint would have been. */ | |
b0ed3589 | 2390 | bp_addr = *pc - (not_a_breakpoint && !SOFTWARE_SINGLE_STEP_P () ? |
6426a772 | 2391 | 0 : DECR_PC_AFTER_BREAK); |
c906108c SS |
2392 | |
2393 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
2394 | { |
2395 | if (b->enable == disabled | |
2396 | || b->enable == shlib_disabled | |
2397 | || b->enable == call_disabled) | |
2398 | continue; | |
2399 | ||
2400 | if (b->type != bp_watchpoint | |
2401 | && b->type != bp_hardware_watchpoint | |
2402 | && b->type != bp_read_watchpoint | |
2403 | && b->type != bp_access_watchpoint | |
2404 | && b->type != bp_hardware_breakpoint | |
2405 | && b->type != bp_catch_fork | |
2406 | && b->type != bp_catch_vfork | |
2407 | && b->type != bp_catch_exec | |
2408 | && b->type != bp_catch_catch | |
2409 | && b->type != bp_catch_throw) /* a non-watchpoint bp */ | |
2410 | if (b->address != bp_addr || /* address doesn't match or */ | |
2411 | (overlay_debugging && /* overlay doesn't match */ | |
2412 | section_is_overlay (b->section) && | |
2413 | !section_is_mapped (b->section))) | |
c906108c SS |
2414 | continue; |
2415 | ||
c5aa993b JM |
2416 | if (b->type == bp_hardware_breakpoint |
2417 | && b->address != (*pc - DECR_PC_AFTER_HW_BREAK)) | |
2418 | continue; | |
2419 | ||
c5aa993b JM |
2420 | /* Is this a catchpoint of a load or unload? If so, did we |
2421 | get a load or unload of the specified library? If not, | |
2422 | ignore it. */ | |
2423 | if ((b->type == bp_catch_load) | |
c906108c | 2424 | #if defined(SOLIB_HAVE_LOAD_EVENT) |
c5aa993b JM |
2425 | && (!SOLIB_HAVE_LOAD_EVENT (inferior_pid) |
2426 | || ((b->dll_pathname != NULL) | |
53a5351d JM |
2427 | && (strcmp (b->dll_pathname, |
2428 | SOLIB_LOADED_LIBRARY_PATHNAME (inferior_pid)) | |
2429 | != 0))) | |
c906108c | 2430 | #endif |
c5aa993b JM |
2431 | ) |
2432 | continue; | |
2433 | ||
2434 | if ((b->type == bp_catch_unload) | |
c906108c | 2435 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) |
c5aa993b JM |
2436 | && (!SOLIB_HAVE_UNLOAD_EVENT (inferior_pid) |
2437 | || ((b->dll_pathname != NULL) | |
53a5351d JM |
2438 | && (strcmp (b->dll_pathname, |
2439 | SOLIB_UNLOADED_LIBRARY_PATHNAME (inferior_pid)) | |
2440 | != 0))) | |
c906108c | 2441 | #endif |
c5aa993b JM |
2442 | ) |
2443 | continue; | |
c906108c | 2444 | |
c5aa993b JM |
2445 | if ((b->type == bp_catch_fork) |
2446 | && !target_has_forked (inferior_pid, &b->forked_inferior_pid)) | |
2447 | continue; | |
c906108c | 2448 | |
c5aa993b JM |
2449 | if ((b->type == bp_catch_vfork) |
2450 | && !target_has_vforked (inferior_pid, &b->forked_inferior_pid)) | |
2451 | continue; | |
c906108c | 2452 | |
c5aa993b JM |
2453 | if ((b->type == bp_catch_exec) |
2454 | && !target_has_execd (inferior_pid, &b->exec_pathname)) | |
2455 | continue; | |
c906108c | 2456 | |
c5aa993b JM |
2457 | if (ep_is_exception_catchpoint (b) && |
2458 | !(current_exception_event = target_get_current_exception_event ())) | |
2459 | continue; | |
c906108c | 2460 | |
c5aa993b JM |
2461 | /* Come here if it's a watchpoint, or if the break address matches */ |
2462 | ||
2463 | bs = bpstat_alloc (b, bs); /* Alloc a bpstat to explain stop */ | |
2464 | ||
2465 | /* Watchpoints may change this, if not found to have triggered. */ | |
2466 | bs->stop = 1; | |
2467 | bs->print = 1; | |
2468 | ||
2469 | sprintf (message, message1, b->number); | |
53a5351d JM |
2470 | if (b->type == bp_watchpoint || |
2471 | b->type == bp_hardware_watchpoint) | |
c5aa993b | 2472 | { |
53a5351d JM |
2473 | switch (catch_errors (watchpoint_check, bs, message, |
2474 | RETURN_MASK_ALL)) | |
c5aa993b JM |
2475 | { |
2476 | case WP_DELETED: | |
2477 | /* We've already printed what needs to be printed. */ | |
4ce44c66 JM |
2478 | /* Actually this is superfluous, because by the time we |
2479 | call print_it_typical() the wp will be already deleted, | |
2480 | and the function will return immediately. */ | |
c5aa993b JM |
2481 | bs->print_it = print_it_done; |
2482 | /* Stop. */ | |
2483 | break; | |
2484 | case WP_VALUE_CHANGED: | |
2485 | /* Stop. */ | |
2486 | ++(b->hit_count); | |
2487 | break; | |
2488 | case WP_VALUE_NOT_CHANGED: | |
2489 | /* Don't stop. */ | |
2490 | bs->print_it = print_it_noop; | |
2491 | bs->stop = 0; | |
c5aa993b JM |
2492 | continue; |
2493 | default: | |
2494 | /* Can't happen. */ | |
2495 | /* FALLTHROUGH */ | |
2496 | case 0: | |
2497 | /* Error from catch_errors. */ | |
2498 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2499 | if (b->related_breakpoint) | |
2500 | b->related_breakpoint->disposition = del_at_next_stop; | |
2501 | b->disposition = del_at_next_stop; | |
2502 | /* We've already printed what needs to be printed. */ | |
2503 | bs->print_it = print_it_done; | |
2504 | ||
2505 | /* Stop. */ | |
2506 | break; | |
2507 | } | |
2508 | } | |
53a5351d JM |
2509 | else if (b->type == bp_read_watchpoint || |
2510 | b->type == bp_access_watchpoint) | |
c5aa993b JM |
2511 | { |
2512 | CORE_ADDR addr; | |
2513 | value_ptr v; | |
2514 | int found = 0; | |
2515 | ||
2516 | addr = target_stopped_data_address (); | |
2517 | if (addr == 0) | |
2518 | continue; | |
2519 | for (v = b->val_chain; v; v = v->next) | |
2520 | { | |
5c44784c JM |
2521 | if (VALUE_LVAL (v) == lval_memory |
2522 | && ! VALUE_LAZY (v)) | |
c5aa993b | 2523 | { |
2e70b7b9 MS |
2524 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
2525 | ||
2526 | if (v == b->val_chain | |
2527 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
2528 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
2529 | { | |
2530 | CORE_ADDR vaddr; | |
2531 | ||
2532 | vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
2533 | /* Exact match not required. Within range is | |
2534 | sufficient. */ | |
2535 | if (addr >= vaddr && | |
2536 | addr < vaddr + TYPE_LENGTH (VALUE_TYPE (v))) | |
2537 | found = 1; | |
2538 | } | |
c5aa993b JM |
2539 | } |
2540 | } | |
2541 | if (found) | |
53a5351d JM |
2542 | switch (catch_errors (watchpoint_check, bs, message, |
2543 | RETURN_MASK_ALL)) | |
c906108c SS |
2544 | { |
2545 | case WP_DELETED: | |
2546 | /* We've already printed what needs to be printed. */ | |
2547 | bs->print_it = print_it_done; | |
2548 | /* Stop. */ | |
2549 | break; | |
2550 | case WP_VALUE_CHANGED: | |
99e5c1c8 MS |
2551 | if (b->type == bp_read_watchpoint) |
2552 | { | |
2553 | /* Don't stop: read watchpoints shouldn't fire if | |
2554 | the value has changed. This is for targets which | |
2555 | cannot set read-only watchpoints. */ | |
2556 | bs->print_it = print_it_noop; | |
2557 | bs->stop = 0; | |
2558 | continue; | |
2559 | } | |
2560 | ++(b->hit_count); | |
2561 | break; | |
c5aa993b | 2562 | case WP_VALUE_NOT_CHANGED: |
c906108c SS |
2563 | /* Stop. */ |
2564 | ++(b->hit_count); | |
2565 | break; | |
c906108c SS |
2566 | default: |
2567 | /* Can't happen. */ | |
c906108c SS |
2568 | case 0: |
2569 | /* Error from catch_errors. */ | |
2570 | printf_filtered ("Watchpoint %d deleted.\n", b->number); | |
2571 | if (b->related_breakpoint) | |
2572 | b->related_breakpoint->disposition = del_at_next_stop; | |
2573 | b->disposition = del_at_next_stop; | |
2574 | /* We've already printed what needs to be printed. */ | |
2575 | bs->print_it = print_it_done; | |
c906108c SS |
2576 | break; |
2577 | } | |
53a5351d JM |
2578 | else /* found == 0 */ |
2579 | { | |
2580 | /* This is a case where some watchpoint(s) triggered, | |
2581 | but not at the address of this watchpoint (FOUND | |
2582 | was left zero). So don't print anything for this | |
2583 | watchpoint. */ | |
2584 | bs->print_it = print_it_noop; | |
2585 | bs->stop = 0; | |
2586 | continue; | |
2587 | } | |
c5aa993b JM |
2588 | } |
2589 | else | |
2590 | { | |
2591 | /* By definition, an encountered breakpoint is a triggered | |
2592 | breakpoint. */ | |
2593 | ++(b->hit_count); | |
c906108c | 2594 | |
c5aa993b JM |
2595 | real_breakpoint = 1; |
2596 | } | |
2597 | ||
ed9a39eb JM |
2598 | if (b->frame && |
2599 | b->frame != (get_current_frame ())->frame) | |
c5aa993b JM |
2600 | bs->stop = 0; |
2601 | else | |
2602 | { | |
2603 | int value_is_zero = 0; | |
2604 | ||
2605 | if (b->cond) | |
2606 | { | |
2607 | /* Need to select the frame, with all that implies | |
2608 | so that the conditions will have the right context. */ | |
2609 | select_frame (get_current_frame (), 0); | |
2610 | value_is_zero | |
2611 | = catch_errors (breakpoint_cond_eval, (b->cond), | |
2612 | "Error in testing breakpoint condition:\n", | |
2613 | RETURN_MASK_ALL); | |
2614 | /* FIXME-someday, should give breakpoint # */ | |
2615 | free_all_values (); | |
2616 | } | |
2617 | if (b->cond && value_is_zero) | |
2618 | { | |
2619 | bs->stop = 0; | |
2620 | /* Don't consider this a hit. */ | |
2621 | --(b->hit_count); | |
2622 | } | |
2623 | else if (b->ignore_count > 0) | |
2624 | { | |
2625 | b->ignore_count--; | |
5c44784c | 2626 | annotate_ignore_count_change (); |
c5aa993b JM |
2627 | bs->stop = 0; |
2628 | } | |
2629 | else | |
2630 | { | |
2631 | /* We will stop here */ | |
2632 | if (b->disposition == disable) | |
2633 | b->enable = disabled; | |
2634 | bs->commands = b->commands; | |
2635 | if (b->silent) | |
2636 | bs->print = 0; | |
2637 | if (bs->commands && | |
2638 | (STREQ ("silent", bs->commands->line) || | |
2639 | (xdb_commands && STREQ ("Q", bs->commands->line)))) | |
2640 | { | |
2641 | bs->commands = bs->commands->next; | |
c906108c | 2642 | bs->print = 0; |
c5aa993b JM |
2643 | } |
2644 | } | |
2645 | } | |
2646 | /* Print nothing for this entry if we dont stop or if we dont print. */ | |
2647 | if (bs->stop == 0 || bs->print == 0) | |
2648 | bs->print_it = print_it_noop; | |
2649 | } | |
c906108c SS |
2650 | |
2651 | bs->next = NULL; /* Terminate the chain */ | |
2652 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
2653 | ||
2654 | if (real_breakpoint && bs) | |
2655 | { | |
c5aa993b | 2656 | if (bs->breakpoint_at->type == bp_hardware_breakpoint) |
c906108c | 2657 | { |
c5aa993b | 2658 | if (DECR_PC_AFTER_HW_BREAK != 0) |
c906108c SS |
2659 | { |
2660 | *pc = *pc - DECR_PC_AFTER_HW_BREAK; | |
2661 | write_pc (*pc); | |
2662 | } | |
2663 | } | |
2664 | else | |
2665 | { | |
2666 | if (DECR_PC_AFTER_BREAK != 0 || must_shift_inst_regs) | |
2667 | { | |
2668 | *pc = bp_addr; | |
2669 | #if defined (SHIFT_INST_REGS) | |
c5aa993b | 2670 | SHIFT_INST_REGS (); |
c906108c SS |
2671 | #else /* No SHIFT_INST_REGS. */ |
2672 | write_pc (bp_addr); | |
2673 | #endif /* No SHIFT_INST_REGS. */ | |
2674 | } | |
2675 | } | |
2676 | } | |
2677 | ||
2678 | /* The value of a hardware watchpoint hasn't changed, but the | |
2679 | intermediate memory locations we are watching may have. */ | |
c5aa993b | 2680 | if (bs && !bs->stop && |
c906108c SS |
2681 | (bs->breakpoint_at->type == bp_hardware_watchpoint || |
2682 | bs->breakpoint_at->type == bp_read_watchpoint || | |
2683 | bs->breakpoint_at->type == bp_access_watchpoint)) | |
2684 | { | |
2685 | remove_breakpoints (); | |
2686 | insert_breakpoints (); | |
2687 | } | |
2688 | return bs; | |
2689 | } | |
2690 | \f | |
2691 | /* Tell what to do about this bpstat. */ | |
2692 | struct bpstat_what | |
fba45db2 | 2693 | bpstat_what (bpstat bs) |
c906108c SS |
2694 | { |
2695 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
2696 | enum class |
2697 | { | |
2698 | /* This bpstat element has no effect on the main_action. */ | |
2699 | no_effect = 0, | |
2700 | ||
2701 | /* There was a watchpoint, stop but don't print. */ | |
2702 | wp_silent, | |
c906108c | 2703 | |
c5aa993b JM |
2704 | /* There was a watchpoint, stop and print. */ |
2705 | wp_noisy, | |
c906108c | 2706 | |
c5aa993b JM |
2707 | /* There was a breakpoint but we're not stopping. */ |
2708 | bp_nostop, | |
c906108c | 2709 | |
c5aa993b JM |
2710 | /* There was a breakpoint, stop but don't print. */ |
2711 | bp_silent, | |
c906108c | 2712 | |
c5aa993b JM |
2713 | /* There was a breakpoint, stop and print. */ |
2714 | bp_noisy, | |
c906108c | 2715 | |
c5aa993b JM |
2716 | /* We hit the longjmp breakpoint. */ |
2717 | long_jump, | |
c906108c | 2718 | |
c5aa993b JM |
2719 | /* We hit the longjmp_resume breakpoint. */ |
2720 | long_resume, | |
c906108c | 2721 | |
c5aa993b JM |
2722 | /* We hit the step_resume breakpoint. */ |
2723 | step_resume, | |
c906108c | 2724 | |
c5aa993b JM |
2725 | /* We hit the through_sigtramp breakpoint. */ |
2726 | through_sig, | |
c906108c | 2727 | |
c5aa993b JM |
2728 | /* We hit the shared library event breakpoint. */ |
2729 | shlib_event, | |
c906108c | 2730 | |
c5aa993b JM |
2731 | /* We caught a shared library event. */ |
2732 | catch_shlib_event, | |
c906108c | 2733 | |
c5aa993b JM |
2734 | /* This is just used to count how many enums there are. */ |
2735 | class_last | |
c906108c SS |
2736 | }; |
2737 | ||
2738 | /* Here is the table which drives this routine. So that we can | |
2739 | format it pretty, we define some abbreviations for the | |
2740 | enum bpstat_what codes. */ | |
2741 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
2742 | #define ss BPSTAT_WHAT_STOP_SILENT | |
2743 | #define sn BPSTAT_WHAT_STOP_NOISY | |
2744 | #define sgl BPSTAT_WHAT_SINGLE | |
2745 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
2746 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
2747 | #define clrs BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE | |
2748 | #define sr BPSTAT_WHAT_STEP_RESUME | |
2749 | #define ts BPSTAT_WHAT_THROUGH_SIGTRAMP | |
2750 | #define shl BPSTAT_WHAT_CHECK_SHLIBS | |
2751 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
2752 | ||
2753 | /* "Can't happen." Might want to print an error message. | |
2754 | abort() is not out of the question, but chances are GDB is just | |
2755 | a bit confused, not unusable. */ | |
2756 | #define err BPSTAT_WHAT_STOP_NOISY | |
2757 | ||
2758 | /* Given an old action and a class, come up with a new action. */ | |
2759 | /* One interesting property of this table is that wp_silent is the same | |
2760 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
2761 | after stopping, the check for whether to step over a breakpoint | |
2762 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
2763 | reference to how we stopped. We retain separate wp_silent and |
2764 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
2765 | |
2766 | Another possibly interesting property of this table is that | |
2767 | there's a partial ordering, priority-like, of the actions. Once | |
2768 | you've decided that some action is appropriate, you'll never go | |
2769 | back and decide something of a lower priority is better. The | |
2770 | ordering is: | |
2771 | ||
7e73cedf | 2772 | kc < clr sgl shl shlr slr sn sr ss ts |
c5aa993b JM |
2773 | sgl < clrs shl shlr slr sn sr ss ts |
2774 | slr < err shl shlr sn sr ss ts | |
2775 | clr < clrs err shl shlr sn sr ss ts | |
2776 | clrs < err shl shlr sn sr ss ts | |
2777 | ss < shl shlr sn sr ts | |
2778 | sn < shl shlr sr ts | |
2779 | sr < shl shlr ts | |
2780 | shl < shlr | |
2781 | ts < | |
2782 | shlr < | |
2783 | ||
43ff13b4 JM |
2784 | What I think this means is that we don't need a damned table |
2785 | here. If you just put the rows and columns in the right order, | |
2786 | it'd look awfully regular. We could simply walk the bpstat list | |
2787 | and choose the highest priority action we find, with a little | |
2788 | logic to handle the 'err' cases, and the CLEAR_LONGJMP_RESUME/ | |
2789 | CLEAR_LONGJMP_RESUME_SINGLE distinction (which breakpoint.h says | |
2790 | is messy anyway). */ | |
c906108c SS |
2791 | |
2792 | /* step_resume entries: a step resume breakpoint overrides another | |
2793 | breakpoint of signal handling (see comment in wait_for_inferior | |
2794 | at first IN_SIGTRAMP where we set the step_resume breakpoint). */ | |
2795 | /* We handle the through_sigtramp_breakpoint the same way; having both | |
2796 | one of those and a step_resume_breakpoint is probably very rare (?). */ | |
2797 | ||
2798 | static const enum bpstat_what_main_action | |
c5aa993b JM |
2799 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
2800 | { | |
2801 | /* old action */ | |
2802 | /* kc ss sn sgl slr clr clrs sr ts shl shlr | |
2803 | */ | |
2804 | /*no_effect */ | |
2805 | {kc, ss, sn, sgl, slr, clr, clrs, sr, ts, shl, shlr}, | |
2806 | /*wp_silent */ | |
2807 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
2808 | /*wp_noisy */ | |
2809 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
2810 | /*bp_nostop */ | |
2811 | {sgl, ss, sn, sgl, slr, clrs, clrs, sr, ts, shl, shlr}, | |
2812 | /*bp_silent */ | |
2813 | {ss, ss, sn, ss, ss, ss, ss, sr, ts, shl, shlr}, | |
2814 | /*bp_noisy */ | |
2815 | {sn, sn, sn, sn, sn, sn, sn, sr, ts, shl, shlr}, | |
2816 | /*long_jump */ | |
a48bb0b3 | 2817 | {slr, ss, sn, slr, slr, err, err, sr, ts, shl, shlr}, |
c5aa993b JM |
2818 | /*long_resume */ |
2819 | {clr, ss, sn, clrs, err, err, err, sr, ts, shl, shlr}, | |
2820 | /*step_resume */ | |
2821 | {sr, sr, sr, sr, sr, sr, sr, sr, ts, shl, shlr}, | |
2822 | /*through_sig */ | |
2823 | {ts, ts, ts, ts, ts, ts, ts, ts, ts, shl, shlr}, | |
2824 | /*shlib */ | |
2825 | {shl, shl, shl, shl, shl, shl, shl, shl, ts, shl, shlr}, | |
2826 | /*catch_shlib */ | |
2827 | {shlr, shlr, shlr, shlr, shlr, shlr, shlr, shlr, ts, shlr, shlr} | |
2828 | }; | |
c906108c SS |
2829 | |
2830 | #undef kc | |
2831 | #undef ss | |
2832 | #undef sn | |
2833 | #undef sgl | |
2834 | #undef slr | |
2835 | #undef clr | |
2836 | #undef clrs | |
2837 | #undef err | |
2838 | #undef sr | |
2839 | #undef ts | |
2840 | #undef shl | |
2841 | #undef shlr | |
2842 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
2843 | struct bpstat_what retval; | |
2844 | ||
2845 | retval.call_dummy = 0; | |
2846 | for (; bs != NULL; bs = bs->next) | |
2847 | { | |
2848 | enum class bs_class = no_effect; | |
2849 | if (bs->breakpoint_at == NULL) | |
2850 | /* I suspect this can happen if it was a momentary breakpoint | |
2851 | which has since been deleted. */ | |
2852 | continue; | |
2853 | switch (bs->breakpoint_at->type) | |
2854 | { | |
2855 | case bp_none: | |
2856 | continue; | |
2857 | ||
2858 | case bp_breakpoint: | |
2859 | case bp_hardware_breakpoint: | |
2860 | case bp_until: | |
2861 | case bp_finish: | |
2862 | if (bs->stop) | |
2863 | { | |
2864 | if (bs->print) | |
2865 | bs_class = bp_noisy; | |
2866 | else | |
2867 | bs_class = bp_silent; | |
2868 | } | |
2869 | else | |
2870 | bs_class = bp_nostop; | |
2871 | break; | |
2872 | case bp_watchpoint: | |
2873 | case bp_hardware_watchpoint: | |
2874 | case bp_read_watchpoint: | |
2875 | case bp_access_watchpoint: | |
2876 | if (bs->stop) | |
2877 | { | |
2878 | if (bs->print) | |
2879 | bs_class = wp_noisy; | |
2880 | else | |
2881 | bs_class = wp_silent; | |
2882 | } | |
2883 | else | |
53a5351d JM |
2884 | /* There was a watchpoint, but we're not stopping. |
2885 | This requires no further action. */ | |
c906108c SS |
2886 | bs_class = no_effect; |
2887 | break; | |
2888 | case bp_longjmp: | |
2889 | bs_class = long_jump; | |
2890 | break; | |
2891 | case bp_longjmp_resume: | |
2892 | bs_class = long_resume; | |
2893 | break; | |
2894 | case bp_step_resume: | |
2895 | if (bs->stop) | |
2896 | { | |
2897 | bs_class = step_resume; | |
2898 | } | |
2899 | else | |
2900 | /* It is for the wrong frame. */ | |
2901 | bs_class = bp_nostop; | |
2902 | break; | |
2903 | case bp_through_sigtramp: | |
2904 | bs_class = through_sig; | |
2905 | break; | |
2906 | case bp_watchpoint_scope: | |
2907 | bs_class = bp_nostop; | |
2908 | break; | |
c5aa993b JM |
2909 | case bp_shlib_event: |
2910 | bs_class = shlib_event; | |
2911 | break; | |
c4093a6a JM |
2912 | case bp_thread_event: |
2913 | bs_class = bp_nostop; | |
2914 | break; | |
c5aa993b JM |
2915 | case bp_catch_load: |
2916 | case bp_catch_unload: | |
2917 | /* Only if this catchpoint triggered should we cause the | |
2918 | step-out-of-dld behaviour. Otherwise, we ignore this | |
2919 | catchpoint. */ | |
2920 | if (bs->stop) | |
2921 | bs_class = catch_shlib_event; | |
2922 | else | |
2923 | bs_class = no_effect; | |
2924 | break; | |
2925 | case bp_catch_fork: | |
2926 | case bp_catch_vfork: | |
2927 | case bp_catch_exec: | |
2928 | if (bs->stop) | |
2929 | { | |
2930 | if (bs->print) | |
2931 | bs_class = bp_noisy; | |
2932 | else | |
2933 | bs_class = bp_silent; | |
2934 | } | |
2935 | else | |
53a5351d JM |
2936 | /* There was a catchpoint, but we're not stopping. |
2937 | This requires no further action. */ | |
c5aa993b JM |
2938 | bs_class = no_effect; |
2939 | break; | |
2940 | case bp_catch_catch: | |
2941 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_CATCH) | |
2942 | bs_class = bp_nostop; | |
2943 | else if (bs->stop) | |
2944 | bs_class = bs->print ? bp_noisy : bp_silent; | |
2945 | break; | |
2946 | case bp_catch_throw: | |
2947 | if (!bs->stop || CURRENT_EXCEPTION_KIND != EX_EVENT_THROW) | |
2948 | bs_class = bp_nostop; | |
2949 | else if (bs->stop) | |
2950 | bs_class = bs->print ? bp_noisy : bp_silent; | |
c906108c | 2951 | break; |
c906108c | 2952 | case bp_call_dummy: |
53a5351d JM |
2953 | /* Make sure the action is stop (silent or noisy), |
2954 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
2955 | bs_class = bp_silent; |
2956 | retval.call_dummy = 1; | |
2957 | break; | |
2958 | } | |
c5aa993b | 2959 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
2960 | } |
2961 | retval.main_action = current_action; | |
2962 | return retval; | |
2963 | } | |
2964 | ||
2965 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
2966 | without hardware support). This isn't related to a specific bpstat, | |
2967 | just to things like whether watchpoints are set. */ | |
2968 | ||
c5aa993b | 2969 | int |
fba45db2 | 2970 | bpstat_should_step (void) |
c906108c SS |
2971 | { |
2972 | struct breakpoint *b; | |
2973 | ALL_BREAKPOINTS (b) | |
2974 | if (b->enable == enabled && b->type == bp_watchpoint) | |
3172dc30 | 2975 | return 1; |
c906108c SS |
2976 | return 0; |
2977 | } | |
2978 | ||
2979 | /* Nonzero if there are enabled hardware watchpoints. */ | |
2980 | int | |
fba45db2 | 2981 | bpstat_have_active_hw_watchpoints (void) |
c906108c SS |
2982 | { |
2983 | struct breakpoint *b; | |
2984 | ALL_BREAKPOINTS (b) | |
2985 | if ((b->enable == enabled) && | |
c5aa993b JM |
2986 | (b->inserted) && |
2987 | ((b->type == bp_hardware_watchpoint) || | |
2988 | (b->type == bp_read_watchpoint) || | |
2989 | (b->type == bp_access_watchpoint))) | |
3172dc30 | 2990 | return 1; |
c906108c SS |
2991 | return 0; |
2992 | } | |
c906108c | 2993 | \f |
c5aa993b | 2994 | |
c906108c SS |
2995 | /* Given a bpstat that records zero or more triggered eventpoints, this |
2996 | function returns another bpstat which contains only the catchpoints | |
2997 | on that first list, if any. */ | |
2998 | void | |
fba45db2 | 2999 | bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list) |
c5aa993b JM |
3000 | { |
3001 | struct bpstats root_bs[1]; | |
3002 | bpstat bs = root_bs; | |
3003 | struct breakpoint *ep; | |
3004 | char *dll_pathname; | |
3005 | ||
c906108c SS |
3006 | bpstat_clear (cp_list); |
3007 | root_bs->next = NULL; | |
c5aa993b JM |
3008 | |
3009 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3010 | { |
3011 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
3012 | ep = ep_list->breakpoint_at; | |
3013 | if (ep == NULL) | |
c5aa993b JM |
3014 | break; |
3015 | if ((ep->type != bp_catch_load) && | |
3016 | (ep->type != bp_catch_unload) && | |
3017 | (ep->type != bp_catch_catch) && | |
53a5351d JM |
3018 | (ep->type != bp_catch_throw)) |
3019 | /* pai: (temp) ADD fork/vfork here!! */ | |
c5aa993b JM |
3020 | continue; |
3021 | ||
c906108c SS |
3022 | /* Yes; add it to the list. */ |
3023 | bs = bpstat_alloc (ep, bs); | |
3024 | *bs = *ep_list; | |
3025 | bs->next = NULL; | |
3026 | bs = root_bs->next; | |
c5aa993b | 3027 | |
c906108c SS |
3028 | #if defined(SOLIB_ADD) |
3029 | /* Also, for each triggered catchpoint, tag it with the name of | |
3030 | the library that caused this trigger. (We copy the name now, | |
3031 | because it's only guaranteed to be available NOW, when the | |
3032 | catchpoint triggers. Clients who may wish to know the name | |
3033 | later must get it from the catchpoint itself.) */ | |
3034 | if (ep->triggered_dll_pathname != NULL) | |
b8c9b27d | 3035 | xfree (ep->triggered_dll_pathname); |
c906108c | 3036 | if (ep->type == bp_catch_load) |
c5aa993b | 3037 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME (inferior_pid); |
c906108c | 3038 | else |
c5aa993b | 3039 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME (inferior_pid); |
c906108c SS |
3040 | #else |
3041 | dll_pathname = NULL; | |
3042 | #endif | |
3043 | if (dll_pathname) | |
3044 | { | |
53a5351d JM |
3045 | ep->triggered_dll_pathname = (char *) |
3046 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3047 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3048 | } | |
3049 | else | |
3050 | ep->triggered_dll_pathname = NULL; | |
3051 | } | |
c5aa993b | 3052 | |
c906108c SS |
3053 | *cp_list = bs; |
3054 | } | |
3055 | ||
c4093a6a | 3056 | /* Print B to gdb_stdout. */ |
c906108c | 3057 | static void |
c4093a6a JM |
3058 | print_one_breakpoint (struct breakpoint *b, |
3059 | CORE_ADDR *last_addr) | |
c906108c | 3060 | { |
c906108c SS |
3061 | register struct command_line *l; |
3062 | register struct symbol *sym; | |
c4093a6a JM |
3063 | struct ep_type_description |
3064 | { | |
3065 | enum bptype type; | |
3066 | char *description; | |
3067 | }; | |
3068 | static struct ep_type_description bptypes[] = | |
c906108c | 3069 | { |
c5aa993b JM |
3070 | {bp_none, "?deleted?"}, |
3071 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3072 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3073 | {bp_until, "until"}, |
3074 | {bp_finish, "finish"}, | |
3075 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3076 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3077 | {bp_read_watchpoint, "read watchpoint"}, |
3078 | {bp_access_watchpoint, "acc watchpoint"}, | |
3079 | {bp_longjmp, "longjmp"}, | |
3080 | {bp_longjmp_resume, "longjmp resume"}, | |
3081 | {bp_step_resume, "step resume"}, | |
3082 | {bp_through_sigtramp, "sigtramp"}, | |
3083 | {bp_watchpoint_scope, "watchpoint scope"}, | |
3084 | {bp_call_dummy, "call dummy"}, | |
3085 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3086 | {bp_thread_event, "thread events"}, |
c5aa993b JM |
3087 | {bp_catch_load, "catch load"}, |
3088 | {bp_catch_unload, "catch unload"}, | |
3089 | {bp_catch_fork, "catch fork"}, | |
3090 | {bp_catch_vfork, "catch vfork"}, | |
3091 | {bp_catch_exec, "catch exec"}, | |
3092 | {bp_catch_catch, "catch catch"}, | |
3093 | {bp_catch_throw, "catch throw"} | |
3094 | }; | |
c4093a6a | 3095 | |
c5aa993b JM |
3096 | static char *bpdisps[] = |
3097 | {"del", "dstp", "dis", "keep"}; | |
c2c6d25f | 3098 | static char bpenables[] = "nynny"; |
c906108c | 3099 | char wrap_indent[80]; |
8b93c638 JM |
3100 | #ifdef UI_OUT |
3101 | struct ui_stream *stb = ui_out_stream_new (uiout); | |
3102 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3103 | #endif | |
c906108c | 3104 | |
c4093a6a | 3105 | annotate_record (); |
8b93c638 JM |
3106 | #ifdef UI_OUT |
3107 | ui_out_list_begin (uiout, "bkpt"); | |
3108 | #endif | |
c4093a6a JM |
3109 | |
3110 | /* 1 */ | |
3111 | annotate_field (0); | |
8b93c638 JM |
3112 | #ifdef UI_OUT |
3113 | ui_out_field_int (uiout, "number", b->number); | |
3114 | #else | |
c4093a6a | 3115 | printf_filtered ("%-3d ", b->number); |
8b93c638 | 3116 | #endif |
c4093a6a JM |
3117 | |
3118 | /* 2 */ | |
3119 | annotate_field (1); | |
3120 | if (((int) b->type > (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3121 | || ((int) b->type != bptypes[(int) b->type].type)) | |
8e65ff28 AC |
3122 | internal_error (__FILE__, __LINE__, |
3123 | "bptypes table does not describe type #%d.", | |
c4093a6a | 3124 | (int) b->type); |
8b93c638 JM |
3125 | #ifdef UI_OUT |
3126 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); | |
3127 | #else | |
c4093a6a | 3128 | printf_filtered ("%-14s ", bptypes[(int) b->type].description); |
8b93c638 | 3129 | #endif |
c4093a6a JM |
3130 | |
3131 | /* 3 */ | |
3132 | annotate_field (2); | |
8b93c638 JM |
3133 | #ifdef UI_OUT |
3134 | ui_out_field_string (uiout, "disp", bpdisps[(int) b->disposition]); | |
3135 | #else | |
c4093a6a | 3136 | printf_filtered ("%-4s ", bpdisps[(int) b->disposition]); |
8b93c638 | 3137 | #endif |
c4093a6a JM |
3138 | |
3139 | /* 4 */ | |
3140 | annotate_field (3); | |
8b93c638 JM |
3141 | #ifdef UI_OUT |
3142 | ui_out_field_fmt (uiout, "enabled", "%c", bpenables[(int) b->enable]); | |
3143 | ui_out_spaces (uiout, 2); | |
3144 | #else | |
c4093a6a | 3145 | printf_filtered ("%-3c ", bpenables[(int) b->enable]); |
8b93c638 | 3146 | #endif |
c4093a6a JM |
3147 | |
3148 | /* 5 and 6 */ | |
3149 | strcpy (wrap_indent, " "); | |
3150 | if (addressprint) | |
3151 | strcat (wrap_indent, " "); | |
3152 | switch (b->type) | |
c5aa993b | 3153 | { |
c4093a6a | 3154 | case bp_none: |
8e65ff28 AC |
3155 | internal_error (__FILE__, __LINE__, |
3156 | "print_one_breakpoint: bp_none encountered\n"); | |
c4093a6a | 3157 | break; |
c906108c | 3158 | |
c4093a6a JM |
3159 | case bp_watchpoint: |
3160 | case bp_hardware_watchpoint: | |
3161 | case bp_read_watchpoint: | |
3162 | case bp_access_watchpoint: | |
3163 | /* Field 4, the address, is omitted (which makes the columns | |
3164 | not line up too nicely with the headers, but the effect | |
3165 | is relatively readable). */ | |
8b93c638 JM |
3166 | #ifdef UI_OUT |
3167 | if (addressprint) | |
3168 | ui_out_field_skip (uiout, "addr"); | |
3169 | annotate_field (5); | |
3170 | print_expression (b->exp, stb->stream); | |
3171 | ui_out_field_stream (uiout, "what", stb); | |
3172 | #else | |
c4093a6a JM |
3173 | annotate_field (5); |
3174 | print_expression (b->exp, gdb_stdout); | |
8b93c638 | 3175 | #endif |
c4093a6a JM |
3176 | break; |
3177 | ||
3178 | case bp_catch_load: | |
3179 | case bp_catch_unload: | |
3180 | /* Field 4, the address, is omitted (which makes the columns | |
3181 | not line up too nicely with the headers, but the effect | |
3182 | is relatively readable). */ | |
8b93c638 JM |
3183 | #ifdef UI_OUT |
3184 | if (addressprint) | |
3185 | ui_out_field_skip (uiout, "addr"); | |
3186 | annotate_field (5); | |
3187 | if (b->dll_pathname == NULL) | |
3188 | { | |
3189 | ui_out_field_string (uiout, "what", "<any library>"); | |
3190 | ui_out_spaces (uiout, 1); | |
3191 | } | |
3192 | else | |
3193 | { | |
3194 | ui_out_text (uiout, "library \""); | |
3195 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3196 | ui_out_text (uiout, "\" "); | |
3197 | } | |
3198 | #else | |
c4093a6a JM |
3199 | annotate_field (5); |
3200 | if (b->dll_pathname == NULL) | |
3201 | printf_filtered ("<any library> "); | |
3202 | else | |
3203 | printf_filtered ("library \"%s\" ", b->dll_pathname); | |
8b93c638 | 3204 | #endif |
c4093a6a JM |
3205 | break; |
3206 | ||
3207 | case bp_catch_fork: | |
3208 | case bp_catch_vfork: | |
3209 | /* Field 4, the address, is omitted (which makes the columns | |
3210 | not line up too nicely with the headers, but the effect | |
3211 | is relatively readable). */ | |
8b93c638 JM |
3212 | #ifdef UI_OUT |
3213 | if (addressprint) | |
3214 | ui_out_field_skip (uiout, "addr"); | |
3215 | annotate_field (5); | |
3216 | if (b->forked_inferior_pid != 0) | |
3217 | { | |
3218 | ui_out_text (uiout, "process "); | |
3219 | ui_out_field_int (uiout, "what", b->forked_inferior_pid); | |
3220 | ui_out_spaces (uiout, 1); | |
3221 | } | |
3222 | #else | |
c4093a6a JM |
3223 | annotate_field (5); |
3224 | if (b->forked_inferior_pid != 0) | |
3225 | printf_filtered ("process %d ", b->forked_inferior_pid); | |
3226 | break; | |
8b93c638 | 3227 | #endif |
c4093a6a JM |
3228 | |
3229 | case bp_catch_exec: | |
3230 | /* Field 4, the address, is omitted (which makes the columns | |
3231 | not line up too nicely with the headers, but the effect | |
3232 | is relatively readable). */ | |
8b93c638 JM |
3233 | #ifdef UI_OUT |
3234 | if (addressprint) | |
3235 | ui_out_field_skip (uiout, "addr"); | |
3236 | annotate_field (5); | |
3237 | if (b->exec_pathname != NULL) | |
3238 | { | |
3239 | ui_out_text (uiout, "program \""); | |
3240 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
3241 | ui_out_text (uiout, "\" "); | |
3242 | } | |
3243 | #else | |
c4093a6a JM |
3244 | annotate_field (5); |
3245 | if (b->exec_pathname != NULL) | |
3246 | printf_filtered ("program \"%s\" ", b->exec_pathname); | |
8b93c638 | 3247 | #endif |
c4093a6a | 3248 | break; |
c906108c | 3249 | |
c4093a6a JM |
3250 | case bp_catch_catch: |
3251 | /* Field 4, the address, is omitted (which makes the columns | |
3252 | not line up too nicely with the headers, but the effect | |
3253 | is relatively readable). */ | |
8b93c638 JM |
3254 | #ifdef UI_OUT |
3255 | if (addressprint) | |
3256 | ui_out_field_skip (uiout, "addr"); | |
3257 | annotate_field (5); | |
3258 | ui_out_field_string (uiout, "what", "exception catch"); | |
3259 | ui_out_spaces (uiout, 1); | |
3260 | #else | |
c4093a6a JM |
3261 | annotate_field (5); |
3262 | printf_filtered ("exception catch "); | |
8b93c638 | 3263 | #endif |
c4093a6a | 3264 | break; |
c906108c | 3265 | |
c4093a6a JM |
3266 | case bp_catch_throw: |
3267 | /* Field 4, the address, is omitted (which makes the columns | |
3268 | not line up too nicely with the headers, but the effect | |
3269 | is relatively readable). */ | |
8b93c638 JM |
3270 | #ifdef UI_OUT |
3271 | if (addressprint) | |
3272 | ui_out_field_skip (uiout, "addr"); | |
3273 | annotate_field (5); | |
3274 | ui_out_field_string (uiout, "what", "exception throw"); | |
3275 | ui_out_spaces (uiout, 1); | |
3276 | #else | |
c4093a6a JM |
3277 | annotate_field (5); |
3278 | printf_filtered ("exception throw "); | |
8b93c638 | 3279 | #endif |
c4093a6a JM |
3280 | break; |
3281 | ||
3282 | case bp_breakpoint: | |
3283 | case bp_hardware_breakpoint: | |
3284 | case bp_until: | |
3285 | case bp_finish: | |
3286 | case bp_longjmp: | |
3287 | case bp_longjmp_resume: | |
3288 | case bp_step_resume: | |
3289 | case bp_through_sigtramp: | |
3290 | case bp_watchpoint_scope: | |
3291 | case bp_call_dummy: | |
3292 | case bp_shlib_event: | |
3293 | case bp_thread_event: | |
8b93c638 JM |
3294 | #ifdef UI_OUT |
3295 | if (addressprint) | |
3296 | { | |
3297 | annotate_field (4); | |
3298 | ui_out_field_core_addr (uiout, "addr", b->address); | |
3299 | } | |
3300 | annotate_field (5); | |
3301 | *last_addr = b->address; | |
3302 | if (b->source_file) | |
3303 | { | |
3304 | sym = find_pc_sect_function (b->address, b->section); | |
3305 | if (sym) | |
3306 | { | |
3307 | ui_out_text (uiout, "in "); | |
3308 | ui_out_field_string (uiout, "func", | |
3309 | SYMBOL_SOURCE_NAME (sym)); | |
3310 | ui_out_wrap_hint (uiout, wrap_indent); | |
3311 | ui_out_text (uiout, " at "); | |
3312 | } | |
3313 | ui_out_field_string (uiout, "file", b->source_file); | |
3314 | ui_out_text (uiout, ":"); | |
3315 | ui_out_field_int (uiout, "line", b->line_number); | |
3316 | } | |
3317 | else | |
3318 | { | |
3319 | print_address_symbolic (b->address, stb->stream, demangle, ""); | |
3320 | ui_out_field_stream (uiout, "at", stb); | |
3321 | } | |
3322 | #else | |
c5aa993b | 3323 | if (addressprint) |
c5aa993b | 3324 | { |
c4093a6a JM |
3325 | annotate_field (4); |
3326 | /* FIXME-32x64: need a print_address_numeric with | |
3327 | field width */ | |
d85310f7 MS |
3328 | printf_filtered ("%s ", |
3329 | local_hex_string_custom | |
3330 | ((unsigned long) b->address, "08l")); | |
c4093a6a JM |
3331 | } |
3332 | annotate_field (5); | |
3333 | *last_addr = b->address; | |
3334 | if (b->source_file) | |
3335 | { | |
3336 | sym = find_pc_sect_function (b->address, b->section); | |
3337 | if (sym) | |
c5aa993b | 3338 | { |
c4093a6a JM |
3339 | fputs_filtered ("in ", gdb_stdout); |
3340 | fputs_filtered (SYMBOL_SOURCE_NAME (sym), gdb_stdout); | |
3341 | wrap_here (wrap_indent); | |
3342 | fputs_filtered (" at ", gdb_stdout); | |
c5aa993b | 3343 | } |
c4093a6a JM |
3344 | fputs_filtered (b->source_file, gdb_stdout); |
3345 | printf_filtered (":%d", b->line_number); | |
c5aa993b | 3346 | } |
c4093a6a JM |
3347 | else |
3348 | print_address_symbolic (b->address, gdb_stdout, demangle, " "); | |
8b93c638 | 3349 | #endif |
c4093a6a JM |
3350 | break; |
3351 | } | |
3352 | ||
3353 | if (b->thread != -1) | |
3354 | { | |
8b93c638 JM |
3355 | #ifdef UI_OUT |
3356 | /* FIXME: This seems to be redundant and lost here; see the | |
3357 | "stop only in" line a little further down. */ | |
3358 | ui_out_text (uiout, " thread "); | |
3359 | ui_out_field_int (uiout, "thread", b->thread); | |
3360 | #else | |
c4093a6a | 3361 | printf_filtered (" thread %d", b->thread); |
8b93c638 | 3362 | #endif |
c4093a6a JM |
3363 | } |
3364 | ||
8b93c638 JM |
3365 | #ifdef UI_OUT |
3366 | ui_out_text (uiout, "\n"); | |
3367 | #else | |
c4093a6a | 3368 | printf_filtered ("\n"); |
8b93c638 | 3369 | #endif |
c4093a6a JM |
3370 | |
3371 | if (b->frame) | |
3372 | { | |
3373 | annotate_field (6); | |
8b93c638 JM |
3374 | #ifdef UI_OUT |
3375 | ui_out_text (uiout, "\tstop only in stack frame at "); | |
3376 | ui_out_field_core_addr (uiout, "frame", b->frame); | |
3377 | ui_out_text (uiout, "\n"); | |
3378 | #else | |
c4093a6a JM |
3379 | printf_filtered ("\tstop only in stack frame at "); |
3380 | print_address_numeric (b->frame, 1, gdb_stdout); | |
c5aa993b | 3381 | printf_filtered ("\n"); |
8b93c638 | 3382 | #endif |
c4093a6a JM |
3383 | } |
3384 | ||
3385 | if (b->cond) | |
3386 | { | |
3387 | annotate_field (7); | |
8b93c638 JM |
3388 | #ifdef UI_OUT |
3389 | ui_out_text (uiout, "\tstop only if "); | |
3390 | print_expression (b->cond, stb->stream); | |
3391 | ui_out_field_stream (uiout, "cond", stb); | |
3392 | ui_out_text (uiout, "\n"); | |
3393 | #else | |
c4093a6a JM |
3394 | printf_filtered ("\tstop only if "); |
3395 | print_expression (b->cond, gdb_stdout); | |
3396 | printf_filtered ("\n"); | |
8b93c638 | 3397 | #endif |
c4093a6a JM |
3398 | } |
3399 | ||
3400 | if (b->thread != -1) | |
3401 | { | |
3402 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3403 | #ifdef UI_OUT |
3404 | ui_out_text (uiout, "\tstop only in thread "); | |
3405 | ui_out_field_int (uiout, "thread", b->thread); | |
3406 | ui_out_text (uiout, "\n"); | |
3407 | #else | |
c4093a6a | 3408 | printf_filtered ("\tstop only in thread %d\n", b->thread); |
8b93c638 | 3409 | #endif |
c4093a6a JM |
3410 | } |
3411 | ||
3412 | if (show_breakpoint_hit_counts && b->hit_count) | |
3413 | { | |
3414 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3415 | #ifdef UI_OUT |
3416 | if (ep_is_catchpoint (b)) | |
3417 | ui_out_text (uiout, "\tcatchpoint"); | |
3418 | else | |
3419 | ui_out_text (uiout, "\tbreakpoint"); | |
3420 | ui_out_text (uiout, " already hit "); | |
3421 | ui_out_field_int (uiout, "times", b->hit_count); | |
3422 | if (b->hit_count == 1) | |
3423 | ui_out_text (uiout, " time\n"); | |
3424 | else | |
3425 | ui_out_text (uiout, " times\n"); | |
3426 | #else | |
c4093a6a JM |
3427 | if (ep_is_catchpoint (b)) |
3428 | printf_filtered ("\tcatchpoint"); | |
3429 | else | |
3430 | printf_filtered ("\tbreakpoint"); | |
3431 | printf_filtered (" already hit %d time%s\n", | |
3432 | b->hit_count, (b->hit_count == 1 ? "" : "s")); | |
8b93c638 | 3433 | #endif |
c4093a6a JM |
3434 | } |
3435 | ||
fb40c209 AC |
3436 | #ifdef UI_OUT |
3437 | /* Output the count also if it is zero, but only if this is | |
3438 | mi. FIXME: Should have a better test for this. */ | |
3439 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
3440 | if (show_breakpoint_hit_counts && b->hit_count == 0) | |
3441 | ui_out_field_int (uiout, "times", b->hit_count); | |
3442 | #endif | |
8b93c638 | 3443 | |
c4093a6a JM |
3444 | if (b->ignore_count) |
3445 | { | |
3446 | annotate_field (8); | |
8b93c638 JM |
3447 | #ifdef UI_OUT |
3448 | ui_out_text (uiout, "\tignore next "); | |
3449 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3450 | ui_out_text (uiout, " hits\n"); | |
3451 | #else | |
c4093a6a | 3452 | printf_filtered ("\tignore next %d hits\n", b->ignore_count); |
8b93c638 | 3453 | #endif |
c4093a6a JM |
3454 | } |
3455 | ||
3456 | if ((l = b->commands)) | |
3457 | { | |
3458 | annotate_field (9); | |
8b93c638 JM |
3459 | #ifdef UI_OUT |
3460 | ui_out_list_begin (uiout, "script"); | |
3461 | print_command_lines (uiout, l, 4); | |
3462 | ui_out_list_end (uiout); | |
3463 | #else | |
c4093a6a | 3464 | while (l) |
c5aa993b | 3465 | { |
c4093a6a JM |
3466 | print_command_line (l, 4, gdb_stdout); |
3467 | l = l->next; | |
c5aa993b | 3468 | } |
8b93c638 | 3469 | #endif |
c4093a6a | 3470 | } |
8b93c638 JM |
3471 | #ifdef UI_OUT |
3472 | ui_out_list_end (uiout); | |
3473 | do_cleanups (old_chain); | |
3474 | #endif | |
c4093a6a | 3475 | } |
c5aa993b | 3476 | |
c4093a6a JM |
3477 | struct captured_breakpoint_query_args |
3478 | { | |
3479 | int bnum; | |
3480 | }; | |
c5aa993b | 3481 | |
c4093a6a JM |
3482 | static int |
3483 | do_captured_breakpoint_query (void *data) | |
3484 | { | |
3485 | struct captured_breakpoint_query_args *args = data; | |
3486 | register struct breakpoint *b; | |
3487 | CORE_ADDR dummy_addr = 0; | |
3488 | ALL_BREAKPOINTS (b) | |
3489 | { | |
3490 | if (args->bnum == b->number) | |
c5aa993b | 3491 | { |
c4093a6a JM |
3492 | print_one_breakpoint (b, &dummy_addr); |
3493 | return GDB_RC_OK; | |
c5aa993b | 3494 | } |
c4093a6a JM |
3495 | } |
3496 | return GDB_RC_NONE; | |
3497 | } | |
c5aa993b | 3498 | |
c4093a6a JM |
3499 | enum gdb_rc |
3500 | gdb_breakpoint_query (/* output object, */ int bnum) | |
3501 | { | |
3502 | struct captured_breakpoint_query_args args; | |
3503 | args.bnum = bnum; | |
3504 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3505 | an error. */ | |
3506 | return catch_errors (do_captured_breakpoint_query, &args, | |
3507 | NULL, RETURN_MASK_ALL); | |
3508 | } | |
c5aa993b | 3509 | |
c4093a6a JM |
3510 | /* Print information on breakpoint number BNUM, or -1 if all. |
3511 | If WATCHPOINTS is zero, process only breakpoints; if WATCHPOINTS | |
3512 | is nonzero, process only watchpoints. */ | |
c906108c | 3513 | |
c4093a6a | 3514 | static void |
fba45db2 | 3515 | breakpoint_1 (int bnum, int allflag) |
c4093a6a JM |
3516 | { |
3517 | register struct breakpoint *b; | |
3518 | CORE_ADDR last_addr = (CORE_ADDR) -1; | |
3519 | int found_a_breakpoint = 0; | |
3520 | ||
8b93c638 JM |
3521 | #ifdef UI_OUT |
3522 | if (addressprint) | |
3523 | ui_out_table_begin (uiout, 6, "BreakpointTable"); | |
3524 | else | |
3525 | ui_out_table_begin (uiout, 5, "BreakpointTable"); | |
3526 | #endif /* UI_OUT */ | |
3527 | ||
c4093a6a JM |
3528 | ALL_BREAKPOINTS (b) |
3529 | if (bnum == -1 | |
3530 | || bnum == b->number) | |
3531 | { | |
3532 | /* We only print out user settable breakpoints unless the | |
3533 | allflag is set. */ | |
3534 | if (!allflag | |
3535 | && b->type != bp_breakpoint | |
3536 | && b->type != bp_catch_load | |
3537 | && b->type != bp_catch_unload | |
3538 | && b->type != bp_catch_fork | |
3539 | && b->type != bp_catch_vfork | |
3540 | && b->type != bp_catch_exec | |
3541 | && b->type != bp_catch_catch | |
3542 | && b->type != bp_catch_throw | |
3543 | && b->type != bp_hardware_breakpoint | |
3544 | && b->type != bp_watchpoint | |
3545 | && b->type != bp_read_watchpoint | |
3546 | && b->type != bp_access_watchpoint | |
3547 | && b->type != bp_hardware_watchpoint) | |
3548 | continue; | |
3549 | ||
3550 | if (!found_a_breakpoint++) | |
3551 | { | |
3552 | annotate_breakpoints_headers (); | |
8b93c638 JM |
3553 | #ifdef UI_OUT |
3554 | annotate_field (0); | |
3555 | ui_out_table_header (uiout, 3, ui_left, "Num"); /* 1 */ | |
3556 | annotate_field (1); | |
3557 | ui_out_table_header (uiout, 14, ui_left, "Type"); /* 2 */ | |
3558 | annotate_field (2); | |
3559 | ui_out_table_header (uiout, 4, ui_left, "Disp"); /* 3 */ | |
3560 | annotate_field (3); | |
3561 | ui_out_table_header (uiout, 3, ui_left, "Enb"); /* 4 */ | |
3562 | if (addressprint) | |
3563 | { | |
3564 | annotate_field (4); | |
3565 | ui_out_table_header (uiout, 10, ui_left, "Address"); /* 5 */ | |
3566 | } | |
3567 | annotate_field (5); | |
3568 | ui_out_table_header (uiout, 40, ui_noalign, "What"); /* 6 */ | |
3569 | ui_out_table_body (uiout); | |
3570 | #else | |
c4093a6a JM |
3571 | annotate_field (0); |
3572 | printf_filtered ("Num "); | |
3573 | annotate_field (1); | |
3574 | printf_filtered ("Type "); | |
3575 | annotate_field (2); | |
3576 | printf_filtered ("Disp "); | |
3577 | annotate_field (3); | |
3578 | printf_filtered ("Enb "); | |
3579 | if (addressprint) | |
3580 | { | |
3581 | annotate_field (4); | |
3582 | printf_filtered ("Address "); | |
3583 | } | |
3584 | annotate_field (5); | |
3585 | printf_filtered ("What\n"); | |
8b93c638 | 3586 | #endif /* UI_OUT */ |
c4093a6a JM |
3587 | annotate_breakpoints_table (); |
3588 | } | |
3589 | ||
3590 | print_one_breakpoint (b, &last_addr); | |
3591 | } | |
3592 | ||
c906108c SS |
3593 | if (!found_a_breakpoint) |
3594 | { | |
8b93c638 JM |
3595 | #ifdef UI_OUT |
3596 | if (bnum == -1) | |
3597 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3598 | else | |
3599 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3600 | bnum); | |
3601 | #else | |
c906108c | 3602 | if (bnum == -1) |
c5aa993b | 3603 | printf_filtered ("No breakpoints or watchpoints.\n"); |
c906108c | 3604 | else |
c5aa993b | 3605 | printf_filtered ("No breakpoint or watchpoint number %d.\n", bnum); |
8b93c638 | 3606 | #endif /* UI_OUT */ |
c906108c SS |
3607 | } |
3608 | else | |
c4093a6a JM |
3609 | { |
3610 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3611 | that a comparison of an unsigned with -1 is always false. */ | |
3612 | if (last_addr != (CORE_ADDR) -1) | |
3613 | set_next_address (last_addr); | |
3614 | } | |
c906108c | 3615 | |
8b93c638 JM |
3616 | #ifdef UI_OUT |
3617 | ui_out_table_end (uiout); | |
3618 | #endif /* UI_OUT */ | |
c4093a6a JM |
3619 | /* FIXME? Should this be moved up so that it is only called when |
3620 | there have been breakpoints? */ | |
c906108c SS |
3621 | annotate_breakpoints_table_end (); |
3622 | } | |
3623 | ||
3624 | /* ARGSUSED */ | |
3625 | static void | |
fba45db2 | 3626 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
3627 | { |
3628 | int bnum = -1; | |
3629 | ||
3630 | if (bnum_exp) | |
bb518678 | 3631 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3632 | |
3633 | breakpoint_1 (bnum, 0); | |
3634 | } | |
3635 | ||
c906108c | 3636 | /* ARGSUSED */ |
7a292a7a | 3637 | static void |
fba45db2 | 3638 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
3639 | { |
3640 | int bnum = -1; | |
3641 | ||
3642 | if (bnum_exp) | |
bb518678 | 3643 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3644 | |
3645 | breakpoint_1 (bnum, 1); | |
3646 | } | |
3647 | ||
c906108c SS |
3648 | /* Print a message describing any breakpoints set at PC. */ |
3649 | ||
3650 | static void | |
fba45db2 | 3651 | describe_other_breakpoints (CORE_ADDR pc, asection *section) |
c906108c SS |
3652 | { |
3653 | register int others = 0; | |
3654 | register struct breakpoint *b; | |
3655 | ||
3656 | ALL_BREAKPOINTS (b) | |
3657 | if (b->address == pc) | |
c5aa993b JM |
3658 | if (overlay_debugging == 0 || |
3659 | b->section == section) | |
3660 | others++; | |
c906108c SS |
3661 | if (others > 0) |
3662 | { | |
3663 | printf_filtered ("Note: breakpoint%s ", (others > 1) ? "s" : ""); | |
3664 | ALL_BREAKPOINTS (b) | |
3665 | if (b->address == pc) | |
c5aa993b JM |
3666 | if (overlay_debugging == 0 || |
3667 | b->section == section) | |
3668 | { | |
3669 | others--; | |
d85310f7 MS |
3670 | printf_filtered ("%d%s%s ", |
3671 | b->number, | |
3672 | ((b->enable == disabled || | |
3673 | b->enable == shlib_disabled || | |
3674 | b->enable == call_disabled) ? " (disabled)" | |
3675 | : b->enable == permanent ? " (permanent)" | |
3676 | : ""), | |
3677 | (others > 1) ? "," | |
3678 | : ((others == 1) ? " and" : "")); | |
c5aa993b | 3679 | } |
c906108c SS |
3680 | printf_filtered ("also set at pc "); |
3681 | print_address_numeric (pc, 1, gdb_stdout); | |
3682 | printf_filtered (".\n"); | |
3683 | } | |
3684 | } | |
3685 | \f | |
3686 | /* Set the default place to put a breakpoint | |
3687 | for the `break' command with no arguments. */ | |
3688 | ||
3689 | void | |
fba45db2 KB |
3690 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
3691 | int line) | |
c906108c SS |
3692 | { |
3693 | default_breakpoint_valid = valid; | |
3694 | default_breakpoint_address = addr; | |
3695 | default_breakpoint_symtab = symtab; | |
3696 | default_breakpoint_line = line; | |
3697 | } | |
3698 | ||
3699 | /* Rescan breakpoints at address ADDRESS, | |
3700 | marking the first one as "first" and any others as "duplicates". | |
c2c6d25f JM |
3701 | This is so that the bpt instruction is only inserted once. |
3702 | If we have a permanent breakpoint at ADDRESS, make that one | |
3703 | the official one, and the rest as duplicates. */ | |
c906108c SS |
3704 | |
3705 | static void | |
fba45db2 | 3706 | check_duplicates (CORE_ADDR address, asection *section) |
c906108c SS |
3707 | { |
3708 | register struct breakpoint *b; | |
3709 | register int count = 0; | |
c2c6d25f | 3710 | struct breakpoint *perm_bp = 0; |
c906108c SS |
3711 | |
3712 | if (address == 0) /* Watchpoints are uninteresting */ | |
3713 | return; | |
3714 | ||
3715 | ALL_BREAKPOINTS (b) | |
3716 | if (b->enable != disabled | |
3717 | && b->enable != shlib_disabled | |
3718 | && b->enable != call_disabled | |
3719 | && b->address == address | |
3720 | && (overlay_debugging == 0 || b->section == section)) | |
c5aa993b | 3721 | { |
c2c6d25f JM |
3722 | /* Have we found a permanent breakpoint? */ |
3723 | if (b->enable == permanent) | |
3724 | { | |
3725 | perm_bp = b; | |
3726 | break; | |
3727 | } | |
3728 | ||
c5aa993b JM |
3729 | count++; |
3730 | b->duplicate = count > 1; | |
3731 | } | |
c2c6d25f JM |
3732 | |
3733 | /* If we found a permanent breakpoint at this address, go over the | |
3734 | list again and declare all the other breakpoints there to be the | |
3735 | duplicates. */ | |
3736 | if (perm_bp) | |
3737 | { | |
3738 | perm_bp->duplicate = 0; | |
3739 | ||
3740 | /* Permanent breakpoint should always be inserted. */ | |
3741 | if (! perm_bp->inserted) | |
8e65ff28 AC |
3742 | internal_error (__FILE__, __LINE__, |
3743 | "allegedly permanent breakpoint is not " | |
c2c6d25f JM |
3744 | "actually inserted"); |
3745 | ||
3746 | ALL_BREAKPOINTS (b) | |
3747 | if (b != perm_bp) | |
3748 | { | |
3749 | if (b->inserted) | |
8e65ff28 AC |
3750 | internal_error (__FILE__, __LINE__, |
3751 | "another breakpoint was inserted on top of " | |
c2c6d25f JM |
3752 | "a permanent breakpoint"); |
3753 | ||
3754 | if (b->enable != disabled | |
3755 | && b->enable != shlib_disabled | |
3756 | && b->enable != call_disabled | |
3757 | && b->address == address | |
3758 | && (overlay_debugging == 0 || b->section == section)) | |
3759 | b->duplicate = 1; | |
3760 | } | |
3761 | } | |
c906108c SS |
3762 | } |
3763 | ||
3764 | /* Low level routine to set a breakpoint. | |
3765 | Takes as args the three things that every breakpoint must have. | |
3766 | Returns the breakpoint object so caller can set other things. | |
3767 | Does not set the breakpoint number! | |
3768 | Does not print anything. | |
3769 | ||
3770 | ==> This routine should not be called if there is a chance of later | |
3771 | error(); otherwise it leaves a bogus breakpoint on the chain. Validate | |
3772 | your arguments BEFORE calling this routine! */ | |
3773 | ||
3774 | struct breakpoint * | |
fba45db2 | 3775 | set_raw_breakpoint (struct symtab_and_line sal) |
c906108c SS |
3776 | { |
3777 | register struct breakpoint *b, *b1; | |
3778 | ||
3779 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
3780 | memset (b, 0, sizeof (*b)); | |
3781 | b->address = sal.pc; | |
3782 | if (sal.symtab == NULL) | |
3783 | b->source_file = NULL; | |
3784 | else | |
3785 | b->source_file = savestring (sal.symtab->filename, | |
3786 | strlen (sal.symtab->filename)); | |
3787 | b->section = sal.section; | |
3788 | b->language = current_language->la_language; | |
3789 | b->input_radix = input_radix; | |
3790 | b->thread = -1; | |
3791 | b->line_number = sal.line; | |
3792 | b->enable = enabled; | |
3793 | b->next = 0; | |
3794 | b->silent = 0; | |
3795 | b->ignore_count = 0; | |
3796 | b->commands = NULL; | |
3797 | b->frame = 0; | |
3798 | b->dll_pathname = NULL; | |
3799 | b->triggered_dll_pathname = NULL; | |
3800 | b->forked_inferior_pid = 0; | |
3801 | b->exec_pathname = NULL; | |
3802 | ||
3803 | /* Add this breakpoint to the end of the chain | |
3804 | so that a list of breakpoints will come out in order | |
3805 | of increasing numbers. */ | |
3806 | ||
3807 | b1 = breakpoint_chain; | |
3808 | if (b1 == 0) | |
3809 | breakpoint_chain = b; | |
3810 | else | |
3811 | { | |
3812 | while (b1->next) | |
3813 | b1 = b1->next; | |
3814 | b1->next = b; | |
3815 | } | |
3816 | ||
3817 | check_duplicates (sal.pc, sal.section); | |
3818 | breakpoints_changed (); | |
3819 | ||
3820 | return b; | |
3821 | } | |
3822 | ||
c2c6d25f JM |
3823 | |
3824 | /* Note that the breakpoint object B describes a permanent breakpoint | |
3825 | instruction, hard-wired into the inferior's code. */ | |
3826 | void | |
3827 | make_breakpoint_permanent (struct breakpoint *b) | |
3828 | { | |
3829 | b->enable = permanent; | |
3830 | ||
3831 | /* By definition, permanent breakpoints are already present in the code. */ | |
3832 | b->inserted = 1; | |
3833 | } | |
3834 | ||
c906108c SS |
3835 | #ifdef GET_LONGJMP_TARGET |
3836 | ||
3837 | static void | |
fba45db2 | 3838 | create_longjmp_breakpoint (char *func_name) |
c906108c SS |
3839 | { |
3840 | struct symtab_and_line sal; | |
3841 | struct breakpoint *b; | |
3842 | ||
c5aa993b | 3843 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
3844 | if (func_name != NULL) |
3845 | { | |
3846 | struct minimal_symbol *m; | |
3847 | ||
53a5351d JM |
3848 | m = lookup_minimal_symbol_text (func_name, NULL, |
3849 | (struct objfile *) NULL); | |
c906108c SS |
3850 | if (m) |
3851 | sal.pc = SYMBOL_VALUE_ADDRESS (m); | |
3852 | else | |
3853 | return; | |
3854 | } | |
3855 | sal.section = find_pc_overlay (sal.pc); | |
3856 | b = set_raw_breakpoint (sal); | |
c5aa993b JM |
3857 | if (!b) |
3858 | return; | |
c906108c SS |
3859 | |
3860 | b->type = func_name != NULL ? bp_longjmp : bp_longjmp_resume; | |
3861 | b->disposition = donttouch; | |
3862 | b->enable = disabled; | |
3863 | b->silent = 1; | |
3864 | if (func_name) | |
4fcf66da | 3865 | b->addr_string = xstrdup (func_name); |
c906108c SS |
3866 | b->number = internal_breakpoint_number--; |
3867 | } | |
3868 | ||
c5aa993b | 3869 | #endif /* #ifdef GET_LONGJMP_TARGET */ |
c906108c | 3870 | |
53a5351d JM |
3871 | /* Call this routine when stepping and nexting to enable a breakpoint |
3872 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
3873 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
3874 | ||
3875 | void | |
fba45db2 | 3876 | enable_longjmp_breakpoint (void) |
c906108c SS |
3877 | { |
3878 | register struct breakpoint *b; | |
3879 | ||
3880 | ALL_BREAKPOINTS (b) | |
3881 | if (b->type == bp_longjmp) | |
c5aa993b JM |
3882 | { |
3883 | b->enable = enabled; | |
3884 | check_duplicates (b->address, b->section); | |
3885 | } | |
c906108c SS |
3886 | } |
3887 | ||
3888 | void | |
fba45db2 | 3889 | disable_longjmp_breakpoint (void) |
c906108c SS |
3890 | { |
3891 | register struct breakpoint *b; | |
3892 | ||
3893 | ALL_BREAKPOINTS (b) | |
c5aa993b | 3894 | if (b->type == bp_longjmp |
c906108c | 3895 | || b->type == bp_longjmp_resume) |
c5aa993b JM |
3896 | { |
3897 | b->enable = disabled; | |
3898 | check_duplicates (b->address, b->section); | |
3899 | } | |
c906108c SS |
3900 | } |
3901 | ||
c4093a6a | 3902 | struct breakpoint * |
fba45db2 | 3903 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
3904 | { |
3905 | struct breakpoint *b; | |
3906 | struct symtab_and_line sal; | |
3907 | char addr_string[80]; /* Surely an addr can't be longer than that. */ | |
3908 | ||
3909 | INIT_SAL (&sal); /* initialize to zeroes */ | |
3910 | sal.pc = address; | |
3911 | sal.section = find_pc_overlay (sal.pc); | |
3912 | if ((b = set_raw_breakpoint (sal)) == NULL) | |
3913 | return NULL; | |
3914 | ||
3915 | b->number = internal_breakpoint_number--; | |
3916 | b->disposition = donttouch; | |
3917 | b->type = bp_thread_event; /* XXX: do we need a new type? | |
3918 | bp_thread_event */ | |
3919 | b->enable = enabled; | |
3920 | /* addr_string has to be used or breakpoint_re_set will delete me. */ | |
3921 | sprintf (addr_string, "*0x%s", paddr (b->address)); | |
4fcf66da | 3922 | b->addr_string = xstrdup (addr_string); |
c4093a6a JM |
3923 | |
3924 | return b; | |
3925 | } | |
3926 | ||
3927 | void | |
3928 | remove_thread_event_breakpoints (void) | |
3929 | { | |
3930 | struct breakpoint *b, *temp; | |
3931 | ||
3932 | ALL_BREAKPOINTS_SAFE (b, temp) | |
3933 | if (b->type == bp_thread_event) | |
3934 | delete_breakpoint (b); | |
3935 | } | |
3936 | ||
c906108c SS |
3937 | #ifdef SOLIB_ADD |
3938 | void | |
fba45db2 | 3939 | remove_solib_event_breakpoints (void) |
c906108c SS |
3940 | { |
3941 | register struct breakpoint *b, *temp; | |
3942 | ||
3943 | ALL_BREAKPOINTS_SAFE (b, temp) | |
3944 | if (b->type == bp_shlib_event) | |
3172dc30 | 3945 | delete_breakpoint (b); |
c906108c SS |
3946 | } |
3947 | ||
c2c6d25f | 3948 | struct breakpoint * |
fba45db2 | 3949 | create_solib_event_breakpoint (CORE_ADDR address) |
c906108c SS |
3950 | { |
3951 | struct breakpoint *b; | |
3952 | struct symtab_and_line sal; | |
3953 | ||
c5aa993b | 3954 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
3955 | sal.pc = address; |
3956 | sal.section = find_pc_overlay (sal.pc); | |
3957 | b = set_raw_breakpoint (sal); | |
3958 | b->number = internal_breakpoint_number--; | |
3959 | b->disposition = donttouch; | |
3960 | b->type = bp_shlib_event; | |
c2c6d25f JM |
3961 | |
3962 | return b; | |
c906108c SS |
3963 | } |
3964 | ||
104c1213 JM |
3965 | /* Disable any breakpoints that are on code in shared libraries. Only |
3966 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
3967 | ||
c906108c | 3968 | void |
fba45db2 | 3969 | disable_breakpoints_in_shlibs (int silent) |
c906108c | 3970 | { |
c5aa993b JM |
3971 | struct breakpoint *b; |
3972 | int disabled_shlib_breaks = 0; | |
c906108c SS |
3973 | |
3974 | /* See also: insert_breakpoints, under DISABLE_UNSETTABLE_BREAK. */ | |
3975 | ALL_BREAKPOINTS (b) | |
c5aa993b | 3976 | { |
c906108c | 3977 | #if defined (PC_SOLIB) |
c5aa993b JM |
3978 | if (((b->type == bp_breakpoint) || |
3979 | (b->type == bp_hardware_breakpoint)) && | |
104c1213 | 3980 | b->enable == enabled && |
c5aa993b JM |
3981 | !b->duplicate && |
3982 | PC_SOLIB (b->address)) | |
3983 | { | |
3984 | b->enable = shlib_disabled; | |
3985 | if (!silent) | |
3986 | { | |
3987 | if (!disabled_shlib_breaks) | |
3988 | { | |
3989 | target_terminal_ours_for_output (); | |
53a5351d | 3990 | warning ("Temporarily disabling shared library breakpoints:"); |
c5aa993b JM |
3991 | } |
3992 | disabled_shlib_breaks = 1; | |
53a5351d | 3993 | warning ("breakpoint #%d ", b->number); |
c5aa993b JM |
3994 | } |
3995 | } | |
c906108c | 3996 | #endif |
c5aa993b | 3997 | } |
c906108c SS |
3998 | } |
3999 | ||
4000 | /* Try to reenable any breakpoints in shared libraries. */ | |
4001 | void | |
fba45db2 | 4002 | re_enable_breakpoints_in_shlibs (void) |
c906108c SS |
4003 | { |
4004 | struct breakpoint *b; | |
4005 | ||
4006 | ALL_BREAKPOINTS (b) | |
4007 | if (b->enable == shlib_disabled) | |
c5aa993b JM |
4008 | { |
4009 | char buf[1]; | |
c906108c | 4010 | |
c5aa993b JM |
4011 | /* Do not reenable the breakpoint if the shared library |
4012 | is still not mapped in. */ | |
4013 | if (target_read_memory (b->address, buf, 1) == 0) | |
4014 | b->enable = enabled; | |
4015 | } | |
c906108c SS |
4016 | } |
4017 | ||
4018 | #endif | |
4019 | ||
4020 | static void | |
fba45db2 KB |
4021 | solib_load_unload_1 (char *hookname, int tempflag, char *dll_pathname, |
4022 | char *cond_string, enum bptype bp_kind) | |
c906108c | 4023 | { |
c5aa993b | 4024 | struct breakpoint *b; |
c906108c | 4025 | struct symtabs_and_lines sals; |
c5aa993b JM |
4026 | struct cleanup *old_chain; |
4027 | struct cleanup *canonical_strings_chain = NULL; | |
c5aa993b JM |
4028 | char *addr_start = hookname; |
4029 | char *addr_end = NULL; | |
4030 | char **canonical = (char **) NULL; | |
4031 | int thread = -1; /* All threads. */ | |
4032 | ||
c906108c SS |
4033 | /* Set a breakpoint on the specified hook. */ |
4034 | sals = decode_line_1 (&hookname, 1, (struct symtab *) NULL, 0, &canonical); | |
4035 | addr_end = hookname; | |
c5aa993b | 4036 | |
c906108c SS |
4037 | if (sals.nelts == 0) |
4038 | { | |
4039 | warning ("Unable to set a breakpoint on dynamic linker callback."); | |
4040 | warning ("Suggest linking with /opt/langtools/lib/end.o."); | |
4041 | warning ("GDB will be unable to track shl_load/shl_unload calls"); | |
4042 | return; | |
4043 | } | |
4044 | if (sals.nelts != 1) | |
4045 | { | |
53a5351d | 4046 | warning ("Unable to set unique breakpoint on dynamic linker callback."); |
c906108c SS |
4047 | warning ("GDB will be unable to track shl_load/shl_unload calls"); |
4048 | return; | |
4049 | } | |
4050 | ||
53a5351d JM |
4051 | /* Make sure that all storage allocated in decode_line_1 gets freed |
4052 | in case the following errors out. */ | |
b8c9b27d | 4053 | old_chain = make_cleanup (xfree, sals.sals); |
c5aa993b | 4054 | if (canonical != (char **) NULL) |
c906108c | 4055 | { |
b8c9b27d | 4056 | make_cleanup (xfree, canonical); |
c906108c SS |
4057 | canonical_strings_chain = make_cleanup (null_cleanup, 0); |
4058 | if (canonical[0] != NULL) | |
b8c9b27d | 4059 | make_cleanup (xfree, canonical[0]); |
c906108c | 4060 | } |
c5aa993b | 4061 | |
c906108c | 4062 | resolve_sal_pc (&sals.sals[0]); |
c5aa993b | 4063 | |
c906108c | 4064 | /* Remove the canonical strings from the cleanup, they are needed below. */ |
c5aa993b | 4065 | if (canonical != (char **) NULL) |
c906108c | 4066 | discard_cleanups (canonical_strings_chain); |
c5aa993b | 4067 | |
c906108c SS |
4068 | b = set_raw_breakpoint (sals.sals[0]); |
4069 | set_breakpoint_count (breakpoint_count + 1); | |
4070 | b->number = breakpoint_count; | |
4071 | b->cond = NULL; | |
53a5351d JM |
4072 | b->cond_string = (cond_string == NULL) ? |
4073 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c | 4074 | b->thread = thread; |
c5aa993b JM |
4075 | |
4076 | if (canonical != (char **) NULL && canonical[0] != NULL) | |
c906108c SS |
4077 | b->addr_string = canonical[0]; |
4078 | else if (addr_start) | |
4079 | b->addr_string = savestring (addr_start, addr_end - addr_start); | |
c5aa993b | 4080 | |
c906108c SS |
4081 | b->enable = enabled; |
4082 | b->disposition = tempflag ? del : donttouch; | |
c5aa993b | 4083 | |
c906108c SS |
4084 | if (dll_pathname == NULL) |
4085 | b->dll_pathname = NULL; | |
4086 | else | |
4087 | { | |
4088 | b->dll_pathname = (char *) xmalloc (strlen (dll_pathname) + 1); | |
4089 | strcpy (b->dll_pathname, dll_pathname); | |
4090 | } | |
4091 | b->type = bp_kind; | |
c5aa993b | 4092 | |
c906108c SS |
4093 | mention (b); |
4094 | do_cleanups (old_chain); | |
4095 | } | |
4096 | ||
4097 | void | |
fba45db2 KB |
4098 | create_solib_load_event_breakpoint (char *hookname, int tempflag, |
4099 | char *dll_pathname, char *cond_string) | |
c906108c | 4100 | { |
53a5351d JM |
4101 | solib_load_unload_1 (hookname, tempflag, dll_pathname, |
4102 | cond_string, bp_catch_load); | |
c906108c SS |
4103 | } |
4104 | ||
4105 | void | |
fba45db2 KB |
4106 | create_solib_unload_event_breakpoint (char *hookname, int tempflag, |
4107 | char *dll_pathname, char *cond_string) | |
c906108c | 4108 | { |
53a5351d JM |
4109 | solib_load_unload_1 (hookname,tempflag, dll_pathname, |
4110 | cond_string, bp_catch_unload); | |
c906108c SS |
4111 | } |
4112 | ||
4113 | static void | |
fba45db2 KB |
4114 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4115 | enum bptype bp_kind) | |
c906108c | 4116 | { |
c5aa993b JM |
4117 | struct symtab_and_line sal; |
4118 | struct breakpoint *b; | |
4119 | int thread = -1; /* All threads. */ | |
4120 | ||
4121 | INIT_SAL (&sal); | |
c906108c SS |
4122 | sal.pc = 0; |
4123 | sal.symtab = NULL; | |
4124 | sal.line = 0; | |
c5aa993b | 4125 | |
c906108c SS |
4126 | b = set_raw_breakpoint (sal); |
4127 | set_breakpoint_count (breakpoint_count + 1); | |
4128 | b->number = breakpoint_count; | |
4129 | b->cond = NULL; | |
53a5351d JM |
4130 | b->cond_string = (cond_string == NULL) ? |
4131 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4132 | b->thread = thread; |
4133 | b->addr_string = NULL; | |
4134 | b->enable = enabled; | |
4135 | b->disposition = tempflag ? del : donttouch; | |
4136 | b->forked_inferior_pid = 0; | |
c5aa993b | 4137 | |
c906108c | 4138 | b->type = bp_kind; |
c5aa993b | 4139 | |
c906108c SS |
4140 | mention (b); |
4141 | } | |
4142 | ||
4143 | void | |
fba45db2 | 4144 | create_fork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4145 | { |
4146 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
4147 | } | |
c5aa993b | 4148 | |
c906108c | 4149 | void |
fba45db2 | 4150 | create_vfork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4151 | { |
4152 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
4153 | } | |
4154 | ||
4155 | void | |
fba45db2 | 4156 | create_exec_event_catchpoint (int tempflag, char *cond_string) |
c906108c | 4157 | { |
c5aa993b JM |
4158 | struct symtab_and_line sal; |
4159 | struct breakpoint *b; | |
4160 | int thread = -1; /* All threads. */ | |
c906108c | 4161 | |
c5aa993b | 4162 | INIT_SAL (&sal); |
c906108c SS |
4163 | sal.pc = 0; |
4164 | sal.symtab = NULL; | |
4165 | sal.line = 0; | |
4166 | ||
4167 | b = set_raw_breakpoint (sal); | |
4168 | set_breakpoint_count (breakpoint_count + 1); | |
4169 | b->number = breakpoint_count; | |
4170 | b->cond = NULL; | |
53a5351d JM |
4171 | b->cond_string = (cond_string == NULL) ? |
4172 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4173 | b->thread = thread; |
4174 | b->addr_string = NULL; | |
4175 | b->enable = enabled; | |
4176 | b->disposition = tempflag ? del : donttouch; | |
4177 | ||
4178 | b->type = bp_catch_exec; | |
4179 | ||
4180 | mention (b); | |
4181 | } | |
4182 | ||
4183 | static int | |
fba45db2 | 4184 | hw_breakpoint_used_count (void) |
c906108c SS |
4185 | { |
4186 | register struct breakpoint *b; | |
4187 | int i = 0; | |
4188 | ||
4189 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4190 | { |
4191 | if (b->type == bp_hardware_breakpoint && b->enable == enabled) | |
4192 | i++; | |
4193 | } | |
c906108c SS |
4194 | |
4195 | return i; | |
4196 | } | |
4197 | ||
4198 | static int | |
fba45db2 | 4199 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c SS |
4200 | { |
4201 | register struct breakpoint *b; | |
4202 | int i = 0; | |
4203 | ||
4204 | *other_type_used = 0; | |
4205 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4206 | { |
4207 | if (b->enable == enabled) | |
4208 | { | |
4209 | if (b->type == type) | |
4210 | i++; | |
4211 | else if ((b->type == bp_hardware_watchpoint || | |
4212 | b->type == bp_read_watchpoint || | |
4213 | b->type == bp_access_watchpoint) | |
4214 | && b->enable == enabled) | |
4215 | *other_type_used = 1; | |
4216 | } | |
4217 | } | |
c906108c SS |
4218 | return i; |
4219 | } | |
4220 | ||
53a5351d JM |
4221 | /* Call this after hitting the longjmp() breakpoint. Use this to set |
4222 | a new breakpoint at the target of the jmp_buf. | |
c906108c | 4223 | |
53a5351d JM |
4224 | FIXME - This ought to be done by setting a temporary breakpoint |
4225 | that gets deleted automatically... */ | |
c906108c SS |
4226 | |
4227 | void | |
fba45db2 | 4228 | set_longjmp_resume_breakpoint (CORE_ADDR pc, struct frame_info *frame) |
c906108c SS |
4229 | { |
4230 | register struct breakpoint *b; | |
4231 | ||
4232 | ALL_BREAKPOINTS (b) | |
4233 | if (b->type == bp_longjmp_resume) | |
c5aa993b JM |
4234 | { |
4235 | b->address = pc; | |
4236 | b->enable = enabled; | |
4237 | if (frame != NULL) | |
4238 | b->frame = frame->frame; | |
4239 | else | |
4240 | b->frame = 0; | |
4241 | check_duplicates (b->address, b->section); | |
4242 | return; | |
4243 | } | |
c906108c SS |
4244 | } |
4245 | ||
4246 | void | |
fba45db2 | 4247 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4248 | { |
c5aa993b | 4249 | struct breakpoint *b; |
c906108c SS |
4250 | |
4251 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4252 | { |
4253 | if (((b->type == bp_watchpoint) | |
4254 | || (b->type == bp_hardware_watchpoint) | |
4255 | || (b->type == bp_read_watchpoint) | |
4256 | || (b->type == bp_access_watchpoint) | |
4257 | || ep_is_exception_catchpoint (b)) | |
4258 | && (b->enable == enabled)) | |
4259 | { | |
4260 | b->enable = call_disabled; | |
4261 | check_duplicates (b->address, b->section); | |
4262 | } | |
4263 | } | |
c906108c SS |
4264 | } |
4265 | ||
4266 | void | |
fba45db2 | 4267 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4268 | { |
c5aa993b | 4269 | struct breakpoint *b; |
c906108c SS |
4270 | |
4271 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4272 | { |
4273 | if (((b->type == bp_watchpoint) | |
4274 | || (b->type == bp_hardware_watchpoint) | |
4275 | || (b->type == bp_read_watchpoint) | |
4276 | || (b->type == bp_access_watchpoint) | |
4277 | || ep_is_exception_catchpoint (b)) | |
4278 | && (b->enable == call_disabled)) | |
4279 | { | |
4280 | b->enable = enabled; | |
4281 | check_duplicates (b->address, b->section); | |
4282 | } | |
4283 | } | |
c906108c SS |
4284 | } |
4285 | ||
4286 | ||
4287 | /* Set a breakpoint that will evaporate an end of command | |
4288 | at address specified by SAL. | |
4289 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4290 | ||
4291 | struct breakpoint * | |
fba45db2 KB |
4292 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_info *frame, |
4293 | enum bptype type) | |
c906108c SS |
4294 | { |
4295 | register struct breakpoint *b; | |
4296 | b = set_raw_breakpoint (sal); | |
4297 | b->type = type; | |
4298 | b->enable = enabled; | |
4299 | b->disposition = donttouch; | |
4300 | b->frame = (frame ? frame->frame : 0); | |
4301 | ||
4302 | /* If we're debugging a multi-threaded program, then we | |
4303 | want momentary breakpoints to be active in only a | |
4304 | single thread of control. */ | |
4305 | if (in_thread_list (inferior_pid)) | |
4306 | b->thread = pid_to_thread_id (inferior_pid); | |
4307 | ||
4308 | return b; | |
4309 | } | |
c906108c | 4310 | \f |
c5aa993b | 4311 | |
c906108c SS |
4312 | /* Tell the user we have just set a breakpoint B. */ |
4313 | ||
4314 | static void | |
fba45db2 | 4315 | mention (struct breakpoint *b) |
c906108c SS |
4316 | { |
4317 | int say_where = 0; | |
8b93c638 JM |
4318 | #ifdef UI_OUT |
4319 | struct cleanup *old_chain; | |
4320 | struct ui_stream *stb; | |
4321 | ||
4322 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 4323 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
8b93c638 | 4324 | #endif /* UI_OUT */ |
c906108c SS |
4325 | |
4326 | /* FIXME: This is misplaced; mention() is called by things (like hitting a | |
4327 | watchpoint) other than breakpoint creation. It should be possible to | |
4328 | clean this up and at the same time replace the random calls to | |
4329 | breakpoint_changed with this hook, as has already been done for | |
4330 | delete_breakpoint_hook and so on. */ | |
4331 | if (create_breakpoint_hook) | |
4332 | create_breakpoint_hook (b); | |
104c1213 | 4333 | breakpoint_create_event (b->number); |
c906108c SS |
4334 | |
4335 | switch (b->type) | |
4336 | { | |
4337 | case bp_none: | |
4338 | printf_filtered ("(apparently deleted?) Eventpoint %d: ", b->number); | |
4339 | break; | |
8b93c638 JM |
4340 | #ifdef UI_OUT |
4341 | case bp_watchpoint: | |
4342 | ui_out_text (uiout, "Watchpoint "); | |
4343 | ui_out_list_begin (uiout, "wpt"); | |
4344 | ui_out_field_int (uiout, "number", b->number); | |
4345 | ui_out_text (uiout, ": "); | |
4346 | print_expression (b->exp, stb->stream); | |
4347 | ui_out_field_stream (uiout, "exp", stb); | |
4348 | ui_out_list_end (uiout); | |
4349 | break; | |
4350 | case bp_hardware_watchpoint: | |
4351 | ui_out_text (uiout, "Hardware watchpoint "); | |
4352 | ui_out_list_begin (uiout, "wpt"); | |
4353 | ui_out_field_int (uiout, "number", b->number); | |
4354 | ui_out_text (uiout, ": "); | |
4355 | print_expression (b->exp, stb->stream); | |
4356 | ui_out_field_stream (uiout, "exp", stb); | |
4357 | ui_out_list_end (uiout); | |
4358 | break; | |
4359 | #else | |
c906108c SS |
4360 | case bp_watchpoint: |
4361 | printf_filtered ("Watchpoint %d: ", b->number); | |
4362 | print_expression (b->exp, gdb_stdout); | |
4363 | break; | |
4364 | case bp_hardware_watchpoint: | |
4365 | printf_filtered ("Hardware watchpoint %d: ", b->number); | |
4366 | print_expression (b->exp, gdb_stdout); | |
4367 | break; | |
8b93c638 JM |
4368 | #endif |
4369 | #ifdef UI_OUT | |
4370 | case bp_read_watchpoint: | |
4371 | ui_out_text (uiout, "Hardware read watchpoint "); | |
4372 | ui_out_list_begin (uiout, "hw-rwpt"); | |
4373 | ui_out_field_int (uiout, "number", b->number); | |
4374 | ui_out_text (uiout, ": "); | |
4375 | print_expression (b->exp, stb->stream); | |
4376 | ui_out_field_stream (uiout, "exp", stb); | |
4377 | ui_out_list_end (uiout); | |
4378 | break; | |
4379 | case bp_access_watchpoint: | |
4380 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
4381 | ui_out_list_begin (uiout, "hw-awpt"); | |
4382 | ui_out_field_int (uiout, "number", b->number); | |
4383 | ui_out_text (uiout, ": "); | |
4384 | print_expression (b->exp, stb->stream); | |
4385 | ui_out_field_stream (uiout, "exp", stb); | |
4386 | ui_out_list_end (uiout); | |
4387 | break; | |
4388 | #else | |
c906108c SS |
4389 | case bp_read_watchpoint: |
4390 | printf_filtered ("Hardware read watchpoint %d: ", b->number); | |
4391 | print_expression (b->exp, gdb_stdout); | |
4392 | break; | |
4393 | case bp_access_watchpoint: | |
53a5351d JM |
4394 | printf_filtered ("Hardware access (read/write) watchpoint %d: ", |
4395 | b->number); | |
c906108c SS |
4396 | print_expression (b->exp, gdb_stdout); |
4397 | break; | |
8b93c638 | 4398 | #endif |
c906108c | 4399 | case bp_breakpoint: |
fb40c209 AC |
4400 | #ifdef UI_OUT |
4401 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
4402 | { | |
4403 | say_where = 0; | |
4404 | break; | |
4405 | } | |
4406 | #endif | |
c906108c SS |
4407 | printf_filtered ("Breakpoint %d", b->number); |
4408 | say_where = 1; | |
4409 | break; | |
4410 | case bp_hardware_breakpoint: | |
fb40c209 AC |
4411 | #ifdef UI_OUT |
4412 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
4413 | { | |
4414 | say_where = 0; | |
4415 | break; | |
4416 | } | |
4417 | #endif | |
c906108c SS |
4418 | printf_filtered ("Hardware assisted breakpoint %d", b->number); |
4419 | say_where = 1; | |
4420 | break; | |
4421 | case bp_catch_load: | |
4422 | case bp_catch_unload: | |
4423 | printf_filtered ("Catchpoint %d (%s %s)", | |
c5aa993b JM |
4424 | b->number, |
4425 | (b->type == bp_catch_load) ? "load" : "unload", | |
53a5351d JM |
4426 | (b->dll_pathname != NULL) ? |
4427 | b->dll_pathname : "<any library>"); | |
c906108c SS |
4428 | break; |
4429 | case bp_catch_fork: | |
4430 | case bp_catch_vfork: | |
4431 | printf_filtered ("Catchpoint %d (%s)", | |
c5aa993b JM |
4432 | b->number, |
4433 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
c906108c SS |
4434 | break; |
4435 | case bp_catch_exec: | |
4436 | printf_filtered ("Catchpoint %d (exec)", | |
c5aa993b | 4437 | b->number); |
c906108c SS |
4438 | break; |
4439 | case bp_catch_catch: | |
4440 | case bp_catch_throw: | |
4441 | printf_filtered ("Catchpoint %d (%s)", | |
c5aa993b JM |
4442 | b->number, |
4443 | (b->type == bp_catch_catch) ? "catch" : "throw"); | |
c906108c SS |
4444 | break; |
4445 | ||
4446 | case bp_until: | |
4447 | case bp_finish: | |
4448 | case bp_longjmp: | |
4449 | case bp_longjmp_resume: | |
4450 | case bp_step_resume: | |
4451 | case bp_through_sigtramp: | |
4452 | case bp_call_dummy: | |
4453 | case bp_watchpoint_scope: | |
4454 | case bp_shlib_event: | |
c4093a6a | 4455 | case bp_thread_event: |
c906108c SS |
4456 | break; |
4457 | } | |
4458 | if (say_where) | |
4459 | { | |
4460 | if (addressprint || b->source_file == NULL) | |
4461 | { | |
4462 | printf_filtered (" at "); | |
4463 | print_address_numeric (b->address, 1, gdb_stdout); | |
4464 | } | |
4465 | if (b->source_file) | |
4466 | printf_filtered (": file %s, line %d.", | |
4467 | b->source_file, b->line_number); | |
c5aa993b JM |
4468 | TUIDO (((TuiOpaqueFuncPtr) tui_vAllSetHasBreakAt, b, 1)); |
4469 | TUIDO (((TuiOpaqueFuncPtr) tuiUpdateAllExecInfos)); | |
c906108c | 4470 | } |
8b93c638 JM |
4471 | #ifdef UI_OUT |
4472 | do_cleanups (old_chain); | |
fb40c209 AC |
4473 | #endif |
4474 | #ifdef UI_OUT | |
4475 | if (interpreter_p && strcmp (interpreter_p, "mi") == 0) | |
4476 | return; | |
8b93c638 | 4477 | #endif |
c906108c SS |
4478 | printf_filtered ("\n"); |
4479 | } | |
c906108c | 4480 | \f |
c5aa993b | 4481 | |
c3f6f71d JM |
4482 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
4483 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i], | |
4484 | COND[i] and COND_STRING[i] values. | |
4485 | ||
4486 | NOTE: If the function succeeds, the caller is expected to cleanup | |
4487 | the arrays ADDR_STRING, COND_STRING, COND and SALS (but not the | |
4488 | array contents). If the function fails (error() is called), the | |
4489 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4490 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
4491 | |
4492 | static void | |
c3f6f71d JM |
4493 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
4494 | struct expression **cond, char **cond_string, | |
4495 | enum bptype type, enum bpdisp disposition, | |
4496 | int thread, int ignore_count, int from_tty) | |
c906108c | 4497 | { |
c3f6f71d JM |
4498 | if (type == bp_hardware_breakpoint) |
4499 | { | |
4500 | int i = hw_breakpoint_used_count (); | |
4501 | int target_resources_ok = | |
4502 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
4503 | i + sals.nelts, 0); | |
4504 | if (target_resources_ok == 0) | |
4505 | error ("No hardware breakpoint support in the target."); | |
4506 | else if (target_resources_ok < 0) | |
4507 | error ("Hardware breakpoints used exceeds limit."); | |
4508 | } | |
c906108c | 4509 | |
c3f6f71d JM |
4510 | /* Now set all the breakpoints. */ |
4511 | { | |
4512 | int i; | |
4513 | for (i = 0; i < sals.nelts; i++) | |
4514 | { | |
4515 | struct breakpoint *b; | |
4516 | struct symtab_and_line sal = sals.sals[i]; | |
c906108c | 4517 | |
c3f6f71d JM |
4518 | if (from_tty) |
4519 | describe_other_breakpoints (sal.pc, sal.section); | |
4520 | ||
4521 | b = set_raw_breakpoint (sal); | |
4522 | set_breakpoint_count (breakpoint_count + 1); | |
4523 | b->number = breakpoint_count; | |
4524 | b->type = type; | |
4525 | b->cond = cond[i]; | |
4526 | b->thread = thread; | |
4527 | b->addr_string = addr_string[i]; | |
4528 | b->cond_string = cond_string[i]; | |
4529 | b->ignore_count = ignore_count; | |
4530 | b->enable = enabled; | |
4531 | b->disposition = disposition; | |
4532 | mention (b); | |
4533 | } | |
4534 | } | |
4535 | } | |
c906108c | 4536 | |
c3f6f71d JM |
4537 | /* Parse ARG which is assumed to be a SAL specification possibly |
4538 | followed by conditionals. On return, SALS contains an array of SAL | |
4539 | addresses found. ADDR_STRING contains a vector of (canonical) | |
4540 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 4541 | |
c3f6f71d JM |
4542 | void |
4543 | parse_breakpoint_sals (char **address, | |
4544 | struct symtabs_and_lines *sals, | |
4545 | char ***addr_string) | |
4546 | { | |
4547 | char *addr_start = *address; | |
4548 | *addr_string = NULL; | |
4549 | /* If no arg given, or if first arg is 'if ', use the default | |
4550 | breakpoint. */ | |
4551 | if ((*address) == NULL | |
4552 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
4553 | { |
4554 | if (default_breakpoint_valid) | |
4555 | { | |
c3f6f71d JM |
4556 | struct symtab_and_line sal; |
4557 | INIT_SAL (&sal); /* initialize to zeroes */ | |
4558 | sals->sals = (struct symtab_and_line *) | |
c906108c SS |
4559 | xmalloc (sizeof (struct symtab_and_line)); |
4560 | sal.pc = default_breakpoint_address; | |
4561 | sal.line = default_breakpoint_line; | |
4562 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 4563 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
4564 | sals->sals[0] = sal; |
4565 | sals->nelts = 1; | |
c906108c SS |
4566 | } |
4567 | else | |
4568 | error ("No default breakpoint address now."); | |
4569 | } | |
4570 | else | |
4571 | { | |
c906108c | 4572 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
4573 | current_source_symtab (which is decode_line_1's default). This |
4574 | should produce the results we want almost all of the time while | |
4575 | leaving default_breakpoint_* alone. */ | |
c906108c SS |
4576 | if (default_breakpoint_valid |
4577 | && (!current_source_symtab | |
c3f6f71d JM |
4578 | || (strchr ("+-", (*address)[0]) != NULL))) |
4579 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, | |
4580 | default_breakpoint_line, addr_string); | |
c906108c | 4581 | else |
c3f6f71d | 4582 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, addr_string); |
c906108c | 4583 | } |
c3f6f71d JM |
4584 | /* For any SAL that didn't have a canonical string, fill one in. */ |
4585 | if (sals->nelts > 0 && *addr_string == NULL) | |
4586 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
4587 | if (addr_start != (*address)) | |
c906108c | 4588 | { |
c3f6f71d JM |
4589 | int i; |
4590 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 4591 | { |
c3f6f71d JM |
4592 | /* Add the string if not present. */ |
4593 | if ((*addr_string)[i] == NULL) | |
4594 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
4595 | } |
4596 | } | |
c3f6f71d | 4597 | } |
c906108c | 4598 | |
c906108c | 4599 | |
c3f6f71d JM |
4600 | /* Convert each SAL into a real PC. Verify that the PC can be |
4601 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 4602 | |
c3f6f71d JM |
4603 | void |
4604 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, | |
4605 | char *address) | |
4606 | { | |
4607 | int i; | |
4608 | for (i = 0; i < sals->nelts; i++) | |
4609 | { | |
4610 | resolve_sal_pc (&sals->sals[i]); | |
c906108c SS |
4611 | |
4612 | /* It's possible for the PC to be nonzero, but still an illegal | |
4613 | value on some targets. | |
4614 | ||
4615 | For example, on HP-UX if you start gdb, and before running the | |
4616 | inferior you try to set a breakpoint on a shared library function | |
4617 | "foo" where the inferior doesn't call "foo" directly but does | |
4618 | pass its address to another function call, then we do find a | |
4619 | minimal symbol for the "foo", but it's address is invalid. | |
4620 | (Appears to be an index into a table that the loader sets up | |
4621 | when the inferior is run.) | |
4622 | ||
4623 | Give the target a chance to bless sals.sals[i].pc before we | |
4624 | try to make a breakpoint for it. */ | |
c3f6f71d | 4625 | if (PC_REQUIRES_RUN_BEFORE_USE (sals->sals[i].pc)) |
c5aa993b | 4626 | { |
c3f6f71d JM |
4627 | if (address == NULL) |
4628 | error ("Cannot break without a running program."); | |
4629 | else | |
4630 | error ("Cannot break on %s without a running program.", | |
4631 | address); | |
c5aa993b | 4632 | } |
c3f6f71d JM |
4633 | } |
4634 | } | |
4635 | ||
4636 | /* Set a breakpoint according to ARG (function, linenum or *address) | |
4637 | flag: first bit : 0 non-temporary, 1 temporary. | |
4638 | second bit : 0 normal breakpoint, 1 hardware breakpoint. */ | |
c5aa993b | 4639 | |
c3f6f71d | 4640 | static void |
fba45db2 | 4641 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d JM |
4642 | { |
4643 | int tempflag, hardwareflag; | |
4644 | struct symtabs_and_lines sals; | |
4645 | register struct expression **cond = 0; | |
4646 | /* Pointers in arg to the start, and one past the end, of the | |
4647 | condition. */ | |
4648 | char **cond_string = (char **) NULL; | |
4649 | char *addr_start = arg; | |
4650 | char **addr_string; | |
4651 | struct cleanup *old_chain; | |
4652 | struct cleanup *breakpoint_chain = NULL; | |
4653 | int i; | |
4654 | int thread = -1; | |
4655 | int ignore_count = 0; | |
4656 | ||
4657 | hardwareflag = flag & BP_HARDWAREFLAG; | |
4658 | tempflag = flag & BP_TEMPFLAG; | |
c906108c | 4659 | |
c3f6f71d JM |
4660 | sals.sals = NULL; |
4661 | sals.nelts = 0; | |
4662 | addr_string = NULL; | |
4663 | parse_breakpoint_sals (&arg, &sals, &addr_string); | |
4664 | ||
4665 | if (!sals.nelts) | |
4666 | return; | |
4667 | ||
4668 | /* Create a chain of things that always need to be cleaned up. */ | |
4669 | old_chain = make_cleanup (null_cleanup, 0); | |
4670 | ||
4671 | /* Make sure that all storage allocated to SALS gets freed. */ | |
b8c9b27d | 4672 | make_cleanup (xfree, sals.sals); |
c3f6f71d JM |
4673 | |
4674 | /* Cleanup the addr_string array but not its contents. */ | |
b8c9b27d | 4675 | make_cleanup (xfree, addr_string); |
c3f6f71d JM |
4676 | |
4677 | /* Allocate space for all the cond expressions. */ | |
4678 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 4679 | make_cleanup (xfree, cond); |
c3f6f71d JM |
4680 | |
4681 | /* Allocate space for all the cond strings. */ | |
4682 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 4683 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
4684 | |
4685 | /* ----------------------------- SNIP ----------------------------- | |
4686 | Anything added to the cleanup chain beyond this point is assumed | |
4687 | to be part of a breakpoint. If the breakpoint create succeeds | |
4688 | then the memory is not reclaimed. */ | |
4689 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
4690 | ||
4691 | /* Mark the contents of the addr_string for cleanup. These go on | |
4692 | the breakpoint_chain and only occure if the breakpoint create | |
4693 | fails. */ | |
4694 | for (i = 0; i < sals.nelts; i++) | |
4695 | { | |
4696 | if (addr_string[i] != NULL) | |
b8c9b27d | 4697 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
4698 | } |
4699 | ||
4700 | /* Resolve all line numbers to PC's and verify that the addresses | |
4701 | are ok for the target. */ | |
4702 | breakpoint_sals_to_pc (&sals, addr_start); | |
4703 | ||
4704 | /* Verify that condition can be parsed, before setting any | |
4705 | breakpoints. Allocate a separate condition expression for each | |
4706 | breakpoint. */ | |
4707 | thread = -1; /* No specific thread yet */ | |
4708 | for (i = 0; i < sals.nelts; i++) | |
4709 | { | |
4710 | char *tok = arg; | |
c906108c SS |
4711 | while (tok && *tok) |
4712 | { | |
c3f6f71d JM |
4713 | char *end_tok; |
4714 | int toklen; | |
4715 | char *cond_start = NULL; | |
4716 | char *cond_end = NULL; | |
c906108c SS |
4717 | while (*tok == ' ' || *tok == '\t') |
4718 | tok++; | |
4719 | ||
4720 | end_tok = tok; | |
4721 | ||
4722 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
4723 | end_tok++; | |
4724 | ||
4725 | toklen = end_tok - tok; | |
4726 | ||
4727 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
4728 | { | |
4729 | tok = cond_start = end_tok + 1; | |
c3f6f71d | 4730 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); |
b8c9b27d | 4731 | make_cleanup (xfree, cond[i]); |
c906108c | 4732 | cond_end = tok; |
c3f6f71d | 4733 | cond_string[i] = savestring (cond_start, cond_end - cond_start); |
b8c9b27d | 4734 | make_cleanup (xfree, cond_string[i]); |
c906108c SS |
4735 | } |
4736 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
4737 | { | |
4738 | char *tmptok; | |
4739 | ||
4740 | tok = end_tok + 1; | |
4741 | tmptok = tok; | |
4742 | thread = strtol (tok, &tok, 0); | |
4743 | if (tok == tmptok) | |
4744 | error ("Junk after thread keyword."); | |
4745 | if (!valid_thread_id (thread)) | |
4746 | error ("Unknown thread %d\n", thread); | |
4747 | } | |
4748 | else | |
4749 | error ("Junk at end of arguments."); | |
4750 | } | |
4751 | } | |
c906108c | 4752 | |
c3f6f71d JM |
4753 | create_breakpoints (sals, addr_string, cond, cond_string, |
4754 | hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
4755 | tempflag ? del : donttouch, | |
4756 | thread, ignore_count, from_tty); | |
4757 | ||
4758 | if (sals.nelts > 1) | |
4759 | { | |
4760 | warning ("Multiple breakpoints were set."); | |
4761 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 4762 | } |
c3f6f71d JM |
4763 | /* That's it. Discard the cleanups for data inserted into the |
4764 | breakpoint. */ | |
4765 | discard_cleanups (breakpoint_chain); | |
4766 | /* But cleanup everything else. */ | |
4767 | do_cleanups (old_chain); | |
4768 | } | |
c906108c | 4769 | |
c3f6f71d JM |
4770 | /* Set a breakpoint of TYPE/DISPOSITION according to ARG (function, |
4771 | linenum or *address) with COND and IGNORE_COUNT. */ | |
c906108c | 4772 | |
c3f6f71d JM |
4773 | struct captured_breakpoint_args |
4774 | { | |
4775 | char *address; | |
4776 | char *condition; | |
4777 | int hardwareflag; | |
4778 | int tempflag; | |
4779 | int thread; | |
4780 | int ignore_count; | |
4781 | }; | |
4782 | ||
4783 | static int | |
4784 | do_captured_breakpoint (void *data) | |
4785 | { | |
4786 | struct captured_breakpoint_args *args = data; | |
4787 | struct symtabs_and_lines sals; | |
4788 | register struct expression **cond; | |
4789 | struct cleanup *old_chain; | |
4790 | struct cleanup *breakpoint_chain = NULL; | |
4791 | int i; | |
4792 | char **addr_string; | |
4793 | char **cond_string; | |
4794 | ||
4795 | char *address_end; | |
4796 | ||
4797 | /* Parse the source and lines spec. Delay check that the expression | |
4798 | didn't contain trailing garbage until after cleanups are in | |
4799 | place. */ | |
4800 | sals.sals = NULL; | |
4801 | sals.nelts = 0; | |
4802 | address_end = args->address; | |
4803 | addr_string = NULL; | |
4804 | parse_breakpoint_sals (&address_end, &sals, &addr_string); | |
4805 | ||
4806 | if (!sals.nelts) | |
4807 | return GDB_RC_NONE; | |
4808 | ||
4809 | /* Create a chain of things at always need to be cleaned up. */ | |
4810 | old_chain = make_cleanup (null_cleanup, 0); | |
4811 | ||
4812 | /* Always have a addr_string array, even if it is empty. */ | |
b8c9b27d | 4813 | make_cleanup (xfree, addr_string); |
c3f6f71d JM |
4814 | |
4815 | /* Make sure that all storage allocated to SALS gets freed. */ | |
b8c9b27d | 4816 | make_cleanup (xfree, sals.sals); |
c3f6f71d JM |
4817 | |
4818 | /* Allocate space for all the cond expressions. */ | |
4819 | cond = xcalloc (sals.nelts, sizeof (struct expression *)); | |
b8c9b27d | 4820 | make_cleanup (xfree, cond); |
c3f6f71d JM |
4821 | |
4822 | /* Allocate space for all the cond strings. */ | |
4823 | cond_string = xcalloc (sals.nelts, sizeof (char **)); | |
b8c9b27d | 4824 | make_cleanup (xfree, cond_string); |
c3f6f71d JM |
4825 | |
4826 | /* ----------------------------- SNIP ----------------------------- | |
4827 | Anything added to the cleanup chain beyond this point is assumed | |
4828 | to be part of a breakpoint. If the breakpoint create goes | |
4829 | through then that memory is not cleaned up. */ | |
4830 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
4831 | ||
4832 | /* Mark the contents of the addr_string for cleanup. These go on | |
4833 | the breakpoint_chain and only occure if the breakpoint create | |
4834 | fails. */ | |
c906108c SS |
4835 | for (i = 0; i < sals.nelts; i++) |
4836 | { | |
c3f6f71d | 4837 | if (addr_string[i] != NULL) |
b8c9b27d | 4838 | make_cleanup (xfree, addr_string[i]); |
c906108c SS |
4839 | } |
4840 | ||
c3f6f71d JM |
4841 | /* Wait until now before checking for garbage at the end of the |
4842 | address. That way cleanups can take care of freeing any | |
4843 | memory. */ | |
4844 | if (*address_end != '\0') | |
4845 | error ("Garbage %s following breakpoint address", address_end); | |
4846 | ||
4847 | /* Resolve all line numbers to PC's. */ | |
4848 | breakpoint_sals_to_pc (&sals, args->address); | |
4849 | ||
4850 | /* Verify that conditions can be parsed, before setting any | |
4851 | breakpoints. */ | |
4852 | for (i = 0; i < sals.nelts; i++) | |
c906108c | 4853 | { |
c3f6f71d JM |
4854 | if (args->condition != NULL) |
4855 | { | |
4856 | char *tok = args->condition; | |
4857 | cond[i] = parse_exp_1 (&tok, block_for_pc (sals.sals[i].pc), 0); | |
4858 | if (*tok != '\0') | |
4859 | error ("Garbage %s follows condition", tok); | |
b8c9b27d | 4860 | make_cleanup (xfree, cond[i]); |
c3f6f71d JM |
4861 | cond_string[i] = xstrdup (args->condition); |
4862 | } | |
c906108c | 4863 | } |
c3f6f71d JM |
4864 | |
4865 | create_breakpoints (sals, addr_string, cond, cond_string, | |
4866 | args->hardwareflag ? bp_hardware_breakpoint : bp_breakpoint, | |
4867 | args->tempflag ? del : donttouch, | |
4868 | args->thread, args->ignore_count, 0/*from-tty*/); | |
4869 | ||
4870 | /* That's it. Discard the cleanups for data inserted into the | |
4871 | breakpoint. */ | |
4872 | discard_cleanups (breakpoint_chain); | |
4873 | /* But cleanup everything else. */ | |
c906108c | 4874 | do_cleanups (old_chain); |
c3f6f71d | 4875 | return GDB_RC_OK; |
c906108c SS |
4876 | } |
4877 | ||
c3f6f71d JM |
4878 | enum gdb_rc |
4879 | gdb_breakpoint (char *address, char *condition, | |
4880 | int hardwareflag, int tempflag, | |
4881 | int thread, int ignore_count) | |
4882 | { | |
4883 | struct captured_breakpoint_args args; | |
4884 | args.address = address; | |
4885 | args.condition = condition; | |
4886 | args.hardwareflag = hardwareflag; | |
4887 | args.tempflag = tempflag; | |
4888 | args.thread = thread; | |
4889 | args.ignore_count = ignore_count; | |
4890 | return catch_errors (do_captured_breakpoint, &args, | |
4891 | NULL, RETURN_MASK_ALL); | |
4892 | } | |
4893 | ||
4894 | ||
c906108c | 4895 | static void |
fba45db2 | 4896 | break_at_finish_at_depth_command_1 (char *arg, int flag, int from_tty) |
c906108c SS |
4897 | { |
4898 | struct frame_info *frame; | |
4899 | CORE_ADDR low, high, selected_pc = 0; | |
7f7e9482 AC |
4900 | char *extra_args = NULL; |
4901 | char *level_arg; | |
4902 | char *addr_string; | |
c906108c SS |
4903 | int extra_args_len = 0, if_arg = 0; |
4904 | ||
4905 | if (!arg || | |
4906 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
4907 | { | |
4908 | ||
4909 | if (default_breakpoint_valid) | |
4910 | { | |
4911 | if (selected_frame) | |
4912 | { | |
4913 | selected_pc = selected_frame->pc; | |
4914 | if (arg) | |
4915 | if_arg = 1; | |
4916 | } | |
4917 | else | |
4918 | error ("No selected frame."); | |
4919 | } | |
4920 | else | |
4921 | error ("No default breakpoint address now."); | |
4922 | } | |
4923 | else | |
4924 | { | |
4925 | extra_args = strchr (arg, ' '); | |
4926 | if (extra_args) | |
4927 | { | |
4928 | extra_args++; | |
4929 | extra_args_len = strlen (extra_args); | |
4930 | level_arg = (char *) xmalloc (extra_args - arg); | |
4931 | strncpy (level_arg, arg, extra_args - arg - 1); | |
4932 | level_arg[extra_args - arg - 1] = '\0'; | |
4933 | } | |
4934 | else | |
4935 | { | |
4936 | level_arg = (char *) xmalloc (strlen (arg) + 1); | |
4937 | strcpy (level_arg, arg); | |
4938 | } | |
4939 | ||
4940 | frame = parse_frame_specification (level_arg); | |
4941 | if (frame) | |
4942 | selected_pc = frame->pc; | |
4943 | else | |
4944 | selected_pc = 0; | |
4945 | } | |
4946 | if (if_arg) | |
4947 | { | |
4948 | extra_args = arg; | |
c5aa993b | 4949 | extra_args_len = strlen (arg); |
c906108c SS |
4950 | } |
4951 | ||
4952 | if (selected_pc) | |
4953 | { | |
c5aa993b | 4954 | if (find_pc_partial_function (selected_pc, (char **) NULL, &low, &high)) |
c906108c SS |
4955 | { |
4956 | addr_string = (char *) xmalloc (26 + extra_args_len); | |
4957 | if (extra_args_len) | |
d4f3574e | 4958 | sprintf (addr_string, "*0x%s %s", paddr_nz (high), extra_args); |
c906108c | 4959 | else |
d4f3574e | 4960 | sprintf (addr_string, "*0x%s", paddr_nz (high)); |
c906108c | 4961 | break_command_1 (addr_string, flag, from_tty); |
b8c9b27d | 4962 | xfree (addr_string); |
c906108c SS |
4963 | } |
4964 | else | |
4965 | error ("No function contains the specified address"); | |
4966 | } | |
4967 | else | |
4968 | error ("Unable to set breakpoint at procedure exit"); | |
4969 | } | |
4970 | ||
4971 | ||
4972 | static void | |
fba45db2 | 4973 | break_at_finish_command_1 (char *arg, int flag, int from_tty) |
c906108c SS |
4974 | { |
4975 | char *addr_string, *break_string, *beg_addr_string; | |
4976 | CORE_ADDR low, high; | |
4977 | struct symtabs_and_lines sals; | |
4978 | struct symtab_and_line sal; | |
4979 | struct cleanup *old_chain; | |
7f7e9482 | 4980 | char *extra_args = NULL; |
c906108c SS |
4981 | int extra_args_len = 0; |
4982 | int i, if_arg = 0; | |
4983 | ||
4984 | if (!arg || | |
4985 | (arg[0] == 'i' && arg[1] == 'f' && (arg[2] == ' ' || arg[2] == '\t'))) | |
4986 | { | |
4987 | if (default_breakpoint_valid) | |
4988 | { | |
4989 | if (selected_frame) | |
4990 | { | |
4991 | addr_string = (char *) xmalloc (15); | |
d4f3574e | 4992 | sprintf (addr_string, "*0x%s", paddr_nz (selected_frame->pc)); |
c906108c SS |
4993 | if (arg) |
4994 | if_arg = 1; | |
4995 | } | |
4996 | else | |
4997 | error ("No selected frame."); | |
4998 | } | |
4999 | else | |
5000 | error ("No default breakpoint address now."); | |
5001 | } | |
5002 | else | |
5003 | { | |
5004 | addr_string = (char *) xmalloc (strlen (arg) + 1); | |
5005 | strcpy (addr_string, arg); | |
5006 | } | |
5007 | ||
5008 | if (if_arg) | |
5009 | { | |
5010 | extra_args = arg; | |
c5aa993b JM |
5011 | extra_args_len = strlen (arg); |
5012 | } | |
5013 | else if (arg) | |
5014 | { | |
5015 | /* get the stuff after the function name or address */ | |
5016 | extra_args = strchr (arg, ' '); | |
5017 | if (extra_args) | |
5018 | { | |
5019 | extra_args++; | |
5020 | extra_args_len = strlen (extra_args); | |
5021 | } | |
c906108c | 5022 | } |
c906108c SS |
5023 | |
5024 | sals.sals = NULL; | |
5025 | sals.nelts = 0; | |
5026 | ||
c5aa993b JM |
5027 | beg_addr_string = addr_string; |
5028 | sals = decode_line_1 (&addr_string, 1, (struct symtab *) NULL, 0, | |
5029 | (char ***) NULL); | |
c906108c | 5030 | |
b8c9b27d KB |
5031 | xfree (beg_addr_string); |
5032 | old_chain = make_cleanup (xfree, sals.sals); | |
c906108c SS |
5033 | for (i = 0; (i < sals.nelts); i++) |
5034 | { | |
5035 | sal = sals.sals[i]; | |
c5aa993b | 5036 | if (find_pc_partial_function (sal.pc, (char **) NULL, &low, &high)) |
c906108c SS |
5037 | { |
5038 | break_string = (char *) xmalloc (extra_args_len + 26); | |
5039 | if (extra_args_len) | |
d4f3574e | 5040 | sprintf (break_string, "*0x%s %s", paddr_nz (high), extra_args); |
c906108c | 5041 | else |
d4f3574e | 5042 | sprintf (break_string, "*0x%s", paddr_nz (high)); |
c906108c | 5043 | break_command_1 (break_string, flag, from_tty); |
b8c9b27d | 5044 | xfree (break_string); |
c906108c SS |
5045 | } |
5046 | else | |
5047 | error ("No function contains the specified address"); | |
5048 | } | |
5049 | if (sals.nelts > 1) | |
5050 | { | |
53a5351d JM |
5051 | warning ("Multiple breakpoints were set.\n"); |
5052 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 5053 | } |
c5aa993b | 5054 | do_cleanups (old_chain); |
c906108c SS |
5055 | } |
5056 | ||
5057 | ||
5058 | /* Helper function for break_command_1 and disassemble_command. */ | |
5059 | ||
5060 | void | |
fba45db2 | 5061 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5062 | { |
5063 | CORE_ADDR pc; | |
5064 | ||
5065 | if (sal->pc == 0 && sal->symtab != NULL) | |
5066 | { | |
5067 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
5068 | error ("No line %d in file \"%s\".", | |
5069 | sal->line, sal->symtab->filename); | |
5070 | sal->pc = pc; | |
5071 | } | |
5072 | ||
5073 | if (sal->section == 0 && sal->symtab != NULL) | |
5074 | { | |
5075 | struct blockvector *bv; | |
c5aa993b JM |
5076 | struct block *b; |
5077 | struct symbol *sym; | |
5078 | int index; | |
c906108c | 5079 | |
c5aa993b | 5080 | bv = blockvector_for_pc_sect (sal->pc, 0, &index, sal->symtab); |
c906108c SS |
5081 | if (bv != NULL) |
5082 | { | |
c5aa993b | 5083 | b = BLOCKVECTOR_BLOCK (bv, index); |
c906108c SS |
5084 | sym = block_function (b); |
5085 | if (sym != NULL) | |
5086 | { | |
5087 | fixup_symbol_section (sym, sal->symtab->objfile); | |
5088 | sal->section = SYMBOL_BFD_SECTION (sym); | |
5089 | } | |
5090 | else | |
5091 | { | |
5092 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5093 | have to look harder. This case can be executed if we have |
5094 | line numbers but no functions (as can happen in assembly | |
5095 | source). */ | |
c906108c | 5096 | |
c5aa993b | 5097 | struct minimal_symbol *msym; |
c906108c SS |
5098 | |
5099 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5100 | if (msym) | |
5101 | sal->section = SYMBOL_BFD_SECTION (msym); | |
5102 | } | |
5103 | } | |
5104 | } | |
5105 | } | |
5106 | ||
5107 | void | |
fba45db2 | 5108 | break_command (char *arg, int from_tty) |
c906108c SS |
5109 | { |
5110 | break_command_1 (arg, 0, from_tty); | |
5111 | } | |
5112 | ||
7a292a7a | 5113 | static void |
fba45db2 | 5114 | break_at_finish_command (char *arg, int from_tty) |
c906108c SS |
5115 | { |
5116 | break_at_finish_command_1 (arg, 0, from_tty); | |
5117 | } | |
5118 | ||
7a292a7a | 5119 | static void |
fba45db2 | 5120 | break_at_finish_at_depth_command (char *arg, int from_tty) |
c906108c SS |
5121 | { |
5122 | break_at_finish_at_depth_command_1 (arg, 0, from_tty); | |
5123 | } | |
5124 | ||
5125 | void | |
fba45db2 | 5126 | tbreak_command (char *arg, int from_tty) |
c906108c SS |
5127 | { |
5128 | break_command_1 (arg, BP_TEMPFLAG, from_tty); | |
5129 | } | |
5130 | ||
7a292a7a | 5131 | static void |
fba45db2 | 5132 | tbreak_at_finish_command (char *arg, int from_tty) |
c906108c SS |
5133 | { |
5134 | break_at_finish_command_1 (arg, BP_TEMPFLAG, from_tty); | |
5135 | } | |
5136 | ||
5137 | static void | |
fba45db2 | 5138 | hbreak_command (char *arg, int from_tty) |
c906108c SS |
5139 | { |
5140 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); | |
5141 | } | |
5142 | ||
5143 | static void | |
fba45db2 | 5144 | thbreak_command (char *arg, int from_tty) |
c906108c SS |
5145 | { |
5146 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); | |
5147 | } | |
5148 | ||
5149 | static void | |
fba45db2 | 5150 | stop_command (char *arg, int from_tty) |
c906108c SS |
5151 | { |
5152 | printf_filtered ("Specify the type of breakpoint to set.\n\ | |
5153 | Usage: stop in <function | address>\n\ | |
5154 | stop at <line>\n"); | |
5155 | } | |
5156 | ||
5157 | static void | |
fba45db2 | 5158 | stopin_command (char *arg, int from_tty) |
c906108c SS |
5159 | { |
5160 | int badInput = 0; | |
5161 | ||
c5aa993b | 5162 | if (arg == (char *) NULL) |
c906108c SS |
5163 | badInput = 1; |
5164 | else if (*arg != '*') | |
5165 | { | |
5166 | char *argptr = arg; | |
5167 | int hasColon = 0; | |
5168 | ||
53a5351d JM |
5169 | /* look for a ':'. If this is a line number specification, then |
5170 | say it is bad, otherwise, it should be an address or | |
5171 | function/method name */ | |
c906108c | 5172 | while (*argptr && !hasColon) |
c5aa993b JM |
5173 | { |
5174 | hasColon = (*argptr == ':'); | |
5175 | argptr++; | |
5176 | } | |
c906108c SS |
5177 | |
5178 | if (hasColon) | |
c5aa993b | 5179 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5180 | else |
c5aa993b | 5181 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5182 | } |
5183 | ||
5184 | if (badInput) | |
c5aa993b | 5185 | printf_filtered ("Usage: stop in <function | address>\n"); |
c906108c SS |
5186 | else |
5187 | break_command_1 (arg, 0, from_tty); | |
5188 | } | |
5189 | ||
5190 | static void | |
fba45db2 | 5191 | stopat_command (char *arg, int from_tty) |
c906108c SS |
5192 | { |
5193 | int badInput = 0; | |
5194 | ||
c5aa993b | 5195 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5196 | badInput = 1; |
5197 | else | |
5198 | { | |
5199 | char *argptr = arg; | |
5200 | int hasColon = 0; | |
5201 | ||
5202 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5203 | it is probably a line number. */ |
c906108c | 5204 | while (*argptr && !hasColon) |
c5aa993b JM |
5205 | { |
5206 | hasColon = (*argptr == ':'); | |
5207 | argptr++; | |
5208 | } | |
c906108c SS |
5209 | |
5210 | if (hasColon) | |
c5aa993b | 5211 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5212 | else |
c5aa993b | 5213 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5214 | } |
5215 | ||
5216 | if (badInput) | |
c5aa993b | 5217 | printf_filtered ("Usage: stop at <line>\n"); |
c906108c SS |
5218 | else |
5219 | break_command_1 (arg, 0, from_tty); | |
5220 | } | |
5221 | ||
5222 | /* ARGSUSED */ | |
53a5351d JM |
5223 | /* accessflag: hw_write: watch write, |
5224 | hw_read: watch read, | |
5225 | hw_access: watch access (read or write) */ | |
c906108c | 5226 | static void |
fba45db2 | 5227 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c SS |
5228 | { |
5229 | struct breakpoint *b; | |
5230 | struct symtab_and_line sal; | |
5231 | struct expression *exp; | |
5232 | struct block *exp_valid_block; | |
5233 | struct value *val, *mark; | |
5234 | struct frame_info *frame; | |
5235 | struct frame_info *prev_frame = NULL; | |
5236 | char *exp_start = NULL; | |
5237 | char *exp_end = NULL; | |
5238 | char *tok, *end_tok; | |
5239 | int toklen; | |
5240 | char *cond_start = NULL; | |
5241 | char *cond_end = NULL; | |
5242 | struct expression *cond = NULL; | |
5243 | int i, other_type_used, target_resources_ok = 0; | |
5244 | enum bptype bp_type; | |
5245 | int mem_cnt = 0; | |
5246 | ||
c5aa993b JM |
5247 | INIT_SAL (&sal); /* initialize to zeroes */ |
5248 | ||
c906108c SS |
5249 | /* Parse arguments. */ |
5250 | innermost_block = NULL; | |
5251 | exp_start = arg; | |
5252 | exp = parse_exp_1 (&arg, 0, 0); | |
5253 | exp_end = arg; | |
5254 | exp_valid_block = innermost_block; | |
5255 | mark = value_mark (); | |
5256 | val = evaluate_expression (exp); | |
5257 | release_value (val); | |
5258 | if (VALUE_LAZY (val)) | |
5259 | value_fetch_lazy (val); | |
5260 | ||
5261 | tok = arg; | |
5262 | while (*tok == ' ' || *tok == '\t') | |
5263 | tok++; | |
5264 | end_tok = tok; | |
5265 | ||
5266 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5267 | end_tok++; | |
5268 | ||
5269 | toklen = end_tok - tok; | |
5270 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5271 | { | |
5272 | tok = cond_start = end_tok + 1; | |
5273 | cond = parse_exp_1 (&tok, 0, 0); | |
5274 | cond_end = tok; | |
5275 | } | |
5276 | if (*tok) | |
c5aa993b | 5277 | error ("Junk at end of command."); |
c906108c | 5278 | |
53a5351d | 5279 | if (accessflag == hw_read) |
c5aa993b | 5280 | bp_type = bp_read_watchpoint; |
53a5351d | 5281 | else if (accessflag == hw_access) |
c5aa993b JM |
5282 | bp_type = bp_access_watchpoint; |
5283 | else | |
5284 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
5285 | |
5286 | mem_cnt = can_use_hardware_watchpoint (val); | |
5287 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
5288 | error ("Expression cannot be implemented with read/access watchpoint."); | |
c5aa993b JM |
5289 | if (mem_cnt != 0) |
5290 | { | |
5291 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
5292 | target_resources_ok = |
5293 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
5294 | other_type_used); | |
c5aa993b | 5295 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
53a5351d JM |
5296 | error ("Target does not support this type of hardware watchpoint."); |
5297 | ||
c5aa993b | 5298 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
53a5351d | 5299 | error ("Target can only support one kind of HW watchpoint at a time."); |
c5aa993b | 5300 | } |
c906108c SS |
5301 | |
5302 | #if defined(HPUXHPPA) | |
c5aa993b | 5303 | /* On HP-UX if you set a h/w |
c906108c SS |
5304 | watchpoint before the "run" command, the inferior dies with a e.g., |
5305 | SIGILL once you start it. I initially believed this was due to a | |
5306 | bad interaction between page protection traps and the initial | |
5307 | startup sequence by the dynamic linker. | |
5308 | ||
5309 | However, I tried avoiding that by having HP-UX's implementation of | |
5310 | TARGET_CAN_USE_HW_WATCHPOINT return FALSE if there was no inferior_pid | |
5311 | yet, which forced slow watches before a "run" or "attach", and it | |
5312 | still fails somewhere in the startup code. | |
5313 | ||
5314 | Until I figure out what's happening, I'm disallowing watches altogether | |
5315 | before the "run" or "attach" command. We'll tell the user they must | |
5316 | set watches after getting the program started. */ | |
c5aa993b | 5317 | if (!target_has_execution) |
c906108c SS |
5318 | { |
5319 | warning ("can't do that without a running program; try \"break main\", \"run\" first"); | |
5320 | return; | |
5321 | } | |
5322 | #endif /* HPUXHPPA */ | |
c5aa993b | 5323 | |
c906108c SS |
5324 | /* Now set up the breakpoint. */ |
5325 | b = set_raw_breakpoint (sal); | |
5326 | set_breakpoint_count (breakpoint_count + 1); | |
5327 | b->number = breakpoint_count; | |
5328 | b->disposition = donttouch; | |
5329 | b->exp = exp; | |
5330 | b->exp_valid_block = exp_valid_block; | |
5331 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
5332 | b->val = val; | |
5333 | b->cond = cond; | |
5334 | if (cond_start) | |
5335 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
5336 | else | |
5337 | b->cond_string = 0; | |
c5aa993b | 5338 | |
c906108c SS |
5339 | frame = block_innermost_frame (exp_valid_block); |
5340 | if (frame) | |
5341 | { | |
5342 | prev_frame = get_prev_frame (frame); | |
5343 | b->watchpoint_frame = frame->frame; | |
5344 | } | |
5345 | else | |
c5aa993b | 5346 | b->watchpoint_frame = (CORE_ADDR) 0; |
c906108c SS |
5347 | |
5348 | if (mem_cnt && target_resources_ok > 0) | |
5349 | b->type = bp_type; | |
5350 | else | |
5351 | b->type = bp_watchpoint; | |
5352 | ||
5353 | /* If the expression is "local", then set up a "watchpoint scope" | |
5354 | breakpoint at the point where we've left the scope of the watchpoint | |
5355 | expression. */ | |
5356 | if (innermost_block) | |
5357 | { | |
5358 | if (prev_frame) | |
5359 | { | |
5360 | struct breakpoint *scope_breakpoint; | |
5361 | struct symtab_and_line scope_sal; | |
5362 | ||
5363 | INIT_SAL (&scope_sal); /* initialize to zeroes */ | |
c5aa993b | 5364 | scope_sal.pc = get_frame_pc (prev_frame); |
c906108c SS |
5365 | scope_sal.section = find_pc_overlay (scope_sal.pc); |
5366 | ||
5367 | scope_breakpoint = set_raw_breakpoint (scope_sal); | |
5368 | set_breakpoint_count (breakpoint_count + 1); | |
5369 | scope_breakpoint->number = breakpoint_count; | |
5370 | ||
5371 | scope_breakpoint->type = bp_watchpoint_scope; | |
5372 | scope_breakpoint->enable = enabled; | |
5373 | ||
5374 | /* Automatically delete the breakpoint when it hits. */ | |
5375 | scope_breakpoint->disposition = del; | |
5376 | ||
5377 | /* Only break in the proper frame (help with recursion). */ | |
5378 | scope_breakpoint->frame = prev_frame->frame; | |
5379 | ||
5380 | /* Set the address at which we will stop. */ | |
5381 | scope_breakpoint->address = get_frame_pc (prev_frame); | |
5382 | ||
5383 | /* The scope breakpoint is related to the watchpoint. We | |
5384 | will need to act on them together. */ | |
5385 | b->related_breakpoint = scope_breakpoint; | |
5386 | } | |
5387 | } | |
5388 | value_free_to_mark (mark); | |
5389 | mention (b); | |
5390 | } | |
5391 | ||
5392 | /* Return count of locations need to be watched and can be handled | |
5393 | in hardware. If the watchpoint can not be handled | |
5394 | in hardware return zero. */ | |
5395 | ||
5396 | #if !defined(TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT) | |
53a5351d JM |
5397 | #define TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(BYTE_SIZE) \ |
5398 | ((BYTE_SIZE) <= (REGISTER_SIZE)) | |
5399 | #endif | |
5400 | ||
5401 | #if !defined(TARGET_REGION_OK_FOR_HW_WATCHPOINT) | |
5402 | #define TARGET_REGION_OK_FOR_HW_WATCHPOINT(ADDR,LEN) \ | |
6ab3a9c9 | 5403 | (TARGET_REGION_SIZE_OK_FOR_HW_WATCHPOINT(LEN)) |
c906108c SS |
5404 | #endif |
5405 | ||
5406 | static int | |
fba45db2 | 5407 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
5408 | { |
5409 | int found_memory_cnt = 0; | |
2e70b7b9 | 5410 | struct value *head = v; |
c906108c SS |
5411 | |
5412 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 5413 | if (!can_use_hw_watchpoints) |
c906108c | 5414 | return 0; |
c5aa993b | 5415 | |
5c44784c JM |
5416 | /* Make sure that the value of the expression depends only upon |
5417 | memory contents, and values computed from them within GDB. If we | |
5418 | find any register references or function calls, we can't use a | |
5419 | hardware watchpoint. | |
5420 | ||
5421 | The idea here is that evaluating an expression generates a series | |
5422 | of values, one holding the value of every subexpression. (The | |
5423 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
5424 | a*b+c.) GDB's values hold almost enough information to establish | |
5425 | the criteria given above --- they identify memory lvalues, | |
5426 | register lvalues, computed values, etcetera. So we can evaluate | |
5427 | the expression, and then scan the chain of values that leaves | |
5428 | behind to decide whether we can detect any possible change to the | |
5429 | expression's final value using only hardware watchpoints. | |
5430 | ||
5431 | However, I don't think that the values returned by inferior | |
5432 | function calls are special in any way. So this function may not | |
5433 | notice that an expression involving an inferior function call | |
5434 | can't be watched with hardware watchpoints. FIXME. */ | |
c5aa993b | 5435 | for (; v; v = v->next) |
c906108c | 5436 | { |
5c44784c | 5437 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 5438 | { |
5c44784c JM |
5439 | if (VALUE_LAZY (v)) |
5440 | /* A lazy memory lvalue is one that GDB never needed to fetch; | |
5441 | we either just used its address (e.g., `a' in `a.b') or | |
5442 | we never needed it at all (e.g., `a' in `a,b'). */ | |
5443 | ; | |
53a5351d | 5444 | else |
5c44784c JM |
5445 | { |
5446 | /* Ahh, memory we actually used! Check if we can cover | |
5447 | it with hardware watchpoints. */ | |
2e70b7b9 MS |
5448 | struct type *vtype = check_typedef (VALUE_TYPE (v)); |
5449 | ||
5450 | /* We only watch structs and arrays if user asked for it | |
5451 | explicitly, never if they just happen to appear in a | |
5452 | middle of some value chain. */ | |
5453 | if (v == head | |
5454 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
5455 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
5456 | { | |
5457 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + VALUE_OFFSET (v); | |
5458 | int len = TYPE_LENGTH (VALUE_TYPE (v)); | |
5459 | ||
5460 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
5461 | return 0; | |
5462 | else | |
5463 | found_memory_cnt++; | |
5464 | } | |
5c44784c | 5465 | } |
c5aa993b | 5466 | } |
c906108c | 5467 | else if (v->lval != not_lval && v->modifiable == 0) |
53a5351d JM |
5468 | return 0; /* ??? What does this represent? */ |
5469 | else if (v->lval == lval_register) | |
5470 | return 0; /* cannot watch a register with a HW watchpoint */ | |
c906108c SS |
5471 | } |
5472 | ||
5473 | /* The expression itself looks suitable for using a hardware | |
5474 | watchpoint, but give the target machine a chance to reject it. */ | |
5475 | return found_memory_cnt; | |
5476 | } | |
5477 | ||
8b93c638 JM |
5478 | #ifdef UI_OUT |
5479 | void | |
fba45db2 | 5480 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5481 | { |
5482 | watch_command (arg, from_tty); | |
5483 | } | |
5484 | #endif | |
c5aa993b | 5485 | static void |
fba45db2 | 5486 | watch_command (char *arg, int from_tty) |
c906108c | 5487 | { |
53a5351d | 5488 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
5489 | } |
5490 | ||
8b93c638 JM |
5491 | #ifdef UI_OUT |
5492 | void | |
fba45db2 | 5493 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5494 | { |
5495 | rwatch_command (arg, from_tty); | |
5496 | } | |
5497 | #endif | |
c5aa993b | 5498 | static void |
fba45db2 | 5499 | rwatch_command (char *arg, int from_tty) |
c906108c | 5500 | { |
53a5351d | 5501 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
5502 | } |
5503 | ||
8b93c638 JM |
5504 | #ifdef UI_OUT |
5505 | void | |
fba45db2 | 5506 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
5507 | { |
5508 | awatch_command (arg, from_tty); | |
5509 | } | |
5510 | #endif | |
c5aa993b | 5511 | static void |
fba45db2 | 5512 | awatch_command (char *arg, int from_tty) |
c906108c | 5513 | { |
53a5351d | 5514 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 5515 | } |
c906108c | 5516 | \f |
c5aa993b | 5517 | |
43ff13b4 | 5518 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
5519 | because it uses the mechanisms of breakpoints. */ |
5520 | ||
43ff13b4 JM |
5521 | /* This function is called by fetch_inferior_event via the |
5522 | cmd_continuation pointer, to complete the until command. It takes | |
5523 | care of cleaning up the temporary breakpoints set up by the until | |
5524 | command. */ | |
c2c6d25f JM |
5525 | static void |
5526 | until_break_command_continuation (struct continuation_arg *arg) | |
43ff13b4 | 5527 | { |
0d06e24b JM |
5528 | struct cleanup *cleanups; |
5529 | ||
57e687d9 | 5530 | cleanups = (struct cleanup *) arg->data.pointer; |
0d06e24b | 5531 | do_exec_cleanups (cleanups); |
43ff13b4 JM |
5532 | } |
5533 | ||
c906108c SS |
5534 | /* ARGSUSED */ |
5535 | void | |
fba45db2 | 5536 | until_break_command (char *arg, int from_tty) |
c906108c SS |
5537 | { |
5538 | struct symtabs_and_lines sals; | |
5539 | struct symtab_and_line sal; | |
5540 | struct frame_info *prev_frame = get_prev_frame (selected_frame); | |
5541 | struct breakpoint *breakpoint; | |
5542 | struct cleanup *old_chain; | |
0d06e24b JM |
5543 | struct continuation_arg *arg1; |
5544 | ||
c906108c SS |
5545 | |
5546 | clear_proceed_status (); | |
5547 | ||
5548 | /* Set a breakpoint where the user wants it and at return from | |
5549 | this function */ | |
c5aa993b | 5550 | |
c906108c SS |
5551 | if (default_breakpoint_valid) |
5552 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
c5aa993b | 5553 | default_breakpoint_line, (char ***) NULL); |
c906108c | 5554 | else |
53a5351d JM |
5555 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
5556 | 0, (char ***) NULL); | |
c5aa993b | 5557 | |
c906108c SS |
5558 | if (sals.nelts != 1) |
5559 | error ("Couldn't get information on specified line."); | |
c5aa993b | 5560 | |
c906108c | 5561 | sal = sals.sals[0]; |
b8c9b27d | 5562 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 5563 | |
c906108c SS |
5564 | if (*arg) |
5565 | error ("Junk at end of arguments."); | |
c5aa993b | 5566 | |
c906108c | 5567 | resolve_sal_pc (&sal); |
c5aa993b | 5568 | |
c906108c | 5569 | breakpoint = set_momentary_breakpoint (sal, selected_frame, bp_until); |
c5aa993b | 5570 | |
6426a772 | 5571 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 5572 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 5573 | else |
4d6140d9 | 5574 | old_chain = make_exec_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 JM |
5575 | |
5576 | /* If we are running asynchronously, and the target supports async | |
5577 | execution, we are not waiting for the target to stop, in the call | |
5578 | tp proceed, below. This means that we cannot delete the | |
5579 | brekpoints until the target has actually stopped. The only place | |
5580 | where we get a chance to do that is in fetch_inferior_event, so | |
5581 | we must set things up for that. */ | |
5582 | ||
6426a772 | 5583 | if (event_loop_p && target_can_async_p ()) |
43ff13b4 | 5584 | { |
0d06e24b JM |
5585 | /* In this case the arg for the continuation is just the point |
5586 | in the exec_cleanups chain from where to start doing | |
5587 | cleanups, because all the continuation does is the cleanups in | |
5588 | the exec_cleanup_chain. */ | |
5589 | arg1 = | |
5590 | (struct continuation_arg *) xmalloc (sizeof (struct continuation_arg)); | |
57e687d9 MS |
5591 | arg1->next = NULL; |
5592 | arg1->data.pointer = old_chain; | |
0d06e24b JM |
5593 | |
5594 | add_continuation (until_break_command_continuation, arg1); | |
43ff13b4 | 5595 | } |
c906108c SS |
5596 | |
5597 | /* Keep within the current frame */ | |
c5aa993b | 5598 | |
c906108c SS |
5599 | if (prev_frame) |
5600 | { | |
5601 | sal = find_pc_line (prev_frame->pc, 0); | |
5602 | sal.pc = prev_frame->pc; | |
5603 | breakpoint = set_momentary_breakpoint (sal, prev_frame, bp_until); | |
6426a772 | 5604 | if (!event_loop_p || !target_can_async_p ()) |
4d6140d9 | 5605 | make_cleanup_delete_breakpoint (breakpoint); |
43ff13b4 | 5606 | else |
4d6140d9 | 5607 | make_exec_cleanup_delete_breakpoint (breakpoint); |
c906108c | 5608 | } |
c5aa993b | 5609 | |
c906108c | 5610 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
43ff13b4 JM |
5611 | /* Do the cleanups now, anly if we are not running asynchronously, |
5612 | of if we are, but the target is still synchronous. */ | |
6426a772 | 5613 | if (!event_loop_p || !target_can_async_p ()) |
c5aa993b | 5614 | do_cleanups (old_chain); |
c906108c SS |
5615 | } |
5616 | \f | |
5617 | #if 0 | |
5618 | /* These aren't used; I don't konw what they were for. */ | |
5619 | /* Set a breakpoint at the catch clause for NAME. */ | |
5620 | static int | |
fba45db2 | 5621 | catch_breakpoint (char *name) |
c906108c SS |
5622 | { |
5623 | } | |
5624 | ||
5625 | static int | |
fba45db2 | 5626 | disable_catch_breakpoint (void) |
c906108c SS |
5627 | { |
5628 | } | |
5629 | ||
5630 | static int | |
fba45db2 | 5631 | delete_catch_breakpoint (void) |
c906108c SS |
5632 | { |
5633 | } | |
5634 | ||
5635 | static int | |
fba45db2 | 5636 | enable_catch_breakpoint (void) |
c906108c SS |
5637 | { |
5638 | } | |
5639 | #endif /* 0 */ | |
5640 | ||
5641 | struct sal_chain | |
5642 | { | |
5643 | struct sal_chain *next; | |
5644 | struct symtab_and_line sal; | |
5645 | }; | |
5646 | ||
7a292a7a | 5647 | #if 0 |
c906108c SS |
5648 | /* Not really used -- invocation in handle_gnu_4_16_catch_command |
5649 | had been commented out in the v.4.16 sources, and stays | |
5650 | disabled there now because "catch NAME" syntax isn't allowed. | |
5651 | pai/1997-07-11 */ | |
5652 | /* This isn't used; I don't know what it was for. */ | |
5653 | /* For each catch clause identified in ARGS, run FUNCTION | |
5654 | with that clause as an argument. */ | |
5655 | static struct symtabs_and_lines | |
831662b3 | 5656 | map_catch_names (char *args, int (*function) ()) |
c906108c SS |
5657 | { |
5658 | register char *p = args; | |
5659 | register char *p1; | |
5660 | struct symtabs_and_lines sals; | |
5661 | #if 0 | |
5662 | struct sal_chain *sal_chain = 0; | |
5663 | #endif | |
5664 | ||
5665 | if (p == 0) | |
5666 | error_no_arg ("one or more catch names"); | |
5667 | ||
5668 | sals.nelts = 0; | |
5669 | sals.sals = NULL; | |
5670 | ||
5671 | while (*p) | |
5672 | { | |
5673 | p1 = p; | |
5674 | /* Don't swallow conditional part. */ | |
5675 | if (p1[0] == 'i' && p1[1] == 'f' | |
5676 | && (p1[2] == ' ' || p1[2] == '\t')) | |
5677 | break; | |
5678 | ||
5679 | if (isalpha (*p1)) | |
5680 | { | |
5681 | p1++; | |
5682 | while (isalnum (*p1) || *p1 == '_' || *p1 == '$') | |
5683 | p1++; | |
5684 | } | |
5685 | ||
5686 | if (*p1 && *p1 != ' ' && *p1 != '\t') | |
5687 | error ("Arguments must be catch names."); | |
5688 | ||
5689 | *p1 = 0; | |
5690 | #if 0 | |
5691 | if (function (p)) | |
5692 | { | |
5693 | struct sal_chain *next = (struct sal_chain *) | |
c5aa993b | 5694 | alloca (sizeof (struct sal_chain)); |
c906108c SS |
5695 | next->next = sal_chain; |
5696 | next->sal = get_catch_sal (p); | |
5697 | sal_chain = next; | |
5698 | goto win; | |
5699 | } | |
5700 | #endif | |
5701 | printf_unfiltered ("No catch clause for exception %s.\n", p); | |
5702 | #if 0 | |
5703 | win: | |
5704 | #endif | |
5705 | p = p1; | |
c5aa993b JM |
5706 | while (*p == ' ' || *p == '\t') |
5707 | p++; | |
c906108c SS |
5708 | } |
5709 | } | |
7a292a7a | 5710 | #endif |
c906108c SS |
5711 | |
5712 | /* This shares a lot of code with `print_frame_label_vars' from stack.c. */ | |
5713 | ||
5714 | static struct symtabs_and_lines | |
fba45db2 | 5715 | get_catch_sals (int this_level_only) |
c906108c SS |
5716 | { |
5717 | register struct blockvector *bl; | |
5718 | register struct block *block; | |
5719 | int index, have_default = 0; | |
5720 | CORE_ADDR pc; | |
5721 | struct symtabs_and_lines sals; | |
5722 | struct sal_chain *sal_chain = 0; | |
5723 | char *blocks_searched; | |
5724 | ||
5725 | /* Not sure whether an error message is always the correct response, | |
5726 | but it's better than a core dump. */ | |
5727 | if (selected_frame == NULL) | |
5728 | error ("No selected frame."); | |
5729 | block = get_frame_block (selected_frame); | |
5730 | pc = selected_frame->pc; | |
5731 | ||
5732 | sals.nelts = 0; | |
5733 | sals.sals = NULL; | |
5734 | ||
5735 | if (block == 0) | |
5736 | error ("No symbol table info available.\n"); | |
5737 | ||
5738 | bl = blockvector_for_pc (BLOCK_END (block) - 4, &index); | |
5739 | blocks_searched = (char *) alloca (BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
5740 | memset (blocks_searched, 0, BLOCKVECTOR_NBLOCKS (bl) * sizeof (char)); | |
5741 | ||
5742 | while (block != 0) | |
5743 | { | |
5744 | CORE_ADDR end = BLOCK_END (block) - 4; | |
5745 | int last_index; | |
5746 | ||
5747 | if (bl != blockvector_for_pc (end, &index)) | |
5748 | error ("blockvector blotch"); | |
5749 | if (BLOCKVECTOR_BLOCK (bl, index) != block) | |
5750 | error ("blockvector botch"); | |
5751 | last_index = BLOCKVECTOR_NBLOCKS (bl); | |
5752 | index += 1; | |
5753 | ||
5754 | /* Don't print out blocks that have gone by. */ | |
5755 | while (index < last_index | |
5756 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < pc) | |
5757 | index++; | |
5758 | ||
5759 | while (index < last_index | |
5760 | && BLOCK_END (BLOCKVECTOR_BLOCK (bl, index)) < end) | |
5761 | { | |
5762 | if (blocks_searched[index] == 0) | |
5763 | { | |
5764 | struct block *b = BLOCKVECTOR_BLOCK (bl, index); | |
5765 | int nsyms; | |
5766 | register int i; | |
5767 | register struct symbol *sym; | |
5768 | ||
5769 | nsyms = BLOCK_NSYMS (b); | |
5770 | ||
5771 | for (i = 0; i < nsyms; i++) | |
5772 | { | |
5773 | sym = BLOCK_SYM (b, i); | |
5774 | if (STREQ (SYMBOL_NAME (sym), "default")) | |
5775 | { | |
5776 | if (have_default) | |
5777 | continue; | |
5778 | have_default = 1; | |
5779 | } | |
5780 | if (SYMBOL_CLASS (sym) == LOC_LABEL) | |
5781 | { | |
5782 | struct sal_chain *next = (struct sal_chain *) | |
c5aa993b | 5783 | alloca (sizeof (struct sal_chain)); |
c906108c | 5784 | next->next = sal_chain; |
53a5351d JM |
5785 | next->sal = find_pc_line (SYMBOL_VALUE_ADDRESS (sym), |
5786 | 0); | |
c906108c SS |
5787 | sal_chain = next; |
5788 | } | |
5789 | } | |
5790 | blocks_searched[index] = 1; | |
5791 | } | |
5792 | index++; | |
5793 | } | |
5794 | if (have_default) | |
5795 | break; | |
5796 | if (sal_chain && this_level_only) | |
5797 | break; | |
5798 | ||
5799 | /* After handling the function's top-level block, stop. | |
c5aa993b JM |
5800 | Don't continue to its superblock, the block of |
5801 | per-file symbols. */ | |
c906108c SS |
5802 | if (BLOCK_FUNCTION (block)) |
5803 | break; | |
5804 | block = BLOCK_SUPERBLOCK (block); | |
5805 | } | |
5806 | ||
5807 | if (sal_chain) | |
5808 | { | |
5809 | struct sal_chain *tmp_chain; | |
5810 | ||
5811 | /* Count the number of entries. */ | |
5812 | for (index = 0, tmp_chain = sal_chain; tmp_chain; | |
5813 | tmp_chain = tmp_chain->next) | |
5814 | index++; | |
5815 | ||
5816 | sals.nelts = index; | |
5817 | sals.sals = (struct symtab_and_line *) | |
5818 | xmalloc (index * sizeof (struct symtab_and_line)); | |
5819 | for (index = 0; sal_chain; sal_chain = sal_chain->next, index++) | |
5820 | sals.sals[index] = sal_chain->sal; | |
5821 | } | |
5822 | ||
5823 | return sals; | |
5824 | } | |
5825 | ||
5826 | static void | |
fba45db2 | 5827 | ep_skip_leading_whitespace (char **s) |
c906108c | 5828 | { |
c5aa993b JM |
5829 | if ((s == NULL) || (*s == NULL)) |
5830 | return; | |
5831 | while (isspace (**s)) | |
5832 | *s += 1; | |
c906108c | 5833 | } |
c5aa993b | 5834 | |
c906108c SS |
5835 | /* This function examines a string, and attempts to find a token |
5836 | that might be an event name in the leading characters. If a | |
5837 | possible match is found, a pointer to the last character of | |
5838 | the token is returned. Else, NULL is returned. */ | |
53a5351d | 5839 | |
c906108c | 5840 | static char * |
fba45db2 | 5841 | ep_find_event_name_end (char *arg) |
c906108c | 5842 | { |
c5aa993b JM |
5843 | char *s = arg; |
5844 | char *event_name_end = NULL; | |
5845 | ||
c906108c SS |
5846 | /* If we could depend upon the presense of strrpbrk, we'd use that... */ |
5847 | if (arg == NULL) | |
5848 | return NULL; | |
c5aa993b | 5849 | |
c906108c | 5850 | /* We break out of the loop when we find a token delimiter. |
c5aa993b JM |
5851 | Basically, we're looking for alphanumerics and underscores; |
5852 | anything else delimites the token. */ | |
c906108c SS |
5853 | while (*s != '\0') |
5854 | { | |
c5aa993b JM |
5855 | if (!isalnum (*s) && (*s != '_')) |
5856 | break; | |
c906108c SS |
5857 | event_name_end = s; |
5858 | s++; | |
5859 | } | |
c5aa993b | 5860 | |
c906108c SS |
5861 | return event_name_end; |
5862 | } | |
5863 | ||
c5aa993b | 5864 | |
c906108c SS |
5865 | /* This function attempts to parse an optional "if <cond>" clause |
5866 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 5867 | |
c906108c SS |
5868 | Else, it returns a pointer to the condition string. (It does not |
5869 | attempt to evaluate the string against a particular block.) And, | |
5870 | it updates arg to point to the first character following the parsed | |
5871 | if clause in the arg string. */ | |
53a5351d | 5872 | |
c906108c | 5873 | static char * |
fba45db2 | 5874 | ep_parse_optional_if_clause (char **arg) |
c906108c | 5875 | { |
c5aa993b JM |
5876 | char *cond_string; |
5877 | ||
5878 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 5879 | return NULL; |
c5aa993b | 5880 | |
c906108c SS |
5881 | /* Skip the "if" keyword. */ |
5882 | (*arg) += 2; | |
c5aa993b | 5883 | |
c906108c SS |
5884 | /* Skip any extra leading whitespace, and record the start of the |
5885 | condition string. */ | |
5886 | ep_skip_leading_whitespace (arg); | |
5887 | cond_string = *arg; | |
c5aa993b | 5888 | |
c906108c SS |
5889 | /* Assume that the condition occupies the remainder of the arg string. */ |
5890 | (*arg) += strlen (cond_string); | |
c5aa993b | 5891 | |
c906108c SS |
5892 | return cond_string; |
5893 | } | |
c5aa993b | 5894 | |
c906108c SS |
5895 | /* This function attempts to parse an optional filename from the arg |
5896 | string. If one is not found, it returns NULL. | |
c5aa993b | 5897 | |
c906108c SS |
5898 | Else, it returns a pointer to the parsed filename. (This function |
5899 | makes no attempt to verify that a file of that name exists, or is | |
5900 | accessible.) And, it updates arg to point to the first character | |
5901 | following the parsed filename in the arg string. | |
c5aa993b | 5902 | |
c906108c SS |
5903 | Note that clients needing to preserve the returned filename for |
5904 | future access should copy it to their own buffers. */ | |
5905 | static char * | |
fba45db2 | 5906 | ep_parse_optional_filename (char **arg) |
c906108c | 5907 | { |
c5aa993b JM |
5908 | static char filename[1024]; |
5909 | char *arg_p = *arg; | |
5910 | int i; | |
5911 | char c; | |
5912 | ||
c906108c SS |
5913 | if ((*arg_p == '\0') || isspace (*arg_p)) |
5914 | return NULL; | |
c5aa993b JM |
5915 | |
5916 | for (i = 0;; i++) | |
c906108c SS |
5917 | { |
5918 | c = *arg_p; | |
5919 | if (isspace (c)) | |
c5aa993b | 5920 | c = '\0'; |
c906108c SS |
5921 | filename[i] = c; |
5922 | if (c == '\0') | |
c5aa993b | 5923 | break; |
c906108c SS |
5924 | arg_p++; |
5925 | } | |
5926 | *arg = arg_p; | |
c5aa993b | 5927 | |
c906108c SS |
5928 | return filename; |
5929 | } | |
c5aa993b | 5930 | |
c906108c SS |
5931 | /* Commands to deal with catching events, such as signals, exceptions, |
5932 | process start/exit, etc. */ | |
c5aa993b JM |
5933 | |
5934 | typedef enum | |
5935 | { | |
5936 | catch_fork, catch_vfork | |
5937 | } | |
5938 | catch_fork_kind; | |
5939 | ||
e514a9d6 | 5940 | #if defined(CHILD_INSERT_FORK_CATCHPOINT) || defined(CHILD_INSERT_VFORK_CATCHPOINT) |
a14ed312 KB |
5941 | static void catch_fork_command_1 (catch_fork_kind fork_kind, |
5942 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 5943 | |
c906108c | 5944 | static void |
fba45db2 KB |
5945 | catch_fork_command_1 (catch_fork_kind fork_kind, char *arg, int tempflag, |
5946 | int from_tty) | |
c906108c | 5947 | { |
c5aa993b JM |
5948 | char *cond_string = NULL; |
5949 | ||
c906108c | 5950 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 5951 | |
c906108c | 5952 | /* The allowed syntax is: |
c5aa993b JM |
5953 | catch [v]fork |
5954 | catch [v]fork if <cond> | |
5955 | ||
c906108c SS |
5956 | First, check if there's an if clause. */ |
5957 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 5958 | |
c906108c SS |
5959 | if ((*arg != '\0') && !isspace (*arg)) |
5960 | error ("Junk at end of arguments."); | |
c5aa993b | 5961 | |
c906108c SS |
5962 | /* If this target supports it, create a fork or vfork catchpoint |
5963 | and enable reporting of such events. */ | |
c5aa993b JM |
5964 | switch (fork_kind) |
5965 | { | |
5966 | case catch_fork: | |
c906108c SS |
5967 | create_fork_event_catchpoint (tempflag, cond_string); |
5968 | break; | |
c5aa993b | 5969 | case catch_vfork: |
c906108c SS |
5970 | create_vfork_event_catchpoint (tempflag, cond_string); |
5971 | break; | |
c5aa993b | 5972 | default: |
c906108c SS |
5973 | error ("unsupported or unknown fork kind; cannot catch it"); |
5974 | break; | |
c5aa993b | 5975 | } |
c906108c | 5976 | } |
e514a9d6 | 5977 | #endif |
c906108c | 5978 | |
e514a9d6 | 5979 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) |
c906108c | 5980 | static void |
fba45db2 | 5981 | catch_exec_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 5982 | { |
c5aa993b | 5983 | char *cond_string = NULL; |
c906108c SS |
5984 | |
5985 | ep_skip_leading_whitespace (&arg); | |
5986 | ||
5987 | /* The allowed syntax is: | |
c5aa993b JM |
5988 | catch exec |
5989 | catch exec if <cond> | |
c906108c SS |
5990 | |
5991 | First, check if there's an if clause. */ | |
5992 | cond_string = ep_parse_optional_if_clause (&arg); | |
5993 | ||
5994 | if ((*arg != '\0') && !isspace (*arg)) | |
5995 | error ("Junk at end of arguments."); | |
5996 | ||
5997 | /* If this target supports it, create an exec catchpoint | |
5998 | and enable reporting of such events. */ | |
5999 | create_exec_event_catchpoint (tempflag, cond_string); | |
6000 | } | |
e514a9d6 | 6001 | #endif |
c5aa993b | 6002 | |
c906108c SS |
6003 | #if defined(SOLIB_ADD) |
6004 | static void | |
fba45db2 | 6005 | catch_load_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6006 | { |
c5aa993b JM |
6007 | char *dll_pathname = NULL; |
6008 | char *cond_string = NULL; | |
6009 | ||
c906108c | 6010 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6011 | |
c906108c | 6012 | /* The allowed syntax is: |
c5aa993b JM |
6013 | catch load |
6014 | catch load if <cond> | |
6015 | catch load <filename> | |
6016 | catch load <filename> if <cond> | |
6017 | ||
c906108c SS |
6018 | The user is not allowed to specify the <filename> after an |
6019 | if clause. | |
c5aa993b | 6020 | |
c906108c | 6021 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6022 | |
c906108c SS |
6023 | First, check if there's an if clause. If so, then there |
6024 | cannot be a filename. */ | |
6025 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6026 | |
c906108c SS |
6027 | /* If there was an if clause, then there cannot be a filename. |
6028 | Else, there might be a filename and an if clause. */ | |
6029 | if (cond_string == NULL) | |
6030 | { | |
6031 | dll_pathname = ep_parse_optional_filename (&arg); | |
6032 | ep_skip_leading_whitespace (&arg); | |
6033 | cond_string = ep_parse_optional_if_clause (&arg); | |
6034 | } | |
c5aa993b | 6035 | |
c906108c SS |
6036 | if ((*arg != '\0') && !isspace (*arg)) |
6037 | error ("Junk at end of arguments."); | |
c5aa993b | 6038 | |
c906108c SS |
6039 | /* Create a load breakpoint that only triggers when a load of |
6040 | the specified dll (or any dll, if no pathname was specified) | |
6041 | occurs. */ | |
53a5351d JM |
6042 | SOLIB_CREATE_CATCH_LOAD_HOOK (inferior_pid, tempflag, |
6043 | dll_pathname, cond_string); | |
c906108c | 6044 | } |
c5aa993b | 6045 | |
c906108c | 6046 | static void |
fba45db2 | 6047 | catch_unload_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6048 | { |
c5aa993b JM |
6049 | char *dll_pathname = NULL; |
6050 | char *cond_string = NULL; | |
6051 | ||
c906108c | 6052 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6053 | |
c906108c | 6054 | /* The allowed syntax is: |
c5aa993b JM |
6055 | catch unload |
6056 | catch unload if <cond> | |
6057 | catch unload <filename> | |
6058 | catch unload <filename> if <cond> | |
6059 | ||
c906108c SS |
6060 | The user is not allowed to specify the <filename> after an |
6061 | if clause. | |
c5aa993b | 6062 | |
c906108c | 6063 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6064 | |
c906108c SS |
6065 | First, check if there's an if clause. If so, then there |
6066 | cannot be a filename. */ | |
6067 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6068 | |
c906108c SS |
6069 | /* If there was an if clause, then there cannot be a filename. |
6070 | Else, there might be a filename and an if clause. */ | |
6071 | if (cond_string == NULL) | |
6072 | { | |
6073 | dll_pathname = ep_parse_optional_filename (&arg); | |
6074 | ep_skip_leading_whitespace (&arg); | |
6075 | cond_string = ep_parse_optional_if_clause (&arg); | |
6076 | } | |
c5aa993b | 6077 | |
c906108c SS |
6078 | if ((*arg != '\0') && !isspace (*arg)) |
6079 | error ("Junk at end of arguments."); | |
c5aa993b | 6080 | |
c906108c SS |
6081 | /* Create an unload breakpoint that only triggers when an unload of |
6082 | the specified dll (or any dll, if no pathname was specified) | |
6083 | occurs. */ | |
53a5351d JM |
6084 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (inferior_pid, tempflag, |
6085 | dll_pathname, cond_string); | |
c906108c SS |
6086 | } |
6087 | #endif /* SOLIB_ADD */ | |
6088 | ||
6089 | /* Commands to deal with catching exceptions. */ | |
6090 | ||
6091 | /* Set a breakpoint at the specified callback routine for an | |
c5aa993b | 6092 | exception event callback */ |
c906108c SS |
6093 | |
6094 | static void | |
fba45db2 KB |
6095 | create_exception_catchpoint (int tempflag, char *cond_string, |
6096 | enum exception_event_kind ex_event, | |
6097 | struct symtab_and_line *sal) | |
c906108c | 6098 | { |
c5aa993b | 6099 | struct breakpoint *b; |
c5aa993b | 6100 | int thread = -1; /* All threads. */ |
c906108c | 6101 | |
c5aa993b | 6102 | if (!sal) /* no exception support? */ |
c906108c SS |
6103 | return; |
6104 | ||
6105 | b = set_raw_breakpoint (*sal); | |
6106 | set_breakpoint_count (breakpoint_count + 1); | |
6107 | b->number = breakpoint_count; | |
6108 | b->cond = NULL; | |
53a5351d JM |
6109 | b->cond_string = (cond_string == NULL) ? |
6110 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
6111 | b->thread = thread; |
6112 | b->addr_string = NULL; | |
6113 | b->enable = enabled; | |
6114 | b->disposition = tempflag ? del : donttouch; | |
6115 | switch (ex_event) | |
6116 | { | |
c5aa993b JM |
6117 | case EX_EVENT_THROW: |
6118 | b->type = bp_catch_throw; | |
6119 | break; | |
6120 | case EX_EVENT_CATCH: | |
6121 | b->type = bp_catch_catch; | |
6122 | break; | |
6123 | default: /* error condition */ | |
6124 | b->type = bp_none; | |
6125 | b->enable = disabled; | |
6126 | error ("Internal error -- invalid catchpoint kind"); | |
c906108c SS |
6127 | } |
6128 | mention (b); | |
6129 | } | |
6130 | ||
c5aa993b | 6131 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6132 | |
6133 | static void | |
fba45db2 KB |
6134 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6135 | int tempflag, int from_tty) | |
c906108c | 6136 | { |
c5aa993b JM |
6137 | char *cond_string = NULL; |
6138 | struct symtab_and_line *sal = NULL; | |
6139 | ||
c906108c | 6140 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6141 | |
c906108c SS |
6142 | cond_string = ep_parse_optional_if_clause (&arg); |
6143 | ||
6144 | if ((*arg != '\0') && !isspace (*arg)) | |
6145 | error ("Junk at end of arguments."); | |
6146 | ||
6147 | if ((ex_event != EX_EVENT_THROW) && | |
6148 | (ex_event != EX_EVENT_CATCH)) | |
6149 | error ("Unsupported or unknown exception event; cannot catch it"); | |
6150 | ||
6151 | /* See if we can find a callback routine */ | |
6152 | sal = target_enable_exception_callback (ex_event, 1); | |
6153 | ||
c5aa993b | 6154 | if (sal) |
c906108c SS |
6155 | { |
6156 | /* We have callbacks from the runtime system for exceptions. | |
c5aa993b | 6157 | Set a breakpoint on the sal found, if no errors */ |
c906108c | 6158 | if (sal != (struct symtab_and_line *) -1) |
c5aa993b | 6159 | create_exception_catchpoint (tempflag, cond_string, ex_event, sal); |
c906108c | 6160 | else |
53a5351d | 6161 | return; /* something went wrong with setting up callbacks */ |
c906108c | 6162 | } |
c5aa993b | 6163 | else |
c906108c SS |
6164 | { |
6165 | /* No callbacks from runtime system for exceptions. | |
6166 | Try GNU C++ exception breakpoints using labels in debug info. */ | |
6167 | if (ex_event == EX_EVENT_CATCH) | |
c5aa993b JM |
6168 | { |
6169 | handle_gnu_4_16_catch_command (arg, tempflag, from_tty); | |
6170 | } | |
c906108c | 6171 | else if (ex_event == EX_EVENT_THROW) |
c5aa993b JM |
6172 | { |
6173 | /* Set a breakpoint on __raise_exception () */ | |
6174 | ||
53a5351d JM |
6175 | warning ("Unsupported with this platform/compiler combination."); |
6176 | warning ("Perhaps you can achieve the effect you want by setting"); | |
6177 | warning ("a breakpoint on __raise_exception()."); | |
c5aa993b | 6178 | } |
c906108c SS |
6179 | } |
6180 | } | |
6181 | ||
6182 | /* Cover routine to allow wrapping target_enable_exception_catchpoints | |
6183 | inside a catch_errors */ | |
6184 | ||
6185 | static int | |
fba45db2 | 6186 | cover_target_enable_exception_callback (PTR arg) |
c906108c SS |
6187 | { |
6188 | args_for_catchpoint_enable *args = arg; | |
6189 | struct symtab_and_line *sal; | |
6190 | sal = target_enable_exception_callback (args->kind, args->enable); | |
6191 | if (sal == NULL) | |
6192 | return 0; | |
6193 | else if (sal == (struct symtab_and_line *) -1) | |
6194 | return -1; | |
6195 | else | |
c5aa993b | 6196 | return 1; /*is valid */ |
c906108c SS |
6197 | } |
6198 | ||
6199 | ||
6200 | ||
6201 | /* This is the original v.4.16 and earlier version of the | |
6202 | catch_command_1() function. Now that other flavours of "catch" | |
6203 | have been introduced, and since exception handling can be handled | |
6204 | in other ways (through target ops) also, this is used only for the | |
6205 | GNU C++ exception handling system. | |
6206 | Note: Only the "catch" flavour of GDB 4.16 is handled here. The | |
6207 | "catch NAME" is now no longer allowed in catch_command_1(). Also, | |
6208 | there was no code in GDB 4.16 for "catch throw". | |
c5aa993b | 6209 | |
c906108c SS |
6210 | Called from catch_exception_command_1 () */ |
6211 | ||
6212 | ||
6213 | static void | |
fba45db2 | 6214 | handle_gnu_4_16_catch_command (char *arg, int tempflag, int from_tty) |
c906108c SS |
6215 | { |
6216 | /* First, translate ARG into something we can deal with in terms | |
6217 | of breakpoints. */ | |
6218 | ||
6219 | struct symtabs_and_lines sals; | |
6220 | struct symtab_and_line sal; | |
6221 | register struct expression *cond = 0; | |
6222 | register struct breakpoint *b; | |
6223 | char *save_arg; | |
6224 | int i; | |
6225 | ||
c5aa993b | 6226 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
6227 | |
6228 | /* If no arg given, or if first arg is 'if ', all active catch clauses | |
6229 | are breakpointed. */ | |
6230 | ||
c5aa993b | 6231 | if (!arg || (arg[0] == 'i' && arg[1] == 'f' |
c906108c SS |
6232 | && (arg[2] == ' ' || arg[2] == '\t'))) |
6233 | { | |
6234 | /* Grab all active catch clauses. */ | |
6235 | sals = get_catch_sals (0); | |
6236 | } | |
6237 | else | |
6238 | { | |
6239 | /* Grab selected catch clauses. */ | |
6240 | error ("catch NAME not implemented"); | |
6241 | ||
6242 | #if 0 | |
6243 | /* Not sure why this code has been disabled. I'm leaving | |
6244 | it disabled. We can never come here now anyway | |
6245 | since we don't allow the "catch NAME" syntax. | |
c5aa993b | 6246 | pai/1997-07-11 */ |
c906108c SS |
6247 | |
6248 | /* This isn't used; I don't know what it was for. */ | |
6249 | sals = map_catch_names (arg, catch_breakpoint); | |
6250 | #endif | |
6251 | } | |
6252 | ||
c5aa993b | 6253 | if (!sals.nelts) |
c906108c SS |
6254 | return; |
6255 | ||
6256 | save_arg = arg; | |
6257 | for (i = 0; i < sals.nelts; i++) | |
6258 | { | |
6259 | resolve_sal_pc (&sals.sals[i]); | |
c5aa993b | 6260 | |
c906108c SS |
6261 | while (arg && *arg) |
6262 | { | |
6263 | if (arg[0] == 'i' && arg[1] == 'f' | |
6264 | && (arg[2] == ' ' || arg[2] == '\t')) | |
c5aa993b | 6265 | cond = parse_exp_1 ((arg += 2, &arg), |
c906108c SS |
6266 | block_for_pc (sals.sals[i].pc), 0); |
6267 | else | |
6268 | error ("Junk at end of arguments."); | |
6269 | } | |
6270 | arg = save_arg; | |
6271 | } | |
6272 | ||
6273 | for (i = 0; i < sals.nelts; i++) | |
6274 | { | |
6275 | sal = sals.sals[i]; | |
6276 | ||
6277 | if (from_tty) | |
6278 | describe_other_breakpoints (sal.pc, sal.section); | |
6279 | ||
6280 | b = set_raw_breakpoint (sal); | |
6281 | set_breakpoint_count (breakpoint_count + 1); | |
6282 | b->number = breakpoint_count; | |
53a5351d JM |
6283 | |
6284 | /* Important -- this is an ordinary breakpoint. For platforms | |
6285 | with callback support for exceptions, | |
6286 | create_exception_catchpoint() will create special bp types | |
6287 | (bp_catch_catch and bp_catch_throw), and there is code in | |
6288 | insert_breakpoints() and elsewhere that depends on that. */ | |
6289 | b->type = bp_breakpoint; | |
c906108c SS |
6290 | |
6291 | b->cond = cond; | |
6292 | b->enable = enabled; | |
6293 | b->disposition = tempflag ? del : donttouch; | |
6294 | ||
6295 | mention (b); | |
6296 | } | |
6297 | ||
6298 | if (sals.nelts > 1) | |
6299 | { | |
53a5351d JM |
6300 | warning ("Multiple breakpoints were set."); |
6301 | warning ("Use the \"delete\" command to delete unwanted breakpoints."); | |
c906108c | 6302 | } |
b8c9b27d | 6303 | xfree (sals.sals); |
c906108c SS |
6304 | } |
6305 | ||
6306 | #if 0 | |
6307 | /* This creates a temporary internal breakpoint | |
6308 | just to placate infrun */ | |
6309 | static struct breakpoint * | |
fba45db2 | 6310 | create_temp_exception_breakpoint (CORE_ADDR pc) |
c906108c SS |
6311 | { |
6312 | struct symtab_and_line sal; | |
6313 | struct breakpoint *b; | |
6314 | ||
c5aa993b | 6315 | INIT_SAL (&sal); |
c906108c SS |
6316 | sal.pc = pc; |
6317 | sal.symtab = NULL; | |
6318 | sal.line = 0; | |
6319 | ||
6320 | b = set_raw_breakpoint (sal); | |
6321 | if (!b) | |
6322 | error ("Internal error -- couldn't set temp exception breakpoint"); | |
6323 | ||
6324 | b->type = bp_breakpoint; | |
6325 | b->disposition = del; | |
6326 | b->enable = enabled; | |
6327 | b->silent = 1; | |
6328 | b->number = internal_breakpoint_number--; | |
6329 | return b; | |
6330 | } | |
6331 | #endif | |
6332 | ||
6333 | static void | |
fba45db2 | 6334 | catch_command_1 (char *arg, int tempflag, int from_tty) |
c906108c | 6335 | { |
c5aa993b | 6336 | |
c906108c SS |
6337 | /* The first argument may be an event name, such as "start" or "load". |
6338 | If so, then handle it as such. If it doesn't match an event name, | |
6339 | then attempt to interpret it as an exception name. (This latter is | |
6340 | the v4.16-and-earlier GDB meaning of the "catch" command.) | |
c5aa993b | 6341 | |
c906108c | 6342 | First, try to find the bounds of what might be an event name. */ |
c5aa993b JM |
6343 | char *arg1_start = arg; |
6344 | char *arg1_end; | |
6345 | int arg1_length; | |
6346 | ||
c906108c SS |
6347 | if (arg1_start == NULL) |
6348 | { | |
c5aa993b | 6349 | /* Old behaviour was to use pre-v-4.16 syntax */ |
c906108c SS |
6350 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
6351 | /* return; */ | |
c5aa993b | 6352 | /* Now, this is not allowed */ |
c906108c SS |
6353 | error ("Catch requires an event name."); |
6354 | ||
6355 | } | |
6356 | arg1_end = ep_find_event_name_end (arg1_start); | |
6357 | if (arg1_end == NULL) | |
6358 | error ("catch requires an event"); | |
6359 | arg1_length = arg1_end + 1 - arg1_start; | |
c5aa993b | 6360 | |
c906108c SS |
6361 | /* Try to match what we found against known event names. */ |
6362 | if (strncmp (arg1_start, "signal", arg1_length) == 0) | |
6363 | { | |
6364 | error ("Catch of signal not yet implemented"); | |
6365 | } | |
6366 | else if (strncmp (arg1_start, "catch", arg1_length) == 0) | |
6367 | { | |
53a5351d JM |
6368 | catch_exception_command_1 (EX_EVENT_CATCH, arg1_end + 1, |
6369 | tempflag, from_tty); | |
c906108c SS |
6370 | } |
6371 | else if (strncmp (arg1_start, "throw", arg1_length) == 0) | |
6372 | { | |
53a5351d JM |
6373 | catch_exception_command_1 (EX_EVENT_THROW, arg1_end + 1, |
6374 | tempflag, from_tty); | |
c906108c SS |
6375 | } |
6376 | else if (strncmp (arg1_start, "thread_start", arg1_length) == 0) | |
6377 | { | |
6378 | error ("Catch of thread_start not yet implemented"); | |
6379 | } | |
6380 | else if (strncmp (arg1_start, "thread_exit", arg1_length) == 0) | |
6381 | { | |
6382 | error ("Catch of thread_exit not yet implemented"); | |
6383 | } | |
6384 | else if (strncmp (arg1_start, "thread_join", arg1_length) == 0) | |
6385 | { | |
6386 | error ("Catch of thread_join not yet implemented"); | |
6387 | } | |
6388 | else if (strncmp (arg1_start, "start", arg1_length) == 0) | |
6389 | { | |
6390 | error ("Catch of start not yet implemented"); | |
6391 | } | |
6392 | else if (strncmp (arg1_start, "exit", arg1_length) == 0) | |
6393 | { | |
6394 | error ("Catch of exit not yet implemented"); | |
6395 | } | |
6396 | else if (strncmp (arg1_start, "fork", arg1_length) == 0) | |
6397 | { | |
6398 | #if defined(CHILD_INSERT_FORK_CATCHPOINT) | |
c5aa993b | 6399 | catch_fork_command_1 (catch_fork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6400 | #else |
6401 | error ("Catch of fork not yet implemented"); | |
6402 | #endif | |
6403 | } | |
6404 | else if (strncmp (arg1_start, "vfork", arg1_length) == 0) | |
6405 | { | |
6406 | #if defined(CHILD_INSERT_VFORK_CATCHPOINT) | |
c5aa993b | 6407 | catch_fork_command_1 (catch_vfork, arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6408 | #else |
6409 | error ("Catch of vfork not yet implemented"); | |
6410 | #endif | |
6411 | } | |
6412 | else if (strncmp (arg1_start, "exec", arg1_length) == 0) | |
6413 | { | |
6414 | #if defined(CHILD_INSERT_EXEC_CATCHPOINT) | |
c5aa993b | 6415 | catch_exec_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6416 | #else |
6417 | error ("Catch of exec not yet implemented"); | |
6418 | #endif | |
6419 | } | |
6420 | else if (strncmp (arg1_start, "load", arg1_length) == 0) | |
6421 | { | |
6422 | #if defined(SOLIB_ADD) | |
c5aa993b | 6423 | catch_load_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6424 | #else |
6425 | error ("Catch of load not implemented"); | |
6426 | #endif | |
6427 | } | |
6428 | else if (strncmp (arg1_start, "unload", arg1_length) == 0) | |
6429 | { | |
6430 | #if defined(SOLIB_ADD) | |
c5aa993b | 6431 | catch_unload_command_1 (arg1_end + 1, tempflag, from_tty); |
c906108c SS |
6432 | #else |
6433 | error ("Catch of load not implemented"); | |
6434 | #endif | |
6435 | } | |
6436 | else if (strncmp (arg1_start, "stop", arg1_length) == 0) | |
6437 | { | |
6438 | error ("Catch of stop not yet implemented"); | |
6439 | } | |
c5aa993b | 6440 | |
c906108c SS |
6441 | /* This doesn't appear to be an event name */ |
6442 | ||
6443 | else | |
6444 | { | |
6445 | /* Pre-v.4.16 behaviour was to treat the argument | |
c5aa993b | 6446 | as the name of an exception */ |
c906108c | 6447 | /* catch_throw_command_1 (arg1_start, tempflag, from_tty); */ |
c5aa993b | 6448 | /* Now this is not allowed */ |
c906108c SS |
6449 | error ("Unknown event kind specified for catch"); |
6450 | ||
6451 | } | |
6452 | } | |
6453 | ||
6454 | /* Used by the gui, could be made a worker for other things. */ | |
6455 | ||
6456 | struct breakpoint * | |
fba45db2 | 6457 | set_breakpoint_sal (struct symtab_and_line sal) |
c906108c SS |
6458 | { |
6459 | struct breakpoint *b; | |
6460 | b = set_raw_breakpoint (sal); | |
6461 | set_breakpoint_count (breakpoint_count + 1); | |
6462 | b->number = breakpoint_count; | |
6463 | b->type = bp_breakpoint; | |
6464 | b->cond = 0; | |
6465 | b->thread = -1; | |
6466 | return b; | |
6467 | } | |
6468 | ||
6469 | #if 0 | |
6470 | /* These aren't used; I don't know what they were for. */ | |
6471 | /* Disable breakpoints on all catch clauses described in ARGS. */ | |
6472 | static void | |
fba45db2 | 6473 | disable_catch (char *args) |
c906108c SS |
6474 | { |
6475 | /* Map the disable command to catch clauses described in ARGS. */ | |
6476 | } | |
6477 | ||
6478 | /* Enable breakpoints on all catch clauses described in ARGS. */ | |
6479 | static void | |
fba45db2 | 6480 | enable_catch (char *args) |
c906108c SS |
6481 | { |
6482 | /* Map the disable command to catch clauses described in ARGS. */ | |
6483 | } | |
6484 | ||
6485 | /* Delete breakpoints on all catch clauses in the active scope. */ | |
6486 | static void | |
fba45db2 | 6487 | delete_catch (char *args) |
c906108c SS |
6488 | { |
6489 | /* Map the delete command to catch clauses described in ARGS. */ | |
6490 | } | |
6491 | #endif /* 0 */ | |
6492 | ||
6493 | static void | |
fba45db2 | 6494 | catch_command (char *arg, int from_tty) |
c906108c SS |
6495 | { |
6496 | catch_command_1 (arg, 0, from_tty); | |
6497 | } | |
6498 | \f | |
6499 | ||
6500 | static void | |
fba45db2 | 6501 | tcatch_command (char *arg, int from_tty) |
c906108c SS |
6502 | { |
6503 | catch_command_1 (arg, 1, from_tty); | |
6504 | } | |
6505 | ||
6506 | ||
6507 | static void | |
fba45db2 | 6508 | clear_command (char *arg, int from_tty) |
c906108c SS |
6509 | { |
6510 | register struct breakpoint *b, *b1; | |
6511 | int default_match; | |
6512 | struct symtabs_and_lines sals; | |
6513 | struct symtab_and_line sal; | |
6514 | register struct breakpoint *found; | |
6515 | int i; | |
6516 | ||
6517 | if (arg) | |
6518 | { | |
6519 | sals = decode_line_spec (arg, 1); | |
6520 | default_match = 0; | |
6521 | } | |
6522 | else | |
6523 | { | |
c5aa993b | 6524 | sals.sals = (struct symtab_and_line *) |
c906108c | 6525 | xmalloc (sizeof (struct symtab_and_line)); |
c5aa993b | 6526 | INIT_SAL (&sal); /* initialize to zeroes */ |
c906108c SS |
6527 | sal.line = default_breakpoint_line; |
6528 | sal.symtab = default_breakpoint_symtab; | |
6529 | sal.pc = default_breakpoint_address; | |
6530 | if (sal.symtab == 0) | |
6531 | error ("No source file specified."); | |
6532 | ||
6533 | sals.sals[0] = sal; | |
6534 | sals.nelts = 1; | |
6535 | ||
6536 | default_match = 1; | |
6537 | } | |
6538 | ||
6539 | /* For each line spec given, delete bps which correspond | |
6540 | to it. We do this in two loops: the first loop looks at | |
6541 | the initial bp(s) in the chain which should be deleted, | |
6542 | the second goes down the rest of the chain looking ahead | |
6543 | one so it can take those bps off the chain without messing | |
6544 | up the chain. */ | |
6545 | ||
6546 | ||
6547 | for (i = 0; i < sals.nelts; i++) | |
6548 | { | |
6549 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6550 | If line given (pc == 0), clear all bpts on specified line. |
6551 | If defaulting, clear all bpts on default line | |
c906108c | 6552 | or at default pc. |
c5aa993b JM |
6553 | |
6554 | defaulting sal.pc != 0 tests to do | |
6555 | ||
6556 | 0 1 pc | |
6557 | 1 1 pc _and_ line | |
6558 | 0 0 line | |
6559 | 1 0 <can't happen> */ | |
c906108c SS |
6560 | |
6561 | sal = sals.sals[i]; | |
6562 | found = (struct breakpoint *) 0; | |
6563 | ||
6564 | ||
6565 | while (breakpoint_chain | |
c5aa993b JM |
6566 | /* Why don't we check here that this is not |
6567 | a watchpoint, etc., as we do below? | |
6568 | I can't make it fail, but don't know | |
6569 | what's stopping the failure: a watchpoint | |
6570 | of the same address as "sal.pc" should | |
6571 | wind up being deleted. */ | |
6572 | ||
6573 | && (((sal.pc && (breakpoint_chain->address == sal.pc)) && | |
6574 | (overlay_debugging == 0 || | |
6575 | breakpoint_chain->section == sal.section)) | |
6576 | || ((default_match || (0 == sal.pc)) | |
6577 | && breakpoint_chain->source_file != NULL | |
6578 | && sal.symtab != NULL | |
6579 | && STREQ (breakpoint_chain->source_file, sal.symtab->filename) | |
6580 | && breakpoint_chain->line_number == sal.line))) | |
c906108c SS |
6581 | |
6582 | { | |
6583 | b1 = breakpoint_chain; | |
6584 | breakpoint_chain = b1->next; | |
6585 | b1->next = found; | |
6586 | found = b1; | |
6587 | } | |
6588 | ||
6589 | ALL_BREAKPOINTS (b) | |
6590 | ||
c5aa993b JM |
6591 | while (b->next |
6592 | && b->next->type != bp_none | |
6593 | && b->next->type != bp_watchpoint | |
6594 | && b->next->type != bp_hardware_watchpoint | |
6595 | && b->next->type != bp_read_watchpoint | |
6596 | && b->next->type != bp_access_watchpoint | |
6597 | && (((sal.pc && (b->next->address == sal.pc)) && | |
6598 | (overlay_debugging == 0 || | |
6599 | b->next->section == sal.section)) | |
6600 | || ((default_match || (0 == sal.pc)) | |
6601 | && b->next->source_file != NULL | |
6602 | && sal.symtab != NULL | |
6603 | && STREQ (b->next->source_file, sal.symtab->filename) | |
6604 | && b->next->line_number == sal.line))) | |
c906108c SS |
6605 | |
6606 | ||
c5aa993b JM |
6607 | { |
6608 | b1 = b->next; | |
6609 | b->next = b1->next; | |
6610 | b1->next = found; | |
6611 | found = b1; | |
6612 | } | |
c906108c SS |
6613 | |
6614 | if (found == 0) | |
6615 | { | |
6616 | if (arg) | |
6617 | error ("No breakpoint at %s.", arg); | |
6618 | else | |
6619 | error ("No breakpoint at this line."); | |
6620 | } | |
6621 | ||
c5aa993b JM |
6622 | if (found->next) |
6623 | from_tty = 1; /* Always report if deleted more than one */ | |
6624 | if (from_tty) | |
6625 | printf_unfiltered ("Deleted breakpoint%s ", found->next ? "s" : ""); | |
c906108c SS |
6626 | breakpoints_changed (); |
6627 | while (found) | |
6628 | { | |
c5aa993b JM |
6629 | if (from_tty) |
6630 | printf_unfiltered ("%d ", found->number); | |
c906108c SS |
6631 | b1 = found->next; |
6632 | delete_breakpoint (found); | |
6633 | found = b1; | |
6634 | } | |
c5aa993b JM |
6635 | if (from_tty) |
6636 | putchar_unfiltered ('\n'); | |
c906108c | 6637 | } |
b8c9b27d | 6638 | xfree (sals.sals); |
c906108c SS |
6639 | } |
6640 | \f | |
6641 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6642 | all breakpoints that are marked for deletion, whether hit or not. | |
6643 | This is called after any breakpoint is hit, or after errors. */ | |
6644 | ||
6645 | void | |
fba45db2 | 6646 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
6647 | { |
6648 | struct breakpoint *b, *temp; | |
6649 | ||
6650 | for (; bs; bs = bs->next) | |
c5aa993b | 6651 | if (bs->breakpoint_at && bs->breakpoint_at->disposition == del |
c906108c SS |
6652 | && bs->stop) |
6653 | delete_breakpoint (bs->breakpoint_at); | |
6654 | ||
6655 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
6656 | { |
6657 | if (b->disposition == del_at_next_stop) | |
6658 | delete_breakpoint (b); | |
6659 | } | |
c906108c SS |
6660 | } |
6661 | ||
53a5351d JM |
6662 | /* Delete a breakpoint and clean up all traces of it in the data |
6663 | structures. */ | |
c906108c SS |
6664 | |
6665 | void | |
fba45db2 | 6666 | delete_breakpoint (struct breakpoint *bpt) |
c906108c SS |
6667 | { |
6668 | register struct breakpoint *b; | |
6669 | register bpstat bs; | |
6670 | ||
6671 | if (bpt == NULL) | |
6672 | error ("Internal error (attempted to delete a NULL breakpoint)"); | |
6673 | ||
6674 | ||
6675 | /* Has this bp already been deleted? This can happen because multiple | |
6676 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
6677 | ||
6678 | One example of this happening is a watchpoint's scope bp. When the | |
6679 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
6680 | delete it. We also delete its scope bp. But the scope bp is marked | |
6681 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
6682 | checked for auto-deleting bp's, which are deleted. | |
6683 | ||
6684 | A real solution to this problem might involve reference counts in bp's, | |
6685 | and/or giving them pointers back to their referencing bpstat's, and | |
6686 | teaching delete_breakpoint to only free a bp's storage when no more | |
6687 | references were extent. A cheaper bandaid was chosen. */ | |
6688 | if (bpt->type == bp_none) | |
6689 | return; | |
6690 | ||
6691 | if (delete_breakpoint_hook) | |
6692 | delete_breakpoint_hook (bpt); | |
104c1213 | 6693 | breakpoint_delete_event (bpt->number); |
c906108c SS |
6694 | |
6695 | if (bpt->inserted) | |
6696 | remove_breakpoint (bpt, mark_uninserted); | |
c5aa993b | 6697 | |
c906108c SS |
6698 | if (breakpoint_chain == bpt) |
6699 | breakpoint_chain = bpt->next; | |
6700 | ||
6701 | /* If we have callback-style exception catchpoints, don't go through | |
6702 | the adjustments to the C++ runtime library etc. if the inferior | |
6703 | isn't actually running. target_enable_exception_callback for a | |
6704 | null target ops vector gives an undesirable error message, so we | |
6705 | check here and avoid it. Since currently (1997-09-17) only HP-UX aCC's | |
c5aa993b | 6706 | exceptions are supported in this way, it's OK for now. FIXME */ |
c906108c SS |
6707 | if (ep_is_exception_catchpoint (bpt) && target_has_execution) |
6708 | { | |
6709 | static char message1[] = "Error in deleting catchpoint %d:\n"; | |
6710 | static char message[sizeof (message1) + 30]; | |
6711 | args_for_catchpoint_enable args; | |
6712 | ||
53a5351d JM |
6713 | /* Format possible error msg */ |
6714 | sprintf (message, message1, bpt->number); | |
6715 | args.kind = bpt->type == bp_catch_catch ? | |
6716 | EX_EVENT_CATCH : EX_EVENT_THROW; | |
c906108c SS |
6717 | args.enable = 0; |
6718 | catch_errors (cover_target_enable_exception_callback, &args, | |
6719 | message, RETURN_MASK_ALL); | |
6720 | } | |
6721 | ||
6722 | ||
6723 | ALL_BREAKPOINTS (b) | |
6724 | if (b->next == bpt) | |
c5aa993b JM |
6725 | { |
6726 | b->next = bpt->next; | |
6727 | break; | |
6728 | } | |
c906108c SS |
6729 | |
6730 | /* Before turning off the visuals for the bp, check to see that | |
6731 | there are no other bps at the same address. */ | |
6732 | if (tui_version) | |
6733 | { | |
6734 | int clearIt; | |
6735 | ||
6736 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
6737 | { |
6738 | clearIt = (b->address != bpt->address); | |
6739 | if (!clearIt) | |
6740 | break; | |
6741 | } | |
c906108c SS |
6742 | |
6743 | if (clearIt) | |
c5aa993b JM |
6744 | { |
6745 | TUIDO (((TuiOpaqueFuncPtr) tui_vAllSetHasBreakAt, bpt, 0)); | |
6746 | TUIDO (((TuiOpaqueFuncPtr) tuiUpdateAllExecInfos)); | |
6747 | } | |
c906108c SS |
6748 | } |
6749 | ||
6750 | check_duplicates (bpt->address, bpt->section); | |
6751 | /* If this breakpoint was inserted, and there is another breakpoint | |
6752 | at the same address, we need to insert the other breakpoint. */ | |
6753 | if (bpt->inserted | |
6754 | && bpt->type != bp_hardware_watchpoint | |
6755 | && bpt->type != bp_read_watchpoint | |
6756 | && bpt->type != bp_access_watchpoint | |
6757 | && bpt->type != bp_catch_fork | |
6758 | && bpt->type != bp_catch_vfork | |
6759 | && bpt->type != bp_catch_exec) | |
6760 | { | |
6761 | ALL_BREAKPOINTS (b) | |
6762 | if (b->address == bpt->address | |
6763 | && b->section == bpt->section | |
6764 | && !b->duplicate | |
6765 | && b->enable != disabled | |
6766 | && b->enable != shlib_disabled | |
6767 | && b->enable != call_disabled) | |
c5aa993b JM |
6768 | { |
6769 | int val; | |
53a5351d | 6770 | |
c2c6d25f JM |
6771 | /* We should never reach this point if there is a permanent |
6772 | breakpoint at the same address as the one being deleted. | |
6773 | If there is a permanent breakpoint somewhere, it should | |
6774 | always be the only one inserted. */ | |
6775 | if (b->enable == permanent) | |
8e65ff28 AC |
6776 | internal_error (__FILE__, __LINE__, |
6777 | "another breakpoint was inserted on top of " | |
c2c6d25f JM |
6778 | "a permanent breakpoint"); |
6779 | ||
53a5351d JM |
6780 | if (b->type == bp_hardware_breakpoint) |
6781 | val = target_insert_hw_breakpoint (b->address, b->shadow_contents); | |
6782 | else | |
6783 | val = target_insert_breakpoint (b->address, b->shadow_contents); | |
6784 | ||
c5aa993b JM |
6785 | if (val != 0) |
6786 | { | |
6787 | target_terminal_ours_for_output (); | |
53a5351d | 6788 | warning ("Cannot insert breakpoint %d:", b->number); |
c5aa993b JM |
6789 | memory_error (val, b->address); /* which bombs us out */ |
6790 | } | |
6791 | else | |
6792 | b->inserted = 1; | |
6793 | } | |
c906108c SS |
6794 | } |
6795 | ||
6796 | free_command_lines (&bpt->commands); | |
6797 | if (bpt->cond) | |
b8c9b27d | 6798 | xfree (bpt->cond); |
c906108c | 6799 | if (bpt->cond_string != NULL) |
b8c9b27d | 6800 | xfree (bpt->cond_string); |
c906108c | 6801 | if (bpt->addr_string != NULL) |
b8c9b27d | 6802 | xfree (bpt->addr_string); |
c906108c | 6803 | if (bpt->exp != NULL) |
b8c9b27d | 6804 | xfree (bpt->exp); |
c906108c | 6805 | if (bpt->exp_string != NULL) |
b8c9b27d | 6806 | xfree (bpt->exp_string); |
c906108c SS |
6807 | if (bpt->val != NULL) |
6808 | value_free (bpt->val); | |
6809 | if (bpt->source_file != NULL) | |
b8c9b27d | 6810 | xfree (bpt->source_file); |
c906108c | 6811 | if (bpt->dll_pathname != NULL) |
b8c9b27d | 6812 | xfree (bpt->dll_pathname); |
c906108c | 6813 | if (bpt->triggered_dll_pathname != NULL) |
b8c9b27d | 6814 | xfree (bpt->triggered_dll_pathname); |
c906108c | 6815 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 6816 | xfree (bpt->exec_pathname); |
c906108c SS |
6817 | |
6818 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
6819 | /* FIXME, how can we find all bpstat's? | |
6820 | We just check stop_bpstat for now. */ | |
6821 | for (bs = stop_bpstat; bs; bs = bs->next) | |
6822 | if (bs->breakpoint_at == bpt) | |
6823 | { | |
6824 | bs->breakpoint_at = NULL; | |
6825 | ||
6826 | /* we'd call bpstat_clear_actions, but that free's stuff and due | |
6827 | to the multiple pointers pointing to one item with no | |
6828 | reference counts found anywhere through out the bpstat's (how | |
6829 | do you spell fragile?), we don't want to free things twice -- | |
6830 | better a memory leak than a corrupt malloc pool! */ | |
6831 | bs->commands = NULL; | |
6832 | bs->old_val = NULL; | |
6833 | } | |
6834 | /* On the chance that someone will soon try again to delete this same | |
6835 | bp, we mark it as deleted before freeing its storage. */ | |
6836 | bpt->type = bp_none; | |
6837 | ||
b8c9b27d | 6838 | xfree (bpt); |
c906108c SS |
6839 | } |
6840 | ||
4d6140d9 AC |
6841 | static void |
6842 | do_delete_breakpoint_cleanup (void *b) | |
6843 | { | |
6844 | delete_breakpoint (b); | |
6845 | } | |
6846 | ||
6847 | struct cleanup * | |
6848 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
6849 | { | |
6850 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
6851 | } | |
6852 | ||
6853 | struct cleanup * | |
6854 | make_exec_cleanup_delete_breakpoint (struct breakpoint *b) | |
6855 | { | |
6856 | return make_exec_cleanup (do_delete_breakpoint_cleanup, b); | |
6857 | } | |
6858 | ||
c906108c | 6859 | void |
fba45db2 | 6860 | delete_command (char *arg, int from_tty) |
c906108c SS |
6861 | { |
6862 | struct breakpoint *b, *temp; | |
6863 | ||
6864 | if (arg == 0) | |
6865 | { | |
6866 | int breaks_to_delete = 0; | |
6867 | ||
6868 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
6869 | Do not delete internal or call-dummy breakpoints, these |
6870 | have to be deleted with an explicit breakpoint number argument. */ | |
6871 | ALL_BREAKPOINTS (b) | |
6872 | { | |
6873 | if (b->type != bp_call_dummy && | |
6874 | b->type != bp_shlib_event && | |
c4093a6a | 6875 | b->type != bp_thread_event && |
c5aa993b JM |
6876 | b->number >= 0) |
6877 | breaks_to_delete = 1; | |
6878 | } | |
c906108c SS |
6879 | |
6880 | /* Ask user only if there are some breakpoints to delete. */ | |
6881 | if (!from_tty | |
6882 | || (breaks_to_delete && query ("Delete all breakpoints? "))) | |
6883 | { | |
c5aa993b JM |
6884 | ALL_BREAKPOINTS_SAFE (b, temp) |
6885 | { | |
6886 | if (b->type != bp_call_dummy && | |
6887 | b->type != bp_shlib_event && | |
c4093a6a | 6888 | b->type != bp_thread_event && |
c5aa993b JM |
6889 | b->number >= 0) |
6890 | delete_breakpoint (b); | |
6891 | } | |
c906108c SS |
6892 | } |
6893 | } | |
6894 | else | |
6895 | map_breakpoint_numbers (arg, delete_breakpoint); | |
6896 | } | |
6897 | ||
6898 | /* Reset a breakpoint given it's struct breakpoint * BINT. | |
6899 | The value we return ends up being the return value from catch_errors. | |
6900 | Unused in this case. */ | |
6901 | ||
6902 | static int | |
fba45db2 | 6903 | breakpoint_re_set_one (PTR bint) |
c906108c | 6904 | { |
53a5351d JM |
6905 | /* get past catch_errs */ |
6906 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
6907 | struct value *mark; |
6908 | int i; | |
6909 | struct symtabs_and_lines sals; | |
6910 | char *s; | |
6911 | enum enable save_enable; | |
6912 | ||
6913 | switch (b->type) | |
6914 | { | |
6915 | case bp_none: | |
53a5351d JM |
6916 | warning ("attempted to reset apparently deleted breakpoint #%d?", |
6917 | b->number); | |
c906108c SS |
6918 | return 0; |
6919 | case bp_breakpoint: | |
6920 | case bp_hardware_breakpoint: | |
6921 | case bp_catch_load: | |
6922 | case bp_catch_unload: | |
6923 | if (b->addr_string == NULL) | |
6924 | { | |
6925 | /* Anything without a string can't be re-set. */ | |
6926 | delete_breakpoint (b); | |
6927 | return 0; | |
6928 | } | |
6929 | /* In case we have a problem, disable this breakpoint. We'll restore | |
c5aa993b | 6930 | its status if we succeed. */ |
c906108c SS |
6931 | save_enable = b->enable; |
6932 | b->enable = disabled; | |
6933 | ||
6934 | set_language (b->language); | |
6935 | input_radix = b->input_radix; | |
6936 | s = b->addr_string; | |
c5aa993b | 6937 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL); |
c906108c SS |
6938 | for (i = 0; i < sals.nelts; i++) |
6939 | { | |
6940 | resolve_sal_pc (&sals.sals[i]); | |
6941 | ||
6942 | /* Reparse conditions, they might contain references to the | |
6943 | old symtab. */ | |
6944 | if (b->cond_string != NULL) | |
6945 | { | |
6946 | s = b->cond_string; | |
6947 | if (b->cond) | |
b8c9b27d | 6948 | xfree (b->cond); |
c906108c SS |
6949 | b->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), 0); |
6950 | } | |
6951 | ||
c5aa993b | 6952 | /* We need to re-set the breakpoint if the address changes... */ |
c906108c | 6953 | if (b->address != sals.sals[i].pc |
c5aa993b JM |
6954 | /* ...or new and old breakpoints both have source files, and |
6955 | the source file name or the line number changes... */ | |
c906108c SS |
6956 | || (b->source_file != NULL |
6957 | && sals.sals[i].symtab != NULL | |
6958 | && (!STREQ (b->source_file, sals.sals[i].symtab->filename) | |
6959 | || b->line_number != sals.sals[i].line) | |
c906108c | 6960 | ) |
c5aa993b JM |
6961 | /* ...or we switch between having a source file and not having |
6962 | one. */ | |
6963 | || ((b->source_file == NULL) != (sals.sals[i].symtab == NULL)) | |
6964 | ) | |
c906108c SS |
6965 | { |
6966 | if (b->source_file != NULL) | |
b8c9b27d | 6967 | xfree (b->source_file); |
c906108c SS |
6968 | if (sals.sals[i].symtab == NULL) |
6969 | b->source_file = NULL; | |
6970 | else | |
6971 | b->source_file = | |
6972 | savestring (sals.sals[i].symtab->filename, | |
6973 | strlen (sals.sals[i].symtab->filename)); | |
6974 | b->line_number = sals.sals[i].line; | |
6975 | b->address = sals.sals[i].pc; | |
6976 | ||
c5aa993b JM |
6977 | /* Used to check for duplicates here, but that can |
6978 | cause trouble, as it doesn't check for disable | |
6979 | breakpoints. */ | |
c906108c SS |
6980 | |
6981 | mention (b); | |
6982 | ||
6983 | /* Might be better to do this just once per breakpoint_re_set, | |
c5aa993b | 6984 | rather than once for every breakpoint. */ |
c906108c SS |
6985 | breakpoints_changed (); |
6986 | } | |
6987 | b->section = sals.sals[i].section; | |
6988 | b->enable = save_enable; /* Restore it, this worked. */ | |
6989 | ||
6990 | ||
c5aa993b | 6991 | /* Now that this is re-enabled, check_duplicates |
c906108c | 6992 | can be used. */ |
c5aa993b | 6993 | check_duplicates (b->address, b->section); |
c906108c SS |
6994 | |
6995 | } | |
b8c9b27d | 6996 | xfree (sals.sals); |
c906108c SS |
6997 | break; |
6998 | ||
6999 | case bp_watchpoint: | |
7000 | case bp_hardware_watchpoint: | |
7001 | case bp_read_watchpoint: | |
7002 | case bp_access_watchpoint: | |
7003 | innermost_block = NULL; | |
53a5351d JM |
7004 | /* The issue arises of what context to evaluate this in. The |
7005 | same one as when it was set, but what does that mean when | |
7006 | symbols have been re-read? We could save the filename and | |
7007 | functionname, but if the context is more local than that, the | |
7008 | best we could do would be something like how many levels deep | |
7009 | and which index at that particular level, but that's going to | |
7010 | be less stable than filenames or function names. */ | |
7011 | ||
c906108c SS |
7012 | /* So for now, just use a global context. */ |
7013 | if (b->exp) | |
b8c9b27d | 7014 | xfree (b->exp); |
c906108c SS |
7015 | b->exp = parse_expression (b->exp_string); |
7016 | b->exp_valid_block = innermost_block; | |
7017 | mark = value_mark (); | |
7018 | if (b->val) | |
7019 | value_free (b->val); | |
7020 | b->val = evaluate_expression (b->exp); | |
7021 | release_value (b->val); | |
7022 | if (VALUE_LAZY (b->val)) | |
7023 | value_fetch_lazy (b->val); | |
7024 | ||
7025 | if (b->cond_string != NULL) | |
7026 | { | |
7027 | s = b->cond_string; | |
7028 | if (b->cond) | |
b8c9b27d | 7029 | xfree (b->cond); |
c5aa993b | 7030 | b->cond = parse_exp_1 (&s, (struct block *) 0, 0); |
c906108c SS |
7031 | } |
7032 | if (b->enable == enabled) | |
7033 | mention (b); | |
7034 | value_free_to_mark (mark); | |
7035 | break; | |
c5aa993b JM |
7036 | case bp_catch_catch: |
7037 | case bp_catch_throw: | |
c906108c | 7038 | break; |
c5aa993b JM |
7039 | /* We needn't really do anything to reset these, since the mask |
7040 | that requests them is unaffected by e.g., new libraries being | |
7041 | loaded. */ | |
c906108c SS |
7042 | case bp_catch_fork: |
7043 | case bp_catch_vfork: | |
7044 | case bp_catch_exec: | |
7045 | break; | |
c5aa993b | 7046 | |
c906108c SS |
7047 | default: |
7048 | printf_filtered ("Deleting unknown breakpoint type %d\n", b->type); | |
7049 | /* fall through */ | |
c5aa993b JM |
7050 | /* Delete longjmp breakpoints, they will be reset later by |
7051 | breakpoint_re_set. */ | |
c906108c SS |
7052 | case bp_longjmp: |
7053 | case bp_longjmp_resume: | |
7054 | delete_breakpoint (b); | |
7055 | break; | |
7056 | ||
c5aa993b JM |
7057 | /* This breakpoint is special, it's set up when the inferior |
7058 | starts and we really don't want to touch it. */ | |
c906108c SS |
7059 | case bp_shlib_event: |
7060 | ||
c4093a6a JM |
7061 | /* Like bp_shlib_event, this breakpoint type is special. |
7062 | Once it is set up, we do not want to touch it. */ | |
7063 | case bp_thread_event: | |
7064 | ||
c5aa993b JM |
7065 | /* Keep temporary breakpoints, which can be encountered when we step |
7066 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7067 | Otherwise these should have been blown away via the cleanup chain | |
7068 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7069 | case bp_until: |
7070 | case bp_finish: | |
7071 | case bp_watchpoint_scope: | |
7072 | case bp_call_dummy: | |
7073 | case bp_step_resume: | |
7074 | break; | |
7075 | } | |
7076 | ||
7077 | return 0; | |
7078 | } | |
7079 | ||
7080 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7081 | void | |
fba45db2 | 7082 | breakpoint_re_set (void) |
c906108c SS |
7083 | { |
7084 | struct breakpoint *b, *temp; | |
7085 | enum language save_language; | |
7086 | int save_input_radix; | |
7087 | static char message1[] = "Error in re-setting breakpoint %d:\n"; | |
c5aa993b JM |
7088 | char message[sizeof (message1) + 30 /* slop */ ]; |
7089 | ||
c906108c SS |
7090 | save_language = current_language->la_language; |
7091 | save_input_radix = input_radix; | |
7092 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7093 | { |
53a5351d JM |
7094 | /* Format possible error msg */ |
7095 | sprintf (message, message1, b->number); | |
c5aa993b JM |
7096 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
7097 | } | |
c906108c SS |
7098 | set_language (save_language); |
7099 | input_radix = save_input_radix; | |
7100 | ||
7101 | #ifdef GET_LONGJMP_TARGET | |
7102 | create_longjmp_breakpoint ("longjmp"); | |
7103 | create_longjmp_breakpoint ("_longjmp"); | |
7104 | create_longjmp_breakpoint ("siglongjmp"); | |
7105 | create_longjmp_breakpoint ("_siglongjmp"); | |
7106 | create_longjmp_breakpoint (NULL); | |
7107 | #endif | |
7108 | ||
7109 | #if 0 | |
7110 | /* Took this out (temporarily at least), since it produces an extra | |
7111 | blank line at startup. This messes up the gdbtests. -PB */ | |
7112 | /* Blank line to finish off all those mention() messages we just printed. */ | |
7113 | printf_filtered ("\n"); | |
7114 | #endif | |
7115 | } | |
7116 | \f | |
7117 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. | |
7118 | If from_tty is nonzero, it prints a message to that effect, | |
7119 | which ends with a period (no newline). */ | |
7120 | ||
7121 | /* Reset the thread number of this breakpoint: | |
7122 | ||
7123 | - If the breakpoint is for all threads, leave it as-is. | |
7124 | - Else, reset it to the current thread for inferior_pid. */ | |
7125 | void | |
fba45db2 | 7126 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7127 | { |
7128 | if (b->thread != -1) | |
7129 | { | |
7130 | if (in_thread_list (inferior_pid)) | |
c5aa993b | 7131 | b->thread = pid_to_thread_id (inferior_pid); |
c906108c SS |
7132 | } |
7133 | } | |
7134 | ||
7135 | void | |
fba45db2 | 7136 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c SS |
7137 | { |
7138 | register struct breakpoint *b; | |
7139 | ||
7140 | if (count < 0) | |
7141 | count = 0; | |
7142 | ||
7143 | ALL_BREAKPOINTS (b) | |
7144 | if (b->number == bptnum) | |
c5aa993b JM |
7145 | { |
7146 | b->ignore_count = count; | |
7147 | if (!from_tty) | |
c906108c | 7148 | return; |
c5aa993b JM |
7149 | else if (count == 0) |
7150 | printf_filtered ("Will stop next time breakpoint %d is reached.", | |
7151 | bptnum); | |
7152 | else if (count == 1) | |
7153 | printf_filtered ("Will ignore next crossing of breakpoint %d.", | |
7154 | bptnum); | |
7155 | else | |
7156 | printf_filtered ("Will ignore next %d crossings of breakpoint %d.", | |
7157 | count, bptnum); | |
7158 | breakpoints_changed (); | |
7159 | return; | |
7160 | } | |
c906108c SS |
7161 | |
7162 | error ("No breakpoint number %d.", bptnum); | |
7163 | } | |
7164 | ||
7165 | /* Clear the ignore counts of all breakpoints. */ | |
7166 | void | |
fba45db2 | 7167 | breakpoint_clear_ignore_counts (void) |
c906108c SS |
7168 | { |
7169 | struct breakpoint *b; | |
7170 | ||
7171 | ALL_BREAKPOINTS (b) | |
7172 | b->ignore_count = 0; | |
7173 | } | |
7174 | ||
7175 | /* Command to set ignore-count of breakpoint N to COUNT. */ | |
7176 | ||
7177 | static void | |
fba45db2 | 7178 | ignore_command (char *args, int from_tty) |
c906108c SS |
7179 | { |
7180 | char *p = args; | |
7181 | register int num; | |
7182 | ||
7183 | if (p == 0) | |
7184 | error_no_arg ("a breakpoint number"); | |
c5aa993b | 7185 | |
c906108c | 7186 | num = get_number (&p); |
5c44784c JM |
7187 | if (num == 0) |
7188 | error ("bad breakpoint number: '%s'", args); | |
c906108c SS |
7189 | if (*p == 0) |
7190 | error ("Second argument (specified ignore-count) is missing."); | |
7191 | ||
7192 | set_ignore_count (num, | |
7193 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7194 | from_tty); | |
7195 | printf_filtered ("\n"); | |
7196 | breakpoints_changed (); | |
7197 | } | |
7198 | \f | |
7199 | /* Call FUNCTION on each of the breakpoints | |
7200 | whose numbers are given in ARGS. */ | |
7201 | ||
7202 | static void | |
831662b3 | 7203 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c SS |
7204 | { |
7205 | register char *p = args; | |
7206 | char *p1; | |
7207 | register int num; | |
5c44784c | 7208 | register struct breakpoint *b, *tmp; |
11cf8741 | 7209 | int match; |
c906108c SS |
7210 | |
7211 | if (p == 0) | |
7212 | error_no_arg ("one or more breakpoint numbers"); | |
7213 | ||
7214 | while (*p) | |
7215 | { | |
11cf8741 | 7216 | match = 0; |
c906108c | 7217 | p1 = p; |
c5aa993b | 7218 | |
5c44784c JM |
7219 | num = get_number_or_range (&p1); |
7220 | if (num == 0) | |
c5aa993b | 7221 | { |
5c44784c JM |
7222 | warning ("bad breakpoint number at or near '%s'", p); |
7223 | } | |
7224 | else | |
7225 | { | |
7226 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7227 | if (b->number == num) | |
7228 | { | |
7229 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7230 | match = 1; |
5c44784c JM |
7231 | function (b); |
7232 | if (related_breakpoint) | |
7233 | function (related_breakpoint); | |
11cf8741 | 7234 | break; |
5c44784c | 7235 | } |
11cf8741 JM |
7236 | if (match == 0) |
7237 | printf_unfiltered ("No breakpoint number %d.\n", num); | |
c5aa993b | 7238 | } |
c906108c SS |
7239 | p = p1; |
7240 | } | |
7241 | } | |
7242 | ||
7243 | void | |
fba45db2 | 7244 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7245 | { |
7246 | /* Never disable a watchpoint scope breakpoint; we want to | |
7247 | hit them when we leave scope so we can delete both the | |
7248 | watchpoint and its scope breakpoint at that time. */ | |
7249 | if (bpt->type == bp_watchpoint_scope) | |
7250 | return; | |
7251 | ||
c2c6d25f JM |
7252 | /* You can't disable permanent breakpoints. */ |
7253 | if (bpt->enable == permanent) | |
7254 | return; | |
7255 | ||
c906108c SS |
7256 | bpt->enable = disabled; |
7257 | ||
7258 | check_duplicates (bpt->address, bpt->section); | |
7259 | ||
7260 | if (modify_breakpoint_hook) | |
7261 | modify_breakpoint_hook (bpt); | |
104c1213 | 7262 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7263 | } |
7264 | ||
7265 | /* ARGSUSED */ | |
7266 | static void | |
fba45db2 | 7267 | disable_command (char *args, int from_tty) |
c906108c SS |
7268 | { |
7269 | register struct breakpoint *bpt; | |
7270 | if (args == 0) | |
7271 | ALL_BREAKPOINTS (bpt) | |
7272 | switch (bpt->type) | |
c5aa993b JM |
7273 | { |
7274 | case bp_none: | |
53a5351d JM |
7275 | warning ("attempted to disable apparently deleted breakpoint #%d?", |
7276 | bpt->number); | |
c5aa993b JM |
7277 | continue; |
7278 | case bp_breakpoint: | |
7279 | case bp_catch_load: | |
7280 | case bp_catch_unload: | |
7281 | case bp_catch_fork: | |
7282 | case bp_catch_vfork: | |
7283 | case bp_catch_exec: | |
7284 | case bp_catch_catch: | |
7285 | case bp_catch_throw: | |
7286 | case bp_hardware_breakpoint: | |
7287 | case bp_watchpoint: | |
7288 | case bp_hardware_watchpoint: | |
7289 | case bp_read_watchpoint: | |
7290 | case bp_access_watchpoint: | |
7291 | disable_breakpoint (bpt); | |
7292 | default: | |
7293 | continue; | |
7294 | } | |
c906108c SS |
7295 | else |
7296 | map_breakpoint_numbers (args, disable_breakpoint); | |
7297 | } | |
7298 | ||
7299 | static void | |
fba45db2 | 7300 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c SS |
7301 | { |
7302 | struct frame_info *save_selected_frame = NULL; | |
7303 | int save_selected_frame_level = -1; | |
7304 | int target_resources_ok, other_type_used; | |
7305 | struct value *mark; | |
7306 | ||
7307 | if (bpt->type == bp_hardware_breakpoint) | |
7308 | { | |
7309 | int i; | |
c5aa993b | 7310 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7311 | target_resources_ok = |
7312 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7313 | i + 1, 0); | |
c906108c | 7314 | if (target_resources_ok == 0) |
c5aa993b | 7315 | error ("No hardware breakpoint support in the target."); |
c906108c | 7316 | else if (target_resources_ok < 0) |
c5aa993b | 7317 | error ("Hardware breakpoints used exceeds limit."); |
c906108c SS |
7318 | } |
7319 | ||
c2c6d25f JM |
7320 | if (bpt->enable != permanent) |
7321 | bpt->enable = enabled; | |
c906108c SS |
7322 | bpt->disposition = disposition; |
7323 | check_duplicates (bpt->address, bpt->section); | |
7324 | breakpoints_changed (); | |
7325 | ||
53a5351d JM |
7326 | if (bpt->type == bp_watchpoint || |
7327 | bpt->type == bp_hardware_watchpoint || | |
7328 | bpt->type == bp_read_watchpoint || | |
7329 | bpt->type == bp_access_watchpoint) | |
c906108c SS |
7330 | { |
7331 | if (bpt->exp_valid_block != NULL) | |
7332 | { | |
7333 | struct frame_info *fr = | |
7334 | ||
c5aa993b JM |
7335 | /* Ensure that we have the current frame. Else, this |
7336 | next query may pessimistically be answered as, "No, | |
7337 | not within current scope". */ | |
7338 | get_current_frame (); | |
7339 | fr = find_frame_addr_in_frame_chain (bpt->watchpoint_frame); | |
c906108c SS |
7340 | if (fr == NULL) |
7341 | { | |
7342 | printf_filtered ("\ | |
7343 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
7344 | is valid is not currently in scope.\n", bpt->number); | |
7345 | bpt->enable = disabled; | |
7346 | return; | |
7347 | } | |
7348 | ||
7349 | save_selected_frame = selected_frame; | |
7350 | save_selected_frame_level = selected_frame_level; | |
7351 | select_frame (fr, -1); | |
7352 | } | |
7353 | ||
7354 | value_free (bpt->val); | |
7355 | mark = value_mark (); | |
7356 | bpt->val = evaluate_expression (bpt->exp); | |
7357 | release_value (bpt->val); | |
7358 | if (VALUE_LAZY (bpt->val)) | |
7359 | value_fetch_lazy (bpt->val); | |
7360 | ||
7361 | if (bpt->type == bp_hardware_watchpoint || | |
c5aa993b JM |
7362 | bpt->type == bp_read_watchpoint || |
7363 | bpt->type == bp_access_watchpoint) | |
7364 | { | |
7365 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); | |
7366 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
7367 | ||
7368 | /* Hack around 'unused var' error for some targets here */ | |
7369 | (void) mem_cnt, i; | |
7370 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
7371 | bpt->type, i + mem_cnt, other_type_used); | |
7372 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
7373 | bp_watchpoint in the following condition */ | |
7374 | if (target_resources_ok < 0) | |
7375 | { | |
7376 | printf_filtered ("\ | |
c906108c SS |
7377 | Cannot enable watchpoint %d because target watch resources\n\ |
7378 | have been allocated for other watchpoints.\n", bpt->number); | |
c5aa993b JM |
7379 | bpt->enable = disabled; |
7380 | value_free_to_mark (mark); | |
7381 | return; | |
7382 | } | |
7383 | } | |
c906108c SS |
7384 | |
7385 | if (save_selected_frame_level >= 0) | |
c6902688 | 7386 | select_frame (save_selected_frame, save_selected_frame_level); |
c906108c SS |
7387 | value_free_to_mark (mark); |
7388 | } | |
7389 | if (modify_breakpoint_hook) | |
7390 | modify_breakpoint_hook (bpt); | |
104c1213 | 7391 | breakpoint_modify_event (bpt->number); |
c906108c SS |
7392 | } |
7393 | ||
7394 | void | |
fba45db2 | 7395 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7396 | { |
7397 | do_enable_breakpoint (bpt, bpt->disposition); | |
7398 | } | |
7399 | ||
7400 | /* The enable command enables the specified breakpoints (or all defined | |
7401 | breakpoints) so they once again become (or continue to be) effective | |
7402 | in stopping the inferior. */ | |
7403 | ||
7404 | /* ARGSUSED */ | |
7405 | static void | |
fba45db2 | 7406 | enable_command (char *args, int from_tty) |
c906108c SS |
7407 | { |
7408 | register struct breakpoint *bpt; | |
7409 | if (args == 0) | |
7410 | ALL_BREAKPOINTS (bpt) | |
7411 | switch (bpt->type) | |
c5aa993b JM |
7412 | { |
7413 | case bp_none: | |
53a5351d JM |
7414 | warning ("attempted to enable apparently deleted breakpoint #%d?", |
7415 | bpt->number); | |
c5aa993b JM |
7416 | continue; |
7417 | case bp_breakpoint: | |
7418 | case bp_catch_load: | |
7419 | case bp_catch_unload: | |
7420 | case bp_catch_fork: | |
7421 | case bp_catch_vfork: | |
7422 | case bp_catch_exec: | |
7423 | case bp_catch_catch: | |
7424 | case bp_catch_throw: | |
7425 | case bp_hardware_breakpoint: | |
7426 | case bp_watchpoint: | |
7427 | case bp_hardware_watchpoint: | |
7428 | case bp_read_watchpoint: | |
7429 | case bp_access_watchpoint: | |
7430 | enable_breakpoint (bpt); | |
7431 | default: | |
7432 | continue; | |
7433 | } | |
c906108c SS |
7434 | else |
7435 | map_breakpoint_numbers (args, enable_breakpoint); | |
7436 | } | |
7437 | ||
7438 | static void | |
fba45db2 | 7439 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7440 | { |
7441 | do_enable_breakpoint (bpt, disable); | |
7442 | } | |
7443 | ||
7444 | /* ARGSUSED */ | |
7445 | static void | |
fba45db2 | 7446 | enable_once_command (char *args, int from_tty) |
c906108c SS |
7447 | { |
7448 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
7449 | } | |
7450 | ||
7451 | static void | |
fba45db2 | 7452 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7453 | { |
7454 | do_enable_breakpoint (bpt, del); | |
7455 | } | |
7456 | ||
7457 | /* ARGSUSED */ | |
7458 | static void | |
fba45db2 | 7459 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
7460 | { |
7461 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
7462 | } | |
7463 | \f | |
7464 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ | |
7465 | ||
7466 | struct symtabs_and_lines | |
fba45db2 | 7467 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
7468 | { |
7469 | struct symtabs_and_lines sals; | |
7470 | if (string == 0) | |
7471 | error ("Empty line specification."); | |
7472 | if (default_breakpoint_valid) | |
7473 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
7474 | default_breakpoint_symtab, |
7475 | default_breakpoint_line, | |
c5aa993b | 7476 | (char ***) NULL); |
c906108c SS |
7477 | else |
7478 | sals = decode_line_1 (&string, funfirstline, | |
c5aa993b | 7479 | (struct symtab *) NULL, 0, (char ***) NULL); |
c906108c SS |
7480 | if (*string) |
7481 | error ("Junk at end of line specification: %s", string); | |
7482 | return sals; | |
7483 | } | |
7484 | \f | |
7485 | void | |
fba45db2 | 7486 | _initialize_breakpoint (void) |
c906108c SS |
7487 | { |
7488 | struct cmd_list_element *c; | |
7489 | ||
7490 | breakpoint_chain = 0; | |
7491 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
7492 | before a breakpoint is set. */ | |
7493 | breakpoint_count = 0; | |
7494 | ||
7495 | add_com ("ignore", class_breakpoint, ignore_command, | |
7496 | "Set ignore-count of breakpoint number N to COUNT.\n\ | |
7497 | Usage is `ignore N COUNT'."); | |
7498 | if (xdb_commands) | |
c5aa993b | 7499 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c SS |
7500 | |
7501 | add_com ("commands", class_breakpoint, commands_command, | |
7502 | "Set commands to be executed when a breakpoint is hit.\n\ | |
7503 | Give breakpoint number as argument after \"commands\".\n\ | |
7504 | With no argument, the targeted breakpoint is the last one set.\n\ | |
7505 | The commands themselves follow starting on the next line.\n\ | |
7506 | Type a line containing \"end\" to indicate the end of them.\n\ | |
7507 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
7508 | then no output is printed when it is hit, except what the commands print."); | |
7509 | ||
7510 | add_com ("condition", class_breakpoint, condition_command, | |
7511 | "Specify breakpoint number N to break only if COND is true.\n\ | |
7512 | Usage is `condition N COND', where N is an integer and COND is an\n\ | |
7513 | expression to be evaluated whenever breakpoint N is reached. "); | |
7514 | ||
7515 | add_com ("tbreak", class_breakpoint, tbreak_command, | |
7516 | "Set a temporary breakpoint. Args like \"break\" command.\n\ | |
7517 | Like \"break\" except the breakpoint is only temporary,\n\ | |
7518 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
7519 | by using \"enable delete\" on the breakpoint number."); | |
c5aa993b JM |
7520 | add_com ("txbreak", class_breakpoint, tbreak_at_finish_command, |
7521 | "Set temporary breakpoint at procedure exit. Either there should\n\ | |
c906108c SS |
7522 | be no argument or the argument must be a depth.\n"); |
7523 | ||
7524 | add_com ("hbreak", class_breakpoint, hbreak_command, | |
7525 | "Set a hardware assisted breakpoint. Args like \"break\" command.\n\ | |
7526 | Like \"break\" except the breakpoint requires hardware support,\n\ | |
7527 | some target hardware may not have this support."); | |
7528 | ||
7529 | add_com ("thbreak", class_breakpoint, thbreak_command, | |
7530 | "Set a temporary hardware assisted breakpoint. Args like \"break\" command.\n\ | |
7531 | Like \"hbreak\" except the breakpoint is only temporary,\n\ | |
7532 | so it will be deleted when hit."); | |
7533 | ||
7534 | add_prefix_cmd ("enable", class_breakpoint, enable_command, | |
7535 | "Enable some breakpoints.\n\ | |
7536 | Give breakpoint numbers (separated by spaces) as arguments.\n\ | |
7537 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7538 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7539 | With a subcommand you can enable temporarily.", | |
7540 | &enablelist, "enable ", 1, &cmdlist); | |
7541 | if (xdb_commands) | |
c5aa993b JM |
7542 | add_com ("ab", class_breakpoint, enable_command, |
7543 | "Enable some breakpoints.\n\ | |
c906108c SS |
7544 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7545 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
7546 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7547 | With a subcommand you can enable temporarily."); | |
7548 | ||
7549 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
7550 | ||
7551 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, | |
c5aa993b | 7552 | "Enable some breakpoints.\n\ |
c906108c SS |
7553 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
7554 | This is used to cancel the effect of the \"disable\" command.\n\ | |
7555 | May be abbreviated to simply \"enable\".\n", | |
c5aa993b | 7556 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c SS |
7557 | |
7558 | add_cmd ("once", no_class, enable_once_command, | |
7559 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7560 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7561 | &enablebreaklist); | |
7562 | ||
7563 | add_cmd ("delete", no_class, enable_delete_command, | |
7564 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7565 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7566 | &enablebreaklist); | |
7567 | ||
7568 | add_cmd ("delete", no_class, enable_delete_command, | |
7569 | "Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
7570 | If a breakpoint is hit while enabled in this fashion, it is deleted.", | |
7571 | &enablelist); | |
7572 | ||
7573 | add_cmd ("once", no_class, enable_once_command, | |
7574 | "Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
7575 | If a breakpoint is hit while enabled in this fashion, it becomes disabled.", | |
7576 | &enablelist); | |
7577 | ||
7578 | add_prefix_cmd ("disable", class_breakpoint, disable_command, | |
c5aa993b | 7579 | "Disable some breakpoints.\n\ |
c906108c SS |
7580 | Arguments are breakpoint numbers with spaces in between.\n\ |
7581 | To disable all breakpoints, give no argument.\n\ | |
7582 | A disabled breakpoint is not forgotten, but has no effect until reenabled.", | |
7583 | &disablelist, "disable ", 1, &cmdlist); | |
7584 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
7585 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
7586 | if (xdb_commands) | |
c5aa993b JM |
7587 | add_com ("sb", class_breakpoint, disable_command, |
7588 | "Disable some breakpoints.\n\ | |
c906108c SS |
7589 | Arguments are breakpoint numbers with spaces in between.\n\ |
7590 | To disable all breakpoints, give no argument.\n\ | |
7591 | A disabled breakpoint is not forgotten, but has no effect until reenabled."); | |
7592 | ||
7593 | add_cmd ("breakpoints", class_alias, disable_command, | |
7594 | "Disable some breakpoints.\n\ | |
7595 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7596 | To disable all breakpoints, give no argument.\n\ | |
7597 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
7598 | This command may be abbreviated \"disable\".", | |
7599 | &disablelist); | |
7600 | ||
7601 | add_prefix_cmd ("delete", class_breakpoint, delete_command, | |
c5aa993b | 7602 | "Delete some breakpoints or auto-display expressions.\n\ |
c906108c SS |
7603 | Arguments are breakpoint numbers with spaces in between.\n\ |
7604 | To delete all breakpoints, give no argument.\n\ | |
7605 | \n\ | |
7606 | Also a prefix command for deletion of other GDB objects.\n\ | |
7607 | The \"unset\" command is also an alias for \"delete\".", | |
7608 | &deletelist, "delete ", 1, &cmdlist); | |
7609 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7610 | if (xdb_commands) | |
7611 | add_com ("db", class_breakpoint, delete_command, | |
c5aa993b | 7612 | "Delete some breakpoints.\n\ |
c906108c SS |
7613 | Arguments are breakpoint numbers with spaces in between.\n\ |
7614 | To delete all breakpoints, give no argument.\n"); | |
7615 | ||
7616 | add_cmd ("breakpoints", class_alias, delete_command, | |
7617 | "Delete some breakpoints or auto-display expressions.\n\ | |
7618 | Arguments are breakpoint numbers with spaces in between.\n\ | |
7619 | To delete all breakpoints, give no argument.\n\ | |
7620 | This command may be abbreviated \"delete\".", | |
7621 | &deletelist); | |
7622 | ||
7623 | add_com ("clear", class_breakpoint, clear_command, | |
7624 | concat ("Clear breakpoint at specified line or function.\n\ | |
7625 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
7626 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
7627 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
7628 | If an address is specified, breakpoints at that address are cleared.\n\n", | |
c5aa993b | 7629 | "With no argument, clears all breakpoints in the line that the selected frame\n\ |
c906108c SS |
7630 | is executing in.\n\ |
7631 | \n\ | |
7632 | See also the \"delete\" command which clears breakpoints by number.", NULL)); | |
7633 | ||
7634 | add_com ("break", class_breakpoint, break_command, | |
7635 | concat ("Set breakpoint at specified line or function.\n\ | |
7636 | Argument may be line number, function name, or \"*\" and an address.\n\ | |
7637 | If line number is specified, break at start of code for that line.\n\ | |
7638 | If function is specified, break at start of code for that function.\n\ | |
7639 | If an address is specified, break at that exact address.\n", | |
c5aa993b | 7640 | "With no arg, uses current execution address of selected stack frame.\n\ |
c906108c SS |
7641 | This is useful for breaking on return to a stack frame.\n\ |
7642 | \n\ | |
7643 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7644 | \n\ | |
7645 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
7646 | add_com_alias ("b", "break", class_run, 1); | |
7647 | add_com_alias ("br", "break", class_run, 1); | |
7648 | add_com_alias ("bre", "break", class_run, 1); | |
7649 | add_com_alias ("brea", "break", class_run, 1); | |
7650 | ||
c5aa993b JM |
7651 | add_com ("xbreak", class_breakpoint, break_at_finish_command, |
7652 | concat ("Set breakpoint at procedure exit. \n\ | |
c906108c SS |
7653 | Argument may be function name, or \"*\" and an address.\n\ |
7654 | If function is specified, break at end of code for that function.\n\ | |
7655 | If an address is specified, break at the end of the function that contains \n\ | |
7656 | that exact address.\n", | |
c5aa993b | 7657 | "With no arg, uses current execution address of selected stack frame.\n\ |
c906108c SS |
7658 | This is useful for breaking on return to a stack frame.\n\ |
7659 | \n\ | |
7660 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
7661 | \n\ | |
7662 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)); | |
7663 | add_com_alias ("xb", "xbreak", class_breakpoint, 1); | |
7664 | add_com_alias ("xbr", "xbreak", class_breakpoint, 1); | |
7665 | add_com_alias ("xbre", "xbreak", class_breakpoint, 1); | |
7666 | add_com_alias ("xbrea", "xbreak", class_breakpoint, 1); | |
7667 | ||
7668 | if (xdb_commands) | |
7669 | { | |
7670 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
7671 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
7672 | add_com ("bx", class_breakpoint, break_at_finish_at_depth_command, | |
c5aa993b | 7673 | "Set breakpoint at procedure exit. Either there should\n\ |
c906108c SS |
7674 | be no argument or the argument must be a depth.\n"); |
7675 | } | |
7676 | ||
7677 | if (dbx_commands) | |
7678 | { | |
c5aa993b JM |
7679 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, |
7680 | "Break in function/address or break at a line in the current file.", | |
7681 | &stoplist, "stop ", 1, &cmdlist); | |
7682 | add_cmd ("in", class_breakpoint, stopin_command, | |
7683 | "Break in function or address.\n", &stoplist); | |
7684 | add_cmd ("at", class_breakpoint, stopat_command, | |
7685 | "Break at a line in the current file.\n", &stoplist); | |
7686 | add_com ("status", class_info, breakpoints_info, | |
7687 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7688 | The \"Type\" column indicates one of:\n\ |
7689 | \tbreakpoint - normal breakpoint\n\ | |
7690 | \twatchpoint - watchpoint\n\ | |
7691 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7692 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7693 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7694 | address and file/line number respectively.\n\n", | |
c5aa993b | 7695 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7696 | are set to the address of the last breakpoint listed.\n\n\ |
7697 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7698 | breakpoint set.", NULL)); | |
7699 | } | |
7700 | ||
7701 | add_info ("breakpoints", breakpoints_info, | |
7702 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
7703 | The \"Type\" column indicates one of:\n\ | |
7704 | \tbreakpoint - normal breakpoint\n\ | |
7705 | \twatchpoint - watchpoint\n\ | |
7706 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7707 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7708 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7709 | address and file/line number respectively.\n\n", | |
c5aa993b | 7710 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7711 | are set to the address of the last breakpoint listed.\n\n\ |
7712 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7713 | breakpoint set.", NULL)); | |
7714 | ||
7715 | if (xdb_commands) | |
c5aa993b JM |
7716 | add_com ("lb", class_breakpoint, breakpoints_info, |
7717 | concat ("Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
7718 | The \"Type\" column indicates one of:\n\ |
7719 | \tbreakpoint - normal breakpoint\n\ | |
7720 | \twatchpoint - watchpoint\n\ | |
7721 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
7722 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
7723 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7724 | address and file/line number respectively.\n\n", | |
c5aa993b | 7725 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7726 | are set to the address of the last breakpoint listed.\n\n\ |
7727 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7728 | breakpoint set.", NULL)); | |
7729 | ||
c906108c | 7730 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, |
c5aa993b | 7731 | concat ("Status of all breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
7732 | The \"Type\" column indicates one of:\n\ |
7733 | \tbreakpoint - normal breakpoint\n\ | |
7734 | \twatchpoint - watchpoint\n\ | |
7735 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
7736 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
7737 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
7738 | \tfinish - internal breakpoint used by the \"finish\" command\n", | |
c5aa993b | 7739 | "The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ |
c906108c SS |
7740 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
7741 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
7742 | address and file/line number respectively.\n\n", | |
c5aa993b | 7743 | "Convenience variable \"$_\" and default examine address for \"x\"\n\ |
c906108c SS |
7744 | are set to the address of the last breakpoint listed.\n\n\ |
7745 | Convenience variable \"$bpnum\" contains the number of the last\n\ | |
7746 | breakpoint set.", NULL), | |
7747 | &maintenanceinfolist); | |
7748 | ||
c906108c | 7749 | add_com ("catch", class_breakpoint, catch_command, |
c5aa993b | 7750 | "Set catchpoints to catch events.\n\ |
c906108c SS |
7751 | Raised signals may be caught:\n\ |
7752 | \tcatch signal - all signals\n\ | |
7753 | \tcatch signal <signame> - a particular signal\n\ | |
7754 | Raised exceptions may be caught:\n\ | |
7755 | \tcatch throw - all exceptions, when thrown\n\ | |
7756 | \tcatch throw <exceptname> - a particular exception, when thrown\n\ | |
7757 | \tcatch catch - all exceptions, when caught\n\ | |
7758 | \tcatch catch <exceptname> - a particular exception, when caught\n\ | |
7759 | Thread or process events may be caught:\n\ | |
7760 | \tcatch thread_start - any threads, just after creation\n\ | |
7761 | \tcatch thread_exit - any threads, just before expiration\n\ | |
7762 | \tcatch thread_join - any threads, just after joins\n\ | |
7763 | Process events may be caught:\n\ | |
7764 | \tcatch start - any processes, just after creation\n\ | |
7765 | \tcatch exit - any processes, just before expiration\n\ | |
7766 | \tcatch fork - calls to fork()\n\ | |
7767 | \tcatch vfork - calls to vfork()\n\ | |
7768 | \tcatch exec - calls to exec()\n\ | |
7769 | Dynamically-linked library events may be caught:\n\ | |
7770 | \tcatch load - loads of any library\n\ | |
7771 | \tcatch load <libname> - loads of a particular library\n\ | |
7772 | \tcatch unload - unloads of any library\n\ | |
7773 | \tcatch unload <libname> - unloads of a particular library\n\ | |
7774 | The act of your program's execution stopping may also be caught:\n\ | |
7775 | \tcatch stop\n\n\ | |
7776 | C++ exceptions may be caught:\n\ | |
7777 | \tcatch throw - all exceptions, when thrown\n\ | |
7778 | \tcatch catch - all exceptions, when caught\n\ | |
7779 | \n\ | |
7780 | Do \"help set follow-fork-mode\" for info on debugging your program\n\ | |
7781 | after a fork or vfork is caught.\n\n\ | |
7782 | Do \"help breakpoints\" for info on other commands dealing with breakpoints."); | |
c5aa993b | 7783 | |
c906108c | 7784 | add_com ("tcatch", class_breakpoint, tcatch_command, |
c5aa993b | 7785 | "Set temporary catchpoints to catch events.\n\ |
c906108c SS |
7786 | Args like \"catch\" command.\n\ |
7787 | Like \"catch\" except the catchpoint is only temporary,\n\ | |
7788 | so it will be deleted when hit. Equivalent to \"catch\" followed\n\ | |
7789 | by using \"enable delete\" on the catchpoint number."); | |
c5aa993b JM |
7790 | |
7791 | add_com ("watch", class_breakpoint, watch_command, | |
c906108c SS |
7792 | "Set a watchpoint for an expression.\n\ |
7793 | A watchpoint stops execution of your program whenever the value of\n\ | |
7794 | an expression changes."); | |
7795 | ||
7796 | add_com ("rwatch", class_breakpoint, rwatch_command, | |
7797 | "Set a read watchpoint for an expression.\n\ | |
7798 | A watchpoint stops execution of your program whenever the value of\n\ | |
7799 | an expression is read."); | |
7800 | ||
7801 | add_com ("awatch", class_breakpoint, awatch_command, | |
7802 | "Set a watchpoint for an expression.\n\ | |
7803 | A watchpoint stops execution of your program whenever the value of\n\ | |
7804 | an expression is either read or written."); | |
7805 | ||
7806 | add_info ("watchpoints", breakpoints_info, | |
7807 | "Synonym for ``info breakpoints''."); | |
7808 | ||
7809 | ||
7810 | c = add_set_cmd ("can-use-hw-watchpoints", class_support, var_zinteger, | |
c5aa993b JM |
7811 | (char *) &can_use_hw_watchpoints, |
7812 | "Set debugger's willingness to use watchpoint hardware.\n\ | |
c906108c SS |
7813 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
7814 | such is available. (However, any hardware watchpoints that were\n\ | |
7815 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
7816 | hardware.)", | |
c5aa993b | 7817 | &setlist); |
c906108c SS |
7818 | add_show_from_set (c, &showlist); |
7819 | ||
7820 | can_use_hw_watchpoints = 1; | |
7821 | } |