| 1 | /* Scheme interface to breakpoints. |
| 2 | |
| 3 | Copyright (C) 2008-2016 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 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 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 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. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | /* See README file in this directory for implementation notes, coding |
| 21 | conventions, et.al. */ |
| 22 | |
| 23 | #include "defs.h" |
| 24 | #include "value.h" |
| 25 | #include "breakpoint.h" |
| 26 | #include "gdbcmd.h" |
| 27 | #include "gdbthread.h" |
| 28 | #include "observer.h" |
| 29 | #include "cli/cli-script.h" |
| 30 | #include "ada-lang.h" |
| 31 | #include "arch-utils.h" |
| 32 | #include "language.h" |
| 33 | #include "guile-internal.h" |
| 34 | #include "location.h" |
| 35 | |
| 36 | /* The <gdb:breakpoint> smob. |
| 37 | N.B.: The name of this struct is known to breakpoint.h. |
| 38 | |
| 39 | Note: Breakpoints are added to gdb using a two step process: |
| 40 | 1) Call make-breakpoint to create a <gdb:breakpoint> object. |
| 41 | 2) Call register-breakpoint! to add the breakpoint to gdb. |
| 42 | It is done this way so that the constructor, make-breakpoint, doesn't have |
| 43 | any side-effects. This means that the smob needs to store everything |
| 44 | that was passed to make-breakpoint. */ |
| 45 | |
| 46 | typedef struct gdbscm_breakpoint_object |
| 47 | { |
| 48 | /* This always appears first. */ |
| 49 | gdb_smob base; |
| 50 | |
| 51 | /* Non-zero if this breakpoint was created with make-breakpoint. */ |
| 52 | int is_scheme_bkpt; |
| 53 | |
| 54 | /* For breakpoints created with make-breakpoint, these are the parameters |
| 55 | that were passed to make-breakpoint. These values are not used except |
| 56 | to register the breakpoint with GDB. */ |
| 57 | struct |
| 58 | { |
| 59 | /* The string representation of the breakpoint. |
| 60 | Space for this lives in GC space. */ |
| 61 | char *location; |
| 62 | |
| 63 | /* The kind of breakpoint. |
| 64 | At the moment this can only be one of bp_breakpoint, bp_watchpoint. */ |
| 65 | enum bptype type; |
| 66 | |
| 67 | /* If a watchpoint, the kind of watchpoint. */ |
| 68 | enum target_hw_bp_type access_type; |
| 69 | |
| 70 | /* Non-zero if the breakpoint is an "internal" breakpoint. */ |
| 71 | int is_internal; |
| 72 | } spec; |
| 73 | |
| 74 | /* The breakpoint number according to gdb. |
| 75 | For breakpoints created from Scheme, this has the value -1 until the |
| 76 | breakpoint is registered with gdb. |
| 77 | This is recorded here because BP will be NULL when deleted. */ |
| 78 | int number; |
| 79 | |
| 80 | /* The gdb breakpoint object, or NULL if the breakpoint has not been |
| 81 | registered yet, or has been deleted. */ |
| 82 | struct breakpoint *bp; |
| 83 | |
| 84 | /* Backlink to our containing <gdb:breakpoint> smob. |
| 85 | This is needed when we are deleted, we need to unprotect the object |
| 86 | from GC. */ |
| 87 | SCM containing_scm; |
| 88 | |
| 89 | /* A stop condition or #f. */ |
| 90 | SCM stop; |
| 91 | } breakpoint_smob; |
| 92 | |
| 93 | static const char breakpoint_smob_name[] = "gdb:breakpoint"; |
| 94 | |
| 95 | /* The tag Guile knows the breakpoint smob by. */ |
| 96 | static scm_t_bits breakpoint_smob_tag; |
| 97 | |
| 98 | /* Variables used to pass information between the breakpoint_smob |
| 99 | constructor and the breakpoint-created hook function. */ |
| 100 | static SCM pending_breakpoint_scm = SCM_BOOL_F; |
| 101 | |
| 102 | /* Keywords used by create-breakpoint!. */ |
| 103 | static SCM type_keyword; |
| 104 | static SCM wp_class_keyword; |
| 105 | static SCM internal_keyword; |
| 106 | \f |
| 107 | /* Administrivia for breakpoint smobs. */ |
| 108 | |
| 109 | /* The smob "free" function for <gdb:breakpoint>. */ |
| 110 | |
| 111 | static size_t |
| 112 | bpscm_free_breakpoint_smob (SCM self) |
| 113 | { |
| 114 | breakpoint_smob *bp_smob = (breakpoint_smob *) SCM_SMOB_DATA (self); |
| 115 | |
| 116 | if (bp_smob->bp) |
| 117 | bp_smob->bp->scm_bp_object = NULL; |
| 118 | |
| 119 | /* Not necessary, done to catch bugs. */ |
| 120 | bp_smob->bp = NULL; |
| 121 | bp_smob->containing_scm = SCM_UNDEFINED; |
| 122 | bp_smob->stop = SCM_UNDEFINED; |
| 123 | |
| 124 | return 0; |
| 125 | } |
| 126 | |
| 127 | /* Return the name of TYPE. |
| 128 | This doesn't handle all types, just the ones we export. */ |
| 129 | |
| 130 | static const char * |
| 131 | bpscm_type_to_string (enum bptype type) |
| 132 | { |
| 133 | switch (type) |
| 134 | { |
| 135 | case bp_none: return "BP_NONE"; |
| 136 | case bp_breakpoint: return "BP_BREAKPOINT"; |
| 137 | case bp_watchpoint: return "BP_WATCHPOINT"; |
| 138 | case bp_hardware_watchpoint: return "BP_HARDWARE_WATCHPOINT"; |
| 139 | case bp_read_watchpoint: return "BP_READ_WATCHPOINT"; |
| 140 | case bp_access_watchpoint: return "BP_ACCESS_WATCHPOINT"; |
| 141 | default: return "internal/other"; |
| 142 | } |
| 143 | } |
| 144 | |
| 145 | /* Return the name of ENABLE_STATE. */ |
| 146 | |
| 147 | static const char * |
| 148 | bpscm_enable_state_to_string (enum enable_state enable_state) |
| 149 | { |
| 150 | switch (enable_state) |
| 151 | { |
| 152 | case bp_disabled: return "disabled"; |
| 153 | case bp_enabled: return "enabled"; |
| 154 | case bp_call_disabled: return "call_disabled"; |
| 155 | default: return "unknown"; |
| 156 | } |
| 157 | } |
| 158 | |
| 159 | /* The smob "print" function for <gdb:breakpoint>. */ |
| 160 | |
| 161 | static int |
| 162 | bpscm_print_breakpoint_smob (SCM self, SCM port, scm_print_state *pstate) |
| 163 | { |
| 164 | breakpoint_smob *bp_smob = (breakpoint_smob *) SCM_SMOB_DATA (self); |
| 165 | struct breakpoint *b = bp_smob->bp; |
| 166 | |
| 167 | gdbscm_printf (port, "#<%s", breakpoint_smob_name); |
| 168 | |
| 169 | /* Only print what we export to the user. |
| 170 | The rest are possibly internal implementation details. */ |
| 171 | |
| 172 | gdbscm_printf (port, " #%d", bp_smob->number); |
| 173 | |
| 174 | /* Careful, the breakpoint may be invalid. */ |
| 175 | if (b != NULL) |
| 176 | { |
| 177 | const char *str; |
| 178 | |
| 179 | gdbscm_printf (port, " %s %s %s", |
| 180 | bpscm_type_to_string (b->type), |
| 181 | bpscm_enable_state_to_string (b->enable_state), |
| 182 | b->silent ? "silent" : "noisy"); |
| 183 | |
| 184 | gdbscm_printf (port, " hit:%d", b->hit_count); |
| 185 | gdbscm_printf (port, " ignore:%d", b->ignore_count); |
| 186 | |
| 187 | str = event_location_to_string (b->location); |
| 188 | if (str != NULL) |
| 189 | gdbscm_printf (port, " @%s", str); |
| 190 | } |
| 191 | |
| 192 | scm_puts (">", port); |
| 193 | |
| 194 | scm_remember_upto_here_1 (self); |
| 195 | |
| 196 | /* Non-zero means success. */ |
| 197 | return 1; |
| 198 | } |
| 199 | |
| 200 | /* Low level routine to create a <gdb:breakpoint> object. */ |
| 201 | |
| 202 | static SCM |
| 203 | bpscm_make_breakpoint_smob (void) |
| 204 | { |
| 205 | breakpoint_smob *bp_smob = (breakpoint_smob *) |
| 206 | scm_gc_malloc (sizeof (breakpoint_smob), breakpoint_smob_name); |
| 207 | SCM bp_scm; |
| 208 | |
| 209 | memset (bp_smob, 0, sizeof (*bp_smob)); |
| 210 | bp_smob->number = -1; |
| 211 | bp_smob->stop = SCM_BOOL_F; |
| 212 | bp_scm = scm_new_smob (breakpoint_smob_tag, (scm_t_bits) bp_smob); |
| 213 | bp_smob->containing_scm = bp_scm; |
| 214 | gdbscm_init_gsmob (&bp_smob->base); |
| 215 | |
| 216 | return bp_scm; |
| 217 | } |
| 218 | |
| 219 | /* Return non-zero if we want a Scheme wrapper for breakpoint B. |
| 220 | If FROM_SCHEME is non-zero,this is called for a breakpoint created |
| 221 | by the user from Scheme. Otherwise it is zero. */ |
| 222 | |
| 223 | static int |
| 224 | bpscm_want_scm_wrapper_p (struct breakpoint *bp, int from_scheme) |
| 225 | { |
| 226 | /* Don't create <gdb:breakpoint> objects for internal GDB breakpoints. */ |
| 227 | if (bp->number < 0 && !from_scheme) |
| 228 | return 0; |
| 229 | |
| 230 | /* The others are not supported. */ |
| 231 | if (bp->type != bp_breakpoint |
| 232 | && bp->type != bp_watchpoint |
| 233 | && bp->type != bp_hardware_watchpoint |
| 234 | && bp->type != bp_read_watchpoint |
| 235 | && bp->type != bp_access_watchpoint) |
| 236 | return 0; |
| 237 | |
| 238 | return 1; |
| 239 | } |
| 240 | |
| 241 | /* Install the Scheme side of a breakpoint, CONTAINING_SCM, in |
| 242 | the gdb side BP. */ |
| 243 | |
| 244 | static void |
| 245 | bpscm_attach_scm_to_breakpoint (struct breakpoint *bp, SCM containing_scm) |
| 246 | { |
| 247 | breakpoint_smob *bp_smob; |
| 248 | |
| 249 | bp_smob = (breakpoint_smob *) SCM_SMOB_DATA (containing_scm); |
| 250 | bp_smob->number = bp->number; |
| 251 | bp_smob->bp = bp; |
| 252 | bp_smob->containing_scm = containing_scm; |
| 253 | bp_smob->bp->scm_bp_object = bp_smob; |
| 254 | |
| 255 | /* The owner of this breakpoint is not in GC-controlled memory, so we need |
| 256 | to protect it from GC until the breakpoint is deleted. */ |
| 257 | scm_gc_protect_object (containing_scm); |
| 258 | } |
| 259 | |
| 260 | /* Return non-zero if SCM is a breakpoint smob. */ |
| 261 | |
| 262 | static int |
| 263 | bpscm_is_breakpoint (SCM scm) |
| 264 | { |
| 265 | return SCM_SMOB_PREDICATE (breakpoint_smob_tag, scm); |
| 266 | } |
| 267 | |
| 268 | /* (breakpoint? scm) -> boolean */ |
| 269 | |
| 270 | static SCM |
| 271 | gdbscm_breakpoint_p (SCM scm) |
| 272 | { |
| 273 | return scm_from_bool (bpscm_is_breakpoint (scm)); |
| 274 | } |
| 275 | |
| 276 | /* Returns the <gdb:breakpoint> object in SELF. |
| 277 | Throws an exception if SELF is not a <gdb:breakpoint> object. */ |
| 278 | |
| 279 | static SCM |
| 280 | bpscm_get_breakpoint_arg_unsafe (SCM self, int arg_pos, const char *func_name) |
| 281 | { |
| 282 | SCM_ASSERT_TYPE (bpscm_is_breakpoint (self), self, arg_pos, func_name, |
| 283 | breakpoint_smob_name); |
| 284 | |
| 285 | return self; |
| 286 | } |
| 287 | |
| 288 | /* Returns a pointer to the breakpoint smob of SELF. |
| 289 | Throws an exception if SELF is not a <gdb:breakpoint> object. */ |
| 290 | |
| 291 | static breakpoint_smob * |
| 292 | bpscm_get_breakpoint_smob_arg_unsafe (SCM self, int arg_pos, |
| 293 | const char *func_name) |
| 294 | { |
| 295 | SCM bp_scm = bpscm_get_breakpoint_arg_unsafe (self, arg_pos, func_name); |
| 296 | breakpoint_smob *bp_smob = (breakpoint_smob *) SCM_SMOB_DATA (bp_scm); |
| 297 | |
| 298 | return bp_smob; |
| 299 | } |
| 300 | |
| 301 | /* Return non-zero if breakpoint BP_SMOB is valid. */ |
| 302 | |
| 303 | static int |
| 304 | bpscm_is_valid (breakpoint_smob *bp_smob) |
| 305 | { |
| 306 | return bp_smob->bp != NULL; |
| 307 | } |
| 308 | |
| 309 | /* Returns the breakpoint smob in SELF, verifying it's valid. |
| 310 | Throws an exception if SELF is not a <gdb:breakpoint> object, |
| 311 | or is invalid. */ |
| 312 | |
| 313 | static breakpoint_smob * |
| 314 | bpscm_get_valid_breakpoint_smob_arg_unsafe (SCM self, int arg_pos, |
| 315 | const char *func_name) |
| 316 | { |
| 317 | breakpoint_smob *bp_smob |
| 318 | = bpscm_get_breakpoint_smob_arg_unsafe (self, arg_pos, func_name); |
| 319 | |
| 320 | if (!bpscm_is_valid (bp_smob)) |
| 321 | { |
| 322 | gdbscm_invalid_object_error (func_name, arg_pos, self, |
| 323 | _("<gdb:breakpoint>")); |
| 324 | } |
| 325 | |
| 326 | return bp_smob; |
| 327 | } |
| 328 | \f |
| 329 | /* Breakpoint methods. */ |
| 330 | |
| 331 | /* (make-breakpoint string [#:type integer] [#:wp-class integer] |
| 332 | [#:internal boolean) -> <gdb:breakpoint> |
| 333 | |
| 334 | The result is the <gdb:breakpoint> Scheme object. |
| 335 | The breakpoint is not available to be used yet, however. |
| 336 | It must still be added to gdb with register-breakpoint!. */ |
| 337 | |
| 338 | static SCM |
| 339 | gdbscm_make_breakpoint (SCM location_scm, SCM rest) |
| 340 | { |
| 341 | const SCM keywords[] = { |
| 342 | type_keyword, wp_class_keyword, internal_keyword, SCM_BOOL_F |
| 343 | }; |
| 344 | char *s; |
| 345 | char *location; |
| 346 | int type_arg_pos = -1, access_type_arg_pos = -1, internal_arg_pos = -1; |
| 347 | enum bptype type = bp_breakpoint; |
| 348 | enum target_hw_bp_type access_type = hw_write; |
| 349 | int internal = 0; |
| 350 | SCM result; |
| 351 | breakpoint_smob *bp_smob; |
| 352 | |
| 353 | gdbscm_parse_function_args (FUNC_NAME, SCM_ARG1, keywords, "s#iit", |
| 354 | location_scm, &location, rest, |
| 355 | &type_arg_pos, &type, |
| 356 | &access_type_arg_pos, &access_type, |
| 357 | &internal_arg_pos, &internal); |
| 358 | |
| 359 | result = bpscm_make_breakpoint_smob (); |
| 360 | bp_smob = (breakpoint_smob *) SCM_SMOB_DATA (result); |
| 361 | |
| 362 | s = location; |
| 363 | location = gdbscm_gc_xstrdup (s); |
| 364 | xfree (s); |
| 365 | |
| 366 | switch (type) |
| 367 | { |
| 368 | case bp_breakpoint: |
| 369 | if (access_type_arg_pos > 0) |
| 370 | { |
| 371 | gdbscm_misc_error (FUNC_NAME, access_type_arg_pos, |
| 372 | scm_from_int (access_type), |
| 373 | _("access type with breakpoint is not allowed")); |
| 374 | } |
| 375 | break; |
| 376 | case bp_watchpoint: |
| 377 | switch (access_type) |
| 378 | { |
| 379 | case hw_write: |
| 380 | case hw_access: |
| 381 | case hw_read: |
| 382 | break; |
| 383 | default: |
| 384 | gdbscm_out_of_range_error (FUNC_NAME, access_type_arg_pos, |
| 385 | scm_from_int (access_type), |
| 386 | _("invalid watchpoint class")); |
| 387 | } |
| 388 | break; |
| 389 | default: |
| 390 | gdbscm_out_of_range_error (FUNC_NAME, access_type_arg_pos, |
| 391 | scm_from_int (type), |
| 392 | _("invalid breakpoint type")); |
| 393 | } |
| 394 | |
| 395 | bp_smob->is_scheme_bkpt = 1; |
| 396 | bp_smob->spec.location = location; |
| 397 | bp_smob->spec.type = type; |
| 398 | bp_smob->spec.access_type = access_type; |
| 399 | bp_smob->spec.is_internal = internal; |
| 400 | |
| 401 | return result; |
| 402 | } |
| 403 | |
| 404 | /* (register-breakpoint! <gdb:breakpoint>) -> unspecified |
| 405 | |
| 406 | It is an error to register a breakpoint created outside of Guile, |
| 407 | or an already-registered breakpoint. */ |
| 408 | |
| 409 | static SCM |
| 410 | gdbscm_register_breakpoint_x (SCM self) |
| 411 | { |
| 412 | breakpoint_smob *bp_smob |
| 413 | = bpscm_get_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); |
| 414 | struct gdb_exception except = exception_none; |
| 415 | char *location, *copy; |
| 416 | struct event_location *eloc; |
| 417 | struct cleanup *cleanup; |
| 418 | |
| 419 | /* We only support registering breakpoints created with make-breakpoint. */ |
| 420 | if (!bp_smob->is_scheme_bkpt) |
| 421 | scm_misc_error (FUNC_NAME, _("not a Scheme breakpoint"), SCM_EOL); |
| 422 | |
| 423 | if (bpscm_is_valid (bp_smob)) |
| 424 | scm_misc_error (FUNC_NAME, _("breakpoint is already registered"), SCM_EOL); |
| 425 | |
| 426 | pending_breakpoint_scm = self; |
| 427 | location = bp_smob->spec.location; |
| 428 | copy = skip_spaces (location); |
| 429 | eloc = string_to_event_location_basic (©, current_language); |
| 430 | cleanup = make_cleanup_delete_event_location (eloc); |
| 431 | |
| 432 | TRY |
| 433 | { |
| 434 | int internal = bp_smob->spec.is_internal; |
| 435 | |
| 436 | switch (bp_smob->spec.type) |
| 437 | { |
| 438 | case bp_breakpoint: |
| 439 | { |
| 440 | create_breakpoint (get_current_arch (), |
| 441 | eloc, NULL, -1, NULL, |
| 442 | 0, |
| 443 | 0, bp_breakpoint, |
| 444 | 0, |
| 445 | AUTO_BOOLEAN_TRUE, |
| 446 | &bkpt_breakpoint_ops, |
| 447 | 0, 1, internal, 0); |
| 448 | break; |
| 449 | } |
| 450 | case bp_watchpoint: |
| 451 | { |
| 452 | enum target_hw_bp_type access_type = bp_smob->spec.access_type; |
| 453 | |
| 454 | if (access_type == hw_write) |
| 455 | watch_command_wrapper (location, 0, internal); |
| 456 | else if (access_type == hw_access) |
| 457 | awatch_command_wrapper (location, 0, internal); |
| 458 | else if (access_type == hw_read) |
| 459 | rwatch_command_wrapper (location, 0, internal); |
| 460 | else |
| 461 | gdb_assert_not_reached ("invalid access type"); |
| 462 | break; |
| 463 | } |
| 464 | default: |
| 465 | gdb_assert_not_reached ("invalid breakpoint type"); |
| 466 | } |
| 467 | } |
| 468 | CATCH (ex, RETURN_MASK_ALL) |
| 469 | { |
| 470 | except = ex; |
| 471 | } |
| 472 | END_CATCH |
| 473 | |
| 474 | /* Ensure this gets reset, even if there's an error. */ |
| 475 | pending_breakpoint_scm = SCM_BOOL_F; |
| 476 | GDBSCM_HANDLE_GDB_EXCEPTION (except); |
| 477 | do_cleanups (cleanup); |
| 478 | |
| 479 | return SCM_UNSPECIFIED; |
| 480 | } |
| 481 | |
| 482 | /* (delete-breakpoint! <gdb:breakpoint>) -> unspecified |
| 483 | Scheme function which deletes (removes) the underlying GDB breakpoint |
| 484 | from GDB's list of breakpoints. This triggers the breakpoint_deleted |
| 485 | observer which will call gdbscm_breakpoint_deleted; that function cleans |
| 486 | up the Scheme bits. */ |
| 487 | |
| 488 | static SCM |
| 489 | gdbscm_delete_breakpoint_x (SCM self) |
| 490 | { |
| 491 | breakpoint_smob *bp_smob |
| 492 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); |
| 493 | |
| 494 | TRY |
| 495 | { |
| 496 | delete_breakpoint (bp_smob->bp); |
| 497 | } |
| 498 | CATCH (except, RETURN_MASK_ALL) |
| 499 | { |
| 500 | GDBSCM_HANDLE_GDB_EXCEPTION (except); |
| 501 | } |
| 502 | END_CATCH |
| 503 | |
| 504 | return SCM_UNSPECIFIED; |
| 505 | } |
| 506 | |
| 507 | /* iterate_over_breakpoints function for gdbscm_breakpoints. */ |
| 508 | |
| 509 | static int |
| 510 | bpscm_build_bp_list (struct breakpoint *bp, void *arg) |
| 511 | { |
| 512 | SCM *list = (SCM *) arg; |
| 513 | breakpoint_smob *bp_smob = bp->scm_bp_object; |
| 514 | |
| 515 | /* Lazily create wrappers for breakpoints created outside Scheme. */ |
| 516 | |
| 517 | if (bp_smob == NULL) |
| 518 | { |
| 519 | if (bpscm_want_scm_wrapper_p (bp, 0)) |
| 520 | { |
| 521 | SCM bp_scm; |
| 522 | |
| 523 | bp_scm = bpscm_make_breakpoint_smob (); |
| 524 | bpscm_attach_scm_to_breakpoint (bp, bp_scm); |
| 525 | /* Refetch it. */ |
| 526 | bp_smob = bp->scm_bp_object; |
| 527 | } |
| 528 | } |
| 529 | |
| 530 | /* Not all breakpoints will have a companion Scheme object. |
| 531 | Only breakpoints that trigger the created_breakpoint observer call, |
| 532 | and satisfy certain conditions (see bpscm_want_scm_wrapper_p), |
| 533 | get a companion object (this includes Scheme-created breakpoints). */ |
| 534 | |
| 535 | if (bp_smob != NULL) |
| 536 | *list = scm_cons (bp_smob->containing_scm, *list); |
| 537 | |
| 538 | return 0; |
| 539 | } |
| 540 | |
| 541 | /* (breakpoints) -> list |
| 542 | Return a list of all breakpoints. */ |
| 543 | |
| 544 | static SCM |
| 545 | gdbscm_breakpoints (void) |
| 546 | { |
| 547 | SCM list = SCM_EOL; |
| 548 | |
| 549 | /* If iterate_over_breakpoints returns non-NULL it means the iteration |
| 550 | terminated early. |
| 551 | In that case abandon building the list and return #f. */ |
| 552 | if (iterate_over_breakpoints (bpscm_build_bp_list, &list) != NULL) |
| 553 | return SCM_BOOL_F; |
| 554 | |
| 555 | return scm_reverse_x (list, SCM_EOL); |
| 556 | } |
| 557 | |
| 558 | /* (breakpoint-valid? <gdb:breakpoint>) -> boolean |
| 559 | Returns #t if SELF is still valid. */ |
| 560 | |
| 561 | static SCM |
| 562 | gdbscm_breakpoint_valid_p (SCM self) |
| 563 | { |
| 564 | breakpoint_smob *bp_smob |
| 565 | = bpscm_get_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); |
| 566 | |
| 567 | return scm_from_bool (bpscm_is_valid (bp_smob)); |
| 568 | } |
| 569 | |
| 570 | /* (breakpoint-enabled? <gdb:breakpoint>) -> boolean */ |
| 571 | |
| 572 | static SCM |
| 573 | gdbscm_breakpoint_enabled_p (SCM self) |
| 574 | { |
| 575 | breakpoint_smob *bp_smob |
| 576 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); |
| 577 | |
| 578 | return scm_from_bool (bp_smob->bp->enable_state == bp_enabled); |
| 579 | } |
| 580 | |
| 581 | /* (set-breakpoint-enabled? <gdb:breakpoint> boolean) -> unspecified */ |
| 582 | |
| 583 | static SCM |
| 584 | gdbscm_set_breakpoint_enabled_x (SCM self, SCM newvalue) |
| 585 | { |
| 586 | breakpoint_smob *bp_smob |
| 587 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); |
| 588 | |
| 589 | SCM_ASSERT_TYPE (gdbscm_is_bool (newvalue), newvalue, SCM_ARG2, FUNC_NAME, |
| 590 | _("boolean")); |
| 591 | |
| 592 | TRY |
| 593 | { |
| 594 | if (gdbscm_is_true (newvalue)) |
| 595 | enable_breakpoint (bp_smob->bp); |
| 596 | else |
| 597 | disable_breakpoint (bp_smob->bp); |
| 598 | } |
| 599 | CATCH (except, RETURN_MASK_ALL) |
| 600 | { |
| 601 | GDBSCM_HANDLE_GDB_EXCEPTION (except); |
| 602 | } |
| 603 | END_CATCH |
| 604 | |
| 605 | return SCM_UNSPECIFIED; |
| 606 | } |
| 607 | |
| 608 | /* (breakpoint-silent? <gdb:breakpoint>) -> boolean */ |
| 609 | |
| 610 | static SCM |
| 611 | gdbscm_breakpoint_silent_p (SCM self) |
| 612 | { |
| 613 | breakpoint_smob *bp_smob |
| 614 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); |
| 615 | |
| 616 | return scm_from_bool (bp_smob->bp->silent); |
| 617 | } |
| 618 | |
| 619 | /* (set-breakpoint-silent?! <gdb:breakpoint> boolean) -> unspecified */ |
| 620 | |
| 621 | static SCM |
| 622 | gdbscm_set_breakpoint_silent_x (SCM self, SCM newvalue) |
| 623 | { |
| 624 | breakpoint_smob *bp_smob |
| 625 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); |
| 626 | |
| 627 | SCM_ASSERT_TYPE (gdbscm_is_bool (newvalue), newvalue, SCM_ARG2, FUNC_NAME, |
| 628 | _("boolean")); |
| 629 | |
| 630 | TRY |
| 631 | { |
| 632 | breakpoint_set_silent (bp_smob->bp, gdbscm_is_true (newvalue)); |
| 633 | } |
| 634 | CATCH (except, RETURN_MASK_ALL) |
| 635 | { |
| 636 | GDBSCM_HANDLE_GDB_EXCEPTION (except); |
| 637 | } |
| 638 | END_CATCH |
| 639 | |
| 640 | return SCM_UNSPECIFIED; |
| 641 | } |
| 642 | |
| 643 | /* (breakpoint-ignore-count <gdb:breakpoint>) -> integer */ |
| 644 | |
| 645 | static SCM |
| 646 | gdbscm_breakpoint_ignore_count (SCM self) |
| 647 | { |
| 648 | breakpoint_smob *bp_smob |
| 649 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); |
| 650 | |
| 651 | return scm_from_long (bp_smob->bp->ignore_count); |
| 652 | } |
| 653 | |
| 654 | /* (set-breakpoint-ignore-count! <gdb:breakpoint> integer) |
| 655 | -> unspecified */ |
| 656 | |
| 657 | static SCM |
| 658 | gdbscm_set_breakpoint_ignore_count_x (SCM self, SCM newvalue) |
| 659 | { |
| 660 | breakpoint_smob *bp_smob |
| 661 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); |
| 662 | long value; |
| 663 | |
| 664 | SCM_ASSERT_TYPE (scm_is_signed_integer (newvalue, LONG_MIN, LONG_MAX), |
| 665 | newvalue, SCM_ARG2, FUNC_NAME, _("integer")); |
| 666 | |
| 667 | value = scm_to_long (newvalue); |
| 668 | if (value < 0) |
| 669 | value = 0; |
| 670 | |
| 671 | TRY |
| 672 | { |
| 673 | set_ignore_count (bp_smob->number, (int) value, 0); |
| 674 | } |
| 675 | CATCH (except, RETURN_MASK_ALL) |
| 676 | { |
| 677 | GDBSCM_HANDLE_GDB_EXCEPTION (except); |
| 678 | } |
| 679 | END_CATCH |
| 680 | |
| 681 | return SCM_UNSPECIFIED; |
| 682 | } |
| 683 | |
| 684 | /* (breakpoint-hit-count <gdb:breakpoint>) -> integer */ |
| 685 | |
| 686 | static SCM |
| 687 | gdbscm_breakpoint_hit_count (SCM self) |
| 688 | { |
| 689 | breakpoint_smob *bp_smob |
| 690 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); |
| 691 | |
| 692 | return scm_from_long (bp_smob->bp->hit_count); |
| 693 | } |
| 694 | |
| 695 | /* (set-breakpoint-hit-count! <gdb:breakpoint> integer) -> unspecified */ |
| 696 | |
| 697 | static SCM |
| 698 | gdbscm_set_breakpoint_hit_count_x (SCM self, SCM newvalue) |
| 699 | { |
| 700 | breakpoint_smob *bp_smob |
| 701 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); |
| 702 | long value; |
| 703 | |
| 704 | SCM_ASSERT_TYPE (scm_is_signed_integer (newvalue, LONG_MIN, LONG_MAX), |
| 705 | newvalue, SCM_ARG2, FUNC_NAME, _("integer")); |
| 706 | |
| 707 | value = scm_to_long (newvalue); |
| 708 | if (value < 0) |
| 709 | value = 0; |
| 710 | |
| 711 | if (value != 0) |
| 712 | { |
| 713 | gdbscm_out_of_range_error (FUNC_NAME, SCM_ARG2, newvalue, |
| 714 | _("hit-count must be zero")); |
| 715 | } |
| 716 | |
| 717 | bp_smob->bp->hit_count = 0; |
| 718 | |
| 719 | return SCM_UNSPECIFIED; |
| 720 | } |
| 721 | |
| 722 | /* (breakpoint-thread <gdb:breakpoint>) -> integer */ |
| 723 | |
| 724 | static SCM |
| 725 | gdbscm_breakpoint_thread (SCM self) |
| 726 | { |
| 727 | breakpoint_smob *bp_smob |
| 728 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); |
| 729 | |
| 730 | if (bp_smob->bp->thread == -1) |
| 731 | return SCM_BOOL_F; |
| 732 | |
| 733 | return scm_from_long (bp_smob->bp->thread); |
| 734 | } |
| 735 | |
| 736 | /* (set-breakpoint-thread! <gdb:breakpoint> integer) -> unspecified */ |
| 737 | |
| 738 | static SCM |
| 739 | gdbscm_set_breakpoint_thread_x (SCM self, SCM newvalue) |
| 740 | { |
| 741 | breakpoint_smob *bp_smob |
| 742 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); |
| 743 | long id; |
| 744 | |
| 745 | if (scm_is_signed_integer (newvalue, LONG_MIN, LONG_MAX)) |
| 746 | { |
| 747 | id = scm_to_long (newvalue); |
| 748 | if (!valid_global_thread_id (id)) |
| 749 | { |
| 750 | gdbscm_out_of_range_error (FUNC_NAME, SCM_ARG2, newvalue, |
| 751 | _("invalid thread id")); |
| 752 | } |
| 753 | } |
| 754 | else if (gdbscm_is_false (newvalue)) |
| 755 | id = -1; |
| 756 | else |
| 757 | SCM_ASSERT_TYPE (0, newvalue, SCM_ARG2, FUNC_NAME, _("integer or #f")); |
| 758 | |
| 759 | breakpoint_set_thread (bp_smob->bp, id); |
| 760 | |
| 761 | return SCM_UNSPECIFIED; |
| 762 | } |
| 763 | |
| 764 | /* (breakpoint-task <gdb:breakpoint>) -> integer */ |
| 765 | |
| 766 | static SCM |
| 767 | gdbscm_breakpoint_task (SCM self) |
| 768 | { |
| 769 | breakpoint_smob *bp_smob |
| 770 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); |
| 771 | |
| 772 | if (bp_smob->bp->task == 0) |
| 773 | return SCM_BOOL_F; |
| 774 | |
| 775 | return scm_from_long (bp_smob->bp->task); |
| 776 | } |
| 777 | |
| 778 | /* (set-breakpoint-task! <gdb:breakpoint> integer) -> unspecified */ |
| 779 | |
| 780 | static SCM |
| 781 | gdbscm_set_breakpoint_task_x (SCM self, SCM newvalue) |
| 782 | { |
| 783 | breakpoint_smob *bp_smob |
| 784 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); |
| 785 | long id; |
| 786 | int valid_id = 0; |
| 787 | |
| 788 | if (scm_is_signed_integer (newvalue, LONG_MIN, LONG_MAX)) |
| 789 | { |
| 790 | id = scm_to_long (newvalue); |
| 791 | |
| 792 | TRY |
| 793 | { |
| 794 | valid_id = valid_task_id (id); |
| 795 | } |
| 796 | CATCH (except, RETURN_MASK_ALL) |
| 797 | { |
| 798 | GDBSCM_HANDLE_GDB_EXCEPTION (except); |
| 799 | } |
| 800 | END_CATCH |
| 801 | |
| 802 | if (! valid_id) |
| 803 | { |
| 804 | gdbscm_out_of_range_error (FUNC_NAME, SCM_ARG2, newvalue, |
| 805 | _("invalid task id")); |
| 806 | } |
| 807 | } |
| 808 | else if (gdbscm_is_false (newvalue)) |
| 809 | id = 0; |
| 810 | else |
| 811 | SCM_ASSERT_TYPE (0, newvalue, SCM_ARG2, FUNC_NAME, _("integer or #f")); |
| 812 | |
| 813 | TRY |
| 814 | { |
| 815 | breakpoint_set_task (bp_smob->bp, id); |
| 816 | } |
| 817 | CATCH (except, RETURN_MASK_ALL) |
| 818 | { |
| 819 | GDBSCM_HANDLE_GDB_EXCEPTION (except); |
| 820 | } |
| 821 | END_CATCH |
| 822 | |
| 823 | return SCM_UNSPECIFIED; |
| 824 | } |
| 825 | |
| 826 | /* (breakpoint-location <gdb:breakpoint>) -> string */ |
| 827 | |
| 828 | static SCM |
| 829 | gdbscm_breakpoint_location (SCM self) |
| 830 | { |
| 831 | breakpoint_smob *bp_smob |
| 832 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); |
| 833 | const char *str; |
| 834 | |
| 835 | if (bp_smob->bp->type != bp_breakpoint) |
| 836 | return SCM_BOOL_F; |
| 837 | |
| 838 | str = event_location_to_string (bp_smob->bp->location); |
| 839 | if (! str) |
| 840 | str = ""; |
| 841 | |
| 842 | return gdbscm_scm_from_c_string (str); |
| 843 | } |
| 844 | |
| 845 | /* (breakpoint-expression <gdb:breakpoint>) -> string |
| 846 | This is only valid for watchpoints. |
| 847 | Returns #f for non-watchpoints. */ |
| 848 | |
| 849 | static SCM |
| 850 | gdbscm_breakpoint_expression (SCM self) |
| 851 | { |
| 852 | breakpoint_smob *bp_smob |
| 853 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); |
| 854 | char *str; |
| 855 | struct watchpoint *wp; |
| 856 | |
| 857 | if (!is_watchpoint (bp_smob->bp)) |
| 858 | return SCM_BOOL_F; |
| 859 | |
| 860 | wp = (struct watchpoint *) bp_smob->bp; |
| 861 | |
| 862 | str = wp->exp_string; |
| 863 | if (! str) |
| 864 | str = ""; |
| 865 | |
| 866 | return gdbscm_scm_from_c_string (str); |
| 867 | } |
| 868 | |
| 869 | /* (breakpoint-condition <gdb:breakpoint>) -> string */ |
| 870 | |
| 871 | static SCM |
| 872 | gdbscm_breakpoint_condition (SCM self) |
| 873 | { |
| 874 | breakpoint_smob *bp_smob |
| 875 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); |
| 876 | char *str; |
| 877 | |
| 878 | str = bp_smob->bp->cond_string; |
| 879 | if (! str) |
| 880 | return SCM_BOOL_F; |
| 881 | |
| 882 | return gdbscm_scm_from_c_string (str); |
| 883 | } |
| 884 | |
| 885 | /* (set-breakpoint-condition! <gdb:breakpoint> string|#f) |
| 886 | -> unspecified */ |
| 887 | |
| 888 | static SCM |
| 889 | gdbscm_set_breakpoint_condition_x (SCM self, SCM newvalue) |
| 890 | { |
| 891 | breakpoint_smob *bp_smob |
| 892 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); |
| 893 | char *exp; |
| 894 | struct gdb_exception except = exception_none; |
| 895 | |
| 896 | SCM_ASSERT_TYPE (scm_is_string (newvalue) || gdbscm_is_false (newvalue), |
| 897 | newvalue, SCM_ARG2, FUNC_NAME, |
| 898 | _("string or #f")); |
| 899 | |
| 900 | if (gdbscm_is_false (newvalue)) |
| 901 | exp = NULL; |
| 902 | else |
| 903 | exp = gdbscm_scm_to_c_string (newvalue); |
| 904 | |
| 905 | TRY |
| 906 | { |
| 907 | set_breakpoint_condition (bp_smob->bp, exp ? exp : "", 0); |
| 908 | } |
| 909 | CATCH (ex, RETURN_MASK_ALL) |
| 910 | { |
| 911 | except = ex; |
| 912 | } |
| 913 | END_CATCH |
| 914 | |
| 915 | xfree (exp); |
| 916 | GDBSCM_HANDLE_GDB_EXCEPTION (except); |
| 917 | |
| 918 | return SCM_UNSPECIFIED; |
| 919 | } |
| 920 | |
| 921 | /* (breakpoint-stop <gdb:breakpoint>) -> procedure or #f */ |
| 922 | |
| 923 | static SCM |
| 924 | gdbscm_breakpoint_stop (SCM self) |
| 925 | { |
| 926 | breakpoint_smob *bp_smob |
| 927 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); |
| 928 | |
| 929 | return bp_smob->stop; |
| 930 | } |
| 931 | |
| 932 | /* (set-breakpoint-stop! <gdb:breakpoint> procedure|#f) |
| 933 | -> unspecified */ |
| 934 | |
| 935 | static SCM |
| 936 | gdbscm_set_breakpoint_stop_x (SCM self, SCM newvalue) |
| 937 | { |
| 938 | breakpoint_smob *bp_smob |
| 939 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); |
| 940 | const struct extension_language_defn *extlang = NULL; |
| 941 | |
| 942 | SCM_ASSERT_TYPE (gdbscm_is_procedure (newvalue) |
| 943 | || gdbscm_is_false (newvalue), |
| 944 | newvalue, SCM_ARG2, FUNC_NAME, |
| 945 | _("procedure or #f")); |
| 946 | |
| 947 | if (bp_smob->bp->cond_string != NULL) |
| 948 | extlang = get_ext_lang_defn (EXT_LANG_GDB); |
| 949 | if (extlang == NULL) |
| 950 | extlang = get_breakpoint_cond_ext_lang (bp_smob->bp, EXT_LANG_GUILE); |
| 951 | if (extlang != NULL) |
| 952 | { |
| 953 | char *error_text |
| 954 | = xstrprintf (_("Only one stop condition allowed. There is" |
| 955 | " currently a %s stop condition defined for" |
| 956 | " this breakpoint."), |
| 957 | ext_lang_capitalized_name (extlang)); |
| 958 | |
| 959 | scm_dynwind_begin ((scm_t_dynwind_flags) 0); |
| 960 | gdbscm_dynwind_xfree (error_text); |
| 961 | gdbscm_out_of_range_error (FUNC_NAME, SCM_ARG1, self, error_text); |
| 962 | /* The following line, while unnecessary, is present for completeness |
| 963 | sake. */ |
| 964 | scm_dynwind_end (); |
| 965 | } |
| 966 | |
| 967 | bp_smob->stop = newvalue; |
| 968 | |
| 969 | return SCM_UNSPECIFIED; |
| 970 | } |
| 971 | |
| 972 | /* (breakpoint-commands <gdb:breakpoint>) -> string */ |
| 973 | |
| 974 | static SCM |
| 975 | gdbscm_breakpoint_commands (SCM self) |
| 976 | { |
| 977 | breakpoint_smob *bp_smob |
| 978 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); |
| 979 | struct breakpoint *bp; |
| 980 | long length; |
| 981 | struct ui_file *string_file; |
| 982 | struct cleanup *chain; |
| 983 | SCM result; |
| 984 | |
| 985 | bp = bp_smob->bp; |
| 986 | |
| 987 | if (bp->commands == NULL) |
| 988 | return SCM_BOOL_F; |
| 989 | |
| 990 | string_file = mem_fileopen (); |
| 991 | chain = make_cleanup_ui_file_delete (string_file); |
| 992 | |
| 993 | current_uiout->redirect (string_file); |
| 994 | TRY |
| 995 | { |
| 996 | print_command_lines (current_uiout, breakpoint_commands (bp), 0); |
| 997 | } |
| 998 | current_uiout->redirect (NULL); |
| 999 | CATCH (except, RETURN_MASK_ALL) |
| 1000 | { |
| 1001 | do_cleanups (chain); |
| 1002 | gdbscm_throw_gdb_exception (except); |
| 1003 | } |
| 1004 | END_CATCH |
| 1005 | |
| 1006 | std::string cmdstr = ui_file_as_string (string_file); |
| 1007 | result = gdbscm_scm_from_c_string (cmdstr.c_str ()); |
| 1008 | |
| 1009 | do_cleanups (chain); |
| 1010 | return result; |
| 1011 | } |
| 1012 | |
| 1013 | /* (breakpoint-type <gdb:breakpoint>) -> integer */ |
| 1014 | |
| 1015 | static SCM |
| 1016 | gdbscm_breakpoint_type (SCM self) |
| 1017 | { |
| 1018 | breakpoint_smob *bp_smob |
| 1019 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); |
| 1020 | |
| 1021 | return scm_from_long (bp_smob->bp->type); |
| 1022 | } |
| 1023 | |
| 1024 | /* (breakpoint-visible? <gdb:breakpoint>) -> boolean */ |
| 1025 | |
| 1026 | static SCM |
| 1027 | gdbscm_breakpoint_visible (SCM self) |
| 1028 | { |
| 1029 | breakpoint_smob *bp_smob |
| 1030 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); |
| 1031 | |
| 1032 | return scm_from_bool (bp_smob->bp->number >= 0); |
| 1033 | } |
| 1034 | |
| 1035 | /* (breakpoint-number <gdb:breakpoint>) -> integer */ |
| 1036 | |
| 1037 | static SCM |
| 1038 | gdbscm_breakpoint_number (SCM self) |
| 1039 | { |
| 1040 | breakpoint_smob *bp_smob |
| 1041 | = bpscm_get_valid_breakpoint_smob_arg_unsafe (self, SCM_ARG1, FUNC_NAME); |
| 1042 | |
| 1043 | return scm_from_long (bp_smob->number); |
| 1044 | } |
| 1045 | \f |
| 1046 | /* Return TRUE if "stop" has been set for this breakpoint. |
| 1047 | |
| 1048 | This is the extension_language_ops.breakpoint_has_cond "method". */ |
| 1049 | |
| 1050 | int |
| 1051 | gdbscm_breakpoint_has_cond (const struct extension_language_defn *extlang, |
| 1052 | struct breakpoint *b) |
| 1053 | { |
| 1054 | breakpoint_smob *bp_smob = b->scm_bp_object; |
| 1055 | |
| 1056 | if (bp_smob == NULL) |
| 1057 | return 0; |
| 1058 | |
| 1059 | return gdbscm_is_procedure (bp_smob->stop); |
| 1060 | } |
| 1061 | |
| 1062 | /* Call the "stop" method in the breakpoint class. |
| 1063 | This must only be called if gdbscm_breakpoint_has_cond returns true. |
| 1064 | If the stop method returns #t, the inferior will be stopped at the |
| 1065 | breakpoint. Otherwise the inferior will be allowed to continue |
| 1066 | (assuming other conditions don't indicate "stop"). |
| 1067 | |
| 1068 | This is the extension_language_ops.breakpoint_cond_says_stop "method". */ |
| 1069 | |
| 1070 | enum ext_lang_bp_stop |
| 1071 | gdbscm_breakpoint_cond_says_stop |
| 1072 | (const struct extension_language_defn *extlang, struct breakpoint *b) |
| 1073 | { |
| 1074 | breakpoint_smob *bp_smob = b->scm_bp_object; |
| 1075 | SCM predicate_result; |
| 1076 | int stop; |
| 1077 | |
| 1078 | if (bp_smob == NULL) |
| 1079 | return EXT_LANG_BP_STOP_UNSET; |
| 1080 | if (!gdbscm_is_procedure (bp_smob->stop)) |
| 1081 | return EXT_LANG_BP_STOP_UNSET; |
| 1082 | |
| 1083 | stop = 1; |
| 1084 | |
| 1085 | predicate_result |
| 1086 | = gdbscm_safe_call_1 (bp_smob->stop, bp_smob->containing_scm, NULL); |
| 1087 | |
| 1088 | if (gdbscm_is_exception (predicate_result)) |
| 1089 | ; /* Exception already printed. */ |
| 1090 | /* If the "stop" function returns #f that means |
| 1091 | the Scheme breakpoint wants GDB to continue. */ |
| 1092 | else if (gdbscm_is_false (predicate_result)) |
| 1093 | stop = 0; |
| 1094 | |
| 1095 | return stop ? EXT_LANG_BP_STOP_YES : EXT_LANG_BP_STOP_NO; |
| 1096 | } |
| 1097 | \f |
| 1098 | /* Event callback functions. */ |
| 1099 | |
| 1100 | /* Callback that is used when a breakpoint is created. |
| 1101 | For breakpoints created by Scheme, i.e., gdbscm_create_breakpoint_x, finish |
| 1102 | object creation by connecting the Scheme wrapper to the gdb object. |
| 1103 | We ignore breakpoints created from gdb or python here, we create the |
| 1104 | Scheme wrapper for those when there's a need to, e.g., |
| 1105 | gdbscm_breakpoints. */ |
| 1106 | |
| 1107 | static void |
| 1108 | bpscm_breakpoint_created (struct breakpoint *bp) |
| 1109 | { |
| 1110 | SCM bp_scm; |
| 1111 | |
| 1112 | if (gdbscm_is_false (pending_breakpoint_scm)) |
| 1113 | return; |
| 1114 | |
| 1115 | /* Verify our caller error checked the user's request. */ |
| 1116 | gdb_assert (bpscm_want_scm_wrapper_p (bp, 1)); |
| 1117 | |
| 1118 | bp_scm = pending_breakpoint_scm; |
| 1119 | pending_breakpoint_scm = SCM_BOOL_F; |
| 1120 | |
| 1121 | bpscm_attach_scm_to_breakpoint (bp, bp_scm); |
| 1122 | } |
| 1123 | |
| 1124 | /* Callback that is used when a breakpoint is deleted. This will |
| 1125 | invalidate the corresponding Scheme object. */ |
| 1126 | |
| 1127 | static void |
| 1128 | bpscm_breakpoint_deleted (struct breakpoint *b) |
| 1129 | { |
| 1130 | int num = b->number; |
| 1131 | struct breakpoint *bp; |
| 1132 | |
| 1133 | /* TODO: Why the lookup? We have B. */ |
| 1134 | |
| 1135 | bp = get_breakpoint (num); |
| 1136 | if (bp) |
| 1137 | { |
| 1138 | breakpoint_smob *bp_smob = bp->scm_bp_object; |
| 1139 | |
| 1140 | if (bp_smob) |
| 1141 | { |
| 1142 | bp_smob->bp = NULL; |
| 1143 | bp_smob->number = -1; |
| 1144 | bp_smob->stop = SCM_BOOL_F; |
| 1145 | scm_gc_unprotect_object (bp_smob->containing_scm); |
| 1146 | } |
| 1147 | } |
| 1148 | } |
| 1149 | \f |
| 1150 | /* Initialize the Scheme breakpoint code. */ |
| 1151 | |
| 1152 | static const scheme_integer_constant breakpoint_integer_constants[] = |
| 1153 | { |
| 1154 | { "BP_NONE", bp_none }, |
| 1155 | { "BP_BREAKPOINT", bp_breakpoint }, |
| 1156 | { "BP_WATCHPOINT", bp_watchpoint }, |
| 1157 | { "BP_HARDWARE_WATCHPOINT", bp_hardware_watchpoint }, |
| 1158 | { "BP_READ_WATCHPOINT", bp_read_watchpoint }, |
| 1159 | { "BP_ACCESS_WATCHPOINT", bp_access_watchpoint }, |
| 1160 | |
| 1161 | { "WP_READ", hw_read }, |
| 1162 | { "WP_WRITE", hw_write }, |
| 1163 | { "WP_ACCESS", hw_access }, |
| 1164 | |
| 1165 | END_INTEGER_CONSTANTS |
| 1166 | }; |
| 1167 | |
| 1168 | static const scheme_function breakpoint_functions[] = |
| 1169 | { |
| 1170 | { "make-breakpoint", 1, 0, 1, as_a_scm_t_subr (gdbscm_make_breakpoint), |
| 1171 | "\ |
| 1172 | Create a GDB breakpoint object.\n\ |
| 1173 | \n\ |
| 1174 | Arguments:\n\ |
| 1175 | location [#:type <type>] [#:wp-class <wp-class>] [#:internal <bool>]\n\ |
| 1176 | Returns:\n\ |
| 1177 | <gdb:breakpoint object" }, |
| 1178 | |
| 1179 | { "register-breakpoint!", 1, 0, 0, |
| 1180 | as_a_scm_t_subr (gdbscm_register_breakpoint_x), |
| 1181 | "\ |
| 1182 | Register a <gdb:breakpoint> object with GDB." }, |
| 1183 | |
| 1184 | { "delete-breakpoint!", 1, 0, 0, as_a_scm_t_subr (gdbscm_delete_breakpoint_x), |
| 1185 | "\ |
| 1186 | Delete the breakpoint from GDB." }, |
| 1187 | |
| 1188 | { "breakpoints", 0, 0, 0, as_a_scm_t_subr (gdbscm_breakpoints), |
| 1189 | "\ |
| 1190 | Return a list of all GDB breakpoints.\n\ |
| 1191 | \n\ |
| 1192 | Arguments: none" }, |
| 1193 | |
| 1194 | { "breakpoint?", 1, 0, 0, as_a_scm_t_subr (gdbscm_breakpoint_p), |
| 1195 | "\ |
| 1196 | Return #t if the object is a <gdb:breakpoint> object." }, |
| 1197 | |
| 1198 | { "breakpoint-valid?", 1, 0, 0, as_a_scm_t_subr (gdbscm_breakpoint_valid_p), |
| 1199 | "\ |
| 1200 | Return #t if the breakpoint has not been deleted from GDB." }, |
| 1201 | |
| 1202 | { "breakpoint-number", 1, 0, 0, as_a_scm_t_subr (gdbscm_breakpoint_number), |
| 1203 | "\ |
| 1204 | Return the breakpoint's number." }, |
| 1205 | |
| 1206 | { "breakpoint-type", 1, 0, 0, as_a_scm_t_subr (gdbscm_breakpoint_type), |
| 1207 | "\ |
| 1208 | Return the type of the breakpoint." }, |
| 1209 | |
| 1210 | { "breakpoint-visible?", 1, 0, 0, as_a_scm_t_subr (gdbscm_breakpoint_visible), |
| 1211 | "\ |
| 1212 | Return #t if the breakpoint is visible to the user." }, |
| 1213 | |
| 1214 | { "breakpoint-location", 1, 0, 0, |
| 1215 | as_a_scm_t_subr (gdbscm_breakpoint_location), |
| 1216 | "\ |
| 1217 | Return the location of the breakpoint as specified by the user." }, |
| 1218 | |
| 1219 | { "breakpoint-expression", 1, 0, 0, |
| 1220 | as_a_scm_t_subr (gdbscm_breakpoint_expression), |
| 1221 | "\ |
| 1222 | Return the expression of the breakpoint as specified by the user.\n\ |
| 1223 | Valid for watchpoints only, returns #f for non-watchpoints." }, |
| 1224 | |
| 1225 | { "breakpoint-enabled?", 1, 0, 0, |
| 1226 | as_a_scm_t_subr (gdbscm_breakpoint_enabled_p), |
| 1227 | "\ |
| 1228 | Return #t if the breakpoint is enabled." }, |
| 1229 | |
| 1230 | { "set-breakpoint-enabled!", 2, 0, 0, |
| 1231 | as_a_scm_t_subr (gdbscm_set_breakpoint_enabled_x), |
| 1232 | "\ |
| 1233 | Set the breakpoint's enabled state.\n\ |
| 1234 | \n\ |
| 1235 | Arguments: <gdb:breakpoint> boolean" }, |
| 1236 | |
| 1237 | { "breakpoint-silent?", 1, 0, 0, as_a_scm_t_subr (gdbscm_breakpoint_silent_p), |
| 1238 | "\ |
| 1239 | Return #t if the breakpoint is silent." }, |
| 1240 | |
| 1241 | { "set-breakpoint-silent!", 2, 0, 0, |
| 1242 | as_a_scm_t_subr (gdbscm_set_breakpoint_silent_x), |
| 1243 | "\ |
| 1244 | Set the breakpoint's silent state.\n\ |
| 1245 | \n\ |
| 1246 | Arguments: <gdb:breakpoint> boolean" }, |
| 1247 | |
| 1248 | { "breakpoint-ignore-count", 1, 0, 0, |
| 1249 | as_a_scm_t_subr (gdbscm_breakpoint_ignore_count), |
| 1250 | "\ |
| 1251 | Return the breakpoint's \"ignore\" count." }, |
| 1252 | |
| 1253 | { "set-breakpoint-ignore-count!", 2, 0, 0, |
| 1254 | as_a_scm_t_subr (gdbscm_set_breakpoint_ignore_count_x), |
| 1255 | "\ |
| 1256 | Set the breakpoint's \"ignore\" count.\n\ |
| 1257 | \n\ |
| 1258 | Arguments: <gdb:breakpoint> count" }, |
| 1259 | |
| 1260 | { "breakpoint-hit-count", 1, 0, 0, |
| 1261 | as_a_scm_t_subr (gdbscm_breakpoint_hit_count), |
| 1262 | "\ |
| 1263 | Return the breakpoint's \"hit\" count." }, |
| 1264 | |
| 1265 | { "set-breakpoint-hit-count!", 2, 0, 0, |
| 1266 | as_a_scm_t_subr (gdbscm_set_breakpoint_hit_count_x), |
| 1267 | "\ |
| 1268 | Set the breakpoint's \"hit\" count. The value must be zero.\n\ |
| 1269 | \n\ |
| 1270 | Arguments: <gdb:breakpoint> 0" }, |
| 1271 | |
| 1272 | { "breakpoint-thread", 1, 0, 0, as_a_scm_t_subr (gdbscm_breakpoint_thread), |
| 1273 | "\ |
| 1274 | Return the breakpoint's global thread id or #f if there isn't one." }, |
| 1275 | |
| 1276 | { "set-breakpoint-thread!", 2, 0, 0, |
| 1277 | as_a_scm_t_subr (gdbscm_set_breakpoint_thread_x), |
| 1278 | "\ |
| 1279 | Set the global thread id for this breakpoint.\n\ |
| 1280 | \n\ |
| 1281 | Arguments: <gdb:breakpoint> global-thread-id" }, |
| 1282 | |
| 1283 | { "breakpoint-task", 1, 0, 0, as_a_scm_t_subr (gdbscm_breakpoint_task), |
| 1284 | "\ |
| 1285 | Return the breakpoint's Ada task-id or #f if there isn't one." }, |
| 1286 | |
| 1287 | { "set-breakpoint-task!", 2, 0, 0, |
| 1288 | as_a_scm_t_subr (gdbscm_set_breakpoint_task_x), |
| 1289 | "\ |
| 1290 | Set the breakpoint's Ada task-id.\n\ |
| 1291 | \n\ |
| 1292 | Arguments: <gdb:breakpoint> task-id" }, |
| 1293 | |
| 1294 | { "breakpoint-condition", 1, 0, 0, |
| 1295 | as_a_scm_t_subr (gdbscm_breakpoint_condition), |
| 1296 | "\ |
| 1297 | Return the breakpoint's condition as specified by the user.\n\ |
| 1298 | Return #f if there isn't one." }, |
| 1299 | |
| 1300 | { "set-breakpoint-condition!", 2, 0, 0, |
| 1301 | as_a_scm_t_subr (gdbscm_set_breakpoint_condition_x), |
| 1302 | "\ |
| 1303 | Set the breakpoint's condition.\n\ |
| 1304 | \n\ |
| 1305 | Arguments: <gdb:breakpoint> condition\n\ |
| 1306 | condition: a string" }, |
| 1307 | |
| 1308 | { "breakpoint-stop", 1, 0, 0, as_a_scm_t_subr (gdbscm_breakpoint_stop), |
| 1309 | "\ |
| 1310 | Return the breakpoint's stop predicate.\n\ |
| 1311 | Return #f if there isn't one." }, |
| 1312 | |
| 1313 | { "set-breakpoint-stop!", 2, 0, 0, |
| 1314 | as_a_scm_t_subr (gdbscm_set_breakpoint_stop_x), |
| 1315 | "\ |
| 1316 | Set the breakpoint's stop predicate.\n\ |
| 1317 | \n\ |
| 1318 | Arguments: <gdb:breakpoint> procedure\n\ |
| 1319 | procedure: A procedure of one argument, the breakpoint.\n\ |
| 1320 | Its result is true if program execution should stop." }, |
| 1321 | |
| 1322 | { "breakpoint-commands", 1, 0, 0, |
| 1323 | as_a_scm_t_subr (gdbscm_breakpoint_commands), |
| 1324 | "\ |
| 1325 | Return the breakpoint's commands." }, |
| 1326 | |
| 1327 | END_FUNCTIONS |
| 1328 | }; |
| 1329 | |
| 1330 | void |
| 1331 | gdbscm_initialize_breakpoints (void) |
| 1332 | { |
| 1333 | breakpoint_smob_tag |
| 1334 | = gdbscm_make_smob_type (breakpoint_smob_name, sizeof (breakpoint_smob)); |
| 1335 | scm_set_smob_free (breakpoint_smob_tag, bpscm_free_breakpoint_smob); |
| 1336 | scm_set_smob_print (breakpoint_smob_tag, bpscm_print_breakpoint_smob); |
| 1337 | |
| 1338 | observer_attach_breakpoint_created (bpscm_breakpoint_created); |
| 1339 | observer_attach_breakpoint_deleted (bpscm_breakpoint_deleted); |
| 1340 | |
| 1341 | gdbscm_define_integer_constants (breakpoint_integer_constants, 1); |
| 1342 | gdbscm_define_functions (breakpoint_functions, 1); |
| 1343 | |
| 1344 | type_keyword = scm_from_latin1_keyword ("type"); |
| 1345 | wp_class_keyword = scm_from_latin1_keyword ("wp-class"); |
| 1346 | internal_keyword = scm_from_latin1_keyword ("internal"); |
| 1347 | } |