1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Copyright (C) ST-Ericsson SA 2011 *
6 * michel.jaouen@stericsson.com : smp minimum support *
8 * This program is free software; you can redistribute it and/or modify *
9 * it under the terms of the GNU General Public License as published by *
10 * the Free Software Foundation; either version 2 of the License, or *
11 * (at your option) any later version. *
13 * This program is distributed in the hope that it will be useful, *
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16 * GNU General Public License for more details. *
18 * You should have received a copy of the GNU General Public License *
19 * along with this program; if not, write to the *
20 * Free Software Foundation, Inc., *
21 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
22 ***************************************************************************/
28 #include <helper/log.h>
29 #include "breakpoints.h"
32 static char *breakpoint_type_strings[] =
38 static char *watchpoint_rw_strings[] =
45 // monotonic counter/id-number for breakpoints and watch points
46 static int bpwp_unique_id;
48 int breakpoint_add_internal(struct target *target, uint32_t address, uint32_t length, enum breakpoint_type type)
50 struct breakpoint *breakpoint = target->breakpoints;
51 struct breakpoint **breakpoint_p = &target->breakpoints;
60 if (breakpoint->address == address) {
61 /* FIXME don't assume "same address" means "same
62 * breakpoint" ... check all the parameters before
65 LOG_DEBUG("Duplicate Breakpoint address: 0x%08" PRIx32 " (BP %d)",
66 address, breakpoint->unique_id );
69 breakpoint_p = &breakpoint->next;
70 breakpoint = breakpoint->next;
73 (*breakpoint_p) = malloc(sizeof(struct breakpoint));
74 (*breakpoint_p)->address = address;
75 (*breakpoint_p)->asid = 0;
76 (*breakpoint_p)->length = length;
77 (*breakpoint_p)->type = type;
78 (*breakpoint_p)->set = 0;
79 (*breakpoint_p)->orig_instr = malloc(length);
80 (*breakpoint_p)->next = NULL;
81 (*breakpoint_p)->unique_id = bpwp_unique_id++;
83 retval = target_add_breakpoint(target, *breakpoint_p);
87 case ERROR_TARGET_RESOURCE_NOT_AVAILABLE:
88 reason = "resource not available";
90 case ERROR_TARGET_NOT_HALTED:
91 reason = "target running";
94 reason = "unknown reason";
96 LOG_ERROR("can't add breakpoint: %s", reason);
97 free((*breakpoint_p)->orig_instr);
103 LOG_DEBUG("added %s breakpoint at 0x%8.8" PRIx32 " of length 0x%8.8x, (BPID: %d)",
104 breakpoint_type_strings[(*breakpoint_p)->type],
105 (*breakpoint_p)->address, (*breakpoint_p)->length,
106 (*breakpoint_p)->unique_id );
111 int context_breakpoint_add_internal(struct target *target, uint32_t asid, uint32_t length, enum breakpoint_type type)
113 struct breakpoint *breakpoint = target->breakpoints;
114 struct breakpoint **breakpoint_p = &target->breakpoints;
122 if (breakpoint->asid == asid)
124 /* FIXME don't assume "same address" means "same
125 * breakpoint" ... check all the parameters before
128 LOG_DEBUG("Duplicate Breakpoint asid: 0x%08" PRIx32 " (BP %d)",
129 asid, breakpoint->unique_id );
132 breakpoint_p = &breakpoint->next;
133 breakpoint = breakpoint->next;
136 (*breakpoint_p) = malloc(sizeof(struct breakpoint));
137 (*breakpoint_p)->address = 0;
138 (*breakpoint_p)->asid = asid;
139 (*breakpoint_p)->length = length;
140 (*breakpoint_p)->type = type;
141 (*breakpoint_p)->set = 0;
142 (*breakpoint_p)->orig_instr = malloc(length);
143 (*breakpoint_p)->next = NULL;
144 (*breakpoint_p)->unique_id = bpwp_unique_id++;
145 retval = target_add_context_breakpoint(target, *breakpoint_p);
146 if (retval != ERROR_OK)
148 LOG_ERROR("could not add breakpoint");
149 free((*breakpoint_p)->orig_instr);
151 *breakpoint_p = NULL;
155 LOG_DEBUG("added %s Context breakpoint at 0x%8.8" PRIx32 " of length 0x%8.8x, (BPID: %d)",
156 breakpoint_type_strings[(*breakpoint_p)->type],
157 (*breakpoint_p)->asid, (*breakpoint_p)->length,
158 (*breakpoint_p)->unique_id );
163 int hybrid_breakpoint_add_internal(struct target *target, uint32_t address, uint32_t asid, uint32_t length, enum breakpoint_type type)
165 struct breakpoint *breakpoint = target->breakpoints;
166 struct breakpoint **breakpoint_p = &target->breakpoints;
173 if ((breakpoint->asid == asid) && (breakpoint->address == address)) {
174 /* FIXME don't assume "same address" means "same
175 * breakpoint" ... check all the parameters before
178 LOG_DEBUG("Duplicate Hybrid Breakpoint asid: 0x%08" PRIx32 " (BP %d)",
179 asid, breakpoint->unique_id );
182 else if ((breakpoint->address == address) && (breakpoint->asid == 0))
184 LOG_DEBUG("Duplicate Breakpoint IVA: 0x%08" PRIx32 " (BP %d)",
185 address, breakpoint->unique_id );
189 breakpoint_p = &breakpoint->next;
190 breakpoint = breakpoint->next;
192 (*breakpoint_p) = malloc(sizeof(struct breakpoint));
193 (*breakpoint_p)->address = address;
194 (*breakpoint_p)->asid = asid;
195 (*breakpoint_p)->length = length;
196 (*breakpoint_p)->type = type;
197 (*breakpoint_p)->set = 0;
198 (*breakpoint_p)->orig_instr = malloc(length);
199 (*breakpoint_p)->next = NULL;
200 (*breakpoint_p)->unique_id = bpwp_unique_id++;
203 retval = target_add_hybrid_breakpoint(target, *breakpoint_p);
204 if (retval != ERROR_OK)
206 LOG_ERROR("could not add breakpoint");
207 free((*breakpoint_p)->orig_instr);
209 *breakpoint_p = NULL;
212 LOG_DEBUG("added %s Hybrid breakpoint at address 0x%8.8" PRIx32 " of length 0x%8.8x, (BPID: %d)",
213 breakpoint_type_strings[(*breakpoint_p)->type],
214 (*breakpoint_p)->address, (*breakpoint_p)->length,
215 (*breakpoint_p)->unique_id );
222 int breakpoint_add(struct target *target, uint32_t address, uint32_t length, enum breakpoint_type type)
225 int retval = ERROR_OK;
228 struct target_list *head;
231 while(head != (struct target_list*)NULL)
234 retval = breakpoint_add_internal(curr, address,length, type);
235 if (retval != ERROR_OK) return retval;
241 return(breakpoint_add_internal(target, address, length, type));
244 int context_breakpoint_add(struct target *target, uint32_t asid, uint32_t length, enum breakpoint_type type)
247 int retval = ERROR_OK;
250 struct target_list *head;
253 while(head != (struct target_list*)NULL)
256 retval = context_breakpoint_add_internal(curr, asid,length, type);
257 if (retval != ERROR_OK) return retval;
263 return(context_breakpoint_add_internal(target, asid, length, type));
266 int hybrid_breakpoint_add(struct target *target, uint32_t address, uint32_t asid, uint32_t length, enum breakpoint_type type)
269 int retval = ERROR_OK;
272 struct target_list *head;
275 while(head != (struct target_list*)NULL)
278 retval = hybrid_breakpoint_add_internal(curr, address, asid, length, type);
279 if (retval != ERROR_OK) return retval;
285 return(hybrid_breakpoint_add_internal(target, address, asid, length, type));
289 /* free up a breakpoint */
290 static void breakpoint_free(struct target *target, struct breakpoint *breakpoint_to_remove)
292 struct breakpoint *breakpoint = target->breakpoints;
293 struct breakpoint **breakpoint_p = &target->breakpoints;
298 if (breakpoint == breakpoint_to_remove)
300 breakpoint_p = &breakpoint->next;
301 breakpoint = breakpoint->next;
304 if (breakpoint == NULL)
307 retval = target_remove_breakpoint(target, breakpoint);
309 LOG_DEBUG("free BPID: %d --> %d", breakpoint->unique_id, retval);
310 (*breakpoint_p) = breakpoint->next;
311 free(breakpoint->orig_instr);
315 void breakpoint_remove_internal(struct target *target, uint32_t address)
317 struct breakpoint *breakpoint = target->breakpoints;
321 if ((breakpoint->address == address) && (breakpoint->asid == 0))
323 else if ((breakpoint->address == 0) && (breakpoint->asid == address))
325 else if ((breakpoint->address == address) && (breakpoint->asid != 0))
327 breakpoint = breakpoint->next;
332 breakpoint_free(target, breakpoint);
336 LOG_ERROR("no breakpoint at address 0x%8.8" PRIx32 " found", address);
339 void breakpoint_remove(struct target *target, uint32_t address)
343 struct target_list *head;
346 while(head != (struct target_list*)NULL)
349 breakpoint_remove_internal(curr, address);
353 else breakpoint_remove_internal(target, address);
356 void breakpoint_clear_target_internal(struct target *target)
358 struct breakpoint *breakpoint;
360 LOG_DEBUG("Delete all breakpoints for target: %s",
361 target_name(target));
362 while ((breakpoint = target->breakpoints) != NULL)
364 breakpoint_free(target, breakpoint);
368 void breakpoint_clear_target(struct target *target)
372 struct target_list *head;
375 while(head != (struct target_list*)NULL)
378 breakpoint_clear_target_internal(curr);
382 else breakpoint_clear_target_internal(target);
387 struct breakpoint* breakpoint_find(struct target *target, uint32_t address)
389 struct breakpoint *breakpoint = target->breakpoints;
393 if (breakpoint->address == address)
395 breakpoint = breakpoint->next;
401 int watchpoint_add(struct target *target, uint32_t address, uint32_t length,
402 enum watchpoint_rw rw, uint32_t value, uint32_t mask)
404 struct watchpoint *watchpoint = target->watchpoints;
405 struct watchpoint **watchpoint_p = &target->watchpoints;
411 if (watchpoint->address == address) {
412 if (watchpoint->length != length
413 || watchpoint->value != value
414 || watchpoint->mask != mask
415 || watchpoint->rw != rw) {
416 LOG_ERROR("address 0x%8.8" PRIx32
417 "already has watchpoint %d",
418 address, watchpoint->unique_id);
422 /* ignore duplicate watchpoint */
425 watchpoint_p = &watchpoint->next;
426 watchpoint = watchpoint->next;
429 (*watchpoint_p) = calloc(1, sizeof(struct watchpoint));
430 (*watchpoint_p)->address = address;
431 (*watchpoint_p)->length = length;
432 (*watchpoint_p)->value = value;
433 (*watchpoint_p)->mask = mask;
434 (*watchpoint_p)->rw = rw;
435 (*watchpoint_p)->unique_id = bpwp_unique_id++;
437 retval = target_add_watchpoint(target, *watchpoint_p);
441 case ERROR_TARGET_RESOURCE_NOT_AVAILABLE:
442 reason = "resource not available";
444 case ERROR_TARGET_NOT_HALTED:
445 reason = "target running";
448 reason = "unrecognized error";
450 LOG_ERROR("can't add %s watchpoint at 0x%8.8" PRIx32 ", %s",
451 watchpoint_rw_strings[(*watchpoint_p)->rw],
453 free (*watchpoint_p);
454 *watchpoint_p = NULL;
458 LOG_DEBUG("added %s watchpoint at 0x%8.8" PRIx32
459 " of length 0x%8.8" PRIx32 " (WPID: %d)",
460 watchpoint_rw_strings[(*watchpoint_p)->rw],
461 (*watchpoint_p)->address,
462 (*watchpoint_p)->length,
463 (*watchpoint_p)->unique_id );
468 static void watchpoint_free(struct target *target, struct watchpoint *watchpoint_to_remove)
470 struct watchpoint *watchpoint = target->watchpoints;
471 struct watchpoint **watchpoint_p = &target->watchpoints;
476 if (watchpoint == watchpoint_to_remove)
478 watchpoint_p = &watchpoint->next;
479 watchpoint = watchpoint->next;
482 if (watchpoint == NULL)
484 retval = target_remove_watchpoint(target, watchpoint);
485 LOG_DEBUG("free WPID: %d --> %d", watchpoint->unique_id, retval);
486 (*watchpoint_p) = watchpoint->next;
490 void watchpoint_remove(struct target *target, uint32_t address)
492 struct watchpoint *watchpoint = target->watchpoints;
496 if (watchpoint->address == address)
498 watchpoint = watchpoint->next;
503 watchpoint_free(target, watchpoint);
507 LOG_ERROR("no watchpoint at address 0x%8.8" PRIx32 " found", address);
511 void watchpoint_clear_target(struct target *target)
513 struct watchpoint *watchpoint;
515 LOG_DEBUG("Delete all watchpoints for target: %s",
516 target_name(target));
517 while ((watchpoint = target->watchpoints) != NULL)
519 watchpoint_free(target, watchpoint);