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, see <http://www.gnu.org/licenses/>. *
20 ***************************************************************************/
27 #include <helper/log.h>
28 #include "breakpoints.h"
31 static const char * const breakpoint_type_strings
[] = {
36 static const char * const watchpoint_rw_strings
[] = {
42 /* monotonic counter/id-number for breakpoints and watch points */
43 static int bpwp_unique_id
;
45 static int breakpoint_add_internal(struct target
*target
,
46 target_addr_t address
,
48 enum breakpoint_type type
)
50 struct breakpoint
*breakpoint
= target
->breakpoints
;
51 struct breakpoint
**breakpoint_p
= &target
->breakpoints
;
56 if (breakpoint
->address
== address
) {
57 /* FIXME don't assume "same address" means "same
58 * breakpoint" ... check all the parameters before
61 LOG_ERROR("Duplicate Breakpoint address: " TARGET_ADDR_FMT
" (BP %" PRIu32
")",
62 address
, breakpoint
->unique_id
);
63 return ERROR_TARGET_DUPLICATE_BREAKPOINT
;
65 breakpoint_p
= &breakpoint
->next
;
66 breakpoint
= breakpoint
->next
;
69 (*breakpoint_p
) = malloc(sizeof(struct breakpoint
));
70 (*breakpoint_p
)->address
= address
;
71 (*breakpoint_p
)->asid
= 0;
72 (*breakpoint_p
)->length
= length
;
73 (*breakpoint_p
)->type
= type
;
74 (*breakpoint_p
)->set
= 0;
75 (*breakpoint_p
)->orig_instr
= malloc(length
);
76 (*breakpoint_p
)->next
= NULL
;
77 (*breakpoint_p
)->unique_id
= bpwp_unique_id
++;
79 retval
= target_add_breakpoint(target
, *breakpoint_p
);
83 case ERROR_TARGET_RESOURCE_NOT_AVAILABLE
:
84 reason
= "resource not available";
86 case ERROR_TARGET_NOT_HALTED
:
87 reason
= "target running";
90 reason
= "unknown reason";
92 LOG_ERROR("can't add breakpoint: %s", reason
);
93 free((*breakpoint_p
)->orig_instr
);
99 LOG_DEBUG("[%d] added %s breakpoint at " TARGET_ADDR_FMT
100 " of length 0x%8.8x, (BPID: %" PRIu32
")",
102 breakpoint_type_strings
[(*breakpoint_p
)->type
],
103 (*breakpoint_p
)->address
, (*breakpoint_p
)->length
,
104 (*breakpoint_p
)->unique_id
);
109 static int context_breakpoint_add_internal(struct target
*target
,
112 enum breakpoint_type type
)
114 struct breakpoint
*breakpoint
= target
->breakpoints
;
115 struct breakpoint
**breakpoint_p
= &target
->breakpoints
;
119 if (breakpoint
->asid
== asid
) {
120 /* FIXME don't assume "same address" means "same
121 * breakpoint" ... check all the parameters before
124 LOG_ERROR("Duplicate Breakpoint asid: 0x%08" PRIx32
" (BP %" PRIu32
")",
125 asid
, breakpoint
->unique_id
);
126 return ERROR_TARGET_DUPLICATE_BREAKPOINT
;
128 breakpoint_p
= &breakpoint
->next
;
129 breakpoint
= breakpoint
->next
;
132 (*breakpoint_p
) = malloc(sizeof(struct breakpoint
));
133 (*breakpoint_p
)->address
= 0;
134 (*breakpoint_p
)->asid
= asid
;
135 (*breakpoint_p
)->length
= length
;
136 (*breakpoint_p
)->type
= type
;
137 (*breakpoint_p
)->set
= 0;
138 (*breakpoint_p
)->orig_instr
= malloc(length
);
139 (*breakpoint_p
)->next
= NULL
;
140 (*breakpoint_p
)->unique_id
= bpwp_unique_id
++;
141 retval
= target_add_context_breakpoint(target
, *breakpoint_p
);
142 if (retval
!= ERROR_OK
) {
143 LOG_ERROR("could not add breakpoint");
144 free((*breakpoint_p
)->orig_instr
);
146 *breakpoint_p
= NULL
;
150 LOG_DEBUG("added %s Context breakpoint at 0x%8.8" PRIx32
" of length 0x%8.8x, (BPID: %" PRIu32
")",
151 breakpoint_type_strings
[(*breakpoint_p
)->type
],
152 (*breakpoint_p
)->asid
, (*breakpoint_p
)->length
,
153 (*breakpoint_p
)->unique_id
);
158 static int hybrid_breakpoint_add_internal(struct target
*target
,
159 target_addr_t address
,
162 enum breakpoint_type type
)
164 struct breakpoint
*breakpoint
= target
->breakpoints
;
165 struct breakpoint
**breakpoint_p
= &target
->breakpoints
;
169 if ((breakpoint
->asid
== asid
) && (breakpoint
->address
== address
)) {
170 /* FIXME don't assume "same address" means "same
171 * breakpoint" ... check all the parameters before
174 LOG_ERROR("Duplicate Hybrid Breakpoint asid: 0x%08" PRIx32
" (BP %" PRIu32
")",
175 asid
, breakpoint
->unique_id
);
176 return ERROR_TARGET_DUPLICATE_BREAKPOINT
;
177 } else if ((breakpoint
->address
== address
) && (breakpoint
->asid
== 0)) {
178 LOG_ERROR("Duplicate Breakpoint IVA: " TARGET_ADDR_FMT
" (BP %" PRIu32
")",
179 address
, breakpoint
->unique_id
);
180 return ERROR_TARGET_DUPLICATE_BREAKPOINT
;
183 breakpoint_p
= &breakpoint
->next
;
184 breakpoint
= breakpoint
->next
;
186 (*breakpoint_p
) = malloc(sizeof(struct breakpoint
));
187 (*breakpoint_p
)->address
= address
;
188 (*breakpoint_p
)->asid
= asid
;
189 (*breakpoint_p
)->length
= length
;
190 (*breakpoint_p
)->type
= type
;
191 (*breakpoint_p
)->set
= 0;
192 (*breakpoint_p
)->orig_instr
= malloc(length
);
193 (*breakpoint_p
)->next
= NULL
;
194 (*breakpoint_p
)->unique_id
= bpwp_unique_id
++;
197 retval
= target_add_hybrid_breakpoint(target
, *breakpoint_p
);
198 if (retval
!= ERROR_OK
) {
199 LOG_ERROR("could not add breakpoint");
200 free((*breakpoint_p
)->orig_instr
);
202 *breakpoint_p
= NULL
;
206 "added %s Hybrid breakpoint at address " TARGET_ADDR_FMT
" of length 0x%8.8x, (BPID: %" PRIu32
")",
207 breakpoint_type_strings
[(*breakpoint_p
)->type
],
208 (*breakpoint_p
)->address
,
209 (*breakpoint_p
)->length
,
210 (*breakpoint_p
)->unique_id
);
215 int breakpoint_add(struct target
*target
,
216 target_addr_t address
,
218 enum breakpoint_type type
)
221 struct target_list
*head
;
223 if (type
== BKPT_SOFT
) {
224 head
= list_first_entry(target
->smp_targets
, struct target_list
, lh
);
225 return breakpoint_add_internal(head
->target
, address
, length
, type
);
228 foreach_smp_target(head
, target
->smp_targets
) {
229 struct target
*curr
= head
->target
;
230 int retval
= breakpoint_add_internal(curr
, address
, length
, type
);
231 if (retval
!= ERROR_OK
)
237 return breakpoint_add_internal(target
, address
, length
, type
);
241 int context_breakpoint_add(struct target
*target
,
244 enum breakpoint_type type
)
247 struct target_list
*head
;
249 foreach_smp_target(head
, target
->smp_targets
) {
250 struct target
*curr
= head
->target
;
251 int retval
= context_breakpoint_add_internal(curr
, asid
, length
, type
);
252 if (retval
!= ERROR_OK
)
258 return context_breakpoint_add_internal(target
, asid
, length
, type
);
262 int hybrid_breakpoint_add(struct target
*target
,
263 target_addr_t address
,
266 enum breakpoint_type type
)
269 struct target_list
*head
;
271 foreach_smp_target(head
, target
->smp_targets
) {
272 struct target
*curr
= head
->target
;
273 int retval
= hybrid_breakpoint_add_internal(curr
, address
, asid
, length
, type
);
274 if (retval
!= ERROR_OK
)
280 return hybrid_breakpoint_add_internal(target
, address
, asid
, length
, type
);
283 /* free up a breakpoint */
284 static void breakpoint_free(struct target
*target
, struct breakpoint
*breakpoint_to_remove
)
286 struct breakpoint
*breakpoint
= target
->breakpoints
;
287 struct breakpoint
**breakpoint_p
= &target
->breakpoints
;
291 if (breakpoint
== breakpoint_to_remove
)
293 breakpoint_p
= &breakpoint
->next
;
294 breakpoint
= breakpoint
->next
;
300 retval
= target_remove_breakpoint(target
, breakpoint
);
302 LOG_DEBUG("free BPID: %" PRIu32
" --> %d", breakpoint
->unique_id
, retval
);
303 (*breakpoint_p
) = breakpoint
->next
;
304 free(breakpoint
->orig_instr
);
308 static int breakpoint_remove_internal(struct target
*target
, target_addr_t address
)
310 struct breakpoint
*breakpoint
= target
->breakpoints
;
313 if ((breakpoint
->address
== address
) ||
314 (breakpoint
->address
== 0 && breakpoint
->asid
== address
))
316 breakpoint
= breakpoint
->next
;
320 breakpoint_free(target
, breakpoint
);
324 LOG_ERROR("no breakpoint at address " TARGET_ADDR_FMT
" found", address
);
329 static void breakpoint_remove_all_internal(struct target
*target
)
331 struct breakpoint
*breakpoint
= target
->breakpoints
;
334 struct breakpoint
*tmp
= breakpoint
;
335 breakpoint
= breakpoint
->next
;
336 breakpoint_free(target
, tmp
);
340 void breakpoint_remove(struct target
*target
, target_addr_t address
)
343 unsigned int num_breakpoints
= 0;
344 struct target_list
*head
;
346 foreach_smp_target(head
, target
->smp_targets
) {
347 struct target
*curr
= head
->target
;
348 num_breakpoints
+= breakpoint_remove_internal(curr
, address
);
350 if (!num_breakpoints
)
351 LOG_ERROR("no breakpoint at address " TARGET_ADDR_FMT
" found", address
);
353 breakpoint_remove_internal(target
, address
);
357 void breakpoint_remove_all(struct target
*target
)
360 struct target_list
*head
;
362 foreach_smp_target(head
, target
->smp_targets
) {
363 struct target
*curr
= head
->target
;
364 breakpoint_remove_all_internal(curr
);
367 breakpoint_remove_all_internal(target
);
371 static void breakpoint_clear_target_internal(struct target
*target
)
373 LOG_DEBUG("Delete all breakpoints for target: %s",
374 target_name(target
));
375 while (target
->breakpoints
)
376 breakpoint_free(target
, target
->breakpoints
);
379 void breakpoint_clear_target(struct target
*target
)
382 struct target_list
*head
;
384 foreach_smp_target(head
, target
->smp_targets
) {
385 struct target
*curr
= head
->target
;
386 breakpoint_clear_target_internal(curr
);
389 breakpoint_clear_target_internal(target
);
393 struct breakpoint
*breakpoint_find(struct target
*target
, target_addr_t address
)
395 struct breakpoint
*breakpoint
= target
->breakpoints
;
398 if (breakpoint
->address
== address
)
400 breakpoint
= breakpoint
->next
;
406 int watchpoint_add_internal(struct target
*target
, target_addr_t address
,
407 uint32_t length
, enum watchpoint_rw rw
, uint32_t value
, uint32_t mask
)
409 struct watchpoint
*watchpoint
= target
->watchpoints
;
410 struct watchpoint
**watchpoint_p
= &target
->watchpoints
;
415 if (watchpoint
->address
== address
) {
416 if (watchpoint
->length
!= length
417 || watchpoint
->value
!= value
418 || watchpoint
->mask
!= mask
419 || watchpoint
->rw
!= rw
) {
420 LOG_ERROR("address " TARGET_ADDR_FMT
421 " already has watchpoint %d",
422 address
, watchpoint
->unique_id
);
426 /* ignore duplicate watchpoint */
429 watchpoint_p
= &watchpoint
->next
;
430 watchpoint
= watchpoint
->next
;
433 (*watchpoint_p
) = calloc(1, sizeof(struct watchpoint
));
434 (*watchpoint_p
)->address
= address
;
435 (*watchpoint_p
)->length
= length
;
436 (*watchpoint_p
)->value
= value
;
437 (*watchpoint_p
)->mask
= mask
;
438 (*watchpoint_p
)->rw
= rw
;
439 (*watchpoint_p
)->unique_id
= bpwp_unique_id
++;
441 retval
= target_add_watchpoint(target
, *watchpoint_p
);
445 case ERROR_TARGET_RESOURCE_NOT_AVAILABLE
:
446 reason
= "resource not available";
448 case ERROR_TARGET_NOT_HALTED
:
449 reason
= "target running";
452 reason
= "unrecognized error";
454 LOG_ERROR("can't add %s watchpoint at " TARGET_ADDR_FMT
", %s",
455 watchpoint_rw_strings
[(*watchpoint_p
)->rw
],
458 *watchpoint_p
= NULL
;
462 LOG_DEBUG("[%d] added %s watchpoint at " TARGET_ADDR_FMT
463 " of length 0x%8.8" PRIx32
" (WPID: %d)",
465 watchpoint_rw_strings
[(*watchpoint_p
)->rw
],
466 (*watchpoint_p
)->address
,
467 (*watchpoint_p
)->length
,
468 (*watchpoint_p
)->unique_id
);
473 int watchpoint_add(struct target
*target
, target_addr_t address
,
474 uint32_t length
, enum watchpoint_rw rw
, uint32_t value
, uint32_t mask
)
477 struct target_list
*head
;
479 foreach_smp_target(head
, target
->smp_targets
) {
480 struct target
*curr
= head
->target
;
481 int retval
= watchpoint_add_internal(curr
, address
, length
, rw
, value
, mask
);
482 if (retval
!= ERROR_OK
)
488 return watchpoint_add_internal(target
, address
, length
, rw
, value
,
493 static void watchpoint_free(struct target
*target
, struct watchpoint
*watchpoint_to_remove
)
495 struct watchpoint
*watchpoint
= target
->watchpoints
;
496 struct watchpoint
**watchpoint_p
= &target
->watchpoints
;
500 if (watchpoint
== watchpoint_to_remove
)
502 watchpoint_p
= &watchpoint
->next
;
503 watchpoint
= watchpoint
->next
;
508 retval
= target_remove_watchpoint(target
, watchpoint
);
509 LOG_DEBUG("free WPID: %d --> %d", watchpoint
->unique_id
, retval
);
510 (*watchpoint_p
) = watchpoint
->next
;
514 int watchpoint_remove_internal(struct target
*target
, target_addr_t address
)
516 struct watchpoint
*watchpoint
= target
->watchpoints
;
519 if (watchpoint
->address
== address
)
521 watchpoint
= watchpoint
->next
;
525 watchpoint_free(target
, watchpoint
);
529 LOG_ERROR("no watchpoint at address " TARGET_ADDR_FMT
" found", address
);
534 void watchpoint_remove(struct target
*target
, target_addr_t address
)
537 unsigned int num_watchpoints
= 0;
538 struct target_list
*head
;
540 foreach_smp_target(head
, target
->smp_targets
) {
541 struct target
*curr
= head
->target
;
542 num_watchpoints
+= watchpoint_remove_internal(curr
, address
);
544 if (num_watchpoints
== 0)
545 LOG_ERROR("no watchpoint at address " TARGET_ADDR_FMT
" num_watchpoints", address
);
547 watchpoint_remove_internal(target
, address
);
551 void watchpoint_clear_target(struct target
*target
)
553 LOG_DEBUG("Delete all watchpoints for target: %s",
554 target_name(target
));
555 while (target
->watchpoints
)
556 watchpoint_free(target
, target
->watchpoints
);
559 int watchpoint_hit(struct target
*target
, enum watchpoint_rw
*rw
,
560 target_addr_t
*address
)
563 struct watchpoint
*hit_watchpoint
;
565 retval
= target_hit_watchpoint(target
, &hit_watchpoint
);
566 if (retval
!= ERROR_OK
)
569 *rw
= hit_watchpoint
->rw
;
570 *address
= hit_watchpoint
->address
;
572 LOG_DEBUG("Found hit watchpoint at " TARGET_ADDR_FMT
" (WPID: %d)",
573 hit_watchpoint
->address
,
574 hit_watchpoint
->unique_id
);
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