1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
26 #include "breakpoints.h"
29 static char *breakpoint_type_strings
[] =
35 static char *watchpoint_rw_strings
[] =
42 // monotonic counter/id-number for breakpoints and watch points
43 static int bpwp_unique_id
;
45 int breakpoint_add(struct target
*target
, uint32_t address
, uint32_t length
, enum breakpoint_type type
)
47 struct breakpoint
*breakpoint
= target
->breakpoints
;
48 struct breakpoint
**breakpoint_p
= &target
->breakpoints
;
57 if (breakpoint
->address
== address
) {
58 /* FIXME don't assume "same address" means "same
59 * breakpoint" ... check all the parameters before
62 LOG_DEBUG("Duplicate Breakpoint address: 0x%08" PRIx32
" (BP %d)",
63 address
, breakpoint
->unique_id
);
66 breakpoint_p
= &breakpoint
->next
;
67 breakpoint
= breakpoint
->next
;
70 (*breakpoint_p
) = malloc(sizeof(struct breakpoint
));
71 (*breakpoint_p
)->address
= address
;
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("added %s breakpoint at 0x%8.8" PRIx32
" of length 0x%8.8x, (BPID: %d)",
100 breakpoint_type_strings
[(*breakpoint_p
)->type
],
101 (*breakpoint_p
)->address
, (*breakpoint_p
)->length
,
102 (*breakpoint_p
)->unique_id
);
107 /* free up a breakpoint */
108 static void breakpoint_free(struct target
*target
, struct breakpoint
*breakpoint_remove
)
110 struct breakpoint
*breakpoint
= target
->breakpoints
;
111 struct breakpoint
**breakpoint_p
= &target
->breakpoints
;
116 if (breakpoint
== breakpoint_remove
)
118 breakpoint_p
= &breakpoint
->next
;
119 breakpoint
= breakpoint
->next
;
122 if (breakpoint
== NULL
)
125 retval
= target_remove_breakpoint(target
, breakpoint
);
127 LOG_DEBUG("free BPID: %d --> %d", breakpoint
->unique_id
, retval
);
128 (*breakpoint_p
) = breakpoint
->next
;
129 free(breakpoint
->orig_instr
);
133 void breakpoint_remove(struct target
*target
, uint32_t address
)
135 struct breakpoint
*breakpoint
= target
->breakpoints
;
136 struct breakpoint
**breakpoint_p
= &target
->breakpoints
;
140 if (breakpoint
->address
== address
)
142 breakpoint_p
= &breakpoint
->next
;
143 breakpoint
= breakpoint
->next
;
148 breakpoint_free(target
, breakpoint
);
152 LOG_ERROR("no breakpoint at address 0x%8.8" PRIx32
" found", address
);
156 void breakpoint_clear_target(struct target
*target
)
158 struct breakpoint
*breakpoint
;
160 LOG_DEBUG("Delete all breakpoints for target: %s",
161 target_name(target
));
162 while ((breakpoint
= target
->breakpoints
) != NULL
)
164 breakpoint_free(target
, breakpoint
);
168 struct breakpoint
* breakpoint_find(struct target
*target
, uint32_t address
)
170 struct breakpoint
*breakpoint
= target
->breakpoints
;
174 if (breakpoint
->address
== address
)
176 breakpoint
= breakpoint
->next
;
182 int watchpoint_add(struct target
*target
, uint32_t address
, uint32_t length
,
183 enum watchpoint_rw rw
, uint32_t value
, uint32_t mask
)
185 struct watchpoint
*watchpoint
= target
->watchpoints
;
186 struct watchpoint
**watchpoint_p
= &target
->watchpoints
;
192 if (watchpoint
->address
== address
) {
193 if (watchpoint
->length
!= length
194 || watchpoint
->value
!= value
195 || watchpoint
->mask
!= mask
196 || watchpoint
->rw
!= rw
) {
197 LOG_ERROR("address 0x%8.8" PRIx32
198 "already has watchpoint %d",
199 address
, watchpoint
->unique_id
);
203 /* ignore duplicate watchpoint */
206 watchpoint_p
= &watchpoint
->next
;
207 watchpoint
= watchpoint
->next
;
210 (*watchpoint_p
) = calloc(1, sizeof(struct watchpoint
));
211 (*watchpoint_p
)->address
= address
;
212 (*watchpoint_p
)->length
= length
;
213 (*watchpoint_p
)->value
= value
;
214 (*watchpoint_p
)->mask
= mask
;
215 (*watchpoint_p
)->rw
= rw
;
216 (*watchpoint_p
)->unique_id
= bpwp_unique_id
++;
218 retval
= target_add_watchpoint(target
, *watchpoint_p
);
222 case ERROR_TARGET_RESOURCE_NOT_AVAILABLE
:
223 reason
= "resource not available";
225 case ERROR_TARGET_NOT_HALTED
:
226 reason
= "target running";
229 reason
= "unrecognized error";
231 LOG_ERROR("can't add %s watchpoint at 0x%8.8" PRIx32
", %s",
232 watchpoint_rw_strings
[(*watchpoint_p
)->rw
],
234 free (*watchpoint_p
);
235 *watchpoint_p
= NULL
;
239 LOG_DEBUG("added %s watchpoint at 0x%8.8" PRIx32
240 " of length 0x%8.8" PRIx32
" (WPID: %d)",
241 watchpoint_rw_strings
[(*watchpoint_p
)->rw
],
242 (*watchpoint_p
)->address
,
243 (*watchpoint_p
)->length
,
244 (*watchpoint_p
)->unique_id
);
249 static void watchpoint_free(struct target
*target
, struct watchpoint
*watchpoint_remove
)
251 struct watchpoint
*watchpoint
= target
->watchpoints
;
252 struct watchpoint
**watchpoint_p
= &target
->watchpoints
;
257 if (watchpoint
== watchpoint_remove
)
259 watchpoint_p
= &watchpoint
->next
;
260 watchpoint
= watchpoint
->next
;
263 if (watchpoint
== NULL
)
265 retval
= target_remove_watchpoint(target
, watchpoint
);
266 LOG_DEBUG("free WPID: %d --> %d", watchpoint
->unique_id
, retval
);
267 (*watchpoint_p
) = watchpoint
->next
;
271 void watchpoint_remove(struct target
*target
, uint32_t address
)
273 struct watchpoint
*watchpoint
= target
->watchpoints
;
274 struct watchpoint
**watchpoint_p
= &target
->watchpoints
;
278 if (watchpoint
->address
== address
)
280 watchpoint_p
= &watchpoint
->next
;
281 watchpoint
= watchpoint
->next
;
286 watchpoint_free(target
, watchpoint
);
290 LOG_ERROR("no watchpoint at address 0x%8.8" PRIx32
" found", address
);
294 void watchpoint_clear_target(struct target
*target
)
296 struct watchpoint
*watchpoint
;
298 LOG_DEBUG("Delete all watchpoints for target: %s",
299 target_name(target
));
300 while ((watchpoint
= target
->watchpoints
) != NULL
)
302 watchpoint_free(target
, watchpoint
);
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