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 ***************************************************************************/
25 #include <helper/log.h>
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_to_remove)
110 struct breakpoint *breakpoint = target->breakpoints;
111 struct breakpoint **breakpoint_p = &target->breakpoints;
116 if (breakpoint == breakpoint_to_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_to_remove)
251 struct watchpoint *watchpoint = target->watchpoints;
252 struct watchpoint **watchpoint_p = &target->watchpoints;
257 if (watchpoint == watchpoint_to_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);