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- /***************************************************************************
- * Copyright (C) 2005 by Dominic Rath *
- * Dominic.Rath@gmx.de *
- * *
- * This program is free software; you can redistribute it and/or modify *
- * it under the terms of the GNU General Public License as published by *
- * the Free Software Foundation; either version 2 of the License, or *
- * (at your option) any later version. *
- * *
- * This program is distributed in the hope that it will be useful, *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
- * GNU General Public License for more details. *
- * *
- * You should have received a copy of the GNU General Public License *
- * along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
- ***************************************************************************/
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
-
- #include "target.h"
- #include "log.h"
- #include "breakpoints.h"
-
-
- static char *breakpoint_type_strings[] =
- {
- "hardware",
- "software"
- };
-
- static char *watchpoint_rw_strings[] =
- {
- "read",
- "write",
- "access"
- };
-
- // monotonic counter/id-number for breakpoints and watch points
- static int bpwp_unique_id;
-
- int breakpoint_add(target_t *target, uint32_t address, uint32_t length, enum breakpoint_type type)
- {
- breakpoint_t *breakpoint = target->breakpoints;
- breakpoint_t **breakpoint_p = &target->breakpoints;
- int retval;
- int n;
-
- n = 0;
- while (breakpoint)
- {
- n++;
- if (breakpoint->address == address){
- LOG_DEBUG("Duplicate Breakpoint address: 0x%08" PRIx32 " (BP %d)",
- address, breakpoint->unique_id );
- return ERROR_OK;
- }
- breakpoint_p = &breakpoint->next;
- breakpoint = breakpoint->next;
- }
-
- (*breakpoint_p) = malloc(sizeof(breakpoint_t));
- (*breakpoint_p)->address = address;
- (*breakpoint_p)->length = length;
- (*breakpoint_p)->type = type;
- (*breakpoint_p)->set = 0;
- (*breakpoint_p)->orig_instr = malloc(length);
- (*breakpoint_p)->next = NULL;
- (*breakpoint_p)->unique_id = bpwp_unique_id++;
-
- if ((retval = target_add_breakpoint(target, *breakpoint_p)) != ERROR_OK)
- {
- switch (retval)
- {
- case ERROR_TARGET_RESOURCE_NOT_AVAILABLE:
- LOG_INFO("can't add %s breakpoint, resource not available (BPID=%d)",
- breakpoint_type_strings[(*breakpoint_p)->type],
- (*breakpoint_p)->unique_id );
-
- free((*breakpoint_p)->orig_instr);
- free(*breakpoint_p);
- *breakpoint_p = NULL;
- return retval;
- break;
- case ERROR_TARGET_NOT_HALTED:
- LOG_INFO("can't add breakpoint while target is running (BPID: %d)",
- (*breakpoint_p)->unique_id );
- free((*breakpoint_p)->orig_instr);
- free(*breakpoint_p);
- *breakpoint_p = NULL;
- return retval;
- break;
- default:
- break;
- }
- }
-
- LOG_DEBUG("added %s breakpoint at 0x%8.8" PRIx32 " of length 0x%8.8x, (BPID: %d)",
- breakpoint_type_strings[(*breakpoint_p)->type],
- (*breakpoint_p)->address, (*breakpoint_p)->length,
- (*breakpoint_p)->unique_id );
-
- return ERROR_OK;
- }
-
- /* free up a breakpoint */
- static void breakpoint_free(target_t *target, breakpoint_t *breakpoint_remove)
- {
- breakpoint_t *breakpoint = target->breakpoints;
- breakpoint_t **breakpoint_p = &target->breakpoints;
-
- while (breakpoint)
- {
- if (breakpoint == breakpoint_remove)
- break;
- breakpoint_p = &breakpoint->next;
- breakpoint = breakpoint->next;
- }
-
- if (breakpoint == NULL)
- return;
-
- target_remove_breakpoint(target, breakpoint);
-
- LOG_DEBUG("BPID: %d", breakpoint->unique_id );
- (*breakpoint_p) = breakpoint->next;
- free(breakpoint->orig_instr);
- free(breakpoint);
- }
-
- void breakpoint_remove(target_t *target, uint32_t address)
- {
- breakpoint_t *breakpoint = target->breakpoints;
- breakpoint_t **breakpoint_p = &target->breakpoints;
-
- while (breakpoint)
- {
- if (breakpoint->address == address)
- break;
- breakpoint_p = &breakpoint->next;
- breakpoint = breakpoint->next;
- }
-
- if (breakpoint)
- {
- breakpoint_free(target, breakpoint);
- }
- else
- {
- LOG_ERROR("no breakpoint at address 0x%8.8" PRIx32 " found", address);
- }
- }
-
- void breakpoint_clear_target(target_t *target)
- {
- breakpoint_t *breakpoint;
- LOG_DEBUG("Delete all breakpoints for target: %s", target_get_name( target ));
- while ((breakpoint = target->breakpoints) != NULL)
- {
- breakpoint_free(target, breakpoint);
- }
- }
-
- breakpoint_t* breakpoint_find(target_t *target, uint32_t address)
- {
- breakpoint_t *breakpoint = target->breakpoints;
-
- while (breakpoint)
- {
- if (breakpoint->address == address)
- return breakpoint;
- breakpoint = breakpoint->next;
- }
-
- return NULL;
- }
-
- int watchpoint_add(target_t *target, uint32_t address, uint32_t length, enum watchpoint_rw rw, uint32_t value, uint32_t mask)
- {
- watchpoint_t *watchpoint = target->watchpoints;
- watchpoint_t **watchpoint_p = &target->watchpoints;
- int retval;
-
- while (watchpoint)
- {
- if (watchpoint->address == address)
- return ERROR_OK;
- watchpoint_p = &watchpoint->next;
- watchpoint = watchpoint->next;
- }
-
- (*watchpoint_p) = malloc(sizeof(watchpoint_t));
- (*watchpoint_p)->address = address;
- (*watchpoint_p)->length = length;
- (*watchpoint_p)->value = value;
- (*watchpoint_p)->mask = mask;
- (*watchpoint_p)->rw = rw;
- (*watchpoint_p)->set = 0;
- (*watchpoint_p)->next = NULL;
- (*watchpoint_p)->unique_id = bpwp_unique_id++;
-
- if ((retval = target_add_watchpoint(target, *watchpoint_p)) != ERROR_OK)
- {
- switch (retval)
- {
- case ERROR_TARGET_RESOURCE_NOT_AVAILABLE:
- LOG_INFO("can't add %s watchpoint, resource not available (WPID: %d)",
- watchpoint_rw_strings[(*watchpoint_p)->rw],
- (*watchpoint_p)->unique_id );
- free (*watchpoint_p);
- *watchpoint_p = NULL;
- return retval;
- break;
- case ERROR_TARGET_NOT_HALTED:
- LOG_INFO("can't add watchpoint while target is running (WPID: %d)",
- (*watchpoint_p)->unique_id );
- free (*watchpoint_p);
- *watchpoint_p = NULL;
- return retval;
- break;
- default:
- LOG_ERROR("unknown error");
- exit(-1);
- break;
- }
- }
-
- LOG_DEBUG("added %s watchpoint at 0x%8.8" PRIx32 " of length 0x%8.8x (WPID: %d)",
- watchpoint_rw_strings[(*watchpoint_p)->rw],
- (*watchpoint_p)->address,
- (*watchpoint_p)->length,
- (*watchpoint_p)->unique_id );
-
- return ERROR_OK;
- }
-
- static void watchpoint_free(target_t *target, watchpoint_t *watchpoint_remove)
- {
- watchpoint_t *watchpoint = target->watchpoints;
- watchpoint_t **watchpoint_p = &target->watchpoints;
-
- while (watchpoint)
- {
- if (watchpoint == watchpoint_remove)
- break;
- watchpoint_p = &watchpoint->next;
- watchpoint = watchpoint->next;
- }
-
- if (watchpoint == NULL)
- return;
- target_remove_watchpoint(target, watchpoint);
- LOG_DEBUG("WPID: %d", watchpoint->unique_id );
- (*watchpoint_p) = watchpoint->next;
- free(watchpoint);
- }
-
- void watchpoint_remove(target_t *target, uint32_t address)
- {
- watchpoint_t *watchpoint = target->watchpoints;
- watchpoint_t **watchpoint_p = &target->watchpoints;
-
- while (watchpoint)
- {
- if (watchpoint->address == address)
- break;
- watchpoint_p = &watchpoint->next;
- watchpoint = watchpoint->next;
- }
-
- if (watchpoint)
- {
- watchpoint_free(target, watchpoint);
- }
- else
- {
- LOG_ERROR("no watchpoint at address 0x%8.8" PRIx32 " found", address);
- }
- }
-
- void watchpoint_clear_target(target_t *target)
- {
- watchpoint_t *watchpoint;
- LOG_DEBUG("Delete all watchpoints for target: %s", target_get_name( target ));
- while ((watchpoint = target->watchpoints) != NULL)
- {
- watchpoint_free(target, watchpoint);
- }
- }
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