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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"
};
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;
while (breakpoint)
{
if (breakpoint->address == address)
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;
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", breakpoint_type_strings[(*breakpoint_p)->type]);
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");
free((*breakpoint_p)->orig_instr);
free(*breakpoint_p);
*breakpoint_p = NULL;
return retval;
break;
default:
break;
}
}
LOG_DEBUG("added %s breakpoint at 0x%8.8x of length 0x%8.8x",
breakpoint_type_strings[(*breakpoint_p)->type],
(*breakpoint_p)->address, (*breakpoint_p)->length);
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);
(*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%8.8x found", address);
}
}
void breakpoint_clear_target(target_t *target)
{
breakpoint_t *breakpoint;
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;
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", watchpoint_rw_strings[(*watchpoint_p)->rw]);
free (*watchpoint_p);
*watchpoint_p = NULL;
return retval;
break;
case ERROR_TARGET_NOT_HALTED:
LOG_INFO("can't add watchpoint while target is running");
free (*watchpoint_p);
*watchpoint_p = NULL;
return retval;
break;
default:
LOG_ERROR("unknown error");
exit(-1);
break;
}
}
LOG_DEBUG("added %s watchpoint at 0x%8.8x of length 0x%8.8x",
watchpoint_rw_strings[(*watchpoint_p)->rw],
(*watchpoint_p)->address, (*watchpoint_p)->length);
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);
(*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%8.8x found", address);
}
}
void watchpoint_clear_target(target_t *target)
{
watchpoint_t *watchpoint;
while ((watchpoint = target->watchpoints)!=NULL)
{
watchpoint_free(target, watchpoint);
}
}
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