0,0 → 1,168 |
/* |
* Copyright (c) 2008 Jiri Svoboda |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
|
/** @addtogroup debug |
* @{ |
*/ |
/** @file |
*/ |
|
#include <stdlib.h> |
#include <libadt/list.h> |
#include <assert.h> |
#include <futex.h> |
#include <async.h> |
#include <errno.h> |
|
#include "include/arch.h" |
#include "main.h" |
#include "breakpoint.h" |
|
static int last_bkpt_id = 0; |
|
/** List of breakpoints that are set on the application */ |
link_t bkpts; |
|
/** Pointer to currently active breakpoint or NULL if none */ |
breakpoint_t *active_bkpt = NULL; |
|
void breakpoint_init(void) |
{ |
list_initialize(&bkpts); |
} |
|
int breakpoint_add(uintptr_t addr) |
{ |
breakpoint_t *old_b, *b; |
int rc; |
|
old_b = breakpoint_find_by_addr(addr); |
if (old_b != NULL) { |
printf("Breakpoint already exists at address 0x%lx. ID:%d\n", |
old_b->addr, old_b->id); |
return EEXISTS; |
} |
|
b = malloc(sizeof(breakpoint_t)); |
if (!b) { |
printf("malloc failed\n"); |
return ENOMEM; |
} |
|
b->addr = addr; |
rc = arch_breakpoint_set(b); |
if (rc < 0) { |
printf("Failed to add breakpoint at 0x%x\n", addr); |
return rc; |
} |
|
b->id = ++last_bkpt_id; |
|
list_append(&b->link, &bkpts); |
|
printf("Added breakpoint %d at address 0x%lx\n", b->id, b->addr); |
|
return 0; |
} |
|
/** Get breakpoint struct by breakpoint id. |
* |
* @param bid Breakpoint id. |
* |
* @return Pointer to breakpoint struct or NULL if not found. |
*/ |
breakpoint_t *breakpoint_find_by_id(int bid) |
{ |
link_t *cur; |
breakpoint_t *b; |
|
for (cur = bkpts.next; cur != &bkpts; cur = cur->next) { |
b = list_get_instance(cur, breakpoint_t, link); |
if (b->id == bid) return b; |
} |
|
return NULL; |
} |
|
/** Get breakpoint struct by breakpoint id. |
* |
* @param bid Breakpoint id. |
* |
* @return Pointer to breakpoint struct or NULL if not found. |
*/ |
breakpoint_t *breakpoint_find_by_addr(uintptr_t addr) |
{ |
link_t *cur; |
breakpoint_t *b; |
|
for (cur = bkpts.next; cur != &bkpts; cur = cur->next) { |
b = list_get_instance(cur, breakpoint_t, link); |
if (b->addr == addr) return b; |
} |
|
return NULL; |
} |
|
void breakpoint_remove(int bid) |
{ |
breakpoint_t *b; |
int rc; |
|
b = breakpoint_find_by_id(bid); |
if (!b) { |
printf("No such breakpoint\n"); |
return; |
} |
|
rc = arch_breakpoint_remove(b); |
if (rc < 0) { |
printf("Failed to remove breakpoint %d\n", b->id); |
return; |
} |
|
list_remove(&b->link); |
free(b); |
} |
|
void breakpoint_list(void) |
{ |
breakpoint_t *b; |
link_t *cur; |
int count; |
|
count = 0; |
for (cur = bkpts.next; cur != &bkpts; cur = cur->next) { |
b = list_get_instance(cur, breakpoint_t, link); |
printf("%d at 0x%lx\n", b->id, b->addr); |
++count; |
} |
if (!count) printf("No breakpoints set\n"); |
} |
|
/** @} |
*/ |