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Add Breakpoint/Watchpoint unique ID to help debug hardware debug register leakage 

git-svn-id: svn://svn.berlios.de/openocd/trunk@2408 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
duane 2009-06-27 17:25:07 +00:00
parent f538794bf6
commit 78c0e873d2
5 changed files with 100 additions and 21 deletions
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20
src/target/arm7_9_common.c
View File

@ -58,6 +58,7 @@ int handle_arm7_9_etm_command(struct command_context_s *cmd_ctx, char *cmd, char
*/
static int arm7_9_clear_watchpoints(arm7_9_common_t *arm7_9)
{
LOG_DEBUG("-");
embeddedice_write_reg(&arm7_9->eice_cache->reg_list[EICE_W0_CONTROL_VALUE], 0x0);
embeddedice_write_reg(&arm7_9->eice_cache->reg_list[EICE_W1_CONTROL_VALUE], 0x0);
arm7_9->sw_breakpoints_added = 0;
@ -93,6 +94,10 @@ static void arm7_9_assign_wp(arm7_9_common_t *arm7_9, breakpoint_t *breakpoint)
{
LOG_ERROR("BUG: no hardware comparator available");
}
LOG_DEBUG("BPID: %d (0x%08" PRIx32 ") using hw wp: %d",
breakpoint->unique_id,
breakpoint->address,
breakpoint->set );
}
/**
@ -152,6 +157,8 @@ static int arm7_9_set_software_breakpoints(arm7_9_common_t *arm7_9)
LOG_ERROR("BUG: both watchpoints used, but wp_available >= 1");
return ERROR_FAIL;
}
LOG_DEBUG("SW BP using hw wp: %d",
arm7_9->sw_breakpoints_added );
return jtag_execute_queue();
}
@ -220,6 +227,10 @@ int arm7_9_set_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
arm7_9_common_t *arm7_9 = armv4_5->arch_info;
int retval = ERROR_OK;
LOG_DEBUG("BPID: %d, Address: 0x%08" PRIx32,
breakpoint->unique_id,
breakpoint->address );
if (target->state != TARGET_HALTED)
{
LOG_WARNING("target not halted");
@ -343,6 +354,10 @@ int arm7_9_unset_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
armv4_5_common_t *armv4_5 = target->arch_info;
arm7_9_common_t *arm7_9 = armv4_5->arch_info;
LOG_DEBUG("BPID: %d, Address: 0x%08" PRIx32,
breakpoint->unique_id,
breakpoint->address );
if (!breakpoint->set)
{
LOG_WARNING("breakpoint not set");
@ -351,6 +366,9 @@ int arm7_9_unset_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
if (breakpoint->type == BKPT_HARD)
{
LOG_DEBUG("BPID: %d Releasing hw wp: %d",
breakpoint->unique_id,
breakpoint->set );
if (breakpoint->set == 1)
{
embeddedice_set_reg(&arm7_9->eice_cache->reg_list[EICE_W0_CONTROL_VALUE], 0x0);
@ -1807,7 +1825,7 @@ int arm7_9_resume(struct target_s *target, int current, uint32_t address, int ha
{
if ((breakpoint = breakpoint_find(target, buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32))))
{
LOG_DEBUG("unset breakpoint at 0x%8.8" PRIx32 "", breakpoint->address);
LOG_DEBUG("unset breakpoint at 0x%8.8" PRIx32 " (id: %d)", breakpoint->address, breakpoint->unique_id );
if ((retval = arm7_9_unset_breakpoint(target, breakpoint)) != ERROR_OK)
{
return retval;

47
src/target/breakpoints.c
View File

@ -39,16 +39,25 @@ static char *watchpoint_rw_strings[] =
"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)
{
if (breakpoint->address == address)
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;
}
@ -60,20 +69,25 @@ int breakpoint_add(target_t *target, uint32_t address, uint32_t length, enum bre
(*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", breakpoint_type_strings[(*breakpoint_p)->type]);
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");
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;
@ -84,9 +98,10 @@ int breakpoint_add(target_t *target, uint32_t address, uint32_t length, enum bre
}
}
LOG_DEBUG("added %s breakpoint at 0x%8.8" PRIx32 " of length 0x%8.8x",
breakpoint_type_strings[(*breakpoint_p)->type],
(*breakpoint_p)->address, (*breakpoint_p)->length);
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;
}
@ -110,6 +125,7 @@ static void breakpoint_free(target_t *target, breakpoint_t *breakpoint_remove)
target_remove_breakpoint(target, breakpoint);
LOG_DEBUG("BPID: %d", breakpoint->unique_id );
(*breakpoint_p) = breakpoint->next;
free(breakpoint->orig_instr);
free(breakpoint);
@ -141,6 +157,7 @@ void breakpoint_remove(target_t *target, uint32_t 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);
@ -183,19 +200,23 @@ int watchpoint_add(target_t *target, uint32_t address, uint32_t length, enum wat
(*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", watchpoint_rw_strings[(*watchpoint_p)->rw]);
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");
LOG_INFO("can't add watchpoint while target is running (WPID: %d)",
(*watchpoint_p)->unique_id );
free (*watchpoint_p);
*watchpoint_p = NULL;
return retval;
@ -207,9 +228,11 @@ int watchpoint_add(target_t *target, uint32_t address, uint32_t length, enum wat
}
}
LOG_DEBUG("added %s watchpoint at 0x%8.8" PRIx32 " of length 0x%8.8x",
watchpoint_rw_strings[(*watchpoint_p)->rw],
(*watchpoint_p)->address, (*watchpoint_p)->length);
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;
}
@ -230,6 +253,7 @@ static void watchpoint_free(target_t *target, watchpoint_t *watchpoint_remove)
if (watchpoint == NULL)
return;
target_remove_watchpoint(target, watchpoint);
LOG_DEBUG("WPID: %d", watchpoint->unique_id );
(*watchpoint_p) = watchpoint->next;
free(watchpoint);
}
@ -260,6 +284,7 @@ void watchpoint_remove(target_t *target, uint32_t 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);

2
src/target/breakpoints.h
View File

@ -43,6 +43,7 @@ typedef struct breakpoint_s
int set;
uint8_t *orig_instr;
struct breakpoint_s *next;
int unique_id;
} breakpoint_t;
typedef struct watchpoint_s
@ -54,6 +55,7 @@ typedef struct watchpoint_s
enum watchpoint_rw rw;
int set;
struct watchpoint_s *next;
int unique_id;
} watchpoint_t;
extern void breakpoint_clear_target(struct target_s *target);

36
src/target/cortex_m3.c
View File

@ -664,7 +664,9 @@ int cortex_m3_resume(struct target_s *target, int current, uint32_t address, int
/* Single step past breakpoint at current address */
if ((breakpoint = breakpoint_find(target, resume_pc)))
{
LOG_DEBUG("unset breakpoint at 0x%8.8" PRIx32 "", breakpoint->address);
LOG_DEBUG("unset breakpoint at 0x%8.8" PRIx32 " (ID: %d)",
breakpoint->address,
breakpoint->unique_id );
cortex_m3_unset_breakpoint(target, breakpoint);
cortex_m3_single_step_core(target);
cortex_m3_set_breakpoint(target, breakpoint);
@ -897,7 +899,7 @@ int cortex_m3_set_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
if (breakpoint->set)
{
LOG_WARNING("breakpoint already set");
LOG_WARNING("breakpoint (BPID: %d) already set", breakpoint->unique_id);
return ERROR_OK;
}
@ -943,6 +945,13 @@ int cortex_m3_set_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
breakpoint->set = 0x11; /* Any nice value but 0 */
}
LOG_DEBUG("BPID: %d, Type: %d, Address: 0x%08" PRIx32 " Length: %d (set=%d)",
breakpoint->unique_id,
(int)(breakpoint->type),
breakpoint->address,
breakpoint->length,
breakpoint->set);
return ERROR_OK;
}
@ -960,6 +969,13 @@ int cortex_m3_unset_breakpoint(struct target_s *target, breakpoint_t *breakpoint
return ERROR_OK;
}
LOG_DEBUG("BPID: %d, Type: %d, Address: 0x%08" PRIx32 " Length: %d (set=%d)",
breakpoint->unique_id,
(int)(breakpoint->type),
breakpoint->address,
breakpoint->length,
breakpoint->set);
if (breakpoint->type == BKPT_HARD)
{
int fp_num = breakpoint->set - 1;
@ -1085,7 +1101,7 @@ int cortex_m3_set_watchpoint(struct target_s *target, watchpoint_t *watchpoint)
if (watchpoint->set)
{
LOG_WARNING("watchpoint already set");
LOG_WARNING("watchpoint (%d) already set", watchpoint->unique_id );
return ERROR_OK;
}
@ -1118,10 +1134,13 @@ int cortex_m3_set_watchpoint(struct target_s *target, watchpoint_t *watchpoint)
}
else
{
LOG_WARNING("Cannot watch data values"); /* Move this test to add_watchpoint */
/* Move this test to add_watchpoint */
LOG_WARNING("Cannot watch data values (id: %d)",
watchpoint->unique_id );
return ERROR_OK;
}
LOG_DEBUG("Watchpoint (ID: %d) address: 0x%08" PRIx32 " set=%d ",
watchpoint->unique_id, watchpoint->address, watchpoint->set );
return ERROR_OK;
}
@ -1136,10 +1155,13 @@ int cortex_m3_unset_watchpoint(struct target_s *target, watchpoint_t *watchpoint
if (!watchpoint->set)
{
LOG_WARNING("watchpoint not set");
LOG_WARNING("watchpoint (wpid: %d) not set", watchpoint->unique_id );
return ERROR_OK;
}
LOG_DEBUG("Watchpoint (ID: %d) address: 0x%08" PRIx32 " set=%d ",
watchpoint->unique_id, watchpoint->address,watchpoint->set );
dwt_num = watchpoint->set - 1;
if ((dwt_num < 0) || (dwt_num >= cortex_m3->dwt_num_comp))
@ -1179,6 +1201,7 @@ int cortex_m3_add_watchpoint(struct target_s *target, watchpoint_t *watchpoint)
}
cortex_m3->dwt_comp_available--;
LOG_DEBUG("dwt_comp_available: %d", cortex_m3->dwt_comp_available);
return ERROR_OK;
}
@ -1201,6 +1224,7 @@ int cortex_m3_remove_watchpoint(struct target_s *target, watchpoint_t *watchpoin
}
cortex_m3->dwt_comp_available++;
LOG_DEBUG("dwt_comp_available: %d", cortex_m3->dwt_comp_available);
return ERROR_OK;
}

16
src/target/mips_m4k.c
View File

@ -513,7 +513,8 @@ int mips_m4k_set_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
bp_num++;
if (bp_num >= mips32->num_inst_bpoints)
{
LOG_DEBUG("ERROR Can not find free FP Comparator");
LOG_DEBUG("ERROR Can not find free FP Comparator(bpid: %d)",
breakpoint->unique_id );
LOG_WARNING("ERROR Can not find free FP Comparator");
exit(-1);
}
@ -523,10 +524,13 @@ int mips_m4k_set_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
target_write_u32(target, comparator_list[bp_num].reg_address, comparator_list[bp_num].bp_value);
target_write_u32(target, comparator_list[bp_num].reg_address + 0x08, 0x00000000);
target_write_u32(target, comparator_list[bp_num].reg_address + 0x18, 1);
LOG_DEBUG("bp_num %i bp_value 0x%" PRIx32 "", bp_num, comparator_list[bp_num].bp_value);
LOG_DEBUG("bpid: %d, bp_num %i bp_value 0x%" PRIx32 "",
breakpoint->unique_id,
bp_num, comparator_list[bp_num].bp_value);
}
else if (breakpoint->type == BKPT_SOFT)
{
LOG_DEBUG("bpid: %d", breakpoint->unique_id );
if (breakpoint->length == 4)
{
uint32_t verify = 0xffffffff;
@ -598,16 +602,22 @@ int mips_m4k_unset_breakpoint(struct target_s *target, breakpoint_t *breakpoint)
int bp_num = breakpoint->set - 1;
if ((bp_num < 0) || (bp_num >= mips32->num_inst_bpoints))
{
LOG_DEBUG("Invalid FP Comparator number in breakpoint");
LOG_DEBUG("Invalid FP Comparator number in breakpoint (bpid: %d)",
breakpoint->unique_id);
return ERROR_OK;
}
LOG_DEBUG("bpid: %d - releasing hw: %d",
breakpoint->unique_id,
bp_num );
comparator_list[bp_num].used = 0;
comparator_list[bp_num].bp_value = 0;
target_write_u32(target, comparator_list[bp_num].reg_address + 0x18, 0);
}
else
{
/* restore original instruction (kept in target endianness) */
LOG_DEBUG("bpid: %d", breakpoint->unique_id);
if (breakpoint->length == 4)
{
uint32_t current_instr;