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target, breakpoints: improve error handling 

handle_bp_command_set() showed the error message
"Failure setting breakpoint, the same address(IVA) is already used"
on any error returned from (xxx_)breakpoint_add().
Paradoxically breakpoint_add() returned ERROR_OK if it detected
duplicated bp address.
context_breakpoint_add() and hybrid_breakpoint_add() returned -1
instead of OpenOCD compatible error if they detected duplicity.

Introduce ERROR_TARGET_DUPLICATE_BREAKPOINT
Unify error handling to LOG_ERROR() any error in (xxx_)breakpoint_add()
Remove misleading error messages from handle_bp_command_set()
handle_bp_command_set() returns error if the target does not implement
add_context_breakpoint or add_hybrid_breakpoint.

Change-Id: If17dfad1756d82a77028ebdc4b305f9c8e1365ba
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: http://openocd.zylin.com/4871
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
reverse-resume-order
Tomas Vanek 2019-01-24 14:33:16 +01:00 committed by Matthias Welwarsky
parent 1c22f5b7de
commit fd8a3c9516
3 changed files with 19 additions and 25 deletions
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16
src/target/breakpoints.c
View File

@ -60,9 +60,9 @@ int breakpoint_add_internal(struct target *target,
* breakpoint" ... check all the parameters before
* succeeding.
*/
LOG_DEBUG("Duplicate Breakpoint address: " TARGET_ADDR_FMT " (BP %" PRIu32 ")",
LOG_ERROR("Duplicate Breakpoint address: " TARGET_ADDR_FMT " (BP %" PRIu32 ")",
address, breakpoint->unique_id);
return ERROR_OK;
return ERROR_TARGET_DUPLICATE_BREAKPOINT;
}
breakpoint_p = &breakpoint->next;
breakpoint = breakpoint->next;
@ -124,9 +124,9 @@ int context_breakpoint_add_internal(struct target *target,
* breakpoint" ... check all the parameters before
* succeeding.
*/
LOG_DEBUG("Duplicate Breakpoint asid: 0x%08" PRIx32 " (BP %" PRIu32 ")",
LOG_ERROR("Duplicate Breakpoint asid: 0x%08" PRIx32 " (BP %" PRIu32 ")",
asid, breakpoint->unique_id);
return -1;
return ERROR_TARGET_DUPLICATE_BREAKPOINT;
}
breakpoint_p = &breakpoint->next;
breakpoint = breakpoint->next;
@ -176,13 +176,13 @@ int hybrid_breakpoint_add_internal(struct target *target,
* breakpoint" ... check all the parameters before
* succeeding.
*/
LOG_DEBUG("Duplicate Hybrid Breakpoint asid: 0x%08" PRIx32 " (BP %" PRIu32 ")",
LOG_ERROR("Duplicate Hybrid Breakpoint asid: 0x%08" PRIx32 " (BP %" PRIu32 ")",
asid, breakpoint->unique_id);
return -1;
return ERROR_TARGET_DUPLICATE_BREAKPOINT;
} else if ((breakpoint->address == address) && (breakpoint->asid == 0)) {
LOG_DEBUG("Duplicate Breakpoint IVA: " TARGET_ADDR_FMT " (BP %" PRIu32 ")",
LOG_ERROR("Duplicate Breakpoint IVA: " TARGET_ADDR_FMT " (BP %" PRIu32 ")",
address, breakpoint->unique_id);
return -1;
return ERROR_TARGET_DUPLICATE_BREAKPOINT;
}
breakpoint_p = &breakpoint->next;

27
src/target/target.c
View File

@ -3719,38 +3719,31 @@ static int handle_bp_command_set(struct command_context *cmd_ctx,
if (asid == 0) {
retval = breakpoint_add(target, addr, length, hw);
/* error is always logged in breakpoint_add(), do not print it again */
if (ERROR_OK == retval)
command_print(cmd_ctx, "breakpoint set at " TARGET_ADDR_FMT "", addr);
else {
LOG_ERROR("Failure setting breakpoint, the same address(IVA) is already used");
return retval;
}
} else if (addr == 0) {
if (target->type->add_context_breakpoint == NULL) {
LOG_WARNING("Context breakpoint not available");
return ERROR_OK;
LOG_ERROR("Context breakpoint not available");
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
}
retval = context_breakpoint_add(target, asid, length, hw);
/* error is always logged in context_breakpoint_add(), do not print it again */
if (ERROR_OK == retval)
command_print(cmd_ctx, "Context breakpoint set at 0x%8.8" PRIx32 "", asid);
else {
LOG_ERROR("Failure setting breakpoint, the same address(CONTEXTID) is already used");
return retval;
}
} else {
if (target->type->add_hybrid_breakpoint == NULL) {
LOG_WARNING("Hybrid breakpoint not available");
return ERROR_OK;
LOG_ERROR("Hybrid breakpoint not available");
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
}
retval = hybrid_breakpoint_add(target, addr, asid, length, hw);
/* error is always logged in hybrid_breakpoint_add(), do not print it again */
if (ERROR_OK == retval)
command_print(cmd_ctx, "Hybrid breakpoint set at 0x%8.8" PRIx32 "", asid);
else {
LOG_ERROR("Failure setting breakpoint, the same address is already used");
return retval;
}
}
return ERROR_OK;
return retval;
}
COMMAND_HANDLER(handle_bp_command)

1
src/target/target.h
View File

@ -725,6 +725,7 @@ void target_handle_event(struct target *t, enum target_event e);
#define ERROR_TARGET_TRANSLATION_FAULT (-309)
#define ERROR_TARGET_NOT_RUNNING (-310)
#define ERROR_TARGET_NOT_EXAMINED (-311)
#define ERROR_TARGET_DUPLICATE_BREAKPOINT (-312)
extern bool get_target_reset_nag(void);