This patch covers the fact that cortex_m could be resumed externally by
Cross Trigger Interface or by direct write to DHSCR ...
To reproduce:
- halt the target
- then run the core through DHCSR (mww 0xe000edf0 0xa05f0001)
=> this resumes the core, but target state in OpenOCD remains HALTED.
Change-Id: Ifa1ae18645bfeb863acc78a039bbf04873fd78fe
Signed-off-by: Tarek BOCHKATI <tarek.bouchkati@gmail.com>
Reviewed-on: http://openocd.zylin.com/4817
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
+ /* Check that target is truly halted, since the target could be resumed externally */
+ if ((prev_target_state == TARGET_HALTED) && !(cortex_m->dcb_dhcsr & S_HALT)) {
+ /* registers are now invalid */
+ register_cache_invalidate(armv7m->arm.core_cache);
+
+ target->state = TARGET_RUNNING;
+ LOG_WARNING("%s: external resume detected", target_name(target));
+ target_call_event_callbacks(target, TARGET_EVENT_RESUMED);
+ retval = ERROR_OK;
+ }
+
/* Did we detect a failure condition that we cleared? */
if (detected_failure != ERROR_OK)
retval = detected_failure;
/* Did we detect a failure condition that we cleared? */
if (detected_failure != ERROR_OK)
retval = detected_failure;
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