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-rw-r--r--src/target/armv7m.c21
1 files changed, 20 insertions, 1 deletions
diff --git a/src/target/armv7m.c b/src/target/armv7m.c
index 6814fdbc..9740a28c 100644
--- a/src/target/armv7m.c
+++ b/src/target/armv7m.c
@@ -384,13 +384,23 @@ int armv7m_start_algorithm(struct target *target,
armv7m_set_core_reg(reg, reg_params[i].value);
}
- if (armv7m_algorithm_info->core_mode != ARM_MODE_ANY) {
+ if (armv7m_algorithm_info->core_mode != ARM_MODE_ANY &&
+ armv7m_algorithm_info->core_mode != core_mode) {
+
+ /* we cannot set ARM_MODE_HANDLER, so use ARM_MODE_THREAD instead */
+ if (armv7m_algorithm_info->core_mode == ARM_MODE_HANDLER) {
+ armv7m_algorithm_info->core_mode = ARM_MODE_THREAD;
+ LOG_INFO("ARM_MODE_HANDLER not currently supported, using ARM_MODE_THREAD instead");
+ }
+
LOG_DEBUG("setting core_mode: 0x%2.2x", armv7m_algorithm_info->core_mode);
buf_set_u32(armv7m->arm.core_cache->reg_list[ARMV7M_CONTROL].value,
0, 1, armv7m_algorithm_info->core_mode);
armv7m->arm.core_cache->reg_list[ARMV7M_CONTROL].dirty = 1;
armv7m->arm.core_cache->reg_list[ARMV7M_CONTROL].valid = 1;
}
+
+ /* save previous core mode */
armv7m_algorithm_info->core_mode = core_mode;
retval = target_resume(target, 0, entry_point, 1, 1);
@@ -486,6 +496,15 @@ int armv7m_wait_algorithm(struct target *target,
}
}
+ /* restore previous core mode */
+ if (armv7m_algorithm_info->core_mode != armv7m->arm.core_mode) {
+ LOG_DEBUG("restoring core_mode: 0x%2.2x", armv7m_algorithm_info->core_mode);
+ buf_set_u32(armv7m->arm.core_cache->reg_list[ARMV7M_CONTROL].value,
+ 0, 1, armv7m_algorithm_info->core_mode);
+ armv7m->arm.core_cache->reg_list[ARMV7M_CONTROL].dirty = 1;
+ armv7m->arm.core_cache->reg_list[ARMV7M_CONTROL].valid = 1;
+ }
+
armv7m->arm.core_mode = armv7m_algorithm_info->core_mode;
return retval;