Leverages the existing work that added profiling via DWT_PCSR.
hla_target doesn't have direct access to the mem_ap for doing a bulk
repeated read, but simply reading the DWT_PCSR register repeatedly is
still ~2 order of magnitude faster than halt/resume.
Change-Id: Ibe451aa95143694398370fdad6939cfb6191d56f
Signed-off-by: Karl Palsson <karlp@tweak.net.au>
Reviewed-on: http://openocd.zylin.com/4220
Tested-by: jenkins
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
-static int cortex_m_profiling(struct target *target, uint32_t *samples,
+int cortex_m_profiling(struct target *target, uint32_t *samples,
uint32_t max_num_samples, uint32_t *num_samples, uint32_t seconds)
{
struct timeval timeout, now;
uint32_t max_num_samples, uint32_t *num_samples, uint32_t seconds)
{
struct timeval timeout, now;
for (;;) {
if (use_pcsr) {
for (;;) {
if (use_pcsr) {
- uint32_t read_count = max_num_samples - sample_count;
- if (read_count > 1024)
- read_count = 1024;
- retval = mem_ap_read_buf_noincr(armv7m->debug_ap,
+ if (armv7m && armv7m->debug_ap) {
+ uint32_t read_count = max_num_samples - sample_count;
+ if (read_count > 1024)
+ read_count = 1024;
+
+ retval = mem_ap_read_buf_noincr(armv7m->debug_ap,
(void *)&samples[sample_count],
4, read_count, DWT_PCSR);
(void *)&samples[sample_count],
4, read_count, DWT_PCSR);
- sample_count += read_count;
+ sample_count += read_count;
+ } else {
+ target_read_u32(target, DWT_PCSR, &samples[sample_count++]);
+ }
} else {
target_poll(target);
if (target->state == TARGET_HALTED) {
} else {
target_poll(target);
if (target->state == TARGET_HALTED) {
void cortex_m_enable_watchpoints(struct target *target);
void cortex_m_dwt_setup(struct cortex_m_common *cm, struct target *target);
void cortex_m_deinit_target(struct target *target);
void cortex_m_enable_watchpoints(struct target *target);
void cortex_m_dwt_setup(struct cortex_m_common *cm, struct target *target);
void cortex_m_deinit_target(struct target *target);
+int cortex_m_profiling(struct target *target, uint32_t *samples,
+ uint32_t max_num_samples, uint32_t *num_samples, uint32_t seconds);
#endif /* OPENOCD_TARGET_CORTEX_M_H */
#endif /* OPENOCD_TARGET_CORTEX_M_H */
.remove_breakpoint = cortex_m_remove_breakpoint,
.add_watchpoint = cortex_m_add_watchpoint,
.remove_watchpoint = cortex_m_remove_watchpoint,
.remove_breakpoint = cortex_m_remove_breakpoint,
.add_watchpoint = cortex_m_add_watchpoint,
.remove_watchpoint = cortex_m_remove_watchpoint,
+ .profiling = cortex_m_profiling,
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