mirror of
https://github.com/espressif/esp-idf
synced 2025-03-09 09:09:10 -04:00
gcov: dump in a special thread
This commit is contained in:
Erhan Kurubas
parent
81956c63c8
commit
93259b9508
@ -22,6 +22,7 @@
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#include "soc/cpu.h"
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#include "soc/timer_periph.h"
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#include "esp_app_trace.h"
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#include "esp_freertos_hooks.h"
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#include "esp_private/dbg_stubs.h"
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#include "hal/wdt_hal.h"
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#if CONFIG_IDF_TARGET_ESP32
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@ -37,93 +38,71 @@
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#define LOG_LOCAL_LEVEL CONFIG_LOG_DEFAULT_LEVEL
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#include "esp_log.h"
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const static char *TAG = "esp_gcov_rtio";
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static volatile bool s_create_gcov_task = false;
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static volatile bool s_gcov_task_running = false;
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extern void __gcov_dump(void);
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extern void __gcov_reset(void);
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static struct syscall_stub_table s_gcov_stub_table;
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static int gcov_stub_lock_try_acquire_recursive(_lock_t *lock)
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void gcov_dump_task(void *pvParameter)
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{
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if (*lock && uxSemaphoreGetCount((xSemaphoreHandle)(*lock)) == 0) {
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// we can do nothing here, gcov dump is initiated with some resource locked
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// which is also used by gcov functions
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ESP_EARLY_LOGE(TAG, "Lock 0x%x is busy during GCOV dump! System state can be inconsistent after dump!", lock);
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}
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return pdTRUE;
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}
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int dump_result = 0;
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bool *running = (bool *)pvParameter;
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static void gcov_stub_lock_acquire_recursive(_lock_t *lock)
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{
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gcov_stub_lock_try_acquire_recursive(lock);
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}
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static void gcov_stub_lock_release_recursive(_lock_t *lock)
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{
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}
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static int esp_dbg_stub_gcov_dump_do(void)
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{
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int ret = ESP_OK;
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FILE* old_stderr = stderr;
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FILE* old_stdout = stdout;
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static struct syscall_stub_table *old_tables[portNUM_PROCESSORS];
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old_tables[0] = syscall_table_ptr_pro;
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#if portNUM_PROCESSORS > 1
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old_tables[1] = syscall_table_ptr_app;
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#endif
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ESP_EARLY_LOGV(TAG, "Alloc apptrace down buf %d bytes", ESP_GCOV_DOWN_BUF_SIZE);
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void *down_buf = malloc(ESP_GCOV_DOWN_BUF_SIZE);
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if (down_buf == NULL) {
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ESP_EARLY_LOGE(TAG, "Could not allocate memory for the buffer");
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return ESP_ERR_NO_MEM;
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dump_result = ESP_ERR_NO_MEM;
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goto gcov_exit;
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}
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ESP_EARLY_LOGV(TAG, "Config apptrace down buf");
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esp_apptrace_down_buffer_config(down_buf, ESP_GCOV_DOWN_BUF_SIZE);
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/* we are directing the std outputs to the fake ones in order to reduce stack usage */
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FILE *old_stderr = stderr;
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FILE *old_stdout = stdout;
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stderr = (FILE *) &__sf_fake_stderr;
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stdout = (FILE *) &__sf_fake_stdout;
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ESP_EARLY_LOGV(TAG, "Dump data...");
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// incase of dual-core chip APP and PRO CPUs share the same table, so it is safe to save only PRO's table
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memcpy(&s_gcov_stub_table, syscall_table_ptr_pro, sizeof(s_gcov_stub_table));
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s_gcov_stub_table._lock_acquire_recursive = &gcov_stub_lock_acquire_recursive;
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s_gcov_stub_table._lock_release_recursive = &gcov_stub_lock_release_recursive;
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s_gcov_stub_table._lock_try_acquire_recursive = &gcov_stub_lock_try_acquire_recursive,
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syscall_table_ptr_pro = &s_gcov_stub_table;
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#if portNUM_PROCESSORS > 1
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syscall_table_ptr_app = &s_gcov_stub_table;
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#endif
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stderr = (FILE*) &__sf_fake_stderr;
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stdout = (FILE*) &__sf_fake_stdout;
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__gcov_dump();
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// reset dump status to allow incremental data accumulation
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__gcov_reset();
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stdout = old_stdout;
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stderr = old_stderr;
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syscall_table_ptr_pro = old_tables[0];
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#if portNUM_PROCESSORS > 1
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syscall_table_ptr_app = old_tables[1];
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#endif
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ESP_EARLY_LOGV(TAG, "Free apptrace down buf");
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free(down_buf);
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stderr = old_stderr;
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stdout = old_stdout;
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ESP_EARLY_LOGV(TAG, "Finish file transfer session");
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ret = esp_apptrace_fstop(ESP_APPTRACE_DEST_TRAX);
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if (ret != ESP_OK) {
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ESP_EARLY_LOGE(TAG, "Failed to send files transfer stop cmd (%d)!", ret);
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dump_result = esp_apptrace_fstop(ESP_APPTRACE_DEST_TRAX);
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if (dump_result != ESP_OK) {
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ESP_EARLY_LOGE(TAG, "Failed to send files transfer stop cmd (%d)!", dump_result);
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}
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gcov_exit:
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ESP_EARLY_LOGV(TAG, "dump_result %d", dump_result);
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if (running) {
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*running = false;
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}
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vTaskDelete(NULL);
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}
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static void gcov_create_task_hook(void)
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{
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if (s_create_gcov_task) {
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xTaskCreatePinnedToCore(&gcov_dump_task, "gcov_dump_task", 2048, &s_gcov_task_running, configMAX_PRIORITIES - 1, NULL, 0);
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s_create_gcov_task = false;
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}
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ESP_EARLY_LOGV(TAG, "exit %d", ret);
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return ret;
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}
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/**
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* @brief Triggers gcov info dump task
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* This function is to be called by OpenOCD, not by normal user code.
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* TODO: what about interrupted flash access (when cache disabled)???
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* TODO: what about interrupted flash access (when cache disabled)
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*
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* @return ESP_OK on success, otherwise see esp_err_t
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*/
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static int esp_dbg_stub_gcov_entry(void)
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{
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s_do_dump = true;
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/* we are in isr context here */
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s_create_gcov_task = true;
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return ESP_OK;
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}
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@ -132,35 +111,25 @@ int gcov_rtio_atexit(void (*function)(void) __attribute__ ((unused)))
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uint32_t capabilities = 0;
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ESP_EARLY_LOGV(TAG, "%s", __FUNCTION__);
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esp_dbg_stub_entry_set(ESP_DBG_STUB_ENTRY_GCOV, (uint32_t)&esp_dbg_stub_gcov_entry);
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return 0;
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if (esp_dbg_stub_entry_get(ESP_DBG_STUB_CAPABILITIES, &capabilities) == ESP_OK) {
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esp_dbg_stub_entry_set(ESP_DBG_STUB_CAPABILITIES, capabilities | ESP_DBG_STUB_CAP_GCOV_TASK);
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}
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esp_register_freertos_tick_hook(gcov_create_task_hook);
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return ESP_OK;
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}
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void esp_gcov_dump(void)
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{
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// disable IRQs on this CPU, other CPU is halted by OpenOCD
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unsigned irq_state = portENTER_CRITICAL_NESTED();
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#if !CONFIG_FREERTOS_UNICORE
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int other_core = xPortGetCoreID() ? 0 : 1;
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esp_cpu_stall(other_core);
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#endif
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while (!esp_apptrace_host_is_connected(ESP_APPTRACE_DEST_TRAX)) {
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wdt_hal_context_t twdt = {.inst = WDT_MWDT0, .mwdt_dev = &TIMERG0};
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wdt_hal_context_t iwdt = {.inst = WDT_MWDT1, .mwdt_dev = &TIMERG1};
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//Feed the Task Watchdog (TG0) to prevent it from timing out
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wdt_hal_write_protect_disable(&twdt);
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wdt_hal_feed(&twdt);
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wdt_hal_write_protect_enable(&twdt);
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//Likewise, feed the Interrupt Watchdog (TG1) to prevent a reboot
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wdt_hal_write_protect_disable(&iwdt);
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wdt_hal_feed(&iwdt);
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wdt_hal_write_protect_enable(&iwdt);
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vTaskDelay(pdMS_TO_TICKS(10));
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}
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esp_dbg_stub_gcov_dump_do();
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#if !CONFIG_FREERTOS_UNICORE
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esp_cpu_unstall(other_core);
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#endif
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portEXIT_CRITICAL_NESTED(irq_state);
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/* We are not in isr context here. Waiting for the completion is safe */
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s_create_gcov_task = true;
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s_gcov_task_running = true;
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while (s_gcov_task_running) {
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vTaskDelay(pdMS_TO_TICKS(10));
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}
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}
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void *gcov_rtio_fopen(const char *path, const char *mode)
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@ -179,7 +148,7 @@ int gcov_rtio_fclose(void *stream)
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size_t gcov_rtio_fread(void *ptr, size_t size, size_t nmemb, void *stream)
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{
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ESP_EARLY_LOGV(TAG, "%s read %u", __FUNCTION__, size*nmemb);
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ESP_EARLY_LOGV(TAG, "%s read %u", __FUNCTION__, size * nmemb);
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size_t sz = esp_apptrace_fread(ESP_APPTRACE_DEST_TRAX, ptr, size, nmemb, stream);
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ESP_EARLY_LOGV(TAG, "%s actually read %u", __FUNCTION__, sz);
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return sz;
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