gcov: use GCC API to control GCOV data dumps
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2 changed files with 52 additions and 32 deletions
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@ -31,10 +31,13 @@
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#include "esp_log.h"
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const static char *TAG = "esp_gcov_rtio";
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static void (*s_gcov_exit)(void);
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#if GCC_NOT_5_2_0
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void __gcov_dump(void);
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void __gcov_reset(void);
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#else
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/* The next code for old GCC */
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/* TODO: remove code extracted from GCC when IDF toolchain will be updated */
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/*=============== GCC CODE START ====================*/
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static void (*s_gcov_exit)(void);
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/* Root of a program/shared-object state */
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struct gcov_root
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{
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@ -53,27 +56,36 @@ static void esp_gcov_reset_status(void)
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__gcov_root.dumped = 0;
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__gcov_root.run_counted = 0;
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}
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/*=============== GCC CODE END ====================*/
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#endif
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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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ESP_EARLY_LOGV(TAG, "Check for dump handler %p", s_gcov_exit);
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if (s_gcov_exit) {
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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, "Failed to send files transfer stop cmd (%d)!", ret);
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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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}
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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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ESP_EARLY_LOGV(TAG, "Dump data... %p", s_gcov_exit);
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ESP_EARLY_LOGV(TAG, "Dump data...");
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#if GCC_NOT_5_2_0
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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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#else
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ESP_EARLY_LOGV(TAG, "Check for dump handler %p", s_gcov_exit);
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if (s_gcov_exit) {
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s_gcov_exit();
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// reset dump status to allow incremental data accumulation
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esp_gcov_reset_status();
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}
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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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}
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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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@ -91,24 +103,26 @@ static int esp_dbg_stub_gcov_dump_do(void)
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*/
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static int esp_dbg_stub_gcov_entry(void)
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{
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#if GCC_NOT_5_2_0
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return esp_dbg_stub_gcov_dump_do();
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#else
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int ret = ESP_OK;
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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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ret = esp_dbg_stub_gcov_dump_do();
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// reset dump status to allow incremental data accumulation
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esp_gcov_reset_status();
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portEXIT_CRITICAL_NESTED(irq_state);
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return ret;
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#endif
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}
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void esp_gcov_dump()
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{
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#if CONFIG_FREERTOS_UNICORE == 0
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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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// to avoid complains that task watchdog got triggered for other tasks
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TIMERG0.wdt_wprotect=TIMG_WDT_WKEY_VALUE;
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@ -121,24 +135,27 @@ void esp_gcov_dump()
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}
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esp_dbg_stub_gcov_dump_do();
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// reset dump status to allow incremental data accumulation
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esp_gcov_reset_status();
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#if CONFIG_FREERTOS_UNICORE == 0
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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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}
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int gcov_rtio_atexit(void (*function)(void))
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int gcov_rtio_atexit(void (*function)(void) __attribute__ ((unused)))
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{
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#if GCC_NOT_5_2_0
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ESP_EARLY_LOGV(TAG, "%s", __FUNCTION__);
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#else
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ESP_EARLY_LOGV(TAG, "%s %p", __FUNCTION__, function);
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s_gcov_exit = function;
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#endif
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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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}
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void *gcov_rtio_fopen(const char *path, const char *mode)
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{
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ESP_EARLY_LOGV(TAG, "%s", __FUNCTION__);
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ESP_EARLY_LOGV(TAG, "%s '%s' '%s'", __FUNCTION__, path, mode);
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return esp_apptrace_fopen(ESP_APPTRACE_DEST_TRAX, path, mode);
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}
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@ -150,8 +167,10 @@ 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", __FUNCTION__);
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return esp_apptrace_fread(ESP_APPTRACE_DEST_TRAX, ptr, size, nmemb, stream);
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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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}
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size_t gcov_rtio_fwrite(const void *ptr, size_t size, size_t nmemb, void *stream)
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@ -162,17 +181,15 @@ size_t gcov_rtio_fwrite(const void *ptr, size_t size, size_t nmemb, void *stream
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int gcov_rtio_fseek(void *stream, long offset, int whence)
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{
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ESP_EARLY_LOGV(TAG, "%s", __FUNCTION__);
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int ret = esp_apptrace_fseek(ESP_APPTRACE_DEST_TRAX, stream, offset, whence);
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ESP_EARLY_LOGV(TAG, "%s EXIT", __FUNCTION__);
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ESP_EARLY_LOGV(TAG, "%s(%p %ld %d) = %d", __FUNCTION__, stream, offset, whence, ret);
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return ret;
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}
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long gcov_rtio_ftell(void *stream)
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{
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ESP_EARLY_LOGV(TAG, "%s", __FUNCTION__);
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long ret = esp_apptrace_ftell(ESP_APPTRACE_DEST_TRAX, stream);
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ESP_EARLY_LOGV(TAG, "%s", __FUNCTION__);
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ESP_EARLY_LOGV(TAG, "%s(%p) = %ld", __FUNCTION__, stream, ret);
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return ret;
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}
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#endif
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@ -158,3 +158,6 @@ Overall coverage rate:
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lines......: 90.0% (18 of 20 lines)
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functions..: 100.0% (3 of 3 functions)
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```
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NOTE: Since `lcov` tool is not part of GCC bundle it can happen that format of GCOV binary data has been changed and your local version of `lcov` fails to understand it.
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So it always better to use the latest `lcov` version from [LCOV repo](https://github.com/linux-test-project/lcov).
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