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esp32: Adds functionality for application tracing over JTAG

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- Implements application tracing module which allows to send arbitrary
   data to host over JTAG. This feature is useful for analyzing
   program modules behavior, dumping run-time application data etc.
 - Implements printf-like logging functions on top of apptrace module.
   This feature is a kind of semihosted printf functionality with lower
   overhead and impact on system behaviour as compared to standard printf.
This commit is contained in:
Alexey Gerenkov
2017-01-25 19:35:28 +03:00
parent ad50a70440
commit 55f1a63faf
22 changed files with 5135 additions and 61 deletions
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21
components/esp32/panic.c
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@@ -38,6 +38,7 @@
#include "esp_core_dump.h"
#include "esp_spi_flash.h"
#include "esp_cache_err_int.h"
#include "esp_app_trace.h"
/*
Panic handlers; these get called when an unhandled exception occurs or the assembly-level
@@ -114,6 +115,9 @@ static bool abort_called;
static __attribute__((noreturn)) inline void invoke_abort()
{
abort_called = true;
#if CONFIG_ESP32_APPTRACE_ENABLE
esp_apptrace_flush_nolock(ESP_APPTRACE_DEST_TRAX, ESP_APPTRACE_TRAX_BLOCK_SIZE*CONFIG_ESP32_APPTRACE_ONPANIC_HOST_FLUSH_TRAX_THRESH/100, CONFIG_ESP32_APPTRACE_ONPANIC_HOST_FLUSH_TMO);
#endif
while(1) {
__asm__ ("break 0,0");
*((int*) 0) = 0;
@@ -226,6 +230,9 @@ void panicHandler(XtExcFrame *frame)
}
if (esp_cpu_in_ocd_debug_mode()) {
#if CONFIG_ESP32_APPTRACE_ENABLE
esp_apptrace_flush_nolock(ESP_APPTRACE_DEST_TRAX, ESP_APPTRACE_TRAX_BLOCK_SIZE*CONFIG_ESP32_APPTRACE_ONPANIC_HOST_FLUSH_TRAX_THRESH/100, CONFIG_ESP32_APPTRACE_ONPANIC_HOST_FLUSH_TMO);
#endif
setFirstBreakpoint(frame->pc);
return;
}
@@ -248,6 +255,9 @@ void xt_unhandled_exception(XtExcFrame *frame)
panicPutStr(" at pc=");
panicPutHex(frame->pc);
panicPutStr(". Setting bp and returning..\r\n");
#if CONFIG_ESP32_APPTRACE_ENABLE
esp_apptrace_flush_nolock(ESP_APPTRACE_DEST_TRAX, ESP_APPTRACE_TRAX_BLOCK_SIZE*CONFIG_ESP32_APPTRACE_ONPANIC_HOST_FLUSH_TRAX_THRESH/100, CONFIG_ESP32_APPTRACE_ONPANIC_HOST_FLUSH_TMO);
#endif
//Stick a hardware breakpoint on the address the handler returns to. This way, the OCD debugger
//will kick in exactly at the context the error happened.
setFirstBreakpoint(frame->pc);
@@ -282,11 +292,10 @@ static void reconfigureAllWdts()
TIMERG1.wdt_wprotect = 0;
}
#if CONFIG_ESP32_PANIC_GDBSTUB || CONFIG_ESP32_PANIC_PRINT_HALT || CONFIG_ESP32_ENABLE_COREDUMP
/*
This disables all the watchdogs for when we call the gdbstub.
*/
static void disableAllWdts()
static inline void disableAllWdts()
{
TIMERG0.wdt_wprotect = TIMG_WDT_WKEY_VALUE;
TIMERG0.wdt_config0.en = 0;
@@ -296,8 +305,6 @@ static void disableAllWdts()
TIMERG1.wdt_wprotect = 0;
}
#endif
static void esp_panic_wdt_start()
{
if (REG_GET_BIT(RTC_CNTL_WDTCONFIG0_REG, RTC_CNTL_WDT_EN)) {
@@ -422,6 +429,12 @@ static void commonErrorHandler(XtExcFrame *frame)
/* With windowed ABI backtracing is easy, let's do it. */
doBacktrace(frame);
#if CONFIG_ESP32_APPTRACE_ENABLE
disableAllWdts();
esp_apptrace_flush_nolock(ESP_APPTRACE_DEST_TRAX, ESP_APPTRACE_TRAX_BLOCK_SIZE*CONFIG_ESP32_APPTRACE_ONPANIC_HOST_FLUSH_TRAX_THRESH/100, CONFIG_ESP32_APPTRACE_ONPANIC_HOST_FLUSH_TMO);
reconfigureAllWdts();
#endif
#if CONFIG_ESP32_PANIC_GDBSTUB
disableAllWdts();
esp_panic_wdt_stop();