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Merge branch 'feature/backtrace_dumps' into 'master'
Feature/backtrace dumps Github pull request https://github.com/espressif/esp-idf/pull/149 (Plus reformatting of panic.c, as it hadn't been formatted to our code style yet.) See merge request !290
This commit is contained in:
Angus Gratton
commit
f807d16310
@ -45,48 +45,59 @@ Note: The linker script will put everything in this file in IRAM/DRAM, so it als
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#if !CONFIG_ESP32_PANIC_SILENT_REBOOT
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//printf may be broken, so we fix our own printing fns...
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inline static void panicPutchar(char c) {
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inline static void panicPutChar(char c)
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{
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while (((READ_PERI_REG(UART_STATUS_REG(0)) >> UART_TXFIFO_CNT_S)&UART_TXFIFO_CNT) >= 126) ;
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WRITE_PERI_REG(UART_FIFO_REG(0), c);
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}
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inline static void panicPutStr(const char *c) {
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inline static void panicPutStr(const char *c)
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{
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int x = 0;
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while (c[x] != 0) {
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panicPutchar(c[x]);
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panicPutChar(c[x]);
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x++;
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}
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}
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inline static void panicPutHex(int a) {
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inline static void panicPutHex(int a)
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{
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int x;
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int c;
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panicPutchar(' ');
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for (x = 0; x < 8; x++) {
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c = (a >> 28) & 0xf;
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if (c<10) panicPutchar('0'+c); else panicPutchar('a'+c-10);
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if (c < 10) {
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panicPutChar('0' + c);
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} else {
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panicPutChar('a' + c - 10);
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}
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a <<= 4;
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}
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}
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inline static void panicPutDec(int a) {
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inline static void panicPutDec(int a)
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{
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int n1, n2;
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n1 = a % 10;
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n2 = a / 10;
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panicPutchar(' ');
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if (n2==0) panicPutchar(' '); else panicPutchar(n2+'0');
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panicPutchar(n1+'0');
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if (n2 == 0) {
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panicPutChar(' ');
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} else {
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panicPutChar(n2 + '0');
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}
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panicPutChar(n1 + '0');
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}
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#else
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//No printing wanted. Stub out these functions.
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inline static void panicPutchar(char c) { }
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inline static void panicPutChar(char c) { }
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inline static void panicPutStr(const char *c) { }
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inline static void panicPutHex(int a) { }
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inline static void panicPutDec(int a) { }
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#endif
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void __attribute__((weak)) vApplicationStackOverflowHook( TaskHandle_t xTask, signed char *pcTaskName ) {
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void __attribute__((weak)) vApplicationStackOverflowHook( TaskHandle_t xTask, signed char *pcTaskName )
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{
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panicPutStr("***ERROR*** A stack overflow in task ");
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panicPutStr((char *)pcTaskName);
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panicPutStr(" has been detected.\r\n");
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@ -117,7 +128,8 @@ static void haltOtherCore()
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}
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//Returns true when a debugger is attached using JTAG.
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static int inOCDMode() {
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static int inOCDMode()
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{
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#if CONFIG_ESP32_DEBUG_OCDAWARE
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int dcr;
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int reg = 0x10200C; //DSRSET register
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@ -128,7 +140,8 @@ static int inOCDMode() {
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#endif
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}
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void panicHandler(XtExcFrame *frame) {
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void panicHandler(XtExcFrame *frame)
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{
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int *regs = (int *)frame;
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//Please keep in sync with PANIC_RSN_* defines
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const char *reasons[] = {
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@ -142,7 +155,9 @@ void panicHandler(XtExcFrame *frame) {
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};
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const char *reason = reasons[0];
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//The panic reason is stored in the EXCCAUSE register.
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if (regs[20]<=PANIC_RSN_MAX) reason=reasons[regs[20]];
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if (regs[20] <= PANIC_RSN_MAX) {
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reason = reasons[regs[20]];
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}
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haltOtherCore();
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panicPutStr("Guru Meditation Error: Core ");
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panicPutDec(xPortGetCoreID());
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@ -156,7 +171,8 @@ void panicHandler(XtExcFrame *frame) {
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commonErrorHandler(frame);
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}
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static void setFirstBreakpoint(uint32_t pc) {
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static void setFirstBreakpoint(uint32_t pc)
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{
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asm(
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"wsr.ibreaka0 %0\n" \
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"rsr.ibreakenable a3\n" \
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@ -166,14 +182,19 @@ static void setFirstBreakpoint(uint32_t pc) {
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::"r"(pc):"a3", "a4");
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}
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void xt_unhandled_exception(XtExcFrame *frame) {
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void xt_unhandled_exception(XtExcFrame *frame)
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{
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int *regs = (int *)frame;
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int x;
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haltOtherCore();
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panicPutStr("Guru Meditation Error of type ");
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x = regs[20];
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if (x<40) panicPutStr(edesc[x]); else panicPutStr("Unknown");
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if (x < 40) {
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panicPutStr(edesc[x]);
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} else {
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panicPutStr("Unknown");
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}
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panicPutStr(" occurred on core ");
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panicPutDec(xPortGetCoreID());
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if (inOCDMode()) {
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@ -197,7 +218,8 @@ the risk of somehow halting in the panic handler and not resetting. That is why
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all watchdogs except the timer group 0 watchdog, and it reconfigures that to reset the chip after
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one second.
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*/
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static void reconfigureAllWdts() {
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static void reconfigureAllWdts()
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{
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TIMERG0.wdt_wprotect = TIMG_WDT_WKEY_VALUE;
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TIMERG0.wdt_feed = 1;
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TIMERG0.wdt_config0.sys_reset_length = 7; //3.2uS
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@ -217,7 +239,8 @@ static void reconfigureAllWdts() {
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/*
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This disables all the watchdogs for when we call the gdbstub.
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*/
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static void disableAllWdts() {
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static void disableAllWdts()
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{
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TIMERG0.wdt_wprotect = TIMG_WDT_WKEY_VALUE;
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TIMERG0.wdt_config0.en = 0;
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TIMERG0.wdt_wprotect = 0;
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@ -228,17 +251,55 @@ static void disableAllWdts() {
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#endif
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static inline bool stackPointerIsSane(uint32_t sp)
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{
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return !(sp < 0x3ffae010 || sp > 0x3ffffff0 || ((sp & 0xf) != 0));
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}
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static void putEntry(uint32_t pc, uint32_t sp)
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{
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if (pc & 0x80000000) {
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pc = (pc & 0x3fffffff) | 0x40000000;
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}
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panicPutStr(" 0x");
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panicPutHex(pc);
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panicPutStr(":0x");
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panicPutHex(sp);
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}
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void doBacktrace(XtExcFrame *frame)
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{
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uint32_t i = 0, pc = frame->pc, sp = frame->a1;
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panicPutStr("\nBacktrace:");
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/* Do not check sanity on first entry, PC could be smashed. */
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putEntry(pc, sp);
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pc = frame->a0;
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while (i++ < 100) {
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uint32_t psp = sp;
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if (!stackPointerIsSane(sp) || i++ > 100) {
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break;
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}
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sp = *((uint32_t *) (sp - 0x10 + 4));
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putEntry(pc, sp);
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pc = *((uint32_t *) (psp - 0x10));
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if (pc < 0x40000000) {
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break;
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}
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}
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panicPutStr("\n\n");
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}
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/*
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We arrive here after a panic or unhandled exception, when no OCD is detected. Dump the registers to the
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serial port and either jump to the gdb stub, halt the CPU or reboot.
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*/
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void commonErrorHandler(XtExcFrame *frame) {
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void commonErrorHandler(XtExcFrame *frame)
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{
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int *regs = (int *)frame;
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int x, y;
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const char *sdesc[] = {
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"PC ", "PS ", "A0 ", "A1 ", "A2 ", "A3 ", "A4 ", "A5 ",
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"A6 ", "A7 ", "A8 ", "A9 ", "A10 ", "A11 ", "A12 ", "A13 ",
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"A14 ","A15 ","SAR ","EXCCAUSE","EXCVADDR","LBEG ","LEND ","LCOUNT "};
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"A14 ", "A15 ", "SAR ", "EXCCAUSE", "EXCVADDR", "LBEG ", "LEND ", "LCOUNT "
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};
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//Feed the watchdogs, so they will give us time to print out debug info
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reconfigureAllWdts();
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@ -249,20 +310,24 @@ void commonErrorHandler(XtExcFrame *frame) {
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for (y = 0; y < 4; y++) {
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if (sdesc[x + y][0] != 0) {
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panicPutStr(sdesc[x + y]);
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panicPutStr(": ");
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panicPutStr(": 0x");
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panicPutHex(regs[x + y + 1]);
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panicPutStr(" ");
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}
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}
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panicPutStr("\r\n");
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}
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/* With windowed ABI backtracing is easy, let's do it. */
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doBacktrace(frame);
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#if CONFIG_ESP32_PANIC_GDBSTUB
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disableAllWdts();
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panicPutStr("Entering gdb stub now.\r\n");
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esp_gdbstub_panic_handler(frame);
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#elif CONFIG_ESP32_PANIC_PRINT_REBOOT || CONFIG_ESP32_PANIC_SILENT_REBOOT
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panicPutStr("Rebooting...\r\n");
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for (x=0; x<100; x++) ets_delay_us(1000);
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for (x = 0; x < 100; x++) {
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ets_delay_us(1000);
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}
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software_reset();
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#else
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disableAllWdts();
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@ -272,7 +337,10 @@ void commonErrorHandler(XtExcFrame *frame) {
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}
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void esp_set_breakpoint_if_jtag(void *fn) {
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if (!inOCDMode()) return;
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void esp_set_breakpoint_if_jtag(void *fn)
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{
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if (!inOCDMode()) {
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return;
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}
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setFirstBreakpoint((uint32_t)fn);
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}
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0
tools/format.sh
Normal file → Executable file
0
tools/format.sh
Normal file → Executable file
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