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Dump register state on fatal exception

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This commit is contained in:
Angus Gratton 2016-05-03 15:37:32 +10:00
parent 44b4ccdfba
commit 4511ae80b9
1 changed files with 19 additions and 2 deletions
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21
core/debug_dumps.c
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@ -68,6 +68,22 @@ void dump_stack(uint32_t *sp) {
} }
} }
/* Dump exception status registers as stored above 'sp'
by the interrupt handler preamble
*/
void dump_exception_registers(uint32_t *sp) {
uint32_t excsave1;
uint32_t *saved = sp - (0x50 / sizeof(uint32_t));
printf("Registers:\n");
RSR(excsave1, excsave1);
printf("a0 %08x ", excsave1);
printf("a1 %08x ", (intptr_t)sp);
for(int a = 2; a < 14; a++) {
printf("a%-2d %08x%c", a, saved[a+3], a == 3 || a == 7 || a == 11 ? '\n':' ');
}
printf("SAR %08x\n", saved[0x13]);
}
void IRAM fatal_exception_handler(uint32_t *sp) { void IRAM fatal_exception_handler(uint32_t *sp) {
if (!sdk_NMIIrqIsOn) { if (!sdk_NMIIrqIsOn) {
vPortEnterCritical(); vPortEnterCritical();
@ -78,11 +94,12 @@ void IRAM fatal_exception_handler(uint32_t *sp) {
Cache_Read_Disable(); Cache_Read_Disable();
Cache_Read_Enable(0, 0, 1); Cache_Read_Enable(0, 0, 1);
dump_excinfo(); dump_excinfo();
if (sp) if (sp) {
dump_exception_registers(sp);
dump_stack(sp); dump_stack(sp);
}
uart_flush_txfifo(0); uart_flush_txfifo(0);
uart_flush_txfifo(1); uart_flush_txfifo(1);
sdk_system_restart_in_nmi(); sdk_system_restart_in_nmi();
while(1) {} while(1) {}
} }