bab80ad202
This commit adds the ability for backtracing to trace from the itnerrupt to the task stack, and across nested interrupts. Test cases have also been added. See MR !4084
72 lines
2.7 KiB
C
72 lines
2.7 KiB
C
/*
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* Note: Currently, the backtraces must still be checked manually. Therefore,
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* these test cases should always pass.
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* Todo: Automate the checking of backtrace addresses.
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*/
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#include <stdlib.h>
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#include "unity.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "freertos/xtensa_api.h"
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#include "esp_intr_alloc.h"
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#define SW_ISR_LEVEL_1 7
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#define SW_ISR_LEVEL_3 29
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#define RECUR_DEPTH 3
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#define ACTION_ABORT -1
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#define ACTION_INT_WDT -2
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// Set to (-1) for abort(), (-2) for interrupt watchdog
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static int backtrace_trigger_source;
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/*
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* Recursive functions to generate a longer call stack. When the max specified
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* recursion depth is reached, the following actions can be taken.
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*/
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static void __attribute__((__noinline__)) recursive_func(int recur_depth, int action)
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{
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if (recur_depth > 1) {
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recursive_func(recur_depth - 1, action);
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} else if (action >= 0) {
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xt_set_intset(1 << action);
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} else if (action == ACTION_ABORT) {
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abort();
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// Todo: abort() causes problems in GDB Stub backtrace due to being 'non returning'.
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} else if (action == ACTION_INT_WDT) {
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portDISABLE_INTERRUPTS();
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while (1) {
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;
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}
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}
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}
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static void level_three_isr (void *arg)
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{
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xt_set_intclear(1 << SW_ISR_LEVEL_3); //Clear interrupt
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recursive_func(RECUR_DEPTH, backtrace_trigger_source); //Abort at the max recursive depth
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}
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static void level_one_isr(void *arg)
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{
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xt_set_intclear(1 << SW_ISR_LEVEL_1); //Clear interrupt
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recursive_func(RECUR_DEPTH, SW_ISR_LEVEL_3); //Trigger nested interrupt max recursive depth
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}
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TEST_CASE("Test backtrace from abort", "[reset_reason][reset=abort,SW_CPU_RESET]")
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{
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//Allocate level one and three SW interrupts
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esp_intr_alloc(ETS_INTERNAL_SW0_INTR_SOURCE, 0, level_one_isr, NULL, NULL); //Level 1 SW intr
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esp_intr_alloc(ETS_INTERNAL_SW1_INTR_SOURCE, 0, level_three_isr, NULL, NULL); //Level 3 SW intr
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backtrace_trigger_source = ACTION_ABORT;
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recursive_func(RECUR_DEPTH, SW_ISR_LEVEL_1); //Trigger lvl 1 SW interrupt at max recursive depth
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}
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TEST_CASE("Test backtrace from interrupt watchdog timeout", "[reset_reason][reset=Interrupt wdt timeout on CPU0,SW_CPU_RESET]")
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{
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//Allocate level one and three SW interrupts
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esp_intr_alloc(ETS_INTERNAL_SW0_INTR_SOURCE, 0, level_one_isr, NULL, NULL); //Level 1 SW intr
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esp_intr_alloc(ETS_INTERNAL_SW1_INTR_SOURCE, 0, level_three_isr, NULL, NULL); //Level 3 SW intr
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backtrace_trigger_source = ACTION_INT_WDT;
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recursive_func(RECUR_DEPTH, SW_ISR_LEVEL_1); //Trigger lvl 1 SW interrupt at max recursive depth
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}
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