esp-idf/tools/test_apps/system/panic/main/test_panic_main.c
2020-05-12 22:27:06 +02:00

168 lines
3.8 KiB
C

#include <stdio.h>
#include <unistd.h>
#include <assert.h>
#include <string.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_partition.h"
#include "esp_flash.h"
#include "esp_system.h"
/* utility functions */
static void die(const char* msg) __attribute__ ((noreturn));
static const char* get_test_name();
/* functions which cause an exception/panic in different ways */
static void test_abort();
static void test_int_wdt();
static void test_task_wdt();
static void test_storeprohibited();
static void test_cache_error();
static void test_int_wdt_cache_disabled();
static void test_stack_overflow();
static void test_illegal_instruction();
static void test_instr_fetch_prohibited();
void app_main(void)
{
/* Needed to allow the tick hook to set correct INT WDT timeouts */
vTaskDelay(2);
/* Test script sends to command over UART. Read it and determine how to proceed. */
const char* test_name = get_test_name();
if (test_name == NULL) {
/* Nothing to do */
return;
}
printf("Got test name: %s\n", test_name);
#define HANDLE_TEST(name_) \
if (strcmp(test_name, #name_) == 0) { \
name_(); \
die("Test function has returned"); \
}
HANDLE_TEST(test_abort);
HANDLE_TEST(test_int_wdt);
HANDLE_TEST(test_task_wdt);
HANDLE_TEST(test_storeprohibited);
HANDLE_TEST(test_cache_error);
HANDLE_TEST(test_int_wdt_cache_disabled);
HANDLE_TEST(test_stack_overflow);
HANDLE_TEST(test_illegal_instruction);
HANDLE_TEST(test_instr_fetch_prohibited);
#undef HANDLE_TEST
die("Unknown test name");
}
/* implementations of the test functions */
static void test_abort()
{
abort();
}
static void test_int_wdt()
{
portDISABLE_INTERRUPTS();
while (true) {
;
}
}
static void test_task_wdt()
{
while (true) {
;
}
}
static void test_storeprohibited()
{
*(int*) 0x1 = 0;
}
static IRAM_ATTR void test_cache_error()
{
esp_flash_default_chip->os_func->start(esp_flash_default_chip->os_func_data);
die("this should not be printed");
}
static void IRAM_ATTR test_int_wdt_cache_disabled()
{
esp_flash_default_chip->os_func->start(esp_flash_default_chip->os_func_data);
portDISABLE_INTERRUPTS();
while (true) {
;
}
}
static void test_stack_overflow()
{
volatile uint8_t stuff[CONFIG_ESP_MAIN_TASK_STACK_SIZE * 2];
for (int i = 0; i < sizeof(stuff); ++i) {
stuff[i] = rand();
}
}
static void test_illegal_instruction()
{
__asm__ __volatile__("ill");
}
static void test_instr_fetch_prohibited()
{
typedef void (*fptr_t)(void);
volatile fptr_t fptr = (fptr_t) 0x4;
fptr();
}
/* implementations of the utility functions */
#define BOOT_CMD_MAX_LEN (128)
static const char* get_test_name()
{
static char test_name_str[BOOT_CMD_MAX_LEN] = {0};
printf("Enter test name: ");
fflush(stdout);
/* Not using blocking fgets(stdin) here, as QEMU doesn't yet implement RX timeout interrupt,
* which is required for the UART driver and blocking stdio to work.
*/
int c = EOF;
char *p = test_name_str;
const char *end = test_name_str + sizeof(test_name_str) - 1;
while (p < end) {
c = getchar();
if (c == EOF) {
vTaskDelay(pdMS_TO_TICKS(10));
} else if (c == '\r') {
continue;
} else if (c == '\n') {
*p = '\0';
break;
} else {
*p = c;
++p;
}
}
return test_name_str;
}
extern void esp_restart_noos(void) __attribute__ ((noreturn));
static void die(const char* msg)
{
printf("Test error: %s\n\n", msg);
fflush(stdout);
fsync(fileno(stdout));
/* Don't use abort here as it would enter the panic handler */
esp_restart_noos();
}