esp-idf/tools/test_apps/system/memprot/main/esp32c3/test_panic.c
Guillaume Souchere dcae121d80 hal: Deprecate soc_hal.h and soc_ll.h interface
This commit marks all functions in soc_hal.h and soc_ll.h as deprecated.
Users should use functions from esp_cpu.h instead.

Also added missing wrap funcions for esp_cpu_stall() in test_panic.c files.
2022-07-22 00:06:06 +08:00

55 lines
1.7 KiB
C

/*
* SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "riscv/rvruntime-frames.h"
#include "esp_private/panic_internal.h"
#define MCAUSE_ILLEGAL_INSTRUCTION 2
extern void esp_panic_handler(panic_info_t *info);
volatile bool g_override_illegal_instruction = false;
void __real_esp_panic_handler(panic_info_t *info);
void __real_esp_cpu_stall(int core_id);
void return_from_panic_handler(RvExcFrame *frm) __attribute__((noreturn));
/* Memprot test specific IllegalInstruction exception handler:
* when testing the protection against a code execution, sample code
* is being injected into various memory regions which produces
* Illegal instruction on execution attempt. Such a result is expected
* but it causes system reboot in the standard panic handler.
* The following variant of panic handling simply returns back to the
* next instruction and continues normal execution.
*
* NOTE: if Illegal instruction comes from a different source than the testing code
* the behavior is undefined
* */
void __wrap_esp_panic_handler(panic_info_t *info)
{
RvExcFrame *frm = (RvExcFrame *)info->frame;
if ( frm->mcause == MCAUSE_ILLEGAL_INSTRUCTION && g_override_illegal_instruction == true ) {
/* Return from exception to the return address that called the faulting function.
*/
frm->mepc = frm->ra;
/* Restore the CPU state and return from the exception.
*/
return_from_panic_handler(frm);
} else {
__real_esp_panic_handler(info);
}
}
void __wrap_esp_cpu_stall(int core_id)
{
if ( g_override_illegal_instruction == true ) {
return;
} else {
__real_esp_cpu_stall(core_id);
}
}