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// This file is part of the CircuitPython project: https://circuitpython.org

//

// SPDX-FileCopyrightText: Copyright (c) 2018 Scott Shawcroft for Adafruit Industries

//

// SPDX-License-Identifier: MIT

#include "stack.h"

#include "py/mpconfig.h"

#include "py/runtime.h"

#include "supervisor/cpu.h"

#include "supervisor/port.h"

#include "supervisor/shared/safe_mode.h"

void stack_init(void) {

// Zephyr has a stack canary of its own.

#ifndef __ZEPHYR__

uint32_t *stack_limit = port_stack_get_limit();

*stack_limit = STACK_CANARY_VALUE;

#endif

}

inline bool stack_ok(void) {

#ifndef __ZEPHYR__

uint32_t *stack_limit = port_stack_get_limit();

return *stack_limit == STACK_CANARY_VALUE;

#endif

}

inline void assert_heap_ok(void) {

#ifndef __ZEPHYR__

if (!stack_ok()) {

reset_into_safe_mode(SAFE_MODE_STACK_OVERFLOW);

}

#endif

}