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100 lines
2.2 KiB
C
100 lines
2.2 KiB
C
/*
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* Copyright (C) 2024 Mesotic SAS
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup tests
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* @{
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*
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* @file
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* @brief Test application for the cortexm_stack_limit pseudo-module
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*
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* @author Dylan Laduranty <dylan.laduranty@mesotic.com>
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*
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* @}
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*/
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#include <stdio.h>
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#include "cpu.h"
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#include "thread.h"
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#include "board.h"
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#define CANARY_VALUE 0xdeadbeef
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static struct {
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unsigned int canary;
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char stack[THREAD_STACKSIZE_MAIN];
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} buf;
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/* Tell modern GCC (12.x) to not complain that this infinite recursion is
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* bound to overflow the stack - this is exactly what this test wants to do :)
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*
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* Also, tell older versions of GCC that do not know about -Winfinit-recursion
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* that it is safe to ignore `GCC diagnostics ignored "-Winfinit-recursion"`.
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* They behave as intended in this case :)
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*/
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wpragmas"
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#pragma GCC diagnostic ignored "-Winfinite-recursion"
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static int recurse(int counter)
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{
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if (buf.canary != CANARY_VALUE) {
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#ifdef LED0_ON
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LED0_ON;
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#endif
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#ifdef LED1_ON
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LED1_ON;
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#endif
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#ifdef LED2_ON
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LED2_ON;
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#endif
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#ifdef LED3_ON
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LED3_ON;
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#endif
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for (;;) {
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thread_sleep();
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}
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}
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counter++;
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/* Recursing twice here prevents the compiler from optimizing-out the recursion. */
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return recurse(counter) + recurse(counter);
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}
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#pragma GCC diagnostic pop
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static void *thread(void *arg)
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{
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(void) arg;
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recurse(0);
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return NULL;
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}
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int main(void)
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{
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puts("\nCortex-M Stack limit test\n");
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puts("If the test fails, all onboard LEDs will be on");
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#ifdef MODULE_CORTEXM_STACK_LIMIT
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puts("The cortexm_stack_limit module is present. Expect the board to crash"\
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" without onboard LEDs on.\n");
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#else
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puts("The cortexm_stack_limit module is missing! Expect the test to crash"\
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" with all onboard LEDs on\n");
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#endif
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buf.canary = CANARY_VALUE;
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thread_create(buf.stack, sizeof(buf.stack), THREAD_PRIORITY_MAIN + 1,
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0, thread, NULL, "thread");
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return 0;
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}
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