esp-idf/components/xtensa/trax/test/test.c

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/* A simple program for testing the CPU trace feature.
* Doesn't matter what it does, as long as it runs for a sufficient amount of time.
* The program is linked with the linker script of 2nd stage bootloader, and gets
* run from the boot ROM.
*/
int fib(int n)
{
if (n <= 1) {
return n;
}
return fib(n - 1) + fib(n - 2);
}
void done()
{
/* serves as a breakpoint target for the debugger */
}
void entry(void)
{
for (int i = 0; i < 10; ++ i) {
fib(10);
}
done();
}