alloca test for nxdk

gistfile1.txt

#include <hal/debug.h>
#include <hal/video.h>
#include <windows.h>
#include <malloc.h>
#include <string.h>

// tests whether alloca overlaps other parts of the stack
// by writing into an alloca allocated buffer and then
// checking other variables on the stack. Also tests
// whether we can return properly afterwards

void testfunc ()
{
    int a = 0xDEADBEEF;
    char *buf = alloca(256);
    int b = 0xDEADC0DE;

    debugPrint("&a: %p\n", &a);
    debugPrint("buf: %p\n", buf);
    debugPrint("&b: %p\n", &b);

    memset(buf, 0, 256);

    debugPrint("a: %X\n", a);
    debugPrint("b: %X\n", b);
}

int main(void)
{
    XVideoSetMode(640, 480, 32, REFRESH_DEFAULT);

    debugPrint("calling testfunc()\n");
    testfunc();
    debugPrint("testfunc() done\n");


    while(1) {
        Sleep(2000);
    }

    return 0;
}