/* stack.c - check stack depth on Hades Mips R3051
 *
 */



#define ADDR  0x00000400




int sum_recursive( int value ) {
  int* ptr;

  ptr = (int*) ADDR;

  if (value == 0) {
    *ptr = 0;
    return 0;
  }
  else {
    *(ptr+value) = value;
    return value + sum_recursive( value-1 );
  }
}


int main( void ) {
  int i;
  int * ptr;

  // uncomment to initialize frame-pointer and stack-pointer 
  // to user-specified locations:
  // register int l asm ("$29") = 0x0000ea00;
  // register int m asm ("$30") = 0x0000ea00;

  ptr = (int*) ADDR;
  *(ptr-4) = 0xcafe0001;
  i = sum_recursive( 15 );

  *(ptr-8) = 0xcafe0002;
  i = sum_recursive( 37 );

  *(ptr-12) = 0xcafe0003;
  i = sum_recursive( 876 );

  *(ptr-16) = 0xcafe0004;
  i = sum_recursive( 4097 );

  *(ptr-20) = 0xcafe0004;
  for( i=0; ; i++ ) {
    *ptr = i;
  }
}