#define PORT_FOO (*((volatile long*)0x11223344))
#define PORT_BAR (*((volatile long*)0xc0ffee))

int main() {
	int i;
	for (i = 0; i < 128; i++) {
		PORT_FOO = i;
		PORT_BAR = (~i) & 0xc3;
	}
	if (PORT_FOO & PORT_BAR) {
		PORT_FOO = 0x77;
	} else {
		PORT_BAR = 0x99;
	}
	return 0;
}