pub fn write(reg: comptime_int, val: u32) void {
    const mmio_ptr: *volatile u32 = @ptrFromInt(reg);
    mmio_ptr.* = val;
}

pub fn read(reg: comptime_int) u32 {
    const mmio_ptr: *volatile u32 = @ptrFromInt(reg);
    return mmio_ptr.*;
}