Method read_doubleword

crates/virtual-machine/src/memory.rs:31–35

(&mut self, addr: u64)

        let hi = self.read_byte(addr + 1)? as u16;
        Ok(lo | (hi << 8))
    }
    fn read_word(&mut self, addr: u64) -> Result<u32, VmError> {
        let lo = self.read_halfword(addr)? as u32;
        let hi = self.read_halfword(addr + 2)? as u32;
        Ok(lo | (hi << 16))
    }
    fn read_doubleword(&mut self, addr: u64) -> Result<u64, VmError> {
        let lo = self.read_word(addr)? as u64;