#[macro_export]
/// Generate a Mnemonic for an 8-bit Register from a ModRM byte.
macro_rules! modrmb {
    ($self:ident, $variant:ident) => {{
        let (target, reg) = $self.parse_modrm_byte(Operand::Byte(0));
        Mnemonic::$variant(target, Register::by_id(Operand::Byte(reg)))
    }};
}

#[macro_export]
/// Generate a Mnemonic for a 16-bit Register from a ModRM byte.
macro_rules! modrmv {
    ($self:ident, $variant:ident) => {{
        let (target, reg) = $self.parse_modrm_byte(Operand::Word(0));
        Mnemonic::$variant(target, Register::by_id(Operand::Word(reg.into())))
    }};
}

#[macro_export]
/// Generate a Mnemonic for a 16-bit Segment Register from a ModRM byte.
macro_rules! modrms {
    ($self:ident, $variant:ident) => {{
        let (target, reg) = $self.parse_modrm_byte(Operand::Word(0));
        Mnemonic::$variant(target, SegmentRegister::by_id(reg))
    }};
}

#[macro_export]
/// Generate the resulting Mnemonic from a GPR instruction with Byte-sized
/// Immediate, encoded in a ModRM byte.
/// GPR always has an imm value as second operand.
macro_rules! modrmgpr1b {
    ($self:ident) => {{
        let (target, reg) = $self.parse_modrm_byte(Operand::Byte(0));
        let imm = $self.parse_byte();
        Self::modrm_reg_to_mnemonic(reg, target, Operand::Byte(imm))
    }};
}

#[macro_export]
/// Generate the resulting Mnemonic from a GPR instruction with Word-sized
/// Immediate, encoded in a ModRM byte.
/// GPR always has an imm value as second operand.
macro_rules! modrmgpr1v {
    ($self:ident) => {{
        let (target, reg) = $self.parse_modrm_byte(Operand::Word(0));
        let imm = $self.parse_word();
        Self::modrm_reg_to_mnemonic(reg, target, Operand::Word(imm))
    }};
}