Croissant Runtime
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crsn/crsn_arith/src/defs.rs

48 lines
1.4 KiB

use crsn::asm::data::{Rd, Wr};
/// A low level instruction
#[derive(Clone, Debug, Eq, PartialEq)]
pub enum ArithOp {
Test { a: Rd },
Compare { a: Rd, b: Rd },
RangeTest { val: Rd, a: Rd, b: Rd },
Rng { dst: Wr, min: Rd, max: Rd },
Sw32 { dst: Wr, src: Rd },
Sw16 { dst: Wr, src: Rd },
Sw8 { dst: Wr, src: Rd },
Rev { dst: Wr, src: Rd },
Rbit { dst: Wr, src: Rd },
Clz { dst: Wr, src: Rd },
Clz32 { dst: Wr, src: Rd },
Clz16 { dst: Wr, src: Rd },
Clz8 { dst: Wr, src: Rd },
Clo { dst: Wr, src: Rd },
Clo32 { dst: Wr, src: Rd },
Clo16 { dst: Wr, src: Rd },
Clo8 { dst: Wr, src: Rd },
SignExtend32 { dst: Wr, src: Rd },
SignExtend16 { dst: Wr, src: Rd },
SignExtend8 { dst: Wr, src: Rd },
Add { dst: Wr, a: Rd, b: Rd },
Sub { dst: Wr, a: Rd, b: Rd },
Mul { dst: Wr, a: Rd, b: Rd },
Div { dst: Wr, rem: Wr, a: Rd, div: Rd },
// "Mod" is functionally equivalent to "Div" with the result discarded,
// but status flags are updated by the remainder
Mod { dst: Wr, a: Rd, div: Rd },
And { dst: Wr, a: Rd, b: Rd },
Or { dst: Wr, a: Rd, b: Rd },
Xor { dst: Wr, a: Rd, b: Rd },
Cpl { dst: Wr, a: Rd },
Rol { dst: Wr, a: Rd, n: Rd },
// Rotate (with wrap-around)
Ror { dst: Wr, a: Rd, n: Rd },
Lsl { dst: Wr, a: Rd, n: Rd },
// Shift
Lsr { dst: Wr, a: Rd, n: Rd },
Asr { dst: Wr, a: Rd, n: Rd },
}