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29 lines
842 B
29 lines
842 B
4 years ago
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use crsn::asm::data::{Rd, Wr};
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/// A low level instruction
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#[derive(Clone, Debug, Eq, PartialEq)]
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pub enum ArithOp {
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Test { a: Rd },
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Compare { a: Rd, b: Rd },
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Add { dst: Wr, a: Rd, b: Rd },
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Sub { dst: Wr, a: Rd, b: Rd },
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Mul { dst: Wr, a: Rd, b: Rd },
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Div { dst: Wr, rem: Wr, a: Rd, div: Rd },
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// "Mod" is functionally equivalent to "Div" with the result discarded,
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// but status flags are updated by the remainder
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Mod { dst: Wr, a: Rd, div: Rd },
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And { dst: Wr, a: Rd, b: Rd },
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Or { dst: Wr, a: Rd, b: Rd },
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Xor { dst: Wr, a: Rd, b: Rd },
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Cpl { dst: Wr, a: Rd },
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Rol { dst: Wr, a: Rd, n: Rd },
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// Rotate (with wrap-around)
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Ror { dst: Wr, a: Rd, n: Rd },
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Lsl { dst: Wr, a: Rd, n: Rd },
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// Shift
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Lsr { dst: Wr, a: Rd, n: Rd },
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Asr { dst: Wr, a: Rd, n: Rd },
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}
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