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43 lines
580 B
Go
43 lines
580 B
Go
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package asm
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import (
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"fmt"
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)
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// Register is the source or destination of most operations.
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type Register uint8
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// R0 contains return values.
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const R0 Register = 0
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// Registers for function arguments.
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const (
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R1 Register = R0 + 1 + iota
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R2
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R3
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R4
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R5
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)
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// Callee saved registers preserved by function calls.
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const (
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R6 Register = R5 + 1 + iota
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R7
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R8
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R9
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)
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// Read-only frame pointer to access stack.
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const (
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R10 Register = R9 + 1
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RFP = R10
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)
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func (r Register) String() string {
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v := uint8(r)
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if v == 10 {
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return "rfp"
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}
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return fmt.Sprintf("r%d", v)
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}
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