64 lines
805 B
Go
64 lines
805 B
Go
package inst
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//go:generate avogen -data ../data -output ztable.go godata
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type Instruction struct {
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Opcode string
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Summary string
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Forms []Form
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}
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type Form struct {
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ISA []string
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Operands []Operand
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ImplicitOperands []ImplicitOperand
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}
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type Operand struct {
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Type string
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Action Action
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}
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type ImplicitOperand struct {
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Register string
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Action Action
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}
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type Action uint8
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const (
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R Action = 0x1
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W Action = 0x2
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RW Action = R | W
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)
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func ActionFromReadWrite(r, w bool) Action {
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var a Action
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if r {
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a |= R
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}
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if w {
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a |= W
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}
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return a
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}
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func (a Action) Read() bool {
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return (a & R) != 0
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}
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func (a Action) Write() bool {
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return (a & W) != 0
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}
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func (a Action) String() string {
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s := ""
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if a.Read() {
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s += "r"
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}
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if a.Write() {
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s += "w"
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}
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return s
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}
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