29 lines
993 B
Go
29 lines
993 B
Go
// Copyright 2020 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
// This file encapsulates some of the odd characteristics of the RISCV64
|
|
// instruction set, to minimize its interaction with the core of the
|
|
// assembler.
|
|
|
|
package arch
|
|
|
|
import (
|
|
"github.com/twitchyliquid64/golang-asm/obj"
|
|
"github.com/twitchyliquid64/golang-asm/obj/riscv"
|
|
)
|
|
|
|
// IsRISCV64AMO reports whether the op (as defined by a riscv.A*
|
|
// constant) is one of the AMO instructions that requires special
|
|
// handling.
|
|
func IsRISCV64AMO(op obj.As) bool {
|
|
switch op {
|
|
case riscv.ASCW, riscv.ASCD, riscv.AAMOSWAPW, riscv.AAMOSWAPD, riscv.AAMOADDW, riscv.AAMOADDD,
|
|
riscv.AAMOANDW, riscv.AAMOANDD, riscv.AAMOORW, riscv.AAMOORD, riscv.AAMOXORW, riscv.AAMOXORD,
|
|
riscv.AAMOMINW, riscv.AAMOMIND, riscv.AAMOMINUW, riscv.AAMOMINUD,
|
|
riscv.AAMOMAXW, riscv.AAMOMAXD, riscv.AAMOMAXUW, riscv.AAMOMAXUD:
|
|
return true
|
|
}
|
|
return false
|
|
}
|