golang riscv64 代码
文件路径：/src/cmd/asm/internal/arch/riscv64.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 (
"cmd/internal/obj"
"cmd/internal/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
}