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