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81 lines
1.2 KiB
Go
81 lines
1.2 KiB
Go
// Copyright 2016 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
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// s390x instruction set, to minimize its interaction
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// with the core of the assembler.
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package arch
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import (
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"github.com/twitchyliquid64/golang-asm/obj/s390x"
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)
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func jumpS390x(word string) bool {
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switch word {
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case "BRC",
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"BC",
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"BCL",
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"BEQ",
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"BGE",
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"BGT",
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"BL",
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"BLE",
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"BLEU",
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"BLT",
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"BLTU",
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"BNE",
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"BR",
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"BVC",
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"BVS",
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"BRCT",
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"BRCTG",
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"CMPBEQ",
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"CMPBGE",
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"CMPBGT",
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"CMPBLE",
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"CMPBLT",
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"CMPBNE",
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"CMPUBEQ",
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"CMPUBGE",
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"CMPUBGT",
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"CMPUBLE",
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"CMPUBLT",
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"CMPUBNE",
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"CRJ",
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"CGRJ",
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"CLRJ",
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"CLGRJ",
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"CIJ",
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"CGIJ",
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"CLIJ",
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"CLGIJ",
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"CALL",
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"JMP":
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return true
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}
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return false
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}
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func s390xRegisterNumber(name string, n int16) (int16, bool) {
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switch name {
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case "AR":
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if 0 <= n && n <= 15 {
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return s390x.REG_AR0 + n, true
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}
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case "F":
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if 0 <= n && n <= 15 {
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return s390x.REG_F0 + n, true
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}
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case "R":
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if 0 <= n && n <= 15 {
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return s390x.REG_R0 + n, true
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}
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case "V":
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if 0 <= n && n <= 31 {
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return s390x.REG_V0 + n, true
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}
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}
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return 0, false
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}
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