gtsocial-umbx

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s390x.go (1278B)

      1 // Copyright 2016 The Go Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style
      3 // license that can be found in the LICENSE file.
      4 
      5 // This file encapsulates some of the odd characteristics of the
      6 // s390x instruction set, to minimize its interaction
      7 // with the core of the assembler.
      8 
      9 package arch
     10 
     11 import (
     12 	"github.com/twitchyliquid64/golang-asm/obj/s390x"
     13 )
     14 
     15 func jumpS390x(word string) bool {
     16 	switch word {
     17 	case "BRC",
     18 		"BC",
     19 		"BCL",
     20 		"BEQ",
     21 		"BGE",
     22 		"BGT",
     23 		"BL",
     24 		"BLE",
     25 		"BLEU",
     26 		"BLT",
     27 		"BLTU",
     28 		"BNE",
     29 		"BR",
     30 		"BVC",
     31 		"BVS",
     32 		"BRCT",
     33 		"BRCTG",
     34 		"CMPBEQ",
     35 		"CMPBGE",
     36 		"CMPBGT",
     37 		"CMPBLE",
     38 		"CMPBLT",
     39 		"CMPBNE",
     40 		"CMPUBEQ",
     41 		"CMPUBGE",
     42 		"CMPUBGT",
     43 		"CMPUBLE",
     44 		"CMPUBLT",
     45 		"CMPUBNE",
     46 		"CRJ",
     47 		"CGRJ",
     48 		"CLRJ",
     49 		"CLGRJ",
     50 		"CIJ",
     51 		"CGIJ",
     52 		"CLIJ",
     53 		"CLGIJ",
     54 		"CALL",
     55 		"JMP":
     56 		return true
     57 	}
     58 	return false
     59 }
     60 
     61 func s390xRegisterNumber(name string, n int16) (int16, bool) {
     62 	switch name {
     63 	case "AR":
     64 		if 0 <= n && n <= 15 {
     65 			return s390x.REG_AR0 + n, true
     66 		}
     67 	case "F":
     68 		if 0 <= n && n <= 15 {
     69 			return s390x.REG_F0 + n, true
     70 		}
     71 	case "R":
     72 		if 0 <= n && n <= 15 {
     73 			return s390x.REG_R0 + n, true
     74 		}
     75 	case "V":
     76 		if 0 <= n && n <= 31 {
     77 			return s390x.REG_V0 + n, true
     78 		}
     79 	}
     80 	return 0, false
     81 }