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