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 5package runtime 6 7import "internal/cpu" 8 9const ( 10 // bit masks taken from bits/hwcap.h 11 _HWCAP_S390_ZARCH = 2 12 _HWCAP_S390_STFLE = 4 13 _HWCAP_S390_MSA = 8 14 _HWCAP_S390_LDISP = 16 15 _HWCAP_S390_EIMM = 32 16 _HWCAP_S390_DFP = 64 17 _HWCAP_S390_ETF3EH = 256 18 _HWCAP_S390_VX = 2048 // vector facility 19 _HWCAP_S390_VXE = 8192 20) 21 22func archauxv(tag, val uintptr) { 23 switch tag { 24 case _AT_HWCAP: // CPU capability bit flags 25 cpu.S390X.HasZARCH = val&_HWCAP_S390_ZARCH != 0 26 cpu.S390X.HasSTFLE = val&_HWCAP_S390_STFLE != 0 27 cpu.S390X.HasLDISP = val&_HWCAP_S390_LDISP != 0 28 cpu.S390X.HasEIMM = val&_HWCAP_S390_EIMM != 0 29 cpu.S390X.HasDFP = val&_HWCAP_S390_DFP != 0 30 cpu.S390X.HasETF3EH = val&_HWCAP_S390_ETF3EH != 0 31 cpu.S390X.HasMSA = val&_HWCAP_S390_MSA != 0 32 cpu.S390X.HasVX = val&_HWCAP_S390_VX != 0 33 cpu.S390X.HasVXE = val&_HWCAP_S390_VXE != 0 34 } 35} 36