1 // Copyright 2017 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 // +build ppc64 ppc64le 6 7 package cpu 8 9 const CacheLineSize = 128 10 11 // ppc64x doesn't have a 'cpuid' equivalent, so we rely on HWCAP/HWCAP2. 12 // These are linknamed in runtime/os_linux_ppc64x.go and are initialized by 13 // archauxv(). 14 var ppc64x_hwcap uint 15 var ppc64x_hwcap2 uint 16 17 // HWCAP/HWCAP2 bits. These are exposed by the kernel. 18 const ( 19 // ISA Level 20 _PPC_FEATURE2_ARCH_2_07 = 0x80000000 21 _PPC_FEATURE2_ARCH_3_00 = 0x00800000 22 23 // CPU features 24 _PPC_FEATURE_HAS_ALTIVEC = 0x10000000 25 _PPC_FEATURE_HAS_DFP = 0x00000400 26 _PPC_FEATURE_HAS_VSX = 0x00000080 27 _PPC_FEATURE2_HAS_HTM = 0x40000000 28 _PPC_FEATURE2_HAS_ISEL = 0x08000000 29 _PPC_FEATURE2_HAS_VEC_CRYPTO = 0x02000000 30 _PPC_FEATURE2_HTM_NOSC = 0x01000000 31 _PPC_FEATURE2_DARN = 0x00200000 32 _PPC_FEATURE2_SCV = 0x00100000 33 ) 34 35 func init() { 36 // HWCAP feature bits 37 PPC64.HasVMX = isSet(ppc64x_hwcap, _PPC_FEATURE_HAS_ALTIVEC) 38 PPC64.HasDFP = isSet(ppc64x_hwcap, _PPC_FEATURE_HAS_DFP) 39 PPC64.HasVSX = isSet(ppc64x_hwcap, _PPC_FEATURE_HAS_VSX) 40 41 // HWCAP2 feature bits 42 PPC64.IsPOWER8 = isSet(ppc64x_hwcap2, _PPC_FEATURE2_ARCH_2_07) 43 PPC64.HasHTM = isSet(ppc64x_hwcap2, _PPC_FEATURE2_HAS_HTM) 44 PPC64.HasISEL = isSet(ppc64x_hwcap2, _PPC_FEATURE2_HAS_ISEL) 45 PPC64.HasVCRYPTO = isSet(ppc64x_hwcap2, _PPC_FEATURE2_HAS_VEC_CRYPTO) 46 PPC64.HasHTMNOSC = isSet(ppc64x_hwcap2, _PPC_FEATURE2_HTM_NOSC) 47 PPC64.IsPOWER9 = isSet(ppc64x_hwcap2, _PPC_FEATURE2_ARCH_3_00) 48 PPC64.HasDARN = isSet(ppc64x_hwcap2, _PPC_FEATURE2_DARN) 49 PPC64.HasSCV = isSet(ppc64x_hwcap2, _PPC_FEATURE2_SCV) 50 } 51 52 func isSet(hwc uint, value uint) bool { 53 return hwc&value != 0 54 } 55
