diff options
Diffstat (limited to 'src/internal/cpu/cpu_ppc64x.go')
| -rw-r--r-- | src/internal/cpu/cpu_ppc64x.go | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/src/internal/cpu/cpu_ppc64x.go b/src/internal/cpu/cpu_ppc64x.go new file mode 100644 index 0000000000..7f093723b2 --- /dev/null +++ b/src/internal/cpu/cpu_ppc64x.go @@ -0,0 +1,54 @@ +// Copyright 2017 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. + +// +build ppc64 ppc64le + +package cpu + +const CacheLineSize = 128 + +// ppc64x doesn't have a 'cpuid' equivalent, so we rely on HWCAP/HWCAP2. +// These are linknamed in runtime/os_linux_ppc64x.go and are initialized by +// archauxv(). +var ppc64x_hwcap uint +var ppc64x_hwcap2 uint + +// HWCAP/HWCAP2 bits. These are exposed by the kernel. +const ( + // ISA Level + _PPC_FEATURE2_ARCH_2_07 = 0x80000000 + _PPC_FEATURE2_ARCH_3_00 = 0x00800000 + + // CPU features + _PPC_FEATURE_HAS_ALTIVEC = 0x10000000 + _PPC_FEATURE_HAS_DFP = 0x00000400 + _PPC_FEATURE_HAS_VSX = 0x00000080 + _PPC_FEATURE2_HAS_HTM = 0x40000000 + _PPC_FEATURE2_HAS_ISEL = 0x08000000 + _PPC_FEATURE2_HAS_VEC_CRYPTO = 0x02000000 + _PPC_FEATURE2_HTM_NOSC = 0x01000000 + _PPC_FEATURE2_DARN = 0x00200000 + _PPC_FEATURE2_SCV = 0x00100000 +) + +func init() { + // HWCAP feature bits + PPC64.HasVMX = isSet(ppc64x_hwcap, _PPC_FEATURE_HAS_ALTIVEC) + PPC64.HasDFP = isSet(ppc64x_hwcap, _PPC_FEATURE_HAS_DFP) + PPC64.HasVSX = isSet(ppc64x_hwcap, _PPC_FEATURE_HAS_VSX) + + // HWCAP2 feature bits + PPC64.IsPOWER8 = isSet(ppc64x_hwcap2, _PPC_FEATURE2_ARCH_2_07) + PPC64.HasHTM = isSet(ppc64x_hwcap2, _PPC_FEATURE2_HAS_HTM) + PPC64.HasISEL = isSet(ppc64x_hwcap2, _PPC_FEATURE2_HAS_ISEL) + PPC64.HasVCRYPTO = isSet(ppc64x_hwcap2, _PPC_FEATURE2_HAS_VEC_CRYPTO) + PPC64.HasHTMNOSC = isSet(ppc64x_hwcap2, _PPC_FEATURE2_HTM_NOSC) + PPC64.IsPOWER9 = isSet(ppc64x_hwcap2, _PPC_FEATURE2_ARCH_3_00) + PPC64.HasDARN = isSet(ppc64x_hwcap2, _PPC_FEATURE2_DARN) + PPC64.HasSCV = isSet(ppc64x_hwcap2, _PPC_FEATURE2_SCV) +} + +func isSet(hwc uint, value uint) bool { + return hwc&value != 0 +} |