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// 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 hwcap uint
var 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 doinit() {
options = []option{
{"htm", &PPC64.HasHTM},
{"htmnosc", &PPC64.HasHTMNOSC},
{"darn", &PPC64.HasDARN},
{"scv", &PPC64.HasSCV},
// These capabilities should always be enabled on ppc64 and ppc64le:
// {"vmx", &PPC64.HasVMX},
// {"dfp", &PPC64.HasDFP},
// {"vsx", &PPC64.HasVSX},
// {"isel", &PPC64.HasISEL},
// {"vcrypto", &PPC64.HasVCRYPTO},
}
// HWCAP feature bits
PPC64.HasVMX = isSet(hwcap, _PPC_FEATURE_HAS_ALTIVEC)
PPC64.HasDFP = isSet(hwcap, _PPC_FEATURE_HAS_DFP)
PPC64.HasVSX = isSet(hwcap, _PPC_FEATURE_HAS_VSX)
// HWCAP2 feature bits
PPC64.IsPOWER8 = isSet(hwcap2, _PPC_FEATURE2_ARCH_2_07)
PPC64.HasHTM = isSet(hwcap2, _PPC_FEATURE2_HAS_HTM)
PPC64.HasISEL = isSet(hwcap2, _PPC_FEATURE2_HAS_ISEL)
PPC64.HasVCRYPTO = isSet(hwcap2, _PPC_FEATURE2_HAS_VEC_CRYPTO)
PPC64.HasHTMNOSC = isSet(hwcap2, _PPC_FEATURE2_HTM_NOSC)
PPC64.IsPOWER9 = isSet(hwcap2, _PPC_FEATURE2_ARCH_3_00)
PPC64.HasDARN = isSet(hwcap2, _PPC_FEATURE2_DARN)
PPC64.HasSCV = isSet(hwcap2, _PPC_FEATURE2_SCV)
}
func isSet(hwc uint, value uint) bool {
return hwc&value != 0
}
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