diff options
Diffstat (limited to 'vendor/github.com/klauspost/cpuid/v2/os_linux_arm64.go')
| -rw-r--r-- | vendor/github.com/klauspost/cpuid/v2/os_linux_arm64.go | 208 |
1 files changed, 0 insertions, 208 deletions
diff --git a/vendor/github.com/klauspost/cpuid/v2/os_linux_arm64.go b/vendor/github.com/klauspost/cpuid/v2/os_linux_arm64.go deleted file mode 100644 index d96d24438..000000000 --- a/vendor/github.com/klauspost/cpuid/v2/os_linux_arm64.go +++ /dev/null @@ -1,208 +0,0 @@ -// Copyright (c) 2020 Klaus Post, released under MIT License. See LICENSE file. - -// Copyright 2018 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 located -// here https://github.com/golang/sys/blob/master/LICENSE - -package cpuid - -import ( - "encoding/binary" - "io/ioutil" - "runtime" -) - -// HWCAP bits. -const ( - hwcap_FP = 1 << 0 - hwcap_ASIMD = 1 << 1 - hwcap_EVTSTRM = 1 << 2 - hwcap_AES = 1 << 3 - hwcap_PMULL = 1 << 4 - hwcap_SHA1 = 1 << 5 - hwcap_SHA2 = 1 << 6 - hwcap_CRC32 = 1 << 7 - hwcap_ATOMICS = 1 << 8 - hwcap_FPHP = 1 << 9 - hwcap_ASIMDHP = 1 << 10 - hwcap_CPUID = 1 << 11 - hwcap_ASIMDRDM = 1 << 12 - hwcap_JSCVT = 1 << 13 - hwcap_FCMA = 1 << 14 - hwcap_LRCPC = 1 << 15 - hwcap_DCPOP = 1 << 16 - hwcap_SHA3 = 1 << 17 - hwcap_SM3 = 1 << 18 - hwcap_SM4 = 1 << 19 - hwcap_ASIMDDP = 1 << 20 - hwcap_SHA512 = 1 << 21 - hwcap_SVE = 1 << 22 - hwcap_ASIMDFHM = 1 << 23 - hwcap_DIT = 1 << 24 - hwcap_USCAT = 1 << 25 - hwcap_ILRCPC = 1 << 26 - hwcap_FLAGM = 1 << 27 - hwcap_SSBS = 1 << 28 - hwcap_SB = 1 << 29 - hwcap_PACA = 1 << 30 - hwcap_PACG = 1 << 31 - hwcap_GCS = 1 << 32 - - hwcap2_DCPODP = 1 << 0 - hwcap2_SVE2 = 1 << 1 - hwcap2_SVEAES = 1 << 2 - hwcap2_SVEPMULL = 1 << 3 - hwcap2_SVEBITPERM = 1 << 4 - hwcap2_SVESHA3 = 1 << 5 - hwcap2_SVESM4 = 1 << 6 - hwcap2_FLAGM2 = 1 << 7 - hwcap2_FRINT = 1 << 8 - hwcap2_SVEI8MM = 1 << 9 - hwcap2_SVEF32MM = 1 << 10 - hwcap2_SVEF64MM = 1 << 11 - hwcap2_SVEBF16 = 1 << 12 - hwcap2_I8MM = 1 << 13 - hwcap2_BF16 = 1 << 14 - hwcap2_DGH = 1 << 15 - hwcap2_RNG = 1 << 16 - hwcap2_BTI = 1 << 17 - hwcap2_MTE = 1 << 18 - hwcap2_ECV = 1 << 19 - hwcap2_AFP = 1 << 20 - hwcap2_RPRES = 1 << 21 - hwcap2_MTE3 = 1 << 22 - hwcap2_SME = 1 << 23 - hwcap2_SME_I16I64 = 1 << 24 - hwcap2_SME_F64F64 = 1 << 25 - hwcap2_SME_I8I32 = 1 << 26 - hwcap2_SME_F16F32 = 1 << 27 - hwcap2_SME_B16F32 = 1 << 28 - hwcap2_SME_F32F32 = 1 << 29 - hwcap2_SME_FA64 = 1 << 30 - hwcap2_WFXT = 1 << 31 - hwcap2_EBF16 = 1 << 32 - hwcap2_SVE_EBF16 = 1 << 33 - hwcap2_CSSC = 1 << 34 - hwcap2_RPRFM = 1 << 35 - hwcap2_SVE2P1 = 1 << 36 - hwcap2_SME2 = 1 << 37 - hwcap2_SME2P1 = 1 << 38 - hwcap2_SME_I16I32 = 1 << 39 - hwcap2_SME_BI32I32 = 1 << 40 - hwcap2_SME_B16B16 = 1 << 41 - hwcap2_SME_F16F16 = 1 << 42 - hwcap2_MOPS = 1 << 43 - hwcap2_HBC = 1 << 44 - hwcap2_SVE_B16B16 = 1 << 45 - hwcap2_LRCPC3 = 1 << 46 - hwcap2_LSE128 = 1 << 47 - hwcap2_FPMR = 1 << 48 - hwcap2_LUT = 1 << 49 - hwcap2_FAMINMAX = 1 << 50 - hwcap2_F8CVT = 1 << 51 - hwcap2_F8FMA = 1 << 52 - hwcap2_F8DP4 = 1 << 53 - hwcap2_F8DP2 = 1 << 54 - hwcap2_F8E4M3 = 1 << 55 - hwcap2_F8E5M2 = 1 << 56 - hwcap2_SME_LUTV2 = 1 << 57 - hwcap2_SME_F8F16 = 1 << 58 - hwcap2_SME_F8F32 = 1 << 59 - hwcap2_SME_SF8FMA = 1 << 60 - hwcap2_SME_SF8DP4 = 1 << 61 - hwcap2_SME_SF8DP2 = 1 << 62 - hwcap2_POE = 1 << 63 -) - -func detectOS(c *CPUInfo) bool { - // For now assuming no hyperthreading is reasonable. - c.LogicalCores = runtime.NumCPU() - c.PhysicalCores = c.LogicalCores - c.ThreadsPerCore = 1 - if hwcap == 0 { - // We did not get values from the runtime. - // Try reading /proc/self/auxv - - // From https://github.com/golang/sys - const ( - _AT_HWCAP = 16 - _AT_HWCAP2 = 26 - - uintSize = int(32 << (^uint(0) >> 63)) - ) - - buf, err := ioutil.ReadFile("/proc/self/auxv") - if err != nil { - // e.g. on android /proc/self/auxv is not accessible, so silently - // ignore the error and leave Initialized = false. On some - // architectures (e.g. arm64) doinit() implements a fallback - // readout and will set Initialized = true again. - return false - } - bo := binary.LittleEndian - for len(buf) >= 2*(uintSize/8) { - var tag, val uint - switch uintSize { - case 32: - tag = uint(bo.Uint32(buf[0:])) - val = uint(bo.Uint32(buf[4:])) - buf = buf[8:] - case 64: - tag = uint(bo.Uint64(buf[0:])) - val = uint(bo.Uint64(buf[8:])) - buf = buf[16:] - } - switch tag { - case _AT_HWCAP: - hwcap = val - case _AT_HWCAP2: - // Not used - } - } - if hwcap == 0 { - return false - } - } - - // HWCap was populated by the runtime from the auxiliary vector. - // Use HWCap information since reading aarch64 system registers - // is not supported in user space on older linux kernels. - c.featureSet.setIf(isSet(hwcap, hwcap_AES), AESARM) - c.featureSet.setIf(isSet(hwcap, hwcap_ASIMD), ASIMD) - c.featureSet.setIf(isSet(hwcap, hwcap_ASIMDDP), ASIMDDP) - c.featureSet.setIf(isSet(hwcap, hwcap_ASIMDHP), ASIMDHP) - c.featureSet.setIf(isSet(hwcap, hwcap_ASIMDRDM), ASIMDRDM) - c.featureSet.setIf(isSet(hwcap, hwcap_CPUID), ARMCPUID) - c.featureSet.setIf(isSet(hwcap, hwcap_CRC32), CRC32) - c.featureSet.setIf(isSet(hwcap, hwcap_DCPOP), DCPOP) - c.featureSet.setIf(isSet(hwcap, hwcap_EVTSTRM), EVTSTRM) - c.featureSet.setIf(isSet(hwcap, hwcap_FCMA), FCMA) - c.featureSet.setIf(isSet(hwcap, hwcap_ASIMDFHM), FHM) - c.featureSet.setIf(isSet(hwcap, hwcap_FP), FP) - c.featureSet.setIf(isSet(hwcap, hwcap_FPHP), FPHP) - c.featureSet.setIf(isSet(hwcap, hwcap_JSCVT), JSCVT) - c.featureSet.setIf(isSet(hwcap, hwcap_LRCPC), LRCPC) - c.featureSet.setIf(isSet(hwcap, hwcap_PMULL), PMULL) - c.featureSet.setIf(isSet(hwcap, hwcap2_RNG), RNDR) - // c.featureSet.setIf(isSet(hwcap, hwcap_), TLB) - // c.featureSet.setIf(isSet(hwcap, hwcap_), TS) - c.featureSet.setIf(isSet(hwcap, hwcap_SHA1), SHA1) - c.featureSet.setIf(isSet(hwcap, hwcap_SHA2), SHA2) - c.featureSet.setIf(isSet(hwcap, hwcap_SHA3), SHA3) - c.featureSet.setIf(isSet(hwcap, hwcap_SHA512), SHA512) - c.featureSet.setIf(isSet(hwcap, hwcap_SM3), SM3) - c.featureSet.setIf(isSet(hwcap, hwcap_SM4), SM4) - c.featureSet.setIf(isSet(hwcap, hwcap_SVE), SVE) - - // The Samsung S9+ kernel reports support for atomics, but not all cores - // actually support them, resulting in SIGILL. See issue #28431. - // TODO(elias.naur): Only disable the optimization on bad chipsets on android. - c.featureSet.setIf(isSet(hwcap, hwcap_ATOMICS) && runtime.GOOS != "android", ATOMICS) - - return true -} - -func isSet(hwc uint, value uint) bool { - return hwc&value != 0 -} |