diff options
Diffstat (limited to 'vendor/github.com/klauspost/cpuid/v2/os_darwin_arm64.go')
| -rw-r--r-- | vendor/github.com/klauspost/cpuid/v2/os_darwin_arm64.go | 129 |
1 files changed, 0 insertions, 129 deletions
diff --git a/vendor/github.com/klauspost/cpuid/v2/os_darwin_arm64.go b/vendor/github.com/klauspost/cpuid/v2/os_darwin_arm64.go deleted file mode 100644 index da07522e7..000000000 --- a/vendor/github.com/klauspost/cpuid/v2/os_darwin_arm64.go +++ /dev/null @@ -1,129 +0,0 @@ -// Copyright (c) 2020 Klaus Post, released under MIT License. See LICENSE file. - -package cpuid - -import ( - "runtime" - "strings" - - "golang.org/x/sys/unix" -) - -func detectOS(c *CPUInfo) bool { - if runtime.GOOS != "ios" { - tryToFillCPUInfoFomSysctl(c) - } - // There are no hw.optional sysctl values for the below features on Mac OS 11.0 - // to detect their supported state dynamically. Assume the CPU features that - // Apple Silicon M1 supports to be available as a minimal set of features - // to all Go programs running on darwin/arm64. - // TODO: Add more if we know them. - c.featureSet.setIf(runtime.GOOS != "ios", AESARM, PMULL, SHA1, SHA2) - - return true -} - -func sysctlGetBool(name string) bool { - value, err := unix.SysctlUint32(name) - if err != nil { - return false - } - return value != 0 -} - -func sysctlGetString(name string) string { - value, err := unix.Sysctl(name) - if err != nil { - return "" - } - return value -} - -func sysctlGetInt(unknown int, names ...string) int { - for _, name := range names { - value, err := unix.SysctlUint32(name) - if err != nil { - continue - } - if value != 0 { - return int(value) - } - } - return unknown -} - -func sysctlGetInt64(unknown int, names ...string) int { - for _, name := range names { - value64, err := unix.SysctlUint64(name) - if err != nil { - continue - } - if int(value64) != unknown { - return int(value64) - } - } - return unknown -} - -func setFeature(c *CPUInfo, feature FeatureID, aliases ...string) { - for _, alias := range aliases { - set := sysctlGetBool(alias) - c.featureSet.setIf(set, feature) - if set { - break - } - } -} - -func tryToFillCPUInfoFomSysctl(c *CPUInfo) { - c.BrandName = sysctlGetString("machdep.cpu.brand_string") - - if len(c.BrandName) != 0 { - c.VendorString = strings.Fields(c.BrandName)[0] - } - - c.PhysicalCores = sysctlGetInt(runtime.NumCPU(), "hw.physicalcpu") - c.ThreadsPerCore = sysctlGetInt(1, "machdep.cpu.thread_count", "kern.num_threads") / - sysctlGetInt(1, "hw.physicalcpu") - c.LogicalCores = sysctlGetInt(runtime.NumCPU(), "machdep.cpu.core_count") - c.Family = sysctlGetInt(0, "machdep.cpu.family", "hw.cpufamily") - c.Model = sysctlGetInt(0, "machdep.cpu.model") - c.CacheLine = sysctlGetInt64(0, "hw.cachelinesize") - c.Cache.L1I = sysctlGetInt64(-1, "hw.l1icachesize") - c.Cache.L1D = sysctlGetInt64(-1, "hw.l1dcachesize") - c.Cache.L2 = sysctlGetInt64(-1, "hw.l2cachesize") - c.Cache.L3 = sysctlGetInt64(-1, "hw.l3cachesize") - - // ARM features: - // - // Note: On some Apple Silicon system, some feats have aliases. See: - // https://developer.apple.com/documentation/kernel/1387446-sysctlbyname/determining_instruction_set_characteristics - // When so, we look at all aliases and consider a feature available when at least one identifier matches. - setFeature(c, AESARM, "hw.optional.arm.FEAT_AES") // AES instructions - setFeature(c, ASIMD, "hw.optional.arm.AdvSIMD", "hw.optional.neon") // Advanced SIMD - setFeature(c, ASIMDDP, "hw.optional.arm.FEAT_DotProd") // SIMD Dot Product - setFeature(c, ASIMDHP, "hw.optional.arm.AdvSIMD_HPFPCvt", "hw.optional.neon_hpfp") // Advanced SIMD half-precision floating point - setFeature(c, ASIMDRDM, "hw.optional.arm.FEAT_RDM") // Rounding Double Multiply Accumulate/Subtract - setFeature(c, ATOMICS, "hw.optional.arm.FEAT_LSE", "hw.optional.armv8_1_atomics") // Large System Extensions (LSE) - setFeature(c, CRC32, "hw.optional.arm.FEAT_CRC32", "hw.optional.armv8_crc32") // CRC32/CRC32C instructions - setFeature(c, DCPOP, "hw.optional.arm.FEAT_DPB") // Data cache clean to Point of Persistence (DC CVAP) - setFeature(c, EVTSTRM, "hw.optional.arm.FEAT_ECV") // Generic timer - setFeature(c, FCMA, "hw.optional.arm.FEAT_FCMA", "hw.optional.armv8_3_compnum") // Floating point complex number addition and multiplication - setFeature(c, FHM, "hw.optional.armv8_2_fhm", "hw.optional.arm.FEAT_FHM") // FMLAL and FMLSL instructions - setFeature(c, FP, "hw.optional.floatingpoint") // Single-precision and double-precision floating point - setFeature(c, FPHP, "hw.optional.arm.FEAT_FP16", "hw.optional.neon_fp16") // Half-precision floating point - setFeature(c, GPA, "hw.optional.arm.FEAT_PAuth") // Generic Pointer Authentication - setFeature(c, JSCVT, "hw.optional.arm.FEAT_JSCVT") // Javascript-style double->int convert (FJCVTZS) - setFeature(c, LRCPC, "hw.optional.arm.FEAT_LRCPC") // Weaker release consistency (LDAPR, etc) - setFeature(c, PMULL, "hw.optional.arm.FEAT_PMULL") // Polynomial Multiply instructions (PMULL/PMULL2) - setFeature(c, RNDR, "hw.optional.arm.FEAT_RNG") // Random Number instructions - setFeature(c, TLB, "hw.optional.arm.FEAT_TLBIOS", "hw.optional.arm.FEAT_TLBIRANGE") // Outer Shareable and TLB range maintenance instructions - setFeature(c, TS, "hw.optional.arm.FEAT_FlagM", "hw.optional.arm.FEAT_FlagM2") // Flag manipulation instructions - setFeature(c, SHA1, "hw.optional.arm.FEAT_SHA1") // SHA-1 instructions (SHA1C, etc) - setFeature(c, SHA2, "hw.optional.arm.FEAT_SHA256") // SHA-2 instructions (SHA256H, etc) - setFeature(c, SHA3, "hw.optional.arm.FEAT_SHA3") // SHA-3 instructions (EOR3, RAXI, XAR, BCAX) - setFeature(c, SHA512, "hw.optional.arm.FEAT_SHA512") // SHA512 instructions - setFeature(c, SM3, "hw.optional.arm.FEAT_SM3") // SM3 instructions - setFeature(c, SM4, "hw.optional.arm.FEAT_SM4") // SM4 instructions - setFeature(c, SVE, "hw.optional.arm.FEAT_SVE") // Scalable Vector Extension -} |