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 | 80 |
1 files changed, 41 insertions, 39 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 index 6f0b33ca6..da07522e7 100644 --- a/vendor/github.com/klauspost/cpuid/v2/os_darwin_arm64.go +++ b/vendor/github.com/klauspost/cpuid/v2/os_darwin_arm64.go @@ -65,9 +65,16 @@ func sysctlGetInt64(unknown int, names ...string) int { return unknown } -func setFeature(c *CPUInfo, name string, feature FeatureID) { - c.featureSet.setIf(sysctlGetBool(name), feature) +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") @@ -87,41 +94,36 @@ func tryToFillCPUInfoFomSysctl(c *CPUInfo) { c.Cache.L2 = sysctlGetInt64(-1, "hw.l2cachesize") c.Cache.L3 = sysctlGetInt64(-1, "hw.l3cachesize") - // from https://developer.arm.com/downloads/-/exploration-tools/feature-names-for-a-profile - setFeature(c, "hw.optional.arm.FEAT_AES", AESARM) - setFeature(c, "hw.optional.AdvSIMD", ASIMD) - setFeature(c, "hw.optional.arm.FEAT_DotProd", ASIMDDP) - setFeature(c, "hw.optional.arm.FEAT_RDM", ASIMDRDM) - setFeature(c, "hw.optional.FEAT_CRC32", CRC32) - setFeature(c, "hw.optional.arm.FEAT_DPB", DCPOP) - // setFeature(c, "", EVTSTRM) - setFeature(c, "hw.optional.arm.FEAT_FCMA", FCMA) - setFeature(c, "hw.optional.arm.FEAT_FHM", FHM) - setFeature(c, "hw.optional.arm.FEAT_FP", FP) - setFeature(c, "hw.optional.arm.FEAT_FP16", FPHP) - setFeature(c, "hw.optional.arm.FEAT_PAuth", GPA) - setFeature(c, "hw.optional.arm.FEAT_RNG", RNDR) - setFeature(c, "hw.optional.arm.FEAT_JSCVT", JSCVT) - setFeature(c, "hw.optional.arm.FEAT_LRCPC", LRCPC) - setFeature(c, "hw.optional.arm.FEAT_PMULL", PMULL) - setFeature(c, "hw.optional.arm.FEAT_SHA1", SHA1) - setFeature(c, "hw.optional.arm.FEAT_SHA256", SHA2) - setFeature(c, "hw.optional.arm.FEAT_SHA3", SHA3) - setFeature(c, "hw.optional.arm.FEAT_SHA512", SHA512) - setFeature(c, "hw.optional.arm.FEAT_TLBIOS", TLB) - setFeature(c, "hw.optional.arm.FEAT_TLBIRANGE", TLB) - setFeature(c, "hw.optional.arm.FEAT_FlagM", TS) - setFeature(c, "hw.optional.arm.FEAT_FlagM2", TS) - // setFeature(c, "", SM3) - // setFeature(c, "", SM4) - setFeature(c, "hw.optional.arm.FEAT_SVE", SVE) - - // from empirical observation - setFeature(c, "hw.optional.AdvSIMD_HPFPCvt", ASIMDHP) - setFeature(c, "hw.optional.armv8_1_atomics", ATOMICS) - setFeature(c, "hw.optional.floatingpoint", FP) - setFeature(c, "hw.optional.armv8_2_sha3", SHA3) - setFeature(c, "hw.optional.armv8_2_sha512", SHA512) - setFeature(c, "hw.optional.armv8_3_compnum", FCMA) - setFeature(c, "hw.optional.armv8_crc32", CRC32) + // 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 } |