| // 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. |
| |
| package cpu |
| |
| const cacheLineSize = 64 |
| |
| // HWCAP/HWCAP2 bits. These are exposed by Linux. |
| 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 |
| ) |
| |
| func doinit() { |
| // HWCAP feature bits |
| ARM64.HasFP = isSet(hwCap, hwcap_FP) |
| ARM64.HasASIMD = isSet(hwCap, hwcap_ASIMD) |
| ARM64.HasEVTSTRM = isSet(hwCap, hwcap_EVTSTRM) |
| ARM64.HasAES = isSet(hwCap, hwcap_AES) |
| ARM64.HasPMULL = isSet(hwCap, hwcap_PMULL) |
| ARM64.HasSHA1 = isSet(hwCap, hwcap_SHA1) |
| ARM64.HasSHA2 = isSet(hwCap, hwcap_SHA2) |
| ARM64.HasCRC32 = isSet(hwCap, hwcap_CRC32) |
| ARM64.HasATOMICS = isSet(hwCap, hwcap_ATOMICS) |
| ARM64.HasFPHP = isSet(hwCap, hwcap_FPHP) |
| ARM64.HasASIMDHP = isSet(hwCap, hwcap_ASIMDHP) |
| ARM64.HasCPUID = isSet(hwCap, hwcap_CPUID) |
| ARM64.HasASIMDRDM = isSet(hwCap, hwcap_ASIMDRDM) |
| ARM64.HasJSCVT = isSet(hwCap, hwcap_JSCVT) |
| ARM64.HasFCMA = isSet(hwCap, hwcap_FCMA) |
| ARM64.HasLRCPC = isSet(hwCap, hwcap_LRCPC) |
| ARM64.HasDCPOP = isSet(hwCap, hwcap_DCPOP) |
| ARM64.HasSHA3 = isSet(hwCap, hwcap_SHA3) |
| ARM64.HasSM3 = isSet(hwCap, hwcap_SM3) |
| ARM64.HasSM4 = isSet(hwCap, hwcap_SM4) |
| ARM64.HasASIMDDP = isSet(hwCap, hwcap_ASIMDDP) |
| ARM64.HasSHA512 = isSet(hwCap, hwcap_SHA512) |
| ARM64.HasSVE = isSet(hwCap, hwcap_SVE) |
| ARM64.HasASIMDFHM = isSet(hwCap, hwcap_ASIMDFHM) |
| } |
| |
| func isSet(hwc uint, value uint) bool { |
| return hwc&value != 0 |
| } |
