1 // Copyright 2018 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
7 // HWCAP/HWCAP2 bits. These are exposed by Linux.
11 hwcap_EVTSTRM = 1 << 2
17 hwcap_ATOMICS = 1 << 8
19 hwcap_ASIMDHP = 1 << 10
21 hwcap_ASIMDRDM = 1 << 12
29 hwcap_ASIMDDP = 1 << 20
30 hwcap_SHA512 = 1 << 21
32 hwcap_ASIMDFHM = 1 << 23
36 if err := readHWCAP(); err != nil {
37 // failed to read /proc/self/auxv, try reading registers directly
43 ARM64.HasFP = isSet(hwCap, hwcap_FP)
44 ARM64.HasASIMD = isSet(hwCap, hwcap_ASIMD)
45 ARM64.HasEVTSTRM = isSet(hwCap, hwcap_EVTSTRM)
46 ARM64.HasAES = isSet(hwCap, hwcap_AES)
47 ARM64.HasPMULL = isSet(hwCap, hwcap_PMULL)
48 ARM64.HasSHA1 = isSet(hwCap, hwcap_SHA1)
49 ARM64.HasSHA2 = isSet(hwCap, hwcap_SHA2)
50 ARM64.HasCRC32 = isSet(hwCap, hwcap_CRC32)
51 ARM64.HasATOMICS = isSet(hwCap, hwcap_ATOMICS)
52 ARM64.HasFPHP = isSet(hwCap, hwcap_FPHP)
53 ARM64.HasASIMDHP = isSet(hwCap, hwcap_ASIMDHP)
54 ARM64.HasCPUID = isSet(hwCap, hwcap_CPUID)
55 ARM64.HasASIMDRDM = isSet(hwCap, hwcap_ASIMDRDM)
56 ARM64.HasJSCVT = isSet(hwCap, hwcap_JSCVT)
57 ARM64.HasFCMA = isSet(hwCap, hwcap_FCMA)
58 ARM64.HasLRCPC = isSet(hwCap, hwcap_LRCPC)
59 ARM64.HasDCPOP = isSet(hwCap, hwcap_DCPOP)
60 ARM64.HasSHA3 = isSet(hwCap, hwcap_SHA3)
61 ARM64.HasSM3 = isSet(hwCap, hwcap_SM3)
62 ARM64.HasSM4 = isSet(hwCap, hwcap_SM4)
63 ARM64.HasASIMDDP = isSet(hwCap, hwcap_ASIMDDP)
64 ARM64.HasSHA512 = isSet(hwCap, hwcap_SHA512)
65 ARM64.HasSVE = isSet(hwCap, hwcap_SVE)
66 ARM64.HasASIMDFHM = isSet(hwCap, hwcap_ASIMDFHM)
69 func isSet(hwc uint, value uint) bool {