diff options
Diffstat (limited to 'vendor/golang.org/x/sys/cpu/cpu_x86.go')
| -rw-r--r-- | vendor/golang.org/x/sys/cpu/cpu_x86.go | 83 |
1 files changed, 80 insertions, 3 deletions
diff --git a/vendor/golang.org/x/sys/cpu/cpu_x86.go b/vendor/golang.org/x/sys/cpu/cpu_x86.go index d70d317..fd380c0 100644 --- a/vendor/golang.org/x/sys/cpu/cpu_x86.go +++ b/vendor/golang.org/x/sys/cpu/cpu_x86.go @@ -2,13 +2,62 @@ // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. +//go:build 386 || amd64 || amd64p32 // +build 386 amd64 amd64p32 package cpu +import "runtime" + const cacheLineSize = 64 -func init() { +func initOptions() { + options = []option{ + {Name: "adx", Feature: &X86.HasADX}, + {Name: "aes", Feature: &X86.HasAES}, + {Name: "avx", Feature: &X86.HasAVX}, + {Name: "avx2", Feature: &X86.HasAVX2}, + {Name: "avx512", Feature: &X86.HasAVX512}, + {Name: "avx512f", Feature: &X86.HasAVX512F}, + {Name: "avx512cd", Feature: &X86.HasAVX512CD}, + {Name: "avx512er", Feature: &X86.HasAVX512ER}, + {Name: "avx512pf", Feature: &X86.HasAVX512PF}, + {Name: "avx512vl", Feature: &X86.HasAVX512VL}, + {Name: "avx512bw", Feature: &X86.HasAVX512BW}, + {Name: "avx512dq", Feature: &X86.HasAVX512DQ}, + {Name: "avx512ifma", Feature: &X86.HasAVX512IFMA}, + {Name: "avx512vbmi", Feature: &X86.HasAVX512VBMI}, + {Name: "avx512vnniw", Feature: &X86.HasAVX5124VNNIW}, + {Name: "avx5124fmaps", Feature: &X86.HasAVX5124FMAPS}, + {Name: "avx512vpopcntdq", Feature: &X86.HasAVX512VPOPCNTDQ}, + {Name: "avx512vpclmulqdq", Feature: &X86.HasAVX512VPCLMULQDQ}, + {Name: "avx512vnni", Feature: &X86.HasAVX512VNNI}, + {Name: "avx512gfni", Feature: &X86.HasAVX512GFNI}, + {Name: "avx512vaes", Feature: &X86.HasAVX512VAES}, + {Name: "avx512vbmi2", Feature: &X86.HasAVX512VBMI2}, + {Name: "avx512bitalg", Feature: &X86.HasAVX512BITALG}, + {Name: "avx512bf16", Feature: &X86.HasAVX512BF16}, + {Name: "bmi1", Feature: &X86.HasBMI1}, + {Name: "bmi2", Feature: &X86.HasBMI2}, + {Name: "erms", Feature: &X86.HasERMS}, + {Name: "fma", Feature: &X86.HasFMA}, + {Name: "osxsave", Feature: &X86.HasOSXSAVE}, + {Name: "pclmulqdq", Feature: &X86.HasPCLMULQDQ}, + {Name: "popcnt", Feature: &X86.HasPOPCNT}, + {Name: "rdrand", Feature: &X86.HasRDRAND}, + {Name: "rdseed", Feature: &X86.HasRDSEED}, + {Name: "sse3", Feature: &X86.HasSSE3}, + {Name: "sse41", Feature: &X86.HasSSE41}, + {Name: "sse42", Feature: &X86.HasSSE42}, + {Name: "ssse3", Feature: &X86.HasSSSE3}, + + // These capabilities should always be enabled on amd64: + {Name: "sse2", Feature: &X86.HasSSE2, Required: runtime.GOARCH == "amd64"}, + } +} + +func archInit() { + Initialized = true maxID, _, _, _ := cpuid(0, 0) @@ -31,12 +80,15 @@ func init() { X86.HasOSXSAVE = isSet(27, ecx1) X86.HasRDRAND = isSet(30, ecx1) - osSupportsAVX := false + var osSupportsAVX, osSupportsAVX512 bool // For XGETBV, OSXSAVE bit is required and sufficient. if X86.HasOSXSAVE { eax, _ := xgetbv() // Check if XMM and YMM registers have OS support. osSupportsAVX = isSet(1, eax) && isSet(2, eax) + + // Check if OPMASK and ZMM registers have OS support. + osSupportsAVX512 = osSupportsAVX && isSet(5, eax) && isSet(6, eax) && isSet(7, eax) } X86.HasAVX = isSet(28, ecx1) && osSupportsAVX @@ -45,13 +97,38 @@ func init() { return } - _, ebx7, _, _ := cpuid(7, 0) + _, ebx7, ecx7, edx7 := cpuid(7, 0) X86.HasBMI1 = isSet(3, ebx7) X86.HasAVX2 = isSet(5, ebx7) && osSupportsAVX X86.HasBMI2 = isSet(8, ebx7) X86.HasERMS = isSet(9, ebx7) X86.HasRDSEED = isSet(18, ebx7) X86.HasADX = isSet(19, ebx7) + + X86.HasAVX512 = isSet(16, ebx7) && osSupportsAVX512 // Because avx-512 foundation is the core required extension + if X86.HasAVX512 { + X86.HasAVX512F = true + X86.HasAVX512CD = isSet(28, ebx7) + X86.HasAVX512ER = isSet(27, ebx7) + X86.HasAVX512PF = isSet(26, ebx7) + X86.HasAVX512VL = isSet(31, ebx7) + X86.HasAVX512BW = isSet(30, ebx7) + X86.HasAVX512DQ = isSet(17, ebx7) + X86.HasAVX512IFMA = isSet(21, ebx7) + X86.HasAVX512VBMI = isSet(1, ecx7) + X86.HasAVX5124VNNIW = isSet(2, edx7) + X86.HasAVX5124FMAPS = isSet(3, edx7) + X86.HasAVX512VPOPCNTDQ = isSet(14, ecx7) + X86.HasAVX512VPCLMULQDQ = isSet(10, ecx7) + X86.HasAVX512VNNI = isSet(11, ecx7) + X86.HasAVX512GFNI = isSet(8, ecx7) + X86.HasAVX512VAES = isSet(9, ecx7) + X86.HasAVX512VBMI2 = isSet(6, ecx7) + X86.HasAVX512BITALG = isSet(12, ecx7) + + eax71, _, _, _ := cpuid(7, 1) + X86.HasAVX512BF16 = isSet(5, eax71) + } } func isSet(bitpos uint, value uint32) bool { |