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authordependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>2019-11-20 09:18:44 +0000
committerValentin Rothberg <rothberg@redhat.com>2019-11-22 15:03:53 +0100
commit866391bb574f885549f5cf3cec965dc224cb84b3 (patch)
treebd681164ad8e570e8cdcfabf658f986ee436c3b5 /vendor/github.com/klauspost/cpuid/cpuid.go
parentc673ff8cb63c71a39e1a1d561373af42bfea7f24 (diff)
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build(deps): bump github.com/containers/storage from 1.13.5 to 1.14.0
Bumps [github.com/containers/storage](https://github.com/containers/storage) from 1.13.5 to 1.14.0. - [Release notes](https://github.com/containers/storage/releases) - [Changelog](https://github.com/containers/storage/blob/master/docs/containers-storage-changes.md) - [Commits](https://github.com/containers/storage/compare/v1.13.5...v1.14.0) Signed-off-by: dependabot-preview[bot] <support@dependabot.com> Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
Diffstat (limited to 'vendor/github.com/klauspost/cpuid/cpuid.go')
-rw-r--r--vendor/github.com/klauspost/cpuid/cpuid.go1049
1 files changed, 0 insertions, 1049 deletions
diff --git a/vendor/github.com/klauspost/cpuid/cpuid.go b/vendor/github.com/klauspost/cpuid/cpuid.go
deleted file mode 100644
index db9591321..000000000
--- a/vendor/github.com/klauspost/cpuid/cpuid.go
+++ /dev/null
@@ -1,1049 +0,0 @@
-// Copyright (c) 2015 Klaus Post, released under MIT License. See LICENSE file.
-
-// Package cpuid provides information about the CPU running the current program.
-//
-// CPU features are detected on startup, and kept for fast access through the life of the application.
-// Currently x86 / x64 (AMD64) is supported.
-//
-// You can access the CPU information by accessing the shared CPU variable of the cpuid library.
-//
-// Package home: https://github.com/klauspost/cpuid
-package cpuid
-
-import "strings"
-
-// Vendor is a representation of a CPU vendor.
-type Vendor int
-
-const (
- Other Vendor = iota
- Intel
- AMD
- VIA
- Transmeta
- NSC
- KVM // Kernel-based Virtual Machine
- MSVM // Microsoft Hyper-V or Windows Virtual PC
- VMware
- XenHVM
- Bhyve
- Hygon
-)
-
-const (
- CMOV = 1 << iota // i686 CMOV
- NX // NX (No-Execute) bit
- AMD3DNOW // AMD 3DNOW
- AMD3DNOWEXT // AMD 3DNowExt
- MMX // standard MMX
- MMXEXT // SSE integer functions or AMD MMX ext
- SSE // SSE functions
- SSE2 // P4 SSE functions
- SSE3 // Prescott SSE3 functions
- SSSE3 // Conroe SSSE3 functions
- SSE4 // Penryn SSE4.1 functions
- SSE4A // AMD Barcelona microarchitecture SSE4a instructions
- SSE42 // Nehalem SSE4.2 functions
- AVX // AVX functions
- AVX2 // AVX2 functions
- FMA3 // Intel FMA 3
- FMA4 // Bulldozer FMA4 functions
- XOP // Bulldozer XOP functions
- F16C // Half-precision floating-point conversion
- BMI1 // Bit Manipulation Instruction Set 1
- BMI2 // Bit Manipulation Instruction Set 2
- TBM // AMD Trailing Bit Manipulation
- LZCNT // LZCNT instruction
- POPCNT // POPCNT instruction
- AESNI // Advanced Encryption Standard New Instructions
- CLMUL // Carry-less Multiplication
- HTT // Hyperthreading (enabled)
- HLE // Hardware Lock Elision
- RTM // Restricted Transactional Memory
- RDRAND // RDRAND instruction is available
- RDSEED // RDSEED instruction is available
- ADX // Intel ADX (Multi-Precision Add-Carry Instruction Extensions)
- SHA // Intel SHA Extensions
- AVX512F // AVX-512 Foundation
- AVX512DQ // AVX-512 Doubleword and Quadword Instructions
- AVX512IFMA // AVX-512 Integer Fused Multiply-Add Instructions
- AVX512PF // AVX-512 Prefetch Instructions
- AVX512ER // AVX-512 Exponential and Reciprocal Instructions
- AVX512CD // AVX-512 Conflict Detection Instructions
- AVX512BW // AVX-512 Byte and Word Instructions
- AVX512VL // AVX-512 Vector Length Extensions
- AVX512VBMI // AVX-512 Vector Bit Manipulation Instructions
- MPX // Intel MPX (Memory Protection Extensions)
- ERMS // Enhanced REP MOVSB/STOSB
- RDTSCP // RDTSCP Instruction
- CX16 // CMPXCHG16B Instruction
- SGX // Software Guard Extensions
- IBPB // Indirect Branch Restricted Speculation (IBRS) and Indirect Branch Predictor Barrier (IBPB)
- STIBP // Single Thread Indirect Branch Predictors
-
- // Performance indicators
- SSE2SLOW // SSE2 is supported, but usually not faster
- SSE3SLOW // SSE3 is supported, but usually not faster
- ATOM // Atom processor, some SSSE3 instructions are slower
-)
-
-var flagNames = map[Flags]string{
- CMOV: "CMOV", // i686 CMOV
- NX: "NX", // NX (No-Execute) bit
- AMD3DNOW: "AMD3DNOW", // AMD 3DNOW
- AMD3DNOWEXT: "AMD3DNOWEXT", // AMD 3DNowExt
- MMX: "MMX", // Standard MMX
- MMXEXT: "MMXEXT", // SSE integer functions or AMD MMX ext
- SSE: "SSE", // SSE functions
- SSE2: "SSE2", // P4 SSE2 functions
- SSE3: "SSE3", // Prescott SSE3 functions
- SSSE3: "SSSE3", // Conroe SSSE3 functions
- SSE4: "SSE4.1", // Penryn SSE4.1 functions
- SSE4A: "SSE4A", // AMD Barcelona microarchitecture SSE4a instructions
- SSE42: "SSE4.2", // Nehalem SSE4.2 functions
- AVX: "AVX", // AVX functions
- AVX2: "AVX2", // AVX functions
- FMA3: "FMA3", // Intel FMA 3
- FMA4: "FMA4", // Bulldozer FMA4 functions
- XOP: "XOP", // Bulldozer XOP functions
- F16C: "F16C", // Half-precision floating-point conversion
- BMI1: "BMI1", // Bit Manipulation Instruction Set 1
- BMI2: "BMI2", // Bit Manipulation Instruction Set 2
- TBM: "TBM", // AMD Trailing Bit Manipulation
- LZCNT: "LZCNT", // LZCNT instruction
- POPCNT: "POPCNT", // POPCNT instruction
- AESNI: "AESNI", // Advanced Encryption Standard New Instructions
- CLMUL: "CLMUL", // Carry-less Multiplication
- HTT: "HTT", // Hyperthreading (enabled)
- HLE: "HLE", // Hardware Lock Elision
- RTM: "RTM", // Restricted Transactional Memory
- RDRAND: "RDRAND", // RDRAND instruction is available
- RDSEED: "RDSEED", // RDSEED instruction is available
- ADX: "ADX", // Intel ADX (Multi-Precision Add-Carry Instruction Extensions)
- SHA: "SHA", // Intel SHA Extensions
- AVX512F: "AVX512F", // AVX-512 Foundation
- AVX512DQ: "AVX512DQ", // AVX-512 Doubleword and Quadword Instructions
- AVX512IFMA: "AVX512IFMA", // AVX-512 Integer Fused Multiply-Add Instructions
- AVX512PF: "AVX512PF", // AVX-512 Prefetch Instructions
- AVX512ER: "AVX512ER", // AVX-512 Exponential and Reciprocal Instructions
- AVX512CD: "AVX512CD", // AVX-512 Conflict Detection Instructions
- AVX512BW: "AVX512BW", // AVX-512 Byte and Word Instructions
- AVX512VL: "AVX512VL", // AVX-512 Vector Length Extensions
- AVX512VBMI: "AVX512VBMI", // AVX-512 Vector Bit Manipulation Instructions
- MPX: "MPX", // Intel MPX (Memory Protection Extensions)
- ERMS: "ERMS", // Enhanced REP MOVSB/STOSB
- RDTSCP: "RDTSCP", // RDTSCP Instruction
- CX16: "CX16", // CMPXCHG16B Instruction
- SGX: "SGX", // Software Guard Extensions
- IBPB: "IBPB", // Indirect Branch Restricted Speculation and Indirect Branch Predictor Barrier
- STIBP: "STIBP", // Single Thread Indirect Branch Predictors
-
- // Performance indicators
- SSE2SLOW: "SSE2SLOW", // SSE2 supported, but usually not faster
- SSE3SLOW: "SSE3SLOW", // SSE3 supported, but usually not faster
- ATOM: "ATOM", // Atom processor, some SSSE3 instructions are slower
-
-}
-
-// CPUInfo contains information about the detected system CPU.
-type CPUInfo struct {
- BrandName string // Brand name reported by the CPU
- VendorID Vendor // Comparable CPU vendor ID
- Features Flags // Features of the CPU
- PhysicalCores int // Number of physical processor cores in your CPU. Will be 0 if undetectable.
- ThreadsPerCore int // Number of threads per physical core. Will be 1 if undetectable.
- LogicalCores int // Number of physical cores times threads that can run on each core through the use of hyperthreading. Will be 0 if undetectable.
- Family int // CPU family number
- Model int // CPU model number
- CacheLine int // Cache line size in bytes. Will be 0 if undetectable.
- Cache struct {
- L1I int // L1 Instruction Cache (per core or shared). Will be -1 if undetected
- L1D int // L1 Data Cache (per core or shared). Will be -1 if undetected
- L2 int // L2 Cache (per core or shared). Will be -1 if undetected
- L3 int // L3 Instruction Cache (per core or shared). Will be -1 if undetected
- }
- SGX SGXSupport
- maxFunc uint32
- maxExFunc uint32
-}
-
-var cpuid func(op uint32) (eax, ebx, ecx, edx uint32)
-var cpuidex func(op, op2 uint32) (eax, ebx, ecx, edx uint32)
-var xgetbv func(index uint32) (eax, edx uint32)
-var rdtscpAsm func() (eax, ebx, ecx, edx uint32)
-
-// CPU contains information about the CPU as detected on startup,
-// or when Detect last was called.
-//
-// Use this as the primary entry point to you data,
-// this way queries are
-var CPU CPUInfo
-
-func init() {
- initCPU()
- Detect()
-}
-
-// Detect will re-detect current CPU info.
-// This will replace the content of the exported CPU variable.
-//
-// Unless you expect the CPU to change while you are running your program
-// you should not need to call this function.
-// If you call this, you must ensure that no other goroutine is accessing the
-// exported CPU variable.
-func Detect() {
- CPU.maxFunc = maxFunctionID()
- CPU.maxExFunc = maxExtendedFunction()
- CPU.BrandName = brandName()
- CPU.CacheLine = cacheLine()
- CPU.Family, CPU.Model = familyModel()
- CPU.Features = support()
- CPU.SGX = hasSGX(CPU.Features&SGX != 0)
- CPU.ThreadsPerCore = threadsPerCore()
- CPU.LogicalCores = logicalCores()
- CPU.PhysicalCores = physicalCores()
- CPU.VendorID = vendorID()
- CPU.cacheSize()
-}
-
-// Generated here: http://play.golang.org/p/BxFH2Gdc0G
-
-// Cmov indicates support of CMOV instructions
-func (c CPUInfo) Cmov() bool {
- return c.Features&CMOV != 0
-}
-
-// Amd3dnow indicates support of AMD 3DNOW! instructions
-func (c CPUInfo) Amd3dnow() bool {
- return c.Features&AMD3DNOW != 0
-}
-
-// Amd3dnowExt indicates support of AMD 3DNOW! Extended instructions
-func (c CPUInfo) Amd3dnowExt() bool {
- return c.Features&AMD3DNOWEXT != 0
-}
-
-// MMX indicates support of MMX instructions
-func (c CPUInfo) MMX() bool {
- return c.Features&MMX != 0
-}
-
-// MMXExt indicates support of MMXEXT instructions
-// (SSE integer functions or AMD MMX ext)
-func (c CPUInfo) MMXExt() bool {
- return c.Features&MMXEXT != 0
-}
-
-// SSE indicates support of SSE instructions
-func (c CPUInfo) SSE() bool {
- return c.Features&SSE != 0
-}
-
-// SSE2 indicates support of SSE 2 instructions
-func (c CPUInfo) SSE2() bool {
- return c.Features&SSE2 != 0
-}
-
-// SSE3 indicates support of SSE 3 instructions
-func (c CPUInfo) SSE3() bool {
- return c.Features&SSE3 != 0
-}
-
-// SSSE3 indicates support of SSSE 3 instructions
-func (c CPUInfo) SSSE3() bool {
- return c.Features&SSSE3 != 0
-}
-
-// SSE4 indicates support of SSE 4 (also called SSE 4.1) instructions
-func (c CPUInfo) SSE4() bool {
- return c.Features&SSE4 != 0
-}
-
-// SSE42 indicates support of SSE4.2 instructions
-func (c CPUInfo) SSE42() bool {
- return c.Features&SSE42 != 0
-}
-
-// AVX indicates support of AVX instructions
-// and operating system support of AVX instructions
-func (c CPUInfo) AVX() bool {
- return c.Features&AVX != 0
-}
-
-// AVX2 indicates support of AVX2 instructions
-func (c CPUInfo) AVX2() bool {
- return c.Features&AVX2 != 0
-}
-
-// FMA3 indicates support of FMA3 instructions
-func (c CPUInfo) FMA3() bool {
- return c.Features&FMA3 != 0
-}
-
-// FMA4 indicates support of FMA4 instructions
-func (c CPUInfo) FMA4() bool {
- return c.Features&FMA4 != 0
-}
-
-// XOP indicates support of XOP instructions
-func (c CPUInfo) XOP() bool {
- return c.Features&XOP != 0
-}
-
-// F16C indicates support of F16C instructions
-func (c CPUInfo) F16C() bool {
- return c.Features&F16C != 0
-}
-
-// BMI1 indicates support of BMI1 instructions
-func (c CPUInfo) BMI1() bool {
- return c.Features&BMI1 != 0
-}
-
-// BMI2 indicates support of BMI2 instructions
-func (c CPUInfo) BMI2() bool {
- return c.Features&BMI2 != 0
-}
-
-// TBM indicates support of TBM instructions
-// (AMD Trailing Bit Manipulation)
-func (c CPUInfo) TBM() bool {
- return c.Features&TBM != 0
-}
-
-// Lzcnt indicates support of LZCNT instruction
-func (c CPUInfo) Lzcnt() bool {
- return c.Features&LZCNT != 0
-}
-
-// Popcnt indicates support of POPCNT instruction
-func (c CPUInfo) Popcnt() bool {
- return c.Features&POPCNT != 0
-}
-
-// HTT indicates the processor has Hyperthreading enabled
-func (c CPUInfo) HTT() bool {
- return c.Features&HTT != 0
-}
-
-// SSE2Slow indicates that SSE2 may be slow on this processor
-func (c CPUInfo) SSE2Slow() bool {
- return c.Features&SSE2SLOW != 0
-}
-
-// SSE3Slow indicates that SSE3 may be slow on this processor
-func (c CPUInfo) SSE3Slow() bool {
- return c.Features&SSE3SLOW != 0
-}
-
-// AesNi indicates support of AES-NI instructions
-// (Advanced Encryption Standard New Instructions)
-func (c CPUInfo) AesNi() bool {
- return c.Features&AESNI != 0
-}
-
-// Clmul indicates support of CLMUL instructions
-// (Carry-less Multiplication)
-func (c CPUInfo) Clmul() bool {
- return c.Features&CLMUL != 0
-}
-
-// NX indicates support of NX (No-Execute) bit
-func (c CPUInfo) NX() bool {
- return c.Features&NX != 0
-}
-
-// SSE4A indicates support of AMD Barcelona microarchitecture SSE4a instructions
-func (c CPUInfo) SSE4A() bool {
- return c.Features&SSE4A != 0
-}
-
-// HLE indicates support of Hardware Lock Elision
-func (c CPUInfo) HLE() bool {
- return c.Features&HLE != 0
-}
-
-// RTM indicates support of Restricted Transactional Memory
-func (c CPUInfo) RTM() bool {
- return c.Features&RTM != 0
-}
-
-// Rdrand indicates support of RDRAND instruction is available
-func (c CPUInfo) Rdrand() bool {
- return c.Features&RDRAND != 0
-}
-
-// Rdseed indicates support of RDSEED instruction is available
-func (c CPUInfo) Rdseed() bool {
- return c.Features&RDSEED != 0
-}
-
-// ADX indicates support of Intel ADX (Multi-Precision Add-Carry Instruction Extensions)
-func (c CPUInfo) ADX() bool {
- return c.Features&ADX != 0
-}
-
-// SHA indicates support of Intel SHA Extensions
-func (c CPUInfo) SHA() bool {
- return c.Features&SHA != 0
-}
-
-// AVX512F indicates support of AVX-512 Foundation
-func (c CPUInfo) AVX512F() bool {
- return c.Features&AVX512F != 0
-}
-
-// AVX512DQ indicates support of AVX-512 Doubleword and Quadword Instructions
-func (c CPUInfo) AVX512DQ() bool {
- return c.Features&AVX512DQ != 0
-}
-
-// AVX512IFMA indicates support of AVX-512 Integer Fused Multiply-Add Instructions
-func (c CPUInfo) AVX512IFMA() bool {
- return c.Features&AVX512IFMA != 0
-}
-
-// AVX512PF indicates support of AVX-512 Prefetch Instructions
-func (c CPUInfo) AVX512PF() bool {
- return c.Features&AVX512PF != 0
-}
-
-// AVX512ER indicates support of AVX-512 Exponential and Reciprocal Instructions
-func (c CPUInfo) AVX512ER() bool {
- return c.Features&AVX512ER != 0
-}
-
-// AVX512CD indicates support of AVX-512 Conflict Detection Instructions
-func (c CPUInfo) AVX512CD() bool {
- return c.Features&AVX512CD != 0
-}
-
-// AVX512BW indicates support of AVX-512 Byte and Word Instructions
-func (c CPUInfo) AVX512BW() bool {
- return c.Features&AVX512BW != 0
-}
-
-// AVX512VL indicates support of AVX-512 Vector Length Extensions
-func (c CPUInfo) AVX512VL() bool {
- return c.Features&AVX512VL != 0
-}
-
-// AVX512VBMI indicates support of AVX-512 Vector Bit Manipulation Instructions
-func (c CPUInfo) AVX512VBMI() bool {
- return c.Features&AVX512VBMI != 0
-}
-
-// MPX indicates support of Intel MPX (Memory Protection Extensions)
-func (c CPUInfo) MPX() bool {
- return c.Features&MPX != 0
-}
-
-// ERMS indicates support of Enhanced REP MOVSB/STOSB
-func (c CPUInfo) ERMS() bool {
- return c.Features&ERMS != 0
-}
-
-// RDTSCP Instruction is available.
-func (c CPUInfo) RDTSCP() bool {
- return c.Features&RDTSCP != 0
-}
-
-// CX16 indicates if CMPXCHG16B instruction is available.
-func (c CPUInfo) CX16() bool {
- return c.Features&CX16 != 0
-}
-
-// TSX is split into HLE (Hardware Lock Elision) and RTM (Restricted Transactional Memory) detection.
-// So TSX simply checks that.
-func (c CPUInfo) TSX() bool {
- return c.Features&(HLE|RTM) == HLE|RTM
-}
-
-// Atom indicates an Atom processor
-func (c CPUInfo) Atom() bool {
- return c.Features&ATOM != 0
-}
-
-// Intel returns true if vendor is recognized as Intel
-func (c CPUInfo) Intel() bool {
- return c.VendorID == Intel
-}
-
-// AMD returns true if vendor is recognized as AMD
-func (c CPUInfo) AMD() bool {
- return c.VendorID == AMD
-}
-
-// Hygon returns true if vendor is recognized as Hygon
-func (c CPUInfo) Hygon() bool {
- return c.VendorID == Hygon
-}
-
-// Transmeta returns true if vendor is recognized as Transmeta
-func (c CPUInfo) Transmeta() bool {
- return c.VendorID == Transmeta
-}
-
-// NSC returns true if vendor is recognized as National Semiconductor
-func (c CPUInfo) NSC() bool {
- return c.VendorID == NSC
-}
-
-// VIA returns true if vendor is recognized as VIA
-func (c CPUInfo) VIA() bool {
- return c.VendorID == VIA
-}
-
-// RTCounter returns the 64-bit time-stamp counter
-// Uses the RDTSCP instruction. The value 0 is returned
-// if the CPU does not support the instruction.
-func (c CPUInfo) RTCounter() uint64 {
- if !c.RDTSCP() {
- return 0
- }
- a, _, _, d := rdtscpAsm()
- return uint64(a) | (uint64(d) << 32)
-}
-
-// Ia32TscAux returns the IA32_TSC_AUX part of the RDTSCP.
-// This variable is OS dependent, but on Linux contains information
-// about the current cpu/core the code is running on.
-// If the RDTSCP instruction isn't supported on the CPU, the value 0 is returned.
-func (c CPUInfo) Ia32TscAux() uint32 {
- if !c.RDTSCP() {
- return 0
- }
- _, _, ecx, _ := rdtscpAsm()
- return ecx
-}
-
-// LogicalCPU will return the Logical CPU the code is currently executing on.
-// This is likely to change when the OS re-schedules the running thread
-// to another CPU.
-// If the current core cannot be detected, -1 will be returned.
-func (c CPUInfo) LogicalCPU() int {
- if c.maxFunc < 1 {
- return -1
- }
- _, ebx, _, _ := cpuid(1)
- return int(ebx >> 24)
-}
-
-// VM Will return true if the cpu id indicates we are in
-// a virtual machine. This is only a hint, and will very likely
-// have many false negatives.
-func (c CPUInfo) VM() bool {
- switch c.VendorID {
- case MSVM, KVM, VMware, XenHVM, Bhyve:
- return true
- }
- return false
-}
-
-// Flags contains detected cpu features and caracteristics
-type Flags uint64
-
-// String returns a string representation of the detected
-// CPU features.
-func (f Flags) String() string {
- return strings.Join(f.Strings(), ",")
-}
-
-// Strings returns and array of the detected features.
-func (f Flags) Strings() []string {
- s := support()
- r := make([]string, 0, 20)
- for i := uint(0); i < 64; i++ {
- key := Flags(1 << i)
- val := flagNames[key]
- if s&key != 0 {
- r = append(r, val)
- }
- }
- return r
-}
-
-func maxExtendedFunction() uint32 {
- eax, _, _, _ := cpuid(0x80000000)
- return eax
-}
-
-func maxFunctionID() uint32 {
- a, _, _, _ := cpuid(0)
- return a
-}
-
-func brandName() string {
- if maxExtendedFunction() >= 0x80000004 {
- v := make([]uint32, 0, 48)
- for i := uint32(0); i < 3; i++ {
- a, b, c, d := cpuid(0x80000002 + i)
- v = append(v, a, b, c, d)
- }
- return strings.Trim(string(valAsString(v...)), " ")
- }
- return "unknown"
-}
-
-func threadsPerCore() int {
- mfi := maxFunctionID()
- if mfi < 0x4 || vendorID() != Intel {
- return 1
- }
-
- if mfi < 0xb {
- _, b, _, d := cpuid(1)
- if (d & (1 << 28)) != 0 {
- // v will contain logical core count
- v := (b >> 16) & 255
- if v > 1 {
- a4, _, _, _ := cpuid(4)
- // physical cores
- v2 := (a4 >> 26) + 1
- if v2 > 0 {
- return int(v) / int(v2)
- }
- }
- }
- return 1
- }
- _, b, _, _ := cpuidex(0xb, 0)
- if b&0xffff == 0 {
- return 1
- }
- return int(b & 0xffff)
-}
-
-func logicalCores() int {
- mfi := maxFunctionID()
- switch vendorID() {
- case Intel:
- // Use this on old Intel processors
- if mfi < 0xb {
- if mfi < 1 {
- return 0
- }
- // CPUID.1:EBX[23:16] represents the maximum number of addressable IDs (initial APIC ID)
- // that can be assigned to logical processors in a physical package.
- // The value may not be the same as the number of logical processors that are present in the hardware of a physical package.
- _, ebx, _, _ := cpuid(1)
- logical := (ebx >> 16) & 0xff
- return int(logical)
- }
- _, b, _, _ := cpuidex(0xb, 1)
- return int(b & 0xffff)
- case AMD, Hygon:
- _, b, _, _ := cpuid(1)
- return int((b >> 16) & 0xff)
- default:
- return 0
- }
-}
-
-func familyModel() (int, int) {
- if maxFunctionID() < 0x1 {
- return 0, 0
- }
- eax, _, _, _ := cpuid(1)
- family := ((eax >> 8) & 0xf) + ((eax >> 20) & 0xff)
- model := ((eax >> 4) & 0xf) + ((eax >> 12) & 0xf0)
- return int(family), int(model)
-}
-
-func physicalCores() int {
- switch vendorID() {
- case Intel:
- return logicalCores() / threadsPerCore()
- case AMD, Hygon:
- if maxExtendedFunction() >= 0x80000008 {
- _, _, c, _ := cpuid(0x80000008)
- return int(c&0xff) + 1
- }
- }
- return 0
-}
-
-// Except from http://en.wikipedia.org/wiki/CPUID#EAX.3D0:_Get_vendor_ID
-var vendorMapping = map[string]Vendor{
- "AMDisbetter!": AMD,
- "AuthenticAMD": AMD,
- "CentaurHauls": VIA,
- "GenuineIntel": Intel,
- "TransmetaCPU": Transmeta,
- "GenuineTMx86": Transmeta,
- "Geode by NSC": NSC,
- "VIA VIA VIA ": VIA,
- "KVMKVMKVMKVM": KVM,
- "Microsoft Hv": MSVM,
- "VMwareVMware": VMware,
- "XenVMMXenVMM": XenHVM,
- "bhyve bhyve ": Bhyve,
- "HygonGenuine": Hygon,
-}
-
-func vendorID() Vendor {
- _, b, c, d := cpuid(0)
- v := valAsString(b, d, c)
- vend, ok := vendorMapping[string(v)]
- if !ok {
- return Other
- }
- return vend
-}
-
-func cacheLine() int {
- if maxFunctionID() < 0x1 {
- return 0
- }
-
- _, ebx, _, _ := cpuid(1)
- cache := (ebx & 0xff00) >> 5 // cflush size
- if cache == 0 && maxExtendedFunction() >= 0x80000006 {
- _, _, ecx, _ := cpuid(0x80000006)
- cache = ecx & 0xff // cacheline size
- }
- // TODO: Read from Cache and TLB Information
- return int(cache)
-}
-
-func (c *CPUInfo) cacheSize() {
- c.Cache.L1D = -1
- c.Cache.L1I = -1
- c.Cache.L2 = -1
- c.Cache.L3 = -1
- vendor := vendorID()
- switch vendor {
- case Intel:
- if maxFunctionID() < 4 {
- return
- }
- for i := uint32(0); ; i++ {
- eax, ebx, ecx, _ := cpuidex(4, i)
- cacheType := eax & 15
- if cacheType == 0 {
- break
- }
- cacheLevel := (eax >> 5) & 7
- coherency := int(ebx&0xfff) + 1
- partitions := int((ebx>>12)&0x3ff) + 1
- associativity := int((ebx>>22)&0x3ff) + 1
- sets := int(ecx) + 1
- size := associativity * partitions * coherency * sets
- switch cacheLevel {
- case 1:
- if cacheType == 1 {
- // 1 = Data Cache
- c.Cache.L1D = size
- } else if cacheType == 2 {
- // 2 = Instruction Cache
- c.Cache.L1I = size
- } else {
- if c.Cache.L1D < 0 {
- c.Cache.L1I = size
- }
- if c.Cache.L1I < 0 {
- c.Cache.L1I = size
- }
- }
- case 2:
- c.Cache.L2 = size
- case 3:
- c.Cache.L3 = size
- }
- }
- case AMD, Hygon:
- // Untested.
- if maxExtendedFunction() < 0x80000005 {
- return
- }
- _, _, ecx, edx := cpuid(0x80000005)
- c.Cache.L1D = int(((ecx >> 24) & 0xFF) * 1024)
- c.Cache.L1I = int(((edx >> 24) & 0xFF) * 1024)
-
- if maxExtendedFunction() < 0x80000006 {
- return
- }
- _, _, ecx, _ = cpuid(0x80000006)
- c.Cache.L2 = int(((ecx >> 16) & 0xFFFF) * 1024)
- }
-
- return
-}
-
-type SGXSupport struct {
- Available bool
- SGX1Supported bool
- SGX2Supported bool
- MaxEnclaveSizeNot64 int64
- MaxEnclaveSize64 int64
-}
-
-func hasSGX(available bool) (rval SGXSupport) {
- rval.Available = available
-
- if !available {
- return
- }
-
- a, _, _, d := cpuidex(0x12, 0)
- rval.SGX1Supported = a&0x01 != 0
- rval.SGX2Supported = a&0x02 != 0
- rval.MaxEnclaveSizeNot64 = 1 << (d & 0xFF) // pow 2
- rval.MaxEnclaveSize64 = 1 << ((d >> 8) & 0xFF) // pow 2
-
- return
-}
-
-func support() Flags {
- mfi := maxFunctionID()
- vend := vendorID()
- if mfi < 0x1 {
- return 0
- }
- rval := uint64(0)
- _, _, c, d := cpuid(1)
- if (d & (1 << 15)) != 0 {
- rval |= CMOV
- }
- if (d & (1 << 23)) != 0 {
- rval |= MMX
- }
- if (d & (1 << 25)) != 0 {
- rval |= MMXEXT
- }
- if (d & (1 << 25)) != 0 {
- rval |= SSE
- }
- if (d & (1 << 26)) != 0 {
- rval |= SSE2
- }
- if (c & 1) != 0 {
- rval |= SSE3
- }
- if (c & 0x00000200) != 0 {
- rval |= SSSE3
- }
- if (c & 0x00080000) != 0 {
- rval |= SSE4
- }
- if (c & 0x00100000) != 0 {
- rval |= SSE42
- }
- if (c & (1 << 25)) != 0 {
- rval |= AESNI
- }
- if (c & (1 << 1)) != 0 {
- rval |= CLMUL
- }
- if c&(1<<23) != 0 {
- rval |= POPCNT
- }
- if c&(1<<30) != 0 {
- rval |= RDRAND
- }
- if c&(1<<29) != 0 {
- rval |= F16C
- }
- if c&(1<<13) != 0 {
- rval |= CX16
- }
- if vend == Intel && (d&(1<<28)) != 0 && mfi >= 4 {
- if threadsPerCore() > 1 {
- rval |= HTT
- }
- }
-
- // Check XGETBV, OXSAVE and AVX bits
- if c&(1<<26) != 0 && c&(1<<27) != 0 && c&(1<<28) != 0 {
- // Check for OS support
- eax, _ := xgetbv(0)
- if (eax & 0x6) == 0x6 {
- rval |= AVX
- if (c & 0x00001000) != 0 {
- rval |= FMA3
- }
- }
- }
-
- // Check AVX2, AVX2 requires OS support, but BMI1/2 don't.
- if mfi >= 7 {
- _, ebx, ecx, edx := cpuidex(7, 0)
- if (rval&AVX) != 0 && (ebx&0x00000020) != 0 {
- rval |= AVX2
- }
- if (ebx & 0x00000008) != 0 {
- rval |= BMI1
- if (ebx & 0x00000100) != 0 {
- rval |= BMI2
- }
- }
- if ebx&(1<<2) != 0 {
- rval |= SGX
- }
- if ebx&(1<<4) != 0 {
- rval |= HLE
- }
- if ebx&(1<<9) != 0 {
- rval |= ERMS
- }
- if ebx&(1<<11) != 0 {
- rval |= RTM
- }
- if ebx&(1<<14) != 0 {
- rval |= MPX
- }
- if ebx&(1<<18) != 0 {
- rval |= RDSEED
- }
- if ebx&(1<<19) != 0 {
- rval |= ADX
- }
- if ebx&(1<<29) != 0 {
- rval |= SHA
- }
- if edx&(1<<26) != 0 {
- rval |= IBPB
- }
- if edx&(1<<27) != 0 {
- rval |= STIBP
- }
-
- // Only detect AVX-512 features if XGETBV is supported
- if c&((1<<26)|(1<<27)) == (1<<26)|(1<<27) {
- // Check for OS support
- eax, _ := xgetbv(0)
-
- // Verify that XCR0[7:5] = ‘111b’ (OPMASK state, upper 256-bit of ZMM0-ZMM15 and
- // ZMM16-ZMM31 state are enabled by OS)
- /// and that XCR0[2:1] = ‘11b’ (XMM state and YMM state are enabled by OS).
- if (eax>>5)&7 == 7 && (eax>>1)&3 == 3 {
- if ebx&(1<<16) != 0 {
- rval |= AVX512F
- }
- if ebx&(1<<17) != 0 {
- rval |= AVX512DQ
- }
- if ebx&(1<<21) != 0 {
- rval |= AVX512IFMA
- }
- if ebx&(1<<26) != 0 {
- rval |= AVX512PF
- }
- if ebx&(1<<27) != 0 {
- rval |= AVX512ER
- }
- if ebx&(1<<28) != 0 {
- rval |= AVX512CD
- }
- if ebx&(1<<30) != 0 {
- rval |= AVX512BW
- }
- if ebx&(1<<31) != 0 {
- rval |= AVX512VL
- }
- // ecx
- if ecx&(1<<1) != 0 {
- rval |= AVX512VBMI
- }
- }
- }
- }
-
- if maxExtendedFunction() >= 0x80000001 {
- _, _, c, d := cpuid(0x80000001)
- if (c & (1 << 5)) != 0 {
- rval |= LZCNT
- rval |= POPCNT
- }
- if (d & (1 << 31)) != 0 {
- rval |= AMD3DNOW
- }
- if (d & (1 << 30)) != 0 {
- rval |= AMD3DNOWEXT
- }
- if (d & (1 << 23)) != 0 {
- rval |= MMX
- }
- if (d & (1 << 22)) != 0 {
- rval |= MMXEXT
- }
- if (c & (1 << 6)) != 0 {
- rval |= SSE4A
- }
- if d&(1<<20) != 0 {
- rval |= NX
- }
- if d&(1<<27) != 0 {
- rval |= RDTSCP
- }
-
- /* Allow for selectively disabling SSE2 functions on AMD processors
- with SSE2 support but not SSE4a. This includes Athlon64, some
- Opteron, and some Sempron processors. MMX, SSE, or 3DNow! are faster
- than SSE2 often enough to utilize this special-case flag.
- AV_CPU_FLAG_SSE2 and AV_CPU_FLAG_SSE2SLOW are both set in this case
- so that SSE2 is used unless explicitly disabled by checking
- AV_CPU_FLAG_SSE2SLOW. */
- if vendorID() != Intel &&
- rval&SSE2 != 0 && (c&0x00000040) == 0 {
- rval |= SSE2SLOW
- }
-
- /* XOP and FMA4 use the AVX instruction coding scheme, so they can't be
- * used unless the OS has AVX support. */
- if (rval & AVX) != 0 {
- if (c & 0x00000800) != 0 {
- rval |= XOP
- }
- if (c & 0x00010000) != 0 {
- rval |= FMA4
- }
- }
-
- if vendorID() == Intel {
- family, model := familyModel()
- if family == 6 && (model == 9 || model == 13 || model == 14) {
- /* 6/9 (pentium-m "banias"), 6/13 (pentium-m "dothan"), and
- * 6/14 (core1 "yonah") theoretically support sse2, but it's
- * usually slower than mmx. */
- if (rval & SSE2) != 0 {
- rval |= SSE2SLOW
- }
- if (rval & SSE3) != 0 {
- rval |= SSE3SLOW
- }
- }
- /* The Atom processor has SSSE3 support, which is useful in many cases,
- * but sometimes the SSSE3 version is slower than the SSE2 equivalent
- * on the Atom, but is generally faster on other processors supporting
- * SSSE3. This flag allows for selectively disabling certain SSSE3
- * functions on the Atom. */
- if family == 6 && model == 28 {
- rval |= ATOM
- }
- }
- }
- return Flags(rval)
-}
-
-func valAsString(values ...uint32) []byte {
- r := make([]byte, 4*len(values))
- for i, v := range values {
- dst := r[i*4:]
- dst[0] = byte(v & 0xff)
- dst[1] = byte((v >> 8) & 0xff)
- dst[2] = byte((v >> 16) & 0xff)
- dst[3] = byte((v >> 24) & 0xff)
- switch {
- case dst[0] == 0:
- return r[:i*4]
- case dst[1] == 0:
- return r[:i*4+1]
- case dst[2] == 0:
- return r[:i*4+2]
- case dst[3] == 0:
- return r[:i*4+3]
- }
- }
- return r
-}