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vendor/github.com/klauspost/cpuid/.gitignore generated vendored Normal file
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# Compiled Object files, Static and Dynamic libs (Shared Objects)
*.o
*.a
*.so
# Folders
_obj
_test
# Architecture specific extensions/prefixes
*.[568vq]
[568vq].out
*.cgo1.go
*.cgo2.c
_cgo_defun.c
_cgo_gotypes.go
_cgo_export.*
_testmain.go
*.exe
*.test
*.prof

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language: go
sudo: false
os:
- linux
- osx
go:
- 1.5.x
- 1.6.x
- 1.7.x
- 1.8.x
- master
script:
- go vet ./...
- go test -v ./...
- go test -race ./...
- diff <(gofmt -d .) <("")
matrix:
allow_failures:
- go: 'master'
fast_finish: true

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The MIT License (MIT)
Copyright (c) 2015 Klaus Post
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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# cpuid
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, and no external C (cgo) code is used, which should make the library very easy to use.
You can access the CPU information by accessing the shared CPU variable of the cpuid library.
Package home: https://github.com/klauspost/cpuid
[![GoDoc][1]][2] [![Build Status][3]][4]
[1]: https://godoc.org/github.com/klauspost/cpuid?status.svg
[2]: https://godoc.org/github.com/klauspost/cpuid
[3]: https://travis-ci.org/klauspost/cpuid.svg
[4]: https://travis-ci.org/klauspost/cpuid
# features
## CPU Instructions
* **CMOV** (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, with activation details)
## Performance
* **RDTSCP()** Returns current cycle count. Can be used for benchmarking.
* **SSE2SLOW** (SSE2 is supported, but usually not faster)
* **SSE3SLOW** (SSE3 is supported, but usually not faster)
* **ATOM** (Atom processor, some SSSE3 instructions are slower)
* **Cache line** (Probable size of a cache line).
* **L1, L2, L3 Cache size** on newer Intel/AMD CPUs.
## Cpu Vendor/VM
* **Intel**
* **AMD**
* **VIA**
* **Transmeta**
* **NSC**
* **KVM** (Kernel-based Virtual Machine)
* **MSVM** (Microsoft Hyper-V or Windows Virtual PC)
* **VMware**
* **XenHVM**
# installing
```go get github.com/klauspost/cpuid```
# example
```Go
package main
import (
"fmt"
"github.com/klauspost/cpuid"
)
func main() {
// Print basic CPU information:
fmt.Println("Name:", cpuid.CPU.BrandName)
fmt.Println("PhysicalCores:", cpuid.CPU.PhysicalCores)
fmt.Println("ThreadsPerCore:", cpuid.CPU.ThreadsPerCore)
fmt.Println("LogicalCores:", cpuid.CPU.LogicalCores)
fmt.Println("Family", cpuid.CPU.Family, "Model:", cpuid.CPU.Model)
fmt.Println("Features:", cpuid.CPU.Features)
fmt.Println("Cacheline bytes:", cpuid.CPU.CacheLine)
fmt.Println("L1 Data Cache:", cpuid.CPU.Cache.L1D, "bytes")
fmt.Println("L1 Instruction Cache:", cpuid.CPU.Cache.L1D, "bytes")
fmt.Println("L2 Cache:", cpuid.CPU.Cache.L2, "bytes")
fmt.Println("L3 Cache:", cpuid.CPU.Cache.L3, "bytes")
// Test if we have a specific feature:
if cpuid.CPU.SSE() {
fmt.Println("We have Streaming SIMD Extensions")
}
}
```
Sample output:
```
>go run main.go
Name: Intel(R) Core(TM) i5-2540M CPU @ 2.60GHz
PhysicalCores: 2
ThreadsPerCore: 2
LogicalCores: 4
Family 6 Model: 42
Features: CMOV,MMX,MMXEXT,SSE,SSE2,SSE3,SSSE3,SSE4.1,SSE4.2,AVX,AESNI,CLMUL
Cacheline bytes: 64
We have Streaming SIMD Extensions
```
# private package
In the "private" folder you can find an autogenerated version of the library you can include in your own packages.
For this purpose all exports are removed, and functions and constants are lowercased.
This is not a recommended way of using the library, but provided for convenience, if it is difficult for you to use external packages.
# license
This code is published under an MIT license. See LICENSE file for more information.

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// Copyright (c) 2015 Klaus Post, released under MIT License. See LICENSE file.
// +build 386,!gccgo
// func asmCpuid(op uint32) (eax, ebx, ecx, edx uint32)
TEXT ·asmCpuid(SB), 7, $0
XORL CX, CX
MOVL op+0(FP), AX
CPUID
MOVL AX, eax+4(FP)
MOVL BX, ebx+8(FP)
MOVL CX, ecx+12(FP)
MOVL DX, edx+16(FP)
RET
// func asmCpuidex(op, op2 uint32) (eax, ebx, ecx, edx uint32)
TEXT ·asmCpuidex(SB), 7, $0
MOVL op+0(FP), AX
MOVL op2+4(FP), CX
CPUID
MOVL AX, eax+8(FP)
MOVL BX, ebx+12(FP)
MOVL CX, ecx+16(FP)
MOVL DX, edx+20(FP)
RET
// func xgetbv(index uint32) (eax, edx uint32)
TEXT ·asmXgetbv(SB), 7, $0
MOVL index+0(FP), CX
BYTE $0x0f; BYTE $0x01; BYTE $0xd0 // XGETBV
MOVL AX, eax+4(FP)
MOVL DX, edx+8(FP)
RET
// func asmRdtscpAsm() (eax, ebx, ecx, edx uint32)
TEXT ·asmRdtscpAsm(SB), 7, $0
BYTE $0x0F; BYTE $0x01; BYTE $0xF9 // RDTSCP
MOVL AX, eax+0(FP)
MOVL BX, ebx+4(FP)
MOVL CX, ecx+8(FP)
MOVL DX, edx+12(FP)
RET

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// Copyright (c) 2015 Klaus Post, released under MIT License. See LICENSE file.
//+build amd64,!gccgo
// func asmCpuid(op uint32) (eax, ebx, ecx, edx uint32)
TEXT ·asmCpuid(SB), 7, $0
XORQ CX, CX
MOVL op+0(FP), AX
CPUID
MOVL AX, eax+8(FP)
MOVL BX, ebx+12(FP)
MOVL CX, ecx+16(FP)
MOVL DX, edx+20(FP)
RET
// func asmCpuidex(op, op2 uint32) (eax, ebx, ecx, edx uint32)
TEXT ·asmCpuidex(SB), 7, $0
MOVL op+0(FP), AX
MOVL op2+4(FP), CX
CPUID
MOVL AX, eax+8(FP)
MOVL BX, ebx+12(FP)
MOVL CX, ecx+16(FP)
MOVL DX, edx+20(FP)
RET
// func asmXgetbv(index uint32) (eax, edx uint32)
TEXT ·asmXgetbv(SB), 7, $0
MOVL index+0(FP), CX
BYTE $0x0f; BYTE $0x01; BYTE $0xd0 // XGETBV
MOVL AX, eax+8(FP)
MOVL DX, edx+12(FP)
RET
// func asmRdtscpAsm() (eax, ebx, ecx, edx uint32)
TEXT ·asmRdtscpAsm(SB), 7, $0
BYTE $0x0F; BYTE $0x01; BYTE $0xF9 // RDTSCP
MOVL AX, eax+0(FP)
MOVL BX, ebx+4(FP)
MOVL CX, ecx+8(FP)
MOVL DX, edx+12(FP)
RET

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// Copyright (c) 2015 Klaus Post, released under MIT License. See LICENSE file.
package cpuid
import (
"fmt"
"testing"
)
// There is no real way to test a CPU identifier, since results will
// obviously differ on each machine.
func TestCPUID(t *testing.T) {
n := maxFunctionID()
t.Logf("Max Function:0x%x\n", n)
n = maxExtendedFunction()
t.Logf("Max Extended Function:0x%x\n", n)
t.Log("Name:", CPU.BrandName)
t.Log("PhysicalCores:", CPU.PhysicalCores)
t.Log("ThreadsPerCore:", CPU.ThreadsPerCore)
t.Log("LogicalCores:", CPU.LogicalCores)
t.Log("Family", CPU.Family, "Model:", CPU.Model)
t.Log("Features:", CPU.Features)
t.Log("Cacheline bytes:", CPU.CacheLine)
t.Log("L1 Instruction Cache:", CPU.Cache.L1I, "bytes")
t.Log("L1 Data Cache:", CPU.Cache.L1D, "bytes")
t.Log("L2 Cache:", CPU.Cache.L2, "bytes")
t.Log("L3 Cache:", CPU.Cache.L3, "bytes")
if CPU.SSE2() {
t.Log("We have SSE2")
}
}
func TestDumpCPUID(t *testing.T) {
n := int(maxFunctionID())
for i := 0; i <= n; i++ {
a, b, c, d := cpuidex(uint32(i), 0)
t.Logf("CPUID %08x: %08x-%08x-%08x-%08x", i, a, b, c, d)
ex := uint32(1)
for {
a2, b2, c2, d2 := cpuidex(uint32(i), ex)
if a2 == a && b2 == b && d2 == d || ex > 50 || a2 == 0 {
break
}
t.Logf("CPUID %08x: %08x-%08x-%08x-%08x", i, a2, b2, c2, d2)
a, b, c, d = a2, b2, c2, d2
ex++
}
}
n2 := maxExtendedFunction()
for i := uint32(0x80000000); i <= n2; i++ {
a, b, c, d := cpuid(i)
t.Logf("CPUID %08x: %08x-%08x-%08x-%08x", i, a, b, c, d)
}
}
func Example() {
// Print basic CPU information:
fmt.Println("Name:", CPU.BrandName)
fmt.Println("PhysicalCores:", CPU.PhysicalCores)
fmt.Println("ThreadsPerCore:", CPU.ThreadsPerCore)
fmt.Println("LogicalCores:", CPU.LogicalCores)
fmt.Println("Family", CPU.Family, "Model:", CPU.Model)
fmt.Println("Features:", CPU.Features)
fmt.Println("Cacheline bytes:", CPU.CacheLine)
// Test if we have a specific feature:
if CPU.SSE() {
fmt.Println("We have Streaming SIMD Extensions")
}
}
func TestBrandNameZero(t *testing.T) {
if len(CPU.BrandName) > 0 {
// Cut out last byte
last := []byte(CPU.BrandName[len(CPU.BrandName)-1:])
if last[0] == 0 {
t.Fatal("last byte was zero")
} else if last[0] == 32 {
t.Fatal("whitespace wasn't trimmed")
}
}
}
// Generated here: http://play.golang.org/p/mko-0tFt0Q
// TestCmov tests Cmov() function
func TestCmov(t *testing.T) {
got := CPU.Cmov()
expected := CPU.Features&CMOV == CMOV
if got != expected {
t.Fatalf("Cmov: expected %v, got %v", expected, got)
}
t.Log("CMOV Support:", got)
}
// TestAmd3dnow tests Amd3dnow() function
func TestAmd3dnow(t *testing.T) {
got := CPU.Amd3dnow()
expected := CPU.Features&AMD3DNOW == AMD3DNOW
if got != expected {
t.Fatalf("Amd3dnow: expected %v, got %v", expected, got)
}
t.Log("AMD3DNOW Support:", got)
}
// TestAmd3dnowExt tests Amd3dnowExt() function
func TestAmd3dnowExt(t *testing.T) {
got := CPU.Amd3dnowExt()
expected := CPU.Features&AMD3DNOWEXT == AMD3DNOWEXT
if got != expected {
t.Fatalf("Amd3dnowExt: expected %v, got %v", expected, got)
}
t.Log("AMD3DNOWEXT Support:", got)
}
// TestMMX tests MMX() function
func TestMMX(t *testing.T) {
got := CPU.MMX()
expected := CPU.Features&MMX == MMX
if got != expected {
t.Fatalf("MMX: expected %v, got %v", expected, got)
}
t.Log("MMX Support:", got)
}
// TestMMXext tests MMXext() function
func TestMMXext(t *testing.T) {
got := CPU.MMXExt()
expected := CPU.Features&MMXEXT == MMXEXT
if got != expected {
t.Fatalf("MMXExt: expected %v, got %v", expected, got)
}
t.Log("MMXEXT Support:", got)
}
// TestSSE tests SSE() function
func TestSSE(t *testing.T) {
got := CPU.SSE()
expected := CPU.Features&SSE == SSE
if got != expected {
t.Fatalf("SSE: expected %v, got %v", expected, got)
}
t.Log("SSE Support:", got)
}
// TestSSE2 tests SSE2() function
func TestSSE2(t *testing.T) {
got := CPU.SSE2()
expected := CPU.Features&SSE2 == SSE2
if got != expected {
t.Fatalf("SSE2: expected %v, got %v", expected, got)
}
t.Log("SSE2 Support:", got)
}
// TestSSE3 tests SSE3() function
func TestSSE3(t *testing.T) {
got := CPU.SSE3()
expected := CPU.Features&SSE3 == SSE3
if got != expected {
t.Fatalf("SSE3: expected %v, got %v", expected, got)
}
t.Log("SSE3 Support:", got)
}
// TestSSSE3 tests SSSE3() function
func TestSSSE3(t *testing.T) {
got := CPU.SSSE3()
expected := CPU.Features&SSSE3 == SSSE3
if got != expected {
t.Fatalf("SSSE3: expected %v, got %v", expected, got)
}
t.Log("SSSE3 Support:", got)
}
// TestSSE4 tests SSE4() function
func TestSSE4(t *testing.T) {
got := CPU.SSE4()
expected := CPU.Features&SSE4 == SSE4
if got != expected {
t.Fatalf("SSE4: expected %v, got %v", expected, got)
}
t.Log("SSE4 Support:", got)
}
// TestSSE42 tests SSE42() function
func TestSSE42(t *testing.T) {
got := CPU.SSE42()
expected := CPU.Features&SSE42 == SSE42
if got != expected {
t.Fatalf("SSE42: expected %v, got %v", expected, got)
}
t.Log("SSE42 Support:", got)
}
// TestAVX tests AVX() function
func TestAVX(t *testing.T) {
got := CPU.AVX()
expected := CPU.Features&AVX == AVX
if got != expected {
t.Fatalf("AVX: expected %v, got %v", expected, got)
}
t.Log("AVX Support:", got)
}
// TestAVX2 tests AVX2() function
func TestAVX2(t *testing.T) {
got := CPU.AVX2()
expected := CPU.Features&AVX2 == AVX2
if got != expected {
t.Fatalf("AVX2: expected %v, got %v", expected, got)
}
t.Log("AVX2 Support:", got)
}
// TestFMA3 tests FMA3() function
func TestFMA3(t *testing.T) {
got := CPU.FMA3()
expected := CPU.Features&FMA3 == FMA3
if got != expected {
t.Fatalf("FMA3: expected %v, got %v", expected, got)
}
t.Log("FMA3 Support:", got)
}
// TestFMA4 tests FMA4() function
func TestFMA4(t *testing.T) {
got := CPU.FMA4()
expected := CPU.Features&FMA4 == FMA4
if got != expected {
t.Fatalf("FMA4: expected %v, got %v", expected, got)
}
t.Log("FMA4 Support:", got)
}
// TestXOP tests XOP() function
func TestXOP(t *testing.T) {
got := CPU.XOP()
expected := CPU.Features&XOP == XOP
if got != expected {
t.Fatalf("XOP: expected %v, got %v", expected, got)
}
t.Log("XOP Support:", got)
}
// TestF16C tests F16C() function
func TestF16C(t *testing.T) {
got := CPU.F16C()
expected := CPU.Features&F16C == F16C
if got != expected {
t.Fatalf("F16C: expected %v, got %v", expected, got)
}
t.Log("F16C Support:", got)
}
// TestCX16 tests CX16() function
func TestCX16(t *testing.T) {
got := CPU.CX16()
expected := CPU.Features&CX16 == CX16
if got != expected {
t.Fatalf("CX16: expected %v, got %v", expected, got)
}
t.Log("CX16 Support:", got)
}
// TestSGX tests SGX() function
func TestSGX(t *testing.T) {
got := CPU.SGX.Available
expected := CPU.Features&SGX == SGX
if got != expected {
t.Fatalf("SGX: expected %v, got %v", expected, got)
}
t.Log("SGX Support:", got)
}
// TestBMI1 tests BMI1() function
func TestBMI1(t *testing.T) {
got := CPU.BMI1()
expected := CPU.Features&BMI1 == BMI1
if got != expected {
t.Fatalf("BMI1: expected %v, got %v", expected, got)
}
t.Log("BMI1 Support:", got)
}
// TestBMI2 tests BMI2() function
func TestBMI2(t *testing.T) {
got := CPU.BMI2()
expected := CPU.Features&BMI2 == BMI2
if got != expected {
t.Fatalf("BMI2: expected %v, got %v", expected, got)
}
t.Log("BMI2 Support:", got)
}
// TestTBM tests TBM() function
func TestTBM(t *testing.T) {
got := CPU.TBM()
expected := CPU.Features&TBM == TBM
if got != expected {
t.Fatalf("TBM: expected %v, got %v", expected, got)
}
t.Log("TBM Support:", got)
}
// TestLzcnt tests Lzcnt() function
func TestLzcnt(t *testing.T) {
got := CPU.Lzcnt()
expected := CPU.Features&LZCNT == LZCNT
if got != expected {
t.Fatalf("Lzcnt: expected %v, got %v", expected, got)
}
t.Log("LZCNT Support:", got)
}
// TestLzcnt tests Lzcnt() function
func TestPopcnt(t *testing.T) {
got := CPU.Popcnt()
expected := CPU.Features&POPCNT == POPCNT
if got != expected {
t.Fatalf("Popcnt: expected %v, got %v", expected, got)
}
t.Log("POPCNT Support:", got)
}
// TestAesNi tests AesNi() function
func TestAesNi(t *testing.T) {
got := CPU.AesNi()
expected := CPU.Features&AESNI == AESNI
if got != expected {
t.Fatalf("AesNi: expected %v, got %v", expected, got)
}
t.Log("AESNI Support:", got)
}
// TestHTT tests HTT() function
func TestHTT(t *testing.T) {
got := CPU.HTT()
expected := CPU.Features&HTT == HTT
if got != expected {
t.Fatalf("HTT: expected %v, got %v", expected, got)
}
t.Log("HTT Support:", got)
}
// TestClmul tests Clmul() function
func TestClmul(t *testing.T) {
got := CPU.Clmul()
expected := CPU.Features&CLMUL == CLMUL
if got != expected {
t.Fatalf("Clmul: expected %v, got %v", expected, got)
}
t.Log("CLMUL Support:", got)
}
// TestSSE2Slow tests SSE2Slow() function
func TestSSE2Slow(t *testing.T) {
got := CPU.SSE2Slow()
expected := CPU.Features&SSE2SLOW == SSE2SLOW
if got != expected {
t.Fatalf("SSE2Slow: expected %v, got %v", expected, got)
}
t.Log("SSE2SLOW Support:", got)
}
// TestSSE3Slow tests SSE3slow() function
func TestSSE3Slow(t *testing.T) {
got := CPU.SSE3Slow()
expected := CPU.Features&SSE3SLOW == SSE3SLOW
if got != expected {
t.Fatalf("SSE3slow: expected %v, got %v", expected, got)
}
t.Log("SSE3SLOW Support:", got)
}
// TestAtom tests Atom() function
func TestAtom(t *testing.T) {
got := CPU.Atom()
expected := CPU.Features&ATOM == ATOM
if got != expected {
t.Fatalf("Atom: expected %v, got %v", expected, got)
}
t.Log("ATOM Support:", got)
}
// TestNX tests NX() function (NX (No-Execute) bit)
func TestNX(t *testing.T) {
got := CPU.NX()
expected := CPU.Features&NX == NX
if got != expected {
t.Fatalf("NX: expected %v, got %v", expected, got)
}
t.Log("NX Support:", got)
}
// TestSSE4A tests SSE4A() function (AMD Barcelona microarchitecture SSE4a instructions)
func TestSSE4A(t *testing.T) {
got := CPU.SSE4A()
expected := CPU.Features&SSE4A == SSE4A
if got != expected {
t.Fatalf("SSE4A: expected %v, got %v", expected, got)
}
t.Log("SSE4A Support:", got)
}
// TestHLE tests HLE() function (Hardware Lock Elision)
func TestHLE(t *testing.T) {
got := CPU.HLE()
expected := CPU.Features&HLE == HLE
if got != expected {
t.Fatalf("HLE: expected %v, got %v", expected, got)
}
t.Log("HLE Support:", got)
}
// TestRTM tests RTM() function (Restricted Transactional Memory)
func TestRTM(t *testing.T) {
got := CPU.RTM()
expected := CPU.Features&RTM == RTM
if got != expected {
t.Fatalf("RTM: expected %v, got %v", expected, got)
}
t.Log("RTM Support:", got)
}
// TestRdrand tests RDRAND() function (RDRAND instruction is available)
func TestRdrand(t *testing.T) {
got := CPU.Rdrand()
expected := CPU.Features&RDRAND == RDRAND
if got != expected {
t.Fatalf("Rdrand: expected %v, got %v", expected, got)
}
t.Log("Rdrand Support:", got)
}
// TestRdseed tests RDSEED() function (RDSEED instruction is available)
func TestRdseed(t *testing.T) {
got := CPU.Rdseed()
expected := CPU.Features&RDSEED == RDSEED
if got != expected {
t.Fatalf("Rdseed: expected %v, got %v", expected, got)
}
t.Log("Rdseed Support:", got)
}
// TestADX tests ADX() function (Intel ADX (Multi-Precision Add-Carry Instruction Extensions))
func TestADX(t *testing.T) {
got := CPU.ADX()
expected := CPU.Features&ADX == ADX
if got != expected {
t.Fatalf("ADX: expected %v, got %v", expected, got)
}
t.Log("ADX Support:", got)
}
// TestSHA tests SHA() function (Intel SHA Extensions)
func TestSHA(t *testing.T) {
got := CPU.SHA()
expected := CPU.Features&SHA == SHA
if got != expected {
t.Fatalf("SHA: expected %v, got %v", expected, got)
}
t.Log("SHA Support:", got)
}
// TestAVX512F tests AVX512F() function (AVX-512 Foundation)
func TestAVX512F(t *testing.T) {
got := CPU.AVX512F()
expected := CPU.Features&AVX512F == AVX512F
if got != expected {
t.Fatalf("AVX512F: expected %v, got %v", expected, got)
}
t.Log("AVX512F Support:", got)
}
// TestAVX512DQ tests AVX512DQ() function (AVX-512 Doubleword and Quadword Instructions)
func TestAVX512DQ(t *testing.T) {
got := CPU.AVX512DQ()
expected := CPU.Features&AVX512DQ == AVX512DQ
if got != expected {
t.Fatalf("AVX512DQ: expected %v, got %v", expected, got)
}
t.Log("AVX512DQ Support:", got)
}
// TestAVX512IFMA tests AVX512IFMA() function (AVX-512 Integer Fused Multiply-Add Instructions)
func TestAVX512IFMA(t *testing.T) {
got := CPU.AVX512IFMA()
expected := CPU.Features&AVX512IFMA == AVX512IFMA
if got != expected {
t.Fatalf("AVX512IFMA: expected %v, got %v", expected, got)
}
t.Log("AVX512IFMA Support:", got)
}
// TestAVX512PF tests AVX512PF() function (AVX-512 Prefetch Instructions)
func TestAVX512PF(t *testing.T) {
got := CPU.AVX512PF()
expected := CPU.Features&AVX512PF == AVX512PF
if got != expected {
t.Fatalf("AVX512PF: expected %v, got %v", expected, got)
}
t.Log("AVX512PF Support:", got)
}
// TestAVX512ER tests AVX512ER() function (AVX-512 Exponential and Reciprocal Instructions)
func TestAVX512ER(t *testing.T) {
got := CPU.AVX512ER()
expected := CPU.Features&AVX512ER == AVX512ER
if got != expected {
t.Fatalf("AVX512ER: expected %v, got %v", expected, got)
}
t.Log("AVX512ER Support:", got)
}
// TestAVX512CD tests AVX512CD() function (AVX-512 Conflict Detection Instructions)
func TestAVX512CD(t *testing.T) {
got := CPU.AVX512CD()
expected := CPU.Features&AVX512CD == AVX512CD
if got != expected {
t.Fatalf("AVX512CD: expected %v, got %v", expected, got)
}
t.Log("AVX512CD Support:", got)
}
// TestAVX512BW tests AVX512BW() function (AVX-512 Byte and Word Instructions)
func TestAVX512BW(t *testing.T) {
got := CPU.AVX512BW()
expected := CPU.Features&AVX512BW == AVX512BW
if got != expected {
t.Fatalf("AVX512BW: expected %v, got %v", expected, got)
}
t.Log("AVX512BW Support:", got)
}
// TestAVX512VL tests AVX512VL() function (AVX-512 Vector Length Extensions)
func TestAVX512VL(t *testing.T) {
got := CPU.AVX512VL()
expected := CPU.Features&AVX512VL == AVX512VL
if got != expected {
t.Fatalf("AVX512VL: expected %v, got %v", expected, got)
}
t.Log("AVX512VL Support:", got)
}
// TestAVX512VL tests AVX512VBMI() function (AVX-512 Vector Bit Manipulation Instructions)
func TestAVX512VBMI(t *testing.T) {
got := CPU.AVX512VBMI()
expected := CPU.Features&AVX512VBMI == AVX512VBMI
if got != expected {
t.Fatalf("AVX512VBMI: expected %v, got %v", expected, got)
}
t.Log("AVX512VBMI Support:", got)
}
// TestMPX tests MPX() function (Intel MPX (Memory Protection Extensions))
func TestMPX(t *testing.T) {
got := CPU.MPX()
expected := CPU.Features&MPX == MPX
if got != expected {
t.Fatalf("MPX: expected %v, got %v", expected, got)
}
t.Log("MPX Support:", got)
}
// TestERMS tests ERMS() function (Enhanced REP MOVSB/STOSB)
func TestERMS(t *testing.T) {
got := CPU.ERMS()
expected := CPU.Features&ERMS == ERMS
if got != expected {
t.Fatalf("ERMS: expected %v, got %v", expected, got)
}
t.Log("ERMS Support:", got)
}
// TestVendor writes the detected vendor. Will be 0 if unknown
func TestVendor(t *testing.T) {
t.Log("Vendor ID:", CPU.VendorID)
}
// Intel returns true if vendor is recognized as Intel
func TestIntel(t *testing.T) {
got := CPU.Intel()
expected := CPU.VendorID == Intel
if got != expected {
t.Fatalf("TestIntel: expected %v, got %v", expected, got)
}
t.Log("TestIntel:", got)
}
// AMD returns true if vendor is recognized as AMD
func TestAMD(t *testing.T) {
got := CPU.AMD()
expected := CPU.VendorID == AMD
if got != expected {
t.Fatalf("TestAMD: expected %v, got %v", expected, got)
}
t.Log("TestAMD:", got)
}
// Transmeta returns true if vendor is recognized as Transmeta
func TestTransmeta(t *testing.T) {
got := CPU.Transmeta()
expected := CPU.VendorID == Transmeta
if got != expected {
t.Fatalf("TestTransmeta: expected %v, got %v", expected, got)
}
t.Log("TestTransmeta:", got)
}
// NSC returns true if vendor is recognized as National Semiconductor
func TestNSC(t *testing.T) {
got := CPU.NSC()
expected := CPU.VendorID == NSC
if got != expected {
t.Fatalf("TestNSC: expected %v, got %v", expected, got)
}
t.Log("TestNSC:", got)
}
// VIA returns true if vendor is recognized as VIA
func TestVIA(t *testing.T) {
got := CPU.VIA()
expected := CPU.VendorID == VIA
if got != expected {
t.Fatalf("TestVIA: expected %v, got %v", expected, got)
}
t.Log("TestVIA:", got)
}
// Test VM function
func TestVM(t *testing.T) {
t.Log("Vendor ID:", CPU.VM())
}
// NSC returns true if vendor is recognized as National Semiconductor
func TestCPUInfo_TSX(t *testing.T) {
got := CPU.TSX()
expected := CPU.HLE() && CPU.RTM()
if got != expected {
t.Fatalf("TestNSC: expected %v, got %v", expected, got)
}
t.Log("TestNSC:", got)
}
// Test RTCounter function
func TestRtCounter(t *testing.T) {
a := CPU.RTCounter()
b := CPU.RTCounter()
t.Log("CPU Counter:", a, b, b-a)
}
// Prints the value of Ia32TscAux()
func TestIa32TscAux(t *testing.T) {
ecx := CPU.Ia32TscAux()
t.Logf("Ia32TscAux:0x%x\n", ecx)
if ecx != 0 {
chip := (ecx & 0xFFF000) >> 12
core := ecx & 0xFFF
t.Log("Likely chip, core:", chip, core)
}
}
func TestThreadsPerCoreNZ(t *testing.T) {
if CPU.ThreadsPerCore == 0 {
t.Fatal("threads per core is zero")
}
}
// Prints the value of LogicalCPU()
func TestLogicalCPU(t *testing.T) {
t.Log("Currently executing on cpu:", CPU.LogicalCPU())
}
func TestMaxFunction(t *testing.T) {
expect := maxFunctionID()
if CPU.maxFunc != expect {
t.Fatal("Max function does not match, expected", expect, "but got", CPU.maxFunc)
}
expect = maxExtendedFunction()
if CPU.maxExFunc != expect {
t.Fatal("Max Extended function does not match, expected", expect, "but got", CPU.maxFunc)
}
}
// This example will calculate the chip/core number on Linux
// Linux encodes numa id (<<12) and core id (8bit) into TSC_AUX.
func ExampleCPUInfo_Ia32TscAux() {
ecx := CPU.Ia32TscAux()
if ecx == 0 {
fmt.Println("Unknown CPU ID")
return
}
chip := (ecx & 0xFFF000) >> 12
core := ecx & 0xFFF
fmt.Println("Chip, Core:", chip, core)
}
/*
func TestPhysical(t *testing.T) {
var test16 = "CPUID 00000000: 0000000d-756e6547-6c65746e-49656e69 \nCPUID 00000001: 000206d7-03200800-1fbee3ff-bfebfbff \nCPUID 00000002: 76035a01-00f0b2ff-00000000-00ca0000 \nCPUID 00000003: 00000000-00000000-00000000-00000000 \nCPUID 00000004: 3c004121-01c0003f-0000003f-00000000 \nCPUID 00000004: 3c004122-01c0003f-0000003f-00000000 \nCPUID 00000004: 3c004143-01c0003f-000001ff-00000000 \nCPUID 00000004: 3c07c163-04c0003f-00003fff-00000006 \nCPUID 00000005: 00000040-00000040-00000003-00021120 \nCPUID 00000006: 00000075-00000002-00000009-00000000 \nCPUID 00000007: 00000000-00000000-00000000-00000000 \nCPUID 00000008: 00000000-00000000-00000000-00000000 \nCPUID 00000009: 00000001-00000000-00000000-00000000 \nCPUID 0000000a: 07300403-00000000-00000000-00000603 \nCPUID 0000000b: 00000000-00000000-00000003-00000003 \nCPUID 0000000b: 00000005-00000010-00000201-00000003 \nCPUID 0000000c: 00000000-00000000-00000000-00000000 \nCPUID 0000000d: 00000007-00000340-00000340-00000000 \nCPUID 0000000d: 00000001-00000000-00000000-00000000 \nCPUID 0000000d: 00000100-00000240-00000000-00000000 \nCPUID 80000000: 80000008-00000000-00000000-00000000 \nCPUID 80000001: 00000000-00000000-00000001-2c100800 \nCPUID 80000002: 20202020-49202020-6c65746e-20295228 \nCPUID 80000003: 6e6f6558-20295228-20555043-322d3545 \nCPUID 80000004: 20303636-20402030-30322e32-007a4847 \nCPUID 80000005: 00000000-00000000-00000000-00000000 \nCPUID 80000006: 00000000-00000000-01006040-00000000 \nCPUID 80000007: 00000000-00000000-00000000-00000100 \nCPUID 80000008: 0000302e-00000000-00000000-00000000"
restore := mockCPU([]byte(test16))
Detect()
t.Log("Name:", CPU.BrandName)
n := maxFunctionID()
t.Logf("Max Function:0x%x\n", n)
n = maxExtendedFunction()
t.Logf("Max Extended Function:0x%x\n", n)
t.Log("PhysicalCores:", CPU.PhysicalCores)
t.Log("ThreadsPerCore:", CPU.ThreadsPerCore)
t.Log("LogicalCores:", CPU.LogicalCores)
t.Log("Family", CPU.Family, "Model:", CPU.Model)
t.Log("Features:", CPU.Features)
t.Log("Cacheline bytes:", CPU.CacheLine)
t.Log("L1 Instruction Cache:", CPU.Cache.L1I, "bytes")
t.Log("L1 Data Cache:", CPU.Cache.L1D, "bytes")
t.Log("L2 Cache:", CPU.Cache.L2, "bytes")
t.Log("L3 Cache:", CPU.Cache.L3, "bytes")
if CPU.LogicalCores > 0 && CPU.PhysicalCores > 0 {
if CPU.LogicalCores != CPU.PhysicalCores*CPU.ThreadsPerCore {
t.Fatalf("Core count mismatch, LogicalCores (%d) != PhysicalCores (%d) * CPU.ThreadsPerCore (%d)",
CPU.LogicalCores, CPU.PhysicalCores, CPU.ThreadsPerCore)
}
}
if CPU.ThreadsPerCore > 1 && !CPU.HTT() {
t.Fatalf("Hyperthreading not detected")
}
if CPU.ThreadsPerCore == 1 && CPU.HTT() {
t.Fatalf("Hyperthreading detected, but only 1 Thread per core")
}
restore()
Detect()
TestCPUID(t)
}
*/

17
vendor/github.com/klauspost/cpuid/detect_intel.go generated vendored Normal file
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// Copyright (c) 2015 Klaus Post, released under MIT License. See LICENSE file.
// +build 386,!gccgo amd64,!gccgo
package cpuid
func asmCpuid(op uint32) (eax, ebx, ecx, edx uint32)
func asmCpuidex(op, op2 uint32) (eax, ebx, ecx, edx uint32)
func asmXgetbv(index uint32) (eax, edx uint32)
func asmRdtscpAsm() (eax, ebx, ecx, edx uint32)
func initCPU() {
cpuid = asmCpuid
cpuidex = asmCpuidex
xgetbv = asmXgetbv
rdtscpAsm = asmRdtscpAsm
}

23
vendor/github.com/klauspost/cpuid/detect_ref.go generated vendored Normal file
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@@ -0,0 +1,23 @@
// Copyright (c) 2015 Klaus Post, released under MIT License. See LICENSE file.
// +build !amd64,!386 gccgo
package cpuid
func initCPU() {
cpuid = func(op uint32) (eax, ebx, ecx, edx uint32) {
return 0, 0, 0, 0
}
cpuidex = func(op, op2 uint32) (eax, ebx, ecx, edx uint32) {
return 0, 0, 0, 0
}
xgetbv = func(index uint32) (eax, edx uint32) {
return 0, 0
}
rdtscpAsm = func() (eax, ebx, ecx, edx uint32) {
return 0, 0, 0, 0
}
}

4
vendor/github.com/klauspost/cpuid/generate.go generated vendored Normal file
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@@ -0,0 +1,4 @@
package cpuid
//go:generate go run private-gen.go
//go:generate gofmt -w ./private

209
vendor/github.com/klauspost/cpuid/mockcpu_test.go generated vendored Normal file
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@@ -0,0 +1,209 @@
package cpuid
import (
"archive/zip"
"fmt"
"io/ioutil"
"sort"
"strings"
"testing"
)
type fakecpuid map[uint32][][]uint32
type idfuncs struct {
cpuid func(op uint32) (eax, ebx, ecx, edx uint32)
cpuidex func(op, op2 uint32) (eax, ebx, ecx, edx uint32)
xgetbv func(index uint32) (eax, edx uint32)
}
func (f fakecpuid) String() string {
var out = make([]string, 0, len(f))
for key, val := range f {
for _, v := range val {
out = append(out, fmt.Sprintf("CPUID %08x: [%08x, %08x, %08x, %08x]", key, v[0], v[1], v[2], v[3]))
}
}
sorter := sort.StringSlice(out)
sort.Sort(&sorter)
return strings.Join(sorter, "\n")
}
func mockCPU(def []byte) func() {
lines := strings.Split(string(def), "\n")
anyfound := false
fakeID := make(fakecpuid)
for _, line := range lines {
line = strings.Trim(line, "\r\t ")
if !strings.HasPrefix(line, "CPUID") {
continue
}
// Only collect for first cpu
if strings.HasPrefix(line, "CPUID 00000000") {
if anyfound {
break
}
}
if !strings.Contains(line, "-") {
//continue
}
items := strings.Split(line, ":")
if len(items) < 2 {
if len(line) == 51 || len(line) == 50 {
items = []string{line[0:14], line[15:]}
} else {
items = strings.Split(line, "\t")
if len(items) != 2 {
//fmt.Println("not found:", line, "len:", len(line))
continue
}
}
}
items = items[0:2]
vals := strings.Trim(items[1], "\r\n ")
var idV uint32
n, err := fmt.Sscanf(items[0], "CPUID %x", &idV)
if err != nil || n != 1 {
continue
}
existing, ok := fakeID[idV]
if !ok {
existing = make([][]uint32, 0)
}
values := make([]uint32, 4)
n, err = fmt.Sscanf(vals, "%x-%x-%x-%x", &values[0], &values[1], &values[2], &values[3])
if n != 4 || err != nil {
n, err = fmt.Sscanf(vals, "%x %x %x %x", &values[0], &values[1], &values[2], &values[3])
if n != 4 || err != nil {
//fmt.Println("scanned", vals, "got", n, "Err:", err)
continue
}
}
existing = append(existing, values)
fakeID[idV] = existing
anyfound = true
}
restorer := func(f idfuncs) func() {
return func() {
cpuid = f.cpuid
cpuidex = f.cpuidex
xgetbv = f.xgetbv
}
}(idfuncs{cpuid: cpuid, cpuidex: cpuidex, xgetbv: xgetbv})
cpuid = func(op uint32) (eax, ebx, ecx, edx uint32) {
if op == 0x80000000 || op == 0 {
var ok bool
_, ok = fakeID[op]
if !ok {
return 0, 0, 0, 0
}
}
first, ok := fakeID[op]
if !ok {
if op > maxFunctionID() {
panic(fmt.Sprintf("Base not found: %v, request:%#v\n", fakeID, op))
} else {
// we have some entries missing
return 0, 0, 0, 0
}
}
theid := first[0]
return theid[0], theid[1], theid[2], theid[3]
}
cpuidex = func(op, op2 uint32) (eax, ebx, ecx, edx uint32) {
if op == 0x80000000 {
var ok bool
_, ok = fakeID[op]
if !ok {
return 0, 0, 0, 0
}
}
first, ok := fakeID[op]
if !ok {
if op > maxExtendedFunction() {
panic(fmt.Sprintf("Extended not found Info: %v, request:%#v, %#v\n", fakeID, op, op2))
} else {
// we have some entries missing
return 0, 0, 0, 0
}
}
if int(op2) >= len(first) {
//fmt.Printf("Extended not found Info: %v, request:%#v, %#v\n", fakeID, op, op2)
return 0, 0, 0, 0
}
theid := first[op2]
return theid[0], theid[1], theid[2], theid[3]
}
xgetbv = func(index uint32) (eax, edx uint32) {
first, ok := fakeID[1]
if !ok {
panic(fmt.Sprintf("XGETBV not supported %v", fakeID))
}
second := first[0]
// ECX bit 26 must be set
if (second[2] & 1 << 26) == 0 {
panic(fmt.Sprintf("XGETBV not supported %v", fakeID))
}
// We don't have any data to return, unfortunately
return 0, 0
}
return restorer
}
func TestMocks(t *testing.T) {
zr, err := zip.OpenReader("testdata/cpuid_data.zip")
if err != nil {
t.Skip("No testdata:", err)
}
defer zr.Close()
for _, f := range zr.File {
rc, err := f.Open()
if err != nil {
t.Fatal(err)
}
content, err := ioutil.ReadAll(rc)
if err != nil {
t.Fatal(err)
}
rc.Close()
t.Log("Opening", f.FileInfo().Name())
restore := mockCPU(content)
Detect()
t.Log("Name:", CPU.BrandName)
n := maxFunctionID()
t.Logf("Max Function:0x%x\n", n)
n = maxExtendedFunction()
t.Logf("Max Extended Function:0x%x\n", n)
t.Log("PhysicalCores:", CPU.PhysicalCores)
t.Log("ThreadsPerCore:", CPU.ThreadsPerCore)
t.Log("LogicalCores:", CPU.LogicalCores)
t.Log("Family", CPU.Family, "Model:", CPU.Model)
t.Log("Features:", CPU.Features)
t.Log("Cacheline bytes:", CPU.CacheLine)
t.Log("L1 Instruction Cache:", CPU.Cache.L1I, "bytes")
t.Log("L1 Data Cache:", CPU.Cache.L1D, "bytes")
t.Log("L2 Cache:", CPU.Cache.L2, "bytes")
t.Log("L3 Cache:", CPU.Cache.L3, "bytes")
if CPU.LogicalCores > 0 && CPU.PhysicalCores > 0 {
if CPU.LogicalCores != CPU.PhysicalCores*CPU.ThreadsPerCore {
t.Fatalf("Core count mismatch, LogicalCores (%d) != PhysicalCores (%d) * CPU.ThreadsPerCore (%d)",
CPU.LogicalCores, CPU.PhysicalCores, CPU.ThreadsPerCore)
}
}
if CPU.ThreadsPerCore > 1 && !CPU.HTT() {
t.Fatalf("Hyperthreading not detected")
}
if CPU.ThreadsPerCore == 1 && CPU.HTT() {
t.Fatalf("Hyperthreading detected, but only 1 Thread per core")
}
restore()
}
Detect()
}

476
vendor/github.com/klauspost/cpuid/private-gen.go generated vendored Normal file
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@@ -0,0 +1,476 @@
// +build ignore
package main
import (
"bytes"
"fmt"
"go/ast"
"go/parser"
"go/printer"
"go/token"
"io"
"io/ioutil"
"log"
"os"
"reflect"
"strings"
"unicode"
"unicode/utf8"
)
var inFiles = []string{"cpuid.go", "cpuid_test.go"}
var copyFiles = []string{"cpuid_amd64.s", "cpuid_386.s", "detect_ref.go", "detect_intel.go"}
var fileSet = token.NewFileSet()
var reWrites = []rewrite{
initRewrite("CPUInfo -> cpuInfo"),
initRewrite("Vendor -> vendor"),
initRewrite("Flags -> flags"),
initRewrite("Detect -> detect"),
initRewrite("CPU -> cpu"),
}
var excludeNames = map[string]bool{"string": true, "join": true, "trim": true,
// cpuid_test.go
"t": true, "println": true, "logf": true, "log": true, "fatalf": true, "fatal": true,
}
var excludePrefixes = []string{"test", "benchmark"}
func main() {
Package := "private"
parserMode := parser.ParseComments
exported := make(map[string]rewrite)
for _, file := range inFiles {
in, err := os.Open(file)
if err != nil {
log.Fatalf("opening input", err)
}
src, err := ioutil.ReadAll(in)
if err != nil {
log.Fatalf("reading input", err)
}
astfile, err := parser.ParseFile(fileSet, file, src, parserMode)
if err != nil {
log.Fatalf("parsing input", err)
}
for _, rw := range reWrites {
astfile = rw(astfile)
}
// Inspect the AST and print all identifiers and literals.
var startDecl token.Pos
var endDecl token.Pos
ast.Inspect(astfile, func(n ast.Node) bool {
var s string
switch x := n.(type) {
case *ast.Ident:
if x.IsExported() {
t := strings.ToLower(x.Name)
for _, pre := range excludePrefixes {
if strings.HasPrefix(t, pre) {
return true
}
}
if excludeNames[t] != true {
//if x.Pos() > startDecl && x.Pos() < endDecl {
exported[x.Name] = initRewrite(x.Name + " -> " + t)
}
}
case *ast.GenDecl:
if x.Tok == token.CONST && x.Lparen > 0 {
startDecl = x.Lparen
endDecl = x.Rparen
// fmt.Printf("Decl:%s -> %s\n", fileSet.Position(startDecl), fileSet.Position(endDecl))
}
}
if s != "" {
fmt.Printf("%s:\t%s\n", fileSet.Position(n.Pos()), s)
}
return true
})
for _, rw := range exported {
astfile = rw(astfile)
}
var buf bytes.Buffer
printer.Fprint(&buf, fileSet, astfile)
// Remove package documentation and insert information
s := buf.String()
ind := strings.Index(buf.String(), "\npackage cpuid")
s = s[ind:]
s = "// Generated, DO NOT EDIT,\n" +
"// but copy it to your own project and rename the package.\n" +
"// See more at http://github.com/klauspost/cpuid\n" +
s
outputName := Package + string(os.PathSeparator) + file
err = ioutil.WriteFile(outputName, []byte(s), 0644)
if err != nil {
log.Fatalf("writing output: %s", err)
}
log.Println("Generated", outputName)
}
for _, file := range copyFiles {
dst := ""
if strings.HasPrefix(file, "cpuid") {
dst = Package + string(os.PathSeparator) + file
} else {
dst = Package + string(os.PathSeparator) + "cpuid_" + file
}
err := copyFile(file, dst)
if err != nil {
log.Fatalf("copying file: %s", err)
}
log.Println("Copied", dst)
}
}
// CopyFile copies a file from src to dst. If src and dst files exist, and are
// the same, then return success. Copy the file contents from src to dst.
func copyFile(src, dst string) (err error) {
sfi, err := os.Stat(src)
if err != nil {
return
}
if !sfi.Mode().IsRegular() {
// cannot copy non-regular files (e.g., directories,
// symlinks, devices, etc.)
return fmt.Errorf("CopyFile: non-regular source file %s (%q)", sfi.Name(), sfi.Mode().String())
}
dfi, err := os.Stat(dst)
if err != nil {
if !os.IsNotExist(err) {
return
}
} else {
if !(dfi.Mode().IsRegular()) {
return fmt.Errorf("CopyFile: non-regular destination file %s (%q)", dfi.Name(), dfi.Mode().String())
}
if os.SameFile(sfi, dfi) {
return
}
}
err = copyFileContents(src, dst)
return
}
// copyFileContents copies the contents of the file named src to the file named
// by dst. The file will be created if it does not already exist. If the
// destination file exists, all it's contents will be replaced by the contents
// of the source file.
func copyFileContents(src, dst string) (err error) {
in, err := os.Open(src)
if err != nil {
return
}
defer in.Close()
out, err := os.Create(dst)
if err != nil {
return
}
defer func() {
cerr := out.Close()
if err == nil {
err = cerr
}
}()
if _, err = io.Copy(out, in); err != nil {
return
}
err = out.Sync()
return
}
type rewrite func(*ast.File) *ast.File
// Mostly copied from gofmt
func initRewrite(rewriteRule string) rewrite {
f := strings.Split(rewriteRule, "->")
if len(f) != 2 {
fmt.Fprintf(os.Stderr, "rewrite rule must be of the form 'pattern -> replacement'\n")
os.Exit(2)
}
pattern := parseExpr(f[0], "pattern")
replace := parseExpr(f[1], "replacement")
return func(p *ast.File) *ast.File { return rewriteFile(pattern, replace, p) }
}
// parseExpr parses s as an expression.
// It might make sense to expand this to allow statement patterns,
// but there are problems with preserving formatting and also
// with what a wildcard for a statement looks like.
func parseExpr(s, what string) ast.Expr {
x, err := parser.ParseExpr(s)
if err != nil {
fmt.Fprintf(os.Stderr, "parsing %s %s at %s\n", what, s, err)
os.Exit(2)
}
return x
}
// Keep this function for debugging.
/*
func dump(msg string, val reflect.Value) {
fmt.Printf("%s:\n", msg)
ast.Print(fileSet, val.Interface())
fmt.Println()
}
*/
// rewriteFile applies the rewrite rule 'pattern -> replace' to an entire file.
func rewriteFile(pattern, replace ast.Expr, p *ast.File) *ast.File {
cmap := ast.NewCommentMap(fileSet, p, p.Comments)
m := make(map[string]reflect.Value)
pat := reflect.ValueOf(pattern)
repl := reflect.ValueOf(replace)
var rewriteVal func(val reflect.Value) reflect.Value
rewriteVal = func(val reflect.Value) reflect.Value {
// don't bother if val is invalid to start with
if !val.IsValid() {
return reflect.Value{}
}
for k := range m {
delete(m, k)
}
val = apply(rewriteVal, val)
if match(m, pat, val) {
val = subst(m, repl, reflect.ValueOf(val.Interface().(ast.Node).Pos()))
}
return val
}
r := apply(rewriteVal, reflect.ValueOf(p)).Interface().(*ast.File)
r.Comments = cmap.Filter(r).Comments() // recreate comments list
return r
}
// set is a wrapper for x.Set(y); it protects the caller from panics if x cannot be changed to y.
func set(x, y reflect.Value) {
// don't bother if x cannot be set or y is invalid
if !x.CanSet() || !y.IsValid() {
return
}
defer func() {
if x := recover(); x != nil {
if s, ok := x.(string); ok &&
(strings.Contains(s, "type mismatch") || strings.Contains(s, "not assignable")) {
// x cannot be set to y - ignore this rewrite
return
}
panic(x)
}
}()
x.Set(y)
}
// Values/types for special cases.
var (
objectPtrNil = reflect.ValueOf((*ast.Object)(nil))
scopePtrNil = reflect.ValueOf((*ast.Scope)(nil))
identType = reflect.TypeOf((*ast.Ident)(nil))
objectPtrType = reflect.TypeOf((*ast.Object)(nil))
positionType = reflect.TypeOf(token.NoPos)
callExprType = reflect.TypeOf((*ast.CallExpr)(nil))
scopePtrType = reflect.TypeOf((*ast.Scope)(nil))
)
// apply replaces each AST field x in val with f(x), returning val.
// To avoid extra conversions, f operates on the reflect.Value form.
func apply(f func(reflect.Value) reflect.Value, val reflect.Value) reflect.Value {
if !val.IsValid() {
return reflect.Value{}
}
// *ast.Objects introduce cycles and are likely incorrect after
// rewrite; don't follow them but replace with nil instead
if val.Type() == objectPtrType {
return objectPtrNil
}
// similarly for scopes: they are likely incorrect after a rewrite;
// replace them with nil
if val.Type() == scopePtrType {
return scopePtrNil
}
switch v := reflect.Indirect(val); v.Kind() {
case reflect.Slice:
for i := 0; i < v.Len(); i++ {
e := v.Index(i)
set(e, f(e))
}
case reflect.Struct:
for i := 0; i < v.NumField(); i++ {
e := v.Field(i)
set(e, f(e))
}
case reflect.Interface:
e := v.Elem()
set(v, f(e))
}
return val
}
func isWildcard(s string) bool {
rune, size := utf8.DecodeRuneInString(s)
return size == len(s) && unicode.IsLower(rune)
}
// match returns true if pattern matches val,
// recording wildcard submatches in m.
// If m == nil, match checks whether pattern == val.
func match(m map[string]reflect.Value, pattern, val reflect.Value) bool {
// Wildcard matches any expression. If it appears multiple
// times in the pattern, it must match the same expression
// each time.
if m != nil && pattern.IsValid() && pattern.Type() == identType {
name := pattern.Interface().(*ast.Ident).Name
if isWildcard(name) && val.IsValid() {
// wildcards only match valid (non-nil) expressions.
if _, ok := val.Interface().(ast.Expr); ok && !val.IsNil() {
if old, ok := m[name]; ok {
return match(nil, old, val)
}
m[name] = val
return true
}
}
}
// Otherwise, pattern and val must match recursively.
if !pattern.IsValid() || !val.IsValid() {
return !pattern.IsValid() && !val.IsValid()
}
if pattern.Type() != val.Type() {
return false
}
// Special cases.
switch pattern.Type() {
case identType:
// For identifiers, only the names need to match
// (and none of the other *ast.Object information).
// This is a common case, handle it all here instead
// of recursing down any further via reflection.
p := pattern.Interface().(*ast.Ident)
v := val.Interface().(*ast.Ident)
return p == nil && v == nil || p != nil && v != nil && p.Name == v.Name
case objectPtrType, positionType:
// object pointers and token positions always match
return true
case callExprType:
// For calls, the Ellipsis fields (token.Position) must
// match since that is how f(x) and f(x...) are different.
// Check them here but fall through for the remaining fields.
p := pattern.Interface().(*ast.CallExpr)
v := val.Interface().(*ast.CallExpr)
if p.Ellipsis.IsValid() != v.Ellipsis.IsValid() {
return false
}
}
p := reflect.Indirect(pattern)
v := reflect.Indirect(val)
if !p.IsValid() || !v.IsValid() {
return !p.IsValid() && !v.IsValid()
}
switch p.Kind() {
case reflect.Slice:
if p.Len() != v.Len() {
return false
}
for i := 0; i < p.Len(); i++ {
if !match(m, p.Index(i), v.Index(i)) {
return false
}
}
return true
case reflect.Struct:
for i := 0; i < p.NumField(); i++ {
if !match(m, p.Field(i), v.Field(i)) {
return false
}
}
return true
case reflect.Interface:
return match(m, p.Elem(), v.Elem())
}
// Handle token integers, etc.
return p.Interface() == v.Interface()
}
// subst returns a copy of pattern with values from m substituted in place
// of wildcards and pos used as the position of tokens from the pattern.
// if m == nil, subst returns a copy of pattern and doesn't change the line
// number information.
func subst(m map[string]reflect.Value, pattern reflect.Value, pos reflect.Value) reflect.Value {
if !pattern.IsValid() {
return reflect.Value{}
}
// Wildcard gets replaced with map value.
if m != nil && pattern.Type() == identType {
name := pattern.Interface().(*ast.Ident).Name
if isWildcard(name) {
if old, ok := m[name]; ok {
return subst(nil, old, reflect.Value{})
}
}
}
if pos.IsValid() && pattern.Type() == positionType {
// use new position only if old position was valid in the first place
if old := pattern.Interface().(token.Pos); !old.IsValid() {
return pattern
}
return pos
}
// Otherwise copy.
switch p := pattern; p.Kind() {
case reflect.Slice:
v := reflect.MakeSlice(p.Type(), p.Len(), p.Len())
for i := 0; i < p.Len(); i++ {
v.Index(i).Set(subst(m, p.Index(i), pos))
}
return v
case reflect.Struct:
v := reflect.New(p.Type()).Elem()
for i := 0; i < p.NumField(); i++ {
v.Field(i).Set(subst(m, p.Field(i), pos))
}
return v
case reflect.Ptr:
v := reflect.New(p.Type()).Elem()
if elem := p.Elem(); elem.IsValid() {
v.Set(subst(m, elem, pos).Addr())
}
return v
case reflect.Interface:
v := reflect.New(p.Type()).Elem()
if elem := p.Elem(); elem.IsValid() {
v.Set(subst(m, elem, pos))
}
return v
}
return pattern
}

6
vendor/github.com/klauspost/cpuid/private/README.md generated vendored Normal file
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# cpuid private
This is a specially converted of the cpuid package, so it can be included in
a package without exporting anything.
Package home: https://github.com/klauspost/cpuid

1024
vendor/github.com/klauspost/cpuid/private/cpuid.go generated vendored Normal file
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42
vendor/github.com/klauspost/cpuid/private/cpuid_386.s generated vendored Normal file
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// Copyright (c) 2015 Klaus Post, released under MIT License. See LICENSE file.
// +build 386,!gccgo
// func asmCpuid(op uint32) (eax, ebx, ecx, edx uint32)
TEXT ·asmCpuid(SB), 7, $0
XORL CX, CX
MOVL op+0(FP), AX
CPUID
MOVL AX, eax+4(FP)
MOVL BX, ebx+8(FP)
MOVL CX, ecx+12(FP)
MOVL DX, edx+16(FP)
RET
// func asmCpuidex(op, op2 uint32) (eax, ebx, ecx, edx uint32)
TEXT ·asmCpuidex(SB), 7, $0
MOVL op+0(FP), AX
MOVL op2+4(FP), CX
CPUID
MOVL AX, eax+8(FP)
MOVL BX, ebx+12(FP)
MOVL CX, ecx+16(FP)
MOVL DX, edx+20(FP)
RET
// func xgetbv(index uint32) (eax, edx uint32)
TEXT ·asmXgetbv(SB), 7, $0
MOVL index+0(FP), CX
BYTE $0x0f; BYTE $0x01; BYTE $0xd0 // XGETBV
MOVL AX, eax+4(FP)
MOVL DX, edx+8(FP)
RET
// func asmRdtscpAsm() (eax, ebx, ecx, edx uint32)
TEXT ·asmRdtscpAsm(SB), 7, $0
BYTE $0x0F; BYTE $0x01; BYTE $0xF9 // RDTSCP
MOVL AX, eax+0(FP)
MOVL BX, ebx+4(FP)
MOVL CX, ecx+8(FP)
MOVL DX, edx+12(FP)
RET

42
vendor/github.com/klauspost/cpuid/private/cpuid_amd64.s generated vendored Normal file
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// Copyright (c) 2015 Klaus Post, released under MIT License. See LICENSE file.
//+build amd64,!gccgo
// func asmCpuid(op uint32) (eax, ebx, ecx, edx uint32)
TEXT ·asmCpuid(SB), 7, $0
XORQ CX, CX
MOVL op+0(FP), AX
CPUID
MOVL AX, eax+8(FP)
MOVL BX, ebx+12(FP)
MOVL CX, ecx+16(FP)
MOVL DX, edx+20(FP)
RET
// func asmCpuidex(op, op2 uint32) (eax, ebx, ecx, edx uint32)
TEXT ·asmCpuidex(SB), 7, $0
MOVL op+0(FP), AX
MOVL op2+4(FP), CX
CPUID
MOVL AX, eax+8(FP)
MOVL BX, ebx+12(FP)
MOVL CX, ecx+16(FP)
MOVL DX, edx+20(FP)
RET
// func asmXgetbv(index uint32) (eax, edx uint32)
TEXT ·asmXgetbv(SB), 7, $0
MOVL index+0(FP), CX
BYTE $0x0f; BYTE $0x01; BYTE $0xd0 // XGETBV
MOVL AX, eax+8(FP)
MOVL DX, edx+12(FP)
RET
// func asmRdtscpAsm() (eax, ebx, ecx, edx uint32)
TEXT ·asmRdtscpAsm(SB), 7, $0
BYTE $0x0F; BYTE $0x01; BYTE $0xF9 // RDTSCP
MOVL AX, eax+0(FP)
MOVL BX, ebx+4(FP)
MOVL CX, ecx+8(FP)
MOVL DX, edx+12(FP)
RET

17
vendor/github.com/klauspost/cpuid/private/cpuid_detect_intel.go generated vendored Normal file
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// Copyright (c) 2015 Klaus Post, released under MIT License. See LICENSE file.
// +build 386,!gccgo amd64,!gccgo
package cpuid
func asmCpuid(op uint32) (eax, ebx, ecx, edx uint32)
func asmCpuidex(op, op2 uint32) (eax, ebx, ecx, edx uint32)
func asmXgetbv(index uint32) (eax, edx uint32)
func asmRdtscpAsm() (eax, ebx, ecx, edx uint32)
func initCPU() {
cpuid = asmCpuid
cpuidex = asmCpuidex
xgetbv = asmXgetbv
rdtscpAsm = asmRdtscpAsm
}

23
vendor/github.com/klauspost/cpuid/private/cpuid_detect_ref.go generated vendored Normal file
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// Copyright (c) 2015 Klaus Post, released under MIT License. See LICENSE file.
// +build !amd64,!386 gccgo
package cpuid
func initCPU() {
cpuid = func(op uint32) (eax, ebx, ecx, edx uint32) {
return 0, 0, 0, 0
}
cpuidex = func(op, op2 uint32) (eax, ebx, ecx, edx uint32) {
return 0, 0, 0, 0
}
xgetbv = func(index uint32) (eax, edx uint32) {
return 0, 0
}
rdtscpAsm = func() (eax, ebx, ecx, edx uint32) {
return 0, 0, 0, 0
}
}

739
vendor/github.com/klauspost/cpuid/private/cpuid_test.go generated vendored Normal file
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// Generated, DO NOT EDIT,
// but copy it to your own project and rename the package.
// See more at http://github.com/klauspost/cpuid
package cpuid
import (
"fmt"
"testing"
)
// There is no real way to test a CPU identifier, since results will
// obviously differ on each machine.
func TestCPUID(t *testing.T) {
n := maxFunctionID()
t.Logf("Max Function:0x%x\n", n)
n = maxExtendedFunction()
t.Logf("Max Extended Function:0x%x\n", n)
t.Log("Name:", cpu.brandname)
t.Log("PhysicalCores:", cpu.physicalcores)
t.Log("ThreadsPerCore:", cpu.threadspercore)
t.Log("LogicalCores:", cpu.logicalcores)
t.Log("Family", cpu.family, "Model:", cpu.model)
t.Log("Features:", cpu.features)
t.Log("Cacheline bytes:", cpu.cacheline)
t.Log("L1 Instruction Cache:", cpu.cache.l1i, "bytes")
t.Log("L1 Data Cache:", cpu.cache.l1d, "bytes")
t.Log("L2 Cache:", cpu.cache.l2, "bytes")
t.Log("L3 Cache:", cpu.cache.l3, "bytes")
if cpu.sse2() {
t.Log("We have SSE2")
}
}
func TestDumpCPUID(t *testing.T) {
n := int(maxFunctionID())
for i := 0; i <= n; i++ {
a, b, c, d := cpuidex(uint32(i), 0)
t.Logf("CPUID %08x: %08x-%08x-%08x-%08x", i, a, b, c, d)
ex := uint32(1)
for {
a2, b2, c2, d2 := cpuidex(uint32(i), ex)
if a2 == a && b2 == b && d2 == d || ex > 50 || a2 == 0 {
break
}
t.Logf("CPUID %08x: %08x-%08x-%08x-%08x", i, a2, b2, c2, d2)
a, b, c, d = a2, b2, c2, d2
ex++
}
}
n2 := maxExtendedFunction()
for i := uint32(0x80000000); i <= n2; i++ {
a, b, c, d := cpuid(i)
t.Logf("CPUID %08x: %08x-%08x-%08x-%08x", i, a, b, c, d)
}
}
func example() {
// Print basic CPU information:
fmt.Println("Name:", cpu.brandname)
fmt.Println("PhysicalCores:", cpu.physicalcores)
fmt.Println("ThreadsPerCore:", cpu.threadspercore)
fmt.Println("LogicalCores:", cpu.logicalcores)
fmt.Println("Family", cpu.family, "Model:", cpu.model)
fmt.Println("Features:", cpu.features)
fmt.Println("Cacheline bytes:", cpu.cacheline)
// Test if we have a specific feature:
if cpu.sse() {
fmt.Println("We have Streaming SIMD Extensions")
}
}
func TestBrandNameZero(t *testing.T) {
if len(cpu.brandname) > 0 {
// Cut out last byte
last := []byte(cpu.brandname[len(cpu.brandname)-1:])
if last[0] == 0 {
t.Fatal("last byte was zero")
} else if last[0] == 32 {
t.Fatal("whitespace wasn't trimmed")
}
}
}
// Generated here: http://play.golang.org/p/mko-0tFt0Q
// TestCmov tests Cmov() function
func TestCmov(t *testing.T) {
got := cpu.cmov()
expected := cpu.features&cmov == cmov
if got != expected {
t.Fatalf("Cmov: expected %v, got %v", expected, got)
}
t.Log("CMOV Support:", got)
}
// TestAmd3dnow tests Amd3dnow() function
func TestAmd3dnow(t *testing.T) {
got := cpu.amd3dnow()
expected := cpu.features&amd3dnow == amd3dnow
if got != expected {
t.Fatalf("Amd3dnow: expected %v, got %v", expected, got)
}
t.Log("AMD3DNOW Support:", got)
}
// TestAmd3dnowExt tests Amd3dnowExt() function
func TestAmd3dnowExt(t *testing.T) {
got := cpu.amd3dnowext()
expected := cpu.features&amd3dnowext == amd3dnowext
if got != expected {
t.Fatalf("Amd3dnowExt: expected %v, got %v", expected, got)
}
t.Log("AMD3DNOWEXT Support:", got)
}
// TestMMX tests MMX() function
func TestMMX(t *testing.T) {
got := cpu.mmx()
expected := cpu.features&mmx == mmx
if got != expected {
t.Fatalf("MMX: expected %v, got %v", expected, got)
}
t.Log("MMX Support:", got)
}
// TestMMXext tests MMXext() function
func TestMMXext(t *testing.T) {
got := cpu.mmxext()
expected := cpu.features&mmxext == mmxext
if got != expected {
t.Fatalf("MMXExt: expected %v, got %v", expected, got)
}
t.Log("MMXEXT Support:", got)
}
// TestSSE tests SSE() function
func TestSSE(t *testing.T) {
got := cpu.sse()
expected := cpu.features&sse == sse
if got != expected {
t.Fatalf("SSE: expected %v, got %v", expected, got)
}
t.Log("SSE Support:", got)
}
// TestSSE2 tests SSE2() function
func TestSSE2(t *testing.T) {
got := cpu.sse2()
expected := cpu.features&sse2 == sse2
if got != expected {
t.Fatalf("SSE2: expected %v, got %v", expected, got)
}
t.Log("SSE2 Support:", got)
}
// TestSSE3 tests SSE3() function
func TestSSE3(t *testing.T) {
got := cpu.sse3()
expected := cpu.features&sse3 == sse3
if got != expected {
t.Fatalf("SSE3: expected %v, got %v", expected, got)
}
t.Log("SSE3 Support:", got)
}
// TestSSSE3 tests SSSE3() function
func TestSSSE3(t *testing.T) {
got := cpu.ssse3()
expected := cpu.features&ssse3 == ssse3
if got != expected {
t.Fatalf("SSSE3: expected %v, got %v", expected, got)
}
t.Log("SSSE3 Support:", got)
}
// TestSSE4 tests SSE4() function
func TestSSE4(t *testing.T) {
got := cpu.sse4()
expected := cpu.features&sse4 == sse4
if got != expected {
t.Fatalf("SSE4: expected %v, got %v", expected, got)
}
t.Log("SSE4 Support:", got)
}
// TestSSE42 tests SSE42() function
func TestSSE42(t *testing.T) {
got := cpu.sse42()
expected := cpu.features&sse42 == sse42
if got != expected {
t.Fatalf("SSE42: expected %v, got %v", expected, got)
}
t.Log("SSE42 Support:", got)
}
// TestAVX tests AVX() function
func TestAVX(t *testing.T) {
got := cpu.avx()
expected := cpu.features&avx == avx
if got != expected {
t.Fatalf("AVX: expected %v, got %v", expected, got)
}
t.Log("AVX Support:", got)
}
// TestAVX2 tests AVX2() function
func TestAVX2(t *testing.T) {
got := cpu.avx2()
expected := cpu.features&avx2 == avx2
if got != expected {
t.Fatalf("AVX2: expected %v, got %v", expected, got)
}
t.Log("AVX2 Support:", got)
}
// TestFMA3 tests FMA3() function
func TestFMA3(t *testing.T) {
got := cpu.fma3()
expected := cpu.features&fma3 == fma3
if got != expected {
t.Fatalf("FMA3: expected %v, got %v", expected, got)
}
t.Log("FMA3 Support:", got)
}
// TestFMA4 tests FMA4() function
func TestFMA4(t *testing.T) {
got := cpu.fma4()
expected := cpu.features&fma4 == fma4
if got != expected {
t.Fatalf("FMA4: expected %v, got %v", expected, got)
}
t.Log("FMA4 Support:", got)
}
// TestXOP tests XOP() function
func TestXOP(t *testing.T) {
got := cpu.xop()
expected := cpu.features&xop == xop
if got != expected {
t.Fatalf("XOP: expected %v, got %v", expected, got)
}
t.Log("XOP Support:", got)
}
// TestF16C tests F16C() function
func TestF16C(t *testing.T) {
got := cpu.f16c()
expected := cpu.features&f16c == f16c
if got != expected {
t.Fatalf("F16C: expected %v, got %v", expected, got)
}
t.Log("F16C Support:", got)
}
// TestCX16 tests CX16() function
func TestCX16(t *testing.T) {
got := cpu.cx16()
expected := cpu.features&cx16 == cx16
if got != expected {
t.Fatalf("CX16: expected %v, got %v", expected, got)
}
t.Log("CX16 Support:", got)
}
// TestSGX tests SGX() function
func TestSGX(t *testing.T) {
got := cpu.sgx.available
expected := cpu.features&sgx == sgx
if got != expected {
t.Fatalf("SGX: expected %v, got %v", expected, got)
}
t.Log("SGX Support:", got)
}
// TestBMI1 tests BMI1() function
func TestBMI1(t *testing.T) {
got := cpu.bmi1()
expected := cpu.features&bmi1 == bmi1
if got != expected {
t.Fatalf("BMI1: expected %v, got %v", expected, got)
}
t.Log("BMI1 Support:", got)
}
// TestBMI2 tests BMI2() function
func TestBMI2(t *testing.T) {
got := cpu.bmi2()
expected := cpu.features&bmi2 == bmi2
if got != expected {
t.Fatalf("BMI2: expected %v, got %v", expected, got)
}
t.Log("BMI2 Support:", got)
}
// TestTBM tests TBM() function
func TestTBM(t *testing.T) {
got := cpu.tbm()
expected := cpu.features&tbm == tbm
if got != expected {
t.Fatalf("TBM: expected %v, got %v", expected, got)
}
t.Log("TBM Support:", got)
}
// TestLzcnt tests Lzcnt() function
func TestLzcnt(t *testing.T) {
got := cpu.lzcnt()
expected := cpu.features&lzcnt == lzcnt
if got != expected {
t.Fatalf("Lzcnt: expected %v, got %v", expected, got)
}
t.Log("LZCNT Support:", got)
}
// TestLzcnt tests Lzcnt() function
func TestPopcnt(t *testing.T) {
got := cpu.popcnt()
expected := cpu.features&popcnt == popcnt
if got != expected {
t.Fatalf("Popcnt: expected %v, got %v", expected, got)
}
t.Log("POPCNT Support:", got)
}
// TestAesNi tests AesNi() function
func TestAesNi(t *testing.T) {
got := cpu.aesni()
expected := cpu.features&aesni == aesni
if got != expected {
t.Fatalf("AesNi: expected %v, got %v", expected, got)
}
t.Log("AESNI Support:", got)
}
// TestHTT tests HTT() function
func TestHTT(t *testing.T) {
got := cpu.htt()
expected := cpu.features&htt == htt
if got != expected {
t.Fatalf("HTT: expected %v, got %v", expected, got)
}
t.Log("HTT Support:", got)
}
// TestClmul tests Clmul() function
func TestClmul(t *testing.T) {
got := cpu.clmul()
expected := cpu.features&clmul == clmul
if got != expected {
t.Fatalf("Clmul: expected %v, got %v", expected, got)
}
t.Log("CLMUL Support:", got)
}
// TestSSE2Slow tests SSE2Slow() function
func TestSSE2Slow(t *testing.T) {
got := cpu.sse2slow()
expected := cpu.features&sse2slow == sse2slow
if got != expected {
t.Fatalf("SSE2Slow: expected %v, got %v", expected, got)
}
t.Log("SSE2SLOW Support:", got)
}
// TestSSE3Slow tests SSE3slow() function
func TestSSE3Slow(t *testing.T) {
got := cpu.sse3slow()
expected := cpu.features&sse3slow == sse3slow
if got != expected {
t.Fatalf("SSE3slow: expected %v, got %v", expected, got)
}
t.Log("SSE3SLOW Support:", got)
}
// TestAtom tests Atom() function
func TestAtom(t *testing.T) {
got := cpu.atom()
expected := cpu.features&atom == atom
if got != expected {
t.Fatalf("Atom: expected %v, got %v", expected, got)
}
t.Log("ATOM Support:", got)
}
// TestNX tests NX() function (NX (No-Execute) bit)
func TestNX(t *testing.T) {
got := cpu.nx()
expected := cpu.features&nx == nx
if got != expected {
t.Fatalf("NX: expected %v, got %v", expected, got)
}
t.Log("NX Support:", got)
}
// TestSSE4A tests SSE4A() function (AMD Barcelona microarchitecture SSE4a instructions)
func TestSSE4A(t *testing.T) {
got := cpu.sse4a()
expected := cpu.features&sse4a == sse4a
if got != expected {
t.Fatalf("SSE4A: expected %v, got %v", expected, got)
}
t.Log("SSE4A Support:", got)
}
// TestHLE tests HLE() function (Hardware Lock Elision)
func TestHLE(t *testing.T) {
got := cpu.hle()
expected := cpu.features&hle == hle
if got != expected {
t.Fatalf("HLE: expected %v, got %v", expected, got)
}
t.Log("HLE Support:", got)
}
// TestRTM tests RTM() function (Restricted Transactional Memory)
func TestRTM(t *testing.T) {
got := cpu.rtm()
expected := cpu.features&rtm == rtm
if got != expected {
t.Fatalf("RTM: expected %v, got %v", expected, got)
}
t.Log("RTM Support:", got)
}
// TestRdrand tests RDRAND() function (RDRAND instruction is available)
func TestRdrand(t *testing.T) {
got := cpu.rdrand()
expected := cpu.features&rdrand == rdrand
if got != expected {
t.Fatalf("Rdrand: expected %v, got %v", expected, got)
}
t.Log("Rdrand Support:", got)
}
// TestRdseed tests RDSEED() function (RDSEED instruction is available)
func TestRdseed(t *testing.T) {
got := cpu.rdseed()
expected := cpu.features&rdseed == rdseed
if got != expected {
t.Fatalf("Rdseed: expected %v, got %v", expected, got)
}
t.Log("Rdseed Support:", got)
}
// TestADX tests ADX() function (Intel ADX (Multi-Precision Add-Carry Instruction Extensions))
func TestADX(t *testing.T) {
got := cpu.adx()
expected := cpu.features&adx == adx
if got != expected {
t.Fatalf("ADX: expected %v, got %v", expected, got)
}
t.Log("ADX Support:", got)
}
// TestSHA tests SHA() function (Intel SHA Extensions)
func TestSHA(t *testing.T) {
got := cpu.sha()
expected := cpu.features&sha == sha
if got != expected {
t.Fatalf("SHA: expected %v, got %v", expected, got)
}
t.Log("SHA Support:", got)
}
// TestAVX512F tests AVX512F() function (AVX-512 Foundation)
func TestAVX512F(t *testing.T) {
got := cpu.avx512f()
expected := cpu.features&avx512f == avx512f
if got != expected {
t.Fatalf("AVX512F: expected %v, got %v", expected, got)
}
t.Log("AVX512F Support:", got)
}
// TestAVX512DQ tests AVX512DQ() function (AVX-512 Doubleword and Quadword Instructions)
func TestAVX512DQ(t *testing.T) {
got := cpu.avx512dq()
expected := cpu.features&avx512dq == avx512dq
if got != expected {
t.Fatalf("AVX512DQ: expected %v, got %v", expected, got)
}
t.Log("AVX512DQ Support:", got)
}
// TestAVX512IFMA tests AVX512IFMA() function (AVX-512 Integer Fused Multiply-Add Instructions)
func TestAVX512IFMA(t *testing.T) {
got := cpu.avx512ifma()
expected := cpu.features&avx512ifma == avx512ifma
if got != expected {
t.Fatalf("AVX512IFMA: expected %v, got %v", expected, got)
}
t.Log("AVX512IFMA Support:", got)
}
// TestAVX512PF tests AVX512PF() function (AVX-512 Prefetch Instructions)
func TestAVX512PF(t *testing.T) {
got := cpu.avx512pf()
expected := cpu.features&avx512pf == avx512pf
if got != expected {
t.Fatalf("AVX512PF: expected %v, got %v", expected, got)
}
t.Log("AVX512PF Support:", got)
}
// TestAVX512ER tests AVX512ER() function (AVX-512 Exponential and Reciprocal Instructions)
func TestAVX512ER(t *testing.T) {
got := cpu.avx512er()
expected := cpu.features&avx512er == avx512er
if got != expected {
t.Fatalf("AVX512ER: expected %v, got %v", expected, got)
}
t.Log("AVX512ER Support:", got)
}
// TestAVX512CD tests AVX512CD() function (AVX-512 Conflict Detection Instructions)
func TestAVX512CD(t *testing.T) {
got := cpu.avx512cd()
expected := cpu.features&avx512cd == avx512cd
if got != expected {
t.Fatalf("AVX512CD: expected %v, got %v", expected, got)
}
t.Log("AVX512CD Support:", got)
}
// TestAVX512BW tests AVX512BW() function (AVX-512 Byte and Word Instructions)
func TestAVX512BW(t *testing.T) {
got := cpu.avx512bw()
expected := cpu.features&avx512bw == avx512bw
if got != expected {
t.Fatalf("AVX512BW: expected %v, got %v", expected, got)
}
t.Log("AVX512BW Support:", got)
}
// TestAVX512VL tests AVX512VL() function (AVX-512 Vector Length Extensions)
func TestAVX512VL(t *testing.T) {
got := cpu.avx512vl()
expected := cpu.features&avx512vl == avx512vl
if got != expected {
t.Fatalf("AVX512VL: expected %v, got %v", expected, got)
}
t.Log("AVX512VL Support:", got)
}
// TestAVX512VL tests AVX512VBMI() function (AVX-512 Vector Bit Manipulation Instructions)
func TestAVX512VBMI(t *testing.T) {
got := cpu.avx512vbmi()
expected := cpu.features&avx512vbmi == avx512vbmi
if got != expected {
t.Fatalf("AVX512VBMI: expected %v, got %v", expected, got)
}
t.Log("AVX512VBMI Support:", got)
}
// TestMPX tests MPX() function (Intel MPX (Memory Protection Extensions))
func TestMPX(t *testing.T) {
got := cpu.mpx()
expected := cpu.features&mpx == mpx
if got != expected {
t.Fatalf("MPX: expected %v, got %v", expected, got)
}
t.Log("MPX Support:", got)
}
// TestERMS tests ERMS() function (Enhanced REP MOVSB/STOSB)
func TestERMS(t *testing.T) {
got := cpu.erms()
expected := cpu.features&erms == erms
if got != expected {
t.Fatalf("ERMS: expected %v, got %v", expected, got)
}
t.Log("ERMS Support:", got)
}
// TestVendor writes the detected vendor. Will be 0 if unknown
func TestVendor(t *testing.T) {
t.Log("Vendor ID:", cpu.vendorid)
}
// Intel returns true if vendor is recognized as Intel
func TestIntel(t *testing.T) {
got := cpu.intel()
expected := cpu.vendorid == intel
if got != expected {
t.Fatalf("TestIntel: expected %v, got %v", expected, got)
}
t.Log("TestIntel:", got)
}
// AMD returns true if vendor is recognized as AMD
func TestAMD(t *testing.T) {
got := cpu.amd()
expected := cpu.vendorid == amd
if got != expected {
t.Fatalf("TestAMD: expected %v, got %v", expected, got)
}
t.Log("TestAMD:", got)
}
// Transmeta returns true if vendor is recognized as Transmeta
func TestTransmeta(t *testing.T) {
got := cpu.transmeta()
expected := cpu.vendorid == transmeta
if got != expected {
t.Fatalf("TestTransmeta: expected %v, got %v", expected, got)
}
t.Log("TestTransmeta:", got)
}
// NSC returns true if vendor is recognized as National Semiconductor
func TestNSC(t *testing.T) {
got := cpu.nsc()
expected := cpu.vendorid == nsc
if got != expected {
t.Fatalf("TestNSC: expected %v, got %v", expected, got)
}
t.Log("TestNSC:", got)
}
// VIA returns true if vendor is recognized as VIA
func TestVIA(t *testing.T) {
got := cpu.via()
expected := cpu.vendorid == via
if got != expected {
t.Fatalf("TestVIA: expected %v, got %v", expected, got)
}
t.Log("TestVIA:", got)
}
// Test VM function
func TestVM(t *testing.T) {
t.Log("Vendor ID:", cpu.vm())
}
// NSC returns true if vendor is recognized as National Semiconductor
func TestCPUInfo_TSX(t *testing.T) {
got := cpu.tsx()
expected := cpu.hle() && cpu.rtm()
if got != expected {
t.Fatalf("TestNSC: expected %v, got %v", expected, got)
}
t.Log("TestNSC:", got)
}
// Test RTCounter function
func TestRtCounter(t *testing.T) {
a := cpu.rtcounter()
b := cpu.rtcounter()
t.Log("CPU Counter:", a, b, b-a)
}
// Prints the value of Ia32TscAux()
func TestIa32TscAux(t *testing.T) {
ecx := cpu.ia32tscaux()
t.Logf("Ia32TscAux:0x%x\n", ecx)
if ecx != 0 {
chip := (ecx & 0xFFF000) >> 12
core := ecx & 0xFFF
t.Log("Likely chip, core:", chip, core)
}
}
func TestThreadsPerCoreNZ(t *testing.T) {
if cpu.threadspercore == 0 {
t.Fatal("threads per core is zero")
}
}
// Prints the value of LogicalCPU()
func TestLogicalCPU(t *testing.T) {
t.Log("Currently executing on cpu:", cpu.logicalcpu())
}
func TestMaxFunction(t *testing.T) {
expect := maxFunctionID()
if cpu.maxFunc != expect {
t.Fatal("Max function does not match, expected", expect, "but got", cpu.maxFunc)
}
expect = maxExtendedFunction()
if cpu.maxExFunc != expect {
t.Fatal("Max Extended function does not match, expected", expect, "but got", cpu.maxFunc)
}
}
// This example will calculate the chip/core number on Linux
// Linux encodes numa id (<<12) and core id (8bit) into TSC_AUX.
func examplecpuinfo_ia32tscaux() {
ecx := cpu.ia32tscaux()
if ecx == 0 {
fmt.Println("Unknown CPU ID")
return
}
chip := (ecx & 0xFFF000) >> 12
core := ecx & 0xFFF
fmt.Println("Chip, Core:", chip, core)
}
/*
func TestPhysical(t *testing.T) {
var test16 = "CPUID 00000000: 0000000d-756e6547-6c65746e-49656e69 \nCPUID 00000001: 000206d7-03200800-1fbee3ff-bfebfbff \nCPUID 00000002: 76035a01-00f0b2ff-00000000-00ca0000 \nCPUID 00000003: 00000000-00000000-00000000-00000000 \nCPUID 00000004: 3c004121-01c0003f-0000003f-00000000 \nCPUID 00000004: 3c004122-01c0003f-0000003f-00000000 \nCPUID 00000004: 3c004143-01c0003f-000001ff-00000000 \nCPUID 00000004: 3c07c163-04c0003f-00003fff-00000006 \nCPUID 00000005: 00000040-00000040-00000003-00021120 \nCPUID 00000006: 00000075-00000002-00000009-00000000 \nCPUID 00000007: 00000000-00000000-00000000-00000000 \nCPUID 00000008: 00000000-00000000-00000000-00000000 \nCPUID 00000009: 00000001-00000000-00000000-00000000 \nCPUID 0000000a: 07300403-00000000-00000000-00000603 \nCPUID 0000000b: 00000000-00000000-00000003-00000003 \nCPUID 0000000b: 00000005-00000010-00000201-00000003 \nCPUID 0000000c: 00000000-00000000-00000000-00000000 \nCPUID 0000000d: 00000007-00000340-00000340-00000000 \nCPUID 0000000d: 00000001-00000000-00000000-00000000 \nCPUID 0000000d: 00000100-00000240-00000000-00000000 \nCPUID 80000000: 80000008-00000000-00000000-00000000 \nCPUID 80000001: 00000000-00000000-00000001-2c100800 \nCPUID 80000002: 20202020-49202020-6c65746e-20295228 \nCPUID 80000003: 6e6f6558-20295228-20555043-322d3545 \nCPUID 80000004: 20303636-20402030-30322e32-007a4847 \nCPUID 80000005: 00000000-00000000-00000000-00000000 \nCPUID 80000006: 00000000-00000000-01006040-00000000 \nCPUID 80000007: 00000000-00000000-00000000-00000100 \nCPUID 80000008: 0000302e-00000000-00000000-00000000"
restore := mockCPU([]byte(test16))
Detect()
t.Log("Name:", CPU.BrandName)
n := maxFunctionID()
t.Logf("Max Function:0x%x\n", n)
n = maxExtendedFunction()
t.Logf("Max Extended Function:0x%x\n", n)
t.Log("PhysicalCores:", CPU.PhysicalCores)
t.Log("ThreadsPerCore:", CPU.ThreadsPerCore)
t.Log("LogicalCores:", CPU.LogicalCores)
t.Log("Family", CPU.Family, "Model:", CPU.Model)
t.Log("Features:", CPU.Features)
t.Log("Cacheline bytes:", CPU.CacheLine)
t.Log("L1 Instruction Cache:", CPU.Cache.L1I, "bytes")
t.Log("L1 Data Cache:", CPU.Cache.L1D, "bytes")
t.Log("L2 Cache:", CPU.Cache.L2, "bytes")
t.Log("L3 Cache:", CPU.Cache.L3, "bytes")
if CPU.LogicalCores > 0 && CPU.PhysicalCores > 0 {
if CPU.LogicalCores != CPU.PhysicalCores*CPU.ThreadsPerCore {
t.Fatalf("Core count mismatch, LogicalCores (%d) != PhysicalCores (%d) * CPU.ThreadsPerCore (%d)",
CPU.LogicalCores, CPU.PhysicalCores, CPU.ThreadsPerCore)
}
}
if CPU.ThreadsPerCore > 1 && !CPU.HTT() {
t.Fatalf("Hyperthreading not detected")
}
if CPU.ThreadsPerCore == 1 && CPU.HTT() {
t.Fatalf("Hyperthreading detected, but only 1 Thread per core")
}
restore()
Detect()
TestCPUID(t)
}
*/

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vendor/github.com/klauspost/cpuid/testdata/cpuid_data.zip generated vendored Normal file
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vendor/github.com/klauspost/cpuid/testdata/getall.go generated vendored Normal file
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package main
import (
"archive/zip"
_ "bytes"
"fmt"
"golang.org/x/net/html"
"io"
"net/http"
"os"
"strings"
)
// Download all CPUID dumps from http://users.atw.hu/instlatx64/
func main() {
resp, err := http.Get("http://users.atw.hu/instlatx64/?")
if err != nil {
panic(err)
}
node, err := html.Parse(resp.Body)
if err != nil {
panic(err)
}
file, err := os.Create("cpuid_data.zip")
if err != nil {
panic(err)
}
defer file.Close()
gw := zip.NewWriter(file)
var f func(*html.Node)
f = func(n *html.Node) {
if n.Type == html.ElementNode && n.Data == "a" {
for _, a := range n.Attr {
if a.Key == "href" {
err := ParseURL(a.Val, gw)
if err != nil {
panic(err)
}
break
}
}
}
for c := n.FirstChild; c != nil; c = c.NextSibling {
f(c)
}
}
f(node)
err = gw.Close()
if err != nil {
panic(err)
}
}
func ParseURL(s string, gw *zip.Writer) error {
if strings.Contains(s, "CPUID.txt") {
fmt.Println("Adding", "http://users.atw.hu/instlatx64/"+s)
resp, err := http.Get("http://users.atw.hu/instlatx64/" + s)
if err != nil {
fmt.Println("Error getting ", s, ":", err)
}
defer resp.Body.Close()
w, err := gw.Create(s)
if err != nil {
return err
}
_, err = io.Copy(w, resp.Body)
if err != nil {
return err
}
}
return nil
}