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  • import "runtime/internal/sys"

  • 概況

  • 索引

概況

包 sys 包含運(yùn)行時(shí)使用的系統(tǒng)和配置以及特定于體系結(jié)構(gòu)的常量。

索引

  • 常量

  • func Bswap32(x uint32) uint32

  • func Bswap64(x uint64) uint64

  • func Ctz32(x uint32) int

  • func Ctz64(x uint64) int

  • type ArchFamilyType

  • type Uintreg

包文件

arch.go arch_amd64.go intrinsics.go stubs.go sys.go zgoarch_amd64.go zgoos_linux.go

常量

const (
        ArchFamily          = AMD64
        BigEndian           = 0
        CacheLineSize       = 64
        DefaultPhysPageSize = 4096
        PCQuantum           = 1
        Int64Align          = 8
        HugePageSize        = 1 << 21
        MinFrameSize        = 0)
const GOARCH = `amd64`
const GOOS = `linux`
const Goarch386 = 0
const GoarchAmd64 = 1
const GoarchAmd64p32 = 0
const GoarchArm = 0
const GoarchArm64 = 0
const GoarchArm64be = 0
const GoarchArmbe = 0
const GoarchMips = 0
const GoarchMips64 = 0
const GoarchMips64le = 0
const GoarchMips64p32 = 0
const GoarchMips64p32le = 0
const GoarchMipsle = 0
const GoarchPpc = 0
const GoarchPpc64 = 0
const GoarchPpc64le = 0
const GoarchS390 = 0
const GoarchS390x = 0
const GoarchSparc = 0
const GoarchSparc64 = 0
const GoosAndroid = 0
const GoosDarwin = 0
const GoosDragonfly = 0
const GoosFreebsd = 0
const GoosLinux = 1
const GoosNacl = 0
const GoosNetbsd = 0
const GoosOpenbsd = 0
const GoosPlan9 = 0
const GoosSolaris = 0
const GoosWindows = 0
const PtrSize = 4 << (^uintptr(0) >> 63) // unsafe.Sizeof(uintptr(0)) but an ideal const
const RegSize = 4 << (^Uintreg(0) >> 63) // unsafe.Sizeof(uintreg(0)) but an ideal const
const SpAlign = 1*(1-GoarchArm64) + 16*GoarchArm64

func Bswap32

func Bswap32(x uint32) uint32

Bswap32 返回其輸入字節(jié)順序顛倒 0x01020304  - > 0x04030201

func Bswap64

func Bswap64(x uint64) uint64

Bswap64 返回其輸入字節(jié)順序顛倒 0x0102030405060708  - > 0x0807060504030201

func Ctz32

func Ctz32(x uint32) int

Ctz32 計(jì)算結(jié)尾(低位)零,如果全都為零,則為32。

func Ctz64

func Ctz64(x uint64) int

Ctz64 計(jì)算結(jié)尾(低位)零,如果全部為零,則計(jì)數(shù)為64。

type ArchFamilyType

type ArchFamilyType int
const (
        AMD64 ArchFamilyType = iota
        ARM
        ARM64
        I386
        MIPS
        MIPS64
        PPC64
        S390X)

type Uintreg

type Uintreg uint64
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