package sys

import "runtime/internal/sys"

package sys contains system- and configuration- and architecture-specific constants used by the runtime.

Index ¶

• Constants
• func Bswap32(x uint32) uint32
• func Bswap64(x uint64) uint64
• func Ctz32(x uint32) int
• func Ctz64(x uint64) int
• type ArchFamilyType

Constants ¶

const DefaultGoroot = `/usr/local/go`

const Goexperiment = ``

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 // SP alignment: 1 normally, 16 for ARM64

const StackGuardMultiplier = 1

const TheVersion = `go1.9rc2`

Functions ¶

func Bswap32 ¶

func Bswap32(x uint32) uint32

Bswap32 returns its input with byte order reversed 0x01020304 -> 0x04030201

func Bswap64 ¶

func Bswap64(x uint64) uint64

Bswap64 returns its input with byte order reversed 0x0102030405060708 -> 0x0807060504030201

func Ctz32 ¶

func Ctz32(x uint32) int

Ctz32 counts trailing (low-order) zeroes, and if all are zero, then 32.

func Ctz64 ¶

func Ctz64(x uint64) int

Ctz64 counts trailing (low-order) zeroes, and if all are zero, then 64.

Types ¶

type ArchFamilyType ¶

type ArchFamilyType int

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

Source Files ¶

arch.go intrinsics.go stubs.go sys.go zversion.go