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import "runtime/internal/sys"
概况
索引
包 sys 包含运行时使用的系统和配置以及特定于体系结构的常量。
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
arch.go arch_amd64.go intrinsics.go stubs.go sys.go zgoarch_amd64.go zgoos_linux.go
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(x uint32) uint32
Bswap32 返回其输入字节顺序颠倒 0x01020304 - > 0x04030201
func Bswap64(x uint64) uint64
Bswap64 返回其输入字节顺序颠倒 0x0102030405060708 - > 0x0807060504030201
func Ctz32(x uint32) int
Ctz32 计算结尾(低位)零,如果全都为零,则为32。
func Ctz64(x uint64) int
Ctz64 计算结尾(低位)零,如果全部为零,则计数为64。
type ArchFamilyType int
const ( AMD64 ArchFamilyType = iota ARM ARM64 I386 MIPS MIPS64 PPC64 S390X)
type Uintreg uint64