package sys
import "runtime/internal/sys"
package sys contains system- and configuration- and architecture-specific constants used by the runtime.
Index ¶
- Constants
- Variables
- func Bswap32(x uint32) uint32
- func Bswap64(x uint64) uint64
- func Ctz32(x uint32) int
- func Ctz64(x uint64) int
- func Ctz8(x uint8) int
- func LeadingZeros64(x uint64) int
- func LeadingZeros8(x uint8) int
- func Len64(x uint64) (n int)
- func Len8(x uint8) int
- func OnesCount64(x uint64) int
- func TrailingZeros64(x uint64) int
- func TrailingZeros8(x uint8) int
- type ArchFamilyType
- type Uintreg
Constants ¶
const ( ArchFamily = WASM BigEndian = false DefaultPhysPageSize = 65536 PCQuantum = 1 Int64Align = 8 MinFrameSize = 0 )
const GOARCH = `wasm`
const GOOS = `js`
const Goarch386 = 0
const GoarchAmd64 = 0
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 GoarchRiscv = 0
const GoarchRiscv64 = 0
const GoarchS390 = 0
const GoarchS390x = 0
const GoarchSparc = 0
const GoarchSparc64 = 0
const GoarchWasm = 1
const Goexperiment = ``
const GoosAix = 0
const GoosAndroid = 0
const GoosDarwin = 0
const GoosDragonfly = 0
const GoosFreebsd = 0
const GoosHurd = 0
const GoosIllumos = 0
const GoosJs = 1
const GoosLinux = 0
const GoosNacl = 0
const GoosNetbsd = 0
const GoosOpenbsd = 0
const GoosPlan9 = 0
const GoosSolaris = 0
const GoosWindows = 0
const GoosZos = 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 // SP alignment: 1 normally, 16 for ARM64
const StackGuardMultiplier = StackGuardMultiplierDefault*(1-GoosAix) + 2*GoosAix
AIX requires a larger stack for syscalls.
const StackGuardMultiplierDefault = 1
const TheVersion = `go1.14`
Variables ¶
var DefaultGoroot string // set at link time
Functions ¶
func Bswap32 ¶
Bswap32 returns its input with byte order reversed 0x01020304 -> 0x04030201
func Bswap64 ¶
Bswap64 returns its input with byte order reversed 0x0102030405060708 -> 0x0807060504030201
func Ctz32 ¶
Ctz32 counts trailing (low-order) zeroes, and if all are zero, then 32.
func Ctz64 ¶
Ctz64 counts trailing (low-order) zeroes, and if all are zero, then 64.
func Ctz8 ¶
Ctz8 returns the number of trailing zero bits in x; the result is 8 for x == 0.
func LeadingZeros64 ¶
LeadingZeros64 returns the number of leading zero bits in x; the result is 64 for x == 0.
func LeadingZeros8 ¶
LeadingZeros8 returns the number of leading zero bits in x; the result is 8 for x == 0.
func Len64 ¶
len64 returns the minimum number of bits required to represent x; the result is 0 for x == 0.
func Len8 ¶
Len8 returns the minimum number of bits required to represent x; the result is 0 for x == 0.
func OnesCount64 ¶
OnesCount64 returns the number of one bits ("population count") in x.
func TrailingZeros64 ¶
TrailingZeros64 returns the number of trailing zero bits in x; the result is 64 for x == 0.
func TrailingZeros8 ¶
TrailingZeros8 returns the number of trailing zero bits in x; the result is 8 for x == 0.
Types ¶
type ArchFamilyType ¶
type ArchFamilyType int
const ( AMD64 ArchFamilyType = iota ARM ARM64 I386 MIPS MIPS64 PPC64 RISCV64 S390X WASM )
type Uintreg ¶
type Uintreg uint64
Source Files ¶
arch.go arch_wasm.go intrinsics.go intrinsics_common.go stubs.go sys.go zgoarch_wasm.go zgoos_js.go zversion.go
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