package sys

Import Path
	runtime/internal/sys (on go.dev)

Dependency Relation
	imports 0 packages, and imported by 2 packages


Involved Source Files

	      arch.go
	      arch_amd64.go
	      intrinsics.go
	      intrinsics_common.go
	      stubs.go
	
		package sys contains system- and configuration- and architecture-specific
		constants used by the runtime.

	      zgoarch_amd64.go
	      zgoos_darwin.go
	      zversion.go


Package-Level Type Names (total 2, both are exported)


	/* sort exporteds by:  |  */
	

		
			const AMD64
			const ArchFamily
			const ARM
			const ARM64
			const I386
			const MIPS
			const MIPS64
			const PPC64
			const RISCV64
			const S390X
			const WASM


	 type Uintreg uint64 (basic type)


Package-Level Functions (total 12, all are exported)


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


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


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


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


	
		Ctz8 returns the number of trailing zero bits in x; the result is 8 for x == 0.


	
		LeadingZeros64 returns the number of leading zero bits in x; the result is 64 for x == 0.


	
		LeadingZeros8 returns the number of leading zero bits in x; the result is 8 for x == 0.


	
		len64 returns the minimum number of bits required to represent x; the result is 0 for x == 0.


	
		Len8 returns the minimum number of bits required to represent x; the result is 0 for x == 0.


	
		OnesCount64 returns the number of one bits ("population count") in x.


	
		TrailingZeros64 returns the number of trailing zero bits in x; the result is 64 for x == 0.


	
		TrailingZeros8 returns the number of trailing zero bits in x; the result is 8 for x == 0.




Package-Level Variables (total 6, in which 1 are exported)


	  var DefaultGoroot string // set at link time
	


Package-Level Constants (total 71, in which 65 are exported)


	const ARM ArchFamilyType = 1
	const BigEndian = false
	const DefaultPhysPageSize = 4096
	const GOARCH = "amd64"
	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 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 = 0
	const Goexperiment = ""
	const GOOS = "darwin"
	const GoosAix = 0
	const GoosAndroid = 0
	const GoosDarwin = 1
	const GoosDragonfly = 0
	const GoosFreebsd = 0
	const GoosHurd = 0
	const GoosIllumos = 0
	const GoosIos = 0
	const GoosJs = 0
	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 I386 ArchFamilyType = 3
	const Int64Align = 8
	const MinFrameSize = 0
	const MIPS ArchFamilyType = 4
	const PCQuantum = 1
	const PtrSize = 8 // unsafe.Sizeof(uintptr(0)) but an ideal const
	const RegSize = 8 // unsafe.Sizeof(uintreg(0)) but an ideal const
	const SpAlign = 1 // SP alignment: 1 normally, 16 for ARM64
	
		AIX requires a larger stack for syscalls.


	const TheVersion = "go1.16.5"
	const WASM ArchFamilyType = 9