package goarch

import "internal/goarch"

package goarch contains GOARCH-specific constants.

Index

• Constants
• type ArchFamilyType

Constants

const BigEndian = IsArmbe|IsArm64be|IsMips|IsMips64|IsPpc|IsPpc64|IsS390|IsS390x|IsSparc|IsSparc64 == 1

BigEndian reports whether the architecture is big-endian.

const DefaultPhysPageSize = _DefaultPhysPageSize

DefaultPhysPageSize is the default physical page size.

const GOARCH = `amd64`

const Int64Align = PtrSize

Int64Align is the required alignment for a 64-bit integer (4 on 32-bit systems, 8 on 64-bit).

const Is386 = 0

const IsAmd64 = 1

const IsAmd64p32 = 0

const IsArm = 0

const IsArm64 = 0

const IsArm64be = 0

const IsArmbe = 0

const IsLoong64 = 0

const IsMips = 0

const IsMips64 = 0

const IsMips64le = 0

const IsMips64p32 = 0

const IsMips64p32le = 0

const IsMipsle = 0

const IsPpc = 0

const IsPpc64 = 0

const IsPpc64le = 0

const IsRiscv = 0

const IsRiscv64 = 0

const IsS390 = 0

const IsS390x = 0

const IsSparc = 0

const IsSparc64 = 0

const IsWasm = 0

const MinFrameSize = _MinFrameSize

MinFrameSize is the size of the system-reserved words at the bottom of a frame (just above the architectural stack pointer). It is zero on x86 and PtrSize on most non-x86 (LR-based) systems. On PowerPC it is larger, to cover three more reserved words: the compiler word, the link editor word, and the TOC save word.

const PCQuantum = _PCQuantum

PCQuantum is the minimal unit for a program counter (1 on x86, 4 on most other systems). The various PC tables record PC deltas pre-divided by PCQuantum.

const PtrSize = 4 << (^uintptr(0) >> 63)

PtrSize is the size of a pointer in bytes - unsafe.Sizeof(uintptr(0)) but as an ideal constant. It is also the size of the machine's native word size (that is, 4 on 32-bit systems, 8 on 64-bit).

const StackAlign = _StackAlign

StackAlign is the required alignment of the SP register. The stack must be at least word aligned, but some architectures require more.

Types

type ArchFamilyType

type ArchFamilyType int

ArchFamilyType represents a family of one or more related architectures. For example, ppc64 and ppc64le are both members of the PPC64 family.

const (
	AMD64 ArchFamilyType = iota
	ARM
	ARM64
	I386
	LOONG64
	MIPS
	MIPS64
	PPC64
	RISCV64
	S390X
	WASM
)

const ArchFamily ArchFamilyType = _ArchFamily

ArchFamily is the architecture family (AMD64, ARM, ...)