sys

package standard library
go1.17.12 Latest Latest
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Published: Jul 12, 2022 License: BSD-3-Clause Imports: 1 Imported by: 0

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Index

Constants

This section is empty.

Variables

View Source
var Arch386 = &Arch{
	Name:      "386",
	Family:    I386,
	ByteOrder: binary.LittleEndian,
	PtrSize:   4,
	RegSize:   4,
	MinLC:     1,
	Alignment: 1,
}
View Source
var ArchAMD64 = &Arch{
	Name:      "amd64",
	Family:    AMD64,
	ByteOrder: binary.LittleEndian,
	PtrSize:   8,
	RegSize:   8,
	MinLC:     1,
	Alignment: 1,
}
View Source
var ArchARM = &Arch{
	Name:      "arm",
	Family:    ARM,
	ByteOrder: binary.LittleEndian,
	PtrSize:   4,
	RegSize:   4,
	MinLC:     4,
	Alignment: 4,
}
View Source
var ArchARM64 = &Arch{
	Name:      "arm64",
	Family:    ARM64,
	ByteOrder: binary.LittleEndian,
	PtrSize:   8,
	RegSize:   8,
	MinLC:     4,
	Alignment: 1,
}
View Source
var ArchMIPS = &Arch{
	Name:      "mips",
	Family:    MIPS,
	ByteOrder: binary.BigEndian,
	PtrSize:   4,
	RegSize:   4,
	MinLC:     4,
	Alignment: 4,
}
View Source
var ArchMIPS64 = &Arch{
	Name:      "mips64",
	Family:    MIPS64,
	ByteOrder: binary.BigEndian,
	PtrSize:   8,
	RegSize:   8,
	MinLC:     4,
	Alignment: 8,
}
View Source
var ArchMIPS64LE = &Arch{
	Name:      "mips64le",
	Family:    MIPS64,
	ByteOrder: binary.LittleEndian,
	PtrSize:   8,
	RegSize:   8,
	MinLC:     4,
	Alignment: 8,
}
View Source
var ArchMIPSLE = &Arch{
	Name:      "mipsle",
	Family:    MIPS,
	ByteOrder: binary.LittleEndian,
	PtrSize:   4,
	RegSize:   4,
	MinLC:     4,
	Alignment: 4,
}
View Source
var ArchPPC64 = &Arch{
	Name:      "ppc64",
	Family:    PPC64,
	ByteOrder: binary.BigEndian,
	PtrSize:   8,
	RegSize:   8,
	MinLC:     4,
	Alignment: 1,
}
View Source
var ArchPPC64LE = &Arch{
	Name:      "ppc64le",
	Family:    PPC64,
	ByteOrder: binary.LittleEndian,
	PtrSize:   8,
	RegSize:   8,
	MinLC:     4,
	Alignment: 1,
}
View Source
var ArchRISCV64 = &Arch{
	Name:      "riscv64",
	Family:    RISCV64,
	ByteOrder: binary.LittleEndian,
	PtrSize:   8,
	RegSize:   8,
	MinLC:     4,
	Alignment: 8,
}
View Source
var ArchS390X = &Arch{
	Name:      "s390x",
	Family:    S390X,
	ByteOrder: binary.BigEndian,
	PtrSize:   8,
	RegSize:   8,
	MinLC:     2,
	Alignment: 1,
}
View Source
var ArchWasm = &Arch{
	Name:      "wasm",
	Family:    Wasm,
	ByteOrder: binary.LittleEndian,
	PtrSize:   8,
	RegSize:   8,
	MinLC:     1,
	Alignment: 1,
}

Functions

func BuildModeSupported added in go1.14

func BuildModeSupported(compiler, buildmode, goos, goarch string) bool

BuildModeSupported reports whether goos/goarch supports the given build mode using the given compiler.

func InternalLinkPIESupported added in go1.16

func InternalLinkPIESupported(goos, goarch string) bool

func MSanSupported added in go1.12

func MSanSupported(goos, goarch string) bool

MSanSupported reports whether goos/goarch supports the memory sanitizer option. There is a copy of this function in misc/cgo/testsanitizers/cc_test.go.

func MustLinkExternal added in go1.13

func MustLinkExternal(goos, goarch string) bool

MustLinkExternal reports whether goos/goarch requires external linking. (This is the opposite of internal/testenv.CanInternalLink. Keep them in sync.)

func RaceDetectorSupported added in go1.12

func RaceDetectorSupported(goos, goarch string) bool

RaceDetectorSupported reports whether goos/goarch supports the race detector. There is a copy of this function in cmd/dist/test.go. Race detector only supports 48-bit VMA on arm64. But it will always return true for arm64, because we don't have VMA size information during the compile time.

Types

type Arch

type Arch struct {
	Name   string
	Family ArchFamily

	ByteOrder binary.ByteOrder

	// PtrSize is the size in bytes of pointers and the
	// predeclared "int", "uint", and "uintptr" types.
	PtrSize int

	// RegSize is the size in bytes of general purpose registers.
	RegSize int

	// MinLC is the minimum length of an instruction code.
	MinLC int

	// Alignment is maximum alignment required by the architecture
	// for any (compiler-generated) load or store instruction.
	// Loads or stores smaller than Alignment must be naturally aligned.
	// Loads or stores larger than Alignment need only be Alignment-aligned.
	Alignment int8
}

Arch represents an individual architecture.

func (*Arch) InFamily

func (a *Arch) InFamily(xs ...ArchFamily) bool

InFamily reports whether a is a member of any of the specified architecture families.

type ArchFamily

type ArchFamily byte

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

const (
	NoArch ArchFamily = iota
	AMD64
	ARM
	ARM64
	I386
	MIPS
	MIPS64
	PPC64
	RISCV64
	S390X
	Wasm
)

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