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// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package sys
import "encoding/binary"
// ArchFamily represents a family of one or more related architectures.
// For example, amd64 and amd64p32 are both members of the AMD64 family,
// and ppc64 and ppc64le are both members of the PPC64 family.
type ArchFamily byte
const (
AMD64 ArchFamily = iota
ARM
ARM64
I386
MIPS64
PPC64
S390X
)
// Arch represents an individual architecture.
type Arch struct {
Name string
Family ArchFamily
ByteOrder binary.ByteOrder
IntSize int
PtrSize int
RegSize int
// MinLC is the minimum length of an instruction code.
MinLC int
}
// InFamily reports whether a is a member of any of the specified
// architecture families.
func (a *Arch) InFamily(xs ...ArchFamily) bool {
for _, x := range xs {
if a.Family == x {
return true
}
}
return false
}
var Arch386 = &Arch{
Name: "386",
Family: I386,
ByteOrder: binary.LittleEndian,
IntSize: 4,
PtrSize: 4,
RegSize: 4,
MinLC: 1,
}
var ArchAMD64 = &Arch{
Name: "amd64",
Family: AMD64,
ByteOrder: binary.LittleEndian,
IntSize: 8,
PtrSize: 8,
RegSize: 8,
MinLC: 1,
}
var ArchAMD64P32 = &Arch{
Name: "amd64p32",
Family: AMD64,
ByteOrder: binary.LittleEndian,
IntSize: 4,
PtrSize: 4,
RegSize: 8,
MinLC: 1,
}
var ArchARM = &Arch{
Name: "arm",
Family: ARM,
ByteOrder: binary.LittleEndian,
IntSize: 4,
PtrSize: 4,
RegSize: 4,
MinLC: 4,
}
var ArchARM64 = &Arch{
Name: "arm64",
Family: ARM64,
ByteOrder: binary.LittleEndian,
IntSize: 8,
PtrSize: 8,
RegSize: 8,
MinLC: 4,
}
var ArchMIPS64 = &Arch{
Name: "mips64",
Family: MIPS64,
ByteOrder: binary.BigEndian,
IntSize: 8,
PtrSize: 8,
RegSize: 8,
MinLC: 4,
}
var ArchMIPS64LE = &Arch{
Name: "mips64le",
Family: MIPS64,
ByteOrder: binary.LittleEndian,
IntSize: 8,
PtrSize: 8,
RegSize: 8,
MinLC: 4,
}
var ArchPPC64 = &Arch{
Name: "ppc64",
Family: PPC64,
ByteOrder: binary.BigEndian,
IntSize: 8,
PtrSize: 8,
RegSize: 8,
MinLC: 4,
}
var ArchPPC64LE = &Arch{
Name: "ppc64le",
Family: PPC64,
ByteOrder: binary.LittleEndian,
IntSize: 8,
PtrSize: 8,
RegSize: 8,
MinLC: 4,
}
var ArchS390X = &Arch{
Name: "s390x",
Family: S390X,
ByteOrder: binary.BigEndian,
IntSize: 8,
PtrSize: 8,
RegSize: 8,
MinLC: 2,
}
var Archs = [...]*Arch{
Arch386,
ArchAMD64,
ArchAMD64P32,
ArchARM,
ArchARM64,
ArchMIPS64,
ArchMIPS64LE,
ArchPPC64,
ArchPPC64LE,
ArchS390X,
}
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