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c6e11fe037
Information about CPU architectures (e.g., name, family, byte ordering, pointer and register size) is currently redundantly scattered around the source tree. Instead consolidate the basic information into a single new package cmd/internal/sys. Also, introduce new sys.I386, sys.AMD64, etc. names for the constants '8', '6', etc. and replace most uses of the latter. The notable exceptions are a couple of error messages that still refer to the old char-based toolchain names and function reltype in cmd/link. Passes toolstash/buildall. Change-Id: I8a6f0cbd49577ec1672a98addebc45f767e36461 Reviewed-on: https://go-review.googlesource.com/21623 Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
145 lines
2.4 KiB
Go
145 lines
2.4 KiB
Go
// Copyright 2016 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package sys
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import "encoding/binary"
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// ArchFamily represents an architecture family.
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type ArchFamily byte
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const (
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AMD64 ArchFamily = '6'
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ARM ArchFamily = '5'
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ARM64 ArchFamily = '7'
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I386 ArchFamily = '8'
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MIPS64 ArchFamily = '0'
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PPC64 ArchFamily = '9'
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S390X ArchFamily = 'z'
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)
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// Arch represents an individual architecture.
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type Arch struct {
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Name string
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Family ArchFamily
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ByteOrder binary.ByteOrder
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IntSize int
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PtrSize int
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RegSize int
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MinLC int
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}
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// HasFamily reports whether a is a member of any of the specified
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// architecture families.
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func (a *Arch) InFamily(xs ...ArchFamily) bool {
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for _, x := range xs {
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if a.Family == x {
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return true
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}
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}
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return false
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}
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var Arch386 = &Arch{
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Name: "386",
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Family: I386,
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ByteOrder: binary.LittleEndian,
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IntSize: 4,
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PtrSize: 4,
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RegSize: 4,
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MinLC: 1,
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}
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var ArchAMD64 = &Arch{
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Name: "amd64",
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Family: AMD64,
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ByteOrder: binary.LittleEndian,
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IntSize: 8,
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PtrSize: 8,
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RegSize: 8,
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MinLC: 1,
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}
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var ArchAMD64P32 = &Arch{
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Name: "amd64p32",
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Family: AMD64,
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ByteOrder: binary.LittleEndian,
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IntSize: 4,
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PtrSize: 4,
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RegSize: 8,
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MinLC: 1,
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}
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var ArchARM = &Arch{
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Name: "arm",
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Family: ARM,
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ByteOrder: binary.LittleEndian,
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IntSize: 4,
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PtrSize: 4,
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RegSize: 4,
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MinLC: 4,
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}
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var ArchARM64 = &Arch{
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Name: "arm64",
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Family: ARM64,
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ByteOrder: binary.LittleEndian,
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IntSize: 8,
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PtrSize: 8,
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RegSize: 8,
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MinLC: 4,
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}
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var ArchMIPS64 = &Arch{
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Name: "mips64",
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Family: MIPS64,
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ByteOrder: binary.BigEndian,
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IntSize: 8,
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PtrSize: 8,
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RegSize: 8,
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MinLC: 4,
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}
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var ArchMIPS64LE = &Arch{
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Name: "mips64le",
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Family: MIPS64,
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ByteOrder: binary.LittleEndian,
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IntSize: 8,
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PtrSize: 8,
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RegSize: 8,
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MinLC: 4,
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}
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var ArchPPC64 = &Arch{
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Name: "ppc64",
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Family: PPC64,
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ByteOrder: binary.BigEndian,
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IntSize: 8,
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PtrSize: 8,
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RegSize: 8,
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MinLC: 4,
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}
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var ArchPPC64LE = &Arch{
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Name: "ppc64le",
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Family: PPC64,
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ByteOrder: binary.LittleEndian,
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IntSize: 8,
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PtrSize: 8,
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RegSize: 8,
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MinLC: 4,
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}
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var ArchS390X = &Arch{
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Name: "s390x",
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Family: S390X,
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ByteOrder: binary.BigEndian,
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IntSize: 8,
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PtrSize: 8,
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RegSize: 8,
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MinLC: 2,
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}
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