mirror of
https://gitea.com/gitea/tea.git
synced 2024-11-26 04:21:37 +01:00
6cff3b1cc7
Merge branch 'master' into vendor-migrate-go-git Merge branch 'master' into vendor-migrate-go-git migrate src-d/go-git -> go-git/go-git Co-authored-by: 6543 <6543@obermui.de> Reviewed-on: https://gitea.com/gitea/tea/pulls/128 Reviewed-by: techknowlogick <techknowlogick@gitea.io> Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
61 lines
1.8 KiB
Go
61 lines
1.8 KiB
Go
// Copyright 2019 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 cpu
|
|
|
|
import (
|
|
"runtime"
|
|
)
|
|
|
|
// byteOrder is a subset of encoding/binary.ByteOrder.
|
|
type byteOrder interface {
|
|
Uint32([]byte) uint32
|
|
Uint64([]byte) uint64
|
|
}
|
|
|
|
type littleEndian struct{}
|
|
type bigEndian struct{}
|
|
|
|
func (littleEndian) Uint32(b []byte) uint32 {
|
|
_ = b[3] // bounds check hint to compiler; see golang.org/issue/14808
|
|
return uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24
|
|
}
|
|
|
|
func (littleEndian) Uint64(b []byte) uint64 {
|
|
_ = b[7] // bounds check hint to compiler; see golang.org/issue/14808
|
|
return uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 |
|
|
uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56
|
|
}
|
|
|
|
func (bigEndian) Uint32(b []byte) uint32 {
|
|
_ = b[3] // bounds check hint to compiler; see golang.org/issue/14808
|
|
return uint32(b[3]) | uint32(b[2])<<8 | uint32(b[1])<<16 | uint32(b[0])<<24
|
|
}
|
|
|
|
func (bigEndian) Uint64(b []byte) uint64 {
|
|
_ = b[7] // bounds check hint to compiler; see golang.org/issue/14808
|
|
return uint64(b[7]) | uint64(b[6])<<8 | uint64(b[5])<<16 | uint64(b[4])<<24 |
|
|
uint64(b[3])<<32 | uint64(b[2])<<40 | uint64(b[1])<<48 | uint64(b[0])<<56
|
|
}
|
|
|
|
// hostByteOrder returns binary.LittleEndian on little-endian machines and
|
|
// binary.BigEndian on big-endian machines.
|
|
func hostByteOrder() byteOrder {
|
|
switch runtime.GOARCH {
|
|
case "386", "amd64", "amd64p32",
|
|
"arm", "arm64",
|
|
"mipsle", "mips64le", "mips64p32le",
|
|
"ppc64le",
|
|
"riscv", "riscv64":
|
|
return littleEndian{}
|
|
case "armbe", "arm64be",
|
|
"mips", "mips64", "mips64p32",
|
|
"ppc", "ppc64",
|
|
"s390", "s390x",
|
|
"sparc", "sparc64":
|
|
return bigEndian{}
|
|
}
|
|
panic("unknown architecture")
|
|
}
|