gcc/libgo/go/runtime/unaligned2.go
Ian Lance Taylor b95cd48b01 libgo: remove old MIPS architecture names
This removes the old names for the 3 main MIPS ABIs: mipso32, mipsn32
    and mipsn64. It also removes the mipso64 ABI which has no equivalent
    architecture name in go. This ABI has been dead for sometime and I doubt
    anyone will miss it.
    
    Reviewed-on: https://go-review.googlesource.com/46154

From-SVN: r249477
2017-06-21 22:11:04 +00:00

21 lines
739 B
Go

// Copyright 2014 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.
// +build arm mips mipsle mips64 mips64le armbe m68k sparc alpha ia64 mips64p32 mips64p32le sparc64
package runtime
import "unsafe"
// Note: These routines perform the read with an unspecified endianness.
func readUnaligned32(p unsafe.Pointer) uint32 {
q := (*[4]byte)(p)
return uint32(q[0]) + uint32(q[1])<<8 + uint32(q[2])<<16 + uint32(q[3])<<24
}
func readUnaligned64(p unsafe.Pointer) uint64 {
q := (*[8]byte)(p)
return uint64(q[0]) + uint64(q[1])<<8 + uint64(q[2])<<16 + uint64(q[3])<<24 + uint64(q[4])<<32 + uint64(q[5])<<40 + uint64(q[6])<<48 + uint64(q[7])<<56
}