libgo/go/runtime/unaligned2.go

   1 // Copyright 2014 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 // +build arm mips mipsle mips64 mips64le armbe m68k sparc alpha ia64 mips64p32 mips64p32le sh shbe sparc64
   6
   7 package runtime
   8
   9 import "unsafe"
  10
  11 // Note: These routines perform the read with an unspecified endianness.
  12 func readUnaligned32(p unsafe.Pointer) uint32 {
  13         q := (*[4]byte)(p)
  14         return uint32(q[0]) + uint32(q[1])<<8 + uint32(q[2])<<16 + uint32(q[3])<<24
  15 }
  16
  17 func readUnaligned64(p unsafe.Pointer) uint64 {
  18         q := (*[8]byte)(p)
  19         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
  20 }