EdkCompatibilityPkg/Foundation/Library/CompilerStub/memcpy.c

   1 /*++
   2
   3 Copyright (c) 2006, Intel Corporation
   4 All rights reserved. This program and the accompanying materials
   5 are licensed and made available under the terms and conditions of the BSD License
   6 which accompanies this distribution.  The full text of the license may be found at
   7 http://opensource.org/licenses/bsd-license.php
   8
   9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12 Module Name:
  13   memcpy.c
  14
  15 Abstract:
  16
  17   The Microsoft compiler inlines memcpy and we can not stop it.
  18   These routines allow the code to link!
  19
  20   There is no *.h definition of these modules as they are well known by the
  21   compiler. See Microsoft documentation for more details!
  22
  23   volatile is used to prevent the compiler from trying to implement these
  24   C functions as inline functions.
  25
  26 --*/
  27
  28 #include "Tiano.h"
  29
  30 VOID *
  31 memcpy (
  32   OUT VOID        *Dest,
  33   IN  const VOID  *Src,
  34   IN  UINTN       Count
  35   )
  36 ;
  37
  38 #ifdef _MSC_EXTENSIONS
  39 #pragma intrinsic(memcpy)
  40 #else
  41  VOID *
  42 memcpy (
  43   OUT VOID        *Dest,
  44   IN  const VOID  *Src,
  45   IN  UINTN       Count
  46   )
  47 {
  48   volatile UINT8  *Ptr;
  49   const    UINT8  *Source;
  50
  51   for (Ptr = Dest, Source = Src; Count > 0; Count--, Source++, Ptr++) {
  52     *Ptr = *Source;
  53   }
  54
  55   return Dest;
  56 }
  57 #endif
  58