ArmPkg/Library/CompilerIntrinsicsLib/memcpy_ms.c

   1 //------------------------------------------------------------------------------
   2 //
   3 // Copyright (c) 2017, Pete Batard. All rights reserved.<BR>
   4 //
   5 // This program and the accompanying materials are licensed and made
   6 // available under the terms and conditions of the BSD License which
   7 // accompanies this distribution.  The full text of the license may be
   8 // found at http://opensource.org/licenses/bsd-license.php
   9 //
  10 // THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11 // WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR
  12 // IMPLIED.
  13 //
  14 //------------------------------------------------------------------------------
  15
  16 #if defined(_M_ARM64)
  17 typedef unsigned __int64  size_t;
  18 #else
  19 typedef unsigned __int32  size_t;
  20 #endif
  21
  22 void* memcpy(void *, const void *, size_t);
  23 #pragma intrinsic(memcpy)
  24 #pragma function(memcpy)
  25 void* memcpy(void *dest, const void *src, size_t n)
  26 {
  27   unsigned char *d = dest;
  28   unsigned char const *s = src;
  29
  30   while (n--)
  31     *d++ = *s++;
  32
  33   return dest;
  34 }