ArmPkg/Library/CompilerIntrinsicsLib/memcpy.c

   1 //------------------------------------------------------------------------------
   2 //
   3 // Copyright (c) 2016, Linaro Ltd. 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 typedef __SIZE_TYPE__ size_t;
  17
  18 static void __memcpy(void *dest, const void *src, size_t n)
  19 {
  20   unsigned char *d = dest;
  21   unsigned char const *s = src;
  22
  23   while (n--)
  24     *d++ = *s++;
  25 }
  26
  27 void *memcpy(void *dest, const void *src, size_t n)
  28 {
  29   __memcpy(dest, src, n);
  30   return dest;
  31 }
  32
  33 #ifdef __arm__
  34
  35 __attribute__((__alias__("__memcpy")))
  36 void __aeabi_memcpy(void *dest, const void *src, size_t n);
  37
  38 __attribute__((__alias__("__memcpy")))
  39 void __aeabi_memcpy4(void *dest, const void *src, size_t n);
  40
  41 __attribute__((__alias__("__memcpy")))
  42 void __aeabi_memcpy8(void *dest, const void *src, size_t n);
  43
  44 #endif