ArmPkg/Library/CompilerIntrinsicsLib/memcpy.c

   1 //------------------------------------------------------------------------------
   2 //
   3 // Copyright (c) 2016, Linaro Ltd. All rights reserved.<BR>
   4 // Copyright (c) 2021, Arm Limited. All rights reserved.<BR>
   5 //
   6 // SPDX-License-Identifier: BSD-2-Clause-Patent
   7 //
   8 //------------------------------------------------------------------------------
   9
  10 typedef __SIZE_TYPE__ size_t;
  11
  12 static void __memcpy(void *dest, const void *src, size_t n)
  13 {
  14   unsigned char *d;
  15   unsigned char const *s;
  16
  17   d = dest;
  18   s = src;
  19
  20   while (n-- != 0) {
  21     *d++ = *s++;
  22   }
  23 }
  24
  25 void *memcpy(void *dest, const void *src, size_t n)
  26 {
  27   __memcpy(dest, src, n);
  28   return dest;
  29 }
  30
  31 #ifdef __arm__
  32
  33 __attribute__((__alias__("__memcpy")))
  34 void __aeabi_memcpy(void *dest, const void *src, size_t n);
  35
  36 __attribute__((__alias__("__memcpy")))
  37 void __aeabi_memcpy4(void *dest, const void *src, size_t n);
  38
  39 __attribute__((__alias__("__memcpy")))
  40 void __aeabi_memcpy8(void *dest, const void *src, size_t n);
  41
  42 #endif