audk/ArmPkg/Library/CompilerIntrinsicsLib/memcpy.c

//------------------------------------------------------------------------------
//
// Copyright (c) 2016, Linaro Ltd. All rights reserved.<BR>
// Copyright (c) 2021, Arm Limited. All rights reserved.<BR>
//
// SPDX-License-Identifier: BSD-2-Clause-Patent
//
//------------------------------------------------------------------------------

typedef __SIZE_TYPE__ size_t;

static void __memcpy(void *dest, const void *src, size_t n)
{
  unsigned char *d;
  unsigned char const *s;

  d = dest;
  s = src;

  while (n-- != 0) {
    *d++ = *s++;
  }
}

void *memcpy(void *dest, const void *src, size_t n)
{
  __memcpy(dest, src, n);
  return dest;
}

#ifdef __arm__

__attribute__((__alias__("__memcpy")))
void __aeabi_memcpy(void *dest, const void *src, size_t n);

__attribute__((__alias__("__memcpy")))
void __aeabi_memcpy4(void *dest, const void *src, size_t n);

__attribute__((__alias__("__memcpy")))
void __aeabi_memcpy8(void *dest, const void *src, size_t n);

#endif