ArmPkg/Library/CompilerIntrinsicsLib/Arm/memcpy.asm

   1 //------------------------------------------------------------------------------
   2 //
   3 // Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
   4 //
   5 // This program and the accompanying materials
   6 // are licensed and made available under the terms and conditions of the BSD License
   7 // which accompanies this distribution.  The full text of the license may be found at
   8 // 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 IMPLIED.
  12 //
  13 //------------------------------------------------------------------------------
  14
  15
  16
  17     INCLUDE AsmMacroExport.inc
  18
  19 ;
  20 ;VOID
  21 ;EFIAPI
  22 ;__aeabi_memcpy (
  23 ; IN  VOID    *Destination,
  24 ; IN  VOID    *Source,
  25 ; IN  UINT32  Size
  26 ; );
  27 ;
  28  RVCT_ASM_EXPORT __aeabi_memcpy
  29   cmp     r2, #0
  30   bxeq    lr
  31   push    {lr}
  32   mov     lr, r0
  33 L5
  34   ldrb  r3, [r1], #1
  35   strb  r3, [lr], #1
  36   subs r2, r2, #1
  37   bne  L5
  38   pop  {pc}
  39
  40   END