1//------------------------------------------------------------------------------
2//
3// Copyright (c) 2011-2014, ARM Limited. All rights reserved.
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_memmove (
23; IN  VOID          *Destination,
24; IN  CONST VOID    *Source,
25; IN  UINT32        Size
26; );
27;
28 RVCT_ASM_EXPORT __aeabi_memmove
29  CMP     r2, #0
30  BXEQ    lr
31  CMP     r0, r1
32  BXEQ    lr
33  BHI     memmove_backward
34
35memmove_forward
36  LDRB    r3, [r1], #1
37  STRB    r3, [r0], #1
38  SUBS    r2, r2, #1
39  BNE     memmove_forward
40  BX      lr
41
42memmove_backward
43  add     r0, r2
44  add     r1, r2
45memmove_backward_loop
46  LDRB    r3, [r1, #-1]!
47  STRB    r3, [r0, #-1]!
48  SUBS    r2, r2, #1
49  BNE     memmove_backward_loop
50  BX      lr
51
52  END
53