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| #------------------------------------------------------------------------------
| #
| # Copyright (c) 2011-2014, ARM Limited. All rights reserved.
| #
| # SPDX-License-Identifier: BSD-2-Clause-Patent
| #
| #------------------------------------------------------------------------------
|
| #include <AsmMacroIoLib.h>
|
| # VOID
| # EFIAPI
| # memmove (
| # IN VOID *Destination,
| # IN CONST VOID *Source,
| # IN UINT32 Size
| # );
| ASM_FUNC(memmove)
| CMP r2, #0
| BXEQ lr
| CMP r0, r1
| BXEQ lr
| BHI memmove_backward
|
| memmove_forward:
| LDRB r3, [r1], #1
| STRB r3, [r0], #1
| SUBS r2, r2, #1
| BXEQ lr
| B memmove_forward
|
| memmove_backward:
| add r0, r2
| add r1, r2
| memmove_backward_loop:
| LDRB r3, [r1, #-1]!
| STRB r3, [r0, #-1]!
| SUBS r2, r2, #1
| BXEQ lr
| B memmove_backward_loop
|
|
