2014-08-19 15:29:52 +02:00
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//------------------------------------------------------------------------------
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2013-01-25 12:28:06 +01:00
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//
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// Copyright (c) 2011, ARM Limited. All rights reserved.
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//
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// This program and the accompanying materials
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// are licensed and made available under the terms and conditions of the BSD License
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// which accompanies this distribution. The full text of the license may be found at
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// http://opensource.org/licenses/bsd-license.php
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//
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// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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//
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//------------------------------------------------------------------------------
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EXPORT __aeabi_memmove
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AREA Memmove, CODE, READONLY
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;
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;VOID
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;EFIAPI
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;__aeabi_memmove (
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; IN VOID *Destination,
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; IN CONST VOID *Source,
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; IN UINT32 Size
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; );
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;
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__aeabi_memmove
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CMP r2, #0
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BXEQ r14
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CMP r0, r1
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BXEQ r14
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BHI memmove_backward
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BLS memmove_forward
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memmove_forward
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LDRB r3, [r1], #1
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STRB r3, [r0], #1
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SUBS r2, r2, #1
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BXEQ r14
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B memmove_forward
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memmove_backward
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add r0, r2
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add r1, r2
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memmove_backward_loop
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LDRB r3, [r1], #-1
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STRB r3, [r0], #-1
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SUBS r2, r2, #-1
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BXEQ r14
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B memmove_backward_loop
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END
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