903e31242d
Annotate functions with ASM_FUNC() so that they are emitted into separate sections. Note that in some cases, various entry points refer to different parts of the same routine, so in those cases, the files have been left untouched. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
47 lines
1.2 KiB
ArmAsm
47 lines
1.2 KiB
ArmAsm
#------------------------------------------------------------------------------
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#
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# Copyright (c) 2011-2014, 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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#include <AsmMacroIoLib.h>
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# VOID
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# EFIAPI
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# 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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ASM_FUNC(memmove)
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CMP r2, #0
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BXEQ lr
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CMP r0, r1
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BXEQ lr
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BHI memmove_backward
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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 lr
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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 lr
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B memmove_backward_loop
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