mirror of https://github.com/acidanthera/audk.git
62 lines
1.6 KiB
NASM
62 lines
1.6 KiB
NASM
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//------------------------------------------------------------------------------
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//
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// Copyright (c) 2008-2009 Apple Inc. All rights reserved.
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//
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// All rights reserved. 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_memcpy4
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AREA Memcpy4, CODE, READONLY
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;
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;VOID
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;EFIAPI
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;__aeabi_memcpy (
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; IN VOID *Destination,
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; IN VOID *Source,
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; IN UINT32 Size
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; );
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;
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__aeabi_memcpy4
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stmdb sp!, {r4, lr}
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subs r2, r2, #32 ; 0x20
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bcc memcpy4_label2
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memcpy4_label1
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ldmcsia r1!, {r3, r4, ip, lr}
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stmcsia r0!, {r3, r4, ip, lr}
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ldmcsia r1!, {r3, r4, ip, lr}
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stmcsia r0!, {r3, r4, ip, lr}
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subcss r2, r2, #32 ; 0x20
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bcs memcpy4_label1
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memcpy4_label2
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movs ip, r2, lsl #28
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ldmcsia r1!, {r3, r4, ip, lr}
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stmcsia r0!, {r3, r4, ip, lr}
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ldmmiia r1!, {r3, r4}
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stmmiia r0!, {r3, r4}
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ldmia sp!, {r4, lr}
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movs ip, r2, lsl #30
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ldrcs r3, [r1], #4
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strcs r3, [r0], #4
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bxeq lr
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_memcpy4_lastbytes_aligned
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movs r2, r2, lsl #31
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ldrcsh r3, [r1], #2
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ldrmib r2, [r1], #1
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strcsh r3, [r0], #2
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strmib r2, [r0], #1
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bx lr
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END
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