eb227e96bd
2. Optimized register usage in SetMemXX functions in all lib instances 3. Fixed a logical error in CopyMem for all lib instances git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1139 6f19259b-4bc3-4df7-8a09-765794883524
58 lines
1.6 KiB
NASM
58 lines
1.6 KiB
NASM
;------------------------------------------------------------------------------
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;
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; Copyright (c) 2006, Intel Corporation
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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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; Module Name:
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;
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; SetMem16.asm
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;
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; Abstract:
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;
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; SetMem16 function
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;
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; Notes:
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;
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;------------------------------------------------------------------------------
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.code
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;------------------------------------------------------------------------------
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; VOID *
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; EFIAPI
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; InternalMemSetMem16 (
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; OUT VOID *Buffer,
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; IN UINTN Length,
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; IN UINT16 Value
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; );
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;------------------------------------------------------------------------------
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InternalMemSetMem16 PROC USES rdi
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mov rax, r8
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DB 48h, 0fh, 6eh, 0c0h ; movd mm0, rax
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mov r8, rcx
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mov rdi, r8
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mov rcx, rdx
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and edx, 3
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shr rcx, 2
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jz @SetWords
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DB 0fh, 70h, 0C0h, 00h ; pshufw mm0, mm0, 0h
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@@:
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DB 0fh, 0e7h, 07h ; movntq [rdi], mm0
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add rdi, 8
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loop @B
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mfence
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@SetWords:
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mov ecx, edx
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rep stosw
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mov rax, r8
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ret
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InternalMemSetMem16 ENDP
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END
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