mirror of https://github.com/acidanthera/audk.git
56 lines
1.4 KiB
NASM
56 lines
1.4 KiB
NASM
;------------------------------------------------------------------------------
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;
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; Copyright (c) 2007, 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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; SetMem.asm
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;
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; Abstract:
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;
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; memset 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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; memset (
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; OUT VOID *Buffer,
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; IN UINT8 Value,
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; IN UINTN Count
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; )
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;------------------------------------------------------------------------------
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memset PROC USES rdi
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cmp r8, 0 ; if Size == 0, do nothing
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mov r9, rcx
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je @SetDone
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mov al, dl
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mov ah, al
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shrd edx, eax, 16
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shld eax, edx, 16
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mov rdi, rcx
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mov rcx, r8
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shr rcx, 2
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rep stosd
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mov rcx, r8
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and rcx, 3
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rep stosb
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@SetDone:
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mov rax, r9
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ret
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memset ENDP
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END
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