mirror of https://github.com/acidanthera/audk.git
67 lines
1.5 KiB
NASM
67 lines
1.5 KiB
NASM
;------------------------------------------------------------------------------
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;
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; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
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; SPDX-License-Identifier: BSD-2-Clause-Patent
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;
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; Module Name:
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;
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; SetMem64.nasm
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;
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; Abstract:
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;
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; SetMem64 function
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;
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; Notes:
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;
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;------------------------------------------------------------------------------
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SECTION .text
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;------------------------------------------------------------------------------
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; VOID *
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; EFIAPI
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; InternalMemSetMem64 (
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; IN VOID *Buffer,
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; IN UINTN Count,
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; IN UINT64 Value
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; )
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;------------------------------------------------------------------------------
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global ASM_PFX(InternalMemSetMem64)
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ASM_PFX(InternalMemSetMem64):
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mov eax, [esp + 4] ; eax <- Buffer
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mov ecx, [esp + 8] ; ecx <- Count
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test al, 8
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mov edx, eax
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movq xmm0, qword [esp + 12]
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jz .0
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movq qword [edx], xmm0
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add edx, 8
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dec ecx
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.0:
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push ebx
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mov ebx, ecx
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and ebx, 7
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shr ecx, 3
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jz @SetQwords
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movlhps xmm0, xmm0
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.1:
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movntdq [edx], xmm0
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movntdq [edx + 16], xmm0
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movntdq [edx + 32], xmm0
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movntdq [edx + 48], xmm0
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lea edx, [edx + 64]
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loop .1
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mfence
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@SetQwords:
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test ebx, ebx
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jz .3
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mov ecx, ebx
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.2
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movq qword [edx], xmm0
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lea edx, [edx + 8]
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loop .2
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.3:
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pop ebx
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ret
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