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path: root/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem16.nasm
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;------------------------------------------------------------------------------
;
; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
; SPDX-License-Identifier: BSD-2-Clause-Patent
;
; Module Name:
;
;   SetMem16.nasm
;
; Abstract:
;
;   SetMem16 function
;
; Notes:
;
;------------------------------------------------------------------------------

    SECTION .text

;------------------------------------------------------------------------------
;  VOID *
;  EFIAPI
;  InternalMemSetMem16 (
;    IN VOID   *Buffer,
;    IN UINTN  Count,
;    IN UINT16 Value
;    )
;------------------------------------------------------------------------------
global ASM_PFX(InternalMemSetMem16)
ASM_PFX(InternalMemSetMem16):
    push    edi
    mov     eax, [esp + 16]
    shrd    edx, eax, 16
    shld    eax, edx, 16
    mov     edx, [esp + 12]
    mov     edi, [esp + 8]
    mov     ecx, edx
    and     edx, 3
    shr     ecx, 2
    jz      @SetWords
    movd    mm0, eax
    movd    mm1, eax
    psllq   mm0, 32
    por     mm0, mm1
.0:
    movq    [edi], mm0
    add     edi, 8
    loop    .0
@SetWords:
    mov     ecx, edx
    rep     stosw
    mov     eax, [esp + 8]
    pop     edi
    ret