Initial import.

[mirror_edk2.git] / MdePkg / Library / BaseMemoryLibSse2 / x64 / SetMem16.asm

;------------------------------------------------------------------------------\r
;\r
; Copyright (c) 2006, Intel Corporation\r
; All rights reserved. This program and the accompanying materials\r
; are licensed and made available under the terms and conditions of the BSD License\r
; which accompanies this distribution.  The full text of the license may be found at\r
; http://opensource.org/licenses/bsd-license.php\r
;\r
; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
;\r
; Module Name:\r
;\r
;   SetMem16.asm\r
;\r
; Abstract:\r
;\r
;   SetMem16 function\r
;\r
; Notes:\r
;\r
;------------------------------------------------------------------------------\r
\r
    .code\r
\r
;------------------------------------------------------------------------------\r
;  VOID *\r
;  _mem_SetMem16 (\r
;    IN VOID   *Buffer,\r
;    IN UINTN  Count,\r
;    IN UINT16 Value\r
;    )\r
;------------------------------------------------------------------------------\r
InternalMemSetMem16 PROC    USES    rdi\r
    mov     rdi, rcx\r
    mov     r9, rdi\r
    xor     rcx, rcx\r
    sub     rcx, rdi\r
    and     rcx, 15\r
    mov     rax, r8\r
    jz      @F\r
    shr     rcx, 1\r
    cmp     rcx, rdx\r
    cmova   rcx, rdx\r
    sub     rdx, rcx\r
    rep     stosw\r
@@:\r
    mov     rcx, rdx\r
    and     edx, 7\r
    shr     rcx, 3\r
    jz      @SetWords\r
    movd    xmm0, eax\r
    pshuflw xmm0, xmm0, 0\r
    movlhps xmm0, xmm0\r
@@:\r
    movntdq [rdi], xmm0\r
    add     rdi, 16\r
    loop    @B\r
    mfence\r
@SetWords:\r
    mov     ecx, edx\r
    rep     stosw\r
    mov     rax, r9\r
    ret\r
InternalMemSetMem16 ENDP\r
\r
    END\r