Renamed remotely

[mirror_edk2.git] / EdkCompatibilityPkg / Foundation / Library / EfiCommonLib / x64 / EfiZeroMem.asm

;------------------------------------------------------------------------------\r
;\r
; Copyright (c) 2007, 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
;   ZeroMem.asm\r
;\r
; Abstract:\r
;\r
;   ZeroMem function\r
;\r
; Notes:\r
;\r
;------------------------------------------------------------------------------\r
\r
    .code\r
\r
;------------------------------------------------------------------------------\r
;  VOID *\r
;  EfiCommonLibZeroMem (\r
;    IN VOID   *Buffer,\r
;    IN UINTN  Size\r
;    );\r
;------------------------------------------------------------------------------\r
EfiCommonLibZeroMem  PROC    USES    rdi\r
    mov     rdi, rcx\r
    mov     rcx, rdx\r
    mov     r8, rdi\r
    and     edx, 7\r
    shr     rcx, 3\r
    jz      @ZeroBytes\r
    DB      0fh, 0efh, 0c0h             ; pxor mm0, mm0\r
@@:\r
    DB      48h, 0fh, 7eh, 07h          ; movd [rdi], mm0\r
    add     rdi, 8\r
    loop    @B\r
@ZeroBytes:\r
    xor     eax, eax\r
    mov     ecx, edx\r
    rep     stosb\r
    mov     rax, r8\r
    ret\r
EfiCommonLibZeroMem  ENDP\r
\r
    END\r