Update copyright for files modified in this year

[mirror_edk2.git] / MdePkg / Library / BaseMemoryLibOptDxe / X64 / SetMem.asm

;------------------------------------------------------------------------------\r
;\r
; Copyright (c) 2006 - 2008, 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
;   SetMem.Asm\r
;\r
; Abstract:\r
;\r
;   SetMem function\r
;\r
; Notes:\r
;\r
;------------------------------------------------------------------------------\r
\r
    .code\r
\r
;------------------------------------------------------------------------------\r
;  VOID *\r
;  EFIAPI\r
;  InternalMemSetMem (\r
;    IN VOID   *Buffer,\r
;    IN UINTN  Count,\r
;    IN UINT8  Value\r
;    )\r
;------------------------------------------------------------------------------\r
InternalMemSetMem   PROC    USES    rdi rbx\r
    push    rcx       ; push Buffer\r
    mov     rax, r8   ; rax = Value\r
    and     rax, 0ffh ; rax = lower 8 bits of r8, upper 56 bits are 0\r
    mov     ah,  al   ; ah  = al\r
    mov     bx,  ax   ; bx  = ax\r
    shl     rax, 10h  ; rax = ax << 16\r
    mov     ax,  bx   ; ax  = bx\r
    mov     rbx, rax  ; ebx = eax\r
    shl     rax, 20h  ; rax = rax << 32\r
    or      rax, rbx  ; eax = ebx\r
    mov     rdi, rcx  ; rdi = Buffer\r
    mov     rcx, rdx  ; rcx = Count\r
    shr     rcx, 3    ; rcx = rcx / 8\r
    cld\r
    rep     stosq \r
    mov     rcx, rdx  ; rcx = rdx\r
    and     rcx, 7    ; rcx = rcx & 7\r
    rep     stosb \r
    pop     rax       ; rax = Buffer\r
    ret\r
InternalMemSetMem   ENDP\r
\r
    END\r