1;------------------------------------------------------------------------------
2;
3; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
4; This program and the accompanying materials
5; are licensed and made available under the terms and conditions of the BSD License
6; which accompanies this distribution.  The full text of the license may be found at
7; http://opensource.org/licenses/bsd-license.php.
8;
9; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
10; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
11;
12; Module Name:
13;
14;   ZeroMem.Asm
15;
16; Abstract:
17;
18;   ZeroMem function
19;
20; Notes:
21;
22;------------------------------------------------------------------------------
23
24    .code
25
26;------------------------------------------------------------------------------
27;  VOID *
28;  InternalMemZeroMem (
29;    IN VOID   *Buffer,
30;    IN UINTN  Count
31;    );
32;------------------------------------------------------------------------------
33InternalMemZeroMem  PROC    USES    rdi
34    push    rcx       ; push Buffer
35    xor     rax, rax  ; rax = 0
36    mov     rdi, rcx  ; rdi = Buffer
37    mov     rcx, rdx  ; rcx = Count
38    shr     rcx, 3    ; rcx = rcx / 8
39    and     rdx, 7    ; rdx = rdx & 7
40    cld
41    rep     stosq
42    mov     rcx, rdx  ; rcx = rdx
43    rep     stosb
44    pop     rax       ; rax = Buffer
45    ret
46InternalMemZeroMem  ENDP
47
48    END
49