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;   SetMem32.asm
15;
16; Abstract:
17;
18;   SetMem32 function
19;
20; Notes:
21;
22;------------------------------------------------------------------------------
23
24    .686
25    .model  flat,C
26    .mmx
27    .code
28
29;------------------------------------------------------------------------------
30;  VOID *
31;  EFIAPI
32;  InternalMemSetMem32 (
33;    IN VOID   *Buffer,
34;    IN UINTN  Count,
35;    IN UINT32 Value
36;    );
37;------------------------------------------------------------------------------
38InternalMemSetMem32 PROC
39    mov     eax, [esp + 4]              ; eax <- Buffer as return value
40    mov     ecx, [esp + 8]              ; ecx <- Count
41    movd    mm0, dword ptr [esp + 12]             ; mm0 <- Value
42    shr     ecx, 1                      ; ecx <- number of qwords to set
43    mov     edx, eax                    ; edx <- Buffer
44    jz      @SetDwords
45    movq    mm1, mm0
46    psllq   mm1, 32
47    por     mm0, mm1
48@@:
49    movq    qword ptr [edx], mm0
50    lea     edx, [edx + 8]              ; use "lea" to avoid change in flags
51    loop    @B
52@SetDwords:
53    jnc     @F
54    movd    dword ptr [edx], mm0
55@@:
56    ret
57InternalMemSetMem32 ENDP
58
59    END
60