summaryrefslogtreecommitdiffstats
path: root/MdePkg/Library/BaseMemoryLibSse2/Ia32/ScanMem16.nasm
blob: 7a3332b53f32081cc86fe214a95bf872ef7f7a41 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
;------------------------------------------------------------------------------
;
; Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
; SPDX-License-Identifier: BSD-2-Clause-Patent
;
; Module Name:
;
;   ScanMem16.Asm
;
; Abstract:
;
;   ScanMem16 function
;
; Notes:
;
;   The following BaseMemoryLib instances contain the same copy of this file:
;
;       BaseMemoryLibRepStr
;       BaseMemoryLibMmx
;       BaseMemoryLibSse2
;       BaseMemoryLibOptDxe
;       BaseMemoryLibOptPei
;
;------------------------------------------------------------------------------

    SECTION .text

;------------------------------------------------------------------------------
; CONST VOID *
; EFIAPI
; InternalMemScanMem16 (
;   IN      CONST VOID                *Buffer,
;   IN      UINTN                     Length,
;   IN      UINT16                    Value
;   );
;------------------------------------------------------------------------------
global ASM_PFX(InternalMemScanMem16)
ASM_PFX(InternalMemScanMem16):
    push    edi
    mov     ecx, [esp + 12]
    mov     edi, [esp + 8]
    mov     eax, [esp + 16]
    repne   scasw
    lea     eax, [edi - 2]
    cmovnz  eax, ecx
    pop     edi
    ret