1;------------------------------------------------------------------------------
2;
3; Copyright (c) 2006 - 2015, 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;   LRotU64.asm
15;
16; Abstract:
17;
18;   64-bit left rotation for Ia32
19;
20;------------------------------------------------------------------------------
21
22    .686
23    .model  flat,C
24    .code
25
26;------------------------------------------------------------------------------
27; UINT64
28; EFIAPI
29; InternalMathLRotU64 (
30;   IN      UINT64                    Operand,
31;   IN      UINTN                     Count
32;   );
33;------------------------------------------------------------------------------
34InternalMathLRotU64 PROC    USES    ebx
35    mov     cl, [esp + 16]
36    mov     edx, [esp + 12]
37    mov     eax, [esp + 8]
38    shld    ebx, edx, cl
39    shld    edx, eax, cl
40    ror     ebx, cl
41    shld    eax, ebx, cl
42    test    cl, 32                      ; Count >= 32?
43    jz      @F
44    mov     ecx, eax
45    mov     eax, edx
46    mov     edx, ecx
47@@:
48    ret
49InternalMathLRotU64 ENDP
50
51    END
52