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