;------------------------------------------------------------------------------ ; ; Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR> ; This program and the accompanying materials ; are licensed and made available under the terms and conditions of the BSD License ; which accompanies this distribution. The full text of the license may be found at ; http://opensource.org/licenses/bsd-license.php. ; ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. ; ; Module Name: ; ; LRotU64.nasm ; ; Abstract: ; ; 64-bit left rotation for Ia32 ; ;------------------------------------------------------------------------------ SECTION .text ;------------------------------------------------------------------------------ ; UINT64 ; EFIAPI ; InternalMathLRotU64 ( ; IN UINT64 Operand, ; IN UINTN Count ; ); ;------------------------------------------------------------------------------ global ASM_PFX(InternalMathLRotU64) ASM_PFX(InternalMathLRotU64): push ebx mov cl, [esp + 16] mov edx, [esp + 12] mov eax, [esp + 8] shld ebx, edx, cl shld edx, eax, cl ror ebx, cl shld eax, ebx, cl test cl, 32 ; Count >= 32? jz .0 mov ecx, eax mov eax, edx mov edx, ecx .0: pop ebx ret