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; RRotU64.nasm 15; 16; Abstract: 17; 18; 64-bit right rotation for Ia32 19; 20;------------------------------------------------------------------------------ 21 22 SECTION .text 23 24;------------------------------------------------------------------------------ 25; UINT64 26; EFIAPI 27; InternalMathRRotU64 ( 28; IN UINT64 Operand, 29; IN UINTN Count 30; ); 31;------------------------------------------------------------------------------ 32global ASM_PFX(InternalMathRRotU64) 33ASM_PFX(InternalMathRRotU64): 34 push ebx 35 mov cl, [esp + 16] 36 mov eax, [esp + 8] 37 mov edx, [esp + 12] 38 shrd ebx, eax, cl 39 shrd eax, edx, cl 40 rol ebx, cl 41 shrd edx, ebx, cl 42 test cl, 32 ; Count >= 32? 43 jz .0 44 mov ecx, eax ; switch eax & edx if Count >= 32 45 mov eax, edx 46 mov edx, ecx 47.0: 48 pop ebx 49 ret 50 51