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; RShiftU64.asm 15; 16; Abstract: 17; 18; 64-bit logical right shift function for IA-32 19; 20;------------------------------------------------------------------------------ 21 22 .686 23 .model flat,C 24 .code 25 26;------------------------------------------------------------------------------ 27; UINT64 28; EFIAPI 29; InternalMathRShiftU64 ( 30; IN UINT64 Operand, 31; IN UINTN Count 32; ); 33;------------------------------------------------------------------------------ 34InternalMathRShiftU64 PROC 35 mov cl, [esp + 12] ; cl <- Count 36 xor edx, edx 37 mov eax, [esp + 8] 38 test cl, 32 ; Count >= 32? 39 jnz @F 40 mov edx, eax 41 mov eax, [esp + 4] 42@@: 43 shrd eax, edx, cl 44 shr edx, cl 45 ret 46InternalMathRShiftU64 ENDP 47 48 END 49