| #------------------------------------------------------------------------------ |
| # |
| # Copyright (c) 2006, Intel Corporation |
| # All rights reserved. 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: |
| # |
| # RShiftU64.asm |
| # |
| # Abstract: |
| # |
| # 64-bit logical right shift function for IA-32 |
| # |
| #------------------------------------------------------------------------------ |
| |
| .686: |
| .code: |
| |
| .globl ASM_PFX(InternalMathRShiftU64) |
| |
| #------------------------------------------------------------------------------ |
| # UINT64 |
| # EFIAPI |
| # InternalMathRShiftU64 ( |
| # IN UINT64 Operand, |
| # IN UINTN Count |
| # ); |
| #------------------------------------------------------------------------------ |
| ASM_PFX(InternalMathRShiftU64): |
| movb 12(%esp), %cl |
| xorl %edx, %edx |
| movl 8(%esp), %eax |
| testb $32, %cl |
| cmovz %eax, %edx |
| cmovz 0x4(%esp), %eax |
| shrdl %cl, %edx, %eax |
| shr %cl, %edx |
| ret |
