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; LShiftU64.nasm 15; 16; Abstract: 17; 18; 64-bit left shift function for IA-32 19; 20;------------------------------------------------------------------------------ 21 22 SECTION .text 23 24;------------------------------------------------------------------------------ 25; UINT64 26; EFIAPI 27; InternalMathLShiftU64 ( 28; IN UINT64 Operand, 29; IN UINTN Count 30; ); 31;------------------------------------------------------------------------------ 32global ASM_PFX(InternalMathLShiftU64) 33ASM_PFX(InternalMathLShiftU64): 34 mov cl, [esp + 12] 35 xor eax, eax 36 mov edx, [esp + 4] 37 test cl, 32 ; Count >= 32? 38 jnz .0 39 mov eax, edx 40 mov edx, [esp + 8] 41.0: 42 shld edx, eax, cl 43 shl eax, cl 44 ret 45 46