;------------------------------------------------------------------------------ ; ; 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: ; ; LShiftU64.nasm ; ; Abstract: ; ; 64-bit left shift function for IA-32 ; ;------------------------------------------------------------------------------ SECTION .text ;------------------------------------------------------------------------------ ; UINT64 ; EFIAPI ; InternalMathLShiftU64 ( ; IN UINT64 Operand, ; IN UINTN Count ; ); ;------------------------------------------------------------------------------ global ASM_PFX(InternalMathLShiftU64) ASM_PFX(InternalMathLShiftU64): mov cl, [esp + 12] xor eax, eax mov edx, [esp + 4] test cl, 32 ; Count >= 32? jnz .0 mov eax, edx mov edx, [esp + 8] .0: shld edx, eax, cl shl eax, cl ret