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| ;------------------------------------------------------------------------------
| ;
| ; Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>
| ; SPDX-License-Identifier: BSD-2-Clause-Patent
| ;
| ; 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
|
|
|
