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b341712e 1#------------------------------------------------------------------------------\r
2#\r
2c7e5c2f
HT
3# Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>\r
4# This program and the accompanying materials\r
b341712e 5# are licensed and made available under the terms and conditions of the BSD License\r
6# which accompanies this distribution. The full text of the license may be found at\r
7# http://opensource.org/licenses/bsd-license.php\r
8#\r
9# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
10# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
11#\r
12# Module Name:\r
13#\r
14# LShiftU64.asm\r
15#\r
16# Abstract:\r
17#\r
18# 64-bit left shift function for IA-32\r
19#\r
20#------------------------------------------------------------------------------\r
21\r
22#include <EdkIIGlueBase.h>\r
23\r
24.globl ASM_PFX(InternalMathLShiftU64)\r
25\r
26#------------------------------------------------------------------------------\r
27# UINT64\r
28# EFIAPI\r
29# InternalMathLShiftU64 (\r
30# IN UINT64 Operand,\r
31# IN UINTN Count\r
32# );\r
33#------------------------------------------------------------------------------\r
34ASM_PFX(InternalMathLShiftU64):\r
35 movb 12(%esp), %cl\r
36 xorl %eax, %eax\r
37 movl 4(%esp), %edx\r
38 testb $32, %cl\r
39 cmovz %edx, %eax\r
40 cmovz 0x8(%esp), %edx\r
41 shld %cl, %eax, %edx\r
42 shl %cl, %eax\r
43 ret\r