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1. Remove #ifdef _MSC_EXTENSION_ from all source files
[mirror_edk2.git] / MdePkg / Library / BaseLib / Ia32 / ARShiftU64.c
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23086ba8 1/** @file\r
2 64-bit arithmetic right shift function for IA-32.\r
3\r
e5f461a8 4 Copyright (c) 2006 - 2007, Intel Corporation<BR>\r
23086ba8 5 All rights reserved. This program and the accompanying materials\r
6 are licensed and made available under the terms and conditions of the BSD License\r
7 which accompanies this distribution. The full text of the license may be found at\r
8 http://opensource.org/licenses/bsd-license.php\r
9\r
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
12\r
13**/\r
14\r
23086ba8 15UINT64\r
16EFIAPI\r
17InternalMathARShiftU64 (\r
18 IN UINT64 Operand,\r
19 IN UINTN Count\r
20 )\r
21{\r
22 _asm {\r
23 mov cl, byte ptr [Count]\r
24 mov eax, dword ptr [Operand + 4]\r
25 cdq\r
26 test cl, 32\r
27 cmovz edx, eax\r
28 cmovz eax, dword ptr [Operand + 0]\r
29 shrd eax, edx, cl\r
30 sar edx, cl\r
31 }\r
32}\r
33\r