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1 | #------------------------------------------------------------------------------\r |
2 | #\r |
3 | # Copyright (c) 2006, Intel Corporation\r |
4 | # All rights reserved. This program and the accompanying materials\r |
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 | # RShiftU64.asm\r |
15 | #\r |
16 | # Abstract:\r |
17 | #\r |
18 | # 64-bit logical right shift function for IA-32\r |
19 | #\r |
20 | #------------------------------------------------------------------------------\r |
21 | \r |
22 | \r |
23 | \r |
24 | \r |
25 | \r |
26 | .global _RShiftU64\r |
27 | _RShiftU64: \r |
28 | movb 12(%esp),%cl\r |
29 | xorl %edx,%edx\r |
30 | movl 8(%esp),%eax\r |
31 | testb $32,%cl\r |
32 | cmovz %eax, %edx\r |
33 | cmovz 4(%esp), %eax\r |
34 | shrdl %cl,%edx,%eax\r |
35 | shrl %cl,%edx\r |
36 | ret\r |
37 | \r |
38 | \r |
39 | \r |