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878ddf1f | 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 | # ARShiftU64.asm\r | |
15 | #\r | |
16 | # Abstract:\r | |
17 | #\r | |
18 | # 64-bit arithmetic right shift function for IA-32\r | |
19 | #\r | |
20 | #------------------------------------------------------------------------------\r | |
21 | \r | |
22 | \r | |
23 | \r | |
24 | \r | |
25 | \r | |
26 | .global _ARShiftU64\r | |
27 | _ARShiftU64: \r | |
28 | movb 12(%esp),%cl\r | |
29 | movl 8(%esp),%eax\r | |
30 | cltd\r | |
31 | testb $32,%cl\r | |
32 | # MISMATCH: " cmovz edx, eax"\r | |
33 | cmovz %eax, %edx\r | |
34 | # MISMATCH: " cmovz eax, [esp + 4]"\r | |
35 | cmovz 4(%esp), %eax\r | |
36 | shrdl %cl,%edx,%eax\r | |
37 | sar %cl,%edx\r | |
38 | ret\r | |
39 | \r | |
40 | \r | |
41 | \r |