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7962c48c | 1 | #------------------------------------------------------------------------------ |
2 | # | |
3 | # Copyright (c) 2006, Intel Corporation | |
4 | # All rights reserved. This program and the accompanying materials | |
5 | # are licensed and made available under the terms and conditions of the BSD License | |
6 | # which accompanies this distribution. The full text of the license may be found at | |
7 | # http://opensource.org/licenses/bsd-license.php | |
8 | # | |
9 | # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
10 | # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
11 | # | |
12 | # Module Name: | |
13 | # | |
14 | # LShiftU64.asm | |
15 | # | |
16 | # Abstract: | |
17 | # | |
18 | # 64-bit left shift function for IA-32 | |
19 | # | |
20 | #------------------------------------------------------------------------------ | |
21 | ||
22 | .686: | |
23 | #.MODEL flat,C | |
24 | .code: | |
25 | ||
26 | .global _InternalMathLShiftU64 | |
27 | _InternalMathLShiftU64: | |
28 | movb 12(%esp), %cl | |
29 | xorl %eax, %eax | |
30 | movl 4(%esp), %edx | |
31 | testb $32, %cl | |
32 | cmovz %edx, %eax | |
33 | cmovz 0x8(%esp), %edx | |
34 | shld %cl,%eax,%edx | |
35 | shl %cl, %eax | |
36 | ret |