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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 | # InterlockedCompareExchange32.Asm\r | |
15 | #\r | |
16 | # Abstract:\r | |
17 | #\r | |
18 | # InterlockedCompareExchange32 function\r | |
19 | #\r | |
20 | # Notes:\r | |
21 | #\r | |
22 | #------------------------------------------------------------------------------\r | |
23 | \r | |
24 | \r | |
25 | \r | |
26 | \r | |
27 | \r | |
28 | #------------------------------------------------------------------------------\r | |
29 | # VOID *\r | |
30 | # EFIAPI\r | |
31 | # InterlockedCompareExchangePointer (\r | |
32 | # IN VOID **Value,\r | |
33 | # IN VOID *CompareValue,\r | |
34 | # IN VOID *ExchangeValue\r | |
35 | # );\r | |
36 | #------------------------------------------------------------------------------\r | |
37 | .global _InterlockedCompareExchangePointer\r | |
38 | _InterlockedCompareExchangePointer: \r | |
39 | #\r | |
40 | # InterlockedCompareExchangePointer() shares the same code as\r | |
41 | # InterlockedCompareExchange32() on IA32 and thus no code inside this\r | |
42 | # function\r | |
43 | #\r | |
44 | \r | |
45 | \r | |
46 | #------------------------------------------------------------------------------\r | |
47 | # UINT32\r | |
48 | # EFIAPI\r | |
49 | # InterlockedCompareExchange32 (\r | |
50 | # IN UINT32 *Value,\r | |
51 | # IN UINT32 CompareValue,\r | |
52 | # IN UINT32 ExchangeValue\r | |
53 | # );\r | |
54 | #------------------------------------------------------------------------------\r | |
55 | .global _InterlockedCompareExchange32\r | |
56 | _InterlockedCompareExchange32: \r | |
57 | movl 4(%esp),%ecx\r | |
58 | movl 8(%esp),%eax\r | |
59 | movl 12(%esp),%edx\r | |
60 | lock cmpxchgl %edx,(%ecx)\r | |
61 | ret\r | |
62 | \r | |
63 | \r | |
64 | \r |