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3eb9473e | 1 | /*++\r |
2 | \r | |
3 | Copyright (c) 2004 - 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 | \r | |
13 | Module Name:\r | |
14 | \r | |
15 | x86FxRestore.c\r | |
16 | \r | |
17 | Abstract: \r | |
18 | \r | |
19 | IA-32/x64 specific functions.\r | |
20 | \r | |
21 | --*/\r | |
22 | \r | |
c7f33ca4 | 23 | #include "BaseLibInternals.h"\r |
3eb9473e | 24 | \r |
25 | /**\r | |
26 | Restores the current floating point/SSE/SSE2 context from a buffer.\r | |
27 | \r | |
28 | Restores the current floating point/SSE/SSE2 state from the buffer specified\r | |
29 | by Buffer. Buffer must be aligned on a 16-byte boundary. This function is\r | |
30 | only available on IA-32 and X64.\r | |
31 | \r | |
32 | If Buffer is NULL, then ASSERT().\r | |
33 | If Buffer is not aligned on a 16-byte boundary, then ASSERT().\r | |
34 | If Buffer was not saved with AsmFxSave(), then ASSERT().\r | |
35 | \r | |
36 | @param Buffer Pointer to a buffer to save the floating point/SSE/SSE2 context.\r | |
37 | \r | |
38 | **/\r | |
39 | VOID\r | |
40 | EFIAPI\r | |
41 | AsmFxRestore (\r | |
42 | IN CONST IA32_FX_BUFFER *Buffer\r | |
43 | )\r | |
44 | {\r | |
45 | ASSERT (Buffer != NULL);\r | |
46 | ASSERT (((UINTN)Buffer & 0xf) == 0);\r | |
47 | \r | |
48 | //\r | |
49 | // Check the flag recorded by AsmFxSave()\r | |
50 | //\r | |
51 | ASSERT (*(UINT32 *) (&Buffer[sizeof (IA32_FX_BUFFER) - 4]) == 0xAA5555AA);\r | |
52 | \r | |
53 | InternalX86FxRestore (Buffer);\r | |
54 | }\r |