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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 | x86FxSave.c\r | |
16 | \r | |
17 | Abstract: \r | |
18 | \r | |
19 | IA-32/x64 specific functions.\r | |
20 | \r | |
21 | --*/\r | |
22 | \r | |
23 | #include "BaseLibInternal.h"\r | |
24 | \r | |
25 | /**\r | |
26 | Save the current floating point/SSE/SSE2 context to a buffer.\r | |
27 | \r | |
28 | Saves the current floating point/SSE/SSE2 state to the buffer specified by\r | |
29 | Buffer. Buffer must be aligned on a 16-byte boundary. This function is only\r | |
30 | 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 | \r | |
35 | @param Buffer Pointer to a buffer to save the floating point/SSE/SSE2 context.\r | |
36 | \r | |
37 | **/\r | |
38 | VOID\r | |
39 | EFIAPI\r | |
40 | AsmFxSave (\r | |
41 | OUT IA32_FX_BUFFER *Buffer\r | |
42 | )\r | |
43 | {\r | |
44 | ASSERT (Buffer != NULL);\r | |
45 | ASSERT (((UINTN)Buffer & 0xf) == 0);\r | |
46 | \r | |
47 | InternalX86FxSave (Buffer);\r | |
48 | \r | |
49 | //\r | |
50 | // Mark one flag at end of Buffer, it will be check by AsmFxRestor()\r | |
51 | //\r | |
52 | *(UINT32 *) (&Buffer[sizeof (IA32_FX_BUFFER) - 4]) = 0xAA5555AA;\r | |
53 | }\r |