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3eb9473e 1/*++\r
2\r
2c7e5c2f
HT
3Copyright (c) 2004 - 2006, Intel Corporation. All rights reserved.<BR>\r
4This program and the accompanying materials \r
3eb9473e 5are licensed and made available under the terms and conditions of the BSD License \r
6which accompanies this distribution. The full text of the license may be found at \r
7http://opensource.org/licenses/bsd-license.php \r
8 \r
9THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
10WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
11\r
12\r
13Module Name:\r
14\r
15 x86FxRestore.c\r
16 \r
17Abstract: \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
39VOID\r
40EFIAPI\r
41AsmFxRestore (\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