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git.proxmox.com Git - mirror_edk2.git/blob - EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/BaseLib/x86FxRestore.c
3 Copyright (c) 2004 - 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
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.
19 IA-32/x64 specific functions.
23 #include "BaseLibInternals.h"
26 Restores the current floating point/SSE/SSE2 context from a buffer.
28 Restores the current floating point/SSE/SSE2 state from the buffer specified
29 by Buffer. Buffer must be aligned on a 16-byte boundary. This function is
30 only available on IA-32 and X64.
32 If Buffer is NULL, then ASSERT().
33 If Buffer is not aligned on a 16-byte boundary, then ASSERT().
34 If Buffer was not saved with AsmFxSave(), then ASSERT().
36 @param Buffer Pointer to a buffer to save the floating point/SSE/SSE2 context.
42 IN CONST IA32_FX_BUFFER
*Buffer
45 ASSERT (Buffer
!= NULL
);
46 ASSERT (((UINTN
)Buffer
& 0xf) == 0);
49 // Check the flag recorded by AsmFxSave()
51 ASSERT (*(UINT32
*) (&Buffer
[sizeof (IA32_FX_BUFFER
) - 4]) == 0xAA5555AA);
53 InternalX86FxRestore (Buffer
);