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git.proxmox.com Git - mirror_edk2.git/blob - x86FxSave.c
2ccbe4894b2db65eb14382bfa082fa44756e1de8
4 Copyright (c) 2006, Intel Corporation<BR>
5 All rights reserved. This program and the accompanying materials
6 are licensed and made available under the terms and conditions of the BSD License
7 which accompanies this distribution. The full text of the license may be found at
8 http://opensource.org/licenses/bsd-license.php
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
13 Module Name: x86FxSave.c
18 // Include common header file for this module.
20 #include "CommonHeader.h"
22 #include "BaseLibInternals.h"
25 Save the current floating point/SSE/SSE2 context to a buffer.
27 Saves the current floating point/SSE/SSE2 state to the buffer specified by
28 Buffer. Buffer must be aligned on a 16-byte boundary. This function is only
29 available on IA-32 and X64.
31 If Buffer is NULL, then ASSERT().
32 If Buffer is not aligned on a 16-byte boundary, then ASSERT().
34 @param Buffer Pointer to a buffer to save the floating point/SSE/SSE2 context.
40 OUT IA32_FX_BUFFER
*Buffer
43 ASSERT (Buffer
!= NULL
);
44 ASSERT (((UINTN
)Buffer
& 0xf) == 0);
46 InternalX86FxSave (Buffer
);
49 // Mark one flag at end of Buffer, it will be check by AsmFxRestor()
51 *(UINT32
*) (&Buffer
[sizeof (IA32_FX_BUFFER
) - 4]) = 0xAA5555AA;