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git.proxmox.com Git - mirror_edk2.git/blob - MdePkg/Library/BaseLib/X86FxRestore.c
2 IA-32/x64 AsmFxRestore()
4 Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
5 SPDX-License-Identifier: BSD-2-Clause-Patent
12 #include "BaseLibInternals.h"
15 Restores the current floating point/SSE/SSE2 context from a buffer.
17 Restores the current floating point/SSE/SSE2 state from the buffer specified
18 by Buffer. Buffer must be aligned on a 16-byte boundary. This function is
19 only available on IA-32 and x64.
21 If Buffer is NULL, then ASSERT().
22 If Buffer is not aligned on a 16-byte boundary, then ASSERT().
23 If Buffer was not saved with AsmFxSave(), then ASSERT().
25 @param Buffer A pointer to a buffer to save the floating point/SSE/SSE2 context.
31 IN CONST IA32_FX_BUFFER
*Buffer
34 ASSERT (Buffer
!= NULL
);
35 ASSERT (0 == ((UINTN
)Buffer
& 0xf));
38 // Check the flag recorded by AsmFxSave()
40 ASSERT (0xAA5555AA == *(UINT32
*) (&Buffer
->Buffer
[sizeof (Buffer
->Buffer
) - 4]));
42 InternalX86FxRestore (Buffer
);