mirror of https://github.com/acidanthera/audk.git
54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
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/** @file
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IA-32/x64 AsmFxRestore()
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Copyright (c) 2006, Intel Corporation<BR>
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name: x86FxRestore.c
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**/
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//
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// Include common header file for this module.
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//
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#include "CommonHeader.h"
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#include "BaseLibInternals.h"
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/**
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Restores the current floating point/SSE/SSE2 context from a buffer.
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Restores the current floating point/SSE/SSE2 state from the buffer specified
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by Buffer. Buffer must be aligned on a 16-byte boundary. This function is
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only available on IA-32 and X64.
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If Buffer is NULL, then ASSERT().
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If Buffer is not aligned on a 16-byte boundary, then ASSERT().
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If Buffer was not saved with AsmFxSave(), then ASSERT().
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@param Buffer Pointer to a buffer to save the floating point/SSE/SSE2 context.
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**/
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VOID
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EFIAPI
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AsmFxRestore (
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IN CONST IA32_FX_BUFFER *Buffer
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)
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{
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ASSERT (Buffer != NULL);
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ASSERT (((UINTN)Buffer & 0xf) == 0);
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//
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// Check the flag recorded by AsmFxSave()
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//
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ASSERT (*(UINT32 *) (&Buffer[sizeof (IA32_FX_BUFFER) - 4]) == 0xAA5555AA);
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InternalX86FxRestore (Buffer);
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}
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