5fc3b5d6c8
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10683 6f19259b-4bc3-4df7-8a09-765794883524
49 lines
1.4 KiB
C
49 lines
1.4 KiB
C
/** @file
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IA-32/x64 AsmFxSave()
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Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
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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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**/
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#include "BaseLibInternals.h"
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/**
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Save the current floating point/SSE/SSE2 context to a buffer.
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Saves the current floating point/SSE/SSE2 state to the buffer specified by
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Buffer. Buffer must be aligned on a 16-byte boundary. This function is only
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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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@param Buffer A 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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AsmFxSave (
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OUT IA32_FX_BUFFER *Buffer
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)
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{
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ASSERT (Buffer != NULL);
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ASSERT (0 == ((UINTN)Buffer & 0xf));
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InternalX86FxSave (Buffer);
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//
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// Mark one flag at end of Buffer, it will be check by AsmFxRestor()
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//
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*(UINT32 *) (&Buffer[sizeof (IA32_FX_BUFFER) - 4]) = 0xAA5555AA;
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}
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