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43 lines
1014 B
C
43 lines
1014 B
C
/** @file
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IA-32/x64 AsmFxSave()
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Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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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->Buffer[sizeof (Buffer->Buffer) - 4]) = 0xAA5555AA;
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}
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