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44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
/** @file
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IA-32/x64 AsmFxRestore()
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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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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 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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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 (0 == ((UINTN)Buffer & 0xf));
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//
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// Check the flag recorded by AsmFxSave()
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//
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ASSERT (0xAA5555AA == *(UINT32 *) (&Buffer->Buffer[sizeof (Buffer->Buffer) - 4]));
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InternalX86FxRestore (Buffer);
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}
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