[mirror_edk2.git] / MdePkg / Library / BaseLib / X86FxSave.c

/** @file\r
  IA-32/x64 AsmFxSave()\r
\r
  Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include "BaseLibInternals.h"\r
\r
/**\r
  Save the current floating point/SSE/SSE2 context to a buffer.\r
\r
  Saves the current floating point/SSE/SSE2 state to the buffer specified by\r
  Buffer. Buffer must be aligned on a 16-byte boundary. This function is only\r
  available on IA-32 and x64.\r
\r
  If Buffer is NULL, then ASSERT().\r
  If Buffer is not aligned on a 16-byte boundary, then ASSERT().\r
\r
  @param  Buffer  A pointer to a buffer to save the floating point/SSE/SSE2 context.\r
\r
**/\r
VOID\r
EFIAPI\r
AsmFxSave (\r
  OUT     IA32_FX_BUFFER  *Buffer\r
  )\r
{\r
  ASSERT (Buffer != NULL);\r
  ASSERT (0 == ((UINTN)Buffer & 0xf));\r
\r
  InternalX86FxSave (Buffer);\r
\r
  //\r
  // Mark one flag at end of Buffer, it will be check by AsmFxRestor()\r
  //\r
  *(UINT32 *)(&Buffer->Buffer[sizeof (Buffer->Buffer) - 4]) = 0xAA5555AA;\r
}\r
Commit	Line	Data
	1	/** @file\r
	2	IA-32/x64 AsmFxSave()\r
	3	\r
	4	Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>\r
	5	SPDX-License-Identifier: BSD-2-Clause-Patent\r
	6	\r
	7	**/\r
	8	\r
	9	#include "BaseLibInternals.h"\r
	10	\r
	11	/**\r
	12	Save the current floating point/SSE/SSE2 context to a buffer.\r
	13	\r
	14	Saves the current floating point/SSE/SSE2 state to the buffer specified by\r
	15	Buffer. Buffer must be aligned on a 16-byte boundary. This function is only\r
	16	available on IA-32 and x64.\r
	17	\r
	18	If Buffer is NULL, then ASSERT().\r
	19	If Buffer is not aligned on a 16-byte boundary, then ASSERT().\r
	20	\r
	21	@param Buffer A pointer to a buffer to save the floating point/SSE/SSE2 context.\r
	22	\r
	23	**/\r
	24	VOID\r
	25	EFIAPI\r
	26	AsmFxSave (\r
	27	OUT IA32_FX_BUFFER *Buffer\r
	28	)\r
	29	{\r
	30	ASSERT (Buffer != NULL);\r
	31	ASSERT (0 == ((UINTN)Buffer & 0xf));\r
	32	\r
	33	InternalX86FxSave (Buffer);\r
	34	\r
	35	//\r
	36	// Mark one flag at end of Buffer, it will be check by AsmFxRestor()\r
	37	//\r
	38	(UINT32 )(&Buffer->Buffer[sizeof (Buffer->Buffer) - 4]) = 0xAA5555AA;\r
	39	}\r