[mirror_edk2.git] / MdePkg / Library / BaseLib / X86SpeculationBarrier.c

/** @file\r
  SpeculationBarrier() function for IA32 and x64.\r
\r
  Copyright (C) 2018, Intel Corporation. All rights reserved.<BR>\r
\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include <Library/BaseLib.h>\r
\r
/**\r
  Uses as a barrier to stop speculative execution.\r
\r
  Ensures that no later instruction will execute speculatively, until all prior\r
  instructions have completed.\r
\r
**/\r
VOID\r
EFIAPI\r
SpeculationBarrier (\r
  VOID\r
  )\r
{\r
  AsmLfence ();\r
}\r
Commit	Line	Data
d9f1cac5 HW	1	/** @file\r
	2	SpeculationBarrier() function for IA32 and x64.\r
	3	\r
	4	Copyright (C) 2018, Intel Corporation. All rights reserved.<BR>\r
	5	\r
9344f092	6	SPDX-License-Identifier: BSD-2-Clause-Patent\r
d9f1cac5 HW	7	\r
	8	**/\r
	9	\r
	10	#include <Library/BaseLib.h>\r
	11	\r
	12	/**\r
	13	Uses as a barrier to stop speculative execution.\r
	14	\r
	15	Ensures that no later instruction will execute speculatively, until all prior\r
	16	instructions have completed.\r
	17	\r
	18	**/\r
	19	VOID\r
	20	EFIAPI\r
	21	SpeculationBarrier (\r
	22	VOID\r
	23	)\r
	24	{\r
	25	AsmLfence ();\r
	26	}\r