[mirror_edk2.git] / MdePkg / Library / BaseLib / X86GetInterruptState.c

/** @file\r
  IA-32/x64 GetInterruptState()\r
\r
  Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include "BaseLibInternals.h"\r
\r
/**\r
  Retrieves the current CPU interrupt state.\r
\r
  Returns TRUE is interrupts are currently enabled. Otherwise\r
  returns FALSE.\r
\r
  @retval TRUE  CPU interrupts are enabled.\r
  @retval FALSE CPU interrupts are disabled.\r
\r
**/\r
BOOLEAN\r
EFIAPI\r
GetInterruptState (\r
  VOID\r
  )\r
{\r
  IA32_EFLAGS32  EFlags;\r
\r
  EFlags.UintN = AsmReadEflags ();\r
  return (BOOLEAN)(1 == EFlags.Bits.IF);\r
}\r
Commit	Line	Data
	1	/** @file\r
	2	IA-32/x64 GetInterruptState()\r
	3	\r
	4	Copyright (c) 2006 - 2008, 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	Retrieves the current CPU interrupt state.\r
	13	\r
	14	Returns TRUE is interrupts are currently enabled. Otherwise\r
	15	returns FALSE.\r
	16	\r
	17	@retval TRUE CPU interrupts are enabled.\r
	18	@retval FALSE CPU interrupts are disabled.\r
	19	\r
	20	**/\r
	21	BOOLEAN\r
	22	EFIAPI\r
	23	GetInterruptState (\r
	24	VOID\r
	25	)\r
	26	{\r
	27	IA32_EFLAGS32 EFlags;\r
	28	\r
	29	EFlags.UintN = AsmReadEflags ();\r
	30	return (BOOLEAN)(1 == EFlags.Bits.IF);\r
	31	}\r