[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
e1f414b6	1	/** @file\r
	2	IA-32/x64 GetInterruptState()\r
	3	\r
bb817c56	4	Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r
9344f092	5	SPDX-License-Identifier: BSD-2-Clause-Patent\r
e1f414b6	6	\r
e1f414b6	7	**/\r
e1f414b6	8	\r
47fc17d8	9	#include "BaseLibInternals.h"\r
f734a10a	10	\r
e1f414b6	11	/**\r
	12	Retrieves the current CPU interrupt state.\r
	13	\r
9aa049d9	14	Returns TRUE is interrupts are currently enabled. Otherwise\r
9aa049d9	15	returns FALSE.\r
e1f414b6	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
2f88bd3a	27	IA32_EFLAGS32 EFlags;\r
e1f414b6	28	\r
e1f414b6	29	EFlags.UintN = AsmReadEflags ();\r
38bbd3d9	30	return (BOOLEAN)(1 == EFlags.Bits.IF);\r
e1f414b6	31	}\r