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[mirror_edk2.git] / MdePkg / Library / BaseLib / x86GetInterruptState.c

/** @file\r
  IA-32/x64 GetInterruptState()\r
\r
  Copyright (c) 2006, Intel Corporation<BR>\r
  All rights reserved. This program and the accompanying materials\r
  are licensed and made available under the terms and conditions of the BSD License\r
  which accompanies this distribution.  The full text of the license may be found at\r
  http://opensource.org/licenses/bsd-license.php\r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
\r
#include <BaseLibInternals.h>\r
\r
\r
/**\r
  Retrieves the current CPU interrupt state.\r
\r
  Retrieves the current CPU interrupt state. Returns TRUE is interrupts are\r
  currently enabled. Otherwise 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
\r
\r