1e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff/** @file 2e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff Base Library CPU Functions for all architectures. 3e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff 4127010dd965de70796f468fc0e2ab5510732048amyronporter Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR> 5bb817c56c51fabe92915fe30b168b4833cb2aed9hhtian This program and the accompanying materials 6e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff are licensed and made available under the terms and conditions of the BSD License 7e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff which accompanies this distribution. The full text of the license may be found at 8127010dd965de70796f468fc0e2ab5510732048amyronporter http://opensource.org/licenses/bsd-license.php. 9e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff 10e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 11e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 12e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff 13e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff**/ 14e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff 1547fc17d8a96970bc36dd7b9d4567c2c2ac102c78qhuang#include "BaseLibInternals.h" 16f734a10ab104f1072f94cab66a5489e0fd8fce8aAJFISH 17e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff 18e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff/** 19e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff Disables CPU interrupts and returns the interrupt state prior to the disable 20e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff operation. 21e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff 22e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff @retval TRUE CPU interrupts were enabled on entry to this call. 23e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff @retval FALSE CPU interrupts were disabled on entry to this call. 24e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff 25e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff**/ 26e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeffBOOLEAN 27e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeffEFIAPI 28e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeffSaveAndDisableInterrupts ( 29e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff VOID 30e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff ) 31e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff{ 32e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff BOOLEAN InterruptState; 33e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff 34e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff InterruptState = GetInterruptState (); 35e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff DisableInterrupts (); 36e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff return InterruptState; 37e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff} 38e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff 39e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff/** 40e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff Set the current CPU interrupt state. 41e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff 42e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff Sets the current CPU interrupt state to the state specified by 43e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff InterruptState. If InterruptState is TRUE, then interrupts are enabled. If 44e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff InterruptState is FALSE, then interrupts are disabled. InterruptState is 45e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff returned. 46e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff 47127010dd965de70796f468fc0e2ab5510732048amyronporter @param InterruptState TRUE if interrupts should be enabled. FALSE if 48e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff interrupts should be disabled. 49e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff 509aa049d9717f1260426918eab2d5986e838a8754gikidy @return InterruptState 51e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff 52e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff**/ 53e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeffBOOLEAN 54e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeffEFIAPI 55e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeffSetInterruptState ( 56e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff IN BOOLEAN InterruptState 57e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff ) 58e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff{ 59e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff if (InterruptState) { 60e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff EnableInterrupts (); 61e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff } else { 62e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff DisableInterrupts (); 63e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff } 64e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff return InterruptState; 65e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8vanjeff} 66