mirror of https://github.com/acidanthera/audk.git
68 lines
1.8 KiB
C
68 lines
1.8 KiB
C
|
/** @file
|
||
|
|
Base Library CPU Functions for all architectures.
|
||
|
|
|
||
|
|
Copyright (c) 2006, Intel Corporation<BR>
|
||
|
|
All rights reserved. This program and the accompanying materials
|
||
|
|
are licensed and made available under the terms and conditions of the BSD License
|
||
|
|
which accompanies this distribution. The full text of the license may be found at
|
||
|
|
http://opensource.org/licenses/bsd-license.php
|
||
|
|
|
||
|
|
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
||
|
|
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
||
|
|
|
||
|
|
Module Name: Cpu.c
|
||
|
|
|
||
|
|
**/
|
||
|
|
|
||
|
|
/**
|
||
|
|
Disables CPU interrupts and returns the interrupt state prior to the disable
|
||
|
|
operation.
|
||
|
|
|
||
|
|
Disables CPU interrupts and returns the interrupt state prior to the disable
|
||
|
|
operation.
|
||
|
|
|
||
|
|
@retval TRUE CPU interrupts were enabled on entry to this call.
|
||
|
|
@retval FALSE CPU interrupts were disabled on entry to this call.
|
||
|
|
|
||
|
|
**/
|
||
|
|
BOOLEAN
|
||
|
|
EFIAPI
|
||
|
|
SaveAndDisableInterrupts (
|
||
|
|
VOID
|
||
|
|
)
|
||
|
|
{
|
||
|
|
BOOLEAN InterruptState;
|
||
|
|
|
||
|
|
InterruptState = GetInterruptState ();
|
||
|
|
DisableInterrupts ();
|
||
|
|
return InterruptState;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
Set the current CPU interrupt state.
|
||
|
|
|
||
|
|
Sets the current CPU interrupt state to the state specified by
|
||
|
|
InterruptState. If InterruptState is TRUE, then interrupts are enabled. If
|
||
|
|
InterruptState is FALSE, then interrupts are disabled. InterruptState is
|
||
|
|
returned.
|
||
|
|
|
||
|
|
@param InterruptState TRUE if interrupts should enabled. FALSE if
|
||
|
|
interrupts should be disabled.
|
||
|
|
|
||
|
|
@return InterruptState
|
||
|
|
|
||
|
|
**/
|
||
|
|
BOOLEAN
|
||
|
|
EFIAPI
|
||
|
|
SetInterruptState (
|
||
|
|
IN BOOLEAN InterruptState
|
||
|
|
)
|
||
|
|
{
|
||
|
|
if (InterruptState) {
|
||
|
|
EnableInterrupts ();
|
||
|
|
} else {
|
||
|
|
DisableInterrupts ();
|
||
|
|
}
|
||
|
|
return InterruptState;
|
||
|
|
}
|