diff options
Diffstat (limited to 'EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Cpu.c')
-rw-r--r-- | EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Cpu.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Cpu.c b/EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Cpu.c new file mode 100644 index 0000000..79d0739 --- /dev/null +++ b/EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Cpu.c @@ -0,0 +1,75 @@ +/*++ + +Copyright (c) 2004 - 2006, Intel Corporation +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 + +Abstract: + + Base Library CPU Functions for all architectures. + +--*/ + +#include "BaseLibInternal.h" + +/** + 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; +} |