/** @file | |
Base Library CPU functions for Itanium | |
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. | |
**/ | |
//void __mfa (void); | |
#pragma intrinsic (_enable) | |
#pragma intrinsic (_disable) | |
#pragma intrinsic (__break) | |
#pragma intrinsic (__mfa) | |
/** | |
Generates a breakpoint on the CPU. | |
Generates a breakpoint on the CPU. The breakpoint must be implemented such | |
that code can resume normal execution after the breakpoint. | |
**/ | |
VOID | |
EFIAPI | |
CpuBreakpoint ( | |
VOID | |
) | |
{ | |
__break (0); | |
} | |
/** | |
Used to serialize load and store operations. | |
All loads and stores that proceed calls to this function are guaranteed to be | |
globally visible when this function returns. | |
**/ | |
VOID | |
EFIAPI | |
MemoryFence ( | |
VOID | |
) | |
{ | |
__mfa (); | |
} | |
/** | |
Disables CPU interrupts. | |
Disables CPU interrupts. | |
**/ | |
VOID | |
EFIAPI | |
DisableInterrupts ( | |
VOID | |
) | |
{ | |
_disable (); | |
} | |
/** | |
Enables CPU interrupts. | |
Enables CPU interrupts. | |
**/ | |
VOID | |
EFIAPI | |
EnableInterrupts ( | |
VOID | |
) | |
{ | |
_enable (); | |
} | |
/** | |
Retrieves the current CPU interrupt state. | |
Retrieves the current CPU interrupt state. Returns TRUE is interrupts are | |
currently enabled. Otherwise returns FALSE. | |
@retval TRUE CPU interrupts are enabled. | |
@retval FALSE CPU interrupts are disabled. | |
**/ | |
BOOLEAN | |
EFIAPI | |
GetInterruptState ( | |
VOID | |
) | |
{ | |
return FALSE; | |
} | |
/** | |
Enables CPU interrupts for the smallest window required to capture any | |
pending interrupts. | |
Enables CPU interrupts for the smallest window required to capture any | |
pending interrupts. | |
**/ | |
VOID | |
EFIAPI | |
EnableDisableInterrupts ( | |
VOID | |
) | |
{ | |
EnableInterrupts (); | |
DisableInterrupts (); | |
} |