/** @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. | |
**/ | |
// | |
// Include common header file for this module. | |
// | |
#include <BaseLibInternals.h> | |
/** | |
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 (); | |
} | |
/** | |
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 (); | |
} | |
/** | |
Places the CPU in a sleep state until an interrupt is received. | |
Places the CPU in a sleep state until an interrupt is received. If interrupts | |
are disabled prior to calling this function, then the CPU will be placed in a | |
sleep state indefinitely. | |
**/ | |
VOID | |
EFIAPI | |
CpuSleep ( | |
VOID | |
) | |
{ | |
PalCallStatic (NULL, 29, 0, 0, 0); | |
} |