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/** @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>
#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 ();
}
/**
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);
}
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