audk/EdkCompatibilityPkg/Foundation/Library/Pei/PeiLib/Ipf/HwAccess.s

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//++
// Copyright (c) 2007, 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:
//
// HWAccess.s
//
// Abstract:
//
// Contains an implementation of Read/Write Kr7 for the Itanium-based architecture.
//
//
//
// Revision History:
//
//--
.file "HWAccess.s"
#include "IpfMacro.i"
//----------------------------------------------------------------------------------
//++
//VOID
//AsmWriteKr7 (
// UINT64
// );
//
// This routine saves the given input value into the kernel register 7
//
// Arguments :
//
// On Entry : 64 bit value to be saved.
//
// Return Value: None
//
//--
//----------------------------------------------------------------------------------
PROCEDURE_ENTRY (AsmWriteKr7)
NESTED_SETUP (1,2,0,0)
mov ar.k7 = in0;;
NESTED_RETURN
PROCEDURE_EXIT (AsmWriteKr7)
//---------------------------------------------------------------------------------
//++
//UINT64
//AsmReadKr7 (
// VOID
// );
//
// This routine returns the value of the kernel register 7
//
// Arguments :
//
// On Entry : None
//
// Return Value: 64bit Value of the register.
//
//--
//----------------------------------------------------------------------------------
PROCEDURE_ENTRY (AsmReadKr7)
NESTED_SETUP (0,2,0,0)
mov r8 = ar.k7;;
NESTED_RETURN
PROCEDURE_EXIT (AsmReadKr7)
//----------------------------------------------------------------------------------