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/// @file
/// IPF specific Global Control Registers accessing functions
///
/// Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
/// 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: AccessGcr.s
///
///
//---------------------------------------------------------------------------------
//++
// AsmReadDcr
//
// This routine is used to Read the value of Default Control Register (DCR).
//
// Arguments :
//
// On Entry :
//
// Return Value: The current value of DCR.
//
//--
//----------------------------------------------------------------------------------
.text
.type AsmReadDcr, @function
.proc AsmReadDcr
AsmReadDcr::
mov r8 = cr.dcr;;
br.ret.dpnt b0;;
.endp AsmReadDcr
//---------------------------------------------------------------------------------
//++
// AsmWriteDcr
//
// This routine is used to write the value to Default Control Register (DCR).
//
// Arguments :
//
// On Entry : The value need to be written to DCR
//
// Return Value: The value written to DCR.
//
//--
//----------------------------------------------------------------------------------
.text
.type AsmWriteDcr, @function
.proc AsmWriteDcr
.regstk 1, 0, 0, 0
AsmWriteDcr::
mov cr.dcr = in0
mov r8 = in0;;
srlz.i;;
srlz.d;;
br.ret.dpnt b0;;
.endp AsmWriteDcr
//---------------------------------------------------------------------------------
//++
// AsmReadItc
//
// This routine is used to Read the value of Interval Timer Counter Register (ITC).
//
// Arguments :
//
// On Entry :
//
// Return Value: The current value of ITC.
//
//--
//----------------------------------------------------------------------------------
.text
.type AsmReadItc, @function
.proc AsmReadItc
AsmReadItc::
mov r8 = ar.itc;;
br.ret.dpnt b0;;
.endp AsmReadItc
//---------------------------------------------------------------------------------
//++
// AsmWriteItc
//
// This routine is used to write the value to Interval Timer Counter Register (ITC).
//
// Arguments :
//
// On Entry : The value need to be written to the ITC
//
// Return Value: The value written to the ITC.
//
//--
//----------------------------------------------------------------------------------
.text
.type AsmWriteItc, @function
.proc AsmWriteItc
.regstk 1, 0, 0, 0
AsmWriteItc::
mov ar.itc = in0
mov r8 = in0;;
br.ret.dpnt b0;;
.endp AsmWriteItc
//---------------------------------------------------------------------------------
//++
// AsmReadItm
//
// This routine is used to Read the value of Interval Timer Match Register (ITM).
//
// Arguments :
//
// On Entry :
//
// Return Value: The current value of ITM.
//
//--
//----------------------------------------------------------------------------------
.text
.type AsmReadItm, @function
.proc AsmReadItm
AsmReadItm::
mov r8 = cr.itm;;
br.ret.dpnt b0;;
.endp AsmReadItm
//---------------------------------------------------------------------------------
//++
// AsmWriteItm
//
// This routine is used to write the value to Interval Timer Match Register (ITM).
//
// Arguments :
//
// On Entry : The value need to be written to ITM
//
// Return Value: The value written to ITM.
//
//--
//----------------------------------------------------------------------------------
.text
.type AsmWriteItm, @function
.proc AsmWriteItm
.regstk 1, 0, 0, 0
AsmWriteItm::
mov cr.itm = in0
mov r8 = in0;;
srlz.d;
br.ret.dpnt b0;;
.endp AsmWriteItm
//---------------------------------------------------------------------------------
//++
// AsmReadIva
//
// This routine is used to read the value of Interruption Vector Address Register (IVA).
//
// Arguments :
//
// On Entry :
//
// Return Value: The current value of IVA.
//
//--
//----------------------------------------------------------------------------------
.text
.type AsmReadIva, @function
.proc AsmReadIva
AsmReadIva::
mov r8 = cr.iva;;
br.ret.dpnt b0;;
.endp AsmReadIva
//---------------------------------------------------------------------------------
//++
// AsmWriteIva
//
// This routine is used to write the value to Interruption Vector Address Register (IVA).
//
// Arguments :
//
// On Entry : The value need to be written to IVA
//
// Return Value: The value written to IVA.
//
//--
//----------------------------------------------------------------------------------
.text
.type AsmWriteIva, @function
.proc AsmWriteIva
.regstk 1, 3, 0, 0
AsmWriteIva::
alloc loc1=ar.pfs,1,4,0,0 ;;
mov loc2 = psr
rsm 0x6000 // Make sure interrupts are masked
mov cr.iva = in0
srlz.i;;
mov psr.l = loc2;;
srlz.i;;
srlz.d;;
mov ar.pfs=loc1 ;;
mov r8 = in0;;
br.ret.dpnt b0;;
.endp AsmWriteIva
//---------------------------------------------------------------------------------
//++
// AsmReadPta
//
// This routine is used to read the value of Page Table Address Register (PTA).
//
// Arguments :
//
// On Entry :
//
// Return Value: The current value of PTA.
//
//--
//----------------------------------------------------------------------------------
.text
.type AsmReadPta, @function
.proc AsmReadPta
AsmReadPta::
mov r8 = cr.pta;;
br.ret.dpnt b0;;
.endp AsmReadPta
//---------------------------------------------------------------------------------
//++
// AsmWritePta
//
// This routine is used to write the value to Page Table Address Register (PTA)).
//
// Arguments :
//
// On Entry : The value need to be written to PTA
//
// Return Value: The value written to PTA.
//
//--
//----------------------------------------------------------------------------------
.text
.type AsmWritePta, @function
.proc AsmWritePta
.regstk 1, 0, 0, 0
AsmWritePta::
mov cr.pta = in0
mov r8 = in0;;
srlz.i;;
srlz.d;;
br.ret.dpnt b0;;
.endp AsmWritePta
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