mirror of https://github.com/acidanthera/audk.git
274 lines
6.7 KiB
ArmAsm
274 lines
6.7 KiB
ArmAsm
/// @file
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/// IPF specific Global Control Registers accessing functions
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///
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/// Copyright (c) 2006, Intel Corporation
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/// All rights reserved. This program and the accompanying materials
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/// are licensed and made available under the terms and conditions of the BSD License
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/// which accompanies this distribution. The full text of the license may be found at
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/// http://opensource.org/licenses/bsd-license.php
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///
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/// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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///
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/// Module Name: AccessGcr.s
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///
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///
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//---------------------------------------------------------------------------------
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//++
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// AsmReadDcr
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//
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// This routine is used to Read the value of Default Control Register (DCR).
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//
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// Arguments :
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//
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// On Entry :
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//
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// Return Value: The current value of DCR.
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//
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//--
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//----------------------------------------------------------------------------------
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.text
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.type AsmReadDcr, @function
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.proc AsmReadDcr
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AsmReadDcr::
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mov r8 = cr.dcr;;
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br.ret.dpnt b0;;
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.endp AsmReadDcr
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//---------------------------------------------------------------------------------
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//++
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// AsmWriteDcr
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//
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// This routine is used to write the value to Default Control Register (DCR).
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//
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// Arguments :
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//
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// On Entry : The value need to be written to DCR
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//
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// Return Value: The value written to DCR.
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//
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//--
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//----------------------------------------------------------------------------------
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.text
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.type AsmWriteDcr, @function
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.proc AsmWriteDcr
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.regstk 1, 0, 0, 0
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AsmWriteDcr::
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mov cr.dcr = in0
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mov r8 = in0;;
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srlz.i;;
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srlz.d;;
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br.ret.dpnt b0;;
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.endp AsmWriteDcr
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//---------------------------------------------------------------------------------
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//++
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// AsmReadItc
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//
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// This routine is used to Read the value of Interval Timer Counter Register (ITC).
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//
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// Arguments :
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//
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// On Entry :
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//
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// Return Value: The current value of ITC.
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//
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//--
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//----------------------------------------------------------------------------------
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.text
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.type AsmReadItc, @function
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.proc AsmReadItc
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AsmReadItc::
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mov r8 = ar.itc;;
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br.ret.dpnt b0;;
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.endp AsmReadItc
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//---------------------------------------------------------------------------------
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//++
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// AsmWriteItc
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//
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// This routine is used to write the value to Interval Timer Counter Register (ITC).
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//
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// Arguments :
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//
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// On Entry : The value need to be written to the ITC
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//
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// Return Value: The value written to the ITC.
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//
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//--
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//----------------------------------------------------------------------------------
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.text
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.type AsmWriteItc, @function
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.proc AsmWriteItc
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.regstk 1, 0, 0, 0
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AsmWriteItc::
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mov ar.itc = in0
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mov r8 = in0;;
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br.ret.dpnt b0;;
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.endp AsmWriteItc
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//---------------------------------------------------------------------------------
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//++
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// AsmReadItm
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//
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// This routine is used to Read the value of Interval Timer Match Register (ITM).
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//
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// Arguments :
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//
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// On Entry :
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//
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// Return Value: The current value of ITM.
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//
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//--
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//----------------------------------------------------------------------------------
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.text
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.type AsmReadItm, @function
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.proc AsmReadItm
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AsmReadItm::
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mov r8 = cr.itm;;
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br.ret.dpnt b0;;
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.endp AsmReadItm
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//---------------------------------------------------------------------------------
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//++
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// AsmWriteItm
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//
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// This routine is used to write the value to Interval Timer Match Register (ITM).
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//
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// Arguments :
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//
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// On Entry : The value need to be written to ITM
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//
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// Return Value: The value written to ITM.
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//
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//--
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//----------------------------------------------------------------------------------
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.text
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.type AsmWriteItm, @function
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.proc AsmWriteItm
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.regstk 1, 0, 0, 0
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AsmWriteItm::
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mov cr.itm = in0
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mov r8 = in0;;
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srlz.d;
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br.ret.dpnt b0;;
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.endp AsmWriteItm
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//---------------------------------------------------------------------------------
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//++
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// AsmReadIva
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//
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// This routine is used to read the value of Interruption Vector Address Register (IVA).
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//
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// Arguments :
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//
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// On Entry :
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//
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// Return Value: The current value of IVA.
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//
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//--
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//----------------------------------------------------------------------------------
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.text
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.type AsmReadIva, @function
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.proc AsmReadIva
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AsmReadIva::
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mov r8 = cr.iva;;
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br.ret.dpnt b0;;
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.endp AsmReadIva
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//---------------------------------------------------------------------------------
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//++
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// AsmWriteIva
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//
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// This routine is used to write the value to Interruption Vector Address Register (IVA).
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//
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// Arguments :
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//
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// On Entry : The value need to be written to IVA
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//
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// Return Value: The value written to IVA.
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//
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//--
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//----------------------------------------------------------------------------------
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.text
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.type AsmWriteIva, @function
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.proc AsmWriteIva
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.regstk 1, 3, 0, 0
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alloc loc1=ar.pfs,1,4,0,0 ;;
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mov loc2 = psr
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rsm 0x6000 // Make sure interrupts are masked
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AsmWriteIva::
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mov cr.iva = in0
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srlz.i;;
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mov psr.l = loc2;;
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srlz.i;;
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srlz.d;;
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mov ar.pfs=loc1 ;;
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mov r8 = in0;;
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br.ret.dpnt b0;;
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.endp AsmWriteIva
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//---------------------------------------------------------------------------------
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//++
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// AsmReadPta
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//
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// This routine is used to read the value of Page Table Address Register (PTA).
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//
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// Arguments :
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//
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// On Entry :
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//
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// Return Value: The current value of PTA.
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//
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//--
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//----------------------------------------------------------------------------------
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.text
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.type AsmReadPta, @function
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.proc AsmReadPta
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AsmReadPta::
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mov r8 = cr.pta;;
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br.ret.dpnt b0;;
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.endp AsmReadPta
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//---------------------------------------------------------------------------------
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//++
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// AsmWritePta
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//
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// This routine is used to write the value to Page Table Address Register (PTA)).
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//
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// Arguments :
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//
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// On Entry : The value need to be written to PTA
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//
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// Return Value: The value written to PTA.
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//
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//--
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//----------------------------------------------------------------------------------
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.text
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.type AsmWritePta, @function
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.proc AsmWritePta
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.regstk 1, 0, 0, 0
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AsmWritePta::
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mov cr.pta = in0
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mov r8 = in0;;
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srlz.i;;
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srlz.d;;
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br.ret.dpnt b0;;
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.endp AsmWritePta
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