openbios/openboot/obp/cpu/sparc/ultra4v/tte.fth

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• Hash : 1a08f436
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  Date : 2010-08-25T09:23:17
  

  change to well-formed svn directory structure. git-svn-id: svn://coreboot.org/openboot/trunk@2 4486e004-3823-0410-90c7-fb508cc143bb

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• obp/cpu/sparc/ultra4v/tte.fth

• \ ========== Copyright Header Begin ==========================================
  \ 
  \ Hypervisor Software File: tte.fth
  \ 
  \ Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
  \ 
  \  - Do no alter or remove copyright notices
  \ 
  \  - Redistribution and use of this software in source and binary forms, with 
  \    or without modification, are permitted provided that the following 
  \    conditions are met: 
  \ 
  \  - Redistribution of source code must retain the above copyright notice, 
  \    this list of conditions and the following disclaimer.
  \ 
  \  - Redistribution in binary form must reproduce the above copyright notice,
  \    this list of conditions and the following disclaimer in the
  \    documentation and/or other materials provided with the distribution. 
  \ 
  \    Neither the name of Sun Microsystems, Inc. or the names of contributors 
  \ may be used to endorse or promote products derived from this software 
  \ without specific prior written permission. 
  \ 
  \     This software is provided "AS IS," without a warranty of any kind. 
  \ ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, 
  \ INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A 
  \ PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN 
  \ MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR 
  \ ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR 
  \ DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN 
  \ OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR 
  \ FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE 
  \ DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, 
  \ ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF 
  \ SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
  \ 
  \ You acknowledge that this software is not designed, licensed or
  \ intended for use in the design, construction, operation or maintenance of
  \ any nuclear facility. 
  \ 
  \ ========== Copyright Header End ============================================
  id: @(#)tte.fth 1.1 06/02/16
  purpose:
  copyright: Copyright 2006 Sun Microsystems, Inc. All Rights Reserved
  copyright: Use is subject to license terms.
  
  headerless
  1 #pabits lshift 1-   constant pa-mask
  h#  3                 constant tteshift
  h#  8                 constant /tte
  
  : >tte-writable ( tte -- tte' )  1 d#  6 lshift or  ;
  : >tte-readonly ( tte -- tte' )  1 d#  6 lshift invert and  ;
  : >tte-priv     ( tte -- tte' )  1 d#  8 lshift or  ;
  : >tte-cv       ( tte -- tte' )  1 d#  9 lshift or  ;
  : >tte-cp       ( tte -- tte' )  1 d# 10 lshift or  ;
  : >tte-effect   ( tte -- tte' )  1 d# 11 lshift or  ;
  : >tte-invert   ( tte -- tte' )  1 d# 12 lshift or   ;
  : >tte-locked   ( tte -- tte' )  1 d# 61 lshift or  ;
  : >tte-valid    ( tte -- tte' )  1 d# 63 lshift or  ;
  : >tte-global   ( tte -- tte' )  0 or ;
  : >tte-8k       ( tte -- tte' )  7 invert and  0 or  ;
  : >tte-64k      ( tte -- tte' )  7 invert and  1 or  ;
  : >tte-4m       ( tte -- tte' )  7 invert and  3 or  ;
  : >tte-256m     ( tte -- tte' )  7 invert and  5 or  ;
  
  : >tte-soft     ( tte -- tte' )  h# 30 invert and  h# 10 or  ;
  0
  >tte-writable
  >tte-cv
  >tte-effect
  >tte-global
  >tte-invert
  constant tte-mode-mask
  
  : mode>tte  ( mode tte  -- tte' )
  
     \ MODE == -1 is the default
     over true  =  if  nip exit  then          ( mode tte )
  
     tte-mode-mask invert and                  ( mode tte" )
     over h# 001 and  if  >tte-writable  then  ( mode tte" )
     over h# 020 and  if  >tte-cv        then  ( mode tte" )
     over h# 040 and  if  >tte-effect    then  ( mode tte" )
     over h# 080 and  if  >tte-global    then  ( mode tte" )
     over h# 100 and  if  >tte-invert    then  ( mode tte" )
     nip
  ;
  : tte>mode  ( tte -- mode )
     0                                              ( tte mode" )
     over 0 >tte-writable and  if  h# 001 or  then  ( tte mode' )
     2 or \ Always readable                         ( tte mode' )
     4 or \ Always executable                       ( tte mode' )
     over 0 >tte-cv       and  if  h# 020 or  then  ( tte mode' )
     over 0 >tte-effect   and  if  h# 040 or  then  ( tte mode' )
     over 0 >tte-global   and  if  h# 080 or  then  ( tte mode' )
     over 0 >tte-invert   and  if  h# 100 or  then  ( tte mode )
     nip
  ;
  
  : valid-tte? ( tte -- flag )  0<  ;
  
  : tte>size ( tte -- size )  1 swap 7 and 3 * d# 13 + lshift  ;
  
  \ Set this as the memory high water mark.
  variable physmax physmax off
  
  headers
  : memory? ( pa.lo pa.hi -- flag ) drop physmax @ < ;
  
  : tte> ( tte -- pa.lo pa.hi )
     pa-mask and page#mask and  0 ( pa.lo pa.hi )
  ;
  : >tte ( pa.lo pa.hi -- tte )
     2dup memory?  if                    ( pa.lo pa.hi )
        drop 0 >tte-cp >tte-cv           ( pa tte )
     else                                ( pa.lo pa.hi )
        drop 0 >tte-effect               ( pa tte )
     then                                ( pa tte )
     swap  pa-mask and page#mask and or  ( tte )
     >tte-valid >tte-writable >tte-priv  ( tte )
  ;
  headerless
  

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