kmx git

\ ========== Copyright Header Begin ==========================================
\ 
\ Hypervisor Software File: swapped-access.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: @(#)swapped-access.fth 1.1 02/05/15
purpose: 
copyright: Copyright 1994-1995,2002 Sun Microsystems, Inc.  All Rights Reserved
copyright: Use is subject to license terms.

headerless

: swapped-rx@ ( vadr -- x )  rx@  xbflip  ;
: swapped-rl@ ( vadr -- l )  rl@  lbflip  ;
: swapped-rw@ ( vadr -- w )  rw@  wbflip  ;

: swapped-rx! ( x vadr -- )  >r xbflip r> rx!  ;
: swapped-rl! ( l vadr -- )  >r lbflip r> rl!  ;
: swapped-rw! ( l vadr -- )  >r wbflip r> rw!  ;

: peeker ( adr rd-acf swap-acf -- false | value true )
   >r execute if		( value )
     r> execute true		( value' true )
   else				( -- )
     r> drop false		( false )
   then				( value,true | false )
;

: poker  ( data adr wr-acf swap-acf -- false | true  )
   -rot				( data swap-acf adr wr-acf )
   2swap			( adr wr-acf data swap-acf )
   execute			( wr-acf adr data' )
   -rot execute			( false | true )
;

: swapped-lpeek ( adr -- false | value true )  ['] lpeek ['] lbflip  peeker  ;
: swapped-wpeek ( adr -- false | value true )  ['] wpeek ['] wbflip  peeker  ;

: swapped-lpoke ( value adr -- flag )  ['] lpoke ['] lbflip  poker  ;
: swapped-wpoke ( value adr -- flag )  ['] wpoke ['] wbflip  poker  ;

headers
: restore-fcodes ( -- )
   ['] rw@ false h# 232 set-token
   ['] rw! false h# 233 set-token
   ['] rl@ false h# 234 set-token
   ['] rl! false h# 235 set-token
   ['] wpeek false h# 221 set-token
   ['] lpeek false h# 222 set-token
   ['] wpoke false h# 224 set-token
   ['] lpoke false h# 225 set-token
;

: setup-swapped-fcodes ( -- )
   ['] swapped-rw@ false h# 232 set-token
   ['] swapped-rw! false h# 233 set-token
   ['] swapped-rl@ false h# 234 set-token
   ['] swapped-rl! false h# 235 set-token
   ['] swapped-wpeek false h# 221 set-token
   ['] swapped-lpeek false h# 222 set-token
   ['] swapped-wpoke false h# 224 set-token
   ['] swapped-lpoke false h# 225 set-token
;

headerless
openbios/openboot/obp/dev/utilities/swapped-access.fth

Commit

obp/dev/utilities/swapped-access.fth
