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\ Hypervisor Software File: range.fth
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\ Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
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\ ========== Copyright Header End ============================================
id: @(#)range.fth 1.2 02/04/24
purpose: 
copyright: Copyright 1999-2002 Sun Microsystems, Inc.  All Rights Reserved
copyright: Use is subject to license terms.

headerless
\ Utility routine to avoid always saying encode-int encode+
: ei+ ( propaddr proplen int -- propaddr proplen ) encode-int encode+ ;
: 0+ ( propaddr proplen 0 -- propaddr proplen ) 0 ei+ ;

\  Encode an X-integer as X.hi X.lo
: ex+ ( propaddr proplen X  -- propaddr proplen )
   xlsplit swap >r  ei+  r>  ei+
;

: encode-range ( prop-adr,len type base sizeX -- prop-adr,len )
   dup xlsplit or if		  ( prop-adr,len type base sizeX )
      >r >r			  ( prop-adr,len type ) ( R: sizeX base )

      \  Convert type to PCI-style "space"
      d# 24 << 1 d# 31 << or	  ( prop-adr,len type-space ) ( R: sizeX base )

      \  Stash a copy for later
      dup 2swap rot		  ( type-space prop-adr,len type-space )

      \  Encode type-space
      ei+			  ( type-space prop-adr,len ) ( R: sizeX base )

      \  Encode Base.hi,lo
      r@ ex+			  ( type prop-adr,len )       ( R: sizeX base )

      \  Encode space
      rot ei+			  ( prop-adr,len )	      ( R: sizeX base )

      \  Encode Base.hi,lo
      r> ex+			  ( prop-adr,len )	      ( R: sizeX )

      \  Encode Size.hi,lo = 0
      r> ex+			  ( prop-adr,len )
   else 			  ( prop-adr,len type base )
      drop 2drop		  ( prop-adr,len )
   then 			  ( prop-adr,len )
;