Diff for /gforth/comp-i.fs between versions 1.12 and 1.17

version 1.12, 2003/03/09 15:16:46 version 1.17, 2007/09/29 22:20:02
Line 1 Line 1
 \ Compare nonrelocatable images and produce a relocatable image  \ Compare nonrelocatable images and produce a relocatable image
   
 \ Copyright (C) 1996,1997,1998,2002 Free Software Foundation, Inc.  \ Copyright (C) 1996,1997,1998,2002,2003,2004 Free Software Foundation, Inc.
   
 \ This file is part of Gforth.  \ This file is part of Gforth.
   
Line 19 Line 19
 \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.  \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
   
 s" address-unit-bits" environment? drop constant bits/au  s" address-unit-bits" environment? drop constant bits/au
 6 constant dodoes-tag  7 constant dodoes-tag
   
 : write-cell { w^ w  file-id -- ior }  : write-cell { w^ w  file-id -- ior }
     \ write a cell to the file      \ write a cell to the file
Line 43  s" address-unit-bits" environment? drop Line 43  s" address-unit-bits" environment? drop
     if      if
         ." : images have the same base address; producing only a data-relocatable image" cr          ." : images have the same base address; producing only a data-relocatable image" cr
     else      else
         offset abs expected-offset <> abort" images produced by different engines"          \ the following sanity check produces false positices with exec-shield
           \ offset abs expected-offset <> abort" images produced by different engines"
         ."  offset=" offset . cr          ."  offset=" offset . cr
         0 image1 i-field + ! 0 image2 i-field + !          0 image1 i-field + ! 0 image2 i-field + !
     endif      endif
     base offset ;      base offset ;
   
 Create tag-offsets  
 include kernel/groups.fs  
 tag-offsets $20 cells + here tuck - dup allot erase  
   
 : >tag ( index -- tag )  : >tag ( index -- tag )
     dup dodoes-tag 2 + > IF  dodoes-tag 2 + -      dup dodoes-tag 2 + > IF
         $21 1 DO  dup tag-offsets I cells + @ < IF          $21 1 DO  dup tag-offsets I cells + @ < IF
                 tag-offsets I 1- cells + @ - I 9 lshift + negate                  tag-offsets I 1- cells + @ - I 1- 9 lshift + negate
                 UNLOOP  EXIT  THEN  LOOP                  UNLOOP  EXIT  THEN  LOOP
         dodoes-tag 2 + +  
     THEN  -2 swap - ;      THEN  -2 swap - ;
   
 : compare-images { image1 image2 reloc-bits size file-id -- }  : compare-images { image1 image2 reloc-bits size file-id -- }

Removed from v.1.12  
changed lines
  Added in v.1.17


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