[gforth] / gforth / backtrac.fs  

gforth: gforth/backtrac.fs

Diff for /gforth/backtrac.fs between version 1.1 and 1.11

version 1.1, Mon Jul 24 13:48:36 2000 UTC version 1.11, Wed Dec 1 10:02:59 2004 UTC
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 \ backtrace handling  \ backtrace handling
   
 \ Copyright (C) 1999 Free Software Foundation, Inc.  \ Copyright (C) 1999,2000,2003 Free Software Foundation, Inc.
   
 \ This file is part of Gforth.  \ This file is part of Gforth.
   
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 \ You should have received a copy of the GNU General Public License  \ You should have received a copy of the GNU General Public License
 \ along with this program; if not, write to the Free Software  \ along with this program; if not, write to the Free Software
 \ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
   
   
 \ growing buffers that need not be full  \ growing buffers that need not be full
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 \ backtrace stuff  \ backtrace stuff
   
 create backtrace-rs-buffer buffer% %allot \ copy of the rturn stack at throw  create backtrace-rs-buffer buffer% %allot drop
   \ copy of the return stack at throw
   
 : init-backtrace ( -- )  : init-backtrace ( -- )
     backtrace-rs-buffer init-buffer ;      backtrace-rs-buffer init-buffer ;
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     then ;      then ;
 IS store-backtrace  IS store-backtrace
   
 : print-backtrace ( addr1 addr2 -- )  : print-bt-entry ( return-stack-item -- )
     \G print a backtrace for the return stack addr1..addr2  
     cr ." Backtrace:"  
     swap u+do  
         cr  
         i @ dup hex. ( return-addr? )  
         cell - dup in-dictionary? over dup aligned = and          cell - dup in-dictionary? over dup aligned = and
         if          if
             @ look          @ dup threaded>name dup if
               .name drop
           else
               drop dup look if
                   .name drop
               else
                   drop body> look \ !! check for "call" in cell before?
             if              if
                 .name                  .name
             else              else
                 drop                  drop
             then              then
               then
           then
         else          else
             drop              drop
         then      then ;
   
   : print-backtrace ( addr1 addr2 -- )
       \G print a backtrace for the return stack addr1..addr2
       cr ." Backtrace:"
       swap u+do
           cr
           i @ dup hex. ( return-addr? )
           print-bt-entry
         cell +loop ;          cell +loop ;
   
 :noname ( -- )  :noname ( -- )
     backtrace-rs-buffer 2@ over + print-backtrace ;      backtrace-rs-buffer 2@ over + print-backtrace ;
 IS dobacktrace  IS dobacktrace
   
   [ifdef] defer-default
   :noname
       r@ >stderr cr ." deferred word " print-bt-entry ." is uninitialized" ;
   is defer-default
   [then]

Generate output suitable for use with a patch program
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Removed from v.1.1  
changed lines
  Added in v.1.11
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