Diff for /gforth/backtrac.fs between versions 1.4 and 1.18

version 1.4, 2000/09/23 15:46:51 version 1.18, 2012/06/23 20:58:30
Line 1 Line 1
 \ backtrace handling  \ backtrace handling
   
 \ Copyright (C) 1999,2000 Free Software Foundation, Inc.  \ Copyright (C) 1999,2000,2003,2004,2006,2007 Free Software Foundation, Inc.
   
 \ This file is part of Gforth.  \ This file is part of Gforth.
   
 \ Gforth is free software; you can redistribute it and/or  \ Gforth is free software; you can redistribute it and/or
 \ modify it under the terms of the GNU General Public License  \ modify it under the terms of the GNU General Public License
 \ as published by the Free Software Foundation; either version 2  \ as published by the Free Software Foundation, either version 3
 \ of the License, or (at your option) any later version.  \ of the License, or (at your option) any later version.
   
 \ This program is distributed in the hope that it will be useful,  \ This program is distributed in the hope that it will be useful,
Line 15 Line 15
 \ GNU General Public License for more details.  \ GNU General Public License for more details.
   
 \ 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, see http://www.gnu.org/licenses/.
 \ 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
Line 43  end-struct buffer% Line 42  end-struct buffer%
   
 \ backtrace stuff  \ backtrace stuff
   
 create backtrace-rs-buffer buffer% %allot \ copy of the return 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 ;
Line 65  IS 'cold Line 65  IS 'cold
     else \ throw by signal handler with insufficient information      else \ throw by signal handler with insufficient information
         handler @ cell - \ beyond that we know nothing          handler @ cell - \ beyond that we know nothing
     then      then
     backtrace-rp0 @ [ 2 cells ]L - over - 0 max ;      backtrace-rp0 @ [ 1 cells ]L - over - 0 max ;
   
 :noname ( -- )  :noname ( -- )
     backtrace-empty @      backtrace-return-stack
       dup backtrace-rs-buffer adjust-buffer
       backtrace-rs-buffer buffer-address @ swap move ;
   IS store-backtrace
   
   : print-bt-entry ( return-stack-item -- )
       cell - dup in-dictionary? over dup aligned = and
     if      if
         backtrace-return-stack          @ dup threaded>name dup if
         dup backtrace-rs-buffer adjust-buffer              .name drop
         backtrace-rs-buffer buffer-address @ swap move          else
         backtrace-empty off              drop dup look if
                   .name drop
               else
                   drop body> look \ !! check for "call" in cell before?
                   if
                       .name
                   else
                       drop
                   then
               then
           then
       else
           drop
     then ;      then ;
 IS store-backtrace  
   
 : print-backtrace ( addr1 addr2 -- )  : print-backtrace ( addr1 addr2 -- )
     \G print a backtrace for the return stack addr1..addr2      \G print a backtrace for the return stack addr1..addr2
     cr ." Backtrace:"      2dup u< IF  cr ." Backtrace:"  THEN
     swap u+do      swap u+do
         cr          cr
         i @ dup hex. ( return-addr? )          i @ dup hex. ( return-addr? )
         cell - dup in-dictionary? over dup aligned = and          print-bt-entry
         if  
             @ look  
             if  
                 .name  
             else  
                 drop  
             then  
         else  
             drop  
         then  
         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]
   

Removed from v.1.4  
changed lines
  Added in v.1.18


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