[gforth] / gforth / backtrac.fs  

gforth: gforth/backtrac.fs

Diff for /gforth/backtrac.fs between version 1.8 and 1.17

version 1.8, Sun Mar 9 15:16:46 2003 UTC version 1.17, Mon Dec 31 19:02:24 2007 UTC
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 \ backtrace handling  \ backtrace handling
   
 \ Copyright (C) 1999,2000,2003 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,
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 \ 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
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 \ 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 ;
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     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 @  
     if  
         backtrace-return-stack          backtrace-return-stack
         dup backtrace-rs-buffer adjust-buffer          dup backtrace-rs-buffer adjust-buffer
         backtrace-rs-buffer buffer-address @ swap move      backtrace-rs-buffer buffer-address @ swap move ;
         backtrace-empty off  
     then ;  
 IS store-backtrace  IS store-backtrace
   
 : print-bt-entry ( return-stack-item -- )  : print-bt-entry ( return-stack-item -- )
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 :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]

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