[Search for users] [Overall Top Noters] [List of all Conferences] [Download this site]

Conference turris::decbasic

Title:DEC BASIC Conference
Notice:SSB Kit Now available - Note 2.29
Moderator:TLE::HAYNES
Created:Wed Sep 15 1993
Last Modified:Thu Jun 05 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:210
Total number of notes:976

203.0. "Reverse engineering from obj file" by ISERE::POMMIER_JC () Thu Mar 27 1997 02:39


    Hi ,

      A customer has loose his source for two basic file.
      He still have the object file and he ask me if there 
      is a way to retrieve the original code ( Not in basic
      but perhaps in assembler ).

      I never heard of such tools ( my customer also ) , but
      somebody could have developed something in that way.


       Many thanks in advance for any answer

           Jean-Claude
T.RTitleUserPersonal
Name
DateLines
203.1EPS::VANDENHEUVELHeinThu Mar 27 1997 08:3911
    
    If the modules are smallish in size and have a well defined API then
    one thing you might consider is to use the VMS Debugger to come up
    with suggested macro instructions. Just set a break point on the entry
    point and 'display instructions'. Also be carefull to generate a
    full link map with cross reference table to help understand what 
    contribution the module might have outside the code stream (psects,
    global symbols, global references,..)
    
    fwiw,
    	Hein.