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Linux device driver module debugging

Graham Newton
Intellectual 460 points

Posted in the linux forum but probably more relevent here.

http://e2e.ti.com/support/embedded/linux/f/354/p/167281/680398.aspx#680398

  • 0
    TI__Guru**** 171409 points

    Graham,

    I never performed module debugging using either kgdb or CCS, therefore my knowledge on the subject is very limited. Since the original post references Sys/Link, I would suggest you to get help from the BIOS forum, as one of their experts there may have already experimented with that.

    Regards,

    Rafael

  • 0 in reply to desouza
    Intellectual 460 points

    I have had another go at this.  By setting up a normal linux kernel debug session. Once the module is loaded from the module load address I can work out an address to set a breakpoint. Set the breakpoint. Run the code and lo and behold the breakpoint is hit.

    However all you get is a disassembly and the registers.  The rest you have to go figure yourself.

    All the CCV5 needs to do is to be able to load extra symbols at a specified offset and it would work!  

    CCSV5 release notes suggests that module debugging can not be done because Linux aware debugging is not supported in CCSV5.  

  • 0 in reply to Graham Newton
    TI__Guru**** 162975 points

    Graham,

    It is possible to load symbols with an offset.  There are a couple ways to do it.  The most common way is to open the Modules View (View -> Modules).  When this view opens it will show you all the symbol files that are loaded.  Along the top are a set of buttons.  The load symbols and add symbols buttons allow you to specify an offset.

    These actions are also available from the Run -> Load menu.  However I like the modules view since it shows you everything that is loaded.

    Regards,

    John