Re: sparc implementation

From: Paul H. Hargrove (PHHargrove_at_lbl_dot_gov)
Date: Thu Sep 04 2008 - 18:32:34 PDT

  • Next message: Vincentius Robby: "Re: sparc implementation"
    Paul H. Hargrove wrote:
    > 2) I will send, when I have time, the CR_FIND_KSYM() lines to add to 
    > to deal with the (non-empty) unresolved kernel symbols 
    > (unless you e-mail to say you beat me to it).
    > 3) If you can confirm the unresolved symbol message that contains only 
    > whitespace, I'd appreciate knowing if I need to mess with 
    > SPARC-specific mods to cr_depmod or not.  We won't get past the depmod 
    > check until we do *something*. 
    re #2:
    There were two unresolved symbols.  One is "mem_map_zero", which happens 
    to correspond to a comment in about if we ever add sparc64 
    support.  A patch for that is attached.
    The other is "current_thread_info_reg", which I believe is caused by a 
    missing header include.  However, I can't blindly guess which blcr 
    source file is missing what from the provided output.  Please run the 
    following in your build directory:
      $ nm cr_module/kbuild/*.o | grep -e ^cr_ -e current_thread_info_reg
    That should list all the object files and show "U 
    current_thread_info_reg" under each that has an undefined reference to 
    this symbol.  From there I can look at what #include's the coresponding 
    source files currently contain and reason out what additional header(s) 
    they need.
    re #3:
    As for the depmod line with no symbol, I am guessing the following 
    1-character change (a '*' to a '+') is all that is needed:
    --- contrib/cr_depmod   5 Mar 2007 21:57:17 -0000       1.2
    +++ contrib/cr_depmod   5 Sep 2008 01:25:02 -0000
    @@ -44,7 +44,7 @@
       while (<NM>) {
         if (/ksymtab_(.*)$/) {
           $exports{$1} = 1;
    -    } elsif (/\sU\s+\.?(.*?)(_R(smp_)?[[:xdigit:]]{8})?$/) {
    +    } elsif (/\sU\s+\.?(.+?)(_R(smp_)?[[:xdigit:]]{8})?$/) {
           $imports{$1} = $shortname;
    Paul H. Hargrove                          PHHargrove_at_lbl_dot_gov
    Future Technologies Group
    HPC Research Department                   Tel: +1-510-495-2352
    Lawrence Berkeley National Laboratory     Fax: +1-510-486-6900

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