question regarding link_elf.c

[PL]

Dnia 29-09-2010 o godz. 16:58 Andriy Gapon napisał(a):
> on 29/09/2010 17:44 PL said the following:
> > Dnia 29-09-2010 o godz. 16:23 Andriy Gapon napisał(a):
> >> on 29/09/2010 17:13 PL said the following:
> >>> It seems like it is not a problem in my own code, since readelf -S on a
> >>> elf file
> >>> gives me the same results as my debug messages. I've created an empty
> >>> module, to
> >>> simplify debugging. Both my code, and readelf says, that '.text' section
> >>> address
> >>> is 0x3e0, and its size is 7 bytes. Adding 0x3e0 to lf->address points to
> >>> a valid location.
> >>>
> >>> '.data' is supposed to be at 0x1424 (again, both my code and readelf
> >>> returns the same thing),
> >>> but the actual data starts at lf->address + 0x3e7. How do I know ? I've
> >>> added global
> >>> initialized string variable in empty test module, and Im looking at the
> >>> memory to determine
> >>> it's location. I'm not sure what is wrong then.
> >>
> >>
> >> Can you post a link to the compiled test module?
> >>
> >> --
> >> Andriy Gapon
> > 
> > Well.. i don't have any public 'hosting', but I put it in here:
> > 
> > http://www.4shared.com/dir/LHn_I393/sharing.html
> > 
> > Also, the code is as simple as:
> > 
> >   1 #include <sys/param.h>
> >   2 #include <sys/kernel.h>
> >   3 #include <sys/module.h>
> >   4
> >   5
> >   6 char *str =   "THIS IS A STR MARKING DATA START";
> 
> You marker was put into .rodata section.
> Try char str[] instead.
> 
> >   8 static int kms_null_handler(module_t m, int op, void *data)
> >   9 {
> >  10         return (0);
> >  11 }
> >  12
> >  13 static moduledata_t kms_null_data = {
> >  14         "kms_null",
> >  15         kms_null_handler,
> >  16         NULL,
> >  17 };
> >  18
> >  19 DECLARE_MODULE(kms_null, kms_null_data, SI_SUB_EXEC, SI_ORDER_ANY);
> > 
> > It is being compiled on i386/GENERIC kernel.
> > 
> > 
> 
> 
> --
> Andriy Gapon
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THANKS ! How could I miss that ? :)