Out-of-date lm_info in nto-tdep.c

[Simon Marchi <simon dot marchi at polymtl dot ca>]

Hi Aleksandar,

I am writing to you because you most recently update the Neutrino port 
of GDB.

I am in the process of reworking the lm_info structures, and noticed 
that nto-tdep.c has its own copy of the lm_info structure found in 
solib-svr4.c.  However, it appears to have been out-of-date for quite 
some time.  Commit 3957565 [1] changed the layout of svr4's lm_info in 
2011 and the version in nto-tdep.c hasn't been updated.  This probably 
means that nto's lm_addr function is broken.  Could you check how that 
affects the nto target and if something needs fixing?

If it can help you, I am planning to make lm_info an empty base class, 
from which the various implementations will inherit (e.g. lm_info_svr4, 
lm_info_darwin, etc).  This means that we could put the svr4-specific 
structure, lm_info_svr4, in the header file solib-svr4.h.  The structure 
would then be available for nto-tdep.c to use, so it wouldn't need to 
have its own copy.

Thanks,

Simon

[1] https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=3957565