Cross solib support; multi-arch problem?

[Orjan Friberg <orjan dot friberg at axis dot com>]

I've been trying to configure the CRIS target to understand shared
libraries.  It being pure multi-arch, I only have a cris.mt file in
config/cris which looks like:

TDEPFILES= cris-tdep.o corelow.o solib.o

(I may have to add solib-svr4.o to that list; right now I'm just trying
to get something to build.)  In addition to that, I've included
"solib.h" in cris-tdep.c.  Building fails because of undefined reference
to `disable_breakpoints_in_shlibs'.  Checking breakpoint.c, that
function and a few others are inside an #ifdef SOLIB_ADD, which is
defined in solib.h.  Strange, no?

I've scrutinized mips-linux-tdep.c since it seems to have the
functionality I want to implement, being a cross-debugger and
understanding shared libs.  From looking at its config files, I couldn't
figure out what makes the solib thingy build correctly.  Then I thought
it might be related to mips-linux being only partially multi-arched.

So, I added a tm-cris.h file containing:

#define GDB_MULTI_ARCH 1
#include "solib.h"

(and commented out the gdb_multi_arch=yes line in configure.tgt) and
behold, it builds.  Granted, it bombs when I try to use the
sharedlibrary command.  I'm not sure what needs to be fixed; if it's
something in the multi-arch framework or if I just need to do something
differently in my tdep file.

-- 
Orjan Friberg              E-mail: orjan.friberg@axis.com
Axis Communications AB     Phone:  +46 46 272 17 68