Re: 5.1 PATCH: Allow gdb to link on mips-sgi-irix5.3

[Elena Zannoni <ezannoni at cygnus dot com>]

Rainer Orth writes:
 > I just tried the current CVS version, configured on IRIX 6.2 for
 > mips-sgi-irix5.3, to allow debugging O32 binaries on IRIX 6 during my work
 > to re-integrate O32 ABI support for IRIX 6 into GCC.
 > 
 > gdb failed to link, though:
 > 
 > ld32: ERROR   33 : Unresolved text symbol "no_shared_libraries" -- 1st referenced by libgdb.a(remote.o).
 > 
 > The patch below fixes this.
 > 
 > Unfortunately, the resulting gdb does not work at all:
 > 
 > * Trying to debug a trivial hello world compiled with cc -32 -g (i.e. with
 >   mdebug debugging information) lets gdb abort with an internal error:
 > 
 > % cc -32 -g -o hello-cc hello.c
 > % gdb/gdb ./hello-cc
 > GNU gdb 2001-07-26-cvs (MI_OUT)
 > Copyright 2001 Free Software Foundation, Inc.
 > GDB is free software, covered by the GNU General Public License, and you are
 > welcome to change it and/or distribute copies of it under certain conditions.
 > Type "show copying" to see the conditions.
 > There is absolutely no warranty for GDB.  Type "show warranty" for details.
 > This GDB was configured as "mips-sgi-irix5.3".../vol/gnu/src/gdb/src/gdb/mdebugread.c:2443: gdb-internal-error: sect_index_data not initialized
 >  

For ths particualr error, can you take a look at the threads:
http://sources.redhat.com/ml/gdb-patches/2001-05/msg00178.html
http://sources.redhat.com/ml/gdb-patches/2001-05/msg00187.html A
similar problem was reported but a fix was not generated. Hopefully
the discussion there that can help pinpoint your problem.

What are the sections in your file?


 > * Trying the same thing with a gcc-compiled binary (using gas, so stabs are 
 > in use) is not much better:
 > 
 > % gcc -g -o hello-gcc hello.c
 > % gdb/gdb ./hello-gcc
 > GNU gdb 2001-07-26-cvs (MI_OUT)
 > Copyright 2001 Free Software Foundation, Inc.
 > GDB is free software, covered by the GNU General Public License, and you are
 > welcome to change it and/or distribute copies of it under certain conditions.
 > Type "show copying" to see the conditions.
 > There is absolutely no warranty for GDB.  Type "show warranty" for details.
 > This GDB was configured as "mips-sgi-irix5.3"...
 > (gdb) b main
 > Breakpoint 1 at 0x400c44: file /homes/ro/src/c/test/hello.c, line 7.
 > (gdb) run
 > Starting program: /vol/gcc/obj/gdb/5.3/./hello-gcc 
 > /vol/gnu/src/gdb/src/gdb/regcache.c:281: gdb-internal-error: legacy_read_register_gen: Assertion `regnum >= 0 && regnum < (NUM_REGS + NUM_PSEUDO_REGS)' failed.
 > 

This seems to be a bogus regnumber that is outside the range defined
for your target.

Elena


 > Both programs can be debugged with gdb 5.0 ;-(
 > 
 > 	Rainer
 > 
 > -----------------------------------------------------------------------------
 > Rainer Orth, Faculty of Technology, Bielefeld University
 > 
 > Email: ro@TechFak.Uni-Bielefeld.DE
 > 
 > 
 > Thu Jul 26 23:27:26 2001  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>
 > 
 > 	* config/mips/irix5.mh (NATDEPFILES): Add solib.o.
 > 
 > Index: config/mips/irix5.mh
 > ===================================================================
 > RCS file: /cvs/src/src/gdb/config/mips/irix5.mh,v
 > retrieving revision 1.2
 > diff -u -p -r1.2 irix5.mh
 > --- irix5.mh	2000/06/12 06:09:05	1.2
 > +++ irix5.mh	2001/07/26 21:31:57
 > @@ -2,7 +2,7 @@
 >  XDEPFILES=
 >  XM_FILE= xm-irix5.h
 >  NAT_FILE= nm-irix5.h
 > -NATDEPFILES= fork-child.o irix5-nat.o corelow.o procfs.o \
 > +NATDEPFILES= fork-child.o solib.o irix5-nat.o corelow.o procfs.o \
 >  	proc-api.o proc-events.o proc-flags.o proc-why.o
 >  
 >  XM_CLIBS=-lbsd -lsun