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

[Rainer Orth <ro@TechFak.Uni-Bielefeld.DE>]

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

* 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.

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