breakpoints not working in gdbserver

[Simon Posnjak <simon dot posnjak at siol dot net>]

Hi all,

I'm trying out a cross-debuger for arm/ia32 development. I have build
gdb for arm that runs on ia32 (./configure --host=i686-pc-linux-gnu
--target=armv4l-unknown-linux --prefix=/usr/local/arm/
--exec-prefix=/usr/local/arm/ --program-prefix=arm-) 
and gdbserver for arm (sh configure --target=armv4l-unknown-linux). 

Then I strip the gdbserver and uploade it to the arm based bord and
run(access03 is the program I'm trying to debug):

# ./gdbserver host:33000 ./access03
Process ./access03 created; pid = 170

On the ia32, I fire up the gdb and do:
[root@klada access]# /usr/local/arm/gdb/bin/arm-gdb access03
GNU gdb 20020813
Copyright 2002 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 "--host=i686-pc-linux-gnu --target=armv4l-unknown-linux"...
(gdb) set solib-absolute-prefix /dev/null
(gdb) set solib-search-path /staff2/4pot/buildroot/build/stage/lib
(gdb) target remote 10.1.0.2:33000
Remote debugging using 10.1.0.2:33000
0x40000d20 in ?? ()
(gdb) list 125
120
121     int exp_enos[]={EFAULT, 0};  /* List must end with 0 */
122
123     char * bad_addr = 0;
124
125     int main(int ac, char **av)
126     {
127         int lc;             /* loop counter */
128         char *msg;          /* message returned from parse_opts */
129
(gdb) br 127
Breakpoint 1 at 0x8fdc: file access03.c, line 127.
(gdb) c
Continuing.

Program received signal SIGILL, Illegal instruction.
0x40002b38 in _dl_debug_state ()
   from /staff2/4pot/buildroot/build/stage/lib/ld-uClibc.so.0
(gdb) bt
#0  0x40002b38 in _dl_debug_state ()
   from /staff2/4pot/buildroot/build/stage/lib/ld-uClibc.so.0
#1  0x40001c74 in _dl_parse_copy_information ()
   from /staff2/4pot/buildroot/build/stage/lib/ld-uClibc.so.0
(gdb)

The program dies with Illegal instruction - if I run it without
gdbserver it is working fine.

I'm using a home-made linux system:
kernel 2.4.18
uClibc 0.9.14
gcc-2.95.3

Is this maybe a problem with uclibc... or is this problem of
gdb(server)?

	Regards Simon

-- 
Simon Posnjak
http://klada.dyndns.org