MSP430 simulator in gdb

This is a follow-on to a previous discussion, which discussion quickly
drifted into language-lawyering:

https://www.mail-archive.com/[email protected]/msg10619.html

I am trying to use the msp430 simulator built into gdb and am having
trouble getting anywhere.

I'm using Ubuntu 12.04 and the msp430 tools from the repository. (I think
they're actually from Debian.)

I've made the following test program:

volatile int a=0;

int main(void) {
  while (1)
    a++;
}

Now I want to load it into the simulator, and watch "a" change.

I compile it like so;
$ msp430-gcc --version
msp430-gcc (GNU GCC patched mspgcc-20110716) 4.5.3
Copyright (C) 2010 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ msp430-gcc -o test.elf test.c

And load it into gdb like so:
$ msp430-gdb test.elf
GNU gdb (GDB) 7.2
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html
>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=i486-linux-gnu --target=msp430".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/markrages/hello_msp/test.elf...done.
(gdb) target sim
Connected to the simulator.
(gdb) load
(gdb) run
Starting program: /home/markrages/hello_msp/test.elf
Segmentation fault (core dumped)

Well, that is unhelpful.  Maybe I'll try with an older version of
msp430-gdb.

$ /usr/local/msp430/bin/msp430-gdb test.elf
GNU gdb 6.8
Copyright (C) 2008 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html
>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=i686-pc-linux-gnu --target=msp430"...
(gdb) target sim
Connected to the simulator.
(gdb) load
(gdb) run
Starting program: /home/markrages/hello_msp/test.elf
Segmentation fault (core dumped)

OK, how about the Java MSP430 simulator "mspsim"?
$ make run
java -classpath
"build/:lib/jcommon-1.0.14.jar:lib/jfreechart-1.0.11.jar:lib/jipv6.jar:lib/json-simple-1.1.1.jar"
se.sics.mspsim.Main
Usage: se.sics.mspsim.platform.sky.SkyNode <firmware>
make: *** [run] Error 1

No problem, I'll just run the thing myself and supply the executable as
argument.

$ java -classpath
"build/:lib/jcommon-1.0.14.jar:lib/jfreechart-1.0.11.jar:lib/jipv6.jar:lib/json-simple-1.1.1.jar"
se.sics.mspsim.Main ~/hello_msp/test.elf
MSPSim does not currently support the platform 'elf'.

Ah, that's going to be a problem.

Does anyone have other ideas for me to try?

Regards,
Mark
markrages@gmail

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