Comment 3 for bug 1098729

What's the best way to debug the qemu user space emulation? I read this:

    http://wiki.qemu.org/Documentation/Debugging

but that seems to mainly refer to the qemu machine emulation.

I added -ggdb to QEMU_CFLAGS in config-host.mak so it builds with debug symbols but gdb still doesn't provide any useful information beyond the following:

    Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
    [New Thread 0x7ffefdb6b700 (LWP 11210)]
    [New Thread 0x7ffefdaf5700 (LWP 11211)]
    [New Thread 0x7ffefda7f700 (LWP 11212)]
    [New Thread 0x7ffefda09700 (LWP 11213)]
    [New Thread 0x7ffefd993700 (LWP 11214)]

    Program received signal SIGSEGV, Segmentation fault.
    [Switching to Thread 0x7ffefdaf5700 (LWP 11211)]
    0x0000000060363b58 in static_code_gen_buffer ()
    (gdb) bt
    #0 0x0000000060363b58 in static_code_gen_buffer ()
    #1 0x00000000f50ba518 in ?? ()
    #2 0x00000000624a9360 in ?? ()
    #3 0x00007ffefdaf4b80 in ?? ()
    #4 0x326cebdf4a8e4700 in ?? ()
    #5 0x00007ffe00000000 in ?? ()
    #6 0x0000000000000000 in ?? ()

and valgrind doesn't help either.