[hpux] interesting but difficult to unwind code

[Randolph Chung]

>    If you have our odump tool, "odump -comp a.out" will show you the 
> compiler and options used to build each object for a PA32 executable :

thanks.

>    There are two bits in the "struct unwind_table_entry" defined in
> config/pa/tm-hppa.h (at least in the WDB sources) that cover alloca() use
> and +Oentrysched use:
> 
>     unsigned int sched_entry_seq:1;     /* 25 */
> 		...
>     unsigned int alloca_frame:1;        /* 35 */
> 
> Unfortunately, even HP gdb doesn't print out those fields for a "maintenance
> print unwind" command.

I'll fix this this FSF gdb. Thanks for pointing this out!

Meanwhile with these pointers I've fixed the unwinding problem described 
previously in my local tree. Will do some more testing and send the 
patch to gdb-patches. Thanks for your help Carl.

randolph