doug@wiley.UUCP (Doug Rudoff) (11/10/89)
I'd like to get GDB running on our new DECstation 3100. Does anyone have
any machine dependent files they can send me?
Thanks.
Send me e-mail at:
uunet!nwnexus!mdisea!rudoff (Note: nwnexus must be in path)
or if that fails please try:
{cit-vax,uunet}!wiley!doug
wiley!doug@csvax.caltech.edu
Doug Rudoffbothner@decwrl.dec.com (Per Bothner) (11/13/89)
I have been playing with getting gdb to run on the 3100.
I have made quite a bit of progress, but there are non-trivial
problems outstanding. [There are also legal issues to deal with.]
The DECstation complicates life for gdb quite a bit.
The main problem is the one-of-a-kind symbol-table format,
which is rather complicated. The other main difficulty is that
it is a RISC machine, with very lean procedure calling conventions.
E.g., there is no dedicated Frame Pointer, so you need information
from the symbol table to do a stack trace. Also, I am missing sme
documentation.
I have working:
- Assembler-level ("misc") symbols.
- Reading memory and registers.
- Stack trace.
- Running programs.
Main known problems that remain:
- Line number information. (I'm still confused about the format of
the line number table.)
- Reading other symbol information. (Reading type information
looks to be the most work.)
- Dis-assembler.
- Subroutine call.
- Core files (should be easy).
I don't know how much more progress I'll be able to make,
but if you can help, get in touch with me.
--
--Per Bothner
Western Software Lab, Digital Equipment, 181 Lytton Ave, Palo Alto CA 94301
bothner@wsl.dec.com ...!decwrl!bothner