Re: GDB stub - connection from 32 bit GDB or 64 bit GDB

Jim Blandy
2006-09-27T19:58:28Z

"Mitchell Fang" <mitchell.fang@gmail.com> writes:
> How can the gdb stub know if a 32 bit GDB is connecting to the stub
> or a 64 bit GDB is connecting to the stub? Is it even possible? It
> doesn't seem possible to me looking at the current gdb remote
> commands, but hopefully I overlooked something.
> I have tried different combinations with 32-bit and 64-bit GDBs and
> gdbservers and it seems like a 32 bit GDB will not work with a 64 bit
> gdbserver and vice versa.

You haven't provided enough information for us to help you.

I assume you're having some troubles connecting a particular GDB with
a particular stub, but when you wrote your message, you guessed that
the problem was a 32-bit vs. 64-bit problem, and then wrote your
message to provide only enough information for us to help you *if*
your guess was right.

Instead, simply describe to us the problem you're having, without
guessing about the underlying cause:

- What is the program you're trying to debug running on? What
processor architecture? Is it an evaluation board?

- What kind of machine is GDB running on? What operating system is it
running?

- How is GDB connecting to the program you're trying to debug? The
remote protocol? gdbserver? RedBoot? A custom stub built into the
eval board?

- What happened when you tried to connect? What was the exact error
message? Can you cut and paste the session from your terminal?