CODEWITHSUNDEEP
gdbremote-debugging
Allan
Allan

Reputation: 4710

How can I reach STDIN/STDOUT through a gdbserver session

If I start a normal 'gdb' session, then I can reach STDIN and see STDOUT directly in the terminal:

$ gdb wc
GNU gdb (Gentoo 7.10.1 vanilla) 7.10.1
...
gdb> run
Starting program: /usr/bin/wc 
asdf
      1       1       5
[Inferior 1 (process 28131) exited normally]
gdb> quit
$

Can I do the same with a gdbserver???

Here is what I have tried (gdbserver):

$ gdbserver /dev/ttyS0 wc
Process wc created; pid = 28156
Listening on port 2345

and client:

$ gdb
GNU gdb (Gentoo 7.10.1 vanilla) 7.10.1
...
gdb> c
Continuing.

Program received signal SIGINT, Interrupt.
0x00007ffff7ddbc40 in _start () from target:/lib64/ld-linux-x86-64.so.2
gdb>

But, it seems like STDIN/STDOUT is not being connected when using the gdbserver.

How can I run remote debugging over the serial line, and also access STDIN/STDOUT of the application that I'm debugging over the same serial line??

Upvotes: 5

Views: 2371

Answers (1)

Employed Russian
Employed Russian

Reputation: 213375

How can I run remote debugging over the serial line, and also access STDIN/STDOUT of the application that I'm debugging over the same serial line??

You'll need to use screen or tmux to multiplex gdb<->gdbserver and keyboard->application traffic over a single serial line.

Upvotes: 2

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