gdbserver stdout/stderr redirection (or tty)

[Cleber Rosa <crosa at redhat dot com>]

Hi all,

Short story:

While I'm aware that gdbserver is not inteded to be a "daemonized" 
version of gdb itself, I wonder if the absence of input/output 
redirection[1] in gdbserver can be considered a limitation/bug and what 
is the interest level in having that limitation/bug addressed.

Long story:

We're working on a test framework that already provides some initial 
integration with GDB[2].

The architecture used is based on gdbserver+gdb (speaking MI). It starts 
a gdbserver per debugged process, and a gdb process to interact with it 
using MI. If an a noteworthy event occurs, it disconnects gdb from the 
gdbserver, and allows the use to connect to the gdbserver.

This architecture was chosen because a very important requirement is 
allowing users to use *regular*, *unmodified* gdb binaries for this 
interaction.

While this architecture works OK, it does not provide one fundamental 
feature: getting the output (and less importantly for now, input) right.

References:

1 - 
https://sourceware.org/gdb/current/onlinedocs/gdb/Input_002fOutput.html#Input_002fOutput
2 - http://avocado-framework.readthedocs.org/en/latest/DebuggingWithGDB.html