[RFC] support show each pane {regs, code, backtrace and more} in different tty

[wangrongwei]

Hi, @hugsy, and other folks

Recently, I debug linux kernel and found gef is very powerful. So it lets me want do something make it more friendly.
And I have written a simple POC [1] to realize above function, some modifications in gef.py and a new python script (now also named gef, a command in linux). And I know 'voltron' [2] can do the same stuff. But it seems gef is a better choice for highlight view and more concise.

Here something need to dicsuss if anyone have interesting in it:

• How to use this function?
  Now, I had modified gef.py, mainly on context_regs() and linux command script: gef. You just need to run 'gef view regs' (likes voltron) in bash, and regs info shows in current tty.
• Which method to share or communicate between gdb and new script?
  Now, I adopt pipe to share infomation for quick POC, but I think it's not a good choice (we cann't view regs on both or more terminals at the same time). Maybe share memory is better.
• ?

Maybe I missed more simple way to realize above function, please tell me.

Thanks for your time.

[1] https://github.com/wangrongwei/gef
[2] https://github.com/snare/voltron