AF_GDB / GDB socket

I hate ptrace. But before killing it I need something to replace it. I could use a procfs style interface with ioctls but that's a complex interface.

Instead I want to use the GDB protocol over an AF_GDB socket. It would use socket(AF_GDB, SOCK_STREAM, pid) to connect to the process to be debugged.

To do a run command in gdb, gdb will fork, connect to its child, request a message for "exec", and continue the child. When the child execs the program gdb will grab control of the new process and proceed from there.

As part of this effort, connecting to pid 0 would enable gdb access to the kernel (mostly as a tools to examine memory and threads; no breakpoints would be allowed).