Request Description
0 Start tracing (issued by debugged process) 1 Read word in instruction space (code) 2 Read word in data space (data + stack) 3 Read word in user space (registers + more) 4 Write word in instruction space 5 Write word in data space 6 Write word in user space 7 Resume execution (continue) 8 Terminate debugged process (kill) 9 Trace debugged process (single step)