[lldb-dev] What is the stop/pause command for lldb?

Matthew Gardiner mg11 at csr.com
Fri Feb 21 02:13:01 PST 2014

Hi people,

What is the command to get a running target (inferior) process to stop
from the lldb command line?

Is it the Control-C sequence, as in gdb?

I've built (from the TRUNK) on 32-bit linux an lldb, with a couple of
local patches (for incorrect register map and broken writes to
dr6/7) and Control-C does not stop the program-being-debugged.

$ lldb hello
Current executable set to 'hello' (i386).
(lldb) run
Process 1996 launching
Process 1996 stopped
* thread #1: tid = 1996, 0x00000000, name = 'hello', stop reason = trace
     frame #0: 0x00000000
error: Input/output error
(lldb) Process 1996 launched: '/home/mg11/src/play/clang-tests/hello/hello' (i386)
Hello from test program!!
<--- I pressed Control-C now --->

All I see is the (lldb) prompt return. But clearly my inferior is not
stopped by the tracer:

$ cat /proc/1996/status
Name:	hello
State:	R (running)
Tgid:	1996
Pid:	1996
PPid:	1989
TracerPid:	1995

So is Control-C the correct command? In which case I imagine I've found
a bug?

Can someone answer this simple question?

Matthew Gardiner

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