Hi folks. Recently I was trying to track down what gem5 was doing when it seemed to get lost booting Android, and it occurred to me that debugging with gdb wouldn't help very much since presumably most of the time gem5 would be running in userspace which it wouldn't have symbols for. On top of that, while I might be able to see what was happening at right that instance (when I randomly stopped execution), I wouldn't be able to easily see what other processes were running and what they were doing, what the kernel was up to, etc.
While writing a tool that would let you see all that sort of information is definitely technically possible and would be extremely useful, it would likely also be a lot of work. Does anybody know of anything out there already which does something like this? Or that's close and could be used as a starting point? GDB's options are limited since it wants to run as a server you pipe commands to and get text responses from, and (although it might be out of date) what I was reading made it sound like it didn't handle multiple simultaneous contexts of execution completely. The LLVM debugger lldb (I think?) looked like it would give better access to the nuts and bolts. Reading about it on its site made it sound like it was still in early stages though, where only a few arch/OS combinations that are supported. Maybe the parts they're relying on support everything we'd want, but just lldb which drives them is still incomplete? In any case, at this point this is just an intriguing idea I'm kicking around and looking at the feasibility of. Any helpful tips are welcome. Gabe _______________________________________________ gem5-dev mailing list gem5-dev@gem5.org http://m5sim.org/mailman/listinfo/gem5-dev
