Hi, On Wed, Jan 20, 2016 at 12:10:25PM -0800, Josh Stone wrote: > Hi, > > I've been experimenting with using strace via gdbserver, through the gdb > remote protocol. It's now in good enough state that I'd like to get > some feedback. > > First, syscall support in gdbserver is very new. There was a patch > posted a few years ago by Philippe Waroquiers, but I only just finished > getting that merged last week. This will be in GDB 7.11: > https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=82075af2c14b1f8a54fa5796fb63f7ef23f98d9d > > You can find my strace hacking at github.com/cuviper/strace/. It adds a > "-G host:port" option to point to a listening gdbserver. However I've > mostly just tested this on localhost so far, and surely cross-arch stuff > won't work.
I'm not familiar with gdb remote protocol, so I'm not quite sure how difficult it would take to implement all features supported by strace, some of them (like -P and -y options) are not even ptrace based. If it's feasible, then gdbserver support might be worth doing. [...] > All feedback is welcome. If you think this might be interesting enough > to properly merge into strace, I'd especially appreciate guidance on how > to best approach that. A new feature like this has to be explicitly enabled at configure stage, and all new code specific to the feature has to be properly ifdef'ed. There has to be a test verifying that the new feature works. Ideally, the whole test suite should pass in gdbserver mode. Besides that, I cannot think of anything project specific. -- ldv
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