5.2. gdbserver libc
Our setup gives you the rare opportunity to step debug libc and other system libraries.
For example in the guest:
./gdbserver.sh ./posix/count.out
Then on host:
./run-gdb --gdbserver --userland userland/posix/count.c main
and inside GDB:
break sleep continue
And you are now left inside the sleep function of our default libc implementation uclibc libc/unistd/sleep.c!
You can also step into the sleep call:
step
This is made possible by the GDB command that we use by default:
set sysroot ${common_buildroot_build_dir}/staging
which automatically finds unstripped shared libraries on the host for us.