freebsd-skq

History

jmg 1031eb4832 add a set of scripts that I posted to -current last year. This makes debugging kernels and kernel modules much easier. It will automaticly locate kernel source, extract kernel module information, and rerun gdb to load kernel module symbol information (if available by compiling module w/ debuging symbols). I have not run these recently, so may need to be updated to work with gdb6. Feel free to fix as appropriate for -current.		2004-08-04 18:03:43 +00:00
..
dot.gdbinit
gdbinit.i386
gdbinit.kernel
gdbinit.vinum
kgdb
kld_deb.py
README

README

$FreeBSD$

This directory contains gdb macros for kernel debugging.  When you
build a debug kernel, the target "gdbinit" in the kernel Makefile will
create the correct .gdbinit files in the kernel build directory.  To
perform kernel debugging, you would do:

  # cd /usr/obj/usr/src/sys/GENERIC  (or name of kernel config)
  # make gdbinit
  # gdb kernel.debug
  This GDB was configured as "i386-undermydesk-freebsd"...
  Ready to go.  Enter 'tr' to connect to remote target
  and 'getsyms' after connection to load kld symbols.
  (kgdb) 


This directory also contains a kgdb script that given a crash dump number
automaticly extract the path to the kernel source, run gdb to extract
information about kernel modules loaded, and then rerun gdb loading the
necessary symbols for the modules.  You need to make sure you build the
modules w/ debugging symbols seperately to get things to work.