cvs commit: src/gnu/usr.bin/gdb/kgdb kgdb.h main.c trgt.c

John Baldwin jhb at
Thu Jan 17 13:43:13 PST 2008

jhb         2008-01-17 21:43:12 UTC

  FreeBSD src repository

  Modified files:
    gnu/usr.bin/gdb/kgdb kgdb.h main.c trgt.c 
  Add a new 'add-kld <kld>' command to kgdb to make it easier to analyze
  crash dumps with kernel modules.  The command is basically a wrapper
  around add-symbol-file except that it uses the kernel linker data
  structures and the ELF section headers of the kld to calculate the
  section addresses add-symbol-file needs.
  The 'kld' parameter may either be an absolute path or a relative path.
  kgdb looks for the kld in several locations checking for variants with
  ".symbols" or ".debug" suffixes in each location.  The first location it
  tries is just opening the specified path (this handles absolute paths and
  looks for the kld relative to the current directory otherwise).  Next
  it tries to find the module in the same directory of the kernel image
  being used.  If that fails it extracts the kern.module_path from the
  kernel being debugged and looks in each of those paths.
  The upshot is that for the common cases of debugging /boot/kernel/kernel
  where the module is in either /boot/kernel or /boot/modules one can merely
  do 'add-kld foo.ko'.
  MFC after:      1 week
  Revision  Changes    Path
  1.7       +2 -0      src/gnu/usr.bin/gdb/kgdb/kgdb.h
  1.12      +2 -2      src/gnu/usr.bin/gdb/kgdb/main.c
  1.6       +271 -0    src/gnu/usr.bin/gdb/kgdb/trgt.c

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