menu "Kernel hacking"
  
  source "lib/Kconfig.debug"
  
  config DEBUG_STACKOVERFLOW
  	bool "Check for stack overflows"
  	depends on DEBUG_KERNEL
  
  config DEBUG_DECOMPRESS_KERNEL
  	bool "Using serial port during decompressing kernel"
  	depends on DEBUG_KERNEL
  	default n
  	help
  	  If you say Y here you will confirm the start and the end of
  	  decompressing Linux seeing "Uncompressing Linux... " and
  	  "Ok, booting the kernel.
  " on console.

  config TEST_MISALIGNMENT_HANDLER
  	bool "Run tests on the misalignment handler"
  	depends on DEBUG_KERNEL
  	default n
  	help
  	  If you say Y here the kernel will execute a list of misaligned memory
  	  accesses to make sure the misalignment handler deals them with
  	  correctly.  If it does not, the kernel will throw a BUG.

  config KPROBES
  	bool "Kprobes"
  	depends on DEBUG_KERNEL
  	help
  	  Kprobes allows you to trap at almost any kernel address and
  	  execute a callback function.  register_kprobe() establishes
  	  a probepoint and specifies the callback.  Kprobes is useful
  	  for kernel debugging, non-intrusive instrumentation and testing.
  	  If in doubt, say "N".
  
  config GDBSTUB
  	bool "Remote GDB kernel debugging"

  	depends on DEBUG_KERNEL && DEPRECATED

  	select DEBUG_INFO
  	select FRAME_POINTER
  	help
  	  If you say Y here, it will be possible to remotely debug the kernel
  	  using gdb. This enlarges your kernel ELF image disk size by several
  	  megabytes and requires a machine with more than 16 MB, better 32 MB
  	  RAM to avoid excessive linking time. This is only useful for kernel
  	  hackers. If unsure, say N.

  	  This is deprecated in favour of KGDB and will be removed in a later
  	  version.

  config GDBSTUB_IMMEDIATE
  	bool "Break into GDB stub immediately"
  	depends on GDBSTUB
  	help
  	  If you say Y here, GDB stub will break into the program as soon as
  	  possible, leaving the program counter at the beginning of
  	  start_kernel() in init/main.c.

  config GDBSTUB_ALLOW_SINGLE_STEP
  	bool "Allow software single-stepping in GDB stub"
  	depends on GDBSTUB && !SMP && !PREEMPT
  	help
  	  Allow GDB stub to perform software single-stepping through the
  	  kernel.  This doesn't work very well on SMP or preemptible kernels as
  	  it uses temporary breakpoints to emulate single-stepping.

  config GDB_CONSOLE
  	bool "Console output to GDB"
  	depends on GDBSTUB
  	help
  	  If you are using GDB for remote debugging over a serial port and
  	  would like kernel messages to be formatted into GDB $O packets so
  	  that GDB prints them as program output, say 'Y'.
  
  config GDBSTUB_DEBUGGING
  	bool "Debug GDB stub by messages to serial port"
  	depends on GDBSTUB
  	help
  	  This causes debugging messages to be displayed at various points
  	  during execution of the GDB stub routines. Such messages will be
  	  displayed on ttyS0 if that isn't the GDB stub's port, or ttySM0
  	  otherwise.
  
  config GDBSTUB_DEBUG_ENTRY
  	bool "Debug GDB stub entry"
  	depends on GDBSTUB_DEBUGGING
  	help
  	  This option causes information to be displayed about entry to or exit
  	  from the main GDB stub routine.
  
  config GDBSTUB_DEBUG_PROTOCOL
  	bool "Debug GDB stub protocol"
  	depends on GDBSTUB_DEBUGGING
  	help
  	  This option causes information to be displayed about the GDB remote
  	  protocol messages generated exchanged with GDB.
  
  config GDBSTUB_DEBUG_IO
  	bool "Debug GDB stub I/O"
  	depends on GDBSTUB_DEBUGGING
  	help
  	  This option causes information to be displayed about GDB stub's
  	  low-level I/O.
  
  config GDBSTUB_DEBUG_BREAKPOINT
  	bool "Debug GDB stub breakpoint management"
  	depends on GDBSTUB_DEBUGGING
  	help
  	  This option causes information to be displayed about GDB stub's
  	  breakpoint management.
  
  choice
  	prompt "GDB stub port"

  	default GDBSTUB_ON_TTYSM0

  	depends on GDBSTUB
  	help
  	  Select the serial port used for GDB-stub.
  
  config GDBSTUB_ON_TTYSM0
  	bool "/dev/ttySM0 [SIF0]"
  	depends on MN10300_TTYSM0
  	select GDBSTUB_ON_TTYSMx
  
  config GDBSTUB_ON_TTYSM1
  	bool "/dev/ttySM1 [SIF1]"
  	depends on MN10300_TTYSM1
  	select GDBSTUB_ON_TTYSMx
  
  config GDBSTUB_ON_TTYSM2
  	bool "/dev/ttySM2 [SIF2]"
  	depends on MN10300_TTYSM2
  	select GDBSTUB_ON_TTYSMx
  
  config GDBSTUB_ON_TTYS0
  	bool "/dev/ttyS0"
  	select GDBSTUB_ON_TTYSx
  
  config GDBSTUB_ON_TTYS1
  	bool "/dev/ttyS1"
  	select GDBSTUB_ON_TTYSx
  
  endchoice
  
  config GDBSTUB_ON_TTYSMx
  	bool
  	depends on GDBSTUB_ON_TTYSM0 || GDBSTUB_ON_TTYSM1 || GDBSTUB_ON_TTYSM2
  	default y
  
  config GDBSTUB_ON_TTYSx
  	bool
  	depends on GDBSTUB_ON_TTYS0 || GDBSTUB_ON_TTYS1
  	default y
  
  endmenu

  
  config KERNEL_DEBUGGER
  	def_bool y

  	depends on GDBSTUB || KGDB