arch/mn10300/Kconfig.debug

   1 menu "Kernel hacking"
   2
   3 source "lib/Kconfig.debug"
   4
   5 config DEBUG_STACKOVERFLOW
   6         bool "Check for stack overflows"
   7         depends on DEBUG_KERNEL
   8
   9 config DEBUG_DECOMPRESS_KERNEL
  10         bool "Using serial port during decompressing kernel"
  11         depends on DEBUG_KERNEL
  12         default n
  13         help
  14           If you say Y here you will confirm the start and the end of
  15           decompressing Linux seeing "Uncompressing Linux... " and
  16           "Ok, booting the kernel.\n" on console.
  17
  18 config TEST_MISALIGNMENT_HANDLER
  19         bool "Run tests on the misalignment handler"
  20         depends on DEBUG_KERNEL
  21         default n
  22         help
  23           If you say Y here the kernel will execute a list of misaligned memory
  24           accesses to make sure the misalignment handler deals them with
  25           correctly.  If it does not, the kernel will throw a BUG.
  26
  27 config KPROBES
  28         bool "Kprobes"
  29         depends on DEBUG_KERNEL
  30         help
  31           Kprobes allows you to trap at almost any kernel address and
  32           execute a callback function.  register_kprobe() establishes
  33           a probepoint and specifies the callback.  Kprobes is useful
  34           for kernel debugging, non-intrusive instrumentation and testing.
  35           If in doubt, say "N".
  36
  37 config GDBSTUB
  38         bool "Remote GDB kernel debugging"
  39         depends on DEBUG_KERNEL
  40         select DEBUG_INFO
  41         select FRAME_POINTER
  42         help
  43           If you say Y here, it will be possible to remotely debug the kernel
  44           using gdb. This enlarges your kernel ELF image disk size by several
  45           megabytes and requires a machine with more than 16 MB, better 32 MB
  46           RAM to avoid excessive linking time. This is only useful for kernel
  47           hackers. If unsure, say N.
  48
  49 config GDBSTUB_IMMEDIATE
  50         bool "Break into GDB stub immediately"
  51         depends on GDBSTUB
  52         help
  53           If you say Y here, GDB stub will break into the program as soon as
  54           possible, leaving the program counter at the beginning of
  55           start_kernel() in init/main.c.
  56
  57 config GDBSTUB_ALLOW_SINGLE_STEP
  58         bool "Allow software single-stepping in GDB stub"
  59         depends on GDBSTUB && !SMP && !PREEMPT
  60         help
  61           Allow GDB stub to perform software single-stepping through the
  62           kernel.  This doesn't work very well on SMP or preemptible kernels as
  63           it uses temporary breakpoints to emulate single-stepping.
  64
  65 config GDB_CONSOLE
  66         bool "Console output to GDB"
  67         depends on GDBSTUB
  68         help
  69           If you are using GDB for remote debugging over a serial port and
  70           would like kernel messages to be formatted into GDB $O packets so
  71           that GDB prints them as program output, say 'Y'.
  72
  73 config GDBSTUB_DEBUGGING
  74         bool "Debug GDB stub by messages to serial port"
  75         depends on GDBSTUB
  76         help
  77           This causes debugging messages to be displayed at various points
  78           during execution of the GDB stub routines. Such messages will be
  79           displayed on ttyS0 if that isn't the GDB stub's port, or ttySM0
  80           otherwise.
  81
  82 config GDBSTUB_DEBUG_ENTRY
  83         bool "Debug GDB stub entry"
  84         depends on GDBSTUB_DEBUGGING
  85         help
  86           This option causes information to be displayed about entry to or exit
  87           from the main GDB stub routine.
  88
  89 config GDBSTUB_DEBUG_PROTOCOL
  90         bool "Debug GDB stub protocol"
  91         depends on GDBSTUB_DEBUGGING
  92         help
  93           This option causes information to be displayed about the GDB remote
  94           protocol messages generated exchanged with GDB.
  95
  96 config GDBSTUB_DEBUG_IO
  97         bool "Debug GDB stub I/O"
  98         depends on GDBSTUB_DEBUGGING
  99         help
 100           This option causes information to be displayed about GDB stub's
 101           low-level I/O.
 102
 103 config GDBSTUB_DEBUG_BREAKPOINT
 104         bool "Debug GDB stub breakpoint management"
 105         depends on GDBSTUB_DEBUGGING
 106         help
 107           This option causes information to be displayed about GDB stub's
 108           breakpoint management.
 109
 110 choice
 111         prompt "GDB stub port"
 112         default GDBSTUB_ON_TTYSM0
 113         depends on GDBSTUB
 114         help
 115           Select the serial port used for GDB-stub.
 116
 117 config GDBSTUB_ON_TTYSM0
 118         bool "/dev/ttySM0 [SIF0]"
 119         depends on MN10300_TTYSM0
 120         select GDBSTUB_ON_TTYSMx
 121
 122 config GDBSTUB_ON_TTYSM1
 123         bool "/dev/ttySM1 [SIF1]"
 124         depends on MN10300_TTYSM1
 125         select GDBSTUB_ON_TTYSMx
 126
 127 config GDBSTUB_ON_TTYSM2
 128         bool "/dev/ttySM2 [SIF2]"
 129         depends on MN10300_TTYSM2
 130         select GDBSTUB_ON_TTYSMx
 131
 132 config GDBSTUB_ON_TTYS0
 133         bool "/dev/ttyS0"
 134         select GDBSTUB_ON_TTYSx
 135
 136 config GDBSTUB_ON_TTYS1
 137         bool "/dev/ttyS1"
 138         select GDBSTUB_ON_TTYSx
 139
 140 endchoice
 141
 142 config GDBSTUB_ON_TTYSMx
 143         bool
 144         depends on GDBSTUB_ON_TTYSM0 || GDBSTUB_ON_TTYSM1 || GDBSTUB_ON_TTYSM2
 145         default y
 146
 147 config GDBSTUB_ON_TTYSx
 148         bool
 149         depends on GDBSTUB_ON_TTYS0 || GDBSTUB_ON_TTYS1
 150         default y
 151
 152 endmenu
 153
 154 config KERNEL_DEBUGGER
 155         def_bool y
 156         depends on GDBSTUB || KGDB