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Linux/arch/mn10300/Kconfig.debug

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

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