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155 lines
4.3 KiB
155 lines
4.3 KiB
menu "Kernel hacking" |
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source "lib/Kconfig.debug" |
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config DEBUG_DECOMPRESS_KERNEL |
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bool "Using serial port during decompressing kernel" |
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depends on DEBUG_KERNEL |
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default n |
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help |
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If you say Y here you will confirm the start and the end of |
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decompressing Linux seeing "Uncompressing Linux... " and |
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"Ok, booting the kernel.\n" on console. |
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config TEST_MISALIGNMENT_HANDLER |
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bool "Run tests on the misalignment handler" |
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depends on DEBUG_KERNEL |
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default n |
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help |
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If you say Y here the kernel will execute a list of misaligned memory |
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accesses to make sure the misalignment handler deals them with |
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correctly. If it does not, the kernel will throw a BUG. |
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config KPROBES |
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bool "Kprobes" |
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depends on DEBUG_KERNEL |
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help |
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Kprobes allows you to trap at almost any kernel address and |
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execute a callback function. register_kprobe() establishes |
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a probepoint and specifies the callback. Kprobes is useful |
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for kernel debugging, non-intrusive instrumentation and testing. |
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If in doubt, say "N". |
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config GDBSTUB |
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bool "Remote GDB kernel debugging" |
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depends on DEBUG_KERNEL && DEPRECATED |
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select DEBUG_INFO |
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select FRAME_POINTER |
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help |
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If you say Y here, it will be possible to remotely debug the kernel |
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using gdb. This enlarges your kernel ELF image disk size by several |
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megabytes and requires a machine with more than 16 MB, better 32 MB |
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RAM to avoid excessive linking time. This is only useful for kernel |
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hackers. If unsure, say N. |
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This is deprecated in favour of KGDB and will be removed in a later |
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version. |
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config GDBSTUB_IMMEDIATE |
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bool "Break into GDB stub immediately" |
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depends on GDBSTUB |
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help |
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If you say Y here, GDB stub will break into the program as soon as |
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possible, leaving the program counter at the beginning of |
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start_kernel() in init/main.c. |
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config GDBSTUB_ALLOW_SINGLE_STEP |
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bool "Allow software single-stepping in GDB stub" |
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depends on GDBSTUB && !SMP && !PREEMPT |
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help |
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Allow GDB stub to perform software single-stepping through the |
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kernel. This doesn't work very well on SMP or preemptible kernels as |
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it uses temporary breakpoints to emulate single-stepping. |
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config GDB_CONSOLE |
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bool "Console output to GDB" |
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depends on GDBSTUB |
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help |
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If you are using GDB for remote debugging over a serial port and |
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would like kernel messages to be formatted into GDB $O packets so |
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that GDB prints them as program output, say 'Y'. |
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config GDBSTUB_DEBUGGING |
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bool "Debug GDB stub by messages to serial port" |
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depends on GDBSTUB |
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help |
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This causes debugging messages to be displayed at various points |
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during execution of the GDB stub routines. Such messages will be |
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displayed on ttyS0 if that isn't the GDB stub's port, or ttySM0 |
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otherwise. |
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config GDBSTUB_DEBUG_ENTRY |
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bool "Debug GDB stub entry" |
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depends on GDBSTUB_DEBUGGING |
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help |
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This option causes information to be displayed about entry to or exit |
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from the main GDB stub routine. |
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config GDBSTUB_DEBUG_PROTOCOL |
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bool "Debug GDB stub protocol" |
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depends on GDBSTUB_DEBUGGING |
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help |
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This option causes information to be displayed about the GDB remote |
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protocol messages generated exchanged with GDB. |
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config GDBSTUB_DEBUG_IO |
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bool "Debug GDB stub I/O" |
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depends on GDBSTUB_DEBUGGING |
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help |
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This option causes information to be displayed about GDB stub's |
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low-level I/O. |
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config GDBSTUB_DEBUG_BREAKPOINT |
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bool "Debug GDB stub breakpoint management" |
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depends on GDBSTUB_DEBUGGING |
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help |
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This option causes information to be displayed about GDB stub's |
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breakpoint management. |
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choice |
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prompt "GDB stub port" |
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default GDBSTUB_ON_TTYSM0 |
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depends on GDBSTUB |
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help |
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Select the serial port used for GDB-stub. |
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config GDBSTUB_ON_TTYSM0 |
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bool "/dev/ttySM0 [SIF0]" |
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depends on MN10300_TTYSM0 |
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select GDBSTUB_ON_TTYSMx |
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config GDBSTUB_ON_TTYSM1 |
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bool "/dev/ttySM1 [SIF1]" |
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depends on MN10300_TTYSM1 |
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select GDBSTUB_ON_TTYSMx |
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config GDBSTUB_ON_TTYSM2 |
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bool "/dev/ttySM2 [SIF2]" |
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depends on MN10300_TTYSM2 |
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select GDBSTUB_ON_TTYSMx |
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config GDBSTUB_ON_TTYS0 |
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bool "/dev/ttyS0" |
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select GDBSTUB_ON_TTYSx |
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config GDBSTUB_ON_TTYS1 |
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bool "/dev/ttyS1" |
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select GDBSTUB_ON_TTYSx |
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endchoice |
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config GDBSTUB_ON_TTYSMx |
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bool |
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depends on GDBSTUB_ON_TTYSM0 || GDBSTUB_ON_TTYSM1 || GDBSTUB_ON_TTYSM2 |
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default y |
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config GDBSTUB_ON_TTYSx |
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bool |
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depends on GDBSTUB_ON_TTYS0 || GDBSTUB_ON_TTYS1 |
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default y |
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endmenu |
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config KERNEL_DEBUGGER |
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def_bool y |
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depends on GDBSTUB || KGDB
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