Commit | Line | Data |
---|---|---|
b920de1b DH |
1 | menu "Kernel hacking" |
2 | ||
3 | source "lib/Kconfig.debug" | |
4 | ||
b920de1b DH |
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 | ||
9f555889 DH |
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 | ||
b920de1b DH |
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" | |
1a8d59e5 | 35 | depends on DEBUG_KERNEL && DEPRECATED |
b920de1b DH |
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 | ||
1a8d59e5 DH |
45 | This is deprecated in favour of KGDB and will be removed in a later |
46 | version. | |
47 | ||
b920de1b DH |
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 | ||
9ee21723 DH |
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 | ||
b920de1b DH |
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" | |
95929eff | 111 | default GDBSTUB_ON_TTYSM0 |
b920de1b DH |
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 | |
792576b1 DH |
152 | |
153 | config KERNEL_DEBUGGER | |
154 | def_bool y | |
e460d644 | 155 | depends on GDBSTUB || KGDB |