Commit | Line | Data |
---|---|---|
b920de1b DH |
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 | ||
9f555889 DH |
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 | ||
b920de1b DH |
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" | |
1a8d59e5 | 39 | depends on DEBUG_KERNEL && DEPRECATED |
b920de1b DH |
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 | ||
1a8d59e5 DH |
49 | This is deprecated in favour of KGDB and will be removed in a later |
50 | version. | |
51 | ||
b920de1b DH |
52 | config GDBSTUB_IMMEDIATE |
53 | bool "Break into GDB stub immediately" | |
54 | depends on GDBSTUB | |
55 | help | |
56 | If you say Y here, GDB stub will break into the program as soon as | |
57 | possible, leaving the program counter at the beginning of | |
58 | start_kernel() in init/main.c. | |
59 | ||
9ee21723 DH |
60 | config GDBSTUB_ALLOW_SINGLE_STEP |
61 | bool "Allow software single-stepping in GDB stub" | |
62 | depends on GDBSTUB && !SMP && !PREEMPT | |
63 | help | |
64 | Allow GDB stub to perform software single-stepping through the | |
65 | kernel. This doesn't work very well on SMP or preemptible kernels as | |
66 | it uses temporary breakpoints to emulate single-stepping. | |
67 | ||
b920de1b DH |
68 | config GDB_CONSOLE |
69 | bool "Console output to GDB" | |
70 | depends on GDBSTUB | |
71 | help | |
72 | If you are using GDB for remote debugging over a serial port and | |
73 | would like kernel messages to be formatted into GDB $O packets so | |
74 | that GDB prints them as program output, say 'Y'. | |
75 | ||
76 | config GDBSTUB_DEBUGGING | |
77 | bool "Debug GDB stub by messages to serial port" | |
78 | depends on GDBSTUB | |
79 | help | |
80 | This causes debugging messages to be displayed at various points | |
81 | during execution of the GDB stub routines. Such messages will be | |
82 | displayed on ttyS0 if that isn't the GDB stub's port, or ttySM0 | |
83 | otherwise. | |
84 | ||
85 | config GDBSTUB_DEBUG_ENTRY | |
86 | bool "Debug GDB stub entry" | |
87 | depends on GDBSTUB_DEBUGGING | |
88 | help | |
89 | This option causes information to be displayed about entry to or exit | |
90 | from the main GDB stub routine. | |
91 | ||
92 | config GDBSTUB_DEBUG_PROTOCOL | |
93 | bool "Debug GDB stub protocol" | |
94 | depends on GDBSTUB_DEBUGGING | |
95 | help | |
96 | This option causes information to be displayed about the GDB remote | |
97 | protocol messages generated exchanged with GDB. | |
98 | ||
99 | config GDBSTUB_DEBUG_IO | |
100 | bool "Debug GDB stub I/O" | |
101 | depends on GDBSTUB_DEBUGGING | |
102 | help | |
103 | This option causes information to be displayed about GDB stub's | |
104 | low-level I/O. | |
105 | ||
106 | config GDBSTUB_DEBUG_BREAKPOINT | |
107 | bool "Debug GDB stub breakpoint management" | |
108 | depends on GDBSTUB_DEBUGGING | |
109 | help | |
110 | This option causes information to be displayed about GDB stub's | |
111 | breakpoint management. | |
112 | ||
113 | choice | |
114 | prompt "GDB stub port" | |
95929eff | 115 | default GDBSTUB_ON_TTYSM0 |
b920de1b DH |
116 | depends on GDBSTUB |
117 | help | |
118 | Select the serial port used for GDB-stub. | |
119 | ||
120 | config GDBSTUB_ON_TTYSM0 | |
121 | bool "/dev/ttySM0 [SIF0]" | |
122 | depends on MN10300_TTYSM0 | |
123 | select GDBSTUB_ON_TTYSMx | |
124 | ||
125 | config GDBSTUB_ON_TTYSM1 | |
126 | bool "/dev/ttySM1 [SIF1]" | |
127 | depends on MN10300_TTYSM1 | |
128 | select GDBSTUB_ON_TTYSMx | |
129 | ||
130 | config GDBSTUB_ON_TTYSM2 | |
131 | bool "/dev/ttySM2 [SIF2]" | |
132 | depends on MN10300_TTYSM2 | |
133 | select GDBSTUB_ON_TTYSMx | |
134 | ||
135 | config GDBSTUB_ON_TTYS0 | |
136 | bool "/dev/ttyS0" | |
137 | select GDBSTUB_ON_TTYSx | |
138 | ||
139 | config GDBSTUB_ON_TTYS1 | |
140 | bool "/dev/ttyS1" | |
141 | select GDBSTUB_ON_TTYSx | |
142 | ||
143 | endchoice | |
144 | ||
145 | config GDBSTUB_ON_TTYSMx | |
146 | bool | |
147 | depends on GDBSTUB_ON_TTYSM0 || GDBSTUB_ON_TTYSM1 || GDBSTUB_ON_TTYSM2 | |
148 | default y | |
149 | ||
150 | config GDBSTUB_ON_TTYSx | |
151 | bool | |
152 | depends on GDBSTUB_ON_TTYS0 || GDBSTUB_ON_TTYS1 | |
153 | default y | |
154 | ||
155 | endmenu | |
792576b1 DH |
156 | |
157 | config KERNEL_DEBUGGER | |
158 | def_bool y | |
e460d644 | 159 | depends on GDBSTUB || KGDB |