1 .\" Copyright (c) 2004 Marcel Moolenaar
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35 .Op Fl a | Fl f | Fl fullname
41 .Op Fl c Ar core | Fl n Ar dumpnr | Fl r Ar device
42 .Op Ar kernel Op Ar core
46 utility is a debugger based on
48 that allows debugging of kernel core files.
50 The options are as follows:
51 .Bl -tag -width ".Fl d Ar crashdir"
53 Increase the annotation level.
54 An annotation level of 1 features the historical
58 This is useful when running
65 options are supported for backward compatibility as well.
70 Suppress printing of the banner when the debugger starts.
73 form is supported for compatibility as well.
77 Opens kmem-based targets in read-write mode.
78 (This is identical to what
80 used to do in previous
86 instead of the default,
88 to locate kernel core dump files in.
91 plus the dump number will be appended to determine
92 the actual dump file name.
96 as the core dump file.
98 Use the kernel core dump file numbered
106 to for a remote debugging session.
113 options are mutually exclusive.
115 Optionally, the name of the kernel symbol file and
116 the name of the core dump file can be supplied on the
117 command-line as positional arguments.
118 If no kernel symbol file name has been given, the
119 symbol file of the currently running kernel will be
121 If no core dump file has been specified through either
122 of the options or the last command-line argument,
124 will be opened to allow debugging the currently running
127 .Bl -tag -width ".Pa /var/crash"
129 Default memory image to open if no core dump file
132 Default directory to locate kernel core dump files.
139 utility first appeared in its current form in