| 1 | .TH MDB 1
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| 2 | .SH NAME
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| 3 | mdb \- Minix debugger
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| 4 | .SH SYNOPSIS
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| 5 | .B mdb
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| 6 | .RB [ \-fc ]
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| 7 | .I file
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| 8 | .br
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| 9 | .B mdb
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| 10 | .BR [-L|-l]log\-file
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| 11 | .I exec-file
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| 12 | .RI [ core\-file ]
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| 13 | .RI [ @command\-file ]
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| 14 | .SH DESCRIPTION
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| 15 | .de SP
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| 16 | .if t .sp 0.4
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| 17 | .if n .sp
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| 18 | ..
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| 19 | .B mdb
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| 20 | is the Minix debugger.
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| 21 | .SH OPTIONS
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| 22 | Its command line options are:
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| 23 | .TP
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| 24 | .B \-f
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| 25 | Just examine the specified file.
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| 26 | .TP
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| 27 | .B \-c
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| 28 | Examine 'core' file. No exec-file will be supplied.
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| 29 | .TP
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| 30 | .B \-Llog\-file
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| 31 | Log to file only
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| 32 | .TP
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| 33 | .B \-llog\-file
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| 34 | Log to file.
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| 35 | .SP
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| 36 | .IR exec\-file
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| 37 | Unless the -c option has been specified, the exec-file is required.
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| 38 | .SP
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| 39 | .IR core\-file
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| 40 | The core-file is optional.
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| 41 | .SP
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| 42 | If the core-file is supplied,
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| 43 | .B mdb
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| 44 | assumes that the user wishes to examine the core file.
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| 45 | Otherwise
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| 46 | .B mdb
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| 47 | assumes that the user will run the exec-file and trace it.
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| 48 | .SP
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| 49 | .IR @command\-file
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| 50 | .B mdb
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| 51 | executes command from command-file.
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| 52 | .SH OVERVIEW
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| 53 | .br
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| 54 | .B mdb
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| 55 | commands are of the form:
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| 56 | .I [ expression ]
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| 57 | .I command
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| 58 | .SP
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| 59 | .I expression
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| 60 | can be of the form:
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| 61 | .IP
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| 62 | .I address
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| 63 | which defaults to text segment
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| 64 | .IP
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| 65 | address
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| 66 | .I overriden
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| 67 | by
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| 68 | .I T:
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| 69 | for Text segment
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| 70 | or
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| 71 | .I D:
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| 72 | for Data segment
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| 73 | or
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| 74 | .I S:
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| 75 | for Stack segment
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| 76 | .IP
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| 77 | .I symbol
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| 78 | where
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| 79 | .B mdb
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| 80 | does a lookup for the symbol first as a
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| 81 | .I text
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| 82 | symbol and then as a
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| 83 | .I data
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| 84 | symbol.
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| 85 | .SP
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| 86 | .TP
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| 87 | .I command
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| 88 | .SP
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| 89 | The help command is ?.
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| 90 | .SP
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| 91 | For detailed help on a command type:
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| 92 | .I command ?.
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| 93 | .SP
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| 94 | A semi-colon can be used to separate commands on a line.
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| 95 | .SP
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| 96 | .SH MDB COMMANDS
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| 97 | .SP
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| 98 | ! Shell escape
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| 99 | .SP
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| 100 | # Set Variable or register
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| 101 | .SP
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| 102 | Tt Current call / Backtrace all
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| 103 | .SP
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| 104 | /nsf Display for n size s with format f
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| 105 | .SP
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| 106 | Xx [n] Disasm / & display reg for n instructions
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| 107 | .SP
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| 108 | Rr a Run / with arguments a
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| 109 | .SP
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| 110 | Cc [n] Continue with current signal / no signal n times
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| 111 | .SP
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| 112 | Ii [n] Single step with / no signal for n instructions
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| 113 | .SP
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| 114 | Mm t n Trace until / Stop when modified t type for n instructions
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| 115 | .SP
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| 116 | k Kill
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| 117 | .SP
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| 118 | Bb Display / Set Break-pt
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| 119 | .SP
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| 120 | Dd Delete all / one break-points
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| 121 | .SP
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| 122 | P Toggle Pagging
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| 123 | .SP
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| 124 | Ll name Log to file name / and to standard output
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| 125 | .SP
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| 126 | Vv Toggle debug flag / Version info
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| 127 | .SP
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| 128 | V Version info
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| 129 | .SP
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| 130 | e [t] List symbols for type t
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| 131 | .SP
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| 132 | y Print segment mappings
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| 133 | .SP
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| 134 | s [n] Dump stack for n words
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| 135 | .SP
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| 136 | z [a] Trace syscalls with address a
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| 137 | .SP
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| 138 | ? Help - short help
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| 139 | .SP
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| 140 | @ file Execute commands from file
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| 141 | .SP
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| 142 | Qq Quit / and kill traced process
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| 143 | .SP
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| 144 | .SH "SEE ALSO"
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| 145 | .SP
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| 146 | trace(2).
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| 147 | .SH DIAGNOSTICS
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| 148 |
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| 149 | .SH NOTES
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| 150 |
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| 151 | .SH BUGS
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| 152 |
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| 153 | .SH AUTHOR
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| 154 | Philip Murton and others
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