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26 .\" $FreeBSD: src/share/man/man9/DB_COMMAND.9,v 1.6 2012/05/20 16:43:47 gjb Exp $
35 .Nd Extends the ddb command set
47 .Fn DB_SHOW_COMMAND "command_name" "command_function"
53 to the list of top-level commands.
57 .Fa command_function .
63 which allows for specifying an additional
68 is roughly equivalent to
72 is a sub-command of the ddb
76 The general command syntax:
77 .Cm command Ns Op Li \&/ Ns Ar modifier
78 .Ar address Ns Op Li , Ns Ar count ,
79 translates into the following parameters for
80 .Fa command_function :
81 .Bl -tag -width Fa -offset indent
83 The address passed to the command as an argument.
85 A boolean value that is true if the addr field is valid.
87 The number of quad words starting at offset
89 that the command must process.
91 A pointer to the string of modifiers.
92 That is, a series of symbols used to pass some options to the command.
95 command will display words in decimal form if it is passed the modifier "d".
98 In your module, the command is declared as:
100 DB_COMMAND(mycmd, my_cmd_func)
103 db_printf("Calling my command with address %p\en", addr);
111 Calling my command with address 0x1000
118 This manual page was written by
119 .An Guillaume Ballet Aq Mt gballet@gmail.com .