The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/ddb/db_command.h

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    1 /*      $NetBSD: db_command.h,v 1.33.10.1 2009/01/09 03:32:02 snj Exp $ */
    2 
    3 /*-
    4  * Copyright (c) 1996, 1997, 1998, 1999, 2002 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to The NetBSD Foundation
    8  * by Adam Hamsik.
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   29  * POSSIBILITY OF SUCH DAMAGE.
   30  */
   31 
   32 /*
   33  * Mach Operating System
   34  * Copyright (c) 1991,1990 Carnegie Mellon University
   35  * All Rights Reserved.
   36  *
   37  * Permission to use, copy, modify and distribute this software and its
   38  * documentation is hereby granted, provided that both the copyright
   39  * notice and this permission notice appear in all copies of the
   40  * software, derivative works or modified versions, and any portions
   41  * thereof, and that both notices appear in supporting documentation.
   42  *
   43  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
   44  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
   45  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
   46  *
   47  * Carnegie Mellon requests users of this software to return to
   48  *
   49  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
   50  *  School of Computer Science
   51  *  Carnegie Mellon University
   52  *  Pittsburgh PA 15213-3890
   53  *
   54  * any improvements or extensions that they make and grant Carnegie the
   55  * rights to redistribute these changes.
   56  *
   57  *      Author: David B. Golub, Carnegie Mellon University
   58  *      Date:   7/90
   59  */
   60 
   61 #ifndef _DDB_COMMAND_
   62 #define _DDB_COMMAND_
   63 
   64 void    db_skip_to_eol(void);
   65 void    db_command_loop(void);
   66 void    db_error(const char *) __dead;
   67 
   68 extern db_addr_t db_dot;        /* current location */
   69 extern db_addr_t db_last_addr;  /* last explicit address typed */
   70 extern db_addr_t db_prev;       /* last address examined
   71                                    or written */
   72 extern db_addr_t db_next;       /* next address to be examined
   73                                    or written */
   74 
   75 extern char db_cmd_on_enter[];
   76 
   77 struct db_command;
   78 
   79 
   80 
   81 /*
   82  * Macro include help when DDB_VERBOSE_HELP option(9) is used
   83  */
   84 #ifdef DDB_VERBOSE_HELP
   85 #define DDB_ADD_CMD(name,funct,type,cmd_descr,cmd_arg,arg_desc)\
   86  name,funct,type,cmd_descr,cmd_arg,arg_desc
   87 #else
   88 #define DDB_ADD_CMD(name,funct,type,cmd_descr,cmd_arg,arg_desc)\
   89  name,funct,type
   90 #endif
   91    
   92 
   93 
   94 /*
   95  * we have two types of lists one for base commands like reboot
   96  * and another list for show subcommands.
   97  */
   98 
   99 #define DDB_BASE_CMD 0
  100 #define DDB_SHOW_CMD 1
  101 #define DDB_MACH_CMD 2
  102 
  103 
  104 int db_register_tbl(uint8_t, const struct db_command *);
  105 int db_unregister_tbl(uint8_t, const struct db_command *);
  106 
  107 /*
  108  * Command table
  109  */
  110 struct db_command {
  111         const char      *name;          /* command name */
  112   
  113         /* function to call */
  114         void            (*fcn)(db_expr_t, bool, db_expr_t, const char *);
  115         /*
  116          * Flag is used for modifing command behaviour.
  117          * CS_OWN && CS_MORE are specify type of command arguments.
  118          * CS_OWN commandmanage arguments in own way.
  119          * CS_MORE db_command() prepare argument list.
  120          *
  121          * CS_COMPAT is set for all level 2 commands with level 3 childs (show all pages)
  122          *
  123          * CS_SHOW identify show command in BASE command list
  124          * CS_MACH identify mach command in BASE command list
  125          *
  126          * CS_SET_DOT specify if this command is put to last added command memory.
  127          * CS_NOREPEAT this command does not repeat
  128          */
  129         uint16_t                flag;           /* extra info: */
  130 #define CS_OWN          0x1                     /* non-standard syntax */
  131 #define CS_MORE         0x2                     /* standard syntax, but may have other
  132                                                                         words at end */
  133 #define CS_COMPAT       0x4                     /* is set for compatibilty with old 
  134                                                                         ddb versions*/
  135 #define CS_SHOW         0x8                     /* select show list */
  136 #define CS_MACH         0x10            /* select machine dependent list */
  137 
  138 #define CS_SET_DOT      0x100           /* set dot after command */
  139 #define CS_NOREPEAT     0x200           /* don't set last_command */
  140 #ifdef DDB_VERBOSE_HELP
  141         const char *cmd_descr; /* description of command */
  142         const char *cmd_arg;   /* command arguments */
  143         const char *cmd_arg_help;       /* arguments description */
  144 #endif
  145 };
  146 
  147 #endif /*_DDB_COMMAND_*/
  148 

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