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

     /*-
      * Copyright (c) 1993, Garrett A. Wollman.
      * Copyright (c) 1993, University of Vermont and State Agricultural College.
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. Neither the name of the University nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * $FreeBSD: releng/5.2/sys/ddb/ddb.h 118268 2003-07-31 17:27:52Z jhb $
     */
    
    /*
     * Necessary declarations for the `ddb' kernel debugger.
     */
    
    #ifndef _DDB_DDB_H_
    #define _DDB_DDB_H_
    
    #include <machine/db_machdep.h>         /* type definitions */
    
    #define DB_LINES_PER_PAGE       20
    
    typedef void db_cmdfcn_t(db_expr_t addr, boolean_t have_addr, db_expr_t count,
                char *modif);
    
    typedef void db_page_calloutfcn_t(void *arg);
    
    #define DB_COMMAND(cmd_name, func_name) \
            DB_SET(cmd_name, func_name, db_cmd_set, 0, NULL)
    #define DB_SHOW_COMMAND(cmd_name, func_name) \
            DB_SET(cmd_name, func_name, db_show_cmd_set, 0, NULL)
    
    #define DB_SET(cmd_name, func_name, set, flag, more)            \
    static db_cmdfcn_t      func_name;                              \
                                                                    \
    static const struct command __CONCAT(func_name,_cmd) = {        \
            __STRING(cmd_name),                                     \
            func_name,                                              \
            flag,                                                   \
            more                                                    \
    };                                                              \
    TEXT_SET(set, __CONCAT(func_name,_cmd));                        \
                                                                    \
    static void                                                     \
    func_name(addr, have_addr, count, modif)                        \
            db_expr_t addr;                                         \
            boolean_t have_addr;                                    \
            db_expr_t count;                                        \
            char *modif;
    
    extern char *esym;
    extern db_expr_t db_maxoff;
    extern int db_active;
    extern int db_indent;
    extern int db_inst_count;
    extern int db_load_count;
    extern int debugger_on_panic;
    extern int db_store_count;
    extern db_expr_t db_radix;
    extern db_expr_t db_max_width;
    extern db_expr_t db_tab_stop_width;
    
    struct vm_map;
    
    #ifdef ALT_BREAK_TO_DEBUGGER
    int             db_alt_break(int, int *);
    #endif
    void            db_check_interrupt(void);
    void            db_clear_watchpoints(void);
    db_addr_t       db_disasm(db_addr_t loc, boolean_t altfmt);
                                    /* instruction disassembler */
    void            db_error(const char *s);
    int             db_expression(db_expr_t *valuep);
    int             db_get_variable(db_expr_t *valuep);
    void            db_iprintf(const char *,...) __printflike(1, 2);
    struct vm_map   *db_map_addr(vm_offset_t);
    boolean_t       db_map_current(struct vm_map *);
    boolean_t       db_map_equal(struct vm_map *, struct vm_map *);
   void            db_print_loc_and_inst(db_addr_t loc);
   void            db_printf(const char *fmt, ...) __printflike(1, 2);
   void            db_read_bytes(vm_offset_t addr, size_t size, char *data);
                                   /* machine-dependent */
   int             db_readline(char *lstart, int lsize);
   void            db_restart_at_pc(boolean_t watchpt);
   void            db_set_watchpoints(void);
   void            db_setup_paging(db_page_calloutfcn_t *callout, void *arg,
                                   int maxlines);
   void            db_skip_to_eol(void);
   boolean_t       db_stop_at_pc(boolean_t *is_breakpoint);
   #define         db_strcpy       strcpy
   void            db_trap(int type, int code);
   int             db_value_of_name(const char *name, db_expr_t *valuep);
   void            db_write_bytes(vm_offset_t addr, size_t size, char *data);
                                   /* machine-dependent */
   void            db_stack_thread(db_expr_t addr, boolean_t have_addr,
                                   db_expr_t count, char *modif);
   void            kdb_init(void);
   
   db_cmdfcn_t     db_breakpoint_cmd;
   db_cmdfcn_t     db_continue_cmd;
   db_cmdfcn_t     db_delete_cmd;
   db_cmdfcn_t     db_deletehwatch_cmd;
   db_cmdfcn_t     db_deletewatch_cmd;
   db_cmdfcn_t     db_examine_cmd;
   db_cmdfcn_t     db_hwatchpoint_cmd;
   db_cmdfcn_t     db_listbreak_cmd;
   db_cmdfcn_t     db_print_cmd;
   db_cmdfcn_t     db_ps;
   db_cmdfcn_t     db_search_cmd;
   db_cmdfcn_t     db_set_cmd;
   db_cmdfcn_t     db_show_regs;
   db_cmdfcn_t     db_single_step_cmd;
   db_cmdfcn_t     db_stack_trace_cmd;
   db_cmdfcn_t     db_trace_until_call_cmd;
   db_cmdfcn_t     db_trace_until_matching_cmd;
   db_cmdfcn_t     db_watchpoint_cmd;
   db_cmdfcn_t     db_write_cmd;
   db_cmdfcn_t     db_show_one_thread;
   
   #if 0
   db_cmdfcn_t     db_help_cmd;
   db_cmdfcn_t     db_show_all_threads;
   db_cmdfcn_t     ipc_port_print;
   db_cmdfcn_t     vm_page_print;
   #endif
   
   db_page_calloutfcn_t db_simple_pager;
   
   /* Scare the user with backtrace of curthread to console. */
   void            db_print_backtrace(void);
   
   /*
    * Command table.
    */
   struct command {
           char *  name;           /* command name */
           db_cmdfcn_t *fcn;       /* function to call */
           int     flag;           /* extra info: */
   #define CS_OWN          0x1     /* non-standard syntax */
   #define CS_MORE         0x2     /* standard syntax, but may have other words
                                    * at end */
   #define CS_SET_DOT      0x100   /* set dot after command */
           struct command *more;   /* another level of command */
   };
   
   /* XXX: UGLY hack */
   #ifdef CN_DEAD
   /*
    * Routines to support GDB on an sio port.
    */
   extern void      *gdb_arg;
   extern cn_getc_t *gdb_getc;
   extern cn_putc_t *gdb_putc;
   #endif
   
   #endif /* !_DDB_DDB_H_ */

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