sys/ddb/ddb.h

   1 /*-
   2  * Copyright (c) 1993, Garrett A. Wollman.
   3  * Copyright (c) 1993, University of Vermont and State Agricultural College.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. Neither the name of the University nor the names of its contributors
  15  *    may be used to endorse or promote products derived from this software
  16  *    without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  28  * SUCH DAMAGE.
  29  *
  30  * $FreeBSD$
  31  */
  32
  33 /*
  34  * Necessary declarations for the `ddb' kernel debugger.
  35  */
  36
  37 #ifndef _DDB_DDB_H_
  38 #define _DDB_DDB_H_
  39
  40 #include <machine/db_machdep.h>         /* type definitions */
  41
  42 #define DB_LINES_PER_PAGE       20
  43
  44 typedef void db_cmdfcn_t(db_expr_t addr, boolean_t have_addr, db_expr_t count,
  45             char *modif);
  46
  47 typedef void db_page_calloutfcn_t(void *arg);
  48
  49 #define DB_COMMAND(cmd_name, func_name) \
  50         DB_SET(cmd_name, func_name, db_cmd_set, 0, NULL)
  51 #define DB_SHOW_COMMAND(cmd_name, func_name) \
  52         DB_SET(cmd_name, func_name, db_show_cmd_set, 0, NULL)
  53
  54 #define DB_SET(cmd_name, func_name, set, flag, more)            \
  55 static db_cmdfcn_t      func_name;                              \
  56                                                                 \
  57 static const struct command __CONCAT(func_name,_cmd) = {        \
  58         __STRING(cmd_name),                                     \
  59         func_name,                                              \
  60         flag,                                                   \
  61         more                                                    \
  62 };                                                              \
  63 TEXT_SET(set, __CONCAT(func_name,_cmd));                        \
  64                                                                 \
  65 static void                                                     \
  66 func_name(addr, have_addr, count, modif)                        \
  67         db_expr_t addr;                                         \
  68         boolean_t have_addr;                                    \
  69         db_expr_t count;                                        \
  70         char *modif;
  71
  72 extern char *esym;
  73 extern db_expr_t db_maxoff;
  74 extern int db_active;
  75 extern int db_indent;
  76 extern int db_inst_count;
  77 extern int db_load_count;
  78 extern int debugger_on_panic;
  79 extern int db_store_count;
  80 extern db_expr_t db_radix;
  81 extern db_expr_t db_max_width;
  82 extern db_expr_t db_tab_stop_width;
  83
  84 struct vm_map;
  85
  86 #ifdef ALT_BREAK_TO_DEBUGGER
  87 int             db_alt_break(int, int *);
  88 #endif
  89 void            db_check_interrupt(void);
  90 void            db_clear_watchpoints(void);
  91 db_addr_t       db_disasm(db_addr_t loc, boolean_t altfmt);
  92                                 /* instruction disassembler */
  93 void            db_error(const char *s);
  94 int             db_expression(db_expr_t *valuep);
  95 int             db_get_variable(db_expr_t *valuep);
  96 void            db_iprintf(const char *,...) __printflike(1, 2);
  97 struct vm_map   *db_map_addr(vm_offset_t);
  98 boolean_t       db_map_current(struct vm_map *);
  99 boolean_t       db_map_equal(struct vm_map *, struct vm_map *);
 100 void            db_print_loc_and_inst(db_addr_t loc);
 101 void            db_printf(const char *fmt, ...) __printflike(1, 2);
 102 void            db_read_bytes(vm_offset_t addr, size_t size, char *data);
 103                                 /* machine-dependent */
 104 int             db_readline(char *lstart, int lsize);
 105 void            db_restart_at_pc(boolean_t watchpt);
 106 void            db_set_watchpoints(void);
 107 void            db_setup_paging(db_page_calloutfcn_t *callout, void *arg,
 108                                 int maxlines);
 109 void            db_skip_to_eol(void);
 110 boolean_t       db_stop_at_pc(boolean_t *is_breakpoint);
 111 #define         db_strcpy       strcpy
 112 void            db_trap(int type, int code);
 113 int             db_value_of_name(const char *name, db_expr_t *valuep);
 114 void            db_write_bytes(vm_offset_t addr, size_t size, char *data);
 115                                 /* machine-dependent */
 116 void            db_stack_thread(db_expr_t addr, boolean_t have_addr,
 117                                 db_expr_t count, char *modif);
 118 void            kdb_init(void);
 119
 120 db_cmdfcn_t     db_breakpoint_cmd;
 121 db_cmdfcn_t     db_continue_cmd;
 122 db_cmdfcn_t     db_delete_cmd;
 123 db_cmdfcn_t     db_deletehwatch_cmd;
 124 db_cmdfcn_t     db_deletewatch_cmd;
 125 db_cmdfcn_t     db_examine_cmd;
 126 db_cmdfcn_t     db_hwatchpoint_cmd;
 127 db_cmdfcn_t     db_listbreak_cmd;
 128 db_cmdfcn_t     db_print_cmd;
 129 db_cmdfcn_t     db_ps;
 130 db_cmdfcn_t     db_search_cmd;
 131 db_cmdfcn_t     db_set_cmd;
 132 db_cmdfcn_t     db_show_regs;
 133 db_cmdfcn_t     db_single_step_cmd;
 134 db_cmdfcn_t     db_stack_trace_cmd;
 135 db_cmdfcn_t     db_trace_until_call_cmd;
 136 db_cmdfcn_t     db_trace_until_matching_cmd;
 137 db_cmdfcn_t     db_watchpoint_cmd;
 138 db_cmdfcn_t     db_write_cmd;
 139 db_cmdfcn_t     db_show_one_thread;
 140
 141 #if 0
 142 db_cmdfcn_t     db_help_cmd;
 143 db_cmdfcn_t     db_show_all_threads;
 144 db_cmdfcn_t     ipc_port_print;
 145 db_cmdfcn_t     vm_page_print;
 146 #endif
 147
 148 db_page_calloutfcn_t db_simple_pager;
 149
 150 /* Scare the user with backtrace of curthread to console. */
 151 void            db_print_backtrace(void);
 152
 153 /*
 154  * Command table.
 155  */
 156 struct command {
 157         char *  name;           /* command name */
 158         db_cmdfcn_t *fcn;       /* function to call */
 159         int     flag;           /* extra info: */
 160 #define CS_OWN          0x1     /* non-standard syntax */
 161 #define CS_MORE         0x2     /* standard syntax, but may have other words
 162                                  * at end */
 163 #define CS_SET_DOT      0x100   /* set dot after command */
 164         struct command *more;   /* another level of command */
 165 };
 166
 167 /* XXX: UGLY hack */
 168 #ifdef CN_DEAD
 169 /*
 170  * Routines to support GDB on an sio port.
 171  */
 172 extern void      *gdb_arg;
 173 extern cn_getc_t *gdb_getc;
 174 extern cn_putc_t *gdb_putc;
 175 #endif
 176
 177 #endif /* !_DDB_DDB_H_ */