sys/ddb/db_break.h

   1 /*-
   2  * Mach Operating System
   3  * Copyright (c) 1991,1990 Carnegie Mellon University
   4  * All Rights Reserved.
   5  *
   6  * Permission to use, copy, modify and distribute this software and its
   7  * documentation is hereby granted, provided that both the copyright
   8  * notice and this permission notice appear in all copies of the
   9  * software, derivative works or modified versions, and any portions
  10  * thereof, and that both notices appear in supporting documentation.
  11  *
  12  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
  13  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  14  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  15  *
  16  * Carnegie Mellon requests users of this software to return to
  17  *
  18  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  19  *  School of Computer Science
  20  *  Carnegie Mellon University
  21  *  Pittsburgh PA 15213-3890
  22  *
  23  * any improvements or extensions that they make and grant Carnegie the
  24  * rights to redistribute these changes.
  25  *
  26  * $FreeBSD$
  27  */
  28
  29 /*
  30  *      Author: David B. Golub, Carnegie Mellon University
  31  *      Date:   7/90
  32  */
  33 #ifndef _DDB_DB_BREAK_H_
  34 #define _DDB_DB_BREAK_H_
  35
  36 /*
  37  * Breakpoint.
  38  */
  39
  40 #ifndef BKPT_INST_TYPE
  41 #define BKPT_INST_TYPE int
  42 #endif
  43
  44 struct db_breakpoint {
  45         vm_map_t map;                   /* in this map */
  46         db_addr_t address;              /* set here */
  47         int     init_count;             /* number of times to skip bkpt */
  48         int     count;                  /* current count */
  49         int     flags;                  /* flags: */
  50 #define BKPT_SINGLE_STEP        0x2         /* to simulate single step */
  51 #define BKPT_TEMP               0x4         /* temporary */
  52         BKPT_INST_TYPE bkpt_inst;       /* saved instruction at bkpt */
  53         struct db_breakpoint *link;     /* link in in-use or free chain */
  54 };
  55 typedef struct db_breakpoint *db_breakpoint_t;
  56
  57 void            db_clear_breakpoints(void);
  58 #ifdef SOFTWARE_SSTEP
  59 void            db_delete_temp_breakpoint(db_breakpoint_t);
  60 #endif
  61 db_breakpoint_t db_find_breakpoint_here(db_addr_t addr);
  62 void            db_set_breakpoints(void);
  63 #ifdef SOFTWARE_SSTEP
  64 db_breakpoint_t db_set_temp_breakpoint(db_addr_t);
  65 #endif
  66
  67 #endif /* !_DDB_DB_BREAK_H_ */