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: src/sys/ddb/db_break.h,v 1.12 1999/08/28 00:41:06 peter Exp $
  27  * $DragonFly: src/sys/ddb/db_break.h,v 1.4 2006/05/20 02:42:01 dillon Exp $
  28  */
  29
  30 /*
  31  *      Author: David B. Golub, Carnegie Mellon University
  32  *      Date:   7/90
  33  */
  34
  35 #ifndef _DDB_DB_BREAK_H_
  36 #define _DDB_DB_BREAK_H_
  37
  38 #ifndef _DDB_DDB_H_
  39 #include <ddb/ddb.h>
  40 #endif
  41 #ifndef _VM_VM_MAP_H_
  42 #include <vm/vm_map.h>
  43 #endif
  44
  45 /*
  46  * Breakpoint.
  47  */
  48
  49 struct db_breakpoint {
  50         vm_map_t map;                   /* in this map */
  51         db_addr_t address;              /* set here */
  52         int     init_count;             /* number of times to skip bkpt */
  53         int     count;                  /* current count */
  54         int     flags;                  /* flags: */
  55 #define BKPT_SINGLE_STEP        0x2         /* to simulate single step */
  56 #define BKPT_TEMP               0x4         /* temporary */
  57         int     bkpt_inst;              /* saved instruction at bkpt */
  58         struct db_breakpoint *link;     /* link in in-use or free chain */
  59 };
  60 typedef struct db_breakpoint *db_breakpoint_t;
  61
  62 #ifdef _KERNEL
  63
  64 void            db_clear_breakpoints (void);
  65 #ifdef SOFTWARE_SSTEP
  66 void            db_delete_temp_breakpoint (db_breakpoint_t);
  67 #endif
  68 db_breakpoint_t db_find_breakpoint_here (db_addr_t addr);
  69 void            db_set_breakpoints (void);
  70 #ifdef SOFTWARE_SSTEP
  71 db_breakpoint_t db_set_temp_breakpoint (db_addr_t);
  72 #endif
  73
  74 #endif
  75
  76 #endif /* !_DDB_DB_BREAK_H_ */