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_break.h

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    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: releng/11.0/sys/ddb/db_break.h 263973 2014-03-31 16:37:41Z pfg $
   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_ */

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