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

     /* 
      * Mach Operating System
      * Copyright (c) 1993,1992,1991,1990 Carnegie Mellon University
      * All Rights Reserved.
      * 
      * Permission to use, copy, modify and distribute this software and its
      * documentation is hereby granted, provided that both the copyright
      * notice and this permission notice appear in all copies of the
      * software, derivative works or modified versions, and any portions
     * thereof, and that both notices appear in supporting documentation.
     * 
     * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
     * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     * 
     * Carnegie Mellon requests users of this software to return to
     * 
     *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
     *  School of Computer Science
     *  Carnegie Mellon University
     *  Pittsburgh PA 15213-3890
     * 
     * any improvements or extensions that they make and grant Carnegie Mellon
     * the rights to redistribute these changes.
     */
    /*
     * HISTORY
     * $Log:        db_break.h,v $
     * Revision 2.8  93/11/17  16:20:20  dbg
     *      Added declarations for conditional breakpoint routines.
     *      [93/10/08            dbg]
     * 
     * Revision 2.7  93/01/14  17:24:37  danner
     *      64bit cleanup. Enabled prototypes.
     *      [92/11/30            af]
     * 
     * Revision 2.6  91/10/09  15:58:03  af
     *      Added db_thread_breakpoint structure, and added task and threads
     *      field to db_breakpoint structure.  Some status flags were also
     *      added to keep track user space break point correctly.
     *      [91/08/29            tak]
     * 
     * Revision 2.5  91/05/14  15:32:35  mrt
     *      Correcting copyright
     * 
     * Revision 2.4  91/02/05  17:06:06  mrt
     *      Changed to new Mach copyright
     *      [91/01/31  16:17:10  mrt]
     * 
     * Revision 2.3  90/10/25  14:43:40  rwd
     *      Added map field to breakpoints.
     *      [90/10/18            rpd]
     * 
     * Revision 2.2  90/08/27  21:50:00  dbg
     *      Modularized typedef names.
     *      [90/08/20            af]
     *      Add external defintions.
     *      [90/08/07            dbg]
     *      Created.
     *      [90/07/25            dbg]
     * 
     */
    /*
     *      Author: David B. Golub, Carnegie Mellon University
     *      Date:   7/90
     */
    #ifndef _DDB_DB_BREAK_H_
    #define _DDB_DB_BREAK_H_
    
    #include <machine/db_machdep.h>
    #include <kern/thread.h>
    #include <kern/task.h>
    #include <mach/boolean.h>
    
    /*
     * thread list at the same breakpoint address
     */
    struct db_thread_breakpoint {
            vm_offset_t tb_task_thd;                /* target task or thread */
            boolean_t tb_is_task;                   /* task qualified */
            short    tb_number;                     /* breakpoint number */
            short    tb_init_count;                 /* skip count(initial value) */
            short    tb_count;                      /* current skip count */
            short    tb_cond;                       /* break condition */
            struct   db_thread_breakpoint *tb_next; /* next chain */
    };
    
    typedef struct db_thread_breakpoint *db_thread_breakpoint_t;
    
    /*
     * Breakpoint.
     */
    
    struct db_breakpoint {
            task_t    task;                 /* target task */
            db_addr_t address;              /* set here */
            db_thread_breakpoint_t threads; /* thread */
            int     flags;                  /* flags: */
    #define BKPT_SINGLE_STEP        0x2     /* to simulate single step */
   #define BKPT_TEMP               0x4     /* temporary */
   #define BKPT_USR_GLOBAL         0x8     /* global user space break point */
   #define BKPT_SET_IN_MEM         0x10    /* break point is set in memory */
   #define BKPT_1ST_SET            0x20    /* 1st time set of user global bkpt */
           vm_size_t       bkpt_inst;      /* saved instruction at bkpt */
           struct db_breakpoint *link;     /* link in in-use or free chain */
   };
   
   typedef struct db_breakpoint *db_breakpoint_t;
   
   extern db_breakpoint_t  db_find_breakpoint( task_t task, db_addr_t addr);
   extern boolean_t        db_find_breakpoint_here( task_t task, db_addr_t addr);
   extern void             db_set_breakpoints(void);
   extern void             db_clear_breakpoints(void);
   extern db_thread_breakpoint_t   db_find_thread_breakpoint_here
                                           ( task_t task, db_addr_t addr );
   extern db_thread_breakpoint_t   db_find_breakpoint_number
                                           ( int num, db_breakpoint_t *bkptp);
   extern void             db_check_breakpoint_valid(void);
   
   extern db_breakpoint_t  db_set_temp_breakpoint( task_t task, db_addr_t addr);
   extern void             db_delete_temp_breakpoint
                                           ( task_t task, db_breakpoint_t bkpt);
   
   extern void             db_cond_free(db_thread_breakpoint_t bkpt);
   extern boolean_t        db_cond_check(db_thread_breakpoint_t bkpt);
   extern void             db_cond_print(db_thread_breakpoint_t bkpt);
   
   extern void             db_breakpoint_cmd(
                               db_expr_t addr, boolean_t have_addr,
                               db_expr_t count, char *modif);
   extern void             db_delete_cmd();
   extern void             db_listbreak_cmd();
   
   extern void             db_cond_cmd();
   
   #endif  /* _DDB_DB_BREAK_H_ */

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