osfmk/ddb/db_break.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*
  29  * @OSF_COPYRIGHT@
  30  */
  31 /*
  32  * HISTORY
  33  *
  34  * Revision 1.1.1.1  1998/09/22 21:05:47  wsanchez
  35  * Import of Mac OS X kernel (~semeria)
  36  *
  37  * Revision 1.1.1.1  1998/03/07 02:26:09  wsanchez
  38  * Import of OSF Mach kernel (~mburg)
  39  *
  40  * Revision 1.1.18.3  1995/01/06  19:10:05  devrcs
  41  *      mk6 CR668 - 1.3b26 merge
  42  *      64bit cleanup, prototypes.
  43  *      [1994/10/14  03:39:52  dwm]
  44  *
  45  * Revision 1.1.18.2  1994/09/23  01:18:04  ezf
  46  *      change marker to not FREE
  47  *      [1994/09/22  21:09:24  ezf]
  48  *
  49  * Revision 1.1.18.1  1994/06/11  21:11:29  bolinger
  50  *      Merge up to NMK17.2.
  51  *      [1994/06/11  20:03:39  bolinger]
  52  *
  53  * Revision 1.1.16.1  1994/04/11  09:34:32  bernadat
  54  *      Moved db_breakpoint struct declaration from db_break.c
  55  *      to here.
  56  *      [94/03/16            bernadat]
  57  *
  58  * Revision 1.1.12.2  1994/03/17  22:35:24  dwm
  59  *      The infamous name change:  thread_activation + thread_shuttle = thread.
  60  *      [1994/03/17  21:25:41  dwm]
  61  *
  62  * Revision 1.1.12.1  1994/01/12  17:50:30  dwm
  63  *      Coloc: initial restructuring to follow Utah model.
  64  *      [1994/01/12  17:13:00  dwm]
  65  *
  66  * Revision 1.1.4.4  1993/07/27  18:26:51  elliston
  67  *      Add ANSI prototypes.  CR #9523.
  68  *      [1993/07/27  18:10:59  elliston]
  69  *
  70  * Revision 1.1.4.3  1993/06/07  22:06:31  jeffc
  71  *      CR9176 - ANSI C violations: trailing tokens on CPP
  72  *      directives, extra semicolons after decl_ ..., asm keywords
  73  *      [1993/06/07  18:57:06  jeffc]
  74  *
  75  * Revision 1.1.4.2  1993/06/02  23:10:21  jeffc
  76  *      Added to OSF/1 R1.3 from NMK15.0.
  77  *      [1993/06/02  20:55:49  jeffc]
  78  *
  79  * Revision 1.1  1992/09/30  02:24:12  robert
  80  *      Initial revision
  81  *
  82  * $EndLog$
  83  */
  84 /* CMU_HIST */
  85 /*
  86  * Revision 2.6  91/10/09  15:58:03  af
  87  *       Revision 2.5.3.1  91/10/05  13:05:04  jeffreyh
  88  *              Added db_thread_breakpoint structure, and added task and threads
  89  *              field to db_breakpoint structure.  Some status flags were also
  90  *              added to keep track user space break point correctly.
  91  *              [91/08/29            tak]
  92  *
  93  * Revision 2.5.3.1  91/10/05  13:05:04  jeffreyh
  94  *      Added db_thread_breakpoint structure, and added task and threads
  95  *      field to db_breakpoint structure.  Some status flags were also
  96  *      added to keep track user space break point correctly.
  97  *      [91/08/29            tak]
  98  *
  99  * Revision 2.5  91/05/14  15:32:35  mrt
 100  *      Correcting copyright
 101  *
 102  * Revision 2.4  91/02/05  17:06:06  mrt
 103  *      Changed to new Mach copyright
 104  *      [91/01/31  16:17:10  mrt]
 105  *
 106  * Revision 2.3  90/10/25  14:43:40  rwd
 107  *      Added map field to breakpoints.
 108  *      [90/10/18            rpd]
 109  *
 110  * Revision 2.2  90/08/27  21:50:00  dbg
 111  *      Modularized typedef names.
 112  *      [90/08/20            af]
 113  *      Add external defintions.
 114  *      [90/08/07            dbg]
 115  *      Created.
 116  *      [90/07/25            dbg]
 117  *
 118  */
 119 /* CMU_ENDHIST */
 120 /*
 121  * Mach Operating System
 122  * Copyright (c) 1991,1990 Carnegie Mellon University
 123  * All Rights Reserved.
 124  *
 125  * Permission to use, copy, modify and distribute this software and its
 126  * documentation is hereby granted, provided that both the copyright
 127  * notice and this permission notice appear in all copies of the
 128  * software, derivative works or modified versions, and any portions
 129  * thereof, and that both notices appear in supporting documentation.
 130  *
 131  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 132  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
 133  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 134  *
 135  * Carnegie Mellon requests users of this software to return to
 136  *
 137  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 138  *  School of Computer Science
 139  *  Carnegie Mellon University
 140  *  Pittsburgh PA 15213-3890
 141  *
 142  * any improvements or extensions that they make and grant Carnegie Mellon
 143  * the rights to redistribute these changes.
 144  */
 145 /*
 146  */
 147 /*
 148  *      Author: David B. Golub, Carnegie Mellon University
 149  *      Date:   7/90
 150  */
 151 #ifndef _DDB_DB_BREAK_H_
 152 #define _DDB_DB_BREAK_H_
 153
 154 #include <machine/db_machdep.h>
 155 #include <kern/thread.h>
 156 #include <kern/task.h>
 157 #include <mach/boolean.h>
 158
 159 /*
 160  * thread list at the same breakpoint address
 161  */
 162 struct db_thread_breakpoint {
 163         vm_offset_t tb_task_thd;                /* target task or thread */
 164         boolean_t tb_is_task;                   /* task qualified */
 165         short    tb_number;                     /* breakpoint number */
 166         short    tb_init_count;                 /* skip count(initial value) */
 167         short    tb_count;                      /* current skip count */
 168         short    tb_cond;                       /* break condition */
 169         struct   db_thread_breakpoint *tb_next; /* next chain */
 170 };
 171 typedef struct db_thread_breakpoint *db_thread_breakpoint_t;
 172
 173 /*
 174  * Breakpoint.
 175  */
 176 struct db_breakpoint {
 177         task_t    task;                 /* target task */
 178         db_addr_t address;              /* set here */
 179         db_thread_breakpoint_t threads; /* thread */
 180         int     flags;                  /* flags: */
 181 #define BKPT_SINGLE_STEP        0x2     /* to simulate single step */
 182 #define BKPT_TEMP               0x4     /* temporary */
 183 #define BKPT_USR_GLOBAL         0x8     /* global user space break point */
 184 #define BKPT_SET_IN_MEM         0x10    /* break point is set in memory */
 185 #define BKPT_1ST_SET            0x20    /* 1st time set of user global bkpt */
 186         vm_size_t       bkpt_inst;      /* saved instruction at bkpt */
 187         struct db_breakpoint *link;     /* link in in-use or free chain */
 188 };
 189
 190 typedef struct db_breakpoint *db_breakpoint_t;
 191
 192
 193 /*
 194  * Prototypes for functions exported by this module.
 195  */
 196
 197 db_thread_breakpoint_t db_find_thread_breakpoint_here(
 198         task_t          task,
 199         db_addr_t       addr);
 200
 201 void db_check_breakpoint_valid(void);
 202
 203 void db_set_breakpoint(
 204         task_t          task,
 205         db_addr_t       addr,
 206         int             count,
 207         thread_t        thr_act,
 208         boolean_t       task_bpt);
 209
 210 db_breakpoint_t db_find_breakpoint(
 211         task_t          task,
 212         db_addr_t       addr);
 213
 214 boolean_t db_find_breakpoint_here(
 215         task_t          task,
 216         db_addr_t       addr);
 217
 218 db_thread_breakpoint_t db_find_breakpoint_number(
 219         int             num,
 220         db_breakpoint_t *bkptp);
 221
 222 void db_set_breakpoints(void);
 223
 224 void db_clear_breakpoints(void);
 225
 226 db_breakpoint_t db_set_temp_breakpoint(
 227         task_t          task,
 228         db_addr_t       addr);
 229
 230 void db_delete_temp_breakpoint(
 231         task_t          task,
 232         db_breakpoint_t bkpt);
 233
 234 void db_delete_cmd(void);
 235
 236 void db_breakpoint_cmd(
 237         db_expr_t       addr,
 238         int             have_addr,
 239         db_expr_t       count,
 240         char *          modif);
 241
 242 void db_listbreak_cmd(void);
 243
 244 #endif  /* !_DDB_DB_BREAK_H_ */