db_access.h

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    1 /* 
    2  * Mach Operating System
    3  * Copyright (c) 1993,1992,1991,1990 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 "AS IS"
   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 Mellon
   24  * the rights to redistribute these changes.
   25  */
   26 /*
   27  * HISTORY
   28  * $Log:        db_access.h,v $
   29  * Revision 2.7  93/11/17  16:19:15  dbg
   30  *      Added low-level access routines: db_read_bytes, db_write_bytes.
   31  *      [93/10/13            dbg]
   32  * 
   33  * Revision 2.6  93/01/14  17:24:19  danner
   34  *      Enabled prototypes.
   35  *      [92/11/30            af]
   36  * 
   37  * Revision 2.5  91/10/09  15:57:01  af
   38  *      Added declarations of db_{get,put}_task_value.
   39  *      Added definitions of implementation dependent access capability.
   40  *      Added default defines of space access check functions.
   41  *      [91/08/29            tak]
   42  * 
   43  * Revision 2.4  91/05/14  15:31:48  mrt
   44  *      Correcting copyright
   45  * 
   46  * Revision 2.3  91/02/05  17:05:49  mrt
   47  *      Changed to new Mach copyright
   48  *      [91/01/31  16:16:37  mrt]
   49  * 
   50  * Revision 2.2  90/08/27  21:48:27  dbg
   51  *      Created.
   52  *      [90/08/07            dbg]
   53  * 
   54  */
   55 /*
   56  *      Author: David B. Golub, Carnegie Mellon University
   57  *      Date:   7/90
   58  */
   59 /*
   60  * Data access functions for debugger.
   61  */
   62 #ifndef _DDB_DB_ACCESS_H_
   63 #define _DDB_DB_ACCESS_H_
   64 
   65 #include <mach/boolean.h>
   66 #include <machine/db_machdep.h>
   67 #include <ddb/db_task_thread.h>
   68 
   69 /* implementation dependent access capability */
   70 #define DB_ACCESS_KERNEL        0       /* only kernel space */
   71 #define DB_ACCESS_CURRENT       1       /* kernel or current task space */
   72 #define DB_ACCESS_ANY           2       /* any space */
   73 
   74 #ifndef DB_ACCESS_LEVEL
   75 #define DB_ACCESS_LEVEL         DB_ACCESS_KERNEL
   76 #endif  /* DB_ACCESS_LEVEL */
   77 
   78 #ifndef DB_VALID_KERN_ADDR
   79 #define DB_VALID_KERN_ADDR(addr)        ((addr) >= VM_MIN_KERNEL_ADDRESS \
   80                                           && (addr) < VM_MAX_KERNEL_ADDRESS)
   81 #define DB_VALID_ADDRESS(addr,user)     ((user != 0) ^ DB_VALID_KERN_ADDR(addr))
   82 #define DB_PHYS_EQ(task1,addr1,task2,addr2)     0
   83 #define DB_CHECK_ACCESS(addr,size,task) db_is_current_task(task)
   84 #endif  /* DB_VALID_KERN_ADDR */
   85 
   86 extern int db_access_level;
   87 
   88 /*
   89  *      Read/write a word (or less) in the current task.
   90  */
   91 extern db_expr_t db_get_value(  db_addr_t addr,
   92                                 int size,
   93                                 boolean_t is_signed );
   94 
   95 extern void      db_put_value(  db_addr_t addr,
   96                                 int size,
   97                                 db_expr_t value );
   98 
   99 /*
  100  *      Read/write a word (or less) in the specified task.
  101  */
  102 extern db_expr_t db_get_task_value(     db_addr_t addr,
  103                                         int size,
  104                                         boolean_t is_signed,
  105                                         task_t task );
  106 
  107 extern void      db_put_task_value(     db_addr_t addr,
  108                                         int size,
  109                                         db_expr_t value,
  110                                         task_t task );
  111 
  112 /*
  113  *      Read/write arbitrary arrays of bytes.
  114  */
  115 extern void      db_read_bytes( db_addr_t addr,
  116                                 int     size,
  117                                 char *  data,
  118                                 task_t  task);
  119 
  120 extern void      db_write_bytes(db_addr_t addr,
  121                                 int     size,
  122                                 char *  data,
  123                                 task_t  task);
  124 
  125 #endif  /* _DDB_DB_ACCESS_H_ */

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

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