osfmk/ddb/db_access.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_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
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /*
  31  * @OSF_COPYRIGHT@
  32  */
  33 /*
  34  * Mach Operating System
  35  * Copyright (c) 1991,1990 Carnegie Mellon University
  36  * All Rights Reserved.
  37  *
  38  * Permission to use, copy, modify and distribute this software and its
  39  * documentation is hereby granted, provided that both the copyright
  40  * notice and this permission notice appear in all copies of the
  41  * software, derivative works or modified versions, and any portions
  42  * thereof, and that both notices appear in supporting documentation.
  43  *
  44  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  45  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  46  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  47  *
  48  * Carnegie Mellon requests users of this software to return to
  49  *
  50  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  51  *  School of Computer Science
  52  *  Carnegie Mellon University
  53  *  Pittsburgh PA 15213-3890
  54  *
  55  * any improvements or extensions that they make and grant Carnegie Mellon
  56  * the rights to redistribute these changes.
  57  */
  58 /*
  59  */
  60 /*
  61  *      Author: David B. Golub, Carnegie Mellon University
  62  *      Date:   7/90
  63  */
  64 /*
  65  * Data access functions for debugger.
  66  */
  67
  68 #ifndef _DDB_DB_ACCESS_H_
  69 #define _DDB_DB_ACCESS_H_
  70
  71 #include <mach/boolean.h>
  72 #include <machine/db_machdep.h>
  73 #include <ddb/db_task_thread.h>
  74
  75 /* implementation dependent access capability */
  76 #define DB_ACCESS_KERNEL        0       /* only kernel space */
  77 #define DB_ACCESS_CURRENT       1       /* kernel or current task space */
  78 #define DB_ACCESS_ANY           2       /* any space */
  79
  80 #ifndef DB_ACCESS_LEVEL
  81 #define DB_ACCESS_LEVEL         DB_ACCESS_KERNEL
  82 #endif  /* DB_ACCESS_LEVEL */
  83
  84 #ifndef DB_VALID_KERN_ADDR
  85 #define DB_VALID_KERN_ADDR(addr)        ((addr) >= VM_MIN_KERNEL_ADDRESS \
  86                                           && (addr) < VM_MAX_KERNEL_ADDRESS)
  87 #define DB_VALID_ADDRESS(addr,user)     ((user != 0) ^ DB_VALID_KERN_ADDR(addr))
  88 #define DB_PHYS_EQ(task1,addr1,task2,addr2)     0
  89 #define DB_CHECK_ACCESS(addr,size,task) db_is_current_space(task)
  90 #endif  /* DB_VALID_KERN_ADDR */
  91
  92 extern int db_access_level;
  93
  94
  95
  96 /* Prototypes for functions exported by ddb/db_access.c.
  97  */
  98 db_expr_t db_get_task_value(
  99         db_addr_t       addr,
 100         register int    size,
 101         boolean_t       is_signed,
 102         task_t          task);
 103
 104 void db_put_task_value(
 105         db_addr_t       addr,
 106         register int    size,
 107         register db_expr_t value,
 108         task_t          task);
 109
 110 db_expr_t db_get_value(
 111         db_addr_t       addr,
 112         int             size,
 113         boolean_t       is_signed);
 114
 115 void db_put_value(
 116         db_addr_t       addr,
 117         int             size,
 118         db_expr_t       value);
 119
 120 #endif  /* !_DDB_DB_ACCESS_H_ */