osfmk/ddb/db_access.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  * Mach Operating System
  33  * Copyright (c) 1991,1990 Carnegie Mellon University
  34  * All Rights Reserved.
  35  *
  36  * Permission to use, copy, modify and distribute this software and its
  37  * documentation is hereby granted, provided that both the copyright
  38  * notice and this permission notice appear in all copies of the
  39  * software, derivative works or modified versions, and any portions
  40  * thereof, and that both notices appear in supporting documentation.
  41  *
  42  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  43  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  44  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  45  *
  46  * Carnegie Mellon requests users of this software to return to
  47  *
  48  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  49  *  School of Computer Science
  50  *  Carnegie Mellon University
  51  *  Pittsburgh PA 15213-3890
  52  *
  53  * any improvements or extensions that they make and grant Carnegie Mellon
  54  * the rights to redistribute these changes.
  55  */
  56 /*
  57  */
  58 /*
  59  *      Author: David B. Golub, Carnegie Mellon University
  60  *      Date:   7/90
  61  */
  62 /*
  63  * Data access functions for debugger.
  64  */
  65
  66 #ifndef _DDB_DB_ACCESS_H_
  67 #define _DDB_DB_ACCESS_H_
  68
  69 #include <mach/boolean.h>
  70 #include <machine/db_machdep.h>
  71 #include <ddb/db_task_thread.h>
  72
  73 /* implementation dependent access capability */
  74 #define DB_ACCESS_KERNEL        0       /* only kernel space */
  75 #define DB_ACCESS_CURRENT       1       /* kernel or current task space */
  76 #define DB_ACCESS_ANY           2       /* any space */
  77
  78 #ifndef DB_ACCESS_LEVEL
  79 #define DB_ACCESS_LEVEL         DB_ACCESS_KERNEL
  80 #endif  /* DB_ACCESS_LEVEL */
  81
  82 #ifndef DB_VALID_KERN_ADDR
  83 #define DB_VALID_KERN_ADDR(addr)        ((addr) >= VM_MIN_KERNEL_ADDRESS \
  84                                           && (addr) < VM_MAX_KERNEL_ADDRESS)
  85 #define DB_VALID_ADDRESS(addr,user)     ((user != 0) ^ DB_VALID_KERN_ADDR(addr))
  86 #define DB_PHYS_EQ(task1,addr1,task2,addr2)     0
  87 #define DB_CHECK_ACCESS(addr,size,task) db_is_current_space(task)
  88 #endif  /* DB_VALID_KERN_ADDR */
  89
  90 extern int db_access_level;
  91
  92
  93
  94 /* Prototypes for functions exported by ddb/db_access.c.
  95  */
  96 db_expr_t db_get_task_value(
  97         db_addr_t       addr,
  98         register int    size,
  99         boolean_t       is_signed,
 100         task_t          task);
 101
 102 void db_put_task_value(
 103         db_addr_t       addr,
 104         register int    size,
 105         register db_expr_t value,
 106         task_t          task);
 107
 108 db_expr_t db_get_value(
 109         db_addr_t       addr,
 110         int             size,
 111         boolean_t       is_signed);
 112
 113 void db_put_value(
 114         db_addr_t       addr,
 115         int             size,
 116         db_expr_t       value);
 117
 118 #endif  /* !_DDB_DB_ACCESS_H_ */