osfmk/ddb/db_access.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * @OSF_COPYRIGHT@
  24  */
  25 /*
  26  * Mach Operating System
  27  * Copyright (c) 1991,1990 Carnegie Mellon University
  28  * All Rights Reserved.
  29  *
  30  * Permission to use, copy, modify and distribute this software and its
  31  * documentation is hereby granted, provided that both the copyright
  32  * notice and this permission notice appear in all copies of the
  33  * software, derivative works or modified versions, and any portions
  34  * thereof, and that both notices appear in supporting documentation.
  35  *
  36  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  37  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  38  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  39  *
  40  * Carnegie Mellon requests users of this software to return to
  41  *
  42  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  43  *  School of Computer Science
  44  *  Carnegie Mellon University
  45  *  Pittsburgh PA 15213-3890
  46  *
  47  * any improvements or extensions that they make and grant Carnegie Mellon
  48  * the rights to redistribute these changes.
  49  */
  50 /*
  51  */
  52 /*
  53  *      Author: David B. Golub, Carnegie Mellon University
  54  *      Date:   7/90
  55  */
  56 /*
  57  * Data access functions for debugger.
  58  */
  59
  60 #ifndef _DDB_DB_ACCESS_H_
  61 #define _DDB_DB_ACCESS_H_
  62
  63 #include <mach/boolean.h>
  64 #include <machine/db_machdep.h>
  65 #include <ddb/db_task_thread.h>
  66
  67 /* implementation dependent access capability */
  68 #define DB_ACCESS_KERNEL        0       /* only kernel space */
  69 #define DB_ACCESS_CURRENT       1       /* kernel or current task space */
  70 #define DB_ACCESS_ANY           2       /* any space */
  71
  72 #ifndef DB_ACCESS_LEVEL
  73 #define DB_ACCESS_LEVEL         DB_ACCESS_KERNEL
  74 #endif  /* DB_ACCESS_LEVEL */
  75
  76 #ifndef DB_VALID_KERN_ADDR
  77 #define DB_VALID_KERN_ADDR(addr)        ((addr) >= VM_MIN_KERNEL_ADDRESS \
  78                                           && (addr) < VM_MAX_KERNEL_ADDRESS)
  79 #define DB_VALID_ADDRESS(addr,user)     ((user != 0) ^ DB_VALID_KERN_ADDR(addr))
  80 #define DB_PHYS_EQ(task1,addr1,task2,addr2)     0
  81 #define DB_CHECK_ACCESS(addr,size,task) db_is_current_space(task)
  82 #endif  /* DB_VALID_KERN_ADDR */
  83
  84 extern int db_access_level;
  85
  86
  87
  88 /* Prototypes for functions exported by ddb/db_access.c.
  89  */
  90 db_expr_t db_get_task_value(
  91         db_addr_t       addr,
  92         register int    size,
  93         boolean_t       is_signed,
  94         task_t          task);
  95
  96 void db_put_task_value(
  97         db_addr_t       addr,
  98         register int    size,
  99         register db_expr_t value,
 100         task_t          task);
 101
 102 db_expr_t db_get_value(
 103         db_addr_t       addr,
 104         int             size,
 105         boolean_t       is_signed);
 106
 107 void db_put_value(
 108         db_addr_t       addr,
 109         int             size,
 110         db_expr_t       value);
 111
 112 #endif  /* !_DDB_DB_ACCESS_H_ */