[apple/xnu.git] / osfmk / mach / shared_memory_server.h

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 *
 *	File: mach/shared_memory_server.h
 *
 * 	protos and struct definitions for shared library
 *	server and interface
 */
#ifndef _MACH_SHARED_MEMORY_SERVER_H_
#define _MACH_SHARED_MEMORY_SERVER_H_

#define	SHARED_LIBRARY_SERVER_SUPPORTED
#define GLOBAL_SHARED_TEXT_SEGMENT 0x90000000
#define GLOBAL_SHARED_DATA_SEGMENT 0xA0000000
#define GLOBAL_SHARED_SEGMENT_MASK 0xF0000000

#define		SHARED_TEXT_REGION_SIZE 0x10000000
#define		SHARED_DATA_REGION_SIZE 0x10000000
#define		SHARED_ALTERNATE_LOAD_BASE 0x9000000

/* 
 *  Note: the two masks below are useful because the assumption is 
 *  made that these shared regions will always be mapped on natural boundaries 
 *  i.e. if the size is 0x10000000 the object can be mapped at 
 *  0x20000000, or 0x30000000, but not 0x1000000
 */
#define		SHARED_TEXT_REGION_MASK 0xFFFFFFF
#define		SHARED_DATA_REGION_MASK 0xFFFFFFF


#include <mach/vm_prot.h>
#include <mach/mach_types.h>

#define SHARED_LIB_ALIAS  0x10


/* flags field aliases for copyin_shared_file and load_shared_file */

/* IN */
#define ALTERNATE_LOAD_SITE 0x1
#define NEW_LOCAL_SHARED_REGIONS 0x2
#define	QUERY_IS_SYSTEM_REGION 0x4

/* OUT */
#define SF_PREV_LOADED    0x1
#define SYSTEM_REGION_BACKED 0x2


#define load_file_hash(file_object, size) \
		((((natural_t)file_object) & 0xffffff) % size)

#define VM_PROT_COW  0x8  /* must not interfere with normal prot assignments */
#define VM_PROT_ZF  0x10  /* must not interfere with normal prot assignments */

struct sf_mapping {
	vm_offset_t	mapping_offset;
	vm_size_t	size;
	vm_offset_t	file_offset;
	vm_prot_t	protection;  /* read/write/execute/COW/ZF */
	vm_offset_t	cksum;
};

typedef struct sf_mapping sf_mapping_t;

#endif /* _MACH_SHARED_MEMORY_SERVER_H_ */
Commit	Line	Data
1c79356b A	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	*
9bccf70c	24	* File: mach/shared_memory_server.h
1c79356b A	25	*
	26	* protos and struct definitions for shared library
	27	* server and interface
	28	*/
9bccf70c A	29	#ifndef _MACH_SHARED_MEMORY_SERVER_H_
9bccf70c A	30	#define _MACH_SHARED_MEMORY_SERVER_H_
1c79356b	31
0b4e3aa0	32	#define SHARED_LIBRARY_SERVER_SUPPORTED
9bccf70c A	33	#define GLOBAL_SHARED_TEXT_SEGMENT 0x90000000
9bccf70c A	34	#define GLOBAL_SHARED_DATA_SEGMENT 0xA0000000
0b4e3aa0 A	35	#define GLOBAL_SHARED_SEGMENT_MASK 0xF0000000
0b4e3aa0 A	36
1c79356b A	37	#define SHARED_TEXT_REGION_SIZE 0x10000000
1c79356b A	38	#define SHARED_DATA_REGION_SIZE 0x10000000
0b4e3aa0 A	39	#define SHARED_ALTERNATE_LOAD_BASE 0x9000000
0b4e3aa0 A	40
1c79356b A	41	/*
	42	* Note: the two masks below are useful because the assumption is
	43	* made that these shared regions will always be mapped on natural boundaries
	44	* i.e. if the size is 0x10000000 the object can be mapped at
	45	* 0x20000000, or 0x30000000, but not 0x1000000
	46	*/
	47	#define SHARED_TEXT_REGION_MASK 0xFFFFFFF
	48	#define SHARED_DATA_REGION_MASK 0xFFFFFFF
	49
1c79356b A	50
1c79356b A	51	#include <mach/vm_prot.h>
9bccf70c	52	#include <mach/mach_types.h>
1c79356b A	53
	54	#define SHARED_LIB_ALIAS 0x10
	55
	56
	57	/* flags field aliases for copyin_shared_file and load_shared_file */
	58
	59	/* IN */
	60	#define ALTERNATE_LOAD_SITE 0x1
	61	#define NEW_LOCAL_SHARED_REGIONS 0x2
9bccf70c	62	#define QUERY_IS_SYSTEM_REGION 0x4
1c79356b A	63
	64	/* OUT */
	65	#define SF_PREV_LOADED 0x1
9bccf70c	66	#define SYSTEM_REGION_BACKED 0x2
1c79356b A	67
	68
	69	#define load_file_hash(file_object, size) \
	70	((((natural_t)file_object) & 0xffffff) % size)
	71
	72	#define VM_PROT_COW 0x8 /* must not interfere with normal prot assignments */
	73	#define VM_PROT_ZF 0x10 /* must not interfere with normal prot assignments */
	74
	75	struct sf_mapping {
	76	vm_offset_t mapping_offset;
	77	vm_size_t size;
	78	vm_offset_t file_offset;
	79	vm_prot_t protection; /* read/write/execute/COW/ZF */
	80	vm_offset_t cksum;
	81	};
	82
	83	typedef struct sf_mapping sf_mapping_t;
	84
9bccf70c	85	#endif /* _MACH_SHARED_MEMORY_SERVER_H_ */