[apple/dyld.git] / launch-cache / dyld_cache_format.h

/* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*- 
 *
 * Copyright (c) 2006-2009 Apple Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
#ifndef __DYLD_CACHE_FORMAT__
#define __DYLD_CACHE_FORMAT__

#include <sys/types.h>
#include <stdint.h>
#include <mach/shared_region.h>


struct dyld_cache_header
{
	char		magic[16];				// e.g. "dyld_v0     ppc"
	uint32_t	mappingOffset;			// file offset to first dyld_cache_mapping_info
	uint32_t	mappingCount;			// number of dyld_cache_mapping_info entries
	uint32_t	imagesOffset;			// file offset to first dyld_cache_image_info
	uint32_t	imagesCount;			// number of dyld_cache_image_info entries
	uint64_t	dyldBaseAddress;		// base address of dyld when cache was built
	uint64_t	codeSignatureOffset;	// file offset of code signature blob
	uint64_t	codeSignatureSize;		// size of code signature blob (zero means to end of file)
	uint64_t	slideInfoOffset;		// file offset of kernel slid info
	uint64_t	slideInfoSize;			// size of kernel slid info
};

struct dyld_cache_mapping_info {
	uint64_t	address;
	uint64_t	size;
	uint64_t	fileOffset;
	uint32_t	maxProt;
	uint32_t	initProt;
};

struct dyld_cache_image_info
{
	uint64_t	address;
	uint64_t	modTime;
	uint64_t	inode;
	uint32_t	pathFileOffset;
	uint32_t	pad;
};

struct dyld_cache_slide_info
{
	uint32_t	version;		// currently 1
	uint32_t	toc_offset;
	uint32_t	toc_count;
	uint32_t	entries_offset;
	uint32_t	entries_count;
	uint32_t	entries_size;  // currently 128 
	// uint16_t toc[toc_count];
	// entrybitmap entries[entries_count];
};


#define MACOSX_DYLD_SHARED_CACHE_DIR	"/var/db/dyld/"
#define IPHONE_DYLD_SHARED_CACHE_DIR	"/System/Library/Caches/com.apple.dyld/"
#define DYLD_SHARED_CACHE_BASE_NAME		"dyld_shared_cache_"


#endif // __DYLD_CACHE_FORMAT__
Commit	Line	Data
bac542e6	1	/* -- mode: C++; c-basic-offset: 4; tab-width: 4 --
0959b6d4	2	*
412ebb8e	3	* Copyright (c) 2006-2009 Apple Inc. All rights reserved.
0959b6d4 A	4	*
	5	* @APPLE_LICENSE_HEADER_START@
	6	*
	7	* This file contains Original Code and/or Modifications of Original Code
	8	* as defined in and that are subject to the Apple Public Source License
	9	* Version 2.0 (the 'License'). You may not use this file except in
	10	* compliance with the License. Please obtain a copy of the License at
	11	* http://www.opensource.apple.com/apsl/ and read it before using this
	12	* file.
	13	*
	14	* The Original Code and all software distributed under the License are
	15	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	16	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	17	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	19	* Please see the License for the specific language governing rights and
	20	* limitations under the License.
	21	*
	22	* @APPLE_LICENSE_HEADER_END@
	23	*/
bac542e6 A	24	#ifndef __DYLD_CACHE_FORMAT__
bac542e6 A	25	#define __DYLD_CACHE_FORMAT__
0959b6d4	26
bac542e6	27	#include <sys/types.h>
0959b6d4	28	#include <stdint.h>
39a8cd10	29	#include <mach/shared_region.h>
0959b6d4 A	30
0959b6d4 A	31
412ebb8e	32	struct dyld_cache_header
bac542e6 A	33	{
bac542e6 A	34	char magic[16]; // e.g. "dyld_v0 ppc"
412ebb8e A	35	uint32_t mappingOffset; // file offset to first dyld_cache_mapping_info
412ebb8e A	36	uint32_t mappingCount; // number of dyld_cache_mapping_info entries
bac542e6 A	37	uint32_t imagesOffset; // file offset to first dyld_cache_image_info
	38	uint32_t imagesCount; // number of dyld_cache_image_info entries
	39	uint64_t dyldBaseAddress; // base address of dyld when cache was built
412ebb8e A	40	uint64_t codeSignatureOffset; // file offset of code signature blob
	41	uint64_t codeSignatureSize; // size of code signature blob (zero means to end of file)
	42	uint64_t slideInfoOffset; // file offset of kernel slid info
	43	uint64_t slideInfoSize; // size of kernel slid info
	44	};
	45
	46	struct dyld_cache_mapping_info {
	47	uint64_t address;
	48	uint64_t size;
	49	uint64_t fileOffset;
	50	uint32_t maxProt;
	51	uint32_t initProt;
bac542e6 A	52	};
	53
	54	struct dyld_cache_image_info
	55	{
	56	uint64_t address;
	57	uint64_t modTime;
	58	uint64_t inode;
	59	uint32_t pathFileOffset;
	60	uint32_t pad;
0959b6d4 A	61	};
0959b6d4 A	62
412ebb8e A	63	struct dyld_cache_slide_info
	64	{
	65	uint32_t version; // currently 1
	66	uint32_t toc_offset;
	67	uint32_t toc_count;
	68	uint32_t entries_offset;
	69	uint32_t entries_count;
	70	uint32_t entries_size; // currently 128
	71	// uint16_t toc[toc_count];
	72	// entrybitmap entries[entries_count];
	73	};
	74
	75
	76
	77	#define MACOSX_DYLD_SHARED_CACHE_DIR "/var/db/dyld/"
	78	#define IPHONE_DYLD_SHARED_CACHE_DIR "/System/Library/Caches/com.apple.dyld/"
bac542e6	79	#define DYLD_SHARED_CACHE_BASE_NAME "dyld_shared_cache_"
0959b6d4 A	80
	81
	82
bac542e6	83	#endif // __DYLD_CACHE_FORMAT__
0959b6d4	84
0959b6d4	85