/* -*- 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 i386" 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 uint64_t localSymbolsOffset; // file offset of where local symbols are stored uint64_t localSymbolsSize; // size of local symbols information uint8_t uuid[16]; // unique value for each shared cache file }; 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]; }; struct dyld_cache_local_symbols_info { uint32_t nlistOffset; // offset into this chunk of nlist entries uint32_t nlistCount; // count of nlist entries uint32_t stringsOffset; // offset into this chunk of string pool uint32_t stringsSize; // byte count of string pool uint32_t entriesOffset; // offset into this chunk of array of dyld_cache_local_symbols_entry uint32_t entriesCount; // number of elements in dyld_cache_local_symbols_entry array }; struct dyld_cache_local_symbols_entry { uint32_t dylibOffset; // offset in cache file of start of dylib uint32_t nlistStartIndex; // start index of locals for this dylib uint32_t nlistCount; // number of local symbols for this dylib }; #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__