--- /dev/null
+/* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*-
+ *
+ * Copyright (c) 2008 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 __IMAGELOADER_MACHO_CLASSIC__
+#define __IMAGELOADER_MACHO_CLASSIC__
+
+#include <stdint.h>
+
+#include "ImageLoaderMachO.h"
+
+
+//
+// ImageLoaderMachOClassic is the concrete subclass of ImageLoader which loads mach-o files
+// that use the traditional LINKEDIT format.
+//
+class ImageLoaderMachOClassic : public ImageLoaderMachO {
+public:
+ static ImageLoaderMachOClassic* instantiateMainExecutable(const macho_header* mh, uintptr_t slide, const char* path,
+ unsigned int segCount, unsigned int libCount, const LinkContext& context);
+ static ImageLoaderMachOClassic* instantiateFromFile(const char* path, int fd, const uint8_t* fileData,
+ uint64_t offsetInFat, uint64_t lenInFat, const struct stat& info,
+ unsigned int segCount, unsigned int libCount, const LinkContext& context);
+ static ImageLoaderMachOClassic* instantiateFromCache(const macho_header* mh, const char* path, const struct stat& info,
+ unsigned int segCount, unsigned int libCount, const LinkContext& context);
+ static ImageLoaderMachOClassic* instantiateFromMemory(const char* moduleName, const macho_header* mh, uint64_t len,
+ unsigned int segCount, unsigned int libCount, const LinkContext& context);
+
+ virtual ~ImageLoaderMachOClassic();
+
+ virtual ImageLoader* libImage(unsigned int) const;
+ virtual bool libReExported(unsigned int) const;
+ virtual void setLibImage(unsigned int, ImageLoader*, bool);
+ virtual void doBind(const LinkContext& context, bool forceLazysBound);
+ virtual void doBindJustLazies(const LinkContext& context);
+ virtual uintptr_t doBindLazySymbol(uintptr_t* lazyPointer, const LinkContext& context);
+ virtual uintptr_t doBindFastLazySymbol(uint32_t lazyBindingInfoOffset, const LinkContext& context);
+ virtual const char* findClosestSymbol(const void* addr, const void** closestAddr) const;
+ virtual void initializeCoalIterator(CoalIterator&, unsigned int loadOrder);
+ virtual bool incrementCoalIterator(CoalIterator&);
+ virtual uintptr_t getAddressCoalIterator(CoalIterator&, const LinkContext& contex);
+ virtual void updateUsesCoalIterator(CoalIterator&, uintptr_t newAddr, ImageLoader* target, const LinkContext& context);
+
+protected:
+ virtual void setDyldInfo(const dyld_info_command*) {}
+ virtual void setSymbolTableInfo(const macho_nlist*, const char*, const dysymtab_command*);
+ virtual bool isSubframeworkOf(const LinkContext& context, const ImageLoader* image) const;
+ virtual bool hasSubLibrary(const LinkContext& context, const ImageLoader* child) const;
+ virtual uint32_t* segmentCommandOffsets() const;
+ virtual void rebase(const LinkContext& context);
+ virtual const ImageLoader::Symbol* findExportedSymbol(const char* name, const ImageLoader** foundIn) const;
+ virtual bool containsSymbol(const void* addr) const;
+ virtual uintptr_t exportedSymbolAddress(const Symbol* symbol) const;
+ virtual bool exportedSymbolIsWeakDefintion(const Symbol* symbol) const;
+ virtual const char* exportedSymbolName(const Symbol* symbol) const;
+ virtual unsigned int exportedSymbolCount() const;
+ virtual const ImageLoader::Symbol* exportedSymbolIndexed(unsigned int) const;
+ virtual unsigned int importedSymbolCount() const;
+ virtual const ImageLoader::Symbol* importedSymbolIndexed(unsigned int) const;
+ virtual const char* importedSymbolName(const Symbol* symbol) const;
+#if PREBOUND_IMAGE_SUPPORT
+ virtual void resetPreboundLazyPointers(const LinkContext& context);
+#endif
+
+
+private:
+ ImageLoaderMachOClassic(const macho_header* mh, const char* path, unsigned int segCount,
+ uint32_t segOffsets[], unsigned int libCount);
+ static ImageLoaderMachOClassic* instantiateStart(const macho_header* mh, const char* path, unsigned int segCount, unsigned int libCount);
+ void instantiateFinish(const LinkContext& context);
+ uintptr_t getRelocBase();
+ void mapSegmentsClassic(int fd, uint64_t offsetInFat, uint64_t lenInFat, uint64_t fileLen, const LinkContext& context);
+ uintptr_t getFirstWritableSegmentAddress();
+ const struct macho_nlist* binarySearch(const char* key, const char stringPool[], const struct macho_nlist symbols[], uint32_t symbolCount) const;
+ const struct macho_nlist* binarySearchWithToc(const char* key, const char stringPool[], const struct macho_nlist symbols[],
+ const struct dylib_table_of_contents toc[], uint32_t symbolCount, uint32_t hintIndex) const;
+ static bool symbolIsWeakReference(const struct macho_nlist* symbol);
+ static bool symbolIsWeakDefinition(const struct macho_nlist* symbol);
+ uintptr_t resolveUndefined(const LinkContext& context, const struct macho_nlist* symbol, bool twoLevel,
+ bool dontCoalesce, const ImageLoader **foundIn);
+ uintptr_t getSymbolAddress(const macho_nlist*, const LinkContext& context) const;
+ bool isAddrInSection(uintptr_t addr, uint8_t sectionIndex);
+ void doBindExternalRelocations(const LinkContext& context);
+ uintptr_t bindIndirectSymbol(uintptr_t* ptrToBind, const struct macho_section* sect,
+ const char* symbolName, uintptr_t targetAddr,
+ const ImageLoader* targetImage, const LinkContext& context);
+ void bindIndirectSymbolPointers(const LinkContext& context, bool bindNonLazys, bool bindLazys);
+ void initializeLazyStubs(const LinkContext& context);
+ void prefetchLINKEDIT(const LinkContext& context);
+#if SPLIT_SEG_DYLIB_SUPPORT
+ unsigned int getExtraZeroFillEntriesCount();
+ void initMappingTable(uint64_t offsetInFat, shared_file_mapping_np *mappingTable);
+#endif
+ int mapSplitSegDylibOutsideSharedRegion(int fd, uint64_t offsetInFat, uint64_t lenInFat, uint64_t fileLen, const LinkContext& context);
+#if SPLIT_SEG_SHARED_REGION_SUPPORT
+ int mapSplitSegDylibInfoSharedRegion(int fd, uint64_t offsetInFat, uint64_t lenInFat, uint64_t fileLen, const LinkContext& context);
+#endif
+
+
+ const char* fStrings;
+ const struct macho_nlist* fSymbolTable;
+ const struct dysymtab_command* fDynamicInfo;
+
+};
+
+
+
+
+#endif // __IMAGELOADER_MACHO_CLASSIC__
+
+
+
+
projects / apple / dyld.git / blobdiff