ImageLoaderMachOClassic.h [plain text]
#ifndef __IMAGELOADER_MACHO_CLASSIC__
#define __IMAGELOADER_MACHO_CLASSIC__
#include <stdint.h>
#include "ImageLoaderMachO.h"
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, size_t lenFileData,
uint64_t offsetInFat, uint64_t lenInFat, const struct stat& info,
unsigned int segCount, unsigned int libCount,
const struct linkedit_data_command* codeSigCmd, const LinkContext& context);
static ImageLoaderMachOClassic* instantiateFromCache(const macho_header* mh, const char* path, long slide, 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 bool libIsUpward(unsigned int) const;
virtual void setLibImage(unsigned int, ImageLoader*, bool, 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, void (*lock)(), void (*unlock)());
virtual const char* findClosestSymbol(const void* addr, const void** closestAddr) const;
virtual void initializeCoalIterator(CoalIterator&, unsigned int loadOrder, unsigned);
virtual bool incrementCoalIterator(CoalIterator&);
virtual uintptr_t getAddressCoalIterator(CoalIterator&, const LinkContext& contex);
virtual void updateUsesCoalIterator(CoalIterator&, uintptr_t newAddr, ImageLoader* target, unsigned targetIndex, const LinkContext& context);
protected:
virtual void doInterpose(const LinkContext& context);
virtual void dynamicInterpose(const LinkContext& context);
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, uintptr_t slide);
virtual const ImageLoader::Symbol* findShallowExportedSymbol(const char* name, const ImageLoader** foundIn) const;
virtual bool containsSymbol(const void* addr) const;
virtual uintptr_t exportedSymbolAddress(const LinkContext& context, const Symbol* symbol, const ImageLoader* requestor, bool runResolver) 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, bool runResolver, const ImageLoader **foundIn);
uintptr_t getSymbolAddress(const macho_nlist*, const LinkContext& context, bool runResolver) 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__