ImageLoaderMachOCompressed.h [plain text]
#ifndef __IMAGELOADER_MACHO_COMPRESSED__
#define __IMAGELOADER_MACHO_COMPRESSED__
#include <stdint.h>
#include "ImageLoaderMachO.h"
class ImageLoaderMachOCompressed : public ImageLoaderMachO {
public:
static ImageLoaderMachOCompressed* instantiateMainExecutable(const macho_header* mh, uintptr_t slide, const char* path,
unsigned int segCount, unsigned int libCount, const LinkContext& context);
static ImageLoaderMachOCompressed* 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 struct linkedit_data_command* codeSigCmd, const LinkContext& context);
static ImageLoaderMachOCompressed* instantiateFromCache(const macho_header* mh, const char* path, long slide, const struct stat& info,
unsigned int segCount, unsigned int libCount, const LinkContext& context);
static ImageLoaderMachOCompressed* instantiateFromMemory(const char* moduleName, const macho_header* mh, uint64_t len,
unsigned int segCount, unsigned int libCount, const LinkContext& context);
virtual ~ImageLoaderMachOCompressed();
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);
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 doInterpose(const LinkContext& context);
virtual void setDyldInfo(const dyld_info_command* dyldInfo) { fDyldInfo = dyldInfo; }
virtual void setSymbolTableInfo(const macho_nlist*, const char*, const dysymtab_command*) {}
virtual bool isSubframeworkOf(const LinkContext& context, const ImageLoader* image) const { return false; }
virtual bool hasSubLibrary(const LinkContext& context, const ImageLoader* child) const { return false; }
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 LinkContext& context, const Symbol* symbol, 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:
struct LastLookup { int ordinal; uint8_t flags; const char* name; uintptr_t result; const ImageLoader* foundIn; };
typedef uintptr_t (ImageLoaderMachOCompressed::*bind_handler)(const LinkContext& context, uintptr_t addr, uint8_t type,
const char* symbolName, uint8_t symboFlags, intptr_t addend, int libraryOrdinal,
const char* msg, LastLookup* last, bool runResolver);
void eachLazyBind(const LinkContext& context, bind_handler);
void eachBind(const LinkContext& context, bind_handler);
ImageLoaderMachOCompressed(const macho_header* mh, const char* path, unsigned int segCount,
uint32_t segOffsets[], unsigned int libCount);
static ImageLoaderMachOCompressed* instantiateStart(const macho_header* mh, const char* path, unsigned int segCount, unsigned int libCount);
void instantiateFinish(const LinkContext& context);
void markSequentialLINKEDIT(const LinkContext& context);
void markFreeLINKEDIT(const LinkContext& context);
void markLINKEDIT(const LinkContext& context, int advise);
void rebaseAt(const LinkContext& context, uintptr_t addr, uintptr_t slide, uint8_t type);
void throwBadRebaseAddress(uintptr_t address, uintptr_t segmentEndAddress, int segmentIndex,
const uint8_t* startOpcodes, const uint8_t* endOpcodes, const uint8_t* pos);
uintptr_t bindAt(const LinkContext& context, uintptr_t addr, uint8_t type, const char* symbolName,
uint8_t symboFlags, intptr_t addend, int libraryOrdinal, const char* msg,
LastLookup* last, bool runResolver=false);
void bindCompressed(const LinkContext& context);
void throwBadBindingAddress(uintptr_t address, uintptr_t segmentEndAddress, int segmentIndex,
const uint8_t* startOpcodes, const uint8_t* endOpcodes, const uint8_t* pos);
uintptr_t resolve(const LinkContext& context, const char* symbolName,
uint8_t symboFlags, int libraryOrdinal, const ImageLoader** targetImage,
LastLookup* last = NULL, bool runResolver=false);
uintptr_t resolveFlat(const LinkContext& context, const char* symbolName, bool weak_import, bool runResolver,
const ImageLoader** foundIn);
uintptr_t resolveCoalesced(const LinkContext& context, const char* symbolName, const ImageLoader** foundIn);
uintptr_t resolveTwolevel(const LinkContext& context, const ImageLoader* targetImage, bool weak_import,
const char* symbolName, bool runResolver, const ImageLoader** foundIn);
uintptr_t interposeAt(const LinkContext& context, uintptr_t addr, uint8_t type, const char*,
uint8_t, intptr_t, int, const char*, LastLookup*, bool runResolver);
static const uint8_t* trieWalk(const uint8_t* start, const uint8_t* end, const char* s);
void updateOptimizedLazyPointers(const LinkContext& context);
void updateAlternateLazyPointer(uint8_t* stub, void** originalLazyPointerAddr);
const struct dyld_info_command* fDyldInfo;
};
#endif // __IMAGELOADER_MACHO_COMPRESSED__