RTDyldMemoryManager() {}
virtual ~RTDyldMemoryManager();
- // Allocate ActualSize bytes, or more, for the named function. Return
- // a pointer to the allocated memory and update Size to reflect how much
- // memory was acutally allocated.
- virtual uint64_t startFunctionBody(const char *Name, uintptr_t &Size) = 0;
-
- // Mark the end of the function, including how much of the allocated
- // memory was actually used.
- virtual void endFunctionBody(const char *Name, uint64_t FunctionStart,
- uint64_t FunctionEnd) = 0;
+ /// allocateCodeSection - Allocate a memory block of (at least) the given
+ /// size suitable for executable code.
+ virtual uint8_t *allocateCodeSection(uintptr_t Size, unsigned Alignment,
+ unsigned SectionID) = 0;
+
+ /// allocateDataSection - Allocate a memory block of (at least) the given
+ /// size suitable for data.
+ virtual uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment,
+ unsigned SectionID) = 0;
+
+ virtual void *getPointerToNamedFunction(const std::string &Name,
+ bool AbortOnFailure = true) = 0;
};
class RuntimeDyld {
// RuntimeDyldImpl is the actual class. RuntimeDyld is just the public
// interface.
RuntimeDyldImpl *Dyld;
+ RTDyldMemoryManager *MM;
+protected:
+ // Change the address associated with a section when resolving relocations.
+ // Any relocations already associated with the symbol will be re-resolved.
+ void reassignSectionAddress(unsigned SectionID, uint64_t Addr);
public:
RuntimeDyld(RTDyldMemoryManager*);
~RuntimeDyld();
+ /// Load an in-memory object file into the dynamic linker.
bool loadObject(MemoryBuffer *InputBuffer);
- uint64_t getSymbolAddress(StringRef Name);
- void reassignSymbolAddress(StringRef Name, uint64_t Addr);
- // FIXME: Should be parameterized to get the memory block associated with
- // a particular loaded object.
- sys::MemoryBlock getMemoryBlock();
+
+ /// Get the address of our local copy of the symbol. This may or may not
+ /// be the address used for relocation (clients can copy the data around
+ /// and resolve relocatons based on where they put it).
+ void *getSymbolAddress(StringRef Name);
+
+ /// Resolve the relocations for all symbols we currently know about.
+ void resolveRelocations();
+
+ /// mapSectionAddress - map a section to its target address space value.
+ /// Map the address of a JIT section as returned from the memory manager
+ /// to the address in the target process as the running code will see it.
+ /// This is the address which will be used for relocation resolution.
+ void mapSectionAddress(void *LocalAddress, uint64_t TargetAddress);
+
StringRef getErrorString();
};