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//===-- RuntimeDyld.h - Run-time dynamic linker for MC-JIT ------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Interface for the runtime dynamic linker facilities of the MC-JIT.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_RUNTIME_DYLD_H
#define LLVM_RUNTIME_DYLD_H
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/Memory.h"
namespace llvm {
class RuntimeDyldImpl;
class MemoryBuffer;
// RuntimeDyld clients often want to handle the memory management of
// what gets placed where. For JIT clients, this is an abstraction layer
// over the JITMemoryManager, which references objects by their source
// representations in LLVM IR.
// FIXME: As the RuntimeDyld fills out, additional routines will be needed
// for the varying types of objects to be allocated.
class RTDyldMemoryManager {
RTDyldMemoryManager(const RTDyldMemoryManager&); // DO NOT IMPLEMENT
void operator=(const RTDyldMemoryManager&); // DO NOT IMPLEMENT
public:
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;
};
class RuntimeDyld {
RuntimeDyld(const RuntimeDyld &); // DO NOT IMPLEMENT
void operator=(const RuntimeDyld &); // DO NOT IMPLEMENT
// RuntimeDyldImpl is the actual class. RuntimeDyld is just the public
// interface.
RuntimeDyldImpl *Dyld;
public:
RuntimeDyld(RTDyldMemoryManager*);
~RuntimeDyld();
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();
StringRef getErrorString();
};
} // end namespace llvm
#endif
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