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//===-- VM.h - Definitions for Virtual Machine ------------------*- C++ -*-===//
//
// This file defines the top level Virtual Machine data structure.
//
//===----------------------------------------------------------------------===//
#ifndef VM_H
#define VM_H
#include "llvm/PassManager.h"
#include <string>
#include <map>
class TargetMachine;
class Function;
class GlobalValue;
class MachineCodeEmitter;
class VM {
std::string ExeName;
Module &M; // The LLVM program we are running
TargetMachine &TM; // The current target we are compiling to
PassManager PM; // Passes to compile a function
MachineCodeEmitter *MCE; // MCE object
std::map<const GlobalValue*, void *> GlobalAddress;
public:
VM(const std::string &name, Module &m, TargetMachine &tm)
: ExeName(name), M(m), TM(tm) {
MCE = createEmitter(*this); // Initialize MCE
setupPassManager();
}
~VM();
int run(Function *F);
void addGlobalMapping(const Function *F, void *Addr) {
void *&CurVal = GlobalAddress[(const GlobalValue*)F];
assert(CurVal == 0 && "GlobalMapping already established!");
CurVal = Addr;
}
private:
static MachineCodeEmitter *createEmitter(VM &V);
void setupPassManager();
void *getPointerToFunction(Function *F);
};
#endif
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