mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-03 15:29:28 +00:00
69582b35b6
starts a program. This allows the GNU env program to compile and JIT under LLVM. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8022 91177308-0d34-0410-b5e6-96231b3b80d8
98 lines
3.0 KiB
C++
98 lines
3.0 KiB
C++
//===- ExecutionEngine.h - Abstract Execution Engine Interface --*- C++ -*-===//
|
|
//
|
|
// This file defines the abstract interface that implements execution support
|
|
// for LLVM.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef EXECUTION_ENGINE_H
|
|
#define EXECUTION_ENGINE_H
|
|
|
|
#include <vector>
|
|
#include <string>
|
|
#include <map>
|
|
#include <cassert>
|
|
class Constant;
|
|
class Type;
|
|
class GlobalValue;
|
|
class Function;
|
|
class Module;
|
|
class TargetData;
|
|
union GenericValue;
|
|
|
|
class ExecutionEngine {
|
|
Module &CurMod;
|
|
const TargetData *TD;
|
|
|
|
protected:
|
|
// GlobalAddress - A mapping between LLVM global values and their actualized
|
|
// version...
|
|
std::map<const GlobalValue*, void *> GlobalAddress;
|
|
|
|
void setTargetData(const TargetData &td) {
|
|
TD = &td;
|
|
}
|
|
public:
|
|
ExecutionEngine(Module *M) : CurMod(*M) {
|
|
assert(M && "Module is null?");
|
|
}
|
|
virtual ~ExecutionEngine();
|
|
|
|
Module &getModule() const { return CurMod; }
|
|
const TargetData &getTargetData() const { return *TD; }
|
|
|
|
/// run - Start execution with the specified function, arguments, and
|
|
/// environment.
|
|
///
|
|
virtual int run(const std::string &FnName,
|
|
const std::vector<std::string> &Args,
|
|
const char ** envp) = 0;
|
|
|
|
/// createJIT - Create an return a new JIT compiler if there is one available
|
|
/// for the current target. Otherwise it returns null.
|
|
///
|
|
static ExecutionEngine *createJIT(Module *M, unsigned Config);
|
|
|
|
/// createInterpreter - Create a new interpreter object. This can never fail.
|
|
///
|
|
static ExecutionEngine *createInterpreter(Module *M, unsigned Config,
|
|
bool DebugMode, bool TraceMode);
|
|
|
|
void addGlobalMapping(const Function *F, void *Addr) {
|
|
void *&CurVal = GlobalAddress[(const GlobalValue*)F];
|
|
assert(CurVal == 0 && "GlobalMapping already established!");
|
|
CurVal = Addr;
|
|
}
|
|
|
|
// getPointerToGlobalIfAvailable - This returns the address of the specified
|
|
// global value if it is available, otherwise it returns null.
|
|
//
|
|
void *getPointerToGlobalIfAvailable(const GlobalValue *GV) {
|
|
std::map<const GlobalValue*, void*>::iterator I = GlobalAddress.find(GV);
|
|
return I != GlobalAddress.end() ? I->second : 0;
|
|
}
|
|
|
|
// getPointerToGlobal - This returns the address of the specified global
|
|
// value. This may involve code generation if it's a function.
|
|
//
|
|
void *getPointerToGlobal(const GlobalValue *GV);
|
|
|
|
// getPointerToFunction - The different EE's represent function bodies in
|
|
// different ways. They should each implement this to say what a function
|
|
// pointer should look like.
|
|
//
|
|
virtual void *getPointerToFunction(Function *F) = 0;
|
|
|
|
protected:
|
|
void emitGlobals();
|
|
|
|
public: // FIXME: protected: // API shared among subclasses
|
|
GenericValue getConstantValue(const Constant *C);
|
|
void StoreValueToMemory(GenericValue Val, GenericValue *Ptr, const Type *Ty);
|
|
GenericValue LoadValueFromMemory(GenericValue *Ptr, const Type *Ty);
|
|
void *CreateArgv(const std::vector<std::string> &InputArgv);
|
|
void InitializeMemory(const Constant *Init, void *Addr);
|
|
};
|
|
|
|
#endif
|