X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FExecutionEngine%2FInterpreter%2FInterpreter.h;h=47f5c95f152e3630aef46775cbf6155e7c95b884;hb=f58815e161c8c91075dd1af7a277314190ebc286;hp=e7c7942b0c9383affc622c19ac0b22812b6d7bb0;hpb=2fbfdcffd3e0cf41422aaa6c526c37cb02b81341;p=oota-llvm.git diff --git a/lib/ExecutionEngine/Interpreter/Interpreter.h b/lib/ExecutionEngine/Interpreter/Interpreter.h index e7c7942b0c9..47f5c95f152 100644 --- a/lib/ExecutionEngine/Interpreter/Interpreter.h +++ b/lib/ExecutionEngine/Interpreter/Interpreter.h @@ -7,40 +7,17 @@ #ifndef LLI_INTERPRETER_H #define LLI_INTERPRETER_H -// Uncomment this line to enable profiling of structure field accesses. -#define PROFILE_STRUCTURE_FIELDS 1 - - -#include "llvm/Module.h" -#include "llvm/Function.h" -#include "llvm/BasicBlock.h" +#include "../ExecutionEngine.h" +#include "../GenericValue.h" #include "Support/DataTypes.h" #include "llvm/Assembly/CachedWriter.h" +#include "llvm/Target/TargetData.h" +#include "llvm/BasicBlock.h" +#include "llvm/Support/InstVisitor.h" -extern CachedWriter CW; // Object to accellerate printing of LLVM - -struct MethodInfo; // Defined in ExecutionAnnotations.h -class CallInst; -class ReturnInst; -class BranchInst; -class AllocationInst; - -typedef uint64_t PointerTy; - -union GenericValue { - bool BoolVal; - unsigned char UByteVal; - signed char SByteVal; - unsigned short UShortVal; - signed short ShortVal; - unsigned int UIntVal; - signed int IntVal; - uint64_t ULongVal; - int64_t LongVal; - double DoubleVal; - float FloatVal; - PointerTy PointerVal; -}; +extern CachedWriter CW; // Object to accelerate printing of LLVM + +struct FunctionInfo; // Defined in ExecutionAnnotations.h // AllocaHolder - Object to track all of the blocks of memory allocated by // alloca. When the function returns, this object is poped off the execution @@ -78,13 +55,13 @@ typedef std::vector ValuePlaneTy; // executing. // struct ExecutionContext { - Function *CurMethod; // The currently executing function + Function *CurFunction;// The currently executing function BasicBlock *CurBB; // The currently executing BB BasicBlock::iterator CurInst; // The next instruction to execute - MethodInfo *MethInfo; // The MethInfo annotation for the function + FunctionInfo *FuncInfo; // The FuncInfo annotation for the function std::vector Values;// ValuePlanes for each type + std::vector VarArgs; // Values passed through an ellipsis - BasicBlock *PrevBB; // The previous BB or null if in first BB CallInst *Caller; // Holds the call that called subframes. // NULL if main func or debugger invoked fn AllocaHolderHandle Allocas; // Track memory allocated by alloca @@ -92,25 +69,40 @@ struct ExecutionContext { // Interpreter - This class represents the entirety of the interpreter. // -class Interpreter { - Module *CurMod; // The current Module being executed (0 if none) +class Interpreter : public ExecutionEngine, public InstVisitor { int ExitCode; // The exit code to be returned by the lli util bool Profile; // Profiling enabled? bool Trace; // Tracing enabled? int CurFrame; // The current stack frame being inspected + TargetData TD; // The runtime stack of executing code. The top of the stack is the current // function record. std::vector ECStack; + // AtExitHandlers - List of functions to call when the program exits. + std::vector AtExitHandlers; public: - Interpreter(); - inline ~Interpreter() { CW.setModule(0); delete CurMod; } + Interpreter(Module *M, bool isLittleEndian, bool isLongPointer, + bool TraceMode); + inline ~Interpreter() { CW.setModule(0); } + + /// create - Create an interpreter ExecutionEngine. This can never fail. + /// + static ExecutionEngine *create(Module *M, bool TraceMode); - // getExitCode - return the code that should be the exit code for the lli - // utility. + /// getExitCode - return the code that should be the exit code for the lli + /// utility. + /// inline int getExitCode() const { return ExitCode; } + /// run - Start execution with the specified function and arguments. + /// + virtual int run(const std::string &FnName, + const std::vector &Args, + const char ** envp); + + // enableProfiling() - Turn profiling on, clear stats? void enableProfiling() { Profile = true; } void enableTracing() { Trace = true; } @@ -118,24 +110,21 @@ public: void handleUserInput(); // User Interation Methods... - void loadModule(const std::string &Filename); - bool flushModule(); - bool callMethod(const std::string &Name); // return true on failure + bool callFunction(const std::string &Name); // return true on failure void setBreakpoint(const std::string &Name); void infoValue(const std::string &Name); void print(const std::string &Name); static void print(const Type *Ty, GenericValue V); static void printValue(const Type *Ty, GenericValue V); - // Hack until we can parse command line args... - bool callMainMethod(const std::string &MainName, - const std::vector &InputFilename); + bool callMainFunction(const std::string &MainName, + const std::vector &InputFilename); void list(); // Do the 'list' command void printStackTrace(); // Do the 'backtrace' command // Code execution methods... - void callMethod(Function *F, const std::vector &ArgVals); + void callFunction(Function *F, const std::vector &ArgVals); bool executeInstruction(); // Execute one instruction... void stepInstruction(); // Do the 'step' command @@ -144,17 +133,35 @@ public: void finish(); // Do the 'finish' command // Opcode Implementations - void executeCallInst(CallInst *I, ExecutionContext &SF); - void executeRetInst(ReturnInst *I, ExecutionContext &SF); - void executeBrInst(BranchInst *I, ExecutionContext &SF); - void executeAllocInst(AllocationInst *I, ExecutionContext &SF); - GenericValue callExternalMethod(Function *F, - const std::vector &ArgVals); + void visitReturnInst(ReturnInst &I); + void visitBranchInst(BranchInst &I); + void visitSwitchInst(SwitchInst &I); + + void visitBinaryOperator(BinaryOperator &I); + void visitAllocationInst(AllocationInst &I); + void visitFreeInst(FreeInst &I); + void visitLoadInst(LoadInst &I); + void visitStoreInst(StoreInst &I); + void visitGetElementPtrInst(GetElementPtrInst &I); + + void visitPHINode(PHINode &PN) { assert(0 && "PHI nodes already handled!"); } + void visitCastInst(CastInst &I); + void visitCallInst(CallInst &I); + void visitShl(ShiftInst &I); + void visitShr(ShiftInst &I); + void visitVarArgInst(VarArgInst &I); + void visitInstruction(Instruction &I) { + std::cerr << I; + assert(0 && "Instruction not interpretable yet!"); + } + + GenericValue callExternalFunction(Function *F, + const std::vector &ArgVals); void exitCalled(GenericValue GV); - // getCurrentMethod - Return the currently executing method - inline Function *getCurrentMethod() const { - return CurFrame < 0 ? 0 : ECStack[CurFrame].CurMethod; + // getCurrentFunction - Return the currently executing function + inline Function *getCurrentFunction() const { + return CurFrame < 0 ? 0 : ECStack[CurFrame].CurFunction; } // isStopped - Return true if a program is stopped. Return false if no @@ -162,7 +169,24 @@ public: // inline bool isStopped() const { return !ECStack.empty(); } + void addAtExitHandler(Function *F) { + AtExitHandlers.push_back(F); + } + + //FIXME: private: +public: + GenericValue executeGEPOperation(Value *Ptr, User::op_iterator I, + User::op_iterator E, ExecutionContext &SF); + private: // Helper functions + // SwitchToNewBasicBlock - Start execution in a new basic block and run any + // PHI nodes in the top of the block. This is used for intraprocedural + // control flow. + // + void SwitchToNewBasicBlock(BasicBlock *Dest, ExecutionContext &SF); + + void *getPointerToFunction(Function *F) { return (void*)F; } + // getCurrentExecutablePath() - Return the directory that the lli executable // lives in. // @@ -192,9 +216,8 @@ private: // Helper functions Value *ChooseOneOption(const std::string &Name, const std::vector &Opts); - void initializeExecutionEngine(); - void initializeExternalMethods(); + void initializeExternalFunctions(); }; #endif