//===-- Interpreter.h ------------------------------------------*- C++ -*--===//
-//
+//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
-//
+//
//===----------------------------------------------------------------------===//
//
// This header file defines the interpreter structure
#include "llvm/Function.h"
#include "llvm/ExecutionEngine/ExecutionEngine.h"
#include "llvm/ExecutionEngine/GenericValue.h"
+#include "llvm/ADT/APInt.h"
#include "llvm/Support/InstVisitor.h"
#include "llvm/Support/CallSite.h"
#include "llvm/Target/TargetData.h"
-#include "Support/DataTypes.h"
+#include "llvm/Support/DataTypes.h"
+
+namespace llvm {
+
+class IntrinsicLowering;
+struct FunctionInfo;
+template<typename T> class generic_gep_type_iterator;
+class ConstantExpr;
+typedef generic_gep_type_iterator<User::const_op_iterator> gep_type_iterator;
-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
+// alloca. When the function returns, this object is popped off the execution
// stack, which causes the dtor to be run, which frees all the alloca'd memory.
//
class AllocaHolder {
// Interpreter - This class represents the entirety of the interpreter.
//
class Interpreter : public ExecutionEngine, public InstVisitor<Interpreter> {
- int ExitCode; // The exit code to be returned by the lli util
+ GenericValue ExitValue; // The return value of the called function
TargetData TD;
+ IntrinsicLowering *IL;
// The runtime stack of executing code. The top of the stack is the current
// function record.
std::vector<Function*> AtExitHandlers;
public:
- Interpreter(Module *M, bool isLittleEndian, bool isLongPointer);
- inline ~Interpreter() { }
+ explicit Interpreter(Module *M);
+ ~Interpreter();
- /// runAtExitHandlers - Run any functions registered by the
- /// program's calls to atexit(3), which we intercept and store in
- /// AtExitHandlers.
+ /// runAtExitHandlers - Run any functions registered by the program's calls to
+ /// atexit(3), which we intercept and store in AtExitHandlers.
///
- void runAtExitHandlers ();
+ void runAtExitHandlers();
+ static void Register() {
+ InterpCtor = create;
+ }
+
/// create - Create an interpreter ExecutionEngine. This can never fail.
///
- static ExecutionEngine *create(Module *M);
+ static ExecutionEngine *create(ModuleProvider *M, std::string *ErrorStr = 0);
/// run - Start execution with the specified function and arguments.
///
- virtual GenericValue run(Function *F,
- const std::vector<GenericValue> &ArgValues);
+ virtual GenericValue runFunction(Function *F,
+ const std::vector<GenericValue> &ArgValues);
+
+ /// recompileAndRelinkFunction - For the interpreter, functions are always
+ /// up-to-date.
+ ///
+ virtual void *recompileAndRelinkFunction(Function *F) {
+ return getPointerToFunction(F);
+ }
+
+ /// freeMachineCodeForFunction - The interpreter does not generate any code.
+ ///
+ void freeMachineCodeForFunction(Function *F) { }
// Methods used to execute code:
// Place a call on the stack
void visitSwitchInst(SwitchInst &I);
void visitBinaryOperator(BinaryOperator &I);
+ void visitICmpInst(ICmpInst &I);
+ void visitFCmpInst(FCmpInst &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 visitTruncInst(TruncInst &I);
+ void visitZExtInst(ZExtInst &I);
+ void visitSExtInst(SExtInst &I);
+ void visitFPTruncInst(FPTruncInst &I);
+ void visitFPExtInst(FPExtInst &I);
+ void visitUIToFPInst(UIToFPInst &I);
+ void visitSIToFPInst(SIToFPInst &I);
+ void visitFPToUIInst(FPToUIInst &I);
+ void visitFPToSIInst(FPToSIInst &I);
+ void visitPtrToIntInst(PtrToIntInst &I);
+ void visitIntToPtrInst(IntToPtrInst &I);
+ void visitBitCastInst(BitCastInst &I);
+ void visitSelectInst(SelectInst &I);
+
void visitCallSite(CallSite CS);
void visitCallInst(CallInst &I) { visitCallSite (CallSite (&I)); }
void visitInvokeInst(InvokeInst &I) { visitCallSite (CallSite (&I)); }
void visitUnwindInst(UnwindInst &I);
+ void visitUnreachableInst(UnreachableInst &I);
+
+ void visitShl(BinaryOperator &I);
+ void visitLShr(BinaryOperator &I);
+ void visitAShr(BinaryOperator &I);
- void visitShl(ShiftInst &I);
- void visitShr(ShiftInst &I);
- void visitVANextInst(VANextInst &I);
+ void visitVAArgInst(VAArgInst &I);
void visitInstruction(Instruction &I) {
- std::cerr << I;
+ cerr << I;
assert(0 && "Instruction not interpretable yet!");
}
- GenericValue callExternalFunction(Function *F,
+ GenericValue callExternalFunction(Function *F,
const std::vector<GenericValue> &ArgVals);
void exitCalled(GenericValue GV);
AtExitHandlers.push_back(F);
}
+ GenericValue *getFirstVarArg () {
+ return &(ECStack.back ().VarArgs[0]);
+ }
+
//FIXME: private:
public:
- GenericValue executeGEPOperation(Value *Ptr, User::op_iterator I,
- User::op_iterator E, ExecutionContext &SF);
+ GenericValue executeGEPOperation(Value *Ptr, gep_type_iterator I,
+ gep_type_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; }
void initializeExecutionEngine();
void initializeExternalFunctions();
+ GenericValue getConstantExprValue(ConstantExpr *CE, ExecutionContext &SF);
GenericValue getOperandValue(Value *V, ExecutionContext &SF);
- GenericValue executeCastOperation(Value *SrcVal, const Type *Ty,
- ExecutionContext &SF);
+ GenericValue executeTruncInst(Value *SrcVal, const Type *DstTy,
+ ExecutionContext &SF);
+ GenericValue executeSExtInst(Value *SrcVal, const Type *DstTy,
+ ExecutionContext &SF);
+ GenericValue executeZExtInst(Value *SrcVal, const Type *DstTy,
+ ExecutionContext &SF);
+ GenericValue executeFPTruncInst(Value *SrcVal, const Type *DstTy,
+ ExecutionContext &SF);
+ GenericValue executeFPExtInst(Value *SrcVal, const Type *DstTy,
+ ExecutionContext &SF);
+ GenericValue executeFPToUIInst(Value *SrcVal, const Type *DstTy,
+ ExecutionContext &SF);
+ GenericValue executeFPToSIInst(Value *SrcVal, const Type *DstTy,
+ ExecutionContext &SF);
+ GenericValue executeUIToFPInst(Value *SrcVal, const Type *DstTy,
+ ExecutionContext &SF);
+ GenericValue executeSIToFPInst(Value *SrcVal, const Type *DstTy,
+ ExecutionContext &SF);
+ GenericValue executePtrToIntInst(Value *SrcVal, const Type *DstTy,
+ ExecutionContext &SF);
+ GenericValue executeIntToPtrInst(Value *SrcVal, const Type *DstTy,
+ ExecutionContext &SF);
+ GenericValue executeBitCastInst(Value *SrcVal, const Type *DstTy,
+ ExecutionContext &SF);
+ GenericValue executeCastOperation(Instruction::CastOps opcode, Value *SrcVal,
+ const Type *Ty, ExecutionContext &SF);
void popStackAndReturnValueToCaller(const Type *RetTy, GenericValue Result);
+
};
+} // End llvm namespace
+
#endif
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