1 //===- Interpreter.cpp - Top-Level LLVM Interpreter Implementation --------===//
3 // This file implements the top-level functionality for the LLVM interpreter.
4 // This interpreter is designed to be a very simple, portable, inefficient
7 //===----------------------------------------------------------------------===//
9 #include "Interpreter.h"
10 #include "llvm/Target/TargetMachineImpls.h"
12 /// createInterpreter - Create a new interpreter object. This can never fail.
14 ExecutionEngine *ExecutionEngine::createInterpreter(Module *M,
18 return new Interpreter(M, Config, DebugMode, TraceMode);
21 //===----------------------------------------------------------------------===//
22 // Interpreter ctor - Initialize stuff
24 Interpreter::Interpreter(Module *M, unsigned Config,
25 bool DebugMode, bool TraceMode)
26 : ExecutionEngine(M), ExitCode(0), Debug(DebugMode), Trace(TraceMode),
27 CurFrame(-1), TD("lli", (Config & TM::EndianMask) == TM::LittleEndian,
29 (Config & TM::PtrSizeMask) == TM::PtrSize64 ? 8 : 4,
30 (Config & TM::PtrSizeMask) == TM::PtrSize64 ? 8 : 4,
31 (Config & TM::PtrSizeMask) == TM::PtrSize64 ? 8 : 4) {
34 // Initialize the "backend"
35 initializeExecutionEngine();
36 initializeExternalMethods();
37 CW.setModule(M); // Update Writer
40 /// run - Start execution with the specified function and arguments.
42 int Interpreter::run(const std::string &MainFunction,
43 const std::vector<std::string> &Args) {
44 // Start interpreter into the main function...
46 if (!callMainMethod(MainFunction, Args) && !Debug) {
47 // If not in debug mode and if the call succeeded, run the code now...
51 // If debug mode, allow the user to interact... also, if the user pressed
52 // ctrl-c or execution hit an error, enter the event loop...
53 if (Debug || isStopped())