1 //===----------------------------------------------------------------------===//
2 // LLVM INTERPRETER/DEBUGGER/PROFILER UTILITY
4 // This utility is an interactive frontend to almost all other LLVM
5 // functionality. It may be used as an interpreter to run code, a debugger to
6 // find problems, or a profiler to analyze execution frequencies.
8 //===----------------------------------------------------------------------===//
10 #include "Interpreter.h"
11 #include "llvm/Support/CommandLine.h"
13 cl::String InputFilename("" , "Input filename", cl::NoFlags, "-");
14 cl::String MainFunction ("f" , "Function to execute", cl::NoFlags, "main");
15 cl::Flag DebugMode ("debug" , "Start program in debugger");
16 cl::Alias DebugModeA ("d" , "Alias for -debug", cl::NoFlags, DebugMode);
17 cl::Flag ProfileMode ("profile", "Enable Profiling [unimp]");
19 //===----------------------------------------------------------------------===//
20 // Interpreter ctor - Initialize stuff
22 Interpreter::Interpreter() : ExitCode(0), Profile(ProfileMode), CurFrame(-1) {
24 loadModule(InputFilename);
26 // Initialize the "backend"
27 initializeExecutionEngine();
30 //===----------------------------------------------------------------------===//
31 // main Driver function
33 int main(int argc, char** argv) {
34 cl::ParseCommandLineOptions(argc, argv, " llvm interpreter\n");
36 // Create the interpreter...
39 // Handle alternate names of the program. If started as llp, enable profiling
40 // if started as ldb, enable debugging...
42 if (argv[0] == "ldb") // TODO: Obviously incorrect, but you get the idea
44 else if (argv[0] == "llp")
47 // If running with the profiler, enable it now...
48 if (ProfileMode) I.enableProfiling();
50 // Start interpreter into the main function...
52 if (!I.callMainMethod(MainFunction, InputFilename) && !DebugMode) {
53 // If not in debug mode and if the call succeeded, run the code now...
57 // If debug mode, allow the user to interact... also, if the user pressed
58 // ctrl-c or execution hit an error, enter the event loop...
59 if (DebugMode || I.isStopped())
62 // Return the status code of the program executed...
63 return I.getExitCode();