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//===----------------------------------------------------------------------===//
// LLVM INTERPRETER/DEBUGGER/PROFILER UTILITY
//
// This utility is an interactive frontend to almost all other LLVM
// functionality. It may be used as an interpreter to run code, a debugger to
// find problems, or a profiler to analyze execution frequencies.
//
//===----------------------------------------------------------------------===//
#include "Interpreter.h"
#include "Support/CommandLine.h"
cl::StringList InputArgv("" , "Input command line", cl::ConsumeAfter);
cl::String MainFunction ("f" , "Function to execute", cl::NoFlags, "main");
cl::Flag DebugMode ("debug" , "Start program in debugger");
cl::Alias DebugModeA ("d" , "Alias for -debug", cl::NoFlags, DebugMode);
cl::Flag TraceMode ("trace" , "Enable Tracing");
cl::Flag ProfileMode ("profile", "Enable Profiling [unimp]");
//===----------------------------------------------------------------------===//
// Interpreter ctor - Initialize stuff
//
Interpreter::Interpreter() : ExitCode(0), Profile(ProfileMode),
Trace(TraceMode), CurFrame(-1) {
CurMod = 0;
loadModule(InputArgv.size() ? InputArgv[0] : "-");
// Initialize the "backend"
initializeExecutionEngine();
initializeExternalMethods();
}
//===----------------------------------------------------------------------===//
// main Driver function
//
int main(int argc, char** argv) {
cl::ParseCommandLineOptions(argc, argv, " llvm interpreter\n");
// Create the interpreter...
Interpreter I;
// Handle alternate names of the program. If started as llp, enable profiling
// if started as ldb, enable debugging...
//
if (argv[0] == "ldb") // TODO: Obviously incorrect, but you get the idea
DebugMode = true;
else if (argv[0] == "llp")
ProfileMode = true;
// If running with the profiler, enable it now...
if (ProfileMode) I.enableProfiling();
if (TraceMode) I.enableTracing();
// Ensure that there is at least one argument... the name of the program.
// This is only unavailable if the program was read from stdin, instead of a
// file.
//
if (InputArgv.empty())
InputArgv.push_back("from-stdin-prog");
// Start interpreter into the main function...
//
if (!I.callMainMethod(MainFunction, InputArgv) && !DebugMode) {
// If not in debug mode and if the call succeeded, run the code now...
I.run();
}
// If debug mode, allow the user to interact... also, if the user pressed
// ctrl-c or execution hit an error, enter the event loop...
if (DebugMode || I.isStopped())
I.handleUserInput();
// Return the status code of the program executed...
return I.getExitCode();
}
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