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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"
static cl::opt<string>
InputFile(cl::desc("<input bytecode>"), cl::Positional, cl::init("-"));
static cl::list<std::string>
InputArgv(cl::ConsumeAfter, cl::desc("<program arguments>..."));
static cl::opt<string>
MainFunction ("f", cl::desc("Function to execute"), cl::init("main"),
cl::value_desc("function name"));
static cl::opt<bool>
DebugMode("debug", cl::desc("Start program in debugger"));
static cl::alias
DebugModeA("d", cl::desc("Alias for -debug"), cl::aliasopt(DebugMode));
static cl::opt<bool>
TraceMode("trace", cl::desc("Enable Tracing"));
static cl::opt<bool>
ProfileMode("profile", cl::desc("Enable Profiling [unimp]"));
//===----------------------------------------------------------------------===//
// Interpreter ctor - Initialize stuff
//
Interpreter::Interpreter() : ExitCode(0), Profile(ProfileMode),
Trace(TraceMode), CurFrame(-1) {
CurMod = 0;
loadModule(InputFile);
// Initialize the "backend"
initializeExecutionEngine();
initializeExternalMethods();
}
//===----------------------------------------------------------------------===//
// main Driver function
//
int main(int argc, char** argv) {
cl::ParseCommandLineOptions(argc, argv, " llvm interpreter\n");
// Add the module name to the start of the argv vector...
//
InputArgv.insert(InputArgv.begin(), InputFile);
// 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();
// 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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