91 lines
2.8 KiB
C++
91 lines
2.8 KiB
C++
//===----------------------------------------------------------------------===//
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// LLVM INTERPRETER/DEBUGGER/PROFILER UTILITY
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//
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// This utility is an interactive frontend to almost all other LLVM
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// functionality. It may be used as an interpreter to run code, a debugger to
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// find problems, or a profiler to analyze execution frequencies.
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//
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//===----------------------------------------------------------------------===//
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#include "Interpreter.h"
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#include "Support/CommandLine.h"
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static cl::opt<string>
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InputFile(cl::desc("<input bytecode>"), cl::Positional, cl::init("-"));
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static cl::list<std::string>
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InputArgv(cl::ConsumeAfter, cl::desc("<program arguments>..."));
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static cl::opt<string>
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MainFunction ("f", cl::desc("Function to execute"), cl::init("main"),
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cl::value_desc("function name"));
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static cl::opt<bool>
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DebugMode("debug", cl::desc("Start program in debugger"));
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static cl::alias
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DebugModeA("d", cl::desc("Alias for -debug"), cl::aliasopt(DebugMode));
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static cl::opt<bool>
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TraceMode("trace", cl::desc("Enable Tracing"));
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static cl::opt<bool>
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ProfileMode("profile", cl::desc("Enable Profiling [unimp]"));
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//===----------------------------------------------------------------------===//
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// Interpreter ctor - Initialize stuff
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//
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Interpreter::Interpreter() : ExitCode(0), Profile(ProfileMode),
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Trace(TraceMode), CurFrame(-1) {
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CurMod = 0;
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loadModule(InputFile);
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// Initialize the "backend"
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initializeExecutionEngine();
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initializeExternalMethods();
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}
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//===----------------------------------------------------------------------===//
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// main Driver function
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//
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int main(int argc, char** argv) {
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cl::ParseCommandLineOptions(argc, argv, " llvm interpreter\n");
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// Add the module name to the start of the argv vector...
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//
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InputArgv.insert(InputArgv.begin(), InputFile);
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// Create the interpreter...
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Interpreter I;
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// Handle alternate names of the program. If started as llp, enable profiling
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// if started as ldb, enable debugging...
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//
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if (argv[0] == "ldb") // TODO: Obviously incorrect, but you get the idea
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DebugMode = true;
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else if (argv[0] == "llp")
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ProfileMode = true;
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// If running with the profiler, enable it now...
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if (ProfileMode) I.enableProfiling();
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if (TraceMode) I.enableTracing();
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// Start interpreter into the main function...
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//
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if (!I.callMainMethod(MainFunction, InputArgv) && !DebugMode) {
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// If not in debug mode and if the call succeeded, run the code now...
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I.run();
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}
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// If debug mode, allow the user to interact... also, if the user pressed
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// ctrl-c or execution hit an error, enter the event loop...
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if (DebugMode || I.isStopped())
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I.handleUserInput();
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// Return the status code of the program executed...
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return I.getExitCode();
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}
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