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68 lines
2.4 KiB
C++
68 lines
2.4 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 "llvm/Support/CommandLine.h"
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#include "llvm/Bytecode/Reader.h"
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cl::String InputFilename("" , "Input filename", cl::NoFlags, "-");
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cl::String MainFunction ("f" , "Function to execute", cl::NoFlags, "main");
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cl::Flag DebugMode ("debug" , "Start program in debugger");
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cl::Alias DebugModeA ("d" , "Alias for -debug", cl::NoFlags, DebugMode);
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cl::Flag ProfileMode ("profile", "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), CurFrame(-1) {
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CurMod = ParseBytecodeFile(InputFilename);
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if (CurMod == 0) {
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cout << "Error parsing '" << InputFilename << "': No module loaded.\n";
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}
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// Initialize the "backend"
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initializeExecutionEngine();
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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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// 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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// Start interpreter into the main function...
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//
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if (!I.callMethod(MainFunction) && !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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