Initial checkin of new LLI with JIT compiler
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5126 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/ExecutionEngine/Interpreter/Interpreter.cpp b/lib/ExecutionEngine/Interpreter/Interpreter.cpp
new file mode 100644
index 0000000..678c77a
--- /dev/null
+++ b/lib/ExecutionEngine/Interpreter/Interpreter.cpp
@@ -0,0 +1,56 @@
+//===- Interpreter.cpp - Top-Level LLVM Interpreter Implementation --------===//
+//
+// This file implements the top-level functionality for the LLVM interpreter.
+// This interpreter is designed to be a very simple, portable, inefficient
+// interpreter.
+//
+//===----------------------------------------------------------------------===//
+
+#include "Interpreter.h"
+#include "llvm/Target/TargetMachineImpls.h"
+
+/// createInterpreter - Create a new interpreter object. This can never fail.
+///
+ExecutionEngine *ExecutionEngine::createInterpreter(Module *M,
+ unsigned Config,
+ bool DebugMode,
+ bool TraceMode) {
+ return new Interpreter(M, Config, DebugMode, TraceMode);
+}
+
+//===----------------------------------------------------------------------===//
+// Interpreter ctor - Initialize stuff
+//
+Interpreter::Interpreter(Module *M, unsigned Config,
+ bool DebugMode, bool TraceMode)
+ : ExecutionEngine(M), ExitCode(0), Debug(DebugMode), Trace(TraceMode),
+ CurFrame(-1), TD("lli", (Config & TM::EndianMask) == TM::LittleEndian,
+ 1, 4,
+ (Config & TM::PtrSizeMask) == TM::PtrSize64 ? 8 : 4,
+ (Config & TM::PtrSizeMask) == TM::PtrSize64 ? 8 : 4) {
+
+ setTargetData(TD);
+ // Initialize the "backend"
+ initializeExecutionEngine();
+ initializeExternalMethods();
+ CW.setModule(M); // Update Writer
+}
+
+/// run - Start execution with the specified function and arguments.
+///
+int Interpreter::run(const std::string &MainFunction,
+ const std::vector<std::string> &Args) {
+ // Start interpreter into the main function...
+ //
+ if (!callMainMethod(MainFunction, Args) && !Debug) {
+ // If not in debug mode and if the call succeeded, run the code now...
+ 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 (Debug || isStopped())
+ handleUserInput();
+ return ExitCode;
+}
+