+ // Call the main function from M as if its signature were:
+ // int main (int argc, char **argv, const char **envp)
+ // using the contents of Args to determine argc & argv, and the contents of
+ // EnvVars to determine envp.
+ //
+ Function *EntryFn = Mod->getFunction(EntryFunc);
+ if (!EntryFn) {
+ errs() << '\'' << EntryFunc << "\' function not found in module.\n";
+ return -1;
+ }
+
+ // If the program doesn't explicitly call exit, we will need the Exit
+ // function later on to make an explicit call, so get the function now.
+ Constant *Exit = Mod->getOrInsertFunction("exit", Type::getVoidTy(Context),
+ Type::getInt32Ty(Context),
+ NULL);
+
+ // Reset errno to zero on entry to main.
+ errno = 0;
+
+ // Run static constructors.
+ EE->runStaticConstructorsDestructors(false);
+
+ if (NoLazyCompilation) {
+ for (Module::iterator I = Mod->begin(), E = Mod->end(); I != E; ++I) {
+ Function *Fn = &*I;
+ if (Fn != EntryFn && !Fn->isDeclaration())
+ EE->getPointerToFunction(Fn);
+ }
+ }
+
+ // Run main.
+ int Result = EE->runFunctionAsMain(EntryFn, InputArgv, envp);
+
+ // Run static destructors.
+ EE->runStaticConstructorsDestructors(true);
+
+ // If the program didn't call exit explicitly, we should call it now.
+ // This ensures that any atexit handlers get called correctly.
+ if (Function *ExitF = dyn_cast<Function>(Exit)) {