+ // If the user specifically requested an argv[0] to pass into the program,
+ // do it now.
+ if (!FakeArgv0.empty()) {
+ InputFile = FakeArgv0;
+ } else {
+ // Otherwise, if there is a .bc suffix on the executable strip it off, it
+ // might confuse the program.
+ if (StringRef(InputFile).endswith(".bc"))
+ InputFile.erase(InputFile.length() - 3);
+ }
+
+ // Add the module's name to the start of the vector of arguments to main().
+ InputArgv.insert(InputArgv.begin(), InputFile);
+
+ // 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);