//===- lli.cpp - LLVM Interpreter / Dynamic compiler ----------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
//
// This utility provides a way to execute LLVM bytecode without static
// compilation. This consists of a very simple and slow (but portable)
//
//===----------------------------------------------------------------------===//
-#include "ExecutionEngine.h"
-#include "GenericValue.h"
-#include "Support/CommandLine.h"
-#include "Support/Debug.h"
-#include "llvm/Bytecode/Reader.h"
+#include "llvm/DerivedTypes.h"
#include "llvm/Module.h"
+#include "llvm/ModuleProvider.h"
+#include "llvm/Bytecode/Reader.h"
+#include "llvm/ExecutionEngine/ExecutionEngine.h"
+#include "llvm/ExecutionEngine/GenericValue.h"
#include "llvm/Target/TargetMachineImpls.h"
-#include "llvm/DerivedTypes.h"
#include "llvm/Target/TargetData.h"
+#include "Support/CommandLine.h"
+#include "Support/Debug.h"
+#include "Support/SystemUtils.h"
+
+using namespace llvm;
namespace {
cl::opt<std::string>
InputArgv(cl::ConsumeAfter, cl::desc("<program arguments>..."));
cl::opt<std::string>
- MainFunction ("f", cl::desc("Function to execute"), cl::init("main"),
- cl::value_desc("function name"));
-
- cl::opt<bool> TraceMode("trace", cl::desc("Enable Tracing"));
+ MainFunction("f", cl::desc("Function to execute"), cl::init("main"),
+ cl::value_desc("function name"));
cl::opt<bool> ForceInterpreter("force-interpreter",
- cl::desc("Force interpretation: disable JIT"),
- cl::init(false));
+ cl::desc("Force interpretation: disable JIT"),
+ cl::init(false));
+
+ cl::opt<std::string>
+ FakeArgv0("fake-argv0",
+ cl::desc("Override the 'argv[0]' value passed into the executing"
+ " program"), cl::value_desc("executable"));
}
-static std::vector<std::string> makeStringVector (const char **envp) {
+static std::vector<std::string> makeStringVector(char * const *envp) {
std::vector<std::string> rv;
for (unsigned i = 0; envp[i]; ++i)
- rv.push_back (envp[i]);
+ rv.push_back(envp[i]);
return rv;
}
static void *CreateArgv(ExecutionEngine *EE,
- const std::vector<std::string> &InputArgv) {
+ const std::vector<std::string> &InputArgv) {
if (EE->getTargetData().getPointerSize() == 8) { // 64 bit target?
PointerTy *Result = new PointerTy[InputArgv.size()+1];
DEBUG(std::cerr << "ARGV = " << (void*)Result << "\n");
// Endian safe: Result[i] = (PointerTy)Dest;
EE->StoreValueToMemory(PTOGV(Dest), (GenericValue*)(Result+i),
- Type::LongTy);
+ Type::LongTy);
}
Result[InputArgv.size()] = 0;
return Result;
// Endian safe: Result[i] = (PointerTy)Dest;
EE->StoreValueToMemory(PTOGV(Dest), (GenericValue*)(Result+i),
- Type::IntTy);
+ Type::IntTy);
}
Result[InputArgv.size()] = 0; // null terminate it
return Result;
/// from calling FnName, or -1 and prints an error msg. if the named
/// function cannot be found.
///
-int callAsMain (ExecutionEngine *EE, Module *M, const std::string &FnName,
- const std::vector<std::string> &Args,
- const std::vector<std::string> &EnvVars) {
- Function *Fn = M->getNamedFunction (FnName);
+int callAsMain(ExecutionEngine *EE, ModuleProvider *MP,
+ const std::string &FnName,
+ const std::vector<std::string> &Args,
+ const std::vector<std::string> &EnvVars) {
+ Function *Fn = MP->getModule()->getNamedFunction(FnName);
if (!Fn) {
std::cerr << "Function '" << FnName << "' not found in module.\n";
return -1;
}
std::vector<GenericValue> GVArgs;
GenericValue GVArgc;
- GVArgc.IntVal = Args.size ();
- GVArgs.push_back (GVArgc); // Arg #0 = argc.
- GVArgs.push_back (PTOGV (CreateArgv (EE, Args))); // Arg #1 = argv.
- GVArgs.push_back (PTOGV (CreateArgv (EE, EnvVars))); // Arg #2 = envp.
- return EE->run (Fn, GVArgs).IntVal;
+ GVArgc.IntVal = Args.size();
+ GVArgs.push_back(GVArgc); // Arg #0 = argc.
+ GVArgs.push_back(PTOGV(CreateArgv(EE, Args))); // Arg #1 = argv.
+ assert(((char **)GVTOP(GVArgs[1]))[0] && "argv[0] was null after CreateArgv");
+ GVArgs.push_back(PTOGV(CreateArgv(EE, EnvVars))); // Arg #2 = envp.
+ return EE->run(Fn, GVArgs).IntVal;
}
//===----------------------------------------------------------------------===//
// main Driver function
//
-int main(int argc, char **argv, const char **envp) {
+int main(int argc, char **argv, char * const *envp) {
cl::ParseCommandLineOptions(argc, argv,
- " llvm interpreter & dynamic compiler\n");
+ " llvm interpreter & dynamic compiler\n");
// Load the bytecode...
std::string ErrorMsg;
- Module *M = ParseBytecodeFile(InputFile, &ErrorMsg);
- if (M == 0) {
- std::cout << "Error parsing '" << InputFile << "': "
- << ErrorMsg << "\n";
+ ModuleProvider *MP = 0;
+ try {
+ MP = getBytecodeModuleProvider(InputFile);
+ } catch (std::string &err) {
+ std::cerr << "Error loading program '" << InputFile << "': " << err << "\n";
exit(1);
}
ExecutionEngine *EE =
- ExecutionEngine::create (M, ForceInterpreter, TraceMode);
- assert (EE && "Couldn't create an ExecutionEngine, not even an interpreter?");
+ ExecutionEngine::create(MP, ForceInterpreter);
+ assert(EE && "Couldn't create an ExecutionEngine, not even an interpreter?");
+
+ // 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 (InputFile.rfind(".bc") == InputFile.length() - 3)
+ InputFile.erase(InputFile.length() - 3);
+ }
// Add the module's name to the start of the vector of arguments to main().
- // But delete .bc first, since programs (and users) might not expect to
- // see it.
- const std::string ByteCodeFileSuffix (".bc");
- if (InputFile.rfind (ByteCodeFileSuffix) ==
- InputFile.length () - ByteCodeFileSuffix.length ()) {
- InputFile.erase (InputFile.length () - ByteCodeFileSuffix.length ());
- }
InputArgv.insert(InputArgv.begin(), InputFile);
// Run the main function!
- int ExitCode = callAsMain (EE, M, MainFunction, InputArgv,
- makeStringVector (envp));
+ int ExitCode = callAsMain(EE, MP, MainFunction, InputArgv,
+ makeStringVector(envp));
// Now that we are done executing the program, shut down the execution engine
delete EE;