//
//===----------------------------------------------------------------------===//
-#include "ExecutionEngine.h"
-#include "Support/CommandLine.h"
-#include "llvm/Bytecode/Reader.h"
+#include "llvm/DerivedTypes.h"
#include "llvm/Module.h"
+#include "llvm/Bytecode/Reader.h"
+#include "llvm/ExecutionEngine/ExecutionEngine.h"
+#include "llvm/ExecutionEngine/GenericValue.h"
#include "llvm/Target/TargetMachineImpls.h"
+#include "llvm/Target/TargetData.h"
+#include "Support/CommandLine.h"
+#include "Support/Debug.h"
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"));
+ MainFunction("f", cl::desc("Function to execute"), cl::init("main"),
+ cl::value_desc("function name"));
cl::opt<bool> TraceMode("trace", cl::desc("Enable Tracing"));
cl::opt<bool> ForceInterpreter("force-interpreter",
- cl::desc("Force interpretation: disable JIT"),
- cl::init(false));
+ cl::desc("Force interpretation: disable JIT"),
+ cl::init(false));
}
-//===----------------------------------------------------------------------===//
-// ExecutionEngine Class Implementation
-//
+static std::vector<std::string> makeStringVector(const char **envp) {
+ std::vector<std::string> rv;
+ for (unsigned i = 0; envp[i]; ++i)
+ rv.push_back(envp[i]);
+ return rv;
+}
-ExecutionEngine::~ExecutionEngine() {
- delete &CurMod;
+static void *CreateArgv(ExecutionEngine *EE,
+ 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");
+
+ for (unsigned i = 0; i < InputArgv.size(); ++i) {
+ unsigned Size = InputArgv[i].size()+1;
+ char *Dest = new char[Size];
+ DEBUG(std::cerr << "ARGV[" << i << "] = " << (void*)Dest << "\n");
+
+ std::copy(InputArgv[i].begin(), InputArgv[i].end(), Dest);
+ Dest[Size-1] = 0;
+
+ // Endian safe: Result[i] = (PointerTy)Dest;
+ EE->StoreValueToMemory(PTOGV(Dest), (GenericValue*)(Result+i),
+ Type::LongTy);
+ }
+ Result[InputArgv.size()] = 0;
+ return Result;
+ } else { // 32 bit target?
+ int *Result = new int[InputArgv.size()+1];
+ DEBUG(std::cerr << "ARGV = " << (void*)Result << "\n");
+
+ for (unsigned i = 0; i < InputArgv.size(); ++i) {
+ unsigned Size = InputArgv[i].size()+1;
+ char *Dest = new char[Size];
+ DEBUG(std::cerr << "ARGV[" << i << "] = " << (void*)Dest << "\n");
+
+ std::copy(InputArgv[i].begin(), InputArgv[i].end(), Dest);
+ Dest[Size-1] = 0;
+
+ // Endian safe: Result[i] = (PointerTy)Dest;
+ EE->StoreValueToMemory(PTOGV(Dest), (GenericValue*)(Result+i),
+ Type::IntTy);
+ }
+ Result[InputArgv.size()] = 0; // null terminate it
+ return Result;
+ }
+}
+
+/// callAsMain - Call the function named FnName 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. Returns the 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);
+ 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;
}
//===----------------------------------------------------------------------===//
// main Driver function
//
-int main(int argc, char** argv, const char ** envp) {
+int main(int argc, char **argv, const char **envp) {
cl::ParseCommandLineOptions(argc, argv,
- " llvm interpreter & dynamic compiler\n");
+ " llvm interpreter & dynamic compiler\n");
// Load the bytecode...
std::string ErrorMsg;
}
ExecutionEngine *EE =
- ExecutionEngine::create (M, ForceInterpreter, TraceMode);
- assert (EE && "Couldn't create an ExecutionEngine, not even an interpreter?");
+ ExecutionEngine::create(M, ForceInterpreter, TraceMode);
+ assert(EE && "Couldn't create an ExecutionEngine, not even an interpreter?");
// 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 ());
+ 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 = EE->run(MainFunction, InputArgv, envp);
+ int ExitCode = callAsMain(EE, M, MainFunction, InputArgv,
+ makeStringVector(envp));
// Now that we are done executing the program, shut down the execution engine
delete EE;