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Diffstat (limited to 'tools/llvm-ld/llvm-ld.cpp')
| -rw-r--r-- | tools/llvm-ld/llvm-ld.cpp | 732 |
1 files changed, 0 insertions, 732 deletions
diff --git a/tools/llvm-ld/llvm-ld.cpp b/tools/llvm-ld/llvm-ld.cpp deleted file mode 100644 index ecf0476eb2..0000000000 --- a/tools/llvm-ld/llvm-ld.cpp +++ /dev/null @@ -1,732 +0,0 @@ -//===- llvm-ld.cpp - LLVM 'ld' compatible linker --------------------------===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This utility is intended to be compatible with GCC, and follows standard -// system 'ld' conventions. As such, the default output file is ./a.out. -// Additionally, this program outputs a shell script that is used to invoke LLI -// to execute the program. In this manner, the generated executable (a.out for -// example), is directly executable, whereas the bitcode file actually lives in -// the a.out.bc file generated by this program. -// -// Note that if someone (or a script) deletes the executable program generated, -// the .bc file will be left around. Considering that this is a temporary hack, -// I'm not too worried about this. -// -//===----------------------------------------------------------------------===// - -#include "llvm/LinkAllVMCore.h" -#include "llvm/Linker.h" -#include "llvm/LLVMContext.h" -#include "llvm/Support/Program.h" -#include "llvm/Module.h" -#include "llvm/PassManager.h" -#include "llvm/Bitcode/ReaderWriter.h" -#include "llvm/Target/TargetData.h" -#include "llvm/Target/TargetMachine.h" -#include "llvm/Support/CommandLine.h" -#include "llvm/Support/FileUtilities.h" -#include "llvm/Support/ManagedStatic.h" -#include "llvm/Support/MemoryBuffer.h" -#include "llvm/Support/PrettyStackTrace.h" -#include "llvm/Support/SystemUtils.h" -#include "llvm/Support/ToolOutputFile.h" -#include "llvm/Support/Signals.h" -#include <memory> -#include <cstring> -using namespace llvm; - -// Rightly this should go in a header file but it just seems such a waste. -namespace llvm { -extern void Optimize(Module*); -} - -// Input/Output Options -static cl::list<std::string> InputFilenames(cl::Positional, cl::OneOrMore, - cl::desc("<input bitcode files>")); - -static cl::opt<std::string> OutputFilename("o", cl::init("a.out"), - cl::desc("Override output filename"), - cl::value_desc("filename")); - -static cl::opt<std::string> BitcodeOutputFilename("b", cl::init(""), - cl::desc("Override bitcode output filename"), - cl::value_desc("filename")); - -static cl::opt<bool> Verbose("v", - cl::desc("Print information about actions taken")); - -static cl::list<std::string> LibPaths("L", cl::Prefix, - cl::desc("Specify a library search path"), - cl::value_desc("directory")); - -static cl::list<std::string> FrameworkPaths("F", cl::Prefix, - cl::desc("Specify a framework search path"), - cl::value_desc("directory")); - -static cl::list<std::string> Libraries("l", cl::Prefix, - cl::desc("Specify libraries to link to"), - cl::value_desc("library prefix")); - -static cl::list<std::string> Frameworks("framework", - cl::desc("Specify frameworks to link to"), - cl::value_desc("framework")); - -// Options to control the linking, optimization, and code gen processes -static cl::opt<bool> LinkAsLibrary("link-as-library", - cl::desc("Link the .bc files together as a library, not an executable")); - -static cl::alias Relink("r", cl::aliasopt(LinkAsLibrary), - cl::desc("Alias for -link-as-library")); - -static cl::opt<bool> Native("native", - cl::desc("Generate a native binary instead of a shell script")); - -static cl::opt<bool>NativeCBE("native-cbe", - cl::desc("Generate a native binary with the C backend and GCC")); - -static cl::list<std::string> PostLinkOpts("post-link-opts", - cl::value_desc("path"), - cl::desc("Run one or more optimization programs after linking")); - -static cl::list<std::string> XLinker("Xlinker", cl::value_desc("option"), - cl::desc("Pass options to the system linker")); - -// Compatibility options that llvm-ld ignores but are supported for -// compatibility with LD -static cl::opt<std::string> CO3("soname", cl::Hidden, - cl::desc("Compatibility option: ignored")); - -static cl::opt<std::string> CO4("version-script", cl::Hidden, - cl::desc("Compatibility option: ignored")); - -static cl::opt<bool> CO5("eh-frame-hdr", cl::Hidden, - cl::desc("Compatibility option: ignored")); - -static cl::opt<std::string> CO6("h", cl::Hidden, - cl::desc("Compatibility option: ignored")); - -static cl::opt<bool> CO7("start-group", cl::Hidden, - cl::desc("Compatibility option: ignored")); - -static cl::opt<bool> CO8("end-group", cl::Hidden, - cl::desc("Compatibility option: ignored")); - -static cl::opt<std::string> CO9("m", cl::Hidden, - cl::desc("Compatibility option: ignored")); - -/// This is just for convenience so it doesn't have to be passed around -/// everywhere. -static std::string progname; - -/// FileRemover objects to clean up output files in the event of an error. -static FileRemover OutputRemover; -static FileRemover BitcodeOutputRemover; - -/// PrintAndExit - Prints a message to standard error and exits with error code -/// -/// Inputs: -/// Message - The message to print to standard error. -/// -static void PrintAndExit(const std::string &Message, Module *M, int errcode = 1) { - errs() << progname << ": " << Message << "\n"; - delete M; - llvm_shutdown(); - exit(errcode); -} - -static void PrintCommand(const std::vector<const char*> &args) { - std::vector<const char*>::const_iterator I = args.begin(), E = args.end(); - for (; I != E; ++I) - if (*I) - errs() << "'" << *I << "'" << " "; - errs() << "\n"; -} - -/// CopyEnv - This function takes an array of environment variables and makes a -/// copy of it. This copy can then be manipulated any way the caller likes -/// without affecting the process's real environment. -/// -/// Inputs: -/// envp - An array of C strings containing an environment. -/// -/// Return value: -/// NULL - An error occurred. -/// -/// Otherwise, a pointer to a new array of C strings is returned. Every string -/// in the array is a duplicate of the one in the original array (i.e. we do -/// not copy the char *'s from one array to another). -/// -static char ** CopyEnv(char ** const envp) { - // Count the number of entries in the old list; - unsigned entries; // The number of entries in the old environment list - for (entries = 0; envp[entries] != NULL; entries++) - /*empty*/; - - // Add one more entry for the NULL pointer that ends the list. - ++entries; - - // If there are no entries at all, just return NULL. - if (entries == 0) - return NULL; - - // Allocate a new environment list. - char **newenv = new char* [entries]; - if (newenv == NULL) - return NULL; - - // Make a copy of the list. Don't forget the NULL that ends the list. - entries = 0; - while (envp[entries] != NULL) { - size_t len = strlen(envp[entries]) + 1; - newenv[entries] = new char[len]; - memcpy(newenv[entries], envp[entries], len); - ++entries; - } - newenv[entries] = NULL; - - return newenv; -} - - -/// RemoveEnv - Remove the specified environment variable from the environment -/// array. -/// -/// Inputs: -/// name - The name of the variable to remove. It cannot be NULL. -/// envp - The array of environment variables. It cannot be NULL. -/// -/// Notes: -/// This is mainly done because functions to remove items from the environment -/// are not available across all platforms. In particular, Solaris does not -/// seem to have an unsetenv() function or a setenv() function (or they are -/// undocumented if they do exist). -/// -static void RemoveEnv(const char * name, char ** const envp) { - for (unsigned index=0; envp[index] != NULL; index++) { - // Find the first equals sign in the array and make it an EOS character. - char *p = strchr (envp[index], '='); - if (p == NULL) - continue; - else - *p = '\0'; - - // Compare the two strings. If they are equal, zap this string. - // Otherwise, restore it. - if (!strcmp(name, envp[index])) - *envp[index] = '\0'; - else - *p = '='; - } - - return; -} - -/// GenerateBitcode - generates a bitcode file from the module provided -void GenerateBitcode(Module* M, const std::string& FileName) { - - if (Verbose) - errs() << "Generating Bitcode To " << FileName << '\n'; - - // Create the output file. - std::string ErrorInfo; - tool_output_file Out(FileName.c_str(), ErrorInfo, - raw_fd_ostream::F_Binary); - if (!ErrorInfo.empty()) { - PrintAndExit(ErrorInfo, M); - return; - } - - // Write it out - WriteBitcodeToFile(M, Out.os()); - Out.keep(); -} - -/// GenerateAssembly - generates a native assembly language source file from the -/// specified bitcode file. -/// -/// Inputs: -/// InputFilename - The name of the input bitcode file. -/// OutputFilename - The name of the file to generate. -/// llc - The pathname to use for LLC. -/// envp - The environment to use when running LLC. -/// -/// Return non-zero value on error. -/// -static int GenerateAssembly(const std::string &OutputFilename, - const std::string &InputFilename, - const sys::Path &llc, - std::string &ErrMsg ) { - // Run LLC to convert the bitcode file into assembly code. - std::vector<const char*> args; - args.push_back(llc.c_str()); - // We will use GCC to assemble the program so set the assembly syntax to AT&T, - // regardless of what the target in the bitcode file is. - args.push_back("-x86-asm-syntax=att"); - args.push_back("-o"); - args.push_back(OutputFilename.c_str()); - args.push_back(InputFilename.c_str()); - args.push_back(0); - - if (Verbose) { - errs() << "Generating Assembly With: \n"; - PrintCommand(args); - } - - return sys::Program::ExecuteAndWait(llc, &args[0], 0, 0, 0, 0, &ErrMsg); -} - -/// GenerateCFile - generates a C source file from the specified bitcode file. -static int GenerateCFile(const std::string &OutputFile, - const std::string &InputFile, - const sys::Path &llc, - std::string& ErrMsg) { - // Run LLC to convert the bitcode file into C. - std::vector<const char*> args; - args.push_back(llc.c_str()); - args.push_back("-march=c"); - args.push_back("-o"); - args.push_back(OutputFile.c_str()); - args.push_back(InputFile.c_str()); - args.push_back(0); - - if (Verbose) { - errs() << "Generating C Source With: \n"; - PrintCommand(args); - } - - return sys::Program::ExecuteAndWait(llc, &args[0], 0, 0, 0, 0, &ErrMsg); -} - -/// GenerateNative - generates a native object file from the -/// specified bitcode file. -/// -/// Inputs: -/// InputFilename - The name of the input bitcode file. -/// OutputFilename - The name of the file to generate. -/// NativeLinkItems - The native libraries, files, code with which to link -/// LibPaths - The list of directories in which to find libraries. -/// FrameworksPaths - The list of directories in which to find frameworks. -/// Frameworks - The list of frameworks (dynamic libraries) -/// gcc - The pathname to use for GGC. -/// envp - A copy of the process's current environment. -/// -/// Outputs: -/// None. -/// -/// Returns non-zero value on error. -/// -static int GenerateNative(const std::string &OutputFilename, - const std::string &InputFilename, - const Linker::ItemList &LinkItems, - const sys::Path &gcc, char ** const envp, - std::string& ErrMsg) { - // Remove these environment variables from the environment of the - // programs that we will execute. It appears that GCC sets these - // environment variables so that the programs it uses can configure - // themselves identically. - // - // However, when we invoke GCC below, we want it to use its normal - // configuration. Hence, we must sanitize its environment. - char ** clean_env = CopyEnv(envp); - if (clean_env == NULL) - return 1; - RemoveEnv("LIBRARY_PATH", clean_env); - RemoveEnv("COLLECT_GCC_OPTIONS", clean_env); - RemoveEnv("GCC_EXEC_PREFIX", clean_env); - RemoveEnv("COMPILER_PATH", clean_env); - RemoveEnv("COLLECT_GCC", clean_env); - - - // Run GCC to assemble and link the program into native code. - // - // Note: - // We can't just assemble and link the file with the system assembler - // and linker because we don't know where to put the _start symbol. - // GCC mysteriously knows how to do it. - std::vector<std::string> args; - args.push_back(gcc.c_str()); - args.push_back("-fno-strict-aliasing"); - args.push_back("-O3"); - args.push_back("-o"); - args.push_back(OutputFilename); - args.push_back(InputFilename); - - // Add in the library and framework paths - for (unsigned index = 0; index < LibPaths.size(); index++) { - args.push_back("-L" + LibPaths[index]); - } - for (unsigned index = 0; index < FrameworkPaths.size(); index++) { - args.push_back("-F" + FrameworkPaths[index]); - } - - // Add the requested options - for (unsigned index = 0; index < XLinker.size(); index++) - args.push_back(XLinker[index]); - - // Add in the libraries to link. - for (unsigned index = 0; index < LinkItems.size(); index++) - if (LinkItems[index].first != "crtend") { - if (LinkItems[index].second) - args.push_back("-l" + LinkItems[index].first); - else - args.push_back(LinkItems[index].first); - } - - // Add in frameworks to link. - for (unsigned index = 0; index < Frameworks.size(); index++) { - args.push_back("-framework"); - args.push_back(Frameworks[index]); - } - - // Now that "args" owns all the std::strings for the arguments, call the c_str - // method to get the underlying string array. We do this game so that the - // std::string array is guaranteed to outlive the const char* array. - std::vector<const char *> Args; - for (unsigned i = 0, e = args.size(); i != e; ++i) - Args.push_back(args[i].c_str()); - Args.push_back(0); - - if (Verbose) { - errs() << "Generating Native Executable With:\n"; - PrintCommand(Args); - } - - // Run the compiler to assembly and link together the program. - int R = sys::Program::ExecuteAndWait( - gcc, &Args[0], const_cast<const char **>(clean_env), 0, 0, 0, &ErrMsg); - delete [] clean_env; - return R; -} - -/// EmitShellScript - Output the wrapper file that invokes the JIT on the LLVM -/// bitcode file for the program. -static void EmitShellScript(char **argv, Module *M) { - if (Verbose) - errs() << "Emitting Shell Script\n"; -#if defined(_WIN32) - // Windows doesn't support #!/bin/sh style shell scripts in .exe files. To - // support windows systems, we copy the llvm-stub.exe executable from the - // build tree to the destination file. - std::string ErrMsg; - sys::Path llvmstub = PrependMainExecutablePath("llvm-stub", argv[0], - (void *)(intptr_t)&Optimize); - if (llvmstub.isEmpty()) - PrintAndExit("Could not find llvm-stub.exe executable!", M); - - if (0 != sys::CopyFile(sys::Path(OutputFilename), llvmstub, &ErrMsg)) - PrintAndExit(ErrMsg, M); - - return; -#else - - // Output the script to start the program... - std::string ErrorInfo; - tool_output_file Out2(OutputFilename.c_str(), ErrorInfo); - if (!ErrorInfo.empty()) - PrintAndExit(ErrorInfo, M); - - Out2.os() << "#!/bin/sh\n"; - // Allow user to setenv LLVMINTERP if lli is not in their PATH. - Out2.os() << "lli=${LLVMINTERP-lli}\n"; - Out2.os() << "exec $lli \\\n"; - // gcc accepts -l<lib> and implicitly searches /lib and /usr/lib. - LibPaths.push_back("/lib"); - LibPaths.push_back("/usr/lib"); - LibPaths.push_back("/usr/X11R6/lib"); - // We don't need to link in libc! In fact, /usr/lib/libc.so may not be a - // shared object at all! See RH 8: plain text. - std::vector<std::string>::iterator libc = - std::find(Libraries.begin(), Libraries.end(), "c"); - if (libc != Libraries.end()) Libraries.erase(libc); - // List all the shared object (native) libraries this executable will need - // on the command line, so that we don't have to do this manually! - for (std::vector<std::string>::iterator i = Libraries.begin(), - e = Libraries.end(); i != e; ++i) { - // try explicit -L arguments first: - sys::Path FullLibraryPath; - for (cl::list<std::string>::const_iterator P = LibPaths.begin(), - E = LibPaths.end(); P != E; ++P) { - FullLibraryPath = *P; - FullLibraryPath.appendComponent("lib" + *i); - FullLibraryPath.appendSuffix(sys::Path::GetDLLSuffix()); - if (!FullLibraryPath.isEmpty()) { - if (!FullLibraryPath.isDynamicLibrary()) { - // Not a native shared library; mark as invalid - FullLibraryPath = sys::Path(); - } else break; - } - } - if (FullLibraryPath.isEmpty()) - FullLibraryPath = sys::Path::FindLibrary(*i); - if (!FullLibraryPath.isEmpty()) - Out2.os() << " -load=" << FullLibraryPath.str() << " \\\n"; - } - Out2.os() << " " << BitcodeOutputFilename << " ${1+\"$@\"}\n"; - Out2.keep(); -#endif -} - -// BuildLinkItems -- This function generates a LinkItemList for the LinkItems -// linker function by combining the Files and Libraries in the order they were -// declared on the command line. -static void BuildLinkItems( - Linker::ItemList& Items, - const cl::list<std::string>& Files, - const cl::list<std::string>& Libraries) { - - // Build the list of linkage items for LinkItems. - - cl::list<std::string>::const_iterator fileIt = Files.begin(); - cl::list<std::string>::const_iterator libIt = Libraries.begin(); - - int libPos = -1, filePos = -1; - while ( libIt != Libraries.end() || fileIt != Files.end() ) { - if (libIt != Libraries.end()) - libPos = Libraries.getPosition(libIt - Libraries.begin()); - else - libPos = -1; - if (fileIt != Files.end()) - filePos = Files.getPosition(fileIt - Files.begin()); - else - filePos = -1; - - if (filePos != -1 && (libPos == -1 || filePos < libPos)) { - // Add a source file - Items.push_back(std::make_pair(*fileIt++, false)); - } else if (libPos != -1 && (filePos == -1 || libPos < filePos)) { - // Add a library - Items.push_back(std::make_pair(*libIt++, true)); - } - } -} - -int main(int argc, char **argv, char **envp) { - // Print a stack trace if we signal out. - sys::PrintStackTraceOnErrorSignal(); - PrettyStackTraceProgram X(argc, argv); - - LLVMContext &Context = getGlobalContext(); - llvm_shutdown_obj Y; // Call llvm_shutdown() on exit. - - // Initialize passes - PassRegistry &Registry = *PassRegistry::getPassRegistry(); - initializeCore(Registry); - initializeScalarOpts(Registry); - initializeIPO(Registry); - initializeAnalysis(Registry); - initializeIPA(Registry); - initializeTransformUtils(Registry); - initializeInstCombine(Registry); - initializeTarget(Registry); - - // Initial global variable above for convenience printing of program name. - progname = sys::path::stem(argv[0]); - - // Parse the command line options - cl::ParseCommandLineOptions(argc, argv, "llvm linker\n"); - -#if defined(_WIN32) || defined(__CYGWIN__) - if (!LinkAsLibrary) { - // Default to "a.exe" instead of "a.out". - if (OutputFilename.getNumOccurrences() == 0) - OutputFilename = "a.exe"; - - // If there is no suffix add an "exe" one. - if (sys::path::extension(OutputFilename).empty()) - OutputFilename.append(".exe"); - } -#endif - - // Generate the bitcode for the optimized module. - // If -b wasn't specified, use the name specified - // with -o to construct BitcodeOutputFilename. - if (BitcodeOutputFilename.empty()) { - BitcodeOutputFilename = OutputFilename; - if (!LinkAsLibrary) BitcodeOutputFilename += ".bc"; - } - - // Arrange for the bitcode output file to be deleted on any errors. - BitcodeOutputRemover.setFile(BitcodeOutputFilename); - sys::RemoveFileOnSignal(sys::Path(BitcodeOutputFilename)); - - // Arrange for the output file to be deleted on any errors. - if (!LinkAsLibrary) { - OutputRemover.setFile(OutputFilename); - sys::RemoveFileOnSignal(sys::Path(OutputFilename)); - } - - // Construct a Linker (now that Verbose is set) - Linker TheLinker(progname, OutputFilename, Context, Verbose); - - // Keep track of the native link items (versus the bitcode items) - Linker::ItemList NativeLinkItems; - - // Add library paths to the linker - TheLinker.addPaths(LibPaths); - TheLinker.addSystemPaths(); - - // Remove any consecutive duplicates of the same library... - Libraries.erase(std::unique(Libraries.begin(), Libraries.end()), - Libraries.end()); - - if (LinkAsLibrary) { - std::vector<sys::Path> Files; - for (unsigned i = 0; i < InputFilenames.size(); ++i ) - Files.push_back(sys::Path(InputFilenames[i])); - if (TheLinker.LinkInFiles(Files)) - return 1; // Error already printed - - // The libraries aren't linked in but are noted as "dependent" in the - // module. - for (cl::list<std::string>::const_iterator I = Libraries.begin(), - E = Libraries.end(); I != E ; ++I) { - TheLinker.getModule()->addLibrary(*I); - } - } else { - // Build a list of the items from our command line - Linker::ItemList Items; - BuildLinkItems(Items, InputFilenames, Libraries); - - // Link all the items together - if (TheLinker.LinkInItems(Items, NativeLinkItems) ) - return 1; // Error already printed - } - - std::auto_ptr<Module> Composite(TheLinker.releaseModule()); - - // Optimize the module - Optimize(Composite.get()); - - // Generate the bitcode output. - GenerateBitcode(Composite.get(), BitcodeOutputFilename); - - // If we are not linking a library, generate either a native executable - // or a JIT shell script, depending upon what the user wants. - if (!LinkAsLibrary) { - // If the user wants to run a post-link optimization, run it now. - if (!PostLinkOpts.empty()) { - std::vector<std::string> opts = PostLinkOpts; - for (std::vector<std::string>::iterator I = opts.begin(), - E = opts.end(); I != E; ++I) { - sys::Path prog(*I); - if (!prog.canExecute()) { - prog = sys::Program::FindProgramByName(*I); - if (prog.isEmpty()) - PrintAndExit(std::string("Optimization program '") + *I + - "' is not found or not executable.", Composite.get()); - } - // Get the program arguments - sys::Path tmp_output("opt_result"); - std::string ErrMsg; - if (tmp_output.createTemporaryFileOnDisk(true, &ErrMsg)) - PrintAndExit(ErrMsg, Composite.get()); - - const char* args[4]; - args[0] = I->c_str(); - args[1] = BitcodeOutputFilename.c_str(); - args[2] = tmp_output.c_str(); - args[3] = 0; - if (0 == sys::Program::ExecuteAndWait(prog, args, 0,0,0,0, &ErrMsg)) { - if (tmp_output.isBitcodeFile()) { - sys::Path target(BitcodeOutputFilename); - target.eraseFromDisk(); - if (tmp_output.renamePathOnDisk(target, &ErrMsg)) - PrintAndExit(ErrMsg, Composite.get(), 2); - } else - PrintAndExit("Post-link optimization output is not bitcode", - Composite.get()); - } else { - PrintAndExit(ErrMsg, Composite.get()); - } - } - } - - // If the user wants to generate a native executable, compile it from the - // bitcode file. - // - // Otherwise, create a script that will run the bitcode through the JIT. - if (Native) { - // Name of the Assembly Language output file - sys::Path AssemblyFile ( OutputFilename); - AssemblyFile.appendSuffix("s"); - - // Mark the output files for removal. - FileRemover AssemblyFileRemover(AssemblyFile.str()); - sys::RemoveFileOnSignal(AssemblyFile); - - // Determine the locations of the llc and gcc programs. - sys::Path llc = PrependMainExecutablePath("llc", argv[0], - (void *)(intptr_t)&Optimize); - if (llc.isEmpty()) - PrintAndExit("Failed to find llc", Composite.get()); - - sys::Path gcc = sys::Program::FindProgramByName("gcc"); - if (gcc.isEmpty()) - PrintAndExit("Failed to find gcc", Composite.get()); - - // Generate an assembly language file for the bitcode. - std::string ErrMsg; - if (0 != GenerateAssembly(AssemblyFile.str(), BitcodeOutputFilename, - llc, ErrMsg)) - PrintAndExit(ErrMsg, Composite.get()); - - if (0 != GenerateNative(OutputFilename, AssemblyFile.str(), - NativeLinkItems, gcc, envp, ErrMsg)) - PrintAndExit(ErrMsg, Composite.get()); - } else if (NativeCBE) { - sys::Path CFile (OutputFilename); - CFile.appendSuffix("cbe.c"); - - // Mark the output files for removal. - FileRemover CFileRemover(CFile.str()); - sys::RemoveFileOnSignal(CFile); - - // Determine the locations of the llc and gcc programs. - sys::Path llc = PrependMainExecutablePath("llc", argv[0], - (void *)(intptr_t)&Optimize); - if (llc.isEmpty()) - PrintAndExit("Failed to find llc", Composite.get()); - - sys::Path gcc = sys::Program::FindProgramByName("gcc"); - if (gcc.isEmpty()) - PrintAndExit("Failed to find gcc", Composite.get()); - - // Generate an assembly language file for the bitcode. - std::string ErrMsg; - if (GenerateCFile(CFile.str(), BitcodeOutputFilename, llc, ErrMsg)) - PrintAndExit(ErrMsg, Composite.get()); - - if (GenerateNative(OutputFilename, CFile.str(), - NativeLinkItems, gcc, envp, ErrMsg)) - PrintAndExit(ErrMsg, Composite.get()); - } else { - EmitShellScript(argv, Composite.get()); - } - - // Make the script executable... - std::string ErrMsg; - if (sys::Path(OutputFilename).makeExecutableOnDisk(&ErrMsg)) - PrintAndExit(ErrMsg, Composite.get()); - - // Make the bitcode file readable and directly executable in LLEE as well - if (sys::Path(BitcodeOutputFilename).makeExecutableOnDisk(&ErrMsg)) - PrintAndExit(ErrMsg, Composite.get()); - - if (sys::Path(BitcodeOutputFilename).makeReadableOnDisk(&ErrMsg)) - PrintAndExit(ErrMsg, Composite.get()); - } - - // Operations which may fail are now complete. - BitcodeOutputRemover.releaseFile(); - if (!LinkAsLibrary) - OutputRemover.releaseFile(); - - // Graceful exit - return 0; -} |