//===- llvm-ld.cpp - LLVM 'ld' compatible linker --------------------------===//
-//
+//
// 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 is intended to be compatible with GCC, and follows standard
//
//===----------------------------------------------------------------------===//
+#include "llvm/LinkAllVMCore.h"
#include "llvm/Linker.h"
#include "llvm/System/Program.h"
#include "llvm/Module.h"
#include "llvm/Target/TargetMachineRegistry.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/FileUtilities.h"
+#include "llvm/Support/Streams.h"
#include "llvm/Support/SystemUtils.h"
#include "llvm/System/Signals.h"
#include <fstream>
-#include <iostream>
#include <memory>
-
using namespace llvm;
// Input/Output Options
cl::desc("<input bytecode files>"));
static cl::opt<std::string> OutputFilename("o", cl::init("a.out"),
- cl::desc("Override output filename"),
+ cl::desc("Override output filename"),
cl::value_desc("filename"));
-static cl::opt<bool> Verbose("v",
+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::desc("Specify a library search path"),
cl::value_desc("directory"));
static cl::list<std::string> Libraries("l", cl::Prefix,
- cl::desc("Specify libraries to link to"),
+ cl::desc("Specify libraries to link to"),
cl::value_desc("library prefix"));
-static cl::opt<bool> LinkAsLibrary("link-as-library",
+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),
static cl::opt<bool>DisableCompression("disable-compression",cl::init(false),
cl::desc("Disable writing of compressed bytecode files"));
-
+
+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 are ignored but supported by LD
-static cl::opt<std::string> CO3("soname", cl::Hidden,
+static cl::opt<std::string> CO3("soname", cl::Hidden,
cl::desc("Compatibility option: ignored"));
-static cl::opt<std::string> CO4("version-script", cl::Hidden,
+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,
+static cl::opt<bool> CO5("eh-frame-hdr", cl::Hidden,
cl::desc("Compatibility option: ignored"));
-static cl::opt<std::string> CO6("h", cl::Hidden,
+static cl::opt<std::string> CO6("h", 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;
/// Message - The message to print to standard error.
///
static int PrintAndReturn(const std::string &Message) {
- std::cerr << progname << ": " << Message << "\n";
+ llvm_cerr << progname << ": " << Message << "\n";
return 1;
}
void GenerateBytecode(Module* M, const std::string& FileName) {
// Create the output file.
- std::ofstream Out(FileName.c_str());
+ std::ios::openmode io_mode = std::ios::out | std::ios::trunc |
+ std::ios::binary;
+ std::ofstream Out(FileName.c_str(), io_mode);
if (!Out.good()) {
PrintAndReturn("error opening '" + FileName + "' for writing!");
return;
sys::RemoveFileOnSignal(sys::Path(FileName));
// Write it out
- WriteBytecodeToFile(M, Out, !DisableCompression);
+ llvm_ostream L(Out);
+ WriteBytecodeToFile(M, L, !DisableCompression);
// Close the bytecode file.
Out.close();
/// specified bytecode file.
///
/// Inputs:
-/// InputFilename - The name of the output bytecode file.
+/// InputFilename - The name of the input bytecode file.
/// OutputFilename - The name of the file to generate.
/// llc - The pathname to use for LLC.
/// envp - The environment to use when running LLC.
///
static int GenerateAssembly(const std::string &OutputFilename,
const std::string &InputFilename,
- const sys::Path &llc) {
+ const sys::Path &llc,
+ std::string &ErrMsg ) {
// Run LLC to convert the bytecode file into assembly code.
std::vector<const char*> args;
- args.push_back( "-f");
- args.push_back( "-o");
- args.push_back( OutputFilename.c_str() );
- args.push_back( InputFilename.c_str() );
+ args.push_back(llc.c_str());
+ args.push_back("-f");
+ args.push_back("-o");
+ args.push_back(OutputFilename.c_str());
+ args.push_back(InputFilename.c_str());
+ args.push_back(0);
- return sys::Program::ExecuteAndWait(llc,&args[0]);
+ return sys::Program::ExecuteAndWait(llc,&args[0],0,0,0,&ErrMsg);
}
-/// GenerateAssembly - generates a native assembly language source file from the
-/// specified bytecode file.
+/// GenerateCFile - generates a C source file from the specified bytecode file.
static int GenerateCFile(const std::string &OutputFile,
const std::string &InputFile,
- const sys::Path &llc) {
+ const sys::Path &llc,
+ std::string& ErrMsg) {
// Run LLC to convert the bytecode file into C.
std::vector<const char*> args;
- args.push_back( "-march=c");
- args.push_back( "-f");
- args.push_back( "-o");
- args.push_back( OutputFile.c_str() );
- args.push_back( InputFile.c_str() );
- return sys::Program::ExecuteAndWait(llc, &args[0]);
+ args.push_back(llc.c_str());
+ args.push_back("-march=c");
+ args.push_back("-f");
+ args.push_back("-o");
+ args.push_back(OutputFile.c_str());
+ args.push_back(InputFile.c_str());
+ args.push_back(0);
+ return sys::Program::ExecuteAndWait(llc, &args[0],0,0,0,&ErrMsg);
}
-/// GenerateNative - generates a native assembly language source file from the
-/// specified assembly source file.
+/// GenerateNative - generates a native object file from the
+/// specified bytecode file.
///
/// Inputs:
-/// InputFilename - The name of the output bytecode file.
+/// InputFilename - The name of the input bytecode file.
/// OutputFilename - The name of the file to generate.
-/// Libraries - The list of libraries with which to link.
+/// LinkItems - The native libraries, files, code with which to link
/// LibPaths - The list of directories in which to find libraries.
/// gcc - The pathname to use for GGC.
/// envp - A copy of the process's current environment.
///
static int GenerateNative(const std::string &OutputFilename,
const std::string &InputFilename,
- const std::vector<std::string> &Libraries,
- const sys::Path &gcc, char ** const envp) {
+ 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
// and linker because we don't know where to put the _start symbol.
// GCC mysteriously knows how to do it.
std::vector<const char*> 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.c_str());
args.push_back(InputFilename.c_str());
+ // Add in the library paths
+ for (unsigned index = 0; index < LibPaths.size(); index++) {
+ args.push_back("-L");
+ args.push_back(LibPaths[index].c_str());
+ }
+
+ // Add the requested options
+ for (unsigned index = 0; index < XLinker.size(); index++) {
+ args.push_back(XLinker[index].c_str());
+ args.push_back(Libraries[index].c_str());
+ }
+
// Add in the libraries to link.
- for (unsigned index = 0; index < Libraries.size(); index++)
- if (Libraries[index] != "crtend") {
- args.push_back("-l");
- args.push_back(Libraries[index].c_str());
+ for (unsigned index = 0; index < LinkItems.size(); index++)
+ if (LinkItems[index].first != "crtend") {
+ if (LinkItems[index].second) {
+ std::string lib_name = "-l" + LinkItems[index].first;
+ args.push_back(lib_name.c_str());
+ } else
+ args.push_back(LinkItems[index].first.c_str());
}
+ args.push_back(0);
+
// Run the compiler to assembly and link together the program.
- return sys::Program::ExecuteAndWait(gcc, &args[0], (const char**)clean_env);
+ int R = sys::Program::ExecuteAndWait(
+ gcc, &args[0], (const char**)clean_env,0,0,&ErrMsg);
+ delete [] clean_env;
+ return R;
}
/// EmitShellScript - Output the wrapper file that invokes the JIT on the LLVM
// 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 llvmstub = FindExecutable("llvm-stub.exe", argv[0]);
- if (llvmstub.empty()) {
- std::cerr << "Could not find llvm-stub.exe executable!\n";
+ std::string ErrMsg;
+ sys::Path llvmstub = FindExecutable("llvm-stub.exe", argv[0]);
+ if (llvmstub.isEmpty()) {
+ llvm_cerr << "Could not find llvm-stub.exe executable!\n";
exit(1);
}
- sys::CopyFile(sys::Path(OutputFilename), sys::Path(llvmstub));
+
+ if (0 != sys::CopyFile(sys::Path(OutputFilename), llvmstub, &ErrMsg)) {
+ llvm_cerr << argv[0] << ": " << ErrMsg << "\n";
+ exit(1);
+ }
+
return;
#endif
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::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(),
+ for (std::vector<std::string>::iterator i = Libraries.begin(),
e = Libraries.end(); i != e; ++i) {
sys::Path FullLibraryPath = sys::Path::FindLibrary(*i);
if (!FullLibraryPath.isEmpty() && FullLibraryPath.isDynamicLibrary())
const cl::list<std::string>& Files,
const cl::list<std::string>& Libraries) {
- // Build the list of linkage items for LinkItems.
+ // 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 main(int argc, char **argv, char **envp) {
- // Initial global variable above for convenience printing of program name.
- progname = sys::Path(argv[0]).getBasename();
- Linker TheLinker(progname, Verbose);
-
- // Set up the library paths for the Linker
- TheLinker.addPaths(LibPaths);
- TheLinker.addSystemPaths();
-
- // Parse the command line options
- cl::ParseCommandLineOptions(argc, argv, " llvm linker\n");
- sys::PrintStackTraceOnErrorSignal();
-
- // 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) )
- return 1;
- }
+ try {
+ // Initial global variable above for convenience printing of program name.
+ progname = sys::Path(argv[0]).getBasename();
+
+ // Parse the command line options
+ cl::ParseCommandLineOptions(argc, argv, " llvm linker\n");
+ sys::PrintStackTraceOnErrorSignal();
+
+ // Construct a Linker (now that Verbose is set)
+ Linker TheLinker(progname, OutputFilename, Verbose);
+ // Keep track of the native link items (vice the bytecode items)
+ Linker::ItemList LinkItems;
+
+ // 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);
- std::auto_ptr<Module> Composite(TheLinker.releaseModule());
-
- // Optimize the module
- Optimize(Composite.get());
-
- // Generate the bytecode for the optimized module.
- std::string RealBytecodeOutput = OutputFilename;
- if (!LinkAsLibrary) RealBytecodeOutput += ".bc";
- GenerateBytecode(Composite.get(), RealBytecodeOutput);
-
- // 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 generate a native executable, compile it from the
- // bytecode file.
- //
- // Otherwise, create a script that will run the bytecode 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 if we get an interrupt.
- sys::RemoveFileOnSignal(AssemblyFile);
- sys::RemoveFileOnSignal(sys::Path(OutputFilename));
-
- // Determine the locations of the llc and gcc programs.
- sys::Path llc = FindExecutable("llc", argv[0]);
- if (llc.isEmpty())
- return PrintAndReturn("Failed to find llc");
-
- sys::Path gcc = FindExecutable("gcc", argv[0]);
- if (gcc.isEmpty())
- return PrintAndReturn("Failed to find gcc");
-
- // Generate an assembly language file for the bytecode.
- if (Verbose) std::cout << "Generating Assembly Code\n";
- GenerateAssembly(AssemblyFile.toString(), RealBytecodeOutput, llc);
- if (Verbose) std::cout << "Generating Native Code\n";
- GenerateNative(OutputFilename, AssemblyFile.toString(), Libraries,
- gcc, envp);
-
- // Remove the assembly language file.
- AssemblyFile.destroyFile();
- } else if (NativeCBE) {
- sys::Path CFile (OutputFilename);
- CFile.appendSuffix("cbe.c");
-
- // Mark the output files for removal if we get an interrupt.
- sys::RemoveFileOnSignal(CFile);
- sys::RemoveFileOnSignal(sys::Path(OutputFilename));
-
- // Determine the locations of the llc and gcc programs.
- sys::Path llc = FindExecutable("llc", argv[0]);
- if (llc.isEmpty())
- return PrintAndReturn("Failed to find llc");
-
- sys::Path gcc = FindExecutable("gcc", argv[0]);
- if (gcc.isEmpty())
- return PrintAndReturn("Failed to find gcc");
-
- // Generate an assembly language file for the bytecode.
- if (Verbose) std::cout << "Generating Assembly Code\n";
- GenerateCFile(CFile.toString(), RealBytecodeOutput, llc);
- if (Verbose) std::cout << "Generating Native Code\n";
- GenerateNative(OutputFilename, CFile.toString(), Libraries, gcc, envp);
-
- // Remove the assembly language file.
- CFile.destroyFile();
+ // Link all the items together
+ if (TheLinker.LinkInItems(Items,LinkItems) )
+ return 1;
+ }
- } else {
- EmitShellScript(argv);
+ std::auto_ptr<Module> Composite(TheLinker.releaseModule());
+
+ // Optimize the module
+ Optimize(Composite.get());
+
+ // Generate the bytecode for the optimized module.
+ std::string RealBytecodeOutput = OutputFilename;
+ if (!LinkAsLibrary) RealBytecodeOutput += ".bc";
+ GenerateBytecode(Composite.get(), RealBytecodeOutput);
+
+ // 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())
+ return PrintAndReturn(std::string("Optimization program '") + *I +
+ "' is not found or not executable.");
+ }
+ // Get the program arguments
+ sys::Path tmp_output("opt_result");
+ std::string ErrMsg;
+ if (tmp_output.createTemporaryFileOnDisk(true, &ErrMsg)) {
+ return PrintAndReturn(ErrMsg);
+ }
+ const char* args[4];
+ args[0] = I->c_str();
+ args[1] = RealBytecodeOutput.c_str();
+ args[2] = tmp_output.c_str();
+ args[3] = 0;
+ if (0 == sys::Program::ExecuteAndWait(prog, args, 0,0,0, &ErrMsg)) {
+ if (tmp_output.isBytecodeFile()) {
+ sys::Path target(RealBytecodeOutput);
+ target.eraseFromDisk();
+ if (tmp_output.renamePathOnDisk(target, &ErrMsg)) {
+ llvm_cerr << argv[0] << ": " << ErrMsg << "\n";
+ return 2;
+ }
+ } else
+ return PrintAndReturn(
+ "Post-link optimization output is not bytecode");
+ } else {
+ llvm_cerr << argv[0] << ": " << ErrMsg << "\n";
+ return 2;
+ }
+ }
+ }
+
+ // If the user wants to generate a native executable, compile it from the
+ // bytecode file.
+ //
+ // Otherwise, create a script that will run the bytecode 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 if we get an interrupt.
+ sys::RemoveFileOnSignal(AssemblyFile);
+ sys::RemoveFileOnSignal(sys::Path(OutputFilename));
+
+ // Determine the locations of the llc and gcc programs.
+ sys::Path llc = FindExecutable("llc", argv[0]);
+ if (llc.isEmpty())
+ return PrintAndReturn("Failed to find llc");
+
+ sys::Path gcc = FindExecutable("gcc", argv[0]);
+ if (gcc.isEmpty())
+ return PrintAndReturn("Failed to find gcc");
+
+ // Generate an assembly language file for the bytecode.
+ if (Verbose) llvm_cout << "Generating Assembly Code\n";
+ std::string ErrMsg;
+ if (0 != GenerateAssembly(AssemblyFile.toString(), RealBytecodeOutput,
+ llc, ErrMsg)) {
+ llvm_cerr << argv[0] << ": " << ErrMsg << "\n";
+ return 1;
+ }
+
+ if (Verbose) llvm_cout << "Generating Native Code\n";
+ if (0 != GenerateNative(OutputFilename, AssemblyFile.toString(),
+ LinkItems,gcc,envp,ErrMsg)) {
+ llvm_cerr << argv[0] << ": " << ErrMsg << "\n";
+ return 1;
+ }
+
+ // Remove the assembly language file.
+ AssemblyFile.eraseFromDisk();
+ } else if (NativeCBE) {
+ sys::Path CFile (OutputFilename);
+ CFile.appendSuffix("cbe.c");
+
+ // Mark the output files for removal if we get an interrupt.
+ sys::RemoveFileOnSignal(CFile);
+ sys::RemoveFileOnSignal(sys::Path(OutputFilename));
+
+ // Determine the locations of the llc and gcc programs.
+ sys::Path llc = FindExecutable("llc", argv[0]);
+ if (llc.isEmpty())
+ return PrintAndReturn("Failed to find llc");
+
+ sys::Path gcc = FindExecutable("gcc", argv[0]);
+ if (gcc.isEmpty())
+ return PrintAndReturn("Failed to find gcc");
+
+ // Generate an assembly language file for the bytecode.
+ if (Verbose) llvm_cout << "Generating Assembly Code\n";
+ std::string ErrMsg;
+ if (0 != GenerateCFile(
+ CFile.toString(), RealBytecodeOutput, llc, ErrMsg)) {
+ llvm_cerr << argv[0] << ": " << ErrMsg << "\n";
+ return 1;
+ }
+
+ if (Verbose) llvm_cout << "Generating Native Code\n";
+ if (0 != GenerateNative(OutputFilename, CFile.toString(), LinkItems,
+ gcc, envp, ErrMsg)) {
+ llvm_cerr << argv[0] << ": " << ErrMsg << "\n";
+ return 1;
+ }
+
+ // Remove the assembly language file.
+ CFile.eraseFromDisk();
+
+ } else {
+ EmitShellScript(argv);
+ }
+
+ // Make the script executable...
+ std::string ErrMsg;
+ if (sys::Path(OutputFilename).makeExecutableOnDisk(&ErrMsg)) {
+ llvm_cerr << argv[0] << ": " << ErrMsg << "\n";
+ return 1;
+ }
+
+ // Make the bytecode file readable and directly executable in LLEE as well
+ if (sys::Path(RealBytecodeOutput).makeExecutableOnDisk(&ErrMsg)) {
+ llvm_cerr << argv[0] << ": " << ErrMsg << "\n";
+ return 1;
+ }
+ if (sys::Path(RealBytecodeOutput).makeReadableOnDisk(&ErrMsg)) {
+ llvm_cerr << argv[0] << ": " << ErrMsg << "\n";
+ return 1;
+ }
}
-
- // Make the script executable...
- sys::Path(OutputFilename).makeExecutable();
- // Make the bytecode file readable and directly executable in LLEE as well
- sys::Path(RealBytecodeOutput).makeExecutable();
- sys::Path(RealBytecodeOutput).makeReadable();
+ return 0;
+ } catch (const std::string& msg) {
+ llvm_cerr << argv[0] << ": " << msg << "\n";
+ } catch (...) {
+ llvm_cerr << argv[0] << ": Unexpected unknown exception occurred.\n";
}
-
- return 0;
+ return 1;
}
projects / oota-llvm.git / blobdiff