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End of life for gccld. Remove its source code and enable the generation

Browse Source 
of a shell script to stand in its place. The shell script just pawns the
execution off to llvm-ld.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34090 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer 2007-02-09 15:21:02 +00:00
parent 8912cdd962
commit d748ea32db
4 changed files with 0 additions and 950 deletions
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461
tools/gccld/GenerateCode.cpp
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@ -1,461 +0,0 @@
//===- GenerateCode.cpp - Functions for generating executable files ------===//
//
// 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 file contains functions for generating executable files once linking
// has finished. This includes generating a shell script to run the JIT or
// a native executable derived from the bytecode.
//
//===----------------------------------------------------------------------===//
#include "gccld.h"
#include "llvm/System/Program.h"
#include "llvm/Module.h"
#include "llvm/PassManager.h"
#include "llvm/Analysis/LoadValueNumbering.h"
#include "llvm/Analysis/Passes.h"
#include "llvm/Analysis/Verifier.h"
#include "llvm/Bytecode/Archive.h"
#include "llvm/Bytecode/WriteBytecodePass.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Transforms/IPO.h"
#include "llvm/Transforms/Scalar.h"
#include "llvm/Support/SystemUtils.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Streams.h"
using namespace llvm;
namespace {
cl::opt<bool>
DisableInline("disable-inlining", cl::desc("Do not run the inliner pass"));
cl::opt<bool>
Verify("verify", cl::desc("Verify intermediate results of all passes"));
cl::opt<bool>
DisableOptimizations("disable-opt",
cl::desc("Do not run any optimization passes"));
cl::opt<bool>
NoCompress("disable-compression", cl::init(true),
cl::desc("Don't compress the generated bytecode"));
}
/// 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 = new char* [entries]) == NULL)
return NULL;
// Make a copy of the list. Don't forget the NULL that ends the list.
entries = 0;
while (envp[entries] != NULL) {
newenv[entries] = new char[strlen (envp[entries]) + 1];
strcpy (newenv[entries], envp[entries]);
++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 = '=';
}
}
static void dumpArgs(const char **args) {
cerr << *args++;
while (*args)
cerr << ' ' << *args++;
cerr << '\n' << std::flush;
}
static inline void addPass(PassManager &PM, Pass *P) {
// Add the pass to the pass manager...
PM.add(P);
// If we are verifying all of the intermediate steps, add the verifier...
if (Verify) PM.add(createVerifierPass());
}
static bool isBytecodeLibrary(const sys::Path &FullPath) {
// Check for a bytecode file
if (FullPath.isBytecodeFile()) return true;
// Check for a dynamic library file
if (FullPath.isDynamicLibrary()) return false;
// Check for a true bytecode archive file
if (FullPath.isArchive() ) {
std::string ErrorMessage;
Archive* ar = Archive::OpenAndLoadSymbols( FullPath, &ErrorMessage );
return ar->isBytecodeArchive();
}
return false;
}
static bool isBytecodeLPath(const std::string &LibPath) {
sys::Path LPath(LibPath);
// Make sure it exists and is a directory
sys::FileStatus Status;
if (LPath.getFileStatus(Status) || !Status.isDir)
return false;
// Grab the contents of the -L path
std::set<sys::Path> Files;
if (LPath.getDirectoryContents(Files, 0))
return false;
// Iterate over the contents one by one to determine
// if this -L path has any bytecode shared libraries
// or archives
std::set<sys::Path>::iterator File = Files.begin();
std::string dllsuffix = sys::Path::GetDLLSuffix();
for (; File != Files.end(); ++File) {
// Not a file?
if (File->getFileStatus(Status) || Status.isDir)
continue;
std::string path = File->toString();
// Check for an ending '.dll', '.so' or '.a' suffix as all
// other files are not of interest to us here
if (path.find(dllsuffix, path.size()-dllsuffix.size()) == std::string::npos
&& path.find(".a", path.size()-2) == std::string::npos)
continue;
// Finally, check to see if the file is a true bytecode file
if (isBytecodeLibrary(*File))
return true;
}
return false;
}
/// GenerateBytecode - generates a bytecode file from the specified module.
///
/// Inputs:
/// M - The module for which bytecode should be generated.
/// StripLevel - 2 if we should strip all symbols, 1 if we should strip
/// debug info.
/// Internalize - Flags whether all symbols should be marked internal.
/// Out - Pointer to file stream to which to write the output.
///
/// Returns non-zero value on error.
///
int llvm::GenerateBytecode(Module *M, int StripLevel, bool Internalize,
std::ostream *Out) {
// In addition to just linking the input from GCC, we also want to spiff it up
// a little bit. Do this now.
PassManager Passes;
if (Verify) Passes.add(createVerifierPass());
// Add an appropriate TargetData instance for this module...
addPass(Passes, new TargetData(M));
if (!DisableOptimizations) {
// Now that composite has been compiled, scan through the module, looking
// for a main function. If main is defined, mark all other functions
// internal.
addPass(Passes, createInternalizePass(Internalize));
// Propagate constants at call sites into the functions they call. This
// opens opportunities for globalopt (and inlining) by substituting function
// pointers passed as arguments to direct uses of functions.
addPass(Passes, createIPSCCPPass());
// Now that we internalized some globals, see if we can hack on them!
addPass(Passes, createGlobalOptimizerPass());
// Linking modules together can lead to duplicated global constants, only
// keep one copy of each constant...
addPass(Passes, createConstantMergePass());
// Remove unused arguments from functions...
addPass(Passes, createDeadArgEliminationPass());
// Reduce the code after globalopt and ipsccp. Both can open up significant
// simplification opportunities, and both can propagate functions through
// function pointers. When this happens, we often have to resolve varargs
// calls, etc, so let instcombine do this.
addPass(Passes, createInstructionCombiningPass());
if (!DisableInline)
addPass(Passes, createFunctionInliningPass()); // Inline small functions
addPass(Passes, createPruneEHPass()); // Remove dead EH info
addPass(Passes, createGlobalOptimizerPass()); // Optimize globals again.
addPass(Passes, createGlobalDCEPass()); // Remove dead functions
// If we didn't decide to inline a function, check to see if we can
// transform it to pass arguments by value instead of by reference.
addPass(Passes, createArgumentPromotionPass());
// The IPO passes may leave cruft around. Clean up after them.
addPass(Passes, createInstructionCombiningPass());
addPass(Passes, createScalarReplAggregatesPass()); // Break up allocas
// Run a few AA driven optimizations here and now, to cleanup the code.
addPass(Passes, createGlobalsModRefPass()); // IP alias analysis
addPass(Passes, createLICMPass()); // Hoist loop invariants
addPass(Passes, createLoadValueNumberingPass()); // GVN for load instrs
addPass(Passes, createGCSEPass()); // Remove common subexprs
addPass(Passes, createDeadStoreEliminationPass()); // Nuke dead stores
// Cleanup and simplify the code after the scalar optimizations.
addPass(Passes, createInstructionCombiningPass());
// Delete basic blocks, which optimization passes may have killed...
addPass(Passes, createCFGSimplificationPass());
// Now that we have optimized the program, discard unreachable functions...
addPass(Passes, createGlobalDCEPass());
}
// If the -s or -S command line options were specified, strip the symbols out
// of the resulting program to make it smaller. -s and -S are GLD options
// that we are supporting.
if (StripLevel)
addPass(Passes, createStripSymbolsPass(StripLevel == 1));
// Make sure everything is still good.
Passes.add(createVerifierPass());
// Add the pass that writes bytecode to the output file...
OStream L(*Out);
addPass(Passes, new WriteBytecodePass(&L, false, !NoCompress));
// Run our queue of passes all at once now, efficiently.
Passes.run(*M);
return 0;
}
/// GenerateAssembly - generates a native assembly language source file from the
/// specified bytecode file.
///
/// Inputs:
/// InputFilename - The name of the output bytecode file.
/// OutputFilename - The name of the file to generate.
/// llc - The pathname to use for LLC.
///
/// Return non-zero value on error.
///
int llvm::GenerateAssembly(const std::string &OutputFilename,
const std::string &InputFilename,
const sys::Path &llc,
std::string& ErrMsg,
bool Verbose) {
// Run LLC to convert the bytecode file into assembly code.
std::vector<const char*> args;
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);
if (Verbose) dumpArgs(&args[0]);
return sys::Program::ExecuteAndWait(llc, &args[0],0,0,0,&ErrMsg);
}
/// GenerateCFile - generates a C source file from the specified bytecode file.
int llvm::GenerateCFile(const std::string &OutputFile,
const std::string &InputFile,
const sys::Path &llc,
std::string& ErrMsg,
bool Verbose) {
// Run LLC to convert the bytecode file into C.
std::vector<const char*> args;
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);
if (Verbose) dumpArgs(&args[0]);
return sys::Program::ExecuteAndWait(llc, &args[0],0,0,0,&ErrMsg);
}
/// GenerateNative - generates a native executable file from the specified
/// assembly source file.
///
/// Inputs:
/// InputFilename - The name of the output bytecode file.
/// OutputFilename - The name of the file to generate.
/// Libraries - The list of libraries with which to link.
/// gcc - The pathname to use for GGC.
/// envp - A copy of the process's current environment.
///
/// Outputs:
/// None.
///
/// Returns non-zero value on error.
///
int llvm::GenerateNative(const std::string &OutputFilename,
const std::string &InputFilename,
const std::vector<std::string> &LibPaths,
const std::vector<std::string> &Libraries,
const sys::Path &gcc, char ** const envp,
bool Shared,
bool ExportAllAsDynamic,
const std::vector<std::string> &RPaths,
const std::string &SOName,
std::string& ErrMsg,
bool Verbose) {
// 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<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());
// StringsToDelete - We don't want to call c_str() on temporary strings.
// If we need a temporary string, copy it here so that the memory is not
// reclaimed until after the exec call. All of these strings are allocated
// with strdup.
std::vector<char*> StringsToDelete;
if (Shared) args.push_back("-shared");
if (ExportAllAsDynamic) args.push_back("-export-dynamic");
if (!RPaths.empty()) {
for (std::vector<std::string>::const_iterator I = RPaths.begin(),
E = RPaths.end(); I != E; I++) {
std::string rp = "-Wl,-rpath," + *I;
StringsToDelete.push_back(strdup(rp.c_str()));
args.push_back(StringsToDelete.back());
}
}
if (!SOName.empty()) {
std::string so = "-Wl,-soname," + SOName;
StringsToDelete.push_back(strdup(so.c_str()));
args.push_back(StringsToDelete.back());
}
// Add in the libpaths to find the libraries.
//
// Note:
// When gccld is called from the llvm-gxx frontends, the -L paths for
// the LLVM cfrontend install paths are appended. We don't want the
// native linker to use these -L paths as they contain bytecode files.
// Further, we don't want any -L paths that contain bytecode shared
// libraries or true bytecode archive files. We omit them in all such
// cases.
for (unsigned index = 0; index < LibPaths.size(); index++)
if (!isBytecodeLPath(LibPaths[index])) {
std::string Tmp = "-L"+LibPaths[index];
StringsToDelete.push_back(strdup(Tmp.c_str()));
args.push_back(StringsToDelete.back());
}
// Add in the libraries to link.
for (unsigned index = 0; index < Libraries.size(); index++)
// HACK: If this is libg, discard it. This gets added by the compiler
// driver when doing: 'llvm-gcc main.c -Wl,-native -o a.out -g'. Note that
// this should really be fixed by changing the llvm-gcc compiler driver.
if (Libraries[index] != "crtend" && Libraries[index] != "g") {
std::string Tmp = "-l"+Libraries[index];
StringsToDelete.push_back(strdup(Tmp.c_str()));
args.push_back(StringsToDelete.back());
}
args.push_back(0); // Null terminate.
// Run the compiler to assembly and link together the program.
if (Verbose) dumpArgs(&args[0]);
int Res = sys::Program::ExecuteAndWait(
gcc, &args[0],(const char**)clean_env,0,0,&ErrMsg);
delete [] clean_env;
while (!StringsToDelete.empty()) {
free(StringsToDelete.back());
StringsToDelete.pop_back();
}
return Res;
}

6
tools/gccld/Makefile
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@ -9,13 +9,8 @@
LEVEL = ../..
TOOLNAME = gccld
LINK_COMPONENTS = bcreader bcwriter ipo scalaropts ipa linker
REQUIRES_EH := 1
include $(LEVEL)/Makefile.common
ifdef DONT_USE_THIS
install-local:: $(PROJ_bindir)/gccld
$(PROJ_bindir)/gccld : gccld.sh Makefile
@ -32,4 +27,3 @@ $(ToolDir)/gccld : gccld.sh Makefile
clean-local::
$(Verb)$(RM) -f $(ToolDir)/gccld
endif

427
tools/gccld/gccld.cpp
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@ -1,427 +0,0 @@
//===- gccld.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
// 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 bytecode file actually lives in
// the a.out.bc file generated by this program. Also, Force is on by default.
//
// 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 "gccld.h"
#include "llvm/Linker.h"
#include "llvm/Module.h"
#include "llvm/PassManager.h"
#include "llvm/Bytecode/Reader.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Transforms/IPO.h"
#include "llvm/Transforms/Scalar.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/FileUtilities.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/Streams.h"
#include "llvm/System/Signals.h"
#include "llvm/Support/SystemUtils.h"
#include <fstream>
#include <memory>
using namespace llvm;
namespace {
cl::list<std::string>
InputFilenames(cl::Positional, cl::desc("<input bytecode files>"),
cl::OneOrMore);
cl::opt<std::string>
OutputFilename("o", cl::desc("Override output filename"), cl::init("a.out"),
cl::value_desc("filename"));
cl::opt<bool>
Verbose("v", cl::desc("Print information about actions taken"));
cl::list<std::string>
LibPaths("L", cl::desc("Specify a library search path"), cl::Prefix,
cl::value_desc("directory"));
cl::list<std::string>
Libraries("l", cl::desc("Specify libraries to link to"), cl::Prefix,
cl::value_desc("library prefix"));
cl::opt<bool>
Strip("strip-all", cl::desc("Strip all symbol info from executable"));
cl::opt<bool>
StripDebug("strip-debug",
cl::desc("Strip debugger symbol info from executable"));
cl::opt<bool>
NoInternalize("disable-internalize",
cl::desc("Do not mark all symbols as internal"));
cl::alias
ExportDynamic("export-dynamic", cl::desc("Alias for -disable-internalize"),
cl::aliasopt(NoInternalize));
cl::opt<bool>
LinkAsLibrary("link-as-library", cl::desc("Link the .bc files together as a"
" library, not an executable"));
cl::alias
Relink("r", cl::desc("Alias for -link-as-library"),
cl::aliasopt(LinkAsLibrary));
cl::opt<bool>
Native("native", cl::ZeroOrMore,
cl::desc("Generate a native binary instead of a shell script"));
cl::opt<bool>
NativeCBE("native-cbe", cl::ZeroOrMore,
cl::desc("Generate a native binary with the C backend and GCC"));
cl::opt<bool>
SaveTemps("save-temps",
cl::desc("Do not delete temporary files"));
cl::list<std::string>
RPath("rpath",
cl::desc("Set runtime shared library search path (requires -native or"
" -native-cbe)"),
cl::Prefix, cl::value_desc("directory"));
cl::opt<std::string>
SOName("soname",
cl::desc("Set internal name of shared library (requires -native or"
" -native-cbe)"),
cl::Prefix, cl::value_desc("name"));
// Compatibility options that are ignored but supported by LD
cl::opt<std::string>
CO4("version-script", cl::Hidden, cl::desc("Compatibility option: ignored"));
cl::opt<bool>
CO5("eh-frame-hdr", cl::Hidden, cl::desc("Compatibility option: ignored"));
cl::opt<std::string>
CO6("h", cl::Hidden, cl::desc("Compatibility option: ignored"));
cl::opt<bool>
CO7("start-group", cl::Hidden, cl::desc("Compatibility option: ignored"));
cl::opt<bool>
CO8("end-group", cl::Hidden, cl::desc("Compatibility option: ignored"));
cl::alias A0("s", cl::desc("Alias for --strip-all"),
cl::aliasopt(Strip));
cl::alias A1("S", cl::desc("Alias for --strip-debug"),
cl::aliasopt(StripDebug));
}
/// PrintAndReturn - Prints a message to standard error and returns true.
///
/// Inputs:
/// progname - The name of the program (i.e. argv[0]).
/// Message - The message to print to standard error.
///
static int PrintAndReturn(const char *progname, const std::string &Message) {
cerr << progname << ": " << Message << "\n";
return 1;
}
/// EmitShellScript - Output the wrapper file that invokes the JIT on the LLVM
/// bytecode file for the program.
static void EmitShellScript(char **argv) {
#if defined(_WIN32) || defined(__CYGWIN__)
// 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 = FindExecutable("llvm-stub.exe", argv[0]);
if (llvmstub.isEmpty()) {
cerr << "Could not find llvm-stub.exe executable!\n";
exit(1);
}
if (0 != sys::CopyFile(sys::Path(OutputFilename), llvmstub, &ErrMsg)) {
cerr << argv[0] << ": " << ErrMsg << "\n";
exit(1);
}
return;
#endif
// Output the script to start the program...
std::ofstream Out2(OutputFilename.c_str());
if (!Out2.good())
exit(PrintAndReturn(argv[0], "error opening '" + OutputFilename +
"' for writing!"));
Out2 << "#!/bin/sh\n";
// Allow user to setenv LLVMINTERP if lli is not in their PATH.
Out2 << "lli=${LLVMINTERP-lli}\n";
Out2 << "exec $lli \\\n";
// 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) {
sys::Path FullLibraryPath = sys::Path::FindLibrary(*i);
if (!FullLibraryPath.isEmpty() && FullLibraryPath.isDynamicLibrary())
Out2 << " -load=" << FullLibraryPath.toString() << " \\\n";
}
Out2 << " $0.bc ${1+\"$@\"}\n";
Out2.close();
}
// 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 ) {
llvm_shutdown_obj X; // Call llvm_shutdown() on exit.
cl::ParseCommandLineOptions(argc, argv, " llvm linker for GCC\n");
sys::PrintStackTraceOnErrorSignal();
int exitCode = 0;
std::string ProgName = sys::Path(argv[0]).getBasename();
Linker TheLinker(ProgName, OutputFilename, Verbose);
try {
// Remove any consecutive duplicates of the same library...
Libraries.erase(std::unique(Libraries.begin(), Libraries.end()),
Libraries.end());
TheLinker.addPaths(LibPaths);
TheLinker.addSystemPaths();
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 by linker
// 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;
Linker::ItemList NativeItems;
BuildLinkItems(Items, InputFilenames, Libraries);
// Link all the items together
if (TheLinker.LinkInItems(Items,NativeItems))
return 1; // Error already printed
// Revise the Libraries based on the remaining (native) libraries that
// were not linked in to the bytecode. This ensures that we don't attempt
// to pass a bytecode library to the native linker
Libraries.clear(); // we've consumed the libraries except for native
if ((Native || NativeCBE) && !NativeItems.empty()) {
for (Linker::ItemList::const_iterator I = NativeItems.begin(),
E = NativeItems.end(); I != E; ++I) {
Libraries.push_back(I->first);
}
}
}
// We're done with the Linker, so tell it to release its module
std::auto_ptr<Module> Composite(TheLinker.releaseModule());
// Create the output file.
std::string RealBytecodeOutput = OutputFilename;
if (!LinkAsLibrary || Native || NativeCBE) RealBytecodeOutput += ".bc";
std::ios::openmode io_mode = std::ios::out | std::ios::trunc |
std::ios::binary;
std::ofstream Out(RealBytecodeOutput.c_str(), io_mode);
if (!Out.good())
return PrintAndReturn(argv[0], "error opening '" + RealBytecodeOutput +
"' for writing!");
// Ensure that the bytecode file gets removed from the disk if we get a
// SIGINT signal.
sys::RemoveFileOnSignal(sys::Path(RealBytecodeOutput));
// Strip everything if Strip is set, otherwise if stripdebug is set, just
// strip debug info.
int StripLevel = Strip ? 2 : (StripDebug ? 1 : 0);
// Internalize the module if neither -disable-internalize nor
// -link-as-library are passed in.
bool ShouldInternalize = !NoInternalize & !LinkAsLibrary;
// Generate the bytecode file.
if (GenerateBytecode(Composite.get(), StripLevel, ShouldInternalize, &Out)){
Out.close();
return PrintAndReturn(argv[0], "error generating bytecode");
}
// Close the bytecode file.
Out.close();
// Generate either a native file or a JIT shell script. If the user wants
// to generate a native file, compile it from the bytecode file. Otherwise,
// if the target is not a library, 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(argv[0], "Failed to find llc");
sys::Path gcc = FindExecutable("gcc", argv[0]);
if (gcc.isEmpty())
return PrintAndReturn(argv[0], "Failed to find gcc");
// Generate an assembly language file for the bytecode.
if (Verbose) cout << "Generating Assembly Code\n";
std::string ErrMsg;
if (0 != GenerateAssembly(
AssemblyFile.toString(), RealBytecodeOutput, llc, ErrMsg, Verbose)) {
cerr << argv[0] << ": " << ErrMsg << "\n";
return 2;
}
if (Verbose) cout << "Generating Native Code\n";
if (0 != GenerateNative(OutputFilename, AssemblyFile.toString(),
LibPaths, Libraries, gcc, envp, LinkAsLibrary,
NoInternalize, RPath, SOName, ErrMsg, Verbose) ) {
cerr << argv[0] << ": " << ErrMsg << "\n";
return 2;
}
if (!SaveTemps) {
// Remove the assembly language file.
AssemblyFile.eraseFromDisk();
// Remove the bytecode language file.
sys::Path(RealBytecodeOutput).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(argv[0], "Failed to find llc");
sys::Path gcc = FindExecutable("gcc", argv[0]);
if (gcc.isEmpty())
return PrintAndReturn(argv[0], "Failed to find gcc");
// Generate an assembly language file for the bytecode.
if (Verbose) cout << "Generating C Source Code\n";
std::string ErrMsg;
if (0 != GenerateCFile(
CFile.toString(), RealBytecodeOutput, llc, ErrMsg, Verbose)) {
cerr << argv[0] << ": " << ErrMsg << "\n";
return 2;
}
if (Verbose) cout << "Generating Native Code\n";
if (0 != GenerateNative(OutputFilename, CFile.toString(),
LibPaths, Libraries, gcc, envp, LinkAsLibrary,
NoInternalize, RPath, SOName, ErrMsg, Verbose)) {
cerr << argv[0] << ": " << ErrMsg << "\n";
return 2;
}
if (!SaveTemps) {
// Remove the assembly language file.
CFile.eraseFromDisk();
// Remove the bytecode language file.
sys::Path(RealBytecodeOutput).eraseFromDisk();
}
} else if (!LinkAsLibrary) {
EmitShellScript(argv);
// Make the bytecode file readable and directly executable in LLEE
std::string ErrMsg;
if (sys::Path(RealBytecodeOutput).makeExecutableOnDisk(&ErrMsg)) {
cerr << argv[0] << ": " << ErrMsg << "\n";
return 1;
}
if (sys::Path(RealBytecodeOutput).makeReadableOnDisk(&ErrMsg)) {
cerr << argv[0] << ": " << ErrMsg << "\n";
return 1;
}
}
// Make the output, whether native or script, executable as well...
std::string ErrMsg;
if (sys::Path(OutputFilename).makeExecutableOnDisk(&ErrMsg)) {
cerr << argv[0] << ": " << ErrMsg << "\n";
return 1;
}
} catch (const char*msg) {
cerr << argv[0] << ": " << msg << "\n";
exitCode = 1;
} catch (const std::string& msg) {
cerr << argv[0] << ": " << msg << "\n";
exitCode = 2;
} catch (...) {
// This really shouldn't happen, but just in case ....
cerr << argv[0] << ": An unexpected unknown exception occurred.\n";
exitCode = 3;
}
llvm_shutdown();
return exitCode;
}

56
tools/gccld/gccld.h
View File

@ -1,56 +0,0 @@
//===- gccld.h - Utility functions header file ------------------*- C++ -*-===//
//
// 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 file contains function prototypes for the functions in util.cpp.
//
//===----------------------------------------------------------------------===//
#include "llvm/Module.h"
#include "llvm/Linker.h"
#include <string>
#include <set>
#include <ostream>
namespace llvm {
int
GenerateBytecode (Module *M,
int StripLevel,
bool Internalize,
std::ostream *Out);
int
GenerateAssembly (const std::string &OutputFilename,
const std::string &InputFilename,
const sys::Path &llc,
std::string& ErrMsg,
bool Verbose=false);
int
GenerateCFile (const std::string &OutputFile,
const std::string &InputFile,
const sys::Path &llc,
std::string& ErrMsg,
bool Verbose=false);
int
GenerateNative (const std::string &OutputFilename,
const std::string &InputFilename,
const std::vector<std::string> &LibPaths,
const std::vector<std::string> &Libraries,
const sys::Path &gcc,
char ** const envp,
bool Shared,
bool ExportAllAsDynamic,
const std::vector<std::string> &RPath,
const std::string &SOName,
std::string& ErrMsg,
bool Verbose=false);
} // End llvm namespace