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Changes to enable creation of native executables directly from gccld and to

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ensure that -L paths don't contain both bytecode and native libraries.
This patch contributed by Adam Treat.

llvm-svn: 20370
This commit is contained in:
Reid Spencer 2005-02-28 08:45:35 +00:00
parent 623e1450d0
commit 140a377f08
3 changed files with 178 additions and 69 deletions
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91
tools/gccld/GenerateCode.cpp
View File

@ -20,6 +20,7 @@
#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"
@ -127,6 +128,62 @@ static inline void addPass(PassManager &PM, Pass *P) {
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) {
bool isBytecodeLPath = false;
// Make sure the -L path has a '/' character
// because llvm-g++ passes them without the ending
// '/' char and sys::Path doesn't think it is a
// directory (see: sys::Path::isDirectory) without it
std::string dir = LibPath;
if ( dir[dir.length()-1] != '/' )
dir.append("/");
sys::Path LPath(dir);
// Grab the contents of the -L path
std::set<sys::Path> Files;
LPath.getDirectoryContents(Files);
// 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();
for (; File != Files.end(); ++File) {
if ( File->isDirectory() )
continue;
std::string path = File->toString();
std::string dllsuffix = sys::Path::GetDLLSuffix();
// 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))
isBytecodeLPath = true;
}
return isBytecodeLPath;
}
/// GenerateBytecode - generates a bytecode file from the specified module.
///
/// Inputs:
@ -285,8 +342,12 @@ int llvm::GenerateCFile(const std::string &OutputFile,
///
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) {
const sys::Path &gcc, char ** const envp,
bool Shared,
const std::string &RPath,
const std::string &SOName) {
// 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
@ -316,7 +377,33 @@ int llvm::GenerateNative(const std::string &OutputFilename,
args.push_back("-o");
args.push_back(OutputFilename.c_str());
args.push_back(InputFilename.c_str());
if (Shared) args.push_back("-shared");
if (!RPath.empty()) {
std::string rp = "-Wl,-rpath," + RPath;
args.push_back(rp.c_str());
}
if (!SOName.empty()) {
std::string so = "-Wl,-soname," + SOName;
args.push_back(so.c_str());
}
// 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]) ) {
args.push_back("-L");
args.push_back(LibPaths[index].c_str());
}
}
// Add in the libraries to link.
for (unsigned index = 0; index < Libraries.size(); index++) {
if (Libraries[index] != "crtend") {

144
tools/gccld/gccld.cpp
View File

@ -83,11 +83,21 @@ namespace {
cl::opt<bool>
NativeCBE("native-cbe",
cl::desc("Generate a native binary with the C backend and GCC"));
cl::opt<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>
CO3("soname", cl::Hidden, cl::desc("Compatibility option: ignored"));
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"));
@ -237,7 +247,7 @@ int main(int argc, char **argv, char **envp ) {
// Create the output file.
std::string RealBytecodeOutput = OutputFilename;
if (!LinkAsLibrary) RealBytecodeOutput += ".bc";
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);
@ -266,77 +276,83 @@ int main(int argc, char **argv, char **envp ) {
// Close the bytecode file.
Out.close();
// 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");
// 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));
// 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");
// 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");
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) 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 );
// 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(),
LibPaths, Libraries, gcc, envp, LinkAsLibrary, RPath,
SOName );
// 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(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) 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();
} else {
EmitShellScript(argv);
}
// Remove the assembly language file.
AssemblyFile.destroyFile();
// Remove the bytecode language file.
sys::Path(RealBytecodeOutput).destroyFile();
// Make the script executable...
sys::Path(OutputFilename).makeExecutable();
} else if (NativeCBE) {
sys::Path CFile (OutputFilename);
CFile.appendSuffix("cbe.c");
// Make the bytecode file readable and directly executable in LLEE as well
// 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) std::cout << "Generating Assembly Code\n";
GenerateCFile(CFile.toString(), RealBytecodeOutput, llc);
if (Verbose) std::cout << "Generating Native Code\n";
GenerateNative(OutputFilename, CFile.toString(),
LibPaths, Libraries, gcc, envp, LinkAsLibrary, RPath,
SOName );
// Remove the assembly language file.
CFile.destroyFile();
// Remove the bytecode language file.
sys::Path(RealBytecodeOutput).destroyFile();
} else if (!LinkAsLibrary) {
EmitShellScript(argv);
// Make the bytecode file readable and directly executable in LLEE
sys::Path(RealBytecodeOutput).makeExecutable();
sys::Path(RealBytecodeOutput).makeReadable();
}
// Make the output, whether native or script, executable as well...
sys::Path(OutputFilename).makeExecutable();
} catch (const char*msg) {
std::cerr << argv[0] << ": " << msg << "\n";
exitCode = 1;

12
tools/gccld/gccld.h
View File

@ -31,13 +31,19 @@ GenerateAssembly (const std::string & OutputFilename,
const std::string & InputFilename,
const sys::Path & llc);
int GenerateCFile(const std::string &OutputFile, const std::string &InputFile,
const sys::Path &llc);
int
GenerateCFile (const std::string &OutputFile,
const std::string &InputFile,
const sys::Path &llc);
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);
char ** const envp,
bool Shared,
const std::string & RPath,
const std::string & SOName);
} // End llvm namespace