//===- 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
//===----------------------------------------------------------------------===//
#include "gccld.h"
-#include "llvm/Linker.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"
+
using namespace llvm;
namespace {
else
*p = '=';
}
+}
- return;
+static void dumpArgs(const char **args) {
+ std::cerr << *args++;
+ while (*args)
+ std::cerr << ' ' << *args++;
+ std::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:
if (Verify) Passes.add(createVerifierPass());
// Add an appropriate TargetData instance for this module...
- addPass(Passes, new TargetData("gccld", M));
+ addPass(Passes, new TargetData(M));
// Often if the programmer does not specify proper prototypes for the
// functions they are calling, they end up calling a vararg version of the
addPass(Passes, createFunctionResolvingPass());
if (!DisableOptimizations) {
- if (Internalize) {
- // 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());
- }
+ // 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));
// Now that we internalized some globals, see if we can hack on them!
addPass(Passes, createGlobalOptimizerPass());
/// InputFilename - The name of the output 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.
///
/// Return non-zero value on error.
///
int llvm::GenerateAssembly(const std::string &OutputFilename,
const std::string &InputFilename,
- const std::string &llc,
- char ** const envp) {
+ const sys::Path &llc,
+ std::string& ErrMsg,
+ bool Verbose) {
// Run LLC to convert the bytecode file into assembly code.
- const char *cmd[6];
- cmd[0] = llc.c_str();
- cmd[1] = "-f";
- cmd[2] = "-o";
- cmd[3] = OutputFilename.c_str();
- cmd[4] = InputFilename.c_str();
- cmd[5] = 0;
-
- return ExecWait(cmd, envp);
+ 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);
}
-/// GenerateAssembly - generates a native assembly language source file from the
-/// specified bytecode file.
+/// GenerateCFile - generates a C source file from the specified bytecode file.
int llvm::GenerateCFile(const std::string &OutputFile,
const std::string &InputFile,
- const std::string &llc, char ** const envp) {
+ const sys::Path &llc,
+ std::string& ErrMsg,
+ bool Verbose) {
// Run LLC to convert the bytecode file into C.
- const char *cmd[7];
-
- cmd[0] = llc.c_str();
- cmd[1] = "-march=c";
- cmd[2] = "-f";
- cmd[3] = "-o";
- cmd[4] = OutputFile.c_str();
- cmd[5] = InputFile.c_str();
- cmd[6] = 0;
- return ExecWait(cmd, envp);
+ 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 assembly language source file from the
-/// specified assembly source file.
+/// 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.
-/// 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.
///
///
int llvm::GenerateNative(const std::string &OutputFilename,
const std::string &InputFilename,
- const std::vector<std::string> &Libraries,
const std::vector<std::string> &LibPaths,
- const std::string &gcc, char ** const envp) {
+ 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
RemoveEnv("COMPILER_PATH", clean_env);
RemoveEnv("COLLECT_GCC", clean_env);
- std::vector<const char *> cmd;
// Run GCC to assemble and link the program into native code.
//
// 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.
- cmd.push_back(gcc.c_str());
- cmd.push_back("-fno-strict-aliasing");
- cmd.push_back("-O3");
- cmd.push_back("-o");
- cmd.push_back(OutputFilename.c_str());
- cmd.push_back(InputFilename.c_str());
-
- // Adding the library paths creates a problem for native generation. If we
- // include the search paths from llvmgcc, then we'll be telling normal gcc
- // to look inside of llvmgcc's library directories for libraries. This is
- // bad because those libraries hold only bytecode files (not native object
- // files). In the end, we attempt to link the bytecode libgcc into a native
- // program.
-#if 0
- // Add in the library path options.
- for (unsigned index=0; index < LibPaths.size(); index++) {
- cmd.push_back("-L");
- cmd.push_back(LibPaths[index].c_str());
+ 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());
}
-#endif
+
+ // 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.
- std::vector<std::string> Libs(Libraries);
- for (unsigned index = 0; index < Libs.size(); index++) {
- if (Libs[index] != "crtend") {
- Libs[index] = "-l" + Libs[index];
- cmd.push_back(Libs[index].c_str());
+ 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());
}
- }
- cmd.push_back(NULL);
+ args.push_back(0); // Null terminate.
// Run the compiler to assembly and link together the program.
- return ExecWait(&(cmd[0]), clean_env);
+ 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;
}
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