//
// The LLVM Compiler Infrastructure
//
-// This file was developed by Reid Spencer and is distributed under the
-// University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
-// This file contains routines to handle linking together LLVM bytecode files,
+// This file contains routines to handle linking together LLVM bitcode files,
// and to handle annoying things like static libraries.
//
//===----------------------------------------------------------------------===//
#include "llvm/Linker.h"
#include "llvm/Module.h"
-
+#include "llvm/Bitcode/ReaderWriter.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/system_error.h"
using namespace llvm;
// LinkItems - This function is the main entry point into linking. It takes a
// list of LinkItem which indicates the order the files should be linked and
// how each file should be treated (plain file or with library search). The
-// function only links bytecode and produces a result list of items that are
+// function only links bitcode and produces a result list of items that are
// native objects.
bool
Linker::LinkInItems(const ItemList& Items, ItemList& NativeItems) {
/// LinkInLibrary - links one library into the HeadModule.
///
-bool Linker::LinkInLibrary(const std::string& Lib, bool& is_native) {
+bool Linker::LinkInLibrary(StringRef Lib, bool& is_native) {
is_native = false;
// Determine where this library lives.
sys::Path Pathname = FindLib(Lib);
if (Pathname.isEmpty())
- return warning("Cannot find library '" + Lib + "'");
+ return error("Cannot find library '" + Lib.str() + "'");
// If its an archive, try to link it in
std::string Magic;
Pathname.getMagicNumber(Magic, 64);
switch (sys::IdentifyFileType(Magic.c_str(), 64)) {
- default: assert(0 && "Bad file type identification");
+ default: llvm_unreachable("Bad file type identification");
case sys::Unknown_FileType:
- return warning("Supposed library '" + Lib + "' isn't a library.");
+ return warning("Supposed library '" + Lib.str() + "' isn't a library.");
- case sys::Bytecode_FileType:
- case sys::CompressedBytecode_FileType:
+ case sys::Bitcode_FileType:
// LLVM ".so" file.
if (LinkInFile(Pathname, is_native))
- return error("Cannot link file '" + Pathname.toString() + "'");
+ return true;
break;
case sys::Archive_FileType:
- if (LinkInArchive(Pathname))
- return error("Cannot link archive '" + Pathname.toString() + "'");
+ if (LinkInArchive(Pathname, is_native))
+ return error("Cannot link archive '" + Pathname.str() + "'");
break;
case sys::ELF_Relocatable_FileType:
}
/// LinkLibraries - takes the specified library files and links them into the
-/// main bytecode object file.
+/// main bitcode object file.
///
/// Inputs:
/// Libraries - The list of libraries to link into the module.
return false;
}
-/// LinkInFile - opens a bytecode file and links in all objects which
+/// LinkInFile - opens a bitcode file and links in all objects which
/// provide symbols that are currently undefined.
///
/// Inputs:
-/// File - The pathname of the bytecode file.
+/// File - The pathname of the bitcode file.
///
/// Outputs:
/// ErrorMessage - A C++ string detailing what error occurred, if any.
///
bool Linker::LinkInFile(const sys::Path &File, bool &is_native) {
is_native = false;
- // Make sure we can at least read the file
- if (!File.canRead())
- return error("Cannot find linker input '" + File.toString() + "'");
+
+ // Check for a file of name "-", which means "read standard input"
+ if (File.str() == "-") {
+ std::auto_ptr<Module> M;
+ OwningPtr<MemoryBuffer> Buffer;
+ error_code ec;
+ if (!(ec = MemoryBuffer::getSTDIN(Buffer))) {
+ if (!Buffer->getBufferSize()) {
+ Error = "standard input is empty";
+ } else {
+ M.reset(ParseBitcodeFile(Buffer.get(), Context, &Error));
+ if (M.get())
+ if (!LinkInModule(M.get(), &Error))
+ return false;
+ }
+ }
+ return error("Cannot link stdin: " + ec.message());
+ }
- // If its an archive, try to link it in
+ // Determine what variety of file it is.
std::string Magic;
- File.getMagicNumber(Magic, 64);
+ if (!File.getMagicNumber(Magic, 64))
+ return error("Cannot find linker input '" + File.str() + "'");
+
switch (sys::IdentifyFileType(Magic.c_str(), 64)) {
- default: assert(0 && "Bad file type identification");
+ default: llvm_unreachable("Bad file type identification");
case sys::Unknown_FileType:
- return warning("Supposed object file '" + File.toString() +
- "' not recognized as such");
+ return warning("Ignoring file '" + File.str() +
+ "' because does not contain bitcode.");
case sys::Archive_FileType:
// A user may specify an ar archive without -l, perhaps because it
// is not installed as a library. Detect that and link the archive.
- verbose("Linking archive file '" + File.toString() + "'");
- if (LinkInArchive(File))
- return error("Cannot link archive '" + File.toString() + "'");
+ if (LinkInArchive(File, is_native))
+ return true;
break;
- case sys::Bytecode_FileType:
- case sys::CompressedBytecode_FileType: {
- verbose("Linking bytecode file '" + File.toString() + "'");
+ case sys::Bitcode_FileType: {
+ verbose("Linking bitcode file '" + File.str() + "'");
std::auto_ptr<Module> M(LoadObject(File));
if (M.get() == 0)
- return error("Cannot load file '" + File.toString() + "'" + Error);
- if (LinkInModule(M.get()))
- return error("Cannot link file '" + File.toString() + "'" + Error);
+ return error("Cannot load file '" + File.str() + "': " + Error);
+ if (LinkInModule(M.get(), &Error))
+ return error("Cannot link file '" + File.str() + "': " + Error);
- verbose("Linked in file '" + File.toString() + "'");
+ verbose("Linked in file '" + File.str() + "'");
break;
}
/// or relative pathname, or as a file somewhere in LLVM_LIB_SEARCH_PATH.
///
/// Inputs:
-/// Files - A vector of sys::Path indicating the LLVM bytecode filenames
+/// Files - A vector of sys::Path indicating the LLVM bitcode filenames
/// to be linked. The names can refer to a mixture of pure LLVM
-/// bytecode files and archive (ar) formatted files.
+/// bitcode files and archive (ar) formatted files.
///
/// Return value:
/// FALSE - No errors.
projects / oota-llvm.git / blobdiff