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//===- lib/ReaderWriter/PECOFF/PECOFFLinkingContext.cpp -------------------===//
//
// The LLVM Linker
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "Atoms.h"
#include "GroupedSectionsPass.h"
#include "IdataPass.h"
#include "LinkerGeneratedSymbolFile.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/Path.h"
#include "lld/Core/InputFiles.h"
#include "lld/Core/PassManager.h"
#include "lld/Passes/LayoutPass.h"
#include "lld/ReaderWriter/PECOFFLinkingContext.h"
#include "lld/ReaderWriter/Reader.h"
#include "lld/ReaderWriter/Simple.h"
#include "lld/ReaderWriter/Writer.h"
namespace lld {
namespace {} // anonymous namespace
error_code PECOFFLinkingContext::parseFile(
std::unique_ptr<MemoryBuffer> &mb,
std::vector<std::unique_ptr<File>> &result) const {
return _reader->parseFile(mb, result);
}
bool PECOFFLinkingContext::validateImpl(raw_ostream &diagnostics) {
if (_stackReserve < _stackCommit) {
diagnostics << "Invalid stack size: reserve size must be equal to or "
<< "greater than commit size, but got " << _stackCommit
<< " and " << _stackReserve << ".\n";
return true;
}
if (_heapReserve < _heapCommit) {
diagnostics << "Invalid heap size: reserve size must be equal to or "
<< "greater than commit size, but got " << _heapCommit
<< " and " << _heapReserve << ".\n";
return true;
}
_reader = createReaderPECOFF(*this);
_writer = createWriterPECOFF(*this);
return false;
}
std::unique_ptr<File> PECOFFLinkingContext::createEntrySymbolFile() {
if (entrySymbolName().empty())
return nullptr;
std::unique_ptr<SimpleFile> entryFile(
new SimpleFile(*this, "command line option /entry"));
entryFile->addAtom(
*(new (_allocator) SimpleUndefinedAtom(*entryFile, entrySymbolName())));
return std::move(entryFile);
}
std::unique_ptr<File> PECOFFLinkingContext::createUndefinedSymbolFile() {
if (_initialUndefinedSymbols.empty())
return nullptr;
std::unique_ptr<SimpleFile> undefinedSymFile(
new SimpleFile(*this, "command line option /c (or) /include"));
for (auto undefSymStr : _initialUndefinedSymbols)
undefinedSymFile->addAtom(*(new (_allocator) SimpleUndefinedAtom(
*undefinedSymFile, undefSymStr)));
return std::move(undefinedSymFile);
}
void PECOFFLinkingContext::addImplicitFiles(InputFiles &files) const {
auto *linkerFile = new (_alloc) coff::LinkerGeneratedSymbolFile(*this);
files.appendFile(*linkerFile);
}
/// Try to find the input library file from the search paths and append it to
/// the input file list. Returns true if the library file is found.
StringRef PECOFFLinkingContext::searchLibraryFile(StringRef filename) const {
// Current directory always takes precedence over the search paths.
if (llvm::sys::path::is_absolute(filename) || llvm::sys::fs::exists(filename))
return filename;
// Iterate over the search paths.
for (StringRef dir : _inputSearchPaths) {
SmallString<128> path = dir;
llvm::sys::path::append(path, filename);
if (llvm::sys::fs::exists(path.str()))
return allocateString(path.str());
}
return filename;
}
Writer &PECOFFLinkingContext::writer() const { return *_writer; }
ErrorOr<Reference::Kind>
PECOFFLinkingContext::relocKindFromString(StringRef str) const {
return make_error_code(yaml_reader_error::illegal_value);
}
ErrorOr<std::string>
PECOFFLinkingContext::stringFromRelocKind(Reference::Kind kind) const {
return make_error_code(yaml_reader_error::illegal_value);
}
void PECOFFLinkingContext::addPasses(PassManager &pm) const {
pm.add(std::unique_ptr<Pass>(new pecoff::GroupedSectionsPass()));
pm.add(std::unique_ptr<Pass>(new pecoff::IdataPass()));
pm.add(std::unique_ptr<Pass>(new LayoutPass()));
}
} // end namespace lld
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