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//===- lib/Driver/DarwinLdDriver.cpp --------------------------------------===//
//
// The LLVM Linker
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// \file
///
/// Concrete instance of the Driver for darwin's ld.
///
//===----------------------------------------------------------------------===//
#include "lld/Driver/Driver.h"
#include "lld/ReaderWriter/MachOTargetInfo.h"
#include "../ReaderWriter/MachO/MachOFormat.hpp"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/Triple.h"
#include "llvm/Option/Arg.h"
#include "llvm/Option/Option.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Host.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/Signals.h"
namespace {
// Create enum with OPT_xxx values for each option in DarwinOptions.td
enum DarwinOpt {
OPT_INVALID = 0,
#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, FLAGS, PARAM, HELP, META) \
OPT_##ID,
#include "DarwinOptions.inc"
LastOption
#undef OPTION
};
// Create prefix string literals used in DarwinOptions.td
#define PREFIX(NAME, VALUE) const char *const NAME[] = VALUE;
#include "DarwinOptions.inc"
#undef PREFIX
// Create table mapping all options defined in DarwinOptions.td
static const llvm::opt::OptTable::Info infoTable[] = {
#define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, FLAGS, PARAM, \
HELPTEXT, METAVAR) \
{ PREFIX, NAME, HELPTEXT, METAVAR, OPT_##ID, llvm::opt::Option::KIND##Class, \
PARAM, FLAGS, OPT_##GROUP, OPT_##ALIAS },
#include "DarwinOptions.inc"
#undef OPTION
};
// Create OptTable class for parsing actual command line arguments
class DarwinLdOptTable : public llvm::opt::OptTable {
public:
DarwinLdOptTable() : OptTable(infoTable, llvm::array_lengthof(infoTable)){}
};
} // namespace anonymous
namespace lld {
bool DarwinLdDriver::linkMachO(int argc, const char *argv[],
raw_ostream &diagnostics) {
MachOTargetInfo info;
if (parse(argc, argv, info, diagnostics))
return true;
return link(info, diagnostics);
}
bool DarwinLdDriver::parse(int argc, const char *argv[],
MachOTargetInfo &info, raw_ostream &diagnostics) {
// Parse command line options using DarwinOptions.td
std::unique_ptr<llvm::opt::InputArgList> parsedArgs;
DarwinLdOptTable table;
unsigned missingIndex;
unsigned missingCount;
parsedArgs.reset(table.ParseArgs(&argv[1], &argv[argc],
missingIndex, missingCount));
if (missingCount) {
diagnostics << "error: missing arg value for '"
<< parsedArgs->getArgString(missingIndex)
<< "' expected " << missingCount << " argument(s).\n";
return true;
}
for (auto it = parsedArgs->filtered_begin(OPT_UNKNOWN),
ie = parsedArgs->filtered_end(); it != ie; ++it) {
diagnostics << "warning: ignoring unknown argument: "
<< (*it)->getAsString(*parsedArgs) << "\n";
}
// Figure out output kind ( -dylib, -r, -bundle, -preload, or -static )
if ( llvm::opt::Arg *kind = parsedArgs->getLastArg(OPT_dylib, OPT_relocatable,
OPT_bundle, OPT_static, OPT_preload)) {
switch (kind->getOption().getID()) {
case OPT_dylib:
info.setOutputFileType(mach_o::MH_DYLIB);
break;
case OPT_relocatable:
info.setPrintRemainingUndefines(false);
info.setAllowRemainingUndefines(true);
info.setOutputFileType(mach_o::MH_OBJECT);
break;
case OPT_bundle:
info.setOutputFileType(mach_o::MH_BUNDLE);
break;
case OPT_static:
info.setOutputFileType(mach_o::MH_EXECUTE);
break;
case OPT_preload:
info.setOutputFileType(mach_o::MH_PRELOAD);
break;
}
}
// Handle -e xxx
if (llvm::opt::Arg *entry = parsedArgs->getLastArg(OPT_entry))
info.setEntrySymbolName(entry->getValue());
// Handle -o xxx
if (llvm::opt::Arg *outpath = parsedArgs->getLastArg(OPT_output))
info.setOutputPath(outpath->getValue());
// Handle -dead_strip
if (parsedArgs->getLastArg(OPT_dead_strip))
info.setDeadStripping(true);
// Handle -arch xxx
if (llvm::opt::Arg *archStr = parsedArgs->getLastArg(OPT_arch)) {
info.setArch(llvm::StringSwitch<MachOTargetInfo::Arch>(archStr->getValue())
.Case("x86_64", MachOTargetInfo::arch_x86_64)
.Case("i386", MachOTargetInfo::arch_x86)
.Case("armv6", MachOTargetInfo::arch_armv6)
.Case("armv7", MachOTargetInfo::arch_armv7)
.Case("armv7s", MachOTargetInfo::arch_armv7s)
.Default(MachOTargetInfo::arch_unknown));
}
// Handle -macosx_version_min or -ios_version_min
if (llvm::opt::Arg *minOS = parsedArgs->getLastArg(
OPT_macosx_version_min,
OPT_ios_version_min,
OPT_ios_simulator_version_min)) {
switch (minOS->getOption().getID()) {
case OPT_macosx_version_min:
if (info.setOS(MachOTargetInfo::OS::macOSX, minOS->getValue())) {
diagnostics << "error: malformed macosx_version_min value\n";
return true;
}
break;
case OPT_ios_version_min:
if (info.setOS(MachOTargetInfo::OS::iOS, minOS->getValue())) {
diagnostics << "error: malformed ios_version_min value\n";
return true;
}
break;
case OPT_ios_simulator_version_min:
if (info.setOS(MachOTargetInfo::OS::iOS_simulator, minOS->getValue())) {
diagnostics << "error: malformed ios_simulator_version_min value\n";
return true;
}
break;
}
}
else {
// No min-os version on command line, check environment variables
}
// Handle input files
for (llvm::opt::arg_iterator it = parsedArgs->filtered_begin(OPT_INPUT),
ie = parsedArgs->filtered_end();
it != ie; ++it) {
info.appendInputFile((*it)->getValue());
}
return false;
}
} // namespace lld
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