maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/lld/COFF/DriverUtils.cpp

740 lines
23 KiB
C++
Raw Blame History

//===- DriverUtils.cpp ----------------------------------------------------===//
//
// The LLVM Linker
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains utility functions for the driver. Because there
// are so many small functions, we created this separate file to make
// Driver.cpp less cluttered.
//
//===----------------------------------------------------------------------===//
#include "Config.h"
#include "Driver.h"
#include "Error.h"
#include "Symbols.h"
#include "llvm/ADT/Optional.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/Object/Archive.h"
#include "llvm/Object/ArchiveWriter.h"
#include "llvm/Object/COFF.h"
#include "llvm/Option/Arg.h"
#include "llvm/Option/ArgList.h"
#include "llvm/Option/Option.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/FileUtilities.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/Process.h"
#include "llvm/Support/Program.h"
#include "llvm/Support/raw_ostream.h"
#include <memory>
using namespace llvm::COFF;
using namespace llvm;
using llvm::cl::ExpandResponseFiles;
using llvm::cl::TokenizeWindowsCommandLine;
using llvm::sys::Process;
namespace lld {
namespace coff {
namespace {
class Executor {
public:
explicit Executor(StringRef S) : Saver(Alloc), Prog(Saver.save(S)) {}
void add(StringRef S) { Args.push_back(Saver.save(S)); }
void add(std::string &S) { Args.push_back(Saver.save(S)); }
void add(Twine S) { Args.push_back(Saver.save(S)); }
void add(const char *S) { Args.push_back(Saver.save(S)); }
void run() {
ErrorOr<std::string> ExeOrErr = llvm::sys::findProgramByName(Prog);
error(ExeOrErr, Twine("unable to find ") + Prog + " in PATH: ");
const char *Exe = Saver.save(*ExeOrErr);
Args.insert(Args.begin(), Exe);
Args.push_back(nullptr);
if (llvm::sys::ExecuteAndWait(Args[0], Args.data()) != 0) {
for (const char *S : Args)
if (S)
llvm::errs() << S << " ";
error("failed");
}
}
private:
llvm::BumpPtrAllocator Alloc;
llvm::StringSaver Saver;
StringRef Prog;
std::vector<const char *> Args;
};
} // anonymous namespace
// Returns /machine's value.
MachineTypes getMachineType(StringRef S) {
MachineTypes MT = StringSwitch<MachineTypes>(S.lower())
.Case("x64", AMD64)
.Case("amd64", AMD64)
.Case("x86", I386)
.Case("i386", I386)
.Case("arm", ARMNT)
.Default(IMAGE_FILE_MACHINE_UNKNOWN);
if (MT != IMAGE_FILE_MACHINE_UNKNOWN)
return MT;
error(Twine("unknown /machine argument: ") + S);
}
StringRef machineToStr(MachineTypes MT) {
switch (MT) {
case ARMNT:
return "arm";
case AMD64:
return "x64";
case I386:
return "x86";
default:
llvm_unreachable("unknown machine type");
}
}
// Parses a string in the form of "<integer>[,<integer>]".
void parseNumbers(StringRef Arg, uint64_t *Addr, uint64_t *Size) {
StringRef S1, S2;
std::tie(S1, S2) = Arg.split(',');
if (S1.getAsInteger(0, *Addr))
error(Twine("invalid number: ") + S1);
if (Size && !S2.empty() && S2.getAsInteger(0, *Size))
error(Twine("invalid number: ") + S2);
}
// Parses a string in the form of "<integer>[.<integer>]".
// If second number is not present, Minor is set to 0.
void parseVersion(StringRef Arg, uint32_t *Major, uint32_t *Minor) {
StringRef S1, S2;
std::tie(S1, S2) = Arg.split('.');
if (S1.getAsInteger(0, *Major))
error(Twine("invalid number: ") + S1);
*Minor = 0;
if (!S2.empty() && S2.getAsInteger(0, *Minor))
error(Twine("invalid number: ") + S2);
}
// Parses a string in the form of "<subsystem>[,<integer>[.<integer>]]".
void parseSubsystem(StringRef Arg, WindowsSubsystem *Sys, uint32_t *Major,
uint32_t *Minor) {
StringRef SysStr, Ver;
std::tie(SysStr, Ver) = Arg.split(',');
*Sys = StringSwitch<WindowsSubsystem>(SysStr.lower())
.Case("boot_application", IMAGE_SUBSYSTEM_WINDOWS_BOOT_APPLICATION)
.Case("console", IMAGE_SUBSYSTEM_WINDOWS_CUI)
.Case("efi_application", IMAGE_SUBSYSTEM_EFI_APPLICATION)
.Case("efi_boot_service_driver", IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER)
.Case("efi_rom", IMAGE_SUBSYSTEM_EFI_ROM)
.Case("efi_runtime_driver", IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER)
.Case("native", IMAGE_SUBSYSTEM_NATIVE)
.Case("posix", IMAGE_SUBSYSTEM_POSIX_CUI)
.Case("windows", IMAGE_SUBSYSTEM_WINDOWS_GUI)
.Default(IMAGE_SUBSYSTEM_UNKNOWN);
if (*Sys == IMAGE_SUBSYSTEM_UNKNOWN)
error(Twine("unknown subsystem: ") + SysStr);
if (!Ver.empty())
parseVersion(Ver, Major, Minor);
}
// Parse a string of the form of "<from>=<to>".
// Results are directly written to Config.
void parseAlternateName(StringRef S) {
StringRef From, To;
std::tie(From, To) = S.split('=');
if (From.empty() || To.empty())
error(Twine("/alternatename: invalid argument: ") + S);
auto It = Config->AlternateNames.find(From);
if (It != Config->AlternateNames.end() && It->second != To)
error(Twine("/alternatename: conflicts: ") + S);
Config->AlternateNames.insert(It, std::make_pair(From, To));
}
// Parse a string of the form of "<from>=<to>".
// Results are directly written to Config.
void parseMerge(StringRef S) {
StringRef From, To;
std::tie(From, To) = S.split('=');
if (From.empty() || To.empty())
error(Twine("/merge: invalid argument: ") + S);
auto Pair = Config->Merge.insert(std::make_pair(From, To));
bool Inserted = Pair.second;
if (!Inserted) {
StringRef Existing = Pair.first->second;
if (Existing != To)
llvm::errs() << "warning: " << S << ": already merged into "
<< Existing << "\n";
}
}
// Parses a string in the form of "EMBED[,=<integer>]|NO".
// Results are directly written to Config.
void parseManifest(StringRef Arg) {
if (Arg.equals_lower("no")) {
Config->Manifest = Configuration::No;
return;
}
if (!Arg.startswith_lower("embed"))
error(Twine("Invalid option ") + Arg);
Config->Manifest = Configuration::Embed;
Arg = Arg.substr(strlen("embed"));
if (Arg.empty())
return;
if (!Arg.startswith_lower(",id="))
error(Twine("Invalid option ") + Arg);
Arg = Arg.substr(strlen(",id="));
if (Arg.getAsInteger(0, Config->ManifestID))
error(Twine("Invalid option ") + Arg);
}
// Parses a string in the form of "level=<string>|uiAccess=<string>|NO".
// Results are directly written to Config.
void parseManifestUAC(StringRef Arg) {
if (Arg.equals_lower("no")) {
Config->ManifestUAC = false;
return;
}
for (;;) {
Arg = Arg.ltrim();
if (Arg.empty())
return;
if (Arg.startswith_lower("level=")) {
Arg = Arg.substr(strlen("level="));
std::tie(Config->ManifestLevel, Arg) = Arg.split(" ");
continue;
}
if (Arg.startswith_lower("uiaccess=")) {
Arg = Arg.substr(strlen("uiaccess="));
std::tie(Config->ManifestUIAccess, Arg) = Arg.split(" ");
continue;
}
error(Twine("Invalid option ") + Arg);
}
}
// Quote each line with "". Existing double-quote is converted
// to two double-quotes.
static void quoteAndPrint(raw_ostream &Out, StringRef S) {
while (!S.empty()) {
StringRef Line;
std::tie(Line, S) = S.split("\n");
if (Line.empty())
continue;
Out << '\"';
for (int I = 0, E = Line.size(); I != E; ++I) {
if (Line[I] == '\"') {
Out << "\"\"";
} else {
Out << Line[I];
}
}
Out << "\"\n";
}
}
// Create a manifest file contents.
static std::string createManifestXml() {
std::string S;
llvm::raw_string_ostream OS(S);
// Emit the XML. Note that we do *not* verify that the XML attributes are
// syntactically correct. This is intentional for link.exe compatibility.
OS << "<?xml version=\"1.0\" standalone=\"yes\"?>\n"
<< "<assembly xmlns=\"urn:schemas-microsoft-com:asm.v1\"\n"
<< " manifestVersion=\"1.0\">\n";
if (Config->ManifestUAC) {
OS << " <trustInfo>\n"
<< " <security>\n"
<< " <requestedPrivileges>\n"
<< " <requestedExecutionLevel level=" << Config->ManifestLevel
<< " uiAccess=" << Config->ManifestUIAccess << "/>\n"
<< " </requestedPrivileges>\n"
<< " </security>\n"
<< " </trustInfo>\n";
if (!Config->ManifestDependency.empty()) {
OS << " <dependency>\n"
<< " <dependentAssembly>\n"
<< " <assemblyIdentity " << Config->ManifestDependency << " />\n"
<< " </dependentAssembly>\n"
<< " </dependency>\n";
}
}
OS << "</assembly>\n";
OS.flush();
return S;
}
// Create a resource file containing a manifest XML.
std::unique_ptr<MemoryBuffer> createManifestRes() {
// Create a temporary file for the resource script file.
SmallString<128> RCPath;
std::error_code EC = sys::fs::createTemporaryFile("tmp", "rc", RCPath);
error(EC, "cannot create a temporary file");
FileRemover RCRemover(RCPath);
// Open the temporary file for writing.
llvm::raw_fd_ostream Out(RCPath, EC, sys::fs::F_Text);
error(EC, Twine("failed to open ") + RCPath);
// Write resource script to the RC file.
Out << "#define LANG_ENGLISH 9\n"
<< "#define SUBLANG_DEFAULT 1\n"
<< "#define APP_MANIFEST " << Config->ManifestID << "\n"
<< "#define RT_MANIFEST 24\n"
<< "LANGUAGE LANG_ENGLISH, SUBLANG_DEFAULT\n"
<< "APP_MANIFEST RT_MANIFEST {\n";
quoteAndPrint(Out, createManifestXml());
Out << "}\n";
Out.close();
// Create output resource file.
SmallString<128> ResPath;
EC = sys::fs::createTemporaryFile("tmp", "res", ResPath);
error(EC, "cannot create a temporary file");
Executor E("rc.exe");
E.add("/fo");
E.add(ResPath.str());
E.add("/nologo");
E.add(RCPath.str());
E.run();
ErrorOr<std::unique_ptr<MemoryBuffer>> Ret = MemoryBuffer::getFile(ResPath);
error(Ret, Twine("Could not open ") + ResPath);
return std::move(*Ret);
}
void createSideBySideManifest() {
std::string Path = Config->ManifestFile;
if (Path == "")
Path = (Twine(Config->OutputFile) + ".manifest").str();
std::error_code EC;
llvm::raw_fd_ostream Out(Path, EC, llvm::sys::fs::F_Text);
error(EC, "failed to create manifest");
Out << createManifestXml();
}
// Parse a string in the form of
// "<name>[=<internalname>][,@ordinal[,NONAME]][,DATA][,PRIVATE]"
// or "<name>=<dllname>.<name>".
// Used for parsing /export arguments.
Export parseExport(StringRef Arg) {
Export E;
StringRef Rest;
std::tie(E.Name, Rest) = Arg.split(",");
if (E.Name.empty())
goto err;
if (E.Name.find('=') != StringRef::npos) {
StringRef X, Y;
std::tie(X, Y) = E.Name.split("=");
// If "<name>=<dllname>.<name>".
if (Y.find(".") != StringRef::npos) {
E.Name = X;
E.ForwardTo = Y;
return E;
}
E.ExtName = X;
E.Name = Y;
if (E.Name.empty())
goto err;
}
// If "<name>=<internalname>[,@ordinal[,NONAME]][,DATA][,PRIVATE]"
while (!Rest.empty()) {
StringRef Tok;
std::tie(Tok, Rest) = Rest.split(",");
if (Tok.equals_lower("noname")) {
if (E.Ordinal == 0)
goto err;
E.Noname = true;
continue;
}
if (Tok.equals_lower("data")) {
E.Data = true;
continue;
}
if (Tok.equals_lower("private")) {
E.Private = true;
continue;
}
if (Tok.startswith("@")) {
int32_t Ord;
if (Tok.substr(1).getAsInteger(0, Ord))
goto err;
if (Ord <= 0 || 65535 < Ord)
goto err;
E.Ordinal = Ord;
continue;
}
goto err;
}
return E;
err:
error(Twine("invalid /export: ") + Arg);
}
static StringRef undecorate(StringRef Sym) {
if (Config->Machine != I386)
return Sym;
return Sym.startswith("_") ? Sym.substr(1) : Sym;
}
// Performs error checking on all /export arguments.
// It also sets ordinals.
void fixupExports() {
// Symbol ordinals must be unique.
std::set<uint16_t> Ords;
for (Export &E : Config->Exports) {
if (E.Ordinal == 0)
continue;
if (!Ords.insert(E.Ordinal).second)
error("duplicate export ordinal: " + E.Name);
}
for (Export &E : Config->Exports) {
if (!E.ForwardTo.empty()) {
E.SymbolName = E.Name;
} else if (Undefined *U = cast_or_null<Undefined>(E.Sym->WeakAlias)) {
E.SymbolName = U->getName();
} else {
E.SymbolName = E.Sym->getName();
}
}
for (Export &E : Config->Exports) {
if (!E.ForwardTo.empty()) {
E.ExportName = undecorate(E.Name);
} else {
E.ExportName = undecorate(E.ExtName.empty() ? E.Name : E.ExtName);
}
}
// Uniquefy by name.
std::map<StringRef, Export *> Map;
std::vector<Export> V;
for (Export &E : Config->Exports) {
auto Pair = Map.insert(std::make_pair(E.ExportName, &E));
bool Inserted = Pair.second;
if (Inserted) {
V.push_back(E);
continue;
}
Export *Existing = Pair.first->second;
if (E == *Existing || E.Name != Existing->Name)
continue;
llvm::errs() << "warning: duplicate /export option: " << E.Name << "\n";
}
Config->Exports = std::move(V);
// Sort by name.
std::sort(Config->Exports.begin(), Config->Exports.end(),
[](const Export &A, const Export &B) {
return A.ExportName < B.ExportName;
});
}
void assignExportOrdinals() {
// Assign unique ordinals if default (= 0).
uint16_t Max = 0;
for (Export &E : Config->Exports)
Max = std::max(Max, E.Ordinal);
for (Export &E : Config->Exports)
if (E.Ordinal == 0)
E.Ordinal = ++Max;
}
// Parses a string in the form of "key=value" and check
// if value matches previous values for the same key.
void checkFailIfMismatch(StringRef Arg) {
StringRef K, V;
std::tie(K, V) = Arg.split('=');
if (K.empty() || V.empty())
error(Twine("/failifmismatch: invalid argument: ") + Arg);
StringRef Existing = Config->MustMatch[K];
if (!Existing.empty() && V != Existing)
error(Twine("/failifmismatch: mismatch detected: ") + Existing + " and " +
V + " for key " + K);
Config->MustMatch[K] = V;
}
// Convert Windows resource files (.res files) to a .obj file
// using cvtres.exe.
std::unique_ptr<MemoryBuffer>
convertResToCOFF(const std::vector<MemoryBufferRef> &MBs) {
// Create an output file path.
SmallString<128> Path;
if (llvm::sys::fs::createTemporaryFile("resource", "obj", Path))
error("Could not create temporary file");
// Execute cvtres.exe.
Executor E("cvtres.exe");
E.add("/machine:" + machineToStr(Config->Machine));
E.add("/readonly");
E.add("/nologo");
E.add("/out:" + Path);
for (MemoryBufferRef MB : MBs)
E.add(MB.getBufferIdentifier());
E.run();
ErrorOr<std::unique_ptr<MemoryBuffer>> Ret = MemoryBuffer::getFile(Path);
error(Ret, Twine("Could not open ") + Path);
return std::move(*Ret);
}
static std::string writeToTempFile(StringRef Contents) {
SmallString<128> Path;
int FD;
if (llvm::sys::fs::createTemporaryFile("tmp", "def", FD, Path)) {
llvm::errs() << "failed to create a temporary file\n";
return "";
}
llvm::raw_fd_ostream OS(FD, /*shouldClose*/ true);
OS << Contents;
return Path.str();
}
void touchFile(StringRef Path) {
int FD;
std::error_code EC = sys::fs::openFileForWrite(Path, FD, sys::fs::F_Append);
error(EC, "failed to create a file");
sys::Process::SafelyCloseFileDescriptor(FD);
}
static std::string getImplibPath() {
if (!Config->Implib.empty())
return Config->Implib;
SmallString<128> Out = StringRef(Config->OutputFile);
sys::path::replace_extension(Out, ".lib");
return Out.str();
}
static std::unique_ptr<MemoryBuffer> createEmptyImportLibrary() {
std::string S = (Twine("LIBRARY \"") +
llvm::sys::path::filename(Config->OutputFile) + "\"\n")
.str();
std::string Path1 = writeToTempFile(S);
std::string Path2 = getImplibPath();
llvm::FileRemover Remover1(Path1);
llvm::FileRemover Remover2(Path2);
Executor E("lib.exe");
E.add("/nologo");
E.add("/machine:" + machineToStr(Config->Machine));
E.add(Twine("/def:") + Path1);
E.add(Twine("/out:") + Path2);
E.run();
ErrorOr<std::unique_ptr<MemoryBuffer>> BufOrErr =
MemoryBuffer::getFile(Path2, -1, false);
error(BufOrErr, Twine("Failed to open ") + Path2);
return MemoryBuffer::getMemBufferCopy((*BufOrErr)->getBuffer());
}
static std::vector<NewArchiveIterator>
readMembers(const object::Archive &Archive) {
std::vector<NewArchiveIterator> V;
for (const auto &ChildOrErr : Archive.children()) {
error(ChildOrErr, "Archive::Child::getName failed");
const object::Archive::Child C(*ChildOrErr);
ErrorOr<StringRef> NameOrErr = C.getName();
error(NameOrErr, "Archive::Child::getName failed");
V.emplace_back(C, *NameOrErr);
}
return V;
}
// This class creates short import files which is described in
// PE/COFF spec 7. Import Library Format.
class ShortImportCreator {
public:
ShortImportCreator(object::Archive *A, StringRef S) : Parent(A), DLLName(S) {}
NewArchiveIterator create(StringRef Sym, uint16_t Ordinal,
ImportNameType NameType, bool isData) {
size_t ImpSize = DLLName.size() + Sym.size() + 2; // +2 for NULs
size_t Size = sizeof(object::ArchiveMemberHeader) +
sizeof(coff_import_header) + ImpSize;
char *Buf = Alloc.Allocate<char>(Size);
memset(Buf, 0, Size);
char *P = Buf;
// Write archive member header
auto *Hdr = reinterpret_cast<object::ArchiveMemberHeader *>(P);
P += sizeof(*Hdr);
sprintf(Hdr->Name, "%-12s", "dummy");
sprintf(Hdr->LastModified, "%-12d", 0);
sprintf(Hdr->UID, "%-6d", 0);
sprintf(Hdr->GID, "%-6d", 0);
sprintf(Hdr->AccessMode, "%-8d", 0644);
sprintf(Hdr->Size, "%-10d", int(sizeof(coff_import_header) + ImpSize));
// Write short import library.
auto *Imp = reinterpret_cast<coff_import_header *>(P);
P += sizeof(*Imp);
Imp->Sig2 = 0xFFFF;
Imp->Machine = Config->Machine;
Imp->SizeOfData = ImpSize;
if (Ordinal > 0)
Imp->OrdinalHint = Ordinal;
Imp->TypeInfo = (isData ? IMPORT_DATA : IMPORT_CODE);
Imp->TypeInfo |= NameType << 2;
// Write symbol name and DLL name.
memcpy(P, Sym.data(), Sym.size());
P += Sym.size() + 1;
memcpy(P, DLLName.data(), DLLName.size());
std::error_code EC;
object::Archive::Child C(Parent, Buf, &EC);
assert(!EC && "We created an invalid buffer");
return NewArchiveIterator(C, DLLName);
}
private:
BumpPtrAllocator Alloc;
object::Archive *Parent;
StringRef DLLName;
};
static ImportNameType getNameType(StringRef Sym, StringRef ExtName) {
if (Sym != ExtName)
return IMPORT_NAME_UNDECORATE;
if (Config->Machine == I386 && Sym.startswith("_"))
return IMPORT_NAME_NOPREFIX;
return IMPORT_NAME;
}
static std::string replace(StringRef S, StringRef From, StringRef To) {
size_t Pos = S.find(From);
assert(Pos != StringRef::npos);
return (Twine(S.substr(0, Pos)) + To + S.substr(Pos + From.size())).str();
}
// Creates an import library for a DLL. In this function, we first
// create an empty import library using lib.exe and then adds short
// import files to that file.
void writeImportLibrary() {
std::unique_ptr<MemoryBuffer> Buf = createEmptyImportLibrary();
std::error_code EC;
object::Archive Archive(Buf->getMemBufferRef(), EC);
error(EC, "Error reading an empty import file");
std::vector<NewArchiveIterator> Members = readMembers(Archive);
std::string DLLName = llvm::sys::path::filename(Config->OutputFile);
ShortImportCreator ShortImport(&Archive, DLLName);
for (Export &E : Config->Exports) {
if (E.Private)
continue;
if (E.ExtName.empty()) {
Members.push_back(ShortImport.create(
E.SymbolName, E.Ordinal, getNameType(E.SymbolName, E.Name), E.Data));
} else {
Members.push_back(ShortImport.create(
replace(E.SymbolName, E.Name, E.ExtName), E.Ordinal,
getNameType(E.SymbolName, E.Name), E.Data));
}
}
std::string Path = getImplibPath();
std::pair<StringRef, std::error_code> Result =
writeArchive(Path, Members, /*WriteSymtab*/ true, object::Archive::K_GNU,
/*Deterministic*/ true, /*Thin*/ false);
error(Result.second, Twine("Failed to write ") + Path);
}
// Create OptTable
// Create prefix string literals used in Options.td
#define PREFIX(NAME, VALUE) const char *const NAME[] = VALUE;
#include "Options.inc"
#undef PREFIX
// Create table mapping all options defined in Options.td
static const llvm::opt::OptTable::Info infoTable[] = {
#define OPTION(X1, X2, ID, KIND, GROUP, ALIAS, X6, X7, X8, X9, X10) \
{ \
X1, X2, X9, X10, OPT_##ID, llvm::opt::Option::KIND##Class, X8, X7, \
OPT_##GROUP, OPT_##ALIAS, X6 \
},
#include "Options.inc"
#undef OPTION
};
class COFFOptTable : public llvm::opt::OptTable {
public:
COFFOptTable() : OptTable(infoTable, true) {}
};
// Parses a given list of options.
llvm::opt::InputArgList ArgParser::parse(ArrayRef<const char *> ArgsArr) {
// First, replace respnose files (@<file>-style options).
std::vector<const char *> Argv = replaceResponseFiles(ArgsArr);
// Make InputArgList from string vectors.
COFFOptTable Table;
unsigned MissingIndex;
unsigned MissingCount;
llvm::opt::InputArgList Args =
Table.ParseArgs(Argv, MissingIndex, MissingCount);
// Print the real command line if response files are expanded.
if (Args.hasArg(OPT_verbose) && ArgsArr.size() != Argv.size()) {
llvm::outs() << "Command line:";
for (const char *S : Argv)
llvm::outs() << " " << S;
llvm::outs() << "\n";
}
if (MissingCount)
error(Twine("missing arg value for \"") + Args.getArgString(MissingIndex) +
"\", expected " + Twine(MissingCount) +
(MissingCount == 1 ? " argument." : " arguments."));
for (auto *Arg : Args.filtered(OPT_UNKNOWN))
llvm::errs() << "ignoring unknown argument: " << Arg->getSpelling() << "\n";
return Args;
}
llvm::opt::InputArgList ArgParser::parseLINK(ArrayRef<const char *> Args) {
// Concatenate LINK env and given arguments and parse them.
Optional<std::string> Env = Process::GetEnv("LINK");
if (!Env)
return parse(Args);
std::vector<const char *> V = tokenize(*Env);
V.insert(V.end(), Args.begin(), Args.end());
return parse(V);
}
std::vector<const char *> ArgParser::tokenize(StringRef S) {
SmallVector<const char *, 16> Tokens;
StringSaver Saver(AllocAux);
llvm::cl::TokenizeWindowsCommandLine(S, Saver, Tokens);
return std::vector<const char *>(Tokens.begin(), Tokens.end());
}
// Creates a new command line by replacing options starting with '@'
// character. '@<filename>' is replaced by the file's contents.
std::vector<const char *>
ArgParser::replaceResponseFiles(std::vector<const char *> Argv) {
SmallVector<const char *, 256> Tokens(Argv.data(), Argv.data() + Argv.size());
StringSaver Saver(AllocAux);
ExpandResponseFiles(Saver, TokenizeWindowsCommandLine, Tokens);
return std::vector<const char *>(Tokens.begin(), Tokens.end());
}
void printHelp(const char *Argv0) {
COFFOptTable Table;
Table.PrintHelp(llvm::outs(), Argv0, "LLVM Linker", false);
}
} // namespace coff
} // namespace lld
Reference in New Issue View Git Blame Copy Permalink