mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 03:02:36 +01:00
b0559dae5f
Currently the warning message of `llvm-strip %t.o %t.o` does not include the trailing newline. Fix this by appending a '\n'. This is the only warning llvm-objcopy and llvm-strip can issue. Reviewed By: jhenderson Differential Revision: https://reviews.llvm.org/D66475 llvm-svn: 369391
330 lines
12 KiB
C++
330 lines
12 KiB
C++
//===- llvm-objcopy.cpp ---------------------------------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm-objcopy.h"
|
|
#include "Buffer.h"
|
|
#include "CopyConfig.h"
|
|
#include "ELF/ELFObjcopy.h"
|
|
#include "COFF/COFFObjcopy.h"
|
|
#include "MachO/MachOObjcopy.h"
|
|
|
|
#include "llvm/ADT/STLExtras.h"
|
|
#include "llvm/ADT/SmallVector.h"
|
|
#include "llvm/ADT/StringRef.h"
|
|
#include "llvm/ADT/Twine.h"
|
|
#include "llvm/Object/Archive.h"
|
|
#include "llvm/Object/ArchiveWriter.h"
|
|
#include "llvm/Object/Binary.h"
|
|
#include "llvm/Object/COFF.h"
|
|
#include "llvm/Object/ELFObjectFile.h"
|
|
#include "llvm/Object/ELFTypes.h"
|
|
#include "llvm/Object/Error.h"
|
|
#include "llvm/Object/MachO.h"
|
|
#include "llvm/Option/Arg.h"
|
|
#include "llvm/Option/ArgList.h"
|
|
#include "llvm/Option/Option.h"
|
|
#include "llvm/Support/Casting.h"
|
|
#include "llvm/Support/Error.h"
|
|
#include "llvm/Support/ErrorHandling.h"
|
|
#include "llvm/Support/ErrorOr.h"
|
|
#include "llvm/Support/InitLLVM.h"
|
|
#include "llvm/Support/Memory.h"
|
|
#include "llvm/Support/Path.h"
|
|
#include "llvm/Support/Process.h"
|
|
#include "llvm/Support/WithColor.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
#include <algorithm>
|
|
#include <cassert>
|
|
#include <cstdlib>
|
|
#include <memory>
|
|
#include <string>
|
|
#include <system_error>
|
|
#include <utility>
|
|
|
|
namespace llvm {
|
|
namespace objcopy {
|
|
|
|
// The name this program was invoked as.
|
|
StringRef ToolName;
|
|
|
|
LLVM_ATTRIBUTE_NORETURN void error(Twine Message) {
|
|
WithColor::error(errs(), ToolName) << Message << "\n";
|
|
exit(1);
|
|
}
|
|
|
|
LLVM_ATTRIBUTE_NORETURN void error(Error E) {
|
|
assert(E);
|
|
std::string Buf;
|
|
raw_string_ostream OS(Buf);
|
|
logAllUnhandledErrors(std::move(E), OS);
|
|
OS.flush();
|
|
WithColor::error(errs(), ToolName) << Buf;
|
|
exit(1);
|
|
}
|
|
|
|
LLVM_ATTRIBUTE_NORETURN void reportError(StringRef File, std::error_code EC) {
|
|
assert(EC);
|
|
error(createFileError(File, EC));
|
|
}
|
|
|
|
LLVM_ATTRIBUTE_NORETURN void reportError(StringRef File, Error E) {
|
|
assert(E);
|
|
std::string Buf;
|
|
raw_string_ostream OS(Buf);
|
|
logAllUnhandledErrors(std::move(E), OS);
|
|
OS.flush();
|
|
WithColor::error(errs(), ToolName) << "'" << File << "': " << Buf;
|
|
exit(1);
|
|
}
|
|
|
|
ErrorSuccess reportWarning(Error E) {
|
|
assert(E);
|
|
WithColor::warning(errs(), ToolName) << toString(std::move(E)) << '\n';
|
|
return Error::success();
|
|
}
|
|
|
|
} // end namespace objcopy
|
|
} // end namespace llvm
|
|
|
|
using namespace llvm;
|
|
using namespace llvm::object;
|
|
using namespace llvm::objcopy;
|
|
|
|
// For regular archives this function simply calls llvm::writeArchive,
|
|
// For thin archives it writes the archive file itself as well as its members.
|
|
static Error deepWriteArchive(StringRef ArcName,
|
|
ArrayRef<NewArchiveMember> NewMembers,
|
|
bool WriteSymtab, object::Archive::Kind Kind,
|
|
bool Deterministic, bool Thin) {
|
|
if (Error E = writeArchive(ArcName, NewMembers, WriteSymtab, Kind,
|
|
Deterministic, Thin))
|
|
return createFileError(ArcName, std::move(E));
|
|
|
|
if (!Thin)
|
|
return Error::success();
|
|
|
|
for (const NewArchiveMember &Member : NewMembers) {
|
|
// Internally, FileBuffer will use the buffer created by
|
|
// FileOutputBuffer::create, for regular files (that is the case for
|
|
// deepWriteArchive) FileOutputBuffer::create will return OnDiskBuffer.
|
|
// OnDiskBuffer uses a temporary file and then renames it. So in reality
|
|
// there is no inefficiency / duplicated in-memory buffers in this case. For
|
|
// now in-memory buffers can not be completely avoided since
|
|
// NewArchiveMember still requires them even though writeArchive does not
|
|
// write them on disk.
|
|
FileBuffer FB(Member.MemberName);
|
|
if (Error E = FB.allocate(Member.Buf->getBufferSize()))
|
|
return E;
|
|
std::copy(Member.Buf->getBufferStart(), Member.Buf->getBufferEnd(),
|
|
FB.getBufferStart());
|
|
if (Error E = FB.commit())
|
|
return E;
|
|
}
|
|
return Error::success();
|
|
}
|
|
|
|
/// The function executeObjcopyOnIHex does the dispatch based on the format
|
|
/// of the output specified by the command line options.
|
|
static Error executeObjcopyOnIHex(const CopyConfig &Config, MemoryBuffer &In,
|
|
Buffer &Out) {
|
|
// TODO: support output formats other than ELF.
|
|
return elf::executeObjcopyOnIHex(Config, In, Out);
|
|
}
|
|
|
|
/// The function executeObjcopyOnRawBinary does the dispatch based on the format
|
|
/// of the output specified by the command line options.
|
|
static Error executeObjcopyOnRawBinary(const CopyConfig &Config,
|
|
MemoryBuffer &In, Buffer &Out) {
|
|
switch (Config.OutputFormat) {
|
|
case FileFormat::ELF:
|
|
// FIXME: Currently, we call elf::executeObjcopyOnRawBinary even if the
|
|
// output format is binary/ihex or it's not given. This behavior differs from
|
|
// GNU objcopy. See https://bugs.llvm.org/show_bug.cgi?id=42171 for details.
|
|
case FileFormat::Binary:
|
|
case FileFormat::IHex:
|
|
case FileFormat::Unspecified:
|
|
return elf::executeObjcopyOnRawBinary(Config, In, Out);
|
|
}
|
|
|
|
llvm_unreachable("unsupported output format");
|
|
}
|
|
|
|
/// The function executeObjcopyOnBinary does the dispatch based on the format
|
|
/// of the input binary (ELF, MachO or COFF).
|
|
static Error executeObjcopyOnBinary(const CopyConfig &Config,
|
|
object::Binary &In, Buffer &Out) {
|
|
if (auto *ELFBinary = dyn_cast<object::ELFObjectFileBase>(&In))
|
|
return elf::executeObjcopyOnBinary(Config, *ELFBinary, Out);
|
|
else if (auto *COFFBinary = dyn_cast<object::COFFObjectFile>(&In))
|
|
return coff::executeObjcopyOnBinary(Config, *COFFBinary, Out);
|
|
else if (auto *MachOBinary = dyn_cast<object::MachOObjectFile>(&In))
|
|
return macho::executeObjcopyOnBinary(Config, *MachOBinary, Out);
|
|
else
|
|
return createStringError(object_error::invalid_file_type,
|
|
"unsupported object file format");
|
|
}
|
|
|
|
static Error executeObjcopyOnArchive(const CopyConfig &Config,
|
|
const Archive &Ar) {
|
|
std::vector<NewArchiveMember> NewArchiveMembers;
|
|
Error Err = Error::success();
|
|
for (const Archive::Child &Child : Ar.children(Err)) {
|
|
Expected<StringRef> ChildNameOrErr = Child.getName();
|
|
if (!ChildNameOrErr)
|
|
return createFileError(Ar.getFileName(), ChildNameOrErr.takeError());
|
|
|
|
Expected<std::unique_ptr<Binary>> ChildOrErr = Child.getAsBinary();
|
|
if (!ChildOrErr)
|
|
return createFileError(Ar.getFileName() + "(" + *ChildNameOrErr + ")",
|
|
ChildOrErr.takeError());
|
|
|
|
MemBuffer MB(ChildNameOrErr.get());
|
|
if (Error E = executeObjcopyOnBinary(Config, *ChildOrErr->get(), MB))
|
|
return E;
|
|
|
|
Expected<NewArchiveMember> Member =
|
|
NewArchiveMember::getOldMember(Child, Config.DeterministicArchives);
|
|
if (!Member)
|
|
return createFileError(Ar.getFileName(), Member.takeError());
|
|
Member->Buf = MB.releaseMemoryBuffer();
|
|
Member->MemberName = Member->Buf->getBufferIdentifier();
|
|
NewArchiveMembers.push_back(std::move(*Member));
|
|
}
|
|
if (Err)
|
|
return createFileError(Config.InputFilename, std::move(Err));
|
|
|
|
return deepWriteArchive(Config.OutputFilename, NewArchiveMembers,
|
|
Ar.hasSymbolTable(), Ar.kind(),
|
|
Config.DeterministicArchives, Ar.isThin());
|
|
}
|
|
|
|
static Error restoreStatOnFile(StringRef Filename,
|
|
const sys::fs::file_status &Stat,
|
|
bool PreserveDates) {
|
|
int FD;
|
|
|
|
// Writing to stdout should not be treated as an error here, just
|
|
// do not set access/modification times or permissions.
|
|
if (Filename == "-")
|
|
return Error::success();
|
|
|
|
if (auto EC =
|
|
sys::fs::openFileForWrite(Filename, FD, sys::fs::CD_OpenExisting))
|
|
return createFileError(Filename, EC);
|
|
|
|
if (PreserveDates)
|
|
if (auto EC = sys::fs::setLastAccessAndModificationTime(
|
|
FD, Stat.getLastAccessedTime(), Stat.getLastModificationTime()))
|
|
return createFileError(Filename, EC);
|
|
|
|
sys::fs::file_status OStat;
|
|
if (std::error_code EC = sys::fs::status(FD, OStat))
|
|
return createFileError(Filename, EC);
|
|
if (OStat.type() == sys::fs::file_type::regular_file)
|
|
#ifdef _WIN32
|
|
if (auto EC = sys::fs::setPermissions(
|
|
Filename, static_cast<sys::fs::perms>(Stat.permissions() &
|
|
~sys::fs::getUmask())))
|
|
#else
|
|
if (auto EC = sys::fs::setPermissions(
|
|
FD, static_cast<sys::fs::perms>(Stat.permissions() &
|
|
~sys::fs::getUmask())))
|
|
#endif
|
|
return createFileError(Filename, EC);
|
|
|
|
if (auto EC = sys::Process::SafelyCloseFileDescriptor(FD))
|
|
return createFileError(Filename, EC);
|
|
|
|
return Error::success();
|
|
}
|
|
|
|
/// The function executeObjcopy does the higher level dispatch based on the type
|
|
/// of input (raw binary, archive or single object file) and takes care of the
|
|
/// format-agnostic modifications, i.e. preserving dates.
|
|
static Error executeObjcopy(const CopyConfig &Config) {
|
|
sys::fs::file_status Stat;
|
|
if (Config.InputFilename != "-") {
|
|
if (auto EC = sys::fs::status(Config.InputFilename, Stat))
|
|
return createFileError(Config.InputFilename, EC);
|
|
} else {
|
|
Stat.permissions(static_cast<sys::fs::perms>(0777));
|
|
}
|
|
|
|
typedef Error (*ProcessRawFn)(const CopyConfig &, MemoryBuffer &, Buffer &);
|
|
ProcessRawFn ProcessRaw;
|
|
switch (Config.InputFormat) {
|
|
case FileFormat::Binary:
|
|
ProcessRaw = executeObjcopyOnRawBinary;
|
|
break;
|
|
case FileFormat::IHex:
|
|
ProcessRaw = executeObjcopyOnIHex;
|
|
break;
|
|
default:
|
|
ProcessRaw = nullptr;
|
|
}
|
|
|
|
if (ProcessRaw) {
|
|
auto BufOrErr = MemoryBuffer::getFileOrSTDIN(Config.InputFilename);
|
|
if (!BufOrErr)
|
|
return createFileError(Config.InputFilename, BufOrErr.getError());
|
|
FileBuffer FB(Config.OutputFilename);
|
|
if (Error E = ProcessRaw(Config, *BufOrErr->get(), FB))
|
|
return E;
|
|
} else {
|
|
Expected<OwningBinary<llvm::object::Binary>> BinaryOrErr =
|
|
createBinary(Config.InputFilename);
|
|
if (!BinaryOrErr)
|
|
return createFileError(Config.InputFilename, BinaryOrErr.takeError());
|
|
|
|
if (Archive *Ar = dyn_cast<Archive>(BinaryOrErr.get().getBinary())) {
|
|
if (Error E = executeObjcopyOnArchive(Config, *Ar))
|
|
return E;
|
|
} else {
|
|
FileBuffer FB(Config.OutputFilename);
|
|
if (Error E = executeObjcopyOnBinary(Config,
|
|
*BinaryOrErr.get().getBinary(), FB))
|
|
return E;
|
|
}
|
|
}
|
|
|
|
if (Error E =
|
|
restoreStatOnFile(Config.OutputFilename, Stat, Config.PreserveDates))
|
|
return E;
|
|
|
|
if (!Config.SplitDWO.empty()) {
|
|
Stat.permissions(static_cast<sys::fs::perms>(0666));
|
|
if (Error E =
|
|
restoreStatOnFile(Config.SplitDWO, Stat, Config.PreserveDates))
|
|
return E;
|
|
}
|
|
|
|
return Error::success();
|
|
}
|
|
|
|
int main(int argc, char **argv) {
|
|
InitLLVM X(argc, argv);
|
|
ToolName = argv[0];
|
|
bool IsStrip = sys::path::stem(ToolName).contains("strip");
|
|
Expected<DriverConfig> DriverConfig =
|
|
IsStrip ? parseStripOptions(makeArrayRef(argv + 1, argc), reportWarning)
|
|
: parseObjcopyOptions(makeArrayRef(argv + 1, argc));
|
|
if (!DriverConfig) {
|
|
logAllUnhandledErrors(DriverConfig.takeError(),
|
|
WithColor::error(errs(), ToolName));
|
|
return 1;
|
|
}
|
|
for (const CopyConfig &CopyConfig : DriverConfig->CopyConfigs) {
|
|
if (Error E = executeObjcopy(CopyConfig)) {
|
|
logAllUnhandledErrors(std::move(E), WithColor::error(errs(), ToolName));
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|