std::string resolveOrDie(const URI &U, llvm::StringRef HintPath = "") {
auto Path = URI::resolve(U, HintPath);
if (!Path)
llvm_unreachable(toString(Path.takeError()).c_str());
return *Path;
}
// Returns true on error.
static bool format(StringRef FileName) {
if (!OutputXML && Inplace && FileName == "-") {
errs() << "error: cannot use -i when reading from stdin.\n";
return false;
}
// On Windows, overwriting a file with an open file mapping doesn't work,
// so read the whole file into memory when formatting in-place.
ErrorOr<std::unique_ptr<MemoryBuffer>> CodeOrErr =
!OutputXML && Inplace ? MemoryBuffer::getFileAsStream(FileName) :
MemoryBuffer::getFileOrSTDIN(FileName);
if (std::error_code EC = CodeOrErr.getError()) {
errs() << EC.message() << "\n";
return true;
}
std::unique_ptr<llvm::MemoryBuffer> Code = std::move(CodeOrErr.get());
if (Code->getBufferSize() == 0)
return false; // Empty files are formatted correctly.
std::vector<tooling::Range> Ranges;
if (fillRanges(Code.get(), Ranges))
return true;
StringRef AssumedFileName = (FileName == "-") ? AssumeFileName : FileName;
llvm::Expected<FormatStyle> FormatStyle =
getStyle(Style, AssumedFileName, FallbackStyle, Code->getBuffer());
if (!FormatStyle) {
llvm::errs() << llvm::toString(FormatStyle.takeError()) << "\n";
return true;
}
if (SortIncludes.getNumOccurrences() != 0)
FormatStyle->SortIncludes = SortIncludes;
unsigned CursorPosition = Cursor;
Replacements Replaces = sortIncludes(*FormatStyle, Code->getBuffer(), Ranges,
AssumedFileName, &CursorPosition);
auto ChangedCode = tooling::applyAllReplacements(Code->getBuffer(), Replaces);
if (!ChangedCode) {
llvm::errs() << llvm::toString(ChangedCode.takeError()) << "\n";
return true;
}
// Get new affected ranges after sorting `#includes`.
Ranges = tooling::calculateRangesAfterReplacements(Replaces, Ranges);
FormattingAttemptStatus Status;
Replacements FormatChanges = reformat(*FormatStyle, *ChangedCode, Ranges,
AssumedFileName, &Status);
Replaces = Replaces.merge(FormatChanges);
if (OutputXML) {
outs() << "<?xml version='1.0'?>\n<replacements "
"xml:space='preserve' incomplete_format='"
<< (Status.FormatComplete ? "false" : "true") << "'";
if (!Status.FormatComplete)
outs() << " line='" << Status.Line << "'";
outs() << ">\n";
if (Cursor.getNumOccurrences() != 0)
outs() << "<cursor>"
<< FormatChanges.getShiftedCodePosition(CursorPosition)
<< "</cursor>\n";
outputReplacementsXML(Replaces);
outs() << "</replacements>\n";
} else {
IntrusiveRefCntPtr<vfs::InMemoryFileSystem> InMemoryFileSystem(
new vfs::InMemoryFileSystem);
FileManager Files(FileSystemOptions(), InMemoryFileSystem);
DiagnosticsEngine Diagnostics(
IntrusiveRefCntPtr<DiagnosticIDs>(new DiagnosticIDs),
new DiagnosticOptions);
SourceManager Sources(Diagnostics, Files);
FileID ID = createInMemoryFile(AssumedFileName, Code.get(), Sources, Files,
InMemoryFileSystem.get());
Rewriter Rewrite(Sources, LangOptions());
tooling::applyAllReplacements(Replaces, Rewrite);
if (Inplace) {
if (Rewrite.overwriteChangedFiles())
return true;
} else {
if (Cursor.getNumOccurrences() != 0) {
outs() << "{ \"Cursor\": "
<< FormatChanges.getShiftedCodePosition(CursorPosition)
<< ", \"IncompleteFormat\": "
<< (Status.FormatComplete ? "false" : "true");
if (!Status.FormatComplete)
outs() << ", \"Line\": " << Status.Line;
outs() << " }\n";
}
Rewrite.getEditBuffer(ID).write(outs());
}
}
return false;
}
llvm::Expected<std::string> URI::includeSpelling(const URI &Uri) {
auto S = findSchemeByName(Uri.Scheme);
if (!S)
return S.takeError();
return S->get()->getIncludeSpelling(Uri);
}
URI URI::createFile(llvm::StringRef AbsolutePath) {
auto U = create(AbsolutePath, "file");
if (!U)
llvm_unreachable(llvm::toString(U.takeError()).c_str());
return std::move(*U);
}
llvm::Expected<IndexFileIn> readRIFF(llvm::StringRef Data) {
auto RIFF = riff::readFile(Data);
if (!RIFF)
return RIFF.takeError();
if (RIFF->Type != riff::fourCC("CdIx"))
return makeError("wrong RIFF type");
llvm::StringMap<llvm::StringRef> Chunks;
for (const auto &Chunk : RIFF->Chunks)
Chunks.try_emplace(llvm::StringRef(Chunk.ID.data(), Chunk.ID.size()),
Chunk.Data);
for (llvm::StringRef RequiredChunk : {"meta", "stri"})
if (!Chunks.count(RequiredChunk))
return makeError("missing required chunk " + RequiredChunk);
Reader Meta(Chunks.lookup("meta"));
if (Meta.consume32() != Version)
return makeError("wrong version");
auto Strings = readStringTable(Chunks.lookup("stri"));
if (!Strings)
return Strings.takeError();
IndexFileIn Result;
if (Chunks.count("srcs")) {
Reader SrcsReader(Chunks.lookup("srcs"));
Result.Sources.emplace();
while (!SrcsReader.eof()) {
auto IGN = readIncludeGraphNode(SrcsReader, Strings->Strings);
auto Entry = Result.Sources->try_emplace(IGN.URI).first;
Entry->getValue() = std::move(IGN);
// We change all the strings inside the structure to point at the keys in
// the map, since it is the only copy of the string that's going to live.
Entry->getValue().URI = Entry->getKey();
for (auto &Include : Entry->getValue().DirectIncludes)
Include = Result.Sources->try_emplace(Include).first->getKey();
}
if (SrcsReader.err())
return makeError("malformed or truncated include uri");
}
if (Chunks.count("symb")) {
Reader SymbolReader(Chunks.lookup("symb"));
SymbolSlab::Builder Symbols;
while (!SymbolReader.eof())
Symbols.insert(readSymbol(SymbolReader, Strings->Strings));
if (SymbolReader.err())
return makeError("malformed or truncated symbol");
Result.Symbols = std::move(Symbols).build();
}
if (Chunks.count("refs")) {
Reader RefsReader(Chunks.lookup("refs"));
RefSlab::Builder Refs;
while (!RefsReader.eof()) {
auto RefsBundle = readRefs(RefsReader, Strings->Strings);
for (const auto &Ref : RefsBundle.second) // FIXME: bulk insert?
Refs.insert(RefsBundle.first, Ref);
}
if (RefsReader.err())
return makeError("malformed or truncated refs");
Result.Refs = std::move(Refs).build();
}
return std::move(Result);
}
static Error getRelocationValueString(const ELFObjectFile<ELFT> *Obj,
const RelocationRef &RelRef,
SmallVectorImpl<char> &Result) {
const ELFFile<ELFT> &EF = *Obj->getELFFile();
DataRefImpl Rel = RelRef.getRawDataRefImpl();
auto SecOrErr = EF.getSection(Rel.d.a);
if (!SecOrErr)
return SecOrErr.takeError();
int64_t Addend = 0;
// If there is no Symbol associated with the relocation, we set the undef
// boolean value to 'true'. This will prevent us from calling functions that
// requires the relocation to be associated with a symbol.
//
// In SHT_REL case we would need to read the addend from section data.
// GNU objdump does not do that and we just follow for simplicity atm.
bool Undef = false;
if ((*SecOrErr)->sh_type == ELF::SHT_RELA) {
const typename ELFT::Rela *ERela = Obj->getRela(Rel);
Addend = ERela->r_addend;
Undef = ERela->getSymbol(false) == 0;
} else if ((*SecOrErr)->sh_type != ELF::SHT_REL) {
return make_error<BinaryError>();
}
// Default scheme is to print Target, as well as "+ <addend>" for nonzero
// addend. Should be acceptable for all normal purposes.
std::string FmtBuf;
raw_string_ostream Fmt(FmtBuf);
if (!Undef) {
symbol_iterator SI = RelRef.getSymbol();
const typename ELFT::Sym *Sym = Obj->getSymbol(SI->getRawDataRefImpl());
if (Sym->getType() == ELF::STT_SECTION) {
Expected<section_iterator> SymSI = SI->getSection();
if (!SymSI)
return SymSI.takeError();
const typename ELFT::Shdr *SymSec =
Obj->getSection((*SymSI)->getRawDataRefImpl());
auto SecName = EF.getSectionName(SymSec);
if (!SecName)
return SecName.takeError();
Fmt << *SecName;
} else {
Expected<StringRef> SymName = SI->getName();
if (!SymName)
return SymName.takeError();
if (Demangle)
Fmt << demangle(*SymName);
else
Fmt << *SymName;
}
} else {
Fmt << "*ABS*";
}
if (Addend != 0)
Fmt << (Addend < 0 ? "" : "+") << Addend;
Fmt.flush();
Result.append(FmtBuf.begin(), FmtBuf.end());
return Error::success();
}
template <class ELFT> void printProgramHeaders(const ELFFile<ELFT> *o) {
outs() << "Program Header:\n";
auto ProgramHeaderOrError = o->program_headers();
if (!ProgramHeaderOrError)
report_fatal_error(toString(ProgramHeaderOrError.takeError()));
for (const typename ELFT::Phdr &Phdr : *ProgramHeaderOrError) {
switch (Phdr.p_type) {
case ELF::PT_DYNAMIC:
outs() << " DYNAMIC ";
break;
case ELF::PT_GNU_EH_FRAME:
outs() << "EH_FRAME ";
break;
case ELF::PT_GNU_RELRO:
outs() << " RELRO ";
break;
case ELF::PT_GNU_STACK:
outs() << " STACK ";
break;
case ELF::PT_INTERP:
outs() << " INTERP ";
break;
case ELF::PT_LOAD:
outs() << " LOAD ";
break;
case ELF::PT_NOTE:
outs() << " NOTE ";
break;
case ELF::PT_OPENBSD_BOOTDATA:
outs() << " OPENBSD_BOOTDATA ";
break;
case ELF::PT_OPENBSD_RANDOMIZE:
outs() << " OPENBSD_RANDOMIZE ";
break;
case ELF::PT_OPENBSD_WXNEEDED:
outs() << " OPENBSD_WXNEEDED ";
break;
case ELF::PT_PHDR:
outs() << " PHDR ";
break;
case ELF::PT_TLS:
outs() << " TLS ";
break;
default:
outs() << " UNKNOWN ";
}
const char *Fmt = ELFT::Is64Bits ? "0x%016" PRIx64 " " : "0x%08" PRIx64 " ";
outs() << "off " << format(Fmt, (uint64_t)Phdr.p_offset) << "vaddr "
<< format(Fmt, (uint64_t)Phdr.p_vaddr) << "paddr "
<< format(Fmt, (uint64_t)Phdr.p_paddr)
<< format("align 2**%u\n",
countTrailingZeros<uint64_t>(Phdr.p_align))
<< " filesz " << format(Fmt, (uint64_t)Phdr.p_filesz)
<< "memsz " << format(Fmt, (uint64_t)Phdr.p_memsz) << "flags "
<< ((Phdr.p_flags & ELF::PF_R) ? "r" : "-")
<< ((Phdr.p_flags & ELF::PF_W) ? "w" : "-")
<< ((Phdr.p_flags & ELF::PF_X) ? "x" : "-") << "\n";
}
outs() << "\n";
}
