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[lld][MachO] Re-apply r276921 with fix - initialize strings for debug string 

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llvm-svn: 276935
This commit is contained in:
Lang Hames 2016-07-27 22:55:30 +00:00
parent 03a3cec480
commit 436f7d6606
10 changed files with 1112 additions and 26 deletions
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5
lld/lib/ReaderWriter/MachO/ArchHandler_x86_64.cpp
View File

@ -463,7 +463,10 @@ ArchHandler_x86_64::getPairReferenceInfo(const normalized::Relocation &reloc1,
return ec;
uint64_t encodedAddend = (int64_t)*(const little64_t *)fixupContent;
if (inAtom == fromTarget) {
*kind = delta64;
if (inAtom->contentType() == DefinedAtom::typeCFI)
*kind = unwindFDEToFunction;
else
*kind = delta64;
*addend = encodedAddend + offsetInAtom;
} else if (inAtom == *target) {
*kind = negDelta64;

1
lld/lib/ReaderWriter/MachO/CMakeLists.txt
View File

@ -21,6 +21,7 @@ add_lld_library(lldMachO
LINK_LIBS
lldCore
lldYAML
LLVMDebugInfoDWARF
LLVMObject
LLVMSupport
${PTHREAD_LIB}

310
lld/lib/ReaderWriter/MachO/DebugInfo.h Normal file
View File

@ -0,0 +1,310 @@
//===- lib/ReaderWriter/MachO/File.h ----------------------------*- C++ -*-===//
//
// The LLVM Linker
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLD_READER_WRITER_MACHO_DEBUGINFO_H
#define LLD_READER_WRITER_MACHO_DEBUGINFO_H
#include "lld/Core/Atom.h"
#include <vector>
#include "llvm/Support/Format.h"
#include "llvm/Support/raw_ostream.h"
namespace lld {
namespace mach_o {
class DebugInfo {
public:
enum class Kind {
Dwarf,
Stabs
};
Kind kind() const { return _kind; }
void setAllocator(std::unique_ptr<llvm::BumpPtrAllocator> allocator) {
_allocator = std::move(allocator);
}
protected:
DebugInfo(Kind kind) : _kind(kind) {}
private:
std::unique_ptr<llvm::BumpPtrAllocator> _allocator;
Kind _kind;
};
struct TranslationUnitSource {
StringRef name;
StringRef path;
};
class DwarfDebugInfo : public DebugInfo {
public:
DwarfDebugInfo(TranslationUnitSource tu)
: DebugInfo(Kind::Dwarf), _tu(std::move(tu)) {}
static inline bool classof(const DebugInfo *di) {
return di->kind() == Kind::Dwarf;
}
const TranslationUnitSource &translationUnitSource() const { return _tu; }
private:
TranslationUnitSource _tu;
};
struct Stab {
Stab(const Atom* atom, uint8_t type, uint8_t other, uint16_t desc,
uint32_t value, StringRef str)
: atom(atom), type(type), other(other), desc(desc), value(value),
str(str) {}
const class Atom* atom;
uint8_t type;
uint8_t other;
uint16_t desc;
uint32_t value;
StringRef str;
};
inline raw_ostream& operator<<(raw_ostream &os, Stab &s) {
os << "Stab -- atom: " << llvm::format("%p", s.atom) << ", type: " << (uint32_t)s.type
<< ", other: " << (uint32_t)s.other << ", desc: " << s.desc << ", value: " << s.value
<< ", str: '" << s.str << "'";
return os;
}
class StabsDebugInfo : public DebugInfo {
public:
typedef std::vector<Stab> StabsList;
StabsDebugInfo(StabsList stabs)
: DebugInfo(Kind::Stabs), _stabs(std::move(stabs)) {}
static inline bool classof(const DebugInfo *di) {
return di->kind() == Kind::Stabs;
}
const StabsList& stabs() const { return _stabs; }
public:
StabsList _stabs;
};
} // end namespace mach_o
} // end namespace lld
#endif // LLD_READER_WRITER_MACHO_DEBUGINFO_H
//===- lib/ReaderWriter/MachO/File.h ----------------------------*- C++ -*-===//
//
// The LLVM Linker
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLD_READER_WRITER_MACHO_DEBUGINFO_H
#define LLD_READER_WRITER_MACHO_DEBUGINFO_H
#include "lld/Core/Atom.h"
#include <vector>
#include "llvm/Support/Format.h"
#include "llvm/Support/raw_ostream.h"
namespace lld {
namespace mach_o {
class DebugInfo {
public:
enum class Kind {
Dwarf,
Stabs
};
Kind kind() const { return _kind; }
protected:
DebugInfo(Kind kind) : _kind(kind) {}
private:
Kind _kind;
};
struct TranslationUnitSource {
StringRef name;
StringRef path;
};
class DwarfDebugInfo : public DebugInfo {
public:
DwarfDebugInfo(TranslationUnitSource tu)
: DebugInfo(Kind::Dwarf), _tu(std::move(tu)) {}
static inline bool classof(const DebugInfo *di) {
return di->kind() == Kind::Dwarf;
}
const TranslationUnitSource &translationUnitSource() const { return _tu; }
private:
TranslationUnitSource _tu;
};
struct Stab {
Stab(const Atom* atom, uint8_t type, uint8_t other, uint16_t desc,
uint32_t value, StringRef str)
: atom(atom), type(type), other(other), desc(desc), value(value),
str(str) {}
const class Atom* atom;
uint8_t type;
uint8_t other;
uint16_t desc;
uint32_t value;
StringRef str;
};
inline raw_ostream& operator<<(raw_ostream &os, Stab &s) {
os << "Stab -- atom: " << llvm::format("%p", s.atom) << ", type: " << (uint32_t)s.type
<< ", other: " << (uint32_t)s.other << ", desc: " << s.desc << ", value: " << s.value
<< ", str: '" << s.str << "'";
return os;
}
class StabsDebugInfo : public DebugInfo {
public:
typedef std::vector<Stab> StabsList;
StabsDebugInfo(StabsList stabs)
: DebugInfo(Kind::Stabs), _stabs(std::move(stabs)) {}
static inline bool classof(const DebugInfo *di) {
return di->kind() == Kind::Stabs;
}
const StabsList& stabs() const { return _stabs; }
public:
StabsList _stabs;
};
} // end namespace mach_o
} // end namespace lld
#endif // LLD_READER_WRITER_MACHO_DEBUGINFO_H
//===- lib/ReaderWriter/MachO/File.h ----------------------------*- C++ -*-===//
//
// The LLVM Linker
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLD_READER_WRITER_MACHO_DEBUGINFO_H
#define LLD_READER_WRITER_MACHO_DEBUGINFO_H
#include "lld/Core/Atom.h"
#include <vector>
#include "llvm/Support/Format.h"
#include "llvm/Support/raw_ostream.h"
namespace lld {
namespace mach_o {
class DebugInfo {
public:
enum class Kind {
Dwarf,
Stabs
};
Kind kind() const { return _kind; }
protected:
DebugInfo(Kind kind) : _kind(kind) {}
private:
Kind _kind;
};
struct TranslationUnitSource {
StringRef name;
StringRef path;
};
class DwarfDebugInfo : public DebugInfo {
public:
DwarfDebugInfo(TranslationUnitSource tu)
: DebugInfo(Kind::Dwarf), _tu(std::move(tu)) {}
static inline bool classof(const DebugInfo *di) {
return di->kind() == Kind::Dwarf;
}
const TranslationUnitSource &translationUnitSource() const { return _tu; }
private:
TranslationUnitSource _tu;
};
struct Stab {
Stab(const Atom* atom, uint8_t type, uint8_t other, uint16_t desc,
uint32_t value, StringRef str)
: atom(atom), type(type), other(other), desc(desc), value(value),
str(str) {}
const class Atom* atom;
uint8_t type;
uint8_t other;
uint16_t desc;
uint32_t value;
StringRef str;
};
inline raw_ostream& operator<<(raw_ostream &os, Stab &s) {
os << "Stab -- atom: " << llvm::format("%p", s.atom) << ", type: " << (uint32_t)s.type
<< ", other: " << (uint32_t)s.other << ", desc: " << s.desc << ", value: " << s.value
<< ", str: '" << s.str << "'";
return os;
}
class StabsDebugInfo : public DebugInfo {
public:
typedef std::vector<Stab> StabsList;
StabsDebugInfo(StabsList stabs)
: DebugInfo(Kind::Stabs), _stabs(std::move(stabs)) {}
static inline bool classof(const DebugInfo *di) {
return di->kind() == Kind::Stabs;
}
const StabsList& stabs() const { return _stabs; }
public:
StabsList _stabs;
};
} // end namespace mach_o
} // end namespace lld
#endif // LLD_READER_WRITER_MACHO_DEBUGINFO_H

16
lld/lib/ReaderWriter/MachO/File.h
View File

@ -11,11 +11,13 @@
#define LLD_READER_WRITER_MACHO_FILE_H
#include "Atoms.h"
#include "DebugInfo.h"
#include "MachONormalizedFile.h"
#include "lld/Core/SharedLibraryFile.h"
#include "lld/Core/Simple.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/Support/Format.h"
#include <unordered_map>
namespace lld {
@ -25,11 +27,15 @@ using lld::mach_o::normalized::Section;
class MachOFile : public SimpleFile {
public:
/// Real file constructor - for on-disk files.
MachOFile(std::unique_ptr<MemoryBuffer> mb, MachOLinkingContext *ctx)
: SimpleFile(mb->getBufferIdentifier(), File::kindMachObject),
_mb(std::move(mb)), _ctx(ctx) {}
MachOFile(StringRef path) : SimpleFile(path, File::kindMachObject) {}
/// Dummy file constructor - for virtual files.
MachOFile(StringRef path)
: SimpleFile(path, File::kindMachObject) {}
void addDefinedAtom(StringRef name, Atom::Scope scope,
DefinedAtom::ContentType type, DefinedAtom::Merge merge,
@ -225,6 +231,13 @@ public:
return F->kind() == File::kindMachObject;
}
void setDebugInfo(std::unique_ptr<DebugInfo> debugInfo) {
_debugInfo = std::move(debugInfo);
}
DebugInfo* debugInfo() const { return _debugInfo.get(); }
std::unique_ptr<DebugInfo> takeDebugInfo() { return std::move(_debugInfo); }
protected:
std::error_code doParse() override {
// Convert binary file to normalized mach-o.
@ -265,6 +278,7 @@ private:
MachOLinkingContext::objc_unknown;
uint32_t _swiftVersion = 0;
normalized::FileFlags _flags = llvm::MachO::MH_SUBSECTIONS_VIA_SYMBOLS;
std::unique_ptr<DebugInfo> _debugInfo;
};
class MachODylibFile : public SharedLibraryFile {

17
lld/lib/ReaderWriter/MachO/MachONormalizedFile.h
View File

@ -42,6 +42,7 @@
#ifndef LLD_READER_WRITER_MACHO_NORMALIZE_FILE_H
#define LLD_READER_WRITER_MACHO_NORMALIZE_FILE_H
#include "DebugInfo.h"
#include "lld/Core/Error.h"
#include "lld/Core/LLVM.h"
#include "lld/ReaderWriter/MachOLinkingContext.h"
@ -91,8 +92,22 @@ struct Relocation {
bool isExtern;
Hex32 value;
uint32_t symbol;
#ifndef NDEBUG
raw_ostream& operator<<(raw_ostream &OS) const {
dump(OS);
return OS;
}
void dump(raw_ostream &OS = llvm::dbgs()) const;
#endif
};
inline raw_ostream& operator<<(raw_ostream &OS, const Relocation &R) {
R.dump(OS);
return OS;
}
/// A typedef so that YAML I/O can treat this vector as a sequence.
typedef std::vector<Relocation> Relocations;
@ -226,7 +241,6 @@ struct DataInCode {
DataRegionType kind;
};
/// A typedef so that YAML I/O can encode/decode mach_header.flags.
LLVM_YAML_STRONG_TYPEDEF(uint32_t, FileFlags)
@ -242,6 +256,7 @@ struct NormalizedFile {
std::vector<Symbol> localSymbols;
std::vector<Symbol> globalSymbols;
std::vector<Symbol> undefinedSymbols;
std::vector<Symbol> stabsSymbols;
// Maps to load commands with no LINKEDIT content (final linked images only).
std::vector<DependentDylib> dependentDylibs;

10
lld/lib/ReaderWriter/MachO/MachONormalizedFileBinaryReader.cpp
View File

@ -390,12 +390,14 @@ readBinary(std::unique_ptr<MemoryBuffer> &mb,
if (sin->n_strx > strSize)
return true;
sout.name = &strings[sin->n_strx];
sout.type = (NListType)(sin->n_type & N_TYPE);
sout.type = static_cast<NListType>(sin->n_type & (N_STAB|N_TYPE));
sout.scope = (sin->n_type & (N_PEXT|N_EXT));
sout.sect = sin->n_sect;
sout.desc = sin->n_desc;
sout.value = sin->n_value;
if (sout.type == N_UNDF)
if (sin->n_type & N_STAB)
f->stabsSymbols.push_back(sout);
else if (sout.type == N_UNDF)
f->undefinedSymbols.push_back(sout);
else if (sin->n_type & N_EXT)
f->globalSymbols.push_back(sout);
@ -429,6 +431,8 @@ readBinary(std::unique_ptr<MemoryBuffer> &mb,
f->undefinedSymbols.push_back(sout);
else if (sout.scope == (SymbolScope)N_EXT)
f->globalSymbols.push_back(sout);
else if (sin->n_type & N_STAB)
f->stabsSymbols.push_back(sout);
else
f->localSymbols.push_back(sout);
}
@ -535,7 +539,7 @@ public:
loadFile(std::unique_ptr<MemoryBuffer> mb,
const Registry &registry) const override {
std::unique_ptr<File> ret =
llvm::make_unique<MachOFile>(std::move(mb), &_ctx);
llvm::make_unique<MachOFile>(std::move(mb), &_ctx);
return std::move(ret);
}

21
lld/lib/ReaderWriter/MachO/MachONormalizedFileBinaryWriter.cpp
View File

@ -789,8 +789,8 @@ llvm::Error MachOFileLayout::writeLoadCommands() {
st->cmd = LC_SYMTAB;
st->cmdsize = sizeof(symtab_command);
st->symoff = _startOfSymbols;
st->nsyms = _file.localSymbols.size() + _file.globalSymbols.size()
+ _file.undefinedSymbols.size();
st->nsyms = _file.stabsSymbols.size() + _file.localSymbols.size() +
_file.globalSymbols.size() + _file.undefinedSymbols.size();
st->stroff = _startOfSymbolStrings;
st->strsize = _endOfSymbolStrings - _startOfSymbolStrings;
if (_swap)
@ -876,8 +876,8 @@ llvm::Error MachOFileLayout::writeLoadCommands() {
st->cmd = LC_SYMTAB;
st->cmdsize = sizeof(symtab_command);
st->symoff = _startOfSymbols;
st->nsyms = _file.localSymbols.size() + _file.globalSymbols.size()
+ _file.undefinedSymbols.size();
st->nsyms = _file.stabsSymbols.size() + _file.localSymbols.size() +
_file.globalSymbols.size() + _file.undefinedSymbols.size();
st->stroff = _startOfSymbolStrings;
st->strsize = _endOfSymbolStrings - _startOfSymbolStrings;
if (_swap)
@ -890,7 +890,8 @@ llvm::Error MachOFileLayout::writeLoadCommands() {
dst->cmd = LC_DYSYMTAB;
dst->cmdsize = sizeof(dysymtab_command);
dst->ilocalsym = _symbolTableLocalsStartIndex;
dst->nlocalsym = _file.localSymbols.size();
dst->nlocalsym = _file.stabsSymbols.size() +
_file.localSymbols.size();
dst->iextdefsym = _symbolTableGlobalsStartIndex;
dst->nextdefsym = _file.globalSymbols.size();
dst->iundefsym = _symbolTableUndefinesStartIndex;
@ -1102,6 +1103,7 @@ void MachOFileLayout::writeSymbolTable() {
uint32_t symOffset = _startOfSymbols;
uint32_t strOffset = _startOfSymbolStrings;
_buffer[strOffset++] = '\0'; // Reserve n_strx offset of zero to mean no name.
appendSymbols(_file.stabsSymbols, symOffset, strOffset);
appendSymbols(_file.localSymbols, symOffset, strOffset);
appendSymbols(_file.globalSymbols, symOffset, strOffset);
appendSymbols(_file.undefinedSymbols, symOffset, strOffset);
@ -1414,10 +1416,14 @@ void MachOFileLayout::buildExportTrie() {
void MachOFileLayout::computeSymbolTableSizes() {
// MachO symbol tables have three ranges: locals, globals, and undefines
const size_t nlistSize = (_is64 ? sizeof(nlist_64) : sizeof(nlist));
_symbolTableSize = nlistSize * (_file.localSymbols.size()
_symbolTableSize = nlistSize * (_file.stabsSymbols.size()
+ _file.localSymbols.size()
+ _file.globalSymbols.size()
+ _file.undefinedSymbols.size());
_symbolStringPoolSize = 1; // Always reserve 1-byte for the empty string.
for (const Symbol &sym : _file.stabsSymbols) {
_symbolStringPoolSize += (sym.name.size()+1);
}
for (const Symbol &sym : _file.localSymbols) {
_symbolStringPoolSize += (sym.name.size()+1);
}
@ -1428,7 +1434,8 @@ void MachOFileLayout::computeSymbolTableSizes() {
_symbolStringPoolSize += (sym.name.size()+1);
}
_symbolTableLocalsStartIndex = 0;
_symbolTableGlobalsStartIndex = _file.localSymbols.size();
_symbolTableGlobalsStartIndex = _file.stabsSymbols.size() +
_file.localSymbols.size();
_symbolTableUndefinesStartIndex = _symbolTableGlobalsStartIndex
+ _file.globalSymbols.size();

175
lld/lib/ReaderWriter/MachO/MachONormalizedFileFromAtoms.cpp
View File

@ -22,6 +22,7 @@
#include "MachONormalizedFile.h"
#include "ArchHandler.h"
#include "DebugInfo.h"
#include "MachONormalizedFileBinaryUtils.h"
#include "lld/Core/Error.h"
#include "lld/Core/LLVM.h"
@ -34,6 +35,7 @@
#include "llvm/Support/MachO.h"
#include <map>
#include <system_error>
#include <unordered_set>
using llvm::StringRef;
using llvm::isa;
@ -120,6 +122,7 @@ public:
void copySectionInfo(NormalizedFile &file);
void updateSectionInfo(NormalizedFile &file);
void buildAtomToAddressMap();
llvm::Error synthesizeDebugNotes(NormalizedFile &file);
llvm::Error addSymbols(const lld::File &atomFile, NormalizedFile &file);
void addIndirectSymbols(const lld::File &atomFile, NormalizedFile &file);
void addRebaseAndBindingInfo(const lld::File &, NormalizedFile &file);
@ -201,6 +204,7 @@ private:
bool _allSourceFilesHaveMinVersions = true;
LoadCommandType _minVersionCommandType = (LoadCommandType)0;
uint32_t _minVersion = 0;
std::vector<lld::mach_o::Stab> _stabs;
};
Util::~Util() {
@ -785,6 +789,156 @@ void Util::buildAtomToAddressMap() {
}
}
llvm::Error Util::synthesizeDebugNotes(NormalizedFile &file) {
// Bail out early if we don't need to generate a debug map.
if (_ctx.debugInfoMode() == MachOLinkingContext::DebugInfoMode::noDebugMap)
return llvm::Error::success();
std::vector<const DefinedAtom*> atomsNeedingDebugNotes;
std::set<const mach_o::MachOFile*> filesWithStabs;
bool objFileHasDwarf = false;
const File *objFile = nullptr;
for (SectionInfo *sect : _sectionInfos) {
for (const AtomInfo &info : sect->atomsAndOffsets) {
if (const DefinedAtom *atom = dyn_cast<DefinedAtom>(info.atom)) {
// FIXME: No stabs/debug-notes for symbols that wouldn't be in the
// symbol table.
// FIXME: No stabs/debug-notes for kernel dtrace probes.
if (atom->contentType() == DefinedAtom::typeCFI ||
atom->contentType() == DefinedAtom::typeCString)
continue;
// Whenever we encounter a new file, update the 'objfileHasDwarf' flag.
if (&info.atom->file() != objFile) {
objFileHasDwarf = false;
if (const mach_o::MachOFile *atomFile =
dyn_cast<mach_o::MachOFile>(&info.atom->file())) {
if (atomFile->debugInfo()) {
if (isa<mach_o::DwarfDebugInfo>(atomFile->debugInfo()))
objFileHasDwarf = true;
else if (isa<mach_o::StabsDebugInfo>(atomFile->debugInfo()))
filesWithStabs.insert(atomFile);
}
}
}
// If this atom is from a file that needs dwarf, add it to the list.
if (objFileHasDwarf)
atomsNeedingDebugNotes.push_back(info.atom);
}
}
}
// Sort atoms needing debug notes by file ordinal, then atom ordinal.
std::sort(atomsNeedingDebugNotes.begin(), atomsNeedingDebugNotes.end(),
[](const DefinedAtom *lhs, const DefinedAtom *rhs) {
if (lhs->file().ordinal() != rhs->file().ordinal())
return (lhs->file().ordinal() < rhs->file().ordinal());
return (lhs->ordinal() < rhs->ordinal());
});
// FIXME: Handle <rdar://problem/17689030>: Add -add_ast_path option to \
// linker which add N_AST stab entry to output
// See OutputFile::synthesizeDebugNotes in ObjectFile.cpp in ld64.
StringRef oldFileName = "";
StringRef oldDirPath = "";
bool wroteStartSO = false;
std::unordered_set<std::string> seenFiles;
for (const DefinedAtom *atom : atomsNeedingDebugNotes) {
const auto &atomFile = cast<mach_o::MachOFile>(atom->file());
assert(dyn_cast_or_null<lld::mach_o::DwarfDebugInfo>(atomFile.debugInfo())
&& "file for atom needing debug notes does not contain dwarf");
auto &dwarf = cast<lld::mach_o::DwarfDebugInfo>(*atomFile.debugInfo());
auto &tu = dwarf.translationUnitSource();
StringRef newFileName = tu.name;
StringRef newDirPath = tu.path;
// Add an SO whenever the TU source file changes.
if (newFileName != oldFileName || newDirPath != oldDirPath) {
// Translation unit change, emit ending SO
if (oldFileName != "")
_stabs.push_back(mach_o::Stab(nullptr, N_SO, 1, 0, 0, ""));
oldFileName = newFileName;
oldDirPath = newDirPath;
// If newDirPath doesn't end with a '/' we need to add one:
if (newDirPath.back() != '/') {
std::string *p = file.ownedAllocations.Allocate<std::string>();
new (p) std::string();
*p = (newDirPath + "/").str();
newDirPath = *p;
}
// New translation unit, emit start SOs:
_stabs.push_back(mach_o::Stab(nullptr, N_SO, 0, 0, 0, newDirPath));
_stabs.push_back(mach_o::Stab(nullptr, N_SO, 0, 0, 0, newFileName));
// Synthesize OSO for start of file.
std::string *fullPath = file.ownedAllocations.Allocate<std::string>();
new (fullPath) std::string();
{
SmallString<1024> pathBuf(atomFile.path());
if (auto EC = llvm::sys::fs::make_absolute(pathBuf))
return llvm::errorCodeToError(EC);
*fullPath = pathBuf.str();
}
// Get mod time.
uint32_t modTime = 0;
llvm::sys::fs::file_status stat;
if (!llvm::sys::fs::status(*fullPath, stat))
if (llvm::sys::fs::exists(stat))
modTime = stat.getLastModificationTime().toEpochTime();
_stabs.push_back(mach_o::Stab(nullptr, N_OSO, _ctx.getCPUSubType(), 1,
modTime, *fullPath));
// <rdar://problem/6337329> linker should put cpusubtype in n_sect field
// of nlist entry for N_OSO debug note entries.
wroteStartSO = true;
}
if (atom->contentType() == DefinedAtom::typeCode) {
// Synthesize BNSYM and start FUN stabs.
_stabs.push_back(mach_o::Stab(atom, N_BNSYM, 1, 0, 0, ""));
_stabs.push_back(mach_o::Stab(atom, N_FUN, 1, 0, 0, atom->name()));
// Synthesize any SOL stabs needed
// FIXME: add SOL stabs.
_stabs.push_back(mach_o::Stab(nullptr, N_FUN, 0, 0,
atom->rawContent().size(), ""));
_stabs.push_back(mach_o::Stab(nullptr, N_ENSYM, 1, 0,
atom->rawContent().size(), ""));
} else {
if (atom->scope() == Atom::scopeTranslationUnit)
_stabs.push_back(mach_o::Stab(atom, N_STSYM, 1, 0, 0, atom->name()));
else
_stabs.push_back(mach_o::Stab(nullptr, N_GSYM, 1, 0, 0, atom->name()));
}
}
// Emit ending SO if necessary.
if (wroteStartSO)
_stabs.push_back(mach_o::Stab(nullptr, N_SO, 1, 0, 0, ""));
// Copy any stabs from .o file.
for (const auto *objFile : filesWithStabs) {
const auto &stabsList =
cast<mach_o::StabsDebugInfo>(objFile->debugInfo())->stabs();
for (auto &stab : stabsList) {
// FIXME: Drop stabs whose atoms have been dead-stripped.
_stabs.push_back(stab);
}
}
return llvm::Error::success();
}
uint16_t Util::descBits(const DefinedAtom* atom) {
uint16_t desc = 0;
switch (atom->merge()) {
@ -868,10 +1022,27 @@ llvm::Error Util::getSymbolTableRegion(const DefinedAtom* atom,
llvm_unreachable("atom->scope() unknown enum value");
}
llvm::Error Util::addSymbols(const lld::File &atomFile,
NormalizedFile &file) {
bool rMode = (_ctx.outputMachOType() == llvm::MachO::MH_OBJECT);
// Mach-O symbol table has three regions: locals, globals, undefs.
// Mach-O symbol table has four regions: stabs, locals, globals, undefs.
// Add all stabs.
for (auto &stab : _stabs) {
Symbol sym;
sym.type = static_cast<NListType>(stab.type);
sym.scope = 0;
sym.sect = stab.other;
sym.desc = stab.desc;
if (stab.atom)
sym.value = _atomToAddress[stab.atom];
else
sym.value = stab.value;
sym.name = stab.str;
file.stabsSymbols.push_back(sym);
}
// Add all local (non-global) symbols in address order
std::vector<AtomAndIndex> globals;
@ -1404,6 +1575,8 @@ normalizedFromAtoms(const lld::File &atomFile,
util.copySectionInfo(normFile);
util.assignAddressesToSections(normFile);
util.buildAtomToAddressMap();
if (auto err = util.synthesizeDebugNotes(normFile))
return std::move(err);
util.updateSectionInfo(normFile);
util.copySectionContent(normFile);
if (auto ec = util.addSymbols(atomFile, normFile)) {

334
lld/lib/ReaderWriter/MachO/MachONormalizedFileToAtoms.cpp
View File

@ -27,7 +27,11 @@
#include "MachONormalizedFileBinaryUtils.h"
#include "lld/Core/Error.h"
#include "lld/Core/LLVM.h"
#include "llvm/DebugInfo/DWARF/DWARFFormValue.h"
#include "llvm/Support/DataExtractor.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/Dwarf.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/MachO.h"
#include "llvm/Support/LEB128.h"
@ -499,7 +503,7 @@ const Section* findSectionCoveringAddress(const NormalizedFile &normalizedFile,
const MachODefinedAtom *
findAtomCoveringAddress(const NormalizedFile &normalizedFile, MachOFile &file,
uint64_t addr, Reference::Addend *addend) {
uint64_t addr, Reference::Addend &addend) {
const Section *sect = nullptr;
sect = findSectionCoveringAddress(normalizedFile, addr);
if (!sect)
@ -509,7 +513,7 @@ findAtomCoveringAddress(const NormalizedFile &normalizedFile, MachOFile &file,
uint64_t offsetInSect = addr - sect->address;
auto atom =
file.findAtomCoveringAddress(*sect, offsetInSect, &offsetInTarget);
*addend = offsetInTarget;
addend = offsetInTarget;
return atom;
}
@ -548,19 +552,23 @@ llvm::Error convertRelocs(const Section &section,
-> llvm::Error {
// Find symbol from index.
const Symbol *sym = nullptr;
uint32_t numStabs = normalizedFile.stabsSymbols.size();
uint32_t numLocal = normalizedFile.localSymbols.size();
uint32_t numGlobal = normalizedFile.globalSymbols.size();
uint32_t numUndef = normalizedFile.undefinedSymbols.size();
if (symbolIndex < numLocal) {
sym = &normalizedFile.localSymbols[symbolIndex];
} else if (symbolIndex < numLocal+numGlobal) {
sym = &normalizedFile.globalSymbols[symbolIndex-numLocal];
} else if (symbolIndex < numLocal+numGlobal+numUndef) {
sym = &normalizedFile.undefinedSymbols[symbolIndex-numLocal-numGlobal];
assert(symbolIndex >= numStabs && "Searched for stab via atomBySymbol?");
if (symbolIndex < numStabs+numLocal) {
sym = &normalizedFile.localSymbols[symbolIndex-numStabs];
} else if (symbolIndex < numStabs+numLocal+numGlobal) {
sym = &normalizedFile.globalSymbols[symbolIndex-numStabs-numLocal];
} else if (symbolIndex < numStabs+numLocal+numGlobal+numUndef) {
sym = &normalizedFile.undefinedSymbols[symbolIndex-numStabs-numLocal-
numGlobal];
} else {
return llvm::make_error<GenericError>(Twine("symbol index (")
+ Twine(symbolIndex) + ") out of range");
}
// Find atom from symbol.
if ((sym->type & N_TYPE) == N_SECT) {
if (sym->sect > normalizedFile.sections.size())
@ -685,6 +693,297 @@ bool isDebugInfoSection(const Section &section) {
return section.segmentName.equals("__DWARF");
}
static const Atom* findDefinedAtomByName(MachOFile &file, Twine name) {
std::string strName = name.str();
for (auto *atom : file.defined())
if (atom->name() == strName)
return atom;
return nullptr;
}
static StringRef copyDebugString(StringRef str, BumpPtrAllocator &alloc) {
std::string *strCopy = alloc.Allocate<std::string>();
new (strCopy) std::string();
*strCopy = str;
return *strCopy;
}
llvm::Error parseStabs(MachOFile &file,
const NormalizedFile &normalizedFile,
bool copyRefs) {
if (normalizedFile.stabsSymbols.empty())
return llvm::Error::success();
// FIXME: Kill this off when we can move to sane yaml parsing.
std::unique_ptr<BumpPtrAllocator> allocator;
if (copyRefs)
allocator = llvm::make_unique<BumpPtrAllocator>();
enum { start, inBeginEnd } state = start;
const Atom *currentAtom = nullptr;
uint64_t currentAtomAddress = 0;
StabsDebugInfo::StabsList stabsList;
for (const auto &stabSym : normalizedFile.stabsSymbols) {
Stab stab(nullptr, stabSym.type, stabSym.sect, stabSym.desc,
stabSym.value, stabSym.name);
switch (state) {
case start:
switch (static_cast<StabType>(stabSym.type)) {
case N_BNSYM:
state = inBeginEnd;
currentAtomAddress = stabSym.value;
Reference::Addend addend;
currentAtom = findAtomCoveringAddress(normalizedFile, file,
currentAtomAddress, addend);
if (addend != 0)
return llvm::make_error<GenericError>(
"Non-zero addend for BNSYM '" + stabSym.name + "' in " +
file.path());
if (currentAtom)
stab.atom = currentAtom;
else {
// FIXME: ld64 just issues a warning here - should we match that?
return llvm::make_error<GenericError>(
"can't find atom for stabs BNSYM at " +
Twine::utohexstr(stabSym.value) + " in " + file.path());
}
break;
case N_SO:
case N_OSO:
// Not associated with an atom, just copy.
if (copyRefs)
stab.str = copyDebugString(stabSym.name, *allocator);
else
stab.str = stabSym.name;
break;
case N_GSYM: {
auto colonIdx = stabSym.name.find(':');
if (colonIdx != StringRef::npos) {
StringRef name = stabSym.name.substr(0, colonIdx);
currentAtom = findDefinedAtomByName(file, "_" + name);
stab.atom = currentAtom;
if (copyRefs)
stab.str = copyDebugString(stabSym.name, *allocator);
else
stab.str = stabSym.name;
} else {
currentAtom = findDefinedAtomByName(file, stabSym.name);
stab.atom = currentAtom;
if (copyRefs)
stab.str = copyDebugString(stabSym.name, *allocator);
else
stab.str = stabSym.name;
}
if (stab.atom == nullptr)
return llvm::make_error<GenericError>(
"can't find atom for N_GSYM stabs" + stabSym.name +
" in " + file.path());
break;
}
case N_FUN:
return llvm::make_error<GenericError>(
"old-style N_FUN stab '" + stabSym.name + "' unsupported");
default:
return llvm::make_error<GenericError>(
"unrecognized stab symbol '" + stabSym.name + "'");
}
break;
case inBeginEnd:
stab.atom = currentAtom;
switch (static_cast<StabType>(stabSym.type)) {
case N_ENSYM:
state = start;
currentAtom = nullptr;
break;
case N_FUN:
// Just copy the string.
if (copyRefs)
stab.str = copyDebugString(stabSym.name, *allocator);
else
stab.str = stabSym.name;
break;
default:
return llvm::make_error<GenericError>(
"unrecognized stab symbol '" + stabSym.name + "'");
}
}
llvm::dbgs() << "Adding to stabsList: " << stab << "\n";
stabsList.push_back(stab);
}
file.setDebugInfo(llvm::make_unique<StabsDebugInfo>(std::move(stabsList)));
// FIXME: Kill this off when we fix YAML memory ownership.
file.debugInfo()->setAllocator(std::move(allocator));
return llvm::Error::success();
}
static llvm::DataExtractor
dataExtractorFromSection(const NormalizedFile &normalizedFile,
const Section &S) {
const bool is64 = MachOLinkingContext::is64Bit(normalizedFile.arch);
const bool isBig = MachOLinkingContext::isBigEndian(normalizedFile.arch);
StringRef SecData(reinterpret_cast<const char*>(S.content.data()),
S.content.size());
return llvm::DataExtractor(SecData, !isBig, is64 ? 8 : 4);
}
// FIXME: Cribbed from llvm-dwp -- should share "lightweight CU DIE
// inspection" code if possible.
static uint32_t getCUAbbrevOffset(llvm::DataExtractor abbrevData,
uint64_t abbrCode) {
uint64_t curCode;
uint32_t offset = 0;
while ((curCode = abbrevData.getULEB128(&offset)) != abbrCode) {
// Tag
abbrevData.getULEB128(&offset);
// DW_CHILDREN
abbrevData.getU8(&offset);
// Attributes
while (abbrevData.getULEB128(&offset) | abbrevData.getULEB128(&offset))
;
}
return offset;
}
// FIXME: Cribbed from llvm-dwp -- should share "lightweight CU DIE
// inspection" code if possible.
static Expected<const char *>
getIndexedString(const NormalizedFile &normalizedFile,
uint32_t form, llvm::DataExtractor infoData,
uint32_t &infoOffset, const Section &stringsSection) {
if (form == llvm::dwarf::DW_FORM_string)
return infoData.getCStr(&infoOffset);
if (form != llvm::dwarf::DW_FORM_strp)
return llvm::make_error<GenericError>(
"string field encoded without DW_FORM_strp");
uint32_t stringOffset = infoData.getU32(&infoOffset);
llvm::DataExtractor stringsData =
dataExtractorFromSection(normalizedFile, stringsSection);
return stringsData.getCStr(&stringOffset);
}
// FIXME: Cribbed from llvm-dwp -- should share "lightweight CU DIE
// inspection" code if possible.
static llvm::Expected<TranslationUnitSource>
readCompUnit(const NormalizedFile &normalizedFile,
const Section &info,
const Section &abbrev,
const Section &strings,
StringRef path) {
// FIXME: Cribbed from llvm-dwp -- should share "lightweight CU DIE
// inspection" code if possible.
uint32_t offset = 0;
auto infoData = dataExtractorFromSection(normalizedFile, info);
uint32_t length = infoData.getU32(&offset);
if (length == 0xffffffff)
infoData.getU64(&offset);
else if (length > 0xffffff00)
return llvm::make_error<GenericError>("Malformed DWARF in " + path);
uint16_t version = infoData.getU16(&offset);
if (version < 2 || version > 4)
return llvm::make_error<GenericError>("Unsupported DWARF version in " +
path);
infoData.getU32(&offset); // Abbrev offset (should be zero)
uint8_t addrSize = infoData.getU8(&offset);
uint32_t abbrCode = infoData.getULEB128(&offset);
auto abbrevData = dataExtractorFromSection(normalizedFile, abbrev);
uint32_t abbrevOffset = getCUAbbrevOffset(abbrevData, abbrCode);
uint64_t tag = abbrevData.getULEB128(&abbrevOffset);
if (tag != llvm::dwarf::DW_TAG_compile_unit)
return llvm::make_error<GenericError>("top level DIE is not a compile unit");
// DW_CHILDREN
abbrevData.getU8(&abbrevOffset);
uint32_t name;
uint32_t form;
TranslationUnitSource tu;
while ((name = abbrevData.getULEB128(&abbrevOffset)) |
(form = abbrevData.getULEB128(&abbrevOffset)) &&
(name != 0 || form != 0)) {
switch (name) {
case llvm::dwarf::DW_AT_name: {
if (auto eName = getIndexedString(normalizedFile, form, infoData, offset,
strings))
tu.name = *eName;
else
return eName.takeError();
break;
}
case llvm::dwarf::DW_AT_comp_dir: {
if (auto eName = getIndexedString(normalizedFile, form, infoData, offset,
strings))
tu.path = *eName;
else
return eName.takeError();
break;
}
default:
llvm::DWARFFormValue::skipValue(form, infoData, &offset, version,
addrSize);
}
}
return tu;
}
llvm::Error parseDebugInfo(MachOFile &file,
const NormalizedFile &normalizedFile, bool copyRefs) {
// Find the interesting debug info sections.
const Section *debugInfo = nullptr;
const Section *debugAbbrev = nullptr;
const Section *debugStrings = nullptr;
for (auto &s : normalizedFile.sections) {
if (s.segmentName == "__DWARF") {
if (s.sectionName == "__debug_info")
debugInfo = &s;
else if (s.sectionName == "__debug_abbrev")
debugAbbrev = &s;
else if (s.sectionName == "__debug_str")
debugStrings = &s;
}
}
if (!debugInfo)
return parseStabs(file, normalizedFile, copyRefs);
if (debugInfo->content.size() == 0)
return llvm::Error::success();
if (debugInfo->content.size() < 12)
return llvm::make_error<GenericError>("Malformed __debug_info section in " +
file.path() + ": too small");
if (!debugAbbrev)
return llvm::make_error<GenericError>("Missing __dwarf_abbrev section in " +
file.path());
if (auto tuOrErr = readCompUnit(normalizedFile, *debugInfo, *debugAbbrev,
*debugStrings, file.path())) {
// FIXME: Kill of allocator and code under 'copyRefs' when we fix YAML
// memory ownership.
std::unique_ptr<BumpPtrAllocator> allocator;
if (copyRefs) {
allocator = llvm::make_unique<BumpPtrAllocator>();
tuOrErr->name = copyDebugString(tuOrErr->name, *allocator);
tuOrErr->path = copyDebugString(tuOrErr->path, *allocator);
}
file.setDebugInfo(llvm::make_unique<DwarfDebugInfo>(std::move(*tuOrErr)));
if (copyRefs)
file.debugInfo()->setAllocator(std::move(allocator));
} else
return tuOrErr.takeError();
return llvm::Error::success();
}
static int64_t readSPtr(bool is64, bool isBig, const uint8_t *addr) {
if (is64)
return read64(addr, isBig);
@ -853,7 +1152,7 @@ static llvm::Error processCIE(const NormalizedFile &normalizedFile,
const MachODefinedAtom *func = nullptr;
Reference::Addend addend;
func = findAtomCoveringAddress(normalizedFile, file, funcAddress,
&addend);
addend);
atom->addReference(Reference::KindNamespace::mach_o, handler.kindArch(),
handler.unwindRefToPersonalityFunctionKind(),
PersonalityFunctionField, func, addend);
@ -936,7 +1235,7 @@ static llvm::Error processFDE(const NormalizedFile &normalizedFile,
}
Reference::Addend addend;
auto *target = findAtomCoveringAddress(normalizedFile, file,
targetAddress, &addend);
targetAddress, addend);
atom->addReference(Reference::KindNamespace::mach_o, handler.kindArch(),
refKind, refAddress, target, addend);
@ -1095,7 +1394,6 @@ llvm::Error parseObjCImageInfo(const Section &sect,
return llvm::Error();
}
/// Converts normalized mach-o file into an lld::File and lld::Atoms.
llvm::Expected<std::unique_ptr<lld::File>>
objectToAtoms(const NormalizedFile &normalizedFile, StringRef path,
@ -1136,10 +1434,11 @@ normalizedObjectToAtoms(MachOFile *file,
// Create atoms from each section.
for (auto &sect : normalizedFile.sections) {
DEBUG(llvm::dbgs() << "Creating atoms: "; sect.dump());
// If this is a debug-info section parse it specially.
if (isDebugInfoSection(sect))
continue;
// If the file contains an objc_image_info struct, then we should parse the
// ObjC flags and Swift version.
if (isObjCImageInfo(sect)) {
@ -1248,6 +1547,10 @@ normalizedObjectToAtoms(MachOFile *file,
for (const DefinedAtom* defAtom : file->defined()) {
reinterpret_cast<const SimpleDefinedAtom*>(defAtom)->sortReferences();
}
if (auto err = parseDebugInfo(*file, normalizedFile, copyRefs))
return err;
return llvm::Error();
}
@ -1325,6 +1628,13 @@ normalizedToAtoms(const NormalizedFile &normalizedFile, StringRef path,
}
#ifndef NDEBUG
void Relocation::dump(llvm::raw_ostream &OS) const {
OS << "Relocation (offset=" << llvm::format_hex(offset, 8, true)
<< ", scatered=" << scattered << ", type=" << type << ", length=" << length
<< ", pcrel=" << pcRel << ", isExtern=" << isExtern << ", value="
<< llvm::format_hex(value, 8, true) << ", symbol=" << symbol << ")\n";
}
void Section::dump(llvm::raw_ostream &OS) const {
OS << "Section (\"" << segmentName << ", " << sectionName << "\"";
OS << ", addr: " << llvm::format_hex(address, 16, true);

249
lld/test/mach-o/debug-syms.yaml Normal file
View File

@ -0,0 +1,249 @@
# RUN: lld -flavor darwin -arch x86_64 -o %t %s -lSystem && \
# RUN: llvm-nm -no-sort -debug-syms %t | FileCheck %s
# CHECK: 0000000000000000 - 00 0000 SO /Users/lhames/Projects/lld/lld-svn-tot/scratch/
# CHECK-NEXT: 0000000000000000 - 00 0000 SO hw.c
# CHECK-NEXT: {{[0-9a-f]+}} - 03 0001 OSO {{.*}}/test/mach-o/debug-syms.yaml
# CHECK-NEXT: 0000000100000fa0 - 01 0000 BNSYM
# CHECK-NEXT: 0000000100000fa0 - 01 0000 FUN _main
# CHECK-NEXT: 0000000000000016 - 00 0000 FUN
# CHECK-NEXT: 0000000000000016 - 01 0000 ENSYM
# CHECK-NEXT: 0000000000000000 - 01 0000 SO
--- !mach-o
arch: x86_64
file-type: MH_OBJECT
flags: [ MH_SUBSECTIONS_VIA_SYMBOLS ]
compat-version: 0.0
current-version: 0.0
has-UUID: false
OS: unknown
min-os-version-kind: LC_VERSION_MIN_MACOSX
sections:
- segment: __TEXT
section: __text
type: S_REGULAR
attributes: [ S_ATTR_PURE_INSTRUCTIONS, S_ATTR_SOME_INSTRUCTIONS ]
alignment: 16
address: 0x0000000000000000
content: [ 0x55, 0x48, 0x89, 0xE5, 0x31, 0xC0, 0xC7, 0x45,
0xFC, 0x00, 0x00, 0x00, 0x00, 0x89, 0x7D, 0xF8,
0x48, 0x89, 0x75, 0xF0, 0x5D, 0xC3 ]
- segment: __DWARF
section: __debug_str
type: S_REGULAR
attributes: [ S_ATTR_DEBUG ]
address: 0x0000000000000016
content: [ 0x41, 0x70, 0x70, 0x6C, 0x65, 0x20, 0x4C, 0x4C,
0x56, 0x4D, 0x20, 0x76, 0x65, 0x72, 0x73, 0x69,
0x6F, 0x6E, 0x20, 0x38, 0x2E, 0x30, 0x2E, 0x30,
0x20, 0x28, 0x63, 0x6C, 0x61, 0x6E, 0x67, 0x2D,
0x38, 0x30, 0x30, 0x2E, 0x30, 0x2E, 0x32, 0x34,
0x2E, 0x31, 0x29, 0x00, 0x68, 0x77, 0x2E, 0x63,
0x00, 0x2F, 0x55, 0x73, 0x65, 0x72, 0x73, 0x2F,
0x6C, 0x68, 0x61, 0x6D, 0x65, 0x73, 0x2F, 0x50,
0x72, 0x6F, 0x6A, 0x65, 0x63, 0x74, 0x73, 0x2F,
0x6C, 0x6C, 0x64, 0x2F, 0x6C, 0x6C, 0x64, 0x2D,
0x73, 0x76, 0x6E, 0x2D, 0x74, 0x6F, 0x74, 0x2F,
0x73, 0x63, 0x72, 0x61, 0x74, 0x63, 0x68, 0x00,
0x6D, 0x61, 0x69, 0x6E, 0x00, 0x69, 0x6E, 0x74,
0x00, 0x61, 0x72, 0x67, 0x63, 0x00, 0x61, 0x72,
0x67, 0x76, 0x00, 0x63, 0x68, 0x61, 0x72, 0x00 ]
- segment: __DWARF
section: __debug_loc
type: S_REGULAR
attributes: [ S_ATTR_DEBUG ]
address: 0x000000000000008E
- segment: __DWARF
section: __debug_abbrev
type: S_REGULAR
attributes: [ S_ATTR_DEBUG ]
address: 0x000000000000008E
content: [ 0x01, 0x11, 0x01, 0x25, 0x0E, 0x13, 0x05, 0x03,
0x0E, 0x10, 0x06, 0x1B, 0x0E, 0x11, 0x01, 0x12,
0x01, 0x00, 0x00, 0x02, 0x2E, 0x01, 0x11, 0x01,
0x12, 0x01, 0x40, 0x0A, 0x03, 0x0E, 0x3A, 0x0B,
0x3B, 0x0B, 0x27, 0x0C, 0x49, 0x13, 0x3F, 0x0C,
0x00, 0x00, 0x03, 0x05, 0x00, 0x02, 0x0A, 0x03,
0x0E, 0x3A, 0x0B, 0x3B, 0x0B, 0x49, 0x13, 0x00,
0x00, 0x04, 0x24, 0x00, 0x03, 0x0E, 0x3E, 0x0B,
0x0B, 0x0B, 0x00, 0x00, 0x05, 0x0F, 0x00, 0x49,
0x13, 0x00, 0x00, 0x00 ]
- segment: __DWARF
section: __debug_info
type: S_REGULAR
attributes: [ S_ATTR_DEBUG ]
address: 0x00000000000000DA
content: [ 0x7F, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
0x00, 0x00, 0x08, 0x01, 0x00, 0x00, 0x00, 0x00,
0x0C, 0x00, 0x2C, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x31, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x16, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x16,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
0x56, 0x60, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01,
0x6A, 0x00, 0x00, 0x00, 0x01, 0x03, 0x02, 0x91,
0x78, 0x69, 0x00, 0x00, 0x00, 0x01, 0x01, 0x6A,
0x00, 0x00, 0x00, 0x03, 0x02, 0x91, 0x70, 0x6E,
0x00, 0x00, 0x00, 0x01, 0x01, 0x71, 0x00, 0x00,
0x00, 0x00, 0x04, 0x65, 0x00, 0x00, 0x00, 0x05,
0x04, 0x05, 0x76, 0x00, 0x00, 0x00, 0x05, 0x7B,
0x00, 0x00, 0x00, 0x04, 0x73, 0x00, 0x00, 0x00,
0x06, 0x01, 0x00 ]
relocations:
- offset: 0x00000037
type: X86_64_RELOC_UNSIGNED
length: 3
pc-rel: false
extern: false
symbol: 1
- offset: 0x0000002F
type: X86_64_RELOC_UNSIGNED
length: 3
pc-rel: false
extern: false
symbol: 1
- offset: 0x00000026
type: X86_64_RELOC_UNSIGNED
length: 3
pc-rel: false
extern: false
symbol: 1
- offset: 0x0000001E
type: X86_64_RELOC_UNSIGNED
length: 3
pc-rel: false
extern: false
symbol: 1
- segment: __DWARF
section: __debug_ranges
type: S_REGULAR
attributes: [ S_ATTR_DEBUG ]
address: 0x000000000000015D
- segment: __DWARF
section: __debug_macinfo
type: S_REGULAR
attributes: [ S_ATTR_DEBUG ]
address: 0x000000000000015D
content: [ 0x00 ]
- segment: __DWARF
section: __apple_names
type: S_REGULAR
attributes: [ S_ATTR_DEBUG ]
address: 0x000000000000015E
content: [ 0x48, 0x53, 0x41, 0x48, 0x01, 0x00, 0x00, 0x00,
0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
0x0C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x06, 0x00,
0x00, 0x00, 0x00, 0x00, 0x6A, 0x7F, 0x9A, 0x7C,
0x2C, 0x00, 0x00, 0x00, 0x60, 0x00, 0x00, 0x00,
0x01, 0x00, 0x00, 0x00, 0x2E, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00 ]
- segment: __DWARF
section: __apple_objc
type: S_REGULAR
attributes: [ S_ATTR_DEBUG ]
address: 0x000000000000019A
content: [ 0x48, 0x53, 0x41, 0x48, 0x01, 0x00, 0x00, 0x00,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x0C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x06, 0x00,
0xFF, 0xFF, 0xFF, 0xFF ]
- segment: __DWARF
section: __apple_namespac
type: S_REGULAR
attributes: [ S_ATTR_DEBUG ]
address: 0x00000000000001BE
content: [ 0x48, 0x53, 0x41, 0x48, 0x01, 0x00, 0x00, 0x00,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x0C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x06, 0x00,
0xFF, 0xFF, 0xFF, 0xFF ]
- segment: __DWARF
section: __apple_types
type: S_REGULAR
attributes: [ S_ATTR_DEBUG ]
address: 0x00000000000001E2
content: [ 0x48, 0x53, 0x41, 0x48, 0x01, 0x00, 0x00, 0x00,
0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x7B, 0x00, 0x00, 0x00, 0x24,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00 ]
- segment: __DWARF
section: __apple_exttypes
type: S_REGULAR
attributes: [ S_ATTR_DEBUG ]
address: 0x0000000000000248
content: [ 0x48, 0x53, 0x41, 0x48, 0x01, 0x00, 0x00, 0x00,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x01, 0x00, 0x00, 0x00, 0x07, 0x00, 0x06, 0x00,
0xFF, 0xFF, 0xFF, 0xFF ]
- segment: __LD
section: __compact_unwind
type: S_REGULAR
attributes: [ S_ATTR_DEBUG ]
alignment: 8
address: 0x0000000000000270
content: [ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x16, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 ]
relocations:
- offset: 0x00000000
type: X86_64_RELOC_UNSIGNED
length: 3
pc-rel: false
extern: false
symbol: 1
- segment: __TEXT
section: __eh_frame
type: S_COALESCED
attributes: [ ]
alignment: 8
address: 0x0000000000000290
content: [ 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x01, 0x7A, 0x52, 0x00, 0x01, 0x78, 0x10, 0x01,
0x10, 0x0C, 0x07, 0x08, 0x90, 0x01, 0x00, 0x00,
0x24, 0x00, 0x00, 0x00, 0x1C, 0x00, 0x00, 0x00,
0x50, 0xFD, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0x00, 0x41, 0x0E, 0x10, 0x86, 0x02, 0x43, 0x0D,
0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 ]
- segment: __DWARF
section: __debug_line
type: S_REGULAR
attributes: [ S_ATTR_DEBUG ]
address: 0x00000000000002D0
content: [ 0x37, 0x00, 0x00, 0x00, 0x02, 0x00, 0x1B, 0x00,
0x00, 0x00, 0x01, 0x01, 0xFB, 0x0E, 0x0D, 0x00,
0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x01,
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0x01, 0x05, 0x03, 0x0A, 0x08, 0x3D, 0x02, 0x02,
0x00, 0x01, 0x01 ]
relocations:
- offset: 0x00000028
type: X86_64_RELOC_UNSIGNED
length: 3
pc-rel: false
extern: false
symbol: 1
global-symbols:
- name: _main
type: N_SECT
scope: [ N_EXT ]
sect: 1
value: 0x0000000000000000
page-size: 0x00000000
...