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diff --git a/contrib/llvm/tools/llvm-objdump/MachODump.cpp b/contrib/llvm/tools/llvm-objdump/MachODump.cpp
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+//===-- MachODump.cpp - Object file dumping utility for llvm --------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the MachO-specific dumper for llvm-objdump.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm-objdump.h"
+#include "llvm/ADT/OwningPtr.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/Triple.h"
+#include "llvm/DebugInfo/DIContext.h"
+#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCDisassembler.h"
+#include "llvm/MC/MCInst.h"
+#include "llvm/MC/MCInstPrinter.h"
+#include "llvm/MC/MCInstrAnalysis.h"
+#include "llvm/MC/MCInstrDesc.h"
+#include "llvm/MC/MCInstrInfo.h"
+#include "llvm/MC/MCRegisterInfo.h"
+#include "llvm/MC/MCSubtargetInfo.h"
+#include "llvm/Object/MachO.h"
+#include "llvm/Support/Casting.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/Format.h"
+#include "llvm/Support/GraphWriter.h"
+#include "llvm/Support/MachO.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/TargetRegistry.h"
+#include "llvm/Support/TargetSelect.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/Support/system_error.h"
+#include <algorithm>
+#include <cstring>
+using namespace llvm;
+using namespace object;
+
+static cl::opt<bool>
+ UseDbg("g", cl::desc("Print line information from debug info if available"));
+
+static cl::opt<std::string>
+ DSYMFile("dsym", cl::desc("Use .dSYM file for debug info"));
+
+static const Target *GetTarget(const MachOObjectFile *MachOObj) {
+ // Figure out the target triple.
+ if (TripleName.empty()) {
+ llvm::Triple TT("unknown-unknown-unknown");
+ TT.setArch(Triple::ArchType(MachOObj->getArch()));
+ TripleName = TT.str();
+ }
+
+ // Get the target specific parser.
+ std::string Error;
+ const Target *TheTarget = TargetRegistry::lookupTarget(TripleName, Error);
+ if (TheTarget)
+ return TheTarget;
+
+ errs() << "llvm-objdump: error: unable to get target for '" << TripleName
+ << "', see --version and --triple.\n";
+ return 0;
+}
+
+struct SymbolSorter {
+ bool operator()(const SymbolRef &A, const SymbolRef &B) {
+ SymbolRef::Type AType, BType;
+ A.getType(AType);
+ B.getType(BType);
+
+ uint64_t AAddr, BAddr;
+ if (AType != SymbolRef::ST_Function)
+ AAddr = 0;
+ else
+ A.getAddress(AAddr);
+ if (BType != SymbolRef::ST_Function)
+ BAddr = 0;
+ else
+ B.getAddress(BAddr);
+ return AAddr < BAddr;
+ }
+};
+
+// Types for the storted data in code table that is built before disassembly
+// and the predicate function to sort them.
+typedef std::pair<uint64_t, DiceRef> DiceTableEntry;
+typedef std::vector<DiceTableEntry> DiceTable;
+typedef DiceTable::iterator dice_table_iterator;
+
+static bool
+compareDiceTableEntries(const DiceTableEntry i,
+ const DiceTableEntry j) {
+ return i.first == j.first;
+}
+
+static void DumpDataInCode(const char *bytes, uint64_t Size,
+ unsigned short Kind) {
+ uint64_t Value;
+
+ switch (Kind) {
+ case MachO::DICE_KIND_DATA:
+ switch (Size) {
+ case 4:
+ Value = bytes[3] << 24 |
+ bytes[2] << 16 |
+ bytes[1] << 8 |
+ bytes[0];
+ outs() << "\t.long " << Value;
+ break;
+ case 2:
+ Value = bytes[1] << 8 |
+ bytes[0];
+ outs() << "\t.short " << Value;
+ break;
+ case 1:
+ Value = bytes[0];
+ outs() << "\t.byte " << Value;
+ break;
+ }
+ outs() << "\t@ KIND_DATA\n";
+ break;
+ case MachO::DICE_KIND_JUMP_TABLE8:
+ Value = bytes[0];
+ outs() << "\t.byte " << Value << "\t@ KIND_JUMP_TABLE8";
+ break;
+ case MachO::DICE_KIND_JUMP_TABLE16:
+ Value = bytes[1] << 8 |
+ bytes[0];
+ outs() << "\t.short " << Value << "\t@ KIND_JUMP_TABLE16";
+ break;
+ case MachO::DICE_KIND_JUMP_TABLE32:
+ Value = bytes[3] << 24 |
+ bytes[2] << 16 |
+ bytes[1] << 8 |
+ bytes[0];
+ outs() << "\t.long " << Value << "\t@ KIND_JUMP_TABLE32";
+ break;
+ default:
+ outs() << "\t@ data in code kind = " << Kind << "\n";
+ break;
+ }
+}
+
+static void
+getSectionsAndSymbols(const MachO::mach_header Header,
+ MachOObjectFile *MachOObj,
+ std::vector<SectionRef> &Sections,
+ std::vector<SymbolRef> &Symbols,
+ SmallVectorImpl<uint64_t> &FoundFns,
+ uint64_t &BaseSegmentAddress) {
+ error_code ec;
+ for (symbol_iterator SI = MachOObj->begin_symbols(),
+ SE = MachOObj->end_symbols(); SI != SE; SI.increment(ec))
+ Symbols.push_back(*SI);
+
+ for (section_iterator SI = MachOObj->begin_sections(),
+ SE = MachOObj->end_sections(); SI != SE; SI.increment(ec)) {
+ SectionRef SR = *SI;
+ StringRef SectName;
+ SR.getName(SectName);
+ Sections.push_back(*SI);
+ }
+
+ MachOObjectFile::LoadCommandInfo Command =
+ MachOObj->getFirstLoadCommandInfo();
+ bool BaseSegmentAddressSet = false;
+ for (unsigned i = 0; ; ++i) {
+ if (Command.C.cmd == MachO::LC_FUNCTION_STARTS) {
+ // We found a function starts segment, parse the addresses for later
+ // consumption.
+ MachO::linkedit_data_command LLC =
+ MachOObj->getLinkeditDataLoadCommand(Command);
+
+ MachOObj->ReadULEB128s(LLC.dataoff, FoundFns);
+ }
+ else if (Command.C.cmd == MachO::LC_SEGMENT) {
+ MachO::segment_command SLC =
+ MachOObj->getSegmentLoadCommand(Command);
+ StringRef SegName = SLC.segname;
+ if(!BaseSegmentAddressSet && SegName != "__PAGEZERO") {
+ BaseSegmentAddressSet = true;
+ BaseSegmentAddress = SLC.vmaddr;
+ }
+ }
+
+ if (i == Header.ncmds - 1)
+ break;
+ else
+ Command = MachOObj->getNextLoadCommandInfo(Command);
+ }
+}
+
+static void DisassembleInputMachO2(StringRef Filename,
+ MachOObjectFile *MachOOF);
+
+void llvm::DisassembleInputMachO(StringRef Filename) {
+ OwningPtr<MemoryBuffer> Buff;
+
+ if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buff)) {
+ errs() << "llvm-objdump: " << Filename << ": " << ec.message() << "\n";
+ return;
+ }
+
+ OwningPtr<MachOObjectFile> MachOOF(static_cast<MachOObjectFile*>(
+ ObjectFile::createMachOObjectFile(Buff.take())));
+
+ DisassembleInputMachO2(Filename, MachOOF.get());
+}
+
+static void DisassembleInputMachO2(StringRef Filename,
+ MachOObjectFile *MachOOF) {
+ const Target *TheTarget = GetTarget(MachOOF);
+ if (!TheTarget) {
+ // GetTarget prints out stuff.
+ return;
+ }
+ OwningPtr<const MCInstrInfo> InstrInfo(TheTarget->createMCInstrInfo());
+ OwningPtr<MCInstrAnalysis>
+ InstrAnalysis(TheTarget->createMCInstrAnalysis(InstrInfo.get()));
+
+ // Set up disassembler.
+ OwningPtr<const MCRegisterInfo> MRI(TheTarget->createMCRegInfo(TripleName));
+ OwningPtr<const MCAsmInfo> AsmInfo(
+ TheTarget->createMCAsmInfo(*MRI, TripleName));
+ OwningPtr<const MCSubtargetInfo>
+ STI(TheTarget->createMCSubtargetInfo(TripleName, "", ""));
+ OwningPtr<const MCDisassembler> DisAsm(TheTarget->createMCDisassembler(*STI));
+ int AsmPrinterVariant = AsmInfo->getAssemblerDialect();
+ OwningPtr<MCInstPrinter>
+ IP(TheTarget->createMCInstPrinter(AsmPrinterVariant, *AsmInfo, *InstrInfo,
+ *MRI, *STI));
+
+ if (!InstrAnalysis || !AsmInfo || !STI || !DisAsm || !IP) {
+ errs() << "error: couldn't initialize disassembler for target "
+ << TripleName << '\n';
+ return;
+ }
+
+ outs() << '\n' << Filename << ":\n\n";
+
+ MachO::mach_header Header = MachOOF->getHeader();
+
+ // FIXME: FoundFns isn't used anymore. Using symbols/LC_FUNCTION_STARTS to
+ // determine function locations will eventually go in MCObjectDisassembler.
+ // FIXME: Using the -cfg command line option, this code used to be able to
+ // annotate relocations with the referenced symbol's name, and if this was
+ // inside a __[cf]string section, the data it points to. This is now replaced
+ // by the upcoming MCSymbolizer, which needs the appropriate setup done above.
+ std::vector<SectionRef> Sections;
+ std::vector<SymbolRef> Symbols;
+ SmallVector<uint64_t, 8> FoundFns;
+ uint64_t BaseSegmentAddress;
+
+ getSectionsAndSymbols(Header, MachOOF, Sections, Symbols, FoundFns,
+ BaseSegmentAddress);
+
+ // Sort the symbols by address, just in case they didn't come in that way.
+ std::sort(Symbols.begin(), Symbols.end(), SymbolSorter());
+
+ // Build a data in code table that is sorted on by the address of each entry.
+ uint64_t BaseAddress = 0;
+ if (Header.filetype == MachO::MH_OBJECT)
+ Sections[0].getAddress(BaseAddress);
+ else
+ BaseAddress = BaseSegmentAddress;
+ DiceTable Dices;
+ error_code ec;
+ for (dice_iterator DI = MachOOF->begin_dices(), DE = MachOOF->end_dices();
+ DI != DE; DI.increment(ec)){
+ uint32_t Offset;
+ DI->getOffset(Offset);
+ Dices.push_back(std::make_pair(BaseAddress + Offset, *DI));
+ }
+ array_pod_sort(Dices.begin(), Dices.end());
+
+#ifndef NDEBUG
+ raw_ostream &DebugOut = DebugFlag ? dbgs() : nulls();
+#else
+ raw_ostream &DebugOut = nulls();
+#endif
+
+ OwningPtr<DIContext> diContext;
+ ObjectFile *DbgObj = MachOOF;
+ // Try to find debug info and set up the DIContext for it.
+ if (UseDbg) {
+ // A separate DSym file path was specified, parse it as a macho file,
+ // get the sections and supply it to the section name parsing machinery.
+ if (!DSYMFile.empty()) {
+ OwningPtr<MemoryBuffer> Buf;
+ if (error_code ec = MemoryBuffer::getFileOrSTDIN(DSYMFile, Buf)) {
+ errs() << "llvm-objdump: " << Filename << ": " << ec.message() << '\n';
+ return;
+ }
+ DbgObj = ObjectFile::createMachOObjectFile(Buf.take());
+ }
+
+ // Setup the DIContext
+ diContext.reset(DIContext::getDWARFContext(DbgObj));
+ }
+
+ for (unsigned SectIdx = 0; SectIdx != Sections.size(); SectIdx++) {
+
+ bool SectIsText = false;
+ Sections[SectIdx].isText(SectIsText);
+ if (SectIsText == false)
+ continue;
+
+ StringRef SectName;
+ if (Sections[SectIdx].getName(SectName) ||
+ SectName != "__text")
+ continue; // Skip non-text sections
+
+ DataRefImpl DR = Sections[SectIdx].getRawDataRefImpl();
+
+ StringRef SegmentName = MachOOF->getSectionFinalSegmentName(DR);
+ if (SegmentName != "__TEXT")
+ continue;
+
+ StringRef Bytes;
+ Sections[SectIdx].getContents(Bytes);
+ StringRefMemoryObject memoryObject(Bytes);
+ bool symbolTableWorked = false;
+
+ // Parse relocations.
+ std::vector<std::pair<uint64_t, SymbolRef> > Relocs;
+ error_code ec;
+ for (relocation_iterator RI = Sections[SectIdx].begin_relocations(),
+ RE = Sections[SectIdx].end_relocations(); RI != RE; RI.increment(ec)) {
+ uint64_t RelocOffset, SectionAddress;
+ RI->getOffset(RelocOffset);
+ Sections[SectIdx].getAddress(SectionAddress);
+ RelocOffset -= SectionAddress;
+
+ symbol_iterator RelocSym = RI->getSymbol();
+
+ Relocs.push_back(std::make_pair(RelocOffset, *RelocSym));
+ }
+ array_pod_sort(Relocs.begin(), Relocs.end());
+
+ // Disassemble symbol by symbol.
+ for (unsigned SymIdx = 0; SymIdx != Symbols.size(); SymIdx++) {
+ StringRef SymName;
+ Symbols[SymIdx].getName(SymName);
+
+ SymbolRef::Type ST;
+ Symbols[SymIdx].getType(ST);
+ if (ST != SymbolRef::ST_Function)
+ continue;
+
+ // Make sure the symbol is defined in this section.
+ bool containsSym = false;
+ Sections[SectIdx].containsSymbol(Symbols[SymIdx], containsSym);
+ if (!containsSym)
+ continue;
+
+ // Start at the address of the symbol relative to the section's address.
+ uint64_t SectionAddress = 0;
+ uint64_t Start = 0;
+ Sections[SectIdx].getAddress(SectionAddress);
+ Symbols[SymIdx].getAddress(Start);
+ Start -= SectionAddress;
+
+ // Stop disassembling either at the beginning of the next symbol or at
+ // the end of the section.
+ bool containsNextSym = false;
+ uint64_t NextSym = 0;
+ uint64_t NextSymIdx = SymIdx+1;
+ while (Symbols.size() > NextSymIdx) {
+ SymbolRef::Type NextSymType;
+ Symbols[NextSymIdx].getType(NextSymType);
+ if (NextSymType == SymbolRef::ST_Function) {
+ Sections[SectIdx].containsSymbol(Symbols[NextSymIdx],
+ containsNextSym);
+ Symbols[NextSymIdx].getAddress(NextSym);
+ NextSym -= SectionAddress;
+ break;
+ }
+ ++NextSymIdx;
+ }
+
+ uint64_t SectSize;
+ Sections[SectIdx].getSize(SectSize);
+ uint64_t End = containsNextSym ? NextSym : SectSize;
+ uint64_t Size;
+
+ symbolTableWorked = true;
+
+ outs() << SymName << ":\n";
+ DILineInfo lastLine;
+ for (uint64_t Index = Start; Index < End; Index += Size) {
+ MCInst Inst;
+
+ uint64_t SectAddress = 0;
+ Sections[SectIdx].getAddress(SectAddress);
+ outs() << format("%8" PRIx64 ":\t", SectAddress + Index);
+
+ // Check the data in code table here to see if this is data not an
+ // instruction to be disassembled.
+ DiceTable Dice;
+ Dice.push_back(std::make_pair(SectAddress + Index, DiceRef()));
+ dice_table_iterator DTI = std::search(Dices.begin(), Dices.end(),
+ Dice.begin(), Dice.end(),
+ compareDiceTableEntries);
+ if (DTI != Dices.end()){
+ uint16_t Length;
+ DTI->second.getLength(Length);
+ DumpBytes(StringRef(Bytes.data() + Index, Length));
+ uint16_t Kind;
+ DTI->second.getKind(Kind);
+ DumpDataInCode(Bytes.data() + Index, Length, Kind);
+ continue;
+ }
+
+ if (DisAsm->getInstruction(Inst, Size, memoryObject, Index,
+ DebugOut, nulls())) {
+ DumpBytes(StringRef(Bytes.data() + Index, Size));
+ IP->printInst(&Inst, outs(), "");
+
+ // Print debug info.
+ if (diContext) {
+ DILineInfo dli =
+ diContext->getLineInfoForAddress(SectAddress + Index);
+ // Print valid line info if it changed.
+ if (dli != lastLine && dli.getLine() != 0)
+ outs() << "\t## " << dli.getFileName() << ':'
+ << dli.getLine() << ':' << dli.getColumn();
+ lastLine = dli;
+ }
+ outs() << "\n";
+ } else {
+ errs() << "llvm-objdump: warning: invalid instruction encoding\n";
+ if (Size == 0)
+ Size = 1; // skip illegible bytes
+ }
+ }
+ }
+ if (!symbolTableWorked) {
+ // Reading the symbol table didn't work, disassemble the whole section.
+ uint64_t SectAddress;
+ Sections[SectIdx].getAddress(SectAddress);
+ uint64_t SectSize;
+ Sections[SectIdx].getSize(SectSize);
+ uint64_t InstSize;
+ for (uint64_t Index = 0; Index < SectSize; Index += InstSize) {
+ MCInst Inst;
+
+ if (DisAsm->getInstruction(Inst, InstSize, memoryObject, Index,
+ DebugOut, nulls())) {
+ outs() << format("%8" PRIx64 ":\t", SectAddress + Index);
+ DumpBytes(StringRef(Bytes.data() + Index, InstSize));
+ IP->printInst(&Inst, outs(), "");
+ outs() << "\n";
+ } else {
+ errs() << "llvm-objdump: warning: invalid instruction encoding\n";
+ if (InstSize == 0)
+ InstSize = 1; // skip illegible bytes
+ }
+ }
+ }
+ }
+}
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