mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-29 13:29:28 +00:00
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218454 91177308-0d34-0410-b5e6-96231b3b80d8
2828 lines
100 KiB
C++
2828 lines
100 KiB
C++
//===-- MachODump.cpp - Object file dumping utility for llvm --------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the MachO-specific dumper for llvm-objdump.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm-objdump.h"
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#include "llvm-c/Disassembler.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/ADT/Triple.h"
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#include "llvm/DebugInfo/DIContext.h"
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/MC/MCDisassembler.h"
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#include "llvm/MC/MCInst.h"
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#include "llvm/MC/MCInstPrinter.h"
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#include "llvm/MC/MCInstrAnalysis.h"
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#include "llvm/MC/MCInstrDesc.h"
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#include "llvm/MC/MCInstrInfo.h"
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#include "llvm/MC/MCRegisterInfo.h"
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#include "llvm/MC/MCSubtargetInfo.h"
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#include "llvm/Object/MachO.h"
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#include "llvm/Support/Casting.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/Endian.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/GraphWriter.h"
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#include "llvm/Support/MachO.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/FormattedStream.h"
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#include "llvm/Support/TargetRegistry.h"
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#include "llvm/Support/TargetSelect.h"
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#include "llvm/Support/raw_ostream.h"
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#include <algorithm>
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#include <cstring>
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#include <system_error>
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using namespace llvm;
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using namespace object;
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static cl::opt<bool>
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UseDbg("g", cl::desc("Print line information from debug info if available"));
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static cl::opt<std::string>
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DSYMFile("dsym", cl::desc("Use .dSYM file for debug info"));
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static cl::opt<bool>
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FullLeadingAddr("full-leading-addr",
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cl::desc("Print full leading address"));
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static cl::opt<bool>
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PrintImmHex("print-imm-hex",
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cl::desc("Use hex format for immediate values"));
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static std::string ThumbTripleName;
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static const Target *GetTarget(const MachOObjectFile *MachOObj,
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const char **McpuDefault,
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const Target **ThumbTarget) {
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// Figure out the target triple.
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if (TripleName.empty()) {
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llvm::Triple TT("unknown-unknown-unknown");
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llvm::Triple ThumbTriple = Triple();
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TT = MachOObj->getArch(McpuDefault, &ThumbTriple);
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TripleName = TT.str();
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ThumbTripleName = ThumbTriple.str();
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}
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// Get the target specific parser.
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std::string Error;
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const Target *TheTarget = TargetRegistry::lookupTarget(TripleName, Error);
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if (TheTarget && ThumbTripleName.empty())
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return TheTarget;
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*ThumbTarget = TargetRegistry::lookupTarget(ThumbTripleName, Error);
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if (*ThumbTarget)
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return TheTarget;
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errs() << "llvm-objdump: error: unable to get target for '";
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if (!TheTarget)
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errs() << TripleName;
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else
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errs() << ThumbTripleName;
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errs() << "', see --version and --triple.\n";
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return nullptr;
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}
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struct SymbolSorter {
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bool operator()(const SymbolRef &A, const SymbolRef &B) {
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SymbolRef::Type AType, BType;
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A.getType(AType);
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B.getType(BType);
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uint64_t AAddr, BAddr;
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if (AType != SymbolRef::ST_Function)
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AAddr = 0;
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else
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A.getAddress(AAddr);
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if (BType != SymbolRef::ST_Function)
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BAddr = 0;
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else
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B.getAddress(BAddr);
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return AAddr < BAddr;
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}
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};
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// Types for the storted data in code table that is built before disassembly
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// and the predicate function to sort them.
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typedef std::pair<uint64_t, DiceRef> DiceTableEntry;
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typedef std::vector<DiceTableEntry> DiceTable;
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typedef DiceTable::iterator dice_table_iterator;
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static bool
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compareDiceTableEntries(const DiceTableEntry i,
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const DiceTableEntry j) {
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return i.first == j.first;
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}
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static void DumpDataInCode(const char *bytes, uint64_t Size,
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unsigned short Kind) {
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uint64_t Value;
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switch (Kind) {
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case MachO::DICE_KIND_DATA:
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switch (Size) {
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case 4:
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Value = bytes[3] << 24 |
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bytes[2] << 16 |
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bytes[1] << 8 |
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bytes[0];
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outs() << "\t.long " << Value;
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break;
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case 2:
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Value = bytes[1] << 8 |
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bytes[0];
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outs() << "\t.short " << Value;
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break;
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case 1:
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Value = bytes[0];
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outs() << "\t.byte " << Value;
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break;
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}
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outs() << "\t@ KIND_DATA\n";
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break;
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case MachO::DICE_KIND_JUMP_TABLE8:
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Value = bytes[0];
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outs() << "\t.byte " << Value << "\t@ KIND_JUMP_TABLE8";
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break;
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case MachO::DICE_KIND_JUMP_TABLE16:
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Value = bytes[1] << 8 |
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bytes[0];
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outs() << "\t.short " << Value << "\t@ KIND_JUMP_TABLE16";
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break;
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case MachO::DICE_KIND_JUMP_TABLE32:
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Value = bytes[3] << 24 |
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bytes[2] << 16 |
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bytes[1] << 8 |
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bytes[0];
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outs() << "\t.long " << Value << "\t@ KIND_JUMP_TABLE32";
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break;
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default:
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outs() << "\t@ data in code kind = " << Kind << "\n";
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break;
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}
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}
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static void getSectionsAndSymbols(const MachO::mach_header Header,
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MachOObjectFile *MachOObj,
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std::vector<SectionRef> &Sections,
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std::vector<SymbolRef> &Symbols,
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SmallVectorImpl<uint64_t> &FoundFns,
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uint64_t &BaseSegmentAddress) {
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for (const SymbolRef &Symbol : MachOObj->symbols())
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Symbols.push_back(Symbol);
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for (const SectionRef &Section : MachOObj->sections()) {
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StringRef SectName;
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Section.getName(SectName);
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Sections.push_back(Section);
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}
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MachOObjectFile::LoadCommandInfo Command =
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MachOObj->getFirstLoadCommandInfo();
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bool BaseSegmentAddressSet = false;
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for (unsigned i = 0; ; ++i) {
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if (Command.C.cmd == MachO::LC_FUNCTION_STARTS) {
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// We found a function starts segment, parse the addresses for later
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// consumption.
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MachO::linkedit_data_command LLC =
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MachOObj->getLinkeditDataLoadCommand(Command);
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MachOObj->ReadULEB128s(LLC.dataoff, FoundFns);
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}
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else if (Command.C.cmd == MachO::LC_SEGMENT) {
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MachO::segment_command SLC =
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MachOObj->getSegmentLoadCommand(Command);
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StringRef SegName = SLC.segname;
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if(!BaseSegmentAddressSet && SegName != "__PAGEZERO") {
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BaseSegmentAddressSet = true;
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BaseSegmentAddress = SLC.vmaddr;
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}
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}
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if (i == Header.ncmds - 1)
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break;
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else
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Command = MachOObj->getNextLoadCommandInfo(Command);
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}
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}
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static void DisassembleInputMachO2(StringRef Filename,
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MachOObjectFile *MachOOF);
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void llvm::DisassembleInputMachO(StringRef Filename) {
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ErrorOr<std::unique_ptr<MemoryBuffer>> BuffOrErr =
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MemoryBuffer::getFileOrSTDIN(Filename);
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if (std::error_code EC = BuffOrErr.getError()) {
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errs() << "llvm-objdump: " << Filename << ": " << EC.message() << "\n";
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return;
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}
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std::unique_ptr<MemoryBuffer> Buff = std::move(BuffOrErr.get());
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std::unique_ptr<MachOObjectFile> MachOOF = std::move(
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ObjectFile::createMachOObjectFile(Buff.get()->getMemBufferRef()).get());
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DisassembleInputMachO2(Filename, MachOOF.get());
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}
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typedef DenseMap<uint64_t, StringRef> SymbolAddressMap;
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// The block of info used by the Symbolizer call backs.
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struct DisassembleInfo {
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bool verbose;
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MachOObjectFile *O;
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SectionRef S;
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SymbolAddressMap *AddrMap;
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};
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// SymbolizerGetOpInfo() is the operand information call back function.
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// This is called to get the symbolic information for operand(s) of an
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// instruction when it is being done. This routine does this from
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// the relocation information, symbol table, etc. That block of information
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// is a pointer to the struct DisassembleInfo that was passed when the
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// disassembler context was created and passed to back to here when
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// called back by the disassembler for instruction operands that could have
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// relocation information. The address of the instruction containing operand is
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// at the Pc parameter. The immediate value the operand has is passed in
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// op_info->Value and is at Offset past the start of the instruction and has a
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// byte Size of 1, 2 or 4. The symbolc information is returned in TagBuf is the
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// LLVMOpInfo1 struct defined in the header "llvm-c/Disassembler.h" as symbol
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// names and addends of the symbolic expression to add for the operand. The
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// value of TagType is currently 1 (for the LLVMOpInfo1 struct). If symbolic
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// information is returned then this function returns 1 else it returns 0.
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int SymbolizerGetOpInfo(void *DisInfo, uint64_t Pc, uint64_t Offset,
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uint64_t Size, int TagType, void *TagBuf) {
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struct DisassembleInfo *info = (struct DisassembleInfo *)DisInfo;
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struct LLVMOpInfo1 *op_info = (struct LLVMOpInfo1 *)TagBuf;
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unsigned int value = op_info->Value;
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// Make sure all fields returned are zero if we don't set them.
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memset((void *)op_info, '\0', sizeof(struct LLVMOpInfo1));
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op_info->Value = value;
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// If the TagType is not the value 1 which it code knows about or if no
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// verbose symbolic information is wanted then just return 0, indicating no
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// information is being returned.
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if (TagType != 1 || info->verbose == false)
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return 0;
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unsigned int Arch = info->O->getArch();
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if (Arch == Triple::x86) {
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return 0;
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} else if (Arch == Triple::x86_64) {
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if (Size != 1 && Size != 2 && Size != 4 && Size != 0)
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return 0;
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// First search the section's relocation entries (if any) for an entry
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// for this section offset.
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uint64_t sect_addr;
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info->S.getAddress(sect_addr);
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uint64_t sect_offset = (Pc + Offset) - sect_addr;
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bool reloc_found = false;
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DataRefImpl Rel;
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MachO::any_relocation_info RE;
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bool isExtern = false;
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SymbolRef Symbol;
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for (const RelocationRef &Reloc : info->S.relocations()) {
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uint64_t RelocOffset;
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Reloc.getOffset(RelocOffset);
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if (RelocOffset == sect_offset) {
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Rel = Reloc.getRawDataRefImpl();
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RE = info->O->getRelocation(Rel);
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// NOTE: Scattered relocations don't exist on x86_64.
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isExtern = info->O->getPlainRelocationExternal(RE);
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if (isExtern) {
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symbol_iterator RelocSym = Reloc.getSymbol();
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Symbol = *RelocSym;
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}
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reloc_found = true;
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break;
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}
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}
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if (reloc_found && isExtern) {
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// The Value passed in will be adjusted by the Pc if the instruction
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// adds the Pc. But for x86_64 external relocation entries the Value
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// is the offset from the external symbol.
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if (info->O->getAnyRelocationPCRel(RE))
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op_info->Value -= Pc + Offset + Size;
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StringRef SymName;
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Symbol.getName(SymName);
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const char *name = SymName.data();
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unsigned Type = info->O->getAnyRelocationType(RE);
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if (Type == MachO::X86_64_RELOC_SUBTRACTOR) {
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DataRefImpl RelNext = Rel;
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info->O->moveRelocationNext(RelNext);
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MachO::any_relocation_info RENext = info->O->getRelocation(RelNext);
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unsigned TypeNext = info->O->getAnyRelocationType(RENext);
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bool isExternNext = info->O->getPlainRelocationExternal(RENext);
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unsigned SymbolNum = info->O->getPlainRelocationSymbolNum(RENext);
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if (TypeNext == MachO::X86_64_RELOC_UNSIGNED && isExternNext) {
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op_info->SubtractSymbol.Present = 1;
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op_info->SubtractSymbol.Name = name;
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symbol_iterator RelocSymNext = info->O->getSymbolByIndex(SymbolNum);
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Symbol = *RelocSymNext;
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StringRef SymNameNext;
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Symbol.getName(SymNameNext);
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name = SymNameNext.data();
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}
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}
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// TODO: add the VariantKinds to op_info->VariantKind for relocation types
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// like: X86_64_RELOC_TLV, X86_64_RELOC_GOT_LOAD and X86_64_RELOC_GOT.
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op_info->AddSymbol.Present = 1;
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op_info->AddSymbol.Name = name;
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return 1;
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}
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// TODO:
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// Second search the external relocation entries of a fully linked image
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// (if any) for an entry that matches this segment offset.
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//uint64_t seg_offset = (Pc + Offset);
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return 0;
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} else if (Arch == Triple::arm) {
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return 0;
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} else if (Arch == Triple::aarch64) {
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return 0;
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} else {
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return 0;
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}
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}
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// GuessCstringPointer is passed the address of what might be a pointer to a
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// literal string in a cstring section. If that address is in a cstring section
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// it returns a pointer to that string. Else it returns nullptr.
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const char *GuessCstringPointer(uint64_t ReferenceValue,
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struct DisassembleInfo *info) {
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uint32_t LoadCommandCount = info->O->getHeader().ncmds;
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MachOObjectFile::LoadCommandInfo Load = info->O->getFirstLoadCommandInfo();
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for (unsigned I = 0;; ++I) {
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if (Load.C.cmd == MachO::LC_SEGMENT_64) {
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MachO::segment_command_64 Seg = info->O->getSegment64LoadCommand(Load);
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for (unsigned J = 0; J < Seg.nsects; ++J) {
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MachO::section_64 Sec = info->O->getSection64(Load, J);
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uint32_t section_type = Sec.flags & MachO::SECTION_TYPE;
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if (section_type == MachO::S_CSTRING_LITERALS &&
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ReferenceValue >= Sec.addr &&
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ReferenceValue < Sec.addr + Sec.size) {
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uint64_t sect_offset = ReferenceValue - Sec.addr;
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uint64_t object_offset = Sec.offset + sect_offset;
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StringRef MachOContents = info->O->getData();
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uint64_t object_size = MachOContents.size();
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const char *object_addr = (const char *)MachOContents.data();
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if (object_offset < object_size) {
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const char *name = object_addr + object_offset;
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return name;
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} else {
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return nullptr;
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}
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}
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}
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} else if (Load.C.cmd == MachO::LC_SEGMENT) {
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MachO::segment_command Seg = info->O->getSegmentLoadCommand(Load);
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for (unsigned J = 0; J < Seg.nsects; ++J) {
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MachO::section Sec = info->O->getSection(Load, J);
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uint32_t section_type = Sec.flags & MachO::SECTION_TYPE;
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if (section_type == MachO::S_CSTRING_LITERALS &&
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ReferenceValue >= Sec.addr &&
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ReferenceValue < Sec.addr + Sec.size) {
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uint64_t sect_offset = ReferenceValue - Sec.addr;
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uint64_t object_offset = Sec.offset + sect_offset;
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StringRef MachOContents = info->O->getData();
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uint64_t object_size = MachOContents.size();
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const char *object_addr = (const char *)MachOContents.data();
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if (object_offset < object_size) {
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const char *name = object_addr + object_offset;
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return name;
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} else {
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return nullptr;
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}
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}
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}
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}
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if (I == LoadCommandCount - 1)
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break;
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else
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Load = info->O->getNextLoadCommandInfo(Load);
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}
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return nullptr;
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}
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// GuessLiteralPointer returns a string which for the item in the Mach-O file
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// for the address passed in as ReferenceValue for printing as a comment with
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// the instruction and also returns the corresponding type of that item
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// indirectly through ReferenceType.
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//
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// If ReferenceValue is an address of literal cstring then a pointer to the
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// cstring is returned and ReferenceType is set to
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// LLVMDisassembler_ReferenceType_Out_LitPool_CstrAddr .
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//
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// TODO: other literals such as Objective-C CFStrings refs, Selector refs,
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// Message refs, Class refs and a Symbol address in a literal pool are yet
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// to be done here.
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const char *GuessLiteralPointer(uint64_t ReferenceValue, uint64_t ReferencePC,
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uint64_t *ReferenceType,
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struct DisassembleInfo *info) {
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// TODO: This rouine's code is only for an x86_64 Mach-O file for now.
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unsigned int Arch = info->O->getArch();
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if (Arch != Triple::x86_64)
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return nullptr;
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// First see if there is an external relocation entry at the ReferencePC.
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uint64_t sect_addr;
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info->S.getAddress(sect_addr);
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uint64_t sect_offset = ReferencePC - sect_addr;
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bool reloc_found = false;
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DataRefImpl Rel;
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MachO::any_relocation_info RE;
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bool isExtern = false;
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SymbolRef Symbol;
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for (const RelocationRef &Reloc : info->S.relocations()) {
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uint64_t RelocOffset;
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Reloc.getOffset(RelocOffset);
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if (RelocOffset == sect_offset) {
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Rel = Reloc.getRawDataRefImpl();
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RE = info->O->getRelocation(Rel);
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if (info->O->isRelocationScattered(RE))
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continue;
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isExtern = info->O->getPlainRelocationExternal(RE);
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if (isExtern) {
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symbol_iterator RelocSym = Reloc.getSymbol();
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Symbol = *RelocSym;
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}
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reloc_found = true;
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break;
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}
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}
|
|
// If there is an external relocation entry for a symbol in a section
|
|
// then used that symbol's value for the value of the reference.
|
|
if (reloc_found && isExtern) {
|
|
if (info->O->getAnyRelocationPCRel(RE)) {
|
|
unsigned Type = info->O->getAnyRelocationType(RE);
|
|
if (Type == MachO::X86_64_RELOC_SIGNED) {
|
|
Symbol.getAddress(ReferenceValue);
|
|
}
|
|
}
|
|
}
|
|
|
|
// TODO: the code to look for other literals such as Objective-C CFStrings
|
|
// refs, Selector refs, Message refs, Class refs will be added here.
|
|
|
|
const char *name = GuessCstringPointer(ReferenceValue, info);
|
|
if (name) {
|
|
// TODO: note when the code is added above for Selector refs and Message
|
|
// refs we will need check for that here and set the ReferenceType
|
|
// accordingly.
|
|
*ReferenceType = LLVMDisassembler_ReferenceType_Out_LitPool_CstrAddr;
|
|
return name;
|
|
}
|
|
|
|
// TODO: look for an indirect symbol with this ReferenceValue which is in
|
|
// a literal pool.
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
// SymbolizerSymbolLookUp is the symbol lookup function passed when creating
|
|
// the Symbolizer. It looks up the ReferenceValue using the info passed via the
|
|
// pointer to the struct DisassembleInfo that was passed when MCSymbolizer
|
|
// is created and returns the symbol name that matches the ReferenceValue or
|
|
// nullptr if none. The ReferenceType is passed in for the IN type of
|
|
// reference the instruction is making from the values in defined in the header
|
|
// "llvm-c/Disassembler.h". On return the ReferenceType can set to a specific
|
|
// Out type and the ReferenceName will also be set which is added as a comment
|
|
// to the disassembled instruction.
|
|
//
|
|
// If the symbol name is a C++ mangled name then the demangled name is
|
|
// returned through ReferenceName and ReferenceType is set to
|
|
// LLVMDisassembler_ReferenceType_DeMangled_Name .
|
|
//
|
|
// When this is called to get a symbol name for a branch target then the
|
|
// ReferenceType will be LLVMDisassembler_ReferenceType_In_Branch and then
|
|
// SymbolValue will be looked for in the indirect symbol table to determine if
|
|
// it is an address for a symbol stub. If so then the symbol name for that
|
|
// stub is returned indirectly through ReferenceName and then ReferenceType is
|
|
// set to LLVMDisassembler_ReferenceType_Out_SymbolStub.
|
|
//
|
|
// When this is called with an value loaded via a PC relative load then
|
|
// ReferenceType will be LLVMDisassembler_ReferenceType_In_PCrel_Load then the
|
|
// SymbolValue is checked to be an address of literal pointer, symbol pointer,
|
|
// or an Objective-C meta data reference. If so the output ReferenceType is
|
|
// set to correspond to that as well as ReferenceName.
|
|
const char *SymbolizerSymbolLookUp(void *DisInfo, uint64_t ReferenceValue,
|
|
uint64_t *ReferenceType,
|
|
uint64_t ReferencePC,
|
|
const char **ReferenceName) {
|
|
struct DisassembleInfo *info = (struct DisassembleInfo *)DisInfo;
|
|
// If no verbose symbolic information is wanted then just return nullptr.
|
|
if (info->verbose == false) {
|
|
*ReferenceName = nullptr;
|
|
*ReferenceType = LLVMDisassembler_ReferenceType_InOut_None;
|
|
return nullptr;
|
|
}
|
|
|
|
const char *SymbolName = nullptr;
|
|
StringRef name = info->AddrMap->lookup(ReferenceValue);
|
|
if (!name.empty())
|
|
SymbolName = name.data();
|
|
|
|
if (*ReferenceType == LLVMDisassembler_ReferenceType_In_PCrel_Load) {
|
|
*ReferenceName = GuessLiteralPointer(ReferenceValue, ReferencePC,
|
|
ReferenceType, info);
|
|
if (*ReferenceName == nullptr)
|
|
*ReferenceType = LLVMDisassembler_ReferenceType_InOut_None;
|
|
// TODO: other types of references to be added.
|
|
} else {
|
|
*ReferenceName = nullptr;
|
|
*ReferenceType = LLVMDisassembler_ReferenceType_InOut_None;
|
|
}
|
|
|
|
return SymbolName;
|
|
}
|
|
|
|
//
|
|
// This is the memory object used by DisAsm->getInstruction() which has its
|
|
// BasePC. This then allows the 'address' parameter to getInstruction() to
|
|
// be the actual PC of the instruction. Then when a branch dispacement is
|
|
// added to the PC of an instruction, the 'ReferenceValue' passed to the
|
|
// SymbolizerSymbolLookUp() routine is the correct target addresses. As in
|
|
// the case of a fully linked Mach-O file where a section being disassembled
|
|
// generally not linked at address zero.
|
|
//
|
|
class DisasmMemoryObject : public MemoryObject {
|
|
const uint8_t *Bytes;
|
|
uint64_t Size;
|
|
uint64_t BasePC;
|
|
public:
|
|
DisasmMemoryObject(const uint8_t *bytes, uint64_t size, uint64_t basePC) :
|
|
Bytes(bytes), Size(size), BasePC(basePC) {}
|
|
|
|
uint64_t getBase() const override { return BasePC; }
|
|
uint64_t getExtent() const override { return Size; }
|
|
|
|
int readByte(uint64_t Addr, uint8_t *Byte) const override {
|
|
if (Addr - BasePC >= Size)
|
|
return -1;
|
|
*Byte = Bytes[Addr - BasePC];
|
|
return 0;
|
|
}
|
|
};
|
|
|
|
/// \brief Emits the comments that are stored in the CommentStream.
|
|
/// Each comment in the CommentStream must end with a newline.
|
|
static void emitComments(raw_svector_ostream &CommentStream,
|
|
SmallString<128> &CommentsToEmit,
|
|
formatted_raw_ostream &FormattedOS,
|
|
const MCAsmInfo &MAI) {
|
|
// Flush the stream before taking its content.
|
|
CommentStream.flush();
|
|
StringRef Comments = CommentsToEmit.str();
|
|
// Get the default information for printing a comment.
|
|
const char *CommentBegin = MAI.getCommentString();
|
|
unsigned CommentColumn = MAI.getCommentColumn();
|
|
bool IsFirst = true;
|
|
while (!Comments.empty()) {
|
|
if (!IsFirst)
|
|
FormattedOS << '\n';
|
|
// Emit a line of comments.
|
|
FormattedOS.PadToColumn(CommentColumn);
|
|
size_t Position = Comments.find('\n');
|
|
FormattedOS << CommentBegin << ' ' << Comments.substr(0, Position);
|
|
// Move after the newline character.
|
|
Comments = Comments.substr(Position + 1);
|
|
IsFirst = false;
|
|
}
|
|
FormattedOS.flush();
|
|
|
|
// Tell the comment stream that the vector changed underneath it.
|
|
CommentsToEmit.clear();
|
|
CommentStream.resync();
|
|
}
|
|
|
|
static void DisassembleInputMachO2(StringRef Filename,
|
|
MachOObjectFile *MachOOF) {
|
|
const char *McpuDefault = nullptr;
|
|
const Target *ThumbTarget = nullptr;
|
|
const Target *TheTarget = GetTarget(MachOOF, &McpuDefault, &ThumbTarget);
|
|
if (!TheTarget) {
|
|
// GetTarget prints out stuff.
|
|
return;
|
|
}
|
|
if (MCPU.empty() && McpuDefault)
|
|
MCPU = McpuDefault;
|
|
|
|
std::unique_ptr<const MCInstrInfo> InstrInfo(TheTarget->createMCInstrInfo());
|
|
std::unique_ptr<MCInstrAnalysis> InstrAnalysis(
|
|
TheTarget->createMCInstrAnalysis(InstrInfo.get()));
|
|
std::unique_ptr<const MCInstrInfo> ThumbInstrInfo;
|
|
std::unique_ptr<MCInstrAnalysis> ThumbInstrAnalysis;
|
|
if (ThumbTarget) {
|
|
ThumbInstrInfo.reset(ThumbTarget->createMCInstrInfo());
|
|
ThumbInstrAnalysis.reset(
|
|
ThumbTarget->createMCInstrAnalysis(ThumbInstrInfo.get()));
|
|
}
|
|
|
|
// Package up features to be passed to target/subtarget
|
|
std::string FeaturesStr;
|
|
if (MAttrs.size()) {
|
|
SubtargetFeatures Features;
|
|
for (unsigned i = 0; i != MAttrs.size(); ++i)
|
|
Features.AddFeature(MAttrs[i]);
|
|
FeaturesStr = Features.getString();
|
|
}
|
|
|
|
// Set up disassembler.
|
|
std::unique_ptr<const MCRegisterInfo> MRI(
|
|
TheTarget->createMCRegInfo(TripleName));
|
|
std::unique_ptr<const MCAsmInfo> AsmInfo(
|
|
TheTarget->createMCAsmInfo(*MRI, TripleName));
|
|
std::unique_ptr<const MCSubtargetInfo> STI(
|
|
TheTarget->createMCSubtargetInfo(TripleName, MCPU, FeaturesStr));
|
|
MCContext Ctx(AsmInfo.get(), MRI.get(), nullptr);
|
|
std::unique_ptr<MCDisassembler> DisAsm(
|
|
TheTarget->createMCDisassembler(*STI, Ctx));
|
|
std::unique_ptr<MCSymbolizer> Symbolizer;
|
|
struct DisassembleInfo SymbolizerInfo;
|
|
std::unique_ptr<MCRelocationInfo> RelInfo(
|
|
TheTarget->createMCRelocationInfo(TripleName, Ctx));
|
|
if (RelInfo) {
|
|
Symbolizer.reset(TheTarget->createMCSymbolizer(
|
|
TripleName, SymbolizerGetOpInfo, SymbolizerSymbolLookUp,
|
|
&SymbolizerInfo, &Ctx, RelInfo.release()));
|
|
DisAsm->setSymbolizer(std::move(Symbolizer));
|
|
}
|
|
int AsmPrinterVariant = AsmInfo->getAssemblerDialect();
|
|
std::unique_ptr<MCInstPrinter> IP(TheTarget->createMCInstPrinter(
|
|
AsmPrinterVariant, *AsmInfo, *InstrInfo, *MRI, *STI));
|
|
// Set the display preference for hex vs. decimal immediates.
|
|
IP->setPrintImmHex(PrintImmHex);
|
|
// Comment stream and backing vector.
|
|
SmallString<128> CommentsToEmit;
|
|
raw_svector_ostream CommentStream(CommentsToEmit);
|
|
IP->setCommentStream(CommentStream);
|
|
|
|
if (!InstrAnalysis || !AsmInfo || !STI || !DisAsm || !IP) {
|
|
errs() << "error: couldn't initialize disassembler for target "
|
|
<< TripleName << '\n';
|
|
return;
|
|
}
|
|
|
|
// Set up thumb disassembler.
|
|
std::unique_ptr<const MCRegisterInfo> ThumbMRI;
|
|
std::unique_ptr<const MCAsmInfo> ThumbAsmInfo;
|
|
std::unique_ptr<const MCSubtargetInfo> ThumbSTI;
|
|
std::unique_ptr<const MCDisassembler> ThumbDisAsm;
|
|
std::unique_ptr<MCInstPrinter> ThumbIP;
|
|
std::unique_ptr<MCContext> ThumbCtx;
|
|
if (ThumbTarget) {
|
|
ThumbMRI.reset(ThumbTarget->createMCRegInfo(ThumbTripleName));
|
|
ThumbAsmInfo.reset(
|
|
ThumbTarget->createMCAsmInfo(*ThumbMRI, ThumbTripleName));
|
|
ThumbSTI.reset(
|
|
ThumbTarget->createMCSubtargetInfo(ThumbTripleName, MCPU, FeaturesStr));
|
|
ThumbCtx.reset(new MCContext(ThumbAsmInfo.get(), ThumbMRI.get(), nullptr));
|
|
ThumbDisAsm.reset(ThumbTarget->createMCDisassembler(*ThumbSTI, *ThumbCtx));
|
|
// TODO: add MCSymbolizer here for the ThumbTarget like above for TheTarget.
|
|
int ThumbAsmPrinterVariant = ThumbAsmInfo->getAssemblerDialect();
|
|
ThumbIP.reset(ThumbTarget->createMCInstPrinter(
|
|
ThumbAsmPrinterVariant, *ThumbAsmInfo, *ThumbInstrInfo, *ThumbMRI,
|
|
*ThumbSTI));
|
|
// Set the display preference for hex vs. decimal immediates.
|
|
ThumbIP->setPrintImmHex(PrintImmHex);
|
|
}
|
|
|
|
if (ThumbTarget && (!ThumbInstrAnalysis || !ThumbAsmInfo || !ThumbSTI ||
|
|
!ThumbDisAsm || !ThumbIP)) {
|
|
errs() << "error: couldn't initialize disassembler for target "
|
|
<< ThumbTripleName << '\n';
|
|
return;
|
|
}
|
|
|
|
outs() << '\n' << Filename << ":\n\n";
|
|
|
|
MachO::mach_header Header = MachOOF->getHeader();
|
|
|
|
// 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;
|
|
for (dice_iterator DI = MachOOF->begin_dices(), DE = MachOOF->end_dices();
|
|
DI != DE; ++DI) {
|
|
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
|
|
|
|
std::unique_ptr<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()) {
|
|
ErrorOr<std::unique_ptr<MemoryBuffer>> BufOrErr =
|
|
MemoryBuffer::getFileOrSTDIN(DSYMFile);
|
|
if (std::error_code EC = BufOrErr.getError()) {
|
|
errs() << "llvm-objdump: " << Filename << ": " << EC.message() << '\n';
|
|
return;
|
|
}
|
|
DbgObj =
|
|
ObjectFile::createMachOObjectFile(BufOrErr.get()->getMemBufferRef())
|
|
.get()
|
|
.release();
|
|
}
|
|
|
|
// 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);
|
|
uint64_t SectAddress = 0;
|
|
Sections[SectIdx].getAddress(SectAddress);
|
|
DisasmMemoryObject MemoryObject((const uint8_t *)Bytes.data(), Bytes.size(),
|
|
SectAddress);
|
|
bool symbolTableWorked = false;
|
|
|
|
// Parse relocations.
|
|
std::vector<std::pair<uint64_t, SymbolRef>> Relocs;
|
|
for (const RelocationRef &Reloc : Sections[SectIdx].relocations()) {
|
|
uint64_t RelocOffset, SectionAddress;
|
|
Reloc.getOffset(RelocOffset);
|
|
Sections[SectIdx].getAddress(SectionAddress);
|
|
RelocOffset -= SectionAddress;
|
|
|
|
symbol_iterator RelocSym = Reloc.getSymbol();
|
|
|
|
Relocs.push_back(std::make_pair(RelocOffset, *RelocSym));
|
|
}
|
|
array_pod_sort(Relocs.begin(), Relocs.end());
|
|
|
|
// Create a map of symbol addresses to symbol names for use by
|
|
// the SymbolizerSymbolLookUp() routine.
|
|
SymbolAddressMap AddrMap;
|
|
for (const SymbolRef &Symbol : MachOOF->symbols()) {
|
|
SymbolRef::Type ST;
|
|
Symbol.getType(ST);
|
|
if (ST == SymbolRef::ST_Function || ST == SymbolRef::ST_Data ||
|
|
ST == SymbolRef::ST_Other) {
|
|
uint64_t Address;
|
|
Symbol.getAddress(Address);
|
|
StringRef SymName;
|
|
Symbol.getName(SymName);
|
|
AddrMap[Address] = SymName;
|
|
}
|
|
}
|
|
// Set up the block of info used by the Symbolizer call backs.
|
|
SymbolizerInfo.verbose = true;
|
|
SymbolizerInfo.O = MachOOF;
|
|
SymbolizerInfo.S = Sections[SectIdx];
|
|
SymbolizerInfo.AddrMap = &AddrMap;
|
|
|
|
// 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;
|
|
|
|
DataRefImpl Symb = Symbols[SymIdx].getRawDataRefImpl();
|
|
bool isThumb =
|
|
(MachOOF->getSymbolFlags(Symb) & SymbolRef::SF_Thumb) && ThumbTarget;
|
|
|
|
outs() << SymName << ":\n";
|
|
DILineInfo lastLine;
|
|
for (uint64_t Index = Start; Index < End; Index += Size) {
|
|
MCInst Inst;
|
|
|
|
uint64_t PC = SectAddress + Index;
|
|
if (FullLeadingAddr) {
|
|
if (MachOOF->is64Bit())
|
|
outs() << format("%016" PRIx64, PC);
|
|
else
|
|
outs() << format("%08" PRIx64, PC);
|
|
} else {
|
|
outs() << format("%8" PRIx64 ":", PC);
|
|
}
|
|
if (!NoShowRawInsn)
|
|
outs() << "\t";
|
|
|
|
// 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(PC, 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;
|
|
}
|
|
|
|
SmallVector<char, 64> AnnotationsBytes;
|
|
raw_svector_ostream Annotations(AnnotationsBytes);
|
|
|
|
bool gotInst;
|
|
if (isThumb)
|
|
gotInst = ThumbDisAsm->getInstruction(Inst, Size, MemoryObject, PC,
|
|
DebugOut, Annotations);
|
|
else
|
|
gotInst = DisAsm->getInstruction(Inst, Size, MemoryObject, PC,
|
|
DebugOut, Annotations);
|
|
if (gotInst) {
|
|
if (!NoShowRawInsn) {
|
|
DumpBytes(StringRef(Bytes.data() + Index, Size));
|
|
}
|
|
formatted_raw_ostream FormattedOS(outs());
|
|
Annotations.flush();
|
|
StringRef AnnotationsStr = Annotations.str();
|
|
if (isThumb)
|
|
ThumbIP->printInst(&Inst, FormattedOS, AnnotationsStr);
|
|
else
|
|
IP->printInst(&Inst, FormattedOS, AnnotationsStr);
|
|
emitComments(CommentStream, CommentsToEmit, FormattedOS, *AsmInfo);
|
|
|
|
// Print debug info.
|
|
if (diContext) {
|
|
DILineInfo dli =
|
|
diContext->getLineInfoForAddress(PC);
|
|
// Print valid line info if it changed.
|
|
if (dli != lastLine && dli.Line != 0)
|
|
outs() << "\t## " << dli.FileName << ':' << dli.Line << ':'
|
|
<< dli.Column;
|
|
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;
|
|
|
|
uint64_t PC = SectAddress + Index;
|
|
if (DisAsm->getInstruction(Inst, InstSize, MemoryObject, PC,
|
|
DebugOut, nulls())) {
|
|
if (FullLeadingAddr) {
|
|
if (MachOOF->is64Bit())
|
|
outs() << format("%016" PRIx64, PC);
|
|
else
|
|
outs() << format("%08" PRIx64, PC);
|
|
} else {
|
|
outs() << format("%8" PRIx64 ":", PC);
|
|
}
|
|
if (!NoShowRawInsn) {
|
|
outs() << "\t";
|
|
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
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// __compact_unwind section dumping
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
namespace {
|
|
|
|
template <typename T> static uint64_t readNext(const char *&Buf) {
|
|
using llvm::support::little;
|
|
using llvm::support::unaligned;
|
|
|
|
uint64_t Val = support::endian::read<T, little, unaligned>(Buf);
|
|
Buf += sizeof(T);
|
|
return Val;
|
|
}
|
|
|
|
struct CompactUnwindEntry {
|
|
uint32_t OffsetInSection;
|
|
|
|
uint64_t FunctionAddr;
|
|
uint32_t Length;
|
|
uint32_t CompactEncoding;
|
|
uint64_t PersonalityAddr;
|
|
uint64_t LSDAAddr;
|
|
|
|
RelocationRef FunctionReloc;
|
|
RelocationRef PersonalityReloc;
|
|
RelocationRef LSDAReloc;
|
|
|
|
CompactUnwindEntry(StringRef Contents, unsigned Offset, bool Is64)
|
|
: OffsetInSection(Offset) {
|
|
if (Is64)
|
|
read<uint64_t>(Contents.data() + Offset);
|
|
else
|
|
read<uint32_t>(Contents.data() + Offset);
|
|
}
|
|
|
|
private:
|
|
template<typename UIntPtr>
|
|
void read(const char *Buf) {
|
|
FunctionAddr = readNext<UIntPtr>(Buf);
|
|
Length = readNext<uint32_t>(Buf);
|
|
CompactEncoding = readNext<uint32_t>(Buf);
|
|
PersonalityAddr = readNext<UIntPtr>(Buf);
|
|
LSDAAddr = readNext<UIntPtr>(Buf);
|
|
}
|
|
};
|
|
}
|
|
|
|
/// Given a relocation from __compact_unwind, consisting of the RelocationRef
|
|
/// and data being relocated, determine the best base Name and Addend to use for
|
|
/// display purposes.
|
|
///
|
|
/// 1. An Extern relocation will directly reference a symbol (and the data is
|
|
/// then already an addend), so use that.
|
|
/// 2. Otherwise the data is an offset in the object file's layout; try to find
|
|
// a symbol before it in the same section, and use the offset from there.
|
|
/// 3. Finally, if all that fails, fall back to an offset from the start of the
|
|
/// referenced section.
|
|
static void findUnwindRelocNameAddend(const MachOObjectFile *Obj,
|
|
std::map<uint64_t, SymbolRef> &Symbols,
|
|
const RelocationRef &Reloc,
|
|
uint64_t Addr,
|
|
StringRef &Name, uint64_t &Addend) {
|
|
if (Reloc.getSymbol() != Obj->symbol_end()) {
|
|
Reloc.getSymbol()->getName(Name);
|
|
Addend = Addr;
|
|
return;
|
|
}
|
|
|
|
auto RE = Obj->getRelocation(Reloc.getRawDataRefImpl());
|
|
SectionRef RelocSection = Obj->getRelocationSection(RE);
|
|
|
|
uint64_t SectionAddr;
|
|
RelocSection.getAddress(SectionAddr);
|
|
|
|
auto Sym = Symbols.upper_bound(Addr);
|
|
if (Sym == Symbols.begin()) {
|
|
// The first symbol in the object is after this reference, the best we can
|
|
// do is section-relative notation.
|
|
RelocSection.getName(Name);
|
|
Addend = Addr - SectionAddr;
|
|
return;
|
|
}
|
|
|
|
// Go back one so that SymbolAddress <= Addr.
|
|
--Sym;
|
|
|
|
section_iterator SymSection = Obj->section_end();
|
|
Sym->second.getSection(SymSection);
|
|
if (RelocSection == *SymSection) {
|
|
// There's a valid symbol in the same section before this reference.
|
|
Sym->second.getName(Name);
|
|
Addend = Addr - Sym->first;
|
|
return;
|
|
}
|
|
|
|
// There is a symbol before this reference, but it's in a different
|
|
// section. Probably not helpful to mention it, so use the section name.
|
|
RelocSection.getName(Name);
|
|
Addend = Addr - SectionAddr;
|
|
}
|
|
|
|
static void printUnwindRelocDest(const MachOObjectFile *Obj,
|
|
std::map<uint64_t, SymbolRef> &Symbols,
|
|
const RelocationRef &Reloc,
|
|
uint64_t Addr) {
|
|
StringRef Name;
|
|
uint64_t Addend;
|
|
|
|
if (!Reloc.getObjectFile())
|
|
return;
|
|
|
|
findUnwindRelocNameAddend(Obj, Symbols, Reloc, Addr, Name, Addend);
|
|
|
|
outs() << Name;
|
|
if (Addend)
|
|
outs() << " + " << format("0x%" PRIx64, Addend);
|
|
}
|
|
|
|
static void
|
|
printMachOCompactUnwindSection(const MachOObjectFile *Obj,
|
|
std::map<uint64_t, SymbolRef> &Symbols,
|
|
const SectionRef &CompactUnwind) {
|
|
|
|
assert(Obj->isLittleEndian() &&
|
|
"There should not be a big-endian .o with __compact_unwind");
|
|
|
|
bool Is64 = Obj->is64Bit();
|
|
uint32_t PointerSize = Is64 ? sizeof(uint64_t) : sizeof(uint32_t);
|
|
uint32_t EntrySize = 3 * PointerSize + 2 * sizeof(uint32_t);
|
|
|
|
StringRef Contents;
|
|
CompactUnwind.getContents(Contents);
|
|
|
|
SmallVector<CompactUnwindEntry, 4> CompactUnwinds;
|
|
|
|
// First populate the initial raw offsets, encodings and so on from the entry.
|
|
for (unsigned Offset = 0; Offset < Contents.size(); Offset += EntrySize) {
|
|
CompactUnwindEntry Entry(Contents.data(), Offset, Is64);
|
|
CompactUnwinds.push_back(Entry);
|
|
}
|
|
|
|
// Next we need to look at the relocations to find out what objects are
|
|
// actually being referred to.
|
|
for (const RelocationRef &Reloc : CompactUnwind.relocations()) {
|
|
uint64_t RelocAddress;
|
|
Reloc.getOffset(RelocAddress);
|
|
|
|
uint32_t EntryIdx = RelocAddress / EntrySize;
|
|
uint32_t OffsetInEntry = RelocAddress - EntryIdx * EntrySize;
|
|
CompactUnwindEntry &Entry = CompactUnwinds[EntryIdx];
|
|
|
|
if (OffsetInEntry == 0)
|
|
Entry.FunctionReloc = Reloc;
|
|
else if (OffsetInEntry == PointerSize + 2 * sizeof(uint32_t))
|
|
Entry.PersonalityReloc = Reloc;
|
|
else if (OffsetInEntry == 2 * PointerSize + 2 * sizeof(uint32_t))
|
|
Entry.LSDAReloc = Reloc;
|
|
else
|
|
llvm_unreachable("Unexpected relocation in __compact_unwind section");
|
|
}
|
|
|
|
// Finally, we're ready to print the data we've gathered.
|
|
outs() << "Contents of __compact_unwind section:\n";
|
|
for (auto &Entry : CompactUnwinds) {
|
|
outs() << " Entry at offset "
|
|
<< format("0x%" PRIx32, Entry.OffsetInSection) << ":\n";
|
|
|
|
// 1. Start of the region this entry applies to.
|
|
outs() << " start: "
|
|
<< format("0x%" PRIx64, Entry.FunctionAddr) << ' ';
|
|
printUnwindRelocDest(Obj, Symbols, Entry.FunctionReloc,
|
|
Entry.FunctionAddr);
|
|
outs() << '\n';
|
|
|
|
// 2. Length of the region this entry applies to.
|
|
outs() << " length: "
|
|
<< format("0x%" PRIx32, Entry.Length) << '\n';
|
|
// 3. The 32-bit compact encoding.
|
|
outs() << " compact encoding: "
|
|
<< format("0x%08" PRIx32, Entry.CompactEncoding) << '\n';
|
|
|
|
// 4. The personality function, if present.
|
|
if (Entry.PersonalityReloc.getObjectFile()) {
|
|
outs() << " personality function: "
|
|
<< format("0x%" PRIx64, Entry.PersonalityAddr) << ' ';
|
|
printUnwindRelocDest(Obj, Symbols, Entry.PersonalityReloc,
|
|
Entry.PersonalityAddr);
|
|
outs() << '\n';
|
|
}
|
|
|
|
// 5. This entry's language-specific data area.
|
|
if (Entry.LSDAReloc.getObjectFile()) {
|
|
outs() << " LSDA: "
|
|
<< format("0x%" PRIx64, Entry.LSDAAddr) << ' ';
|
|
printUnwindRelocDest(Obj, Symbols, Entry.LSDAReloc, Entry.LSDAAddr);
|
|
outs() << '\n';
|
|
}
|
|
}
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// __unwind_info section dumping
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
static void printRegularSecondLevelUnwindPage(const char *PageStart) {
|
|
const char *Pos = PageStart;
|
|
uint32_t Kind = readNext<uint32_t>(Pos);
|
|
(void)Kind;
|
|
assert(Kind == 2 && "kind for a regular 2nd level index should be 2");
|
|
|
|
uint16_t EntriesStart = readNext<uint16_t>(Pos);
|
|
uint16_t NumEntries = readNext<uint16_t>(Pos);
|
|
|
|
Pos = PageStart + EntriesStart;
|
|
for (unsigned i = 0; i < NumEntries; ++i) {
|
|
uint32_t FunctionOffset = readNext<uint32_t>(Pos);
|
|
uint32_t Encoding = readNext<uint32_t>(Pos);
|
|
|
|
outs() << " [" << i << "]: "
|
|
<< "function offset="
|
|
<< format("0x%08" PRIx32, FunctionOffset) << ", "
|
|
<< "encoding="
|
|
<< format("0x%08" PRIx32, Encoding)
|
|
<< '\n';
|
|
}
|
|
}
|
|
|
|
static void printCompressedSecondLevelUnwindPage(
|
|
const char *PageStart, uint32_t FunctionBase,
|
|
const SmallVectorImpl<uint32_t> &CommonEncodings) {
|
|
const char *Pos = PageStart;
|
|
uint32_t Kind = readNext<uint32_t>(Pos);
|
|
(void)Kind;
|
|
assert(Kind == 3 && "kind for a compressed 2nd level index should be 3");
|
|
|
|
uint16_t EntriesStart = readNext<uint16_t>(Pos);
|
|
uint16_t NumEntries = readNext<uint16_t>(Pos);
|
|
|
|
uint16_t EncodingsStart = readNext<uint16_t>(Pos);
|
|
readNext<uint16_t>(Pos);
|
|
const auto *PageEncodings = reinterpret_cast<const support::ulittle32_t *>(
|
|
PageStart + EncodingsStart);
|
|
|
|
Pos = PageStart + EntriesStart;
|
|
for (unsigned i = 0; i < NumEntries; ++i) {
|
|
uint32_t Entry = readNext<uint32_t>(Pos);
|
|
uint32_t FunctionOffset = FunctionBase + (Entry & 0xffffff);
|
|
uint32_t EncodingIdx = Entry >> 24;
|
|
|
|
uint32_t Encoding;
|
|
if (EncodingIdx < CommonEncodings.size())
|
|
Encoding = CommonEncodings[EncodingIdx];
|
|
else
|
|
Encoding = PageEncodings[EncodingIdx - CommonEncodings.size()];
|
|
|
|
outs() << " [" << i << "]: "
|
|
<< "function offset="
|
|
<< format("0x%08" PRIx32, FunctionOffset) << ", "
|
|
<< "encoding[" << EncodingIdx << "]="
|
|
<< format("0x%08" PRIx32, Encoding)
|
|
<< '\n';
|
|
}
|
|
}
|
|
|
|
static void
|
|
printMachOUnwindInfoSection(const MachOObjectFile *Obj,
|
|
std::map<uint64_t, SymbolRef> &Symbols,
|
|
const SectionRef &UnwindInfo) {
|
|
|
|
assert(Obj->isLittleEndian() &&
|
|
"There should not be a big-endian .o with __unwind_info");
|
|
|
|
outs() << "Contents of __unwind_info section:\n";
|
|
|
|
StringRef Contents;
|
|
UnwindInfo.getContents(Contents);
|
|
const char *Pos = Contents.data();
|
|
|
|
//===----------------------------------
|
|
// Section header
|
|
//===----------------------------------
|
|
|
|
uint32_t Version = readNext<uint32_t>(Pos);
|
|
outs() << " Version: "
|
|
<< format("0x%" PRIx32, Version) << '\n';
|
|
assert(Version == 1 && "only understand version 1");
|
|
|
|
uint32_t CommonEncodingsStart = readNext<uint32_t>(Pos);
|
|
outs() << " Common encodings array section offset: "
|
|
<< format("0x%" PRIx32, CommonEncodingsStart) << '\n';
|
|
uint32_t NumCommonEncodings = readNext<uint32_t>(Pos);
|
|
outs() << " Number of common encodings in array: "
|
|
<< format("0x%" PRIx32, NumCommonEncodings) << '\n';
|
|
|
|
uint32_t PersonalitiesStart = readNext<uint32_t>(Pos);
|
|
outs() << " Personality function array section offset: "
|
|
<< format("0x%" PRIx32, PersonalitiesStart) << '\n';
|
|
uint32_t NumPersonalities = readNext<uint32_t>(Pos);
|
|
outs() << " Number of personality functions in array: "
|
|
<< format("0x%" PRIx32, NumPersonalities) << '\n';
|
|
|
|
uint32_t IndicesStart = readNext<uint32_t>(Pos);
|
|
outs() << " Index array section offset: "
|
|
<< format("0x%" PRIx32, IndicesStart) << '\n';
|
|
uint32_t NumIndices = readNext<uint32_t>(Pos);
|
|
outs() << " Number of indices in array: "
|
|
<< format("0x%" PRIx32, NumIndices) << '\n';
|
|
|
|
//===----------------------------------
|
|
// A shared list of common encodings
|
|
//===----------------------------------
|
|
|
|
// These occupy indices in the range [0, N] whenever an encoding is referenced
|
|
// from a compressed 2nd level index table. In practice the linker only
|
|
// creates ~128 of these, so that indices are available to embed encodings in
|
|
// the 2nd level index.
|
|
|
|
SmallVector<uint32_t, 64> CommonEncodings;
|
|
outs() << " Common encodings: (count = " << NumCommonEncodings << ")\n";
|
|
Pos = Contents.data() + CommonEncodingsStart;
|
|
for (unsigned i = 0; i < NumCommonEncodings; ++i) {
|
|
uint32_t Encoding = readNext<uint32_t>(Pos);
|
|
CommonEncodings.push_back(Encoding);
|
|
|
|
outs() << " encoding[" << i << "]: " << format("0x%08" PRIx32, Encoding)
|
|
<< '\n';
|
|
}
|
|
|
|
|
|
//===----------------------------------
|
|
// Personality functions used in this executable
|
|
//===----------------------------------
|
|
|
|
// There should be only a handful of these (one per source language,
|
|
// roughly). Particularly since they only get 2 bits in the compact encoding.
|
|
|
|
outs() << " Personality functions: (count = " << NumPersonalities << ")\n";
|
|
Pos = Contents.data() + PersonalitiesStart;
|
|
for (unsigned i = 0; i < NumPersonalities; ++i) {
|
|
uint32_t PersonalityFn = readNext<uint32_t>(Pos);
|
|
outs() << " personality[" << i + 1
|
|
<< "]: " << format("0x%08" PRIx32, PersonalityFn) << '\n';
|
|
}
|
|
|
|
//===----------------------------------
|
|
// The level 1 index entries
|
|
//===----------------------------------
|
|
|
|
// These specify an approximate place to start searching for the more detailed
|
|
// information, sorted by PC.
|
|
|
|
struct IndexEntry {
|
|
uint32_t FunctionOffset;
|
|
uint32_t SecondLevelPageStart;
|
|
uint32_t LSDAStart;
|
|
};
|
|
|
|
SmallVector<IndexEntry, 4> IndexEntries;
|
|
|
|
outs() << " Top level indices: (count = " << NumIndices << ")\n";
|
|
Pos = Contents.data() + IndicesStart;
|
|
for (unsigned i = 0; i < NumIndices; ++i) {
|
|
IndexEntry Entry;
|
|
|
|
Entry.FunctionOffset = readNext<uint32_t>(Pos);
|
|
Entry.SecondLevelPageStart = readNext<uint32_t>(Pos);
|
|
Entry.LSDAStart = readNext<uint32_t>(Pos);
|
|
IndexEntries.push_back(Entry);
|
|
|
|
outs() << " [" << i << "]: "
|
|
<< "function offset="
|
|
<< format("0x%08" PRIx32, Entry.FunctionOffset) << ", "
|
|
<< "2nd level page offset="
|
|
<< format("0x%08" PRIx32, Entry.SecondLevelPageStart) << ", "
|
|
<< "LSDA offset="
|
|
<< format("0x%08" PRIx32, Entry.LSDAStart) << '\n';
|
|
}
|
|
|
|
|
|
//===----------------------------------
|
|
// Next come the LSDA tables
|
|
//===----------------------------------
|
|
|
|
// The LSDA layout is rather implicit: it's a contiguous array of entries from
|
|
// the first top-level index's LSDAOffset to the last (sentinel).
|
|
|
|
outs() << " LSDA descriptors:\n";
|
|
Pos = Contents.data() + IndexEntries[0].LSDAStart;
|
|
int NumLSDAs = (IndexEntries.back().LSDAStart - IndexEntries[0].LSDAStart) /
|
|
(2 * sizeof(uint32_t));
|
|
for (int i = 0; i < NumLSDAs; ++i) {
|
|
uint32_t FunctionOffset = readNext<uint32_t>(Pos);
|
|
uint32_t LSDAOffset = readNext<uint32_t>(Pos);
|
|
outs() << " [" << i << "]: "
|
|
<< "function offset="
|
|
<< format("0x%08" PRIx32, FunctionOffset) << ", "
|
|
<< "LSDA offset="
|
|
<< format("0x%08" PRIx32, LSDAOffset) << '\n';
|
|
}
|
|
|
|
//===----------------------------------
|
|
// Finally, the 2nd level indices
|
|
//===----------------------------------
|
|
|
|
// Generally these are 4K in size, and have 2 possible forms:
|
|
// + Regular stores up to 511 entries with disparate encodings
|
|
// + Compressed stores up to 1021 entries if few enough compact encoding
|
|
// values are used.
|
|
outs() << " Second level indices:\n";
|
|
for (unsigned i = 0; i < IndexEntries.size() - 1; ++i) {
|
|
// The final sentinel top-level index has no associated 2nd level page
|
|
if (IndexEntries[i].SecondLevelPageStart == 0)
|
|
break;
|
|
|
|
outs() << " Second level index[" << i << "]: "
|
|
<< "offset in section="
|
|
<< format("0x%08" PRIx32, IndexEntries[i].SecondLevelPageStart)
|
|
<< ", "
|
|
<< "base function offset="
|
|
<< format("0x%08" PRIx32, IndexEntries[i].FunctionOffset) << '\n';
|
|
|
|
Pos = Contents.data() + IndexEntries[i].SecondLevelPageStart;
|
|
uint32_t Kind = *reinterpret_cast<const support::ulittle32_t *>(Pos);
|
|
if (Kind == 2)
|
|
printRegularSecondLevelUnwindPage(Pos);
|
|
else if (Kind == 3)
|
|
printCompressedSecondLevelUnwindPage(Pos, IndexEntries[i].FunctionOffset,
|
|
CommonEncodings);
|
|
else
|
|
llvm_unreachable("Do not know how to print this kind of 2nd level page");
|
|
|
|
}
|
|
}
|
|
|
|
void llvm::printMachOUnwindInfo(const MachOObjectFile *Obj) {
|
|
std::map<uint64_t, SymbolRef> Symbols;
|
|
for (const SymbolRef &SymRef : Obj->symbols()) {
|
|
// Discard any undefined or absolute symbols. They're not going to take part
|
|
// in the convenience lookup for unwind info and just take up resources.
|
|
section_iterator Section = Obj->section_end();
|
|
SymRef.getSection(Section);
|
|
if (Section == Obj->section_end())
|
|
continue;
|
|
|
|
uint64_t Addr;
|
|
SymRef.getAddress(Addr);
|
|
Symbols.insert(std::make_pair(Addr, SymRef));
|
|
}
|
|
|
|
for (const SectionRef &Section : Obj->sections()) {
|
|
StringRef SectName;
|
|
Section.getName(SectName);
|
|
if (SectName == "__compact_unwind")
|
|
printMachOCompactUnwindSection(Obj, Symbols, Section);
|
|
else if (SectName == "__unwind_info")
|
|
printMachOUnwindInfoSection(Obj, Symbols, Section);
|
|
else if (SectName == "__eh_frame")
|
|
outs() << "llvm-objdump: warning: unhandled __eh_frame section\n";
|
|
|
|
}
|
|
}
|
|
|
|
static void PrintMachHeader(uint32_t magic, uint32_t cputype,
|
|
uint32_t cpusubtype, uint32_t filetype,
|
|
uint32_t ncmds, uint32_t sizeofcmds, uint32_t flags,
|
|
bool verbose) {
|
|
outs() << "Mach header\n";
|
|
outs() << " magic cputype cpusubtype caps filetype ncmds "
|
|
"sizeofcmds flags\n";
|
|
if (verbose) {
|
|
if (magic == MachO::MH_MAGIC)
|
|
outs() << " MH_MAGIC";
|
|
else if (magic == MachO::MH_MAGIC_64)
|
|
outs() << "MH_MAGIC_64";
|
|
else
|
|
outs() << format(" 0x%08" PRIx32, magic);
|
|
switch (cputype) {
|
|
case MachO::CPU_TYPE_I386:
|
|
outs() << " I386";
|
|
switch (cpusubtype & ~MachO::CPU_SUBTYPE_MASK) {
|
|
case MachO::CPU_SUBTYPE_I386_ALL:
|
|
outs() << " ALL";
|
|
break;
|
|
default:
|
|
outs() << format(" %10d", cpusubtype & ~MachO::CPU_SUBTYPE_MASK);
|
|
break;
|
|
}
|
|
break;
|
|
case MachO::CPU_TYPE_X86_64:
|
|
outs() << " X86_64";
|
|
case MachO::CPU_SUBTYPE_X86_64_ALL:
|
|
outs() << " ALL";
|
|
break;
|
|
case MachO::CPU_SUBTYPE_X86_64_H:
|
|
outs() << " Haswell";
|
|
outs() << format(" %10d", cpusubtype & ~MachO::CPU_SUBTYPE_MASK);
|
|
break;
|
|
case MachO::CPU_TYPE_ARM:
|
|
outs() << " ARM";
|
|
switch (cpusubtype & ~MachO::CPU_SUBTYPE_MASK) {
|
|
case MachO::CPU_SUBTYPE_ARM_ALL:
|
|
outs() << " ALL";
|
|
break;
|
|
case MachO::CPU_SUBTYPE_ARM_V4T:
|
|
outs() << " V4T";
|
|
break;
|
|
case MachO::CPU_SUBTYPE_ARM_V5TEJ:
|
|
outs() << " V5TEJ";
|
|
break;
|
|
case MachO::CPU_SUBTYPE_ARM_XSCALE:
|
|
outs() << " XSCALE";
|
|
break;
|
|
case MachO::CPU_SUBTYPE_ARM_V6:
|
|
outs() << " V6";
|
|
break;
|
|
case MachO::CPU_SUBTYPE_ARM_V6M:
|
|
outs() << " V6M";
|
|
break;
|
|
case MachO::CPU_SUBTYPE_ARM_V7:
|
|
outs() << " V7";
|
|
break;
|
|
case MachO::CPU_SUBTYPE_ARM_V7EM:
|
|
outs() << " V7EM";
|
|
break;
|
|
case MachO::CPU_SUBTYPE_ARM_V7K:
|
|
outs() << " V7K";
|
|
break;
|
|
case MachO::CPU_SUBTYPE_ARM_V7M:
|
|
outs() << " V7M";
|
|
break;
|
|
case MachO::CPU_SUBTYPE_ARM_V7S:
|
|
outs() << " V7S";
|
|
break;
|
|
default:
|
|
outs() << format(" %10d", cpusubtype & ~MachO::CPU_SUBTYPE_MASK);
|
|
break;
|
|
}
|
|
break;
|
|
case MachO::CPU_TYPE_ARM64:
|
|
outs() << " ARM64";
|
|
switch (cpusubtype & ~MachO::CPU_SUBTYPE_MASK) {
|
|
case MachO::CPU_SUBTYPE_ARM64_ALL:
|
|
outs() << " ALL";
|
|
break;
|
|
default:
|
|
outs() << format(" %10d", cpusubtype & ~MachO::CPU_SUBTYPE_MASK);
|
|
break;
|
|
}
|
|
break;
|
|
case MachO::CPU_TYPE_POWERPC:
|
|
outs() << " PPC";
|
|
switch (cpusubtype & ~MachO::CPU_SUBTYPE_MASK) {
|
|
case MachO::CPU_SUBTYPE_POWERPC_ALL:
|
|
outs() << " ALL";
|
|
break;
|
|
default:
|
|
outs() << format(" %10d", cpusubtype & ~MachO::CPU_SUBTYPE_MASK);
|
|
break;
|
|
}
|
|
break;
|
|
case MachO::CPU_TYPE_POWERPC64:
|
|
outs() << " PPC64";
|
|
switch (cpusubtype & ~MachO::CPU_SUBTYPE_MASK) {
|
|
case MachO::CPU_SUBTYPE_POWERPC_ALL:
|
|
outs() << " ALL";
|
|
break;
|
|
default:
|
|
outs() << format(" %10d", cpusubtype & ~MachO::CPU_SUBTYPE_MASK);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
if ((cpusubtype & MachO::CPU_SUBTYPE_MASK) == MachO::CPU_SUBTYPE_LIB64) {
|
|
outs() << " LIB64";
|
|
} else {
|
|
outs() << format(" 0x%02" PRIx32,
|
|
(cpusubtype & MachO::CPU_SUBTYPE_MASK) >> 24);
|
|
}
|
|
switch (filetype) {
|
|
case MachO::MH_OBJECT:
|
|
outs() << " OBJECT";
|
|
break;
|
|
case MachO::MH_EXECUTE:
|
|
outs() << " EXECUTE";
|
|
break;
|
|
case MachO::MH_FVMLIB:
|
|
outs() << " FVMLIB";
|
|
break;
|
|
case MachO::MH_CORE:
|
|
outs() << " CORE";
|
|
break;
|
|
case MachO::MH_PRELOAD:
|
|
outs() << " PRELOAD";
|
|
break;
|
|
case MachO::MH_DYLIB:
|
|
outs() << " DYLIB";
|
|
break;
|
|
case MachO::MH_DYLIB_STUB:
|
|
outs() << " DYLIB_STUB";
|
|
break;
|
|
case MachO::MH_DYLINKER:
|
|
outs() << " DYLINKER";
|
|
break;
|
|
case MachO::MH_BUNDLE:
|
|
outs() << " BUNDLE";
|
|
break;
|
|
case MachO::MH_DSYM:
|
|
outs() << " DSYM";
|
|
break;
|
|
case MachO::MH_KEXT_BUNDLE:
|
|
outs() << " KEXTBUNDLE";
|
|
break;
|
|
default:
|
|
outs() << format(" %10u", filetype);
|
|
break;
|
|
}
|
|
outs() << format(" %5u", ncmds);
|
|
outs() << format(" %10u", sizeofcmds);
|
|
uint32_t f = flags;
|
|
if (f & MachO::MH_NOUNDEFS) {
|
|
outs() << " NOUNDEFS";
|
|
f &= ~MachO::MH_NOUNDEFS;
|
|
}
|
|
if (f & MachO::MH_INCRLINK) {
|
|
outs() << " INCRLINK";
|
|
f &= ~MachO::MH_INCRLINK;
|
|
}
|
|
if (f & MachO::MH_DYLDLINK) {
|
|
outs() << " DYLDLINK";
|
|
f &= ~MachO::MH_DYLDLINK;
|
|
}
|
|
if (f & MachO::MH_BINDATLOAD) {
|
|
outs() << " BINDATLOAD";
|
|
f &= ~MachO::MH_BINDATLOAD;
|
|
}
|
|
if (f & MachO::MH_PREBOUND) {
|
|
outs() << " PREBOUND";
|
|
f &= ~MachO::MH_PREBOUND;
|
|
}
|
|
if (f & MachO::MH_SPLIT_SEGS) {
|
|
outs() << " SPLIT_SEGS";
|
|
f &= ~MachO::MH_SPLIT_SEGS;
|
|
}
|
|
if (f & MachO::MH_LAZY_INIT) {
|
|
outs() << " LAZY_INIT";
|
|
f &= ~MachO::MH_LAZY_INIT;
|
|
}
|
|
if (f & MachO::MH_TWOLEVEL) {
|
|
outs() << " TWOLEVEL";
|
|
f &= ~MachO::MH_TWOLEVEL;
|
|
}
|
|
if (f & MachO::MH_FORCE_FLAT) {
|
|
outs() << " FORCE_FLAT";
|
|
f &= ~MachO::MH_FORCE_FLAT;
|
|
}
|
|
if (f & MachO::MH_NOMULTIDEFS) {
|
|
outs() << " NOMULTIDEFS";
|
|
f &= ~MachO::MH_NOMULTIDEFS;
|
|
}
|
|
if (f & MachO::MH_NOFIXPREBINDING) {
|
|
outs() << " NOFIXPREBINDING";
|
|
f &= ~MachO::MH_NOFIXPREBINDING;
|
|
}
|
|
if (f & MachO::MH_PREBINDABLE) {
|
|
outs() << " PREBINDABLE";
|
|
f &= ~MachO::MH_PREBINDABLE;
|
|
}
|
|
if (f & MachO::MH_ALLMODSBOUND) {
|
|
outs() << " ALLMODSBOUND";
|
|
f &= ~MachO::MH_ALLMODSBOUND;
|
|
}
|
|
if (f & MachO::MH_SUBSECTIONS_VIA_SYMBOLS) {
|
|
outs() << " SUBSECTIONS_VIA_SYMBOLS";
|
|
f &= ~MachO::MH_SUBSECTIONS_VIA_SYMBOLS;
|
|
}
|
|
if (f & MachO::MH_CANONICAL) {
|
|
outs() << " CANONICAL";
|
|
f &= ~MachO::MH_CANONICAL;
|
|
}
|
|
if (f & MachO::MH_WEAK_DEFINES) {
|
|
outs() << " WEAK_DEFINES";
|
|
f &= ~MachO::MH_WEAK_DEFINES;
|
|
}
|
|
if (f & MachO::MH_BINDS_TO_WEAK) {
|
|
outs() << " BINDS_TO_WEAK";
|
|
f &= ~MachO::MH_BINDS_TO_WEAK;
|
|
}
|
|
if (f & MachO::MH_ALLOW_STACK_EXECUTION) {
|
|
outs() << " ALLOW_STACK_EXECUTION";
|
|
f &= ~MachO::MH_ALLOW_STACK_EXECUTION;
|
|
}
|
|
if (f & MachO::MH_DEAD_STRIPPABLE_DYLIB) {
|
|
outs() << " DEAD_STRIPPABLE_DYLIB";
|
|
f &= ~MachO::MH_DEAD_STRIPPABLE_DYLIB;
|
|
}
|
|
if (f & MachO::MH_PIE) {
|
|
outs() << " PIE";
|
|
f &= ~MachO::MH_PIE;
|
|
}
|
|
if (f & MachO::MH_NO_REEXPORTED_DYLIBS) {
|
|
outs() << " NO_REEXPORTED_DYLIBS";
|
|
f &= ~MachO::MH_NO_REEXPORTED_DYLIBS;
|
|
}
|
|
if (f & MachO::MH_HAS_TLV_DESCRIPTORS) {
|
|
outs() << " MH_HAS_TLV_DESCRIPTORS";
|
|
f &= ~MachO::MH_HAS_TLV_DESCRIPTORS;
|
|
}
|
|
if (f & MachO::MH_NO_HEAP_EXECUTION) {
|
|
outs() << " MH_NO_HEAP_EXECUTION";
|
|
f &= ~MachO::MH_NO_HEAP_EXECUTION;
|
|
}
|
|
if (f & MachO::MH_APP_EXTENSION_SAFE) {
|
|
outs() << " APP_EXTENSION_SAFE";
|
|
f &= ~MachO::MH_APP_EXTENSION_SAFE;
|
|
}
|
|
if (f != 0 || flags == 0)
|
|
outs() << format(" 0x%08" PRIx32, f);
|
|
} else {
|
|
outs() << format(" 0x%08" PRIx32, magic);
|
|
outs() << format(" %7d", cputype);
|
|
outs() << format(" %10d", cpusubtype & ~MachO::CPU_SUBTYPE_MASK);
|
|
outs() << format(" 0x%02" PRIx32,
|
|
(cpusubtype & MachO::CPU_SUBTYPE_MASK) >> 24);
|
|
outs() << format(" %10u", filetype);
|
|
outs() << format(" %5u", ncmds);
|
|
outs() << format(" %10u", sizeofcmds);
|
|
outs() << format(" 0x%08" PRIx32, flags);
|
|
}
|
|
outs() << "\n";
|
|
}
|
|
|
|
static void PrintSegmentCommand(uint32_t cmd, uint32_t cmdsize,
|
|
StringRef SegName, uint64_t vmaddr,
|
|
uint64_t vmsize, uint64_t fileoff,
|
|
uint64_t filesize, uint32_t maxprot,
|
|
uint32_t initprot, uint32_t nsects,
|
|
uint32_t flags, uint32_t object_size,
|
|
bool verbose) {
|
|
uint64_t expected_cmdsize;
|
|
if (cmd == MachO::LC_SEGMENT) {
|
|
outs() << " cmd LC_SEGMENT\n";
|
|
expected_cmdsize = nsects;
|
|
expected_cmdsize *= sizeof(struct MachO::section);
|
|
expected_cmdsize += sizeof(struct MachO::segment_command);
|
|
} else {
|
|
outs() << " cmd LC_SEGMENT_64\n";
|
|
expected_cmdsize = nsects;
|
|
expected_cmdsize *= sizeof(struct MachO::section_64);
|
|
expected_cmdsize += sizeof(struct MachO::segment_command_64);
|
|
}
|
|
outs() << " cmdsize " << cmdsize;
|
|
if (cmdsize != expected_cmdsize)
|
|
outs() << " Inconsistent size\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " segname " << SegName << "\n";
|
|
if (cmd == MachO::LC_SEGMENT_64) {
|
|
outs() << " vmaddr " << format("0x%016" PRIx64, vmaddr) << "\n";
|
|
outs() << " vmsize " << format("0x%016" PRIx64, vmsize) << "\n";
|
|
} else {
|
|
outs() << " vmaddr " << format("0x%08" PRIx32, vmaddr) << "\n";
|
|
outs() << " vmsize " << format("0x%08" PRIx32, vmsize) << "\n";
|
|
}
|
|
outs() << " fileoff " << fileoff;
|
|
if (fileoff > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " filesize " << filesize;
|
|
if (fileoff + filesize > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
if (verbose) {
|
|
if ((maxprot &
|
|
~(MachO::VM_PROT_READ | MachO::VM_PROT_WRITE |
|
|
MachO::VM_PROT_EXECUTE)) != 0)
|
|
outs() << " maxprot ?" << format("0x%08" PRIx32, maxprot) << "\n";
|
|
else {
|
|
if (maxprot & MachO::VM_PROT_READ)
|
|
outs() << " maxprot r";
|
|
else
|
|
outs() << " maxprot -";
|
|
if (maxprot & MachO::VM_PROT_WRITE)
|
|
outs() << "w";
|
|
else
|
|
outs() << "-";
|
|
if (maxprot & MachO::VM_PROT_EXECUTE)
|
|
outs() << "x\n";
|
|
else
|
|
outs() << "-\n";
|
|
}
|
|
if ((initprot &
|
|
~(MachO::VM_PROT_READ | MachO::VM_PROT_WRITE |
|
|
MachO::VM_PROT_EXECUTE)) != 0)
|
|
outs() << " initprot ?" << format("0x%08" PRIx32, initprot) << "\n";
|
|
else {
|
|
if (initprot & MachO::VM_PROT_READ)
|
|
outs() << " initprot r";
|
|
else
|
|
outs() << " initprot -";
|
|
if (initprot & MachO::VM_PROT_WRITE)
|
|
outs() << "w";
|
|
else
|
|
outs() << "-";
|
|
if (initprot & MachO::VM_PROT_EXECUTE)
|
|
outs() << "x\n";
|
|
else
|
|
outs() << "-\n";
|
|
}
|
|
} else {
|
|
outs() << " maxprot " << format("0x%08" PRIx32, maxprot) << "\n";
|
|
outs() << " initprot " << format("0x%08" PRIx32, initprot) << "\n";
|
|
}
|
|
outs() << " nsects " << nsects << "\n";
|
|
if (verbose) {
|
|
outs() << " flags";
|
|
if (flags == 0)
|
|
outs() << " (none)\n";
|
|
else {
|
|
if (flags & MachO::SG_HIGHVM) {
|
|
outs() << " HIGHVM";
|
|
flags &= ~MachO::SG_HIGHVM;
|
|
}
|
|
if (flags & MachO::SG_FVMLIB) {
|
|
outs() << " FVMLIB";
|
|
flags &= ~MachO::SG_FVMLIB;
|
|
}
|
|
if (flags & MachO::SG_NORELOC) {
|
|
outs() << " NORELOC";
|
|
flags &= ~MachO::SG_NORELOC;
|
|
}
|
|
if (flags & MachO::SG_PROTECTED_VERSION_1) {
|
|
outs() << " PROTECTED_VERSION_1";
|
|
flags &= ~MachO::SG_PROTECTED_VERSION_1;
|
|
}
|
|
if (flags)
|
|
outs() << format(" 0x%08" PRIx32, flags) << " (unknown flags)\n";
|
|
else
|
|
outs() << "\n";
|
|
}
|
|
} else {
|
|
outs() << " flags " << format("0x%" PRIx32, flags) << "\n";
|
|
}
|
|
}
|
|
|
|
static void PrintSection(const char *sectname, const char *segname,
|
|
uint64_t addr, uint64_t size, uint32_t offset,
|
|
uint32_t align, uint32_t reloff, uint32_t nreloc,
|
|
uint32_t flags, uint32_t reserved1, uint32_t reserved2,
|
|
uint32_t cmd, const char *sg_segname,
|
|
uint32_t filetype, uint32_t object_size,
|
|
bool verbose) {
|
|
outs() << "Section\n";
|
|
outs() << " sectname " << format("%.16s\n", sectname);
|
|
outs() << " segname " << format("%.16s", segname);
|
|
if (filetype != MachO::MH_OBJECT && strncmp(sg_segname, segname, 16) != 0)
|
|
outs() << " (does not match segment)\n";
|
|
else
|
|
outs() << "\n";
|
|
if (cmd == MachO::LC_SEGMENT_64) {
|
|
outs() << " addr " << format("0x%016" PRIx64, addr) << "\n";
|
|
outs() << " size " << format("0x%016" PRIx64, size);
|
|
} else {
|
|
outs() << " addr " << format("0x%08" PRIx32, addr) << "\n";
|
|
outs() << " size " << format("0x%08" PRIx32, size);
|
|
}
|
|
if ((flags & MachO::S_ZEROFILL) != 0 && offset + size > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " offset " << offset;
|
|
if (offset > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
uint32_t align_shifted = 1 << align;
|
|
outs() << " align 2^" << align << " (" << align_shifted << ")\n";
|
|
outs() << " reloff " << reloff;
|
|
if (reloff > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " nreloc " << nreloc;
|
|
if (reloff + nreloc * sizeof(struct MachO::relocation_info) > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
uint32_t section_type = flags & MachO::SECTION_TYPE;
|
|
if (verbose) {
|
|
outs() << " type";
|
|
if (section_type == MachO::S_REGULAR)
|
|
outs() << " S_REGULAR\n";
|
|
else if (section_type == MachO::S_ZEROFILL)
|
|
outs() << " S_ZEROFILL\n";
|
|
else if (section_type == MachO::S_CSTRING_LITERALS)
|
|
outs() << " S_CSTRING_LITERALS\n";
|
|
else if (section_type == MachO::S_4BYTE_LITERALS)
|
|
outs() << " S_4BYTE_LITERALS\n";
|
|
else if (section_type == MachO::S_8BYTE_LITERALS)
|
|
outs() << " S_8BYTE_LITERALS\n";
|
|
else if (section_type == MachO::S_16BYTE_LITERALS)
|
|
outs() << " S_16BYTE_LITERALS\n";
|
|
else if (section_type == MachO::S_LITERAL_POINTERS)
|
|
outs() << " S_LITERAL_POINTERS\n";
|
|
else if (section_type == MachO::S_NON_LAZY_SYMBOL_POINTERS)
|
|
outs() << " S_NON_LAZY_SYMBOL_POINTERS\n";
|
|
else if (section_type == MachO::S_LAZY_SYMBOL_POINTERS)
|
|
outs() << " S_LAZY_SYMBOL_POINTERS\n";
|
|
else if (section_type == MachO::S_SYMBOL_STUBS)
|
|
outs() << " S_SYMBOL_STUBS\n";
|
|
else if (section_type == MachO::S_MOD_INIT_FUNC_POINTERS)
|
|
outs() << " S_MOD_INIT_FUNC_POINTERS\n";
|
|
else if (section_type == MachO::S_MOD_TERM_FUNC_POINTERS)
|
|
outs() << " S_MOD_TERM_FUNC_POINTERS\n";
|
|
else if (section_type == MachO::S_COALESCED)
|
|
outs() << " S_COALESCED\n";
|
|
else if (section_type == MachO::S_INTERPOSING)
|
|
outs() << " S_INTERPOSING\n";
|
|
else if (section_type == MachO::S_DTRACE_DOF)
|
|
outs() << " S_DTRACE_DOF\n";
|
|
else if (section_type == MachO::S_LAZY_DYLIB_SYMBOL_POINTERS)
|
|
outs() << " S_LAZY_DYLIB_SYMBOL_POINTERS\n";
|
|
else if (section_type == MachO::S_THREAD_LOCAL_REGULAR)
|
|
outs() << " S_THREAD_LOCAL_REGULAR\n";
|
|
else if (section_type == MachO::S_THREAD_LOCAL_ZEROFILL)
|
|
outs() << " S_THREAD_LOCAL_ZEROFILL\n";
|
|
else if (section_type == MachO::S_THREAD_LOCAL_VARIABLES)
|
|
outs() << " S_THREAD_LOCAL_VARIABLES\n";
|
|
else if (section_type == MachO::S_THREAD_LOCAL_VARIABLE_POINTERS)
|
|
outs() << " S_THREAD_LOCAL_VARIABLE_POINTERS\n";
|
|
else if (section_type == MachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS)
|
|
outs() << " S_THREAD_LOCAL_INIT_FUNCTION_POINTERS\n";
|
|
else
|
|
outs() << format("0x%08" PRIx32, section_type) << "\n";
|
|
outs() << "attributes";
|
|
uint32_t section_attributes = flags & MachO::SECTION_ATTRIBUTES;
|
|
if (section_attributes & MachO::S_ATTR_PURE_INSTRUCTIONS)
|
|
outs() << " PURE_INSTRUCTIONS";
|
|
if (section_attributes & MachO::S_ATTR_NO_TOC)
|
|
outs() << " NO_TOC";
|
|
if (section_attributes & MachO::S_ATTR_STRIP_STATIC_SYMS)
|
|
outs() << " STRIP_STATIC_SYMS";
|
|
if (section_attributes & MachO::S_ATTR_NO_DEAD_STRIP)
|
|
outs() << " NO_DEAD_STRIP";
|
|
if (section_attributes & MachO::S_ATTR_LIVE_SUPPORT)
|
|
outs() << " LIVE_SUPPORT";
|
|
if (section_attributes & MachO::S_ATTR_SELF_MODIFYING_CODE)
|
|
outs() << " SELF_MODIFYING_CODE";
|
|
if (section_attributes & MachO::S_ATTR_DEBUG)
|
|
outs() << " DEBUG";
|
|
if (section_attributes & MachO::S_ATTR_SOME_INSTRUCTIONS)
|
|
outs() << " SOME_INSTRUCTIONS";
|
|
if (section_attributes & MachO::S_ATTR_EXT_RELOC)
|
|
outs() << " EXT_RELOC";
|
|
if (section_attributes & MachO::S_ATTR_LOC_RELOC)
|
|
outs() << " LOC_RELOC";
|
|
if (section_attributes == 0)
|
|
outs() << " (none)";
|
|
outs() << "\n";
|
|
} else
|
|
outs() << " flags " << format("0x%08" PRIx32, flags) << "\n";
|
|
outs() << " reserved1 " << reserved1;
|
|
if (section_type == MachO::S_SYMBOL_STUBS ||
|
|
section_type == MachO::S_LAZY_SYMBOL_POINTERS ||
|
|
section_type == MachO::S_LAZY_DYLIB_SYMBOL_POINTERS ||
|
|
section_type == MachO::S_NON_LAZY_SYMBOL_POINTERS ||
|
|
section_type == MachO::S_THREAD_LOCAL_VARIABLE_POINTERS)
|
|
outs() << " (index into indirect symbol table)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " reserved2 " << reserved2;
|
|
if (section_type == MachO::S_SYMBOL_STUBS)
|
|
outs() << " (size of stubs)\n";
|
|
else
|
|
outs() << "\n";
|
|
}
|
|
|
|
static void PrintSymtabLoadCommand(MachO::symtab_command st, uint32_t cputype,
|
|
uint32_t object_size) {
|
|
outs() << " cmd LC_SYMTAB\n";
|
|
outs() << " cmdsize " << st.cmdsize;
|
|
if (st.cmdsize != sizeof(struct MachO::symtab_command))
|
|
outs() << " Incorrect size\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " symoff " << st.symoff;
|
|
if (st.symoff > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " nsyms " << st.nsyms;
|
|
uint64_t big_size;
|
|
if (cputype & MachO::CPU_ARCH_ABI64) {
|
|
big_size = st.nsyms;
|
|
big_size *= sizeof(struct MachO::nlist_64);
|
|
big_size += st.symoff;
|
|
if (big_size > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
} else {
|
|
big_size = st.nsyms;
|
|
big_size *= sizeof(struct MachO::nlist);
|
|
big_size += st.symoff;
|
|
if (big_size > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
}
|
|
outs() << " stroff " << st.stroff;
|
|
if (st.stroff > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " strsize " << st.strsize;
|
|
big_size = st.stroff;
|
|
big_size += st.strsize;
|
|
if (big_size > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
}
|
|
|
|
static void PrintDysymtabLoadCommand(MachO::dysymtab_command dyst,
|
|
uint32_t nsyms, uint32_t object_size,
|
|
uint32_t cputype) {
|
|
outs() << " cmd LC_DYSYMTAB\n";
|
|
outs() << " cmdsize " << dyst.cmdsize;
|
|
if (dyst.cmdsize != sizeof(struct MachO::dysymtab_command))
|
|
outs() << " Incorrect size\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " ilocalsym " << dyst.ilocalsym;
|
|
if (dyst.ilocalsym > nsyms)
|
|
outs() << " (greater than the number of symbols)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " nlocalsym " << dyst.nlocalsym;
|
|
uint64_t big_size;
|
|
big_size = dyst.ilocalsym;
|
|
big_size += dyst.nlocalsym;
|
|
if (big_size > nsyms)
|
|
outs() << " (past the end of the symbol table)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " iextdefsym " << dyst.iextdefsym;
|
|
if (dyst.iextdefsym > nsyms)
|
|
outs() << " (greater than the number of symbols)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " nextdefsym " << dyst.nextdefsym;
|
|
big_size = dyst.iextdefsym;
|
|
big_size += dyst.nextdefsym;
|
|
if (big_size > nsyms)
|
|
outs() << " (past the end of the symbol table)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " iundefsym " << dyst.iundefsym;
|
|
if (dyst.iundefsym > nsyms)
|
|
outs() << " (greater than the number of symbols)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " nundefsym " << dyst.nundefsym;
|
|
big_size = dyst.iundefsym;
|
|
big_size += dyst.nundefsym;
|
|
if (big_size > nsyms)
|
|
outs() << " (past the end of the symbol table)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " tocoff " << dyst.tocoff;
|
|
if (dyst.tocoff > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " ntoc " << dyst.ntoc;
|
|
big_size = dyst.ntoc;
|
|
big_size *= sizeof(struct MachO::dylib_table_of_contents);
|
|
big_size += dyst.tocoff;
|
|
if (big_size > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " modtaboff " << dyst.modtaboff;
|
|
if (dyst.modtaboff > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " nmodtab " << dyst.nmodtab;
|
|
uint64_t modtabend;
|
|
if (cputype & MachO::CPU_ARCH_ABI64) {
|
|
modtabend = dyst.nmodtab;
|
|
modtabend *= sizeof(struct MachO::dylib_module_64);
|
|
modtabend += dyst.modtaboff;
|
|
} else {
|
|
modtabend = dyst.nmodtab;
|
|
modtabend *= sizeof(struct MachO::dylib_module);
|
|
modtabend += dyst.modtaboff;
|
|
}
|
|
if (modtabend > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " extrefsymoff " << dyst.extrefsymoff;
|
|
if (dyst.extrefsymoff > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " nextrefsyms " << dyst.nextrefsyms;
|
|
big_size = dyst.nextrefsyms;
|
|
big_size *= sizeof(struct MachO::dylib_reference);
|
|
big_size += dyst.extrefsymoff;
|
|
if (big_size > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " indirectsymoff " << dyst.indirectsymoff;
|
|
if (dyst.indirectsymoff > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " nindirectsyms " << dyst.nindirectsyms;
|
|
big_size = dyst.nindirectsyms;
|
|
big_size *= sizeof(uint32_t);
|
|
big_size += dyst.indirectsymoff;
|
|
if (big_size > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " extreloff " << dyst.extreloff;
|
|
if (dyst.extreloff > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " nextrel " << dyst.nextrel;
|
|
big_size = dyst.nextrel;
|
|
big_size *= sizeof(struct MachO::relocation_info);
|
|
big_size += dyst.extreloff;
|
|
if (big_size > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " locreloff " << dyst.locreloff;
|
|
if (dyst.locreloff > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " nlocrel " << dyst.nlocrel;
|
|
big_size = dyst.nlocrel;
|
|
big_size *= sizeof(struct MachO::relocation_info);
|
|
big_size += dyst.locreloff;
|
|
if (big_size > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
}
|
|
|
|
static void PrintDyldInfoLoadCommand(MachO::dyld_info_command dc,
|
|
uint32_t object_size) {
|
|
if (dc.cmd == MachO::LC_DYLD_INFO)
|
|
outs() << " cmd LC_DYLD_INFO\n";
|
|
else
|
|
outs() << " cmd LC_DYLD_INFO_ONLY\n";
|
|
outs() << " cmdsize " << dc.cmdsize;
|
|
if (dc.cmdsize != sizeof(struct MachO::dyld_info_command))
|
|
outs() << " Incorrect size\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " rebase_off " << dc.rebase_off;
|
|
if (dc.rebase_off > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " rebase_size " << dc.rebase_size;
|
|
uint64_t big_size;
|
|
big_size = dc.rebase_off;
|
|
big_size += dc.rebase_size;
|
|
if (big_size > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " bind_off " << dc.bind_off;
|
|
if (dc.bind_off > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " bind_size " << dc.bind_size;
|
|
big_size = dc.bind_off;
|
|
big_size += dc.bind_size;
|
|
if (big_size > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " weak_bind_off " << dc.weak_bind_off;
|
|
if (dc.weak_bind_off > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " weak_bind_size " << dc.weak_bind_size;
|
|
big_size = dc.weak_bind_off;
|
|
big_size += dc.weak_bind_size;
|
|
if (big_size > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " lazy_bind_off " << dc.lazy_bind_off;
|
|
if (dc.lazy_bind_off > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " lazy_bind_size " << dc.lazy_bind_size;
|
|
big_size = dc.lazy_bind_off;
|
|
big_size += dc.lazy_bind_size;
|
|
if (big_size > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " export_off " << dc.export_off;
|
|
if (dc.export_off > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " export_size " << dc.export_size;
|
|
big_size = dc.export_off;
|
|
big_size += dc.export_size;
|
|
if (big_size > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
}
|
|
|
|
static void PrintDyldLoadCommand(MachO::dylinker_command dyld,
|
|
const char *Ptr) {
|
|
if (dyld.cmd == MachO::LC_ID_DYLINKER)
|
|
outs() << " cmd LC_ID_DYLINKER\n";
|
|
else if (dyld.cmd == MachO::LC_LOAD_DYLINKER)
|
|
outs() << " cmd LC_LOAD_DYLINKER\n";
|
|
else if (dyld.cmd == MachO::LC_DYLD_ENVIRONMENT)
|
|
outs() << " cmd LC_DYLD_ENVIRONMENT\n";
|
|
else
|
|
outs() << " cmd ?(" << dyld.cmd << ")\n";
|
|
outs() << " cmdsize " << dyld.cmdsize;
|
|
if (dyld.cmdsize < sizeof(struct MachO::dylinker_command))
|
|
outs() << " Incorrect size\n";
|
|
else
|
|
outs() << "\n";
|
|
if (dyld.name >= dyld.cmdsize)
|
|
outs() << " name ?(bad offset " << dyld.name << ")\n";
|
|
else {
|
|
const char *P = (const char *)(Ptr)+dyld.name;
|
|
outs() << " name " << P << " (offset " << dyld.name << ")\n";
|
|
}
|
|
}
|
|
|
|
static void PrintUuidLoadCommand(MachO::uuid_command uuid) {
|
|
outs() << " cmd LC_UUID\n";
|
|
outs() << " cmdsize " << uuid.cmdsize;
|
|
if (uuid.cmdsize != sizeof(struct MachO::uuid_command))
|
|
outs() << " Incorrect size\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " uuid ";
|
|
outs() << format("%02" PRIX32, uuid.uuid[0]);
|
|
outs() << format("%02" PRIX32, uuid.uuid[1]);
|
|
outs() << format("%02" PRIX32, uuid.uuid[2]);
|
|
outs() << format("%02" PRIX32, uuid.uuid[3]);
|
|
outs() << "-";
|
|
outs() << format("%02" PRIX32, uuid.uuid[4]);
|
|
outs() << format("%02" PRIX32, uuid.uuid[5]);
|
|
outs() << "-";
|
|
outs() << format("%02" PRIX32, uuid.uuid[6]);
|
|
outs() << format("%02" PRIX32, uuid.uuid[7]);
|
|
outs() << "-";
|
|
outs() << format("%02" PRIX32, uuid.uuid[8]);
|
|
outs() << format("%02" PRIX32, uuid.uuid[9]);
|
|
outs() << "-";
|
|
outs() << format("%02" PRIX32, uuid.uuid[10]);
|
|
outs() << format("%02" PRIX32, uuid.uuid[11]);
|
|
outs() << format("%02" PRIX32, uuid.uuid[12]);
|
|
outs() << format("%02" PRIX32, uuid.uuid[13]);
|
|
outs() << format("%02" PRIX32, uuid.uuid[14]);
|
|
outs() << format("%02" PRIX32, uuid.uuid[15]);
|
|
outs() << "\n";
|
|
}
|
|
|
|
static void PrintVersionMinLoadCommand(MachO::version_min_command vd) {
|
|
if (vd.cmd == MachO::LC_VERSION_MIN_MACOSX)
|
|
outs() << " cmd LC_VERSION_MIN_MACOSX\n";
|
|
else if (vd.cmd == MachO::LC_VERSION_MIN_IPHONEOS)
|
|
outs() << " cmd LC_VERSION_MIN_IPHONEOS\n";
|
|
else
|
|
outs() << " cmd " << vd.cmd << " (?)\n";
|
|
outs() << " cmdsize " << vd.cmdsize;
|
|
if (vd.cmdsize != sizeof(struct MachO::version_min_command))
|
|
outs() << " Incorrect size\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " version " << ((vd.version >> 16) & 0xffff) << "."
|
|
<< ((vd.version >> 8) & 0xff);
|
|
if ((vd.version & 0xff) != 0)
|
|
outs() << "." << (vd.version & 0xff);
|
|
outs() << "\n";
|
|
if (vd.sdk == 0)
|
|
outs() << " sdk n/a\n";
|
|
else {
|
|
outs() << " sdk " << ((vd.sdk >> 16) & 0xffff) << "."
|
|
<< ((vd.sdk >> 8) & 0xff);
|
|
}
|
|
if ((vd.sdk & 0xff) != 0)
|
|
outs() << "." << (vd.sdk & 0xff);
|
|
outs() << "\n";
|
|
}
|
|
|
|
static void PrintSourceVersionCommand(MachO::source_version_command sd) {
|
|
outs() << " cmd LC_SOURCE_VERSION\n";
|
|
outs() << " cmdsize " << sd.cmdsize;
|
|
if (sd.cmdsize != sizeof(struct MachO::source_version_command))
|
|
outs() << " Incorrect size\n";
|
|
else
|
|
outs() << "\n";
|
|
uint64_t a = (sd.version >> 40) & 0xffffff;
|
|
uint64_t b = (sd.version >> 30) & 0x3ff;
|
|
uint64_t c = (sd.version >> 20) & 0x3ff;
|
|
uint64_t d = (sd.version >> 10) & 0x3ff;
|
|
uint64_t e = sd.version & 0x3ff;
|
|
outs() << " version " << a << "." << b;
|
|
if (e != 0)
|
|
outs() << "." << c << "." << d << "." << e;
|
|
else if (d != 0)
|
|
outs() << "." << c << "." << d;
|
|
else if (c != 0)
|
|
outs() << "." << c;
|
|
outs() << "\n";
|
|
}
|
|
|
|
static void PrintEntryPointCommand(MachO::entry_point_command ep) {
|
|
outs() << " cmd LC_MAIN\n";
|
|
outs() << " cmdsize " << ep.cmdsize;
|
|
if (ep.cmdsize != sizeof(struct MachO::entry_point_command))
|
|
outs() << " Incorrect size\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " entryoff " << ep.entryoff << "\n";
|
|
outs() << " stacksize " << ep.stacksize << "\n";
|
|
}
|
|
|
|
static void PrintDylibCommand(MachO::dylib_command dl, const char *Ptr) {
|
|
if (dl.cmd == MachO::LC_ID_DYLIB)
|
|
outs() << " cmd LC_ID_DYLIB\n";
|
|
else if (dl.cmd == MachO::LC_LOAD_DYLIB)
|
|
outs() << " cmd LC_LOAD_DYLIB\n";
|
|
else if (dl.cmd == MachO::LC_LOAD_WEAK_DYLIB)
|
|
outs() << " cmd LC_LOAD_WEAK_DYLIB\n";
|
|
else if (dl.cmd == MachO::LC_REEXPORT_DYLIB)
|
|
outs() << " cmd LC_REEXPORT_DYLIB\n";
|
|
else if (dl.cmd == MachO::LC_LAZY_LOAD_DYLIB)
|
|
outs() << " cmd LC_LAZY_LOAD_DYLIB\n";
|
|
else if (dl.cmd == MachO::LC_LOAD_UPWARD_DYLIB)
|
|
outs() << " cmd LC_LOAD_UPWARD_DYLIB\n";
|
|
else
|
|
outs() << " cmd " << dl.cmd << " (unknown)\n";
|
|
outs() << " cmdsize " << dl.cmdsize;
|
|
if (dl.cmdsize < sizeof(struct MachO::dylib_command))
|
|
outs() << " Incorrect size\n";
|
|
else
|
|
outs() << "\n";
|
|
if (dl.dylib.name < dl.cmdsize) {
|
|
const char *P = (const char *)(Ptr)+dl.dylib.name;
|
|
outs() << " name " << P << " (offset " << dl.dylib.name << ")\n";
|
|
} else {
|
|
outs() << " name ?(bad offset " << dl.dylib.name << ")\n";
|
|
}
|
|
outs() << " time stamp " << dl.dylib.timestamp << " ";
|
|
time_t t = dl.dylib.timestamp;
|
|
outs() << ctime(&t);
|
|
outs() << " current version ";
|
|
if (dl.dylib.current_version == 0xffffffff)
|
|
outs() << "n/a\n";
|
|
else
|
|
outs() << ((dl.dylib.current_version >> 16) & 0xffff) << "."
|
|
<< ((dl.dylib.current_version >> 8) & 0xff) << "."
|
|
<< (dl.dylib.current_version & 0xff) << "\n";
|
|
outs() << "compatibility version ";
|
|
if (dl.dylib.compatibility_version == 0xffffffff)
|
|
outs() << "n/a\n";
|
|
else
|
|
outs() << ((dl.dylib.compatibility_version >> 16) & 0xffff) << "."
|
|
<< ((dl.dylib.compatibility_version >> 8) & 0xff) << "."
|
|
<< (dl.dylib.compatibility_version & 0xff) << "\n";
|
|
}
|
|
|
|
static void PrintLinkEditDataCommand(MachO::linkedit_data_command ld,
|
|
uint32_t object_size) {
|
|
if (ld.cmd == MachO::LC_CODE_SIGNATURE)
|
|
outs() << " cmd LC_FUNCTION_STARTS\n";
|
|
else if (ld.cmd == MachO::LC_SEGMENT_SPLIT_INFO)
|
|
outs() << " cmd LC_SEGMENT_SPLIT_INFO\n";
|
|
else if (ld.cmd == MachO::LC_FUNCTION_STARTS)
|
|
outs() << " cmd LC_FUNCTION_STARTS\n";
|
|
else if (ld.cmd == MachO::LC_DATA_IN_CODE)
|
|
outs() << " cmd LC_DATA_IN_CODE\n";
|
|
else if (ld.cmd == MachO::LC_DYLIB_CODE_SIGN_DRS)
|
|
outs() << " cmd LC_DYLIB_CODE_SIGN_DRS\n";
|
|
else if (ld.cmd == MachO::LC_LINKER_OPTIMIZATION_HINT)
|
|
outs() << " cmd LC_LINKER_OPTIMIZATION_HINT\n";
|
|
else
|
|
outs() << " cmd " << ld.cmd << " (?)\n";
|
|
outs() << " cmdsize " << ld.cmdsize;
|
|
if (ld.cmdsize != sizeof(struct MachO::linkedit_data_command))
|
|
outs() << " Incorrect size\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " dataoff " << ld.dataoff;
|
|
if (ld.dataoff > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
outs() << " datasize " << ld.datasize;
|
|
uint64_t big_size = ld.dataoff;
|
|
big_size += ld.datasize;
|
|
if (big_size > object_size)
|
|
outs() << " (past end of file)\n";
|
|
else
|
|
outs() << "\n";
|
|
}
|
|
|
|
static void PrintLoadCommands(const MachOObjectFile *Obj, uint32_t ncmds,
|
|
uint32_t filetype, uint32_t cputype,
|
|
bool verbose) {
|
|
StringRef Buf = Obj->getData();
|
|
MachOObjectFile::LoadCommandInfo Command = Obj->getFirstLoadCommandInfo();
|
|
for (unsigned i = 0;; ++i) {
|
|
outs() << "Load command " << i << "\n";
|
|
if (Command.C.cmd == MachO::LC_SEGMENT) {
|
|
MachO::segment_command SLC = Obj->getSegmentLoadCommand(Command);
|
|
const char *sg_segname = SLC.segname;
|
|
PrintSegmentCommand(SLC.cmd, SLC.cmdsize, SLC.segname, SLC.vmaddr,
|
|
SLC.vmsize, SLC.fileoff, SLC.filesize, SLC.maxprot,
|
|
SLC.initprot, SLC.nsects, SLC.flags, Buf.size(),
|
|
verbose);
|
|
for (unsigned j = 0; j < SLC.nsects; j++) {
|
|
MachO::section_64 S = Obj->getSection64(Command, j);
|
|
PrintSection(S.sectname, S.segname, S.addr, S.size, S.offset, S.align,
|
|
S.reloff, S.nreloc, S.flags, S.reserved1, S.reserved2,
|
|
SLC.cmd, sg_segname, filetype, Buf.size(), verbose);
|
|
}
|
|
} else if (Command.C.cmd == MachO::LC_SEGMENT_64) {
|
|
MachO::segment_command_64 SLC_64 = Obj->getSegment64LoadCommand(Command);
|
|
const char *sg_segname = SLC_64.segname;
|
|
PrintSegmentCommand(SLC_64.cmd, SLC_64.cmdsize, SLC_64.segname,
|
|
SLC_64.vmaddr, SLC_64.vmsize, SLC_64.fileoff,
|
|
SLC_64.filesize, SLC_64.maxprot, SLC_64.initprot,
|
|
SLC_64.nsects, SLC_64.flags, Buf.size(), verbose);
|
|
for (unsigned j = 0; j < SLC_64.nsects; j++) {
|
|
MachO::section_64 S_64 = Obj->getSection64(Command, j);
|
|
PrintSection(S_64.sectname, S_64.segname, S_64.addr, S_64.size,
|
|
S_64.offset, S_64.align, S_64.reloff, S_64.nreloc,
|
|
S_64.flags, S_64.reserved1, S_64.reserved2, SLC_64.cmd,
|
|
sg_segname, filetype, Buf.size(), verbose);
|
|
}
|
|
} else if (Command.C.cmd == MachO::LC_SYMTAB) {
|
|
MachO::symtab_command Symtab = Obj->getSymtabLoadCommand();
|
|
PrintSymtabLoadCommand(Symtab, cputype, Buf.size());
|
|
} else if (Command.C.cmd == MachO::LC_DYSYMTAB) {
|
|
MachO::dysymtab_command Dysymtab = Obj->getDysymtabLoadCommand();
|
|
MachO::symtab_command Symtab = Obj->getSymtabLoadCommand();
|
|
PrintDysymtabLoadCommand(Dysymtab, Symtab.nsyms, Buf.size(), cputype);
|
|
} else if (Command.C.cmd == MachO::LC_DYLD_INFO ||
|
|
Command.C.cmd == MachO::LC_DYLD_INFO_ONLY) {
|
|
MachO::dyld_info_command DyldInfo = Obj->getDyldInfoLoadCommand(Command);
|
|
PrintDyldInfoLoadCommand(DyldInfo, Buf.size());
|
|
} else if (Command.C.cmd == MachO::LC_LOAD_DYLINKER ||
|
|
Command.C.cmd == MachO::LC_ID_DYLINKER ||
|
|
Command.C.cmd == MachO::LC_DYLD_ENVIRONMENT) {
|
|
MachO::dylinker_command Dyld = Obj->getDylinkerCommand(Command);
|
|
PrintDyldLoadCommand(Dyld, Command.Ptr);
|
|
} else if (Command.C.cmd == MachO::LC_UUID) {
|
|
MachO::uuid_command Uuid = Obj->getUuidCommand(Command);
|
|
PrintUuidLoadCommand(Uuid);
|
|
} else if (Command.C.cmd == MachO::LC_VERSION_MIN_MACOSX) {
|
|
MachO::version_min_command Vd = Obj->getVersionMinLoadCommand(Command);
|
|
PrintVersionMinLoadCommand(Vd);
|
|
} else if (Command.C.cmd == MachO::LC_SOURCE_VERSION) {
|
|
MachO::source_version_command Sd = Obj->getSourceVersionCommand(Command);
|
|
PrintSourceVersionCommand(Sd);
|
|
} else if (Command.C.cmd == MachO::LC_MAIN) {
|
|
MachO::entry_point_command Ep = Obj->getEntryPointCommand(Command);
|
|
PrintEntryPointCommand(Ep);
|
|
} else if (Command.C.cmd == MachO::LC_LOAD_DYLIB) {
|
|
MachO::dylib_command Dl = Obj->getDylibIDLoadCommand(Command);
|
|
PrintDylibCommand(Dl, Command.Ptr);
|
|
} else if (Command.C.cmd == MachO::LC_CODE_SIGNATURE ||
|
|
Command.C.cmd == MachO::LC_SEGMENT_SPLIT_INFO ||
|
|
Command.C.cmd == MachO::LC_FUNCTION_STARTS ||
|
|
Command.C.cmd == MachO::LC_DATA_IN_CODE ||
|
|
Command.C.cmd == MachO::LC_DYLIB_CODE_SIGN_DRS ||
|
|
Command.C.cmd == MachO::LC_LINKER_OPTIMIZATION_HINT) {
|
|
MachO::linkedit_data_command Ld =
|
|
Obj->getLinkeditDataLoadCommand(Command);
|
|
PrintLinkEditDataCommand(Ld, Buf.size());
|
|
} else {
|
|
outs() << " cmd ?(" << format("0x%08" PRIx32, Command.C.cmd)
|
|
<< ")\n";
|
|
outs() << " cmdsize " << Command.C.cmdsize << "\n";
|
|
// TODO: get and print the raw bytes of the load command.
|
|
}
|
|
// TODO: print all the other kinds of load commands.
|
|
if (i == ncmds - 1)
|
|
break;
|
|
else
|
|
Command = Obj->getNextLoadCommandInfo(Command);
|
|
}
|
|
}
|
|
|
|
static void getAndPrintMachHeader(const MachOObjectFile *Obj, uint32_t &ncmds,
|
|
uint32_t &filetype, uint32_t &cputype,
|
|
bool verbose) {
|
|
if (Obj->is64Bit()) {
|
|
MachO::mach_header_64 H_64;
|
|
H_64 = Obj->getHeader64();
|
|
PrintMachHeader(H_64.magic, H_64.cputype, H_64.cpusubtype, H_64.filetype,
|
|
H_64.ncmds, H_64.sizeofcmds, H_64.flags, verbose);
|
|
ncmds = H_64.ncmds;
|
|
filetype = H_64.filetype;
|
|
cputype = H_64.cputype;
|
|
} else {
|
|
MachO::mach_header H;
|
|
H = Obj->getHeader();
|
|
PrintMachHeader(H.magic, H.cputype, H.cpusubtype, H.filetype, H.ncmds,
|
|
H.sizeofcmds, H.flags, verbose);
|
|
ncmds = H.ncmds;
|
|
filetype = H.filetype;
|
|
cputype = H.cputype;
|
|
}
|
|
}
|
|
|
|
void llvm::printMachOFileHeader(const object::ObjectFile *Obj) {
|
|
const MachOObjectFile *file = dyn_cast<const MachOObjectFile>(Obj);
|
|
uint32_t ncmds = 0;
|
|
uint32_t filetype = 0;
|
|
uint32_t cputype = 0;
|
|
getAndPrintMachHeader(file, ncmds, filetype, cputype, true);
|
|
PrintLoadCommands(file, ncmds, filetype, cputype, true);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// export trie dumping
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
void llvm::printMachOExportsTrie(const object::MachOObjectFile *Obj) {
|
|
for (const llvm::object::ExportEntry &Entry : Obj->exports()) {
|
|
uint64_t Flags = Entry.flags();
|
|
bool ReExport = (Flags & MachO::EXPORT_SYMBOL_FLAGS_REEXPORT);
|
|
bool WeakDef = (Flags & MachO::EXPORT_SYMBOL_FLAGS_WEAK_DEFINITION);
|
|
bool ThreadLocal = ((Flags & MachO::EXPORT_SYMBOL_FLAGS_KIND_MASK) ==
|
|
MachO::EXPORT_SYMBOL_FLAGS_KIND_THREAD_LOCAL);
|
|
bool Abs = ((Flags & MachO::EXPORT_SYMBOL_FLAGS_KIND_MASK) ==
|
|
MachO::EXPORT_SYMBOL_FLAGS_KIND_ABSOLUTE);
|
|
bool Resolver = (Flags & MachO::EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER);
|
|
if (ReExport)
|
|
outs() << "[re-export] ";
|
|
else
|
|
outs()
|
|
<< format("0x%08llX ", Entry.address()); // FIXME:add in base address
|
|
outs() << Entry.name();
|
|
if (WeakDef || ThreadLocal || Resolver || Abs) {
|
|
bool NeedsComma = false;
|
|
outs() << " [";
|
|
if (WeakDef) {
|
|
outs() << "weak_def";
|
|
NeedsComma = true;
|
|
}
|
|
if (ThreadLocal) {
|
|
if (NeedsComma)
|
|
outs() << ", ";
|
|
outs() << "per-thread";
|
|
NeedsComma = true;
|
|
}
|
|
if (Abs) {
|
|
if (NeedsComma)
|
|
outs() << ", ";
|
|
outs() << "absolute";
|
|
NeedsComma = true;
|
|
}
|
|
if (Resolver) {
|
|
if (NeedsComma)
|
|
outs() << ", ";
|
|
outs() << format("resolver=0x%08llX", Entry.other());
|
|
NeedsComma = true;
|
|
}
|
|
outs() << "]";
|
|
}
|
|
if (ReExport) {
|
|
StringRef DylibName = "unknown";
|
|
int Ordinal = Entry.other() - 1;
|
|
Obj->getLibraryShortNameByIndex(Ordinal, DylibName);
|
|
if (Entry.otherName().empty())
|
|
outs() << " (from " << DylibName << ")";
|
|
else
|
|
outs() << " (" << Entry.otherName() << " from " << DylibName << ")";
|
|
}
|
|
outs() << "\n";
|
|
}
|
|
}
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// rebase table dumping
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
namespace {
|
|
class SegInfo {
|
|
public:
|
|
SegInfo(const object::MachOObjectFile *Obj);
|
|
|
|
StringRef segmentName(uint32_t SegIndex);
|
|
StringRef sectionName(uint32_t SegIndex, uint64_t SegOffset);
|
|
uint64_t address(uint32_t SegIndex, uint64_t SegOffset);
|
|
|
|
private:
|
|
struct SectionInfo {
|
|
uint64_t Address;
|
|
uint64_t Size;
|
|
StringRef SectionName;
|
|
StringRef SegmentName;
|
|
uint64_t OffsetInSegment;
|
|
uint64_t SegmentStartAddress;
|
|
uint32_t SegmentIndex;
|
|
};
|
|
const SectionInfo &findSection(uint32_t SegIndex, uint64_t SegOffset);
|
|
SmallVector<SectionInfo, 32> Sections;
|
|
};
|
|
}
|
|
|
|
SegInfo::SegInfo(const object::MachOObjectFile *Obj) {
|
|
// Build table of sections so segIndex/offset pairs can be translated.
|
|
uint32_t CurSegIndex = Obj->hasPageZeroSegment() ? 1 : 0;
|
|
StringRef CurSegName;
|
|
uint64_t CurSegAddress;
|
|
for (const SectionRef &Section : Obj->sections()) {
|
|
SectionInfo Info;
|
|
if (error(Section.getName(Info.SectionName)))
|
|
return;
|
|
if (error(Section.getAddress(Info.Address)))
|
|
return;
|
|
if (error(Section.getSize(Info.Size)))
|
|
return;
|
|
Info.SegmentName =
|
|
Obj->getSectionFinalSegmentName(Section.getRawDataRefImpl());
|
|
if (!Info.SegmentName.equals(CurSegName)) {
|
|
++CurSegIndex;
|
|
CurSegName = Info.SegmentName;
|
|
CurSegAddress = Info.Address;
|
|
}
|
|
Info.SegmentIndex = CurSegIndex - 1;
|
|
Info.OffsetInSegment = Info.Address - CurSegAddress;
|
|
Info.SegmentStartAddress = CurSegAddress;
|
|
Sections.push_back(Info);
|
|
}
|
|
}
|
|
|
|
StringRef SegInfo::segmentName(uint32_t SegIndex) {
|
|
for (const SectionInfo &SI : Sections) {
|
|
if (SI.SegmentIndex == SegIndex)
|
|
return SI.SegmentName;
|
|
}
|
|
llvm_unreachable("invalid segIndex");
|
|
}
|
|
|
|
const SegInfo::SectionInfo &SegInfo::findSection(uint32_t SegIndex,
|
|
uint64_t OffsetInSeg) {
|
|
for (const SectionInfo &SI : Sections) {
|
|
if (SI.SegmentIndex != SegIndex)
|
|
continue;
|
|
if (SI.OffsetInSegment > OffsetInSeg)
|
|
continue;
|
|
if (OffsetInSeg >= (SI.OffsetInSegment + SI.Size))
|
|
continue;
|
|
return SI;
|
|
}
|
|
llvm_unreachable("segIndex and offset not in any section");
|
|
}
|
|
|
|
StringRef SegInfo::sectionName(uint32_t SegIndex, uint64_t OffsetInSeg) {
|
|
return findSection(SegIndex, OffsetInSeg).SectionName;
|
|
}
|
|
|
|
uint64_t SegInfo::address(uint32_t SegIndex, uint64_t OffsetInSeg) {
|
|
const SectionInfo &SI = findSection(SegIndex, OffsetInSeg);
|
|
return SI.SegmentStartAddress + OffsetInSeg;
|
|
}
|
|
|
|
void llvm::printMachORebaseTable(const object::MachOObjectFile *Obj) {
|
|
// Build table of sections so names can used in final output.
|
|
SegInfo sectionTable(Obj);
|
|
|
|
outs() << "segment section address type\n";
|
|
for (const llvm::object::MachORebaseEntry &Entry : Obj->rebaseTable()) {
|
|
uint32_t SegIndex = Entry.segmentIndex();
|
|
uint64_t OffsetInSeg = Entry.segmentOffset();
|
|
StringRef SegmentName = sectionTable.segmentName(SegIndex);
|
|
StringRef SectionName = sectionTable.sectionName(SegIndex, OffsetInSeg);
|
|
uint64_t Address = sectionTable.address(SegIndex, OffsetInSeg);
|
|
|
|
// Table lines look like: __DATA __nl_symbol_ptr 0x0000F00C pointer
|
|
outs() << format("%-8s %-18s 0x%08" PRIX64 " %s\n",
|
|
SegmentName.str().c_str(),
|
|
SectionName.str().c_str(), Address,
|
|
Entry.typeName().str().c_str());
|
|
}
|
|
}
|
|
|
|
static StringRef ordinalName(const object::MachOObjectFile *Obj, int Ordinal) {
|
|
StringRef DylibName;
|
|
switch (Ordinal) {
|
|
case MachO::BIND_SPECIAL_DYLIB_SELF:
|
|
return "this-image";
|
|
case MachO::BIND_SPECIAL_DYLIB_MAIN_EXECUTABLE:
|
|
return "main-executable";
|
|
case MachO::BIND_SPECIAL_DYLIB_FLAT_LOOKUP:
|
|
return "flat-namespace";
|
|
default:
|
|
if (Ordinal > 0) {
|
|
std::error_code EC = Obj->getLibraryShortNameByIndex(Ordinal-1,
|
|
DylibName);
|
|
if (EC)
|
|
return "<<ordinal too big>>";
|
|
return DylibName;
|
|
}
|
|
}
|
|
return "<<unknown special ordinal>>";
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// bind table dumping
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
void llvm::printMachOBindTable(const object::MachOObjectFile *Obj) {
|
|
// Build table of sections so names can used in final output.
|
|
SegInfo sectionTable(Obj);
|
|
|
|
outs() << "segment section address type "
|
|
"addend dylib symbol\n";
|
|
for (const llvm::object::MachOBindEntry &Entry : Obj->bindTable()) {
|
|
uint32_t SegIndex = Entry.segmentIndex();
|
|
uint64_t OffsetInSeg = Entry.segmentOffset();
|
|
StringRef SegmentName = sectionTable.segmentName(SegIndex);
|
|
StringRef SectionName = sectionTable.sectionName(SegIndex, OffsetInSeg);
|
|
uint64_t Address = sectionTable.address(SegIndex, OffsetInSeg);
|
|
|
|
// Table lines look like:
|
|
// __DATA __got 0x00012010 pointer 0 libSystem ___stack_chk_guard
|
|
outs() << format("%-8s %-18s 0x%08" PRIX64 " %-8s %-8" PRId64 " %-20s",
|
|
SegmentName.str().c_str(),
|
|
SectionName.str().c_str(),
|
|
Address,
|
|
Entry.typeName().str().c_str(),
|
|
Entry.addend(),
|
|
ordinalName(Obj, Entry.ordinal()).str().c_str())
|
|
<< Entry.symbolName();
|
|
if (Entry.flags() & MachO::BIND_SYMBOL_FLAGS_WEAK_IMPORT)
|
|
outs() << " (weak_import)\n";
|
|
else
|
|
outs() << "\n";
|
|
}
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// lazy bind table dumping
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
void llvm::printMachOLazyBindTable(const object::MachOObjectFile *Obj) {
|
|
// Build table of sections so names can used in final output.
|
|
SegInfo sectionTable(Obj);
|
|
|
|
outs() << "segment section address "
|
|
"dylib symbol\n";
|
|
for (const llvm::object::MachOBindEntry &Entry : Obj->lazyBindTable()) {
|
|
uint32_t SegIndex = Entry.segmentIndex();
|
|
uint64_t OffsetInSeg = Entry.segmentOffset();
|
|
StringRef SegmentName = sectionTable.segmentName(SegIndex);
|
|
StringRef SectionName = sectionTable.sectionName(SegIndex, OffsetInSeg);
|
|
uint64_t Address = sectionTable.address(SegIndex, OffsetInSeg);
|
|
|
|
// Table lines look like:
|
|
// __DATA __got 0x00012010 libSystem ___stack_chk_guard
|
|
outs() << format("%-8s %-18s 0x%08" PRIX64 " %-20s",
|
|
SegmentName.str().c_str(),
|
|
SectionName.str().c_str(),
|
|
Address,
|
|
ordinalName(Obj, Entry.ordinal()).str().c_str())
|
|
<< Entry.symbolName() << "\n";
|
|
}
|
|
}
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// weak bind table dumping
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
void llvm::printMachOWeakBindTable(const object::MachOObjectFile *Obj) {
|
|
// Build table of sections so names can used in final output.
|
|
SegInfo sectionTable(Obj);
|
|
|
|
outs() << "segment section address "
|
|
"type addend symbol\n";
|
|
for (const llvm::object::MachOBindEntry &Entry : Obj->weakBindTable()) {
|
|
// Strong symbols don't have a location to update.
|
|
if (Entry.flags() & MachO::BIND_SYMBOL_FLAGS_NON_WEAK_DEFINITION) {
|
|
outs() << " strong "
|
|
<< Entry.symbolName() << "\n";
|
|
continue;
|
|
}
|
|
uint32_t SegIndex = Entry.segmentIndex();
|
|
uint64_t OffsetInSeg = Entry.segmentOffset();
|
|
StringRef SegmentName = sectionTable.segmentName(SegIndex);
|
|
StringRef SectionName = sectionTable.sectionName(SegIndex, OffsetInSeg);
|
|
uint64_t Address = sectionTable.address(SegIndex, OffsetInSeg);
|
|
|
|
// Table lines look like:
|
|
// __DATA __data 0x00001000 pointer 0 _foo
|
|
outs() << format("%-8s %-18s 0x%08" PRIX64 " %-8s %-8" PRId64 " ",
|
|
SegmentName.str().c_str(),
|
|
SectionName.str().c_str(),
|
|
Address,
|
|
Entry.typeName().str().c_str(),
|
|
Entry.addend())
|
|
<< Entry.symbolName() << "\n";
|
|
}
|
|
}
|
|
|
|
|