//===----------------------------------------------------------------------===//
#include "llvm-objdump.h"
-#include "llvm/ADT/OwningPtr.h"
+#include "llvm-c/Disassembler.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/Triple.h"
+#include "llvm/Config/config.h"
#include "llvm/DebugInfo/DIContext.h"
#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCDisassembler.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCInstPrinter.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
+#include "llvm/Support/Endian.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/GraphWriter.h"
#include "llvm/Support/MachO.h"
#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/FormattedStream.h"
#include "llvm/Support/TargetRegistry.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Support/raw_ostream.h"
-#include "llvm/Support/system_error.h"
#include <algorithm>
#include <cstring>
+#include <system_error>
+
+#if HAVE_CXXABI_H
+#include <cxxabi.h>
+#endif
+
using namespace llvm;
using namespace object;
static cl::opt<std::string>
DSYMFile("dsym", cl::desc("Use .dSYM file for debug info"));
-static const Target *GetTarget(const MachOObjectFile *MachOObj) {
+static cl::opt<bool>
+ FullLeadingAddr("full-leading-addr",
+ cl::desc("Print full leading address"));
+
+static cl::opt<bool>
+ PrintImmHex("print-imm-hex",
+ cl::desc("Use hex format for immediate values"));
+
+static std::string ThumbTripleName;
+
+static const Target *GetTarget(const MachOObjectFile *MachOObj,
+ const char **McpuDefault,
+ const Target **ThumbTarget) {
// Figure out the target triple.
if (TripleName.empty()) {
llvm::Triple TT("unknown-unknown-unknown");
- TT.setArch(Triple::ArchType(MachOObj->getArch()));
+ llvm::Triple ThumbTriple = Triple();
+ TT = MachOObj->getArch(McpuDefault, &ThumbTriple);
TripleName = TT.str();
+ ThumbTripleName = ThumbTriple.str();
}
// Get the target specific parser.
std::string Error;
const Target *TheTarget = TargetRegistry::lookupTarget(TripleName, Error);
- if (TheTarget)
+ if (TheTarget && ThumbTripleName.empty())
return TheTarget;
- errs() << "llvm-objdump: error: unable to get target for '" << TripleName
- << "', see --version and --triple.\n";
- return 0;
+ *ThumbTarget = TargetRegistry::lookupTarget(ThumbTripleName, Error);
+ if (*ThumbTarget)
+ return TheTarget;
+
+ errs() << "llvm-objdump: error: unable to get target for '";
+ if (!TheTarget)
+ errs() << TripleName;
+ else
+ errs() << ThumbTripleName;
+ errs() << "', see --version and --triple.\n";
+ return nullptr;
}
struct SymbolSorter {
uint64_t Value;
switch (Kind) {
- case macho::Data:
+ case MachO::DICE_KIND_DATA:
switch (Size) {
case 4:
Value = bytes[3] << 24 |
}
outs() << "\t@ KIND_DATA\n";
break;
- case macho::JumpTable8:
+ case MachO::DICE_KIND_JUMP_TABLE8:
Value = bytes[0];
outs() << "\t.byte " << Value << "\t@ KIND_JUMP_TABLE8";
break;
- case macho::JumpTable16:
+ case MachO::DICE_KIND_JUMP_TABLE16:
Value = bytes[1] << 8 |
bytes[0];
outs() << "\t.short " << Value << "\t@ KIND_JUMP_TABLE16";
break;
- case macho::JumpTable32:
+ case MachO::DICE_KIND_JUMP_TABLE32:
Value = bytes[3] << 24 |
bytes[2] << 16 |
bytes[1] << 8 |
}
}
-static void
-getSectionsAndSymbols(const macho::Header Header,
- MachOObjectFile *MachOObj,
- std::vector<SectionRef> &Sections,
- std::vector<SymbolRef> &Symbols,
- SmallVectorImpl<uint64_t> &FoundFns,
- uint64_t &BaseSegmentAddress) {
- error_code ec;
- for (symbol_iterator SI = MachOObj->begin_symbols(),
- SE = MachOObj->end_symbols(); SI != SE; SI.increment(ec))
- Symbols.push_back(*SI);
-
- for (section_iterator SI = MachOObj->begin_sections(),
- SE = MachOObj->end_sections(); SI != SE; SI.increment(ec)) {
- SectionRef SR = *SI;
+static void getSectionsAndSymbols(const MachO::mach_header Header,
+ MachOObjectFile *MachOObj,
+ std::vector<SectionRef> &Sections,
+ std::vector<SymbolRef> &Symbols,
+ SmallVectorImpl<uint64_t> &FoundFns,
+ uint64_t &BaseSegmentAddress) {
+ for (const SymbolRef &Symbol : MachOObj->symbols())
+ Symbols.push_back(Symbol);
+
+ for (const SectionRef &Section : MachOObj->sections()) {
StringRef SectName;
- SR.getName(SectName);
- Sections.push_back(*SI);
+ Section.getName(SectName);
+ Sections.push_back(Section);
}
MachOObjectFile::LoadCommandInfo Command =
- MachOObj->getFirstLoadCommandInfo();
+ MachOObj->getFirstLoadCommandInfo();
bool BaseSegmentAddressSet = false;
for (unsigned i = 0; ; ++i) {
- if (Command.C.Type == macho::LCT_FunctionStarts) {
+ if (Command.C.cmd == MachO::LC_FUNCTION_STARTS) {
// We found a function starts segment, parse the addresses for later
// consumption.
- macho::LinkeditDataLoadCommand LLC =
+ MachO::linkedit_data_command LLC =
MachOObj->getLinkeditDataLoadCommand(Command);
- MachOObj->ReadULEB128s(LLC.DataOffset, FoundFns);
+ MachOObj->ReadULEB128s(LLC.dataoff, FoundFns);
}
- else if (Command.C.Type == macho::LCT_Segment) {
- macho::SegmentLoadCommand SLC =
+ else if (Command.C.cmd == MachO::LC_SEGMENT) {
+ MachO::segment_command SLC =
MachOObj->getSegmentLoadCommand(Command);
- StringRef SegName = SLC.Name;
+ StringRef SegName = SLC.segname;
if(!BaseSegmentAddressSet && SegName != "__PAGEZERO") {
BaseSegmentAddressSet = true;
- BaseSegmentAddress = SLC.VMAddress;
+ BaseSegmentAddress = SLC.vmaddr;
}
}
- if (i == Header.NumLoadCommands - 1)
+ if (i == Header.ncmds - 1)
break;
else
Command = MachOObj->getNextLoadCommandInfo(Command);
MachOObjectFile *MachOOF);
void llvm::DisassembleInputMachO(StringRef Filename) {
- OwningPtr<MemoryBuffer> Buff;
-
- if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename, Buff)) {
- errs() << "llvm-objdump: " << Filename << ": " << ec.message() << "\n";
+ ErrorOr<std::unique_ptr<MemoryBuffer>> BuffOrErr =
+ MemoryBuffer::getFileOrSTDIN(Filename);
+ if (std::error_code EC = BuffOrErr.getError()) {
+ errs() << "llvm-objdump: " << Filename << ": " << EC.message() << "\n";
return;
}
+ std::unique_ptr<MemoryBuffer> Buff = std::move(BuffOrErr.get());
- OwningPtr<MachOObjectFile> MachOOF(static_cast<MachOObjectFile*>(
- ObjectFile::createMachOObjectFile(Buff.take())));
+ std::unique_ptr<MachOObjectFile> MachOOF = std::move(
+ ObjectFile::createMachOObjectFile(Buff.get()->getMemBufferRef()).get());
DisassembleInputMachO2(Filename, MachOOF.get());
}
+typedef DenseMap<uint64_t, StringRef> SymbolAddressMap;
+typedef std::pair<uint64_t, const char *> BindInfoEntry;
+typedef std::vector<BindInfoEntry> BindTable;
+typedef BindTable::iterator bind_table_iterator;
+
+// The block of info used by the Symbolizer call backs.
+struct DisassembleInfo {
+ bool verbose;
+ MachOObjectFile *O;
+ SectionRef S;
+ SymbolAddressMap *AddrMap;
+ std::vector<SectionRef> *Sections;
+ const char *class_name;
+ const char *selector_name;
+ char *method;
+ char *demangled_name;
+ BindTable *bindtable;
+};
+
+// SymbolizerGetOpInfo() is the operand information call back function.
+// This is called to get the symbolic information for operand(s) of an
+// instruction when it is being done. This routine does this from
+// the relocation information, symbol table, etc. That block of information
+// is a pointer to the struct DisassembleInfo that was passed when the
+// disassembler context was created and passed to back to here when
+// called back by the disassembler for instruction operands that could have
+// relocation information. The address of the instruction containing operand is
+// at the Pc parameter. The immediate value the operand has is passed in
+// op_info->Value and is at Offset past the start of the instruction and has a
+// byte Size of 1, 2 or 4. The symbolc information is returned in TagBuf is the
+// LLVMOpInfo1 struct defined in the header "llvm-c/Disassembler.h" as symbol
+// names and addends of the symbolic expression to add for the operand. The
+// value of TagType is currently 1 (for the LLVMOpInfo1 struct). If symbolic
+// information is returned then this function returns 1 else it returns 0.
+int SymbolizerGetOpInfo(void *DisInfo, uint64_t Pc, uint64_t Offset,
+ uint64_t Size, int TagType, void *TagBuf) {
+ struct DisassembleInfo *info = (struct DisassembleInfo *)DisInfo;
+ struct LLVMOpInfo1 *op_info = (struct LLVMOpInfo1 *)TagBuf;
+ unsigned int value = op_info->Value;
+
+ // Make sure all fields returned are zero if we don't set them.
+ memset((void *)op_info, '\0', sizeof(struct LLVMOpInfo1));
+ op_info->Value = value;
+
+ // If the TagType is not the value 1 which it code knows about or if no
+ // verbose symbolic information is wanted then just return 0, indicating no
+ // information is being returned.
+ if (TagType != 1 || info->verbose == false)
+ return 0;
+
+ unsigned int Arch = info->O->getArch();
+ if (Arch == Triple::x86) {
+ return 0;
+ } else if (Arch == Triple::x86_64) {
+ if (Size != 1 && Size != 2 && Size != 4 && Size != 0)
+ return 0;
+ // First search the section's relocation entries (if any) for an entry
+ // for this section offset.
+ uint64_t sect_addr = info->S.getAddress();
+ uint64_t sect_offset = (Pc + Offset) - sect_addr;
+ bool reloc_found = false;
+ DataRefImpl Rel;
+ MachO::any_relocation_info RE;
+ bool isExtern = false;
+ SymbolRef Symbol;
+ for (const RelocationRef &Reloc : info->S.relocations()) {
+ uint64_t RelocOffset;
+ Reloc.getOffset(RelocOffset);
+ if (RelocOffset == sect_offset) {
+ Rel = Reloc.getRawDataRefImpl();
+ RE = info->O->getRelocation(Rel);
+ // NOTE: Scattered relocations don't exist on x86_64.
+ isExtern = info->O->getPlainRelocationExternal(RE);
+ if (isExtern) {
+ symbol_iterator RelocSym = Reloc.getSymbol();
+ Symbol = *RelocSym;
+ }
+ reloc_found = true;
+ break;
+ }
+ }
+ if (reloc_found && isExtern) {
+ // The Value passed in will be adjusted by the Pc if the instruction
+ // adds the Pc. But for x86_64 external relocation entries the Value
+ // is the offset from the external symbol.
+ if (info->O->getAnyRelocationPCRel(RE))
+ op_info->Value -= Pc + Offset + Size;
+ StringRef SymName;
+ Symbol.getName(SymName);
+ const char *name = SymName.data();
+ unsigned Type = info->O->getAnyRelocationType(RE);
+ if (Type == MachO::X86_64_RELOC_SUBTRACTOR) {
+ DataRefImpl RelNext = Rel;
+ info->O->moveRelocationNext(RelNext);
+ MachO::any_relocation_info RENext = info->O->getRelocation(RelNext);
+ unsigned TypeNext = info->O->getAnyRelocationType(RENext);
+ bool isExternNext = info->O->getPlainRelocationExternal(RENext);
+ unsigned SymbolNum = info->O->getPlainRelocationSymbolNum(RENext);
+ if (TypeNext == MachO::X86_64_RELOC_UNSIGNED && isExternNext) {
+ op_info->SubtractSymbol.Present = 1;
+ op_info->SubtractSymbol.Name = name;
+ symbol_iterator RelocSymNext = info->O->getSymbolByIndex(SymbolNum);
+ Symbol = *RelocSymNext;
+ StringRef SymNameNext;
+ Symbol.getName(SymNameNext);
+ name = SymNameNext.data();
+ }
+ }
+ // TODO: add the VariantKinds to op_info->VariantKind for relocation types
+ // like: X86_64_RELOC_TLV, X86_64_RELOC_GOT_LOAD and X86_64_RELOC_GOT.
+ op_info->AddSymbol.Present = 1;
+ op_info->AddSymbol.Name = name;
+ return 1;
+ }
+ // TODO:
+ // Second search the external relocation entries of a fully linked image
+ // (if any) for an entry that matches this segment offset.
+ // uint64_t seg_offset = (Pc + Offset);
+ return 0;
+ } else if (Arch == Triple::arm) {
+ return 0;
+ } else if (Arch == Triple::aarch64) {
+ return 0;
+ } else {
+ return 0;
+ }
+}
+
+// GuessCstringPointer is passed the address of what might be a pointer to a
+// literal string in a cstring section. If that address is in a cstring section
+// it returns a pointer to that string. Else it returns nullptr.
+const char *GuessCstringPointer(uint64_t ReferenceValue,
+ struct DisassembleInfo *info) {
+ uint32_t LoadCommandCount = info->O->getHeader().ncmds;
+ MachOObjectFile::LoadCommandInfo Load = info->O->getFirstLoadCommandInfo();
+ for (unsigned I = 0;; ++I) {
+ if (Load.C.cmd == MachO::LC_SEGMENT_64) {
+ MachO::segment_command_64 Seg = info->O->getSegment64LoadCommand(Load);
+ for (unsigned J = 0; J < Seg.nsects; ++J) {
+ MachO::section_64 Sec = info->O->getSection64(Load, J);
+ uint32_t section_type = Sec.flags & MachO::SECTION_TYPE;
+ if (section_type == MachO::S_CSTRING_LITERALS &&
+ ReferenceValue >= Sec.addr &&
+ ReferenceValue < Sec.addr + Sec.size) {
+ uint64_t sect_offset = ReferenceValue - Sec.addr;
+ uint64_t object_offset = Sec.offset + sect_offset;
+ StringRef MachOContents = info->O->getData();
+ uint64_t object_size = MachOContents.size();
+ const char *object_addr = (const char *)MachOContents.data();
+ if (object_offset < object_size) {
+ const char *name = object_addr + object_offset;
+ return name;
+ } else {
+ return nullptr;
+ }
+ }
+ }
+ } else if (Load.C.cmd == MachO::LC_SEGMENT) {
+ MachO::segment_command Seg = info->O->getSegmentLoadCommand(Load);
+ for (unsigned J = 0; J < Seg.nsects; ++J) {
+ MachO::section Sec = info->O->getSection(Load, J);
+ uint32_t section_type = Sec.flags & MachO::SECTION_TYPE;
+ if (section_type == MachO::S_CSTRING_LITERALS &&
+ ReferenceValue >= Sec.addr &&
+ ReferenceValue < Sec.addr + Sec.size) {
+ uint64_t sect_offset = ReferenceValue - Sec.addr;
+ uint64_t object_offset = Sec.offset + sect_offset;
+ StringRef MachOContents = info->O->getData();
+ uint64_t object_size = MachOContents.size();
+ const char *object_addr = (const char *)MachOContents.data();
+ if (object_offset < object_size) {
+ const char *name = object_addr + object_offset;
+ return name;
+ } else {
+ return nullptr;
+ }
+ }
+ }
+ }
+ if (I == LoadCommandCount - 1)
+ break;
+ else
+ Load = info->O->getNextLoadCommandInfo(Load);
+ }
+ return nullptr;
+}
+
+// GuessIndirectSymbol returns the name of the indirect symbol for the
+// ReferenceValue passed in or nullptr. This is used when ReferenceValue maybe
+// an address of a symbol stub or a lazy or non-lazy pointer to associate the
+// symbol name being referenced by the stub or pointer.
+static const char *GuessIndirectSymbol(uint64_t ReferenceValue,
+ struct DisassembleInfo *info) {
+ uint32_t LoadCommandCount = info->O->getHeader().ncmds;
+ MachOObjectFile::LoadCommandInfo Load = info->O->getFirstLoadCommandInfo();
+ MachO::dysymtab_command Dysymtab = info->O->getDysymtabLoadCommand();
+ MachO::symtab_command Symtab = info->O->getSymtabLoadCommand();
+ for (unsigned I = 0;; ++I) {
+ if (Load.C.cmd == MachO::LC_SEGMENT_64) {
+ MachO::segment_command_64 Seg = info->O->getSegment64LoadCommand(Load);
+ for (unsigned J = 0; J < Seg.nsects; ++J) {
+ MachO::section_64 Sec = info->O->getSection64(Load, J);
+ uint32_t section_type = Sec.flags & MachO::SECTION_TYPE;
+ if ((section_type == MachO::S_NON_LAZY_SYMBOL_POINTERS ||
+ section_type == MachO::S_LAZY_SYMBOL_POINTERS ||
+ section_type == MachO::S_LAZY_DYLIB_SYMBOL_POINTERS ||
+ section_type == MachO::S_THREAD_LOCAL_VARIABLE_POINTERS ||
+ section_type == MachO::S_SYMBOL_STUBS) &&
+ ReferenceValue >= Sec.addr &&
+ ReferenceValue < Sec.addr + Sec.size) {
+ uint32_t stride;
+ if (section_type == MachO::S_SYMBOL_STUBS)
+ stride = Sec.reserved2;
+ else
+ stride = 8;
+ if (stride == 0)
+ return nullptr;
+ uint32_t index = Sec.reserved1 + (ReferenceValue - Sec.addr) / stride;
+ if (index < Dysymtab.nindirectsyms) {
+ uint32_t indirect_symbol =
+ info->O->getIndirectSymbolTableEntry(Dysymtab, index);
+ if (indirect_symbol < Symtab.nsyms) {
+ symbol_iterator Sym = info->O->getSymbolByIndex(indirect_symbol);
+ SymbolRef Symbol = *Sym;
+ StringRef SymName;
+ Symbol.getName(SymName);
+ const char *name = SymName.data();
+ return name;
+ }
+ }
+ }
+ }
+ } else if (Load.C.cmd == MachO::LC_SEGMENT) {
+ MachO::segment_command Seg = info->O->getSegmentLoadCommand(Load);
+ for (unsigned J = 0; J < Seg.nsects; ++J) {
+ MachO::section Sec = info->O->getSection(Load, J);
+ uint32_t section_type = Sec.flags & MachO::SECTION_TYPE;
+ if ((section_type == MachO::S_NON_LAZY_SYMBOL_POINTERS ||
+ section_type == MachO::S_LAZY_SYMBOL_POINTERS ||
+ section_type == MachO::S_LAZY_DYLIB_SYMBOL_POINTERS ||
+ section_type == MachO::S_THREAD_LOCAL_VARIABLE_POINTERS ||
+ section_type == MachO::S_SYMBOL_STUBS) &&
+ ReferenceValue >= Sec.addr &&
+ ReferenceValue < Sec.addr + Sec.size) {
+ uint32_t stride;
+ if (section_type == MachO::S_SYMBOL_STUBS)
+ stride = Sec.reserved2;
+ else
+ stride = 4;
+ if (stride == 0)
+ return nullptr;
+ uint32_t index = Sec.reserved1 + (ReferenceValue - Sec.addr) / stride;
+ if (index < Dysymtab.nindirectsyms) {
+ uint32_t indirect_symbol =
+ info->O->getIndirectSymbolTableEntry(Dysymtab, index);
+ if (indirect_symbol < Symtab.nsyms) {
+ symbol_iterator Sym = info->O->getSymbolByIndex(indirect_symbol);
+ SymbolRef Symbol = *Sym;
+ StringRef SymName;
+ Symbol.getName(SymName);
+ const char *name = SymName.data();
+ return name;
+ }
+ }
+ }
+ }
+ }
+ if (I == LoadCommandCount - 1)
+ break;
+ else
+ Load = info->O->getNextLoadCommandInfo(Load);
+ }
+ return nullptr;
+}
+
+// method_reference() is called passing it the ReferenceName that might be
+// a reference it to an Objective-C method call. If so then it allocates and
+// assembles a method call string with the values last seen and saved in
+// the DisassembleInfo's class_name and selector_name fields. This is saved
+// into the method field of the info and any previous string is free'ed.
+// Then the class_name field in the info is set to nullptr. The method call
+// string is set into ReferenceName and ReferenceType is set to
+// LLVMDisassembler_ReferenceType_Out_Objc_Message. If this not a method call
+// then both ReferenceType and ReferenceName are left unchanged.
+static void method_reference(struct DisassembleInfo *info,
+ uint64_t *ReferenceType,
+ const char **ReferenceName) {
+ if (*ReferenceName != nullptr) {
+ if (strcmp(*ReferenceName, "_objc_msgSend") == 0) {
+ if (info->selector_name != NULL) {
+ if (info->method != nullptr)
+ free(info->method);
+ if (info->class_name != nullptr) {
+ info->method = (char *)malloc(5 + strlen(info->class_name) +
+ strlen(info->selector_name));
+ if (info->method != nullptr) {
+ strcpy(info->method, "+[");
+ strcat(info->method, info->class_name);
+ strcat(info->method, " ");
+ strcat(info->method, info->selector_name);
+ strcat(info->method, "]");
+ *ReferenceName = info->method;
+ *ReferenceType = LLVMDisassembler_ReferenceType_Out_Objc_Message;
+ }
+ } else {
+ info->method = (char *)malloc(9 + strlen(info->selector_name));
+ if (info->method != nullptr) {
+ strcpy(info->method, "-[%rdi ");
+ strcat(info->method, info->selector_name);
+ strcat(info->method, "]");
+ *ReferenceName = info->method;
+ *ReferenceType = LLVMDisassembler_ReferenceType_Out_Objc_Message;
+ }
+ }
+ info->class_name = nullptr;
+ }
+ } else if (strcmp(*ReferenceName, "_objc_msgSendSuper2") == 0) {
+ if (info->selector_name != NULL) {
+ if (info->method != nullptr)
+ free(info->method);
+ info->method = (char *)malloc(17 + strlen(info->selector_name));
+ if (info->method != nullptr) {
+ strcpy(info->method, "-[[%rdi super] ");
+ strcat(info->method, info->selector_name);
+ strcat(info->method, "]");
+ *ReferenceName = info->method;
+ *ReferenceType = LLVMDisassembler_ReferenceType_Out_Objc_Message;
+ }
+ info->class_name = nullptr;
+ }
+ }
+ }
+}
+
+// GuessPointerPointer() is passed the address of what might be a pointer to
+// a reference to an Objective-C class, selector, message ref or cfstring.
+// If so the value of the pointer is returned and one of the booleans are set
+// to true. If not zero is returned and all the booleans are set to false.
+static uint64_t GuessPointerPointer(uint64_t ReferenceValue,
+ struct DisassembleInfo *info,
+ bool &classref, bool &selref, bool &msgref,
+ bool &cfstring) {
+ classref = false;
+ selref = false;
+ msgref = false;
+ cfstring = false;
+ uint32_t LoadCommandCount = info->O->getHeader().ncmds;
+ MachOObjectFile::LoadCommandInfo Load = info->O->getFirstLoadCommandInfo();
+ for (unsigned I = 0;; ++I) {
+ if (Load.C.cmd == MachO::LC_SEGMENT_64) {
+ MachO::segment_command_64 Seg = info->O->getSegment64LoadCommand(Load);
+ for (unsigned J = 0; J < Seg.nsects; ++J) {
+ MachO::section_64 Sec = info->O->getSection64(Load, J);
+ if ((strncmp(Sec.sectname, "__objc_selrefs", 16) == 0 ||
+ strncmp(Sec.sectname, "__objc_classrefs", 16) == 0 ||
+ strncmp(Sec.sectname, "__objc_superrefs", 16) == 0 ||
+ strncmp(Sec.sectname, "__objc_msgrefs", 16) == 0 ||
+ strncmp(Sec.sectname, "__cfstring", 16) == 0) &&
+ ReferenceValue >= Sec.addr &&
+ ReferenceValue < Sec.addr + Sec.size) {
+ uint64_t sect_offset = ReferenceValue - Sec.addr;
+ uint64_t object_offset = Sec.offset + sect_offset;
+ StringRef MachOContents = info->O->getData();
+ uint64_t object_size = MachOContents.size();
+ const char *object_addr = (const char *)MachOContents.data();
+ if (object_offset < object_size) {
+ uint64_t pointer_value;
+ memcpy(&pointer_value, object_addr + object_offset,
+ sizeof(uint64_t));
+ if (info->O->isLittleEndian() != sys::IsLittleEndianHost)
+ sys::swapByteOrder(pointer_value);
+ if (strncmp(Sec.sectname, "__objc_selrefs", 16) == 0)
+ selref = true;
+ else if (strncmp(Sec.sectname, "__objc_classrefs", 16) == 0 ||
+ strncmp(Sec.sectname, "__objc_superrefs", 16) == 0)
+ classref = true;
+ else if (strncmp(Sec.sectname, "__objc_msgrefs", 16) == 0 &&
+ ReferenceValue + 8 < Sec.addr + Sec.size) {
+ msgref = true;
+ memcpy(&pointer_value, object_addr + object_offset + 8,
+ sizeof(uint64_t));
+ if (info->O->isLittleEndian() != sys::IsLittleEndianHost)
+ sys::swapByteOrder(pointer_value);
+ } else if (strncmp(Sec.sectname, "__cfstring", 16) == 0)
+ cfstring = true;
+ return pointer_value;
+ } else {
+ return 0;
+ }
+ }
+ }
+ }
+ // TODO: Look for LC_SEGMENT for 32-bit Mach-O files.
+ if (I == LoadCommandCount - 1)
+ break;
+ else
+ Load = info->O->getNextLoadCommandInfo(Load);
+ }
+ return 0;
+}
+
+// get_pointer_64 returns a pointer to the bytes in the object file at the
+// Address from a section in the Mach-O file. And indirectly returns the
+// offset into the section, number of bytes left in the section past the offset
+// and which section is was being referenced. If the Address is not in a
+// section nullptr is returned.
+const char *get_pointer_64(uint64_t Address, uint32_t &offset, uint32_t &left,
+ SectionRef &S, DisassembleInfo *info) {
+ offset = 0;
+ left = 0;
+ S = SectionRef();
+ for (unsigned SectIdx = 0; SectIdx != info->Sections->size(); SectIdx++) {
+ uint64_t SectAddress = ((*(info->Sections))[SectIdx]).getAddress();
+ uint64_t SectSize = ((*(info->Sections))[SectIdx]).getSize();
+ if (Address >= SectAddress && Address < SectAddress + SectSize) {
+ S = (*(info->Sections))[SectIdx];
+ offset = Address - SectAddress;
+ left = SectSize - offset;
+ StringRef SectContents;
+ ((*(info->Sections))[SectIdx]).getContents(SectContents);
+ return SectContents.data() + offset;
+ }
+ }
+ return nullptr;
+}
+
+// get_symbol_64() returns the name of a symbol (or nullptr) and the address of
+// the symbol indirectly through n_value. Based on the relocation information
+// for the specified section offset in the specified section reference.
+const char *get_symbol_64(uint32_t sect_offset, SectionRef S,
+ DisassembleInfo *info, uint64_t &n_value) {
+ n_value = 0;
+ if (info->verbose == false)
+ return nullptr;
+
+ // See if there is an external relocation entry at the sect_offset.
+ bool reloc_found = false;
+ DataRefImpl Rel;
+ MachO::any_relocation_info RE;
+ bool isExtern = false;
+ SymbolRef Symbol;
+ for (const RelocationRef &Reloc : S.relocations()) {
+ uint64_t RelocOffset;
+ Reloc.getOffset(RelocOffset);
+ if (RelocOffset == sect_offset) {
+ Rel = Reloc.getRawDataRefImpl();
+ RE = info->O->getRelocation(Rel);
+ if (info->O->isRelocationScattered(RE))
+ continue;
+ isExtern = info->O->getPlainRelocationExternal(RE);
+ if (isExtern) {
+ symbol_iterator RelocSym = Reloc.getSymbol();
+ Symbol = *RelocSym;
+ }
+ reloc_found = true;
+ break;
+ }
+ }
+ // If there is an external relocation entry for a symbol in this section
+ // at this section_offset then use that symbol's value for the n_value
+ // and return its name.
+ const char *SymbolName = nullptr;
+ if (reloc_found && isExtern) {
+ Symbol.getAddress(n_value);
+ StringRef name;
+ Symbol.getName(name);
+ if (!name.empty()) {
+ SymbolName = name.data();
+ return SymbolName;
+ }
+ }
+
+ // TODO: For fully linked images, look through the external relocation
+ // entries off the dynamic symtab command. For these the r_offset is from the
+ // start of the first writeable segment in the Mach-O file. So the offset
+ // to this section from that segment is passed to this routine by the caller,
+ // as the database_offset. Which is the difference of the section's starting
+ // address and the first writable segment.
+ //
+ // NOTE: need add passing the database_offset to this routine.
+
+ // TODO: We did not find an external relocation entry so look up the
+ // ReferenceValue as an address of a symbol and if found return that symbol's
+ // name.
+ //
+ // NOTE: need add passing the ReferenceValue to this routine. Then that code
+ // would simply be this:
+ //
+ // if (ReferenceValue != 0xffffffffffffffffLLU &&
+ // ReferenceValue != 0xfffffffffffffffeLLU) {
+ // StringRef name = info->AddrMap->lookup(ReferenceValue);
+ // if (!name.empty())
+ // SymbolName = name.data();
+ // }
+
+ return SymbolName;
+}
+
+// These are structs in the Objective-C meta data and read to produce the
+// comments for disassembly. While these are part of the ABI they are no
+// public defintions. So the are here not in include/llvm/Support/MachO.h .
+
+// The cfstring object in a 64-bit Mach-O file.
+struct cfstring64_t {
+ uint64_t isa; // class64_t * (64-bit pointer)
+ uint64_t flags; // flag bits
+ uint64_t characters; // char * (64-bit pointer)
+ uint64_t length; // number of non-NULL characters in above
+};
+
+// The class object in a 64-bit Mach-O file.
+struct class64_t {
+ uint64_t isa; // class64_t * (64-bit pointer)
+ uint64_t superclass; // class64_t * (64-bit pointer)
+ uint64_t cache; // Cache (64-bit pointer)
+ uint64_t vtable; // IMP * (64-bit pointer)
+ uint64_t data; // class_ro64_t * (64-bit pointer)
+};
+
+struct class_ro64_t {
+ uint32_t flags;
+ uint32_t instanceStart;
+ uint32_t instanceSize;
+ uint32_t reserved;
+ uint64_t ivarLayout; // const uint8_t * (64-bit pointer)
+ uint64_t name; // const char * (64-bit pointer)
+ uint64_t baseMethods; // const method_list_t * (64-bit pointer)
+ uint64_t baseProtocols; // const protocol_list_t * (64-bit pointer)
+ uint64_t ivars; // const ivar_list_t * (64-bit pointer)
+ uint64_t weakIvarLayout; // const uint8_t * (64-bit pointer)
+ uint64_t baseProperties; // const struct objc_property_list (64-bit pointer)
+};
+
+inline void swapStruct(struct cfstring64_t &cfs) {
+ sys::swapByteOrder(cfs.isa);
+ sys::swapByteOrder(cfs.flags);
+ sys::swapByteOrder(cfs.characters);
+ sys::swapByteOrder(cfs.length);
+}
+
+inline void swapStruct(struct class64_t &c) {
+ sys::swapByteOrder(c.isa);
+ sys::swapByteOrder(c.superclass);
+ sys::swapByteOrder(c.cache);
+ sys::swapByteOrder(c.vtable);
+ sys::swapByteOrder(c.data);
+}
+
+inline void swapStruct(struct class_ro64_t &cro) {
+ sys::swapByteOrder(cro.flags);
+ sys::swapByteOrder(cro.instanceStart);
+ sys::swapByteOrder(cro.instanceSize);
+ sys::swapByteOrder(cro.reserved);
+ sys::swapByteOrder(cro.ivarLayout);
+ sys::swapByteOrder(cro.name);
+ sys::swapByteOrder(cro.baseMethods);
+ sys::swapByteOrder(cro.baseProtocols);
+ sys::swapByteOrder(cro.ivars);
+ sys::swapByteOrder(cro.weakIvarLayout);
+ sys::swapByteOrder(cro.baseProperties);
+}
+
+static const char *get_dyld_bind_info_symbolname(uint64_t ReferenceValue,
+ struct DisassembleInfo *info);
+
+// get_objc2_64bit_class_name() is used for disassembly and is passed a pointer
+// to an Objective-C class and returns the class name. It is also passed the
+// address of the pointer, so when the pointer is zero as it can be in an .o
+// file, that is used to look for an external relocation entry with a symbol
+// name.
+const char *get_objc2_64bit_class_name(uint64_t pointer_value,
+ uint64_t ReferenceValue,
+ struct DisassembleInfo *info) {
+ const char *r;
+ uint32_t offset, left;
+ SectionRef S;
+
+ // The pointer_value can be 0 in an object file and have a relocation
+ // entry for the class symbol at the ReferenceValue (the address of the
+ // pointer).
+ if (pointer_value == 0) {
+ r = get_pointer_64(ReferenceValue, offset, left, S, info);
+ if (r == nullptr || left < sizeof(uint64_t))
+ return nullptr;
+ uint64_t n_value;
+ const char *symbol_name = get_symbol_64(offset, S, info, n_value);
+ if (symbol_name == nullptr)
+ return nullptr;
+ const char *class_name = strrchr(symbol_name, '$');
+ if (class_name != nullptr && class_name[1] == '_' && class_name[2] != '\0')
+ return class_name + 2;
+ else
+ return nullptr;
+ }
+
+ // The case were the pointer_value is non-zero and points to a class defined
+ // in this Mach-O file.
+ r = get_pointer_64(pointer_value, offset, left, S, info);
+ if (r == nullptr || left < sizeof(struct class64_t))
+ return nullptr;
+ struct class64_t c;
+ memcpy(&c, r, sizeof(struct class64_t));
+ if (info->O->isLittleEndian() != sys::IsLittleEndianHost)
+ swapStruct(c);
+ if (c.data == 0)
+ return nullptr;
+ r = get_pointer_64(c.data, offset, left, S, info);
+ if (r == nullptr || left < sizeof(struct class_ro64_t))
+ return nullptr;
+ struct class_ro64_t cro;
+ memcpy(&cro, r, sizeof(struct class_ro64_t));
+ if (info->O->isLittleEndian() != sys::IsLittleEndianHost)
+ swapStruct(cro);
+ if (cro.name == 0)
+ return nullptr;
+ const char *name = get_pointer_64(cro.name, offset, left, S, info);
+ return name;
+}
+
+// get_objc2_64bit_cfstring_name is used for disassembly and is passed a
+// pointer to a cfstring and returns its name or nullptr.
+const char *get_objc2_64bit_cfstring_name(uint64_t ReferenceValue,
+ struct DisassembleInfo *info) {
+ const char *r, *name;
+ uint32_t offset, left;
+ SectionRef S;
+ struct cfstring64_t cfs;
+ uint64_t cfs_characters;
+
+ r = get_pointer_64(ReferenceValue, offset, left, S, info);
+ if (r == nullptr || left < sizeof(struct cfstring64_t))
+ return nullptr;
+ memcpy(&cfs, r, sizeof(struct cfstring64_t));
+ if (info->O->isLittleEndian() != sys::IsLittleEndianHost)
+ swapStruct(cfs);
+ if (cfs.characters == 0) {
+ uint64_t n_value;
+ const char *symbol_name = get_symbol_64(
+ offset + offsetof(struct cfstring64_t, characters), S, info, n_value);
+ if (symbol_name == nullptr)
+ return nullptr;
+ cfs_characters = n_value;
+ } else
+ cfs_characters = cfs.characters;
+ name = get_pointer_64(cfs_characters, offset, left, S, info);
+
+ return name;
+}
+
+// get_objc2_64bit_selref() is used for disassembly and is passed a the address
+// of a pointer to an Objective-C selector reference when the pointer value is
+// zero as in a .o file and is likely to have a external relocation entry with
+// who's symbol's n_value is the real pointer to the selector name. If that is
+// the case the real pointer to the selector name is returned else 0 is
+// returned
+uint64_t get_objc2_64bit_selref(uint64_t ReferenceValue,
+ struct DisassembleInfo *info) {
+ uint32_t offset, left;
+ SectionRef S;
+
+ const char *r = get_pointer_64(ReferenceValue, offset, left, S, info);
+ if (r == nullptr || left < sizeof(uint64_t))
+ return 0;
+ uint64_t n_value;
+ const char *symbol_name = get_symbol_64(offset, S, info, n_value);
+ if (symbol_name == nullptr)
+ return 0;
+ return n_value;
+}
+
+// GuessLiteralPointer returns a string which for the item in the Mach-O file
+// for the address passed in as ReferenceValue for printing as a comment with
+// the instruction and also returns the corresponding type of that item
+// indirectly through ReferenceType.
+//
+// If ReferenceValue is an address of literal cstring then a pointer to the
+// cstring is returned and ReferenceType is set to
+// LLVMDisassembler_ReferenceType_Out_LitPool_CstrAddr .
+//
+// If ReferenceValue is an address of an Objective-C CFString, Selector ref or
+// Class ref that name is returned and the ReferenceType is set accordingly.
+//
+// Lastly, literals which are Symbol address in a literal pool are looked for
+// and if found the symbol name is returned and ReferenceType is set to
+// LLVMDisassembler_ReferenceType_Out_LitPool_SymAddr .
+//
+// If there is no item in the Mach-O file for the address passed in as
+// ReferenceValue nullptr is returned and ReferenceType is unchanged.
+const char *GuessLiteralPointer(uint64_t ReferenceValue, uint64_t ReferencePC,
+ uint64_t *ReferenceType,
+ struct DisassembleInfo *info) {
+ // TODO: This rouine's code and the routines it calls are only work with
+ // x86_64 Mach-O files for now.
+ unsigned int Arch = info->O->getArch();
+ if (Arch != Triple::x86_64)
+ return nullptr;
+
+ // First see if there is an external relocation entry at the ReferencePC.
+ uint64_t sect_addr = info->S.getAddress();
+ uint64_t sect_offset = ReferencePC - sect_addr;
+ bool reloc_found = false;
+ DataRefImpl Rel;
+ MachO::any_relocation_info RE;
+ bool isExtern = false;
+ SymbolRef Symbol;
+ for (const RelocationRef &Reloc : info->S.relocations()) {
+ uint64_t RelocOffset;
+ Reloc.getOffset(RelocOffset);
+ if (RelocOffset == sect_offset) {
+ Rel = Reloc.getRawDataRefImpl();
+ RE = info->O->getRelocation(Rel);
+ if (info->O->isRelocationScattered(RE))
+ continue;
+ isExtern = info->O->getPlainRelocationExternal(RE);
+ if (isExtern) {
+ symbol_iterator RelocSym = Reloc.getSymbol();
+ Symbol = *RelocSym;
+ }
+ reloc_found = true;
+ break;
+ }
+ }
+ // 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);
+ }
+ }
+ }
+
+ // Look for literals such as Objective-C CFStrings refs, Selector refs,
+ // Message refs and Class refs.
+ bool classref, selref, msgref, cfstring;
+ uint64_t pointer_value = GuessPointerPointer(ReferenceValue, info, classref,
+ selref, msgref, cfstring);
+ if (classref == true && pointer_value == 0) {
+ // Note the ReferenceValue is a pointer into the __objc_classrefs section.
+ // And the pointer_value in that section is typically zero as it will be
+ // set by dyld as part of the "bind information".
+ const char *name = get_dyld_bind_info_symbolname(ReferenceValue, info);
+ if (name != nullptr) {
+ *ReferenceType = LLVMDisassembler_ReferenceType_Out_Objc_Class_Ref;
+ const char *class_name = strrchr(name, '$');
+ if (class_name != nullptr && class_name[1] == '_' &&
+ class_name[2] != '\0') {
+ info->class_name = class_name + 2;
+ return name;
+ }
+ }
+ }
+
+ if (classref == true) {
+ *ReferenceType = LLVMDisassembler_ReferenceType_Out_Objc_Class_Ref;
+ const char *name =
+ get_objc2_64bit_class_name(pointer_value, ReferenceValue, info);
+ if (name != nullptr)
+ info->class_name = name;
+ else
+ name = "bad class ref";
+ return name;
+ }
+
+ if (cfstring == true) {
+ *ReferenceType = LLVMDisassembler_ReferenceType_Out_Objc_CFString_Ref;
+ const char *name = get_objc2_64bit_cfstring_name(ReferenceValue, info);
+ return name;
+ }
+
+ if (selref == true && pointer_value == 0)
+ pointer_value = get_objc2_64bit_selref(ReferenceValue, info);
+
+ if (pointer_value != 0)
+ ReferenceValue = pointer_value;
+
+ const char *name = GuessCstringPointer(ReferenceValue, info);
+ if (name) {
+ if (pointer_value != 0 && selref == true) {
+ *ReferenceType = LLVMDisassembler_ReferenceType_Out_Objc_Selector_Ref;
+ info->selector_name = name;
+ } else if (pointer_value != 0 && msgref == true) {
+ info->class_name = nullptr;
+ *ReferenceType = LLVMDisassembler_ReferenceType_Out_Objc_Message_Ref;
+ info->selector_name = name;
+ } else
+ *ReferenceType = LLVMDisassembler_ReferenceType_Out_LitPool_CstrAddr;
+ return name;
+ }
+
+ // Lastly look for an indirect symbol with this ReferenceValue which is in
+ // a literal pool. If found return that symbol name.
+ name = GuessIndirectSymbol(ReferenceValue, info);
+ if (name) {
+ *ReferenceType = LLVMDisassembler_ReferenceType_Out_LitPool_SymAddr;
+ return name;
+ }
+
+ 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 HAVE_CXXABI_H
+// 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 .
+#endif
+//
+// 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 setting the 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;
+ if (ReferenceValue != 0xffffffffffffffffULL &&
+ ReferenceValue != 0xfffffffffffffffeULL) {
+ StringRef name = info->AddrMap->lookup(ReferenceValue);
+ if (!name.empty())
+ SymbolName = name.data();
+ }
+
+ if (*ReferenceType == LLVMDisassembler_ReferenceType_In_Branch) {
+ *ReferenceName = GuessIndirectSymbol(ReferenceValue, info);
+ if (*ReferenceName != nullptr) {
+ method_reference(info, ReferenceType, ReferenceName);
+ if (*ReferenceType != LLVMDisassembler_ReferenceType_Out_Objc_Message)
+ *ReferenceType = LLVMDisassembler_ReferenceType_Out_SymbolStub;
+ } else
+#if HAVE_CXXABI_H
+ if (SymbolName != nullptr && strncmp(SymbolName, "__Z", 3) == 0) {
+ if (info->demangled_name != nullptr)
+ free(info->demangled_name);
+ int status;
+ info->demangled_name = abi::__cxa_demangle(SymbolName + 1, nullptr,
+ nullptr, &status);
+ if (info->demangled_name != nullptr) {
+ *ReferenceName = info->demangled_name;
+ *ReferenceType = LLVMDisassembler_ReferenceType_DeMangled_Name;
+ } else
+ *ReferenceType = LLVMDisassembler_ReferenceType_InOut_None;
+ } else
+#endif
+ *ReferenceType = LLVMDisassembler_ReferenceType_InOut_None;
+ } else if (*ReferenceType == LLVMDisassembler_ReferenceType_In_PCrel_Load) {
+ *ReferenceName =
+ GuessLiteralPointer(ReferenceValue, ReferencePC, ReferenceType, info);
+ if (*ReferenceName)
+ method_reference(info, ReferenceType, ReferenceName);
+ else
+ *ReferenceType = LLVMDisassembler_ReferenceType_InOut_None;
+ }
+#if HAVE_CXXABI_H
+ else if (SymbolName != nullptr && strncmp(SymbolName, "__Z", 3) == 0) {
+ if (info->demangled_name != nullptr)
+ free(info->demangled_name);
+ int status;
+ info->demangled_name = abi::__cxa_demangle(SymbolName + 1, nullptr, nullptr,
+ &status);
+ if (info->demangled_name != nullptr) {
+ *ReferenceName = info->demangled_name;
+ *ReferenceType = LLVMDisassembler_ReferenceType_DeMangled_Name;
+ }
+ }
+#endif
+ 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 Target *TheTarget = GetTarget(MachOOF);
+ const char *McpuDefault = nullptr;
+ const Target *ThumbTarget = nullptr;
+ const Target *TheTarget = GetTarget(MachOOF, &McpuDefault, &ThumbTarget);
if (!TheTarget) {
// GetTarget prints out stuff.
return;
}
- OwningPtr<const MCInstrInfo> InstrInfo(TheTarget->createMCInstrInfo());
- OwningPtr<MCInstrAnalysis>
- InstrAnalysis(TheTarget->createMCInstrAnalysis(InstrInfo.get()));
+ 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.
- OwningPtr<const MCRegisterInfo> MRI(TheTarget->createMCRegInfo(TripleName));
- OwningPtr<const MCAsmInfo> AsmInfo(
+ std::unique_ptr<const MCRegisterInfo> MRI(
+ TheTarget->createMCRegInfo(TripleName));
+ std::unique_ptr<const MCAsmInfo> AsmInfo(
TheTarget->createMCAsmInfo(*MRI, TripleName));
- OwningPtr<const MCSubtargetInfo>
- STI(TheTarget->createMCSubtargetInfo(TripleName, "", ""));
- OwningPtr<const MCDisassembler> DisAsm(TheTarget->createMCDisassembler(*STI));
+ 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();
- OwningPtr<MCInstPrinter>
- IP(TheTarget->createMCInstPrinter(AsmPrinterVariant, *AsmInfo, *InstrInfo,
- *MRI, *STI));
+ 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 "
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::Header Header = MachOOF->getHeader();
+ MachO::mach_header Header = MachOOF->getHeader();
- // FIXME: FoundFns isn't used anymore. Using symbols/LC_FUNCTION_STARTS to
- // determine function locations will eventually go in MCObjectDisassembler.
// FIXME: Using the -cfg command line option, this code used to be able to
// annotate relocations with the referenced symbol's name, and if this was
// inside a __[cf]string section, the data it points to. This is now replaced
getSectionsAndSymbols(Header, MachOOF, Sections, Symbols, FoundFns,
BaseSegmentAddress);
- // Make a copy of the unsorted symbol list. FIXME: duplication
- std::vector<SymbolRef> UnsortedSymbols(Symbols);
// 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::HFT_Object)
- Sections[0].getAddress(BaseAddress);
+ if (Header.filetype == MachO::MH_OBJECT)
+ BaseAddress = Sections[0].getAddress();
else
BaseAddress = BaseSegmentAddress;
DiceTable Dices;
- error_code ec;
for (dice_iterator DI = MachOOF->begin_dices(), DE = MachOOF->end_dices();
- DI != DE; DI.increment(ec)){
+ DI != DE; ++DI) {
uint32_t Offset;
DI->getOffset(Offset);
Dices.push_back(std::make_pair(BaseAddress + Offset, *DI));
raw_ostream &DebugOut = nulls();
#endif
- OwningPtr<DIContext> diContext;
+ 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()) {
- OwningPtr<MemoryBuffer> Buf;
- if (error_code ec = MemoryBuffer::getFileOrSTDIN(DSYMFile, Buf)) {
- errs() << "llvm-objdump: " << Filename << ": " << ec.message() << '\n';
+ 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(Buf.take());
+ DbgObj =
+ ObjectFile::createMachOObjectFile(BufOrErr.get()->getMemBufferRef())
+ .get()
+ .release();
}
// Setup the DIContext
- diContext.reset(DIContext::getDWARFContext(DbgObj));
+ diContext.reset(DIContext::getDWARFContext(*DbgObj));
}
for (unsigned SectIdx = 0; SectIdx != Sections.size(); SectIdx++) {
- bool SectIsText = false;
- Sections[SectIdx].isText(SectIsText);
+ bool SectIsText = Sections[SectIdx].isText();
if (SectIsText == false)
continue;
StringRef Bytes;
Sections[SectIdx].getContents(Bytes);
- StringRefMemoryObject memoryObject(Bytes);
+ uint64_t SectAddress = Sections[SectIdx].getAddress();
+ DisasmMemoryObject MemoryObject((const uint8_t *)Bytes.data(), Bytes.size(),
+ SectAddress);
bool symbolTableWorked = false;
// Parse relocations.
- std::vector<std::pair<uint64_t, SymbolRef> > Relocs;
- error_code ec;
- for (relocation_iterator RI = Sections[SectIdx].begin_relocations(),
- RE = Sections[SectIdx].end_relocations(); RI != RE; RI.increment(ec)) {
- uint64_t RelocOffset, SectionAddress;
- RI->getOffset(RelocOffset);
- Sections[SectIdx].getAddress(SectionAddress);
+ std::vector<std::pair<uint64_t, SymbolRef>> Relocs;
+ for (const RelocationRef &Reloc : Sections[SectIdx].relocations()) {
+ uint64_t RelocOffset;
+ Reloc.getOffset(RelocOffset);
+ uint64_t SectionAddress = Sections[SectIdx].getAddress();
RelocOffset -= SectionAddress;
- symbol_iterator RelocSym = RI->getSymbol();
+ 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;
+ SymbolizerInfo.Sections = &Sections;
+ SymbolizerInfo.class_name = nullptr;
+ SymbolizerInfo.selector_name = nullptr;
+ SymbolizerInfo.method = nullptr;
+ SymbolizerInfo.demangled_name = nullptr;
+ SymbolizerInfo.bindtable = nullptr;
+
// Disassemble symbol by symbol.
for (unsigned SymIdx = 0; SymIdx != Symbols.size(); SymIdx++) {
StringRef SymName;
continue;
// Make sure the symbol is defined in this section.
- bool containsSym = false;
- Sections[SectIdx].containsSymbol(Symbols[SymIdx], containsSym);
+ bool containsSym = Sections[SectIdx].containsSymbol(Symbols[SymIdx]);
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);
+ uint64_t SectionAddress = Sections[SectIdx].getAddress();
Symbols[SymIdx].getAddress(Start);
Start -= SectionAddress;
SymbolRef::Type NextSymType;
Symbols[NextSymIdx].getType(NextSymType);
if (NextSymType == SymbolRef::ST_Function) {
- Sections[SectIdx].containsSymbol(Symbols[NextSymIdx],
- containsNextSym);
+ containsNextSym =
+ Sections[SectIdx].containsSymbol(Symbols[NextSymIdx]);
Symbols[NextSymIdx].getAddress(NextSym);
NextSym -= SectionAddress;
break;
++NextSymIdx;
}
- uint64_t SectSize;
- Sections[SectIdx].getSize(SectSize);
+ uint64_t SectSize = Sections[SectIdx].getSize();
uint64_t End = containsNextSym ? NextSym : SectSize;
uint64_t Size;
symbolTableWorked = true;
+ DisasmMemoryObject SectionMemoryObject((const uint8_t *)Bytes.data() +
+ Start,
+ End - Start, SectAddress + Start);
+
+ 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 SectAddress = 0;
- Sections[SectIdx].getAddress(SectAddress);
- outs() << format("%8" PRIx64 ":\t", SectAddress + Index);
+ 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(SectAddress + Index, DiceRef()));
+ Dice.push_back(std::make_pair(PC, DiceRef()));
dice_table_iterator DTI = std::search(Dices.begin(), Dices.end(),
Dice.begin(), Dice.end(),
compareDiceTableEntries);
continue;
}
- if (DisAsm->getInstruction(Inst, Size, memoryObject, Index,
- DebugOut, nulls())) {
- DumpBytes(StringRef(Bytes.data() + Index, Size));
- IP->printInst(&Inst, outs(), "");
+ SmallVector<char, 64> AnnotationsBytes;
+ raw_svector_ostream Annotations(AnnotationsBytes);
+
+ bool gotInst;
+ if (isThumb)
+ gotInst = ThumbDisAsm->getInstruction(Inst, Size, SectionMemoryObject,
+ PC, DebugOut, Annotations);
+ else
+ gotInst = DisAsm->getInstruction(Inst, Size, SectionMemoryObject, 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(SectAddress + Index);
+ diContext->getLineInfoForAddress(PC);
// Print valid line info if it changed.
- if (dli != lastLine && dli.getLine() != 0)
- outs() << "\t## " << dli.getFileName() << ':'
- << dli.getLine() << ':' << dli.getColumn();
+ 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
+ unsigned int Arch = MachOOF->getArch();
+ if (Arch == Triple::x86_64 || Arch == Triple::x86){
+ outs() << format("\t.byte 0x%02x #bad opcode\n",
+ *(Bytes.data() + Index) & 0xff);
+ Size = 1; // skip exactly one illegible byte and move on.
+ } 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);
+ // Reading the symbol table didn't work, disassemble the whole section.
+ uint64_t SectAddress = Sections[SectIdx].getAddress();
+ uint64_t SectSize = Sections[SectIdx].getSize();
uint64_t InstSize;
for (uint64_t Index = 0; Index < SectSize; Index += InstSize) {
MCInst Inst;
- if (DisAsm->getInstruction(Inst, InstSize, memoryObject, Index,
- DebugOut, nulls())) {
- outs() << format("%8" PRIx64 ":\t", SectAddress + Index);
- DumpBytes(StringRef(Bytes.data() + Index, InstSize));
+ 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
+ unsigned int Arch = MachOOF->getArch();
+ if (Arch == Triple::x86_64 || Arch == Triple::x86){
+ outs() << format("\t.byte 0x%02x #bad opcode\n",
+ *(Bytes.data() + Index) & 0xff);
+ InstSize = 1; // skip exactly one illegible byte and move on.
+ } else {
+ errs() << "llvm-objdump: warning: invalid instruction encoding\n";
+ if (InstSize == 0)
+ InstSize = 1; // skip illegible bytes
+ }
}
}
}
+ if (SymbolizerInfo.method != nullptr)
+ free(SymbolizerInfo.method);
+ if (SymbolizerInfo.demangled_name != nullptr)
+ free(SymbolizerInfo.demangled_name);
+ if (SymbolizerInfo.bindtable != nullptr)
+ delete SymbolizerInfo.bindtable;
+ }
+}
+
+
+//===----------------------------------------------------------------------===//
+// __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();
+
+ 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 ||
+ Command.C.cmd == MachO::LC_ID_DYLIB ||
+ Command.C.cmd == MachO::LC_LOAD_WEAK_DYLIB ||
+ Command.C.cmd == MachO::LC_REEXPORT_DYLIB ||
+ Command.C.cmd == MachO::LC_LAZY_LOAD_DYLIB ||
+ Command.C.cmd == MachO::LC_LOAD_UPWARD_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;
+ Info.Address = Section.getAddress();
+ Info.Size = Section.getSize();
+ 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 "<<bad library ordinal>>";
+ 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
+ StringRef Attr;
+ if (Entry.flags() & MachO::BIND_SYMBOL_FLAGS_WEAK_IMPORT)
+ Attr = " (weak_import)";
+ outs() << left_justify(SegmentName, 8) << " "
+ << left_justify(SectionName, 18) << " "
+ << format_hex(Address, 10, true) << " "
+ << left_justify(Entry.typeName(), 8) << " "
+ << format_decimal(Entry.addend(), 8) << " "
+ << left_justify(ordinalName(Obj, Entry.ordinal()), 16) << " "
+ << Entry.symbolName()
+ << Attr << "\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() << left_justify(SegmentName, 8) << " "
+ << left_justify(SectionName, 18) << " "
+ << format_hex(Address, 10, true) << " "
+ << left_justify(ordinalName(Obj, Entry.ordinal()), 16) << " "
+ << 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() << left_justify(SegmentName, 8) << " "
+ << left_justify(SectionName, 18) << " "
+ << format_hex(Address, 10, true) << " "
+ << left_justify(Entry.typeName(), 8) << " "
+ << format_decimal(Entry.addend(), 8) << " "
+ << Entry.symbolName() << "\n";
+ }
+}
+
+// get_dyld_bind_info_symbolname() is used for disassembly and passed an
+// address, ReferenceValue, in the Mach-O file and looks in the dyld bind
+// information for that address. If the address is found its binding symbol
+// name is returned. If not nullptr is returned.
+static const char *get_dyld_bind_info_symbolname(uint64_t ReferenceValue,
+ struct DisassembleInfo *info) {
+ if (info->bindtable == nullptr) {
+ info->bindtable = new (BindTable);
+ SegInfo sectionTable(info->O);
+ for (const llvm::object::MachOBindEntry &Entry : info->O->bindTable()) {
+ uint32_t SegIndex = Entry.segmentIndex();
+ uint64_t OffsetInSeg = Entry.segmentOffset();
+ uint64_t Address = sectionTable.address(SegIndex, OffsetInSeg);
+ const char *SymbolName = nullptr;
+ StringRef name = Entry.symbolName();
+ if (!name.empty())
+ SymbolName = name.data();
+ info->bindtable->push_back(std::make_pair(Address, SymbolName));
+ }
+ }
+ for (bind_table_iterator BI = info->bindtable->begin(),
+ BE = info->bindtable->end();
+ BI != BE; ++BI) {
+ uint64_t Address = BI->first;
+ if (ReferenceValue == Address) {
+ const char *SymbolName = BI->second;
+ return SymbolName;
+ }
}
+ return nullptr;
}
projects / oota-llvm.git / blobdiff