mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-10-31 08:16:47 +00:00
eae4673c2f
make_error_code(object_error) is slow because object::object_category() uses a ManagedStatic variable. But the real problem is that the function is called too frequently. This patch uses std::error_code() instead of object_error::success. In most cases, we return "success", so this patch reduces number of function calls to that function. http://reviews.llvm.org/D10333 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239409 91177308-0d34-0410-b5e6-96231b3b80d8
511 lines
18 KiB
C++
511 lines
18 KiB
C++
//===- MachO.h - MachO object file implementation ---------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file declares the MachOObjectFile class, which implement the ObjectFile
|
|
// interface for MachO files.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_OBJECT_MACHO_H
|
|
#define LLVM_OBJECT_MACHO_H
|
|
|
|
#include "llvm/ADT/ArrayRef.h"
|
|
#include "llvm/ADT/SmallVector.h"
|
|
#include "llvm/ADT/Triple.h"
|
|
#include "llvm/Object/ObjectFile.h"
|
|
#include "llvm/Support/MachO.h"
|
|
|
|
namespace llvm {
|
|
namespace object {
|
|
|
|
/// DiceRef - This is a value type class that represents a single
|
|
/// data in code entry in the table in a Mach-O object file.
|
|
class DiceRef {
|
|
DataRefImpl DicePimpl;
|
|
const ObjectFile *OwningObject;
|
|
|
|
public:
|
|
DiceRef() : OwningObject(nullptr) { }
|
|
|
|
DiceRef(DataRefImpl DiceP, const ObjectFile *Owner);
|
|
|
|
bool operator==(const DiceRef &Other) const;
|
|
bool operator<(const DiceRef &Other) const;
|
|
|
|
void moveNext();
|
|
|
|
std::error_code getOffset(uint32_t &Result) const;
|
|
std::error_code getLength(uint16_t &Result) const;
|
|
std::error_code getKind(uint16_t &Result) const;
|
|
|
|
DataRefImpl getRawDataRefImpl() const;
|
|
const ObjectFile *getObjectFile() const;
|
|
};
|
|
typedef content_iterator<DiceRef> dice_iterator;
|
|
|
|
/// ExportEntry encapsulates the current-state-of-the-walk used when doing a
|
|
/// non-recursive walk of the trie data structure. This allows you to iterate
|
|
/// across all exported symbols using:
|
|
/// for (const llvm::object::ExportEntry &AnExport : Obj->exports()) {
|
|
/// }
|
|
class ExportEntry {
|
|
public:
|
|
ExportEntry(ArrayRef<uint8_t> Trie);
|
|
|
|
StringRef name() const;
|
|
uint64_t flags() const;
|
|
uint64_t address() const;
|
|
uint64_t other() const;
|
|
StringRef otherName() const;
|
|
uint32_t nodeOffset() const;
|
|
|
|
bool operator==(const ExportEntry &) const;
|
|
|
|
void moveNext();
|
|
|
|
private:
|
|
friend class MachOObjectFile;
|
|
void moveToFirst();
|
|
void moveToEnd();
|
|
uint64_t readULEB128(const uint8_t *&p);
|
|
void pushDownUntilBottom();
|
|
void pushNode(uint64_t Offset);
|
|
|
|
// Represents a node in the mach-o exports trie.
|
|
struct NodeState {
|
|
NodeState(const uint8_t *Ptr);
|
|
const uint8_t *Start;
|
|
const uint8_t *Current;
|
|
uint64_t Flags;
|
|
uint64_t Address;
|
|
uint64_t Other;
|
|
const char *ImportName;
|
|
unsigned ChildCount;
|
|
unsigned NextChildIndex;
|
|
unsigned ParentStringLength;
|
|
bool IsExportNode;
|
|
};
|
|
|
|
ArrayRef<uint8_t> Trie;
|
|
SmallString<256> CumulativeString;
|
|
SmallVector<NodeState, 16> Stack;
|
|
bool Malformed;
|
|
bool Done;
|
|
};
|
|
typedef content_iterator<ExportEntry> export_iterator;
|
|
|
|
/// MachORebaseEntry encapsulates the current state in the decompression of
|
|
/// rebasing opcodes. This allows you to iterate through the compressed table of
|
|
/// rebasing using:
|
|
/// for (const llvm::object::MachORebaseEntry &Entry : Obj->rebaseTable()) {
|
|
/// }
|
|
class MachORebaseEntry {
|
|
public:
|
|
MachORebaseEntry(ArrayRef<uint8_t> opcodes, bool is64Bit);
|
|
|
|
uint32_t segmentIndex() const;
|
|
uint64_t segmentOffset() const;
|
|
StringRef typeName() const;
|
|
|
|
bool operator==(const MachORebaseEntry &) const;
|
|
|
|
void moveNext();
|
|
|
|
private:
|
|
friend class MachOObjectFile;
|
|
void moveToFirst();
|
|
void moveToEnd();
|
|
uint64_t readULEB128();
|
|
|
|
ArrayRef<uint8_t> Opcodes;
|
|
const uint8_t *Ptr;
|
|
uint64_t SegmentOffset;
|
|
uint32_t SegmentIndex;
|
|
uint64_t RemainingLoopCount;
|
|
uint64_t AdvanceAmount;
|
|
uint8_t RebaseType;
|
|
uint8_t PointerSize;
|
|
bool Malformed;
|
|
bool Done;
|
|
};
|
|
typedef content_iterator<MachORebaseEntry> rebase_iterator;
|
|
|
|
/// MachOBindEntry encapsulates the current state in the decompression of
|
|
/// binding opcodes. This allows you to iterate through the compressed table of
|
|
/// bindings using:
|
|
/// for (const llvm::object::MachOBindEntry &Entry : Obj->bindTable()) {
|
|
/// }
|
|
class MachOBindEntry {
|
|
public:
|
|
enum class Kind { Regular, Lazy, Weak };
|
|
|
|
MachOBindEntry(ArrayRef<uint8_t> Opcodes, bool is64Bit, MachOBindEntry::Kind);
|
|
|
|
uint32_t segmentIndex() const;
|
|
uint64_t segmentOffset() const;
|
|
StringRef typeName() const;
|
|
StringRef symbolName() const;
|
|
uint32_t flags() const;
|
|
int64_t addend() const;
|
|
int ordinal() const;
|
|
|
|
bool operator==(const MachOBindEntry &) const;
|
|
|
|
void moveNext();
|
|
|
|
private:
|
|
friend class MachOObjectFile;
|
|
void moveToFirst();
|
|
void moveToEnd();
|
|
uint64_t readULEB128();
|
|
int64_t readSLEB128();
|
|
|
|
ArrayRef<uint8_t> Opcodes;
|
|
const uint8_t *Ptr;
|
|
uint64_t SegmentOffset;
|
|
uint32_t SegmentIndex;
|
|
StringRef SymbolName;
|
|
int Ordinal;
|
|
uint32_t Flags;
|
|
int64_t Addend;
|
|
uint64_t RemainingLoopCount;
|
|
uint64_t AdvanceAmount;
|
|
uint8_t BindType;
|
|
uint8_t PointerSize;
|
|
Kind TableKind;
|
|
bool Malformed;
|
|
bool Done;
|
|
};
|
|
typedef content_iterator<MachOBindEntry> bind_iterator;
|
|
|
|
class MachOObjectFile : public ObjectFile {
|
|
public:
|
|
struct LoadCommandInfo {
|
|
const char *Ptr; // Where in memory the load command is.
|
|
MachO::load_command C; // The command itself.
|
|
};
|
|
typedef SmallVector<LoadCommandInfo, 4> LoadCommandList;
|
|
typedef LoadCommandList::const_iterator load_command_iterator;
|
|
|
|
MachOObjectFile(MemoryBufferRef Object, bool IsLittleEndian, bool Is64Bits,
|
|
std::error_code &EC);
|
|
|
|
void moveSymbolNext(DataRefImpl &Symb) const override;
|
|
std::error_code getSymbolName(DataRefImpl Symb,
|
|
StringRef &Res) const override;
|
|
|
|
// MachO specific.
|
|
std::error_code getIndirectName(DataRefImpl Symb, StringRef &Res) const;
|
|
unsigned getSectionType(SectionRef Sec) const;
|
|
|
|
std::error_code getSymbolAddress(DataRefImpl Symb,
|
|
uint64_t &Res) const override;
|
|
uint32_t getSymbolAlignment(DataRefImpl Symb) const override;
|
|
uint64_t getSymbolSize(DataRefImpl Symb) const override;
|
|
std::error_code getSymbolType(DataRefImpl Symb,
|
|
SymbolRef::Type &Res) const override;
|
|
uint32_t getSymbolFlags(DataRefImpl Symb) const override;
|
|
std::error_code getSymbolSection(DataRefImpl Symb,
|
|
section_iterator &Res) const override;
|
|
|
|
void moveSectionNext(DataRefImpl &Sec) const override;
|
|
std::error_code getSectionName(DataRefImpl Sec,
|
|
StringRef &Res) const override;
|
|
uint64_t getSectionAddress(DataRefImpl Sec) const override;
|
|
uint64_t getSectionSize(DataRefImpl Sec) const override;
|
|
std::error_code getSectionContents(DataRefImpl Sec,
|
|
StringRef &Res) const override;
|
|
uint64_t getSectionAlignment(DataRefImpl Sec) const override;
|
|
bool isSectionText(DataRefImpl Sec) const override;
|
|
bool isSectionData(DataRefImpl Sec) const override;
|
|
bool isSectionBSS(DataRefImpl Sec) const override;
|
|
bool isSectionVirtual(DataRefImpl Sec) const override;
|
|
bool sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb) const override;
|
|
relocation_iterator section_rel_begin(DataRefImpl Sec) const override;
|
|
relocation_iterator section_rel_end(DataRefImpl Sec) const override;
|
|
|
|
void moveRelocationNext(DataRefImpl &Rel) const override;
|
|
std::error_code getRelocationAddress(DataRefImpl Rel,
|
|
uint64_t &Res) const override;
|
|
std::error_code getRelocationOffset(DataRefImpl Rel,
|
|
uint64_t &Res) const override;
|
|
symbol_iterator getRelocationSymbol(DataRefImpl Rel) const override;
|
|
section_iterator getRelocationSection(DataRefImpl Rel) const override;
|
|
std::error_code getRelocationType(DataRefImpl Rel,
|
|
uint64_t &Res) const override;
|
|
std::error_code
|
|
getRelocationTypeName(DataRefImpl Rel,
|
|
SmallVectorImpl<char> &Result) const override;
|
|
std::error_code getRelocationHidden(DataRefImpl Rel,
|
|
bool &Result) const override;
|
|
uint8_t getRelocationLength(DataRefImpl Rel) const;
|
|
|
|
// MachO specific.
|
|
std::error_code getLibraryShortNameByIndex(unsigned Index, StringRef &) const;
|
|
|
|
// TODO: Would be useful to have an iterator based version
|
|
// of the load command interface too.
|
|
|
|
basic_symbol_iterator symbol_begin_impl() const override;
|
|
basic_symbol_iterator symbol_end_impl() const override;
|
|
|
|
// MachO specific.
|
|
basic_symbol_iterator getSymbolByIndex(unsigned Index) const;
|
|
|
|
section_iterator section_begin() const override;
|
|
section_iterator section_end() const override;
|
|
|
|
uint8_t getBytesInAddress() const override;
|
|
|
|
StringRef getFileFormatName() const override;
|
|
unsigned getArch() const override;
|
|
Triple getArch(const char **McpuDefault, Triple *ThumbTriple) const;
|
|
|
|
relocation_iterator section_rel_begin(unsigned Index) const;
|
|
relocation_iterator section_rel_end(unsigned Index) const;
|
|
|
|
dice_iterator begin_dices() const;
|
|
dice_iterator end_dices() const;
|
|
|
|
load_command_iterator begin_load_commands() const;
|
|
load_command_iterator end_load_commands() const;
|
|
iterator_range<load_command_iterator> load_commands() const;
|
|
|
|
/// For use iterating over all exported symbols.
|
|
iterator_range<export_iterator> exports() const;
|
|
|
|
/// For use examining a trie not in a MachOObjectFile.
|
|
static iterator_range<export_iterator> exports(ArrayRef<uint8_t> Trie);
|
|
|
|
/// For use iterating over all rebase table entries.
|
|
iterator_range<rebase_iterator> rebaseTable() const;
|
|
|
|
/// For use examining rebase opcodes not in a MachOObjectFile.
|
|
static iterator_range<rebase_iterator> rebaseTable(ArrayRef<uint8_t> Opcodes,
|
|
bool is64);
|
|
|
|
/// For use iterating over all bind table entries.
|
|
iterator_range<bind_iterator> bindTable() const;
|
|
|
|
/// For use iterating over all lazy bind table entries.
|
|
iterator_range<bind_iterator> lazyBindTable() const;
|
|
|
|
/// For use iterating over all lazy bind table entries.
|
|
iterator_range<bind_iterator> weakBindTable() const;
|
|
|
|
/// For use examining bind opcodes not in a MachOObjectFile.
|
|
static iterator_range<bind_iterator> bindTable(ArrayRef<uint8_t> Opcodes,
|
|
bool is64,
|
|
MachOBindEntry::Kind);
|
|
|
|
|
|
// In a MachO file, sections have a segment name. This is used in the .o
|
|
// files. They have a single segment, but this field specifies which segment
|
|
// a section should be put in in the final object.
|
|
StringRef getSectionFinalSegmentName(DataRefImpl Sec) const;
|
|
|
|
// Names are stored as 16 bytes. These returns the raw 16 bytes without
|
|
// interpreting them as a C string.
|
|
ArrayRef<char> getSectionRawName(DataRefImpl Sec) const;
|
|
ArrayRef<char> getSectionRawFinalSegmentName(DataRefImpl Sec) const;
|
|
|
|
// MachO specific Info about relocations.
|
|
bool isRelocationScattered(const MachO::any_relocation_info &RE) const;
|
|
unsigned getPlainRelocationSymbolNum(
|
|
const MachO::any_relocation_info &RE) const;
|
|
bool getPlainRelocationExternal(const MachO::any_relocation_info &RE) const;
|
|
bool getScatteredRelocationScattered(
|
|
const MachO::any_relocation_info &RE) const;
|
|
uint32_t getScatteredRelocationValue(
|
|
const MachO::any_relocation_info &RE) const;
|
|
uint32_t getScatteredRelocationType(
|
|
const MachO::any_relocation_info &RE) const;
|
|
unsigned getAnyRelocationAddress(const MachO::any_relocation_info &RE) const;
|
|
unsigned getAnyRelocationPCRel(const MachO::any_relocation_info &RE) const;
|
|
unsigned getAnyRelocationLength(const MachO::any_relocation_info &RE) const;
|
|
unsigned getAnyRelocationType(const MachO::any_relocation_info &RE) const;
|
|
SectionRef getAnyRelocationSection(const MachO::any_relocation_info &RE) const;
|
|
|
|
// MachO specific structures.
|
|
MachO::section getSection(DataRefImpl DRI) const;
|
|
MachO::section_64 getSection64(DataRefImpl DRI) const;
|
|
MachO::section getSection(const LoadCommandInfo &L, unsigned Index) const;
|
|
MachO::section_64 getSection64(const LoadCommandInfo &L,unsigned Index) const;
|
|
MachO::nlist getSymbolTableEntry(DataRefImpl DRI) const;
|
|
MachO::nlist_64 getSymbol64TableEntry(DataRefImpl DRI) const;
|
|
|
|
MachO::linkedit_data_command
|
|
getLinkeditDataLoadCommand(const LoadCommandInfo &L) const;
|
|
MachO::segment_command
|
|
getSegmentLoadCommand(const LoadCommandInfo &L) const;
|
|
MachO::segment_command_64
|
|
getSegment64LoadCommand(const LoadCommandInfo &L) const;
|
|
MachO::linker_option_command
|
|
getLinkerOptionLoadCommand(const LoadCommandInfo &L) const;
|
|
MachO::version_min_command
|
|
getVersionMinLoadCommand(const LoadCommandInfo &L) const;
|
|
MachO::dylib_command
|
|
getDylibIDLoadCommand(const LoadCommandInfo &L) const;
|
|
MachO::dyld_info_command
|
|
getDyldInfoLoadCommand(const LoadCommandInfo &L) const;
|
|
MachO::dylinker_command
|
|
getDylinkerCommand(const LoadCommandInfo &L) const;
|
|
MachO::uuid_command
|
|
getUuidCommand(const LoadCommandInfo &L) const;
|
|
MachO::rpath_command
|
|
getRpathCommand(const LoadCommandInfo &L) const;
|
|
MachO::source_version_command
|
|
getSourceVersionCommand(const LoadCommandInfo &L) const;
|
|
MachO::entry_point_command
|
|
getEntryPointCommand(const LoadCommandInfo &L) const;
|
|
MachO::encryption_info_command
|
|
getEncryptionInfoCommand(const LoadCommandInfo &L) const;
|
|
MachO::encryption_info_command_64
|
|
getEncryptionInfoCommand64(const LoadCommandInfo &L) const;
|
|
MachO::sub_framework_command
|
|
getSubFrameworkCommand(const LoadCommandInfo &L) const;
|
|
MachO::sub_umbrella_command
|
|
getSubUmbrellaCommand(const LoadCommandInfo &L) const;
|
|
MachO::sub_library_command
|
|
getSubLibraryCommand(const LoadCommandInfo &L) const;
|
|
MachO::sub_client_command
|
|
getSubClientCommand(const LoadCommandInfo &L) const;
|
|
MachO::routines_command
|
|
getRoutinesCommand(const LoadCommandInfo &L) const;
|
|
MachO::routines_command_64
|
|
getRoutinesCommand64(const LoadCommandInfo &L) const;
|
|
MachO::thread_command
|
|
getThreadCommand(const LoadCommandInfo &L) const;
|
|
|
|
MachO::any_relocation_info getRelocation(DataRefImpl Rel) const;
|
|
MachO::data_in_code_entry getDice(DataRefImpl Rel) const;
|
|
const MachO::mach_header &getHeader() const;
|
|
const MachO::mach_header_64 &getHeader64() const;
|
|
uint32_t
|
|
getIndirectSymbolTableEntry(const MachO::dysymtab_command &DLC,
|
|
unsigned Index) const;
|
|
MachO::data_in_code_entry getDataInCodeTableEntry(uint32_t DataOffset,
|
|
unsigned Index) const;
|
|
MachO::symtab_command getSymtabLoadCommand() const;
|
|
MachO::dysymtab_command getDysymtabLoadCommand() const;
|
|
MachO::linkedit_data_command getDataInCodeLoadCommand() const;
|
|
MachO::linkedit_data_command getLinkOptHintsLoadCommand() const;
|
|
ArrayRef<uint8_t> getDyldInfoRebaseOpcodes() const;
|
|
ArrayRef<uint8_t> getDyldInfoBindOpcodes() const;
|
|
ArrayRef<uint8_t> getDyldInfoWeakBindOpcodes() const;
|
|
ArrayRef<uint8_t> getDyldInfoLazyBindOpcodes() const;
|
|
ArrayRef<uint8_t> getDyldInfoExportsTrie() const;
|
|
ArrayRef<uint8_t> getUuid() const;
|
|
|
|
StringRef getStringTableData() const;
|
|
bool is64Bit() const;
|
|
void ReadULEB128s(uint64_t Index, SmallVectorImpl<uint64_t> &Out) const;
|
|
|
|
static StringRef guessLibraryShortName(StringRef Name, bool &isFramework,
|
|
StringRef &Suffix);
|
|
|
|
static Triple::ArchType getArch(uint32_t CPUType);
|
|
static Triple getArch(uint32_t CPUType, uint32_t CPUSubType,
|
|
const char **McpuDefault = nullptr);
|
|
static Triple getThumbArch(uint32_t CPUType, uint32_t CPUSubType,
|
|
const char **McpuDefault = nullptr);
|
|
static Triple getArch(uint32_t CPUType, uint32_t CPUSubType,
|
|
const char **McpuDefault, Triple *ThumbTriple);
|
|
static bool isValidArch(StringRef ArchFlag);
|
|
static Triple getHostArch();
|
|
|
|
bool isRelocatableObject() const override;
|
|
|
|
bool hasPageZeroSegment() const { return HasPageZeroSegment; }
|
|
|
|
static bool classof(const Binary *v) {
|
|
return v->isMachO();
|
|
}
|
|
|
|
private:
|
|
union {
|
|
MachO::mach_header_64 Header64;
|
|
MachO::mach_header Header;
|
|
};
|
|
typedef SmallVector<const char*, 1> SectionList;
|
|
SectionList Sections;
|
|
typedef SmallVector<const char*, 1> LibraryList;
|
|
LibraryList Libraries;
|
|
LoadCommandList LoadCommands;
|
|
typedef SmallVector<StringRef, 1> LibraryShortName;
|
|
mutable LibraryShortName LibrariesShortNames;
|
|
const char *SymtabLoadCmd;
|
|
const char *DysymtabLoadCmd;
|
|
const char *DataInCodeLoadCmd;
|
|
const char *LinkOptHintsLoadCmd;
|
|
const char *DyldInfoLoadCmd;
|
|
const char *UuidLoadCmd;
|
|
bool HasPageZeroSegment;
|
|
};
|
|
|
|
/// DiceRef
|
|
inline DiceRef::DiceRef(DataRefImpl DiceP, const ObjectFile *Owner)
|
|
: DicePimpl(DiceP) , OwningObject(Owner) {}
|
|
|
|
inline bool DiceRef::operator==(const DiceRef &Other) const {
|
|
return DicePimpl == Other.DicePimpl;
|
|
}
|
|
|
|
inline bool DiceRef::operator<(const DiceRef &Other) const {
|
|
return DicePimpl < Other.DicePimpl;
|
|
}
|
|
|
|
inline void DiceRef::moveNext() {
|
|
const MachO::data_in_code_entry *P =
|
|
reinterpret_cast<const MachO::data_in_code_entry *>(DicePimpl.p);
|
|
DicePimpl.p = reinterpret_cast<uintptr_t>(P + 1);
|
|
}
|
|
|
|
// Since a Mach-O data in code reference, a DiceRef, can only be created when
|
|
// the OwningObject ObjectFile is a MachOObjectFile a static_cast<> is used for
|
|
// the methods that get the values of the fields of the reference.
|
|
|
|
inline std::error_code DiceRef::getOffset(uint32_t &Result) const {
|
|
const MachOObjectFile *MachOOF =
|
|
static_cast<const MachOObjectFile *>(OwningObject);
|
|
MachO::data_in_code_entry Dice = MachOOF->getDice(DicePimpl);
|
|
Result = Dice.offset;
|
|
return std::error_code();
|
|
}
|
|
|
|
inline std::error_code DiceRef::getLength(uint16_t &Result) const {
|
|
const MachOObjectFile *MachOOF =
|
|
static_cast<const MachOObjectFile *>(OwningObject);
|
|
MachO::data_in_code_entry Dice = MachOOF->getDice(DicePimpl);
|
|
Result = Dice.length;
|
|
return std::error_code();
|
|
}
|
|
|
|
inline std::error_code DiceRef::getKind(uint16_t &Result) const {
|
|
const MachOObjectFile *MachOOF =
|
|
static_cast<const MachOObjectFile *>(OwningObject);
|
|
MachO::data_in_code_entry Dice = MachOOF->getDice(DicePimpl);
|
|
Result = Dice.kind;
|
|
return std::error_code();
|
|
}
|
|
|
|
inline DataRefImpl DiceRef::getRawDataRefImpl() const {
|
|
return DicePimpl;
|
|
}
|
|
|
|
inline const ObjectFile *DiceRef::getObjectFile() const {
|
|
return OwningObject;
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|