LIEF: Library to Instrument Executable Formats Version 0.17.0
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Public Types | Public Member Functions | Static Public Member Functions | List of all members
LIEF::MachO::DynamicSymbolCommand Class Reference

Class that represents the LC_DYSYMTAB command. More...

#include <DynamicSymbolCommand.hpp>

Inheritance diagram for LIEF::MachO::DynamicSymbolCommand:
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Collaboration diagram for LIEF::MachO::DynamicSymbolCommand:
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Public Types

using indirect_symbols_t = std::vector<Symbol*>
 Container for the indirect symbols references (owned by MachO::Binary)
 
using it_indirect_symbols = ref_iterator<indirect_symbols_t&>
 Iterator for the indirect symbols referenced by this command.
 
using it_const_indirect_symbols = const_ref_iterator<const indirect_symbols_t&>
 
- Public Types inherited from LIEF::MachO::LoadCommand
enum class  TYPE : uint64_t {
  UNKNOWN = 0 , SEGMENT = 0x00000001u , SYMTAB = 0x00000002u , SYMSEG = 0x00000003u ,
  THREAD = 0x00000004u , UNIXTHREAD = 0x00000005u , LOADFVMLIB = 0x00000006u , IDFVMLIB = 0x00000007u ,
  IDENT = 0x00000008u , FVMFILE = 0x00000009u , PREPAGE = 0x0000000Au , DYSYMTAB = 0x0000000Bu ,
  LOAD_DYLIB = 0x0000000Cu , ID_DYLIB = 0x0000000Du , LOAD_DYLINKER = 0x0000000Eu , ID_DYLINKER = 0x0000000Fu ,
  PREBOUND_DYLIB = 0x00000010u , ROUTINES = 0x00000011u , SUB_FRAMEWORK = 0x00000012u , SUB_UMBRELLA = 0x00000013u ,
  SUB_CLIENT = 0x00000014u , SUB_LIBRARY = 0x00000015u , TWOLEVEL_HINTS = 0x00000016u , PREBIND_CKSUM = 0x00000017u ,
  LOAD_WEAK_DYLIB = 0x80000018u , SEGMENT_64 = 0x00000019u , ROUTINES_64 = 0x0000001Au , UUID = 0x0000001Bu ,
  RPATH = 0x8000001Cu , CODE_SIGNATURE = 0x0000001Du , SEGMENT_SPLIT_INFO = 0x0000001Eu , REEXPORT_DYLIB = 0x8000001Fu ,
  LAZY_LOAD_DYLIB = 0x00000020u , ENCRYPTION_INFO = 0x00000021u , DYLD_INFO = 0x00000022u , DYLD_INFO_ONLY = 0x80000022u ,
  LOAD_UPWARD_DYLIB = 0x80000023u , VERSION_MIN_MACOSX = 0x00000024u , VERSION_MIN_IPHONEOS = 0x00000025u , FUNCTION_STARTS = 0x00000026u ,
  DYLD_ENVIRONMENT = 0x00000027u , MAIN = 0x80000028u , DATA_IN_CODE = 0x00000029u , SOURCE_VERSION = 0x0000002Au ,
  DYLIB_CODE_SIGN_DRS = 0x0000002Bu , ENCRYPTION_INFO_64 = 0x0000002Cu , LINKER_OPTION = 0x0000002Du , LINKER_OPTIMIZATION_HINT = 0x0000002Eu ,
  VERSION_MIN_TVOS = 0x0000002Fu , VERSION_MIN_WATCHOS = 0x00000030u , NOTE = 0x00000031u , BUILD_VERSION = 0x00000032u ,
  DYLD_EXPORTS_TRIE = 0x80000033u , DYLD_CHAINED_FIXUPS = 0x80000034u , FILESET_ENTRY = 0x80000035u , ATOM_INFO = 0x00000036u ,
  LIEF_UNKNOWN = 0xffee0001u
}
 
using raw_t = std::vector<uint8_t>
 
- Public Types inherited from LIEF::Object
template<class T >
using output_t = add_pointer_t<decay_t<T>>
 
template<class T >
using output_const_t = add_pointer_t<add_const_t<decay_t<T>>>
 

Public Member Functions

 DynamicSymbolCommand ()
 
 DynamicSymbolCommand (const details::dysymtab_command &cmd)
 
DynamicSymbolCommand & operator= (const DynamicSymbolCommand &copy)=default
 
 DynamicSymbolCommand (const DynamicSymbolCommand &copy)=default
 
std::unique_ptr< LoadCommand > clone () const override
 
 ~DynamicSymbolCommand () override=default
 
void accept (Visitor &visitor) const override
 
std::ostream & print (std::ostream &os) const override
 
uint32_t idx_local_symbol () const
 Index of the first symbol in the group of local symbols.
 
uint32_t nb_local_symbols () const
 Number of symbols in the group of local symbols.
 
uint32_t idx_external_define_symbol () const
 Index of the first symbol in the group of defined external symbols.
 
uint32_t nb_external_define_symbols () const
 Number of symbols in the group of defined external symbols.
 
uint32_t idx_undefined_symbol () const
 Index of the first symbol in the group of undefined external symbols.
 
uint32_t nb_undefined_symbols () const
 Number of symbols in the group of undefined external symbols.
 
uint32_t toc_offset () const
 Byte offset from the start of the file to the table of contents data.
 
uint32_t nb_toc () const
 Number of entries in the table of contents.
 
uint32_t module_table_offset () const
 Byte offset from the start of the file to the module table data.
 
uint32_t nb_module_table () const
 Number of entries in the module table.
 
uint32_t external_reference_symbol_offset () const
 Byte offset from the start of the file to the external reference table data.
 
uint32_t nb_external_reference_symbols () const
 Number of entries in the external reference table.
 
uint32_t indirect_symbol_offset () const
 Byte offset from the start of the file to the indirect symbol table data.
 
uint32_t nb_indirect_symbols () const
 Number of entries in the indirect symbol table.
 
uint32_t external_relocation_offset () const
 Byte offset from the start of the file to the external relocation table data.
 
uint32_t nb_external_relocations () const
 Number of entries in the external relocation table.
 
uint32_t local_relocation_offset () const
 Byte offset from the start of the file to the local relocation table data.
 
uint32_t nb_local_relocations () const
 Number of entries in the local relocation table.
 
void idx_local_symbol (uint32_t value)
 
void nb_local_symbols (uint32_t value)
 
void idx_external_define_symbol (uint32_t value)
 
void nb_external_define_symbols (uint32_t value)
 
void idx_undefined_symbol (uint32_t value)
 
void nb_undefined_symbols (uint32_t value)
 
void toc_offset (uint32_t value)
 
void nb_toc (uint32_t value)
 
void module_table_offset (uint32_t value)
 
void nb_module_table (uint32_t value)
 
void external_reference_symbol_offset (uint32_t value)
 
void nb_external_reference_symbols (uint32_t value)
 
void indirect_symbol_offset (uint32_t value)
 
void nb_indirect_symbols (uint32_t value)
 
void external_relocation_offset (uint32_t value)
 
void nb_external_relocations (uint32_t value)
 
void local_relocation_offset (uint32_t value)
 
void nb_local_relocations (uint32_t value)
 
it_indirect_symbols indirect_symbols ()
 Iterator over the indirect symbols indexed by this command.
 
it_const_indirect_symbols indirect_symbols () const
 
- Public Member Functions inherited from LIEF::MachO::LoadCommand
 LoadCommand ()=default
 
 LoadCommand (const details::load_command &command)
 
 LoadCommand (LoadCommand::TYPE type, uint32_t size)
 
LoadCommand & operator= (const LoadCommand &copy)=default
 
 LoadCommand (const LoadCommand &copy)=default
 
void swap (LoadCommand &other) noexcept
 
 ~LoadCommand () override=default
 
LoadCommand::TYPE command () const
 Command type.
 
uint32_t size () const
 Size of the command (should be greather than sizeof(load_command))
 
span< const uint8_t > data () const
 Raw command.
 
uint64_t command_offset () const
 Offset of the command within the Load Command Table
 
void data (raw_t data)
 
void command (LoadCommand::TYPE command)
 
void size (uint32_t size)
 
void command_offset (uint64_t offset)
 
void accept (Visitor &visitor) const override
 
template<class T >
const T * cast () const
 
template<class T >
T * cast ()
 
- Public Member Functions inherited from LIEF::Object
 Object ()
 
 Object (const Object &other)
 
Object & operator= (const Object &other)
 
template<class T >
output_t< T > as ()
 
template<class T >
output_const_t< T > as () const
 
virtual bool operator== (const Object &other) const
 
virtual bool operator!= (const Object &other) const
 
virtual ~Object ()
 

Static Public Member Functions

static bool classof (const LoadCommand *cmd)
 
- Static Public Member Functions inherited from LIEF::MachO::LoadCommand
static bool is_linkedit_data (const LoadCommand &cmd)
 

Detailed Description

Class that represents the LC_DYSYMTAB command.

This command completes the LC_SYMTAB (SymbolCommand) to provide a better granularity over the symbols layout.

Member Typedef Documentation

◆ indirect_symbols_t

using LIEF::MachO::DynamicSymbolCommand::indirect_symbols_t = std::vector<Symbol*>

Container for the indirect symbols references (owned by MachO::Binary)

◆ it_const_indirect_symbols

using LIEF::MachO::DynamicSymbolCommand::it_const_indirect_symbols = const_ref_iterator<const indirect_symbols_t&>

◆ it_indirect_symbols

using LIEF::MachO::DynamicSymbolCommand::it_indirect_symbols = ref_iterator<indirect_symbols_t&>

Iterator for the indirect symbols referenced by this command.

Constructor & Destructor Documentation

◆ DynamicSymbolCommand() [1/3]

LIEF::MachO::DynamicSymbolCommand::DynamicSymbolCommand ( )

◆ DynamicSymbolCommand() [2/3]

LIEF::MachO::DynamicSymbolCommand::DynamicSymbolCommand ( const details::dysymtab_command & cmd)

◆ DynamicSymbolCommand() [3/3]

LIEF::MachO::DynamicSymbolCommand::DynamicSymbolCommand ( const DynamicSymbolCommand & copy)
default

◆ ~DynamicSymbolCommand()

LIEF::MachO::DynamicSymbolCommand::~DynamicSymbolCommand ( )
overridedefault

Member Function Documentation

◆ accept()

void LIEF::MachO::DynamicSymbolCommand::accept ( Visitor & visitor) const
overridevirtual

Implements LIEF::Object.

◆ classof()

static bool LIEF::MachO::DynamicSymbolCommand::classof ( const LoadCommand * cmd)
inlinestatic

References LIEF::MachO::LoadCommand::command().

◆ clone()

std::unique_ptr< LoadCommand > LIEF::MachO::DynamicSymbolCommand::clone ( ) const
inlineoverridevirtual

Reimplemented from LIEF::MachO::LoadCommand.

◆ external_reference_symbol_offset() [1/2]

uint32_t LIEF::MachO::DynamicSymbolCommand::external_reference_symbol_offset ( ) const
inline

Byte offset from the start of the file to the external reference table data.

This field seems unused by recent Mach-O loader and should be set to 0

◆ external_reference_symbol_offset() [2/2]

void LIEF::MachO::DynamicSymbolCommand::external_reference_symbol_offset ( uint32_t value)
inline

◆ external_relocation_offset() [1/2]

uint32_t LIEF::MachO::DynamicSymbolCommand::external_relocation_offset ( ) const
inline

Byte offset from the start of the file to the external relocation table data.

This field seems unused by recent Mach-O loader and should be set to 0

◆ external_relocation_offset() [2/2]

void LIEF::MachO::DynamicSymbolCommand::external_relocation_offset ( uint32_t value)
inline

◆ idx_external_define_symbol() [1/2]

uint32_t LIEF::MachO::DynamicSymbolCommand::idx_external_define_symbol ( ) const
inline

Index of the first symbol in the group of defined external symbols.

◆ idx_external_define_symbol() [2/2]

void LIEF::MachO::DynamicSymbolCommand::idx_external_define_symbol ( uint32_t value)
inline

◆ idx_local_symbol() [1/2]

uint32_t LIEF::MachO::DynamicSymbolCommand::idx_local_symbol ( ) const
inline

Index of the first symbol in the group of local symbols.

◆ idx_local_symbol() [2/2]

void LIEF::MachO::DynamicSymbolCommand::idx_local_symbol ( uint32_t value)
inline

◆ idx_undefined_symbol() [1/2]

uint32_t LIEF::MachO::DynamicSymbolCommand::idx_undefined_symbol ( ) const
inline

Index of the first symbol in the group of undefined external symbols.

◆ idx_undefined_symbol() [2/2]

void LIEF::MachO::DynamicSymbolCommand::idx_undefined_symbol ( uint32_t value)
inline

◆ indirect_symbol_offset() [1/2]

uint32_t LIEF::MachO::DynamicSymbolCommand::indirect_symbol_offset ( ) const
inline

Byte offset from the start of the file to the indirect symbol table data.

Indirect symbol table is used by the loader to speed-up symbol resolution during the lazy binding process

References:

  • dyld-519.2.1/src/ImageLoaderMachOCompressed.cpp
  • dyld-519.2.1/src/ImageLoaderMachOClassic.cpp

◆ indirect_symbol_offset() [2/2]

void LIEF::MachO::DynamicSymbolCommand::indirect_symbol_offset ( uint32_t value)
inline

◆ indirect_symbols() [1/2]

it_indirect_symbols LIEF::MachO::DynamicSymbolCommand::indirect_symbols ( )
inline

Iterator over the indirect symbols indexed by this command.

◆ indirect_symbols() [2/2]

it_const_indirect_symbols LIEF::MachO::DynamicSymbolCommand::indirect_symbols ( ) const
inline

◆ local_relocation_offset() [1/2]

uint32_t LIEF::MachO::DynamicSymbolCommand::local_relocation_offset ( ) const
inline

Byte offset from the start of the file to the local relocation table data.

This field seems unused by recent Mach-O loader and should be set to 0

◆ local_relocation_offset() [2/2]

void LIEF::MachO::DynamicSymbolCommand::local_relocation_offset ( uint32_t value)
inline

◆ module_table_offset() [1/2]

uint32_t LIEF::MachO::DynamicSymbolCommand::module_table_offset ( ) const
inline

Byte offset from the start of the file to the module table data.

This field seems unused by recent Mach-O loader and should be set to 0

◆ module_table_offset() [2/2]

void LIEF::MachO::DynamicSymbolCommand::module_table_offset ( uint32_t value)
inline

◆ nb_external_define_symbols() [1/2]

uint32_t LIEF::MachO::DynamicSymbolCommand::nb_external_define_symbols ( ) const
inline

Number of symbols in the group of defined external symbols.

◆ nb_external_define_symbols() [2/2]

void LIEF::MachO::DynamicSymbolCommand::nb_external_define_symbols ( uint32_t value)
inline

◆ nb_external_reference_symbols() [1/2]

uint32_t LIEF::MachO::DynamicSymbolCommand::nb_external_reference_symbols ( ) const
inline

Number of entries in the external reference table.

This field seems unused by recent Mach-O loader and should be set to 0

◆ nb_external_reference_symbols() [2/2]

void LIEF::MachO::DynamicSymbolCommand::nb_external_reference_symbols ( uint32_t value)
inline

◆ nb_external_relocations() [1/2]

uint32_t LIEF::MachO::DynamicSymbolCommand::nb_external_relocations ( ) const
inline

Number of entries in the external relocation table.

This field seems unused by recent Mach-O loader and should be set to 0

◆ nb_external_relocations() [2/2]

void LIEF::MachO::DynamicSymbolCommand::nb_external_relocations ( uint32_t value)
inline

◆ nb_indirect_symbols() [1/2]

uint32_t LIEF::MachO::DynamicSymbolCommand::nb_indirect_symbols ( ) const
inline

Number of entries in the indirect symbol table.

See also
indirect_symbol_offset

◆ nb_indirect_symbols() [2/2]

void LIEF::MachO::DynamicSymbolCommand::nb_indirect_symbols ( uint32_t value)
inline

◆ nb_local_relocations() [1/2]

uint32_t LIEF::MachO::DynamicSymbolCommand::nb_local_relocations ( ) const
inline

Number of entries in the local relocation table.

This field seems unused by recent Mach-O loader and should be set to 0

◆ nb_local_relocations() [2/2]

void LIEF::MachO::DynamicSymbolCommand::nb_local_relocations ( uint32_t value)
inline

◆ nb_local_symbols() [1/2]

uint32_t LIEF::MachO::DynamicSymbolCommand::nb_local_symbols ( ) const
inline

Number of symbols in the group of local symbols.

◆ nb_local_symbols() [2/2]

void LIEF::MachO::DynamicSymbolCommand::nb_local_symbols ( uint32_t value)
inline

◆ nb_module_table() [1/2]

uint32_t LIEF::MachO::DynamicSymbolCommand::nb_module_table ( ) const
inline

Number of entries in the module table.

This field seems unused by recent Mach-O loader and should be set to 0

◆ nb_module_table() [2/2]

void LIEF::MachO::DynamicSymbolCommand::nb_module_table ( uint32_t value)
inline

◆ nb_toc() [1/2]

uint32_t LIEF::MachO::DynamicSymbolCommand::nb_toc ( ) const
inline

Number of entries in the table of contents.

Should be set to 0 on recent Mach-O

◆ nb_toc() [2/2]

void LIEF::MachO::DynamicSymbolCommand::nb_toc ( uint32_t value)
inline

◆ nb_undefined_symbols() [1/2]

uint32_t LIEF::MachO::DynamicSymbolCommand::nb_undefined_symbols ( ) const
inline

Number of symbols in the group of undefined external symbols.

◆ nb_undefined_symbols() [2/2]

void LIEF::MachO::DynamicSymbolCommand::nb_undefined_symbols ( uint32_t value)
inline

◆ operator=()

DynamicSymbolCommand & LIEF::MachO::DynamicSymbolCommand::operator= ( const DynamicSymbolCommand & copy)
default

◆ print()

std::ostream & LIEF::MachO::DynamicSymbolCommand::print ( std::ostream & os) const
overridevirtual

Reimplemented from LIEF::MachO::LoadCommand.

◆ toc_offset() [1/2]

uint32_t LIEF::MachO::DynamicSymbolCommand::toc_offset ( ) const
inline

Byte offset from the start of the file to the table of contents data.

Table of content is used by legacy Mach-O loader and this field should be set to 0

◆ toc_offset() [2/2]

void LIEF::MachO::DynamicSymbolCommand::toc_offset ( uint32_t value)
inline
The documentation for this class was generated from the following file:
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