Linker::SymbolDefinition Class Reference

Represents a symbol definition. More...

#include <symbol_definition.h>

Public Types
enum	binding_type {   Undefined , Local , Global , Weak ,   Common , LocalCommon }

Public Member Functions
bool	operator== (const SymbolDefinition &other) const
bool	IsLocal () const
bool	IsCommon () const
bool	IsAllocated () const
bool	Displace (const Displacement &displacement)
	Recalculates the location after a section has moved.

Static Public Member Functions
static SymbolDefinition	CreateUndefined (std::string name, offset_t size=0, offset_t align=1)
static SymbolDefinition	CreateLocal (std::string name, Location location, offset_t size=0, offset_t align=1)
static SymbolDefinition	CreateGlobal (std::string name, Location location, offset_t size=0, offset_t align=1)
static SymbolDefinition	CreateWeak (std::string name, Location location, offset_t size=0, offset_t align=1)
static SymbolDefinition	CreateCommon (std::string name, std::string section, offset_t size=0, offset_t align=1)
static SymbolDefinition	CreateCommon (std::string name, std::string section, offset_t size, offset_t align, std::string alternative_section)
static SymbolDefinition	CreateCommon (std::string name, std::string section, std::string alternative_section)
static SymbolDefinition	CreateLocalCommon (std::string name, std::string section, offset_t size=0, offset_t align=1)
static SymbolDefinition	CreateLocalCommon (std::string name, std::string section, offset_t size, offset_t align, std::string alternative_section)
static SymbolDefinition	CreateLocalCommon (std::string name, std::string section, std::string alternative_section)

Public Attributes
std::string	name
binding_type	binding = Undefined
Location	location
offset_t	size = 0
offset_t	align = 1
std::string	section_name
std::string	alternative_section_name

Protected Member Functions
	SymbolDefinition (std::string name, binding_type binding, Location location, offset_t size, offset_t align, std::string section_name="", std::string alternative_section_name="")

Detailed Description

Represents a symbol definition.

Member Enumeration Documentation

binding_type

enum Linker::SymbolDefinition::binding_type

Enumerator
Undefined	An undefined variable that needs to appear in another module for the linking process to succeed.
Local	A variable that is only visible in the current module.
Global	A variable that is visible in all modules and must appear once.
Weak	A variable that is visible in all modules, however takes lower precedence than a Global variable.
Common	A currently unallocated variable that should be allocated in the final stages of the linking process.
LocalCommon	A currently unallocated local variable that should be allocated in the final stages of the linking process.

Member Function Documentation

Displace()

bool SymbolDefinition::Displace

(

const Displacement &

displacement

)

Recalculates the location after a section has moved.

Note that only local, global and weak symbol definitions have a location

Parameters

displacement

A map from sections to locations, specifying the new starting place of the section. This can also indicate when a section has been appended to another one, and the location will be updated to reference the new section.

Returns

True if location changed due to displacement.

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The documentation for this class was generated from the following files:

• src/linker/symbol_definition.h
• src/linker/symbol_definition.cc