PharLap::P3Format Class Reference

Phar Lap "P2"/"P3" .exp file. More...

#include <pharlap.h>

Inheritance diagram for PharLap::P3Format:

Classes
class	Flat
class	MultiSegmented
class	RunTimeParameterBlock

Public Member Functions
void	ReadFile (Linker::Reader &rd) override
	Loads file into memory.
bool	FormatSupportsSegmentation () const override
	Whether the format supports multiple segments.
	P3Format (bool is_multisegmented, bool is_32bit=true)
void	SetOptions (std::map< std::string, std::string > &options) override
	Passes command line parameters as settings over to format object.
std::string	GetDefaultExtension (Linker::Module &module, std::string filename) const override
	Appends a default extension to the filename.
offset_t	WriteFile (Linker::Writer &wr) const override
	Stores data in memory to file.
void	Dump (Dumper::Dumper &dump) const override
	Display file contents in a nice manner.
Public Member Functions inherited from Linker::SegmentManager
void	ClearSegmentManager ()
void	SetLinkScript (std::string script_file, std::map< std::string, std::string > &options) override
	Sets up the linker script and linker parameters.
std::unique_ptr< Script::List >	GetScript (Module &module)
	Compiles the linker script into an internal format.
offset_t	GetCurrentAddress () const
	Retrieves current address pointer.
void	SetCurrentAddress (offset_t address)
	Moves the current address pointer further, and if the current segment already contains data, fill it up to the point.
void	AlignCurrentAddress (offset_t align)
	Aligns current address to alignment, using SetCurrentAddress.
void	SetLatestBase (offset_t address)
	Sets the base of the current section (the value from which offsets are counted from)
void	FinishCurrentSegment ()
	Closes the current segment, sets current_segment to null.
virtual void	OnNewSegment (std::shared_ptr< Segment > segment)
	Callback function when allocating a new segment When the linker script runs, it creates segments consecutively. Overriding this method permits the output format to handle the allocated segment.
std::shared_ptr< Segment >	AppendSegment (std::string name)
	Terminates the current segment (if there is one), creates a new segment and attaches it to the image.
std::shared_ptr< Segment >	FetchSegment (std::string name)
	Attempts to fetch a segment, returns null if not found.
void	AppendSection (std::shared_ptr< Section > section)
	Adds a new section to the current segment, sets the base to the same as the segment.
void	ProcessScript (std::unique_ptr< Script::List > &directives, Module &module)
	Executes a parsed linker script on a module and collects segments The function OnNewSegment can be defined to handle each newly allocated segment.
void	ProcessAction (std::unique_ptr< Script::Node > &action, Module &module)
void	PostProcessAction (std::unique_ptr< Script::Node > &action, Module &module)
void	ProcessCommand (std::unique_ptr< Script::Node > &command, Module &module)
bool	CheckPredicate (std::unique_ptr< Script::Node > &predicate, std::shared_ptr< Section > section, Module &module)
offset_t	EvaluateExpression (std::unique_ptr< Script::Node > &expression, Module &module)
Public Member Functions inherited from Linker::OutputFormat
virtual bool	AddSupplementaryOutputFormat (std::string subformat)
	If the output format actually drives multiple output formats (resource file, apple double, etc.), specify multiple types, return false if unknown.
std::optional< std::string >	FetchOption (std::map< std::string, std::string > &options, std::string name)
	Convenience method to look up option by name.
std::string	FetchOption (std::map< std::string, std::string > &options, std::string name, std::string default_value)
	Convenience method to look up option by name, returning default value if name is missing.
std::optional< offset_t >	FetchIntegerOption (std::map< std::string, std::string > &options, std::string name)
	Convenience method to look up option by name and convert it to integer.
virtual void	SetModel (std::string model)
	Sets the way memory is organized, typically modifying a built-in script.
virtual void	ProcessModule (Module &object)
	Processes the module object and initializes format fields.
virtual void	CalculateValues ()
	Intermediate step between processing module and generating output file to set up headers and management sections It is expected that after a module is processed, additional steps are required to evaluate the final values of the fields.
virtual void	GenerateFile (std::string filename, Module &module)
	The main function that handles processing, calculating and generating the final image.
virtual std::string	GetDefaultExtension (Module &module) const
	Provides a default filename for the output file.
virtual bool	FormatIs16bit () const
	Whether the format is 16-bit or not.
virtual bool	FormatIsLinear () const
	Whether the address space is linear or segmented.
virtual bool	FormatSupportsResources () const
	Whether the format supports resources.
virtual bool	FormatSupportsLibraries () const
	Whether the format supports libraries.
virtual unsigned	FormatAdditionalSectionFlags (std::string section_name) const
Public Member Functions inherited from Linker::Format
	Format (offset_t file_offset=0)
virtual void	Clear ()
	Resets all fields to their default values, deallocate memory.
offset_t	ImageSize () const override
	Retrieves size of stored data.
offset_t	WriteFile (Writer &wr, offset_t count, offset_t offset=0) const override
	Writes data of non-zero filled sections.
Public Member Functions inherited from Linker::Image
virtual std::shared_ptr< const ActualImage >	AsImage () const
	Retrieves a randomly accessible image.
std::shared_ptr< ActualImage >	AsImage ()
	Retrieves a randomly accessible image.

Public Attributes
const bool	is_multisegmented
bool	is_32bit
uint16_t	header_size = 0
uint32_t	file_size = 0
uint32_t	runtime_parameters_offset = 0
uint32_t	runtime_parameters_size = 0
uint32_t	relocation_table_offset = 0
uint32_t	relocation_table_size = 0
uint32_t	segment_information_table_offset = 0
uint32_t	segment_information_table_size = 0
uint16_t	segment_information_table_entry_size = 0
uint32_t	load_image_offset = 0
uint32_t	load_image_size = 0
uint32_t	symbol_table_offset = 0
uint32_t	symbol_table_size = 0
uint32_t	gdt_address = 0
uint32_t	gdt_size = 0
uint32_t	ldt_address = 0
uint32_t	ldt_size = 0
uint32_t	idt_address = 0
uint32_t	idt_size = 0
uint32_t	tss_address = 0
uint32_t	tss_size = 0
uint32_t	minimum_extra = 0
uint32_t	maximum_extra = 0
uint32_t	base_load_offset = 0
uint32_t	esp = 0
uint16_t	ss = 0
uint32_t	eip = 0
uint16_t	cs = 0
uint16_t	ldtr = 0
uint16_t	tr = 0
uint16_t	flags = 0
uint32_t	memory_requirements = 0
uint32_t	stack_size = 0
Microsoft::MZStubWriter	stub
RunTimeParameterBlock	runtime_parameters
Public Attributes inherited from Linker::SegmentManager
offset_t	current_base = 0
	The base address of the current section.
std::vector< std::shared_ptr< Segment > >	segment_vector
	Ordered sequence of segments.
std::map< std::string, std::shared_ptr< Segment > >	segment_map
	Map of segments from their names.
std::shared_ptr< Segment >	current_segment
	Currently processed segment.
std::map< std::string, Location >	linker_parameters
	Parameters that permit customizing the linker script.
std::string	linker_script
	Contents of the linker script.
Public Attributes inherited from Linker::Format
offset_t	file_offset

Additional Inherited Members
Protected Attributes inherited from Linker::SegmentManager
offset_t	current_address = 0
	Holds the current address value when there is no current_segment.
bool	current_is_template = false
bool	current_is_template_head = false
offset_t	template_counter = 0
std::string	current_template_name

Detailed Description

Phar Lap "P2"/"P3" .exp file.

Member Function Documentation

Dump()

void P3Format::Dump ( Dumper::Dumper & dump ) const

overridevirtual

Display file contents in a nice manner.

Reimplemented from Linker::Format.

FormatSupportsSegmentation()

bool P3Format::FormatSupportsSegmentation ( ) const

overridevirtual

Whether the format supports multiple segments.

This is typically true for Intel 8086 targets and false for non-Intel targets. The ELF parser uses this to provide extended relocations, including the following:

• $$SEG$<section name>
• $$SEGOF$<symbol name>
• $$SEGAT$<symbol name>
• $$WRTSEG$<symbol name>$<section name>
• $$SEGDIF$<section name>$<section name>

Reimplemented from Linker::OutputFormat.

GetDefaultExtension()

std::string P3Format::GetDefaultExtension ( Linker::Module & module, std::string filename ) const

overridevirtual

Appends a default extension to the filename.

A typical behavior would be to append .exe at the end of the filename. The default action is to leave it intact.

Reimplemented from Linker::OutputFormat.

ReadFile()

void P3Format::ReadFile ( Linker::Reader & rd )

overridevirtual

Loads file into memory.

Implements Linker::Format.

SetOptions()

void P3Format::SetOptions ( std::map< std::string, std::string > & options )

overridevirtual

Passes command line parameters as settings over to format object.

Reimplemented from Linker::OutputFormat.

WriteFile()

offset_t P3Format::WriteFile ( Linker::Writer & wr ) const

overridevirtual

Stores data in memory to file.

Implements Linker::Format.

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

• src/format/pharlap.h
• src/format/pharlap.cc