Function for multiboot support. More...

Macros
#define	__DEBUG_HEADER__ "[ELF ]"
	Change header.

#define	__DEBUG_LEVEL__ LOGLEVEL_NOTICE
	Set log level.

Functions
static elf_section_header_t *	elf_get_section_header_table (elf_header_t *header)
	Returns the pointer to where the section headers reside. More...

static elf_program_header_t *	elf_get_program_header_table (elf_header_t *header)
	Returns the pointer to where the program headers reside. More...

static elf_section_header_t *	elf_get_section_header (elf_header_t *header, unsigned idx)
	Returns a pointer to the desired section header. More...

static elf_program_header_t *	elf_get_program_header (elf_header_t *header, unsigned idx)
	Returns a pointer to the desired program header. More...

static const char *	elf_get_section_header_string_table (elf_header_t *header)
	Returns a pointer to the section header string table. More...

static const char *	elf_get_symbol_string_table (elf_header_t header, elf_section_header_t section_header)
	Returns a pointer to the section header symbol table. More...

static const char *	elf_get_section_header_name (elf_header_t header, elf_section_header_t section_header)
	Returns the name of the given section header. More...

static const char *	elf_get_symbol_name (elf_header_t header, elf_section_header_t section_header, elf_symbol_t *symbol)
	Returns a pointer to the section header string table. More...

static elf_section_header_t *	elf_find_section_header (elf_header_t header, const char name)
	Finds the section header with the given name. More...

static elf_symbol_t *	elf_find_symbol (elf_header_t header, const char name)
	Finds the symbol with the given name. More...

static void	elf_dump_section_headers (elf_header_t *header)
	Dumps the information about the sections. More...

static void	elf_dump_symbol_table (elf_header_t *header)
	Dumps the information about the symbols. More...

static int	elf_load_exec (elf_header_t header, task_struct task)
	Loads an ELF executable. More...

int	elf_load_file (task_struct task, vfs_file_t file, uint32_t *entry)
	Loads an ELF file into the memory of task. More...

int	elf_check_file_type (vfs_file_t *file, Elf_Type type)
	Checks if the file is a valid ELF. More...

int	elf_check_file_header (elf_header_t *header)
	Checks the correctness of the ELF header. More...

int	elf_check_magic_number (elf_header_t *header)
	Checks the correctness of the ELF header magic number. More...

const char *	elf_type_to_string (int type)
	Transforms the passed ELF type to string. More...

const char *	elf_section_header_type_to_string (int type)
	Transforms the passed ELF section header type to string. More...

const char *	elf_symbol_type_to_string (int type)
	Transforms the passed ELF symbol type to string. More...

const char *	elf_symbol_bind_to_string (int bind)
	Transforms the passed ELF symbol bind to string. More...

Detailed Description

Function for multiboot support.

Copyright: (c) 2014-2024 This file is distributed under the MIT License. See LICENSE.md for details.

Function Documentation

◆ elf_check_file_header()

int elf_check_file_header ( elf_header_t * hdr )

Checks the correctness of the ELF header.

Parameters

hdr	The header to check.

Returns: 0 if fails, 1 if succeed.

◆ elf_check_file_type()

int elf_check_file_type	(	vfs_file_t *	file,
		Elf_Type	type
	)

Checks if the file is a valid ELF.

Parameters

file	The file to check.
type	The type of ELF file we expect.

Returns: 0 if fails, 1 if succeed.

◆ elf_check_magic_number()

int elf_check_magic_number ( elf_header_t * hdr )

Checks the correctness of the ELF header magic number.

Parameters

hdr	The header to check.

Returns: 0 if fails, 1 if succeed.

◆ elf_dump_section_headers()

static void elf_dump_section_headers ( elf_header_t * header )

inlinestatic

Dumps the information about the sections.

Parameters

header a pointer to the ELF header.

◆ elf_dump_symbol_table()

static void elf_dump_symbol_table ( elf_header_t * header )

inlinestatic

Dumps the information about the symbols.

Parameters

header a pointer to the ELF header.

◆ elf_find_section_header()

static elf_section_header_t* elf_find_section_header	(	elf_header_t *	header,
		const char *	name
	)

inlinestatic

Finds the section header with the given name.

Parameters

header	a pointer to the ELF header.
name	the name of the section we are looking for.

Returns: a pointer to the section header.

◆ elf_find_symbol()

static elf_symbol_t* elf_find_symbol	(	elf_header_t *	header,
		const char *	name
	)

inlinestatic

Finds the symbol with the given name.

Parameters

header	a pointer to the ELF header.
name	the name of the symbol we are looking for.

Returns: a pointer to the symbol.

◆ elf_get_program_header()

static elf_program_header_t* elf_get_program_header	(	elf_header_t *	header,
		unsigned	idx
	)

inlinestatic

Returns a pointer to the desired program header.

Parameters

header	a pointer to the ELF header.
idx	the index of the program header.

Returns: a pointer to the desired section header.

◆ elf_get_program_header_table()

static elf_program_header_t* elf_get_program_header_table ( elf_header_t * header )

inlinestatic

Returns the pointer to where the program headers reside.

Parameters

header a pointer to the ELF header.

Returns: a pointer to the program headers table.

◆ elf_get_section_header()

static elf_section_header_t* elf_get_section_header	(	elf_header_t *	header,
		unsigned	idx
	)

inlinestatic

Returns a pointer to the desired section header.

Parameters

header	a pointer to the ELF header.
idx	The index of the section header.

Returns: a pointer to the desired section header.

◆ elf_get_section_header_name()

static const char* elf_get_section_header_name	(	elf_header_t *	header,
		elf_section_header_t *	section_header
	)

inlinestatic

Returns the name of the given section header.

Parameters

header	a pointer to the ELF header.
section_header	a pointer to the section header.

Returns: a pointer to the name, or NULL on failure.

◆ elf_get_section_header_string_table()

static const char* elf_get_section_header_string_table ( elf_header_t * header )

inlinestatic

Returns a pointer to the section header string table.

Parameters

header a pointer to the ELF header.

Returns: a pointer to the section header string table, or NULL on failure.

◆ elf_get_section_header_table()

static elf_section_header_t* elf_get_section_header_table ( elf_header_t * header )

inlinestatic

Returns the pointer to where the section headers reside.

Parameters

header a pointer to the ELF header.

Returns: a pointer to the section headers table.

◆ elf_get_symbol_name()

static const char* elf_get_symbol_name	(	elf_header_t *	header,
		elf_section_header_t *	section_header,
		elf_symbol_t *	symbol
	)

inlinestatic

Returns a pointer to the section header string table.

Parameters

header	a pointer to the ELF header.
section_header	a pointer to the section header.
symbol	a pointer to the symbol we want to get the name for.

Returns: a pointer to the section header string table, or NULL on failure.

◆ elf_get_symbol_string_table()

static const char* elf_get_symbol_string_table	(	elf_header_t *	header,
		elf_section_header_t *	section_header
	)

inlinestatic

Returns a pointer to the section header symbol table.

Parameters

header	a pointer to the ELF header.
section_header	a pointer to the ELF section header.

Returns: a pointer to the section header symbol table, or NULL on failure.

◆ elf_load_exec()

static int elf_load_exec	(	elf_header_t *	header,
		task_struct *	task
	)

inlinestatic

Loads an ELF executable.

Parameters

header	The header of the ELF file.
task	The task for which we load the ELF.

Returns: The ELF entry.

◆ elf_load_file()

int elf_load_file	(	task_struct *	task,
		vfs_file_t *	file,
		uint32_t *	entry
	)

Loads an ELF file into the memory of task.

Parameters

task	The task for which we load the ELF.
file	The ELF file.
entry	The ELF binary entry.

Returns: 0 if fails, 1 if succeed.

◆ elf_section_header_type_to_string()

const char* elf_section_header_type_to_string ( int type )

Transforms the passed ELF section header type to string.

Parameters

type	The integer representing the ELF section header type.

Returns: The string representing the ELF section header type.

◆ elf_symbol_bind_to_string()

const char* elf_symbol_bind_to_string ( int bind )

Transforms the passed ELF symbol bind to string.

Parameters

bind	The integer representing the ELF symbol bind.

Returns: The string representing the ELF symbol bind.

◆ elf_symbol_type_to_string()

const char* elf_symbol_type_to_string ( int type )

Transforms the passed ELF symbol type to string.

Parameters

type	The integer representing the ELF symbol type.

Returns: The string representing the ELF symbol type.

◆ elf_type_to_string()

const char* elf_type_to_string ( int type )

Transforms the passed ELF type to string.

Parameters

type	The integer representing the ELF type.

Returns: The string representing the ELF type.

Macros

Functions

Detailed Description

Function Documentation

◆ elf_check_file_header()

◆ elf_check_file_type()

◆ elf_check_magic_number()

◆ elf_dump_section_headers()

◆ elf_dump_symbol_table()

◆ elf_find_section_header()

◆ elf_find_symbol()

◆ elf_get_program_header()

◆ elf_get_program_header_table()

◆ elf_get_section_header()

◆ elf_get_section_header_name()

◆ elf_get_section_header_string_table()

◆ elf_get_section_header_table()

◆ elf_get_symbol_name()

◆ elf_get_symbol_string_table()

◆ elf_load_exec()

◆ elf_load_file()

◆ elf_section_header_type_to_string()

◆ elf_symbol_bind_to_string()

◆ elf_symbol_type_to_string()

◆ elf_type_to_string()