---

elf32.h File Reference

ELF32 file format header. More...

Go to the source code of this file.

Data Structures
struct	elf32_hdr
	32-bit ELF header. More...
struct	elf32_shdr
	ELF32 Section header. More...
Defines
#define	EI_NIDENT   16
	Size of e_ident[].
#define	EI_MAG0   0
	File magic number (0).
#define	EI_MAG1   1
	File magic number (1).
#define	EI_MAG2   2
	File magic number (2).
#define	EI_MAG3   3
	File magic number (3).
#define	EI_CLASS   4
	File class.
#define	EI_DATA   5
	Data encoding.
#define	EI_VERSION   6
	File version.
#define	EI_PAD   7
	Start of padding bytes.
#define	ELF_MAG0   0x7F
	< ELF magic number.
#define	ELF_MAG1   'E'
	< ELF magic number[0].
#define	ELF_MAG2   'L'
	ELF magic number[1].
#define	ELF_MAG3   'F'
	ELF magic number[2].
#define	ELF_CLASSNONE   0
	Invalid class.
#define	ELF_CLASS32   1
	32-bit objects.
#define	ELF_CLASS64   2
	64-bit objects.
#define	ELF_DATANONE   0
	Invalid data encoding.
#define	ELF_DATA2LSB   1
	Least significant byte encoding.
#define	ELF_DATA2MSB   2
	Most significant byte encoding.
#define	SHT_NULL   0
	The section is inactive.
#define	SHT_PROGBITS   1
	The section holds informations defined by the program, whose format and meaning are determined solely by the program.
#define	SHT_SYMTAB   2
	The section holds a symbol table.
#define	SHT_STRTAB   3
	The section holds a string table.
#define	SHT_RELA   4
	The section holds relocation entries.
#define	SHT_HASH   5
	The section holds a symbol hash table.
#define	SHT_DYNAMIC   6
	The section holds informations for dynamic linking.
#define	SHT_NOTE   7
	The section holds informations that marks the file in some way.
#define	SHT_NOBITS   8
	A section of this type occupies no space in the file but otherwise resembles SHT_PROGBITS. Although this section contains no bytes, the sh_offset member contains the conceptual file offset. For example the ".bss" section can be considered a section of this type.
#define	SHT_REL   9
	The section holds a relocation entries without explicit addends.
#define	SHT_SHLIB   10
	This section type is reserved, but has unspecified semantics.
#define	SHT_DYNSYM   11
	This section contains a set of dynamic linking symbols.
#define	SHT_LOPROC   0x700000000
	Values in this exclusive range are reserved for processor-specific semantics.
#define	SHT_HIPROC   0x700000000
	Values in this exclusive range are reserved for processor-specific semantics.
#define	SHT_LOUSER   0x700000000
	This value specifies the lower bound of the range of indexes reserved for application programs.
#define	SHT_HIUSER   0x700000000
	This value specifies the upper bound of the range of indexes reserved for application programs.
#define	SHF_WRITE   0x1
	Data should be writable during the process execution.
#define	SHF_ALLOC   0x2
	The section occupies memory during the process execution.
#define	SHF_EXECINSTR   0x4
	The section contains executable machine instructions.
#define	SHF_MASKPROC   0xF00000000
	All bits included in this mask are reserved for processor-specific semantics.
Typedefs
typedef uint32_t	Elf32_Addr
typedef uint16_t	Elf32_Half
typedef uint32_t	Elf32_Off
typedef int32_t	Elf32_Sword
typedef uint32_t	Elf32_Word
typedef elf32_hdr	elf32_hdr_t
	32-bit ELF header.
typedef elf32_shdr	elf32_shdr_t
	ELF32 Section header.
Functions
uint32_t	elf32_copy_sections (elf32_hdr_t *f)
	Copy the ELF32 sections at the right locations in memory. Parameters: f  The buffer where the ELF32 file is located. Returns: the entry point address on success; NULL if an error occurs.
int	elf32_load_file (char *file_name, void *file_buffer)
	Load an ELF32 file into a buffer. Parameters: file_name  The name of the file to be loaded. file_buffer  The buffer where the file will be loaded. Returns: 0 on success; -ENOENT if the file doesn't exist; -ENOEXEC if the file is not a valid ELF32 file.
int	elf32_exec (void *f, int argc, char **argv)
	Execute a file.

---

Detailed Description

ELF32 file format header.

Author:

Andrea Righi <drizzt@inwind.it>

Date:

Last update: 2003-10-01

Note:

Copyright (©) 2003 Andrea Righi

Definition in file elf32.h.

---