2017-03-13 04:27:56 +08:00

152 lines
3.7 KiB
C

#ifndef _ELF_H_
#define _ELF_H_
#include <stdint.h>
/*
** ELF structure
**
** +-----------------+
** | ELF magic | | 4 bytes
** +------------ +
** | ELF class | | 1 byte
** +------------ +
** | ELF header |
** +-----------------+
** ~
** +-----------------+
** | program header | kernel info
** +-----------------+
** | program header | ramdisk info
** +-----------------+
** | program header | dtb info
** +-----------------+
** | program header | (possible) cmdline info
** +-----------------+
** ~
** +-----------------+
** | section header | cmdline info
** +-----------------+
** ~
** +-----------------+
** | |
** | Data |
** | |
** +-----------------+
*/
typedef uint32_t elf32_addr;
typedef uint16_t elf32_half;
typedef uint32_t elf32_off;
typedef uint32_t elf32_word;
typedef uint64_t elf64_addr;
typedef uint16_t elf64_half;
typedef uint64_t elf64_off;
typedef uint32_t elf64_word;
typedef uint64_t elf64_xword;
#define ELF_MAGIC "\x7f""ELF"
#define ELF_MAGIC_SIZE 4
#define EI_CLASS 4
#define EI_DATA 5
#define EI_VERSION 6
#define EI_OSABI 7
#define EI_PAD 8
#define ELFCLASSNONE 0
#define ELFCLASS32 1
#define ELFCLASS64 2
#define ELFCLASSNUM 3
#define ET_EXEC 2
#define EM_ARM 40
#define EI_NIDENT 16
typedef struct elf32_ehdr {
unsigned char e_ident[EI_NIDENT];
elf32_half e_type;
elf32_half e_machine;
elf32_word e_version;
elf32_addr e_entry; /* Entry point */
elf32_off e_phoff;
elf32_off e_shoff;
elf32_word e_flags;
elf32_half e_ehsize;
elf32_half e_phentsize;
elf32_half e_phnum;
elf32_half e_shentsize;
elf32_half e_shnum;
elf32_half e_shstrndx;
} elf32_ehdr;
typedef struct elf64_ehdr {
unsigned char e_ident[EI_NIDENT]; /* ELF "magic number" */
elf64_half e_type;
elf64_half e_machine;
elf64_word e_version;
elf64_addr e_entry; /* Entry point virtual address */
elf64_off e_phoff; /* Program header table file offset */
elf64_off e_shoff; /* Section header table file offset */
elf64_word e_flags;
elf64_half e_ehsize;
elf64_half e_phentsize;
elf64_half e_phnum;
elf64_half e_shentsize;
elf64_half e_shnum;
elf64_half e_shstrndx;
} elf64_ehdr;
typedef struct elf32_phdr {
elf32_word p_type;
elf32_off p_offset;
elf32_addr p_vaddr;
elf32_addr p_paddr;
elf32_word p_filesz;
elf32_word p_memsz;
elf32_word p_flags;
elf32_word p_align;
} elf32_phdr;
typedef struct elf64_phdr {
elf64_word p_type;
elf64_word p_flags;
elf64_off p_offset; /* Segment file offset */
elf64_addr p_vaddr; /* Segment virtual address */
elf64_addr p_paddr; /* Segment physical address */
elf64_xword p_filesz; /* Segment size in file */
elf64_xword p_memsz; /* Segment size in memory */
elf64_xword p_align; /* Segment alignment, file & memory */
} elf64_phdr;
typedef struct elf32_shdr {
elf32_word s_name;
elf32_word s_type;
elf32_word s_flags;
elf32_addr s_addr;
elf32_off s_offset;
elf32_word s_size;
elf32_word s_link;
elf32_word s_info;
elf32_word s_addralign;
elf32_word s_entsize;
} elf32_shdr;
typedef struct elf64_shdr {
elf64_word s_name; /* Section name, index in string tbl */
elf64_word s_type; /* Type of section */
elf64_xword s_flags; /* Miscellaneous section attributes */
elf64_addr s_addr; /* Section virtual addr at execution */
elf64_off s_offset; /* Section file offset */
elf64_xword s_size; /* Size of section in bytes */
elf64_word s_link; /* Index of another section */
elf64_word s_info; /* Additional section information */
elf64_xword s_addralign; /* Section alignment */
elf64_xword s_entsize; /* Entry size if section holds table */
} elf64_shdr;
#endif