libkernaux/include/kernaux/elf.h

#ifndef KERNAUX_INCLUDED_ELF
#define KERNAUX_INCLUDED_ELF 1

#ifdef __cplusplus
extern "C" {
#endif

#include <stdbool.h>

struct KernAux_ELF_Header {
    unsigned char  magic_0x7F     : 8;
    unsigned char  magic_E        : 8;
    unsigned char  magic_L        : 8;
    unsigned char  magic_F        : 8;
    unsigned char  bitness        : 8;
    unsigned char  endianness     : 8;
    unsigned char  header_version : 8;
    unsigned char  os_abi         : 8;
    unsigned long  unused1        : 32;
    unsigned long  unused2        : 32;
    unsigned short obj_type       : 16;
    unsigned short isa            : 16;
    unsigned long  elf_version    : 32;
    unsigned long  entrypoint     : 32;
    unsigned long  prog_table_pos : 32;
    unsigned long  sect_table_pos : 32;
    unsigned long  arch_flags     : 32;
    unsigned short header_size    : 16;
    unsigned short prog_entr_size : 16;
    unsigned short prog_entr_num  : 16;
    unsigned short sect_entr_size : 16;
    unsigned short sect_entr_num  : 16;
    unsigned short sect_names_idx : 16;
}
__attribute__((packed));

struct KernAux_ELF_ProgramEntry {
    unsigned long type       : 32;
    unsigned long offset     : 32;
    unsigned long virt_addr  : 32;
    unsigned long phys_addr  : 32;
    unsigned long file_size  : 32;
    unsigned long mem_size   : 32;
    unsigned long flags      : 32;
    unsigned long align      : 32;
}
__attribute__((packed));

struct KernAux_ELF_SectionEntry {
    unsigned long name        : 32;
    unsigned long type        : 32;
    unsigned long flags       : 32;
    unsigned long vaddr       : 32;
    unsigned long file_offset : 32;
    unsigned long file_size   : 32;
    unsigned long link        : 32;
    unsigned long info        : 32;
    unsigned long alignment   : 32;
    unsigned long ent_size    : 32;
}
__attribute__((packed));

struct KernAux_ELF_RelocationEntry {
    unsigned long virt_addr : 32;
    unsigned long info      : 32;
}
__attribute__((packed));

typedef struct KernAux_ELF_ProgramEntry KernAux_ELF_ProgramTable[];

typedef struct KernAux_ELF_SectionEntry KernAux_ELF_SectionTable[];

typedef struct KernAux_ELF_RelocationEntry KernAux_ELF_RelocationTable[];

bool KernAux_ELF_Header_is_valid(const struct KernAux_ELF_Header *header);

#ifdef __cplusplus
}
#endif

#endif