kernel/inc/drivers/builtin/elf/relocation.h

// This file is part of noxos and licensed under the MIT open source license

#ifndef NOXOS_RELOCATION_H
#define NOXOS_RELOCATION_H

#include <utils/stdtypes.h>
#include <drivers/builtin/elf/elf.h>

#define ELF_RELOCATION_SYMBOL(i)            ((i) >> 32)
#define ELF_RELOCATION_TYPE(i)              ((i) & 0xFFFFFFFFL)
#define ELF_RELOCATION_INFO(s,t)            (((s) << 32) + ((t) & 0xFFFFFFFFL))

#define ELF_RELOCATION_X86_64_PC32(s,a,p)   (s + a - p)
#define ELF_RELOCATION_X86_64_PLT32(l,a,p)  (l + a - p)

typedef enum {
    ELF_REL_NONE,
    ELF_REL_64,
    ELF_REL_PC32,
    ELF_REL_GOT32,
    ELF_REL_PLT32,
    ELF_REL_COPY,
    ELF_REL_GLOB_DAT,
    ELF_REL_JUMP_SLOT,
    ELF_REL_RELATIVE
} elf_relocation_type_E;

typedef struct {
    uint64_t    offset;
    uint64_t    info;
    int64_t     addend;
} elf_relocation_a_T;

//void elf_relocate       (elf_executable_T* executable, uint8_t* buffer, void* address);
bool elf_relocate_driver(elf_executable_T* executable, uint8_t* buffer, void* load_address);

#endif //NOXOS_RELOCATION_H