/*********************************************************************************/
/* Module Name:  elf.h                                                           */
/* Project:      AurixOS                                                         */
/*                                                                               */
/* Copyright (c) 2024-2025 Jozef Nagy                                            */
/*                                                                               */
/* This source is subject to the MIT License.                                    */
/* See License.txt in the root of this repository.                               */
/* All other rights reserved.                                                    */
/*                                                                               */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR    */
/* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,      */
/* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE   */
/* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER        */
/* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, */
/* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */
/* SOFTWARE.                                                                     */
/*********************************************************************************/

#ifndef _LOADER_ELF_H
#define _LOADER_ELF_H

#include <mm/vmm.h>
#include <stdint.h>
//#include <stddef.h>

#define ELF_MAGIC 0x464C457F

struct elf_header {
    uint32_t e_magic;
    uint8_t e_class;
    uint8_t e_data;
    uint8_t e_version;
    uint8_t e_osabi;
    uint8_t e_abiversion;
    uint8_t e_pad[7];
    uint16_t e_type;
    uint16_t e_machine;
    uint32_t e_version2;
    uint64_t e_entry;
    uint64_t e_phoff;
    uint64_t e_shoff;
    uint32_t e_flags;
    uint16_t e_ehsize;
    uint16_t e_phentsize;
    uint16_t e_phnum;
    uint16_t e_shentsize;
    uint16_t e_shnum;
    uint16_t e_shstrndx;
} __attribute__((packed));

struct elf_program_header {
    uint32_t p_type;
    uint32_t p_flags;
    uint64_t p_offset;
    uint64_t p_vaddr;
    uint64_t p_paddr;
    uint64_t p_filesz;
    uint64_t p_memsz;
    uint64_t p_align;
} __attribute__((packed));

#define PT_NULL 0
#define PT_LOAD 1
#define PT_DYNAMIC 2
#define PT_INTERP 3
#define PT_NOTE 4
#define PT_SHLIB 5
#define PT_PHDR 6
#define PT_TLS 7

#define PF_X 0x1
#define PF_W 0x2
#define PF_R 0x4

uintptr_t elf_load(char *kernel, uintptr_t *addr, pagetable *pagemap);

#endif /* _LOADER_ELF_H */