alexvoste
118 lines
2.5 KiB
C
118 lines
2.5 KiB
C
#ifndef ELF_H
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#define ELF_H
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#include <stdint.h>
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#include <stddef.h>
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#include <stdbool.h>
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#include "../memory/vmm.h"
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#include "../memory/paging.h"
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#define ELF_MAGIC 0x464C457F
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#define EI_CLASS 4
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#define EI_DATA 5
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#define EI_VERSION 6
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#define EI_OSABI 7
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#define EI_NIDENT 16
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#define ELFCLASS64 2
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#define ELFDATA2LSB 1
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#define EV_CURRENT 1
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#define ET_EXEC 2
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#define ET_DYN 3
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#define EM_X86_64 62
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#define PT_NULL 0
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#define PT_LOAD 1
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#define PT_DYNAMIC 2
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#define PT_INTERP 3
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#define PT_NOTE 4
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#define PT_PHDR 6
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#define PT_TLS 7
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#define PF_X (1 << 0)
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#define PF_W (1 << 1)
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#define PF_R (1 << 2)
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#define SHT_NULL 0
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#define SHT_PROGBITS 1
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#define SHT_SYMTAB 2
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#define SHT_STRTAB 3
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#define SHT_RELA 4
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#define SHT_NOBITS 8
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typedef struct {
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uint8_t e_ident[EI_NIDENT];
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uint16_t e_type;
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uint16_t e_machine;
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uint32_t e_version;
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uint64_t e_entry;
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uint64_t e_phoff;
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uint64_t e_shoff;
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uint32_t e_flags;
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uint16_t e_ehsize;
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uint16_t e_phentsize;
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uint16_t e_phnum;
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uint16_t e_shentsize;
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uint16_t e_shnum;
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uint16_t e_shstrndx;
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} __attribute__((packed)) elf64_ehdr_t;
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typedef struct {
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uint32_t p_type;
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uint32_t p_flags;
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uint64_t p_offset;
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uint64_t p_vaddr;
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uint64_t p_paddr;
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uint64_t p_filesz;
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uint64_t p_memsz;
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uint64_t p_align;
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} __attribute__((packed)) elf64_phdr_t;
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typedef struct {
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uint32_t sh_name;
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uint32_t sh_type;
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uint64_t sh_flags;
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uint64_t sh_addr;
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uint64_t sh_offset;
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uint64_t sh_size;
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uint32_t sh_link;
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uint32_t sh_info;
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uint64_t sh_addralign;
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uint64_t sh_entsize;
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} __attribute__((packed)) elf64_shdr_t;
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typedef enum {
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ELF_OK = 0,
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ELF_ERR_NULL,
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ELF_ERR_TOO_SMALL,
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ELF_ERR_BAD_MAGIC,
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ELF_ERR_NOT_64,
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ELF_ERR_NOT_LE,
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ELF_ERR_BAD_VERSION,
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ELF_ERR_NOT_EXEC,
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ELF_ERR_WRONG_ARCH,
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ELF_ERR_NO_LOAD,
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ELF_ERR_MAP_FAIL,
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ELF_ERR_NO_MEM,
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} elf_error_t;
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typedef struct {
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uintptr_t entry;
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vmm_pagemap_t* pagemap;
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uintptr_t load_base;
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uintptr_t stack_top;
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size_t stack_size;
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elf_error_t error;
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uintptr_t load_end;
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} elf_load_result_t;
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elf_load_result_t elf_load(const void* data, size_t size, size_t stack_sz);
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void elf_unload(elf_load_result_t* result);
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const char* elf_strerror(elf_error_t err);
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#endif |