blob: 79ec023e1e38cfeea70eda3e77a023d4642fe75f (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
#pragma once
#include <stddef.h>
#include <stdint.h>
#include <vfs.h>
#include <process.h>
/* elf_phdr_t :: p_type : program header entries types */
#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_LOPROC 0x70000000
#define PT_HIPROC 0x7fffffff
#define SHT_SYMTAB 2
#define SHT_STRTAB 3
/* elf_phdr_t :: p_flags : program header entries flags */
#define PF_X (1 << 0)
#define PF_W (1 << 1)
#define PF_R (1 << 2)
typedef struct {
uint8_t e_ident[16]; /* ELF identification */
uint16_t e_type; /* 2 (exec file) */
uint16_t e_machine; /* 3 (intel architecture) */
uint32_t e_version; /* 1 */
uint32_t e_entry; /* starting point */
uint32_t e_phoff; /* program header table offset */
uint32_t e_shoff; /* section header table offset */
uint32_t e_flags; /* various flags */
uint16_t e_ehsize; /* ELF header (this) size */
uint16_t e_phentsize; /* program header table entry size */
uint16_t e_phnum; /* number of entries */
uint16_t e_shentsize; /* section header table entry size */
uint16_t e_shnum; /* number of entries */
uint16_t e_shstrndx; /* index of the section name string table */
} elf_ehdr_t;
typedef struct {
uint32_t p_type; /* type of segment */
uint32_t p_offset;
uint32_t p_vaddr;
uint32_t p_paddr;
uint32_t p_filesz;
uint32_t p_memsz;
uint32_t p_flags;
uint32_t p_align;
} elf_phdr_t;
typedef struct elf_shdr {
uint32_t sh_name;
uint32_t sh_type;
uint32_t sh_flags;
uint32_t sh_addr;
uint32_t sh_offset;
uint32_t sh_size;
uint32_t sh_link;
uint32_t sh_info;
uint32_t sh_addralign;
uint32_t sh_entsize;
} elf_shdr_t;
typedef struct {
uint32_t st_name;
uint32_t st_value;
uint32_t st_size;
uint8_t st_info;
uint8_t st_other;
uint16_t st_shndx;
} elf_sym_t;
bool is_elf(fs_handle_t *f);
proc_entry_t elf_load(fs_handle_t *f, process_t *process); //Load an ELF to a process, return entry point
/* vim: set ts=4 sw=4 tw=0 noet :*/
|
