/
elf_dprefix.S
94 lines (82 loc) · 1.76 KB
/
elf_dprefix.S
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
85
86
87
88
89
90
91
92
93
94
#include "elf.h"
.arch i386
.section ".prefix", "a", @progbits
#define LOAD_ADDR 0x10000
/* ELF Header */
.globl elf_header
elf_header:
e_ident: .byte 0x7f, 'E', 'L', 'F', 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0
e_type: .short ET_DYN
e_machine: .short EM_386
e_version: .long 1
e_entry: .long LOAD_ADDR + _start - elf_header
e_phoff: .long elf_program_header - elf_header
e_shoff: .long 0
e_flags: .long 0
e_ehsize: .short elf_header_end - elf_header
e_phentsize: .short ELF32_PHDR_SIZE
e_phnum: .short (elf_program_header_end - elf_program_header)/ELF32_PHDR_SIZE
e_shentsize: .short 0
e_shnum: .short 0
e_shstrndx: .short 0
elf_header_end:
elf_program_header:
phdr1_p_type: .long PT_NOTE
phdr1_p_offset: .long elf_note - elf_header
phdr1_p_vaddr: .long elf_note
phdr1_p_paddr: .long elf_note
phdr1_p_filesz: .long elf_note_end - elf_note
phdr1_p_memsz: .long elf_note_end - elf_note
phdr1_p_flags: .long PF_R | PF_W | PF_X
phdr1_p_align: .long 0
/* The decompressor */
phdr2_p_type: .long PT_LOAD
phdr2_p_offset: .long 0
phdr2_p_vaddr: .long elf_header
phdr2_p_paddr: .long LOAD_ADDR
phdr2_p_filesz: .long _verbatim_size
phdr2_p_memsz: .long _image_size
phdr2_p_flags: .long PF_R | PF_W | PF_X
phdr2_p_align: .long 16
elf_program_header_end:
.globl elf_note
elf_note:
.balign 4
.int 2f - 1f
.int 4f - 3f
.int EIN_PROGRAM_NAME
1: .asciz "ELFBoot"
2:
.balign 4
3:
.asciz "Etherboot"
4:
.balign 4
.int 2f - 1f
.int 4f - 3f
.int EIN_PROGRAM_VERSION
1: .asciz "ELFBoot"
2:
.balign 4
3:
.asciz VERSION
4:
#if 0
.balign 4
.int 2f - 1f
.int 4f - 3f
.int EIN_PROGRAM_CHECKSUM
1: .asciz "ELFBoot"
2:
.balign 4
3:
.word 0
4:
#endif
.balign 4
elf_note_end:
/* Dummy routines to satisfy the build */
.section ".text16", "ax", @progbits
prefix_exit:
prefix_exit_end:
.previous