86 lines
2.1 KiB
Plaintext
86 lines
2.1 KiB
Plaintext
|
### Copyright (C) 2017 Jan Nieuwenhuizen <janneke@gnu.org>
|
||
|
|
### This file is part of stage0.
|
||
|
|
###
|
||
|
|
### stage0 is free software: you an redistribute it and/or modify
|
||
|
|
### it under the terms of the GNU General Public License as published by
|
||
|
|
### the Free Software Foundation, either version 3 of the License, or
|
||
|
|
### (at your option) any later version.
|
||
|
|
###
|
||
|
|
### stage0 is distributed in the hope that it will be useful,
|
||
|
|
### but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
### GNU General Public License for more details.
|
||
|
|
###
|
||
|
|
### You should have received a copy of the GNU General Public License
|
||
|
|
### along with stage0. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
|
||
|
|
### stage0's hex2 format for x86
|
||
|
|
### !<label> 1 byte relative
|
||
|
|
### $<label> 2 byte address
|
||
|
|
### @<label> 2 byte relative
|
||
|
|
### &<label> 4 byte address
|
||
|
|
### %<label> 4 byte relative
|
||
|
|
### local_<label> function-local
|
||
|
|
### string_<index> string #<index>
|
||
|
|
|
||
|
|
### elf32-body-exit-42.hex2: 32 bit elf body in hex2 for `exit 42'
|
||
|
|
|
||
|
|
# @80
|
||
|
|
:ELF_text
|
||
|
|
:_start
|
||
|
|
# exit(42)
|
||
|
|
bb 2a 00 00 00 # mov $42,%ebx
|
||
|
|
b8 01 00 00 00 # mov $0x1,%eax
|
||
|
|
cd 80 # int $0x80
|
||
|
|
|
||
|
|
00 00 00 00
|
||
|
|
|
||
|
|
# @90
|
||
|
|
:main
|
||
|
|
c9 # RET
|
||
|
|
|
||
|
|
00 00 00
|
||
|
|
00 00 00 00
|
||
|
|
00 00 00 00
|
||
|
|
00 00 00 00
|
||
|
|
|
||
|
|
# @a0
|
||
|
|
:ELF_data
|
||
|
|
65 78 69 74 34 32 20 64 61 74 61 20 68 65 72 65 # exit42 data here"
|
||
|
|
|
||
|
|
#@ b0
|
||
|
|
|
||
|
|
:ELF_str
|
||
|
|
00 # 0
|
||
|
|
5f 73 74 61 72 74 00 # _start
|
||
|
|
6d 61 69 6e 00 # main
|
||
|
|
|
||
|
|
00 00 00
|
||
|
|
|
||
|
|
#@ c0
|
||
|
|
:ELF_sym
|
||
|
|
00 00 00 00 # st-name
|
||
|
|
00 00 00 00 # st-offset: &_start - BaseAddress
|
||
|
|
00 00 00 00 # st-len : &main - _start
|
||
|
|
00 # st-info = stt-func= 2
|
||
|
|
00 # st-other
|
||
|
|
01 00 # st-shndx: 1
|
||
|
|
|
||
|
|
# _start
|
||
|
|
01 00 00 00 # st-name
|
||
|
|
&_start
|
||
|
|
10 00 00 00 # st-len : &main - _start
|
||
|
|
02 # st-info = stt-func= 2
|
||
|
|
00 # st-other
|
||
|
|
01 00 # st-shndx: 1
|
||
|
|
|
||
|
|
# main
|
||
|
|
08 00 00 00 # st-name
|
||
|
|
&main
|
||
|
|
10 00 00 00 # st-len : &ELF_data - main
|
||
|
|
02 # st-info = stt-func= 2
|
||
|
|
00 # st-other
|
||
|
|
01 00 # st-shndx: 1
|
||
|
|
|
||
|
|
|