3b82abdfa5
* stage0/elf32-header-exit-42.hex2: New file. * stage0/elf32-footer-exit-42.hex2: New file.
86 lines
2.1 KiB
Plaintext
86 lines
2.1 KiB
Plaintext
### Copyright (C) 2017 Jan Nieuwenhuizen <janneke@gnu.org>
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### This file is part of stage0.
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###
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### stage0 is free software: you an redistribute it and/or modify
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### it under the terms of the GNU General Public License as published by
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### the Free Software Foundation, either version 3 of the License, or
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### (at your option) any later version.
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###
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### stage0 is distributed in the hope that it will be useful,
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### but WITHOUT ANY WARRANTY; without even the implied warranty of
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### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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### GNU General Public License for more details.
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###
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### You should have received a copy of the GNU General Public License
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### along with stage0. If not, see <http://www.gnu.org/licenses/>.
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### stage0's hex2 format for x86
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### !<label> 1 byte relative
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### $<label> 2 byte address
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### @<label> 2 byte relative
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### &<label> 4 byte address
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### %<label> 4 byte relative
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### local_<label> function-local
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### string_<index> string #<index>
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### elf32-body-exit-42.hex2: 32 bit elf body in hex2 for `exit 42'
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# @80
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:ELF_text
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:_start
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# exit(42)
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bb 2a 00 00 00 # mov $42,%ebx
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b8 01 00 00 00 # mov $0x1,%eax
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cd 80 # int $0x80
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00 00 00 00
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# @90
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:main
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c9 # RET
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00 00 00
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00 00 00 00
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00 00 00 00
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00 00 00 00
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# @a0
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:ELF_data
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65 78 69 74 34 32 20 64 61 74 61 20 68 65 72 65 # exit42 data here"
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#@ b0
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:ELF_str
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00 # 0
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5f 73 74 61 72 74 00 # _start
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6d 61 69 6e 00 # main
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00 00 00
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#@ c0
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:ELF_sym
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00 00 00 00 # st-name
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00 00 00 00 # st-offset: &_start - BaseAddress
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00 00 00 00 # st-len : &main - _start
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00 # st-info = stt-func= 2
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00 # st-other
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01 00 # st-shndx: 1
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# _start
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01 00 00 00 # st-name
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&_start
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10 00 00 00 # st-len : &main - _start
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02 # st-info = stt-func= 2
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00 # st-other
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01 00 # st-shndx: 1
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# main
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08 00 00 00 # st-name
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&main
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10 00 00 00 # st-len : &ELF_data - main
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02 # st-info = stt-func= 2
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00 # st-other
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01 00 # st-shndx: 1
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