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- ### Copyright (C) 2016 Jeremiah Orians
- ### Copyright (C) 2017,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
- ###
- ### This file is part of GNU Mes.
- ###
- ### GNU Mes is free software; you can 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.
- ###
- ### GNU Mes 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 GNU Mes. If not, see <http://www.gnu.org/licenses/>.
- ### Commentary:
- # elf32-0header.hex2: Simplest 32 bit elf header in hex2. Only a text
- # segment, no data segment, no symbol tables.
- # 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>
- ### Code:
- :ELF_base
- 7F 45 4C 46 # e_ident[EI_MAG0-3] ELF's magic number
- 01 # e_ident[EI_CLASS] Indicating 32 bit
- 01 # e_ident[EI_DATA] Indicating little endianness
- 01 # e_ident[EI_VERSION] Indicating original elf
- 00 # e_ident[EI_OSABI] Set at 0 because none cares
- 00 # e_ident[EI_ABIVERSION] See above
- 00 00 00 00 00 00 00 # e_ident[EI_PAD]
- 02 00 # e_type Indicating Executable
- 03 00 # e_machine Indicating 32bit x86
- 01 00 00 00 # e_version Indicating original elf
- &ELF_text # e_entry Address of the entry point
- %ELF_program_headers>ELF_base # e_phoff Address of program header table
- 00 00 00 00 # e_shoff Address of section header table
- 00 00 00 00 # e_flags
- 34 00 # e_ehsize Indicating our 52 Byte header
- 20 00 # e_phentsize size of a program header table
- 01 00 # e_phnum number of entries in program table
- 00 00 # e_shentsize size of a section header table
- 00 00 # e_shnum number of entries in section table
- 00 00 # e_shstrndx index of the section names
- # @34
- 00 00 00 00
- 00 00 00 00
- 00 00 00 00
- # @40
- :ELF_program_headers
- :ELF_program_header__text
- 01 00 00 00 # ph_type: PT-LOAD = 1
- 00 00 00 00 # ph_offset
- &ELF_base # ph_vaddr
- &ELF_base # ph_physaddr
- %ELF_end>ELF_base # ph_filesz
- %ELF_end>ELF_base # ph_memsz
- 07 00 00 00 # ph_flags: PF-X|PF-W|PF-R = 7
- 01 00 00 00 # ph_align
- # @60
- :ELF_text
|
