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- ### Copyright (C) 2016 Jeremiah Orians
- ### Copyright (C) 2017 Jan Nieuwenhuizen <janneke@gnu.org>
- ### This file is part of stage0.
- ###
- ### stage0 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.
- ###
- ### 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
- ### !<label> 1 byte relative
- ### $<label> 2 byte address
- ### @<label> 2 byte relative
- ### &<label> 4 byte address
- ### %<label> 4 byte relative
- ### elf32.hex2: 32 bit elf header in hex2
- ### if you wish to use this header, you need to add :ELF_end to the end of your
- ### M1 or hex2 files.
- ## ELF Header
- :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
- 03 # e_ident[EI_OSABI] Set at 3 because FreeBSD is strict
- 00 # e_ident[EI_ABIVERSION] See above
- 00 00 00 00 00 00 00 # e_ident[EI_PAD]
- 02 00 # e_type Indicating Executable
- 28 00 # e_machine Indicating 32bit ARM
- 01 00 00 00 # e_version Indicating original elf
- &_start # e_entry Address of the entry point
- %ELF_program_headers>ELF_base # e_phoff Address of program header table
- %ELF_section_headers>ELF_base # e_shoff Address of section header table
- 00 02 00 05 # 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
- 28 00 # e_shentsize size of a section header table
- 05 00 # e_shnum number of entries in section table
- 02 00 # e_shstrndx index of the section names
- # @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
- 00 00 01 00 # alignment
- :ELF_text
|
