### Copyright (C) 2016 Jeremiah Orians
### Copyright (C) 2017 Jan Nieuwenhuizen <janneke@gnu.org>
### This file is part of M2-Planet.
###
### M2-Planet 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.
###
### M2-Planet 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 M2-Planet.  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

### 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


: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                    # ph_alignment

:ELF_text
