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mes/lib/linux/riscv64-mes/elf64-header.hex2
W. J. van der Laan 2848cf6a18 lib: Make Linux scaffold work for RISC-V64. 
* lib/linux/riscv64-mes-gcc/exit-42.S,
lib/linux/riscv64-mes-gcc/hello-mes.S,
lib/linux/riscv64-mes/elf64-0exit-42.hex2,
lib/linux/riscv64-mes/elf64-0header.hex2,
lib/linux/riscv64-mes/elf64-0hello-mes.hex2,
lib/linux/riscv64-mes/elf64-body-exit-42.hex2,
lib/linux/riscv64-mes/elf64-body-hello-mes.hex2,
lib/linux/riscv64-mes/elf64-footer-single-main.hex2,
lib/linux/riscv64-mes/elf64-header.hex2: New files.  Makes basic
scaffold pass on RISC-V64.
2023-11-05 09:39:29 +01:00

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### Copyright (C) 2016 Jeremiah Orians
### Copyright (C) 2017,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
### Copyright © 2021 W. J. van der Laan <laanwj@protonmail.com>
###
### 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:
# elf64-header.hex2: 64 bit elf header in hex2, with text segment, data
# segment and symbol tables.
# stage0's hex2 format for riscv64
# !<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
02 # e_ident[EI_CLASS] Indicating 64 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]
# 0x10
02 00 # e_type Indicating Executable
f3 00 # e_machine Indicating AMD64
01 00 00 00 # e_version Indicating original elf
# 0x18
&ELF_text 00 00 00 00 # e_entry Address of the entry point
%ELF_program_headers>ELF_base # e_phoff Address of program header table
00 00 00 00
%ELF_section_headers>ELF_base # e_shoff Address of section header table
00 00 00 00
00 00 00 00 # e_flags
40 00 # e_ehsize Indicating our 64 Byte header
38 00 # e_phentsize size of a program header table
01 00 # e_phnum number of entries in program table
40 00 # e_shentsize size of a section header table
07 00 # e_shnum number of entries in section table
04 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
07 00 00 00 # ph_flags: PF-X|PF-W|PF-R = 7
00 00 00 00 00 00 00 00 # p_offset
&ELF_base 00 00 00 00 # ph_vaddr
&ELF_base 00 00 00 00 # ph_physaddr
%ELF_end>ELF_base 00 00 00 00 # ph_filesz
%ELF_end>ELF_base 00 00 00 00 # ph_memsz
01 00 00 00 00 00 00 00 # ph_align
# @60
#:ELF_program_header__data # NOT USED
# FIXME: linux 4.17 does not allow this overlap
# Uhuuh, elf segment at 0000000001000000
# requested but the memory is mapped already
01 00 00 00 # ph_type: PT-LOAD = 1
07 00 00 00 # ph_flags: PF-X|PF-W|PF-R = 7
00 00 00 00 00 00 00 00 # ph_offset
&ELF_base 00 00 00 00 # ph_vaddr
&ELF_base 00 00 00 00 # ph_physaddr
%ELF_end>ELF_base 00 00 00 00 # ph_filesz
%ELF_end>ELF_base 00 00 00 00 # ph_memsz
01 00 00 00 00 00 00 00 # ph_align
# @b0
:ELF_comment
4d 45 53 00 # MES
00 00 00 00 # align
00 00 00 00
00 00 00 00
# @c0
4d 45 53 00 # MES
00 00 00 00 # align
00 00 00 00
00 00 00 00
# @d0
:ELF_shstr
00
:ELF_shstr__text
2e 74 65 78 74 00 # .text
:ELF_shstr__data
2e 64 61 74 61 00 # .data
:ELF_shstr__comment
2e 63 6f 6d 6d 65 6e 74 00 # .comment
:ELF_shstr__shstr
2e 73 68 73 74 72 74 61 62 00 # .shstrtab
:ELF_shstr__sym
2e 73 79 6d 74 61 62 00 # .symtab
:ELF_shstr__str
2e 73 74 72 74 61 62 00 # .strtab
# @100
:ELF_section_headers
00 00 00 00 # sh_name
00 00 00 00 # sh_type
00 00 00 00 00 00 00 00 # sh_flags
00 00 00 00 00 00 00 00 # sh_addr
00 00 00 00 00 00 00 00 # sh_offset
00 00 00 00 00 00 00 00 # sh_length
00 00 00 00 # sh_link
00 00 00 00 # sh_info
00 00 00 00 00 00 00 00 # sh_1?
00 00 00 00 00 00 00 00 # sh_entsize
## FIXME: M0 for calculations?
:ELF_section_header_text
%ELF_shstr__text>ELF_shstr # sh_name
01 00 00 00 # sh_type = SHT_PROGBITS = 1
06 00 00 00 00 00 00 00 # sh_flags = SHF-ALLOC|SHF-EXEC =2 | 4 = 6
&ELF_text 00 00 00 00 # sh_addr
%ELF_text>ELF_base 00 00 00 00 # sh_offset
%ELF_data>ELF_text 00 00 00 00 # sh_length
00 00 00 00 # sh_link
00 00 00 00 # sh_info
01 00 00 00 00 00 00 00 # sh_1?
00 00 00 00 00 00 00 00 # sh_entsize
:ELF_section_header_data
%ELF_shstr__data>ELF_shstr # sh_name
01 00 00 00 # sh_type = SHT_PROGBITS = 1
03 00 00 00 00 00 00 00 # sh_flags = SHF-WRITE|SHF-ALLOC = 1 | 2 = 3
&ELF_data 00 00 00 00 # sh_addr
%ELF_data>ELF_base 00 00 00 00 # sh_offset
%ELF_sym>ELF_data 00 00 00 00 # sh_length
00 00 00 00 # sh_link
00 00 00 00 # sh_info
01 00 00 00 00 00 00 00 # sh_1?
00 00 00 00 00 00 00 00 # sh_entsize
:ELF_section_header_comment
%ELF_shstr__comment>ELF_shstr # sh_name
01 00 00 00 # sh_type = SHT_PROGBITS = 1
00 00 00 00 00 00 00 00 # sh_flags
&ELF_comment 00 00 00 00 # sh_addr
%ELF_comment>ELF_base 00 00 00 00 # sh_offset
%ELF_shstr>ELF_comment 00 00 00 00 # sh_length
00 00 00 00 # sh_link
00 00 00 00 # sh_info
01 00 00 00 00 00 00 00 # sh_1?
00 00 00 00 00 00 00 00 # sh_entsize
:ELF_section_header_shstr
%ELF_shstr__shstr>ELF_shstr # sh_name
03 00 00 00 # sh_type: str-sht-strtab
00 00 00 00 00 00 00 00 # sh_flags
&ELF_shstr 00 00 00 00 # sh_addr
%ELF_shstr>ELF_base 00 00 00 00 # sh_offset
%ELF_section_headers>ELF_shstr 00 00 00 00 # sh_length
00 00 00 00 # sh_link
00 00 00 00 # sh_info
01 00 00 00 00 00 00 00 # sh_1?
00 00 00 00 00 00 00 00 # sh_entsize
:ELF_section_header_sym
%ELF_shstr__sym>ELF_shstr # sh_name
02 00 00 00 # sh_type: str-sht-symtab
00 00 00 00 00 00 00 00 # sh_flags
&ELF_sym 00 00 00 00 # sh_addr
%ELF_sym>ELF_base 00 00 00 00 # sh_offset
%ELF_end>ELF_sym 00 00 00 00 # sh_length
06 00 00 00 # sh_link:6
03 00 00 00 # sh_info (=number of entries)
01 00 00 00 00 00 00 00 # sh_1?
18 00 00 00 00 00 00 00 # sh_entsize
:ELF_section_header_str
%ELF_shstr__str>ELF_shstr # sh_name
03 00 00 00 # sh_type: str-sht-strtab
00 00 00 00 00 00 00 00 # sh_flags
&ELF_str 00 00 00 00 # sh_addr
%ELF_str>ELF_base 00 00 00 00 # sh_offset
%ELF_sym>ELF_str 00 00 00 00 # sh_length
00 00 00 00 # sh_link
00 00 00 00 # sh_info
01 00 00 00 00 00 00 00 # sh_1?
00 00 00 00 00 00 00 00 # sh_entsize
# @2c0
00 00 00 00 # align
00 00 00 00
00 00 00 00
00 00 00 00
# @2d0
00 00 00 00 # align
00 00 00 00
00 00 00 00
00 00 00 00
# @2e0
00 00 00 00 # align
00 00 00 00
00 00 00 00
00 00 00 00
# @2f0
00 00 00 00 # align
00 00 00 00
00 00 00 00
00 00 00 00
# @300
:ELF_text
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