stage0: Add stage0 hex2 gdb header and footer example.
* stage0/elf32-header-exit-42.hex2: New file. * stage0/elf32-footer-exit-42.hex2: New file.
This commit is contained in:
Jan Nieuwenhuizen
parent
77dfdd44b7
commit
3b82abdfa5
85
stage0/elf32-body-exit-42.hex2
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85
stage0/elf32-body-exit-42.hex2
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### 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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168
stage0/elf32-footer-exit-42.hex2
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168
stage0/elf32-footer-exit-42.hex2
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@ -0,0 +1,168 @@
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### 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-footer-exit-42.hex2: 32 bit elf footer in hex2 for `exit 42'
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# @f0
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:ELF_comment
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4d 45 53 00 # MES
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00 00 00 00
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00 00 00 00 # align
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00 00 00 00 # align
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# @100
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:ELF_shstr
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00
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:ELF_shstr__text
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2e 74 65 78 74 00 # .text
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:ELF_shstr__data
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2e 64 61 74 61 00 # .data
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:ELF_shstr__comment
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2e 63 6f 6d 6d 65 6e 74 00 #.comment
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:ELF_shstr__shstrtab
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2e 73 68 73 74 72 74 61 62 00 #.shstrtab
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:ELF_shstr__symtab
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2e 73 79 6d 74 61 62 00 #.symtab
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:ELF_shstr__strtab
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2e 73 74 72 74 61 62 00 #.strtab
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# @130
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bb bb bb bb
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bb bb bb bb
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bb bb bb bb
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bb bb bb bb
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# @140
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:ELF_sections_headers
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00 00 00 00 # sh_name
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00 00 00 00 # sh_type
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00 00 00 00 # sh_flags
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00 00 00 00 # sh_addr
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00 00 00 00 # sh_offset
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00 00 00 00 # sh_length
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00 00 00 00 # sh_link
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00 00 00 00 # sh_info
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01 00 00 00 # sh_1?
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00 00 00 00 # sh_entsize
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## FIXME: M0 for calculations?
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:ELF_section_header_text
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#@ELF_shstr__text - @ELF_shstr # sh_name
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01 00 00 00 # sh_name
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01 00 00 00 # sh_type = SHT_PROGBITS = 1
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06 00 00 00 # sh_flags = SHF-ALLOC|SHF-EXEC =2 | 4 = 6
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#&ELF_base # sh_addr
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&ELF_text # sh_addr
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#@ELF_text - @ELF_base # sh_addr
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80 00 00 00 # sh_offset
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#@ELF_data - @ELF_text # sh_length
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10 00 00 00 # sh_length
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00 00 00 00 # sh_link
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00 00 00 00 # sh_info
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01 00 00 00 # sh_1?
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00 00 00 00 # sh_entsize
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:ELF_section_header_data
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#@ELF_shstr__data - @ELF_shstr # sh_name
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07 00 00 00 # sh_name
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01 00 00 00 # sh_type = SHT_PROGBITS = 1
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03 00 00 00 # sh_flags = SHF-WRITE|SHF-ALLOC = 1 | 2 = 3
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#&ELF_base # sh_addr
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&ELF_data # sh_addr
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#@ELF_data - @ELF_base # sh_addr
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a0 00 00 00 # sh_offset
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#@ELF_comment - @ELF_data # sh_length
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10 00 00 00 # sh_length
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00 00 00 00 # sh_link
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00 00 00 00 # sh_info
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01 00 00 00 # sh_1?
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00 00 00 00 # sh_entsize
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:ELF_section_header_comment
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#@ELF_shstr__comment - @ELF_shstr # sh_name
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0d 00 00 00 # sh_name
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01 00 00 00 # sh_type = SHT_PROGBITS = 1
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00 00 00 00 # sh_flags
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#&ELF_base # sh_addr
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&ELF_comment # sh_addr
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00 01 00 00 # sh_offset
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00 00 00 00 # sh_length
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00 00 00 00 # sh_link
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00 00 00 00 # sh_info
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01 00 00 00 # sh_1?
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00 00 00 00 # sh_entsize
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:ELF_section_header_shstr
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#@ELF_shstr__shstr - @ELF_shstr # sh_name
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16 00 00 00 # sh_name
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03 00 00 00 # sh_type: str-sht-strtab
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00 00 00 00 # sh_flags
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#&ELF_base # sh_addr
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&ELF_shstr # sh_addr
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00 01 00 00 # sh_offset
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30 00 00 00 # sh_length
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00 00 00 00 # sh_link
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00 00 00 00 # sh_info
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01 00 00 00 # sh_1?
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00 00 00 00 # sh_entsize
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:ELF_section_header_sym
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#@ELF_shstr__sym - @ELF_shstr # sh_name
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20 00 00 00 # sh_name
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02 00 00 00 # sh_type: str-sht-symtab
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00 00 00 00 # sh_flags
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#&ELF_base # sh_addr
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&ELF_sym # sh_addr
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c0 00 00 00 # sh_offset
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30 00 00 00 # sh_length
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06 00 00 00 # sh_link:6
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00 00 00 00 # sh_info
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01 00 00 00 # sh_1?
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10 00 00 00 # sh_entsize
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:ELF_section_header_str
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#@ELF_shstr__str - @ELF_shstr # sh_name
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28 00 00 00 # sh_name
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03 00 00 00 # sh_type: str-sht-strtab
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00 00 00 00 # sh_flags
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#&ELF_base # sh_addr
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&ELF_str # sh_addr
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b0 00 00 00 # sh_offset
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10 00 00 00 # sh_length
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00 00 00 00 # sh_link
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00 00 00 00 # sh_info
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01 00 00 00 # sh_1?
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00 00 00 00 # sh_entsize
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00 00 00 00
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00 00 00 00
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:ELF_end
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00
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87
stage0/elf32-header-exit-42.hex2
Normal file
87
stage0/elf32-header-exit-42.hex2
Normal file
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@ -0,0 +1,87 @@
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### 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-header-exit-42.hex2: 32 bit elf header in hex2 for `exit 42'
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:ELF_base
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## ELF Header
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7F 45 4C 46 # e_ident[EI_MAG0-3] ELF's magic number
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01 # e_ident[EI_CLASS] Indicating 32 bit
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01 # e_ident[EI_DATA] Indicating little endianness
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01 # e_ident[EI_VERSION] Indicating original elf
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00 # e_ident[EI_OSABI] Set at 0 because none cares
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00 # e_ident[EI_ABIVERSION] See above
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00 00 00 00 00 00 00 # e_ident[EI_PAD]
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02 00 # e_type Indicating Executable
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03 00 # e_machine Indicating AMD64
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01 00 00 00 # e_version Indicating original elf
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&ELF_text # e_entry Address of the entry point
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#&ELF_program_headers - &ELF_base # e_phoff Address of program header table
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34 00 00 00 # e_phoff Address of program header table
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#&ELF_section_headers - &ELF_base # e_phoff Address of program header table
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40 01 00 00 # e_shoff Address of section header table
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00 00 00 00 # e_flags
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34 00 # e_ehsize Indicating our 52 Byte header
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20 00 # e_phentsize size of a program header table
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02 00 # e_phnum number of entries in program table
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28 00 # e_shentsize size of a section header table
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07 00 # e_shnum number of entries in section table
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04 00 # e_shstrndx index of the section names
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:ELF_program_header__text
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01 00 00 00 # ph_type: PT-LOAD = 1
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00 00 00 00 # ph_offset
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&ELF_base # ph_vaddr
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&ELF_base # ph_physaddr
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00 03 00 00 # ph_filesz
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00 03 00 00 # ph_memsz
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07 00 00 00 # ph_flags: PF-X|PF-W|PF-R = 7
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01 00 00 00 # ph_align
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# @54
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:ELF_program_header__data
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01 00 00 00 # ph_type: PT-LOAD = 1
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00 00 00 00 # ph_offset
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&ELF_base # ph_vaddr
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&ELF_base # ph_physaddr
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ff ff 00 00 # ph_filesz
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ff ff 00 00 # ph_memsz
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07 00 00 00 # ph_flags: PF-X|PF-W|PF-R = 7
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01 00 00 00 # ph_align
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# @74
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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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86
stage0/elf32.hex3
Normal file
86
stage0/elf32.hex3
Normal file
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@ -0,0 +1,86 @@
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;;; -*-scheme-*-
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;;; Copyright (C) 2016 Jeremiah Orians
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;;; 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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;;; elf32.hex3: 32 bit elf header in hex3
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;; ELF Header
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("*elf-header*"
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#X7F #x45 #X4C #x46 ; e_ident[EI_MAG0-3] ELF's magic number
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#x01 ; e_ident[EI_CLASS] Indicating 32 bit
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#x01 ; e_ident[EI_DATA] Indicating little endianness
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#x01 ; e_ident[EI_VERSION] Indicating original elf
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#x00 ; e_ident[EI_OSABI] Set at 0 because none cares
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#x00 ; e_ident[EI_ABIVERSION] See above
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#x00 #x00 #x00 #x00 #x00 #x00 #x00 ; e_ident[EI_PAD]
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#x02 #x00 ; e_type Indicating Executable
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#x03 #x00 ; e_machine Indicating AMD64
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#x01 #x00 #x00 #x00 ; e_version Indicating original elf
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#x54 #x80 #x04 #x08 ; e_entry Address of the entry point
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#x34 #x00 #x00 #x00 ; e_phoff Address of program header table
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#x00 #x00 #x00 #x00 ; e_shoff Address of section header table
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#x00 #x00 #x00 #x00 ; e_flags
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#x34 #x00 ; e_ehsize Indicating our 52 Byte header
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#x20 #x00 ; e_phentsize size of a program header table
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#x01 #x00 ; e_phnum number of entries in program table
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#x00 #x00 ; e_shentsize size of a section header table
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#x00 #x00 ; e_shnum number of entries in section table
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#x00 #x00 ; e_shstrndx index of the section names
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;; Program Header
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#x01 #x00 #x00 #x00 ; p_type
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#x00 #x00 #x00 #x00 ; p_offset
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#x00 #x80 #x04 #x08 ; p_vaddr
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#x00 #x80 #x04 #x08 ; p_physaddr
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;; FIXME!
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;;#x60 #x00 #x00 #x00 ; p_filesz
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;;#x60 #x00 #x00 #x00 ; p_memsz
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;#x65 #x01 #x00 #x00 ; p_filesz
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;#x65 #x01 #x00 #x00 ; p_memsz
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#xff #xff #x00 #x00 ; p_filesz
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#xff #xff #x00 #x00 ; p_memsz
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#x07 #x00 #x00 #x00 ; p_flags
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#x01 #x00 #x00 #x00 ; alignment
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;; _start
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; exit (42) -- works!
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;#xbb #x2a #x00 #x00 #x00 ; mov $42,%ebx
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;#xb8 #x01 #x00 #x00 #x00 ; mov $0x1,%eax
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;#xcd #x80 ; int $0x80
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)
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("shstr" 0
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#\. #\t #\e #\x #\t 0
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#\. #\d #\a #\t #\a 0
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#\. #\c #\o #\m #\m #\e #\n #\t 0
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#\. #\s #\h #\s #\t #\r #\t #\a #\b 0
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#\. #\s #\y #\m #\t #\a #\b 0
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#\. #\s #\t #\r #\t #\a #\b 0)
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