60 lines
2 KiB
Plaintext
60 lines
2 KiB
Plaintext
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### GNU Mes --- Maxwell Equations of Software
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### Copyright © 2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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###
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### This file is part of GNU Mes.
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###
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### GNU Mes is free software; you can redistribute it and/or modify it
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### 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 (at
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### your option) any later version.
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###
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### GNU Mes is distributed in the hope that it will be useful, but
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### 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 GNU Mes. If not, see <http://www.gnu.org/licenses/>.
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### Commentary:
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# elf64-hello-mes.hex2: `Hello, GNU Mes!' for x86_64-linux written in
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# hex2 assembly, for usage with elf64-0header.hex2. This produces a
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# 224-byte binary (e0 hex). Inspiration was taken from GNU Gcc output
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# of hello-mes.S.
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### Code:
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# @80
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:ELF_text
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# print <hello>
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93 08 00 04 # li a7,64 (sys_write)
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13 05 10 00 # li a0,1
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97 05 00 00 # auipc a1,0x0
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83 e5 c5 00 # lwu a1,12(a1) # addr
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6f 00 80 00 # j 10
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&hello
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17 06 00 00 # auipc a2,0x0
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03 66 c6 00 # lwu a2,12(a2) # addr
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6f 00 80 00 # j 10
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%bye>hello
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13 06 00 01 # li a2,$0x13 (sys_write)
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73 00 00 00 # ecall sys_write
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93 08 d0 05 # li a7,$0x114 (sys_exit)
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13 05 00 00 # li a0,0
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73 00 00 00 # ecall sys_exit
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73 00 50 10 # wfi
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00 00 00 00 00 00 00 00
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00 00 00 00 00 00 00 00 # align to @d0
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# @d0
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:ELF_data
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:hello
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48 65 6c 6c 6f 2c 20 47 # Hello, G
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4e 55 20 4d 65 73 21 0a # NU Mes!\n
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:bye
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:ELF_end
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