porting: arm scaffold WIP
This commit is contained in:
parent
b314c66b3b
commit
37149aa84d
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@ -0,0 +1,46 @@
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/*
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* GNU Mes --- Maxwell Equations of Software
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* Copyright © 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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*
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* You should have received a copy of the GNU General Public License
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||||||
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* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** Commentary: */
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/* Using gdb, esp. GUD in GNU Emacs is recommended
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M-x gdb-display-disassembly-buffer
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M-x gdb-display-io-buffer
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set disassemble-next-line on
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break _start
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run
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info registers
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si
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p/x $r0
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RET
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...
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*/
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/** Code: */
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SYS_exit = 1 /* Linux syscall: exit. */
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.globl _start /* Magic linker symbol: --entry-address. */
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.text /* Program text. */
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_start:
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mov r7,$SYS_exit /* System call function: exit, in r7. */
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mov r0,$42 /* First parameter: exit status, in r0. */
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swi 0 /* Call system. */
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wfi /* Should not be reached. */
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@ -0,0 +1,58 @@
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/*
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* GNU Mes --- Maxwell Equations of Software
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* Copyright © 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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||||||
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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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*
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* You should have received a copy of the GNU General Public License
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||||||
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* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** Commentary: */
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/* Using gdb, esp. GUD in GNU Emacs is recommended
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M-x gdb-display-disassembly-buffer
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M-x gdb-display-io-buffer
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set disassemble-next-line on
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break _start
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run
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info registers
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si
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p/x $r0
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RET
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...
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*/
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/** Code: */
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SYS_exit = 1 /* Linux syscalls. */
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SYS_write = 4
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stdout = 1 /* File discriptor */
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.globl _start /* Magic linker symbol: --entry-address. */
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.text /* Program text. */
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_start:
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mov r7, $SYS_write /* System call function: write, in r7. */
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mov r0, $stdout /* 1st parameter: file descriptor, in r0. */
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add r1, pc, $(hello - here - 4) /* 2nd parameter: address, in r1. */
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here:
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mov r2, $(bye-hello) /* 3rd parameter: byte count r2. */
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swi 0 /* Call system. */
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mov r7,$SYS_exit /* System call function: exit, in r7. */
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mov r0,$0 /* 1st parameter: exit status, in r0. */
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swi 0 /* Call system. */
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wfi /* Should not be reached. */
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hello: .ascii "Hello, GNU Mes!\n"
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bye:
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@ -1,27 +0,0 @@
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### Copyright (C) 2017 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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### Copyright (C) 2019 Danny Milosavljevic <dannym@scratchpost.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 arm
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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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:ELF_end
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### GNU Mes --- Maxwell Equations of Software
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### Copyright (C) 2017,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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### Copyright (C) 2019 Danny Milosavljevic <dannym@scratchpost.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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||||||
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### under the terms of the GNU General Public License as published by
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||||||
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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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||||||
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### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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||||||
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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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||||||
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### Commentary:
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# elf32-exit-42.hex2: `exit 42' for arm-linux written in hex2 assembly,
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# for usage with elf32-0header.hex2. This produces a 112-byte binary
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# (70 hex). Inspiration was taken from GNU Gcc output of exit-42.S.
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### Code:
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# @60
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:ELF_text
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01 70 a0 e3 # mov r7,$0x1
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2a 00 a0 e3 # mov r0,$0x2a
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00 00 00 ef # swi 0
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03 f0 20 e3 # wfi
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:ELF_end
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@ -1,31 +1,39 @@
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### Copyright (C) 2016 Jeremiah Orians
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### Copyright (C) 2016 Jeremiah Orians
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### Copyright (C) 2017 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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### Copyright (C) 2017,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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||||||
### Copyright (C) 2019 Danny Milosavljevic <dannym@scratchpost.org>
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### Copyright (C) 2019 Danny Milosavljevic <dannym@scratchpost.org>
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### This file is part of stage0.
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###
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###
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### stage0 is free software: you an redistribute it and/or modify
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### This file is part of GNU Mes.
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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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###
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||||||
### stage0 is distributed in the hope that it will be useful,
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### GNU Mes is free software; you can redistribute it and/or modify it
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||||||
### but WITHOUT ANY WARRANTY; without even the implied warranty of
|
### under the terms of the GNU General Public License as published by
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||||||
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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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###
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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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||||||
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### WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
### GNU General Public License for more details.
|
### GNU General Public License for more details.
|
||||||
###
|
###
|
||||||
### You should have received a copy of the GNU General Public License
|
### You should have received a copy of the GNU General Public License
|
||||||
### along with stage0. If not, see <http://www.gnu.org/licenses/>.
|
### along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
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||||||
|
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||||||
### stage0's hex2 format for arm
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### Commentary:
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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
|
|
||||||
### %<label> 4 byte relative
|
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||||||
### local_<label> function-local
|
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||||||
### string_<index> string #<index>
|
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||||||
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||||||
### elf32-header-exit-42.hex2: 32 bit elf header in hex2 for `exit 42'
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# elf32-0header.hex2: Simplest 32 bit elf header in hex2. Only a text
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# segment, no data segment, no symbol tables.
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||||||
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# stage0's hex2 format for arm
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# !<label> 1 byte relative
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# $<label> 2 byte address
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||||||
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# @<label> 2 byte relative
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||||||
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# ~<label> 3 byte relative
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||||||
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# &<label> 4 byte address
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||||||
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# %<label> 4 byte relative
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||||||
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# local_<label> function-local
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||||||
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# string_<index> string #<index>
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||||||
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# ^ align
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||||||
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||||||
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### Code:
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||||||
|
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||||||
:ELF_base
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:ELF_base
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||||||
7F 45 4C 46 # e_ident[EI_MAG0-3] ELF's magic number
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7F 45 4C 46 # e_ident[EI_MAG0-3] ELF's magic number
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||||||
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@ -39,8 +47,6 @@
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||||||
|
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||||||
00 00 00 00 00 00 00 # e_ident[EI_PAD]
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00 00 00 00 00 00 00 # e_ident[EI_PAD]
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||||||
|
|
||||||
# Row 2 in od:
|
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||||||
|
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||||||
02 00 # e_type Indicating Executable
|
02 00 # e_type Indicating Executable
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||||||
28 00 # e_machine Indicating 32bit arm
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28 00 # e_machine Indicating 32bit arm
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||||||
01 00 00 00 # e_version Indicating original elf
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01 00 00 00 # e_version Indicating original elf
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||||||
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@ -78,4 +84,5 @@
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||||||
07 00 00 00 # ph_flags: PF-X|PF-W|PF-R = 7
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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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01 00 00 00 # ph_align
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||||||
|
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||||||
|
# @60
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||||||
:ELF_text
|
:ELF_text
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||||||
|
|
|
@ -0,0 +1,50 @@
|
||||||
|
### GNU Mes --- Maxwell Equations of Software
|
||||||
|
### Copyright © 2017,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
|
||||||
|
### Copyright © 2019 Danny Milosavljevic <dannym@scratchpost.org>
|
||||||
|
###
|
||||||
|
### 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:
|
||||||
|
|
||||||
|
# elf32-0hello-mes.hex2: `Hello, GNU Mes!' for arm-linux written in
|
||||||
|
# hex2 assembly, for usage with elf32-0header.hex2. This produces a
|
||||||
|
# 160-byte binary (a0 hex). Inspiration was taken from GNU Gcc output
|
||||||
|
# of hello-mes.S.
|
||||||
|
|
||||||
|
### Code:
|
||||||
|
|
||||||
|
# @60
|
||||||
|
:ELF_text
|
||||||
|
# print <hello>
|
||||||
|
04 70 a0 e3 # mov r7, #4
|
||||||
|
01 00 a0 e3 # mov r0, #1
|
||||||
|
!hello 10 8f e2 # add r1, pc, $(hello - pc)
|
||||||
|
!bye>hello 20 a0 e3 # mov r2, $(bye-hello)
|
||||||
|
00 00 00 ef # swi 0
|
||||||
|
|
||||||
|
# exit 0
|
||||||
|
01 70 a0 e3 # mov r7, #1
|
||||||
|
00 00 a0 e3 # mov r0, #0
|
||||||
|
00 00 00 ef # swi 0
|
||||||
|
03 f0 20 e3 # wfi
|
||||||
|
|
||||||
|
# @90
|
||||||
|
:ELF_data
|
||||||
|
:hello
|
||||||
|
48 65 6c 6c 6f 2c 20 47 # Hello, G
|
||||||
|
4e 55 20 4d 65 73 21 0a # NU Mes!\n
|
||||||
|
:bye
|
||||||
|
:ELF_end
|
|
@ -1,49 +1,48 @@
|
||||||
### Copyright (C) 2017 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
|
### Copyright (C) 2017,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
|
||||||
### Copyright (C) 2019 Danny Milosavljevic <dannym@scratchpost.org>
|
### Copyright (C) 2019 Danny Milosavljevic <dannym@scratchpost.org>
|
||||||
### This file is part of stage0.
|
|
||||||
###
|
###
|
||||||
### stage0 is free software: you an redistribute it and/or modify
|
### This file is part of GNU Mes.
|
||||||
### 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,
|
### GNU Mes is free software; you can redistribute it and/or modify it
|
||||||
### but WITHOUT ANY WARRANTY; without even the implied warranty of
|
### 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
|
### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
### GNU General Public License for more details.
|
### GNU General Public License for more details.
|
||||||
###
|
###
|
||||||
### You should have received a copy of the GNU General Public License
|
### You should have received a copy of the GNU General Public License
|
||||||
### along with stage0. If not, see <http://www.gnu.org/licenses/>.
|
### along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
|
||||||
### stage0's hex2 format for arm
|
### Commentary:
|
||||||
### !<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>
|
|
||||||
|
|
||||||
### elf32-body-exit-42.hex2: 32 bit elf body in hex2 for `exit 42'
|
# elf32-body-exit-42.hex2: `exit 42' for arm-linux written in hex2
|
||||||
|
# assembly, for usage with generic elf32-header.hex2 and
|
||||||
|
# elf32-footer-single-main.hex.
|
||||||
|
|
||||||
|
# This ELF binary contains a symbol table, which means that objdump and
|
||||||
|
# gdb can be used to inspect and debug.
|
||||||
|
|
||||||
|
### Code:
|
||||||
|
|
||||||
# @200
|
# @200
|
||||||
:ELF_text
|
:ELF_text
|
||||||
:_start
|
:_start
|
||||||
# exit(42)
|
^~main eb # bl main
|
||||||
|
00 00 00 00
|
||||||
~main ea # b main
|
|
||||||
00 00 00
|
|
||||||
00 00 00 00
|
00 00 00 00
|
||||||
00 00 00 00
|
00 00 00 00
|
||||||
|
|
||||||
|
# @210
|
||||||
:main
|
:main
|
||||||
|
01 70 a0 e3 # mov r7,$0x1
|
||||||
42 00 a0 e3 # mov $42 -> %r0
|
2a 00 a0 e3 # mov r0,$0x2a
|
||||||
01 70 a0 e3 # mov $0x1 -> %r7
|
00 00 00 ef # swi 0
|
||||||
00 00 00 ef # swi 0
|
03 f0 20 e3 # wfi
|
||||||
|
|
||||||
00 00 00 00
|
|
||||||
|
|
||||||
# @220
|
# @220
|
||||||
:ELF_data
|
:ELF_data
|
||||||
65 78 69 74 34 32 20 64 61 74 61 20 68 65 72 65 # "exit42 data here"
|
65 78 69 74 34 32 20 64 61 74 61 20 68 65 72 65 # exit42 data here"
|
||||||
|
00
|
||||||
|
|
|
@ -0,0 +1,59 @@
|
||||||
|
### Copyright (C) 2017,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
|
||||||
|
### Copyright (C) 2019 Danny Milosavljevic <dannym@scratchpost.org>
|
||||||
|
###
|
||||||
|
### 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:
|
||||||
|
|
||||||
|
# elf32-body-hello-mes.hex2: `exit 42' for arm-linux written in hex2
|
||||||
|
# assembly, for usage with generic elf32-header.hex2 and
|
||||||
|
# elf32-footer-single-main.hex.
|
||||||
|
|
||||||
|
# This ELF binary contains a symbol table, which means that objdump and
|
||||||
|
# gdb can be used to inspect and debug.
|
||||||
|
|
||||||
|
### Code:
|
||||||
|
|
||||||
|
# @200
|
||||||
|
:ELF_text
|
||||||
|
:_start
|
||||||
|
^~main eb # bl main
|
||||||
|
00 00 00 00
|
||||||
|
00 00 00 00
|
||||||
|
00 00 00 00
|
||||||
|
|
||||||
|
# @210
|
||||||
|
:main
|
||||||
|
# print <hello>
|
||||||
|
04 70 a0 e3 # mov r7, #4
|
||||||
|
01 00 a0 e3 # mov r0, #1
|
||||||
|
!hello 10 8f e2 # add r1, pc, $(hello - pc)
|
||||||
|
!bye>hello 20 a0 e3 # mov r2, $(bye-hello)
|
||||||
|
00 00 00 ef # swi 0
|
||||||
|
|
||||||
|
# exit 0
|
||||||
|
01 70 a0 e3 # mov r7, #1
|
||||||
|
00 00 a0 e3 # mov r0, #0
|
||||||
|
00 00 00 ef # swi 0
|
||||||
|
03 f0 20 e3 # wfi
|
||||||
|
|
||||||
|
# @90
|
||||||
|
:ELF_data
|
||||||
|
:hello
|
||||||
|
48 65 6c 6c 6f 2c 20 47 # Hello, G
|
||||||
|
4e 55 20 4d 65 73 21 0a # NU Mes!\n
|
||||||
|
:bye
|
||||||
|
:ELF_end
|
|
@ -1,31 +1,39 @@
|
||||||
### Copyright (C) 2016 Jeremiah Orians
|
### Copyright (C) 2016 Jeremiah Orians
|
||||||
### Copyright (C) 2017 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
|
### Copyright (C) 2017,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
|
||||||
### Copyright (C) 2019 Danny Milosavljevic <dannym@scratchpost.org>
|
### Copyright (C) 2019 Danny Milosavljevic <dannym@scratchpost.org>
|
||||||
### This file is part of stage0.
|
|
||||||
###
|
###
|
||||||
### stage0 is free software: you an redistribute it and/or modify
|
### This file is part of GNU Mes.
|
||||||
### 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,
|
### GNU Mes is free software; you can redistribute it and/or modify it
|
||||||
### but WITHOUT ANY WARRANTY; without even the implied warranty of
|
### 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
|
### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
### GNU General Public License for more details.
|
### GNU General Public License for more details.
|
||||||
###
|
###
|
||||||
### You should have received a copy of the GNU General Public License
|
### You should have received a copy of the GNU General Public License
|
||||||
### along with stage0. If not, see <http://www.gnu.org/licenses/>.
|
### along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
|
||||||
### stage0's hex2 format for arm
|
### Commentary:
|
||||||
### !<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>
|
|
||||||
|
|
||||||
### elf32-header-exit-42.hex2: 32 bit elf header in hex2 for `exit 42'
|
# elf32-header.hex2: 32 bit elf header in hex2, with text segment, data
|
||||||
|
# segment and symbol tables.
|
||||||
|
|
||||||
|
# stage0's hex2 format for arm
|
||||||
|
# !<label> 1 byte relative
|
||||||
|
# $<label> 2 byte address
|
||||||
|
# @<label> 2 byte relative
|
||||||
|
# ~<label> 3 byte relative
|
||||||
|
# &<label> 4 byte address
|
||||||
|
# %<label> 4 byte relative
|
||||||
|
# local_<label> function-local
|
||||||
|
# string_<index> string #<index>
|
||||||
|
# ^ align
|
||||||
|
|
||||||
|
### Code:
|
||||||
|
|
||||||
:ELF_base
|
:ELF_base
|
||||||
7F 45 4C 46 # e_ident[EI_MAG0-3] ELF's magic number
|
7F 45 4C 46 # e_ident[EI_MAG0-3] ELF's magic number
|
||||||
|
|
Loading…
Reference in New Issue