porting: arm scaffold WIP
This commit is contained in:
Jan Nieuwenhuizen
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
|
||||
* 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/>.
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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
|
||||
* 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.
|
||||
*
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||||
* 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.
|
||||
*
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||||
* You should have received a copy of the GNU General Public License
|
||||
* 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
|
||||
### 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,
|
||||
### 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 stage0. 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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### !<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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@ -0,0 +1,34 @@
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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
|
||||
### 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/>.
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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) 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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### This file is part of stage0.
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||||
###
|
||||
### stage0 is free software: you an 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.
|
||||
### This file is part of GNU Mes.
|
||||
###
|
||||
### stage0 is distributed in the hope that it will be useful,
|
||||
### but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
### 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 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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### !<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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### Commentary:
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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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# 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> 3 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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# ^ align
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### Code:
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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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@ -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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# Row 2 in od:
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02 00 # e_type Indicating Executable
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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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@ -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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01 00 00 00 # ph_align
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# @60
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:ELF_text
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||||
|
|
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|||
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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
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||||
# of hello-mes.S.
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|
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### Code:
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||||
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||||
# @60
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:ELF_text
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||||
# print <hello>
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04 70 a0 e3 # mov r7, #4
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01 00 a0 e3 # mov r0, #1
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||||
!hello 10 8f e2 # add r1, pc, $(hello - pc)
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||||
!bye>hello 20 a0 e3 # mov r2, $(bye-hello)
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||||
00 00 00 ef # swi 0
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||||
|
||||
# exit 0
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||||
01 70 a0 e3 # mov r7, #1
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||||
00 00 a0 e3 # mov r0, #0
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00 00 00 ef # swi 0
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03 f0 20 e3 # wfi
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||||
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||||
# @90
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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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||||
|
|
@ -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>
|
||||
### This file is part of stage0.
|
||||
###
|
||||
### stage0 is free software: you an 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.
|
||||
### This file is part of GNU Mes.
|
||||
###
|
||||
### stage0 is distributed in the hope that it will be useful,
|
||||
### but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
### 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 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
|
||||
### !<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>
|
||||
### Commentary:
|
||||
|
||||
### 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
|
||||
:ELF_text
|
||||
:_start
|
||||
# exit(42)
|
||||
|
||||
~main ea # b main
|
||||
00 00 00
|
||||
^~main eb # bl main
|
||||
00 00 00 00
|
||||
00 00 00 00
|
||||
00 00 00 00
|
||||
|
||||
# @210
|
||||
:main
|
||||
|
||||
42 00 a0 e3 # mov $42 -> %r0
|
||||
01 70 a0 e3 # mov $0x1 -> %r7
|
||||
00 00 00 ef # swi 0
|
||||
|
||||
00 00 00 00
|
||||
01 70 a0 e3 # mov r7,$0x1
|
||||
2a 00 a0 e3 # mov r0,$0x2a
|
||||
00 00 00 ef # swi 0
|
||||
03 f0 20 e3 # wfi
|
||||
|
||||
# @220
|
||||
: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) 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>
|
||||
### This file is part of stage0.
|
||||
###
|
||||
### stage0 is free software: you an 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.
|
||||
### This file is part of GNU Mes.
|
||||
###
|
||||
### stage0 is distributed in the hope that it will be useful,
|
||||
### but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
### 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 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
|
||||
### !<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>
|
||||
### Commentary:
|
||||
|
||||
### 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
|
||||
7F 45 4C 46 # e_ident[EI_MAG0-3] ELF's magic number
|
||||
|
|
|
|||
Loading…
Reference in New Issue