freebsd: Initial x86 scaffold.
* lib/freebsd/x86-mes-gcc/crt1.c: New file. * lib/freebsd/x86-mes-gcc/exit-42.S: New file. * lib/freebsd/x86-mes-gcc/hello-mes.S: New file. * lib/freebsd/x86-mes-gcc/mini.c: New file. * lib/freebsd/x86-mes-mescc/crt1.c: New file. * lib/freebsd/x86-mes-mescc/mini.c: New file. * lib/freebsd/x86-mes/elf32-0exit-42.hex2: New file. * lib/freebsd/x86-mes/elf32-0header.hex2: New file. * lib/freebsd/x86-mes/elf32-0hello-mes.hex2: New file. * lib/freebsd/x86-mes/elf32-body-exit-42.hex2: New file. * lib/freebsd/x86-mes/elf32-body-hello-mes.hex2: New file. * lib/freebsd/x86-mes/elf32-footer-single-main.hex2: New file. * lib/freebsd/x86-mes/elf32-header.hex2: New file.
This commit is contained in:
Jan Nieuwenhuizen
parent
e4f293afdd
commit
ec9aecea07
76
lib/freebsd/x86-mes-gcc/crt1.c
Normal file
76
lib/freebsd/x86-mes-gcc/crt1.c
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@ -0,0 +1,76 @@
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/* -*-comment-start: "//";comment-end:""-*-
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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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*/
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#include <mes/lib-mini.h>
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//int main (int argc, char *argv[], char *envp[]);
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// *INDENT-OFF*
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void
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_start ()
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{
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asm (
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"mov $0,%%eax\n\t"
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"mov %%eax,%0\n"
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: "=r" (__stdin)
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: //no inputs ""
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);
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asm (
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"mov $1,%%eax\n\t"
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"mov %%eax,%0\n"
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: "=r" (__stdout)
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: //no inputs ""
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);
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asm (
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"mov $2,%%eax\n\t"
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"mov %%eax,%0\n"
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: "=r" (__stderr)
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: //no inputs ""
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);
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asm (
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"mov %%ebp,%%eax\n\t"
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"add $4,%%eax\n\t"
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"movzbl (%%eax),%%eax\n\t"
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"add $3,%%eax\n\t"
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"shl $2,%%eax\n\t"
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"add %%ebp,%%eax\n\t"
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"mov %%eax,%0\n\t"
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"push %%eax\n\t"
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: "=r" (environ)
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: //no inputs ""
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);
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asm (
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"mov %ebp,%eax\n\t"
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"add $8,%eax\n\t"
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"push %eax\n\t"
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"mov %ebp,%eax\n\t"
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"add $4,%eax\n\t"
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"movzbl (%eax),%eax\n\t"
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"push %eax\n\t"
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"call main\n\t"
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"push %eax\n\t"
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"call _exit\n\t"
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"hlt \n\t"
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);
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}
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47
lib/freebsd/x86-mes-gcc/exit-42.S
Normal file
47
lib/freebsd/x86-mes-gcc/exit-42.S
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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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* 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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/* 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 $eax
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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 /* FreeBSD 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 $SYS_exit,%eax /* System call function: exit, in %eax. */
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push $42 /* Push first parameter: exit status. */
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push $00 /* Push ??. */
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int $0x80 /* Call system. */
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hlt /* Should not be reached. */
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60
lib/freebsd/x86-mes-gcc/hello-mes.S
Normal file
60
lib/freebsd/x86-mes-gcc/hello-mes.S
Normal file
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@ -0,0 +1,60 @@
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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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|
* 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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/* 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 $eax
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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 $SYS_write,%eax /* System call function: write, in %eax. */
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push $(bye-hello) /* 3rd parameter: byte count. */
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push $hello /* 2nd parameter: address. */
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push $stdout /* 1st parameter: file descriptor. */
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push $0 /* ?? */
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int $0x80 /* Call system. */
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mov $SYS_exit,%eax /* System call function: exit, in %eax. */
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push $0 /* 1st parameter: exit status. */
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push $0 /* ?? */
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int $0x80 /* Call system. */
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hlt /* Should not be reached. */
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.data
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hello: .ascii "Hello, GNU Mes!\n"
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bye: .byte 0
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64
lib/freebsd/x86-mes-gcc/mini.c
Normal file
64
lib/freebsd/x86-mes-gcc/mini.c
Normal file
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@ -0,0 +1,64 @@
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/* -*-comment-start: "//";comment-end:""-*-
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* GNU Mes --- Maxwell Equations of Software
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* Copyright © 2016,2017,2019 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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||||||
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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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* 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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||||||
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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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#include "mes/lib-mini.h"
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#define SYS_exit "0x01"
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#define SYS_write "0x04"
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// *INDENT-OFF*
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void
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_exit (int code)
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{
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asm (
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"mov $"SYS_exit",%%eax\n\t"
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"mov %0,%%ebx\n\t"
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"push %%ebx\n\t"
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"push %%ebx\n\t"
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||||||
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"int $0x80\n\t"
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: // no outputs "=" (r)
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: "rm" (code)
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: "eax", "ebx"
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);
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// not reached
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_exit (0);
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}
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|
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|
ssize_t
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_write (int filedes, void const *buffer, size_t size)
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{
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long r;
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asm (
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"mov $"SYS_write",%%eax\n\t"
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"mov %3,%%edx\n\t"
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||||||
|
"push %%edx\n\t"
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||||||
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"mov %2,%%ecx\n\t"
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||||||
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"push %%ecx\n\t"
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||||||
|
"mov %1,%%ebx\n\t"
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||||||
|
"push %%ebx\n\t"
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||||||
|
"push %%ebx\n\t"
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||||||
|
"int $0x80\n\t"
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||||||
|
"mov %%eax,%0\n\t"
|
||||||
|
: "=r" (r)
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||||||
|
: "rm" (filedes), "rm" (buffer), "rm" (size)
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||||||
|
: "eax", "ebx", "ecx", "edx"
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||||||
|
);
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||||||
|
return r;
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||||||
|
}
|
||||||
65
lib/freebsd/x86-mes-mescc/crt1.c
Normal file
65
lib/freebsd/x86-mes-mescc/crt1.c
Normal file
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|
@ -0,0 +1,65 @@
|
||||||
|
/* -*-comment-start: "//";comment-end:""-*-
|
||||||
|
* GNU Mes --- Maxwell Equations of Software
|
||||||
|
* Copyright © 2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
|
||||||
|
*
|
||||||
|
* This file is part of GNU Mes.
|
||||||
|
*
|
||||||
|
* GNU Mes is free software; you can redistribute it and/or modify it
|
||||||
|
* under the terms of the GNU General Public License as published by
|
||||||
|
* the Free Software Foundation; either version 3 of the License, or (at
|
||||||
|
* your option) any later version.
|
||||||
|
*
|
||||||
|
* GNU Mes is distributed in the hope that it will be useful, but
|
||||||
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
* GNU General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public License
|
||||||
|
* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include "mes/lib-mini.h"
|
||||||
|
|
||||||
|
int main (int argc, char *argv[], char *envp[]);
|
||||||
|
|
||||||
|
int
|
||||||
|
_start ()
|
||||||
|
{
|
||||||
|
asm ("mov____$i8,%eax !0");
|
||||||
|
asm ("mov____%eax,0x32 &__stdin");
|
||||||
|
|
||||||
|
asm ("mov____$i8,%eax !1");
|
||||||
|
asm ("mov____%eax,0x32 &__stdout");
|
||||||
|
|
||||||
|
asm ("mov____$i8,%eax !2");
|
||||||
|
asm ("mov____%eax,0x32 &__stderr");
|
||||||
|
|
||||||
|
asm ("mov____%ebp,%eax");
|
||||||
|
asm ("add____$i8,%eax !4");
|
||||||
|
|
||||||
|
asm ("movzbl_(%eax),%eax");
|
||||||
|
asm ("add____$i8,%eax !3");
|
||||||
|
|
||||||
|
asm ("shl____$i8,%eax !0x02");
|
||||||
|
asm ("add____%ebp,%eax");
|
||||||
|
asm ("mov____%eax,0x32 &environ");
|
||||||
|
asm ("push___%eax");
|
||||||
|
|
||||||
|
asm ("mov____%ebp,%eax");
|
||||||
|
asm ("add____$i8,%eax !8");
|
||||||
|
asm ("push___%eax");
|
||||||
|
|
||||||
|
asm ("mov____%ebp,%eax");
|
||||||
|
asm ("add____$i8,%eax !4");
|
||||||
|
asm ("movzbl_(%eax),%eax");
|
||||||
|
asm ("push___%eax");
|
||||||
|
|
||||||
|
main ();
|
||||||
|
|
||||||
|
asm ("mov____%eax,%ebx");
|
||||||
|
asm ("mov____$i32,%eax %1");
|
||||||
|
asm ("push___%ebx");
|
||||||
|
asm ("push___%ebx");
|
||||||
|
asm ("int____$0x80");
|
||||||
|
asm ("hlt");
|
||||||
|
}
|
||||||
43
lib/freebsd/x86-mes-mescc/mini.c
Normal file
43
lib/freebsd/x86-mes-mescc/mini.c
Normal file
|
|
@ -0,0 +1,43 @@
|
||||||
|
/* -*-comment-start: "//";comment-end:""-*-
|
||||||
|
* GNU Mes --- Maxwell Equations of Software
|
||||||
|
* Copyright © 2016,2017,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
|
||||||
|
*
|
||||||
|
* This file is part of GNU Mes.
|
||||||
|
*
|
||||||
|
* GNU Mes is free software; you can redistribute it and/or modify it
|
||||||
|
* under the terms of the GNU General Public License as published by
|
||||||
|
* the Free Software Foundation; either version 3 of the License, or (at
|
||||||
|
* your option) any later version.
|
||||||
|
*
|
||||||
|
* GNU Mes is distributed in the hope that it will be useful, but
|
||||||
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
* GNU General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public License
|
||||||
|
* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
*/
|
||||||
|
|
||||||
|
void
|
||||||
|
_exit ()
|
||||||
|
{
|
||||||
|
asm ("mov____$i32,%eax SYS_exit");
|
||||||
|
asm ("mov____0x8(%ebp),%ebx !8");
|
||||||
|
asm ("push___%ebx");
|
||||||
|
asm ("push___%ebx");
|
||||||
|
asm ("int____$0x80");
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
_write ()
|
||||||
|
{
|
||||||
|
asm ("mov____$i32,%eax SYS_write");
|
||||||
|
asm ("mov____0x8(%ebp),%edx !16");
|
||||||
|
asm ("push___%edx");
|
||||||
|
asm ("mov____0x8(%ebp),%ecx !12");
|
||||||
|
asm ("push___%ecx");
|
||||||
|
asm ("mov____0x8(%ebp),%ebx !8");
|
||||||
|
asm ("push___%ebx");
|
||||||
|
asm ("push___%ebx");
|
||||||
|
asm ("int____$0x80");
|
||||||
|
}
|
||||||
39
lib/freebsd/x86-mes/elf32-0exit-42.hex2
Normal file
39
lib/freebsd/x86-mes/elf32-0exit-42.hex2
Normal file
|
|
@ -0,0 +1,39 @@
|
||||||
|
### GNU Mes --- Maxwell Equations of Software
|
||||||
|
### Copyright © 2017,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.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-exit-42.hex2: `exit 42' for i686-freebsd written in hex2 assembly,
|
||||||
|
# for usage with elf32-0header.hex2. This produces a 112-byte binary
|
||||||
|
# (70 hex). Inspiration was taken from GNU Gcc output of exit-42.S.
|
||||||
|
|
||||||
|
### Code:
|
||||||
|
|
||||||
|
# DEFINE SYS_exit 1
|
||||||
|
|
||||||
|
# @60
|
||||||
|
:ELF_text
|
||||||
|
b8 01 00 00 00 # mov SYS_exit,%eax
|
||||||
|
68 2a 00 00 00 # push $42
|
||||||
|
68 00 00 00 00 # push $00
|
||||||
|
cd 80 # int $0x80
|
||||||
|
f4 # hlt
|
||||||
|
|
||||||
|
00 00 00 00 00 00 # align to @80
|
||||||
|
00 00 00 00 00 00 00 00
|
||||||
|
:ELF_end
|
||||||
85
lib/freebsd/x86-mes/elf32-0header.hex2
Normal file
85
lib/freebsd/x86-mes/elf32-0header.hex2
Normal file
|
|
@ -0,0 +1,85 @@
|
||||||
|
### Copyright (C) 2016 Jeremiah Orians
|
||||||
|
### Copyright (C) 2017,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.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:
|
||||||
|
|
||||||
|
# elf32-0header.hex2: Simplest 32 bit elf header in hex2. Only a text
|
||||||
|
# segment, no data segment, no symbol tables.
|
||||||
|
|
||||||
|
# stage0's hex2 format for x86
|
||||||
|
# !<label> 1 byte relative
|
||||||
|
# $<label> 2 byte address
|
||||||
|
# @<label> 2 byte relative
|
||||||
|
# &<label> 4 byte address
|
||||||
|
# %<label> 4 byte relative
|
||||||
|
# local_<label> function-local
|
||||||
|
# string_<index> string #<index>
|
||||||
|
|
||||||
|
### Code:
|
||||||
|
|
||||||
|
:ELF_base
|
||||||
|
7F 45 4C 46 # e_ident[EI_MAG0-3] ELF's magic number
|
||||||
|
|
||||||
|
01 # e_ident[EI_CLASS] Indicating 32 bit
|
||||||
|
01 # e_ident[EI_DATA] Indicating little endianness
|
||||||
|
01 # e_ident[EI_VERSION] Indicating original elf
|
||||||
|
|
||||||
|
09 # e_ident[EI_OSABI] FreeBSD
|
||||||
|
00 # e_ident[EI_ABIVERSION] Not specified because nobody cares
|
||||||
|
|
||||||
|
00 00 00 00 00 00 00 # e_ident[EI_PAD]
|
||||||
|
|
||||||
|
02 00 # e_type Indicating Executable
|
||||||
|
03 00 # e_machine Indicating 32bit x86
|
||||||
|
01 00 00 00 # e_version Indicating original elf
|
||||||
|
|
||||||
|
&ELF_text # e_entry Address of the entry point
|
||||||
|
%ELF_program_headers>ELF_base # e_phoff Address of program header table
|
||||||
|
00 00 00 00 # e_shoff Address of section header table
|
||||||
|
|
||||||
|
00 00 00 00 # e_flags
|
||||||
|
|
||||||
|
34 00 # e_ehsize Indicating our 52 Byte header
|
||||||
|
|
||||||
|
20 00 # e_phentsize size of a program header table
|
||||||
|
01 00 # e_phnum number of entries in program table
|
||||||
|
|
||||||
|
00 00 # e_shentsize size of a section header table
|
||||||
|
00 00 # e_shnum number of entries in section table
|
||||||
|
|
||||||
|
00 00 # e_shstrndx index of the section names
|
||||||
|
|
||||||
|
# @34
|
||||||
|
00 00 00 00
|
||||||
|
00 00 00 00
|
||||||
|
00 00 00 00
|
||||||
|
|
||||||
|
# @40
|
||||||
|
:ELF_program_headers
|
||||||
|
:ELF_program_header__text
|
||||||
|
01 00 00 00 # ph_type: PT-LOAD = 1
|
||||||
|
00 00 00 00 # ph_offset
|
||||||
|
&ELF_base # ph_vaddr
|
||||||
|
&ELF_base # ph_physaddr
|
||||||
|
%ELF_end>ELF_base # ph_filesz
|
||||||
|
%ELF_end>ELF_base # ph_memsz
|
||||||
|
07 00 00 00 # ph_flags: PF-X|PF-W|PF-R = 7
|
||||||
|
01 00 00 00 # ph_align
|
||||||
|
|
||||||
|
# @60
|
||||||
|
:ELF_text
|
||||||
58
lib/freebsd/x86-mes/elf32-0hello-mes.hex2
Normal file
58
lib/freebsd/x86-mes/elf32-0hello-mes.hex2
Normal file
|
|
@ -0,0 +1,58 @@
|
||||||
|
### GNU Mes --- Maxwell Equations of Software
|
||||||
|
### Copyright © 2017,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.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 i686-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:
|
||||||
|
|
||||||
|
# DEFINE SYS_exit 1
|
||||||
|
# DEFINE SYS_write 4
|
||||||
|
# DEFINE stdout 1
|
||||||
|
|
||||||
|
# @60
|
||||||
|
:ELF_text
|
||||||
|
|
||||||
|
# print <hello>
|
||||||
|
b8 04 00 00 00 # mov $SYS_write,%eax
|
||||||
|
68 %bye>hello # push $(bye-hello)
|
||||||
|
68 &hello # push $hello
|
||||||
|
68 01 00 00 00 # push $stdout
|
||||||
|
68 00 00 00 00 # push ??
|
||||||
|
cd 80 # int $0x80
|
||||||
|
|
||||||
|
# exit 0
|
||||||
|
b8 01 00 00 00 # mov $SYS_exit,%eax
|
||||||
|
68 00 00 00 00 # mov $0,%ebx
|
||||||
|
68 00 00 00 00 # push ??
|
||||||
|
cd 80 # int $0x80
|
||||||
|
f4 # hlt
|
||||||
|
|
||||||
|
00 00 00 # align to a0
|
||||||
|
|
||||||
|
# @a0
|
||||||
|
: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
|
||||||
54
lib/freebsd/x86-mes/elf32-body-exit-42.hex2
Normal file
54
lib/freebsd/x86-mes/elf32-body-exit-42.hex2
Normal file
|
|
@ -0,0 +1,54 @@
|
||||||
|
### GNU Mes --- Maxwell Equations of Software
|
||||||
|
### Copyright © 2017,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.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-exit-42.hex2: `exit 42' for i686-freebsd 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:
|
||||||
|
|
||||||
|
# DEFINE SYS_exit 1
|
||||||
|
|
||||||
|
# @200
|
||||||
|
:ELF_text
|
||||||
|
:_start
|
||||||
|
e8 %main # call +11 <main>
|
||||||
|
00 00 00
|
||||||
|
00 00 00 00
|
||||||
|
00 00 00 00
|
||||||
|
|
||||||
|
# @210
|
||||||
|
:main
|
||||||
|
b8 01 00 00 00 # mov SYS_exit,%eax
|
||||||
|
68 2a 00 00 00 # push $42
|
||||||
|
68 00 00 00 00 # push $00
|
||||||
|
cd 80 # int $0x80
|
||||||
|
f4 # hlt
|
||||||
|
|
||||||
|
00 00 00 00 00 00 # align
|
||||||
|
00 00 00 00 00 00 00 00
|
||||||
|
|
||||||
|
# @230
|
||||||
|
:ELF_data
|
||||||
|
65 78 69 74 34 32 20 64 61 74 61 20 68 65 72 65 # exit42 data here"
|
||||||
|
00
|
||||||
69
lib/freebsd/x86-mes/elf32-body-hello-mes.hex2
Normal file
69
lib/freebsd/x86-mes/elf32-body-hello-mes.hex2
Normal file
|
|
@ -0,0 +1,69 @@
|
||||||
|
### GNU Mes --- Maxwell Equations of Software
|
||||||
|
### Copyright © 2017,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.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: `Hello, GNU Mes!' for i686-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:
|
||||||
|
|
||||||
|
# DEFINE SYS_exit 1
|
||||||
|
# DEFINE SYS_write 4
|
||||||
|
# DEFINE stdout 1
|
||||||
|
|
||||||
|
# @200
|
||||||
|
:ELF_text
|
||||||
|
:_start
|
||||||
|
e8 %main # call +11 <main>
|
||||||
|
00 00 00
|
||||||
|
00 00 00 00
|
||||||
|
00 00 00 00
|
||||||
|
|
||||||
|
# @210
|
||||||
|
:main
|
||||||
|
# print <hello>
|
||||||
|
b8 04 00 00 00 # mov $SYS_write,%eax
|
||||||
|
68 %bye>hello # push $(bye-hello)
|
||||||
|
68 &hello # push $hello
|
||||||
|
68 01 00 00 00 # push $stdout
|
||||||
|
68 00 00 00 00 # push ??
|
||||||
|
cd 80 # int $0x80
|
||||||
|
|
||||||
|
# exit 0
|
||||||
|
b8 01 00 00 00 # mov $SYS_exit,%eax
|
||||||
|
68 00 00 00 00 # push 0
|
||||||
|
68 00 00 00 00 # push ??
|
||||||
|
cd 80 # int $0x80
|
||||||
|
f4 # hlt
|
||||||
|
|
||||||
|
00 00 00 00 00 00 00 00 00 00 # align to @240
|
||||||
|
00 00 00
|
||||||
|
|
||||||
|
# @240
|
||||||
|
: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
|
||||||
|
00
|
||||||
64
lib/freebsd/x86-mes/elf32-footer-single-main.hex2
Normal file
64
lib/freebsd/x86-mes/elf32-footer-single-main.hex2
Normal file
|
|
@ -0,0 +1,64 @@
|
||||||
|
### Copyright (C) 2017 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
|
||||||
|
### This file is part of stage0.
|
||||||
|
###
|
||||||
|
### stage0 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.
|
||||||
|
###
|
||||||
|
### 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/>.
|
||||||
|
|
||||||
|
### stage0's hex2 format for x86
|
||||||
|
### !<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-footer-single-main.hex2: 32 bit elf footer in hex2 for single main
|
||||||
|
|
||||||
|
# @230
|
||||||
|
|
||||||
|
:ELF_str
|
||||||
|
00 # 0
|
||||||
|
:ELF_str__start
|
||||||
|
5f 73 74 61 72 74 00 # _start
|
||||||
|
:ELF_str__main
|
||||||
|
6d 61 69 6e 00 # main
|
||||||
|
|
||||||
|
00 00 00
|
||||||
|
|
||||||
|
# @240
|
||||||
|
:ELF_sym
|
||||||
|
00 00 00 00 # st-name
|
||||||
|
00 00 00 00 # st-offset: &_start - BaseAddress
|
||||||
|
00 00 00 00 # st-len : &main - _start
|
||||||
|
00 # st-info = stt-func= 2
|
||||||
|
00 # st-other
|
||||||
|
01 00 # st-shndx: 1
|
||||||
|
|
||||||
|
# _start
|
||||||
|
%ELF_str__start>ELF_str # st-name
|
||||||
|
&_start
|
||||||
|
10 00 00 00 # st-len : &main - _start
|
||||||
|
02 # st-info = stt-func= 2
|
||||||
|
00 # st-other
|
||||||
|
01 00 # st-shndx: 1
|
||||||
|
|
||||||
|
# main
|
||||||
|
%ELF_str__main>ELF_str # st-name
|
||||||
|
&main
|
||||||
|
10 00 00 00 # st-len : &ELF_data - main
|
||||||
|
02 # st-info = stt-func= 2
|
||||||
|
00 # st-other
|
||||||
|
01 00 # st-shndx: 1
|
||||||
|
|
||||||
|
:ELF_end
|
||||||
225
lib/freebsd/x86-mes/elf32-header.hex2
Normal file
225
lib/freebsd/x86-mes/elf32-header.hex2
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|
|
@ -0,0 +1,225 @@
|
||||||
|
### Copyright (C) 2016 Jeremiah Orians
|
||||||
|
### Copyright (C) 2017,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.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-header.hex2: 32 bit elf header in hex2, with text segment, data
|
||||||
|
# segment and symbol tables.
|
||||||
|
|
||||||
|
# stage0's hex2 format for x86
|
||||||
|
# !<label> 1 byte relative
|
||||||
|
# $<label> 2 byte address
|
||||||
|
# @<label> 2 byte relative
|
||||||
|
# &<label> 4 byte address
|
||||||
|
# %<label> 4 byte relative
|
||||||
|
# local_<label> function-local
|
||||||
|
# string_<index> string #<index>
|
||||||
|
|
||||||
|
### Code:
|
||||||
|
|
||||||
|
:ELF_base
|
||||||
|
7F 45 4C 46 # e_ident[EI_MAG0-3] ELF's magic number
|
||||||
|
|
||||||
|
01 # e_ident[EI_CLASS] Indicating 32 bit
|
||||||
|
01 # e_ident[EI_DATA] Indicating little endianness
|
||||||
|
01 # e_ident[EI_VERSION] Indicating original elf
|
||||||
|
|
||||||
|
09 # e_ident[EI_OSABI] FreeBSD
|
||||||
|
00 # e_ident[EI_ABIVERSION] Not specified because nobody cares
|
||||||
|
|
||||||
|
00 00 00 00 00 00 00 # e_ident[EI_PAD]
|
||||||
|
|
||||||
|
02 00 # e_type Indicating Executable
|
||||||
|
03 00 # e_machine Indicating 32bit x86
|
||||||
|
01 00 00 00 # e_version Indicating original elf
|
||||||
|
|
||||||
|
&ELF_text # e_entry Address of the entry point
|
||||||
|
%ELF_program_headers>ELF_base # e_phoff Address of program header table
|
||||||
|
%ELF_section_headers>ELF_base # e_shoff Address of section header table
|
||||||
|
|
||||||
|
00 00 00 00 # e_flags
|
||||||
|
|
||||||
|
34 00 # e_ehsize Indicating our 52 Byte header
|
||||||
|
|
||||||
|
20 00 # e_phentsize size of a program header table
|
||||||
|
01 00 # e_phnum number of entries in program table
|
||||||
|
|
||||||
|
28 00 # e_shentsize size of a section header table
|
||||||
|
07 00 # e_shnum number of entries in section table
|
||||||
|
|
||||||
|
04 00 # e_shstrndx index of the section names
|
||||||
|
|
||||||
|
# @34
|
||||||
|
00 00 00 00
|
||||||
|
00 00 00 00
|
||||||
|
00 00 00 00
|
||||||
|
|
||||||
|
# @40
|
||||||
|
:ELF_program_headers
|
||||||
|
:ELF_program_header__text
|
||||||
|
01 00 00 00 # ph_type: PT-LOAD = 1
|
||||||
|
00 00 00 00 # ph_offset
|
||||||
|
&ELF_base # ph_vaddr
|
||||||
|
&ELF_base # ph_physaddr
|
||||||
|
%ELF_end>ELF_base # ph_filesz
|
||||||
|
%ELF_end>ELF_base # ph_memsz
|
||||||
|
07 00 00 00 # ph_flags: PF-X|PF-W|PF-R = 7
|
||||||
|
01 00 00 00 # ph_align
|
||||||
|
|
||||||
|
# @60
|
||||||
|
#:ELF_program_header__data # NOT USED
|
||||||
|
# FIXME: linux 4.17 does not allow this overlap
|
||||||
|
# Uhuuh, elf segment at 0000000001000000
|
||||||
|
# requested but the memory is mapped already
|
||||||
|
01 00 00 00 # ph_type: PT-LOAD = 1
|
||||||
|
00 00 00 00 # ph_offset
|
||||||
|
&ELF_base # ph_vaddr
|
||||||
|
&ELF_base # ph_physaddr
|
||||||
|
%ELF_end>ELF_base # ph_filesz
|
||||||
|
%ELF_end>ELF_base # ph_memsz
|
||||||
|
07 00 00 00 # ph_flags: PF-X|PF-W|PF-R = 7
|
||||||
|
01 00 00 00 # ph_align
|
||||||
|
|
||||||
|
# @80
|
||||||
|
:ELF_comment
|
||||||
|
4d 45 53 00 # MES
|
||||||
|
00 00 00 00 # align
|
||||||
|
00 00 00 00
|
||||||
|
00 00 00 00
|
||||||
|
|
||||||
|
4d 45 53 00 # MES
|
||||||
|
00 00 00 00 # align
|
||||||
|
00 00 00 00
|
||||||
|
00 00 00 00
|
||||||
|
|
||||||
|
# @a0
|
||||||
|
:ELF_shstr
|
||||||
|
00
|
||||||
|
:ELF_shstr__text
|
||||||
|
2e 74 65 78 74 00 # .text
|
||||||
|
:ELF_shstr__data
|
||||||
|
2e 64 61 74 61 00 # .data
|
||||||
|
:ELF_shstr__comment
|
||||||
|
2e 63 6f 6d 6d 65 6e 74 00 # .comment
|
||||||
|
:ELF_shstr__shstr
|
||||||
|
2e 73 68 73 74 72 74 61 62 00 # .shstrtab
|
||||||
|
:ELF_shstr__sym
|
||||||
|
2e 73 79 6d 74 61 62 00 # .symtab
|
||||||
|
:ELF_shstr__str
|
||||||
|
2e 73 74 72 74 61 62 00 # .strtab
|
||||||
|
|
||||||
|
# @d0
|
||||||
|
|
||||||
|
:ELF_section_headers
|
||||||
|
00 00 00 00 # sh_name
|
||||||
|
00 00 00 00 # sh_type
|
||||||
|
00 00 00 00 # sh_flags
|
||||||
|
00 00 00 00 # sh_addr
|
||||||
|
00 00 00 00 # sh_offset
|
||||||
|
00 00 00 00 # sh_length
|
||||||
|
00 00 00 00 # sh_link
|
||||||
|
00 00 00 00 # sh_info
|
||||||
|
01 00 00 00 # sh_1?
|
||||||
|
00 00 00 00 # sh_entsize
|
||||||
|
|
||||||
|
## FIXME: M0 for calculations?
|
||||||
|
:ELF_section_header_text
|
||||||
|
%ELF_shstr__text>ELF_shstr # sh_name
|
||||||
|
01 00 00 00 # sh_type = SHT_PROGBITS = 1
|
||||||
|
06 00 00 00 # sh_flags = SHF-ALLOC|SHF-EXEC =2 | 4 = 6
|
||||||
|
&ELF_text # sh_addr
|
||||||
|
%ELF_text>ELF_base # sh_offset
|
||||||
|
%ELF_data>ELF_text # sh_length
|
||||||
|
00 00 00 00 # sh_link
|
||||||
|
00 00 00 00 # sh_info
|
||||||
|
01 00 00 00 # sh_1?
|
||||||
|
00 00 00 00 # sh_entsize
|
||||||
|
|
||||||
|
:ELF_section_header_data
|
||||||
|
%ELF_shstr__data>ELF_shstr # sh_name
|
||||||
|
01 00 00 00 # sh_type = SHT_PROGBITS = 1
|
||||||
|
03 00 00 00 # sh_flags = SHF-WRITE|SHF-ALLOC = 1 | 2 = 3
|
||||||
|
&ELF_data # sh_addr
|
||||||
|
%ELF_data>ELF_base # sh_offset
|
||||||
|
%ELF_sym>ELF_data # sh_length
|
||||||
|
00 00 00 00 # sh_link
|
||||||
|
00 00 00 00 # sh_info
|
||||||
|
01 00 00 00 # sh_1?
|
||||||
|
00 00 00 00 # sh_entsize
|
||||||
|
|
||||||
|
:ELF_section_header_comment
|
||||||
|
%ELF_shstr__comment>ELF_shstr # sh_name
|
||||||
|
01 00 00 00 # sh_type = SHT_PROGBITS = 1
|
||||||
|
00 00 00 00 # sh_flags
|
||||||
|
&ELF_comment # sh_addr
|
||||||
|
%ELF_comment>ELF_base # sh_offset
|
||||||
|
%ELF_shstr>ELF_comment # sh_length
|
||||||
|
00 00 00 00 # sh_link
|
||||||
|
00 00 00 00 # sh_info
|
||||||
|
01 00 00 00 # sh_1?
|
||||||
|
00 00 00 00 # sh_entsize
|
||||||
|
|
||||||
|
:ELF_section_header_shstr
|
||||||
|
%ELF_shstr__shstr>ELF_shstr # sh_name
|
||||||
|
03 00 00 00 # sh_type: str-sht-strtab
|
||||||
|
00 00 00 00 # sh_flags
|
||||||
|
&ELF_shstr # sh_addr
|
||||||
|
%ELF_shstr>ELF_base # sh_offset
|
||||||
|
%ELF_section_headers>ELF_shstr # sh_length
|
||||||
|
00 00 00 00 # sh_link
|
||||||
|
00 00 00 00 # sh_info
|
||||||
|
01 00 00 00 # sh_1?
|
||||||
|
00 00 00 00 # sh_entsize
|
||||||
|
|
||||||
|
:ELF_section_header_sym
|
||||||
|
%ELF_shstr__sym>ELF_shstr # sh_name
|
||||||
|
02 00 00 00 # sh_type: str-sht-symtab
|
||||||
|
00 00 00 00 # sh_flags
|
||||||
|
&ELF_sym # sh_addr
|
||||||
|
%ELF_sym>ELF_base # sh_offset
|
||||||
|
%ELF_end>ELF_sym # sh_length
|
||||||
|
06 00 00 00 # sh_link:6
|
||||||
|
00 00 00 00 # sh_info
|
||||||
|
01 00 00 00 # sh_1?
|
||||||
|
10 00 00 00 # sh_entsize
|
||||||
|
|
||||||
|
:ELF_section_header_str
|
||||||
|
%ELF_shstr__str>ELF_shstr # sh_name
|
||||||
|
03 00 00 00 # sh_type: str-sht-strtab
|
||||||
|
00 00 00 00 # sh_flags
|
||||||
|
&ELF_str # sh_addr
|
||||||
|
%ELF_str>ELF_base # sh_offset
|
||||||
|
%ELF_sym>ELF_str # sh_length
|
||||||
|
00 00 00 00 # sh_link
|
||||||
|
00 00 00 00 # sh_info
|
||||||
|
01 00 00 00 # sh_1?
|
||||||
|
00 00 00 00 # sh_entsize
|
||||||
|
|
||||||
|
# @1e8
|
||||||
|
00 00 00 00 # align
|
||||||
|
00 00 00 00
|
||||||
|
|
||||||
|
# @1f0
|
||||||
|
|
||||||
|
00 00 00 00 # align
|
||||||
|
00 00 00 00
|
||||||
|
00 00 00 00
|
||||||
|
00 00 00 00
|
||||||
|
|
||||||
|
# @200
|
||||||
|
:ELF_text
|
||||||
Loading…
Reference in a new issue