mes/lib/linux/x86-mes-gcc/crt1.c

56 lines
1.6 KiB
C

/* -*-comment-start: "//";comment-end:""-*-
* GNU Mes --- Maxwell Equations of Software
* Copyright © 2017,2018,2019,2023 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
* Copyright © 2021 Paul Dersey <pdersey@gmail.com>
*
* 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[]);
// *INDENT-OFF*
void
_start ()
{
asm (
"mov %ebp,%eax\n\t"
"add $4,%eax\n\t"
"mov (%eax),%eax\n\t"
"add $3,%eax\n\t"
"shl $2,%eax\n\t"
"add %ebp,%eax\n\t"
"push %eax\n\t"
"mov %ebp,%eax\n\t"
"add $8,%eax\n\t"
"push %eax\n\t"
"mov %ebp,%eax\n\t"
"add $4,%eax\n\t"
"mov (%eax),%eax\n\t"
"push %eax\n\t"
"call __init_io\n\t"
"call main\n\t"
"mov %eax,%ebx\n\t"
"mov $1,%eax\n\t"
"int $0x80\n\t"
"hlt \n\t"
);
}