mes/lib/linux/x86_64-mes/crt1.c
Jan Nieuwenhuizen 3ed82d7010
mescc: Mes C Library: Cleanup includes.
* include/mes/lib-mini.h: Move from include/libmes-mini.h.  Update users.
* include/mes/lib.h: Move from include/libmes.h.  Update users.
2019-05-08 00:25:41 +02:00

80 lines
2.1 KiB
C

/* -*-comment-start: "//";comment-end:""-*-
* GNU Mes --- Maxwell Equations of Software
* Copyright © 2018 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____$i8,%rax !0");
asm ("mov____%rax,0x32 &__stdin");
asm ("mov____$i8,%rax !1");
asm ("mov____%rax,0x32 &__stdout");
asm ("mov____$i8,%rax !2");
asm ("mov____%rax,0x32 &__stderr");
#if 0 //MES_CCAMD64
asm ("add____$i32,%rbp %0x80"); // FIXME: corresponds to x86_64/as.scm function-preamble-fu
#endif
asm ("mov____%rbp,%rax");
asm ("add____$i8,%rax !8");
asm ("mov____(%rax),%rax");
asm ("add____$i8,%rax !0x03");
asm ("shl____$i8,%rax !0x03");
asm ("add____%rbp,%rax");
// FIXME: 64-bit addresses...
asm ("mov____%rax,0x32 &environ");
#if 0 //MES_CCAMD64
asm ("mov____%rax,%rdx"); // amd
#else
asm ("push___%rax"); // bootstrap
#endif
asm ("mov____%rbp,%rax");
asm ("add____$i8,%rax !16");
#if 0 //MES_CCAMD64
asm ("mov____%rax,%rsi"); // amd
#else
asm ("push___%rax"); // bootstrap
#endif
asm ("mov____%rbp,%rax");
asm ("add____$i8,%rax !8");
asm ("mov____(%rax),%rax");
#if 0 //MES_CCAMD64
asm ("mov____%rax,%rdi"); // amd
#else
asm ("push___%rax"); // bootstrap
#endif
main ();
asm ("mov____%rax,%rdi");
asm ("mov____$i32,%rax %0x3c");
asm ("syscall");
asm ("hlt");
}