mes/scaffold/hello.c
Jan Nieuwenhuizen 996c449a81 mescc: Add getenv.
* module/mes/libc-i386.mes (i386:_start): Push environment pointer.
* module/mes/libc.mes (g_environment): New global.
  (_env): New function.
  (_start): Use it to set g_environment.
  (getenv): New function.
* lib/mlibc.c (strncmp): New function.
  (getenv): Implement.
* lib/mstart.c (_start): Set g_environment.
* module/mes/libc.mes (strncmp): New function.
  (libc): Add it.
* scaffold/t.c: (array_ref): Test it.
2017-04-17 02:24:20 +02:00

47 lines
1.2 KiB
C

/* -*-comment-start: "//";comment-end:""-*-
* Mes --- Maxwell Equations of Software
* Copyright © 2016,2017 Jan Nieuwenhuizen <janneke@gnu.org>
*
* This file is part of Mes.
*
* 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.
*
* 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 Mes. If not, see <http://www.gnu.org/licenses/>.
*/
#if __MESC__
char **g_environment;
int g_stdin = 0;
#define assert(x) ((x) ? (void)0 : assert_fail (#x))
#endif
#if !__MESC__
#include "mlibc.c"
#endif
int
main (int argc, char *argv[])
{
puts ("Hi Mes!\n");
#if __MESC_MES__
puts ("MESC.MES\n");
#else
puts ("MESC.GUILE\n");
#endif
if (argc > 1 && !strcmp (argv[1], "--help")) {puts ("argc > 1 && --help\n"); return argc;}
return 42;
}
#if !__MESC__ && !POSIX
#include "mstart.c"
#endif