mes/lib/gcc.c

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2018-06-02 09:41:06 +00:00
/* -*-comment-start: "//";comment-end:""-*-
* Mes --- Maxwell Equations of Software
* Copyright © 2018 Jan (janneke) 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/>.
*/
#include <libmes.h>
#include <stdint.h>
#include <time.h>
#include <sys/times.h>
#include <sys/time.h>
2018-06-02 09:41:06 +00:00
FILE *
freopen (char const *file_name, char const *opentype, FILE *stream)
{
fclose (stream);
return fopen (file_name, opentype);
}
clock_t
times (struct tms *buffer)
{
eputs ("times stub\n");
return 0;
}
unsigned int
sleep (unsigned int seconds)
{
struct timespec requested_time;
struct timespec remaining;
requested_time.tv_sec = seconds;
requested_time.tv_nsec = 0;
return nanosleep (&requested_time, &remaining);
}
// gcc-3.2
double
__divdi3 (double a, double b)
{
eputs ("__divdi3 stub\n");
return ((int)a / (int)b);
}
double
__moddi3 (double a, double b)
{
eputs ("__moddi3 stub\n");
return ((int) a %(int)b);
}
// gcc-3.4
void
unsetenv (char const *name)
{
int length = strlen (name);
char **p = environ;
while (*p)
{
if (!strncmp (name, *p, length) && *(*p + length) == '=')
{
char **q = p;
q[0] = q[1];
while (*q++)
q[0] = q[1];
}
p++;
}
}
// gcc-3.0
int
atexit (void (*function) (void))
{
__call_at_exit = function;
}
unsigned int
alarm (unsigned int seconds)
{
#if !__MESC__
struct itimerval old;
struct itimerval new;
new.it_interval.tv_usec = 0;
new.it_interval.tv_sec = 0;
new.it_value.tv_usec = 0;
new.it_value.tv_sec = (long int) seconds;
if (setitimer (ITIMER_REAL, &new, &old) < 0)
return 0;
return old.it_value.tv_sec;
#endif
}