mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-12 22:30:12 +00:00
e4df97b85c
* sysdeps/powerpc/fpu/feenablxcpt.c: New file. * sysdeps/powerpc/fpu/fegetexcept.c: New file. * sysdeps/unix/sysv/linux/powerpc/fe_nomask.c: New file. 2000-08-27 Geoff Keating <geoffk@cygnus.com> * sysdeps/powerpc/fpu/fedisblxcpt.c: New file. * sysdeps/powerpc/fpu/feenablxcpt.c: New file. * sysdeps/powerpc/fpu/fegetexcept.c: New file. * sysdeps/unix/sysv/linux/powerpc/fe_nomask.c: New file.
52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
/* Procedure definition for FE_NOMASK_ENV for Linux/ppc.
|
|
Copyright (C) 2000 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <fenv.h>
|
|
#include <errno.h>
|
|
#include <signal.h>
|
|
#include <unistd.h>
|
|
|
|
/* This is rather fiddly under Linux. We don't have direct access,
|
|
and there is no system call, but we can change the bits
|
|
in a signal handler's context... */
|
|
|
|
static struct sigaction oact;
|
|
|
|
static void
|
|
fe_nomask_handler (int signum, struct sigcontext *sc)
|
|
{
|
|
sc->regs->msr |= 0x900ul; /* FE0 | FE1 */
|
|
sigaction (SIGUSR1, &oact, NULL);
|
|
}
|
|
|
|
const fenv_t *
|
|
__fe_nomask_env(void)
|
|
{
|
|
struct sigaction act;
|
|
|
|
act.sa_handler = (sighandler_t) fe_nomask_handler;
|
|
sigemptyset (&act.sa_mask);
|
|
act.sa_flags = 0;
|
|
|
|
sigaction (SIGUSR1, &act, &oact);
|
|
raise (SIGUSR1);
|
|
|
|
return FE_ENABLED_ENV;
|
|
}
|