1 files changed, 51 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/powerpc/fe_nomask.c b/sysdeps/unix/sysv/linux/powerpc/fe_nomask.c
new file mode 100644
index 0000000000..ceed2454f1
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/powerpc/fe_nomask.c
@@ -0,0 +1,51 @@
+/* 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;
+}