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authorGeoff Keating <geoffk@cygnus.com>2000-08-28 05:59:48 +0000
committerGeoff Keating <geoffk@cygnus.com>2000-08-28 05:59:48 +0000
commite4df97b85c03a5058cf93df74d336d38d506484b (patch)
treec7fadd5179f3a7bfb185806a43de783f88ad0fff /sysdeps/unix/sysv/linux/powerpc
parentcf365734e59f708b1610815196ee2303174308cf (diff)
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* 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. 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.
Diffstat (limited to 'sysdeps/unix/sysv/linux/powerpc')
-rw-r--r--sysdeps/unix/sysv/linux/powerpc/fe_nomask.c51
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;
+}