From e4df97b85c03a5058cf93df74d336d38d506484b Mon Sep 17 00:00:00 2001 From: Geoff Keating Date: Mon, 28 Aug 2000 05:59:48 +0000 Subject: * 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 * 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. --- sysdeps/unix/sysv/linux/powerpc/fe_nomask.c | 51 +++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 sysdeps/unix/sysv/linux/powerpc/fe_nomask.c (limited to 'sysdeps/unix/sysv') 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 +#include +#include +#include + +/* 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; +} -- cgit 1.4.1