From 91a1f3fea0d6c5bc304562c313171d8cf765b910 Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Thu, 28 Nov 2013 18:01:41 +0000 Subject: Add powerpc-nofpu/e500 support functions for atomic compound assignment and FLT_ROUNDS. --- .../powerpc32/e500/nofpu/atomic-feupdateenv.c | 46 ++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 sysdeps/powerpc/powerpc32/e500/nofpu/atomic-feupdateenv.c (limited to 'sysdeps/powerpc/powerpc32/e500/nofpu/atomic-feupdateenv.c') diff --git a/sysdeps/powerpc/powerpc32/e500/nofpu/atomic-feupdateenv.c b/sysdeps/powerpc/powerpc32/e500/nofpu/atomic-feupdateenv.c new file mode 100644 index 0000000000..9ae6b45087 --- /dev/null +++ b/sysdeps/powerpc/powerpc32/e500/nofpu/atomic-feupdateenv.c @@ -0,0 +1,46 @@ +/* Install given floating-point environment and raise exceptions for + atomic compound assignment. e500 version. + Copyright (C) 2004-2013 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 Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + . */ + +#include +#include +#include +#include + +void +__atomic_feupdateenv (const fenv_t *envp) +{ + int exc; + fenv_union_t u; + INTERNAL_SYSCALL_DECL (err); + int r; + + /* Save the currently set exceptions. */ + exc = fegetenv_register () & SPEFSCR_ALL_EXCEPT; + + u.fenv = *envp; + + fesetenv_register (u.l[1]); + r = INTERNAL_SYSCALL (prctl, err, 2, PR_SET_FPEXC, + u.l[0] | PR_FP_EXC_SW_ENABLE); + if (INTERNAL_SYSCALL_ERROR_P (r, err)) + abort (); + + /* Raise (if appropriate) saved exceptions. */ + __feraiseexcept_soft (exc); +} -- cgit 1.4.1