ARC: hardware floating point support

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>

1 files changed, 40 insertions, 0 deletions

diff --git a/sysdeps/arc/fpu/fesetround.c b/sysdeps/arc/fpu/fesetround.c
new file mode 100644
index 0000000000..701c0b2dcb
--- /dev/null
+++ b/sysdeps/arc/fpu/fesetround.c
@@ -0,0 +1,40 @@
+/* Set current rounding direction.
+   Copyright (C) 2020 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
+   <https://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+#include <fenv_private.h>
+
+int
+__fesetround (int round)
+{
+  unsigned int fpcr;
+
+  _FPU_GETCW (fpcr);
+
+  if (((fpcr >> __FPU_RND_SHIFT) & __FPU_RND_MASK) != round)
+    {
+      fpcr &= ~(__FPU_RND_MASK << __FPU_RND_SHIFT);
+      fpcr |= (round & __FPU_RND_MASK) << __FPU_RND_SHIFT;
+      _FPU_SETCW (fpcr);
+    }
+
+  return 0;
+}
+libm_hidden_def (__fesetround)
+weak_alias (__fesetround, fesetround)
+libm_hidden_weak (fesetround)