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authorCarlos O'Donell <carlos@systemhalted.org>2014-04-29 03:08:48 -0400
committerCarlos O'Donell <carlos@systemhalted.org>2014-04-29 04:20:39 -0400
commit5abebba403181de898bbea4ee1bcce5f088c663b (patch)
tree0c4a8eac85e1f2db87621b524bfcbdeb24c2c8f9 /sysdeps/hppa/fpu/fedisblxcpt.c
parent4e4a58f4ee45cea6f3083af8f12d3834bb999555 (diff)
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Relocate hppa from ports to libc.
Diffstat (limited to 'sysdeps/hppa/fpu/fedisblxcpt.c')
-rw-r--r--sysdeps/hppa/fpu/fedisblxcpt.c37
1 files changed, 37 insertions, 0 deletions
diff --git a/sysdeps/hppa/fpu/fedisblxcpt.c b/sysdeps/hppa/fpu/fedisblxcpt.c
new file mode 100644
index 0000000000..892c78c987
--- /dev/null
+++ b/sysdeps/hppa/fpu/fedisblxcpt.c
@@ -0,0 +1,37 @@
+/* Disable floating-point exceptions.
+   Copyright (C) 2000-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by David Huggins-Daines <dhd@debian.org>, 2000
+
+   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
+   <http://www.gnu.org/licenses/>.  */
+
+#include <fenv.h>
+
+int
+fedisableexcept (int excepts)
+{
+  union { unsigned long long l; unsigned int sw[2]; } s;
+  unsigned int old_exc;
+
+  /* Get the current status word. */
+  __asm__ ("fstd %%fr0,0(%1)" : "=m" (s.l) : "r" (&s.l) : "%r0");
+
+  old_exc = s.sw[0] & FE_ALL_EXCEPT;
+
+  s.sw[0] &= ~(excepts & FE_ALL_EXCEPT);
+  __asm__ ("fldd 0(%0),%%fr0" : : "r" (&s.l), "m" (s.l) : "%r0");
+
+  return old_exc;
+}