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-rw-r--r--sysdeps/hppa/fpu/feholdexcpt.c60
1 files changed, 60 insertions, 0 deletions
diff --git a/sysdeps/hppa/fpu/feholdexcpt.c b/sysdeps/hppa/fpu/feholdexcpt.c
new file mode 100644
index 0000000000..10621786eb
--- /dev/null
+++ b/sysdeps/hppa/fpu/feholdexcpt.c
@@ -0,0 +1,60 @@
+/* Store current floating-point environment and clear exceptions.
+ Copyright (C) 2000 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 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 <string.h>
+
+int
+feholdexcept (fenv_t *envp)
+{
+ fenv_t clear;
+
+ /* Store the environment. */
+ {
+ fenv_t * _regs = envp;
+ __asm__ (
+ "fstd %%fr0,0(%2)\n"
+ "fstd,ma %%fr1,8(%2)\n"
+ "fstd,ma %%fr2,8(%2)\n"
+ "fstd %%fr3,0(%2)\n"
+ : "=m" (*_regs), "=r" (_regs) : "1" (_regs));
+ memcpy (&clear, envp, sizeof (clear));
+ }
+
+ /* Now clear all exceptions. */
+ clear.__status_word &= ~(FE_ALL_EXCEPT << 27);
+ memset (clear.__exception, 0, sizeof (clear.__exception));
+
+ /* And set all exceptions to non-stop. */
+ clear.__status_word &= ~FE_ALL_EXCEPT;
+
+ /* Load the new environment. */
+ {
+ fenv_t * _regs = &clear + 1;
+ __asm__ (
+ "fldd,mb -8(%2),%%fr3\n"
+ "fldd,mb -8(%2),%%fr2\n"
+ "fldd,mb -8(%2),%%fr1\n"
+ "fldd -8(%2),%%fr0\n"
+ : "=m" (*_regs), "=r" (_regs) : "1" (_regs));
+ }
+
+ return 0;
+}