--- /dev/null
+/* Install given floating-point environment.
+ Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by David Huggins-Daines <dhd@debian.org>, 2000
+ Based on the m68k version by
+ Andreas Schwab <schwab@suse.de>
+
+ 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>
+
+int
+fesetenv (const fenv_t *envp)
+{
+ fenv_t temp;
+
+ /* Install the environment specified by ENVP. But there are a few
+ values which we do not want to come from the saved environment.
+ Therefore, we get the current environment and replace the values
+ we want to use from the environment specified by the parameter. */
+ {
+ fenv_t * _regs = &temp;
+ __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));
+ }
+
+ temp.__status_word &= ~(FE_ALL_EXCEPT
+ | (FE_ALL_EXCEPT << 27)
+ | FE_DOWNWARD);
+ if (envp == FE_DFL_ENV)
+ ;
+ else if (envp == FE_NOMASK_ENV)
+ temp.__status_word |= FE_ALL_EXCEPT;
+ else
+ temp.__status_word |= (envp->__status_word
+ & (FE_ALL_EXCEPT
+ | FE_DOWNWARD
+ | (FE_ALL_EXCEPT << 27)));
+
+ /* Load the new environment. */
+ {
+ fenv_t * _regs = &temp + 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));
+ }
+
+ /* Success. */
+ return 0;
+}