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Diffstat (limited to 'sysdeps/m68k/fpu/feholdexcpt.c')
-rw-r--r--sysdeps/m68k/fpu/feholdexcpt.c47
1 files changed, 47 insertions, 0 deletions
diff --git a/sysdeps/m68k/fpu/feholdexcpt.c b/sysdeps/m68k/fpu/feholdexcpt.c
new file mode 100644
index 0000000000..db33c94d78
--- /dev/null
+++ b/sysdeps/m68k/fpu/feholdexcpt.c
@@ -0,0 +1,47 @@
+/* Store current floating-point environment and clear exceptions.
+ Copyright (C) 1997-2015 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
+
+ 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
+__feholdexcept (fenv_t *envp)
+{
+ fexcept_t fpcr, fpsr;
+
+ /* Store the environment. */
+#ifdef __mcoldfire__
+ __asm__ ("fmove%.l %/fpcr,%0" : "=dm" (envp->__control_register));
+ __asm__ ("fmove%.l %/fpsr,%0" : "=dm" (envp->__status_register));
+ __asm__ ("fmove%.l %/fpiar,%0" : "=dm" (envp->__instruction_address));
+#else
+ __asm__ ("fmovem%.l %/fpcr/%/fpsr/%/fpiar,%0" : "=m" (*envp));
+#endif
+
+ /* Now clear all exceptions. */
+ fpsr = envp->__status_register & ~FE_ALL_EXCEPT;
+ __asm__ __volatile__ ("fmove%.l %0,%/fpsr" : : "dm" (fpsr));
+ /* And set all exceptions to non-stop. */
+ fpcr = envp->__control_register & ~(FE_ALL_EXCEPT << 6);
+ __asm__ __volatile__ ("fmove%.l %0,%!" : : "dm" (fpcr));
+
+ return 0;
+}
+libm_hidden_def (__feholdexcept)
+weak_alias (__feholdexcept, feholdexcept)
+libm_hidden_weak (feholdexcept)