From e64ac02c24b43659048622714afdc92fedf561fa Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Sun, 1 Jul 2012 13:06:41 +0000 Subject: Move all files into ports/ subdirectory in preparation for merge with glibc --- ports/sysdeps/m68k/fpu/feholdexcpt.c | 45 ++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 ports/sysdeps/m68k/fpu/feholdexcpt.c (limited to 'ports/sysdeps/m68k/fpu/feholdexcpt.c') diff --git a/ports/sysdeps/m68k/fpu/feholdexcpt.c b/ports/sysdeps/m68k/fpu/feholdexcpt.c new file mode 100644 index 0000000000..c58de5b972 --- /dev/null +++ b/ports/sysdeps/m68k/fpu/feholdexcpt.c @@ -0,0 +1,45 @@ +/* Store current floating-point environment and clear exceptions. + Copyright (C) 1997, 1999 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Andreas Schwab + + 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 + . */ + +#include + +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); -- cgit v1.2.3