diff options
Diffstat (limited to 'REORG.TODO/sysdeps/s390/fpu/fpu_control.h')
-rw-r--r-- | REORG.TODO/sysdeps/s390/fpu/fpu_control.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/s390/fpu/fpu_control.h b/REORG.TODO/sysdeps/s390/fpu/fpu_control.h new file mode 100644 index 0000000000..c855b014cb --- /dev/null +++ b/REORG.TODO/sysdeps/s390/fpu/fpu_control.h @@ -0,0 +1,43 @@ +/* FPU control word definitions. Stub version. + Copyright (C) 2000-2017 Free Software Foundation, Inc. + Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com) and + Martin Schwidefsky (schwidefsky@de.ibm.com). + This file is part of the GNU C Library. + + 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/>. */ + +#ifndef _FPU_CONTROL_H +#define _FPU_CONTROL_H + +#include <features.h> + +/* These bits are reserved are not changed. */ +#define _FPU_RESERVED 0x0707FFFC + +/* The fdlibm code requires no interrupts for exceptions. Don't + change the rounding mode, it would break long double I/O! */ +#define _FPU_DEFAULT 0x00000000 /* Default value. */ + +/* Type of the control word. */ +typedef unsigned int fpu_control_t; + +/* Macros for accessing the hardware control word. */ +#define _FPU_GETCW(cw) __asm__ __volatile__ ("efpc %0,0" : "=d" (cw)) +#define _FPU_SETCW(cw) __asm__ __volatile__ ("sfpc %0,0" : : "d" (cw)) + +/* Default control word set at startup. */ +extern fpu_control_t __fpu_control; + +#endif /* _FPU_CONTROL_H */ |