| /* Internal libc stuff for floating point environment routines. e500 version. |
| Copyright (C) 2004-2014 Free Software Foundation, Inc. |
| 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 _FENV_LIBC_H |
| #define _FENV_LIBC_H 1 |
| |
| #include <fenv.h> |
| |
| /* ldbl-128ibm code uses __fegetround. */ |
| #define __fegetround() fegetround () |
| |
| int __feraiseexcept_spe (int); |
| libm_hidden_proto (__feraiseexcept_spe) |
| |
| int __feraiseexcept_soft (int); |
| libc_hidden_proto (__feraiseexcept_soft) |
| |
| int __fexcepts_to_spe (int); |
| libm_hidden_proto (__fexcepts_to_spe) |
| |
| int __fexcepts_from_spe (int); |
| libm_hidden_proto (__fexcepts_from_spe) |
| |
| int __fexcepts_to_prctl (int); |
| libm_hidden_proto (__fexcepts_to_prctl) |
| |
| int __fexcepts_from_prctl (int); |
| libm_hidden_proto (__fexcepts_from_prctl) |
| |
| void __fe_note_change (void); |
| libm_hidden_proto (__fe_note_change) |
| |
| /* Equivalent to fegetenv, but returns an unsigned int instead of |
| taking a pointer. */ |
| #define fegetenv_register() \ |
| ({ unsigned int fscr; asm volatile ("mfspefscr %0" : "=r" (fscr)); fscr; }) |
| |
| /* Equivalent to fesetenv, but takes an unsigned int instead of a |
| pointer. */ |
| #define fesetenv_register(fscr) \ |
| ({ asm volatile ("mtspefscr %0" : : "r" (fscr)); }) |
| |
| typedef union |
| { |
| fenv_t fenv; |
| unsigned int l[2]; |
| } fenv_union_t; |
| |
| /* Definitions of all the SPEFSCR bit numbers. */ |
| enum { |
| SPEFSCR_SOVH = 0x80000000, |
| SPEFSCR_OVH = 0x40000000, |
| SPEFSCR_FGH = 0x20000000, |
| SPEFSCR_FXH = 0x10000000, |
| SPEFSCR_FINVH = 0x08000000, |
| SPEFSCR_FDBZH = 0x04000000, |
| SPEFSCR_FUNFH = 0x02000000, |
| SPEFSCR_FOVFH = 0x01000000, |
| /* 2 unused bits. */ |
| SPEFSCR_FINXS = 0x00200000, |
| SPEFSCR_FINVS = 0x00100000, |
| SPEFSCR_FDBZS = 0x00080000, |
| SPEFSCR_FUNFS = 0x00040000, |
| SPEFSCR_FOVFS = 0x00020000, |
| /* Combination of the exception bits. */ |
| SPEFSCR_ALL_EXCEPT = 0x003e0000, |
| SPEFSCR_MODE = 0x00010000, |
| SPEFSCR_SOV = 0x00008000, |
| SPEFSCR_OV = 0x00004000, |
| SPEFSCR_FG = 0x00002000, |
| SPEFSCR_FX = 0x00001000, |
| SPEFSCR_FINV = 0x00000800, |
| SPEFSCR_FDBZ = 0x00000400, |
| SPEFSCR_FUNF = 0x00000200, |
| SPEFSCR_FOVF = 0x00000100, |
| /* 1 unused bit. */ |
| SPEFSCR_FINXE = 0x00000040, |
| SPEFSCR_FINVE = 0x00000020, |
| SPEFSCR_FDBZE = 0x00000010, |
| SPEFSCR_FUNFE = 0x00000008, |
| SPEFSCR_FOVFE = 0x00000004, |
| /* Combination of the exception trap enable bits. */ |
| SPEFSCR_ALL_EXCEPT_ENABLE = 0x0000007c, |
| SPEFSCR_FRMC = 0x00000003 |
| }; |
| |
| #endif /* fenv_libc.h */ |
