projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| a5544970 | 1 | /* Copyright (C) 2016-2019 Free Software Foundation, Inc. |
| a71c0334 MM |
2 | |
| 3 | This file is free software; you can redistribute it and/or modify it | |
| 4 | under the terms of the GNU General Public License as published by the | |
| 5 | Free Software Foundation; either version 3, or (at your option) any | |
| 6 | later version. | |
| 7 | ||
| 8 | This file is distributed in the hope that it will be useful, but | |
| 9 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 10 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 11 | General Public License for more details. | |
| 12 | ||
| 13 | Under Section 7 of GPL version 3, you are granted additional | |
| 14 | permissions described in the GCC Runtime Library Exception, version | |
| 15 | 3.1, as published by the Free Software Foundation. | |
| 16 | ||
| 17 | You should have received a copy of the GNU General Public License and | |
| 18 | a copy of the GCC Runtime Library Exception along with this program; | |
| 19 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
| 20 | <http://www.gnu.org/licenses/>. */ | |
| 21 | ||
| 22 | #include "sfp-machine.h" | |
| 23 | ||
| 24 | /* Only provide exception support if we have hardware floating point and we can | |
| 25 | execute the mtfsf instruction. This would only be true if we are using the | |
| 26 | emulation routines for IEEE 128-bit floating point on pre-ISA 3.0 machines | |
| 27 | without the IEEE 128-bit floating point support. */ | |
| 28 | ||
| 29 | #ifndef __NO_FPRS__ | |
| 30 | ||
| 31 | void | |
| 32 | __sfp_handle_exceptions (int _fex) | |
| 33 | { | |
| 34 | const double fp_max = __DBL_MAX__; | |
| 35 | const double fp_min = __DBL_MIN__; | |
| 36 | const double fp_zero = (double) 0.0; | |
| 37 | const double fp_one = 1.0; | |
| 38 | double tmp; | |
| 39 | ||
| 40 | if (_fex & FP_EX_INVALID) | |
| 41 | { | |
| 42 | __asm__ __volatile__ ("fdiv %0, %1, %1" | |
| 43 | : "=f" (tmp) | |
| 44 | : "f" (fp_zero)); | |
| 45 | } | |
| 46 | if (_fex & FP_EX_DIVZERO) | |
| 47 | { | |
| 48 | __asm__ __volatile__ ("fdiv %0, %1, %2" | |
| 49 | : "=f" (tmp) | |
| 50 | : "f" (fp_one), "f" (fp_zero)); | |
| 51 | } | |
| 52 | if (_fex & FP_EX_OVERFLOW) | |
| 53 | { | |
| 54 | __asm__ __volatile__ ("fadd %0, %1, %1" | |
| 55 | : "=f" (tmp) | |
| 56 | : "f" (fp_max)); | |
| 57 | } | |
| 58 | if (_fex & FP_EX_UNDERFLOW) | |
| 59 | { | |
| 60 | __asm__ __volatile__ ("fmul %0, %1, %1" | |
| 61 | : "=f" (tmp) | |
| 62 | : "f" (fp_min)); | |
| 63 | } | |
| 64 | if (_fex & FP_EX_INEXACT) | |
| 65 | { | |
| 66 | __asm__ __volatile__ ("fsub %0, %1, %2" | |
| 67 | : "=f" (tmp) | |
| 68 | : "f" (fp_max), "f" (fp_one)); | |
| 69 | } | |
| 70 | } | |
| 71 | ||
| 72 | #endif /* !__NO_FPRS__ */ |