| /* Install given floating-point control modes. e500 version. |
| Copyright (C) 2016-2018 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/>. */ |
| |
| #include <fenv_libc.h> |
| #include <sysdep.h> |
| #include <sys/prctl.h> |
| |
| #define SPEFSCR_STATUS 0xff3eff00 |
| |
| int |
| fesetmode (const femode_t *modep) |
| { |
| fenv_union_t u; |
| INTERNAL_SYSCALL_DECL (err); |
| int r; |
| |
| u.fenv = *modep; |
| unsigned int spefscr = fegetenv_register (); |
| spefscr = (spefscr & SPEFSCR_STATUS) | (u.l[1] & ~SPEFSCR_STATUS); |
| |
| fesetenv_register (spefscr); |
| r = INTERNAL_SYSCALL (prctl, err, 2, PR_SET_FPEXC, |
| u.l[0] | PR_FP_EXC_SW_ENABLE); |
| if (INTERNAL_SYSCALL_ERROR_P (r, err)) |
| return -1; |
| |
| return 0; |
| } |
