| /* Software floating-point exception handling emulation. |
| Copyright (C) 2002-2014 Free Software Foundation, Inc. |
| Contributed by Aldy Hernandez <aldyh@redhat.com>, 2002. |
| 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 <signal.h> |
| #include "soft-fp.h" |
| #include "soft-supp.h" |
| |
| /* Thread-local to store sticky exceptions. */ |
| __thread int __sim_exceptions_thread __attribute__ ((nocommon)); |
| libc_hidden_data_def (__sim_exceptions_thread); |
| |
| /* By default, no exceptions should trap. */ |
| __thread int __sim_disabled_exceptions_thread = 0xffffffff; |
| libc_hidden_data_def (__sim_disabled_exceptions_thread); |
| |
| __thread int __sim_round_mode_thread __attribute__ ((nocommon)); |
| libc_hidden_data_def (__sim_round_mode_thread); |
| |
| #if SIM_GLOBAL_COMPAT |
| int __sim_exceptions_global __attribute__ ((nocommon)); |
| libc_hidden_data_def (__sim_exceptions_global); |
| SIM_COMPAT_SYMBOL (__sim_exceptions_global, __sim_exceptions); |
| |
| int __sim_disabled_exceptions_global = 0xffffffff; |
| libc_hidden_data_def (__sim_disabled_exceptions_global); |
| SIM_COMPAT_SYMBOL (__sim_disabled_exceptions_global, |
| __sim_disabled_exceptions); |
| |
| int __sim_round_mode_global __attribute__ ((nocommon)); |
| libc_hidden_data_def (__sim_round_mode_global); |
| SIM_COMPAT_SYMBOL (__sim_round_mode_global, __sim_round_mode); |
| #endif |
| |
| void |
| __simulate_exceptions (int x) |
| { |
| __sim_exceptions_thread |= x; |
| SIM_SET_GLOBAL (__sim_exceptions_global, __sim_exceptions_thread); |
| if (x & ~__sim_disabled_exceptions_thread) |
| raise (SIGFPE); |
| } |
