projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 10fdbe1a | 1 | /* Software floating-point exception handling emulation. |
| bfff8b1b | 2 | Copyright (C) 2002-2017 Free Software Foundation, Inc. |
| 10fdbe1a RM |
3 | Contributed by Aldy Hernandez <aldyh@redhat.com>, 2002. |
| 4 | This file is part of the GNU C Library. | |
| 5 | ||
| 6 | The GNU C Library is free software; you can redistribute it and/or | |
| 7 | modify it under the terms of the GNU Lesser General Public | |
| 8 | License as published by the Free Software Foundation; either | |
| 9 | version 2.1 of the License, or (at your option) any later version. | |
| 10 | ||
| 11 | The GNU C Library is distributed in the hope that it will be useful, | |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 | Lesser General Public License for more details. | |
| 15 | ||
| 16 | You should have received a copy of the GNU Lesser General Public | |
| ab84e3ff PE |
17 | License along with the GNU C Library. If not, see |
| 18 | <http://www.gnu.org/licenses/>. */ | |
| 10fdbe1a RM |
19 | |
| 20 | #include <signal.h> | |
| 21 | #include "soft-fp.h" | |
| 22 | #include "soft-supp.h" | |
| 23 | ||
| 73c1ce4f JM |
24 | /* Thread-local to store sticky exceptions. */ |
| 25 | __thread int __sim_exceptions_thread __attribute__ ((nocommon)); | |
| 26 | libc_hidden_data_def (__sim_exceptions_thread); | |
| 10fdbe1a RM |
27 | |
| 28 | /* By default, no exceptions should trap. */ | |
| 73c1ce4f JM |
29 | __thread int __sim_disabled_exceptions_thread = 0xffffffff; |
| 30 | libc_hidden_data_def (__sim_disabled_exceptions_thread); | |
| 31 | ||
| 32 | __thread int __sim_round_mode_thread __attribute__ ((nocommon)); | |
| 33 | libc_hidden_data_def (__sim_round_mode_thread); | |
| 34 | ||
| 35 | #if SIM_GLOBAL_COMPAT | |
| 36 | int __sim_exceptions_global __attribute__ ((nocommon)); | |
| 37 | libc_hidden_data_def (__sim_exceptions_global); | |
| 38 | SIM_COMPAT_SYMBOL (__sim_exceptions_global, __sim_exceptions); | |
| 39 | ||
| 40 | int __sim_disabled_exceptions_global = 0xffffffff; | |
| 41 | libc_hidden_data_def (__sim_disabled_exceptions_global); | |
| 42 | SIM_COMPAT_SYMBOL (__sim_disabled_exceptions_global, | |
| 43 | __sim_disabled_exceptions); | |
| 10fdbe1a | 44 | |
| 73c1ce4f JM |
45 | int __sim_round_mode_global __attribute__ ((nocommon)); |
| 46 | libc_hidden_data_def (__sim_round_mode_global); | |
| 47 | SIM_COMPAT_SYMBOL (__sim_round_mode_global, __sim_round_mode); | |
| 48 | #endif | |
| 10fdbe1a RM |
49 | |
| 50 | void | |
| 51 | __simulate_exceptions (int x) | |
| 52 | { | |
| 73c1ce4f JM |
53 | __sim_exceptions_thread |= x; |
| 54 | SIM_SET_GLOBAL (__sim_exceptions_global, __sim_exceptions_thread); | |
| 55 | if (x & ~__sim_disabled_exceptions_thread) | |
| 10fdbe1a RM |
56 | raise (SIGFPE); |
| 57 | } |