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1a8aaf91 | 1 | /* Software floating-point exception handling emulation. |
56f669b4 | 2 | Copyright (C) 2002, 2004 Free Software Foundation, Inc. |
1a8aaf91 UD |
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 | |
17 | License along with the GNU C Library; if not, write to the Free | |
18 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
19 | 02111-1307 USA. */ | |
20 | ||
21 | #include <signal.h> | |
22 | #include "soft-fp.h" | |
23 | #include "soft-supp.h" | |
24 | ||
25 | /* Global to store sticky exceptions. */ | |
56f669b4 RM |
26 | int __sim_exceptions __attribute__ ((nocommon)); |
27 | libc_hidden_data_def (__sim_exceptions); | |
1a8aaf91 UD |
28 | |
29 | /* By default, no exceptions should trap. */ | |
30 | int __sim_disabled_exceptions = 0xffffffff; | |
56f669b4 | 31 | libc_hidden_data_def (__sim_disabled_exceptions); |
1a8aaf91 | 32 | |
56f669b4 RM |
33 | int __sim_round_mode __attribute__ ((nocommon)); |
34 | libc_hidden_data_def (__sim_round_mode); | |
1a8aaf91 UD |
35 | |
36 | void | |
37 | __simulate_exceptions (int x) | |
38 | { | |
39 | __sim_exceptions |= x; | |
40 | if (x == 0 || __sim_disabled_exceptions & x) | |
41 | /* Ignore exception. */ | |
42 | ; | |
43 | else | |
44 | raise (SIGFPE); | |
45 | } |