blob: e16703323d689f0c760b4d7f8cbe18c456498f94 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
/* Software floating-point exception handling emulation.
Copyright (C) 2002-2013 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"
/* FIXME: these variables should be thread specific (see bugzilla bug
15483) and ideally preserved across signal handlers, like hardware
FP status words, but the latter is quite difficult to accomplish in
userland. */
/* Global to store sticky exceptions. */
int __sim_exceptions __attribute__ ((nocommon));
libc_hidden_data_def (__sim_exceptions);
/* By default, no exceptions should trap. */
int __sim_disabled_exceptions = 0xffffffff;
libc_hidden_data_def (__sim_disabled_exceptions);
int __sim_round_mode __attribute__ ((nocommon));
libc_hidden_data_def (__sim_round_mode);
void
__simulate_exceptions (int x)
{
__sim_exceptions |= x;
if (x & ~__sim_disabled_exceptions)
raise (SIGFPE);
}
|
