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/* Software floating-point exception handling emulation.
Copyright (C) 2002-2019 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
<https://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_tls_def (__sim_exceptions_thread);
/* By default, no exceptions should trap. */
__thread int __sim_disabled_exceptions_thread = 0xffffffff;
libc_hidden_tls_def (__sim_disabled_exceptions_thread);
__thread int __sim_round_mode_thread __attribute__ ((nocommon));
libc_hidden_tls_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);
}
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