57 lines
2.0 KiB
C
57 lines
2.0 KiB
C
/* Software floating-point exception handling emulation.
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Copyright (C) 2002-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<https://www.gnu.org/licenses/>. */
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#include <signal.h>
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#include "soft-fp.h"
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#include "soft-supp.h"
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/* Thread-local to store sticky exceptions. */
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__thread int __sim_exceptions_thread;
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libc_hidden_tls_def (__sim_exceptions_thread);
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/* By default, no exceptions should trap. */
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__thread int __sim_disabled_exceptions_thread = 0xffffffff;
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libc_hidden_tls_def (__sim_disabled_exceptions_thread);
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__thread int __sim_round_mode_thread;
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libc_hidden_tls_def (__sim_round_mode_thread);
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#if SIM_GLOBAL_COMPAT
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int __sim_exceptions_global;
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libc_hidden_data_def (__sim_exceptions_global);
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SIM_COMPAT_SYMBOL (__sim_exceptions_global, __sim_exceptions);
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int __sim_disabled_exceptions_global = 0xffffffff;
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libc_hidden_data_def (__sim_disabled_exceptions_global);
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SIM_COMPAT_SYMBOL (__sim_disabled_exceptions_global,
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__sim_disabled_exceptions);
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int __sim_round_mode_global;
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libc_hidden_data_def (__sim_round_mode_global);
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SIM_COMPAT_SYMBOL (__sim_round_mode_global, __sim_round_mode);
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#endif
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void
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__simulate_exceptions (int x)
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{
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__sim_exceptions_thread |= x;
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SIM_SET_GLOBAL (__sim_exceptions_global, __sim_exceptions_thread);
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if (x & ~__sim_disabled_exceptions_thread)
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raise (SIGFPE);
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}
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