1  /* Internal support stuff for complete soft float.
       2     Copyright (C) 2002-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library.  If not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #if defined __NO_FPRS__ && !defined _SOFT_FLOAT
      20  
      21  # include <fenv_libc.h>
      22  
      23  #else
      24  
      25  # include <fenv.h>
      26  
      27  typedef union
      28  {
      29    fenv_t fenv;
      30    unsigned int l[2];
      31  } fenv_union_t;
      32  
      33  #endif
      34  
      35  extern __thread int __sim_exceptions_thread attribute_tls_model_ie;
      36  libc_hidden_tls_proto (__sim_exceptions_thread, tls_model ("initial-exec"));
      37  extern __thread int __sim_disabled_exceptions_thread attribute_tls_model_ie;
      38  libc_hidden_tls_proto (__sim_disabled_exceptions_thread,
      39  		       tls_model ("initial-exec"));
      40  extern __thread int __sim_round_mode_thread attribute_tls_model_ie;
      41  libc_hidden_tls_proto (__sim_round_mode_thread, tls_model ("initial-exec"));
      42  
      43  /* These variables were formerly global, so there are compat symbols
      44     for global versions as well.  */
      45  
      46  #include <shlib-compat.h>
      47  #define SIM_GLOBAL_COMPAT SHLIB_COMPAT (libc, GLIBC_2_3_2, GLIBC_2_19)
      48  #if SIM_GLOBAL_COMPAT
      49  extern int __sim_exceptions_global;
      50  libc_hidden_proto (__sim_exceptions_global);
      51  extern int __sim_disabled_exceptions_global ;
      52  libc_hidden_proto (__sim_disabled_exceptions_global);
      53  extern int __sim_round_mode_global;
      54  libc_hidden_proto (__sim_round_mode_global);
      55  # define SIM_COMPAT_SYMBOL(GLOBAL_NAME, NAME) \
      56    compat_symbol (libc, GLOBAL_NAME, NAME, GLIBC_2_3_2)
      57  # define SIM_SET_GLOBAL(GLOBAL_VAR, THREAD_VAR) ((GLOBAL_VAR) = (THREAD_VAR))
      58  #else
      59  # define SIM_SET_GLOBAL(GLOBAL_VAR, THREAD_VAR) ((void) 0)
      60  #endif
      61  
      62  extern void __simulate_exceptions (int x) attribute_hidden;