1  /* Copyright (C) 1992-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  /* Copy of sysdeps/generic/sigjmp.c modified for backward compatibility
      19     with old non AltiVec/VMX setjmp.  */
      20  
      21  #include <bits/wordsize.h>
      22  #include <shlib-compat.h>
      23  #if IS_IN (libc) && defined SHARED
      24  # if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3_4)
      25  #  include <stddef.h>
      26  #  include <novmxsetjmp.h>
      27  #  include <signal.h>
      28  
      29  /* This function is called by the `sigsetjmp' macro
      30     before doing a `__setjmp' on ENV[0].__jmpbuf.
      31     Always return zero.  */
      32  
      33  int
      34  __novmx__sigjmp_save (__novmx__sigjmp_buf env, int savemask)
      35  {
      36    env[0].__mask_was_saved = (savemask
      37  			     && __sigprocmask (SIG_BLOCK, (sigset_t *) NULL,
      38  					       &env[0].__saved_mask) == 0);
      39  
      40    return 0;
      41  }
      42  
      43  # endif /* SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3_4) */
      44  #endif /* IS_IN (libc) && SHARED  */