1  /* Copyright (C) 1991-2023 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/longjmp.c modified for backward compatibility
      19     with old non AltiVec/VMX longjmp.  */
      20  
      21  #include <bits/wordsize.h>
      22  #include <shlib-compat.h>
      23  #if defined SHARED && SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3_4)
      24  # include <stddef.h>
      25  # include <novmxsetjmp.h>
      26  # include <signal.h>
      27  
      28  
      29  /* Set the signal mask to the one specified in ENV, and jump
      30     to the position specified in ENV, causing the setjmp
      31     call there to return VAL, or 1 if VAL is 0.  */
      32  void
      33  __novmx__libc_siglongjmp (__novmx__sigjmp_buf env, int val)
      34  {
      35    /* Perform any cleanups needed by the frames being unwound.  */
      36    _longjmp_unwind (env, val);
      37  
      38    if (env[0].__mask_was_saved)
      39      /* Restore the saved signal mask.  */
      40      (void) __sigprocmask (SIG_SETMASK, &env[0].__saved_mask,
      41  			  (sigset_t *) NULL);
      42  
      43    /* Call the machine-dependent function to restore machine state.  */
      44    __novmx__longjmp (env[0].__jmpbuf, val ?: 1);
      45  }
      46  
      47  strong_alias (__novmx__libc_siglongjmp, __novmx__libc_longjmp)
      48  libc_hidden_def (__novmx__libc_longjmp)
      49  weak_alias (__novmx__libc_siglongjmp, __novmx_longjmp)
      50  weak_alias (__novmx__libc_siglongjmp, __novmxlongjmp)
      51  weak_alias (__novmx__libc_siglongjmp, __novmxsiglongjmp)
      52  
      53  compat_symbol (libc, __novmx_longjmp, _longjmp, GLIBC_2_0);
      54  compat_symbol (libc, __novmxlongjmp, longjmp, GLIBC_2_0);
      55  compat_symbol (libc, __novmxsiglongjmp, siglongjmp, GLIBC_2_0);
      56  #endif /* defined SHARED && SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3_4))  */