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  /* Versioned copy of sysdeps/generic/longjmp.c modified for AltiVec support. */
      19  
      20  #include  <shlib-compat.h>
      21  #include <stddef.h>
      22  #include <setjmp.h>
      23  #include <signal.h>
      24  
      25  extern void __vmx__longjmp (__jmp_buf __env, int __val)
      26       __attribute__ ((noreturn));
      27  extern void __vmx__libc_longjmp (sigjmp_buf env, int val)
      28       __attribute__ ((noreturn));
      29  libc_hidden_proto (__vmx__libc_longjmp)
      30  
      31  /* Set the signal mask to the one specified in ENV, and jump
      32     to the position specified in ENV, causing the setjmp
      33     call there to return VAL, or 1 if VAL is 0.  */
      34  void
      35  __vmx__libc_siglongjmp (sigjmp_buf env, int val)
      36  {
      37    /* Perform any cleanups needed by the frames being unwound.  */
      38    _longjmp_unwind (env, val);
      39  
      40    if (env[0].__mask_was_saved)
      41      /* Restore the saved signal mask.  */
      42      (void) __sigprocmask (SIG_SETMASK, &env[0].__saved_mask,
      43  			  (sigset_t *) NULL);
      44  
      45    /* Call the machine-dependent function to restore machine state.  */
      46    __vmx__longjmp (env[0].__jmpbuf, val ?: 1);
      47  }
      48  
      49  strong_alias (__vmx__libc_siglongjmp, __vmx__libc_longjmp)
      50  libc_hidden_def (__vmx__libc_longjmp)
      51  
      52  strong_alias (__vmx__libc_longjmp, __libc_longjmp)
      53  strong_alias (__vmx__libc_siglongjmp, __libc_siglongjmp)
      54  versioned_symbol (libc, __vmx__libc_siglongjmp, _longjmp, GLIBC_2_3_4);
      55  versioned_symbol (libc, __vmx__libc_siglongjmp, longjmp, GLIBC_2_3_4);
      56  versioned_symbol (libc, __vmx__libc_siglongjmp, siglongjmp, GLIBC_2_3_4);