sysdeps/powerpc/novmx-longjmp.c

   1 /* Copyright (C) 1991-2016 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    <http://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))  */