sysdeps/powerpc/novmx-longjmp.c

   1 /* Copyright (C) 1991,92,94,95,97,98,2000,2002,2003,2004
   2    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    <http://www.gnu.org/licenses/>.  */
  18
  19 /* Copy of sysdeps/generic/longjmp.c modified for backward compatibility
  20    with old non AltiVec/VMX longjmp.  */
  21
  22 #include <bits/wordsize.h>
  23 #include <shlib-compat.h>
  24 #if defined SHARED && SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3_4)
  25 # include <stddef.h>
  26 # include <novmxsetjmp.h>
  27 # include <signal.h>
  28
  29
  30 /* Set the signal mask to the one specified in ENV, and jump
  31    to the position specified in ENV, causing the setjmp
  32    call there to return VAL, or 1 if VAL is 0.  */
  33 void
  34 __novmx__libc_siglongjmp (__novmx__sigjmp_buf env, int val)
  35 {
  36   /* Perform any cleanups needed by the frames being unwound.  */
  37   _longjmp_unwind (env, val);
  38
  39   if (env[0].__mask_was_saved)
  40     /* Restore the saved signal mask.  */
  41     (void) __sigprocmask (SIG_SETMASK, &env[0].__saved_mask,
  42                           (sigset_t *) NULL);
  43
  44   /* Call the machine-dependent function to restore machine state.  */
  45   __novmx__longjmp (env[0].__jmpbuf, val ?: 1);
  46 }
  47
  48 strong_alias (__novmx__libc_siglongjmp, __novmx__libc_longjmp)
  49 libc_hidden_def (__novmx__libc_longjmp)
  50 weak_alias (__novmx__libc_siglongjmp, __novmx_longjmp)
  51 weak_alias (__novmx__libc_siglongjmp, __novmxlongjmp)
  52 weak_alias (__novmx__libc_siglongjmp, __novmxsiglongjmp)
  53
  54 # if __WORDSIZE == 64
  55 symbol_version (__novmx_longjmp,_longjmp,GLIBC_2.3);
  56 symbol_version (__novmxlongjmp,longjmp,GLIBC_2.3);
  57 symbol_version (__novmxsiglongjmp,siglongjmp,GLIBC_2.3);
  58 # else
  59 symbol_version (__novmx_longjmp,_longjmp,GLIBC_2.0);
  60 symbol_version (__novmxlongjmp,longjmp,GLIBC_2.0);
  61 symbol_version (__novmxsiglongjmp,siglongjmp,GLIBC_2.0);
  62 # endif
  63 #endif /* defined SHARED && SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3_4))  */