sysdeps/powerpc/longjmp.c

   1 /* Copyright (C) 1991,92,94,95,97,98,2000,2002,2004
   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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 /* Versioned copy of sysdeps/generic/longjmp.c modified for AltiVec support. */
  21
  22 #include  <shlib-compat.h>
  23 #include <stddef.h>
  24 #include <setjmp.h>
  25 #include <signal.h>
  26
  27 extern void __vmx__longjmp (__jmp_buf __env, int __val)
  28      __attribute__ ((noreturn));
  29 extern void __vmx__libc_longjmp (sigjmp_buf env, int val)
  30      __attribute__ ((noreturn));
  31 libc_hidden_proto (__vmx__libc_longjmp)
  32
  33 /* Set the signal mask to the one specified in ENV, and jump
  34    to the position specified in ENV, causing the setjmp
  35    call there to return VAL, or 1 if VAL is 0.  */
  36 void
  37 __vmx__libc_siglongjmp (sigjmp_buf env, int val)
  38 {
  39   /* Perform any cleanups needed by the frames being unwound.  */
  40   _longjmp_unwind (env, val);
  41
  42   if (env[0].__mask_was_saved)
  43     /* Restore the saved signal mask.  */
  44     (void) __sigprocmask (SIG_SETMASK, &env[0].__saved_mask,
  45                           (sigset_t *) NULL);
  46
  47   /* Call the machine-dependent function to restore machine state.  */
  48   __vmx__longjmp (env[0].__jmpbuf, val ?: 1);
  49 }
  50
  51 strong_alias (__vmx__libc_siglongjmp, __vmx__libc_longjmp)
  52 libc_hidden_def (__vmx__libc_longjmp)
  53 weak_alias (__vmx__libc_siglongjmp, __vmx_longjmp)
  54 weak_alias (__vmx__libc_siglongjmp, __vmxlongjmp)
  55 weak_alias (__vmx__libc_siglongjmp, __vmxsiglongjmp)
  56
  57
  58 default_symbol_version (__vmx__libc_longjmp, __libc_longjmp, GLIBC_PRIVATE);
  59 default_symbol_version (__vmx__libc_siglongjmp, __libc_siglongjmp, GLIBC_PRIVATE);
  60 default_symbol_version (__vmx_longjmp, _longjmp, GLIBC_2.3.4);
  61 default_symbol_version (__vmxlongjmp, longjmp, GLIBC_2.3.4);
  62 default_symbol_version (__vmxsiglongjmp, siglongjmp, GLIBC_2.3.4);