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