longjmp.c 2.0 KB

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  1. /* Copyright (C) 1991, 92, 94, 95, 97, 98, 2000 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. The GNU C Library is free software; you can redistribute it and/or
  4. modify it under the terms of the GNU Library General Public License as
  5. published by the Free Software Foundation; either version 2 of the
  6. License, or (at your option) any later version.
  7. The GNU C Library is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  10. Library General Public License for more details.
  11. You should have received a copy of the GNU Library General Public
  12. License along with the GNU C Library; see the file COPYING.LIB. If not,
  13. write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  14. Boston, MA 02111-1307, USA. */
  15. #include <stddef.h>
  16. #include <setjmp.h>
  17. #include <signal.h>
  18. /* Set the signal mask to the one specified in ENV, and jump
  19. to the position specified in ENV, causing the setjmp
  20. call there to return VAL, or 1 if VAL is 0. */
  21. void
  22. __uClibc_siglongjmp (sigjmp_buf env, int val)
  23. {
  24. /* Perform any cleanups needed by the frames being unwound. */
  25. _longjmp_unwind (env, val);
  26. if (env[0].__mask_was_saved)
  27. /* Restore the saved signal mask. */
  28. (void) __sigprocmask (SIG_SETMASK, &env[0].__saved_mask,
  29. (sigset_t *) NULL);
  30. /* Call the machine-dependent function to restore machine state. */
  31. __longjmp (env[0].__jmpbuf, val ?: 1);
  32. }
  33. //strong_alias (__uClibc_siglongjmp, __uClibc_longjmp)
  34. //_weak_alias (__uClibc_siglongjmp, _longjmp)
  35. asm(".weak _longjmp");
  36. asm("_longjmp = __uClibc_siglongjmp");
  37. //weak_alias (__uClibc_siglongjmp, longjmp)
  38. asm(".weak longjmp");
  39. asm("longjmp = __uClibc_siglongjmp");
  40. //weak_alias (__uClibc_siglongjmp, siglongjmp)
  41. asm(".weak siglongjmp");
  42. asm("siglongjmp = __uClibc_siglongjmp");
  43. asm(".weak __sigprocmask");
  44. asm("__sigprocmask = sigprocmask");