setjmp.h 1.7 KB

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  1. /* Copyright (C) 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 Lesser General Public
  5. License as published by the Free Software Foundation; either
  6. version 2.1 of the 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. Lesser General Public License for more details.
  11. You should have received a copy of the GNU Lesser General Public
  12. License along with the GNU C Library; if not, write to the Free
  13. Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  14. 02111-1307 USA. */
  15. /* Define the machine-dependent type `jmp_buf'. HPPA version. */
  16. #ifndef _BITS_SETJMP_H
  17. #define _BITS_SETJMP_H 1
  18. #if !defined _SETJMP_H && !defined _PTHREAD_H
  19. # error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead."
  20. #endif
  21. /* The previous bits/setjmp.h had __jmp_buf defined as a structure.
  22. We use an array of 'double' instead, to make writing the assembler
  23. easier, and to ensure proper alignment. Naturally, user code should
  24. not depend on either representation. */
  25. #if defined __USE_MISC || defined _ASM
  26. #define JB_SP (76/4)
  27. #endif
  28. #ifndef _ASM
  29. typedef double __jmp_buf[21];
  30. #endif
  31. /* Test if longjmp to JMPBUF would unwind the frame containing a local
  32. variable at ADDRESS. */
  33. #define _JMPBUF_UNWINDS(_jmpbuf, _address) \
  34. ((void *)(_address) > (void *)(((unsigned long *) _jmpbuf)[JB_SP]))
  35. #endif /* bits/setjmp.h */