setjmp.h 2.0 KB

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  1. /* Copyright (C) 1997, 1998 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'. ARM 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. #ifndef _ASM
  22. /* Jump buffer contains v1-v6, sl, fp, sp and pc. Other registers are not
  23. saved. */
  24. #ifdef __ARM_EABI__
  25. /* The exact set of registers saved may depend on the particular core
  26. in use, as some coprocessor registers may need to be saved. The C
  27. Library ABI requires that the buffer be 8-byte aligned, and
  28. recommends that the buffer contain 64 words. The first 28 words
  29. are occupied by v1-v6, sl, fp, sp, pc, d8-d15, and fpscr. (Note
  30. that d8-15 require 17 words, due to the use of fstmx.) */
  31. typedef int __jmp_buf[64] __attribute__((aligned (8)));
  32. #elif defined __MAVERICK__ || defined __IWMMXT__
  33. typedef int __jmp_buf[34];
  34. #else
  35. typedef int __jmp_buf[22];
  36. #endif
  37. #endif
  38. #define __JMP_BUF_SP 8
  39. /* Test if longjmp to JMPBUF would unwind the frame
  40. containing a local variable at ADDRESS. */
  41. #define _JMPBUF_UNWINDS(jmpbuf, address) \
  42. ((void *) (address) < (void *) (jmpbuf[__JMP_BUF_SP]))
  43. #endif /* bits/setjmp.h */