setjmp.h 2.0 KB

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  1. /* Copyright (C) 1999, 2000, 2003, 2004 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. /* Define the machine-dependent type `jmp_buf'. FRV version. */
  16. #ifndef _SETJMP_H
  17. # error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead."
  18. #endif
  19. #define __SETJMP_NUM_INT 32 /* number of integer registers to save */
  20. #define __SETJMP_NUM_DBL 32 /* number of double registers to save */
  21. #define __SETJMP_INT(x) (x)
  22. #define __SETJMP_DBL(x) (__SETJMP_NUM_INT+(x))
  23. #define __SETJMP_LR (__SETJMP_NUM_INT+__SETJMP_NUM_DBL)
  24. #define __SETJMP_SP (__SETJMP_LR+1)
  25. #define __SETJMP_FP (__SETJMP_SP+1)
  26. #ifndef _ASM
  27. typedef struct
  28. /* Demand 64-bit alignment such that we can use std/ldd in
  29. setjmp/longjmp. */
  30. __attribute__((__aligned__(8)))
  31. {
  32. /* Callee-saved registers. */
  33. unsigned long __ints[__SETJMP_NUM_INT]; /* integer registers */
  34. unsigned long __dbls[__SETJMP_NUM_DBL]; /* double registers */
  35. unsigned long __lr; /* linkage register */
  36. unsigned long __sp; /* stack pointer */
  37. unsigned long __fp; /* frame pointer */
  38. } __jmp_buf[1];
  39. #endif
  40. /* Test if longjmp to JMPBUF would unwind the frame
  41. containing a local variable at ADDRESS. */
  42. #define _JMPBUF_UNWINDS(jmpbuf, address) \
  43. ((unsigned long) (address) < (jmpbuf)->__sp)