setjmp.h 2.0 KB

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  1. /* Copyright (C) 2002, David McCullough <davidm@snapgear.com> */
  2. /* Copyright (C) 1997, 1998 Free Software Foundation, Inc.
  3. This file is part of the GNU C Library.
  4. The GNU C Library is free software; you can redistribute it and/or
  5. modify it under the terms of the GNU Lesser General Public
  6. License as published by the Free Software Foundation; either
  7. version 2.1 of the License, or (at your option) any later version.
  8. The GNU C Library is distributed in the hope that it will be useful,
  9. but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11. Lesser General Public License for more details.
  12. You should have received a copy of the GNU Lesser General Public
  13. License along with the GNU C Library; if not, write to the Free
  14. Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  15. 02111-1307 USA. */
  16. /* Define the machine-dependent type `jmp_buf'. m68k version. */
  17. #ifndef _BITS_SETJMP_H
  18. #define _BITS_SETJMP_H 1
  19. #if !defined _SETJMP_H && !defined _PTHREAD_H
  20. # error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead."
  21. #endif
  22. #ifndef _ASM
  23. typedef struct
  24. {
  25. unsigned long __dregs[6]; /* save d2 - d7 */
  26. unsigned long __aregs[6]; /* save a2 - a7 */
  27. unsigned long __pc; /* the return address */
  28. #if defined __HAVE_68881__ || defined __HAVE_FPU__
  29. /* There are eight floating point registers which
  30. are saved in IEEE 96-bit extended format. */
  31. char __fpregs[8 * (96 / 8)];
  32. #endif
  33. } __jmp_buf[1];
  34. #endif /* _ASM */
  35. #define JB_REGS 0
  36. #define JB_DREGS 0
  37. #define JB_AREGS 24
  38. #define JB_PC 48
  39. #define JB_FPREGS 52
  40. #if defined __HAVE_68881__ || defined __HAVE_FPU__
  41. # define JB_SIZE 76
  42. #else
  43. # define JB_SIZE 52
  44. #endif
  45. /* Test if longjmp to JMPBUF would unwind the frame
  46. containing a local variable at ADDRESS. */
  47. #define _JMPBUF_UNWINDS(jmpbuf, address) \
  48. ((void *) (address) < (void *) (jmpbuf)->__aregs[5])
  49. #endif /* bits/setjmp.h */