setjmp.h 1.9 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 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'. CRIS version. */
  16. #ifndef _SETJMP_H
  17. # error "Never include <bits/setjmp.h> directly; use <setjmp.h> instead."
  18. #endif
  19. /*
  20. Note that we save and restore CCR to be able to
  21. correctly handle DI/EI. Note also that the "move x,ccr" does NOT affect
  22. the DMA enable bits (E and D).
  23. jmp_buf[0] - PC
  24. jmp_buf[1] - SP (R14)
  25. jmp_buf[2] - R13
  26. jmp_buf[3] - R12
  27. jmp_buf[4] - R11
  28. jmp_buf[5] - R10
  29. jmp_buf[6] - R9
  30. jmp_buf[7] - R8
  31. jmp_buf[8] - R7
  32. jmp_buf[9] - R6
  33. jmp_buf[10] - R5
  34. jmp_buf[11] - R4
  35. jmp_buf[12] - R3
  36. jmp_buf[13] - R2
  37. jmp_buf[14] - R1
  38. jmp_buf[15] - R0
  39. jmp_buf[16] - SRP
  40. jmp_buf[17] - CCR
  41. */
  42. #define _JBLEN 18
  43. #if defined (__USE_MISC) || defined (_ASM)
  44. #define JB_SP 1
  45. #endif
  46. #ifndef _ASM
  47. typedef int __jmp_buf[_JBLEN];
  48. #endif
  49. /* Test if longjmp to JMPBUF would unwind the frame
  50. containing a local variable at ADDRESS. */
  51. #define _JMPBUF_UNWINDS(jmpbuf, address) \
  52. ((void *) (address) < (void *) (jmpbuf)[JB_SP])