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signal-common.h

signal-common.h 1.1 KB
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  1. /*
    2. 

  2.  * This file is subject to the terms and conditions of the GNU General Public
    3. 

  3.  * License.  See the file "COPYING" in the main directory of this archive
    4. 

  4.  * for more details.
    5. 

  5.  *
    6. 

  6.  * Copyright (C) 1991, 1992  Linus Torvalds
    7. 

  7.  * Copyright (C) 1994 - 2000  Ralf Baechle
    8. 

  8.  * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
    9. 

  9.  */
    10. 

  10. 

  11. #ifndef __SIGNAL_COMMON_H
    12. 

  12. #define __SIGNAL_COMMON_H
    13. 

  13. 

  14. /* #define DEBUG_SIG */
    15. 

  15. 

  16. #ifdef DEBUG_SIG
    17. 

  17. #  define DEBUGP(fmt, args...) printk("%s: " fmt, __func__, ##args)
    18. 

  18. #else
    19. 

  19. #  define DEBUGP(fmt, args...)
    20. 

  20. #endif
    21. 

  21. 

  22. /*
    23. 

  23.  * Determine which stack to use..
    24. 

  24.  */
    25. 

  25. extern void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
    26. 

  26. 				 size_t frame_size);
    27. 

  27. /* Check and clear pending FPU exceptions in saved CSR */
    28. 

  28. extern int fpcsr_pending(unsigned int __user *fpcsr);
    29. 

  29. 

  30. /* Make sure we will not lose FPU ownership */
    31. 

  31. #ifdef CONFIG_PREEMPT
    32. 

  32. #define lock_fpu_owner()	preempt_disable()
    33. 

  33. #define unlock_fpu_owner()	preempt_enable()
    34. 

  34. #else
    35. 

  35. #define lock_fpu_owner()	pagefault_disable()
    36. 

  36. #define unlock_fpu_owner()	pagefault_enable()
    37. 

  37. #endif
    38. 

  38. 

  39. #endif	/* __SIGNAL_COMMON_H */
    40.