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arch
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powerpc
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include
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asm
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switch_to.h

switch_to.h 1.8 KB
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  1. /*
    2. 

  2.  * Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu>
    3. 

  3.  */
    4. 

  4. #ifndef _ASM_POWERPC_SWITCH_TO_H
    5. 

  5. #define _ASM_POWERPC_SWITCH_TO_H
    6. 

  6. 

  7. struct thread_struct;
    8. 

  8. struct task_struct;
    9. 

  9. struct pt_regs;
    10. 

  10. 

  11. extern struct task_struct *__switch_to(struct task_struct *,
    12. 

  12. 	struct task_struct *);
    13. 

  13. #define switch_to(prev, next, last)	((last) = __switch_to((prev), (next)))
    14. 

  14. 

  15. struct thread_struct;
    16. 

  16. extern struct task_struct *_switch(struct thread_struct *prev,
    17. 

  17. 				   struct thread_struct *next);
    18. 

  18. 

  19. extern void giveup_fpu(struct task_struct *);
    20. 

  20. extern void load_up_fpu(void);
    21. 

  21. extern void disable_kernel_fp(void);
    22. 

  22. extern void enable_kernel_fp(void);
    23. 

  23. extern void flush_fp_to_thread(struct task_struct *);
    24. 

  24. extern void enable_kernel_altivec(void);
    25. 

  25. extern void load_up_altivec(struct task_struct *);
    26. 

  26. extern int emulate_altivec(struct pt_regs *);
    27. 

  27. extern void __giveup_vsx(struct task_struct *);
    28. 

  28. extern void giveup_vsx(struct task_struct *);
    29. 

  29. extern void enable_kernel_spe(void);
    30. 

  30. extern void giveup_spe(struct task_struct *);
    31. 

  31. extern void load_up_spe(struct task_struct *);
    32. 

  32. 

  33. #ifndef CONFIG_SMP
    34. 

  34. extern void discard_lazy_cpu_state(void);
    35. 

  35. #else
    36. 

  36. static inline void discard_lazy_cpu_state(void)
    37. 

  37. {
    38. 

  38. }
    39. 

  39. #endif
    40. 

  40. 

  41. #ifdef CONFIG_ALTIVEC
    42. 

  42. extern void flush_altivec_to_thread(struct task_struct *);
    43. 

  43. extern void giveup_altivec(struct task_struct *);
    44. 

  44. extern void giveup_altivec_notask(void);
    45. 

  45. #else
    46. 

  46. static inline void flush_altivec_to_thread(struct task_struct *t)
    47. 

  47. {
    48. 

  48. }
    49. 

  49. static inline void giveup_altivec(struct task_struct *t)
    50. 

  50. {
    51. 

  51. }
    52. 

  52. #endif
    53. 

  53. 

  54. #ifdef CONFIG_VSX
    55. 

  55. extern void flush_vsx_to_thread(struct task_struct *);
    56. 

  56. #else
    57. 

  57. static inline void flush_vsx_to_thread(struct task_struct *t)
    58. 

  58. {
    59. 

  59. }
    60. 

  60. #endif
    61. 

  61. 

  62. #ifdef CONFIG_SPE
    63. 

  63. extern void flush_spe_to_thread(struct task_struct *);
    64. 

  64. #else
    65. 

  65. static inline void flush_spe_to_thread(struct task_struct *t)
    66. 

  66. {
    67. 

  67. }
    68. 

  68. #endif
    69. 

  69. 

  70. #endif /* _ASM_POWERPC_SWITCH_TO_H */
    71.