projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| ae3a197e DH |
1 | /* |
| 2 | * Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu> | |
| 3 | */ | |
| 4 | #ifndef _ASM_POWERPC_SWITCH_TO_H | |
| 5 | #define _ASM_POWERPC_SWITCH_TO_H | |
| 6 | ||
| 7 | struct thread_struct; | |
| 8 | struct task_struct; | |
| 9 | struct pt_regs; | |
| 10 | ||
| 11 | extern struct task_struct *__switch_to(struct task_struct *, | |
| 12 | struct task_struct *); | |
| 13 | #define switch_to(prev, next, last) ((last) = __switch_to((prev), (next))) | |
| 14 | ||
| 15 | struct thread_struct; | |
| 16 | extern struct task_struct *_switch(struct thread_struct *prev, | |
| 17 | struct thread_struct *next); | |
| 18 | ||
| ae3a197e | 19 | extern void enable_kernel_fp(void); |
| ae3a197e | 20 | extern void enable_kernel_altivec(void); |
| 72cd7b44 | 21 | extern void enable_kernel_vsx(void); |
| ae3a197e DH |
22 | extern int emulate_altivec(struct pt_regs *); |
| 23 | extern void __giveup_vsx(struct task_struct *); | |
| 24 | extern void giveup_vsx(struct task_struct *); | |
| 25 | extern void enable_kernel_spe(void); | |
| 26 | extern void giveup_spe(struct task_struct *); | |
| 27 | extern void load_up_spe(struct task_struct *); | |
| f5f97210 | 28 | extern void switch_booke_debug_regs(struct debug_reg *new_debug); |
| ae3a197e DH |
29 | |
| 30 | #ifndef CONFIG_SMP | |
| 31 | extern void discard_lazy_cpu_state(void); | |
| 32 | #else | |
| 33 | static inline void discard_lazy_cpu_state(void) | |
| 34 | { | |
| 35 | } | |
| 36 | #endif | |
| 37 | ||
| 037f0eed KH |
38 | #ifdef CONFIG_PPC_FPU |
| 39 | extern void flush_fp_to_thread(struct task_struct *); | |
| 5f20be44 | 40 | extern void giveup_fpu(struct task_struct *); |
| 037f0eed KH |
41 | #else |
| 42 | static inline void flush_fp_to_thread(struct task_struct *t) { } | |
| 5f20be44 | 43 | static inline void giveup_fpu(struct task_struct *t) { } |
| 037f0eed KH |
44 | #endif |
| 45 | ||
| ae3a197e DH |
46 | #ifdef CONFIG_ALTIVEC |
| 47 | extern void flush_altivec_to_thread(struct task_struct *); | |
| 8cd3c23d | 48 | extern void giveup_altivec(struct task_struct *); |
| 35000870 | 49 | extern void giveup_altivec_notask(void); |
| ae3a197e DH |
50 | #else |
| 51 | static inline void flush_altivec_to_thread(struct task_struct *t) | |
| 52 | { | |
| 53 | } | |
| 8cd3c23d AB |
54 | static inline void giveup_altivec(struct task_struct *t) |
| 55 | { | |
| 56 | } | |
| ae3a197e DH |
57 | #endif |
| 58 | ||
| 59 | #ifdef CONFIG_VSX | |
| 60 | extern void flush_vsx_to_thread(struct task_struct *); | |
| 61 | #else | |
| 62 | static inline void flush_vsx_to_thread(struct task_struct *t) | |
| 63 | { | |
| 64 | } | |
| 65 | #endif | |
| 66 | ||
| 67 | #ifdef CONFIG_SPE | |
| 68 | extern void flush_spe_to_thread(struct task_struct *); | |
| 69 | #else | |
| 70 | static inline void flush_spe_to_thread(struct task_struct *t) | |
| 71 | { | |
| 72 | } | |
| 73 | #endif | |
| 74 | ||
| 330a1eb7 ME |
75 | static inline void clear_task_ebb(struct task_struct *t) |
| 76 | { | |
| 77 | #ifdef CONFIG_PPC_BOOK3S_64 | |
| 78 | /* EBB perf events are not inherited, so clear all EBB state. */ | |
| 3df48c98 ME |
79 | t->thread.ebbrr = 0; |
| 80 | t->thread.ebbhr = 0; | |
| 330a1eb7 ME |
81 | t->thread.bescr = 0; |
| 82 | t->thread.mmcr2 = 0; | |
| 83 | t->thread.mmcr0 = 0; | |
| 84 | t->thread.siar = 0; | |
| 85 | t->thread.sdar = 0; | |
| 86 | t->thread.sier = 0; | |
| 87 | t->thread.used_ebb = 0; | |
| 88 | #endif | |
| 89 | } | |
| 90 | ||
| ae3a197e | 91 | #endif /* _ASM_POWERPC_SWITCH_TO_H */ |