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Commit | Line | Data |
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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); | |
ae3a197e | 26 | extern void load_up_spe(struct task_struct *); |
f5f97210 | 27 | extern void switch_booke_debug_regs(struct debug_reg *new_debug); |
ae3a197e | 28 | |
dc4fbba1 AB |
29 | static inline void disable_kernel_fp(void) { } |
30 | static inline void disable_kernel_altivec(void) { } | |
31 | static inline void disable_kernel_spe(void) { } | |
32 | static inline void disable_kernel_vsx(void) { } | |
33 | ||
037f0eed KH |
34 | #ifdef CONFIG_PPC_FPU |
35 | extern void flush_fp_to_thread(struct task_struct *); | |
5f20be44 | 36 | extern void giveup_fpu(struct task_struct *); |
98da581e | 37 | extern void __giveup_fpu(struct task_struct *); |
037f0eed KH |
38 | #else |
39 | static inline void flush_fp_to_thread(struct task_struct *t) { } | |
5f20be44 | 40 | static inline void giveup_fpu(struct task_struct *t) { } |
98da581e | 41 | static inline void __giveup_fpu(struct task_struct *t) { } |
037f0eed KH |
42 | #endif |
43 | ||
ae3a197e DH |
44 | #ifdef CONFIG_ALTIVEC |
45 | extern void flush_altivec_to_thread(struct task_struct *); | |
8cd3c23d | 46 | extern void giveup_altivec(struct task_struct *); |
98da581e | 47 | extern void __giveup_altivec(struct task_struct *); |
ae3a197e | 48 | #else |
98da581e AB |
49 | static inline void flush_altivec_to_thread(struct task_struct *t) { } |
50 | static inline void giveup_altivec(struct task_struct *t) { } | |
51 | static inline void __giveup_altivec(struct task_struct *t) { } | |
ae3a197e DH |
52 | #endif |
53 | ||
54 | #ifdef CONFIG_VSX | |
55 | extern void flush_vsx_to_thread(struct task_struct *); | |
56 | #else | |
57 | static inline void flush_vsx_to_thread(struct task_struct *t) | |
58 | { | |
59 | } | |
60 | #endif | |
61 | ||
62 | #ifdef CONFIG_SPE | |
63 | extern void flush_spe_to_thread(struct task_struct *); | |
98da581e AB |
64 | extern void giveup_spe(struct task_struct *); |
65 | extern void __giveup_spe(struct task_struct *); | |
ae3a197e | 66 | #else |
98da581e AB |
67 | static inline void flush_spe_to_thread(struct task_struct *t) { } |
68 | static inline void giveup_spe(struct task_struct *t) { } | |
69 | static inline void __giveup_spe(struct task_struct *t) { } | |
ae3a197e DH |
70 | #endif |
71 | ||
330a1eb7 ME |
72 | static inline void clear_task_ebb(struct task_struct *t) |
73 | { | |
74 | #ifdef CONFIG_PPC_BOOK3S_64 | |
75 | /* EBB perf events are not inherited, so clear all EBB state. */ | |
3df48c98 ME |
76 | t->thread.ebbrr = 0; |
77 | t->thread.ebbhr = 0; | |
330a1eb7 ME |
78 | t->thread.bescr = 0; |
79 | t->thread.mmcr2 = 0; | |
80 | t->thread.mmcr0 = 0; | |
81 | t->thread.siar = 0; | |
82 | t->thread.sdar = 0; | |
83 | t->thread.sier = 0; | |
84 | t->thread.used_ebb = 0; | |
85 | #endif | |
86 | } | |
87 | ||
ae3a197e | 88 | #endif /* _ASM_POWERPC_SWITCH_TO_H */ |