projects / linux-2.6-block.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); | |
| c2d52644 MN |
18 | #ifdef CONFIG_PPC_BOOK3S_64 |
| 19 | static inline void save_tar(struct thread_struct *prev) | |
| 20 | { | |
| 21 | if (cpu_has_feature(CPU_FTR_ARCH_207S)) | |
| 22 | prev->tar = mfspr(SPRN_TAR); | |
| 23 | } | |
| 24 | #else | |
| 25 | static inline void save_tar(struct thread_struct *prev) {} | |
| 26 | #endif | |
| ae3a197e | 27 | |
| 8fae845f | 28 | extern void load_up_fpu(void); |
| ae3a197e | 29 | extern void enable_kernel_fp(void); |
| ae3a197e | 30 | extern void enable_kernel_altivec(void); |
| ae3a197e DH |
31 | extern void load_up_altivec(struct task_struct *); |
| 32 | extern int emulate_altivec(struct pt_regs *); | |
| 33 | extern void __giveup_vsx(struct task_struct *); | |
| 34 | extern void giveup_vsx(struct task_struct *); | |
| 35 | extern void enable_kernel_spe(void); | |
| 36 | extern void giveup_spe(struct task_struct *); | |
| 37 | extern void load_up_spe(struct task_struct *); | |
| 38 | ||
| 39 | #ifndef CONFIG_SMP | |
| 40 | extern void discard_lazy_cpu_state(void); | |
| 41 | #else | |
| 42 | static inline void discard_lazy_cpu_state(void) | |
| 43 | { | |
| 44 | } | |
| 45 | #endif | |
| 46 | ||
| 037f0eed KH |
47 | #ifdef CONFIG_PPC_FPU |
| 48 | extern void flush_fp_to_thread(struct task_struct *); | |
| 5f20be44 | 49 | extern void giveup_fpu(struct task_struct *); |
| 037f0eed KH |
50 | #else |
| 51 | static inline void flush_fp_to_thread(struct task_struct *t) { } | |
| 5f20be44 | 52 | static inline void giveup_fpu(struct task_struct *t) { } |
| 037f0eed KH |
53 | #endif |
| 54 | ||
| ae3a197e DH |
55 | #ifdef CONFIG_ALTIVEC |
| 56 | extern void flush_altivec_to_thread(struct task_struct *); | |
| 8cd3c23d | 57 | extern void giveup_altivec(struct task_struct *); |
| 35000870 | 58 | extern void giveup_altivec_notask(void); |
| ae3a197e DH |
59 | #else |
| 60 | static inline void flush_altivec_to_thread(struct task_struct *t) | |
| 61 | { | |
| 62 | } | |
| 8cd3c23d AB |
63 | static inline void giveup_altivec(struct task_struct *t) |
| 64 | { | |
| 65 | } | |
| ae3a197e DH |
66 | #endif |
| 67 | ||
| 68 | #ifdef CONFIG_VSX | |
| 69 | extern void flush_vsx_to_thread(struct task_struct *); | |
| 70 | #else | |
| 71 | static inline void flush_vsx_to_thread(struct task_struct *t) | |
| 72 | { | |
| 73 | } | |
| 74 | #endif | |
| 75 | ||
| 76 | #ifdef CONFIG_SPE | |
| 77 | extern void flush_spe_to_thread(struct task_struct *); | |
| 78 | #else | |
| 79 | static inline void flush_spe_to_thread(struct task_struct *t) | |
| 80 | { | |
| 81 | } | |
| 82 | #endif | |
| 83 | ||
| 330a1eb7 ME |
84 | static inline void clear_task_ebb(struct task_struct *t) |
| 85 | { | |
| 86 | #ifdef CONFIG_PPC_BOOK3S_64 | |
| 87 | /* EBB perf events are not inherited, so clear all EBB state. */ | |
| 88 | t->thread.bescr = 0; | |
| 89 | t->thread.mmcr2 = 0; | |
| 90 | t->thread.mmcr0 = 0; | |
| 91 | t->thread.siar = 0; | |
| 92 | t->thread.sdar = 0; | |
| 93 | t->thread.sier = 0; | |
| 94 | t->thread.used_ebb = 0; | |
| 95 | #endif | |
| 96 | } | |
| 97 | ||
| ae3a197e | 98 | #endif /* _ASM_POWERPC_SWITCH_TO_H */ |