2012-03-28 11:30:02 -06:00
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/*
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* Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu>
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*/
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#ifndef _ASM_POWERPC_SWITCH_TO_H
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#define _ASM_POWERPC_SWITCH_TO_H
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struct thread_struct;
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struct task_struct;
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struct pt_regs;
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extern struct task_struct *__switch_to(struct task_struct *,
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struct task_struct *);
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#define switch_to(prev, next, last) ((last) = __switch_to((prev), (next)))
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struct thread_struct;
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extern struct task_struct *_switch(struct thread_struct *prev,
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struct thread_struct *next);
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extern void giveup_fpu(struct task_struct *);
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2011-12-20 08:34:45 -07:00
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extern void load_up_fpu(void);
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2012-03-28 11:30:02 -06:00
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extern void disable_kernel_fp(void);
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extern void enable_kernel_fp(void);
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extern void flush_fp_to_thread(struct task_struct *);
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extern void enable_kernel_altivec(void);
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extern void load_up_altivec(struct task_struct *);
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extern int emulate_altivec(struct pt_regs *);
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extern void __giveup_vsx(struct task_struct *);
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extern void giveup_vsx(struct task_struct *);
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extern void enable_kernel_spe(void);
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extern void giveup_spe(struct task_struct *);
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extern void load_up_spe(struct task_struct *);
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#ifndef CONFIG_SMP
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extern void discard_lazy_cpu_state(void);
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#else
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static inline void discard_lazy_cpu_state(void)
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{
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}
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#endif
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#ifdef CONFIG_ALTIVEC
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extern void flush_altivec_to_thread(struct task_struct *);
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2012-04-15 14:54:59 -06:00
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extern void giveup_altivec(struct task_struct *);
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2012-04-15 14:56:45 -06:00
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extern void giveup_altivec_notask(void);
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2012-03-28 11:30:02 -06:00
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#else
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static inline void flush_altivec_to_thread(struct task_struct *t)
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{
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}
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2012-04-15 14:54:59 -06:00
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static inline void giveup_altivec(struct task_struct *t)
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{
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}
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2012-03-28 11:30:02 -06:00
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#endif
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#ifdef CONFIG_VSX
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extern void flush_vsx_to_thread(struct task_struct *);
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#else
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static inline void flush_vsx_to_thread(struct task_struct *t)
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{
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}
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#endif
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#ifdef CONFIG_SPE
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extern void flush_spe_to_thread(struct task_struct *);
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#else
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static inline void flush_spe_to_thread(struct task_struct *t)
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{
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}
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#endif
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#endif /* _ASM_POWERPC_SWITCH_TO_H */
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