#ifndef __ASM_SH_FPU_H
#define __ASM_SH_FPU_H

#ifndef __ASSEMBLY__

struct task_struct;

#ifdef CONFIG_SH_FPU
static inline void release_fpu(struct pt_regs *regs)
{
regs->sr |= SR_FD;
}

static inline void grab_fpu(struct pt_regs *regs)
{
regs->sr &= ~SR_FD;
}

extern void save_fpu(struct task_struct *__tsk);
extern void restore_fpu(struct task_struct *__tsk);
extern void fpu_state_restore(struct pt_regs *regs);
extern void __fpu_state_restore(void);
#else
#define save_fpu(tsk) do { } while (0)
#define restore_fpu(tsk) do { } while (0)
#define release_fpu(regs) do { } while (0)
#define grab_fpu(regs) do { } while (0)
#define fpu_state_restore(regs) do { } while (0)
#define __fpu_state_restore(regs) do { } while (0)
#endif

struct user_regset;

extern int do_fpu_inst(unsigned short, struct pt_regs *);
extern int init_fpu(struct task_struct *);

extern int fpregs_get(struct task_struct *target,
const struct user_regset *regset,
unsigned int pos, unsigned int count,
void *kbuf, void __user *ubuf);

static inline void __unlazy_fpu(struct task_struct *tsk, struct pt_regs *regs)
{
if (task_thread_info(tsk)->status & TS_USEDFPU) {
task_thread_info(tsk)->status &= ~TS_USEDFPU;
save_fpu(tsk);
release_fpu(regs);
} else
tsk->thread.fpu_counter = 0;
}

static inline void unlazy_fpu(struct task_struct *tsk, struct pt_regs *regs)
{
preempt_disable();
__unlazy_fpu(tsk, regs);
preempt_enable();
}

static inline void clear_fpu(struct task_struct *tsk, struct pt_regs *regs)
{
preempt_disable();
if (task_thread_info(tsk)->status & TS_USEDFPU) {
task_thread_info(tsk)->status &= ~TS_USEDFPU;
release_fpu(regs);
}
preempt_enable();
}

#endif /* __ASSEMBLY__ */

#endif /* __ASM_SH_FPU_H */