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#ifndef __ASM_SH_FPU_H
#define __ASM_SH_FPU_H
#ifndef __ASSEMBLY__
#include <linux/preempt.h>
#include <asm/ptrace.h>
#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;
}
struct task_struct;
extern void save_fpu(struct task_struct *__tsk, struct pt_regs *regs);
#else
#define release_fpu(regs) do { } while (0)
#define grab_fpu(regs) do { } while (0)
static inline void save_fpu(struct task_struct *tsk, struct pt_regs *regs)
{
clear_tsk_thread_flag(tsk, TIF_USEDFPU);
}
#endif
extern int do_fpu_inst(unsigned short, struct pt_regs *);
static inline void unlazy_fpu(struct task_struct *tsk, struct pt_regs *regs)
{
preempt_disable();
if (test_tsk_thread_flag(tsk, TIF_USEDFPU))
save_fpu(tsk, regs);
preempt_enable();
}
static inline void clear_fpu(struct task_struct *tsk, struct pt_regs *regs)
{
preempt_disable();
if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) {
clear_tsk_thread_flag(tsk, TIF_USEDFPU);
release_fpu(regs);
}
preempt_enable();
}
#endif /* __ASSEMBLY__ */
#endif /* __ASM_SH_FPU_H */
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