fpu.h
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#ifndef __ASM_SH_FPU_H
#define __ASM_SH_FPU_H
#define SR_FD 0x00008000
#ifndef __ASSEMBLY__
#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)
#define save_fpu(tsk, regs) do { } while (0)
#endif
extern int do_fpu_inst(unsigned short, struct pt_regs *);
#define unlazy_fpu(tsk, regs) do { \
if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) { \
save_fpu(tsk, regs); \
} \
} while (0)
#define clear_fpu(tsk, regs) do { \
if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) { \
clear_tsk_thread_flag(tsk, TIF_USEDFPU); \
release_fpu(regs); \
} \
} while (0)
#endif /* __ASSEMBLY__ */
#endif /* __ASM_SH_FPU_H */