2007-11-22 16:30:50 +08:00
|
|
|
#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
|
|
|
|
|
|
2007-11-26 19:38:36 +08:00
|
|
|
extern int do_fpu_inst(unsigned short, struct pt_regs *);
|
|
|
|
|
|
2007-11-22 16:30:50 +08:00
|
|
|
#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 */
|
