| Paul Mundt | 332fd57 | 2007-11-22 17:30:50 +0900 | [diff] [blame] | 1 | #ifndef __ASM_SH_FPU_H |
| 2 | #define __ASM_SH_FPU_H |
| 3 | |
| 4 | #define SR_FD 0x00008000 |
| 5 | |
| 6 | #ifndef __ASSEMBLY__ |
| 7 | #include <asm/ptrace.h> |
| 8 | |
| 9 | #ifdef CONFIG_SH_FPU |
| 10 | static inline void release_fpu(struct pt_regs *regs) |
| 11 | { |
| 12 | regs->sr |= SR_FD; |
| 13 | } |
| 14 | |
| 15 | static inline void grab_fpu(struct pt_regs *regs) |
| 16 | { |
| 17 | regs->sr &= ~SR_FD; |
| 18 | } |
| 19 | |
| 20 | struct task_struct; |
| 21 | |
| 22 | extern void save_fpu(struct task_struct *__tsk, struct pt_regs *regs); |
| 23 | #else |
| 24 | #define release_fpu(regs) do { } while (0) |
| 25 | #define grab_fpu(regs) do { } while (0) |
| 26 | #define save_fpu(tsk, regs) do { } while (0) |
| 27 | #endif |
| 28 | |
| Paul Mundt | 74d99a5 | 2007-11-26 20:38:36 +0900 | [diff] [blame] | 29 | extern int do_fpu_inst(unsigned short, struct pt_regs *); |
| 30 | |
| Paul Mundt | 332fd57 | 2007-11-22 17:30:50 +0900 | [diff] [blame] | 31 | #define unlazy_fpu(tsk, regs) do { \ |
| 32 | if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) { \ |
| 33 | save_fpu(tsk, regs); \ |
| 34 | } \ |
| 35 | } while (0) |
| 36 | |
| 37 | #define clear_fpu(tsk, regs) do { \ |
| 38 | if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) { \ |
| 39 | clear_tsk_thread_flag(tsk, TIF_USEDFPU); \ |
| 40 | release_fpu(regs); \ |
| 41 | } \ |
| 42 | } while (0) |
| 43 | |
| 44 | #endif /* __ASSEMBLY__ */ |
| 45 | |
| 46 | #endif /* __ASM_SH_FPU_H */ |