projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 332fd57b PM |
1 | #ifndef __ASM_SH_FPU_H |
| 2 | #define __ASM_SH_FPU_H | |
| 3 | ||
| 332fd57b | 4 | #ifndef __ASSEMBLY__ |
| 9bbafce2 | 5 | #include <linux/preempt.h> |
| 332fd57b PM |
6 | #include <asm/ptrace.h> |
| 7 | ||
| 8 | #ifdef CONFIG_SH_FPU | |
| 9 | static inline void release_fpu(struct pt_regs *regs) | |
| 10 | { | |
| 11 | regs->sr |= SR_FD; | |
| 12 | } | |
| 13 | ||
| 14 | static inline void grab_fpu(struct pt_regs *regs) | |
| 15 | { | |
| 16 | regs->sr &= ~SR_FD; | |
| 17 | } | |
| 18 | ||
| 19 | struct task_struct; | |
| 20 | ||
| 21 | extern void save_fpu(struct task_struct *__tsk, struct pt_regs *regs); | |
| 22 | #else | |
| 138bed15 | 23 | |
| 332fd57b PM |
24 | #define release_fpu(regs) do { } while (0) |
| 25 | #define grab_fpu(regs) do { } while (0) | |
| 138bed15 PM |
26 | |
| 27 | static inline void save_fpu(struct task_struct *tsk, struct pt_regs *regs) | |
| 28 | { | |
| 29 | clear_tsk_thread_flag(tsk, TIF_USEDFPU); | |
| 30 | } | |
| 332fd57b PM |
31 | #endif |
| 32 | ||
| 74d99a5e PM |
33 | extern int do_fpu_inst(unsigned short, struct pt_regs *); |
| 34 | ||
| 9bbafce2 PM |
35 | static inline void unlazy_fpu(struct task_struct *tsk, struct pt_regs *regs) |
| 36 | { | |
| 37 | preempt_disable(); | |
| 38 | if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) | |
| 39 | save_fpu(tsk, regs); | |
| 40 | preempt_enable(); | |
| 41 | } | |
| 42 | ||
| 43 | static inline void clear_fpu(struct task_struct *tsk, struct pt_regs *regs) | |
| 44 | { | |
| 45 | preempt_disable(); | |
| 46 | if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) { | |
| 47 | clear_tsk_thread_flag(tsk, TIF_USEDFPU); | |
| 48 | release_fpu(regs); | |
| 49 | } | |
| 50 | preempt_enable(); | |
| 51 | } | |
| 332fd57b PM |
52 | |
| 53 | #endif /* __ASSEMBLY__ */ | |
| 54 | ||
| 55 | #endif /* __ASM_SH_FPU_H */ |