Warning: This file is not a C or C++ file. It does not have highlighting.
| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
|---|---|
| 2 | #ifndef __ASM_SH_FPU_H |
| 3 | #define __ASM_SH_FPU_H |
| 4 | |
| 5 | #ifndef __ASSEMBLY__ |
| 6 | |
| 7 | #include <asm/ptrace.h> |
| 8 | |
| 9 | struct task_struct; |
| 10 | |
| 11 | #ifdef CONFIG_SH_FPU |
| 12 | static inline void release_fpu(struct pt_regs *regs) |
| 13 | { |
| 14 | regs->sr |= SR_FD; |
| 15 | } |
| 16 | |
| 17 | static inline void grab_fpu(struct pt_regs *regs) |
| 18 | { |
| 19 | regs->sr &= ~SR_FD; |
| 20 | } |
| 21 | |
| 22 | extern void save_fpu(struct task_struct *__tsk); |
| 23 | extern void restore_fpu(struct task_struct *__tsk); |
| 24 | extern void fpu_state_restore(struct pt_regs *regs); |
| 25 | extern void __fpu_state_restore(void); |
| 26 | #else |
| 27 | #define save_fpu(tsk) do { } while (0) |
| 28 | #define restore_fpu(tsk) do { } while (0) |
| 29 | #define release_fpu(regs) do { } while (0) |
| 30 | #define grab_fpu(regs) do { } while (0) |
| 31 | #define fpu_state_restore(regs) do { } while (0) |
| 32 | #define __fpu_state_restore(regs) do { } while (0) |
| 33 | #endif |
| 34 | |
| 35 | struct user_regset; |
| 36 | |
| 37 | extern int do_fpu_inst(unsigned short, struct pt_regs *); |
| 38 | extern int init_fpu(struct task_struct *); |
| 39 | |
| 40 | static inline void __unlazy_fpu(struct task_struct *tsk, struct pt_regs *regs) |
| 41 | { |
| 42 | if (task_thread_info(tsk)->status & TS_USEDFPU) { |
| 43 | task_thread_info(tsk)->status &= ~TS_USEDFPU; |
| 44 | save_fpu(tsk); |
| 45 | release_fpu(regs); |
| 46 | } else |
| 47 | tsk->thread.fpu_counter = 0; |
| 48 | } |
| 49 | |
| 50 | static inline void unlazy_fpu(struct task_struct *tsk, struct pt_regs *regs) |
| 51 | { |
| 52 | preempt_disable(); |
| 53 | __unlazy_fpu(tsk, regs); |
| 54 | preempt_enable(); |
| 55 | } |
| 56 | |
| 57 | static inline void clear_fpu(struct task_struct *tsk, struct pt_regs *regs) |
| 58 | { |
| 59 | preempt_disable(); |
| 60 | if (task_thread_info(tsk)->status & TS_USEDFPU) { |
| 61 | task_thread_info(tsk)->status &= ~TS_USEDFPU; |
| 62 | release_fpu(regs); |
| 63 | } |
| 64 | preempt_enable(); |
| 65 | } |
| 66 | |
| 67 | #endif /* __ASSEMBLY__ */ |
| 68 | |
| 69 | #endif /* __ASM_SH_FPU_H */ |
| 70 |
Warning: This file is not a C or C++ file. It does not have highlighting.