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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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
10static inline void release_fpu(struct pt_regs *regs)
11{
12 regs->sr |= SR_FD;
13}
14
15static inline void grab_fpu(struct pt_regs *regs)
16{
17 regs->sr &= ~SR_FD;
18}
19
20struct task_struct;
21
22extern 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
29extern int do_fpu_inst(unsigned short, struct pt_regs *);
30
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 */