1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * x86 FPU signal frame handling methods:
4  */
5 #ifndef _ASM_X86_FPU_SIGNAL_H
6 #define _ASM_X86_FPU_SIGNAL_H
7 
8 #include <linux/compat.h>
9 #include <linux/user.h>
10 
11 #include <asm/fpu/types.h>
12 
13 #ifdef CONFIG_X86_64
14 # include <uapi/asm/sigcontext.h>
15 # include <asm/user32.h>
16 #else
17 # define user_i387_ia32_struct	user_i387_struct
18 # define user32_fxsr_struct	user_fxsr_struct
19 #endif
20 
21 extern void convert_from_fxsr(struct user_i387_ia32_struct *env,
22 			      struct task_struct *tsk);
23 extern void convert_to_fxsr(struct fxregs_state *fxsave,
24 			    const struct user_i387_ia32_struct *env);
25 
26 unsigned long
27 fpu__alloc_mathframe(unsigned long sp, int ia32_frame,
28 		     unsigned long *buf_fx, unsigned long *size);
29 
30 unsigned long fpu__get_fpstate_size(void);
31 
32 extern bool copy_fpstate_to_sigframe(void __user *buf, void __user *fp, int size);
33 extern void fpu__clear_user_states(struct fpu *fpu);
34 extern bool fpu__restore_sig(void __user *buf, int ia32_frame);
35 
36 extern void restore_fpregs_from_fpstate(struct fpstate *fpstate, u64 mask);
37 #endif /* _ASM_X86_FPU_SIGNAL_H */
38