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 struct ksignal;
17 int ia32_setup_rt_frame(int sig, struct ksignal *ksig,
18 			compat_sigset_t *set, struct pt_regs *regs);
19 int ia32_setup_frame(int sig, struct ksignal *ksig,
20 		     compat_sigset_t *set, struct pt_regs *regs);
21 #else
22 # define user_i387_ia32_struct	user_i387_struct
23 # define user32_fxsr_struct	user_fxsr_struct
24 # define ia32_setup_frame	__setup_frame
25 # define ia32_setup_rt_frame	__setup_rt_frame
26 #endif
27 
28 extern void convert_from_fxsr(struct user_i387_ia32_struct *env,
29 			      struct task_struct *tsk);
30 extern void convert_to_fxsr(struct fxregs_state *fxsave,
31 			    const struct user_i387_ia32_struct *env);
32 
33 unsigned long
34 fpu__alloc_mathframe(unsigned long sp, int ia32_frame,
35 		     unsigned long *buf_fx, unsigned long *size);
36 
37 unsigned long fpu__get_fpstate_size(void);
38 
39 extern bool copy_fpstate_to_sigframe(void __user *buf, void __user *fp, int size);
40 extern void fpu__clear_user_states(struct fpu *fpu);
41 extern bool fpu__restore_sig(void __user *buf, int ia32_frame);
42 
43 extern void restore_fpregs_from_fpstate(struct fpstate *fpstate, u64 mask);
44 
45 extern bool copy_fpstate_to_sigframe(void __user *buf, void __user *fp, int size);
46 
47 #endif /* _ASM_X86_FPU_SIGNAL_H */
48