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 #endif /* _ASM_X86_FPU_SIGNAL_H */ 45