23 static inline int check_for_xstate(struct fxregs_state __user *buf,  in check_for_xstate()  argument
31 	if (__copy_from_user(fx_sw, &buf->sw_reserved[0], sizeof(*fx_sw)))  in check_for_xstate()
57 static inline int save_fsave_header(struct task_struct *tsk, void __user *buf)  in save_fsave_header()  argument
62 		struct _fpstate_32 __user *fp = buf;  in save_fsave_header()
66 		if (__copy_to_user(buf, &env, sizeof(env)) ||  in save_fsave_header()
71 		struct fregs_state __user *fp = buf;  in save_fsave_header()
80 static inline int save_xstate_epilog(void __user *buf, int ia32_frame)  in save_xstate_epilog()  argument
82 	struct xregs_state __user *x = buf;  in save_xstate_epilog()
95 			  (__u32 *)(buf + fpu_user_xstate_size));  in save_xstate_epilog()
121 static inline int copy_fpregs_to_sigframe(struct xregs_state __user *buf)  in copy_fpregs_to_sigframe()  argument
126 		err = copy_xregs_to_user(buf);  in copy_fpregs_to_sigframe()
128 		err = copy_fxregs_to_user((struct fxregs_state __user *) buf);  in copy_fpregs_to_sigframe()
130 		err = copy_fregs_to_user((struct fregs_state __user *) buf);  in copy_fpregs_to_sigframe()
132 	if (unlikely(err) && __clear_user(buf, fpu_user_xstate_size))  in copy_fpregs_to_sigframe()
157 int copy_fpstate_to_sigframe(void __user *buf, void __user *buf_fx, int size)  in copy_fpstate_to_sigframe()  argument
162 	int ia32_fxstate = (buf != buf_fx);  in copy_fpstate_to_sigframe()
167 	if (!access_ok(VERIFY_WRITE, buf, size))  in copy_fpstate_to_sigframe()
173 			(struct _fpstate_32 __user *) buf) ? -1 : 1;  in copy_fpstate_to_sigframe()
200 	if ((ia32_fxstate || !use_fxsr()) && save_fsave_header(tsk, buf))  in copy_fpstate_to_sigframe()
248 static inline int copy_user_to_fpregs_zeroing(void __user *buf, u64 xbv, int fx_only)  in copy_user_to_fpregs_zeroing()  argument
251 		if ((unsigned long)buf % 64 || fx_only) {  in copy_user_to_fpregs_zeroing()
254 			return copy_user_to_fxregs(buf);  in copy_user_to_fpregs_zeroing()
259 			return copy_user_to_xregs(buf, xbv);  in copy_user_to_fpregs_zeroing()
262 		return copy_user_to_fxregs(buf);  in copy_user_to_fpregs_zeroing()
264 		return copy_user_to_fregs(buf);  in copy_user_to_fpregs_zeroing()
267 static int __fpu__restore_sig(void __user *buf, void __user *buf_fx, int size)  in __fpu__restore_sig()  argument
269 	int ia32_fxstate = (buf != buf_fx);  in __fpu__restore_sig()
279 	if (!buf) {  in __fpu__restore_sig()
284 	if (!access_ok(VERIFY_READ, buf, size))  in __fpu__restore_sig()
292 				       NULL, buf) != 0;  in __fpu__restore_sig()
339 		if (err || __copy_from_user(&env, buf, sizeof(env))) {  in __fpu__restore_sig()
377 int fpu__restore_sig(void __user *buf, int ia32_frame)  in fpu__restore_sig()  argument
379 	void __user *buf_fx = buf;  in fpu__restore_sig()
383 		buf_fx = buf + sizeof(struct fregs_state);  in fpu__restore_sig()
387 	return __fpu__restore_sig(buf, buf_fx, size);  in fpu__restore_sig()