36 	struct task_struct *tsk = current;  in fpu_exception()  local
45 	if (!is_using_fpu(tsk))  in fpu_exception()
52 	info.si_addr = (void *) tsk->thread.uregs->pc;  in fpu_exception()
55 	unlazy_fpu(tsk);  in fpu_exception()
57 	fpcr = tsk->thread.fpu_state.fpcr;  in fpu_exception()
68 	force_sig_info(SIGFPE, &info, tsk);  in fpu_exception()
76 	struct task_struct *tsk = current;  in fpu_setup_sigcontext()  local
78 	if (!is_using_fpu(tsk))  in fpu_setup_sigcontext()
88 	if (tsk->thread.fpu_flags & THREAD_HAS_FPU) {  in fpu_setup_sigcontext()
89 		fpu_save(&tsk->thread.fpu_state);  in fpu_setup_sigcontext()
90 		tsk->thread.uregs->epsw &= ~EPSW_FE;  in fpu_setup_sigcontext()
91 		tsk->thread.fpu_flags &= ~THREAD_HAS_FPU;  in fpu_setup_sigcontext()
94 	if (fpu_state_owner == tsk) {  in fpu_setup_sigcontext()
95 		fpu_save(&tsk->thread.fpu_state);  in fpu_setup_sigcontext()
104 	clear_using_fpu(tsk);  in fpu_setup_sigcontext()
108 			 &tsk->thread.fpu_state,  in fpu_setup_sigcontext()
119 void fpu_kill_state(struct task_struct *tsk)  in fpu_kill_state()  argument
125 	if (tsk->thread.fpu_flags & THREAD_HAS_FPU) {  in fpu_kill_state()
126 		tsk->thread.uregs->epsw &= ~EPSW_FE;  in fpu_kill_state()
127 		tsk->thread.fpu_flags &= ~THREAD_HAS_FPU;  in fpu_kill_state()
130 	if (fpu_state_owner == tsk) {  in fpu_kill_state()
139 	clear_using_fpu(tsk);  in fpu_kill_state()
147 	struct task_struct *tsk = current;  in fpu_restore_sigcontext()  local
151 	ret = copy_from_user(&tsk->thread.fpu_state, fpucontext,  in fpu_restore_sigcontext()
155 		set_using_fpu(tsk);  in fpu_restore_sigcontext()
165 	struct task_struct *tsk = current;  in dump_fpu()  local
168 	fpvalid = is_using_fpu(tsk);  in dump_fpu()
170 		unlazy_fpu(tsk);  in dump_fpu()
171 		memcpy(fpreg, &tsk->thread.fpu_state, sizeof(*fpreg));  in dump_fpu()