87 static void prepare_setup_sigcontext(struct task_struct *tsk)  in prepare_setup_sigcontext()  argument
91 	if (tsk->thread.used_vr)  in prepare_setup_sigcontext()
92 		flush_altivec_to_thread(tsk);  in prepare_setup_sigcontext()
94 		tsk->thread.vrsave = mfspr(SPRN_VRSAVE);  in prepare_setup_sigcontext()
97 	flush_fp_to_thread(tsk);  in prepare_setup_sigcontext()
100 	if (tsk->thread.used_vsr)  in prepare_setup_sigcontext()
101 		flush_vsx_to_thread(tsk);  in prepare_setup_sigcontext()
109 #define unsafe_setup_sigcontext(sc, tsk, signr, set, handler, ctx_has_vsx_region, label)\  argument
111 	if (__unsafe_setup_sigcontext(sc, tsk, signr, set, handler, ctx_has_vsx_region))\
115 					struct task_struct *tsk, int signr, sigset_t *set,  in __unsafe_setup_sigcontext()  argument
129 	struct pt_regs *regs = tsk->thread.regs;  in __unsafe_setup_sigcontext()
134 	BUG_ON(tsk != current);  in __unsafe_setup_sigcontext()
140 	if (tsk->thread.used_vr) {  in __unsafe_setup_sigcontext()
142 		unsafe_copy_to_user(v_regs, &tsk->thread.vr_state,  in __unsafe_setup_sigcontext()
152 	unsafe_put_user(tsk->thread.vrsave, (u32 __user *)&v_regs[33], efault_out);  in __unsafe_setup_sigcontext()
157 	unsafe_copy_fpr_to_user(&sc->fp_regs, tsk, efault_out);  in __unsafe_setup_sigcontext()
170 	if (tsk->thread.used_vsr && ctx_has_vsx_region) {  in __unsafe_setup_sigcontext()
172 		unsafe_copy_vsx_to_user(v_regs, tsk, efault_out);  in __unsafe_setup_sigcontext()
208 				 struct task_struct *tsk,  in setup_tm_sigcontexts()  argument
224 	struct pt_regs *regs = tsk->thread.regs;  in setup_tm_sigcontexts()
227 	BUG_ON(tsk != current);  in setup_tm_sigcontexts()
237 	msr |= tsk->thread.ckpt_regs.msr & (MSR_FP | MSR_VEC | MSR_VSX);  in setup_tm_sigcontexts()
244 	if (tsk->thread.used_vr) {  in setup_tm_sigcontexts()
246 		err |= __copy_to_user(v_regs, &tsk->thread.ckvr_state,  in setup_tm_sigcontexts()
253 					      &tsk->thread.vr_state,  in setup_tm_sigcontexts()
257 					      &tsk->thread.ckvr_state,  in setup_tm_sigcontexts()
269 		tsk->thread.ckvrsave = mfspr(SPRN_VRSAVE);  in setup_tm_sigcontexts()
270 	err |= __put_user(tsk->thread.ckvrsave, (u32 __user *)&v_regs[33]);  in setup_tm_sigcontexts()
272 		err |= __put_user(tsk->thread.vrsave,  in setup_tm_sigcontexts()
275 		err |= __put_user(tsk->thread.ckvrsave,  in setup_tm_sigcontexts()
284 	err |= copy_ckfpr_to_user(&sc->fp_regs, tsk);  in setup_tm_sigcontexts()
286 		err |= copy_fpr_to_user(&tm_sc->fp_regs, tsk);  in setup_tm_sigcontexts()
288 		err |= copy_ckfpr_to_user(&tm_sc->fp_regs, tsk);  in setup_tm_sigcontexts()
296 	if (tsk->thread.used_vsr) {  in setup_tm_sigcontexts()
300 		err |= copy_ckvsx_to_user(v_regs, tsk);  in setup_tm_sigcontexts()
303 			err |= copy_vsx_to_user(tm_v_regs, tsk);  in setup_tm_sigcontexts()
305 			err |= copy_ckvsx_to_user(tm_v_regs, tsk);  in setup_tm_sigcontexts()
318 			      &tsk->thread.ckpt_regs, GP_REGS_SIZE);  in setup_tm_sigcontexts()
333 #define unsafe_restore_sigcontext(tsk, set, sig, sc, label) do {	\  argument
334 	if (__unsafe_restore_sigcontext(tsk, set, sig, sc))		\
337 static long notrace __unsafe_restore_sigcontext(struct task_struct *tsk, sigset_t *set,  in __unsafe_restore_sigcontext()  argument
345 	struct pt_regs *regs = tsk->thread.regs;  in __unsafe_restore_sigcontext()
350 	BUG_ON(tsk != current);  in __unsafe_restore_sigcontext()
395 		unsafe_copy_from_user(&tsk->thread.vr_state, v_regs,  in __unsafe_restore_sigcontext()
397 		tsk->thread.used_vr = true;  in __unsafe_restore_sigcontext()
398 	} else if (tsk->thread.used_vr) {  in __unsafe_restore_sigcontext()
399 		memset(&tsk->thread.vr_state, 0, 33 * sizeof(vector128));  in __unsafe_restore_sigcontext()
403 		unsafe_get_user(tsk->thread.vrsave, (u32 __user *)&v_regs[33], efault_out);  in __unsafe_restore_sigcontext()
405 		tsk->thread.vrsave = 0;  in __unsafe_restore_sigcontext()
407 		mtspr(SPRN_VRSAVE, tsk->thread.vrsave);  in __unsafe_restore_sigcontext()
410 	unsafe_copy_fpr_from_user(tsk, &sc->fp_regs, efault_out);  in __unsafe_restore_sigcontext()
419 		unsafe_copy_vsx_from_user(tsk, v_regs, efault_out);  in __unsafe_restore_sigcontext()
420 		tsk->thread.used_vsr = true;  in __unsafe_restore_sigcontext()
423 			tsk->thread.fp_state.fpr[i][TS_VSRLOWOFFSET] = 0;  in __unsafe_restore_sigcontext()
437 static long restore_tm_sigcontexts(struct task_struct *tsk,  in restore_tm_sigcontexts()  argument
446 	struct pt_regs *regs = tsk->thread.regs;  in restore_tm_sigcontexts()
451 	BUG_ON(tsk != current);  in restore_tm_sigcontexts()
458 	err |= __copy_from_user(&tsk->thread.ckpt_regs, sc->gp_regs,  in restore_tm_sigcontexts()
470 	err |= __get_user(tsk->thread.tm_tfhar, &sc->gp_regs[PT_NIP]);  in restore_tm_sigcontexts()
486 	err |= __get_user(tsk->thread.ckpt_regs.ctr,  in restore_tm_sigcontexts()
488 	err |= __get_user(tsk->thread.ckpt_regs.link,  in restore_tm_sigcontexts()
490 	err |= __get_user(tsk->thread.ckpt_regs.xer,  in restore_tm_sigcontexts()
492 	err |= __get_user(tsk->thread.ckpt_regs.ccr,  in restore_tm_sigcontexts()
519 		err |= __copy_from_user(&tsk->thread.ckvr_state, v_regs,  in restore_tm_sigcontexts()
521 		err |= __copy_from_user(&tsk->thread.vr_state, tm_v_regs,  in restore_tm_sigcontexts()
525 	else if (tsk->thread.used_vr) {  in restore_tm_sigcontexts()
526 		memset(&tsk->thread.vr_state, 0, 33 * sizeof(vector128));  in restore_tm_sigcontexts()
527 		memset(&tsk->thread.ckvr_state, 0, 33 * sizeof(vector128));  in restore_tm_sigcontexts()
531 		err |= __get_user(tsk->thread.ckvrsave,  in restore_tm_sigcontexts()
533 		err |= __get_user(tsk->thread.vrsave,  in restore_tm_sigcontexts()
537 		tsk->thread.vrsave = 0;  in restore_tm_sigcontexts()
538 		tsk->thread.ckvrsave = 0;  in restore_tm_sigcontexts()
541 		mtspr(SPRN_VRSAVE, tsk->thread.vrsave);  in restore_tm_sigcontexts()
544 	err |= copy_fpr_from_user(tsk, &tm_sc->fp_regs);  in restore_tm_sigcontexts()
545 	err |= copy_ckfpr_from_user(tsk, &sc->fp_regs);  in restore_tm_sigcontexts()
555 		err |= copy_vsx_from_user(tsk, tm_v_regs);  in restore_tm_sigcontexts()
556 		err |= copy_ckvsx_from_user(tsk, v_regs);  in restore_tm_sigcontexts()
557 		tsk->thread.used_vsr = true;  in restore_tm_sigcontexts()
560 			tsk->thread.fp_state.fpr[i][TS_VSRLOWOFFSET] = 0;  in restore_tm_sigcontexts()
561 			tsk->thread.ckfp_state.fpr[i][TS_VSRLOWOFFSET] = 0;  in restore_tm_sigcontexts()
567 	tsk->thread.tm_texasr |= TEXASR_FS;  in restore_tm_sigcontexts()
597 	tm_recheckpoint(&tsk->thread);  in restore_tm_sigcontexts()
601 		load_fp_state(&tsk->thread.fp_state);  in restore_tm_sigcontexts()
602 		regs_set_return_msr(regs, regs->msr | (MSR_FP | tsk->thread.fpexc_mode));  in restore_tm_sigcontexts()
605 		load_vr_state(&tsk->thread.vr_state);  in restore_tm_sigcontexts()
614 static long restore_tm_sigcontexts(struct task_struct *tsk, struct sigcontext __user *sc,  in restore_tm_sigcontexts()  argument
858 		struct task_struct *tsk)  in handle_rt_signal64()  argument
863 	struct pt_regs *regs = tsk->thread.regs;  in handle_rt_signal64()
867 	frame = get_sigframe(ksig, tsk, sizeof(*frame), 0);  in handle_rt_signal64()
874 		prepare_setup_sigcontext(tsk);  in handle_rt_signal64()
897 					    tsk, ksig->sig, NULL,  in handle_rt_signal64()
908 		unsafe_setup_sigcontext(&frame->uc.uc_mcontext, tsk, ksig->sig,  in handle_rt_signal64()
921 	tsk->thread.fp_state.fpscr = 0;  in handle_rt_signal64()
924 	if (tsk->mm->context.vdso) {  in handle_rt_signal64()
925 		regs_set_return_ip(regs, VDSO64_SYMBOL(tsk->mm->context.vdso, sigtramp_rt64));  in handle_rt_signal64()