392 static int protected_save_fpu_context(struct extctx_layout *extctx)  in protected_save_fpu_context()  argument
395 	struct sctx_info __user *info = extctx->fpu.addr;  in protected_save_fpu_context()
410 		err |= __put_user(extctx->fpu.size, &info->size);  in protected_save_fpu_context()
426 static int protected_restore_fpu_context(struct extctx_layout *extctx)  in protected_restore_fpu_context()  argument
429 	struct sctx_info __user *info = extctx->fpu.addr;  in protected_restore_fpu_context()
461 static int protected_save_lsx_context(struct extctx_layout *extctx)  in protected_save_lsx_context()  argument
464 	struct sctx_info __user *info = extctx->lsx.addr;  in protected_save_lsx_context()
482 		err |= __put_user(extctx->lsx.size, &info->size);  in protected_save_lsx_context()
498 static int protected_restore_lsx_context(struct extctx_layout *extctx)  in protected_restore_lsx_context()  argument
501 	struct sctx_info __user *info = extctx->lsx.addr;  in protected_restore_lsx_context()
536 static int protected_save_lasx_context(struct extctx_layout *extctx)  in protected_save_lasx_context()  argument
539 	struct sctx_info __user *info = extctx->lasx.addr;  in protected_save_lasx_context()
560 		err |= __put_user(extctx->lasx.size, &info->size);  in protected_save_lasx_context()
576 static int protected_restore_lasx_context(struct extctx_layout *extctx)  in protected_restore_lasx_context()  argument
579 	struct sctx_info __user *info = extctx->lasx.addr;  in protected_restore_lasx_context()
618 static int protected_save_lbt_context(struct extctx_layout *extctx)  in protected_save_lbt_context()  argument
621 	struct sctx_info __user *info = extctx->lbt.addr;  in protected_save_lbt_context()
640 		err |= __put_user(extctx->lbt.size, &info->size);  in protected_save_lbt_context()
654 static int protected_restore_lbt_context(struct extctx_layout *extctx)  in protected_restore_lbt_context()  argument
657 	struct sctx_info __user *info = extctx->lbt.addr;  in protected_restore_lbt_context()
689 			    struct extctx_layout *extctx)  in setup_sigcontext()  argument
695 	err |= __put_user(extctx->flags, &sc->sc_flags);  in setup_sigcontext()
701 	if (extctx->lasx.addr)  in setup_sigcontext()
702 		err |= protected_save_lasx_context(extctx);  in setup_sigcontext()
703 	else if (extctx->lsx.addr)  in setup_sigcontext()
704 		err |= protected_save_lsx_context(extctx);  in setup_sigcontext()
705 	else if (extctx->fpu.addr)  in setup_sigcontext()
706 		err |= protected_save_fpu_context(extctx);  in setup_sigcontext()
709 	if (extctx->lbt.addr)  in setup_sigcontext()
710 		err |= protected_save_lbt_context(extctx);  in setup_sigcontext()
714 	info = (struct sctx_info *)extctx->end.addr;  in setup_sigcontext()
721 static int parse_extcontext(struct sigcontext __user *sc, struct extctx_layout *extctx)  in parse_extcontext()  argument
741 			extctx->fpu.addr = info;  in parse_extcontext()
748 			extctx->lsx.addr = info;  in parse_extcontext()
755 			extctx->lasx.addr = info;  in parse_extcontext()
762 			extctx->lbt.addr = info;  in parse_extcontext()
782 	struct extctx_layout extctx;  in restore_sigcontext()  local
784 	memset(&extctx, 0, sizeof(struct extctx_layout));  in restore_sigcontext()
786 	err = __get_user(extctx.flags, &sc->sc_flags);  in restore_sigcontext()
790 	err = parse_extcontext(sc, &extctx);  in restore_sigcontext()
794 	conditional_used_math(extctx.flags & SC_USED_FP);  in restore_sigcontext()
800 	if (!(extctx.flags & SC_USED_FP))  in restore_sigcontext()
810 	if (extctx.lasx.addr)  in restore_sigcontext()
811 		err |= protected_restore_lasx_context(&extctx);  in restore_sigcontext()
812 	else if (extctx.lsx.addr)  in restore_sigcontext()
813 		err |= protected_restore_lsx_context(&extctx);  in restore_sigcontext()
814 	else if (extctx.fpu.addr)  in restore_sigcontext()
815 		err |= protected_restore_fpu_context(&extctx);  in restore_sigcontext()
818 	if (extctx.lbt.addr)  in restore_sigcontext()
819 		err |= protected_restore_lbt_context(&extctx);  in restore_sigcontext()
844 static unsigned long extframe_alloc(struct extctx_layout *extctx,  in extframe_alloc()  argument
855 	extctx->size += layout->size;  in extframe_alloc()
860 static unsigned long setup_extcontext(struct extctx_layout *extctx, unsigned long sp)  in setup_extcontext()  argument
864 	memset(extctx, 0, sizeof(struct extctx_layout));  in setup_extcontext()
866 	extctx->flags = handle_flags();  in setup_extcontext()
870 	extctx->end.addr = (void *)new_sp;  in setup_extcontext()
871 	extctx->end.size = (unsigned int)sizeof(struct sctx_info);  in setup_extcontext()
872 	extctx->size += extctx->end.size;  in setup_extcontext()
874 	if (extctx->flags & SC_USED_FP) {  in setup_extcontext()
876 			new_sp = extframe_alloc(extctx, &extctx->lasx,  in setup_extcontext()
879 			new_sp = extframe_alloc(extctx, &extctx->lsx,  in setup_extcontext()
882 			new_sp = extframe_alloc(extctx, &extctx->fpu,  in setup_extcontext()
888 		new_sp = extframe_alloc(extctx, &extctx->lbt,  in setup_extcontext()
897 				 struct extctx_layout *extctx)  in get_sigframe()  argument
914 	sp = setup_extcontext(extctx, sp);  in get_sigframe()
964 	struct extctx_layout extctx;  in setup_rt_frame()  local
967 	frame = get_sigframe(ksig, regs, &extctx);  in setup_rt_frame()
968 	if (!access_ok(frame, sizeof(*frame) + extctx.size))  in setup_rt_frame()
978 	err |= setup_sigcontext(regs, &frame->rs_uctx.uc_mcontext, &extctx);  in setup_rt_frame()