888 static int s390_regs_get(struct task_struct *target,  in s390_regs_get()  argument
893 	if (target == current)  in s390_regs_get()
894 		save_access_regs(target->thread.acrs);  in s390_regs_get()
899 			*k++ = __peek_user(target, pos);  in s390_regs_get()
906 			if (__put_user(__peek_user(target, pos), u++))  in s390_regs_get()
915 static int s390_regs_set(struct task_struct *target,  in s390_regs_set()  argument
922 	if (target == current)  in s390_regs_set()
923 		save_access_regs(target->thread.acrs);  in s390_regs_set()
928 			rc = __poke_user(target, pos, *k++);  in s390_regs_set()
939 			rc = __poke_user(target, pos, word);  in s390_regs_set()
945 	if (rc == 0 && target == current)  in s390_regs_set()
946 		restore_access_regs(target->thread.acrs);  in s390_regs_set()
951 static int s390_fpregs_get(struct task_struct *target,  in s390_fpregs_get()  argument
955 	if (target == current) {  in s390_fpregs_get()
956 		save_fp_ctl(&target->thread.fp_regs.fpc);  in s390_fpregs_get()
957 		save_fp_regs(target->thread.fp_regs.fprs);  in s390_fpregs_get()
958 	} else if (target->thread.vxrs) {  in s390_fpregs_get()
962 			target->thread.fp_regs.fprs[i] =  in s390_fpregs_get()
963 				*(freg_t *)(target->thread.vxrs + i);  in s390_fpregs_get()
966 				   &target->thread.fp_regs, 0, -1);  in s390_fpregs_get()
969 static int s390_fpregs_set(struct task_struct *target,  in s390_fpregs_set()  argument
976 	if (target == current) {  in s390_fpregs_set()
977 		save_fp_ctl(&target->thread.fp_regs.fpc);  in s390_fpregs_set()
978 		save_fp_regs(target->thread.fp_regs.fprs);  in s390_fpregs_set()
983 		u32 ufpc[2] = { target->thread.fp_regs.fpc, 0 };  in s390_fpregs_set()
990 		target->thread.fp_regs.fpc = ufpc[0];  in s390_fpregs_set()
995 					target->thread.fp_regs.fprs,  in s390_fpregs_set()
999 		if (target == current) {  in s390_fpregs_set()
1000 			restore_fp_ctl(&target->thread.fp_regs.fpc);  in s390_fpregs_set()
1001 			restore_fp_regs(target->thread.fp_regs.fprs);  in s390_fpregs_set()
1002 		} else if (target->thread.vxrs) {  in s390_fpregs_set()
1006 				*(freg_t *)(target->thread.vxrs + i) =  in s390_fpregs_set()
1007 					target->thread.fp_regs.fprs[i];  in s390_fpregs_set()
1014 static int s390_last_break_get(struct task_struct *target,  in s390_last_break_get()  argument
1022 			*k = task_thread_info(target)->last_break;  in s390_last_break_get()
1025 			if (__put_user(task_thread_info(target)->last_break, u))  in s390_last_break_get()
1032 static int s390_last_break_set(struct task_struct *target,  in s390_last_break_set()  argument
1040 static int s390_tdb_get(struct task_struct *target,  in s390_tdb_get()  argument
1045 	struct pt_regs *regs = task_pt_regs(target);  in s390_tdb_get()
1050 	data = target->thread.trap_tdb;  in s390_tdb_get()
1054 static int s390_tdb_set(struct task_struct *target,  in s390_tdb_set()  argument
1062 static int s390_vxrs_low_get(struct task_struct *target,  in s390_vxrs_low_get()  argument
1072 	if (target->thread.vxrs) {  in s390_vxrs_low_get()
1073 		if (target == current)  in s390_vxrs_low_get()
1074 			save_vx_regs(target->thread.vxrs);  in s390_vxrs_low_get()
1076 			vxrs[i] = *((__u64 *)(target->thread.vxrs + i) + 1);  in s390_vxrs_low_get()
1082 static int s390_vxrs_low_set(struct task_struct *target,  in s390_vxrs_low_set()  argument
1092 	if (!target->thread.vxrs) {  in s390_vxrs_low_set()
1093 		rc = alloc_vector_registers(target);  in s390_vxrs_low_set()
1096 	} else if (target == current)  in s390_vxrs_low_set()
1097 		save_vx_regs(target->thread.vxrs);  in s390_vxrs_low_set()
1102 			*((__u64 *)(target->thread.vxrs + i) + 1) = vxrs[i];  in s390_vxrs_low_set()
1103 		if (target == current)  in s390_vxrs_low_set()
1104 			restore_vx_regs(target->thread.vxrs);  in s390_vxrs_low_set()
1110 static int s390_vxrs_high_get(struct task_struct *target,  in s390_vxrs_high_get()  argument
1119 	if (target->thread.vxrs) {  in s390_vxrs_high_get()
1120 		if (target == current)  in s390_vxrs_high_get()
1121 			save_vx_regs(target->thread.vxrs);  in s390_vxrs_high_get()
1122 		memcpy(vxrs, target->thread.vxrs + __NUM_VXRS_LOW,  in s390_vxrs_high_get()
1129 static int s390_vxrs_high_set(struct task_struct *target,  in s390_vxrs_high_set()  argument
1138 	if (!target->thread.vxrs) {  in s390_vxrs_high_set()
1139 		rc = alloc_vector_registers(target);  in s390_vxrs_high_set()
1142 	} else if (target == current)  in s390_vxrs_high_set()
1143 		save_vx_regs(target->thread.vxrs);  in s390_vxrs_high_set()
1146 				target->thread.vxrs + __NUM_VXRS_LOW, 0, -1);  in s390_vxrs_high_set()
1147 	if (rc == 0 && target == current)  in s390_vxrs_high_set()
1148 		restore_vx_regs(target->thread.vxrs);  in s390_vxrs_high_set()
1153 static int s390_system_call_get(struct task_struct *target,  in s390_system_call_get()  argument
1158 	unsigned int *data = &task_thread_info(target)->system_call;  in s390_system_call_get()
1163 static int s390_system_call_set(struct task_struct *target,  in s390_system_call_set()  argument
1168 	unsigned int *data = &task_thread_info(target)->system_call;  in s390_system_call_set()
1240 static int s390_compat_regs_get(struct task_struct *target,  in s390_compat_regs_get()  argument
1245 	if (target == current)  in s390_compat_regs_get()
1246 		save_access_regs(target->thread.acrs);  in s390_compat_regs_get()
1251 			*k++ = __peek_user_compat(target, pos);  in s390_compat_regs_get()
1258 			if (__put_user(__peek_user_compat(target, pos), u++))  in s390_compat_regs_get()
1267 static int s390_compat_regs_set(struct task_struct *target,  in s390_compat_regs_set()  argument
1274 	if (target == current)  in s390_compat_regs_set()
1275 		save_access_regs(target->thread.acrs);  in s390_compat_regs_set()
1280 			rc = __poke_user_compat(target, pos, *k++);  in s390_compat_regs_set()
1291 			rc = __poke_user_compat(target, pos, word);  in s390_compat_regs_set()
1297 	if (rc == 0 && target == current)  in s390_compat_regs_set()
1298 		restore_access_regs(target->thread.acrs);  in s390_compat_regs_set()
1303 static int s390_compat_regs_high_get(struct task_struct *target,  in s390_compat_regs_high_get()  argument
1311 		&task_pt_regs(target)->gprs[pos / sizeof(compat_ulong_t)];  in s390_compat_regs_high_get()
1331 static int s390_compat_regs_high_set(struct task_struct *target,  in s390_compat_regs_high_set()  argument
1340 		&task_pt_regs(target)->gprs[pos / sizeof(compat_ulong_t)];  in s390_compat_regs_high_set()
1364 static int s390_compat_last_break_get(struct task_struct *target,  in s390_compat_last_break_get()  argument
1372 		last_break = task_thread_info(target)->last_break;  in s390_compat_last_break_get()
1385 static int s390_compat_last_break_set(struct task_struct *target,  in s390_compat_last_break_set()  argument