1 /* 2 * Interprocess communication macros. 3 * 4 * Copyright (C) 2019 Paul Boddie <paul@boddie.org.uk> 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License as 8 * published by the Free Software Foundation; either version 2 of 9 * the License, or (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA 20 */ 21 22 #pragma once 23 24 /* Count the size of an array. */ 25 26 #define VA_ARGCOUNT(TYPE, ARGS) (sizeof(ARGS) / sizeof(TYPE)) 27 28 /* Prepare an array from a variable argument list. */ 29 30 #define VA_ARGLIST(TYPE, ...) ((TYPE []) {__VA_ARGS__}) 31 32 /* Assign array members. */ 33 34 #define ARRAY_ASSIGN(TO, TYPE, ...) \ 35 memcpy(TO, VA_ARGLIST(TYPE, __VA_ARGS__), \ 36 sizeof(VA_ARGLIST(TYPE, __VA_ARGS__))) 37 38 #define ipc_set_registers(TO, ...) ARRAY_ASSIGN(TO, l4_umword_t, __VA_ARGS__)