/*** This file is part of systemd Copyright 2014 Tom Gundersen systemd is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. systemd is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with systemd; If not, see <http://www.gnu.org/licenses/>. ***/ #include "unaligned.h" #include "sparse-endian.h" #include "util.h" static uint8_t data[] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, }; int main(int argc, const char *argv[]) { uint8_t scratch[16]; assert_se(unaligned_read_be16(&data[0]) == 0x0001); assert_se(unaligned_read_be16(&data[1]) == 0x0102); assert_se(unaligned_read_be32(&data[0]) == 0x00010203); assert_se(unaligned_read_be32(&data[1]) == 0x01020304); assert_se(unaligned_read_be32(&data[2]) == 0x02030405); assert_se(unaligned_read_be32(&data[3]) == 0x03040506); assert_se(unaligned_read_be64(&data[0]) == 0x0001020304050607); assert_se(unaligned_read_be64(&data[1]) == 0x0102030405060708); assert_se(unaligned_read_be64(&data[2]) == 0x0203040506070809); assert_se(unaligned_read_be64(&data[3]) == 0x030405060708090a); assert_se(unaligned_read_be64(&data[4]) == 0x0405060708090a0b); assert_se(unaligned_read_be64(&data[5]) == 0x05060708090a0b0c); assert_se(unaligned_read_be64(&data[6]) == 0x060708090a0b0c0d); assert_se(unaligned_read_be64(&data[7]) == 0x0708090a0b0c0d0e); zero(scratch); unaligned_write_be16(&scratch[0], 0x0001); assert_se(memcmp(&scratch[0], &data[0], sizeof(uint16_t)) == 0); zero(scratch); unaligned_write_be16(&scratch[1], 0x0102); assert_se(memcmp(&scratch[1], &data[1], sizeof(uint16_t)) == 0); zero(scratch); unaligned_write_be32(&scratch[0], 0x00010203); assert_se(memcmp(&scratch[0], &data[0], sizeof(uint32_t)) == 0); zero(scratch); unaligned_write_be32(&scratch[1], 0x01020304); assert_se(memcmp(&scratch[1], &data[1], sizeof(uint32_t)) == 0); zero(scratch); unaligned_write_be32(&scratch[2], 0x02030405); assert_se(memcmp(&scratch[2], &data[2], sizeof(uint32_t)) == 0); zero(scratch); unaligned_write_be32(&scratch[3], 0x03040506); assert_se(memcmp(&scratch[3], &data[3], sizeof(uint32_t)) == 0); zero(scratch); unaligned_write_be64(&scratch[0], 0x0001020304050607); assert_se(memcmp(&scratch[0], &data[0], sizeof(uint64_t)) == 0); zero(scratch); unaligned_write_be64(&scratch[1], 0x0102030405060708); assert_se(memcmp(&scratch[1], &data[1], sizeof(uint64_t)) == 0); zero(scratch); unaligned_write_be64(&scratch[2], 0x0203040506070809); assert_se(memcmp(&scratch[2], &data[2], sizeof(uint64_t)) == 0); zero(scratch); unaligned_write_be64(&scratch[3], 0x030405060708090a); assert_se(memcmp(&scratch[3], &data[3], sizeof(uint64_t)) == 0); zero(scratch); unaligned_write_be64(&scratch[4], 0x0405060708090a0b); assert_se(memcmp(&scratch[4], &data[4], sizeof(uint64_t)) == 0); zero(scratch); unaligned_write_be64(&scratch[5], 0x05060708090a0b0c); assert_se(memcmp(&scratch[5], &data[5], sizeof(uint64_t)) == 0); zero(scratch); unaligned_write_be64(&scratch[6], 0x060708090a0b0c0d); assert_se(memcmp(&scratch[6], &data[6], sizeof(uint64_t)) == 0); zero(scratch); unaligned_write_be64(&scratch[7], 0x0708090a0b0c0d0e); assert_se(memcmp(&scratch[7], &data[7], sizeof(uint64_t)) == 0); }