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-rw-r--r--src/test/test-unaligned.c172
1 files changed, 172 insertions, 0 deletions
diff --git a/src/test/test-unaligned.c b/src/test/test-unaligned.c
new file mode 100644
index 0000000..96d6b22
--- /dev/null
+++ b/src/test/test-unaligned.c
@@ -0,0 +1,172 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+
+#include "sparse-endian.h"
+#include "unaligned.h"
+#include "util.h"
+
+static uint8_t data[] = {
+ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+ 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
+};
+
+static void test_be(void) {
+ 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);
+}
+
+static void test_le(void) {
+ uint8_t scratch[16];
+
+ assert_se(unaligned_read_le16(&data[0]) == 0x0100);
+ assert_se(unaligned_read_le16(&data[1]) == 0x0201);
+
+ assert_se(unaligned_read_le32(&data[0]) == 0x03020100);
+ assert_se(unaligned_read_le32(&data[1]) == 0x04030201);
+ assert_se(unaligned_read_le32(&data[2]) == 0x05040302);
+ assert_se(unaligned_read_le32(&data[3]) == 0x06050403);
+
+ assert_se(unaligned_read_le64(&data[0]) == 0x0706050403020100);
+ assert_se(unaligned_read_le64(&data[1]) == 0x0807060504030201);
+ assert_se(unaligned_read_le64(&data[2]) == 0x0908070605040302);
+ assert_se(unaligned_read_le64(&data[3]) == 0x0a09080706050403);
+ assert_se(unaligned_read_le64(&data[4]) == 0x0b0a090807060504);
+ assert_se(unaligned_read_le64(&data[5]) == 0x0c0b0a0908070605);
+ assert_se(unaligned_read_le64(&data[6]) == 0x0d0c0b0a09080706);
+ assert_se(unaligned_read_le64(&data[7]) == 0x0e0d0c0b0a090807);
+
+ zero(scratch);
+ unaligned_write_le16(&scratch[0], 0x0100);
+ assert_se(memcmp(&scratch[0], &data[0], sizeof(uint16_t)) == 0);
+ zero(scratch);
+ unaligned_write_le16(&scratch[1], 0x0201);
+ assert_se(memcmp(&scratch[1], &data[1], sizeof(uint16_t)) == 0);
+
+ zero(scratch);
+ unaligned_write_le32(&scratch[0], 0x03020100);
+
+ assert_se(memcmp(&scratch[0], &data[0], sizeof(uint32_t)) == 0);
+ zero(scratch);
+ unaligned_write_le32(&scratch[1], 0x04030201);
+ assert_se(memcmp(&scratch[1], &data[1], sizeof(uint32_t)) == 0);
+ zero(scratch);
+ unaligned_write_le32(&scratch[2], 0x05040302);
+ assert_se(memcmp(&scratch[2], &data[2], sizeof(uint32_t)) == 0);
+ zero(scratch);
+ unaligned_write_le32(&scratch[3], 0x06050403);
+ assert_se(memcmp(&scratch[3], &data[3], sizeof(uint32_t)) == 0);
+
+ zero(scratch);
+ unaligned_write_le64(&scratch[0], 0x0706050403020100);
+ assert_se(memcmp(&scratch[0], &data[0], sizeof(uint64_t)) == 0);
+ zero(scratch);
+ unaligned_write_le64(&scratch[1], 0x0807060504030201);
+ assert_se(memcmp(&scratch[1], &data[1], sizeof(uint64_t)) == 0);
+ zero(scratch);
+ unaligned_write_le64(&scratch[2], 0x0908070605040302);
+ assert_se(memcmp(&scratch[2], &data[2], sizeof(uint64_t)) == 0);
+ zero(scratch);
+ unaligned_write_le64(&scratch[3], 0x0a09080706050403);
+ assert_se(memcmp(&scratch[3], &data[3], sizeof(uint64_t)) == 0);
+ zero(scratch);
+ unaligned_write_le64(&scratch[4], 0x0B0A090807060504);
+ assert_se(memcmp(&scratch[4], &data[4], sizeof(uint64_t)) == 0);
+ zero(scratch);
+ unaligned_write_le64(&scratch[5], 0x0c0b0a0908070605);
+ assert_se(memcmp(&scratch[5], &data[5], sizeof(uint64_t)) == 0);
+ zero(scratch);
+ unaligned_write_le64(&scratch[6], 0x0d0c0b0a09080706);
+ assert_se(memcmp(&scratch[6], &data[6], sizeof(uint64_t)) == 0);
+ zero(scratch);
+ unaligned_write_le64(&scratch[7], 0x0e0d0c0b0a090807);
+ assert_se(memcmp(&scratch[7], &data[7], sizeof(uint64_t)) == 0);
+}
+
+static void test_ne(void) {
+ uint16_t x = 4711;
+ uint32_t y = 123456;
+ uint64_t z = 9876543210;
+
+ /* Note that we don't bother actually testing alignment issues in this function, after all the _ne() functions
+ * are just aliases for the _le() or _be() implementations, which we test extensively above. Hence, in this
+ * function, just ensure that they map to the right version on the local architecture. */
+
+ assert_se(unaligned_read_ne16(&x) == 4711);
+ assert_se(unaligned_read_ne32(&y) == 123456);
+ assert_se(unaligned_read_ne64(&z) == 9876543210);
+
+ unaligned_write_ne16(&x, 1);
+ unaligned_write_ne32(&y, 2);
+ unaligned_write_ne64(&z, 3);
+
+ assert_se(x == 1);
+ assert_se(y == 2);
+ assert_se(z == 3);
+}
+
+int main(int argc, const char *argv[]) {
+ test_be();
+ test_le();
+ test_ne();
+ return 0;
+}
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