linux-6.8/lib/memcpy_kunit.c

1 // SPDX-License-Identifier: GPL-2.0
97 	/* Verify argument side-effects aren't repeated. */  in memcpy_test()
104 	compare("argument side-effects", dest, three);  in memcpy_test()
135 	struct some_bytes overlap = {  in memmove_test()  local
171 	/* Verify argument side-effects aren't repeated. */  in memmove_test()
178 	compare("argument side-effects", dest, five);  in memmove_test()
181 	ptr = &overlap.data[2];  in memmove_test()
182 	memmove(ptr, overlap.data, 5);  in memmove_test()
183 	compare("overlapping write", overlap, overlap_expected);  in memmove_test()
195 		memchr(larger_array + 1, 0xaa, ARRAY_SIZE(larger_array) - 1));  in memmove_test()
201 	KUNIT_ASSERT_NULL(test, memchr(larger_array + 1, 0xBBu, 256 - 1));  in memmove_test()
203 		memchr(larger_array + 257, 0xBBu, ARRAY_SIZE(larger_array) - 257));  in memmove_test()
273 	/* Verify argument side-effects aren't repeated. */  in memset_test()
281 	compare("argument side-effects", dest, three);  in memset_test()
318 	/* Make sure we have non-zero edges. */  in init_large()
320 	set_random_nonzero(test, &large_src[ARRAY_SIZE(large_src) - 1]);  in init_large()
334 	/* Copy a growing number of non-overlapping bytes ... */  in copy_large_test()
339 			int right_zero_size = ARRAY_SIZE(large_dst) - right_zero_pos;  in copy_large_test()
356 			/* Are we byte-for-byte exact across the copy? */  in copy_large_test()
382  * take single index steps for at least the first "inc"-many indexes
383  * from the "start" and at least the last "inc"-many indexes before
384  * the "end". When in the middle, take full "inc"-wide steps. For
391 	end -= inc;  in next_step()
422 		right_zero_size = ARRAY_SIZE(large_dst) - right_zero_pos;  in inner_loop()
426 		src_size = d_off - s_off;  in inner_loop()
432 		right_zero_size = ARRAY_SIZE(large_dst) - right_zero_pos;  in inner_loop()
435 		src_orig_pos = src_pos - s_off;  in inner_loop()
436 		src_size = right_zero_pos - src_pos;  in inner_loop()
439 	/* Check non-overlapping source is unchanged.*/  in inner_loop()
458 	memset(&large_dst[pos], 0, right_zero_pos - pos);  in inner_loop()
464 	 * Running all possible offset and overlap combinations takes a  in memmove_overlap_test()
465 	 * very long time. Instead, only check up to 128 bytes offset  in memmove_overlap_test()
485 			int s_start = max(d_off - bytes, 0);  in memmove_overlap_test()