From d585ba47fcda99fdf228e3e45a01b11a15efbc5a Mon Sep 17 00:00:00 2001 From: Noah Goldstein Date: Mon, 1 Nov 2021 00:49:48 -0500 Subject: string: Make tests birdirectional test-memcpy.c This commit updates the memcpy tests to test both dst > src and dst < src. This is because there is logic in the code based on the Signed-off-by: Noah Goldstein Reviewed-by: H.J. Lu --- string/test-memmove.c | 75 +++++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 73 insertions(+), 2 deletions(-) (limited to 'string/test-memmove.c') diff --git a/string/test-memmove.c b/string/test-memmove.c index a0ce8b0334..5c6d1579e3 100644 --- a/string/test-memmove.c +++ b/string/test-memmove.c @@ -100,11 +100,11 @@ do_test (size_t align1, size_t align2, size_t len) size_t i, j; char *s1, *s2; - align1 &= 63; + align1 &= (getpagesize() - 1); if (align1 + len >= page_size) return; - align2 &= 63; + align2 &= (getpagesize() - 1); if (align2 + len >= page_size) return; @@ -355,6 +355,51 @@ do_test3 (size_t bytes_move, size_t offset) munmap ((void *) buf, size); } +static void +do_test4 (size_t bytes_move, size_t offset1, size_t offset2) +{ + size_t size, repeats, i; + uint8_t *buf, *dst, *src; + + size = bytes_move + MAX(offset1, offset2); + buf = mmap(NULL, size, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANON, -1, 0); + + if (buf == MAP_FAILED) + error (EXIT_UNSUPPORTED, errno, "mmap failed"); + + dst = &buf[offset1]; + src = &buf[offset2]; + for (repeats = 0; repeats < 2; ++repeats) + { + FOR_EACH_IMPL (impl, 0) + { + for (i = 0; i < bytes_move; i++) + src[i] = (uint8_t) i; +#ifdef TEST_BCOPY + CALL (impl, (char *) src, (char *) dst, bytes_move); +#else + CALL (impl, (char *) dst, (char *) src, bytes_move); +#endif + for (i = 0; i < bytes_move; i++) + { + if (dst[i] != (uint8_t) i) + { + error (0, 0, + "Wrong result in function %s dst \"%p\" src \"%p\" offset \"%zd\"", + impl->name, dst, buf, i); + ret = 1; + break; + } + } + } + dst = &buf[offset2]; + src = &buf[offset1]; + } + munmap ((void *) buf, size); +} + + int test_main (void) { @@ -395,13 +440,39 @@ test_main (void) do_random_tests (); + do_test2 (0); do_test2 (33); + do_test2 (0x200000 - 1); do_test2 (0x200000); + do_test2 (0x200000 + 1); + do_test2 (0x1000000 - 1); + do_test2 (0x1000000); + do_test2 (0x1000000 + 1); do_test2 (0x4000000 - 1); do_test2 (0x4000000); + do_test2 (0x4000000 + 1); /* Copy 16KB data. */ do_test3 (16384, 3); + for (i = 4096; i <= 16384; i <<= 1) + { + do_test4 (i, 0, i); + do_test4 (i, 0, i - 1); + do_test4 (i, 0, i + 1); + do_test4 (i, 63, i + 63); + do_test4 (i, 63, i + 64); + do_test4 (i, 63, i); + + do_test4 (i, 0, 1); + do_test4 (i, 0, 15); + do_test4 (i, 0, 31); + do_test4 (i, 0, 63); + do_test4 (i, 0, 64); + do_test4 (i, 0, 65); + do_test4 (i, 0, 127); + do_test4 (i, 0, 129); + } + return ret; } -- cgit 1.4.1