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-rw-r--r--string/test-memcpy.c388
1 files changed, 93 insertions, 295 deletions
diff --git a/string/test-memcpy.c b/string/test-memcpy.c
index 101d51c..70f9e02 100644
--- a/string/test-memcpy.c
+++ b/string/test-memcpy.c
@@ -16,92 +16,8 @@
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
-#ifndef MEMCPY_RESULT
-# define DO_EXTRA_TESTS
-# define MEMCPY_RESULT(dst, len) dst
-# define MIN_PAGE_SIZE 131072
-# define TEST_MAIN
-# define TEST_NAME "memcpy"
-# define TIMEOUT (8 * 60)
-# include "test-string.h"
-
-char *simple_memcpy (char *, const char *, size_t);
-char *builtin_memcpy (char *, const char *, size_t);
-
-IMPL (simple_memcpy, 0)
-IMPL (builtin_memcpy, 0)
-IMPL (memcpy, 1)
-
-char *
-simple_memcpy (char *dst, const char *src, size_t n)
-{
- char *ret = dst;
- while (n--)
- *dst++ = *src++;
- return ret;
-}
-
-char *
-builtin_memcpy (char *dst, const char *src, size_t n)
-{
- return __builtin_memcpy (dst, src, n);
-}
-#endif
-
-typedef char *(*proto_t) (char *, const char *, size_t);
-
-static void
-do_one_test (impl_t *impl, char *dst, const char *src,
- size_t len)
-{
- size_t i;
-
- /* Must clear the destination buffer set by the previous run. */
- for (i = 0; i < len; i++)
- dst[i] = 0;
-
- if (CALL (impl, dst, src, len) != MEMCPY_RESULT (dst, len))
- {
- error (0, 0, "Wrong result in function %s %p %p", impl->name,
- CALL (impl, dst, src, len), MEMCPY_RESULT (dst, len));
- ret = 1;
- return;
- }
-
- if (memcmp (dst, src, len) != 0)
- {
- error (0, 0, "Wrong result in function %s dst %p \"%.*s\" src %p \"%.*s\" len %zu",
- impl->name, dst, (int) len, dst, src, (int) len, src, len);
- ret = 1;
- return;
- }
-}
-
-static void
-do_test (size_t align1, size_t align2, size_t len)
-{
- size_t i, j, repeats;
- char *s1, *s2;
-
- align1 &= 4095;
- if (align1 + len >= page_size)
- return;
-
- align2 &= 4095;
- if (align2 + len >= page_size)
- return;
-
- s1 = (char *) (buf1 + align1);
- s2 = (char *) (buf2 + align2);
- for (repeats = 0; repeats < 2; ++repeats)
- {
- for (i = 0, j = 1; i < len; i++, j += 23)
- s1[i] = j;
-
- FOR_EACH_IMPL (impl, 0)
- do_one_test (impl, s2, s1, len);
- }
-}
+/* test-memcpy-support.h contains all test functions. */
+#include "test-memcpy-support.h"
static void
do_random_tests (void)
@@ -114,182 +30,108 @@ do_random_tests (void)
for (n = 0; n < ITERATIONS; n++)
{
if (n == 0)
- {
- len = getpagesize ();
- size = len + 512;
- size1 = size;
- size2 = size;
- align1 = 512;
- align2 = 512;
- }
+ {
+ len = getpagesize ();
+ size = len + 512;
+ size1 = size;
+ size2 = size;
+ align1 = 512;
+ align2 = 512;
+ }
else
- {
- if ((random () & 255) == 0)
- size = 65536;
- else
- size = 768;
- if (size > page_size)
- size = page_size;
- size1 = size;
- size2 = size;
- i = random ();
- if (i & 3)
- size -= 256;
- if (i & 1)
- size1 -= 256;
- if (i & 2)
- size2 -= 256;
- if (i & 4)
- {
- len = random () % size;
- align1 = size1 - len - (random () & 31);
- align2 = size2 - len - (random () & 31);
- if (align1 > size1)
- align1 = 0;
- if (align2 > size2)
- align2 = 0;
- }
- else
- {
- align1 = random () & 63;
- align2 = random () & 63;
- len = random () % size;
- if (align1 + len > size1)
- align1 = size1 - len;
- if (align2 + len > size2)
- align2 = size2 - len;
- }
- }
+ {
+ if ((random () & 255) == 0)
+ size = 65536;
+ else
+ size = 768;
+ if (size > page_size)
+ size = page_size;
+ size1 = size;
+ size2 = size;
+ i = random ();
+ if (i & 3)
+ size -= 256;
+ if (i & 1)
+ size1 -= 256;
+ if (i & 2)
+ size2 -= 256;
+ if (i & 4)
+ {
+ len = random () % size;
+ align1 = size1 - len - (random () & 31);
+ align2 = size2 - len - (random () & 31);
+ if (align1 > size1)
+ align1 = 0;
+ if (align2 > size2)
+ align2 = 0;
+ }
+ else
+ {
+ align1 = random () & 63;
+ align2 = random () & 63;
+ len = random () % size;
+ if (align1 + len > size1)
+ align1 = size1 - len;
+ if (align2 + len > size2)
+ align2 = size2 - len;
+ }
+ }
p1 = buf1 + page_size - size1;
p2 = buf2 + page_size - size2;
c = random () & 255;
j = align1 + len + 256;
if (j > size1)
- j = size1;
+ j = size1;
for (i = 0; i < j; ++i)
- p1[i] = random () & 255;
+ p1[i] = random () & 255;
FOR_EACH_IMPL (impl, 1)
- {
- j = align2 + len + 256;
- if (j > size2)
- j = size2;
- memset (p2, c, j);
- res = (unsigned char *) CALL (impl,
- (char *) (p2 + align2),
- (char *) (p1 + align1), len);
- if (res != MEMCPY_RESULT (p2 + align2, len))
- {
- error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd) %p != %p",
- n, impl->name, align1, align2, len, res,
- MEMCPY_RESULT (p2 + align2, len));
- ret = 1;
- }
- for (i = 0; i < align2; ++i)
- {
- if (p2[i] != c)
- {
- error (0, 0, "Iteration %zd - garbage before, %s (%zd, %zd, %zd)",
- n, impl->name, align1, align2, len);
- ret = 1;
- break;
- }
- }
- for (i = align2 + len; i < j; ++i)
- {
- if (p2[i] != c)
- {
- error (0, 0, "Iteration %zd - garbage after, %s (%zd, %zd, %zd)",
- n, impl->name, align1, align2, len);
- ret = 1;
- break;
- }
- }
- if (memcmp (p1 + align1, p2 + align2, len))
- {
- error (0, 0, "Iteration %zd - different strings, %s (%zd, %zd, %zd)",
- n, impl->name, align1, align2, len);
- ret = 1;
- }
- }
- }
-}
-
-static void
-do_test1 (size_t align1, size_t align2, size_t size)
-{
- void *large_buf;
- size_t mmap_size, region_size;
-
- align1 &= (page_size - 1);
- if (align1 == 0)
- align1 = page_size;
-
- align2 &= (page_size - 1);
- if (align2 == 0)
- align2 = page_size;
-
- region_size = (size + page_size - 1) & (~(page_size - 1));
-
- mmap_size = region_size * 2 + 3 * page_size;
- large_buf = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE,
- MAP_PRIVATE | MAP_ANON, -1, 0);
- if (large_buf == MAP_FAILED)
- {
- puts ("Failed to allocate large_buf, skipping do_test1");
- return;
- }
- if (mprotect (large_buf + region_size + page_size, page_size, PROT_NONE))
- error (EXIT_FAILURE, errno, "mprotect failed");
-
- size_t array_size = size / sizeof (uint32_t);
- uint32_t *dest = large_buf + align1;
- uint32_t *src = large_buf + region_size + 2 * page_size + align2;
- size_t i;
- size_t repeats;
- for(repeats = 0; repeats < 2; repeats++)
- {
- for (i = 0; i < array_size; i++)
- src[i] = (uint32_t) i;
- FOR_EACH_IMPL (impl, 0)
- {
- memset (dest, -1, size);
- CALL (impl, (char *) dest, (char *) src, size);
- for (i = 0; i < array_size; i++)
- if (dest[i] != src[i])
+ {
+ j = align2 + len + 256;
+ if (j > size2)
+ j = size2;
+ memset (p2, c, j);
+ res = (unsigned char *)CALL (impl, (char *)(p2 + align2),
+ (char *)(p1 + align1), len);
+ if (res != MEMCPY_RESULT (p2 + align2, len))
{
error (0, 0,
- "Wrong result in function %s dst \"%p\" src \"%p\" offset \"%zd\"",
- impl->name, dest, src, i);
+ "Iteration %zd - wrong result in function %s (%zd, %zd, "
+ "%zd) %p != %p",
+ n, impl->name, align1, align2, len, res,
+ MEMCPY_RESULT (p2 + align2, len));
ret = 1;
- munmap ((void *) large_buf, mmap_size);
- return;
}
- }
- dest = large_buf + region_size + 2 * page_size + align1;
- src = large_buf + align2;
- }
- munmap ((void *) large_buf, mmap_size);
-}
-
-static void
-do_random_large_tests (void)
-{
- size_t i, align1, align2, size;
- for (i = 0; i < 32; ++i)
- {
- align1 = random ();
- align2 = random ();
- size = (random() % 0x1000000) + 0x200000;
- do_test1 (align1, align2, size);
- }
-
- for (i = 0; i < 128; ++i)
- {
- align1 = random ();
- align2 = random ();
- size = (random() % 32768) + 4096;
- do_test1 (align1, align2, size);
+ for (i = 0; i < align2; ++i)
+ {
+ if (p2[i] != c)
+ {
+ error (0, 0,
+ "Iteration %zd - garbage before, %s (%zd, %zd, %zd)", n,
+ impl->name, align1, align2, len);
+ ret = 1;
+ break;
+ }
+ }
+ for (i = align2 + len; i < j; ++i)
+ {
+ if (p2[i] != c)
+ {
+ error (0, 0,
+ "Iteration %zd - garbage after, %s (%zd, %zd, %zd)", n,
+ impl->name, align1, align2, len);
+ ret = 1;
+ break;
+ }
+ }
+ if (memcmp (p1 + align1, p2 + align2, len))
+ {
+ error (0, 0,
+ "Iteration %zd - different strings, %s (%zd, %zd, %zd)", n,
+ impl->name, align1, align2, len);
+ ret = 1;
+ }
+ }
}
}
@@ -302,7 +144,7 @@ test_main (void)
printf ("%23s", "");
FOR_EACH_IMPL (impl, 0)
- printf ("\t%s", impl->name);
+ printf ("\t%s", impl->name);
putchar ('\n');
for (i = 0; i < 18; ++i)
@@ -323,7 +165,7 @@ test_main (void)
for (i = 3; i < 32; ++i)
{
if ((i & (i - 1)) == 0)
- continue;
+ continue;
do_test (0, 0, 16 * i);
do_test (i, 0, 16 * i);
do_test (0, i, 16 * i);
@@ -339,7 +181,6 @@ test_main (void)
}
do_test (0, 0, getpagesize ());
-
do_random_tests ();
do_test1 (0, 0, 0x100000);
@@ -380,50 +221,7 @@ test_main (void)
do_test1 (4096 - j, 1, i);
}
}
-#ifdef DO_EXTRA_TESTS
- for (i = 0x200000; i <= 0x2000000; i += i)
- {
- for (j = 64; j <= 1024; j <<= 1)
- {
- do_test1 (0, j, i);
- do_test1 (4095, j, i);
- do_test1 (4096 - j, 0, i);
-
- do_test1 (0, j - 1, i);
- do_test1 (4095, j - 1, i);
- do_test1 (4096 - j - 1, 0, i);
- do_test1 (0, j + 1, i);
- do_test1 (4095, j + 1, i);
- do_test1 (4096 - j, 1, i);
-
- do_test1 (0, j, i + 1);
- do_test1 (4095, j, i + 1);
- do_test1 (4096 - j, 0, i + 1);
-
- do_test1 (0, j - 1, i + 1);
- do_test1 (4095, j - 1, i + 1);
- do_test1 (4096 - j - 1, 0, i + 1);
-
- do_test1 (0, j + 1, i + 1);
- do_test1 (4095, j + 1, i + 1);
- do_test1 (4096 - j, 1, i + 1);
-
- do_test1 (0, j, i - 1);
- do_test1 (4095, j, i - 1);
- do_test1 (4096 - j, 0, i - 1);
-
- do_test1 (0, j - 1, i - 1);
- do_test1 (4095, j - 1, i - 1);
- do_test1 (4096 - j - 1, 0, i - 1);
-
- do_test1 (0, j + 1, i - 1);
- do_test1 (4095, j + 1, i - 1);
- do_test1 (4096 - j, 1, i - 1);
- }
- }
-#endif
- do_random_large_tests ();
return ret;
}
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