* string/Makefile (strop-tests): Add memmem.

* string/test-memmem.c: New file.
	* string/test-string.h (BUF1PAGES): Define to 1 if undefined.
	(test_init): Size buf1 according to BUF1PAGES.

	* stdio-common/scanf16.c: New file.
	* stdio-common/scanf17.c: New file.
	* scripts/data/localplt-sparc64-linux-gnu.data: New file.

ChangeLog

@@ -1,3 +1,10 @@
+2008-05-24  Ulrich Drepper  <drepper@redhat.com>
+
+	* string/Makefile (strop-tests): Add memmem.
+	* string/test-memmem.c: New file.
+	* string/test-string.h (BUF1PAGES): Define to 1 if undefined.
+	(test_init): Size buf1 according to BUF1PAGES.
+
 2008-05-24  Jakub Jelinek  <jakub@redhat.com>
 
 	* libio/stdio.h (vscanf): Fix -std=c99 redirect.
@@ -5,8 +12,8 @@
 	(CFLAGS-scanf17.c): New.
 	* stdio-common/scanf14.c (main): Add fscanf and scanf tests.
 	* stdio-common/scanf15.c (main): Likewise.
-	* stdio-common/scanf16.c: New test.
+	* stdio-common/scanf16.c: New file.
-	* stdio-common/scanf17.c: New test.
+	* stdio-common/scanf17.c: New file.
 
 2008-05-24  Ulrich Drepper  <drepper@redhat.com>
 
@@ -52,7 +59,7 @@
 	* sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h
 	(__SYSCALL_CLOBBERS): Likewise.
 	* scripts/data/localplt-sparc-linux-gnu.data: New file.
-	* scripts/data/localplt-sparc64-linux-gnu.data: Likewise.
+	* scripts/data/localplt-sparc64-linux-gnu.data: New file.
 
 2008-05-21  Jakub Jelinek  <jakub@redhat.com>
 

string/Makefile

@@ -48,7 +48,7 @@ o-objects.ob	:= memcpy.o memset.o memchr.o
 
 strop-tests	:= memchr memcmp memcpy memmove mempcpy memset memccpy	\
 		   stpcpy stpncpy strcat strchr strcmp strcpy strcspn	\
-		   strlen strncmp strncpy strpbrk strrchr strspn
+		   strlen strncmp strncpy strpbrk strrchr strspn memmem
 tests		:= tester inl-tester noinl-tester testcopy test-ffs	\
 		   tst-strlen stratcliff tst-svc tst-inlcall		\
 		   bug-strncat1 bug-strspn1 bug-strpbrk1 tst-bswap	\

string/test-memmem.c

@@ -0,0 +1,185 @@
+/* Test and measure memmem functions.
+   Copyright (C) 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Written by Ulrich Drepper <drepper@redhat.com>, 2008.
+
+   The GNU C Library 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.
+
+   The GNU C Library 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 the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#define TEST_MAIN
+#define BUF1PAGES 20
+#define ITERATIONS 500
+#include "test-string.h"
+
+typedef char *(*proto_t) (const void *, size_t, const void *, size_t);
+void *simple_memmem (const void *, size_t, const void *, size_t);
+
+IMPL (simple_memmem, 0)
+IMPL (memmem, 1)
+
+void *
+simple_memmem (const void *haystack, size_t haystack_len, const void *needle,
+	       size_t needle_len)
+{
+  const char *begin;
+  const char *const last_possible
+    = (const char *) haystack + haystack_len - needle_len;
+
+  if (needle_len == 0)
+    /* The first occurrence of the empty string is deemed to occur at
+       the beginning of the string.  */
+    return (void *) haystack;
+
+  /* Sanity check, otherwise the loop might search through the whole
+     memory.  */
+  if (__builtin_expect (haystack_len < needle_len, 0))
+    return NULL;
+
+  for (begin = (const char *) haystack; begin <= last_possible; ++begin)
+    if (begin[0] == ((const char *) needle)[0] &&
+        !memcmp ((const void *) &begin[1],
+                 (const void *) ((const char *) needle + 1),
+                 needle_len - 1))
+      return (void *) begin;
+
+  return NULL;
+}
+
+static void
+do_one_test (impl_t *impl, const void *haystack, size_t haystack_len,
+	     const void *needle, size_t needle_len, const void *expected)
+{
+  void *res;
+
+  res = CALL (impl, haystack, haystack_len, needle, needle_len);
+  if (res != expected)
+    {
+      error (0, 0, "Wrong result in function %s %p %p", impl->name,
+	     res, expected);
+      ret = 1;
+      return;
+    }
+
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start __attribute ((unused));
+      hp_timing_t stop __attribute ((unused));
+      hp_timing_t best_time = ~ (hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  HP_TIMING_NOW (start);
+	  CALL (impl, haystack, haystack_len, needle, needle_len);
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+static void
+do_test (const char *str, size_t len, size_t idx)
+{
+  char tmpbuf[len];
+
+  memcpy (tmpbuf, buf1 + idx, len);
+  memcpy (buf1 + idx, str, len);
+
+  if (HP_TIMING_AVAIL)
+    printf ("String %s, offset %zd:", str, idx);
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, buf1, BUF1PAGES * page_size, str, len, buf1 + idx);
+
+  memcpy (buf1 + idx, tmpbuf, len);
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+static void
+do_random_tests (void)
+{
+  for (size_t n = 0; n < ITERATIONS; ++n)
+    {
+      char tmpbuf[32];
+
+      size_t shift = random () % 11;
+      size_t rel = random () % ((2 << (shift + 1)) * 64);
+      size_t idx = MIN ((2 << shift) * 64 + rel, BUF1PAGES * page_size - 2);
+      size_t len = random () % (sizeof (tmpbuf) - 1) + 1;
+      len = MIN (len, BUF1PAGES * page_size - idx - 1);
+      memcpy (tmpbuf, buf1 + idx, len);
+      for (size_t i = random () % len / 2 + 1; i > 0; --i)
+	{
+	  size_t off = random () % len;
+	  char ch = '0' + random () % 10;
+
+	  buf1[idx + off] = ch;
+	}
+
+      if (HP_TIMING_AVAIL)
+	printf ("String %.*s, offset %zd:", (int) len, buf1 + idx, idx);
+
+      FOR_EACH_IMPL (impl, 0)
+	do_one_test (impl, buf1, BUF1PAGES * page_size, buf1 + idx, len,
+		     buf1 + idx);
+
+      if (HP_TIMING_AVAIL)
+	putchar ('\n');
+
+      memcpy (buf1 + idx, tmpbuf, len);
+    }
+}
+
+
+static const char *const strs[] =
+  {
+    "00000", "00112233", "0123456789", "0000111100001111",
+    "00000111110000022222", "012345678901234567890",
+    "abc0", "aaaa0", "abcabc0"
+  };
+
+
+int
+test_main (void)
+{
+  size_t i;
+
+  test_init ();
+
+  printf ("%23s", "");
+  FOR_EACH_IMPL (impl, 0)
+    printf ("\t%s", impl->name);
+  putchar ('\n');
+
+  for (i = 0; i < BUF1PAGES * page_size; ++i)
+    buf1[i] = 60 + random () % 32;
+
+  for (i = 0; i < sizeof (strs) / sizeof (strs[0]); ++i)
+    for (size_t j = 0; j < 120; j += 7)
+      {
+	size_t len = strlen (strs[i]);
+
+	do_test (strs[i], len, j);
+      }
+
+  do_random_tests ();
+  return ret;
+}
+
+#include "../test-skeleton.c"

string/test-string.h

@@ -1,5 +1,5 @@
 /* Test and measure string and memory functions.
-   Copyright (C) 1999, 2002, 2004 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2002, 2004, 2008 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Written by Jakub Jelinek <jakub@redhat.com>, 1999.
 
@@ -118,6 +118,10 @@ size_t iterations = 100000;
     }									\
   while (0)
 
+#ifndef BUF1PAGES
+# define BUF1PAGES 1
+#endif
+
 static void
 test_init (void)
 {
@@ -126,11 +130,11 @@ test_init (void)
   if (page_size < MIN_PAGE_SIZE)
     page_size = MIN_PAGE_SIZE;
 #endif
-  buf1 = mmap (0, 2 * page_size, PROT_READ | PROT_WRITE,
+  buf1 = mmap (0, (BUF1PAGES + 1) * page_size, PROT_READ | PROT_WRITE,
 	       MAP_PRIVATE | MAP_ANON, -1, 0);
   if (buf1 == MAP_FAILED)
     error (EXIT_FAILURE, errno, "mmap failed");
-  if (mprotect (buf1 + page_size, page_size, PROT_NONE))
+  if (mprotect (buf1 + BUF1PAGES * page_size, page_size, PROT_NONE))
     error (EXIT_FAILURE, errno, "mprotect failed");
   buf2 = mmap (0, 2 * page_size, PROT_READ | PROT_WRITE,
 	       MAP_PRIVATE | MAP_ANON, -1, 0);
@@ -145,7 +149,7 @@ test_init (void)
       srandom (seed);
     }
 
-  memset (buf1, 0xa5, page_size);
+  memset (buf1, 0xa5, BUF1PAGES * page_size);
   memset (buf2, 0x5a, page_size);
 }