1 files changed, 239 insertions, 0 deletions
diff --git a/string/test-strcmp.c b/string/test-strcmp.c
new file mode 100644
index 0000000000..bfc147b701
--- /dev/null
+++ b/string/test-strcmp.c
@@ -0,0 +1,239 @@
+/* Test and measure strcmp functions.
+   Copyright (C) 1999, 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Written by Jakub Jelinek <jakub@redhat.com>, 1999.
+
+   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
+#include "test-string.h"
+
+typedef int (*proto_t) (const char *, const char *);
+int simple_strcmp (const char *, const char *);
+
+IMPL (simple_strcmp, 0)
+IMPL (strcmp, 1)
+
+int
+simple_strcmp (const char *s1, const char *s2)
+{
+  int ret;
+
+  while ((ret = *(unsigned char *) s1 - *(unsigned char *) s2++) == 0
+	 && *s1++);
+  return ret;
+}
+
+static void
+do_one_test (impl_t *impl, const char *s1, const char *s2, int exp_result)
+{
+  int result = CALL (impl, s1, s2);
+  if ((exp_result == 0 && result != 0)
+      || (exp_result < 0 && result >= 0)
+      || (exp_result > 0 && result <= 0))
+    {
+      error (0, 0, "Wrong result in function %s %d %d", impl->name,
+	     result, exp_result);
+      ret = 1;
+      return;
+    }
+
+  if (HP_TIMING_AVAIL)
+    {
+      hp_timing_t start, stop, best_time = ~ (hp_timing_t) 0;
+      size_t i;
+
+      for (i = 0; i < 32; ++i)
+	{
+	  HP_TIMING_NOW (start);
+	  CALL (impl, s1, s2);
+	  HP_TIMING_NOW (stop);
+	  HP_TIMING_BEST (best_time, start, stop);
+	}
+
+      printf ("\t%zd", (size_t) best_time);
+    }
+}
+
+static void
+do_test (size_t align1, size_t align2, size_t len, int max_char,
+	 int exp_result)
+{
+  size_t i;
+  char *s1, *s2;
+
+  if (len == 0)
+    return;
+
+  align1 &= 7;
+  if (align1 + len + 1 >= page_size)
+    return;
+
+  align2 &= 7;
+  if (align2 + len + 1 >= page_size)
+    return;
+
+  s1 = buf1 + align1;
+  s2 = buf2 + align2;
+
+  for (i = 0; i < len; i++)
+    s1[i] = s2[i] = 1 + 23 * i % max_char;
+
+  s1[len] = s2[len] = 0;
+  s1[len + 1] = 23;
+  s2[len + 1] = 24 + exp_result;
+  s2[len - 1] -= exp_result;
+
+  if (HP_TIMING_AVAIL)
+    printf ("Length %4zd, alignment %2zd/%2zd:", len, align1, align2);
+
+  FOR_EACH_IMPL (impl, 0)
+    do_one_test (impl, s1, s2, exp_result);
+
+  if (HP_TIMING_AVAIL)
+    putchar ('\n');
+}
+
+static void
+do_random_tests (void)
+{
+  size_t i, j, n, align1, align2, pos, len;
+  int result, r;
+  unsigned char *p1 = buf1 + page_size - 512;
+  unsigned char *p2 = buf2 + page_size - 512;
+
+  for (n = 0; n < ITERATIONS; n++)
+    {
+      align1 = random () & 31;
+      if (random () & 1)
+	align2 = random () & 31;
+      else
+	align2 = align1 + (random () & 24);
+      pos = random () & 511;
+      j = align1;
+      if (align2 > j)
+	j = align2;
+      if (pos + j >= 511)
+	pos = 510 - j - (random () & 7);
+      len = random () & 511;
+      if (pos >= len)
+        len = pos + (random () & 7);
+      if (len + j >= 512)
+        len = 511 - j - (random () & 7);
+      j = len + align1 + 64;
+      if (j > 512) j = 512;
+      for (i = 0; i < j; ++i)
+	{
+	  p1[i] = random () & 255;
+	  if (i < len + align1 && !p1[i])
+	    {
+	      p1[i] = random () & 255;
+	      if (!p1[i])
+		p1[i] = 1 + (random () & 127);
+	    }
+	}
+      for (i = 0; i < j; ++i)
+	{
+	  p2[i] = random () & 255;
+	  if (i < len + align2 && !p2[i])
+	    {
+	      p2[i] = random () & 255;
+	      if (!p2[i])
+		p2[i] = 1 + (random () & 127);
+	    }
+	}
+
+      result = 0;
+      memcpy (p2 + align2, p1 + align1, pos);
+      if (pos >= len)
+	{
+	  p1[len + align1] = 0;
+	  p2[len + align2] = 0;
+	}
+      else
+	{
+	  if (p2[align2 + pos] == p1[align1 + pos])
+	    {
+	      p2[align2 + pos] = random () & 255;
+	      if (p2[align2 + pos] == p1[align1 + pos])
+		p2[align2 + pos] = p1[align1 + pos] + 3 + (random () & 127);
+	    }
+
+	  if (p1[align1 + pos] < p2[align2 + pos])
+	    result = -1;
+	  else
+	    result = 1;
+	}
+
+      FOR_EACH_IMPL (impl, 1)
+	{
+	  r = CALL (impl, p1 + align1, p2 + align2);
+	  if ((r == 0 && result)
+	      || (r < 0 && result >= 0)
+	      || (r > 0 && result <= 0))
+	    {
+	      error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd, %zd) %d != %d, p1 %p p2 %p",
+		     n, impl->name, align1, align2, len, pos, r, result, p1, p2);
+	      ret = 1;
+	    }
+	}
+    }
+}
+
+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 = 1; i < 16; ++i)
+    {
+      do_test (i, i, i, 127, 0);
+      do_test (i, i, i, 127, 1);
+      do_test (i, i, i, 127, -1);
+    }
+
+  for (i = 1; i < 10; ++i)
+    {
+      do_test (0, 0, 2 << i, 127, 0);
+      do_test (0, 0, 2 << i, 254, 0);
+      do_test (0, 0, 2 << i, 127, 1);
+      do_test (0, 0, 2 << i, 254, 1);
+      do_test (0, 0, 2 << i, 127, -1);
+      do_test (0, 0, 2 << i, 254, -1);
+    }
+
+  for (i = 1; i < 8; ++i)
+    {
+      do_test (i, 2 * i, 8 << i, 127, 0);
+      do_test (2 * i, i, 8 << i, 254, 0);
+      do_test (i, 2 * i, 8 << i, 127, 1);
+      do_test (2 * i, i, 8 << i, 254, 1);
+      do_test (i, 2 * i, 8 << i, 127, -1);
+      do_test (2 * i, i, 8 << i, 254, -1);
+    }
+
+  do_random_tests ();
+  return ret;
+}
+
+#include "../test-skeleton.c"