(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.

1 files changed, 91 insertions, 0 deletions

diff --git a/linuxthreads/tst-tls1.c b/linuxthreads/tst-tls1.c
new file mode 100644
index 0000000000..3638b75455
--- /dev/null
+++ b/linuxthreads/tst-tls1.c
@@ -0,0 +1,91 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+   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.  */
+
+/* Check alignment, overlapping and layout of TLS variables.  */
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <pthread.h>
+#include <sys/param.h>
+
+#include "tst-tls1.h"
+
+#ifdef TLS_REGISTER
+
+struct tls_obj tls_registry[64];
+
+static int
+tls_addr_cmp (const void *a, const void *b)
+{
+  if (((struct tls_obj *)a)->addr < ((struct tls_obj *)b)->addr)
+    return -1;
+  if (((struct tls_obj *)a)->addr > ((struct tls_obj *)b)->addr)
+    return 1;
+  return 0;
+}
+
+static int
+do_test (void)
+{
+  size_t cnt, i;
+  int res = 0;
+  uintptr_t min_addr = ~(uintptr_t) 0, max_addr = 0;
+
+  for (cnt = 0; tls_registry[cnt].name; ++cnt);
+
+  qsort (tls_registry, cnt, sizeof (struct tls_obj), tls_addr_cmp);
+
+  for (i = 0; i < cnt; ++i)
+    {
+      printf ("%s = %p, size %zd, align %zd",
+	      tls_registry[i].name, (void *) tls_registry[i].addr,
+	      tls_registry[i].size, tls_registry[i].align);
+      if (tls_registry[i].addr & (tls_registry[i].align - 1))
+	{
+	  fputs (", WRONG ALIGNMENT", stdout);
+	  res = 1;
+	}
+      if (i > 0
+	  && (tls_registry[i - 1].addr + tls_registry[i - 1].size
+	      > tls_registry[i].addr))
+	{
+	  fputs (", ADDRESS OVERLAP", stdout);
+	  res = 1;
+	}
+      puts ("");
+      min_addr = MIN (tls_registry[i].addr, min_addr);
+      max_addr = MAX (tls_registry[i].addr + tls_registry[i].size,
+		      max_addr);
+    }
+
+  if (cnt > 1)
+    printf ("Initial TLS used block size %zd\n",
+	    (size_t) (max_addr - min_addr));
+  return res;
+}
+
+#define TEST_FUNCTION do_test ()
+
+#else
+
+#define TEST_FUNCTION 0
+
+#endif
+
+#include "../test-skeleton.c"