/* Copyright (C) 2003-2018 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, see

   <http://www.gnu.org/licenses/>.  */

/* Check alignment, overlapping and layout of TLS variables.  */

#include <stdint.h>

#include <stdio.h>

#include <stdlib.h>

#include <pthread.h>

#include <pthreadP.h>

#include <sys/param.h>

#include "tst-tls5.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);

  tls_registry[cnt].name = NULL;

  tls_registry[cnt].addr = (uintptr_t) pthread_self ();

  tls_registry[cnt].size = sizeof (struct pthread);

  tls_registry[cnt++].align = __alignof__ (struct pthread);

  qsort (tls_registry, cnt, sizeof (struct tls_obj), tls_addr_cmp);

  for (i = 0; i < cnt; ++i)

    {

      printf ("%s%s = %p, size %zd, align %zd",

	      tls_registry[i].name ? "&" : "",

	      tls_registry[i].name ?: "pthread_self ()",

	      (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 ("");

      if (tls_registry[i].name)

	{

	  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)

    {

#if TLS_TCB_AT_TP

      if (tls_registry[cnt - 1].name)

	{

	  puts ("pthread_self () not larger than all TLS addresses");

	  res = 1;

	}

      else

	max_addr = MAX (tls_registry[cnt - 1].addr, max_addr);

#elif TLS_DTV_AT_TP

      if (tls_registry[0].name)

	{

	  puts ("pthread_self () not smaller than all TLS addresses");

	  res = 1;

	}

#else

      abort ();

#endif

      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"