nptl/tst-tls5.c

   1 /* Copyright (C) 2003 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 /* Check alignment, overlapping and layout of TLS variables.  */
  21 #include <stdint.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <pthread.h>
  25 #include <pthreadP.h>
  26 #include <sys/param.h>
  27
  28 #include "tst-tls5.h"
  29
  30 #ifdef TLS_REGISTER
  31
  32 struct tls_obj tls_registry[64];
  33
  34 static int
  35 tls_addr_cmp (const void *a, const void *b)
  36 {
  37   if (((struct tls_obj *)a)->addr < ((struct tls_obj *)b)->addr)
  38     return -1;
  39   if (((struct tls_obj *)a)->addr > ((struct tls_obj *)b)->addr)
  40     return 1;
  41   return 0;
  42 }
  43
  44 static int
  45 do_test (void)
  46 {
  47   size_t cnt, i;
  48   int res = 0;
  49   uintptr_t min_addr = ~(uintptr_t) 0, max_addr = 0;
  50
  51   for (cnt = 0; tls_registry[cnt].name; ++cnt);
  52   tls_registry[cnt].name = NULL;
  53   tls_registry[cnt].addr = (uintptr_t) pthread_self ();
  54   tls_registry[cnt].size = sizeof (struct pthread);
  55   tls_registry[cnt++].align = __alignof__ (struct pthread);
  56
  57   qsort (tls_registry, cnt, sizeof (struct tls_obj), tls_addr_cmp);
  58
  59   for (i = 0; i < cnt; ++i)
  60     {
  61       printf ("%s%s = %p, size %zd, align %zd",
  62               tls_registry[i].name ? "&" : "",
  63               tls_registry[i].name ?: "pthread_self ()",
  64               (void *) tls_registry[i].addr,
  65               tls_registry[i].size, tls_registry[i].align);
  66       if (tls_registry[i].addr & (tls_registry[i].align - 1))
  67         {
  68           fputs (", WRONG ALIGNMENT", stdout);
  69           res = 1;
  70         }
  71       if (i > 0
  72           && (tls_registry[i - 1].addr + tls_registry[i - 1].size
  73               > tls_registry[i].addr))
  74         {
  75           fputs (", ADDRESS OVERLAP", stdout);
  76           res = 1;
  77         }
  78       puts ("");
  79       if (tls_registry[i].name)
  80         {
  81           min_addr = MIN (tls_registry[i].addr, min_addr);
  82           max_addr = MAX (tls_registry[i].addr + tls_registry[i].size,
  83                           max_addr);
  84         }
  85     }
  86
  87   if (cnt > 1)
  88     {
  89 #if TLS_TCB_AT_TP
  90       if (tls_registry[cnt - 1].name)
  91         {
  92           puts ("pthread_self () not larger than all TLS addresses");
  93           res = 1;
  94         }
  95       else
  96         max_addr = MAX (tls_registry[cnt - 1].addr, max_addr);
  97 #elif TLS_DTV_AT_TP
  98       if (tls_registry[0].name)
  99         {
 100           puts ("pthread_self () not smaller than all TLS addresses");
 101           res = 1;
 102         }
 103 #else
 104       abort ();
 105 #endif
 106       printf ("Initial TLS used block size %zd\n",
 107               (size_t) (max_addr - min_addr));
 108     }
 109   return res;
 110 }
 111
 112 #define TEST_FUNCTION do_test ()
 113
 114 #else
 115
 116 #define TEST_FUNCTION 0
 117
 118 #endif
 119
 120 #include "../test-skeleton.c"