elf/tst-tls2.c

   1 /* glibc test for TLS in ld.so.  */
   2 #include <stdio.h>
   3
   4 #include <tls.h>
   5 #include "tls-macros.h"
   6
   7
   8 /* Two 'int' variables in TLS.  */
   9 VAR_INT_DEF(foo);
  10 VAR_INT_DEF(bar);
  11
  12
  13 int
  14 main (void)
  15 {
  16 #ifdef USE_TLS
  17   int result = 0;
  18   int *ap, *bp;
  19
  20
  21   /* Set the variable using the local exec model.  */
  22   puts ("set bar to 1 (LE)");
  23   ap = TLS_LE (bar);
  24   *ap = 1;
  25
  26
  27   /* Get variables using initial exec model.  */
  28   fputs ("get sum of foo and bar (IE)", stdout);
  29   ap = TLS_IE (foo);
  30   bp = TLS_IE (bar);
  31   printf (" = %d\n", *ap + *bp);
  32   result |= *ap + *bp != 1;
  33   if (*ap != 0)
  34     {
  35       printf ("foo = %d\n", *ap);
  36       result = 1;
  37     }
  38   if (*bp != 1)
  39     {
  40       printf ("bar = %d\n", *bp);
  41       result = 1;
  42     }
  43
  44
  45   /* Get variables using local dynamic model.  */
  46   fputs ("get sum of foo and bar (LD)", stdout);
  47   ap = TLS_LD (foo);
  48   bp = TLS_LD (bar);
  49   printf (" = %d\n", *ap + *bp);
  50   result |= *ap + *bp != 1;
  51   if (*ap != 0)
  52     {
  53       printf ("foo = %d\n", *ap);
  54       result = 1;
  55     }
  56   if (*bp != 1)
  57     {
  58       printf ("bar = %d\n", *bp);
  59       result = 1;
  60     }
  61
  62
  63   /* Get variables using generic dynamic model.  */
  64   fputs ("get sum of foo and bar (GD)", stdout);
  65   ap = TLS_GD (foo);
  66   bp = TLS_GD (bar);
  67   printf (" = %d\n", *ap + *bp);
  68   result |= *ap + *bp != 1;
  69   if (*ap != 0)
  70     {
  71       printf ("foo = %d\n", *ap);
  72       result = 1;
  73     }
  74   if (*bp != 1)
  75     {
  76       printf ("bar = %d\n", *bp);
  77       result = 1;
  78     }
  79
  80   return result;
  81 #else
  82   return 0;
  83 #endif
  84 }