1  #include <stdio.h>
       2  
       3  
       4  __thread int foo, bar __attribute__ ((tls_model("global-dynamic")));
       5  extern __thread int baz __attribute__ ((tls_model("global-dynamic")));
       6  extern __thread int foo_ie asm ("foo") __attribute__ ((tls_model("initial-exec")));
       7  extern __thread int bar_ie asm ("bar") __attribute__ ((tls_model("initial-exec")));
       8  extern __thread int baz_ie asm ("baz") __attribute__ ((tls_model("initial-exec")));
       9  
      10  
      11  extern int in_dso (void);
      12  
      13  int
      14  in_dso (void)
      15  {
      16    int result = 0;
      17    int *ap, *bp, *cp;
      18  
      19    /* Get variables using initial exec model.  */
      20    fputs ("get sum of foo and bar (IE)", stdout);
      21    asm ("" ::: "memory");
      22    ap = &foo_ie;
      23    bp = &bar_ie;
      24    printf (" = %d\n", *ap + *bp);
      25    result |= *ap + *bp != 3;
      26    if (*ap != 1)
      27      {
      28        printf ("foo = %d\n", *ap);
      29        result = 1;
      30      }
      31    if (*bp != 2)
      32      {
      33        printf ("bar = %d\n", *bp);
      34        result = 1;
      35      }
      36  
      37  
      38    /* Get variables using generic dynamic model or TLSDESC.  */
      39    fputs ("get sum of foo and bar and baz (GD or TLSDESC)", stdout);
      40    ap = &foo;
      41    bp = &bar;
      42    cp = &baz;
      43    printf (" = %d\n", *ap + *bp + *cp);
      44    result |= *ap + *bp + *cp != 6;
      45    if (*ap != 1)
      46      {
      47        printf ("foo = %d\n", *ap);
      48        result = 1;
      49      }
      50    if (*bp != 2)
      51      {
      52        printf ("bar = %d\n", *bp);
      53        result = 1;
      54      }
      55    if (*cp != 3)
      56      {
      57        printf ("baz = %d\n", *cp);
      58        result = 1;
      59      }
      60  
      61    return result;
      62  }