elf/tst-tlsmod1.c

   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 }