elf/tst-tls1.c

   1 /* glibc test for TLS in ld.so.  */
   2 #include <stdio.h>
   3
   4
   5 __thread int foo, bar __attribute__ ((tls_model("local-exec")));
   6 extern __thread int foo_gd asm ("foo") __attribute__ ((tls_model("global-dynamic")));
   7 extern __thread int foo_ld asm ("foo") __attribute__ ((tls_model("local-dynamic")));
   8 extern __thread int foo_ie asm ("foo") __attribute__ ((tls_model("initial-exec")));
   9 extern __thread int bar_gd asm ("bar") __attribute__ ((tls_model("global-dynamic")));
  10 extern __thread int bar_ld asm ("bar") __attribute__ ((tls_model("local-dynamic")));
  11 extern __thread int bar_ie asm ("bar") __attribute__ ((tls_model("initial-exec")));
  12
  13 static int
  14 do_test (void)
  15 {
  16   int result = 0;
  17   int *ap, *bp;
  18
  19
  20   /* Set the variable using the local exec model.  */
  21   puts ("set bar to 1 (LE)");
  22   bar = 1;
  23
  24
  25   /* Get variables using initial exec model.  */
  26   fputs ("get sum of foo and bar (IE)", stdout);
  27   ap = &foo_ie;
  28   bp = &bar_ie;
  29   printf (" = %d\n", *ap + *bp);
  30   result |= *ap + *bp != 1;
  31   if (*ap != 0 || *bp != 1)
  32     {
  33       printf ("foo = %d\nbar = %d\n", *ap, *bp);
  34       result = 1;
  35     }
  36
  37
  38   /* Get variables using local dynamic model or TLSDESC.  */
  39   fputs ("get sum of foo and bar (LD or TLSDESC)", stdout);
  40   ap = &foo_ld;
  41   bp = &bar_ld;
  42   printf (" = %d\n", *ap + *bp);
  43   result |= *ap + *bp != 1;
  44   if (*ap != 0 || *bp != 1)
  45     {
  46       printf ("foo = %d\nbar = %d\n", *ap, *bp);
  47       result = 1;
  48     }
  49
  50
  51   /* Get variables using general dynamic model or TLSDESC.  */
  52   fputs ("get sum of foo and bar (GD or TLSDESC)", stdout);
  53   ap = &foo_gd;
  54   bp = &bar_gd;
  55   printf (" = %d\n", *ap + *bp);
  56   result |= *ap + *bp != 1;
  57   if (*ap != 0 || *bp != 1)
  58     {
  59       printf ("foo = %d\nbar = %d\n", *ap, *bp);
  60       result = 1;
  61     }
  62
  63
  64   return result;
  65 }
  66
  67
  68 #include <support/test-driver.c>