elf/tst-tls3.c

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