1  /* Test STT_GNU_IFUNC symbols without direct function call.  */
       2  #include "ifunc-sel.h"
       3  
       4  int global = -1;
       5  /* Can't use __attribute__((visibility("protected"))) until the GCC bug:
       6  
       7     https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65248
       8  
       9     is fixed.  */
      10  asm (".protected global");
      11  
      12  static int
      13  one (void)
      14  {
      15    return 1;
      16  }
      17  
      18  static int
      19  minus_one (void)
      20  {
      21    return -1;
      22  }
      23  
      24  static int
      25  zero (void)
      26  {
      27    return 0;
      28  }
      29  
      30  void * foo_ifunc (void) __asm__ ("foo");
      31  __asm__(".type foo, %gnu_indirect_function");
      32  
      33  void *
      34  inhibit_stack_protector
      35  foo_ifunc (void)
      36  {
      37    return ifunc_sel (one, minus_one, zero);
      38  }
      39  
      40  void * foo_hidden_ifunc (void) __asm__ ("foo_hidden");
      41  __asm__(".type foo_hidden, %gnu_indirect_function");
      42  
      43  void *
      44  inhibit_stack_protector
      45  foo_hidden_ifunc (void)
      46  {
      47    return ifunc_sel (minus_one, one, zero);
      48  }
      49  
      50  void * foo_protected_ifunc (void) __asm__ ("foo_protected");
      51  __asm__(".type foo_protected, %gnu_indirect_function");
      52  
      53  void *
      54  inhibit_stack_protector
      55  foo_protected_ifunc (void)
      56  {
      57    return ifunc_sel (one, zero, minus_one);
      58  }
      59  
      60  /* Test hidden indirect function.  */
      61  __asm__(".hidden foo_hidden");
      62  
      63  /* Test protected indirect function.  */
      64  __asm__(".protected foo_protected");