/* Test STT_GNU_IFUNC symbols:

   1. Direct function call.

   2. Function pointer.

   3. Visibility.

 */

#include "ifunc-sel.h"

int global = -1;

/* Can't use __attribute__((visibility("protected"))) until the GCC bug:

   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65248

   is fixed.  */

asm (".protected global");

static int

one (void)

{

  return 1;

}

static int

minus_one (void)

{

  return -1;

}

static int

zero (void)

{

  return 0;

}

void * foo_ifunc (void) __asm__ ("foo");

__asm__(".type foo, %gnu_indirect_function");

void *

inhibit_stack_protector

foo_ifunc (void)

{

  return ifunc_sel (one, minus_one, zero);

}

void * foo_hidden_ifunc (void) __asm__ ("foo_hidden");

__asm__(".type foo_hidden, %gnu_indirect_function");

void *

inhibit_stack_protector

foo_hidden_ifunc (void)

{

  return ifunc_sel (minus_one, one, zero);

}

void * foo_protected_ifunc (void) __asm__ ("foo_protected");

__asm__(".type foo_protected, %gnu_indirect_function");

void *

inhibit_stack_protector

foo_protected_ifunc (void)

{

  return ifunc_sel (one, zero, minus_one);

}

/* Test hidden indirect function.  */

__asm__(".hidden foo_hidden");

/* Test protected indirect function.  */

__asm__(".protected foo_protected");

extern int foo (void);

extern int foo_hidden (void);

extern int foo_protected (void);

extern int ret_foo;

extern int ret_foo_hidden;

extern int ret_foo_protected;

#define FOO_P

typedef int (*foo_p) (void);

foo_p

get_foo_p (void)

{

  ret_foo = foo ();

  return foo;

}

foo_p

get_foo_hidden_p (void)

{

  ret_foo_hidden = foo_hidden ();

  return foo_hidden;

}

foo_p

get_foo_protected_p (void)

{

  ret_foo_protected = foo_protected ();

  return foo_protected;

}