glibc/elf/ifuncdep2.c

/* Test 3 STT_GNU_IFUNC symbols.  */

#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 * foo1_ifunc (void) __asm__ ("foo1");
__asm__(".type foo1, %gnu_indirect_function");

void *
inhibit_stack_protector
foo1_ifunc (void)
{
  return ifunc_sel (one, minus_one, zero);
}

void * foo2_ifunc (void) __asm__ ("foo2");
__asm__(".type foo2, %gnu_indirect_function");

void *
inhibit_stack_protector
foo2_ifunc (void)
{
  return ifunc_sel (minus_one, one, zero);
}

void * foo3_ifunc (void) __asm__ ("foo3");
__asm__(".type foo3, %gnu_indirect_function");

void *
inhibit_stack_protector
foo3_ifunc (void)
{
  return ifunc_sel (one, zero, minus_one);
}