elf/ifuncdep2.c

   1 /* Test 3 STT_GNU_IFUNC symbols.  */
   2
   3 #include "ifunc-sel.h"
   4
   5 int global = -1;
   6 /* Can't use __attribute__((visibility("protected"))) until the GCC bug:
   7
   8    https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65248
   9
  10    is fixed.  */
  11 asm (".protected global");
  12
  13 static int
  14 one (void)
  15 {
  16   return 1;
  17 }
  18
  19 static int
  20 minus_one (void)
  21 {
  22   return -1;
  23 }
  24
  25 static int
  26 zero (void)
  27 {
  28   return 0;
  29 }
  30
  31 void * foo1_ifunc (void) __asm__ ("foo1");
  32 __asm__(".type foo1, %gnu_indirect_function");
  33
  34 void *
  35 inhibit_stack_protector
  36 foo1_ifunc (void)
  37 {
  38   return ifunc_sel (one, minus_one, zero);
  39 }
  40
  41 void * foo2_ifunc (void) __asm__ ("foo2");
  42 __asm__(".type foo2, %gnu_indirect_function");
  43
  44 void *
  45 inhibit_stack_protector
  46 foo2_ifunc (void)
  47 {
  48   return ifunc_sel (minus_one, one, zero);
  49 }
  50
  51 void * foo3_ifunc (void) __asm__ ("foo3");
  52 __asm__(".type foo3, %gnu_indirect_function");
  53
  54 void *
  55 inhibit_stack_protector
  56 foo3_ifunc (void)
  57 {
  58   return ifunc_sel (one, zero, minus_one);
  59 }