/* Test STT_GNU_IFUNC symbols in PIE: 1. Direct function call. 2. Function pointer. 3. Reference from a shared library. */ #include <stdlib.h> #include "ifunc-sel.h" typedef int (*foo_p) (void); extern foo_p foo_ptr; static int one (void) { return -30; } void * foo_ifunc (void) __asm__ ("foo"); __asm__(".type foo, %gnu_indirect_function"); void * foo_ifunc (void) { return ifunc_one (one); } extern int foo (void); extern foo_p get_foo (void); extern foo_p get_foo_p (void); foo_p my_foo_ptr = foo; int main (void) { foo_p p; p = get_foo (); if (p != foo) abort (); if ((*p) () != -30) abort (); p = get_foo_p (); if (p != foo) abort (); if ((*p) () != -30) abort (); if (foo_ptr != foo) abort (); if (my_foo_ptr != foo) abort (); if ((*foo_ptr) () != -30) abort (); if ((*my_foo_ptr) () != -30) abort (); if (foo () != -30) abort (); return 0; } |