| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | /* Test STT_GNU_IFUNC symbols in PIE: |
| 2 | |
| 3 | 1. Direct function call. |
| 4 | 2. Function pointer. |
| 5 | 3. Reference from a shared library. |
| 6 | */ |
| 7 | |
| 8 | #include <stdlib.h> |
| 9 | #include "ifunc-sel.h" |
| 10 | |
| 11 | typedef int (*foo_p) (void); |
| 12 | extern foo_p foo_ptr; |
| 13 | |
| 14 | static int |
| 15 | one (void) |
| 16 | { |
| 17 | return -30; |
| 18 | } |
| 19 | |
| 20 | void * foo_ifunc (void) __asm__ ("foo"); |
| 21 | __asm__(".type foo, %gnu_indirect_function"); |
| 22 | |
| 23 | void * |
| 24 | foo_ifunc (void) |
| 25 | { |
| 26 | return ifunc_one (one); |
| 27 | } |
| 28 | |
| 29 | extern int foo (void); |
| 30 | extern foo_p get_foo (void); |
| 31 | extern foo_p get_foo_p (void); |
| 32 | |
| 33 | foo_p my_foo_ptr = foo; |
| 34 | |
| 35 | int |
| 36 | main (void) |
| 37 | { |
| 38 | foo_p p; |
| 39 | |
| 40 | p = get_foo (); |
| 41 | if (p != foo) |
| 42 | abort (); |
| 43 | if ((*p) () != -30) |
| 44 | abort (); |
| 45 | |
| 46 | p = get_foo_p (); |
| 47 | if (p != foo) |
| 48 | abort (); |
| 49 | if ((*p) () != -30) |
| 50 | abort (); |
| 51 | |
| 52 | if (foo_ptr != foo) |
| 53 | abort (); |
| 54 | if (my_foo_ptr != foo) |
| 55 | abort (); |
| 56 | if ((*foo_ptr) () != -30) |
| 57 | abort (); |
| 58 | if ((*my_foo_ptr) () != -30) |
| 59 | abort (); |
| 60 | if (foo () != -30) |
| 61 | abort (); |
| 62 | |
| 63 | return 0; |
| 64 | } |