| 1 | /* Test STT_GNU_IFUNC symbols: |
| 2 | |
| 3 | 1. Direct function call. |
| 4 | 2. Function pointer. |
| 5 | 3. Visibility. |
| 6 | */ |
| 7 | #include "ifunc-sel.h" |
| 8 | |
| 9 | int global __attribute__ ((visibility ("hidden"))) = -1; |
| 10 | |
| 11 | static int |
| 12 | one (void) |
| 13 | { |
| 14 | return 1; |
| 15 | } |
| 16 | |
| 17 | static int |
| 18 | minus_one (void) |
| 19 | { |
| 20 | return -1; |
| 21 | } |
| 22 | |
| 23 | static int |
| 24 | zero (void) |
| 25 | { |
| 26 | return 0; |
| 27 | } |
| 28 | |
| 29 | void * foo_ifunc (void) __asm__ ("foo"); |
| 30 | __asm__(".type foo, %gnu_indirect_function"); |
| 31 | |
| 32 | void * |
| 33 | foo_ifunc (void) |
| 34 | { |
| 35 | return ifunc_sel (one, minus_one, zero); |
| 36 | } |
| 37 | |
| 38 | void * foo_hidden_ifunc (void) __asm__ ("foo_hidden"); |
| 39 | __asm__(".type foo_hidden, %gnu_indirect_function"); |
| 40 | |
| 41 | void * |
| 42 | foo_hidden_ifunc (void) |
| 43 | { |
| 44 | return ifunc_sel (minus_one, one, zero); |
| 45 | } |
| 46 | |
| 47 | void * foo_protected_ifunc (void) __asm__ ("foo_protected"); |
| 48 | __asm__(".type foo_protected, %gnu_indirect_function"); |
| 49 | |
| 50 | void * |
| 51 | foo_protected_ifunc (void) |
| 52 | { |
| 53 | return ifunc_sel (one, zero, minus_one); |
| 54 | } |
| 55 | |
| 56 | /* Test hidden indirect function. */ |
| 57 | __asm__(".hidden foo_hidden"); |
| 58 | |
| 59 | /* Test protected indirect function. */ |
| 60 | __asm__(".protected foo_protected"); |
| 61 | |
| 62 | extern int foo (void); |
| 63 | extern int foo_hidden (void); |
| 64 | extern int foo_protected (void); |
| 65 | extern int ret_foo; |
| 66 | extern int ret_foo_hidden; |
| 67 | extern int ret_foo_protected; |
| 68 | |
| 69 | #define FOO_P |
| 70 | typedef int (*foo_p) (void); |
| 71 | |
| 72 | extern foo_p get_foo_p (void); |
| 73 | extern foo_p get_foo_hidden_p (void); |
| 74 | extern foo_p get_foo_protected_p (void); |
| 75 | |
| 76 | foo_p |
| 77 | get_foo_p (void) |
| 78 | { |
| 79 | ret_foo = foo (); |
| 80 | return foo; |
| 81 | } |
| 82 | |
| 83 | foo_p |
| 84 | get_foo_hidden_p (void) |
| 85 | { |
| 86 | ret_foo_hidden = foo_hidden (); |
| 87 | return foo_hidden; |
| 88 | } |
| 89 | |
| 90 | foo_p |
| 91 | get_foo_protected_p (void) |
| 92 | { |
| 93 | ret_foo_protected = foo_protected (); |
| 94 | return foo_protected; |
| 95 | } |