| 1 | /* Test STT_GNU_IFUNC symbols without direct function call. */ |
|---|---|
| 2 | #include "ifunc-sel.h" |
| 3 | |
| 4 | int global = -1; |
| 5 | /* Can't use __attribute__((visibility("protected"))) until the GCC bug: |
| 6 | |
| 7 | https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65248 |
| 8 | |
| 9 | is fixed. */ |
| 10 | asm (".protected global"); |
| 11 | |
| 12 | static int |
| 13 | one (void) |
| 14 | { |
| 15 | return 1; |
| 16 | } |
| 17 | |
| 18 | static int |
| 19 | minus_one (void) |
| 20 | { |
| 21 | return -1; |
| 22 | } |
| 23 | |
| 24 | static int |
| 25 | zero (void) |
| 26 | { |
| 27 | return 0; |
| 28 | } |
| 29 | |
| 30 | void * foo_ifunc (void) __asm__ ("foo"); |
| 31 | __asm__(".type foo, %gnu_indirect_function"); |
| 32 | |
| 33 | void * |
| 34 | inhibit_stack_protector |
| 35 | foo_ifunc (void) |
| 36 | { |
| 37 | return ifunc_sel (f1: one, f2: minus_one, f3: zero); |
| 38 | } |
| 39 | |
| 40 | void * foo_hidden_ifunc (void) __asm__ ("foo_hidden"); |
| 41 | __asm__(".type foo_hidden, %gnu_indirect_function"); |
| 42 | |
| 43 | void * |
| 44 | inhibit_stack_protector |
| 45 | foo_hidden_ifunc (void) |
| 46 | { |
| 47 | return ifunc_sel (f1: minus_one, f2: one, f3: zero); |
| 48 | } |
| 49 | |
| 50 | void * foo_protected_ifunc (void) __asm__ ("foo_protected"); |
| 51 | __asm__(".type foo_protected, %gnu_indirect_function"); |
| 52 | |
| 53 | void * |
| 54 | inhibit_stack_protector |
| 55 | foo_protected_ifunc (void) |
| 56 | { |
| 57 | return ifunc_sel (f1: one, f2: zero, f3: minus_one); |
| 58 | } |
| 59 | |
| 60 | /* Test hidden indirect function. */ |
| 61 | __asm__(".hidden foo_hidden"); |
| 62 | |
| 63 | /* Test protected indirect function. */ |
| 64 | __asm__(".protected foo_protected"); |
| 65 |