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Commit | Line | Data |
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2f083d75 L |
1 | /* Test STT_GNU_IFUNC symbols: |
2 | ||
3 | 1. Direct function call. | |
4 | 2. Function pointer. | |
5 | 3. Visibility. | |
6 | */ | |
31c759bf | 7 | #include "ifunc-sel.h" |
2f083d75 | 8 | |
e0ed2fb4 L |
9 | int global = -1; |
10 | /* Can't use __attribute__((visibility("protected"))) until the GCC bug: | |
11 | ||
12 | https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65248 | |
13 | ||
14 | is fixed. */ | |
15 | asm (".protected global"); | |
2f083d75 L |
16 | |
17 | static int | |
18 | one (void) | |
19 | { | |
20 | return 1; | |
21 | } | |
22 | ||
23 | static int | |
24 | minus_one (void) | |
25 | { | |
26 | return -1; | |
27 | } | |
28 | ||
29 | static int | |
31c759bf | 30 | zero (void) |
2f083d75 L |
31 | { |
32 | return 0; | |
33 | } | |
34 | ||
35 | void * foo_ifunc (void) __asm__ ("foo"); | |
36 | __asm__(".type foo, %gnu_indirect_function"); | |
37 | ||
31c759bf | 38 | void * |
de659123 | 39 | inhibit_stack_protector |
2f083d75 L |
40 | foo_ifunc (void) |
41 | { | |
31c759bf | 42 | return ifunc_sel (one, minus_one, zero); |
2f083d75 L |
43 | } |
44 | ||
45 | void * foo_hidden_ifunc (void) __asm__ ("foo_hidden"); | |
46 | __asm__(".type foo_hidden, %gnu_indirect_function"); | |
47 | ||
31c759bf | 48 | void * |
de659123 | 49 | inhibit_stack_protector |
2f083d75 L |
50 | foo_hidden_ifunc (void) |
51 | { | |
31c759bf | 52 | return ifunc_sel (minus_one, one, zero); |
2f083d75 L |
53 | } |
54 | ||
55 | void * foo_protected_ifunc (void) __asm__ ("foo_protected"); | |
56 | __asm__(".type foo_protected, %gnu_indirect_function"); | |
57 | ||
31c759bf | 58 | void * |
de659123 | 59 | inhibit_stack_protector |
2f083d75 L |
60 | foo_protected_ifunc (void) |
61 | { | |
31c759bf | 62 | return ifunc_sel (one, zero, minus_one); |
2f083d75 L |
63 | } |
64 | ||
65 | /* Test hidden indirect function. */ | |
66 | __asm__(".hidden foo_hidden"); | |
67 | ||
68 | /* Test protected indirect function. */ | |
69 | __asm__(".protected foo_protected"); | |
70 | ||
71 | extern int foo (void); | |
72 | extern int foo_hidden (void); | |
73 | extern int foo_protected (void); | |
74 | extern int ret_foo; | |
75 | extern int ret_foo_hidden; | |
76 | extern int ret_foo_protected; | |
77 | ||
78 | #define FOO_P | |
79 | typedef int (*foo_p) (void); | |
80 | ||
81 | foo_p | |
82 | get_foo_p (void) | |
83 | { | |
84 | ret_foo = foo (); | |
85 | return foo; | |
86 | } | |
87 | ||
88 | foo_p | |
89 | get_foo_hidden_p (void) | |
90 | { | |
91 | ret_foo_hidden = foo_hidden (); | |
92 | return foo_hidden; | |
93 | } | |
94 | ||
95 | foo_p | |
96 | get_foo_protected_p (void) | |
97 | { | |
98 | ret_foo_protected = foo_protected (); | |
99 | return foo_protected; | |
100 | } |