1 /* ===-- trampoline_setup_test.c - Test __trampoline_setup -----------------===
2 *
3 * The LLVM Compiler Infrastructure
4 *
5 * This file is dual licensed under the MIT and the University of Illinois Open
6 * Source Licenses. See LICENSE.TXT for details.
7 *
8 * ===----------------------------------------------------------------------===
9 */
10
11
12 #include <stdio.h>
13 #include <string.h>
14 #include <stdint.h>
15 #include <sys/mman.h>
16
17 /*
18 * Tests nested functions
19 * The ppc compiler generates a call to __trampoline_setup
20 * The i386 and x86_64 compilers generate a call to ___enable_execute_stack
21 */
22
23 /*
24 * Note that, nested functions are not ISO C and are not supported in Clang.
25 */
26
27 #if !defined(__clang__)
28
29 typedef int (*nested_func_t)(int x);
30
31 nested_func_t proc;
32
main()33 int main() {
34 /* Some locals */
35 int c = 10;
36 int d = 7;
37
38 /* Define a nested function: */
39 int bar(int x) { return x*5 + c*d; };
40
41 /* Assign global to point to nested function
42 * (really points to trampoline). */
43 proc = bar;
44
45 /* Invoke nested function: */
46 c = 4;
47 if ( (*proc)(3) != 43 )
48 return 1;
49 d = 5;
50 if ( (*proc)(4) != 40 )
51 return 1;
52
53 /* Success. */
54 return 0;
55 }
56
57 #else
58
main()59 int main() {
60 return 0;
61 }
62
63 #endif
64