| /* ===-- trampoline_setup_test.c - Test __trampoline_setup -----------------=== |
| * |
| * The LLVM Compiler Infrastructure |
| * |
| * This file is distributed under the University of Illinois Open Source |
| * License. See LICENSE.TXT for details. |
| * |
| * ===----------------------------------------------------------------------=== |
| */ |
| |
| |
| #include <stdio.h> |
| #include <string.h> |
| #include <stdint.h> |
| #include <sys/mman.h> |
| |
| /* |
| * Tests nested functions |
| * The ppc compiler generates a call to __trampoline_setup |
| * The i386 and x86_64 compilers generate a call to ___enable_execute_stack |
| */ |
| |
| /* |
| * Note that, nested functions are not ISO C and are not supported in Clang. |
| */ |
| |
| #if !defined(__clang__) |
| |
| typedef int (*nested_func_t)(int x); |
| |
| nested_func_t proc; |
| |
| int main() { |
| /* Some locals */ |
| int c = 10; |
| int d = 7; |
| |
| /* Define a nested function: */ |
| int bar(int x) { return x*5 + c*d; }; |
| |
| /* Assign global to point to nested function |
| * (really points to trampoline). */ |
| proc = bar; |
| |
| /* Invoke nested function: */ |
| c = 4; |
| if ( (*proc)(3) != 43 ) |
| return 1; |
| d = 5; |
| if ( (*proc)(4) != 40 ) |
| return 1; |
| |
| /* Success. */ |
| return 0; |
| } |
| |
| #else |
| |
| int main() { |
| return 0; |
| } |
| |
| #endif |