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/* ===-- trampoline_setup_test.c - Test __trampoline_setup -----------------===
*
* The LLVM Compiler Infrastructure
*
* This file is dual licensed under the MIT and the University of Illinois Open
* Source Licenses. 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() {
printf("skipped\n");
return 0;
}
#endif
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