elf/tst-execstack-mod.c

   1 /* Test module for making nonexecutable stacks executable
   2    on load of a DSO that requires executable stacks.  */
   3
   4 #include <stdbool.h>
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7
   8 void callme (void (*callback) (void));
   9
  10 /* This is a function that makes use of executable stack by
  11    using a local function trampoline.  */
  12 void
  13 tryme (void)
  14 {
  15   bool ok = false;
  16   void callback (void) { ok = true; }
  17
  18   callme (&callback);
  19
  20   if (ok)
  21     printf ("DSO called ok (local %p, trampoline %p)\n", &ok, &callback);
  22   else
  23     abort ();
  24 }
  25
  26 void
  27 callme (void (*callback) (void))
  28 {
  29   (*callback) ();
  30 }