testing/kernel-cache-tests/ctf-x86_64/main.cpp

   1
   2 int g = 0;
   3
   4 static int func() {
   5         return g;
   6 }
   7
   8 struct S {
   9         __typeof(&func) funcPtr;
  10         __typeof(&func) funcPtr2;
  11         int *p1;
  12         __attribute__((aligned((16384)))) __typeof(&func) funcPtr3;
  13         int *p2;
  14 };
  15
  16 S s = { &func, &func, &g, &func, &g };
  17
  18 struct __attribute__((packed)) PackedS {
  19         int i;
  20         __typeof(&func) funcPtr;        // aligned to 4
  21         __typeof(&func) funcPtr2;       // aligned to 4
  22         int j;
  23         int *p1;                                        // aligned to 8
  24         char k;
  25         int *p2;                                        // aligned to 1
  26 };
  27
  28 __attribute__((aligned((16384))))
  29 PackedS ps = { 0, &func, &func, 0, &g, 0, &g };
  30
  31 __asm(".code32; .text; .section __HIB, __text; .globl _foo; _foo: movl _foo, %esp; ret");
  32
  33 __attribute__((section(("__HIB, __text"))))
  34 extern "C" int _start() {
  35         return s.funcPtr() + s.funcPtr2() + s.funcPtr3() + ps.funcPtr();
  36 }