1/* Test that the ms_hook_prologue attribute generates the correct code.  */
2
3/* { dg-do run } */
4/* { dg-require-effective-target ms_hook_prologue } */
5/* { dg-options "-O2 -fomit-frame-pointer" } */
6
7int __attribute__ ((__ms_hook_prologue__)) foo ()
8{
9  unsigned char *ptr = (unsigned char *) foo;
10
11  /* The NOP mov must not be optimized away by optimizations.
12     The push %ebp, mov %esp, %ebp must not be removed by
13     -fomit-frame-pointer */
14#ifndef __x86_64__
15  /* movl.s %edi, %edi */
16  if(*ptr++ != 0x8b) return 1;
17  if(*ptr++ != 0xff) return 1;
18  /* push %ebp */
19  if(*ptr++ != 0x55) return 1;
20  /* movl.s %esp, %ebp */
21  if(*ptr++ != 0x8b) return 1;
22  if(*ptr++ != 0xec) return 1;
23#else
24  /* leaq 0(%rsp), %rsp */
25  if (*ptr++ != 0x48) return 1;
26  if (*ptr++ != 0x8d) return 1;
27  if (*ptr++ != 0xa4) return 1;
28  if (*ptr++ != 0x24) return 1;
29  if (ptr[0] != 0 || ptr[1] != 0 || ptr[2] != 0 || ptr[3] != 0)
30    return 1;
31#endif
32  return 0;
33}
34
35int main ()
36{
37  return foo();
38}
39