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/* Test that the ms_hook_prologue attribute generates the correct code.  */

/* { dg-do run } */

/* { dg-require-effective-target ms_hook_prologue } */

/* { dg-options "-O2 -fomit-frame-pointer" } */

int __attribute__ ((__ms_hook_prologue__)) foo ()

{

  unsigned char *ptr = (unsigned char *) foo;

  /* The NOP mov must not be optimized away by optimizations.

     The push %ebp, mov %esp, %ebp must not be removed by

     -fomit-frame-pointer */

#ifndef __x86_64__

  /* movl.s %edi, %edi */

  if(*ptr++ != 0x8b) return 1;

  if(*ptr++ != 0xff) return 1;

  /* push %ebp */

  if(*ptr++ != 0x55) return 1;

  /* movl.s %esp, %ebp */

  if(*ptr++ != 0x8b) return 1;

  if(*ptr++ != 0xec) return 1;

#else

  /* leaq 0(%rsp), %rsp */

  if (*ptr++ != 0x48) return 1;

  if (*ptr++ != 0x8d) return 1;

  if (*ptr++ != 0xa4) return 1;

  if (*ptr++ != 0x24) return 1;

  if (ptr[0] != 0 || ptr[1] != 0 || ptr[2] != 0 || ptr[3] != 0)

    return 1;

#endif

  return 0;

}

int main ()

{

  return foo();

}