Subversion Repositories openrisc

/* 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 */
 
  /* 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;
  return 0;
}
 
int main ()
{
  return foo();
}