Subversion Repositories openrisc_2011-10-31

/* { dg-do run { target i?86-*-linux* x86_64-*-linux* } } */

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

/* { dg-require-effective-target ilp32 } */

extern void abort (void);

extern void exit (int);

struct s {

  struct { int a; } a;

  int b;

  struct { struct { int a; } a; struct t { struct t *a, *b; } b; } c;

};

int bar(int (*fn)(void *), void *arg, unsigned long flags)

{

  return 0;

}

int baz(void *x)

{

  return 0;

}

void do_check (struct s *) asm ("do_check") __attribute__((regparm(1)));

void __attribute__((regparm(1))) do_check(struct s *x)

{

  if (x->a.a || x->b || x->c.a.a)

    abort();

  if (x->c.b.a != &x->c.b || x->c.b.b != &x->c.b)

    abort();

}

#define NT "\n\t"

asm ("\n"

"___checkme:"

NT      "pushl %eax; pushl %ebx; pushl %ecx; pushl %edx; pushl %esi; pushl %edi"

NT      "pushl $0; pushl $0; pushl $0; pushl $0; pushl $0"

NT      "pushl $0; pushl $0; pushl $0; pushl $0; pushl $0"

NT      "movl %ecx, %eax"

NT      "call do_check"

NT      "popl %eax; popl %eax; popl %eax; popl %eax; popl %eax"

NT      "popl %eax; popl %eax; popl %eax; popl %eax; popl %eax"

NT      "popl %edi; popl %esi; popl %edx; popl %ecx; popl %ebx; popl %eax"

NT      "ret"

);

extern inline void do_asm(struct s * x)

{

  asm volatile("call ___checkme" : : "c" (x) : "memory");

}

int foo(void)

{

  struct s x = { { 0 }, 0, { { 0 }, { &x.c.b, &x.c.b } } };

  bar(baz, &x, 1);

  do_asm(&x);

  bar(baz, &x, 1);

  do_asm(&x);

  return 0;

}

int main()

{

  foo();

  exit(0);

}