gcc/testsuite/gcc.dg/torture/pr68037-3.c

   1 /* { dg-do run { target i?86-*-* x86_64-*-* } } */
   2 /* { dg-skip-if "PR81210 sp not aligned to 16 bytes" { *-*-darwin* } } */
   3 /* { dg-options "-mgeneral-regs-only" } */
   4
   5 #include <stddef.h>
   6
   7 extern void exit (int);
   8
   9 typedef unsigned int uword_t __attribute__ ((mode (__word__)));
  10 typedef int aligned __attribute__((aligned(64)));
  11
  12 #define IP              0x12345671
  13 #define CS              0x12345672
  14 #define FLAGS           0x12345673
  15 #define SP              0x12345674
  16 #define SS              0x12345675
  17
  18 #define STRING(x)       XSTRING(x)
  19 #define XSTRING(x)      #x
  20 #define ASMNAME(cname)  ASMNAME2 (__USER_LABEL_PREFIX__, cname)
  21 #define ASMNAME2(prefix, cname) XSTRING (prefix) cname
  22
  23 struct interrupt_frame
  24 {
  25   uword_t ip;
  26   uword_t cs;
  27   uword_t flags;
  28   uword_t sp;
  29   uword_t ss;
  30 };
  31
  32 int
  33 check_int (int *i, int align)
  34 {
  35   *i = 20;
  36   if ((((ptrdiff_t) i) & (align - 1)) != 0)
  37     __builtin_abort ();
  38   return *i;
  39 }
  40
  41 __attribute__((interrupt, used))
  42 void
  43 fn (struct interrupt_frame *frame)
  44 {
  45   aligned i;
  46   if (check_int (&i, __alignof__(i)) != i)
  47     __builtin_abort ();
  48
  49   if (IP != frame->ip)
  50     __builtin_abort ();
  51   if (CS != frame->cs)
  52     __builtin_abort ();
  53   if (FLAGS != frame->flags)
  54     __builtin_abort ();
  55   if (SP != frame->sp)
  56     __builtin_abort ();
  57   if (SS != frame->ss)
  58     __builtin_abort ();
  59
  60   exit (0);
  61 }
  62
  63 int
  64 main ()
  65 {
  66   asm ("push    $" STRING (SS) ";               \
  67         push    $" STRING (SP) ";               \
  68         push    $" STRING (FLAGS) ";            \
  69         push    $" STRING (CS) ";               \
  70         push    $" STRING (IP) ";               \
  71         jmp      " ASMNAME ("fn"));
  72   return 0;
  73 }