arch/ppc/kernel/checks.c

   1 #include <linux/errno.h>
   2 #include <linux/sched.h>
   3 #include <linux/kernel.h>
   4 #include <linux/mm.h>
   5 #include <linux/smp.h>
   6 #include <linux/smp_lock.h>
   7 #include <linux/stddef.h>
   8 #include <linux/unistd.h>
   9 #include <linux/ptrace.h>
  10 #include <linux/malloc.h>
  11 #include <linux/user.h>
  12 #include <linux/a.out.h>
  13
  14 #include <asm/pgtable.h>
  15 #include <asm/uaccess.h>
  16 #include <asm/system.h>
  17 #include <asm/io.h>
  18
  19 /*
  20  * Do various before compile checks of data structures
  21  * -- Cort
  22  */
  23 int main(void)
  24 {
  25         int ret = 0;
  26 #if 0
  27         if ( sizeof(struct thread_struct) % 16 )
  28         {
  29                 printf("Thread struct is not modulo 16 bytes: "
  30                         "%d bytes total, %d bytes off\n",
  31                         sizeof(struct thread_struct),
  32                         sizeof(struct thread_struct)%16);
  33                 ret = -1;
  34         }
  35 #endif
  36
  37         if ( sizeof(struct pt_regs) % 16 )
  38         {
  39                 printf("pt_regs struct is not modulo 16 bytes: "
  40                         "%d bytes total, %d bytes off\n",
  41                         sizeof(struct pt_regs),
  42                         sizeof(struct pt_regs)%16);
  43                 ret = -1;
  44
  45         }
  46
  47         printf("Task size        : %d bytes\n"
  48                "Tss size         : %d bytes\n"
  49                "pt_regs size     : %d bytes\n"
  50                "Kernel stack size: %d bytes\n",
  51                sizeof(struct task_struct), sizeof(struct thread_struct),
  52                sizeof(struct pt_regs),
  53                sizeof(union task_union) - sizeof(struct task_struct));
  54         return ret;
  55 }