arch/arm26/kernel/asm-offsets.c

   1 /*
   2  * Copyright (C) 1995-2001 Russell King
   3  *               2001-2002 Keith Owens
   4  *               2003      Ian Molton
   5  *
   6  * Generate definitions needed by assembly language modules.
   7  * This code generates raw asm output which is post-processed to extract
   8  * and format the required data.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #include <linux/sched.h>
  16 #include <linux/mm.h>
  17
  18 #include <asm/pgtable.h>
  19 #include <asm/uaccess.h>
  20
  21 /*
  22  * Make sure that the compiler and target are compatible.
  23  */
  24 #if defined(__APCS_32__) && defined(CONFIG_CPU_26)
  25 #error Sorry, your compiler targets APCS-32 but this kernel requires APCS-26
  26 #endif
  27
  28 /* Use marker if you need to separate the values later */
  29
  30 #define DEFINE(sym, val) \
  31         asm volatile("\n->" #sym " %0 " #val : : "i" (val))
  32
  33 #define BLANK() asm volatile("\n->" : : )
  34
  35 int main(void)
  36 {
  37   DEFINE(TSK_ACTIVE_MM,         offsetof(struct task_struct, active_mm));
  38   BLANK();
  39   DEFINE(VMA_VM_MM,             offsetof(struct vm_area_struct, vm_mm));
  40   DEFINE(VMA_VM_FLAGS,          offsetof(struct vm_area_struct, vm_flags));
  41   BLANK();
  42   DEFINE(VM_EXEC,               VM_EXEC);
  43   BLANK();
  44   BLANK();
  45   DEFINE(PAGE_PRESENT,          _PAGE_PRESENT);
  46   DEFINE(PAGE_READONLY,         _PAGE_READONLY);
  47   DEFINE(PAGE_NOT_USER,         _PAGE_NOT_USER);
  48   DEFINE(PAGE_OLD,              _PAGE_OLD);
  49   DEFINE(PAGE_CLEAN,            _PAGE_CLEAN);
  50   BLANK();
  51   DEFINE(PAGE_SZ,               PAGE_SIZE);
  52   BLANK();
  53   DEFINE(SYS_ERROR0,            0x9f0000);
  54   return 0;
  55 }