blob: 4ccacaef94dfb2dce7cfbdcfde65e8cc3c70ba25 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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/config.h>
16#include <linux/sched.h>
17#include <linux/mm.h>
18
19#include <asm/pgtable.h>
20#include <asm/uaccess.h>
21
22/*
23 * Make sure that the compiler and target are compatible.
24 */
25#if defined(__APCS_32__) && defined(CONFIG_CPU_26)
26#error Sorry, your compiler targets APCS-32 but this kernel requires APCS-26
27#endif
28#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 95)
29#error Sorry, your compiler is known to miscompile kernels. Only use gcc 2.95.3 and later.
30#endif
31#if __GNUC__ == 2 && __GNUC_MINOR__ == 95
32/* shame we can't detect the .1 or .2 releases */
33#warning GCC 2.95.2 and earlier miscompiles kernels.
34#endif
35
36/* Use marker if you need to separate the values later */
37
38#define DEFINE(sym, val) \
39 asm volatile("\n->" #sym " %0 " #val : : "i" (val))
40
41#define BLANK() asm volatile("\n->" : : )
42
43int main(void)
44{
45 DEFINE(TSK_ACTIVE_MM, offsetof(struct task_struct, active_mm));
46 BLANK();
47 DEFINE(VMA_VM_MM, offsetof(struct vm_area_struct, vm_mm));
48 DEFINE(VMA_VM_FLAGS, offsetof(struct vm_area_struct, vm_flags));
49 BLANK();
50 DEFINE(VM_EXEC, VM_EXEC);
51 BLANK();
52 BLANK();
53 DEFINE(PAGE_PRESENT, _PAGE_PRESENT);
54 DEFINE(PAGE_READONLY, _PAGE_READONLY);
55 DEFINE(PAGE_NOT_USER, _PAGE_NOT_USER);
56 DEFINE(PAGE_OLD, _PAGE_OLD);
57 DEFINE(PAGE_CLEAN, _PAGE_CLEAN);
58 BLANK();
59 DEFINE(PAGE_SZ, PAGE_SIZE);
60 BLANK();
61 DEFINE(SYS_ERROR0, 0x9f0000);
62 return 0;
63}