Blame view

kernel/linux-rt-4.4.41/arch/tile/include/asm/unaligned.h 1.56 KB
5113f6f70   김현기   kernel add
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
  /*
   * Copyright 2010 Tilera Corporation. All Rights Reserved.
   *
   *   This program is free software; you can redistribute it and/or
   *   modify it under the terms of the GNU General Public License
   *   as published by the Free Software Foundation, version 2.
   *
   *   This program is distributed in the hope that it will be useful, but
   *   WITHOUT ANY WARRANTY; without even the implied warranty of
   *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
   *   NON INFRINGEMENT.  See the GNU General Public License for
   *   more details.
   */
  
  #ifndef _ASM_TILE_UNALIGNED_H
  #define _ASM_TILE_UNALIGNED_H
  
  /*
   * We could implement faster get_unaligned_[be/le]64 using the ldna
   * instruction on tilegx; however, we need to either copy all of the
   * other generic functions to here (which is pretty ugly) or else
   * modify both the generic code and other arch code to allow arch
   * specific unaligned data access functions.  Given these functions
   * are not often called, we'll stick with the generic version.
   */
  #include <asm-generic/unaligned.h>
  
  /*
   * Is the kernel doing fixups of unaligned accesses?  If <0, no kernel
   * intervention occurs and SIGBUS is delivered with no data address
   * info.  If 0, the kernel single-steps the instruction to discover
   * the data address to provide with the SIGBUS.  If 1, the kernel does
   * a fixup.
   */
  extern int unaligned_fixup;
  
  /* Is the kernel printing on each unaligned fixup? */
  extern int unaligned_printk;
  
  /* Number of unaligned fixups performed */
  extern unsigned int unaligned_fixup_count;
  
  #endif /* _ASM_TILE_UNALIGNED_H */