kernel/arch/mn10300/include/asm/kgdb.h

   1 /* Kernel debugger for MN10300
   2  *
   3  * Copyright (C) 2010 Red Hat, Inc. All Rights Reserved.
   4  * Written by David Howells (dhowells@redhat.com)
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public Licence
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the Licence, or (at your option) any later version.
  10  */
  11
  12 #ifndef _ASM_KGDB_H
  13 #define _ASM_KGDB_H
  14
  15 /*
  16  * BUFMAX defines the maximum number of characters in inbound/outbound
  17  * buffers at least NUMREGBYTES*2 are needed for register packets
  18  * Longer buffer is needed to list all threads
  19  */
  20 #define BUFMAX                  1024
  21
  22 /*
  23  * Note that this register image is in a different order than the register
  24  * image that Linux produces at interrupt time.
  25  */
  26 enum regnames {
  27         GDB_FR_D0               = 0,
  28         GDB_FR_D1               = 1,
  29         GDB_FR_D2               = 2,
  30         GDB_FR_D3               = 3,
  31         GDB_FR_A0               = 4,
  32         GDB_FR_A1               = 5,
  33         GDB_FR_A2               = 6,
  34         GDB_FR_A3               = 7,
  35
  36         GDB_FR_SP               = 8,
  37         GDB_FR_PC               = 9,
  38         GDB_FR_MDR              = 10,
  39         GDB_FR_EPSW             = 11,
  40         GDB_FR_LIR              = 12,
  41         GDB_FR_LAR              = 13,
  42         GDB_FR_MDRQ             = 14,
  43
  44         GDB_FR_E0               = 15,
  45         GDB_FR_E1               = 16,
  46         GDB_FR_E2               = 17,
  47         GDB_FR_E3               = 18,
  48         GDB_FR_E4               = 19,
  49         GDB_FR_E5               = 20,
  50         GDB_FR_E6               = 21,
  51         GDB_FR_E7               = 22,
  52
  53         GDB_FR_SSP              = 23,
  54         GDB_FR_MSP              = 24,
  55         GDB_FR_USP              = 25,
  56         GDB_FR_MCRH             = 26,
  57         GDB_FR_MCRL             = 27,
  58         GDB_FR_MCVF             = 28,
  59
  60         GDB_FR_FPCR             = 29,
  61         GDB_FR_DUMMY0           = 30,
  62         GDB_FR_DUMMY1           = 31,
  63
  64         GDB_FR_FS0              = 32,
  65
  66         GDB_FR_SIZE             = 64,
  67 };
  68
  69 #define GDB_ORIG_D0             41
  70 #define NUMREGBYTES             (GDB_FR_SIZE*4)
  71
  72 static inline void arch_kgdb_breakpoint(void)
  73 {
  74         asm(".globl __arch_kgdb_breakpoint; __arch_kgdb_breakpoint: break");
  75 }
  76 extern u8 __arch_kgdb_breakpoint;
  77
  78 #define BREAK_INSTR_SIZE        1
  79 #define CACHE_FLUSH_IS_SAFE     1
  80
  81 #endif /* _ASM_KGDB_H */