arch/nios2/include/asm/kgdb.h

   1 /*
   2  * Copyright (C) 2015 Altera Corporation
   3  * Copyright (C) 2011 Tobias Klauser <tklauser@distanz.ch>
   4  *
   5  * Based on the code posted by Kazuyasu on the Altera Forum at:
   6  * http://www.alteraforum.com/forum/showpost.php?p=77003&postcount=20
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20  *
  21  */
  22
  23 #ifndef _ASM_NIOS2_KGDB_H
  24 #define _ASM_NIOS2_KGDB_H
  25
  26 #define CACHE_FLUSH_IS_SAFE     1
  27 #define BUFMAX                  2048
  28
  29 enum regnames {
  30         GDB_R0 = 0,
  31         GDB_AT,
  32         GDB_R2,
  33         GDB_R3,
  34         GDB_R4,
  35         GDB_R5,
  36         GDB_R6,
  37         GDB_R7,
  38         GDB_R8,
  39         GDB_R9,
  40         GDB_R10,
  41         GDB_R11,
  42         GDB_R12,
  43         GDB_R13,
  44         GDB_R14,
  45         GDB_R15,
  46         GDB_R16,
  47         GDB_R17,
  48         GDB_R18,
  49         GDB_R19,
  50         GDB_R20,
  51         GDB_R21,
  52         GDB_R22,
  53         GDB_R23,
  54         GDB_ET,
  55         GDB_BT,
  56         GDB_GP,
  57         GDB_SP,
  58         GDB_FP,
  59         GDB_EA,
  60         GDB_BA,
  61         GDB_RA,
  62         GDB_PC,
  63         GDB_STATUS,
  64         GDB_ESTATUS,
  65         GDB_BSTATUS,
  66         GDB_IENABLE,
  67         GDB_IPENDING,
  68         GDB_CPUID,
  69         GDB_CTL6,
  70         GDB_EXCEPTION,
  71         GDB_PTEADDR,
  72         GDB_TLBACC,
  73         GDB_TLBMISC,
  74         GDB_ECCINJ,
  75         GDB_BADADDR,
  76         GDB_CONFIG,
  77         GDB_MPUBASE,
  78         GDB_MPUACC,
  79         /* do not change the last entry or anything below! */
  80         GDB_NUMREGBYTES         /* number of registers */
  81 };
  82
  83 #define GDB_SIZEOF_REG          sizeof(u32)
  84 #define DBG_MAX_REG_NUM (49)
  85 #define NUMREGBYTES             (DBG_MAX_REG_NUM * sizeof(GDB_SIZEOF_REG))
  86
  87 #define BREAK_INSTR_SIZE        4
  88 static inline void arch_kgdb_breakpoint(void)
  89 {
  90         __asm__ __volatile__("trap 30\n");
  91 }
  92
  93 #endif /* _ASM_NIOS2_KGDB_H */