arch/nios2/include/asm/kgdb.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Copyright (C) 2015 Altera Corporation
   4  * Copyright (C) 2011 Tobias Klauser <tklauser@distanz.ch>
   5  *
   6  * Based on the code posted by Kazuyasu on the Altera Forum at:
   7  * http://www.alteraforum.com/forum/showpost.php?p=77003&postcount=20
   8  */
   9
  10 #ifndef _ASM_NIOS2_KGDB_H
  11 #define _ASM_NIOS2_KGDB_H
  12
  13 #define CACHE_FLUSH_IS_SAFE     1
  14 #define BUFMAX                  2048
  15
  16 enum regnames {
  17         GDB_R0 = 0,
  18         GDB_AT,
  19         GDB_R2,
  20         GDB_R3,
  21         GDB_R4,
  22         GDB_R5,
  23         GDB_R6,
  24         GDB_R7,
  25         GDB_R8,
  26         GDB_R9,
  27         GDB_R10,
  28         GDB_R11,
  29         GDB_R12,
  30         GDB_R13,
  31         GDB_R14,
  32         GDB_R15,
  33         GDB_R16,
  34         GDB_R17,
  35         GDB_R18,
  36         GDB_R19,
  37         GDB_R20,
  38         GDB_R21,
  39         GDB_R22,
  40         GDB_R23,
  41         GDB_ET,
  42         GDB_BT,
  43         GDB_GP,
  44         GDB_SP,
  45         GDB_FP,
  46         GDB_EA,
  47         GDB_BA,
  48         GDB_RA,
  49         GDB_PC,
  50         GDB_STATUS,
  51         GDB_ESTATUS,
  52         GDB_BSTATUS,
  53         GDB_IENABLE,
  54         GDB_IPENDING,
  55         GDB_CPUID,
  56         GDB_CTL6,
  57         GDB_EXCEPTION,
  58         GDB_PTEADDR,
  59         GDB_TLBACC,
  60         GDB_TLBMISC,
  61         GDB_ECCINJ,
  62         GDB_BADADDR,
  63         GDB_CONFIG,
  64         GDB_MPUBASE,
  65         GDB_MPUACC,
  66         /* do not change the last entry or anything below! */
  67         GDB_NUMREGBYTES         /* number of registers */
  68 };
  69
  70 #define GDB_SIZEOF_REG          sizeof(u32)
  71 #define DBG_MAX_REG_NUM (49)
  72 #define NUMREGBYTES             (DBG_MAX_REG_NUM * sizeof(GDB_SIZEOF_REG))
  73
  74 #define BREAK_INSTR_SIZE        4
  75 static inline void arch_kgdb_breakpoint(void)
  76 {
  77         __asm__ __volatile__("trap 30\n");
  78 }
  79
  80 #endif /* _ASM_NIOS2_KGDB_H */