sim/mcore/sim-main.h

   1 /* Simulator for Motorola's MCore processor
   2    Copyright (C) 2009-2021 Free Software Foundation, Inc.
   3
   4 This file is part of GDB, the GNU debugger.
   5
   6 This program is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 3 of the License, or
   9 (at your option) any later version.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef SIM_MAIN_H
  20 #define SIM_MAIN_H
  21
  22 #define SIM_HAVE_COMMON_SIM_STATE
  23
  24 #include "sim-basics.h"
  25
  26 typedef long int           word;
  27 typedef unsigned long int  uword;
  28
  29 #include "sim-base.h"
  30 #include "bfd.h"
  31
  32 /* The machine state.
  33    This state is maintained in host byte order.  The
  34    fetch/store register functions must translate between host
  35    byte order and the target processor byte order.
  36    Keeping this data in target byte order simplifies the register
  37    read/write functions.  Keeping this data in native order improves
  38    the performance of the simulator.  Simulation speed is deemed more
  39    important.  */
  40
  41 /* The ordering of the mcore_regset structure is matched in the
  42    gdb/config/mcore/tm-mcore.h file in the REGISTER_NAMES macro.  */
  43 struct mcore_regset
  44 {
  45   word gregs[16];       /* primary registers */
  46   word alt_gregs[16];   /* alt register file */
  47   word cregs[32];       /* control registers */
  48   word pc;
  49 };
  50 #define LAST_VALID_CREG 32              /* only 0..12 implemented */
  51 #define NUM_MCORE_REGS  (16 + 16 + LAST_VALID_CREG + 1)
  52
  53 struct _sim_cpu {
  54
  55   union
  56   {
  57     struct mcore_regset regs;
  58     /* Used by the fetch/store reg helpers to access registers linearly.  */
  59     word asints[NUM_MCORE_REGS];
  60   };
  61
  62   /* Used to switch between gregs/alt_gregs based on the control state.  */
  63   word *active_gregs;
  64
  65   int ticks;
  66   int stalls;
  67   int cycles;
  68   int insts;
  69
  70   sim_cpu_base base;
  71 };
  72
  73 #endif
  74