sim/frv/registers.h

   1 /* Register definitions for the FRV simulator
   2    Copyright (C) 2000-2024 Free Software Foundation, Inc.
   3    Contributed by Red Hat.
   4
   5 This file is part of the GNU Simulators.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef REGISTERS_H
  21 #define REGISTERS_H
  22
  23 #define FRV_MAX_GR  64
  24 #define FRV_MAX_FR  64
  25 #define FRV_MAX_CPR 64
  26 #define FRV_MAX_SPR 4096
  27
  28 /* Register init, reset values and read_only masks.  */
  29 typedef struct
  30 {
  31   USI init_value;     /* initial value */
  32   USI reset_value;    /* value for software reset */
  33   USI reset_mask;     /* bits which are reset */
  34   USI read_only_mask; /* bits which are read-only */
  35   char implemented;   /* 1==register is implemented */
  36   char supervisor;    /* 1==register is supervisor-only */
  37 } FRV_SPR_CONTROL_INFO;
  38
  39 typedef struct
  40 {
  41   int fr;                    /* FR registers implemented */
  42   int cpr;                   /* coprocessor registers implemented */
  43   FRV_SPR_CONTROL_INFO *spr; /* SPR implementation details */
  44 } FRV_REGISTER_CONTROL;
  45
  46 void frv_register_control_init (SIM_CPU *);
  47 void frv_initialize_spr (SIM_CPU *);
  48 void frv_reset_spr (SIM_CPU *);
  49
  50 void frv_check_spr_access (SIM_CPU *, UINT);
  51 void frv_check_spr_read_access (SIM_CPU *, UINT);
  52 void frv_check_spr_write_access (SIM_CPU *, UINT);
  53
  54 void frv_fr_registers_available (SIM_CPU *, int *, int *);
  55 void frv_gr_registers_available (SIM_CPU *, int *, int *);
  56 int  frv_check_register_access (SIM_CPU *, SI, int, int);
  57 int  frv_check_gr_access (SIM_CPU *, SI);
  58 int  frv_check_fr_access (SIM_CPU *, SI);
  59
  60 #endif /* REGISTERS_H */