sim/rx/mem.h

   1 /* mem.h --- interface to memory for M32C simulator.
   2
   3 Copyright (C) 2005-2024 Free Software Foundation, Inc.
   4 Contributed by Red Hat, Inc.
   5
   6 This file is part of the GNU simulators.
   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 3 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 enum mem_content_type {
  22      MC_UNINIT,
  23      MC_DATA,
  24      MC_PUSHED_PC,
  25      MC_NUM_TYPES
  26 };
  27
  28 enum mem_ptr_action
  29 {
  30   MPA_WRITING,
  31   MPA_READING,
  32   MPA_CONTENT_TYPE,
  33   MPA_DECODE_CACHE
  34 };
  35
  36 void init_mem (void);
  37 void mem_usage_stats (void);
  38 unsigned long mem_usage_cycles (void);
  39
  40 #undef PAGE_SIZE        /* Cleanup system headers.  */
  41
  42 /* rx_mem_ptr returns a pointer which is valid as long as the address
  43    requested remains within the same page.  */
  44 #define PAGE_BITS 12
  45 #define PAGE_SIZE (1 << PAGE_BITS)
  46 #define NONPAGE_MASK (~(PAGE_SIZE-1))
  47
  48 unsigned char *rx_mem_ptr (unsigned long address, enum mem_ptr_action action);
  49 #ifdef RXC_never
  50 RX_Opcode_Decoded **rx_mem_decode_cache (unsigned long address);
  51 #endif
  52
  53 void mem_put_qi (int address, unsigned char value);
  54 void mem_put_hi (int address, unsigned short value);
  55 void mem_put_psi (int address, unsigned long value);
  56 void mem_put_si (int address, unsigned long value);
  57
  58 void mem_put_blk (int address, void *bufptr_void, int nbytes);
  59
  60 unsigned char mem_get_pc (int address);
  61
  62 unsigned char mem_get_qi (int address);
  63 unsigned short mem_get_hi (int address);
  64 unsigned long mem_get_psi (int address);
  65 unsigned long mem_get_si (int address);
  66
  67 void mem_get_blk (int address, void *bufptr_void, int nbytes);
  68
  69 int sign_ext (int v, int bits);
  70
  71 void mem_set_content_type (int address, enum mem_content_type type);
  72 void mem_set_content_range (int start_address, int end_address, enum mem_content_type type);
  73 enum mem_content_type mem_get_content_type (int address);