sim/rx/mem.h

   1 /* mem.h --- interface to memory for M32C simulator.
   2
   3 Copyright (C) 2005, 2007, 2008, 2009, 2010, 2011
   4 Free Software Foundation, Inc.
   5 Contributed by Red Hat, Inc.
   6
   7 This file is part of the GNU simulators.
   8
   9 This program is free software; you can redistribute it and/or modify
  10 it under the terms of the GNU General Public License as published by
  11 the Free Software Foundation; either version 3 of the License, or
  12 (at your option) any later version.
  13
  14 This program is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  21
  22 enum mem_content_type {
  23      MC_UNINIT,
  24      MC_DATA,
  25      MC_PUSHED_PC,
  26      MC_NUM_TYPES
  27 };
  28
  29 enum mem_ptr_action
  30 {
  31   MPA_WRITING,
  32   MPA_READING,
  33   MPA_CONTENT_TYPE,
  34   MPA_DECODE_CACHE
  35 };
  36
  37 void init_mem (void);
  38 void mem_usage_stats (void);
  39 unsigned long mem_usage_cycles (void);
  40
  41 /* rx_mem_ptr returns a pointer which is valid as long as the address
  42    requested remains within the same page.  */
  43 #define PAGE_BITS 12
  44 #define PAGE_SIZE (1 << PAGE_BITS)
  45 #define NONPAGE_MASK (~(PAGE_SIZE-1))
  46
  47 unsigned char *rx_mem_ptr (unsigned long address, enum mem_ptr_action action);
  48 #ifdef RXC_never
  49 RX_Opcode_Decoded **rx_mem_decode_cache (unsigned long address);
  50 #endif
  51
  52 void mem_put_qi (int address, unsigned char value);
  53 void mem_put_hi (int address, unsigned short value);
  54 void mem_put_psi (int address, unsigned long value);
  55 void mem_put_si (int address, unsigned long value);
  56
  57 void mem_put_blk (int address, void *bufptr, int nbytes);
  58
  59 unsigned char mem_get_pc (int address);
  60
  61 unsigned char mem_get_qi (int address);
  62 unsigned short mem_get_hi (int address);
  63 unsigned long mem_get_psi (int address);
  64 unsigned long mem_get_si (int address);
  65
  66 void mem_get_blk (int address, void *bufptr, int nbytes);
  67
  68 int sign_ext (int v, int bits);
  69
  70 void mem_set_content_type (int address, enum mem_content_type type);
  71 void mem_set_content_range (int start_address, int end_address, enum mem_content_type type);
  72 enum mem_content_type mem_get_content_type (int address);