mem.h revision 1.1.1.8
1/* mem.h --- interface to memory for M32C simulator. 2 3Copyright (C) 2005-2020 Free Software Foundation, Inc. 4Contributed by Red Hat, Inc. 5 6This file is part of the GNU simulators. 7 8This program is free software; you can redistribute it and/or modify 9it under the terms of the GNU General Public License as published by 10the Free Software Foundation; either version 3 of the License, or 11(at your option) any later version. 12 13This program is distributed in the hope that it will be useful, 14but WITHOUT ANY WARRANTY; without even the implied warranty of 15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16GNU General Public License for more details. 17 18You should have received a copy of the GNU General Public License 19along with this program. If not, see <http://www.gnu.org/licenses/>. */ 20 21enum mem_content_type { 22 MC_UNINIT, 23 MC_DATA, 24 MC_PUSHED_PC, 25 MC_NUM_TYPES 26}; 27 28enum mem_ptr_action 29{ 30 MPA_WRITING, 31 MPA_READING, 32 MPA_CONTENT_TYPE, 33 MPA_DECODE_CACHE 34}; 35 36void init_mem (void); 37void mem_usage_stats (void); 38unsigned long mem_usage_cycles (void); 39 40/* rx_mem_ptr returns a pointer which is valid as long as the address 41 requested remains within the same page. */ 42#define PAGE_BITS 12 43#define PAGE_SIZE (1 << PAGE_BITS) 44#define NONPAGE_MASK (~(PAGE_SIZE-1)) 45 46unsigned char *rx_mem_ptr (unsigned long address, enum mem_ptr_action action); 47#ifdef RXC_never 48RX_Opcode_Decoded **rx_mem_decode_cache (unsigned long address); 49#endif 50 51void mem_put_qi (int address, unsigned char value); 52void mem_put_hi (int address, unsigned short value); 53void mem_put_psi (int address, unsigned long value); 54void mem_put_si (int address, unsigned long value); 55 56void mem_put_blk (int address, void *bufptr, int nbytes); 57 58unsigned char mem_get_pc (int address); 59 60unsigned char mem_get_qi (int address); 61unsigned short mem_get_hi (int address); 62unsigned long mem_get_psi (int address); 63unsigned long mem_get_si (int address); 64 65void mem_get_blk (int address, void *bufptr, int nbytes); 66 67int sign_ext (int v, int bits); 68 69void mem_set_content_type (int address, enum mem_content_type type); 70void mem_set_content_range (int start_address, int end_address, enum mem_content_type type); 71enum mem_content_type mem_get_content_type (int address); 72