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); 74