1/* mem.h --- interface to memory for M32C simulator.
2
3Copyright (C) 2005-2024 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#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
48unsigned char *rx_mem_ptr (unsigned long address, enum mem_ptr_action action);
49#ifdef RXC_never
50RX_Opcode_Decoded **rx_mem_decode_cache (unsigned long address);
51#endif
52
53void mem_put_qi (int address, unsigned char value);
54void mem_put_hi (int address, unsigned short value);
55void mem_put_psi (int address, unsigned long value);
56void mem_put_si (int address, unsigned long value);
57
58void mem_put_blk (int address, void *bufptr_void, int nbytes);
59
60unsigned char mem_get_pc (int address);
61
62unsigned char mem_get_qi (int address);
63unsigned short mem_get_hi (int address);
64unsigned long mem_get_psi (int address);
65unsigned long mem_get_si (int address);
66
67void mem_get_blk (int address, void *bufptr_void, int nbytes);
68
69int sign_ext (int v, int bits);
70
71void mem_set_content_type (int address, enum mem_content_type type);
72void mem_set_content_range (int start_address, int end_address, enum mem_content_type type);
73enum mem_content_type mem_get_content_type (int address);
74