1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
/////////////////////////////////////////////////////////////////////////
// $Id: memory.h,v 1.38 2006/05/31 17:20:52 sshwarts Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2001 MandrakeSoft S.A.
//
// MandrakeSoft S.A.
// 43, rue d'Aboukir
// 75002 Paris - France
// http://www.linux-mandrake.com/
// http://www.mandrakesoft.com/
//
// I/O memory handlers API Copyright (C) 2003 by Frank Cornelis
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#ifndef BX_MEM_H
# define BX_MEM_H 1
#define BX_USE_MEM_SMF 0
#if BX_USE_MEM_SMF
// if static member functions on, then there is only one memory
# define BX_MEM_SMF static
# define BX_MEM_THIS BX_MEM(0)->
#else
# define BX_MEM_SMF
# define BX_MEM_THIS this->
#endif
class BX_CPU_C;
// alignment of memory vector, must be a power of 2
#define BX_MEM_VECTOR_ALIGN 4096
#define BIOSROMSZ (1 << 19) // 512KB BIOS ROM @0xfff80000, must be a power of 2
#define EXROMSIZE 0x20000 // ROMs 0xc0000-0xdffff (area 0xe0000-0xfffff=bios mapped)
#define BIOS_MASK (BIOSROMSZ-1)
#define EXROM_MASK (EXROMSIZE-1)
typedef bx_bool (*memory_handler_t)(unsigned long addr, unsigned long len, void *data, void *param);
struct memory_handler_struct {
struct memory_handler_struct *next;
void *param;
bx_phy_address begin;
bx_phy_address end;
memory_handler_t read_handler;
memory_handler_t write_handler;
};
#define SMRAM_CODE 1
#define SMRAM_DATA 2
class BOCHSAPI BX_MEM_C : public logfunctions {
private:
struct memory_handler_struct **memory_handlers;
bx_bool rom_present[65];
bx_bool pci_enabled;
bx_bool smram_available;
bx_bool smram_enable;
bx_bool smram_restricted;
public:
Bit8u *actual_vector;
Bit8u *vector; // aligned correctly
size_t len;
size_t megabytes; // (len in Megabytes)
Bit8u *rom; // 512k BIOS rom space + 128k expansion rom space
Bit8u *bogus; // 4k for unexisting memory
#if BX_DEBUGGER
Bit8u *dbg_dirty_pages;
#endif
BX_MEM_C();
~BX_MEM_C();
BX_MEM_SMF void alloc_vector_aligned (size_t bytes, size_t alignment) BX_CPP_AttrRegparmN(2);
BX_MEM_SMF void init_memory(int memsize);
BX_MEM_SMF void enable_smram(bx_bool enable, bx_bool restricted);
BX_MEM_SMF void disable_smram(void);
BX_MEM_SMF bx_bool is_smram_accessible(void);
BX_MEM_SMF void readPhysicalPage(BX_CPU_C *cpu, bx_phy_address addr,
unsigned len, void *data) BX_CPP_AttrRegparmN(3);
BX_MEM_SMF void writePhysicalPage(BX_CPU_C *cpu, bx_phy_address addr,
unsigned len, void *data) BX_CPP_AttrRegparmN(3);
BX_MEM_SMF void load_ROM(const char *path, bx_phy_address romaddress, Bit8u type);
BX_MEM_SMF void load_RAM(const char *path, bx_phy_address romaddress, Bit8u type);
BX_MEM_SMF Bit32u get_memory_in_k(void);
BX_MEM_SMF bx_bool dbg_fetch_mem(bx_phy_address addr, unsigned len, Bit8u *buf);
BX_MEM_SMF bx_bool dbg_set_mem(bx_phy_address addr, unsigned len, Bit8u *buf);
BX_MEM_SMF bx_bool dbg_crc32(bx_phy_address addr1, bx_phy_address addr2, Bit32u *crc);
BX_MEM_SMF Bit8u* getHostMemAddr(BX_CPU_C *cpu, bx_phy_address a20Addr, unsigned op, unsigned access_type);
BX_MEM_SMF bx_bool registerMemoryHandlers(void *param, memory_handler_t read_handler,
memory_handler_t write_handler, bx_phy_address begin_addr, bx_phy_address end_addr);
BX_MEM_SMF bx_bool unregisterMemoryHandlers(memory_handler_t read_handler, memory_handler_t write_handler,
bx_phy_address begin_addr, bx_phy_address end_addr);
BX_MEM_SMF Bit32u get_num_allocated_pages(void);
};
#if BX_PROVIDE_CPU_MEMORY==1
#if BX_ADDRESS_SPACES==1
BOCHSAPI extern BX_MEM_C bx_mem;
#else
BOCHSAPI extern BX_MEM_C bx_mem_array[BX_ADDRESS_SPACES];
#endif /* BX_ADDRESS_SPACES */
#endif /* BX_PROVIDE_CPU_MEMORY==1 */
#if BX_DEBUGGER
# define BX_DBG_DIRTY_PAGE(page) BX_MEM(0)->dbg_dirty_pages[page] = 1;
#else
# define BX_DBG_DIRTY_PAGE(page)
#endif
#endif
|
