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
|
// license:BSD-3-Clause
// copyright-holders:Aaron Giles
/***************************************************************************
didisasm.c
Device disasm interfaces.
***************************************************************************/
#include "emu.h"
//**************************************************************************
// DEVICE DISASM INTERFACE
//**************************************************************************
//-------------------------------------------------
// device_disasm_interface - constructor
//-------------------------------------------------
device_disasm_interface::device_disasm_interface(const machine_config &mconfig, device_t &device)
: device_interface(device, "disasm")
{
}
//-------------------------------------------------
// ~device_disasm_interface - destructor
//-------------------------------------------------
device_disasm_interface::~device_disasm_interface()
{
}
//-------------------------------------------------
// interface_pre_start - work to be done prior to
// actually starting a device
//-------------------------------------------------
void device_disasm_interface::interface_pre_start()
{
// bind delegate
m_dasm_override.bind_relative_to(*device().owner());
}
//-------------------------------------------------
// static_set_dasm_override - configuration
// helper to override disassemble function
//-------------------------------------------------
void device_disasm_interface::static_set_dasm_override(device_t &device, dasm_override_delegate dasm_override)
{
device_disasm_interface *dasm;
if (!device.interface(dasm))
throw emu_fatalerror("MCFG_DEVICE_DISASSEMBLE_OVERRIDE called on device '%s' with no disasm interface", device.tag());
dasm->m_dasm_override = dasm_override;
}
//-------------------------------------------------
// disassemble - interface for disassembly
//-------------------------------------------------
offs_t device_disasm_interface::disassemble(std::ostream &stream, offs_t pc, const u8 *oprom, const u8 *opram, u32 options)
{
offs_t result = 0;
// check for disassembler override
if (!m_dasm_override.isnull())
result = m_dasm_override(device(), stream, pc, oprom, opram, options);
if (result == 0)
result = disasm_disassemble(stream, pc, oprom, opram, options);
// make sure we get good results
assert((result & DASMFLAG_LENGTHMASK) != 0);
#ifdef MAME_DEBUG
device_memory_interface *memory;
if (device().interface(memory))
{
address_space &space = memory->space(AS_PROGRAM);
int bytes = space.address_to_byte(result & DASMFLAG_LENGTHMASK);
assert(bytes >= min_opcode_bytes());
assert(bytes <= max_opcode_bytes());
(void) bytes; // appease compiler
}
#endif
return result;
}
|