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
|
// license:BSD-3-Clause
// copyright-holders:Curt Coder
/***************************************************************************
cosdasm.c
Simple RCA COSMAC disassembler.
Written by Curt Coder
***************************************************************************/
#ifndef MAME_CPU_COSMAC_COSDASM_H
#define MAME_CPU_COSMAC_COSDASM_H
#pragma once
class cosmac_disassembler : public util::disasm_interface
{
public:
enum
{
TYPE_1801,
TYPE_1802,
TYPE_1805
};
class config {
public:
virtual ~config() = default;
virtual uint8_t get_p() const = 0;
virtual uint8_t get_x() const = 0;
};
cosmac_disassembler(int variant, config *conf = nullptr);
virtual ~cosmac_disassembler() = default;
virtual u32 opcode_alignment() const override;
virtual offs_t disassemble(std::ostream &stream, offs_t pc, const data_buffer &opcodes, const data_buffer ¶ms) override;
private:
int m_variant;
offs_t implied(const uint8_t opcode);
offs_t immediate(offs_t &pc, const data_buffer ¶ms);
offs_t double_immediate(offs_t &pc, const data_buffer ¶ms);
offs_t short_branch(offs_t base_pc, offs_t &pc, const data_buffer ¶ms);
offs_t long_branch(offs_t &pc, const data_buffer ¶ms);
offs_t short_skip(offs_t pc);
offs_t long_skip(offs_t pc);
void disassemble_68(std::ostream &stream, offs_t base_pc, offs_t &pc, const data_buffer &opcodes, const data_buffer ¶ms);
config *const m_config;
};
#endif
|