summaryrefslogtreecommitdiffstatshomepage
path: root/src/emu/devcb.h
blob: 833d6938a1c9742e25f34092d0fa19cabf3b9633 (plain) (blame)
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
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
// license:BSD-3-Clause
// copyright-holders:Aaron Giles
/***************************************************************************

    devcb.h

    Device callback interface helpers.

***************************************************************************/

#pragma once

#ifndef __EMU_H__
#error Dont include this file directly; include emu.h instead.
#endif

#ifndef MAME_EMU_DEVCB_H
#define MAME_EMU_DEVCB_H

#include <functional>
#include <type_traits>
#include <utility>


namespace emu { namespace detail {

template <typename Delegate> struct devcb_delegate_initialiser
{
	devcb_delegate_initialiser(char const *tag, Delegate &&delegate) : m_base(nullptr), m_delegate(std::move(delegate))
	{
	}
	template <typename T>
	devcb_delegate_initialiser(T &device, std::enable_if_t<is_device_implementation<T>::value, Delegate &&> delegate) : m_base(&device), m_delegate(std::move(delegate))
	{
	}
	template <typename T>
	devcb_delegate_initialiser(T &interface, std::enable_if_t<is_device_interface<T>::value, Delegate &&> delegate) : m_base(&interface.device()), m_delegate(std::move(delegate))
	{
	}
	template <typename DeviceClass, bool Required>
	devcb_delegate_initialiser(device_finder<DeviceClass, Required> const &finder, Delegate &&delegate) : m_base(&finder.finder_target().first), m_delegate(std::move(delegate))
	{
	}

	device_t *m_base;
	Delegate &&m_delegate;
};

inline char const *devcb_delegate_get_tag(char const *tag) { return tag; }
template <typename T>
inline std::enable_if_t<is_device_implementation<T>::value, char const *> devcb_delegate_get_tag(T &device) { return DEVICE_SELF; }
template <typename T>
inline std::enable_if_t<is_device_interface<T>::value, char const *> devcb_delegate_get_tag(T &interface) { return DEVICE_SELF; }
template <typename DeviceClass, bool Required>
inline char const *devcb_delegate_get_tag(device_finder<DeviceClass, Required> const &finder) { return finder.finder_tag(); }

template <typename DescType> struct devcb_tag_desc_creator
{
	static DescType create(char const *tag)
	{
		return DescType{ nullptr, tag };
	}
	static DescType create(device_t &device)
	{
		return DescType{ &device, DEVICE_SELF };
	}
	static DescType create(device_interface &interface)
	{
		return DescType{ &interface.device(), DEVICE_SELF };
	}
	template <typename DeviceClass, bool Required>
	static DescType create(device_finder<DeviceClass, Required> const &finder)
	{
		std::pair<device_t &, char const *> const target(finder.finder_target());
		return DescType{ &target.first, target.second };
	}
};

template <typename DescType> struct devcb_line_desc_creator
{
	static DescType create(char const *tag, int inputnum)
	{
		return DescType{ nullptr, tag, inputnum };
	}
	static DescType create(device_t &device, int inputnum)
	{
		return DescType{ &device, DEVICE_SELF, inputnum };
	}
	static DescType create(device_interface &interface, int inputnum)
	{
		return DescType{ &interface.device(), DEVICE_SELF, inputnum };
	}
	template <typename DeviceClass, bool Required>
	static DescType create(device_finder<DeviceClass, Required> const &finder, int inputnum)
	{
		std::pair<device_t &, char const *> const target(finder.finder_target());
		return DescType{ &target.first, target.second, inputnum };
	}
};

} } // namespace emu::detail


//**************************************************************************
//  MACROS
//**************************************************************************

// wrappers for read callbacks into any tagged device
#define DEVCB_READLINE(tag, _class, _func) (emu::detail::devcb_delegate_initialiser<read_line_delegate>((tag), read_line_delegate(&_class::_func, #_class "::" #_func, emu::detail::devcb_delegate_get_tag(tag), (_class *)nullptr)))
#define DEVCB_READ8(tag, _class, _func) (emu::detail::devcb_delegate_initialiser<read8_delegate>((tag), read8_delegate(&_class::_func, #_class "::" #_func, emu::detail::devcb_delegate_get_tag(tag), (_class *)nullptr)))
#define DEVCB_READ16(tag, _class, _func) (emu::detail::devcb_delegate_initialiser<read16_delegate>((tag), read16_delegate(&_class::_func, #_class "::" #_func, emu::detail::devcb_delegate_get_tag(tag), (_class *)nullptr)))
#define DEVCB_READ32(tag, _class, _func) (emu::detail::devcb_delegate_initialiser<read32_delegate>((tag), read32_delegate(&_class::_func, #_class "::" #_func, emu::detail::devcb_delegate_get_tag(tag), (_class *)nullptr)))
#define DEVCB_READ64(tag, _class, _func) (emu::detail::devcb_delegate_initialiser<read64_delegate>((tag), read64_delegate(&_class::_func, #_class "::" #_func, emu::detail::devcb_delegate_get_tag(tag), (_class *)nullptr)))

// wrappers for write callbacks into any tagged device
#define DEVCB_WRITELINE(tag, _class, _func) (emu::detail::devcb_delegate_initialiser<write_line_delegate>((tag), write_line_delegate(&_class::_func, #_class "::" #_func, emu::detail::devcb_delegate_get_tag(tag), (_class *)nullptr)))
#define DEVCB_WRITE8(tag, _class, _func) (emu::detail::devcb_delegate_initialiser<write8_delegate>((tag), write8_delegate(&_class::_func, #_class "::" #_func, emu::detail::devcb_delegate_get_tag(tag), (_class *)nullptr)))
#define DEVCB_WRITE16(tag, _class, _func) (emu::detail::devcb_delegate_initialiser<write16_delegate>((tag), write16_delegate(&_class::_func, #_class "::" #_func, emu::detail::devcb_delegate_get_tag(tag), (_class *)nullptr)))
#define DEVCB_WRITE32(tag, _class, _func) (emu::detail::devcb_delegate_initialiser<write32_delegate>((tag), write32_delegate(&_class::_func, #_class "::" #_func, emu::detail::devcb_delegate_get_tag(tag), (_class *)nullptr)))
#define DEVCB_WRITE64(tag, _class, _func) (emu::detail::devcb_delegate_initialiser<write64_delegate>((tag), write64_delegate(&_class::_func, #_class "::" #_func, emu::detail::devcb_delegate_get_tag(tag), (_class *)nullptr)))

// machine config helpers to add shift, mask, or address space configuration
#define MCFG_DEVCB_RSHIFT(_shift) devcb->set_rshift(_shift);
#define MCFG_DEVCB_MASK(_mask) devcb->set_mask(_mask);
#define MCFG_DEVCB_BIT(_bit) devcb->set_rshift(-(_bit)).set_mask(1ULL << (_bit));
#define MCFG_DEVCB_XOR(_xor) devcb->set_xor(_xor);
#define MCFG_DEVCB_INVERT devcb->set_xor(~u64(0));
#define MCFG_DEVCB_ADDRESS_SPACE(_device, _spacenum) devcb->set_space(_device, _spacenum);

// machine config helpers for chaining callbacks
#define MCFG_DEVCB_CHAIN_INPUT(_desc) devcb = &downcast<devcb_read_base &>(*devcb).chain_alloc().set_callback(DEVCB_##_desc);
#define MCFG_DEVCB_CHAIN_OUTPUT(_desc) devcb = &downcast<devcb_write_base &>(*devcb).chain_alloc().set_callback(DEVCB_##_desc);


//**************************************************************************
//  TYPE DEFINITIONS
//**************************************************************************

// base delegate type for a read_line/write_line
typedef device_delegate<int ()> read_line_delegate;
typedef device_delegate<void (int)> write_line_delegate;


// ======================> devcb_base

class devcb_base
{
protected:
	// enumerate the types of callbacks
	enum callback_type
	{
		CALLBACK_NONE,
		CALLBACK_LINE,
		CALLBACK_8,
		CALLBACK_16,
		CALLBACK_32,
		CALLBACK_64,
		CALLBACK_IOPORT,
		CALLBACK_MEMBANK,
		CALLBACK_OUTPUT,
		CALLBACK_LOG,
		CALLBACK_CONSTANT,
		CALLBACK_INPUTLINE,
		CALLBACK_ASSERTLINE,
		CALLBACK_CLEARLINE,
		CALLBACK_HOLDLINE
	};

	// construction/destruction
	devcb_base(device_t &device, u64 defmask);
	virtual ~devcb_base();

	template <callback_type Type> struct tag_desc
	{
		device_t *m_base;
		char const *m_tag;
	};

	template <callback_type Type> struct line_desc
	{
		device_t *m_base;
		char const *m_tag;
		int m_inputnum;
	};

public:
	// getters
	bool isnull() const { return (m_type == CALLBACK_NONE); }

	// additional configuration
	devcb_base &set_space(const char *device, int space = 0) { m_space_tag = device; m_space_num = space; return *this; }
	devcb_base &set_rshift(int rshift) { m_rshift = rshift; return *this; }
	devcb_base &set_mask(u64 mask) { m_mask = mask; return *this; }
	devcb_base &set_xor(u64 xorval) { m_xor = xorval; return *this; }

	// construction helper classes
	struct null_desc
	{
	};

	using ioport_desc = tag_desc<CALLBACK_IOPORT>;
	using membank_desc = tag_desc<CALLBACK_MEMBANK>;
	using output_desc = tag_desc<CALLBACK_OUTPUT>;

	struct constant_desc
	{
		u64 m_value;
	};

	struct logger_desc
	{
		const char *m_string;
	};

	using inputline_desc = line_desc<CALLBACK_INPUTLINE>;
	using assertline_desc = line_desc<CALLBACK_ASSERTLINE>;
	using clearline_desc = line_desc<CALLBACK_CLEARLINE>;
	using holdline_desc = line_desc<CALLBACK_HOLDLINE>;

	// shared callback setters
	devcb_base &set_callback(null_desc null) { reset(CALLBACK_NONE); return *this; }
	template <callback_type Type> devcb_base &set_callback(tag_desc<Type> desc)
	{
		if (desc.m_base) reset(*desc.m_base, Type);
		else reset(Type);
		m_target_tag = desc.m_tag;
		return *this;
	}
	devcb_base &set_callback(constant_desc constant) { reset(CALLBACK_CONSTANT); m_target_int = constant.m_value; return *this; }
	devcb_base &set_callback(logger_desc logger) { reset(CALLBACK_LOG); m_target_tag = logger.m_string; return *this; }
	void reset() { reset(m_owner, CALLBACK_NONE); }

protected:
	// internal helpers
	inline u64 shift_mask(u64 value) const { return ((m_rshift < 0) ? (value << -m_rshift) : (value >> m_rshift)) & m_mask; }
	inline u64 shift_mask_xor(u64 value) const { return (((m_rshift < 0) ? (value << -m_rshift) : (value >> m_rshift)) ^ m_xor) & m_mask; }
	inline u64 unshift_mask(u64 value) const { return (m_rshift < 0) ? ((value & m_mask) >> -m_rshift) : ((value & m_mask) << m_rshift); }
	inline u64 unshift_mask_xor(u64 value) const { return (m_rshift < 0) ? (((value ^ m_xor) & m_mask) >> -m_rshift) : (((value ^ m_xor) & m_mask) << m_rshift); }
	void reset(callback_type type);
	void reset(device_t &base, callback_type type);
	virtual void devcb_reset() = 0;
	void resolve_ioport();
	void resolve_membank();
	void resolve_output();
	void resolve_inputline();
	void resolve_space();

	// the callback target is going to be one of these
	union callback_target
	{
		void *              ptr;
		device_t *          device;
		ioport_port *       ioport;
		memory_bank *       membank;
		output_manager::output_item *item;
	};

	// configuration
	device_t &          m_owner;                // reference to our owning device
	std::reference_wrapper<device_t> m_base;    // device to resolve relative to
	callback_type       m_type;                 // type of callback registered
	const char *        m_target_tag;           // tag of target object
	u64                 m_target_int;           // integer value of target object
	const char *        m_space_tag;            // tag of address space device
	int                 m_space_num;            // address space number of space device

	// derived state
	address_space *     m_space;                // target address space
	callback_target     m_target;               // resolved pointer to target object
	int                 m_rshift;               // right shift to apply to data read
	u64                 m_mask;                 // mask to apply to data read
	const u64           m_defmask;              // default mask
	u64                 m_xor;                  // XOR to apply to data read
};


// ======================> devcb_read_base

class devcb_read_base : public devcb_base
{
protected:
	// construction/destruction
	devcb_read_base(device_t &device, u64 defmask, bool chained = false);

	template <typename Delegate, typename Dummy> struct set_helper
	{
		static constexpr bool valid = false;
	};
	template <typename Dummy> struct set_helper<read_line_delegate, Dummy>
	{
		static constexpr bool valid = true;
		static constexpr callback_type type = CALLBACK_LINE;
		static void apply(devcb_read_base &devcb, read_line_delegate &&delegate) { devcb.m_readline = std::move(delegate); }
	};
	template <typename Dummy> struct set_helper<read8_delegate, Dummy>
	{
		static constexpr bool valid = true;
		static constexpr callback_type type = CALLBACK_8;
		static void apply(devcb_read_base &devcb, read8_delegate &&delegate) { devcb.m_read8 = std::move(delegate); }
	};
	template <typename Dummy> struct set_helper<read16_delegate, Dummy>
	{
		static constexpr bool valid = true;
		static constexpr callback_type type = CALLBACK_16;
		static void apply(devcb_read_base &devcb, read16_delegate &&delegate) { devcb.m_read16 = std::move(delegate); }
	};
	template <typename Dummy> struct set_helper<read32_delegate, Dummy>
	{
		static constexpr bool valid = true;
		static constexpr callback_type type = CALLBACK_32;
		static void apply(devcb_read_base &devcb, read32_delegate &&delegate) { devcb.m_read32 = std::move(delegate); }
	};
	template <typename Dummy> struct set_helper<read64_delegate, Dummy>
	{
		static constexpr bool valid = true;
		static constexpr callback_type type = CALLBACK_64;
		static void apply(devcb_read_base &devcb, read64_delegate &&delegate) { devcb.m_read64 = std::move(delegate); }
	};

public:
	// callback configuration
	using devcb_base::set_callback;
	template <typename Delegate>
	std::enable_if_t<set_helper<Delegate, void>::valid, devcb_read_base &> set_callback(emu::detail::devcb_delegate_initialiser<Delegate> &&desc)
	{
		if (desc.m_base) reset(*desc.m_base, set_helper<Delegate, void>::type);
		else reset(set_helper<Delegate, void>::type);
		set_helper<Delegate, void>::apply(*this, std::move(desc.m_delegate));
		return *this;
	}
	template <typename... Params> auto &chain(Params &&... args) { return chain_alloc().set_callback(std::forward<Params>(args)...); }
	devcb_read_base &chain_alloc();

	// resolution
	void resolve();
	void resolve_safe(u64 none_constant_value);

	// validity checking
	void validity_check(validity_checker &valid) const;

protected:
	// internal helpers
	virtual void devcb_reset() override;
	inline u64 read(address_space &space, offs_t offset, u64 mask);

private:
	// adapters
	u64 read_unresolved_adapter(address_space &space, offs_t offset, u64 mask);
	u64 read_line_adapter(address_space &space, offs_t offset, u64 mask);
	u64 read8_adapter(address_space &space, offs_t offset, u64 mask);
	u64 read16_adapter(address_space &space, offs_t offset, u64 mask);
	u64 read32_adapter(address_space &space, offs_t offset, u64 mask);
	u64 read64_adapter(address_space &space, offs_t offset, u64 mask);
	u64 read_ioport_adapter(address_space &space, offs_t offset, u64 mask);
	u64 read_logged_adapter(address_space &space, offs_t offset, u64 mask);
	u64 read_constant_adapter(address_space &space, offs_t offset, u64 mask);

	// configuration
	read_line_delegate  m_readline;             // copy of registered line reader
	read8_delegate      m_read8;                // copy of registered 8-bit reader
	read16_delegate     m_read16;               // copy of registered 16-bit reader
	read32_delegate     m_read32;               // copy of registered 32-bit reader
	read64_delegate     m_read64;               // copy of registered 64-bit reader

	// derived state
	typedef u64 (devcb_read_base::*adapter_func)(address_space &, offs_t, u64);
	adapter_func        m_adapter;              // actual callback to invoke
	std::unique_ptr<devcb_read_base> m_chain;   // next callback for chained input
};


// ======================> devcb_write_base

class devcb_write_base : public devcb_base
{
protected:
	// construction/destruction
	devcb_write_base(device_t &device, u64 defmask, bool chained = false);

	template <typename Delegate, typename Dummy> struct set_helper
	{
		static constexpr bool valid = false;
	};
	template <typename Dummy> struct set_helper<write_line_delegate, Dummy>
	{
		static constexpr bool valid = true;
		static constexpr callback_type type = CALLBACK_LINE;
		static void apply(devcb_write_base &devcb, write_line_delegate &&delegate) { devcb.m_writeline = std::move(delegate); }
	};
	template <typename Dummy> struct set_helper<write8_delegate, Dummy>
	{
		static constexpr bool valid = true;
		static constexpr callback_type type = CALLBACK_8;
		static void apply(devcb_write_base &devcb, write8_delegate &&delegate) { devcb.m_write8 = std::move(delegate); }
	};
	template <typename Dummy> struct set_helper<write16_delegate, Dummy>
	{
		static constexpr bool valid = true;
		static constexpr callback_type type = CALLBACK_16;
		static void apply(devcb_write_base &devcb, write16_delegate &&delegate) { devcb.m_write16 = std::move(delegate); }
	};
	template <typename Dummy> struct set_helper<write32_delegate, Dummy>
	{
		static constexpr bool valid = true;
		static constexpr callback_type type = CALLBACK_32;
		static void apply(devcb_write_base &devcb, write32_delegate &&delegate) { devcb.m_write32 = std::move(delegate); }
	};
	template <typename Dummy> struct set_helper<write64_delegate, Dummy>
	{
		static constexpr bool valid = true;
		static constexpr callback_type type = CALLBACK_64;
		static void apply(devcb_write_base &devcb, write64_delegate &&delegate) { devcb.m_write64 = std::move(delegate); }
	};

public:
	// callback configuration
	using devcb_base::set_callback;
	template <typename Delegate>
	std::enable_if_t<set_helper<Delegate, void>::valid, devcb_write_base &> set_callback(emu::detail::devcb_delegate_initialiser<Delegate> &&desc)
	{
		if (desc.m_base) reset(*desc.m_base, set_helper<Delegate, void>::type);
		else reset(set_helper<Delegate, void>::type);
		set_helper<Delegate, void>::apply(*this, std::move(desc.m_delegate));
		return *this;
	}
	template <callback_type Type> devcb_write_base &set_callback(line_desc<Type> desc)
	{
		if (desc.m_base) reset(*desc.m_base, Type);
		else reset(Type);
		m_target_tag = desc.m_tag;
		m_target_int = desc.m_inputnum;
		return *this;
	}
	template <typename... Params> auto &chain(Params &&... args) { return chain_alloc().set_callback(std::forward<Params>(args)...); }
	devcb_write_base &chain_alloc();

	// resolution
	void resolve();
	void resolve_safe();

	// validity checking
	void validity_check(validity_checker &valid) const;

protected:
	// internal helpers
	virtual void devcb_reset() override;
	inline void write(address_space &space, offs_t offset, u64 data, u64 mask);

private:
	// adapters
	void write_unresolved_adapter(address_space &space, offs_t offset, u64 data, u64 mask);
	void write_line_adapter(address_space &space, offs_t offset, u64 data, u64 mask);
	void write8_adapter(address_space &space, offs_t offset, u64 data, u64 mask);
	void write16_adapter(address_space &space, offs_t offset, u64 data, u64 mask);
	void write32_adapter(address_space &space, offs_t offset, u64 data, u64 mask);
	void write64_adapter(address_space &space, offs_t offset, u64 data, u64 mask);
	void write_ioport_adapter(address_space &space, offs_t offset, u64 data, u64 mask);
	void write_membank_adapter(address_space &space, offs_t offset, u64 data, u64 mask);
	void write_output_adapter(address_space &space, offs_t offset, u64 data, u64 mask);
	void write_logged_adapter(address_space &space, offs_t offset, u64 data, u64 mask);
	void write_noop_adapter(address_space &space, offs_t offset, u64 data, u64 mask);
	void write_inputline_adapter(address_space &space, offs_t offset, u64 data, u64 mask);
	void write_assertline_adapter(address_space &space, offs_t offset, u64 data, u64 mask);
	void write_clearline_adapter(address_space &space, offs_t offset, u64 data, u64 mask);
	void write_holdline_adapter(address_space &space, offs_t offset, u64 data, u64 mask);

	// configuration
	write_line_delegate m_writeline;            // copy of registered line writer
	write8_delegate     m_write8;               // copy of registered 8-bit writer
	write16_delegate    m_write16;              // copy of registered 16-bit writer
	write32_delegate    m_write32;              // copy of registered 32-bit writer
	write64_delegate    m_write64;              // copy of registered 64-bit writer

	// derived state
	typedef void (devcb_write_base::*adapter_func)(address_space &, offs_t, u64, u64);
	adapter_func        m_adapter;              // actual callback to invoke
	std::unique_ptr<devcb_write_base> m_chain;  // next callback for chained output
};


// ======================> devcb_read_line

class devcb_read_line : public devcb_read_base
{
public:
	devcb_read_line(device_t &device) : devcb_read_base(device, 1) { }
	int operator()() { return read(*m_space, 0, 0xffU) & 1; }
	int operator()(address_space &space) { return read((m_space_tag != nullptr) ? *m_space : space, 0, 0xffU) & 1; }
};


// ======================> devcb_read8

class devcb_read8 : public devcb_read_base
{
public:
	devcb_read8(device_t &device) : devcb_read_base(device, 0xff) { }
	u8 operator()(offs_t offset = 0, u8 mask = 0xff) { return read(*m_space, offset, mask) & mask; }
	u8 operator()(address_space &space, offs_t offset = 0, u8 mask = 0xff) { return read((m_space_tag != nullptr) ? *m_space : space, offset, mask) & mask; }
};


// ======================> devcb_read16

class devcb_read16 : public devcb_read_base
{
public:
	devcb_read16(device_t &device) : devcb_read_base(device, 0xffff) { }
	u16 operator()(offs_t offset = 0, u16 mask = 0xffff) { return read(*m_space, offset, mask) & mask; }
	u16 operator()(address_space &space, offs_t offset = 0, u16 mask = 0xffff) { return read((m_space_tag != nullptr) ? *m_space : space, offset, mask) & mask; }
};


// ======================> devcb_read32

class devcb_read32 : public devcb_read_base
{
public:
	devcb_read32(device_t &device) : devcb_read_base(device, 0xffffffff) { }
	u32 operator()(offs_t offset = 0, u32 mask = 0xffffffff) { return read(*m_space, offset, mask) & mask; }
	u32 operator()(address_space &space, offs_t offset = 0, u32 mask = 0xffffffff) { return read((m_space_tag != nullptr) ? *m_space : space, offset, mask) & mask; }
};


// ======================> devcb_read64

class devcb_read64 : public devcb_read_base
{
public:
	devcb_read64(device_t &device) : devcb_read_base(device, 0xffffffffffffffffU) { }
	u64 operator()(offs_t offset = 0, u64 mask = 0xffffffffffffffffU) { return read(*m_space, offset, mask) & mask; }
	u64 operator()(address_space &space, offs_t offset = 0, u64 mask = 0xffffffffffffffffU) { return read((m_space_tag != nullptr) ? *m_space : space, offset, mask) & mask; }
};


// ======================> devcb_write_line

class devcb_write_line : public devcb_write_base
{
public:
	devcb_write_line(device_t &device) : devcb_write_base(device, 1) { }
	void operator()(int state) { write(*m_space, 0, state & 1, 0xffU); }
	void operator()(address_space &space, int state) { write((m_space_tag != nullptr) ? *m_space : space, 0, state & 1, 0xffU); }
};


// ======================> devcb_write8

class devcb_write8 : public devcb_write_base
{
public:
	devcb_write8(device_t &device) : devcb_write_base(device, 0xff) { }
	void operator()(u8 data, u8 mask = 0xff) { write(*m_space, 0, data, mask); }
	void operator()(offs_t offset, u8 data, u8 mask = 0xff) { write(*m_space, offset, data, mask); }
	void operator()(address_space &space, offs_t offset, u8 data, u8 mask = 0xff) { write((m_space_tag != nullptr) ? *m_space : space, offset, data, mask); }
};


// ======================> devcb_write16

class devcb_write16 : public devcb_write_base
{
public:
	devcb_write16(device_t &device) : devcb_write_base(device, 0xffff) { }
	void operator()(u16 data, u16 mask = 0xffff) { write(*m_space, 0, data, mask); }
	void operator()(offs_t offset, u16 data, u16 mask = 0xffff) { write(*m_space, offset, data, mask); }
	void operator()(address_space &space, offs_t offset, u16 data, u16 mask = 0xffff) { write((m_space_tag != nullptr) ? *m_space : space, offset, data, mask); }
};


// ======================> devcb_write32

class devcb_write32 : public devcb_write_base
{
public:
	devcb_write32(device_t &device) : devcb_write_base(device, 0xffffffff) { }
	void operator()(u32 data, u32 mask = 0xffffffff) { write(*m_space, 0, data, mask); }
	void operator()(offs_t offset, u32 data, u32 mask = 0xffffffff) { write(*m_space, offset, data, mask); }
	void operator()(address_space &space, offs_t offset, u32 data, u32 mask = 0xffffffff) { write((m_space_tag != nullptr) ? *m_space : space, offset, data, mask); }
};


// ======================> devcb_write64

class devcb_write64 : public devcb_write_base
{
public:
	devcb_write64(device_t &device) : devcb_write_base(device, 0xffffffffffffffffU) { }
	void operator()(u64 data, u64 mask = 0xffffffffffffffffU) { write(*m_space, 0, data, mask); }
	void operator()(offs_t offset, u64 data, u64 mask = 0xffffffffffffffffU) { write(*m_space, offset, data, mask); }
	void operator()(address_space &space, offs_t offset, u64 data, u64 mask = 0xffffffffffffffffU) { write((m_space_tag != nullptr) ? *m_space : space, offset, data, mask); }
};



//**************************************************************************
//  INLINE FUNCTIONS
//**************************************************************************

//-------------------------------------------------
//  read - generic read callback dispatch
//-------------------------------------------------

inline u64 devcb_read_base::read(address_space &space, offs_t offset, u64 mask)
{
	u64 result = (this->*m_adapter)(space, offset, mask);
	if (m_chain != nullptr)
		result |= m_chain->read(space, offset, mask);
	return result;
}


//-------------------------------------------------
//  write - generic write callback dispatch
//-------------------------------------------------

inline void devcb_write_base::write(address_space &space, offs_t offset, u64 data, u64 mask)
{
	(this->*m_adapter)(space, offset, data, mask);
	if (m_chain != nullptr)
		m_chain->write(space, offset, data, mask);
}


//-------------------------------------------------
//  wrappers for ioports, constants, and loggers
//-------------------------------------------------

#define DEVCB_NOOP devcb_base::null_desc{ }
template <typename... Params> inline devcb_base::ioport_desc DEVCB_IOPORT(Params &&... args) { return emu::detail::devcb_tag_desc_creator<devcb_base::ioport_desc>::create(std::forward<Params>(args)...); }
template <typename... Params> inline devcb_base::membank_desc DEVCB_MEMBANK(Params &&... args) { return emu::detail::devcb_tag_desc_creator<devcb_base::membank_desc>::create(std::forward<Params>(args)...); }
template <typename... Params> inline devcb_base::output_desc DEVCB_OUTPUT(Params &&... args) { return emu::detail::devcb_tag_desc_creator<devcb_base::output_desc>::create(std::forward<Params>(args)...); }
inline devcb_base::constant_desc DEVCB_CONSTANT(u64 value) { return devcb_base::constant_desc{ value }; }
inline devcb_base::logger_desc DEVCB_LOGGER(char const *string) { return devcb_base::logger_desc{ string }; }
template <typename... Params> inline devcb_base::inputline_desc DEVCB_INPUTLINE(Params &&... args) { return emu::detail::devcb_line_desc_creator<devcb_base::inputline_desc>::create(std::forward<Params>(args)...); }
template <typename... Params> inline devcb_base::assertline_desc DEVCB_ASSERTLINE(Params &&... args) { return emu::detail::devcb_line_desc_creator<devcb_base::assertline_desc>::create(std::forward<Params>(args)...); }
template <typename... Params> inline devcb_base::clearline_desc DEVCB_CLEARLINE(Params &&... args) { return emu::detail::devcb_line_desc_creator<devcb_base::clearline_desc>::create(std::forward<Params>(args)...); }
template <typename... Params> inline devcb_base::holdline_desc DEVCB_HOLDLINE(Params &&... args) { return emu::detail::devcb_line_desc_creator<devcb_base::holdline_desc>::create(std::forward<Params>(args)...); }
#define DEVCB_VCC DEVCB_CONSTANT(1)
#define DEVCB_GND DEVCB_CONSTANT(0)

#endif // MAME_EMU_DEVCB_H