1#ifndef GBA_H
  2#define GBA_H
  3
  4#include "common.h"
  5
  6#include "arm.h"
  7#include "debugger/debugger.h"
  8
  9#include "gba-memory.h"
 10#include "gba-video.h"
 11#include "gba-audio.h"
 12#include "gba-sio.h"
 13
 14extern const uint32_t GBA_ARM7TDMI_FREQUENCY;
 15
 16enum GBAIRQ {
 17	IRQ_VBLANK = 0x0,
 18	IRQ_HBLANK = 0x1,
 19	IRQ_VCOUNTER = 0x2,
 20	IRQ_TIMER0 = 0x3,
 21	IRQ_TIMER1 = 0x4,
 22	IRQ_TIMER2 = 0x5,
 23	IRQ_TIMER3 = 0x6,
 24	IRQ_SIO = 0x7,
 25	IRQ_DMA0 = 0x8,
 26	IRQ_DMA1 = 0x9,
 27	IRQ_DMA2 = 0xA,
 28	IRQ_DMA3 = 0xB,
 29	IRQ_KEYPAD = 0xC,
 30	IRQ_GAMEPAK = 0xD
 31};
 32
 33enum GBAError {
 34	GBA_NO_ERROR = 0,
 35	GBA_OUT_OF_MEMORY = -1
 36};
 37
 38enum GBALogLevel {
 39	GBA_LOG_STUB = 0x01,
 40	GBA_LOG_DEBUG = 0x02,
 41	GBA_LOG_INFO = 0x04,
 42	GBA_LOG_WARN = 0x08,
 43	GBA_LOG_ERROR = 0x10,
 44	GBA_LOG_FATAL = 0x20,
 45
 46	GBA_LOG_GAME_ERROR = 0x100
 47};
 48
 49enum GBAKey {
 50	GBA_KEY_A = 0,
 51	GBA_KEY_B = 1,
 52	GBA_KEY_SELECT = 2,
 53	GBA_KEY_START = 3,
 54	GBA_KEY_RIGHT = 4,
 55	GBA_KEY_LEFT = 5,
 56	GBA_KEY_UP = 6,
 57	GBA_KEY_DOWN = 7,
 58	GBA_KEY_R = 8,
 59	GBA_KEY_L = 9,
 60	GBA_KEY_NONE = -1
 61};
 62
 63struct GBARotationSource;
 64struct GBA;
 65typedef void (*GBALogHandler)(struct GBA*, enum GBALogLevel, const char* format, va_list args);
 66
 67struct GBABoard {
 68	struct ARMBoard d;
 69	struct GBA* p;
 70};
 71
 72struct GBA {
 73	struct ARMCore cpu;
 74	struct GBABoard board;
 75	struct GBAMemory memory;
 76	struct GBAVideo video;
 77	struct GBAAudio audio;
 78	struct GBASIO sio;
 79
 80	struct GBASync* sync;
 81
 82	struct ARMDebugger* debugger;
 83
 84	int timersEnabled;
 85	struct GBATimer {
 86		uint16_t reload;
 87		uint16_t oldReload;
 88		int32_t lastEvent;
 89		int32_t nextEvent;
 90		int32_t overflowInterval;
 91		unsigned prescaleBits : 4;
 92		unsigned countUp : 1;
 93		unsigned doIrq : 1;
 94		unsigned enable : 1;
 95	} timers[4];
 96
 97	int springIRQ;
 98	uint32_t biosChecksum;
 99	int* keySource;
100	struct GBARotationSource* rotationSource;
101	struct GBARumble* rumble;
102
103	const char* activeFile;
104	const char* savefile;
105
106	int logLevel;
107	GBALogHandler logHandler;
108};
109
110struct GBACartridge {
111	uint32_t entry;
112	uint8_t logo[156];
113	char title[12];
114	uint32_t id;
115	uint16_t maker;
116	uint8_t type;
117	uint8_t unit;
118	uint8_t device;
119	uint8_t reserved[7];
120	uint8_t version;
121	uint8_t checksum;
122	// And ROM data...
123};
124
125void GBAInit(struct GBA* gba);
126void GBADeinit(struct GBA* gba);
127
128void GBAMemoryInit(struct GBAMemory* memory);
129void GBAMemoryDeinit(struct GBAMemory* memory);
130
131void GBABoardInit(struct GBABoard* board);
132void GBABoardReset(struct ARMBoard* board);
133
134void GBATimerUpdateRegister(struct GBA* gba, int timer);
135void GBATimerWriteTMCNT_LO(struct GBA* gba, int timer, uint16_t value);
136void GBATimerWriteTMCNT_HI(struct GBA* gba, int timer, uint16_t value);
137
138void GBAWriteIE(struct GBA* gba, uint16_t value);
139void GBAWriteIME(struct GBA* gba, uint16_t value);
140void GBARaiseIRQ(struct GBA* gba, enum GBAIRQ irq);
141void GBATestIRQ(struct ARMBoard* board);
142int GBAWaitForIRQ(struct GBA* gba);
143int GBAHalt(struct GBA* gba);
144
145void GBAAttachDebugger(struct GBA* gba, struct ARMDebugger* debugger);
146void GBADetachDebugger(struct GBA* gba);
147
148void GBALoadROM(struct GBA* gba, int fd, const char* fname);
149void GBALoadBIOS(struct GBA* gba, int fd);
150
151__attribute__((format (printf, 3, 4)))
152void GBALog(struct GBA* gba, enum GBALogLevel level, const char* format, ...);
153
154__attribute__((format (printf, 3, 4)))
155void GBADebuggerLogShim(struct ARMDebugger* debugger, enum DebuggerLogLevel level, const char* format, ...);
156
157#endif