1#ifndef GBA_MEMORY_H
 2#define GBA_MEMORY_H
 3
 4#include "arm.h"
 5
 6enum GBAError {
 7	GBA_NO_ERROR = 0,
 8	GBA_OUT_OF_MEMORY = -1
 9};
10
11enum GBAMemoryRegion {
12	REGION_BIOS = 0x0,
13	REGION_WORKING_RAM = 0x2,
14	REGION_WORKING_IRAM = 0x3,
15	REGION_IO = 0x4,
16	REGION_PALETTE_RAM = 0x5,
17	REGION_VRAM = 0x6,
18	REGION_OAM = 0x7,
19	REGION_CART0 = 0x8,
20	REGION_CART0_EX = 0x9,
21	REGION_CART1 = 0xA,
22	REGION_CART1_EX = 0xB,
23	REGION_CART2 = 0xC,
24	REGION_CART2_EX = 0xD,
25	REGION_CART_SRAM = 0xE
26};
27
28enum {
29	SIZE_BIOS = 0x00004000,
30	SIZE_WORKING_RAM = 0x00040000,
31	SIZE_WORKING_IRAM = 0x00008000,
32	SIZE_IO = 0x00000400,
33	SIZE_PALETTE_RAM = 0x00000400,
34	SIZE_VRAM = 0x00018000,
35	SIZE_OAM = 0x00000400,
36	SIZE_CART0 = 0x02000000,
37	SIZE_CART1 = 0x02000000,
38	SIZE_CART2 = 0x02000000,
39	SIZE_CART_SRAM = 0x00008000,
40	SIZE_CART_FLASH512 = 0x00010000,
41	SIZE_CART_FLASH1M = 0x00020000,
42	SIZE_CART_EEPROM = 0x00002000
43};
44
45enum {
46	OFFSET_MASK = 0x00FFFFFF
47};
48
49struct GBAMemory {
50	struct ARMMemory d;
51	struct GBA* p;
52
53	int32_t* bios;
54	int32_t* wram;
55	int32_t* iwram;
56	int32_t* rom;
57};
58
59struct GBABoard {
60	struct ARMBoard board;
61};
62
63struct GBA {
64	struct ARMCore cpu;
65	struct GBABoard board;
66	struct GBAMemory memory;
67
68	enum GBAError errno;
69	const char* errstr;
70};
71
72void GBAInit(struct GBA* gba);
73void GBADeinit(struct GBA* gba);
74
75void GBAMemoryInit(struct GBAMemory* memory);
76void GBAMemoryDeinit(struct GBAMemory* memory);
77
78int32_t GBALoad32(struct ARMMemory* memory, uint32_t address);
79int16_t GBALoad16(struct ARMMemory* memory, uint32_t address);
80uint16_t GBALoadU16(struct ARMMemory* memory, uint32_t address);
81int8_t GBALoad8(struct ARMMemory* memory, uint32_t address);
82uint8_t GBALoadU8(struct ARMMemory* memory, uint32_t address);
83
84void GBAStore32(struct ARMMemory* memory, uint32_t address, int32_t value);
85void GBAStore16(struct ARMMemory* memory, uint32_t address, int16_t value);
86void GBAStore8(struct ARMMemory* memory, uint32_t address, int8_t value);
87
88#endif