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 GBAMemoryBase {
 29	BASE_BIOS = 0x00000000,
 30	BASE_WORKING_RAM = 0x02000000,
 31	BASE_WORKING_IRAM = 0x03000000,
 32	BASE_IO = 0x04000000,
 33	BASE_PALETTE_RAM = 0x05000000,
 34	BASE_VRAM = 0x06000000,
 35	BASE_OAM = 0x07000000,
 36	BASE_CART0 = 0x08000000,
 37	BASE_CART0_EX = 0x09000000,
 38	BASE_CART1 = 0x0A000000,
 39	BASE_CART1_EX = 0x0B000000,
 40	BASE_CART2 = 0x0C000000,
 41	BASE_CART2_EX = 0x0D000000,
 42	BASE_CART_SRAM = 0x0E000000
 43};
 44enum {
 45	SIZE_BIOS = 0x00004000,
 46	SIZE_WORKING_RAM = 0x00040000,
 47	SIZE_WORKING_IRAM = 0x00008000,
 48	SIZE_IO = 0x00000400,
 49	SIZE_PALETTE_RAM = 0x00000400,
 50	SIZE_VRAM = 0x00018000,
 51	SIZE_OAM = 0x00000400,
 52	SIZE_CART0 = 0x02000000,
 53	SIZE_CART1 = 0x02000000,
 54	SIZE_CART2 = 0x02000000,
 55	SIZE_CART_SRAM = 0x00008000,
 56	SIZE_CART_FLASH512 = 0x00010000,
 57	SIZE_CART_FLASH1M = 0x00020000,
 58	SIZE_CART_EEPROM = 0x00002000
 59};
 60
 61enum {
 62	OFFSET_MASK = 0x00FFFFFF
 63};
 64
 65struct GBAMemory {
 66	struct ARMMemory d;
 67	struct GBA* p;
 68
 69	int32_t* bios;
 70	int32_t* wram;
 71	int32_t* iwram;
 72	int32_t* rom;
 73};
 74
 75struct GBABoard {
 76	struct ARMBoard board;
 77};
 78
 79struct GBA {
 80	struct ARMCore cpu;
 81	struct GBABoard board;
 82	struct GBAMemory memory;
 83
 84	enum GBAError errno;
 85	const char* errstr;
 86};
 87
 88void GBAInit(struct GBA* gba);
 89void GBADeinit(struct GBA* gba);
 90
 91void GBAMemoryInit(struct GBAMemory* memory);
 92void GBAMemoryDeinit(struct GBAMemory* memory);
 93
 94void GBALoadROM(struct GBA* gba, int fd);
 95
 96int32_t GBALoad32(struct ARMMemory* memory, uint32_t address);
 97int16_t GBALoad16(struct ARMMemory* memory, uint32_t address);
 98uint16_t GBALoadU16(struct ARMMemory* memory, uint32_t address);
 99int8_t GBALoad8(struct ARMMemory* memory, uint32_t address);
100uint8_t GBALoadU8(struct ARMMemory* memory, uint32_t address);
101
102void GBAStore32(struct ARMMemory* memory, uint32_t address, int32_t value);
103void GBAStore16(struct ARMMemory* memory, uint32_t address, int16_t value);
104void GBAStore8(struct ARMMemory* memory, uint32_t address, int8_t value);
105
106#endif