www.pudn.com > EloGbaR1.zip > gbaemu.h

#ifndef GBAEMU_HEADER 
#define GBAEMU_HEADER 
 
typedef unsigned char  byte; 
typedef unsigned short hword; 
typedef unsigned long  word; 
 
typedef unsigned char  u8; 
typedef unsigned short u16; 
typedef unsigned long  u32; 
 
typedef signed char  s8; 
typedef signed short s16; 
typedef signed long  s32; 
 
#define USER_MODE		0x10 
#define FIQ_MODE		0x11 
#define IRQ_MODE		0x12 
#define SUPERVISOR_MODE	0x13 
#define ABORT_MODE		0x17 
#define UNDEFINED_MODE	0x1B 
#define SYSTEM_MODE		0x1F 
 
#define THUMB_BIT		0x20 
#define FIQ_BIT			0x40 
#define IRQ_BIT			0x80 
 
#define N_BIT		0x80000000 
#define Z_BIT		0x40000000 
#define C_BIT		0x20000000 
#define V_BIT		0x10000000 
#define T_BIT		0x00000020 
 
#define ZFLAG		arm->z_flag 
#define NFLAG		arm->n_flag 
#define CFLAG		arm->c_flag 
#define VFLAG		arm->v_flag 
 
#define DISPCNT		io_ram_u32[0x0] 
#define DISPSTAT	io_ram_u16[0x2] 
#define BG0CNT		io_ram_u16[0x4] 
#define BG1CNT		io_ram_u16[0x5] 
#define BG2CNT		io_ram_u16[0x6] 
#define BG3CNT		io_ram_u16[0x7] 
#define VCOUNT		io_ram_u16[0x3] 
#define DM3SAD		io_ram_u32[0x35] 
#define DM3SAD_L	io_ram_u16[0x6A] 
#define DM3SAD_H	io_ram_u16[0x6B] 
#define DM3DAD		io_ram_u32[0x36] 
#define DM3DAD_L	io_ram_u16[0x6C] 
#define DM3DAD_H	io_ram_u16[0x6D] 
#define DM3CNT		io_ram_u32[0x37] 
#define DM3CNT_L	io_ram_u16[0x6E] 
#define DM3CNT_H	io_ram_u16[0x6F] 
 
#define OPCODE			arm->op 
#define OPCODE_T		arm->op_t 
#define CPSR			arm->cpsr 
#define CONDITION_MASK	(OPCODE>>28)&0xF 
#define OPCODE_MASK		((OPCODE&0xFF00000)>>16)|((OPCODE&0xF0)>>4) 
#define OPCODE_MASK_T	(OPCODE_T>>6) 
 
#define N_FLAG_SET		(arm->cpsr&0x80000000) 
#define Z_FLAG_SET		(arm->cpsr&0x40000000) 
#define C_FLAG_SET		(arm->cpsr&0x20000000) 
#define V_FLAG_SET		(arm->cpsr&0x10000000) 
#define N_FLAG_CLEAR	(!(arm->cpsr&0x80000000)) 
#define Z_FLAG_CLEAR	(!(arm->cpsr&0x40000000)) 
#define C_FLAG_CLEAR	(!(arm->cpsr&0x20000000)) 
#define V_FLAG_CLEAR	(!(arm->cpsr&0x10000000)) 
#define N_EQU_V_FLAG	(!(N_FLAG_SET^(V_FLAG_SET<<3))) 
#define N_NEQ_V_FLAG	(N_FLAG_SET^(V_FLAG_SET<<3)) 
 
#define LSL 0 
#define LSR 1 
#define ASR 2 
#define ROR 3 
 
#define POS(i) ( (~(i)) >> 31 ) 
#define NEG(i) ( (i) >> 31 ) 
 
typedef struct BINARY_IMAGE { 
	u32 rom_size_u8; 
	u32 rom_size_u16; 
	u32 rom_size_u32; 
 
}BINARY_IMAGE; 
 
typedef struct ARM7TDMI { 
	u32 gp_reg[16]; 
	u32 cpsr; 
	u32 op; 
	u16 op_t; 
	u32 spsr [0x20]; 
	u32 state; 
 
	u32 z_flag; 
	u32 n_flag; 
	u32 c_flag; 
	u32 v_flag; 
 
}ARM7TDMI; 
 
BINARY_IMAGE bin; 
ARM7TDMI *arm; 
 
u8  *wram_int_u8;	u16 *wram_int_u16;	u32 *wram_int_u32; 
u8  *wram_ext_u8;	u16 *wram_ext_u16;	u32 *wram_ext_u32; 
u8  *pal_ram_u8;	u16 *pal_ram_u16;	u32 *pal_ram_u32;  
u8  *vram_u8;		u16 *vram_u16;		u32 *vram_u32; 
u8  *oam_u8;		u16 *oam_u16;		u32 *oam_u32; 
u8  *io_ram_u8;		u16 *io_ram_u16;	u32 *io_ram_u32; 
u8  *zero_page_u8;  u16 *zero_page_u16; u32 *zero_page_u32; 
 
u32 *screen; 
 
char *debug_string; 
char *debug_str; 
char *message_string; 
char *operand_string; 
 
u32 new_message; 
u32 blit_res_x; 
u32 blit_res_y; 
 
u32 (*exec)(void); 
 
u32  (*code_execution   [0xF])(void); 
u32  (*opcode_handles   [0x1000])(void); 
u32  (*opcode_handles_t [0x400])(void); 
 
void (*io_write_handles	[0x3FF])(void); 
void (*debug_handles [0x1000])(u32 op, u32 adress, char *dest); 
void (*render_mode [0x8])(void); 
 
char *opcode_strings	[0x1000]; 
char *opcode_strings_t  [0x400]; 
 
static char *condition_strings[] = {"eq", "ne", "cs", "cc", "mi", "pl", "vs", "vc", "hi", 
									"ls", "ge", "lt", "gt", "le", "", ""}; 
 
static char *register_strings[]  = {"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", 
						 			"r9", "r10", "r11", "r12", "sp", "lr", "pc"};  
 
static char *shift_strings[]     = {"LSL", "LSR", "ASR", "ROR"}; 
 
char *cpu_mode_strings [0x20];   
 
u8  *rom_pages_u8  [0x200]; 
u16 *rom_pages_u16 [0x200]; 
u32 *rom_pages_u32 [0x200]; 
 
char *dummy_mem;  
 
u16 *virtual_screen; 
u32 translated_palette [0x200]; 
u32 sprite_sizes_x [0xF]; 
u32 sprite_sizes_y [0xF]; 
 
__declspec(dllexport) int init_gbaemu (void); 
__declspec(dllexport) void reset_gbaemu (word pc, char *debug_destination, char *operand_destination); 
__declspec(dllexport) int load_bin (char *filename); 
__declspec(dllexport) void exec_step (); 
__declspec(dllexport) void run_breakpoint (u32 breakpoint); 
__declspec(dllexport) void run_frame (void); 
__declspec(dllexport) void clean_up (void); 
 
void setup_tables (void); 
u8   read_byte (u32 adress); 
u16  read_hword (u32 adress); 
u32  read_word (u32 adress); 
u16  read_aligned_hword (u32 adress); 
u32  read_aligned_word (u32 adress); 
void write_byte (word adress, byte data); 
void write_hword (u32 adress, u16 data); 
void write_word (u32 adress, u32 data); 
 
void exec_dma3 (void); 
 
void render_mode0_frame (void); 
void render_mode1_frame (void); 
void render_mode2_frame (void); 
void render_mode3_frame (void); 
void render_mode4_frame (void); 
void render_mode5_frame (void); 
void draw_sprites (u16 priority); 
void draw_sprite (u16 a0, u16 a1, u16 a2); 
 
__inline void fill_instruction_pipe (void)   
{ 
	OPCODE = read_aligned_word (arm->gp_reg [15]);	 
	arm->gp_reg [15] += 8;									 			 
}    
   
__inline void advance_instruction_pipe (void) 
{ 
	OPCODE = read_aligned_word (arm->gp_reg [15] - 4);  
	arm->gp_reg [15] += 4;  
} 
 
__inline void tfill_instruction_pipe (void) 
{ 
	OPCODE_T = read_hword (arm->gp_reg [15]); 
	arm->gp_reg [15] += 4; 
} 
 
__inline void tadvance_instruction_pipe (void) 
{ 
	OPCODE_T = read_hword (arm->gp_reg [15] - 2);  
	arm->gp_reg [15] += 2;  
} 
 
#endif