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/* gameplaySP
*
* Copyright (C) 2006 Exophase <exophase@gmail.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef CPU_H
#define CPU_H
// System mode and user mode are represented as the same here
typedef enum
{
MODE_USER,
MODE_IRQ,
MODE_FIQ,
MODE_SUPERVISOR,
MODE_ABORT,
MODE_UNDEFINED,
MODE_INVALID
} cpu_mode_type;
typedef enum
{
CPU_ALERT_NONE,
CPU_ALERT_HALT,
CPU_ALERT_SMC,
CPU_ALERT_IRQ
} cpu_alert_type;
typedef enum
{
CPU_ACTIVE,
CPU_HALT,
CPU_STOP
} cpu_halt_type;
typedef enum
{
IRQ_NONE = 0x0000,
IRQ_VBLANK = 0x0001,
IRQ_HBLANK = 0x0002,
IRQ_VCOUNT = 0x0004,
IRQ_TIMER0 = 0x0008,
IRQ_TIMER1 = 0x0010,
IRQ_TIMER2 = 0x0020,
IRQ_TIMER3 = 0x0040,
IRQ_SERIAL = 0x0080,
IRQ_DMA0 = 0x0100,
IRQ_DMA1 = 0x0200,
IRQ_DMA2 = 0x0400,
IRQ_DMA3 = 0x0800,
IRQ_KEYPAD = 0x1000,
IRQ_GAMEPAK = 0x2000,
} irq_type;
typedef enum
{
REG_SP = 13,
REG_LR = 14,
REG_PC = 15,
REG_N_FLAG = 16,
REG_Z_FLAG = 17,
REG_C_FLAG = 18,
REG_V_FLAG = 19,
REG_CPSR = 20,
REG_SAVE = 21,
REG_SAVE2 = 22,
REG_SAVE3 = 23,
CPU_MODE = 29,
CPU_HALT_STATE = 30,
CHANGED_PC_STATUS = 31
} ext_reg_numbers;
typedef enum
{
STEP,
PC_BREAKPOINT,
VCOUNT_BREAKPOINT,
Z_BREAKPOINT,
COUNTDOWN_BREAKPOINT,
COUNTDOWN_BREAKPOINT_B,
COUNTDOWN_BREAKPOINT_C,
STEP_RUN,
RUN
} debug_state;
typedef enum
{
TRANSLATION_REGION_RAM,
TRANSLATION_REGION_ROM,
TRANSLATION_REGION_BIOS
} translation_region_type;
extern debug_state current_debug_state;
extern u32 instruction_count;
extern u32 last_instruction;
u32 function_cc step_debug(u32 pc, u32 cycles);
u32 execute_arm(u32 cycles);
void raise_interrupt(irq_type irq_raised);
u32 function_cc execute_load_u8(u32 address);
u32 function_cc execute_load_u16(u32 address);
u32 function_cc execute_load_u32(u32 address);
u32 function_cc execute_load_s8(u32 address);
u32 function_cc execute_load_s16(u32 address);
void function_cc execute_store_u8(u32 address, u32 source);
void function_cc execute_store_u16(u32 address, u32 source);
void function_cc execute_store_u32(u32 address, u32 source);
u32 function_cc execute_arm_translate(u32 cycles);
void init_translater();
void cpu_write_mem_savestate(file_tag_type savestate_file);
void cpu_read_savestate(file_tag_type savestate_file);
u8 function_cc *block_lookup_address_arm(u32 pc);
u8 function_cc *block_lookup_address_thumb(u32 pc);
s32 translate_block_arm(u32 pc, translation_region_type translation_region,
u32 smc_enable);
s32 translate_block_thumb(u32 pc, translation_region_type translation_region,
u32 smc_enable);
#ifdef GP2X_BUILD
#define ROM_TRANSLATION_CACHE_SIZE (1024 * 512 * 4 * 5)
#define RAM_TRANSLATION_CACHE_SIZE (1024 * 384 * 2)
#define BIOS_TRANSLATION_CACHE_SIZE (1024 * 128 * 2)
#define TRANSLATION_CACHE_LIMIT_THRESHOLD (1024 * 32)
#else
#define ROM_TRANSLATION_CACHE_SIZE (1024 * 512 * 4)
#define RAM_TRANSLATION_CACHE_SIZE (1024 * 384)
#define BIOS_TRANSLATION_CACHE_SIZE (1024 * 128)
#define TRANSLATION_CACHE_LIMIT_THRESHOLD (1024)
#endif
extern u8 rom_translation_cache[ROM_TRANSLATION_CACHE_SIZE];
extern u8 ram_translation_cache[RAM_TRANSLATION_CACHE_SIZE];
extern u8 bios_translation_cache[BIOS_TRANSLATION_CACHE_SIZE];
extern u8 *rom_translation_ptr;
extern u8 *ram_translation_ptr;
extern u8 *bios_translation_ptr;
#define MAX_TRANSLATION_GATES 8
extern u32 idle_loop_target_pc;
extern u32 force_pc_update_target;
extern u32 iwram_stack_optimize;
extern u32 allow_smc_ram_u8;
extern u32 allow_smc_ram_u16;
extern u32 allow_smc_ram_u32;
extern u32 direct_map_vram;
extern u32 translation_gate_targets;
extern u32 translation_gate_target_pc[MAX_TRANSLATION_GATES];
extern u32 in_interrupt;
#define ROM_BRANCH_HASH_SIZE (1024 * 64)
/* EDIT: Shouldn't this be extern ?! */
extern u32 *rom_branch_hash[ROM_BRANCH_HASH_SIZE];
void flush_translation_cache_rom();
void flush_translation_cache_ram();
void flush_translation_cache_bios();
void dump_translation_cache();
extern u32 reg_mode[7][7];
extern u32 spsr[6];
extern u32 cpu_modes[32];
extern const u32 psr_masks[16];
extern u32 breakpoint_value;
extern u32 memory_region_access_read_u8[16];
extern u32 memory_region_access_read_s8[16];
extern u32 memory_region_access_read_u16[16];
extern u32 memory_region_access_read_s16[16];
extern u32 memory_region_access_read_u32[16];
extern u32 memory_region_access_write_u8[16];
extern u32 memory_region_access_write_u16[16];
extern u32 memory_region_access_write_u32[16];
extern u32 memory_reads_u8;
extern u32 memory_reads_s8;
extern u32 memory_reads_u16;
extern u32 memory_reads_s16;
extern u32 memory_reads_u32;
extern u32 memory_writes_u8;
extern u32 memory_writes_u16;
extern u32 memory_writes_u32;
void init_cpu();
void move_reg();
#endif
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