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#define DEBUG
/* These define the size of main memory for the simulator.
Note the size of main memory for the H8/300H is only 256k. Keeping it
small makes the simulator run much faster and consume less memory.
The linker knows about the limited size of the simulator's main memory
on the H8/300H (via the h8300h.sc linker script). So if you change
H8300H_MSIZE, be sure to fix the linker script too.
Also note that there's a separate "eightbit" area aside from main
memory. For simplicity, the simulator assumes any data memory reference
outside of main memory refers to the eightbit area (in theory, this
can only happen when simulating H8/300H programs). We make no attempt
to catch overlapping addresses, wrapped addresses, etc etc. */
#define H8300_MSIZE (1<<16)
#define H8300H_MSIZE (1<<18)
#define CSIZE 1000
/* Local register names */
typedef enum
{
R0, R1, R2, R3, R4, R5, R6, R7,
R_ZERO,
R_PC,
R_CCR,
R_HARD_0,
R_LAST,
} reg_type;
/* Structure used to describe addressing */
typedef struct
{
int type;
int reg;
int literal;
} ea_type;
typedef struct
{
ea_type src;
ea_type dst;
int opcode;
int next_pc;
int oldpc;
int cycles;
#ifdef DEBUG
struct h8_opcode *op;
#endif
}
decoded_inst;
enum h8300_sim_state {
SIM_STATE_RUNNING, SIM_STATE_EXITED, SIM_STATE_SIGNALLED, SIM_STATE_STOPPED
};
typedef struct
{
enum h8300_sim_state state;
int exception;
unsigned int regs[9];
int pc;
int ccr;
unsigned char *memory;
unsigned char *eightbit;
unsigned short *cache_idx;
int cache_top;
int maximum;
int csize;
int mask;
decoded_inst *cache;
int cycles;
int insts;
int ticks;
int compiles;
#ifdef ADEBUG
int stats[O_LAST];
#endif
}
cpu_state_type;
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