#define DEBUG
|
#define DEBUG
|
|
|
/* These define the size of main memory for the simulator.
|
/* 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
|
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.
|
small makes the simulator run much faster and consume less memory.
|
|
|
The linker knows about the limited size of the simulator's main 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
|
on the H8/300H (via the h8300h.sc linker script). So if you change
|
H8300H_MSIZE, be sure to fix the linker script too.
|
H8300H_MSIZE, be sure to fix the linker script too.
|
|
|
Also note that there's a separate "eightbit" area aside from main
|
Also note that there's a separate "eightbit" area aside from main
|
memory. For simplicity, the simulator assumes any data memory reference
|
memory. For simplicity, the simulator assumes any data memory reference
|
outside of main memory refers to the eightbit area (in theory, this
|
outside of main memory refers to the eightbit area (in theory, this
|
can only happen when simulating H8/300H programs). We make no attempt
|
can only happen when simulating H8/300H programs). We make no attempt
|
to catch overlapping addresses, wrapped addresses, etc etc. */
|
to catch overlapping addresses, wrapped addresses, etc etc. */
|
#define H8300_MSIZE (1 << 16)
|
#define H8300_MSIZE (1 << 16)
|
|
|
/* avolkov:
|
/* avolkov:
|
Next 2 macros are ugly for any workstation, but while they're work.
|
Next 2 macros are ugly for any workstation, but while they're work.
|
Memory size MUST be configurable. */
|
Memory size MUST be configurable. */
|
#define H8300H_MSIZE (1 << 18)
|
#define H8300H_MSIZE (1 << 18)
|
#define H8300S_MSIZE (1 << 24)
|
#define H8300S_MSIZE (1 << 24)
|
|
|
#define CSIZE 1000
|
#define CSIZE 1000
|
|
|
/* Local register names */
|
/* Local register names */
|
typedef enum
|
typedef enum
|
{
|
{
|
R0, R1, R2, R3, R4, R5, R6, R7,
|
R0, R1, R2, R3, R4, R5, R6, R7,
|
R_ZERO,
|
R_ZERO,
|
R_PC,
|
R_PC,
|
R_CCR,
|
R_CCR,
|
R_EXR,
|
R_EXR,
|
R_HARD_0,
|
R_HARD_0,
|
R_LAST,
|
R_LAST,
|
} reg_type;
|
} reg_type;
|
|
|
|
|
/* Structure used to describe addressing */
|
/* Structure used to describe addressing */
|
|
|
typedef struct
|
typedef struct
|
{
|
{
|
int type;
|
int type;
|
int reg;
|
int reg;
|
int literal;
|
int literal;
|
} ea_type;
|
} ea_type;
|
|
|
|
|
|
|
typedef struct
|
typedef struct
|
{
|
{
|
ea_type src;
|
ea_type src;
|
ea_type dst;
|
ea_type dst;
|
int opcode;
|
int opcode;
|
int next_pc;
|
int next_pc;
|
int oldpc;
|
int oldpc;
|
int cycles;
|
int cycles;
|
#ifdef DEBUG
|
#ifdef DEBUG
|
struct h8_opcode *op;
|
struct h8_opcode *op;
|
#endif
|
#endif
|
}
|
}
|
decoded_inst;
|
decoded_inst;
|
|
|
enum h8300_sim_state {
|
enum h8300_sim_state {
|
SIM_STATE_RUNNING, SIM_STATE_EXITED, SIM_STATE_SIGNALLED, SIM_STATE_STOPPED
|
SIM_STATE_RUNNING, SIM_STATE_EXITED, SIM_STATE_SIGNALLED, SIM_STATE_STOPPED
|
};
|
};
|
|
|
/* For Command Line. */
|
/* For Command Line. */
|
char **ptr_command_line; /* Pointer to Command Line Arguments. */
|
char **ptr_command_line; /* Pointer to Command Line Arguments. */
|
|
|
typedef struct
|
typedef struct
|
{
|
{
|
enum h8300_sim_state state;
|
enum h8300_sim_state state;
|
int exception;
|
int exception;
|
unsigned int regs[9];
|
unsigned int regs[9];
|
int pc;
|
int pc;
|
int ccr;
|
int ccr;
|
int exr;
|
int exr;
|
|
|
unsigned char *memory;
|
unsigned char *memory;
|
unsigned char *eightbit;
|
unsigned char *eightbit;
|
unsigned short *cache_idx;
|
unsigned short *cache_idx;
|
int cache_top;
|
int cache_top;
|
int maximum;
|
int maximum;
|
int csize;
|
int csize;
|
int mask;
|
int mask;
|
|
|
decoded_inst *cache;
|
decoded_inst *cache;
|
int cycles;
|
int cycles;
|
int insts;
|
int insts;
|
int ticks;
|
int ticks;
|
int compiles;
|
int compiles;
|
#ifdef ADEBUG
|
#ifdef ADEBUG
|
int stats[O_LAST];
|
int stats[O_LAST];
|
#endif
|
#endif
|
}
|
}
|
cpu_state_type;
|
cpu_state_type;
|
|
|
