#define DCPU16_RAM 0x10000
#define DCPU16_INTERRUPT_QUEUE_SIZE 256
+extern const char * const dcpu16_reg_names[];
+enum dcpu16_register_indexes {
+ DCPU16_REG_A = 0,
+ DCPU16_REG_B,
+ DCPU16_REG_C,
+ DCPU16_REG_X,
+ DCPU16_REG_Y,
+ DCPU16_REG_Z,
+ DCPU16_REG_I,
+ DCPU16_REG_J,
+ DCPU16_REG_PC,
+ DCPU16_REG_SP,
+ DCPU16_REG_EX,
+ DCPU16_REG_IA,
+ DCPU16_REG__NUM
+};
+
/* a self-contained dcpu16 core */
struct dcpu16 {
+ void (*warn_cb_)(char *fmt, ...);
+ void (*trace_cb_)(char *fmt, ...);
+
struct dcpu16_acct_cb *cb_table_; /* list of callbacks to invoke for certain events */
size_t cb_table_entries_; /* callback list maintenance */
size_t cb_table_allocated_; /* callback list maintenance */
size_t interrupts_tail_; /* interrupt queue maintenance */
unsigned long long cycle; /* number of cycles this core has executed */
- DCPU16_WORD reg[8]; /* system registers, a b c x y z i j */
- DCPU16_WORD pc; /* program counter */
- DCPU16_WORD sp; /* stack pointer */
- DCPU16_WORD ex; /* overflow */
- DCPU16_WORD ia; /* interrupt address */
+ DCPU16_WORD reg[DCPU16_REG__NUM]; /* system registers, a b c x y z i j */
DCPU16_WORD ram[DCPU16_RAM]; /* memory */
};
dcpu16_acct_event mask;
};
+typedef void (dcpu16_hw_signal_t)(struct dcpu16 *, void *);
/* these are used to define hardware attached to the system */
struct dcpu16_hw {
+ struct dcpu16 *vm; /* which system do I belong to */
char *name_;
+
DCPU16_WORD id_l;
DCPU16_WORD id_h;
DCPU16_WORD ver;
DCPU16_WORD mfg_l;
DCPU16_WORD mfg_h;
- void (*int_fn)(struct dcpu16 *, void *);
+
+ dcpu16_hw_signal_t *hwi;
+ dcpu16_hw_signal_t *cycle;
+ dcpu16_hw_signal_t *reset;
void *data;
};
/* release a core */
void dcpu16_delete(struct dcpu16 **);
+int dcpu16_interrupt(struct dcpu16 *, DCPU16_WORD);
+
/* register callbacks to handle warning and debug messages, default is writing to stderr, may be set to null */
void dcpu16_warn_cb_set(void (*)(char *, ...));
void dcpu16_trace_cb_set(void (*)(char *, ...));