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#ifndef _CPU_H
#define _CPU_H
#include <stdint.h>
#include <stdbool.h>
/* cpu traps */
enum {
TRP_UNALIGNED,
TRP_DIVBYZERO,
TRP_SYSCALL,
TRP_ILL,
};
void trap(int num);
/* program counter */
extern uint32_t PC;
/* status bits */
extern bool N, Z;
/* 32 general purpose registers */
extern uint32_t GPR[32];
/* main cpu execution function */
void execute(uint32_t IR);
#endif
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