#define SIM_SINGLE_STEP 1 #define SIM_DONE 2 #define SIM_BREAKPOINT 3 #define SIM_INTERRUPT 4 #define SIM_BAD_INST 5 #define SIM_DIV_ZERO 6 #define SIM_BAD_SYSCALL 7 #define SIM_BAD_ALIGN 8 #define SIM_BAD_ADDR 9