void run( void ) {
bool running = true;
while ( running ){
showRegs();
int instr = fetch();
decode( instr );
eval( &running );
}
showRegs();
}
/**
* Run program from memory.
* @param state virtual machine state registers.
* @param mem program memory space.
* @param memsize size of program memory space.
*/
void vm_run(struct vm_state * state, uint32_t * mem)
{
uint32_t instr = 0;
int error_code;
int rstate = 0;
do {
switch (rstate) {
case 0: /* Fetch */
#if VM_DEBUG == 1
showRegs(state);
#endif
error_code = fetch(&instr, state, mem);
break;
case 1: /* Decode */
error_code = decode(state, instr);
break;
case 2: /* Evaluate */
error_code = eval(state, mem);
break;
default:
error_code = 0;
break;
}
/* Halt on runtime error */
if (error_code != 0) {
print_error_msg(error_code);
state->running = 0;
}
if (++rstate > 2)
rstate = 0;
} while (state->running);
#if VM_DEBUG == 1
showRegs(state);
#endif
}
void run(tProgram * p)
{
p->running = 1;
p->pc = 0;
while( p->running )
{
//showRegs();
eval(p);
fetch(p);
}
showRegs();
}
