// Function: executeStage
// Description: E.icode is used as n index into the
// funtionPtr[] array.
// Params: none
// Returns: nothing
// Modifies: e_valE and e_CND
void executeStage(forwardType * forward, statusType status)
{
//bools
bool m_bubble = getmBubble(status);
//decide if m_stat or W_stat depending on code
unsigned int valE = functionPtr[E.icode]();
int e_CND = computeCND();
unsigned int e_dstE = getEVdstE(e_CND);
//forwarding
forward->e_dstE = E.dstE;
forward->e_valE = valE;
if(m_bubble)
{
updateMregister(E.stat, NOP, FNONE, FNONE, FNONE, RNONE, RNONE);
}
/*
updateMregister(E.stat, E.icode, 0, valE, E.valA, e_dstE, E.dstM);
*/
else
{
updateMregister(E.stat, E.icode, e_CND, valE, E.valA, e_dstE, E.dstM);
}
}
void executeStage(pipelineForward* forward, statusType stat, control* con)
{
// DR NORRIS SAID THIS IS OK
unsigned int valE = executeAlu(stat);
unsigned int Cnd = getCnd();
unsigned int dstE = getDstE(Cnd);
forward->e_valE = valE;
forward->e_dstE = dstE;
con->E_icode = E.icode;
con->E_dstM = E.dstM;
con->e_Cnd = Cnd;
// determines if the memory stage should be bubbled
bool M_bubble =
(stat.m_stat == SADR || stat.m_stat == SINS || stat.m_stat == SHLT) ||
(stat.W_stat == SADR || stat.W_stat == SINS || stat.W_stat == SHLT);
if(M_bubble)
{
clearMregister();
}
else
{
updateMregister(E.stat, E.icode, Cnd, valE, E.valA, dstE, E.dstM);
}
}
void executeStage(pipelineForward* forward, statusType stat)
{
// DR NORRIS SAID THIS IS OK
unsigned int valE = executeAlu(stat);
unsigned int Cnd = getCnd();
unsigned int dstE = getDstE(Cnd);
forward->e_valE = valE;
forward->e_dstE = dstE;
bool M_bubble =
(stat.m_stat == SADR || stat.m_stat == SINS || stat.m_stat == SHLT) ||
(stat.W_stat == SADR || stat.W_stat == SINS || stat.W_stat == SHLT);
if(M_bubble)
{
clearMregister();
}
else
{
updateMregister(E.stat, E.icode, Cnd, valE, E.valA, dstE, E.dstM);
}
}
