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#include "stage.h"
#include "utils.h"
#include <array>
#include <set>
static Logger *global_log = Logger::getInstance();
Stage::Stage(Stage *next)
{
this->next = next;
this->curr_instr = nullptr;
this->status = OK;
}
Stage::~Stage() { delete this->next; };
std::array<int, GPR_NUM> Stage::gprs;
std::array<int, V_NUM> Stage::vrs;
std::set<unsigned int> Stage::checked_out;
unsigned int Stage::pc;
Storage *Stage::storage;
bool Stage::is_pipelined;
int Stage::clock_cycle;
Response Stage::check_out(unsigned int &v)
{
Response r;
if (this->is_checked_out(v))
r = BLOCKED;
else {
r = OK;
v = this->check_out_register(v);
}
return r;
}
bool Stage::is_checked_out(unsigned int r)
{
return this->checked_out.find(r) != this->checked_out.end();
}
signed int Stage::check_out_register(unsigned int v)
{
signed int r;
this->checked_out.insert(v);
r = this->dereference_register(v);
return r;
}
signed int Stage::dereference_register(unsigned int v)
{
signed int r;
if (v >= GPR_NUM + V_NUM) {
global_log->log(
ERROR, string_format(
"instruction tried to access register %d, which does "
"not exist",
v));
exit(EXIT_FAILURE);
}
r = (v >= GPR_NUM) ? this->vrs[v % GPR_NUM] : this->gprs[v];
return r;
}
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