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// Simulator for the RISC-V[ECTOR] mini-ISA
// Copyright (C) 2025 Siddarth Suresh
// Copyright (C) 2025 bdunahu
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
#include "mm.h"
#include "accessor.h"
#include "instrDTO.h"
#include "response.h"
#include "stage.h"
MM::MM(Stage *stage) : Stage(stage) { this->id = MEM; }
void MM::advance_helper()
{
signed int data;
int i;
switch (this->curr_instr->get_mnemonic()) {
case LOAD:
i = this->storage->read_word(this, this->curr_instr->get_s1(), data);
this->status = i ? OK : STALLED;
if (this->status == OK) {
this->curr_instr->set_s1(data);
} else
this->status = STALLED;
break;
case PUSH:
case STORE:
i = this->storage->write_word(
this, this->curr_instr->get_s2(), this->curr_instr->get_s1());
this->status = i ? OK : STALLED;
if (this->status != OK) {
this->status = STALLED;
}
break;
case POP:
i = this->storage->read_word(this, this->curr_instr->get_s3(), data);
this->status = i ? OK : STALLED;
if (this->status == OK) {
this->curr_instr->set_s3(data);
} else
this->status = STALLED;
break;
default:
this->status = OK;
}
}
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