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#include "cacheview.h"
//////////////////////
#define ROW_HEIGHT 14
#define VD_WIDTH 10
#define DATA_WIDTH 72
#define PENW 1
//////////////////////
CacheViewBlock::CacheViewBlock(const machine::Cache *cache, unsigned block) : QGraphicsObject(nullptr) {
this->block = block;
rows = cache->config().sets();
columns = cache->config().blocks();
QFont font;
font.setPointSize(7);
validity = new QGraphicsSimpleTextItem*[rows];
if (cache->config().write_policy() == machine::MachineConfigCache::WP_BACK)
dirty = new QGraphicsSimpleTextItem*[rows];
else
dirty = nullptr;
tag = new QGraphicsSimpleTextItem*[rows];
data = new QGraphicsSimpleTextItem**[rows];
int row_y = 1;
for (unsigned i = 0; i < rows; i++) {
int row_x = 2;
validity[i] = new QGraphicsSimpleTextItem("0", this);
validity[i]->setPos(row_x, row_y);
validity[i]->setFont(font);
row_x += VD_WIDTH;
if (dirty) {
dirty[i] = new QGraphicsSimpleTextItem(this);
dirty[i]->setPos(row_x, row_y);
dirty[i]->setFont(font);
row_x += VD_WIDTH;
}
tag[i] = new QGraphicsSimpleTextItem(this);
tag[i]->setPos(row_x, row_y);
tag[i]->setFont(font);
row_x += DATA_WIDTH;
data[i] = new QGraphicsSimpleTextItem*[columns];
for (unsigned y = 0; y < columns; y++) {
data[i][y] = new QGraphicsSimpleTextItem(this);
data[i][y]->setPos(row_x, row_y);
data[i][y]->setFont(font);
row_x += DATA_WIDTH;
}
row_y += ROW_HEIGHT;
}
connect(cache, SIGNAL(cache_update(uint,uint,bool,bool,std::uint32_t,const std::uint32_t*)), this, SLOT(cache_update(uint,uint,bool,bool,std::uint32_t,const std::uint32_t*)));
}
CacheViewBlock::~CacheViewBlock() {
delete validity;
delete dirty;
delete tag;
for (unsigned y = 0; y < rows; y++)
delete data[y];
delete data;
}
QRectF CacheViewBlock::boundingRect() const {
return QRectF(
-PENW / 2,
-PENW / 2,
VD_WIDTH + (dirty ? VD_WIDTH : 0) + DATA_WIDTH*(columns+1) + PENW,
ROW_HEIGHT*rows + PENW
);
}
void CacheViewBlock::paint(QPainter *painter, const QStyleOptionGraphicsItem *option __attribute__((unused)), QWidget *widget __attribute__((unused))) {
// Draw horizontal lines
for (unsigned i = 0; i <= rows; i++)
painter->drawLine(0, i * ROW_HEIGHT, VD_WIDTH + (dirty ? VD_WIDTH : 0) + DATA_WIDTH*(columns + 1), i * ROW_HEIGHT);
// Draw vertical lines
painter->drawLine(0, 0, 0, rows*ROW_HEIGHT);
int c_width = VD_WIDTH;
painter->drawLine(c_width, 0, c_width, rows*ROW_HEIGHT);
if (dirty) {
c_width += VD_WIDTH;
painter->drawLine(c_width, 0, c_width, rows*ROW_HEIGHT);
}
c_width += DATA_WIDTH;
painter->drawLine(c_width, 0, c_width, rows*ROW_HEIGHT);
for (unsigned i = 0; i <= columns; i++) {
c_width += DATA_WIDTH;
painter->drawLine(c_width, 0, c_width, rows*ROW_HEIGHT);
}
}
void CacheViewBlock::cache_update(unsigned associat, unsigned set, bool valid, bool dirty, std::uint32_t tag, const std::uint32_t *data) {
if (associat != block)
return; // Ignore blocks that are not us
validity[set]->setText(valid ? "1" : "0");
if (this->dirty)
this->dirty[set]->setText(valid ? (dirty ? "1" : "0") : "");
// TODO calculate correct size of tag
this->tag[set]->setText(valid ? QString("0x") + QString("%1").arg(tag, 8, 16, QChar('0')).toUpper() : "");
for (unsigned i = 0; i < columns; i++)
this->data[set][i]->setText(valid ? QString("0x") + QString("%1").arg(data[i], 8, 16, QChar('0')).toUpper() : "");
}
CacheViewScene::CacheViewScene(const machine::Cache *cache) {
associativity = cache->config().associativity();
block = new CacheViewBlock*[associativity];
int offset = 0;
for (unsigned i = 0; i < associativity; i++) {
block[i] = new CacheViewBlock(cache, i);
addItem(block[i]);
block[i]->setPos(1, offset);
offset += block[i]->boundingRect().height() + 3;
}
}
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