Initial commit

src/pagetableentry.cpp

@@ -0,0 +1,127 @@
+/*
+ * PageTableEntry.cpp
+ *
+ *  Created on: May 22, 2019
+ *      Author: nathan
+ */
+
+#include "pagetableentry.h"
+
+namespace qkernel {
+
+static_assert(sizeof(PageTableEntry) == 4, "PTE structure is the wrong size!");
+
+PageTableEntry::PageTableEntry() {
+	this->present = 0;
+	this->rw = 0;
+	this->usermode = 0;
+	this->writeThrough = 0;
+	this->cacheDisable = 0;
+	this->accessed = 0;
+	this->dirty = 0;
+	this->pat = 0;
+	this->global = 0;
+	this->shared = 0;
+	this->ignored = 0;
+	this->physicalAddress = 0;
+}
+
+uint32_t PageTableEntry::getAccessed() const {
+	return accessed;
+}
+
+uint32_t PageTableEntry::getCacheDisable() const {
+	return cacheDisable;
+}
+
+void PageTableEntry::setCacheDisable(uint32_t cacheDisable)
+{
+	this->cacheDisable = cacheDisable;
+}
+
+uint32_t PageTableEntry::getDirty() const {
+	return dirty;
+}
+
+uint32_t PageTableEntry::getGlobal() const {
+	return global;
+}
+
+void PageTableEntry::setGlobal(uint32_t global)
+{
+	this->global = global;
+}
+
+uint32_t PageTableEntry::getPat() const {
+	return pat;
+}
+
+void PageTableEntry::setPat(uint32_t pat)
+{
+	this->pat = pat;
+}
+
+uint32_t PageTableEntry::getPhysicalAddress() const {
+	uint32_t physicalAddress = this->physicalAddress;
+	return physicalAddress << 12;
+}
+
+uint32_t PageTableEntry::setPhysicalAddress(uint32_t physicalAddress)
+{
+	if(physicalAddress % 4096 == 0)
+	{
+		this->physicalAddress = physicalAddress >> 12;
+		return this->physicalAddress;
+	}
+	else
+	{
+		this->physicalAddress = !physicalAddress;
+		return this->physicalAddress;
+	}
+}
+
+uint32_t PageTableEntry::getPresent() const {
+	return present;
+}
+
+void PageTableEntry::setPresent(uint32_t present)
+{
+	this->present = present;
+}
+
+uint32_t PageTableEntry::getRw() const {
+	return rw;
+}
+
+void PageTableEntry::setRw(uint32_t rw)
+{
+	this->rw = rw;
+}
+
+uint32_t PageTableEntry::getUsermode() const {
+	return usermode;
+}
+
+void PageTableEntry::setUsermode(uint32_t usermode)
+{
+	this->usermode = usermode;
+}
+
+uint32_t PageTableEntry::getWriteThrough() const {
+	return writeThrough;
+}
+
+uint32_t PageTableEntry::getShared() const {
+	return shared;
+}
+
+void PageTableEntry::setShared(uint32_t shared) {
+	this->shared = shared;
+}
+
+void PageTableEntry::setWriteThrough(uint32_t writeThrough)
+{
+	this->writeThrough = writeThrough;
+}
+
+} /* namespace qkernel */