142 lines
2.4 KiB
C++
Executable File
142 lines
2.4 KiB
C++
Executable File
/*
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* PageTableEntry.cpp
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*
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* Created on: May 22, 2019
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* Author: nathan
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*/
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#include "pagetableentry.hpp"
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namespace kernel {
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static_assert(sizeof(PageTableEntry) == 4, "PTE structure is the wrong size!");
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PageTableEntry::PageTableEntry() {
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this->present = 0;
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this->rw = 0;
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this->usermode = 0;
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this->writeThrough = 0;
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this->cacheDisable = 0;
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this->accessed = 0;
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this->dirty = 0;
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this->pat = 0;
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this->global = 0;
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this->shared = 0;
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this->ignored = 0;
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this->physicalAddress = 0;
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}
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bool PageTableEntry::getAccessed() const {
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return accessed == 1;
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}
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bool PageTableEntry::getCacheDisable() const
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{
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return cacheDisable == 1;
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}
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void PageTableEntry::setCacheDisable(bool cacheDisable)
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{
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this->cacheDisable = cacheDisable ? 1 : 0;
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}
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bool PageTableEntry::getDirty() const
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{
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return dirty == 1;
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}
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bool PageTableEntry::getGlobal() const
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{
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return global == 1;
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}
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void PageTableEntry::setGlobal(bool global)
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{
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this->global = global ? 1 : 0;
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}
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bool PageTableEntry::getPat() const
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{
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return pat == 1;
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}
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void PageTableEntry::setPat(bool pat)
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{
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this->pat = pat ? 1 : 0;
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}
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physaddr_t PageTableEntry::getPhysicalAddress() const {
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physaddr_t physicalAddress = this->physicalAddress;
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return physicalAddress << 12;
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}
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physaddr_t PageTableEntry::setPhysicalAddress(physaddr_t physicalAddress)
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{
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this->physicalAddress = physicalAddress >> 12;
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return this->physicalAddress << 12;
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}
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bool PageTableEntry::getPresent() const
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{
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return present == 1;
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}
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void PageTableEntry::setPresent(bool present)
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{
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this->present = present ? 1 : 0;
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}
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bool PageTableEntry::getRw() const
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{
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return rw == 1;
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}
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void PageTableEntry::setRw(bool rw)
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{
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this->rw = rw ? 1 : 0;
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}
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bool PageTableEntry::getUsermode() const
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{
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return usermode == 1;
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}
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void PageTableEntry::setUsermode(bool usermode)
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{
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this->usermode = usermode ? 1 : 0;
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}
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bool PageTableEntry::getWriteThrough() const {
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return writeThrough == 1;
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}
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bool PageTableEntry::getShared() const
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{
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return shared == 1;
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}
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void PageTableEntry::setShared(bool shared)
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{
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this->shared = shared ? 1 : 0;
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}
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void PageTableEntry::setWriteThrough(bool writeThrough)
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{
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this->writeThrough = writeThrough ? 1 : 0;
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}
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physaddr_t PageTableEntry::operator=(physaddr_t rhs)
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{
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return setPhysicalAddress(rhs);
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}
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PageTableEntry PageTableEntry::operator=(PageTableEntry rhs)
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{
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uint32_t* iThis = (uint32_t*) this;
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uint32_t* iThat = (uint32_t*) &rhs;
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*iThis = *iThat;
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return rhs;
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}
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}
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