Removes scheduler.
This commit is contained in:
Felix Queißner
parent
02364038bd
commit
91b72ceb68
3 changed files with 36 additions and 210 deletions
|
|
@ -1,44 +0,0 @@
|
|||
#pragma once
|
||||
|
||||
#include "driver.hpp"
|
||||
#include "cpustate.hpp"
|
||||
#include "pointer.hpp"
|
||||
|
||||
namespace driver
|
||||
{
|
||||
using EntryPoint = void (*)();
|
||||
|
||||
class Task
|
||||
{
|
||||
friend class Scheduler;
|
||||
private:
|
||||
Task *previous, *next;
|
||||
CpuState *cpu;
|
||||
physical_t stackBottom;
|
||||
|
||||
Task(EntryPoint ep);
|
||||
Task(const Task &) = delete;
|
||||
Task(Task &&) = delete;
|
||||
~Task();
|
||||
public:
|
||||
};
|
||||
|
||||
class Scheduler :
|
||||
public Driver
|
||||
{
|
||||
private:
|
||||
static Scheduler *current;
|
||||
static void dispatch(CpuState *& cpu);
|
||||
|
||||
Task *currentTask;
|
||||
Task *firstTask;
|
||||
Task *lastTask;
|
||||
CpuState * next(CpuState *cpu);
|
||||
public:
|
||||
Scheduler();
|
||||
|
||||
void install() override;
|
||||
|
||||
Task *spawn(EntryPoint ep);
|
||||
};
|
||||
}
|
||||
|
|
@ -13,7 +13,6 @@
|
|||
|
||||
#include "driver/timer.hpp"
|
||||
#include "driver/keyboard.hpp"
|
||||
#include "driver/scheduler.hpp"
|
||||
|
||||
#include <inttypes.h>
|
||||
#include <new>
|
||||
|
|
@ -31,7 +30,6 @@ extern dummy kernelEndMarker;
|
|||
|
||||
driver::Timer timer;
|
||||
driver::Keyboard keyboardDriver;
|
||||
// driver::Scheduler scheduler;
|
||||
|
||||
VMMContext * kernelContext;
|
||||
|
||||
|
|
@ -105,57 +103,24 @@ static void dump_elf(elf::Header *header)
|
|||
}
|
||||
}
|
||||
|
||||
void delay()
|
||||
static void initializePMM(Structure const & data)
|
||||
{
|
||||
for(volatile uint32_t i = 0; i < 0x1000000; i++);
|
||||
}
|
||||
|
||||
void task_a(void)
|
||||
{
|
||||
while (1) {
|
||||
Console::main.put('A');
|
||||
delay();
|
||||
}
|
||||
}
|
||||
|
||||
void task_b(void)
|
||||
{
|
||||
while (1) {
|
||||
Console::main.put('B');
|
||||
delay();
|
||||
}
|
||||
}
|
||||
|
||||
extern "C" void init(Structure const & data)
|
||||
{
|
||||
Console::main
|
||||
<< "Hello World!\n"
|
||||
<< FColor(Color::Yellow) << "Hello color!" << FColor() << "\n"
|
||||
<< BColor(Color::Blue) << "Hello blue!" << BColor() << "\n"
|
||||
<< "Hello default color.\n";
|
||||
|
||||
GDT::initialize();
|
||||
|
||||
Console::main
|
||||
<< "bootloader name: " << data.bootLoaderName << "\n"
|
||||
<< "command line: " << data.commandline << "\n"
|
||||
<< "count of modules: " << data.modules.length << "\n"
|
||||
<< "count of mmaps: " << data.memoryMaps.length << "\n";
|
||||
for(auto &mmap : data.memoryMaps) {
|
||||
if(mmap.length == 0) {
|
||||
continue;
|
||||
for(auto &mmap : data.memoryMaps) {
|
||||
if(mmap.length == 0) {
|
||||
continue;
|
||||
}
|
||||
if(mmap.isFree() == false) {
|
||||
continue;
|
||||
}
|
||||
Console::main
|
||||
<< "mmap: "
|
||||
<< "start: " << hex(mmap.base) << ", length: " << hex(mmap.length)
|
||||
<< ", " << mmap.entry_size
|
||||
<< ", " << sizeof(mmap)
|
||||
<< "\n";
|
||||
|
||||
//Console::main
|
||||
//<< "mmap: "
|
||||
//<< "start: " << hex(mmap.base) << ", length: " << hex(mmap.length)
|
||||
//<< ", " << mmap.entry_size
|
||||
//<< ", " << sizeof(mmap)
|
||||
//<< "\n";
|
||||
if(mmap.base > 0xFFFFFFFF) {
|
||||
Console::main << "mmap out of 4 gigabyte range." << "\n";
|
||||
//Console::main << "mmap out of 4 gigabyte range." << "\n";
|
||||
continue;
|
||||
}
|
||||
if(mmap.isFree()) {
|
||||
|
|
@ -180,8 +145,31 @@ extern "C" void init(Structure const & data)
|
|||
PMM::markUsed(physical_t(ptr));
|
||||
ptr += 0x1000;
|
||||
}
|
||||
|
||||
// nullptr is not valid.
|
||||
PMM::markUsed(physical_t(nullptr));
|
||||
|
||||
// Mark the video memory as used.
|
||||
PMM::markUsed(physical_t(0xB8000));
|
||||
}
|
||||
|
||||
extern "C" void init(Structure const & data)
|
||||
{
|
||||
Console::main
|
||||
<< "Hello World!\n"
|
||||
<< FColor(Color::Yellow) << "Hello color!" << FColor() << "\n"
|
||||
<< BColor(Color::Blue) << "Hello blue!" << BColor() << "\n"
|
||||
<< "Hello default color.\n";
|
||||
|
||||
GDT::initialize();
|
||||
|
||||
Console::main
|
||||
<< "bootloader name: " << data.bootLoaderName << "\n"
|
||||
<< "command line: " << data.commandline << "\n"
|
||||
<< "count of modules: " << data.modules.length << "\n"
|
||||
<< "count of mmaps: " << data.memoryMaps.length << "\n";
|
||||
|
||||
initializePMM(data);
|
||||
|
||||
auto freeMemory = PMM::getFreeMemory();
|
||||
Console::main
|
||||
|
|
@ -218,7 +206,6 @@ extern "C" void init(Structure const & data)
|
|||
|
||||
timer.install();
|
||||
keyboardDriver.install();
|
||||
//scheduler.install();
|
||||
|
||||
Console::main << "Drivers installed.\n";
|
||||
|
||||
|
|
@ -226,14 +213,7 @@ extern "C" void init(Structure const & data)
|
|||
|
||||
Console::main << "Interrupts enabled.\n";
|
||||
|
||||
//driver::Task *taskB = scheduler.spawn(task_b);
|
||||
//driver::Task *taskA = scheduler.spawn(task_a);
|
||||
//
|
||||
//Console::main
|
||||
//<< "Task A: " << taskA << "\n"
|
||||
//<< "Task B: " << taskB << "\n";
|
||||
|
||||
if(data.modules.length > 0 && false)
|
||||
if(data.modules.length > 0)
|
||||
{
|
||||
Console::main << "ELF Modukle:\n";
|
||||
dump_elf(data.modules[0].start.data<elf::Header>());
|
||||
|
|
|
|||
|
|
@ -1,110 +0,0 @@
|
|||
#include "driver/scheduler.hpp"
|
||||
#include "bsod.hpp"
|
||||
#include "pmm.hpp"
|
||||
#include "vmm.hpp"
|
||||
#include "idt.hpp"
|
||||
#include "console.hpp"
|
||||
#include <new>
|
||||
|
||||
extern VMMContext * kernelContext;
|
||||
|
||||
namespace driver
|
||||
{
|
||||
Scheduler * Scheduler::current = nullptr;
|
||||
|
||||
Scheduler::Scheduler() :
|
||||
currentTask(nullptr),
|
||||
firstTask(nullptr),
|
||||
lastTask(nullptr)
|
||||
{
|
||||
|
||||
}
|
||||
|
||||
void Scheduler::install()
|
||||
{
|
||||
if(Scheduler::current != nullptr) {
|
||||
BSOD::die(Error::DriverAlreadyInstalled, "The scheduler is already installed.");
|
||||
}
|
||||
Scheduler::current = this;
|
||||
|
||||
IDT::interrupt(0x20) = Interrupt(Scheduler::dispatch);
|
||||
}
|
||||
|
||||
CpuState * Scheduler::next(CpuState *cpu)
|
||||
{
|
||||
if (this->currentTask != nullptr) {
|
||||
this->currentTask->cpu = cpu;
|
||||
}
|
||||
|
||||
this->currentTask = this->currentTask->next;
|
||||
|
||||
/* Prozessorzustand des neuen Tasks aktivieren */
|
||||
return this->currentTask->cpu;
|
||||
}
|
||||
|
||||
void Scheduler::dispatch(CpuState *& cpu)
|
||||
{
|
||||
if(Scheduler::current != nullptr) {
|
||||
cpu = Scheduler::current->next(cpu);
|
||||
}
|
||||
}
|
||||
|
||||
static uint32_t memoryPointer = 0x20000000; // start at 512 MB
|
||||
|
||||
static virtual_t alloc()
|
||||
{
|
||||
virtual_t ptr(memoryPointer);
|
||||
kernelContext->provide(ptr, VMMFlags::Writable);
|
||||
memoryPointer += 0x1000;
|
||||
Console::main << "Providing " << ptr << "\n";
|
||||
return ptr;
|
||||
}
|
||||
|
||||
Task *Scheduler::spawn(EntryPoint ep)
|
||||
{
|
||||
void *memory = alloc().data();
|
||||
Task *task = new (memory) Task(ep);
|
||||
|
||||
asm volatile("cli");
|
||||
if(this->firstTask != nullptr) {
|
||||
task->next = this->firstTask;
|
||||
this->lastTask->next = task;
|
||||
this->firstTask = task;
|
||||
} else {
|
||||
this->lastTask = task;
|
||||
this->firstTask = task;
|
||||
task->next = task;
|
||||
}
|
||||
asm volatile("sti");
|
||||
return task;
|
||||
}
|
||||
|
||||
Task::Task(EntryPoint ep) :
|
||||
previous(nullptr), next(nullptr),
|
||||
cpu(nullptr),
|
||||
stackBottom(alloc().data())
|
||||
{
|
||||
this->cpu = (CpuState*)(this->stackBottom.numeric() + 4096 - sizeof(CpuState));
|
||||
this->cpu->eax = 0;
|
||||
this->cpu->ebx = 0;
|
||||
this->cpu->ecx = 0;
|
||||
this->cpu->edx = 0;
|
||||
this->cpu->esi = 0;
|
||||
this->cpu->edi = 0;
|
||||
this->cpu->ebp = 0;
|
||||
//this->cpu->.esp = unbenutzt (kein Ring-Wechsel)
|
||||
this->cpu->eip = reinterpret_cast<uint32_t>(ep);
|
||||
|
||||
/* Ring-0-Segmentregister */
|
||||
this->cpu->cs = 0x08;
|
||||
//this->cpu->.ss = unbenutzt (kein Ring-Wechsel)
|
||||
|
||||
/* IRQs einschalten (IF = 1) */
|
||||
this->cpu->eflags = 0x202;
|
||||
}
|
||||
|
||||
Task::~Task()
|
||||
{
|
||||
PMM::free(this->stackBottom);
|
||||
}
|
||||
}
|
||||
Loading…
Reference in a new issue