Reorganisation

10 files changed, 0 insertions, 765 deletions

diff --git a/src/stem/task/idt.c b/src/stem/task/idt.c
deleted file mode 100644
index 360ac91..0000000
--- a/src/stem/task/idt.c
+++ /dev/null
@@ -1,191 +0,0 @@
-#include "idt.h"
-#include <core/monitor.h>
-#include <core/sys.h>
-#include <mem/paging.h>
-#include "task.h"
-#include "syscall.h"
-
-#include <stdlib.h>
-
-extern void isr0();
-extern void isr1();
-extern void isr2();
-extern void isr3();
-extern void isr4();
-extern void isr5();
-extern void isr6();
-extern void isr7();
-extern void isr8();
-extern void isr9();
-extern void isr10();
-extern void isr11();
-extern void isr12();
-extern void isr13();
-extern void isr14();
-extern void isr15();
-extern void isr16();
-extern void isr17();
-extern void isr18();
-extern void isr19();
-extern void isr20();
-extern void isr21();
-extern void isr22();
-extern void isr23();
-extern void isr24();
-extern void isr25();
-extern void isr26();
-extern void isr27();
-extern void isr28();
-extern void isr29();
-extern void isr30();
-extern void isr31();
-
-extern void irq0();
-extern void irq1();
-extern void irq2();
-extern void irq3();
-extern void irq4();
-extern void irq5();
-extern void irq6();
-extern void irq7();
-extern void irq8();
-extern void irq9();
-extern void irq10();
-extern void irq11();
-extern void irq12();
-extern void irq13();
-extern void irq14();
-extern void irq15();
-
-extern void syscall64();
-
-extern void idt_flush(int32_t ptr);
-
-struct idt_entry idt_entries[256];
-struct idt_ptr idt_ptr;
-
-static int_callback irq_handlers[16] = {0};
-
-void idt_isrHandler(struct registers regs) {
-	if ((regs.int_no == 14 && paging_fault(&regs) != 0) || regs.int_no != 14) {
-		if (tasking_handleException(&regs) == 0) {
-			monitor_write("  >>  >> SOMETHING BAD HAPPENNED << <<\n");
-			monitor_write("Unhandled exception ");
-			monitor_writeHex(regs.int_no);
-			monitor_write(" @"); monitor_writeHex(regs.eip);
-			monitor_put('\n');
-			PANIC("unhandled exception");
-		}
-	}
-} 
-
-void idt_irqHandler(struct registers regs) {
-	uint32_t doSwitch = 0;
-	doSwitch |= (regs.int_no == 32);	//IRQ0 = timer
-	if (regs.err_code > 7) {
-		outb(0xA0, 0x20);
-	}
-	outb(0x20, 0x20);
-	if (irq_handlers[regs.err_code] != 0) {
-		irq_handlers[regs.err_code](&regs);
-	} else {
-		monitor_write("Unhandled IRQ "); monitor_writeHex(regs.int_no - 32); monitor_write("\n");
-	}
-	if (doSwitch) tasking_switch();
-}
-
-void idt_syscallHandler(struct registers regs) {
-	if (syscalls[regs.eax] != 0) {
-		syscalls[regs.eax](&regs);
-	} else {
-		PANIC("unhandled syscall");
-	}
-}
-
-static void idt_setGate(uint8_t num, uint32_t base, uint16_t sel, uint8_t flags) {
-	idt_entries[num].base_lo = base & 0xFFFF;
-	idt_entries[num].base_hi = (base >> 16) & 0xFFFF;
-
-	idt_entries[num].sel = sel;
-	idt_entries[num].always0 = 0;
-	idt_entries[num].flags = flags;
-}
-
-void idt_init() {
-	idt_ptr.limit = (sizeof(struct idt_entry) * 256) - 1;
-	idt_ptr.base = (uint32_t)&idt_entries;
-
-	memset((uint8_t*)&idt_entries, 0, sizeof(struct idt_entry) * 256);
-
-	//Remap the IRQ table
-	outb(0x20, 0x11);
-	outb(0xA0, 0x11);
-	outb(0x21, 0x20);
-	outb(0xA1, 0x28);
-	outb(0x21, 0x04);
-	outb(0xA1, 0x02);
-	outb(0x21, 0x01);
-	outb(0xA1, 0x01);
-	outb(0x21, 0x0);
-	outb(0xA1, 0x0);
-
-	idt_setGate(0, (int32_t)isr0, 0x08, 0x8E);
-	idt_setGate(1, (int32_t)isr1, 0x08, 0x8E);
-	idt_setGate(2, (int32_t)isr2, 0x08, 0x8E);
-	idt_setGate(3, (int32_t)isr3, 0x08, 0x8E);
-	idt_setGate(4, (int32_t)isr4, 0x08, 0x8E);
-	idt_setGate(5, (int32_t)isr5, 0x08, 0x8E);
-	idt_setGate(6, (int32_t)isr6, 0x08, 0x8E);
-	idt_setGate(7, (int32_t)isr7, 0x08, 0x8E);
-	idt_setGate(8, (int32_t)isr8, 0x08, 0x8E);
-	idt_setGate(9, (int32_t)isr9, 0x08, 0x8E);
-	idt_setGate(10, (int32_t)isr10, 0x08, 0x8E);
-	idt_setGate(11, (int32_t)isr11, 0x08, 0x8E);
-	idt_setGate(12, (int32_t)isr12, 0x08, 0x8E);
-	idt_setGate(13, (int32_t)isr13, 0x08, 0x8E);
-	idt_setGate(14, (int32_t)isr14, 0x08, 0x8E);
-	idt_setGate(15, (int32_t)isr15, 0x08, 0x8E);
-	idt_setGate(16, (int32_t)isr16, 0x08, 0x8E);
-	idt_setGate(17, (int32_t)isr17, 0x08, 0x8E);
-	idt_setGate(18, (int32_t)isr18, 0x08, 0x8E);
-	idt_setGate(19, (int32_t)isr19, 0x08, 0x8E);
-	idt_setGate(20, (int32_t)isr20, 0x08, 0x8E);
-	idt_setGate(21, (int32_t)isr21, 0x08, 0x8E);
-	idt_setGate(22, (int32_t)isr22, 0x08, 0x8E);
-	idt_setGate(23, (int32_t)isr23, 0x08, 0x8E);
-	idt_setGate(24, (int32_t)isr24, 0x08, 0x8E);
-	idt_setGate(25, (int32_t)isr25, 0x08, 0x8E);
-	idt_setGate(26, (int32_t)isr26, 0x08, 0x8E);
-	idt_setGate(27, (int32_t)isr27, 0x08, 0x8E);
-	idt_setGate(28, (int32_t)isr28, 0x08, 0x8E);
-	idt_setGate(29, (int32_t)isr29, 0x08, 0x8E);
-	idt_setGate(30, (int32_t)isr30, 0x08, 0x8E);
-	idt_setGate(31, (int32_t)isr31, 0x08, 0x8E);
-
-	idt_setGate(32, (int32_t)irq0, 0x08, 0x8E);
-	idt_setGate(33, (int32_t)irq1, 0x08, 0x8E);
-	idt_setGate(34, (int32_t)irq2, 0x08, 0x8E);
-	idt_setGate(35, (int32_t)irq3, 0x08, 0x8E);
-	idt_setGate(36, (int32_t)irq4, 0x08, 0x8E);
-	idt_setGate(37, (int32_t)irq5, 0x08, 0x8E);
-	idt_setGate(38, (int32_t)irq6, 0x08, 0x8E);
-	idt_setGate(39, (int32_t)irq7, 0x08, 0x8E);
-	idt_setGate(40, (int32_t)irq8, 0x08, 0x8E);
-	idt_setGate(41, (int32_t)irq9, 0x08, 0x8E);
-	idt_setGate(42, (int32_t)irq10, 0x08, 0x8E);
-	idt_setGate(43, (int32_t)irq11, 0x08, 0x8E);
-	idt_setGate(44, (int32_t)irq12, 0x08, 0x8E);
-	idt_setGate(45, (int32_t)irq13, 0x08, 0x8E);
-	idt_setGate(46, (int32_t)irq14, 0x08, 0x8E);
-	idt_setGate(47, (int32_t)irq15, 0x08, 0x8E);
-
-	idt_setGate(64, (int32_t)syscall64, 0x08, 0x8E);
-
-	idt_flush((int32_t)&idt_ptr);
-
-	monitor_write("IDT ok\n");
-}
-
-void idt_handleIrq(int number, int_callback func) {
-	irq_handlers[number] = func;
-}
diff --git a/src/stem/task/idt.h b/src/stem/task/idt.h
deleted file mode 100644
index bb89013..0000000
--- a/src/stem/task/idt.h
+++ /dev/null
@@ -1,33 +0,0 @@
-#ifndef DEF_IDT_H
-#define DEF_IDT_H
-
-#include <types.h>
-
-struct idt_entry {
-	uint16_t base_lo;		//Low part of address to jump to
-	uint16_t sel;			//Kernel segment selector
-	uint8_t always0;
-	uint8_t flags;			//Flags
-	uint16_t base_hi;		//High part of address to jump to
-} __attribute__((packed));
-
-struct idt_ptr {
-	uint16_t limit;
-	uint32_t base;
-} __attribute__((packed));
-
-struct registers {
-	uint32_t cr3;		//page directory physical address
-	uint32_t ds;                  // Data segment selector
-	uint32_t edi, esi, ebp, esp, ebx, edx, ecx, eax; // Pushed by pusha.
-	uint32_t int_no, err_code;    // Interrupt number and error code (if applicable)
-	uint32_t eip, cs, eflags, useresp, ss; // Pushed by the processor automatically.
-};
-
-typedef void (*int_callback)(struct registers*);
-
-void idt_init();
-void idt_handleIrq(int number, int_callback func);
-
-#endif
-
diff --git a/src/stem/task/idt_.asm b/src/stem/task/idt_.asm
deleted file mode 100644
index 63d1570..0000000
--- a/src/stem/task/idt_.asm
+++ /dev/null
@@ -1,155 +0,0 @@
-; UNRELATED
-
-[GLOBAL gdt_flush]
-
-gdt_flush:
-  mov eax, [esp+4]
-  lgdt [eax]
-
-  mov ax, 0x10
-  mov ds, ax
-  mov es, ax
-  mov fs, ax
-  mov gs, ax
-  mov ss, ax
-  jmp 0x08:.flush
-
-.flush:
-  ret
-
-; RELATED
-
-[GLOBAL idt_flush]
-idt_flush:
-   mov eax, [esp+4]  ; Get the pointer to the IDT, passed as a parameter. 
-   lidt [eax]        ; Load the IDT pointer.
-   ret
-
-;************************************************************************************
-
-%macro COMMONSTUB 1
-[EXTERN idt_%1Handler]
-%1_common_stub:
-   pusha                    ; Pushes edi,esi,ebp,esp,ebx,edx,ecx,eax
-
-   mov ax, ds               ; Lower 16-bits of eax = ds.
-   push eax                 ; save the data segment descriptor
-
-   mov ax, 0x10  ; load the kernel data segment descriptor
-   mov ds, ax
-   mov es, ax
-   mov fs, ax
-   mov gs, ax
-
-   mov eax, cr3
-   push eax
-
-   call idt_%1Handler
-   
-   pop eax
-   mov cr3, eax
-
-   pop eax        ; reload the original data segment descriptor
-   mov ds, ax
-   mov es, ax
-   mov fs, ax
-   mov gs, ax
-
-   popa                     ; Pops edi,esi,ebp...
-   add esp, 8     ; Cleans up the pushed error code and pushed ISR number
-   sti
-   iret 
-%endmacro
-
-COMMONSTUB isr
-COMMONSTUB irq
-COMMONSTUB syscall
-
-;************************************************************************************
-
-%macro ISR_NOERRCODE 1  ; define a macro, taking one parameter
-  [GLOBAL isr%1]        ; %1 accesses the first parameter.
-  isr%1:
-    cli
-    push byte 0
-    push byte %1
-    jmp isr_common_stub
-%endmacro
-
-%macro ISR_ERRCODE 1
-  [GLOBAL isr%1]
-  isr%1:
-    cli
-    push byte %1
-    jmp isr_common_stub
-%endmacro
-
-%macro IRQ 2
-  [GLOBAL irq%1]
-  irq%1:
-    cli
-    push byte %1	;push irq number
-    push byte %2	;push int number
-    jmp irq_common_stub
-%endmacro
-
-%macro SYSCALL 1
-  [GLOBAL syscall%1]
-  syscall%1:
-    cli
-    push byte 0
-    push byte %1
-    jmp syscall_common_stub
-%endmacro
-
-ISR_NOERRCODE 0
-ISR_NOERRCODE 1
-ISR_NOERRCODE 2
-ISR_NOERRCODE 3
-ISR_NOERRCODE 4
-ISR_NOERRCODE 5
-ISR_NOERRCODE 6
-ISR_NOERRCODE 7
-ISR_ERRCODE 8
-ISR_NOERRCODE 9
-ISR_ERRCODE 10
-ISR_ERRCODE 11
-ISR_ERRCODE 12
-ISR_ERRCODE 13
-ISR_ERRCODE 14
-ISR_NOERRCODE 15
-ISR_NOERRCODE 16
-ISR_NOERRCODE 17
-ISR_NOERRCODE 18
-ISR_NOERRCODE 19
-ISR_NOERRCODE 20
-ISR_NOERRCODE 21
-ISR_NOERRCODE 22
-ISR_NOERRCODE 23
-ISR_NOERRCODE 24
-ISR_NOERRCODE 25
-ISR_NOERRCODE 26
-ISR_NOERRCODE 27
-ISR_NOERRCODE 28
-ISR_NOERRCODE 29
-ISR_NOERRCODE 30
-ISR_NOERRCODE 31
-
-IRQ	0,	32
-IRQ	1,	33
-IRQ	2,	34
-IRQ	3,	35
-IRQ	4,	36
-IRQ	5,	37
-IRQ	6,	38
-IRQ	7,	39
-IRQ	8,	40
-IRQ	9,	41
-IRQ	10,	42
-IRQ	11,	43
-IRQ	12,	44
-IRQ	13,	45
-IRQ	14,	46
-IRQ	15,	47
-
-SYSCALL 64
diff --git a/src/stem/task/syscall.c b/src/stem/task/syscall.c
deleted file mode 100644
index 5aab011..0000000
--- a/src/stem/task/syscall.c
+++ /dev/null
@@ -1,21 +0,0 @@
-#include "syscall.h"
-
-#define CALL0(name, scname) static void scname(struct registers* r) { r->eax = name(); }
-#define CALL1(name, scname) static void scname(struct registers* r) { \
-	r->eax = name(r->ebx); }
-#define CALL2(name, scname) static void scname(struct registers* r) { \
-	r->eax = name(r->ebx, r->ecx); }
-
-CALL0(thread_exit, thread_exit_sc);
-CALL0(tasking_switch, schedule_sc);
-CALL1(thread_sleep, thread_sleep_sc);
-CALL1(process_exit, process_exit_sc);
-CALL1(monitor_write, printk_sc);
-
-int_callback syscalls[] = {
-	thread_exit_sc,
-	schedule_sc,
-	thread_sleep_sc,
-	process_exit_sc,
-	printk_sc,
-	0 };
diff --git a/src/stem/task/syscall.h b/src/stem/task/syscall.h
deleted file mode 100644
index 54af108..0000000
--- a/src/stem/task/syscall.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#ifndef DEF_SYSCALL_H
-#define DEF_SYSCALL_H
-
-#include "idt.h"
-
-extern int_callback syscalls[];
-
-#endif
-
diff --git a/src/stem/task/task.c b/src/stem/task/task.c
deleted file mode 100644
index 804adc2..0000000
--- a/src/stem/task/task.c
+++ /dev/null
@@ -1,245 +0,0 @@
-#include "task.h"
-#include <core/sys.h>
-#include <core/monitor.h>
-#include <mem/mem.h>
-#include "timer.h"
-
-#define KSTACKSIZE 0x8000
-
-//Static routines for handling threads exiting and all cleanup
-static void thread_exit_stackJmp(uint32_t reason);
-static void thread_exit2(uint32_t reason);
-static void thread_delete(struct thread *th);
-static void process_delete(struct process *pr);
-
-//From task_.asm
-extern uint32_t read_eip();
-extern void task_idle(void*);
-
-static uint32_t thread_runnable(struct thread *th);
-
-static uint32_t nextpid = 1;
-
-struct process *processes = 0, *kernel_process;
-struct thread *threads = 0, *current_thread = 0, *idle_thread;
-
-uint32_t tasking_tmpStack[0x4000];
-
-void tasking_init() {
-	cli();
-	kernel_process = kmalloc(sizeof(struct process));	//This process must be hidden to users
-	kernel_process->pid = kernel_process->uid = kernel_process->threads = 0;
-	kernel_process->privilege = PL_KERNEL;
-	kernel_process->parent = kernel_process;
-	kernel_process->pagedir = kernel_pagedir;
-	kernel_process->next = 0;
-	current_thread = 0;
-	idle_thread = thread_new(kernel_process, task_idle, 0);
-	threads = 0;	//Do not include idle thread in threads
-	sti();
-	monitor_write("Tasking set up\n");
-}
-
-static struct thread *thread_next() {
-	if (current_thread == 0 || current_thread == idle_thread) current_thread = threads;
-	struct thread *ret = current_thread;
-	while (1) {
-		ret = ret->next;
-		if (ret == 0) ret = threads;
-		if (thread_runnable(ret)) {
-		   return ret;
-		}
-		if (ret == current_thread) return idle_thread;
-	}
-}
-
-void tasking_switch() {
-	if (threads == 0) PANIC("No more threads to run !");
-	asm volatile("cli");
-
-	uint32_t esp, ebp, eip;
-
-	asm volatile("mov %%esp, %0" : "=r"(esp));
-	asm volatile("mov %%ebp, %0" : "=r"(ebp));
-	eip = read_eip();
-
-	if (eip == 0x12345) {
-		return;
-	}
-
-	if (current_thread != 0) {
-		current_thread->esp = esp;
-		current_thread->ebp = ebp;
-		current_thread->eip = eip;
-	}
-
-	current_thread = thread_next();
-
-	asm volatile("			\
-			mov %0, %%ebp;	\
-			mov %1, %%esp;	\
-			mov %2, %%ecx;	\
-			mov $0x12345, %%eax;	\
-			jmp *%%ecx;"
-		: : "r"(current_thread->ebp), "r"(current_thread->esp), "r"(current_thread->eip));
-}
-
-void tasking_updateKernelPagetable(uint32_t idx, struct page_table *table, uint32_t tablephysical) {
-	if (idx < 896) return;
-	struct process* it = processes;
-	while (it != 0) {
-		it->pagedir->tables[idx] = table;
-		it->pagedir->tablesPhysical[idx] = tablephysical;
-		it = it->next;
-	}
-}
-
-uint32_t tasking_handleException(struct registers *regs) {
-	if (current_thread == 0) return 0;	//No tasking yet
-	monitor_write("\n(task.c:99) Unhandled exception : ");
-	char *exception_messages[] = {"Division By Zero","Debug","Non Maskable Interrupt","Breakpoint",
-    "Into Detected Overflow","Out of Bounds","Invalid Opcode","No Coprocessor", "Double Fault",
-    "Coprocessor Segment Overrun","Bad TSS","Segment Not Present","Stack Fault","General Protection Fault",
-    "Page Fault","Unknown Interrupt","Coprocessor Fault","Alignment Check","Machine Check"};
-	monitor_write(exception_messages[regs->int_no]);
-	monitor_write(" at "); monitor_writeHex(regs->eip);
-	monitor_write(" >>> Thread exiting.\n");
-	thread_exit_stackJmp(EX_TH_EXCEPTION);
-	PANIC("This should never have happened. Please report this.");
-}
-
-void thread_sleep(uint32_t msecs) {
-	if (current_thread == 0) return;
-	current_thread->state = TS_SLEEPING;
-	current_thread->timeWait = timer_time() + msecs;
-	asm volatile("int $64" : : "a"(1));
-}
-
-void thread_exit2(uint32_t reason) {		//See EX_TH_* defines in task.h
-	/*
-	 * if reason == EX_TH_NORMAL, it is just one thread exiting because it has to
-	 * if reason == EX_TH_EXCEPTION, it is just one thread exiting because of an exception
-	 * if reason is none of the two cases above, it is the whole process exiting (with error code = reason)
-	 */
-	struct thread *th = current_thread;
-	struct process *pr = th->process;
-	if ((reason == EX_TH_NORMAL || reason == EX_TH_EXCEPTION) && pr->threads > 1) {
-		thread_delete(th);
-	} else {
-		process_delete(pr);
-	}
-	sti();
-	tasking_switch();
-}
-
-void thread_exit_stackJmp(uint32_t reason) {
-	uint32_t *stack;
-	cli();
-	stack = tasking_tmpStack + 0x4000;
-	stack--; *stack = reason;
-	stack--; *stack = 0;
-	asm volatile("			\
-			mov %0, %%esp;	\
-			mov %1, %%ebp;	\
-			mov %2, %%ecx;	\
-			mov %3, %%cr3;	\
-			jmp *%%ecx;" : :
-			"r"(stack), "r"(stack), "r"(thread_exit2), "r"(kernel_pagedir->physicalAddr));
-}
-
-void thread_exit() {
-	thread_exit_stackJmp(EX_TH_NORMAL);
-}
-
-void process_exit(uint32_t retval) {
-	if (retval == EX_TH_NORMAL || retval == EX_TH_EXCEPTION) retval = EX_PR_EXCEPTION;
-	thread_exit_stackJmp(retval);
-}
-
-static uint32_t thread_runnable(struct thread *t) {
-	if (t->state == TS_RUNNING) return 1;
-	if (t->state == TS_SLEEPING && timer_time() >= t->timeWait) return 1;
-	return 0;
-}
-
-static void thread_run(struct thread *thread, thread_entry entry_point, void *data) {
-	pagedir_switch(thread->process->pagedir);	//TODO : take into account privilege level
-	asm volatile("sti");
-	entry_point(data);
-	thread_exit(0);
-}
-
-struct thread *thread_new(struct process *proc, thread_entry entry_point, void *data) {
-	struct thread *t = kmalloc(sizeof(struct thread));
-	t->process = proc;
-	proc->threads++;
-	t->kernelStack_addr = kmalloc(KSTACKSIZE);
-	t->kernelStack_size = KSTACKSIZE;
-
-	uint32_t *stack = (uint32_t*)((size_t)t->kernelStack_addr + t->kernelStack_size);
-
-	//Pass parameters
-	stack--; *stack = (uint32_t)data;
-	stack--; *stack = (uint32_t)entry_point;	
-	stack--; *stack = (uint32_t)t;
-	stack--; *stack = 0;
-	t->esp = (uint32_t)stack;
-	t->ebp = t->esp + 8;
-	t->eip = (uint32_t)thread_run;
-
-	t->state = TS_RUNNING;
-
-	if (threads == 0) {
-		threads = t;
-	} else {
-		struct thread *i = threads;
-		while (i->next != 0) i = i->next;
-		i->next = t;
-	}
-	return t;
-}
-
-struct process *process_new(struct process* parent, uint32_t uid, uint32_t privilege) {
-	struct process* p = kmalloc(sizeof(struct process));
-	p->pid = (nextpid++);
-	p->uid = uid;
-	p->threads = 0;
-	p->privilege = privilege;
-	p->parent = parent;
-	p->pagedir = pagedir_new();
-	p->next = processes;
-	processes = p;
-	return p;
-}
-
-static void thread_delete(struct thread *th) {
-	kfree(th->kernelStack_addr);
-	th->process->threads--;
-	if (threads == th) {
-		threads = th->next;
-	} else {
-		struct thread *it = threads;
-		while (it->next != th && it->next != 0) it = it->next;
-		if (it->next == th) it->next = th->next;
-	}
-	kfree(th);
-}
-
-static void process_delete(struct process *pr) {
-	struct thread *it;
-	while (threads != 0 && threads->process == pr) thread_delete(threads);
-	it = threads;
-	while (it != 0) {
-		while (it->next->process == pr) thread_delete(it->next);
-		it = it->next;
-	}
-	pagedir_delete(pr->pagedir);
-	if (processes == pr) {
-		processes = pr->next;
-	} else {
-		struct process *it = processes;
-		while (it != 0 && it->next != pr) it = it->next;
-		if (it != 0 && it->next == pr) it->next = pr->next;
-	}
-	kfree(pr);
-}
diff --git a/src/stem/task/task.h b/src/stem/task/task.h
deleted file mode 100644
index c9f1794..0000000
--- a/src/stem/task/task.h
+++ /dev/null
@@ -1,55 +0,0 @@
-#ifndef DEF_TASK_H
-#define DEF_TASK_H
-
-#include <types.h>
-#include <mem/paging.h>
-#include "idt.h"
-
-#define TS_RUNNING 0	
-#define TS_SLEEPING 1	//Sleeping for a defined amount of time
-#define TS_WAIKWAIT 2	//Waiting to be waked up by something precise (thread currently blocked)
-
-#define PL_USER 3
-#define PL_SERVICE 2
-#define PL_DRIVER 1
-#define PL_KERNEL 0
-
-#define EX_TH_NORMAL	0x10000		//ERROR code : just one thread exits, because it has to
-#define EX_TH_EXCEPTION 0x10001		//ERROR code : just one thread exits, because of an unhandled exception
-#define EX_PR_EXCEPTION 0x10002		//ERROR code : all process finishes, because of an unhandled exception
-
-typedef void (*thread_entry)(void*);
-
-struct process {
-	uint32_t pid, uid, privilege, threads;
-	struct process *parent;
-	struct page_directory *pagedir;
-
-	struct process *next;	//Forms a linked list
-};
-
-struct thread {
-	struct process *process;
-	uint32_t esp, ebp, eip;
-	uint8_t state;
-	uint32_t timeWait;
-	void* kernelStack_addr;
-	uint32_t kernelStack_size;
-
-	struct thread *next;	//Forms a linked list
-};
-
-extern struct thread *current_thread;
-
-void tasking_init();
-void tasking_switch();
-void tasking_updateKernelPagetable(uint32_t idx, struct page_table *table, uint32_t tablePhysical);
-uint32_t tasking_handleException(struct registers *regs);
-
-void thread_sleep(uint32_t msecs);
-void thread_exit();
-void process_exit(uint32_t retval);
-struct thread * thread_new(struct process *proc, thread_entry entry_point, void *data);
-struct process* process_new(struct process *parent, uint32_t uid, uint32_t privilege);
-
-#endif
diff --git a/src/stem/task/task_.asm b/src/stem/task/task_.asm
deleted file mode 100644
index ae45c68..0000000
--- a/src/stem/task/task_.asm
+++ /dev/null
@@ -1,10 +0,0 @@
-[GLOBAL read_eip]
-read_eip:
-	pop eax
-	jmp eax
-
-[GLOBAL task_idle]
-task_idle:
-	sti
-	hlt
-	jmp task_idle
diff --git a/src/stem/task/timer.c b/src/stem/task/timer.c
deleted file mode 100644
index 8c1a2b8..0000000
--- a/src/stem/task/timer.c
+++ /dev/null
@@ -1,36 +0,0 @@
-#include "timer.h"
-#include "idt.h"
-#include <core/sys.h>
-#include <core/monitor.h>
-
-static uint32_t tick = 0, frequency = 0, uptime = 0;
-
-void timer_callback(struct registers *regs) {
-	tick++;
-	if (tick == frequency) {
-		uptime++;
-		tick = 0;
-	}
-}
-
-uint32_t timer_uptime() { return uptime; }
-
-uint32_t timer_time() {
-	return (uptime * 1000) + (tick * 1000 / frequency);
-}
-
-void timer_init(uint32_t freq) {
-	frequency = freq;
-
-	idt_handleIrq(0, timer_callback);
-
-	uint32_t divisor = 1193180 / freq;
-
-	outb(0x43, 0x36);	//Command byte
-
-	uint8_t l = (divisor & 0xFF), h = (divisor >> 8);
-	outb(0x40, l);
-	outb(0x40, h);
-
-	monitor_write("Timer started\n");
-}
diff --git a/src/stem/task/timer.h b/src/stem/task/timer.h
deleted file mode 100644
index 4909245..0000000
--- a/src/stem/task/timer.h
+++ /dev/null
@@ -1,10 +0,0 @@
-#ifndef DEF_TIMER_H
-#define DEF_TIMER_H
-
-#include <types.h>
-
-void timer_init(uint32_t frequency);
-uint32_t timer_time();		//Returns miliseconds (approximate) since computer started
-uint32_t timer_uptime();	//Same thing in seconds
-
-#endif