tasking: a small cleanup

src/tasking/switch.asm

@@ -1,14 +1,3 @@
-struc PCB
-    .PID            resd 1  ; Offset: 0
-    .STATE          resd 1  ; Offset: 4
-    .KSTACK         resd 1  ; Offset: 8
-    .CONTEXT        resd 1  ; Offset: 12
-    .TF             resd 1  ; Offset: 16
-    .FLAGS          resd 1  ; Offset: 20
-    .NEXT           resd 1  ; Offset: 24
-    .PAGE_DIRECTORY resd 1  ; Offset: 28
-endstruc
-
 ; void switchProcess(Process* next)
 section .text
 global switchProcess

src/tasking/syscalls.c

@@ -49,11 +49,10 @@ const char* flags_to_mode_str(int flags) {
 int sys_exit(TrapFrame *tf)
 {
     int error_code = tf->ebx;
-    printf("killing task\n");
+    debug_log("killing task\n");
     task_kill(current);
     asm("sti");
     while(1){}
-    printf("wtf??");
     return error_code;
 }
 

src/tasking/task.c

@@ -8,21 +8,15 @@
 
 Process* current = 0;
 Process* queue = 0;
-Process* zombie_list = 0;
 
 uint32_t irq_disable_counter = 0;
 uint32_t pid_counter;
 uint32_t task_count;
 
 #define KSTACKSIZE 4096
-#define USTACKSIZE 4096
 
 extern void trapret(void);
 extern void switchProcess(Process* next);
-//extern Process* queue;
-
-extern uint32_t pid_counter;
-extern uint32_t task_count;
 
 Process* task_create(uint32_t func, uint32_t user_esp, uint32_t ring, uint32_t* pagedir)
 {
@@ -58,19 +52,11 @@ Process* task_create(uint32_t func, uint32_t user_esp, uint32_t ring, uint32_t*
     p->tf->eflags = FL_IF;
     p->tf->eip = (uint32_t)func;
 
-    p->pagedir = pagedir;//(uint32_t*)create_page_dir();
+    p->pagedir = pagedir;
 
     if(ring == 3)
     {
-        /*void* user_stack_physical = alloc_page();
-
-        uint32_t user_stack_virtual_top = 0xBFFFF000 - ((p->pid -1) * (USTACKSIZE + 4096)); // Уникальный верх стека для каждого процесса
-        uint32_t user_stack_virtual_base = user_stack_virtual_top - USTACKSIZE;
-
-        map_page_in_directory(p->pagedir, user_stack_physical, (void*)user_stack_virtual_base, PAGE_PRESENT | PAGE_RW | PAGE_USER); // Флаги 0x7
-        */
-
-        p->tf->usermode_esp = user_esp;//user_stack_virtual_top;
+        p->tf->usermode_esp = user_esp;
 
     }
 
@@ -92,7 +78,6 @@ Process* task_create(uint32_t func, uint32_t user_esp, uint32_t ring, uint32_t*
             curr = curr->next;
         curr->next = p;
     }
-    task_count++;
     return p;
 }
 
@@ -164,8 +149,6 @@ void task2()
     while (1) { a++; printf("task2 %X\n", a); }
 }
 
-void jump_usermode2(void) ;
-
 void scheduler_init()
 {
     uint32_t* kernel_tasks_pagedir = (uint32_t*)create_page_dir();
@@ -174,7 +157,7 @@ void scheduler_init()
 }
 
 void task_kill(Process* proc) {
-    //that proc != current is sus
+    //TODO: that proc != current is sus
     if (!proc || proc != current) return;
 
     scheduler_lock();