void schedule(unsigned int *stack){
if(active == TRUE){
task_t* cur_task = dequeue_task();
if(cur_task != NULL){
cur_pid = cur_task->pid;
dbg_bochs_print("@@@@@@@");
dbg_bochs_print(cur_task->name);
if(cur_task->status!=NEW){
cur_task->esp=*stack;
} else {
cur_task->status=READY;
((task_register_t *)(cur_task->esp))->eip = cur_task->eip;
}
enqueue_task(cur_task->pid, cur_task);
cur_task=get_task();
if(cur_task->status==NEW){
cur_task->status=READY;
}
dbg_bochs_print(" -- ");
dbg_bochs_print(cur_task->name);
dbg_bochs_print("\n");
//load_pdbr(cur_task->pdir);
*stack = cur_task->esp;
} else {
enqueue_task(cur_task->pid, cur_task);
}
}
active = FALSE;
return;
}
/**
* Create a new task
* @author Ivan Gualandri
* @version 1.0
* @param task_name The name of the task
* @param start_function the entry point of the task.
*/
pid_t new_task(char *task_name, void (*start_function)()){
asm("cli");
task_t *new_task;
table_address_t local_table;
unsigned int new_pid = request_pid();
new_task = (task_t*)kmalloc(sizeof(task_t));
strcpy(new_task->name, task_name);
new_task->next = NULL;
new_task->start_function = start_function;
new_task->cur_quants=0;
new_task->pid = new_pid;
new_task->eip = (unsigned int)start_function;
new_task->esp = (unsigned int)kmalloc(STACK_SIZE) + STACK_SIZE-100;
new_task->tty = tty_get_current();
dbg_bochs_print(new_task->esp);
new_task->status = NEW;
new_task->registers = (task_register_t*)new_task->esp;
new_tss(new_task->registers, start_function);
local_table = map_kernel();
new_task->pdir = local_table.page_dir;
new_task->ptable = local_table.page_table;
//new_task->pdir = 0;
//new_task->ptable = 0;
enqueue_task(new_task->pid, new_task);
//(task_list.current)->cur_quants = MAX_TICKS;
asm("sti");
return new_pid;
}
void suicide()
{
task_t* cur_task;
cur_task = get_task();
cur_task->status = DEAD;
dbg_bochs_print("suicide\n");
while(TRUE);
}
void tasks_init(){
asm("cli");
printf("Init tasks");
dbg_bochs_print("Task array setup");
task_list.head = NULL;
task_list.tail = NULL;
task_list.size = 0;
current_pid = 0;
asm("sti");
}
int main_loop(struct multiboot_info *boot_info)
{
_kclear();
syscall_init();
module_start = (char*) *((unsigned int*)boot_info->mods_addr);
module_end = *((unsigned int*)(boot_info->mods_addr+4));
_kcolor(BRIGHT_GREEN);
_kputs(DREAMOS_VER);
_kcolor(WHITE);
_kputs(LNG_SITE);
_kcolor(BRIGHT_BLUE);
_kputs(SITEURL);
_kputs("\n");
_kcolor(WHITE);
_kputs("\n");
_kputs(LNG_GDT);
init_gdt();
_kprintOK();
outportb(0xFF, MASTER_PORT_1);
outportb(0xFF, SLAVE_PORT_1);
_kputs(LNG_IDT);
asm("cli");
init_idt();
_kprintOK();
_kputs(LNG_PIC8259);
init_IRQ();
_kprintOK();
printf(LNG_PIT8253);
configure_PIT ();
//_kprintOK();
set_memorysize((boot_info->mem_upper+boot_info->mem_lower)*1024);
init_mem();
asm("sti");
_kprintOK();
init_paging();
_kprintOK();
printf("Memory (upper) amount-> %d kb \n", boot_info->mem_upper);
printf("Memory (lower) amount-> %d kb \n", boot_info->mem_lower);
/* Alloc and fill CPUID structure */
sinfo = kmalloc(sizeof(struct cpuinfo_generic));
get_cpuid (sinfo);
vfs_init();
initfs_init();
if(boot_info->mods_count > 0) printf("Found n. %d Modules\n", boot_info->mods_count);
//printf("Address of module: 0x%x - 0x%x\n", *((unsigned int*)boot_info->mods_addr),module_end-(unsigned int) module_start);
printf("\n");
printf("----\n");
printf(LNG_SHELL);
_kprintOK();
printf("[+] Address: 0x%x\n", &end);
printf("\n");
#ifdef BOCHS_DEBUG
dbg_bochs_print((const unsigned char*)"DreamOS Debug String for Bochs\n");
#endif
shell();
return 0;
}
