void tss_inicializar() {
unsigned int i, cr3;
for (i = 0; i < CANT_TANQUES; i++) {
cr3 = mmu_inicializar_dir_tarea(i); /* CONSULTAR */
tss_tanques[i].ptl = 0x0;
tss_tanques[i].unused0 = 0x0;
tss_tanques[i].esp0 = mmu_crear_pagina() + PAGE_SIZE;
tss_tanques[i].ss0 = 0b1011000;
tss_tanques[i].unused1 = 0x0;
tss_tanques[i].esp1 = 0x0;
tss_tanques[i].ss1 = 0x0;
tss_tanques[i].unused2 = 0x0;
tss_tanques[i].esp2 = 0x0;
tss_tanques[i].ss2 = 0x0;
tss_tanques[i].unused3 = 0x0;
tss_tanques[i].cr3 = cr3; /* ??? */
tss_tanques[i].eip = 0x8000000;
tss_tanques[i].eflags = 0x00000202;
tss_tanques[i].eax = 0x0;
tss_tanques[i].ecx = 0x0;
tss_tanques[i].edx = 0x0;
tss_tanques[i].ebx = 0x0;
tss_tanques[i].esp = 0x8002000;
tss_tanques[i].ebp = 0x8002000;
tss_tanques[i].esi = 0x0;
tss_tanques[i].edi = 0x0;
tss_tanques[i].es = 0b1100011;
tss_tanques[i].unused4 = 0x0;
tss_tanques[i].cs = 0b1010011; /* desc lvl 3 */
tss_tanques[i].unused5 = 0x0;
tss_tanques[i].ss = 0b1100011;
tss_tanques[i].unused6 = 0x0;
tss_tanques[i].ds = 0b1100011;
tss_tanques[i].unused7 = 0x0;
tss_tanques[i].fs = 0b1100011;
tss_tanques[i].unused8 = 0x0;
tss_tanques[i].gs = 0b1100011;
tss_tanques[i].unused9 = 0x0;
tss_tanques[i].ldt = 0x0;
tss_tanques[i].unused10 = 0x0;
tss_tanques[i].dtrap = 0x0; /* ??? */
tss_tanques[i].iomap = 0xffff;
}
gdt[GDT_TSS_TAREA_INICIAL].base_31_24 = (unsigned int) (&tss_inicial) >> 24;
gdt[GDT_TSS_TAREA_INICIAL].base_23_16 = ((unsigned int) (&tss_inicial) >> 16) & 0xff;
gdt[GDT_TSS_TAREA_INICIAL].base_0_15 = (unsigned int) (&tss_inicial) & 0xffff;
gdt[GDT_TSS_1].base_31_24 = (unsigned int) (&tss_next_1) >> 24;
gdt[GDT_TSS_1].base_23_16 = ((unsigned int) (&tss_next_1) >> 16) & 0xff;
gdt[GDT_TSS_1].base_0_15 = (unsigned int) (&tss_next_1) & 0xffff;
gdt[GDT_TSS_2].base_31_24 = (unsigned int) (&tss_next_2) >> 24;
gdt[GDT_TSS_2].base_23_16 = ((unsigned int) (&tss_next_2) >> 16) & 0xff;
gdt[GDT_TSS_2].base_0_15 = (unsigned int) (&tss_next_2) & 0xffff;
}
//inicializa para las tareas [0..CANT_TAREAS] sus estructuras de paginacion y sus mapeos(cerrado el intervalo pq la task idle tambien cuenta)
void mmu_inicializar_dir_tareas(){
unsigned int i=0;
for(i=0;i<CANT_TAREAS+1/*la idle task tambien cuenta y es la novena contando desde 0*/;i++){
mmu_inicializar_dir_tarea(i);
}
// changePaginationContext((pagedir_entry*)mmu_get_task_pageDirAddress(0));
// ejercicio 4c testeado sobre la tarea idle
// unsigned int oldCR3 = changePaginationContext((pagedir_entry*)mmu_get_task_pageDirAddress(8));
//
// unsigned char _modoEscritura = (0x4 << 4) | (0xF);
// unsigned char _caracter = 176;//░
//
// *((unsigned int*)0x66000) = (_modoEscritura << 8) | _caracter;
// memcpy((void*)VIDEO, (void*)0x66000, 2/*copio 2 bytes*/);
//
// changePaginationContext((pagedir_entry*)oldCR3);
}
