clean: use toris(); instead of asm(sti)

src/interrupt/idt.c

@@ -4,6 +4,8 @@
 #include "apic.h"
 #include "gdt.h"
 #include "idt.h"
+#include "interrupts.h"
+#include "sys/io.h"
 #include "kprintf.h"
 
 #define PIC1         0x20 /* IO base address for master PIC */
@@ -44,5 +46,5 @@ void init_idt(void)
 	for (uint8_t j = 0; j < 16; j++)
 		idt_set_descriptor(i + j, irq_stub_table[j], 0x8E);
 	load_idt(&idtr);
-	__asm__ volatile("sti");
+	// toris();
 }

src/kernel.c

@@ -48,4 +48,5 @@ void kernel_main(multiboot_info_t *mbd, uint32_t magic)
 	create_process(1);
 	create_thread(current_pcb, shell_init);
 	toris();
+	while (true);
 }

src/multitasking/process.c

@@ -46,13 +46,19 @@ struct pcb *create_process(uint8_t uid)
 		return NULL;
 	}
 	memcpy(new_pcb->heap, current_pcb->heap, 4096);
-	new_pcb->next = current_pcb->next;
-	new_pcb->prev = current_pcb;
-	current_pcb->next = new_pcb;
-	if (current_pcb->prev == current_pcb)
-		current_pcb->prev = new_pcb;
 
+	if (current_pcb) {
+		new_pcb->next = current_pcb->next;
+		new_pcb->prev = current_pcb;
+		current_pcb->next = new_pcb;
+		if (current_pcb->prev == current_pcb)
+			current_pcb->prev = new_pcb;
+	}
+	else {
+		current_pcb = new_pcb;
+	}
 	new_pcb->signals.pending = SIG_IGN;
+	new_pcb->thread_list = NULL;
 
 	return new_pcb;
 }

src/multitasking/thread.c

@@ -28,9 +28,14 @@ struct tcb *create_thread(struct pcb *process, void (*routine)(void))
 	new_tcb->state = NEW;
 
 	struct tcb *it = process->thread_list;
-	while (it)
-		it = it->next;
-	it = new_tcb;
+	if (it) {
+		while (it)
+			it = it->next;
+		it = new_tcb;
+	}
+	else {
+		process->thread_list = new_tcb;
+	}
 
 	return new_tcb;
 }