feat: introduced tasking, added paging (no vm), moved malloc, added

syscalls, other stuff

kernel/cpu/isr.c

@@ -5,9 +5,11 @@
 #include "isr.h"
 
 #include <cpu/idt.h>
+#include <cpu/syscall_handler.h>
 #include <libc/libc.h>
 #include <drivers/ports.h>
 #include <libc/kprintf.h>
+#include <libk.h>
 
 #define PIC_END_OF_INTERRUPT 0x20
 
@@ -48,6 +50,7 @@ void isr_install() {
     set_idt_gate(31, (uint32_t) isr31);
 
     // Remap the PIC
+    // todo make readable
     port_byte_out(0x20, 0x11);
     port_byte_out(0xA0, 0x11);
     port_byte_out(0x21, 0x20);
@@ -77,6 +80,8 @@ void isr_install() {
     set_idt_gate(46, (uint32_t) irq14);
     set_idt_gate(47, (uint32_t) irq15);
 
+    set_idt_gate(128, (uint32_t) isr128);
+
     set_idt(); // Load with ASM
 }
 
@@ -118,15 +123,20 @@ char *exception_messages[] = {
         "Reserved"
 };
 
-void isr_handler(registers_t r) {
+void isr_handler(isr_registers_t r) {
+    if (r.int_no == 128) {
+        syscall_handle(&r);
+        return;
+    }
     printf("Received interrupt: %d - %s\n", r.int_no, exception_messages[r.int_no]);
+    k_panic();
 }
 
 void register_interrupt_handler(uint8_t n, isr_t handler) {
     interrupt_handlers[n] = handler;
 }
 
-void irq_handler(registers_t r) {
+void irq_handler(isr_registers_t r) {
     /* After every interrupt we need to send an EOI to the PICs
      * or they will not send another interrupt again */
     if (r.int_no >= 40) port_byte_out(PORT_PIC_SLAVE_COMMAND, PIC_END_OF_INTERRUPT); /* slave */
@@ -135,6 +145,6 @@ void irq_handler(registers_t r) {
     /* Handle the interrupt in a more modular way */
     if (interrupt_handlers[r.int_no] != NULL) {
         isr_t handler = interrupt_handlers[r.int_no];
-        handler(r);
+        handler(&r);
     }
 }