feat(isr): use offset instead of huge struct for handler

k/idt.h

@@ -44,14 +44,6 @@ struct idt_r
 // by the isr. We can refactor this by offsetting esp before pushing it.
 struct int_args
 {
-    uint32_t edi;
-    uint32_t esi;
-    uint32_t ebp;
-    uint32_t esp;
-    uint32_t ebx;
-    uint32_t edx;
-    uint32_t ecx;
-    uint32_t eax;
     uint32_t int_code;
     uint32_t err_code;
 } __attribute__ ((packed));

k/isr.S

@@ -4,6 +4,7 @@ isr:
 pushal              // save registers
 
 pushl   %esp
+add     $32, (%esp)
 call    handle_interrupt
 
 add     $4, %esp