Finished CPU instructions and created ui window.

lib/interrupts.c

@@ -0,0 +1,34 @@
+#include <interrupts.h>
+#include <stack.h>
+
+void int_handle(cpu_context *ctx, u16 address) {
+    stack_push16(ctx->regs.pc);
+    ctx->regs.pc = address;
+}
+
+bool int_check(cpu_context *ctx, u16 address, interrupt_type t){
+    if(ctx->int_flags & t && ctx->ie_register & t) {
+        int_handle(ctx, address);
+        ctx->int_flags &= -t;
+        ctx->halted = false;
+        ctx->int_master_enabled = false;
+        return true;
+    }
+    return false;
+}
+
+void cpu_request_interrupt(interrupt_type t);
+
+void cpu_handle_interrupts(cpu_context *ctx) {
+    if (int_check(ctx, 0x40, IT_VBLANK)) {
+
+    } else if(int_check(ctx, 0x48, IT_LCD_STAT)){
+
+    } else if(int_check(ctx, 0x50, IT_TIMER)){
+        
+    } else if(int_check(ctx, 0x58, IT_SERIAL)){
+        
+    } else if(int_check(ctx, 0x60, IT_JOYPAD)){
+        
+    }
+}