feat: modfiy guest to test until gfx init emulated

guest/guest_main.c

 #include <stdint.h>
+
 #include "idt.h"
 #include "utils.h"
 #include "x86.h"
+#include "pmio.h"
+#include "shared/hypercall_params.h"
 
 // If PV == 1 => uses paravirtualized drivers (when available)
 // If PV == 0 => uses physical (hardware) drivers (when available)
@@ -12,12 +15,48 @@
 #endif
 
 // Dummy examples
-void timer_sleep_pv(int usec) {}
-void timer_sleep_phys(int usec) {}
+// void timer_sleep_pv(int usec) {}
+// void timer_sleep_phys(int usec) {}
 
 void guest_main() {
+
     idt_init();  // Initialize interrupt subsystem
     sti();       // Enable hardware interrupts
 
-    timer_sleep(100000);
+    // paravirtualized console
+
+    char *str = "abcdefgh";
+    hyper_virtual_console_params_t param_console;
+    param_console.msg = (uint64_t)str;
+    memcpy((void *)HYPERCALL_SHARED_ADDR, (void *)&param_console, sizeof(param_console));
+
+    outb(HYPERCALL_PMIO_ADDR, HYPERCALL_CODE_CONSOLE);
+
+    // paravirtualized timer
+
+    hyper_timer_sleep_params_t param_timer;
+    param_timer.us = 1e6;
+    memcpy((void *)HYPERCALL_SHARED_ADDR, (void *)&param_timer, sizeof(param_timer));
+
+    outb(HYPERCALL_PMIO_ADDR, HYPERCALL_CODE_TIMER);
+
+    // emulated timer
+
+    outw(REG_TIMER_CMD, 20);
+    outd(REG_TIMER_DATA, 1e6);
+
+    // paravirtualized gfx init 
+
+    hyper_init_gfx_params_t param_gfx;
+    param_gfx.width = 1920;
+    param_gfx.height = 1080;
+    memcpy((void *)HYPERCALL_SHARED_ADDR, (void *)&param_gfx, sizeof(param_gfx));
+
+    outb(HYPERCALL_PMIO_ADDR, HYPERCALL_CODE_GFX_INIT);
+
+    // emulated gfx init
+
+    // TODO:
+
+    // timer_sleep(100000);
 }