feat: make kernel architecture-agnostic; primitive work on arm port

kernel/src/ACPI/AcpiShutdown.cpp

@@ -5,6 +5,7 @@
 */
 
 #include "AcpiShutdown.hpp"
+#include <Arch/Cpu.hpp>
 #include "AcpiSleep.hpp"
 #include "AcpiEvents.hpp"
 #include <ACPI/FADT.hpp>
@@ -95,7 +96,7 @@ namespace Hal {
                 }
             }
 
-            asm volatile("cli");
+            Arch::DisableInterrupts();
 
             // Phase 1: Write SLP_TYP to PM1x_CNT without SLP_EN,
             //          preserving existing register bits
@@ -110,7 +111,7 @@ namespace Hal {
             }
 
             // Flush all caches before entering sleep state
-            asm volatile("wbinvd");
+            Arch::WritebackInvalidateCaches();
 
             // Phase 2: Assert SLP_EN to trigger the transition
             Io::Out16(pm1a | SLP_EN, (uint16_t)g_pm1aControlBlock);
@@ -122,7 +123,7 @@ namespace Hal {
 
             // Halt and wait for the hardware to power off
             for (;;) {
-                asm volatile("hlt");
+                Arch::Halt();
             }
         }
     };