Kernel: AML implement SleepOp

kernel/include/kernel/ACPI/AML/Sleep.h

@@ -0,0 +1,38 @@
+#pragma once
+
+#include <kernel/ACPI/AML/Bytes.h>
+#include <kernel/ACPI/AML/ParseContext.h>
+#include <kernel/Timer/Timer.h>
+
+namespace Kernel::ACPI::AML
+{
+
+	struct Sleep
+	{
+		static ParseResult parse(ParseContext& context)
+		{
+			ASSERT(context.aml_data.size() >= 2);
+			ASSERT(static_cast<AML::Byte>(context.aml_data[0]) == AML::Byte::ExtOpPrefix);
+			ASSERT(static_cast<AML::ExtOp>(context.aml_data[1]) == AML::ExtOp::SleepOp);
+			context.aml_data = context.aml_data.slice(2);
+
+			auto sleep_time_result = AML::parse_object(context);
+			if (!sleep_time_result.success())
+				return ParseResult::Failure;
+			auto sleep_time = sleep_time_result.node() ? sleep_time_result.node()->as_integer() : BAN::Optional<uint64_t>();
+			if (!sleep_time.has_value())
+			{
+				AML_ERROR("Sleep time cannot be evaluated to an integer");
+				return ParseResult::Failure;
+			}
+
+#if AML_DEBUG_LEVEL >= 2
+			AML_DEBUG_PRINTLN("Sleeping for {} ms", sleep_time.value());
+#endif
+
+			SystemTimer::get().sleep(sleep_time.value());
+			return ParseResult::Success;
+		}
+	};
+
+}

kernel/kernel/ACPI/AML/Node.cpp

@@ -16,6 +16,7 @@
 #include <kernel/ACPI/AML/Processor.h>
 #include <kernel/ACPI/AML/Reference.h>
 #include <kernel/ACPI/AML/Region.h>
+#include <kernel/ACPI/AML/Sleep.h>
 #include <kernel/ACPI/AML/Store.h>
 #include <kernel/ACPI/AML/String.h>
 #include <kernel/ACPI/AML/ThermalZone.h>
@@ -75,6 +76,8 @@ namespace Kernel::ACPI
 					return AML::ThermalZone::parse(context);
 				case AML::ExtOp::CondRefOfOp:
 					return AML::Reference::parse(context);
+				case AML::ExtOp::SleepOp:
+					return AML::Sleep::parse(context);
 				default:
 					break;
 			}