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+

+//! Debugger support.
+
+use ::status::NTSTATUS;
+
+extern "C"
+{
+	/// `DbgPrint` routine sends a message to the kernel debugger.
+	pub fn DbgPrint(Format: *const u8, ...) -> NTSTATUS;
+	/// The `DbgPrintEx` routine sends a string to the kernel debugger if certain conditions are met.
+	pub fn DbgPrintEx(ComponentId: u32, Level: u32, Format: *const u8, ...) -> NTSTATUS;
+}
+
+extern "system"
+{
+	/// Breaks into the kernel debugger.
+	pub fn DbgBreakPoint();
+	/// Breaks into the kernel debugger and sends the value of `Status` to the debugger.
+	pub fn DbgBreakPointWithStatus(Status: NTSTATUS);
+}
+
+/// `DbgPrintEx` Message severity.
+#[repr(C)]
+pub enum DPFLTR_LEVEL {
+	ERROR = 0,
+	WARNING,
+	TRACE,
+	INFO,
+}
+
+/// `DbgPrintEx` Component name.
+#[repr(C)]
+pub enum DPFLTR_ID {
+	SYSTEM = 0,
+	SMSS,
+	SETUP,
+	NTFS,
+	// ...
+	IHVDRIVER = 77,
+	IHVVIDEO,
+	IHVAUDIO,
+	IHVNETWORK,
+	IHVSTREAMING,
+	IHVBUS,
+
+	DEFAULT = 99,
+}
+

+