implement user mode catchable exceptions, refactor system status codes to use NTLSTATUS_ prefix, update build scripts to use shared literal macros for linker arguments, update named queue lifetime cleanup to include KeNamedQueueUnpublishHandle.

code/public/ntlite/exception.h

@@ -0,0 +1,24 @@
+// Native user-mode exception runtime declarations shared by applications and personalities.
+
+#pragma once
+
+#include <stdint.h>
+#include <ntlite/syscall.h>
+
+#if defined(NTL_EXCEPTION_EXPORTS)
+#define NTL_EXCEPTION_API __declspec(dllexport)
+#else
+#define NTL_EXCEPTION_API
+#endif
+
+#define NTL_EXCEPTION_CONTINUE_EXECUTION ((int)SYS_EXCEPTION_DISPOSITION_CONTINUE_EXECUTION)
+#define NTL_EXCEPTION_CONTINUE_SEARCH    ((int)SYS_EXCEPTION_DISPOSITION_CONTINUE_SEARCH)
+#define NTL_EXCEPTION_TERMINATE_PROCESS  ((int)SYS_EXCEPTION_DISPOSITION_TERMINATE_PROCESS)
+
+typedef int (*NTL_EXCEPTION_HANDLER)(SYS_EXCEPTION_RECORD* record,
+                                     SYS_USER_CONTEXT* context,
+                                     void* userContext);
+
+NTL_EXCEPTION_API uint32_t NtlInitializeExceptionRuntime(void);
+NTL_EXCEPTION_API void* NtlAddExceptionHandler(int first, NTL_EXCEPTION_HANDLER handler, void* context);
+NTL_EXCEPTION_API uint32_t NtlRemoveExceptionHandler(void* handle);