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/user/system/init/init.c

@@ -3,6 +3,7 @@
 #include <stdint.h>
 #include <stdbool.h>
 #include <stddef.h>
+#include <ntlite/exception.h>
 #include <ntlite/syscall.h>
 
 // Implements the itoa operation.
@@ -54,8 +55,13 @@ static void debug_print(const char* s) {
     (void)SysPrintDebug(&req);
 }
 
+// Initializes init process state and supervises the configured child process.
 void _start(void)
 {
+    uint32_t runtimeStatus = NtlInitializeExceptionRuntime();
+    if (runtimeStatus != NTLSTATUS_SUCCESS)
+        SysExitProcess((int32_t)runtimeStatus);
+
     SYS_STRING_VIEW args = SysGetPeb()->CommandLine;
     uint32_t h = 0;
     uint32_t s = 0;
@@ -64,7 +70,7 @@ void _start(void)
         debug_print("[init] starting\n");
         SYS_CREATE_PROCESS_REQUEST cp = { args, SysSvFromParts(0, 0), &h };
         s = SysCreateProcess(&cp);
-        if (s != STATUS_SUCCESS) {
+        if (s != NTLSTATUS_SUCCESS) {
             debug_print("[init] FATAL: failed to start!\n");
             char buffer[12];
             itoa(s, buffer);
@@ -75,11 +81,11 @@ void _start(void)
 
         debug_print("[init] waiting\n");
         s = SysWait(h, SYS_WAIT_FLAG_NONE);
-        if (s != STATUS_SUCCESS)
+        if (s != NTLSTATUS_SUCCESS)
             debug_print("[init] WARNING: SysWait returned error\n");
 
         int32_t exitCode = 0;
-        if (SysGetProcessExitCode(h, &exitCode) != STATUS_SUCCESS) {
+        if (SysGetProcessExitCode(h, &exitCode) != NTLSTATUS_SUCCESS) {
             debug_print("[init] WARNING: failed to read exit code\n");
             exitCode = 1;
         }