feat: aarch64 port - fix build system obstacles, add exception handling, page tables

kernel/src/Terminal/Terminal.cpp

@@ -37,6 +37,14 @@ namespace Kt {
     // ANSI escape sequence filter state
     static bool g_ansiEscape = false;
 
+    static SerialSink g_serialSink = nullptr;
+
+    static void SerialPutchar(char c) {
+        if (g_serialSink == nullptr) return;
+        if (c == '\n') g_serialSink('\r');
+        g_serialSink(c);
+    }
+
     static void RingBufferAppend(char c) {
         // Strip ANSI escape sequences
         if (c == '\033') {
@@ -209,17 +217,19 @@ namespace Kt {
             // framebuffer terminal below; storing it in the ring makes file
             // consumers treat one logical newline as two line breaks.
             RingBufferAppend(c);
+            SerialPutchar(c);
 
             if (g_suppressKernelLog) {
                 return;
             }
-        }
-
-        // Once a graphical app takes over, suppress ALL flanterm writes
-        // (SYS_PRINT from user processes, etc.) to avoid painting text
-        // over the GUI framebuffer.
-        if (g_suppressKernelLog && g_kernelLogDepth == 0) {
-            return;
+        } else {
+            // Once a graphical app takes over, suppress ALL flanterm writes
+            // (SYS_PRINT from user processes, etc.) to avoid painting text
+            // over the GUI framebuffer.
+            if (g_suppressKernelLog) {
+                return;
+            }
+            SerialPutchar(c);
         }
 
         if (c == '\n') {
@@ -235,6 +245,18 @@ namespace Kt {
         }
     }
 
+    void AttachSerialConsole(SerialSink sink) {
+        g_termLock.Acquire();
+        uint64_t start = g_klogCount < KLOG_BUF_SIZE ? 0 : g_klogHead;
+        for (uint64_t i = 0; i < g_klogCount; i++) {
+            char c = g_klogBuf[(start + i) % KLOG_BUF_SIZE];
+            if (c == '\n') sink('\r');
+            sink(c);
+        }
+        g_serialSink = sink;
+        g_termLock.Release();
+    }
+
     void SuppressKernelLog() {
         g_suppressKernelLog = true;
     }