add KePanic instead of splattering _disable __halt everywhere, implement a DMA + interrupts path to the IDE driver, move the dynamic arrays from kmain.c to ke_utils.h, remove weird unicode chars

code/kernel/ke_debug.c

@@ -14,6 +14,12 @@ void kernel_putchar(char c) {
     PrintChar(c, 0x00FF00, 0x000000);
 }
 
+void KeInitDebug(void (*PrintPtr)(char, uint32_t, uint32_t), int v) {
+    gDebugEnabled = v;
+    PrintChar = PrintPtr;
+    printf_set_putchar(kernel_putchar);
+}
+
 __declspec(dllexport) void DbgPrint(const char* fmt, ...) {
     if (!gDebugEnabled) return;
 
@@ -26,8 +32,24 @@ __declspec(dllexport) void DbgPrint(const char* fmt, ...) {
     KeReleaseSpinlock(&sl, flags);
 }
 
-void KeInitDebug(void (*PrintPtr)(char, uint32_t, uint32_t), int v) {
-    gDebugEnabled = v;
-    PrintChar = PrintPtr;
-    printf_set_putchar(kernel_putchar);
+// KePanic - Forces output even if debug was compiled out, then the macro halts.
+__declspec(dllexport) _Noreturn void KePanic(const char *fmt, ...) {
+    // We are done, go away
+    _disable();
+
+    // Print a bright-red banner so the framebuffer is unmistakable.
+    // We call PrintChar directly so we can set a red foreground.
+    // (DbgPrint uses green; we want this visually distinct.)
+    static const char banner[] = "\n*** KERNEL PANIC ***\n";
+    for (const char *p = banner; *p; p++)
+        PrintChar(*p, 0xFF2222, 0x000000);
+
+    // Now print the caller's message through the normal vprintf path.
+    va_list va;
+    va_start(va, fmt);
+    vprintf(fmt, va);
+    va_end(va);
+
+    // Halt it!
+    while (true) __halt();
 }