stos: Add kernel knotting impl

Signed-off-by: Chloe M. <chloe@mensia.org>
2026-06-23 05:36:10 +00:00
parent d2596979a2
commit 81d5f13a30
4 changed files with 136 additions and 1 deletions
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2026, Chloe M.
+ * Provided under the BSD-3 clause.
+ *
+ * Description:  Fucks and knots the kernel
+ * Author:       Chloe M.
+ */
+
+#include <drivers/bootvid/fbio.h>
+#include <ex/trace.h>
+#include <ke/knot.h>
+
+#define KNOT_REASON(Reason)             \
+    ((Reason) >= NELEM(ReasonTable))    \
+        ? ReasonTable[0]                \
+        : ReasonTable[(Reason)]
+
+/* Reason lookup table */
+static const CHAR *ReasonTable[] = {
+    [KNOT_MISC] = "unspecified reason",
+    [KNOT_UNBOUND_RSRC] = "unbounded resource"
+};
+
+/* Globals */
+static CHAR KnotBuf[256];
+static va_list Ap;
+static BOOTCONS_ATTR KnotAttr = {
+    .Background = 0x000080,
+    .Foreground = 0xFFFFFF
+};
+
+static CHAR KnotMessage[] = {
+    "SystemPaw DR has ran into a wittle issue and the kernel pilot kitty\n"
+    "has suspended the CPU to prevent damage to your machine.\n\n"
+    "Press and hold the power button until the screen blanks.\n\n"
+};
+
+VOID
+KiKnot(KNOT_REASON Reason, const CHAR *Fmt, ...)
+{
+    va_start(Ap, Fmt);
+    FmtPrintf(KnotBuf, sizeof(KnotBuf), Fmt, Ap);
+    BootVidInitCons(&KnotAttr);
+
+    TRACE("\033[H\033[2J");
+    TRACE(KnotMessage);
+    TRACE("knot: %s", KnotBuf);
+    TRACE("reason: %s\n", KNOT_REASON(Reason));
+}