panic() and halt() now in kernel private interface

1 files changed, 21 insertions, 0 deletions

diff --git a/kernel/panic.c b/kernel/panic.c
new file mode 100644
index 0000000..7a3a729
--- /dev/null
+++ b/kernel/panic.c
@@ -0,0 +1,21 @@
+#include "panic.h"
+
+static char const *reason_strings[] = {
+    "general panic",
+    "unhandled fault",
+};
+
+noreturn void panic(enum panic_reason reason)
+{
+    // TODO: kprintf() and friends
+    kputs("kernel panic: ")
+    kputs(reason_strings[reason]);
+    kputs("\n");
+    halt();
+}
+
+noreturn void halt(void)
+{
+    __asm__ ("cli\n\t");
+    while (true) __asm__ ("hlt\n\t");
+}