From 3c2a519ee9ab1ee5fcf043eb403242859b541d6b Mon Sep 17 00:00:00 2001
From: Freya Murphy <freya@freyacat.org>
Date: Thu, 3 Apr 2025 23:38:33 -0400
Subject: serial and tty

---
 kernel/lib/fputc.c | 11 +++++++++++
 kernel/lib/panic.c | 16 ++++++++++++++++
 2 files changed, 27 insertions(+)
 create mode 100644 kernel/lib/fputc.c
 create mode 100644 kernel/lib/panic.c

(limited to 'kernel/lib')

diff --git a/kernel/lib/fputc.c b/kernel/lib/fputc.c
new file mode 100644
index 0000000..ef9b6f6
--- /dev/null
+++ b/kernel/lib/fputc.c
@@ -0,0 +1,11 @@
+#include <lib.h>
+#include <comus/drivers/tty.h>
+#include <comus/drivers/uart.h>
+
+void fputc(FILE *stream, char c)
+{
+	(void)stream; // TODO: manage stream
+	uart_out(c);
+	tty_out(c);
+}
+
diff --git a/kernel/lib/panic.c b/kernel/lib/panic.c
new file mode 100644
index 0000000..403418f
--- /dev/null
+++ b/kernel/lib/panic.c
@@ -0,0 +1,16 @@
+#include <lib.h>
+#include <stdarg.h>
+#include <comus/asm.h>
+
+__attribute__((noreturn)) void panic(const char *format, ...)
+{
+	cli();
+	va_list list;
+	va_start(list, format);
+	printf("\n\n!!! PANIC !!!\n");
+	vprintf(format, list);
+	printf("\n\n");
+
+	while (1)
+		halt();
+}
-- 
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