From f2b4acb2fe6a366288b19843e0d2678b8590bdf4 Mon Sep 17 00:00:00 2001
From: Marvin Borner
Date: Sun, 25 Apr 2021 13:43:14 +0200
Subject: Chu chuu, using the bus for everything now!

Well, I know: bus != train. But I like trains. So I don't care.

Go away!
---
 kernel/features/logger.c | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 kernel/features/logger.c

(limited to 'kernel/features/logger.c')

diff --git a/kernel/features/logger.c b/kernel/features/logger.c
new file mode 100644
index 0000000..7db9a82
--- /dev/null
+++ b/kernel/features/logger.c
@@ -0,0 +1,42 @@
+// MIT License, Copyright (c) 2021 Marvin Borner
+
+#include <cpu.h>
+#include <def.h>
+#include <errno.h>
+#include <io.h>
+#include <logger.h>
+#include <mem.h>
+#include <print.h>
+#include <serial.h>
+
+static res logger_write(const void *buf, u32 offset, u32 count)
+{
+	if (offset)
+		return -EINVAL;
+
+	if (!count)
+		return EOK;
+
+	print_prefix();
+
+	u32 i;
+	stac();
+	for (i = 0; i < count; i++) {
+		if (!((const u8 *)buf)[i])
+			break;
+
+		serial_put(((const u8 *)buf)[i]);
+	}
+	clac();
+
+	serial_print("\x1B[0m");
+
+	return i;
+}
+
+void logger_install(void)
+{
+	struct io_dev *dev = zalloc(sizeof(*dev));
+	dev->write = logger_write;
+	io_add(IO_LOGGER, dev);
+}
-- 
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