implement the debuglog() syscall

1 files changed, 10 insertions, 2 deletions

diff --git a/src/init/main.c b/src/init/main.c
index 6c4ccc3..fda68b7 100644
--- a/src/init/main.c
+++ b/src/init/main.c
@@ -1,15 +1,23 @@
+#include <kernel/syscalls.h>
+#include <stddef.h>
 #include <stdint.h>
 
 int _syscall(int, int, int, int);
 
+int debuglog(const char *msg, size_t len) {
+	return _syscall(SC_DEBUGLOG, (void*)msg, len, 0);
+}
+
+
 int main() {
-	uint8_t color = _syscall(1, 2, 3, 4);
+	debuglog("hello from init! ",
+	  sizeof("hello from init! ") - 1);
 
 	// change the colors of VGA text
 	// doesn't require a lot of code, but still shows that it's working
 	uint8_t *vga = (void*) 0xB8000;
 	for (int i = 0; i < 80 * 25; i++)
-		vga[(i << 1) + 1] = color;
+		vga[(i << 1) + 1] = 0x4e;
 
 	// try to mess with kernel memory
 	uint8_t *kernel = (void*) 0x100000;