5 files changed, 119 insertions, 9 deletions
diff --git a/kernel/core/init.c b/kernel/core/init.c
new file mode 100644
index 0000000..d999a50
--- /dev/null
+++ b/kernel/core/init.c
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2025 Danny Holman <dholman@gymli.org>
+ *
+ * This file is part of BoxOS, a free and open-source Unix-like operating
+ * system.
+ *
+ * BoxOS is free software; you can redistribute it and/or modify under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 2 of the License, or (at your option) any later
+ * version.
+ *
+ * BoxOS is distributed in the hope it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * BoxOS; if not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <sys/paging.h>
+#include <sys/kmalloc.h>
+#include <sys/kprintf.h>
+
+void kernel_main(int argc, char* argv[]) {
+        kprintf("BoxOS - version %s\n", VERSION);
+}
diff --git a/kernel/libk/io.c b/kernel/core/kprintf.c
index eedc171..c12a01f 100644
--- a/kernel/libk/io.c
+++ b/kernel/core/kprintf.c
@@ -1,7 +1,25 @@
-#include <libk/io.h>
-#include <libk/string.h>
-#include <kernel/video/framebuffer.h>
-#include <kernel/tty/tty_vga.h>
+/*
+ * Copyright (C) 2025 Danny Holman <dholman@gymli.org>
+ *
+ * This file is part of BoxOS, a free and open-source Unix-like operating
+ * system.
+ *
+ * BoxOS is free software; you can redistribute it and/or modify under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 2 of the License, or (at your option) any later
+ * version.
+ *
+ * BoxOS is distributed in the hope it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * BoxOS; if not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <sys/kprintf.h>
+#include <sys/serial.h>
+#include <string.h>
 
 char* convert(unsigned int num, int base) {
         static char rep[] = "0123456789ABCDEF";
@@ -61,7 +79,6 @@ int vkprintf(const char *fmt, va_list args) {
                 }
         }
         //tty_write(buffer, strlen(buffer));
-        fb_write(buffer, strlen(buffer));
         memset(buffer, 0, 4096);
         return 0;
 }
diff --git a/kernel/core/panic.c b/kernel/core/panic.c
index a44a73c..742e71e 100644
--- a/kernel/core/panic.c
+++ b/kernel/core/panic.c
@@ -1,6 +1,26 @@
-#include <kernel/panic.h>
-#include <kernel/spinlock.h>
-#include <libk/io.h>
+/*
+ * Copyright (C) 2025 Danny Holman <dholman@gymli.org>
+ *
+ * This file is part of BoxOS, a free and open-source Unix-like operating
+ * system.
+ *
+ * BoxOS is free software; you can redistribute it and/or modify under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 2 of the License, or (at your option) any later
+ * version.
+ *
+ * BoxOS is distributed in the hope it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * BoxOS; if not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <sys/panic.h>
+#include <sys/kprintf.h>
+#include <sys/spinlock.h>
+#include <sys/asm.h>
 #include <stdint.h>
 #include <stddef.h>
 
diff --git a/kernel/core/stack_protector.c b/kernel/core/stack_protector.c
new file mode 100644
index 0000000..cb15a15
--- /dev/null
+++ b/kernel/core/stack_protector.c
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2025 Danny Holman <dholman@gymli.org>
+ *
+ * This file is part of BoxOS, a free and open-source Unix-like operating
+ * system.
+ *
+ * BoxOS is free software; you can redistribute it and/or modify under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 2 of the License, or (at your option) any later
+ * version.
+ *
+ * BoxOS is distributed in the hope it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * BoxOS; if not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <sys/panic.h>
+#include <stdint.h>
+
+uintptr_t __stack_chk_guard;
+
+__attribute__((noreturn)) void __stack_chk_fail(void) {
+        panic("Detected attempted stack manipulation in kernel");
+        while(1);
+}
diff --git a/kernel/libk/string.c b/kernel/core/string.c
index be59397..5502051 100644
--- a/kernel/libk/string.c
+++ b/kernel/core/string.c
@@ -1,4 +1,23 @@
-#include <libk/string.h>
+/*
+ * Copyright (C) 2025 Danny Holman <dholman@gymli.org>
+ *
+ * This file is part of BoxOS, a free and open-source Unix-like operating
+ * system.
+ *
+ * BoxOS is free software; you can redistribute it and/or modify under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 2 of the License, or (at your option) any later
+ * version.
+ *
+ * BoxOS is distributed in the hope it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * BoxOS; if not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <string.h>
 
 int memcmp(const void *str1, const void *str2, size_t n) {
         unsigned char const *p1 = str1;