libk: add its own makefile

1 files changed, 28 insertions, 0 deletions

diff --git a/libk/stdlib/console.cc b/libk/stdlib/console.cc
new file mode 100644
index 0000000..dbc9b86
--- /dev/null
+++ b/libk/stdlib/console.cc
@@ -0,0 +1,28 @@
+#include "stdlib.h"
+
+static Console *global_console = nullptr;
+
+void console_set(Console *ptr) {
+  if (ptr != nullptr) {
+    global_console = ptr;
+  }
+}
+
+void printk(const String &msg) {
+  if (global_console == nullptr)
+    return;
+
+  global_console->write(msg);
+}
+
+void abort() {
+  /*
+   * On gcc, a 'while(true) {}' will infinitely loop
+   * but clang will optimize it away on -O2 if it's empty
+   * therefore, add no-op
+   */
+  while (true) {
+    asm volatile("nop");
+  }
+  __builtin_unreachable();
+}