user: implement mlibc as the libc, finally.

It's finally done.. Signed-off-by: kaguya <vpshinomiya@protonmail.com>
2026-05-02 03:31:49 -04:00
parent 2fa39ad85a
commit 9a9b91c940
2387 changed files with 152741 additions and 315 deletions
@@ -0,0 +1,31 @@
+#include <stdint.h>
+#include <string.h>
+#include <mlibc/debug.hpp>
+#include <mlibc/stack_protector.hpp>
+
+uintptr_t __stack_chk_guard = 0;
+
+namespace mlibc {
+
+void initStackGuard(void *entropy) {
+	if(entropy != nullptr) {
+		memcpy(&__stack_chk_guard, entropy, sizeof(__stack_chk_guard));
+	} else {
+		// If no entropy is available, set it to the terminator canary
+		__stack_chk_guard = 0;
+		__stack_chk_guard |= ('\n' << 16);
+		__stack_chk_guard |= (255 << 24);
+	}
+}
+
+} // namespace mlibc
+
+extern "C" [[noreturn]] void __stack_chk_fail() {
+	mlibc::panicLogger() << "Stack smashing detected!" << frg::endlog;
+	__builtin_unreachable();
+}
+
+extern "C" [[noreturn, gnu::visibility("hidden")]] void __stack_chk_fail_local() {
+	__stack_chk_fail();
+};
+