Add ygg_debug_trace(2)

include/sys/debug.h

@@ -0,0 +1,3 @@
+#pragma once
+
+void ygg_debug_trace(const char *msg, ...);

src/sys/debug.c

@@ -0,0 +1,19 @@
+#include <_libc/syscalls.h>
+#include <ygg/syscall.h>
+#include <sys/ioctl.h>
+#include <stdint.h>
+#include <stdarg.h>
+#include <errno.h>
+
+void ygg_debug_trace(const char *fmt, ...) {
+    uintptr_t a0, a1, a2, a3, a4;
+    va_list args;
+    va_start(args, fmt);
+    a0 = va_arg(args, uintptr_t);
+    a1 = va_arg(args, uintptr_t);
+    a2 = va_arg(args, uintptr_t);
+    a3 = va_arg(args, uintptr_t);
+    a4 = va_arg(args, uintptr_t);
+    va_end(args);
+    __syscall6(SYSCALL_NRX_TRACE, (long) fmt, a0, a1, a2, a3, a4);
+}