From 0214faa94bd01b8e876433e24bc3df2e679db40d Mon Sep 17 00:00:00 2001
From: "Chloe M." <chloe@mensia.org>
Date: Mon, 22 Jun 2026 17:03:49 +0000
Subject: [PATCH] stos/amd64: Add CPUID helper

Signed-off-by: Chloe M. <chloe@mensia.org>
---
 paw/stos/head/arch/amd64/cpuid.h | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 paw/stos/head/arch/amd64/cpuid.h

diff --git a/paw/stos/head/arch/amd64/cpuid.h b/paw/stos/head/arch/amd64/cpuid.h
new file mode 100644
index 0000000..033c271
--- /dev/null
+++ b/paw/stos/head/arch/amd64/cpuid.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2026, Chloe M.
+ * Provided under the BSD-3 clause.
+ *
+ * Description: CPUID helper
+ * Author:      Chloe M.
+ */
+
+#ifndef _MACHINE_CPUID_H_
+#define _MACHINE_CPUID_H_ 1
+
+#define CPUID(level, a, b, c, d)                        \
+    ASMV("cpuid\n\t"                                    \
+            : "=a" (a), "=b" (b), "=c" (c), "=d" (d)    \
+            : "0" (level))
+
+#endif  /* !_MACHINE_CPUID_H_ */