From b1c7080563a3699016f2ad063f8c8842264ec071 Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Sat, 13 Sep 2025 23:03:25 -0400
Subject: os/amd64: mdcpu: Add md_spinwait() macro

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 src/sys/include/arch/amd64/mdcpu.h | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/sys/include/arch/amd64/mdcpu.h')

diff --git a/src/sys/include/arch/amd64/mdcpu.h b/src/sys/include/arch/amd64/mdcpu.h
index 98ecc16..420bdee 100644
--- a/src/sys/include/arch/amd64/mdcpu.h
+++ b/src/sys/include/arch/amd64/mdcpu.h
@@ -31,6 +31,9 @@
 #define _MACHINE_MDCPU_H_ 1
 
 #include <sys/types.h>
+#include <sys/cdefs.h>
+
+#define md_spinwait() __ASMV("pause")
 
 /*
  * Represents the machine dependent information
-- 
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