From 3d51f8229826e6aa617537784881ff1f85be884e Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Thu, 17 Apr 2025 02:55:48 -0400
Subject: kernel/amd64: cdefs: Add more md_* macros

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 sys/include/arch/amd64/cdefs.h | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'sys')

diff --git a/sys/include/arch/amd64/cdefs.h b/sys/include/arch/amd64/cdefs.h
index 29a8841..256fd8b 100644
--- a/sys/include/arch/amd64/cdefs.h
+++ b/sys/include/arch/amd64/cdefs.h
@@ -33,6 +33,13 @@
 #include <sys/cdefs.h>
 #include <machine/sync.h>
 
-#define md_pause() __ASMV("rep; nop")
+/*
+ * Please use CLI wisely, it is a good idea to use
+ * md_sync_all() after using STI to ensure stable
+ * system operation.
+ */
+#define md_pause()  __ASMV("rep; nop")      /* (F3 90) PAUSE */
+#define md_intoff() __ASMV("cli")           /* Clear interrupts */
+#define md_inton()  __ASMV("sti")           /* Enable interrupts */
 
 #endif  /* !_AMD64_CDEFS_H_ */
-- 
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