From 4b2a0b852dba014f96cb68cabae1193ebae74535 Mon Sep 17 00:00:00 2001
From: Guiding Li <ligd@xiaomi.com>
Date: Wed, 29 Sep 2021 14:45:00 +0800
Subject: [PATCH] libmetal: add __sync_synchronize support

Signed-off-by: Guiding Li <liguiding1@xiaomi.com>
---
 lib/processor/xtensa/cpu.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/processor/xtensa/cpu.h b/lib/processor/xtensa/cpu.h
index 24fed7a6..44139957 100644
--- a/lib/processor/xtensa/cpu.h
+++ b/lib/processor/xtensa/cpu.h
@@ -13,5 +13,6 @@
 #define __METAL_XTENSA_CPU__H__
 
 #define metal_cpu_yield()
+#define __sync_synchronize()
 
 #endif /* __METAL_XTENSA_CPU__H__ */