From ca2d9002fcbebcf37f48944dd8d67e90c186ce4f Mon Sep 17 00:00:00 2001
From: Uros Majstorovic <majstor@majstor.org>
Date: Sun, 13 Oct 2019 05:21:28 +0200
Subject: fixed msgq bug

---
 code/fe310/eos/trap_entry.S | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'code/fe310/eos/trap_entry.S')

diff --git a/code/fe310/eos/trap_entry.S b/code/fe310/eos/trap_entry.S
index 21cf2f8..432e84a 100644
--- a/code/fe310/eos/trap_entry.S
+++ b/code/fe310/eos/trap_entry.S
@@ -266,8 +266,10 @@ i2s_handler_sd_xchg:
   lhu x18, I2S_ABUF_OFF_IDXR(x9)
   lhu x19, I2S_ABUF_OFF_IDXW(x9)
   lhu x20, I2S_ABUF_OFF_SIZE(x9)
+  li x21, 0xffff
 
   sub x18, x19, x18
+  and x18, x18, x21
   beq x18, x20, 0f
 
   addi x19, x19, 1
-- 
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