From 8fbebead19543ced8d56cd10ddc48e5ee7755b19 Mon Sep 17 00:00:00 2001
From: SarahW <SarahW@localhost>
Date: Tue, 20 Jun 2017 19:32:58 +0100
Subject: [PATCH] CHECK_READ()/CHECK_WRITE() now handle code segments. Patch
 from Greatpsycho.

---
 src/386_common.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/386_common.h b/src/386_common.h
index 88a92fc..36519fa 100644
--- a/src/386_common.h
+++ b/src/386_common.h
@@ -38,14 +38,14 @@ int checkio(int port);
                         }
 
 #define CHECK_READ(seg, low, high)  \
-        if ((low < (seg)->limit_low) || (high > (seg)->limit_high))       \
+        if ((low < (seg)->limit_low) || (high > (seg)->limit_high) || ((msw & 1) && !(eflags & VM_FLAG) && (((seg)->access & 10) == 8)))       \
         {                                       \
                 x86gpf("Limit check", 0);       \
                 return 1;                       \
         }
 
 #define CHECK_WRITE(seg, low, high)  \
-        if ((low < (seg)->limit_low) || (high > (seg)->limit_high) || !((seg)->access & 2))       \
+        if ((low < (seg)->limit_low) || (high > (seg)->limit_high) || !((seg)->access & 2) || ((msw & 1) && !(eflags & VM_FLAG) && ((seg)->access & 8)))       \
         {                                       \
                 x86gpf("Limit check", 0);       \
                 return 1;                       \