From 53dfb7da48348999810679908ed3972eacb8909a Mon Sep 17 00:00:00 2001
From: Aleksandar Andrejevic <aandrejevic@reactos.org>
Date: Wed, 13 Nov 2013 19:20:04 +0000
Subject: [PATCH] [FAST486] LOOP and JECXZ use the ADSIZE attribute, not
 OPSIZE.

svn path=/branches/ntvdm/; revision=60977
---
 lib/fast486/opcodes.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/lib/fast486/opcodes.c b/lib/fast486/opcodes.c
index 518211c762e..de75b50a2ee 100644
--- a/lib/fast486/opcodes.c
+++ b/lib/fast486/opcodes.c
@@ -4929,7 +4929,7 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeLoop)
     ASSERT((Opcode >= 0xE0) && (Opcode <= 0xE2));
 
     NO_LOCK_PREFIX();
-    TOGGLE_OPSIZE(Size);
+    TOGGLE_ADSIZE(Size);
 
     if (Size) Condition = ((--State->GeneralRegs[FAST486_REG_ECX].Long) != 0);
     else Condition = ((--State->GeneralRegs[FAST486_REG_ECX].LowWord) != 0);
@@ -4956,7 +4956,8 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeLoop)
     if (Condition)
     {
         /* Move the instruction pointer */
-        State->InstPtr.Long += Offset;
+        if (Size) State->InstPtr.Long += Offset;
+        else State->InstPtr.LowWord += Offset;
     }
 
     return TRUE;
@@ -4972,7 +4973,7 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeJecxz)
     ASSERT(Opcode == 0xE3);
 
     NO_LOCK_PREFIX();
-    TOGGLE_OPSIZE(Size);
+    TOGGLE_ADSIZE(Size);
 
     if (Size) Condition = (State->GeneralRegs[FAST486_REG_ECX].Long == 0);
     else Condition = (State->GeneralRegs[FAST486_REG_ECX].LowWord == 0);
@@ -4987,7 +4988,8 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeJecxz)
     if (Condition)
     {
         /* Move the instruction pointer */
-        State->InstPtr.Long += Offset;
+        if (Size) State->InstPtr.Long += Offset;
+        else State->InstPtr.LowWord += Offset;
     }
 
     return TRUE;