From 7341cf2a2068be10be5c6bc229272e6804856e21 Mon Sep 17 00:00:00 2001
From: TomW <TomW@localhost>
Date: Thu, 15 Oct 2015 19:40:53 +0100
Subject: [PATCH] Disabled opcode 0x86 (XCHG byte) on x86-64 recompiler.

---
 src/codegen_ops_xchg.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/codegen_ops_xchg.h b/src/codegen_ops_xchg.h
index 7762266..25ff4c7 100644
--- a/src/codegen_ops_xchg.h
+++ b/src/codegen_ops_xchg.h
@@ -44,6 +44,9 @@ OP_XCHG_EAX_(EBP)
 
 static uint32_t ropXCHG_b(uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uint32_t op_pc, codeblock_t *block)
 {
+#ifdef __amd64__
+        return 0;
+#else
         int src_reg, dst_reg, temp_reg;
 
         if ((fetchdat & 0xc0) != 0xc0)
@@ -56,6 +59,7 @@ static uint32_t ropXCHG_b(uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uin
         STORE_REG_TARGET_B_RELEASE(temp_reg, fetchdat & 7);
         
         return op_pc + 1;
+#endif
 }
 static uint32_t ropXCHG_w(uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uint32_t op_pc, codeblock_t *block)
 {