From 50b74dcb2aa50e9d6aab83db02396ba98346b738 Mon Sep 17 00:00:00 2001
From: TomW <TomW@localhost>
Date: Tue, 21 Apr 2015 17:39:04 +0100
Subject: [PATCH] Illegal instruction interrupt caused by disabled FPU has
 correct return address - Turok works again.

---
 src/codegen_ops_x86.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/codegen_ops_x86.h b/src/codegen_ops_x86.h
index 1f02cdf..cf7605f 100644
--- a/src/codegen_ops_x86.h
+++ b/src/codegen_ops_x86.h
@@ -1226,7 +1226,11 @@ static void FP_ENTER()
         addlong((uintptr_t)&cr0);
         addbyte(0xc);
         addbyte(0x74); /*JZ +*/
-        addbyte(7+5+5);
+        addbyte(10+7+5+5);
+        addbyte(0xC7); /*MOVL [oldpc],op_old_pc*/
+        addbyte(0x05);
+        addlong((uintptr_t)&oldpc);
+        addlong(op_old_pc);
         addbyte(0xc7); /*MOV [ESP], 7*/
         addbyte(0x04);
         addbyte(0x24);