From: Mike Pall <mike>
Date: Wed, 8 Dec 2010 00:57:50 +0000 (+0100)
Subject: Fix x64 code generation for A16+REX prefixed instructions.
X-Git-Tag: v2.0.0-beta6~165
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d4d95ee2da57ea2c6f2fa68700b51f8f8251b83d;p=thirdparty%2FLuaJIT.git

Fix x64 code generation for A16+REX prefixed instructions.
---

diff --git a/src/lj_asm.c b/src/lj_asm.c
index 944b9b78..6231f134 100644
--- a/src/lj_asm.c
+++ b/src/lj_asm.c
@@ -155,6 +155,7 @@ static LJ_AINLINE MCode *emit_op(x86Op xo, Reg rr, Reg rb, Reg rx,
     if (rex != 0x40) {
       rex |= (rr >> 16);
       if (n == -4) { *p = (MCode)rex; rex = (MCode)(xo >> 8); }
+      else if ((xo & 0xffffff) == 0x6600fd) { *p = (MCode)rex; rex = 0x66; }
       *--p = (MCode)rex;
     }
   }