From e0067667f73bcf65bc0bc8636f8e2f5bbc32ea6d Mon Sep 17 00:00:00 2001
From: Yang Liu <liuyang22@iscas.ac.cn>
Date: Thu, 12 Jun 2025 15:18:56 +0800
Subject: [INTERP] Fixed 64/65 67 64bit rex decoding (#2729)

---
 src/emu/x64run6764.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'src')

diff --git a/src/emu/x64run6764.c b/src/emu/x64run6764.c
index e8d22ea9..af83db93 100644
--- a/src/emu/x64run6764.c
+++ b/src/emu/x64run6764.c
@@ -52,6 +52,11 @@ uintptr_t Run6764(x64emu_t *emu, rex_t rex, int rep, int seg, uintptr_t addr)
         opcode = F8;
     }
 
+    while (opcode >= 0x40 && opcode <= 0x4f) {
+        rex.rex = opcode;
+        opcode = F8;
+    }
+
     switch(opcode) {
 
         case 0x89:                      /* MOV FS:Ed, Gd */
-- 
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