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-rw-r--r--miasm2/arch/x86/arch.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/miasm2/arch/x86/arch.py b/miasm2/arch/x86/arch.py
index 6725f5bc..55dc653b 100644
--- a/miasm2/arch/x86/arch.py
+++ b/miasm2/arch/x86/arch.py
@@ -3645,6 +3645,8 @@ addop("lgdt", [bs8(0x0f), bs8(0x01)] + rmmod(d2, modrm=mod_mem))
 addop("lidt", [bs8(0x0f), bs8(0x01)] + rmmod(d3, modrm=mod_mem))
 
 addop("lfence", [bs8(0x0f), bs8(0xae), bs8(0xe8)])
+addop("mfence", [bs8(0x0f), bs8(0xae), bs8(0xf0)])
+addop("sfence", [bs8(0x0f), bs8(0xae), bs8(0xf8)])
 
 addop("leave", [bs8(0xc9), stk])