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-rw-r--r--miasm/arch/x86/arch.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/miasm/arch/x86/arch.py b/miasm/arch/x86/arch.py
index 4a8af629..e63ce6cf 100644
--- a/miasm/arch/x86/arch.py
+++ b/miasm/arch/x86/arch.py
@@ -3786,6 +3786,7 @@ addop("fincstp", [bs8(0xd9), bs8(0xf7)])
 addop("blsi", [pref_0f38, bs8(0xf3), vex_reg] + rmmod(bs("011"), rm_arg), [vex_reg, rm_arg])
 addop("andn", [pref_0f38, bs8(0xf2), vex_reg] + rmmod(rmreg, rm_arg), [rmreg, vex_reg, rm_arg])
 addop("bextr", [pref_0f38, bs8(0xf7), vex_reg] + rmmod(rmreg, rm_arg), [rmreg, rm_arg, vex_reg])
+addop("blsmsk", [pref_0f38, bs8(0xf3), vex_reg] + rmmod(bs("010"), rm_arg), [vex_reg, rm_arg])
 
 # addop("finit", [bs8(0x9b), bs8(0xdb), bs8(0xe3)])
 addop("fninit", [bs8(0xdb), bs8(0xe3)])