1 files changed, 18 insertions, 1 deletions
diff --git a/miasm/arch/x86/arch.py b/miasm/arch/x86/arch.py
index a82fac02..3053301a 100644
--- a/miasm/arch/x86/arch.py
+++ b/miasm/arch/x86/arch.py
@@ -3212,6 +3212,14 @@ class bs_mem(object):
         self.value = v
         return v != 0b11
 
+class bs_reg(object):
+    def encode(self):
+        return self.value == 0b11
+
+    def decode(self, v):
+        self.value = v
+        return v == 0b11
+
 d_imm64 = bs(l=0, fname="imm64")
 
 d_eax = bs(l=0, cls=(bs_eax, ), fname='eax')
@@ -3239,6 +3247,7 @@ msegoff = bs(l=16, cls=(bs_msegoff,), fname="mseg")
 movoff = bs(l=0, cls=(bs_movoff,), fname="off")
 mod = bs(l=2, fname="mod")
 mod_mem = bs(l=2, cls=(bs_mem,), fname="mod")
+mod_reg = bs(l=2, cls=(bs_reg,), fname="mod")
 
 rmreg = bs(l=3, cls=(x86_rm_reg, ), order =1, fname = "reg")
 reg = bs(l=3, cls=(x86_reg, ), order =1, fname = "reg")
@@ -3721,7 +3730,7 @@ addop("lgs", [bs8(0x0f), bs8(0xb5)] + rmmod(rmreg, rm_arg_x=rm_mem, modrm=mod_me
 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("lfence", [bs8(0x0f), bs8(0xae), bs8(0xe8), no_xmm_pref])
 addop("mfence", [bs8(0x0f), bs8(0xae), bs8(0xf0)])
 addop("sfence", [bs8(0x0f), bs8(0xae), bs8(0xf8)])
 
@@ -4620,6 +4629,14 @@ addop("maskmovdqu", [bs8(0x0f), bs8(0xf7), pref_66] +
 
 addop("emms", [bs8(0x0f), bs8(0x77)])
 
+addop("incssp", [pref_f3, bs8(0x0f), bs8(0xae)] + rmmod(d5))
+addop("rdssp", [pref_f3, bs8(0x0f), bs8(0x1e)] + rmmod(d1, modrm=mod_reg))
+addop("saveprevssp", [pref_f3, bs8(0x0f), bs8(0x01), bs8(0xea)])
+addop("rstorssp", [pref_f3, bs8(0x0f), bs8(0x01)] + rmmod(d5, rm_arg_xmm, modrm=mod_mem))
+addop("wrss", [bs8(0x0f), bs8(0x38), bs8(0xf6)] + rmmod(rmreg, rm_arg), [rm_arg, rmreg])
+addop("wruss", [pref_66, bs8(0x0f), bs8(0x38), bs8(0xf5)] + rmmod(rmreg, rm_arg), [rm_arg, rmreg])
+addop("setssbsy", [pref_f3, bs8(0x0f), bs8(0x01), bs8(0xe8)])
+addop("clrssbsy", [pref_f3, bs8(0x0f), bs8(0xae)] + rmmod(d6, rm_arg_xmm))
 addop("endbr64", [pref_f3, bs8(0x0f), bs8(0x1e), bs8(0xfa)])
 addop("endbr32", [pref_f3, bs8(0x0f), bs8(0x1e), bs8(0xfb)])