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-rw-r--r--miasm2/arch/x86/arch.py2
-rw-r--r--test/arch/x86/arch.py5
2 files changed, 7 insertions, 0 deletions
diff --git a/miasm2/arch/x86/arch.py b/miasm2/arch/x86/arch.py
index d12c9875..4e385a72 100644
--- a/miasm2/arch/x86/arch.py
+++ b/miasm2/arch/x86/arch.py
@@ -3509,6 +3509,8 @@ addop("fxrstor", [bs8(0x0f), bs8(0xae)]
       + rmmod(d1, rm_arg_m80))  # XXX TODO m512
 addop("fxsave", [bs8(0x0f), bs8(0xae)]
       + rmmod(d0, rm_arg_m80))  # XXX TODO m512
+addop("stmxcsr", [bs8(0x0f), bs8(0xae)] + rmmod(d3))
+addop("ldmxcsr", [bs8(0x0f), bs8(0xae)] + rmmod(d2))
 
 addop("fxtract", [bs8(0xd9), bs8(0xf4)])
 addop("fyl2x", [bs8(0xd9), bs8(0xf1)])
diff --git a/test/arch/x86/arch.py b/test/arch/x86/arch.py
index 5ee65ee5..7ec7b8c8 100644
--- a/test/arch/x86/arch.py
+++ b/test/arch/x86/arch.py
@@ -1512,6 +1512,11 @@ reg_tests = [
     (m64, "00000000    SYSRET",
      "0f07"),
 
+    (m32, "00000000    STMXCSR    DWORD PTR [EAX]",
+     "0fAE18"),
+    (m32, "00000000    LDMXCSR    DWORD PTR [EAX]",
+     "0fAE10"),
+
 
 
     (m32, "00000000    TEST       AL, 0x11",