diff --git a/src/ia32/disasm-ia32.cc b/src/ia32/disasm-ia32.cc
index 5a43280..b11ff97 100644
--- a/src/ia32/disasm-ia32.cc
+++ b/src/ia32/disasm-ia32.cc
@@ -28,32 +28,30 @@
   OperandOrder op_order_;
 };
 
-
 static const ByteMnemonic two_operands_instr[] = {
-  {0x01, "add", OPER_REG_OP_ORDER},
-  {0x03, "add", REG_OPER_OP_ORDER},
-  {0x09, "or", OPER_REG_OP_ORDER},
-  {0x0B, "or", REG_OPER_OP_ORDER},
-  {0x1B, "sbb", REG_OPER_OP_ORDER},
-  {0x21, "and", OPER_REG_OP_ORDER},
-  {0x23, "and", REG_OPER_OP_ORDER},
-  {0x29, "sub", OPER_REG_OP_ORDER},
-  {0x2A, "subb", REG_OPER_OP_ORDER},
-  {0x2B, "sub", REG_OPER_OP_ORDER},
-  {0x31, "xor", OPER_REG_OP_ORDER},
-  {0x33, "xor", REG_OPER_OP_ORDER},
-  {0x38, "cmpb", OPER_REG_OP_ORDER},
-  {0x3A, "cmpb", REG_OPER_OP_ORDER},
-  {0x3B, "cmp", REG_OPER_OP_ORDER},
-  {0x84, "test_b", REG_OPER_OP_ORDER},
-  {0x85, "test", REG_OPER_OP_ORDER},
-  {0x87, "xchg", REG_OPER_OP_ORDER},
-  {0x8A, "mov_b", REG_OPER_OP_ORDER},
-  {0x8B, "mov", REG_OPER_OP_ORDER},
-  {0x8D, "lea", REG_OPER_OP_ORDER},
-  {-1, "", UNSET_OP_ORDER}
-};
-
+    {0x01, "add", OPER_REG_OP_ORDER},
+    {0x03, "add", REG_OPER_OP_ORDER},
+    {0x09, "or", OPER_REG_OP_ORDER},
+    {0x0B, "or", REG_OPER_OP_ORDER},
+    {0x1B, "sbb", REG_OPER_OP_ORDER},
+    {0x21, "and", OPER_REG_OP_ORDER},
+    {0x23, "and", REG_OPER_OP_ORDER},
+    {0x29, "sub", OPER_REG_OP_ORDER},
+    {0x2A, "subb", REG_OPER_OP_ORDER},
+    {0x2B, "sub", REG_OPER_OP_ORDER},
+    {0x31, "xor", OPER_REG_OP_ORDER},
+    {0x33, "xor", REG_OPER_OP_ORDER},
+    {0x38, "cmpb", OPER_REG_OP_ORDER},
+    {0x39, "cmp", OPER_REG_OP_ORDER},
+    {0x3A, "cmpb", REG_OPER_OP_ORDER},
+    {0x3B, "cmp", REG_OPER_OP_ORDER},
+    {0x84, "test_b", REG_OPER_OP_ORDER},
+    {0x85, "test", REG_OPER_OP_ORDER},
+    {0x87, "xchg", REG_OPER_OP_ORDER},
+    {0x8A, "mov_b", REG_OPER_OP_ORDER},
+    {0x8B, "mov", REG_OPER_OP_ORDER},
+    {0x8D, "lea", REG_OPER_OP_ORDER},
+    {-1, "", UNSET_OP_ORDER}};
 
 static const ByteMnemonic zero_operands_instr[] = {
   {0xC3, "ret", UNSET_OP_ORDER},
@@ -1630,7 +1628,15 @@
             }
           } else if (*data == 0x3A) {
             data++;
-            if (*data == 0x0B) {
+            if (*data == 0x0A) {
+              data++;
+              int mod, regop, rm;
+              get_modrm(*data, &mod, &regop, &rm);
+              int8_t imm8 = static_cast<int8_t>(data[1]);
+              AppendToBuffer("roundss %s,%s,%d", NameOfXMMRegister(regop),
+                             NameOfXMMRegister(rm), static_cast<int>(imm8));
+              data += 2;
+            } else if (*data == 0x0B) {
               data++;
               int mod, regop, rm;
               get_modrm(*data, &mod, &regop, &rm);