X86: Implement the movsd instruction.

--HG--
extra : convert_revision : a5a73e0ddd39144d2aeeb9cc6a299516752fd4c2

src/arch/x86/isa/decoder/two_byte_opcodes.isa

@@ -126,8 +126,8 @@
                 }
                 // repne (0xF2)
                 0x8: decode OPCODE_OP_BOTTOM3 {
-                    0x0: movsd_Vq_Wq();
-                    0x1: movsd_Wq_Vq();
+                    0x0: Inst::MOVSD(Vq,Wq);
+                    0x1: Inst::MOVSD(Wq,Vq);
                     0x2: movddup_Vo_Wq();
                     default: Inst::UD2();
                 }

src/arch/x86/isa/insts/sse/move.py

@@ -75,4 +75,28 @@ def macroop MOVLPD_P_R {
 def macroop MOVLPD_R_R {
     movfp xmml, xmml, xmmlm, dataSize=8
 };
+
+def macroop MOVSD_R_M {
+    # Zero xmmh
+    ldfp xmml, seg, sib, disp, dataSize=8
+};
+
+def macroop MOVSD_R_P {
+    rdip t7
+    # Zero xmmh
+    ldfp xmml, seg, riprel, disp, dataSize=8
+};
+
+def macroop MOVSD_M_R {
+    stfp xmml, seg, sib, disp, dataSize=8
+};
+
+def macroop MOVSD_P_R {
+    rdip t7
+    stfp xmml, seg, riprel, disp, dataSize=8
+};
+
+def macroop MOVSD_R_R {
+    movfp xmml, xmml, xmmlm, dataSize=8
+};
 '''