1 files changed, 21 insertions, 1 deletions
diff --git a/src/arch/x86/isa/insts/simd128/floating_point/arithmetic/horizontal_addition.py b/src/arch/x86/isa/insts/simd128/floating_point/arithmetic/horizontal_addition.py
index 8b307d3da..adf7650b9 100644
--- a/src/arch/x86/isa/insts/simd128/floating_point/arithmetic/horizontal_addition.py
+++ b/src/arch/x86/isa/insts/simd128/floating_point/arithmetic/horizontal_addition.py
@@ -55,5 +55,25 @@
 
 microcode = '''
 # HADDPS
-# HADDPD
+
+def macroop HADDPD_XMM_XMM {
+    maddf ufp1, xmmh , xmml, size=8, ext=1
+    maddf xmmh, xmmlm, xmmhm, size=8, ext=1
+    movfp xmml, ufp1
+};
+
+def macroop HADDPD_XMM_M {
+    ldfp ufp1, seg, sib, disp, dataSize=8
+    ldfp ufp2, seg, sib, "DISPLACEMENT+8", dataSize=8
+    maddf xmml, xmmh, xmml, size=8, ext=1
+    maddf xmmh, ufp1, ufp2, size=8, ext=1
+};
+
+def macroop HADDPD_XMM_P {
+    rdip t7
+    ldfp ufp1, seg, riprel, disp, dataSize=8
+    ldfp ufp2, seg, riprel, "DISPLACEMENT+8", dataSize=8
+    maddf xmml, xmmh, xmml, size=8, ext=1
+    maddf xmmh, ufp1, ufp2, size=8, ext=1
+};
 '''