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-rw-r--r--src/arch/x86/isa/decoder/two_byte_opcodes.isa2
-rw-r--r--src/arch/x86/isa/insts/simd128/floating_point/arithmetic/simultaneous_addition_and_subtraction.py21
2 files changed, 21 insertions, 2 deletions
diff --git a/src/arch/x86/isa/decoder/two_byte_opcodes.isa b/src/arch/x86/isa/decoder/two_byte_opcodes.isa
index e1b20feb1..dfc328c4b 100644
--- a/src/arch/x86/isa/decoder/two_byte_opcodes.isa
+++ b/src/arch/x86/isa/decoder/two_byte_opcodes.isa
@@ -903,7 +903,7 @@
}
// operand size (0x66)
0x1: decode OPCODE_OP_BOTTOM3 {
- 0x0: WarnUnimpl::addsubpd_Vo_Wo();
+ 0x0: ADDSUBPD(Vo,Wo);
0x1: PSRLW(Vo,Wo);
0x2: PSRLD(Vo,Wo);
0x3: PSRLQ(Vo,Wo);
diff --git a/src/arch/x86/isa/insts/simd128/floating_point/arithmetic/simultaneous_addition_and_subtraction.py b/src/arch/x86/isa/insts/simd128/floating_point/arithmetic/simultaneous_addition_and_subtraction.py
index 2e9aebfdc..00b191eca 100644
--- a/src/arch/x86/isa/insts/simd128/floating_point/arithmetic/simultaneous_addition_and_subtraction.py
+++ b/src/arch/x86/isa/insts/simd128/floating_point/arithmetic/simultaneous_addition_and_subtraction.py
@@ -37,5 +37,24 @@
microcode = '''
# ADDSUBPS
-# ADDSUBPD
+
+def macroop ADDSUBPD_XMM_XMM {
+ msubf xmml, xmml, xmmlm, size=8, ext=Scalar
+ maddf xmmh, xmmh, xmmhm, size=8, ext=Scalar
+};
+
+def macroop ADDSUBPD_XMM_M {
+ ldfp ufp1, seg, sib, disp, dataSize=8
+ ldfp ufp2, seg, sib, "DISPLACEMENT+8", dataSize=8
+ msubf xmmlm, xmml, ufp1, size=8, ext=0
+ maddf xmmhm, xmmh, ufp2, size=8, ext=0
+};
+
+def macroop ADDSUBPD_XMM_P {
+ rdip t7
+ ldfp ufp1, seg, sib, disp, dataSize=8
+ ldfp ufp2, seg, sib, "DISPLACEMENT+8", dataSize=8
+ msubf xmmlm, xmml, ufp1, size=8, ext=0
+ maddf xmmhm, xmmh, ufp2, size=8, ext=0
+};
'''