A64: Implement ADD_shifted

src/frontend/A64/translate/impl/data_processing_addsub.cpp

@@ -0,0 +1,31 @@
+/* This file is part of the dynarmic project.
+ * Copyright (c) 2018 MerryMage
+ * This software may be used and distributed according to the terms of the GNU
+ * General Public License version 2 or any later version.
+ */
+
+#include "frontend/A64/translate/impl/impl.h"
+
+namespace Dynarmic {
+namespace A64 {
+
+bool TranslatorVisitor::ADD_shift(bool sf, Imm<2> shift, Reg Rm, Imm<6> imm6, Reg Rn, Reg Rd) {
+    size_t datasize = sf ? 64 : 32;
+
+    if (shift == 0b11) return ReservedValue();
+    if (!sf && imm6.Bit<5>()) return ReservedValue();
+
+    u8 shift_amount = imm6.ZeroExtend<u8>();
+
+    auto operand1 = X(datasize, Rn);
+    auto operand2 = ShiftReg(datasize, Rm, shift, ir.Imm8(shift_amount));
+
+    auto result = ir.Add(operand1, operand2);
+
+    X(datasize, Rd, result);
+
+    return true;
+}
+
+} // namespace A64
+} // namespace Dynarmic