A32/translate_thumb: Split off implementation into thumb16 and thumb32

src/frontend/A32/translate/impl/thumb32.cpp

@@ -0,0 +1,43 @@
+/* This file is part of the dynarmic project.
+ * Copyright (c) 2016 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 "translate_thumb.h"
+
+namespace Dynarmic::A32 {
+
+// BL <label>
+bool ThumbTranslatorVisitor::thumb32_BL_imm(Imm<11> hi, Imm<11> lo) {
+    ir.PushRSB(ir.current_location.AdvancePC(4));
+    ir.SetRegister(Reg::LR, ir.Imm32((ir.current_location.PC() + 4) | 1));
+
+    const s32 imm32 = static_cast<s32>((concatenate(hi, lo).SignExtend<u32>() << 1) + 4);
+    const auto new_location = ir.current_location.AdvancePC(imm32);
+    ir.SetTerm(IR::Term::LinkBlock{new_location});
+    return false;
+}
+
+// BLX <label>
+bool ThumbTranslatorVisitor::thumb32_BLX_imm(Imm<11> hi, Imm<11> lo) {
+    if (lo.Bit<0>()) {
+        return UnpredictableInstruction();
+    }
+
+    ir.PushRSB(ir.current_location.AdvancePC(4));
+    ir.SetRegister(Reg::LR, ir.Imm32((ir.current_location.PC() + 4) | 1));
+
+    const s32 imm32 = static_cast<s32>(concatenate(hi, lo).SignExtend<u32>() << 1);
+    const auto new_location = ir.current_location
+                                .SetPC(ir.AlignPC(4) + imm32)
+                                .SetTFlag(false);
+    ir.SetTerm(IR::Term::LinkBlock{new_location});
+    return false;
+}
+
+bool ThumbTranslatorVisitor::thumb32_UDF() {
+    return thumb16_UDF();
+}
+
+} // namespace Dynarmic::A32