diff --git a/src/frontend/A32/decoder/thumb32.inc b/src/frontend/A32/decoder/thumb32.inc index 37e6a6d4..6ba2e3ce 100644 --- a/src/frontend/A32/decoder/thumb32.inc +++ b/src/frontend/A32/decoder/thumb32.inc @@ -62,7 +62,7 @@ INST(thumb32_MVN_imm, "MVN (imm)", "11110v00011S11110vvvdd INST(thumb32_ORN_imm, "ORN (imm)", "11110v00011Snnnn0vvvddddvvvvvvvv") INST(thumb32_TEQ_imm, "TEQ (imm)", "11110v001001nnnn0vvv1111vvvvvvvv") INST(thumb32_EOR_imm, "EOR (imm)", "11110v00100Snnnn0vvvddddvvvvvvvv") -//INST(thumb32_CMN_imm, "CMN (imm)", "11110-010001----0---1111--------") +INST(thumb32_CMN_imm, "CMN (imm)", "11110v010001nnnn0vvv1111vvvvvvvv") //INST(thumb32_ADD_imm_1, "ADD (imm)", "11110-01000-----0---------------") //INST(thumb32_ADC_imm, "ADC (imm)", "11110-01010-----0---------------") //INST(thumb32_SBC_imm, "SBC (imm)", "11110-01011-----0---------------") diff --git a/src/frontend/A32/translate/impl/thumb32_data_processing_modified_immediate.cpp b/src/frontend/A32/translate/impl/thumb32_data_processing_modified_immediate.cpp index 029f9249..361cd858 100644 --- a/src/frontend/A32/translate/impl/thumb32_data_processing_modified_immediate.cpp +++ b/src/frontend/A32/translate/impl/thumb32_data_processing_modified_immediate.cpp @@ -158,4 +158,19 @@ bool ThumbTranslatorVisitor::thumb32_EOR_imm(Imm<1> i, bool S, Reg n, Imm<3> imm return true; } +bool ThumbTranslatorVisitor::thumb32_CMN_imm(Imm<1> i, Reg n, Imm<3> imm3, Imm<8> imm8) { + if (n == Reg::PC) { + return UnpredictableInstruction(); + } + + const auto imm32 = ThumbExpandImm(i, imm3, imm8); + const auto result = ir.AddWithCarry(ir.GetRegister(n), ir.Imm32(imm32), ir.Imm1(0)); + + ir.SetNFlag(ir.MostSignificantBit(result.result)); + ir.SetZFlag(ir.IsZero(result.result)); + ir.SetCFlag(result.carry); + ir.SetVFlag(result.overflow); + return true; +} + } // namespace Dynarmic::A32 diff --git a/src/frontend/A32/translate/impl/translate_thumb.h b/src/frontend/A32/translate/impl/translate_thumb.h index 88fe2563..ccf6b91e 100644 --- a/src/frontend/A32/translate/impl/translate_thumb.h +++ b/src/frontend/A32/translate/impl/translate_thumb.h @@ -158,6 +158,7 @@ struct ThumbTranslatorVisitor final { bool thumb32_ORN_imm(Imm<1> i, bool S, Reg n, Imm<3> imm3, Reg d, Imm<8> imm8); bool thumb32_TEQ_imm(Imm<1> i, Reg n, Imm<3> imm3, Imm<8> imm8); bool thumb32_EOR_imm(Imm<1> i, bool S, Reg n, Imm<3> imm3, Reg d, Imm<8> imm8); + bool thumb32_CMN_imm(Imm<1> i, Reg n, Imm<3> imm3, Imm<8> imm8); // thumb32 data processing (plain binary immediate) instructions. bool thumb32_MOVT(Imm<1> imm1, Imm<4> imm4, Imm<3> imm3, Reg d, Imm<8> imm8);