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thumb32: Implement MVN (immediate)

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This commit is contained in:
MerryMage 2021-02-18 20:19:45 +00:00
parent cafa687684
commit 08f046036c
3 changed files with 19 additions and 1 deletions
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2
src/frontend/A32/decoder/thumb32.inc
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@ -58,7 +58,7 @@ INST(thumb32_AND_imm, "AND (imm)", "11110v00000Snnnn0vvvdd
INST(thumb32_BIC_imm, "BIC (imm)", "11110v00001Snnnn0vvvddddvvvvvvvv")
INST(thumb32_MOV_imm, "MOV (imm)", "11110v00010S11110vvvddddvvvvvvvv")
INST(thumb32_ORR_imm, "ORR (imm)", "11110v00010Snnnn0vvvddddvvvvvvvv")
//INST(thumb32_MVN_imm, "MVN (imm)", "11110000011-11110---------------")
INST(thumb32_MVN_imm, "MVN (imm)", "11110v00011S11110vvvddddvvvvvvvv")
//INST(thumb32_ORN_imm, "ORN (imm)", "11110-00011-----0---------------")
//INST(thumb32_TEQ_imm, "TEQ (imm)", "11110-001001----0---1111--------")
//INST(thumb32_EOR_imm, "EOR (imm)", "11110-00100-----0---------------")

17
src/frontend/A32/translate/impl/thumb32_data_processing_modified_immediate.cpp
View file

@ -91,4 +91,21 @@ bool ThumbTranslatorVisitor::thumb32_ORR_imm(Imm<1> i, bool S, Reg n, Imm<3> imm
return true;
}
bool ThumbTranslatorVisitor::thumb32_MVN_imm(Imm<1> i, bool S, Imm<3> imm3, Reg d, Imm<8> imm8) {
if (d == Reg::PC) {
return UnpredictableInstruction();
}
const auto imm_carry = ThumbExpandImm_C(i, imm3, imm8, ir.GetCFlag());
const auto result = ir.Imm32(~imm_carry.imm32);
ir.SetRegister(d, result);
if (S) {
ir.SetNFlag(ir.MostSignificantBit(result));
ir.SetZFlag(ir.IsZero(result));
ir.SetCFlag(imm_carry.carry);
}
return true;
}
} // namespace Dynarmic::A32

1
src/frontend/A32/translate/impl/translate_thumb.h
View file

@ -154,6 +154,7 @@ struct ThumbTranslatorVisitor final {
bool thumb32_BIC_imm(Imm<1> i, bool S, Reg n, Imm<3> imm3, Reg d, Imm<8> imm8);
bool thumb32_MOV_imm(Imm<1> i, bool S, Imm<3> imm3, Reg d, Imm<8> imm8);
bool thumb32_ORR_imm(Imm<1> i, bool S, Reg n, Imm<3> imm3, Reg d, Imm<8> imm8);
bool thumb32_MVN_imm(Imm<1> i, bool S, Imm<3> imm3, Reg d, Imm<8> imm8);
// thumb32 miscellaneous control instructions
bool thumb32_UDF();