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thumb32: Implement BIC (immediate)

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This commit is contained in:
MerryMage 2021-02-18 01:12:52 +00:00
parent 6f3c5dc1d9
commit 3dcc882fbf
3 changed files with 19 additions and 1 deletions
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2
src/frontend/A32/decoder/thumb32.inc
View file

@ -55,7 +55,7 @@
// Data Processing (Modified Immediate)
INST(thumb32_TST_imm, "TST (imm)", "11110v000001nnnn0vvv1111vvvvvvvv")
INST(thumb32_AND_imm, "AND (imm)", "11110v00000Snnnn0vvvddddvvvvvvvv")
//INST(thumb32_BIC_imm, "BIC (imm)", "11110-00001-----0---------------")
INST(thumb32_BIC_imm, "BIC (imm)", "11110v00001Snnnn0vvvddddvvvvvvvv")
//INST(thumb32_MOV_imm, "MOV (imm)", "11110000010-11110---------------")
//INST(thumb32_ORR_imm, "ORR (imm)", "11110-00010-----0---------------")
//INST(thumb32_MVN_imm, "MVN (imm)", "11110000011-11110---------------")

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

@ -39,4 +39,21 @@ bool ThumbTranslatorVisitor::thumb32_AND_imm(Imm<1> i, bool S, Reg n, Imm<3> imm
return true;
}
bool ThumbTranslatorVisitor::thumb32_BIC_imm(Imm<1> i, bool S, Reg n, Imm<3> imm3, Reg d, Imm<8> imm8) {
if (d == Reg::PC || n == Reg::PC) {
return UnpredictableInstruction();
}
const auto imm_carry = ThumbExpandImm_C(i, imm3, imm8, ir.GetCFlag());
const auto result = ir.And(ir.GetRegister(n), ir.Not(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

@ -151,6 +151,7 @@ struct ThumbTranslatorVisitor final {
// thumb32 data processing (modified immediate) instructions
bool thumb32_TST_imm(Imm<1> i, Reg n, Imm<3> imm3, Imm<8> imm8);
bool thumb32_AND_imm(Imm<1> i, bool S, Reg n, Imm<3> imm3, Reg d, Imm<8> imm8);
bool thumb32_BIC_imm(Imm<1> i, bool S, Reg n, Imm<3> imm3, Reg d, Imm<8> imm8);
// thumb32 miscellaneous control instructions
bool thumb32_UDF();