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A32: Implement ASIMD VHSUB

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This commit is contained in:
MerryMage 2020-05-28 21:53:50 +01:00
parent 205e6c5a56
commit 3a50d444dc
3 changed files with 25 additions and 1 deletions
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2
src/frontend/A32/decoder/asimd.inc
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@ -10,7 +10,7 @@ INST(asimd_VEOR_reg, "VEOR (register)", "111100110D00nnnndddd000
INST(asimd_VBSL, "VBSL", "111100110D01nnnndddd0001NQM1mmmm") // ASIMD
INST(asimd_VBIT, "VBIT", "111100110D10nnnndddd0001NQM1mmmm") // ASIMD
INST(asimd_VBIF, "VBIF", "111100110D11nnnndddd0001NQM1mmmm") // ASIMD
//INST(asimd_VHADD, "VHADD", "1111001U0-CC--------0010---0----") // ASIMD
INST(asimd_VHSUB, "VHSUB", "1111001U0Dzznnnndddd0010NQM0mmmm") // ASIMD
//INST(asimd_VQSUB, "VQSUB", "1111001U0-CC--------0010---1----") // ASIMD
//INST(asimd_VCGT_reg, "VCGT (register)", "1111001U0-CC--------0011---0----") // ASIMD
//INST(asimd_VCGE_reg, "VCGE (register)", "1111001U0-CC--------0011---1----") // ASIMD

23
src/frontend/A32/translate/impl/asimd_three_same.cpp
View file

@ -127,4 +127,27 @@ bool ArmTranslatorVisitor::asimd_VBIF(bool D, size_t Vn, size_t Vd, bool N, bool
return ir.VectorOr(ir.VectorAnd(reg_d, reg_m), ir.VectorAnd(reg_n, ir.VectorNot(reg_m)));
});
}
bool ArmTranslatorVisitor::asimd_VHSUB(bool U, bool D, size_t sz, size_t Vn, size_t Vd, bool N, bool Q, bool M, size_t Vm) {
if (Q && (Common::Bit<0>(Vd) || Common::Bit<0>(Vn) || Common::Bit<0>(Vm))) {
return UndefinedInstruction();
}
if (sz == 0b11) {
return UndefinedInstruction();
}
const size_t esize = 8 << sz;
const auto d = ToVector(Q, Vd, D);
const auto m = ToVector(Q, Vm, M);
const auto n = ToVector(Q, Vn, N);
const IR::U128 reg_n = ir.GetVector(n);
const IR::U128 reg_m = ir.GetVector(m);
const IR::U128 result = U ? ir.VectorHalvingSubUnsigned(esize, reg_n, reg_m) : ir.VectorHalvingSubSigned(esize, reg_n, reg_m);
ir.SetVector(d, result);
return true;
}
} // namespace Dynarmic::A32

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

@ -444,6 +444,7 @@ struct ArmTranslatorVisitor final {
bool asimd_VBSL(bool D, size_t Vn, size_t Vd, bool N, bool Q, bool M, size_t Vm);
bool asimd_VBIT(bool D, size_t Vn, size_t Vd, bool N, bool Q, bool M, size_t Vm);
bool asimd_VBIF(bool D, size_t Vn, size_t Vd, bool N, bool Q, bool M, size_t Vm);
bool asimd_VHSUB(bool U, bool D, size_t sz, size_t Vn, size_t Vd, bool N, bool Q, bool M, size_t Vm);
// Advanced SIMD two register, miscellaneous
bool asimd_VSWP(bool D, size_t Vd, bool Q, bool M, size_t Vm);