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A32: Implement ASIMD VABDL

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Lioncash 2020-06-21 14:18:57 -04:00 committed by merry
parent db85e7ced5
commit 98581839ca
3 changed files with 41 additions and 1 deletions
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2
src/frontend/A32/decoder/asimd.inc
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@ -20,7 +20,7 @@ INST(asimd_VRSHL, "VRSHL", "1111001U0Dzznnnndddd010
//INST(asimd_VQRSHL, "VQRSHL", "1111001U0-CC--------0101---1----") // ASIMD
INST(asimd_VMAX, "VMAX/VMIN", "1111001U0Dzznnnnmmmm0110NQMommmm") // ASIMD
INST(asimd_VABD, "VABD", "1111001U0Dzznnnndddd0111NQM0mmmm") // ASIMD
//INST(asimd_VABDL, "VABDL", "1111001U1Dzznnnndddd0111N0M0mmmm") // ASIMD
INST(asimd_VABDL, "VABDL", "1111001U1Dzznnnndddd0111N0M0mmmm") // ASIMD
INST(asimd_VABA, "VABA", "1111001U0Dzznnnndddd0111NQM1mmmm") // ASIMD
//INST(asimd_VABAL, "VABAL", "1111001U1Dzznnnndddd0101N0M1mmmm") // ASIMD
INST(asimd_VADD_int, "VADD (integer)", "111100100Dzznnnndddd1000NQM0mmmm") // ASIMD

39
src/frontend/A32/translate/impl/asimd_three_same.cpp
View file

@ -176,6 +176,41 @@ bool AbsoluteDifference(ArmTranslatorVisitor& v, bool U, bool D, size_t sz, size
v.ir.SetVector(d, result);
return true;
}
bool AbsoluteDifferenceLong(ArmTranslatorVisitor& v, bool U, bool D, size_t sz, size_t Vn, size_t Vd, bool N, bool M, size_t Vm,
AccumulateBehavior accumulate) {
if (sz == 0b11) {
return v.UndefinedInstruction();
}
if (Common::Bit<0>(Vd)) {
return v.UndefinedInstruction();
}
const size_t esize = 8U << sz;
const auto d = ToVector(true, Vd, D);
const auto m = ToVector(false, Vm, M);
const auto n = ToVector(false, Vn, N);
const auto reg_m = v.ir.GetVector(m);
const auto reg_n = v.ir.GetVector(n);
const auto operand_m = v.ir.VectorZeroExtend(esize, v.ir.ZeroExtendToQuad(v.ir.VectorGetElement(64, reg_m, 0)));
const auto operand_n = v.ir.VectorZeroExtend(esize, v.ir.ZeroExtendToQuad(v.ir.VectorGetElement(64, reg_n, 0)));
const auto result = [&] {
const auto absdiff = U ? v.ir.VectorUnsignedAbsoluteDifference(esize, operand_m, operand_n)
: v.ir.VectorSignedAbsoluteDifference(esize, operand_m, operand_n);
if (accumulate == AccumulateBehavior::Accumulate) {
const auto reg_d = v.ir.GetVector(d);
return v.ir.VectorAdd(2 * esize, reg_d, absdiff);
}
return absdiff;
}();
v.ir.SetVector(d, result);
return true;
}
} // Anonymous namespace
bool ArmTranslatorVisitor::asimd_VHADD(bool U, bool D, size_t sz, size_t Vn, size_t Vd, bool N, bool Q, bool M, size_t Vm) {
@ -348,6 +383,10 @@ bool ArmTranslatorVisitor::asimd_VABD(bool U, bool D, size_t sz, size_t Vn, size
return AbsoluteDifference(*this, U, D, sz, Vn, Vd, N, Q, M, Vm, AccumulateBehavior::None);
}
bool ArmTranslatorVisitor::asimd_VABDL(bool U, bool D, size_t sz, size_t Vn, size_t Vd, bool N, bool M, size_t Vm) {
return AbsoluteDifferenceLong(*this, U, D, sz, Vn, Vd, N, M, Vm, AccumulateBehavior::None);
}
bool ArmTranslatorVisitor::asimd_VABA(bool U, bool D, size_t sz, size_t Vn, size_t Vd, bool N, bool Q, bool M, size_t Vm) {
return AbsoluteDifference(*this, U, D, sz, Vn, Vd, N, Q, M, Vm, AccumulateBehavior::Accumulate);
}

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

@ -465,6 +465,7 @@ struct ArmTranslatorVisitor final {
bool asimd_VCGT_reg(bool U, bool D, size_t sz, size_t Vn, size_t Vd, bool N, bool Q, bool M, size_t Vm);
bool asimd_VCGE_reg(bool U, bool D, size_t sz, size_t Vn, size_t Vd, bool N, bool Q, bool M, size_t Vm);
bool asimd_VABD(bool U, bool D, size_t sz, size_t Vn, size_t Vd, bool N, bool Q, bool M, size_t Vm);
bool asimd_VABDL(bool U, bool D, size_t sz, size_t Vn, size_t Vd, bool N, bool M, size_t Vm);
bool asimd_VABA(bool U, bool D, size_t sz, size_t Vn, size_t Vd, bool N, bool Q, bool M, size_t Vm);
bool asimd_VADD_int(bool D, size_t sz, size_t Vn, size_t Vd, bool N, bool Q, bool M, size_t Vm);
bool asimd_VSUB_int(bool D, size_t sz, size_t Vn, size_t Vd, bool N, bool Q, bool M, size_t Vm);