A32: Implement ASIMD VSHLL

src/frontend/A32/decoder/asimd.inc

@@ -93,7 +93,7 @@ INST(asimd_VQSHRUN,         "VQSHRUN",                  "111100111Diiiiiidddd100
 INST(asimd_VQRSHRUN,        "VQRSHRUN",                 "111100111Diiiiiidddd100001M1mmmm") // ASIMD
 INST(asimd_VQSHRN,          "VQSHRN",                   "1111001U1Diiiiiidddd100100M1mmmm") // ASIMD
 INST(asimd_VQRSHRN,         "VQRSHRN",                  "1111001U1Diiiiiidddd100101M1mmmm") // ASIMD
-//INST(asimd_SHLL,            "SHLL",                     "1111001U1-vvv-------101000-1----") // ASIMD
+INST(asimd_VSHLL,           "VSHLL",                    "1111001U1Diiiiiidddd101000M1mmmm") // ASIMD
 INST(asimd_VCVT_fixed,      "VCVT (fixed-point)",       "1111001U1Diiiiiidddd111o0QM1mmmm") // ASIMD
 
 // Two registers, miscellaneous
@@ -124,7 +124,7 @@ INST(asimd_VZIP,            "VZIP",                     "111100111D11zz10dddd000
 INST(asimd_VMOVN,           "VMOVN",                    "111100111D11zz10dddd001000M0mmmm") // ASIMD
 INST(asimd_VQMOVUN,         "VQMOVUN",                  "111100111D11zz10dddd001001M0mmmm") // ASIMD
 INST(asimd_VQMOVN,          "VQMOVN",                   "111100111D11zz10dddd00101oM0mmmm") // ASIMD
-//INST(asimd_VSHLL_max,       "VSHLL_max",                "111100111-11--10----001100-0----") // ASIMD
+INST(asimd_VSHLL_max,       "VSHLL_max",                "111100111D11zz10dddd001100M0mmmm") // ASIMD
 //INST(asimd_VCVT_half,       "VCVT (half-precision)",    "111100111-11--10----011x00-0----") // ASIMD
 INST(asimd_VRECPE,          "VRECPE",                   "111100111D11zz11dddd010F0QM0mmmm") // ASIMD
 INST(asimd_VRSQRTE,         "VRSQRTE",                  "111100111D11zz11dddd010F1QM0mmmm") // ASIMD

src/frontend/A32/translate/impl/asimd_two_regs_misc.cpp

@@ -595,6 +595,21 @@ bool ArmTranslatorVisitor::asimd_VQMOVN(bool D, size_t sz, size_t Vd, bool op, b
     return true;
 }
 
+bool ArmTranslatorVisitor::asimd_VSHLL_max(bool D, size_t sz, size_t Vd, bool M, size_t Vm) {
+    if (sz == 0b11 || Common::Bit<0>(Vd)) {
+        return UndefinedInstruction();
+    }
+    const size_t esize = 8U << sz;
+    const auto d = ToVector(true, Vd, D);
+    const auto m = ToVector(false, Vm, M);
+
+    const auto reg_m = ir.GetVector(m);
+    const auto result = ir.VectorLogicalShiftLeft(2 * esize, ir.VectorZeroExtend(esize, reg_m), static_cast<u8>(esize));
+
+    ir.SetVector(d, result);
+    return true;
+}
+
 bool ArmTranslatorVisitor::asimd_VRECPE(bool D, size_t sz, size_t Vd, bool F, bool Q, bool M, size_t Vm) {
     if (Q && (Common::Bit<0>(Vd) || Common::Bit<0>(Vm))) {
         return UndefinedInstruction();

src/frontend/A32/translate/impl/asimd_two_regs_shift.cpp

@@ -306,6 +306,26 @@ bool ArmTranslatorVisitor::asimd_VQRSHRN(bool U, bool D, size_t imm6, size_t Vd,
                                Rounding::Round, U ? Narrowing::SaturateToUnsigned : Narrowing::SaturateToSigned, U ? Signedness::Unsigned : Signedness::Signed);
 }
 
+bool ArmTranslatorVisitor::asimd_VSHLL(bool U, bool D, size_t imm6, size_t Vd, bool M, size_t Vm) {
+    ASSERT_MSG((Common::Bits<3, 5>(imm6) != 0), "Decode error");
+
+    if (Common::Bit<0>(Vd)) {
+        return UndefinedInstruction();
+    }
+
+    const auto [esize, shift_amount] = ElementSizeAndShiftAmount(false, false, imm6);
+
+    const auto d = ToVector(true, Vd, D);
+    const auto m = ToVector(false, Vm, M);
+
+    const auto reg_m = ir.GetVector(m);
+    const auto ext_vec = U ? ir.VectorZeroExtend(esize, reg_m) : ir.VectorSignExtend(esize, reg_m);
+    const auto result = ir.VectorLogicalShiftLeft(esize * 2, ext_vec, static_cast<u8>(shift_amount));
+
+    ir.SetVector(d, result);
+    return true;
+}
+
 bool ArmTranslatorVisitor::asimd_VCVT_fixed(bool U, bool D, size_t imm6, size_t Vd, bool to_fixed, bool Q, bool M, size_t Vm) {
     if (Q && (Common::Bit<0>(Vd) || Common::Bit<0>(Vm))) {
         return UndefinedInstruction();

src/frontend/A32/translate/impl/translate_arm.h

@@ -530,6 +530,7 @@ struct ArmTranslatorVisitor final {
     bool asimd_VQRSHRUN(bool D, size_t imm6, size_t Vd, bool M, size_t Vm);
     bool asimd_VQSHRN(bool U, bool D, size_t imm6, size_t Vd, bool M, size_t Vm);
     bool asimd_VQRSHRN(bool U, bool D, size_t imm6, size_t Vd, bool M, size_t Vm);
+    bool asimd_VSHLL(bool U, bool D, size_t imm6, size_t Vd, bool M, size_t Vm);
     bool asimd_VCVT_fixed(bool U, bool D, size_t imm6, size_t Vd, bool to_fixed, bool Q, bool M, size_t Vm);
 
     // Advanced SIMD two register, miscellaneous
@@ -560,6 +561,7 @@ struct ArmTranslatorVisitor final {
     bool asimd_VMOVN(bool D, size_t sz, size_t Vd, bool M, size_t Vm);
     bool asimd_VQMOVUN(bool D, size_t sz, size_t Vd, bool M, size_t Vm);
     bool asimd_VQMOVN(bool D, size_t sz, size_t Vd, bool op, bool M, size_t Vm);
+    bool asimd_VSHLL_max(bool D, size_t sz, size_t Vd, bool M, size_t Vm);
     bool asimd_VRECPE(bool D, size_t sz, size_t Vd, bool F, bool Q, bool M, size_t Vm);
     bool asimd_VRSQRTE(bool D, size_t sz, size_t Vd, bool F, bool Q, bool M, size_t Vm);
     bool asimd_VCVT_integer(bool D, size_t sz, size_t Vd, bool op, bool U, bool Q, bool M, size_t Vm);