A64: Implement MOVI, MVNI, ORR (vector, immediate), BIC (vector, immediate)

There wasn't a clean way to seperate these instructions out.

src/frontend/A64/translate/impl/simd_modified_immediate.cpp

@@ -0,0 +1,79 @@
+/* This file is part of the dynarmic project.
+ * Copyright (c) 2018 MerryMage
+ * This software may be used and distributed according to the terms of the GNU
+ * General Public License version 2 or any later version.
+ */
+
+#include "common/bit_util.h"
+#include "frontend/A64/translate/impl/impl.h"
+
+namespace Dynarmic::A64 {
+
+bool TranslatorVisitor::MOVI(bool Q, bool op, Imm<1> a, Imm<1> b, Imm<1> c, Imm<4> cmode, Imm<1> d, Imm<1> e, Imm<1> f, Imm<1> g, Imm<1> h, Vec Vd) {
+    const size_t datasize = Q ? 128 : 64;
+
+    // MOVI
+    // also FMOV (vector, immediate) when cmode == 0b1111
+    const auto movi = [&]{
+        u64 imm64 = AdvSIMDExpandImm(op, cmode, concatenate(a, b, c, d, e, f, g, h));
+        const IR::U128 imm = datasize == 64 ? ir.ZeroExtendToQuad(ir.Imm64(imm64)) : ir.VectorBroadcast64(ir.Imm64(imm64));
+        V(128, Vd, imm);
+        return true;
+    };
+
+    // MVNI
+    const auto mvni = [&]{
+        u64 imm64 = ~AdvSIMDExpandImm(op, cmode, concatenate(a, b, c, d, e, f, g, h));
+        const IR::U128 imm = datasize == 64 ? ir.ZeroExtendToQuad(ir.Imm64(imm64)) : ir.VectorBroadcast64(ir.Imm64(imm64));
+        V(128, Vd, imm);
+        return true;
+    };
+
+    // ORR (vector, immediate)
+    const auto orr = [&]{
+        u64 imm64 = AdvSIMDExpandImm(op, cmode, concatenate(a, b, c, d, e, f, g, h));
+        const IR::U128 imm = datasize == 64 ? ir.ZeroExtendToQuad(ir.Imm64(imm64)) : ir.VectorBroadcast64(ir.Imm64(imm64));
+        const IR::U128 operand = V(datasize, Vd);
+        const IR::U128 result = ir.VectorOr(operand, imm);
+        V(datasize, Vd, result);
+        return true;
+    };
+
+    // BIC (vector, immediate)
+    const auto bic = [&]{
+        u64 imm64 = ~AdvSIMDExpandImm(op, cmode, concatenate(a, b, c, d, e, f, g, h));
+        const IR::U128 imm = datasize == 64 ? ir.ZeroExtendToQuad(ir.Imm64(imm64)) : ir.VectorBroadcast64(ir.Imm64(imm64));
+        const IR::U128 operand = V(datasize, Vd);
+        const IR::U128 result = ir.VectorAnd(operand, imm);
+        V(datasize, Vd, result);
+        return true;
+    };
+
+    switch (concatenate(cmode, Imm<1>{op}).ZeroExtend()) {
+    case 0b00000: case 0b00100: case 0b01000: case 0b01100:
+    case 0b10000: case 0b10100:
+    case 0b11000: case 0b11010:
+    case 0b11100: case 0b11101: case 0b11110:
+        return movi();
+    case 0b11111:
+        if (!Q) {
+            return UnallocatedEncoding();
+        }
+        return movi();
+    case 0b00001: case 0b00101: case 0b01001: case 0b01101:
+    case 0b10001: case 0b10101:
+    case 0b11001: case 0b11011:
+        return mvni();
+    case 0b00010: case 0b00110: case 0b01010: case 0b01110:
+    case 0b10010: case 0b10110:
+        return orr();
+    case 0b00011: case 0b00111: case 0b01011: case 0b01111:
+    case 0b10011: case 0b10111:
+        return bic();
+    }
+
+    UNREACHABLE();
+    return true;
+}
+
+} // namespace Dynarmic::A64