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Merge pull request #1156 from Lakumakkara/lop3
gl_shader_decompiler: Implement LOP3
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commit
232b0d9d2a
@ -280,6 +280,19 @@ union Instruction {
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BitField<56, 1, u64> invert_b;
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} lop32i;
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union {
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BitField<28, 8, u64> imm_lut28;
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BitField<48, 8, u64> imm_lut48;
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u32 GetImmLut28() const {
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return static_cast<u32>(imm_lut28);
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}
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u32 GetImmLut48() const {
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return static_cast<u32>(imm_lut48);
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}
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} lop3;
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u32 GetImm20_19() const {
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u32 imm{static_cast<u32>(imm20_19)};
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imm <<= 12;
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@ -650,6 +663,9 @@ public:
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LOP_R,
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LOP_IMM,
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LOP32I,
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LOP3_C,
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LOP3_R,
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LOP3_IMM,
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MOV_C,
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MOV_R,
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MOV_IMM,
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@ -872,6 +888,9 @@ private:
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INST("0101110001000---", Id::LOP_R, Type::ArithmeticInteger, "LOP_R"),
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INST("0011100001000---", Id::LOP_IMM, Type::ArithmeticInteger, "LOP_IMM"),
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INST("000001----------", Id::LOP32I, Type::ArithmeticIntegerImmediate, "LOP32I"),
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INST("0000001---------", Id::LOP3_C, Type::ArithmeticInteger, "LOP3_C"),
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INST("0101101111100---", Id::LOP3_R, Type::ArithmeticInteger, "LOP3_R"),
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INST("0011110---------", Id::LOP3_IMM, Type::ArithmeticInteger, "LOP3_IMM"),
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INST("0100110001001---", Id::SHL_C, Type::Shift, "SHL_C"),
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INST("0101110001001---", Id::SHL_R, Type::Shift, "SHL_R"),
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INST("0011100-01001---", Id::SHL_IMM, Type::Shift, "SHL_IMM"),
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@ -849,6 +849,33 @@ private:
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}
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}
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void WriteLop3Instruction(Register dest, const std::string& op_a, const std::string& op_b,
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const std::string& op_c, const std::string& imm_lut) {
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if (dest == Tegra::Shader::Register::ZeroIndex) {
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return;
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}
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static constexpr std::array<const char*, 32> shift_amounts = {
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"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10",
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"11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21",
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"22", "23", "24", "25", "26", "27", "28", "29", "30", "31"};
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std::string result;
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result += '(';
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for (size_t i = 0; i < shift_amounts.size(); ++i) {
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if (i)
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result += '|';
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result += "(((" + imm_lut + " >> (((" + op_c + " >> " + shift_amounts[i] +
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") & 1) | ((" + op_b + " >> " + shift_amounts[i] + ") & 1) << 1 | ((" + op_a +
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" >> " + shift_amounts[i] + ") & 1) << 2)) & 1) << " + shift_amounts[i] + ")";
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}
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result += ')';
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regs.SetRegisterToInteger(dest, true, 0, result, 1, 1);
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}
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void WriteTexsInstruction(const Instruction& instr, const std::string& coord,
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const std::string& texture) {
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// Add an extra scope and declare the texture coords inside to prevent
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@ -1297,6 +1324,20 @@ private:
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instr.alu.lop.pred_result_mode, instr.alu.lop.pred48);
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break;
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}
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case OpCode::Id::LOP3_C:
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case OpCode::Id::LOP3_R:
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case OpCode::Id::LOP3_IMM: {
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std::string op_c = regs.GetRegisterAsInteger(instr.gpr39);
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std::string lut;
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if (opcode->GetId() == OpCode::Id::LOP3_R) {
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lut = '(' + std::to_string(instr.alu.lop3.GetImmLut28()) + ')';
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} else {
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lut = '(' + std::to_string(instr.alu.lop3.GetImmLut48()) + ')';
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}
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WriteLop3Instruction(instr.gpr0, op_a, op_b, op_c, lut);
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break;
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}
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case OpCode::Id::IMNMX_C:
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case OpCode::Id::IMNMX_R:
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case OpCode::Id::IMNMX_IMM: {
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