// license:BSD-3-Clause // copyright-holders:Andrew Gardner #include "emu.h" #include "opcode.h" #include namespace DSP_56156 { Opcode::Opcode(uint16_t w0, uint16_t w1) : m_word0(w0)/*, m_word1(w1)*/ { m_instruction = Instruction::decodeInstruction(this, w0, w1); m_parallelMove = ParallelMove::decodeParallelMove(this, w0, w1); } Opcode::~Opcode() { } std::string Opcode::disassemble() const { // Duck out early if there isn't a valid op if (!m_instruction) return dcString(); // Duck out if either has had an explicit error. if (m_instruction && !m_instruction->valid()) return dcString(); if (m_parallelMove && !m_parallelMove->valid()) return dcString(); // Disassemble what you can. auto opString = m_instruction ? m_instruction->disassemble() : ""; auto pmString = m_parallelMove ? m_parallelMove->disassemble() : ""; return opString + " " + pmString; } size_t Opcode::size() const { if (m_instruction && m_instruction->valid()) return m_instruction->size() + m_instruction->sizeIncrement(); // Opcode failed to decode, so push it past dc return 1; } const reg_id& Opcode::instSource() const { return m_instruction->source(); } const reg_id& Opcode::instDestination() const { return m_instruction->destination(); } size_t Opcode::instAccumulatorBitsModified() const { return m_instruction->accumulatorBitsModified(); } std::string Opcode::dcString() const { return util::string_format("dc $%x", m_word0); } } // namespace DSP_56156