// license:BSD-3-Clause // copyright-holders:Andrew Gardner #include "emu.h" #include #include "opcode.h" 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. std::string opString = ""; std::string pmString = ""; if (m_instruction) m_instruction->disassemble(opString); if (m_parallelMove) m_parallelMove->disassemble(pmString); return opString + " " + pmString; } void Opcode::evaluate(dsp56156_core* cpustate) const { if (m_instruction) m_instruction->evaluate(cpustate); if (m_parallelMove) m_parallelMove->evaluate(); } 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; } size_t Opcode::evalSize() const { if (m_instruction && m_instruction->valid()) return m_instruction->evalSize(); // Probably doesn't matter : + 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 { char tempStr[1024]; sprintf(tempStr, "dc $%x", m_word0); return std::string(tempStr); } }