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// license:BSD-3-Clause
// copyright-holders:Andrew Gardner
#include "emu.h"
#include <stdio.h>
#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);
}
}
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