mirror of
https://github.com/holub/mame
synced 2025-04-19 07:00:31 +03:00
81 lines
1.9 KiB
C++
81 lines
1.9 KiB
C++
// license:BSD-3-Clause
|
|
// copyright-holders:Andrew Gardner
|
|
#include <stdio.h>
|
|
|
|
#include "opcode.h"
|
|
|
|
namespace DSP56K
|
|
{
|
|
Opcode::Opcode(UINT16 w0, UINT16 w1) : m_word0(w0)/*, m_word1(w1)*/
|
|
{
|
|
m_instruction = std::move(Instruction::decodeInstruction(this, w0, w1));
|
|
m_parallelMove = std::move(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(dsp56k_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);
|
|
}
|
|
|
|
}
|