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141 lines
3.8 KiB
C++
141 lines
3.8 KiB
C++
//
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// State.cpp
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// Clock Signal
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//
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// Created by Thomas Harte on 13/05/2020.
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// Copyright © 2020 Thomas Harte. All rights reserved.
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//
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#include "State.hpp"
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using namespace CPU::Z80;
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State::State(const ProcessorBase &src): State() {
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// Registers.
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registers.a = src.a_;
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registers.flags = src.get_flags();
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registers.bc = src.bc_.full;
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registers.de = src.de_.full;
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registers.hl = src.hl_.full;
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registers.bcDash = src.bcDash_.full;
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registers.deDash = src.deDash_.full;
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registers.hlDash = src.hlDash_.full;
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registers.ix = src.ix_.full;
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registers.iy = src.iy_.full;
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registers.ir = src.ir_.full;
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registers.program_counter = src.pc_.full;
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registers.stack_pointer = src.sp_.full;
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registers.memptr = src.memptr_.full;
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registers.interrupt_mode = src.interrupt_mode_;
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registers.iff1 = src.iff1_;
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registers.iff2 = src.iff2_;
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// Inputs.
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inputs.irq = src.irq_line_;
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inputs.nmi = src.nmi_line_;
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inputs.wait = src.wait_line_;
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inputs.bus_request = src.bus_request_line_;
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// Execution State.
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execution_state.is_halted = src.halt_mask_ == 0x00;
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execution_state.requests = src.request_status_;
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execution_state.last_requests = src.last_request_status_;
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execution_state.temp8 = src.temp8_;
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execution_state.temp16 = src.temp16_.full;
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execution_state.operation = src.operation_;
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execution_state.flag_adjustment_history = src.flag_adjustment_history_;
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execution_state.pc_increment = src.pc_increment_;
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}
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void State::apply(ProcessorBase &target) {
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// Registers.
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target.a_ = registers.a;
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target.set_flags(registers.flags);
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target.bc_.full = registers.bc;
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target.de_.full = registers.de;
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target.hl_.full = registers.hl;
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target.bcDash_.full = registers.bcDash;
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target.deDash_.full = registers.deDash;
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target.hlDash_.full = registers.hlDash;
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target.ix_.full = registers.ix;
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target.iy_.full = registers.iy;
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target.ir_.full = registers.ir;
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target.pc_.full = registers.program_counter;
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target.sp_.full = registers.stack_pointer;
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target.memptr_.full = registers.memptr;
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target.interrupt_mode_ = registers.interrupt_mode;
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target.iff1_ = registers.iff1;
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target.iff2_ = registers.iff2;
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// Inputs.
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target.irq_line_ = inputs.irq;
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target.nmi_line_ = inputs.nmi;
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target.wait_line_ = inputs.wait;
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target.bus_request_line_ = inputs.bus_request;
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// Execution State.
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target.halt_mask_ = execution_state.is_halted ? 0x00 : 0xff;
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target.request_status_ = execution_state.requests;
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target.last_request_status_ = execution_state.last_requests;
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target.temp8_ = execution_state.temp8;
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target.temp16_.full = execution_state.temp16;
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target.operation_ = execution_state.operation;
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target.flag_adjustment_history_ = execution_state.flag_adjustment_history;
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target.pc_increment_ = execution_state.pc_increment;
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// TODO: scheduled_program_counter_ and number_of_cycles_.
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}
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// Boilerplate follows here, to establish 'reflection'.
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State::State() {
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if(needs_declare()) {
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DeclareField(registers);
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DeclareField(execution_state);
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DeclareField(inputs);
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}
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}
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State::Registers::Registers() {
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if(needs_declare()) {
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DeclareField(a);
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DeclareField(flags);
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DeclareField(bc);
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DeclareField(de);
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DeclareField(hl);
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DeclareField(bcDash);
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DeclareField(deDash);
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DeclareField(hlDash);
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DeclareField(ix);
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DeclareField(iy);
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DeclareField(ir);
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DeclareField(program_counter);
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DeclareField(stack_pointer);
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DeclareField(interrupt_mode);
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DeclareField(iff1);
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DeclareField(iff2);
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DeclareField(memptr);
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}
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}
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State::ExecutionState::ExecutionState() {
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if(needs_declare()) {
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DeclareField(is_halted);
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DeclareField(requests);
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DeclareField(last_requests);
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DeclareField(temp8);
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DeclareField(operation);
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DeclareField(temp16);
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DeclareField(flag_adjustment_history);
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DeclareField(pc_increment);
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}
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}
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State::Inputs::Inputs() {
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if(needs_declare()) {
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DeclareField(irq);
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DeclareField(nmi);
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DeclareField(bus_request);
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DeclareField(wait);
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}
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}
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