//
// Created by anonymus-raccoon on 2/28/20.
//

#include "../CPU.hpp"

namespace ComSquare::CPU
{
	int CPU::TAX(uint24_t, AddressingMode)
	{
		if (this->_registers.p.x_b) {
			this->_registers.xl = this->_registers.al;
			this->_registers.p.z = this->_registers.xl == 0;
			this->_registers.p.n = this->_registers.x & 0x80u;
		} else {
			this->_registers.x = this->_registers.a;
			this->_registers.p.z = this->_registers.x == 0;
			this->_registers.p.n = this->_registers.x & 0x8000u;
		}
		return 0;
	}

	int CPU::TAY(uint24_t, AddressingMode)
	{
		if (this->_registers.p.x_b) {
			this->_registers.yl = this->_registers.al;
			this->_registers.p.z = this->_registers.yl == 0;
			this->_registers.p.n = this->_registers.y & 0x80u;
		} else {
			this->_registers.y = this->_registers.a;
			this->_registers.p.z = this->_registers.y == 0;
			this->_registers.p.n = this->_registers.y & 0x8000u;
		}
		return 0;
	}

	int CPU::TXS(uint24_t, AddressingMode)
	{
		if (this->_registers.p.x_b) {
			this->_registers.sh = 0;
			this->_registers.sl = this->_registers.xl;
			this->_registers.p.z = this->_registers.sl == 0;
			this->_registers.p.n = this->_registers.s & 0x80u;
		} else {
			this->_registers.s = this->_registers.x;
			this->_registers.p.z = this->_registers.s == 0;
			this->_registers.p.n = this->_registers.s & 0x8000u;
		}
		return 0;
	}
}