/*  PCSX2 - PS2 Emulator for PCs
 *  Copyright (C) 2002-2010  PCSX2 Dev Team
 *
 *  PCSX2 is free software: you can redistribute it and/or modify it under the terms
 *  of the GNU Lesser General Public License as published by the Free Software Found-
 *  ation, either version 3 of the License, or (at your option) any later version.
 *
 *  PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 *  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 *  PURPOSE.  See the GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along with PCSX2.
 *  If not, see <http://www.gnu.org/licenses/>.
 */


// This module contains code shared by both the dynarec and interpreter versions
// of the VU0 micro.

#include "PrecompiledHeader.h"
#include "Common.h"
#include <cmath>
#include "VUmicro.h"
#include "MTVU.h"

#ifdef PCSX2_DEBUG
u32 vudump = 0;
#endif

#define VF_VAL(x) ((x==0x80000000)?0:(x))

// This is called by the COP2 as per the CTC instruction
void vu1ResetRegs()
{
	VU0.VI[REG_VPU_STAT].UL &= ~0xff00; // stop vu1
	VU0.VI[REG_FBRST].UL &= ~0xff00; // stop vu1
	vif1Regs.stat.VEW = false;
}

void vu1Finish() {
	if (THREAD_VU1) {
		if (VU0.VI[REG_VPU_STAT].UL & 0x100) DevCon.Error("MTVU: VU0.VI[REG_VPU_STAT].UL & 0x100");
		return;
	}
	while (VU0.VI[REG_VPU_STAT].UL & 0x100) {
		VUM_LOG("vu1ExecMicro > Stalling until current microprogram finishes");
		CpuVU1->Execute(vu1RunCycles);
	}
}

void __fastcall vu1ExecMicro(u32 addr)
{
	vif1Regs.stat.VEW = true;

	if (THREAD_VU1) {
		vu1Thread.ExecuteVU(addr, vif1Regs.top, vif1Regs.itop);
		VU0.VI[REG_VPU_STAT].UL &= ~0xFF00;
		return;
	}
	static int count = 0;
	vu1Finish();

	VUM_LOG("vu1ExecMicro %x (count=%d)", addr, count++);

	VU0.VI[REG_VPU_STAT].UL &= ~0xFF00;
	VU0.VI[REG_VPU_STAT].UL |=  0x0100;

	if ((s32)addr != -1) VU1.VI[REG_TPC].UL = addr;
	_vuExecMicroDebug(VU1);

	CpuVU1->Execute(vu1RunCycles);
}
