project64/Source/Project64/N64 System/Mips/Register Class.cpp

/****************************************************************************
*                                                                           *
* Project64 - A Nintendo 64 emulator.                                      *
* http://www.pj64-emu.com/                                                  *
* Copyright (C) 2012 Project64. All rights reserved.                        *
*                                                                           *
* License:                                                                  *
* GNU/GPLv2 http://www.gnu.org/licenses/gpl-2.0.html                        *
*                                                                           *
****************************************************************************/
#include "stdafx.h"
#include <Project64\User Interface\LoggingUI.h>

const char * CRegName::GPR[32] = { "r0", "at", "v0", "v1", "a0", "a1", "a2", "a3",
"t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7",
"s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7",
"t8", "t9", "k0", "k1", "gp", "sp", "s8", "ra" };

const char *CRegName::GPR_Hi[32] = { "r0.HI", "at.HI", "v0.HI", "v1.HI", "a0.HI", "a1.HI",
"a2.HI", "a3.HI", "t0.HI", "t1.HI", "t2.HI", "t3.HI",
"t4.HI", "t5.HI", "t6.HI", "t7.HI", "s0.HI", "s1.HI",
"s2.HI", "s3.HI", "s4.HI", "s5.HI", "s6.HI", "s7.HI",
"t8.HI", "t9.HI", "k0.HI", "k1.HI", "gp.HI", "sp.HI",
"s8.HI", "ra.HI" };

const char *CRegName::GPR_Lo[32] = { "r0.LO", "at.LO", "v0.LO", "v1.LO", "a0.LO", "a1.LO",
"a2.LO", "a3.LO", "t0.LO", "t1.LO", "t2.LO", "t3.LO",
"t4.LO", "t5.LO", "t6.LO", "t7.LO", "s0.LO", "s1.LO",
"s2.LO", "s3.LO", "s4.LO", "s5.LO", "s6.LO", "s7.LO",
"t8.LO", "t9.LO", "k0.LO", "k1.LO", "gp.LO", "sp.LO",
"s8.LO", "ra.LO" };

const char * CRegName::Cop0[32] = { "Index", "Random", "EntryLo0", "EntryLo1", "Context", "PageMask", "Wired", "",
"BadVAddr", "Count", "EntryHi", "Compare", "Status", "Cause", "EPC", "PRId",
"Config", "LLAddr", "WatchLo", "WatchHi", "XContext", "", "", "",
"", "", "ECC", "CacheErr", "TagLo", "TagHi", "ErrEPC", "" };

const char * CRegName::FPR[32] = { "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
"f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
"f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
"f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31" };

const char * CRegName::FPR_Ctrl[32] = { "Revision", "Unknown", "Unknown", "Unknown", "Unknown",
"Unknown", "Unknown", "Unknown", "Unknown", "Unknown", "Unknown",
"Unknown", "Unknown", "Unknown", "Unknown", "Unknown", "Unknown",
"Unknown", "Unknown", "Unknown", "Unknown", "Unknown", "Unknown",
"Unknown", "Unknown", "Unknown", "Unknown", "Unknown", "Unknown",
"Unknown", "Unknown", "FCSR" };

uint32_t      * CSystemRegisters::_PROGRAM_COUNTER = NULL;
MIPS_DWORD    * CSystemRegisters::_GPR = NULL;
MIPS_DWORD    * CSystemRegisters::_FPR = NULL;
uint32_t      * CSystemRegisters::_CP0 = NULL;
MIPS_DWORD    * CSystemRegisters::_RegHI = NULL;
MIPS_DWORD    * CSystemRegisters::_RegLO = NULL;
float        ** CSystemRegisters::_FPR_S;
double       ** CSystemRegisters::_FPR_D;
uint32_t      * CSystemRegisters::_FPCR = NULL;
uint32_t      * CSystemRegisters::_LLBit = NULL;
ROUNDING_MODE * CSystemRegisters::_RoundingModel = NULL;

CP0registers::CP0registers(uint32_t * _CP0) :
INDEX_REGISTER(_CP0[0]),
RANDOM_REGISTER(_CP0[1]),
ENTRYLO0_REGISTER(_CP0[2]),
ENTRYLO1_REGISTER(_CP0[3]),
CONTEXT_REGISTER(_CP0[4]),
PAGE_MASK_REGISTER(_CP0[5]),
WIRED_REGISTER(_CP0[6]),
BAD_VADDR_REGISTER(_CP0[8]),
COUNT_REGISTER(_CP0[9]),
ENTRYHI_REGISTER(_CP0[10]),
COMPARE_REGISTER(_CP0[11]),
STATUS_REGISTER(_CP0[12]),
CAUSE_REGISTER(_CP0[13]),
EPC_REGISTER(_CP0[14]),
CONFIG_REGISTER(_CP0[16]),
TAGLO_REGISTER(_CP0[28]),
TAGHI_REGISTER(_CP0[29]),
ERROREPC_REGISTER(_CP0[30]),
FAKE_CAUSE_REGISTER(_CP0[32])
{
}

Rdram_InterfaceReg::Rdram_InterfaceReg(uint32_t * _RdramInterface) :
RDRAM_CONFIG_REG(_RdramInterface[0]),
RDRAM_DEVICE_TYPE_REG(_RdramInterface[0]),
RDRAM_DEVICE_ID_REG(_RdramInterface[1]),
RDRAM_DELAY_REG(_RdramInterface[2]),
RDRAM_MODE_REG(_RdramInterface[3]),
RDRAM_REF_INTERVAL_REG(_RdramInterface[4]),
RDRAM_REF_ROW_REG(_RdramInterface[5]),
RDRAM_RAS_INTERVAL_REG(_RdramInterface[6]),
RDRAM_MIN_INTERVAL_REG(_RdramInterface[7]),
RDRAM_ADDR_SELECT_REG(_RdramInterface[8]),
RDRAM_DEVICE_MANUF_REG(_RdramInterface[9])
{
}

Mips_InterfaceReg::Mips_InterfaceReg(uint32_t * _MipsInterface) :
MI_INIT_MODE_REG(_MipsInterface[0]),
MI_MODE_REG(_MipsInterface[0]),
MI_VERSION_REG(_MipsInterface[1]),
MI_NOOP_REG(_MipsInterface[1]),
MI_INTR_REG(_MipsInterface[2]),
MI_INTR_MASK_REG(_MipsInterface[3])
{
}

Video_InterfaceReg::Video_InterfaceReg(uint32_t * _VideoInterface) :
VI_STATUS_REG(_VideoInterface[0]),
VI_CONTROL_REG(_VideoInterface[0]),
VI_ORIGIN_REG(_VideoInterface[1]),
VI_DRAM_ADDR_REG(_VideoInterface[1]),
VI_WIDTH_REG(_VideoInterface[2]),
VI_H_WIDTH_REG(_VideoInterface[2]),
VI_INTR_REG(_VideoInterface[3]),
VI_V_INTR_REG(_VideoInterface[3]),
VI_CURRENT_REG(_VideoInterface[4]),
VI_V_CURRENT_LINE_REG(_VideoInterface[4]),
VI_BURST_REG(_VideoInterface[5]),
VI_TIMING_REG(_VideoInterface[5]),
VI_V_SYNC_REG(_VideoInterface[6]),
VI_H_SYNC_REG(_VideoInterface[7]),
VI_LEAP_REG(_VideoInterface[8]),
VI_H_SYNC_LEAP_REG(_VideoInterface[8]),
VI_H_START_REG(_VideoInterface[9]),
VI_H_VIDEO_REG(_VideoInterface[9]),
VI_V_START_REG(_VideoInterface[10]),
VI_V_VIDEO_REG(_VideoInterface[10]),
VI_V_BURST_REG(_VideoInterface[11]),
VI_X_SCALE_REG(_VideoInterface[12]),
VI_Y_SCALE_REG(_VideoInterface[13])
{
}

AudioInterfaceReg::AudioInterfaceReg(uint32_t * _AudioInterface) :
AI_DRAM_ADDR_REG(_AudioInterface[0]),
AI_LEN_REG(_AudioInterface[1]),
AI_CONTROL_REG(_AudioInterface[2]),
AI_STATUS_REG(_AudioInterface[3]),
AI_DACRATE_REG(_AudioInterface[4]),
AI_BITRATE_REG(_AudioInterface[5])
{
}

PeripheralInterfaceReg::PeripheralInterfaceReg(uint32_t * PeripheralInterface) :
PI_DRAM_ADDR_REG(PeripheralInterface[0]),
PI_CART_ADDR_REG(PeripheralInterface[1]),
PI_RD_LEN_REG(PeripheralInterface[2]),
PI_WR_LEN_REG(PeripheralInterface[3]),
PI_STATUS_REG(PeripheralInterface[4]),
PI_BSD_DOM1_LAT_REG(PeripheralInterface[5]),
PI_DOMAIN1_REG(PeripheralInterface[5]),
PI_BSD_DOM1_PWD_REG(PeripheralInterface[6]),
PI_BSD_DOM1_PGS_REG(PeripheralInterface[7]),
PI_BSD_DOM1_RLS_REG(PeripheralInterface[8]),
PI_BSD_DOM2_LAT_REG(PeripheralInterface[9]),
PI_DOMAIN2_REG(PeripheralInterface[9]),
PI_BSD_DOM2_PWD_REG(PeripheralInterface[10]),
PI_BSD_DOM2_PGS_REG(PeripheralInterface[11]),
PI_BSD_DOM2_RLS_REG(PeripheralInterface[12])
{
}

RDRAMInt_InterfaceReg::RDRAMInt_InterfaceReg(uint32_t * RdramInterface) :
RI_MODE_REG(RdramInterface[0]),
RI_CONFIG_REG(RdramInterface[1]),
RI_CURRENT_LOAD_REG(RdramInterface[2]),
RI_SELECT_REG(RdramInterface[3]),
RI_COUNT_REG(RdramInterface[4]),
RI_REFRESH_REG(RdramInterface[4]),
RI_LATENCY_REG(RdramInterface[5]),
RI_RERROR_REG(RdramInterface[6]),
RI_WERROR_REG(RdramInterface[7])
{
}

DisplayControlReg::DisplayControlReg(uint32_t * _DisplayProcessor) :
DPC_START_REG(_DisplayProcessor[0]),
DPC_END_REG(_DisplayProcessor[1]),
DPC_CURRENT_REG(_DisplayProcessor[2]),
DPC_STATUS_REG(_DisplayProcessor[3]),
DPC_CLOCK_REG(_DisplayProcessor[4]),
DPC_BUFBUSY_REG(_DisplayProcessor[5]),
DPC_PIPEBUSY_REG(_DisplayProcessor[6]),
DPC_TMEM_REG(_DisplayProcessor[7])
{
}

SigProcessor_InterfaceReg::SigProcessor_InterfaceReg(uint32_t * _SignalProcessorInterface) :
SP_MEM_ADDR_REG(_SignalProcessorInterface[0]),
SP_DRAM_ADDR_REG(_SignalProcessorInterface[1]),
SP_RD_LEN_REG(_SignalProcessorInterface[2]),
SP_WR_LEN_REG(_SignalProcessorInterface[3]),
SP_STATUS_REG(_SignalProcessorInterface[4]),
SP_DMA_FULL_REG(_SignalProcessorInterface[5]),
SP_DMA_BUSY_REG(_SignalProcessorInterface[6]),
SP_SEMAPHORE_REG(_SignalProcessorInterface[7]),
SP_PC_REG(_SignalProcessorInterface[8]),
SP_IBIST_REG(_SignalProcessorInterface[9])
{
}

Serial_InterfaceReg::Serial_InterfaceReg(uint32_t * SerialInterface) :
SI_DRAM_ADDR_REG(SerialInterface[0]),
SI_PIF_ADDR_RD64B_REG(SerialInterface[1]),
SI_PIF_ADDR_WR64B_REG(SerialInterface[2]),
SI_STATUS_REG(SerialInterface[3])
{
}

CRegisters::CRegisters(CN64System * System, CSystemEvents * SystemEvents) :
CP0registers(m_CP0),
Rdram_InterfaceReg(m_RDRAM_Registers),
Mips_InterfaceReg(m_Mips_Interface),
Video_InterfaceReg(m_Video_Interface),
AudioInterfaceReg(m_Audio_Interface),
PeripheralInterfaceReg(m_Peripheral_Interface),
RDRAMInt_InterfaceReg(m_RDRAM_Interface),
SigProcessor_InterfaceReg(m_SigProcessor_Interface),
DisplayControlReg(m_Display_ControlReg),
Serial_InterfaceReg(m_SerialInterface),
m_System(System),
m_SystemEvents(SystemEvents)
{
    Reset();
}

void CRegisters::Reset()
{
    m_FirstInterupt = true;

    memset(m_GPR, 0, sizeof(m_GPR));
    memset(m_CP0, 0, sizeof(m_CP0));
    memset(m_FPR, 0, sizeof(m_FPR));
    memset(m_FPCR, 0, sizeof(m_FPCR));
    m_HI.DW = 0;
    m_LO.DW = 0;
    m_RoundingModel = ROUND_NEAR;

    m_LLBit = 0;

    //Reset System Registers
    memset(m_RDRAM_Interface, 0, sizeof(m_RDRAM_Interface));
    memset(m_RDRAM_Registers, 0, sizeof(m_RDRAM_Registers));
    memset(m_Mips_Interface, 0, sizeof(m_Mips_Interface));
    memset(m_Video_Interface, 0, sizeof(m_Video_Interface));
    memset(m_Display_ControlReg, 0, sizeof(m_Display_ControlReg));
    memset(m_Audio_Interface, 0, sizeof(m_Audio_Interface));
    memset(m_SigProcessor_Interface, 0, sizeof(m_SigProcessor_Interface));
    memset(m_Peripheral_Interface, 0, sizeof(m_Peripheral_Interface));
    memset(m_SerialInterface, 0, sizeof(m_SerialInterface));

    m_AudioIntrReg = 0;
    m_GfxIntrReg = 0;
    m_RspIntrReg = 0;

    FixFpuLocations();
}

void CRegisters::SetAsCurrentSystem()
{
    _PROGRAM_COUNTER = &m_PROGRAM_COUNTER;
    _GPR = m_GPR;
    _FPR = m_FPR;
    _CP0 = m_CP0;
    _RegHI = &m_HI;
    _RegLO = &m_LO;
    _FPR_S = m_FPR_S;
    _FPR_D = m_FPR_D;
    _FPCR = m_FPCR;
    _LLBit = &m_LLBit;
    _RoundingModel = &m_RoundingModel;
}

void CRegisters::CheckInterrupts()
{
    if (!m_System->bFixedAudio() && CpuType() != CPU_SyncCores)
    {
        MI_INTR_REG &= ~MI_INTR_AI;
        MI_INTR_REG |= (m_AudioIntrReg & MI_INTR_AI);
    }
    MI_INTR_REG |= (m_RspIntrReg & MI_INTR_SP);
    MI_INTR_REG |= (m_GfxIntrReg & MI_INTR_DP);
    if ((MI_INTR_MASK_REG & MI_INTR_REG) != 0)
    {
        FAKE_CAUSE_REGISTER |= CAUSE_IP2;
    }
    else
    {
        FAKE_CAUSE_REGISTER &= ~CAUSE_IP2;
    }

    if ((STATUS_REGISTER & STATUS_IE) == 0)
    {
        return;
    }
    if ((STATUS_REGISTER & STATUS_EXL) != 0)
    {
        return;
    }
    if ((STATUS_REGISTER & STATUS_ERL) != 0)
    {
        return;
    }

    if ((STATUS_REGISTER & FAKE_CAUSE_REGISTER & 0xFF00) != 0)
    {
        if (m_FirstInterupt)
        {
            m_FirstInterupt = false;
            if (g_Recompiler)
            {
                g_Recompiler->ClearRecompCode_Virt(0x80000000, 0x200, CRecompiler::Remove_InitialCode);
            }
        }
        m_SystemEvents->QueueEvent(SysEvent_ExecuteInterrupt);
    }
}

void CRegisters::DoAddressError(bool DelaySlot, uint32_t BadVaddr, bool FromRead)
{
    if (bHaveDebugger())
    {
        g_Notify->DisplayError(L"AddressError");
        if ((STATUS_REGISTER & STATUS_EXL) != 0)
        {
            g_Notify->DisplayError(L"EXL set in AddressError Exception");
        }
        if ((STATUS_REGISTER & STATUS_ERL) != 0)
        {
            g_Notify->DisplayError(L"ERL set in AddressError Exception");
        }
    }

    if (FromRead)
    {
        CAUSE_REGISTER = EXC_RADE;
    }
    else
    {
        CAUSE_REGISTER = EXC_WADE;
    }
    BAD_VADDR_REGISTER = BadVaddr;
    if (DelaySlot)
    {
        CAUSE_REGISTER |= CAUSE_BD;
        EPC_REGISTER = m_PROGRAM_COUNTER - 4;
    }
    else
    {
        EPC_REGISTER = m_PROGRAM_COUNTER;
    }
    STATUS_REGISTER |= STATUS_EXL;
    m_PROGRAM_COUNTER = 0x80000180;
}

void CRegisters::FixFpuLocations()
{
    if ((STATUS_REGISTER & STATUS_FR) == 0)
    {
        for (int count = 0; count < 32; count++)
        {
            m_FPR_S[count] = &m_FPR[count >> 1].F[count & 1];
            m_FPR_D[count] = &m_FPR[count >> 1].D;
        }
    }
    else
    {
        for (int count = 0; count < 32; count++) {
            m_FPR_S[count] = &m_FPR[count].F[1];
            m_FPR_D[count] = &m_FPR[count].D;
        }
    }
}

void CRegisters::DoBreakException(bool DelaySlot)
{
    if (bHaveDebugger())
    {
        if ((STATUS_REGISTER & STATUS_EXL) != 0)
        {
            g_Notify->DisplayError(L"EXL set in Break Exception");
        }
        if ((STATUS_REGISTER & STATUS_ERL) != 0)
        {
            g_Notify->DisplayError(L"ERL set in Break Exception");
        }
    }

    CAUSE_REGISTER = EXC_BREAK;
    if (DelaySlot)
    {
        CAUSE_REGISTER |= CAUSE_BD;
        EPC_REGISTER = m_PROGRAM_COUNTER - 4;
    }
    else
    {
        EPC_REGISTER = m_PROGRAM_COUNTER;
    }
    STATUS_REGISTER |= STATUS_EXL;
    m_PROGRAM_COUNTER = 0x80000180;
}

void CRegisters::DoCopUnusableException(bool DelaySlot, int Coprocessor)
{
    if (bHaveDebugger())
    {
        if ((STATUS_REGISTER & STATUS_EXL) != 0)
        {
            g_Notify->DisplayError(L"EXL set in Break Exception");
        }
        if ((STATUS_REGISTER & STATUS_ERL) != 0)
        {
            g_Notify->DisplayError(L"ERL set in Break Exception");
        }
    }

    CAUSE_REGISTER = EXC_CPU;
    if (Coprocessor == 1)
    {
        CAUSE_REGISTER |= 0x10000000;
    }
    if (DelaySlot)
    {
        CAUSE_REGISTER |= CAUSE_BD;
        EPC_REGISTER = m_PROGRAM_COUNTER - 4;
    }
    else
    {
        EPC_REGISTER = m_PROGRAM_COUNTER;
    }
    STATUS_REGISTER |= STATUS_EXL;
    m_PROGRAM_COUNTER = 0x80000180;
}

bool CRegisters::DoIntrException(bool DelaySlot)
{
    if ((STATUS_REGISTER & STATUS_IE) == 0)
    {
        return false;
    }

    if ((STATUS_REGISTER & STATUS_EXL) != 0)
    {
        return false;
    }

    if ((STATUS_REGISTER & STATUS_ERL) != 0)
    {
        return false;
    }

    if (GenerateLog() && LogExceptions() && !LogNoInterrupts())
    {
        LogMessage("%08X: Interrupt Generated", m_PROGRAM_COUNTER);
    }

    CAUSE_REGISTER = FAKE_CAUSE_REGISTER;
    CAUSE_REGISTER |= EXC_INT;

    if (DelaySlot)
    {
        CAUSE_REGISTER |= CAUSE_BD;
        EPC_REGISTER = m_PROGRAM_COUNTER - 4;
    }
    else
    {
        EPC_REGISTER = m_PROGRAM_COUNTER;
    }

    STATUS_REGISTER |= STATUS_EXL;
    m_PROGRAM_COUNTER = 0x80000180;
    return true;
}

void CRegisters::DoTLBReadMiss(bool DelaySlot, uint32_t BadVaddr)
{
    CAUSE_REGISTER = EXC_RMISS;
    BAD_VADDR_REGISTER = BadVaddr;
    CONTEXT_REGISTER &= 0xFF80000F;
    CONTEXT_REGISTER |= (BadVaddr >> 9) & 0x007FFFF0;
    ENTRYHI_REGISTER = (BadVaddr & 0xFFFFE000);
    if ((STATUS_REGISTER & STATUS_EXL) == 0)
    {
        if (DelaySlot)
        {
            CAUSE_REGISTER |= CAUSE_BD;
            EPC_REGISTER = m_PROGRAM_COUNTER - 4;
        }
        else
        {
            EPC_REGISTER = m_PROGRAM_COUNTER;
        }
        if (g_TLB->AddressDefined(BadVaddr))
        {
            m_PROGRAM_COUNTER = 0x80000180;
        }
        else
        {
            m_PROGRAM_COUNTER = 0x80000000;
        }
        STATUS_REGISTER |= STATUS_EXL;
    }
    else
    {
        if (bHaveDebugger())
        {
            g_Notify->DisplayError(stdstr_f("TLBMiss - EXL Set\nBadVaddr = %X\nAddress Defined: %s", BadVaddr, g_TLB->AddressDefined(BadVaddr) ? "TRUE" : "FALSE").ToUTF16().c_str());
        }
        m_PROGRAM_COUNTER = 0x80000180;
    }
}

void CRegisters::DoSysCallException(bool DelaySlot)
{
    if (bHaveDebugger())
    {
        if ((STATUS_REGISTER & STATUS_EXL) != 0)
        {
            g_Notify->DisplayError(L"EXL set in SysCall Exception");
        }
        if ((STATUS_REGISTER & STATUS_ERL) != 0)
        {
            g_Notify->DisplayError(L"ERL set in SysCall Exception");
        }
    }

    CAUSE_REGISTER = EXC_SYSCALL;
    if (DelaySlot)
    {
        CAUSE_REGISTER |= CAUSE_BD;
        EPC_REGISTER = m_PROGRAM_COUNTER - 4;
    }
    else
    {
        EPC_REGISTER = m_PROGRAM_COUNTER;
    }
    STATUS_REGISTER |= STATUS_EXL;
    m_PROGRAM_COUNTER = 0x80000180;
}