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104 lines
1.8 KiB
C++
104 lines
1.8 KiB
C++
#include "INTC.h"
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#include "../Log.h"
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#include "../RegisterStateFile.h"
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#define LOG_NAME ("intc")
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#define STATE_REGS_XML ("intc/regs.xml")
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CINTC::CINTC(CDMAC& dmac, CGSHandler*& gs)
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: m_INTC_STAT(0)
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, m_INTC_MASK(0)
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, m_dmac(dmac)
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, m_gs(gs)
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{
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}
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CINTC::~CINTC()
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{
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}
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void CINTC::Reset()
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{
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m_INTC_STAT = 0;
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m_INTC_MASK = 0;
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}
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uint32 CINTC::GetStat() const
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{
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uint32 tempStat = m_INTC_STAT;
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if((m_gs != nullptr) && m_gs->IsInterruptPending())
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{
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tempStat |= (1 << INTC_LINE_GS);
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}
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if(m_dmac.IsInterruptPending())
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{
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tempStat |= (1 << INTC_LINE_DMAC);
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}
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return tempStat;
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}
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bool CINTC::IsInterruptPending() const
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{
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return (GetStat() & m_INTC_MASK) != 0;
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}
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uint32 CINTC::GetRegister(uint32 nAddress)
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{
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switch(nAddress)
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{
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case INTC_STAT:
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return GetStat();
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break;
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case INTC_MASK:
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return m_INTC_MASK;
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break;
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default:
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CLog::GetInstance().Print(LOG_NAME, "Read an unhandled register (0x%0.8X).\r\n", nAddress);
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break;
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}
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return 0;
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}
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void CINTC::SetRegister(uint32 nAddress, uint32 nValue)
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{
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switch(nAddress)
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{
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case INTC_STAT:
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m_INTC_STAT &= ~nValue;
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break;
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case INTC_MASK:
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m_INTC_MASK ^= nValue;
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break;
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default:
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CLog::GetInstance().Print(LOG_NAME, "Wrote to an unhandled register (0x%0.8X).\r\n", nAddress);
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break;
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}
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}
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void CINTC::AssertLine(uint32 nLine)
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{
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m_INTC_STAT |= (1 << nLine);
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}
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void CINTC::LoadState(Framework::CZipArchiveReader& archive)
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{
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CRegisterStateFile registerFile(*archive.BeginReadFile(STATE_REGS_XML));
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m_INTC_STAT = registerFile.GetRegister32("INTC_STAT");
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m_INTC_MASK = registerFile.GetRegister32("INTC_MASK");
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}
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void CINTC::SaveState(Framework::CZipArchiveWriter& archive)
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{
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CRegisterStateFile* registerFile = new CRegisterStateFile(STATE_REGS_XML);
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registerFile->SetRegister32("INTC_STAT", m_INTC_STAT);
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registerFile->SetRegister32("INTC_MASK", m_INTC_MASK);
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archive.InsertFile(registerFile);
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}
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