mirror of
https://github.com/jpd002/Play-.git
synced 2025-04-28 13:47:57 +03:00
4574b116f7
- Removed the old CodeGen classes. - Fixed everything to make PsfPlayer work at a decent level. - Added 64-bits configs to PsfPlayer. git-svn-id: http://svn.purei.org/purei/trunk@692 b36208d7-6611-0410-8bec-b1987f11c4a2
112 lines
2.6 KiB
C++
112 lines
2.6 KiB
C++
#include <assert.h>
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#include <stddef.h>
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#include "MIPSInstructionFactory.h"
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#include "MIPS.h"
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#include "PtrMacro.h"
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#include "offsetof_def.h"
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CMIPSInstructionFactory::CMIPSInstructionFactory(MIPS_REGSIZE nRegSize) :
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m_pCtx(NULL),
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m_codeGen(NULL),
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m_nAddress(0),
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m_nOpcode(0),
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m_regSize(nRegSize)
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{
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}
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CMIPSInstructionFactory::~CMIPSInstructionFactory()
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{
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}
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void CMIPSInstructionFactory::SetupQuickVariables(uint32 nAddress, CMipsJitter* codeGen, CMIPS* pCtx)
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{
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m_pCtx = pCtx;
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m_codeGen = codeGen;
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m_nAddress = nAddress;
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m_nOpcode = m_pCtx->m_pMemoryMap->GetInstruction(m_nAddress);
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}
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void CMIPSInstructionFactory::ComputeMemAccessAddr()
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{
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uint8 nRS = (uint8) ((m_nOpcode >> 21) & 0x001F);
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uint16 nImmediate = (uint16)((m_nOpcode >> 0) & 0xFFFF);
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if(m_pCtx->m_pAddrTranslator == &CMIPS::TranslateAddress64)
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{
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m_codeGen->PushRel(offsetof(CMIPS, m_State.nGPR[nRS].nV[0]));
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if(nImmediate != 0)
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{
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m_codeGen->PushCst((int16)nImmediate);
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m_codeGen->Add();
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}
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m_codeGen->PushCst(0x1FFFFFFF);
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m_codeGen->And();
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}
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else
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{
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//TODO: Compute the complete 64-bit address
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//Translate the address
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//Push context
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m_codeGen->PushCtx();
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//Push high part
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m_codeGen->PushRel(offsetof(CMIPS, m_State.nGPR[nRS].nV[1]));
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//Push low part of address
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m_codeGen->PushRel(offsetof(CMIPS, m_State.nGPR[nRS].nV[0]));
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if(nImmediate != 0)
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{
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m_codeGen->PushCst((int16)nImmediate);
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m_codeGen->Add();
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}
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//Call
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m_codeGen->Call(reinterpret_cast<void*>(m_pCtx->m_pAddrTranslator), 3, true);
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}
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}
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void CMIPSInstructionFactory::Branch(Jitter::CONDITION condition)
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{
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uint16 nImmediate = (uint16)(m_nOpcode & 0xFFFF);
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m_codeGen->PushCst(MIPS_INVALID_PC);
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m_codeGen->PullRel(offsetof(CMIPS, m_State.nDelayedJumpAddr));
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m_codeGen->BeginIf(condition);
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{
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m_codeGen->PushCst((m_nAddress + 4) + CMIPS::GetBranch(nImmediate));
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m_codeGen->PullRel(offsetof(CMIPS, m_State.nDelayedJumpAddr));
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}
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m_codeGen->EndIf();
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}
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void CMIPSInstructionFactory::BranchLikely(Jitter::CONDITION condition)
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{
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uint16 nImmediate = (uint16)(m_nOpcode & 0xFFFF);
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m_codeGen->PushCst(MIPS_INVALID_PC);
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m_codeGen->PullRel(offsetof(CMIPS, m_State.nDelayedJumpAddr));
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m_codeGen->BeginIf(condition);
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{
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m_codeGen->PushCst((m_nAddress + 4) + CMIPS::GetBranch(nImmediate));
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m_codeGen->PullRel(offsetof(CMIPS, m_State.nDelayedJumpAddr));
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}
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m_codeGen->Else();
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{
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m_codeGen->PushCst(m_nAddress + 8);
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m_codeGen->PullRel(offsetof(CMIPS, m_State.nPC));
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m_codeGen->Goto(m_codeGen->GetFinalBlockLabel());
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}
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m_codeGen->EndIf();
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}
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void CMIPSInstructionFactory::Illegal()
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{
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throw std::runtime_error("Illegal instruction.");
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}
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