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https://github.com/jpd002/Play-.git
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105 lines
3.1 KiB
C++
105 lines
3.1 KiB
C++
#include "VuExecutor.h"
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#include "VuBasicBlock.h"
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#include "xxhash.h"
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CVuExecutor::CVuExecutor(CMIPS& context, uint32 maxAddress)
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: CGenericMipsExecutor(context, maxAddress, BLOCK_CATEGORY_PS2_VU)
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{
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}
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void CVuExecutor::Reset()
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{
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m_cachedBlocks.clear();
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CGenericMipsExecutor::Reset();
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}
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BasicBlockPtr CVuExecutor::BlockFactory(CMIPS& context, uint32 begin, uint32 end)
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{
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uint32 blockSize = ((end - begin) + 4) / 4;
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uint32 blockSizeByte = blockSize * 4;
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uint32* blockMemory = reinterpret_cast<uint32*>(alloca(blockSizeByte));
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for(uint32 address = begin; address <= end; address += 8)
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{
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uint32 index = (address - begin) / 4;
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uint32 addressLo = address + 0;
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uint32 addressHi = address + 4;
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uint32 opcodeLo = m_context.m_pMemoryMap->GetInstruction(addressLo);
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uint32 opcodeHi = m_context.m_pMemoryMap->GetInstruction(addressHi);
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assert((index + 0) < blockSize);
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blockMemory[index + 0] = opcodeLo;
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assert((index + 1) < blockSize);
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blockMemory[index + 1] = opcodeHi;
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}
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auto xxHash = XXH3_128bits(blockMemory, blockSizeByte);
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uint128 hash;
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memcpy(&hash, &xxHash, sizeof(xxHash));
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static_assert(sizeof(hash) == sizeof(xxHash));
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auto blockKey = std::make_pair(hash, blockSizeByte);
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auto beginBlockIterator = m_cachedBlocks.lower_bound(blockKey);
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auto endBlockIterator = m_cachedBlocks.upper_bound(blockKey);
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for(auto blockIterator = beginBlockIterator; blockIterator != endBlockIterator; blockIterator++)
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{
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const auto& basicBlock(blockIterator->second);
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if(basicBlock->GetBeginAddress() == begin && basicBlock->GetEndAddress() == end)
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{
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return basicBlock;
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}
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}
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auto result = std::make_shared<CVuBasicBlock>(context, begin, end, m_blockCategory);
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if(beginBlockIterator != endBlockIterator)
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{
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result->CopyFunctionFrom(beginBlockIterator->second);
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}
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else
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{
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result->Compile();
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}
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m_cachedBlocks.insert(std::make_pair(blockKey, result));
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return result;
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}
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#define VU_UPPEROP_BIT_I (0x80000000)
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#define VU_UPPEROP_BIT_E (0x40000000)
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void CVuExecutor::PartitionFunction(uint32 startAddress)
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{
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uint32 endAddress = startAddress + MAX_BLOCK_SIZE - 4;
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uint32 branchAddress = MIPS_INVALID_PC;
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for(uint32 address = startAddress; address < endAddress; address += 8)
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{
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uint32 addrLo = address + 0;
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uint32 addrHi = address + 4;
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uint32 lowerOp = m_context.m_pMemoryMap->GetInstruction(addrLo);
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uint32 upperOp = m_context.m_pMemoryMap->GetInstruction(addrHi);
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auto branchType = m_context.m_pArch->IsInstructionBranch(&m_context, addrLo, lowerOp);
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if(upperOp & VU_UPPEROP_BIT_E)
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{
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endAddress = address + 0xC;
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break;
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}
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else if(branchType == MIPS_BRANCH_NORMAL)
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{
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branchAddress = m_context.m_pArch->GetInstructionEffectiveAddress(&m_context, addrLo, lowerOp);
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endAddress = address + 0xC;
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break;
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}
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else if(branchType == MIPS_BRANCH_NODELAY)
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{
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//Should never happen
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assert(false);
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}
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}
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assert((endAddress - startAddress) <= MAX_BLOCK_SIZE);
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CreateBlock(startAddress, endAddress);
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auto block = static_cast<CVuBasicBlock*>(FindBlockStartingAt(startAddress));
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if(block->IsLinkable())
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{
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SetupBlockLinks(startAddress, endAddress, branchAddress);
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}
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}
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