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@ -27,18 +27,25 @@ using MemoryImpl = dev::bytes; |
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Memory::Memory(llvm::IRBuilder<>& _builder, llvm::Module* _module) |
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: m_builder(_builder) |
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{ |
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auto memoryCreate = llvm::Function::Create(llvm::FunctionType::get(m_builder.getVoidTy(), false), |
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auto voidTy = m_builder.getVoidTy(); |
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auto i64Ty = m_builder.getInt64Ty(); |
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auto memoryCreate = llvm::Function::Create(llvm::FunctionType::get(voidTy, false), |
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llvm::GlobalValue::LinkageTypes::ExternalLinkage, |
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"evmccrt_memory_create", _module); |
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m_builder.CreateCall(memoryCreate); |
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auto memRequireTy = llvm::FunctionType::get(m_builder.getInt8PtrTy(), m_builder.getInt64Ty(), false); |
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auto memRequireTy = llvm::FunctionType::get(m_builder.getInt8PtrTy(), i64Ty, false); |
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m_memRequire = llvm::Function::Create(memRequireTy, |
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llvm::GlobalValue::LinkageTypes::ExternalLinkage, |
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"evmccrt_memory_require", _module); |
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auto i64Ty = m_builder.getInt64Ty(); |
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auto memSizeTy = llvm::FunctionType::get(i64Ty, false); |
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m_memSize = llvm::Function::Create(memSizeTy, |
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llvm::GlobalValue::LinkageTypes::ExternalLinkage, |
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"evmccrt_memory_size", _module); |
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std::vector<llvm::Type*> argTypes = {i64Ty, i64Ty}; |
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auto dumpTy = llvm::FunctionType::get(m_builder.getVoidTy(), llvm::ArrayRef<llvm::Type*>(argTypes), false); |
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m_memDump = llvm::Function::Create(dumpTy, llvm::GlobalValue::LinkageTypes::ExternalLinkage, |
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@ -46,42 +53,63 @@ Memory::Memory(llvm::IRBuilder<>& _builder, llvm::Module* _module) |
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} |
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llvm::Value* Memory::loadByte(llvm::Value* _addr) |
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llvm::Value* Memory::loadWord(llvm::Value* _addr) |
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{ |
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// trunc _addr (an i256) to i64 index and use it to index the memory
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auto index = m_builder.CreateTrunc(_addr, m_builder.getInt64Ty(), "index"); |
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auto index = m_builder.CreateTrunc(_addr, m_builder.getInt64Ty(), "mem.index"); |
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auto index31 = m_builder.CreateAdd(index, llvm::ConstantInt::get(m_builder.getInt64Ty(), 31), "mem.index.31"); |
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// load from evmccrt_memory_require()[index]
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auto base = m_builder.CreateCall(m_memRequire, index, "base"); |
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auto base = m_builder.CreateCall(m_memRequire, index31, "base"); |
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auto ptr = m_builder.CreateGEP(base, index, "ptr"); |
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auto byte = m_builder.CreateLoad(ptr, "byte"); |
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auto i256ptrTy = m_builder.getIntNTy(256)->getPointerTo(); |
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auto wordPtr = m_builder.CreateBitCast(ptr, i256ptrTy, "wordptr"); |
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auto byte = m_builder.CreateLoad(wordPtr, "word"); |
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dump(0); |
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return byte; |
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} |
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void Memory::storeWord(llvm::Value* _addr, llvm::Value* _word) |
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{ |
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auto index = m_builder.CreateTrunc(_addr, m_builder.getInt64Ty(), "index"); |
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auto index32 = m_builder.CreateAdd(index, llvm::ConstantInt::get(m_builder.getInt64Ty(), 32), "index32"); |
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auto index = m_builder.CreateTrunc(_addr, m_builder.getInt64Ty(), "mem.index"); |
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auto index31 = m_builder.CreateAdd(index, llvm::ConstantInt::get(m_builder.getInt64Ty(), 31), "mem.index31"); |
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auto base = m_builder.CreateCall(m_memRequire, index32, "base"); |
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auto base = m_builder.CreateCall(m_memRequire, index31, "base"); |
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auto ptr = m_builder.CreateGEP(base, index, "ptr"); |
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auto i256ptrTy = m_builder.getIntNTy(256)->getPointerTo(); |
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auto wordPtr = m_builder.CreateBitCast(ptr, i256ptrTy, "wordptr"); |
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m_builder.CreateStore(_word, wordPtr); |
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dump(0); |
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} |
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void Memory::storeByte(llvm::Value* _addr, llvm::Value* _byte) |
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void Memory::storeByte(llvm::Value* _addr, llvm::Value* _word) |
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{ |
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auto byte = m_builder.CreateTrunc(_word, m_builder.getInt8Ty(), "byte"); |
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auto index = m_builder.CreateTrunc(_addr, m_builder.getInt64Ty(), "index"); |
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auto base = m_builder.CreateCall(m_memRequire, index, "base"); |
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auto ptr = m_builder.CreateGEP(base, index, "ptr"); |
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m_builder.CreateStore(_byte, ptr); |
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m_builder.CreateStore(byte, ptr); |
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dump(0); |
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} |
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llvm::Value* Memory::getSize() |
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{ |
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auto size = m_builder.CreateCall(m_memSize, "mem.size"); |
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auto word = m_builder.CreateZExt(size, m_builder.getIntNTy(256), "mem.wsize"); |
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return word; |
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} |
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void Memory::dump(uint64_t _begin, uint64_t _end) |
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{ |
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if (getenv("EVMCC_DEBUG_MEMORY") == nullptr) |
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return; |
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auto beginVal = llvm::ConstantInt::get(m_builder.getInt64Ty(), _begin); |
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auto endVal = llvm::ConstantInt::get(m_builder.getInt64Ty(), _end); |
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@ -99,27 +127,43 @@ static MemoryImpl* evmccrt_memory; |
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EXPORT void evmccrt_memory_create(void) |
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{ |
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evmccrt_memory = new MemoryImpl(1); |
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evmccrt_memory = new MemoryImpl(); |
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std::cerr << "MEMORY: create(), initial size = " << evmccrt_memory->size() |
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<< std::endl; |
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} |
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// Resizes memory to contain at least _size bytes and returns the base address.
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EXPORT void* evmccrt_memory_require(uint64_t _size) |
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// Resizes memory to contain at least _index + 1 bytes and returns the base address.
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EXPORT uint8_t* evmccrt_memory_require(uint64_t _index) |
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{ |
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std::cerr << "MEMORY: require(), current size = " << evmccrt_memory->size() |
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<< ", required size = " << _size |
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<< std::endl; |
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uint64_t requiredSize = (_index / 32 + 1) * 32; |
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if (evmccrt_memory->size() < _size) |
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evmccrt_memory->resize(_size); |
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if (evmccrt_memory->size() < requiredSize) |
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{ |
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std::cerr << "MEMORY: current size: " << std::dec |
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<< evmccrt_memory->size() << " bytes, required size: " |
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<< requiredSize << " bytes" |
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<< std::endl; |
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evmccrt_memory->resize(requiredSize); |
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} |
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return evmccrt_memory->data(); |
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} |
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EXPORT uint64_t evmccrt_memory_size() |
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{ |
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return evmccrt_memory->size() / 32; |
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} |
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EXPORT void evmccrt_memory_dump(uint64_t _begin, uint64_t _end) |
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{ |
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std::cerr << "Memory dump from " << std::hex << _begin << " to " << std::hex << _end << ":"; |
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if (_end == 0) |
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_end = evmccrt_memory->size(); |
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std::cerr << "MEMORY: active size: " << std::dec |
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<< evmccrt_memory_size() << " words\n"; |
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std::cerr << "MEMORY: dump from " << std::dec |
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<< _begin << " to " << _end << ":"; |
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if (_end <= _begin) |
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return; |
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