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Convenient Memory::require() overload

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This commit is contained in:
Paweł Bylica 2014-10-14 15:19:27 +02:00
parent ab556c638a
commit 0931289287
2 changed files with 12 additions and 3 deletions
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9
evmcc/Memory.cpp
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@ -173,10 +173,15 @@ void Memory::require(llvm::Value* _size)
m_builder.CreateCall(m_require, _size); m_builder.CreateCall(m_require, _size);
} }
void Memory::require(llvm::Value* _offset, llvm::Value* _size)
{
auto sizeRequired = m_builder.CreateAdd(_offset, _size, "sizeRequired");
require(sizeRequired);
}
void Memory::registerReturnData(llvm::Value* _index, llvm::Value* _size) void Memory::registerReturnData(llvm::Value* _index, llvm::Value* _size)
{ {
auto sizeRequired = m_builder.CreateAdd(_index, _size, "sizeRequired"); require(_index, _size); // Make sure that memory is allocated and count gas
require(sizeRequired); // Make sure that memory is allocated and count gas
m_builder.CreateStore(_index, m_returnDataOffset); m_builder.CreateStore(_index, m_returnDataOffset);
m_builder.CreateStore(_size, m_returnDataSize); m_builder.CreateStore(_size, m_returnDataSize);

4
evmcc/Memory.h
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@ -20,8 +20,12 @@ public:
void storeByte(llvm::Value* _addr, llvm::Value* _byte); void storeByte(llvm::Value* _addr, llvm::Value* _byte);
llvm::Value* getSize(); llvm::Value* getSize();
/// Requires this amount of memory. And counts gas fee for that memory.
void require(llvm::Value* _size); void require(llvm::Value* _size);
/// Requires the amount of memory to for data defined by offset and size. And counts gas fee for that memory.
void require(llvm::Value* _offset, llvm::Value* _size);
void registerReturnData(llvm::Value* _index, llvm::Value* _size); void registerReturnData(llvm::Value* _index, llvm::Value* _size);
static dev::bytesConstRef getReturnData(); static dev::bytesConstRef getReturnData();