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BLOCKHASH instruction

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This commit is contained in:
Paweł Bylica 2015-01-08 11:10:10 +01:00
parent 681adc12af
commit 7b9d4956a5
4 changed files with 24 additions and 0 deletions
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5
libevmjit-cpp/Env.cpp
View file

@ -42,6 +42,11 @@ extern "C"
*o_value = eth2llvm(u);
}
EXPORT void env_blockhash(ExtVMFace* _env, i256* _number, h256* o_hash)
{
*o_hash = _env->prevhash(llvm2eth(*_number));
}
EXPORT void env_create(ExtVMFace* _env, i256* io_gas, i256* _endowment, byte* _initBeg, uint64_t _initSize, h256* o_address)
{
auto endowment = llvm2eth(*_endowment);

8
libevmjit/Compiler.cpp
View file

@ -645,6 +645,14 @@ void Compiler::compileBasicBlock(BasicBlock& _basicBlock, bytes const& _bytecode
break;
}
case Instruction::BLOCKHASH:
{
auto number = stack.pop();
auto hash = _ext.blockhash(number);
stack.push(hash);
break;
}
case Instruction::BALANCE:
{
auto address = stack.pop();

9
libevmjit/Ext.cpp
View file

@ -45,6 +45,7 @@ std::array<FuncDesc, sizeOf<EnvFunc>::value> const& getEnvFuncDescs()
FuncDesc{"env_create", getFunctionType(Type::Void, {Type::EnvPtr, Type::WordPtr, Type::WordPtr, Type::BytePtr, Type::Size, Type::WordPtr})},
FuncDesc{"env_call", getFunctionType(Type::Bool, {Type::EnvPtr, Type::WordPtr, Type::WordPtr, Type::WordPtr, Type::BytePtr, Type::Size, Type::BytePtr, Type::Size, Type::WordPtr})},
FuncDesc{"env_log", getFunctionType(Type::Void, {Type::EnvPtr, Type::BytePtr, Type::Size, Type::WordPtr, Type::WordPtr, Type::WordPtr, Type::WordPtr})},
FuncDesc{"env_blockhash", getFunctionType(Type::Void, {Type::EnvPtr, Type::WordPtr, Type::WordPtr})},
FuncDesc{"env_getExtCode", getFunctionType(Type::BytePtr, {Type::EnvPtr, Type::WordPtr, Type::Size->getPointerTo()})},
FuncDesc{"ext_calldataload", getFunctionType(Type::Void, {Type::RuntimeDataPtr, Type::WordPtr, Type::WordPtr})},
}};
@ -117,6 +118,14 @@ llvm::Value* Ext::balance(llvm::Value* _address)
return m_builder.CreateLoad(ret);
}
llvm::Value* Ext::blockhash(llvm::Value* _number)
{
auto hash = getArgAlloca();
createCall(EnvFunc::blockhash, {getRuntimeManager().getEnvPtr(), byPtr(_number), hash});
hash = m_builder.CreateLoad(hash);
return Endianness::toNative(getBuilder(), hash);
}
llvm::Value* Ext::create(llvm::Value*& _gas, llvm::Value* _endowment, llvm::Value* _initOff, llvm::Value* _initSize)
{
auto gas = byPtr(_gas);

2
libevmjit/Ext.h
View file

@ -33,6 +33,7 @@ enum class EnvFunc
create,
call,
log,
blockhash,
getExtCode,
calldataload, // Helper function, not client Env interface
@ -51,6 +52,7 @@ public:
llvm::Value* calldataload(llvm::Value* _index);
llvm::Value* create(llvm::Value*& _gas, llvm::Value* _endowment, llvm::Value* _initOff, llvm::Value* _initSize);
llvm::Value* call(llvm::Value*& _gas, llvm::Value* _receiveAddress, llvm::Value* _value, llvm::Value* _inOff, llvm::Value* _inSize, llvm::Value* _outOff, llvm::Value* _outSize, llvm::Value* _codeAddress);
llvm::Value* blockhash(llvm::Value* _number);
llvm::Value* sha3(llvm::Value* _inOff, llvm::Value* _inSize);
MemoryRef getExtCode(llvm::Value* _addr);