Resumable EVM and heap-allocated callstack (#9360)

* Add new Vm trappable interface

* Exec/Resume interface

* Basic implementation of CallCreateExecutive

* Implement resume_call and resume_create for executive

* Move convertion to call/create result to separate function

* Implement consume that converts resumable to non-resumable

* Use consume for Executive::call/create

* Resumable EVM

* Implement tracing mode without needing subtracers

* Implement vmtracer so it doesn't require extra structs for subtracing

* Use the new tracing mode in executive

* Fix most of the linting errors for cargo build

* Add the concept of stack_depth

* Add back crossbeam

* Fix some test compile

* Fix prefix address test

* Fix evm crate tests

* Fix wasm crate test compile

* Fix wasm runner compile

* Fix jsontests compile

* Fix evmbin compile

* Fix an issue with create nonce and better vm tracing interface

* Fix linting

* Fix evmbin compile

* Fix unconfirmed_substate and static_flag

* Fix an issue in create address logic

* Fix top-level tracing

* Handle builtin tracing

* Fix suicide and reward tracing index stack

* Fix an issue where trap conflicts with tracing

* Fix an issue in parent step vm tracing

* Fix revert tracing

* Fix evmbin tests

* Remove params clone

* Fix TODO proofs

* Fix jsontests compile

* Fix evmbin merge issue

* Fix wasm merge issue

* Fix wasm test

* Fix ethcore merge warnings

* Fix evmbin compile

* Better expect messages and add some trace::skip_one asserts

ethcore/src/json_tests/executive.rs

@@ -88,7 +88,7 @@ impl<'a, T: 'a, V: 'a, B: 'a> TestExt<'a, T, V, B>
 		machine: &'a Machine,
 		schedule: &'a Schedule,
 		depth: usize,
-		origin_info: OriginInfo,
+		origin_info: &'a OriginInfo,
 		substate: &'a mut Substate,
 		output: OutputPolicy,
 		address: Address,
@@ -98,7 +98,7 @@ impl<'a, T: 'a, V: 'a, B: 'a> TestExt<'a, T, V, B>
 		let static_call = false;
 		Ok(TestExt {
 			nonce: state.nonce(&address)?,
-			ext: Externalities::new(state, info, machine, schedule, depth, origin_info, substate, output, tracer, vm_tracer, static_call),
+			ext: Externalities::new(state, info, machine, schedule, depth, 0, origin_info, substate, output, tracer, vm_tracer, static_call),
 			callcreates: vec![],
 			sender: address,
 		})
@@ -140,7 +140,14 @@ impl<'a, T: 'a, V: 'a, B: 'a> Ext for TestExt<'a, T, V, B>
 		self.ext.blockhash(number)
 	}
 
-	fn create(&mut self, gas: &U256, value: &U256, code: &[u8], address: CreateContractAddress) -> ContractCreateResult {
+	fn create(
+		&mut self,
+		gas: &U256,
+		value: &U256,
+		code: &[u8],
+		address: CreateContractAddress,
+		_trap: bool
+	) -> Result<ContractCreateResult, vm::TrapKind> {
 		self.callcreates.push(CallCreate {
 			data: code.to_vec(),
 			destination: None,
@@ -148,25 +155,27 @@ impl<'a, T: 'a, V: 'a, B: 'a> Ext for TestExt<'a, T, V, B>
 			value: *value
 		});
 		let contract_address = contract_address(address, &self.sender, &self.nonce, &code).0;
-		ContractCreateResult::Created(contract_address, *gas)
+		Ok(ContractCreateResult::Created(contract_address, *gas))
 	}
 
-	fn call(&mut self,
+	fn call(
+		&mut self,
 		gas: &U256,
 		_sender_address: &Address,
 		receive_address: &Address,
 		value: Option<U256>,
 		data: &[u8],
 		_code_address: &Address,
-		_call_type: CallType
-	) -> MessageCallResult {
+		_call_type: CallType,
+		_trap: bool
+	) -> Result<MessageCallResult, vm::TrapKind> {
 		self.callcreates.push(CallCreate {
 			data: data.to_vec(),
 			destination: Some(receive_address.clone()),
 			gas_limit: *gas,
 			value: value.unwrap()
 		});
-		MessageCallResult::Success(*gas, ReturnData::empty())
+		Ok(MessageCallResult::Success(*gas, ReturnData::empty()))
 	}
 
 	fn extcode(&self, address: &Address) -> vm::Result<Option<Arc<Bytes>>>  {
@@ -270,6 +279,7 @@ fn do_json_test_for<H: FnMut(&str, HookType)>(vm_type: &VMType, json_data: &[u8]
 		let mut tracer = NoopTracer;
 		let mut vm_tracer = NoopVMTracer;
 		let vm_factory = state.vm_factory();
+		let origin_info = OriginInfo::from(&params);
 
 		// execute
 		let (res, callcreates) = {
@@ -280,7 +290,7 @@ fn do_json_test_for<H: FnMut(&str, HookType)>(vm_type: &VMType, json_data: &[u8]
 				&machine,
 				&schedule,
 				0,
-				OriginInfo::from(&params),
+				&origin_info,
 				&mut substate,
 				OutputPolicy::Return,
 				params.address.clone(),
@@ -288,7 +298,7 @@ fn do_json_test_for<H: FnMut(&str, HookType)>(vm_type: &VMType, json_data: &[u8]
 				&mut vm_tracer,
 			));
 			let mut evm = vm_factory.create(params, &schedule, 0);
-			let res = evm.exec(&mut ex);
+			let res = evm.exec(&mut ex).ok().expect("TestExt never trap; resume error never happens; qed");
 			// a return in finalize will not alter callcreates
 			let callcreates = ex.callcreates.clone();
 			(res.finalize(ex), callcreates)