nimbus-eth1/nimbus/vm_types.nim

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# Nimbus
# Copyright (c) 2018 Status Research & Development GmbH
# Licensed under either of
# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
# * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
# at your option. This file may not be copied, modified, or distributed except according to those terms.
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import
tables, eth_common, options,
./constants, json, sets,
./vm/[memory, stack, code_stream],
./vm/interpreter/[gas_costs, opcode_values, vm_forks], # TODO - will be hidden at a lower layer
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./db/[db_chain, state_db]
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type
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BaseVMState* = ref object of RootObj
prevHeaders* : seq[BlockHeader]
chaindb* : BaseChainDB
accessLogs* : AccessLogs
blockHeader* : BlockHeader
name* : string
tracingEnabled*: bool
tracer* : TransactionTracer
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logEntries* : seq[Log]
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receipts* : seq[Receipt]
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accountDb* : AccountStateDB
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AccessLogs* = ref object
reads*: Table[string, string]
writes*: Table[string, string]
TracerFlags* {.pure.} = enum
EnableTracing
DisableStorage
DisableMemory
DisableStack
DisableState
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DisableStateDiff
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EnableAccount
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TransactionTracer* = object
trace*: JsonNode
gasRemaining*: GasInt
flags*: set[TracerFlags]
accounts*: HashSet[EthAddress]
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OpcodeExecutor* = proc(computation: var BaseComputation)
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BaseComputation* = ref object of RootObj
# The execution computation
vmState*: BaseVMState
msg*: Message
memory*: Memory
stack*: Stack
gasMeter*: GasMeter
code*: CodeStream
children*: seq[BaseComputation]
rawOutput*: seq[byte]
Refactor interpreter dispatch (#65) * move forks constants, rename errors * Move vm/utils to vm/interpreter/utils * initial opcodes refactoring * Add refactored Comparison & Bitwise Logic Operations * Add sha3 and address, simplify macro, support pop 0 * balance, origin, caller, callValue * fix gas copy opcodes gas costs, add callDataLoad/Size/Copy, CodeSize/Copy and gas price opcode * Update with 30s, 40s, 50s opcodes + impl of balance + stack improvement * add push, dup, swap, log, create and call operations * finish opcode implementation * Add the new dispatching logic * Pass the opcode test * Make test_vm_json compile * halt execution without exceptions for Return, Revert, selfdestruct (fix #62) * Properly catch and recover from EVM exceptions (stack underflow ...) * Fix byte op * Fix jump regressions * Update for latest devel, don't import old dispatch code as quasiBoolean macro is broken by latest devel * Fix sha3 regression on empty memory slice and until end of range slice * Fix padding / range error on expXY_success (gas computation left) * update logging procs * Add tracing - expXY_success is not a regression, sload stub was accidentally passing the test * Reuse the same stub as OO implementation * Delete previous opcode implementation * Delete object oriented fork code * Delete exceptions that were used as control flows * delete base.nim :fire:, yet another OO remnants * Delete opcode table * Enable omputed gotos and compile-time gas fees * Revert const gasCosts -> generates SIGSEGV * inline push, swap and dup opcodes * loggers are now template again, why does this pass new tests? * Trigger CI rebuild after rocksdb fix https://github.com/status-im/nim-rocksdb/pull/5 * Address review comment on "push" + VMTests in debug mode (not release) * Address review comment: don't tag fork by default, make opcode impl grepable * Static compilation fixes after rebasing * fix the initialization of the VM database * add a missing import * Deactivate balance and sload test following #59 * Reactivate stack check (deactivated in #59, necessary to pass tests) * Merge remaining opcodes implementation from #59 * Merge callDataLoad and codeCopy fixes, todo simplify see #67
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returnData*: seq[byte]
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error*: Error
shouldEraseReturnData*: bool
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accountsToDelete*: Table[EthAddress, EthAddress]
opcodes*: Table[Op, proc(computation: var BaseComputation){.nimcall.}]
gasCosts*: GasCosts # TODO - will be hidden at a lower layer
opCodeExec*: OpcodeExecutor
forkOverride*: Option[Fork]
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Error* = ref object
info*: string
burnsGas*: bool
erasesReturnData*: bool
Opcode* = ref object of RootObj
# TODO can't use a stack-allocated object because
# "BaseComputation is not a concrete type"
# TODO: We can probably remove this.
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kind*: Op
runLogic*: proc(computation: var BaseComputation)
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GasMeter* = object
gasRefunded*: GasInt
startGas*: GasInt
gasRemaining*: GasInt
CallKind* = enum
evmcCall = 0, # CALL
evmcDelegateCall = 1, # DELEGATECALL
evmcCallCode = 2, # CALLCODE
evmcCreate = 3, # CREATE
evmcCreate2 = 4 # CREATE2
MsgFlags* = enum
emvcNoFlags = 0
emvcStatic = 1
Message* = ref object
# A message for VM computation
# https://github.com/ethereum/evmc/blob/master/include/evmc/evmc.h
# depth = None
# code = None
# codeAddress = None
# createAddress = None
# logger = logging.getLogger("evm.vm.message.Message")
destination*: EthAddress
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sender*: EthAddress
value*: UInt256
data*: seq[byte]
# size_t input_size;
codeHash*: UInt256
create2Salt*: Uint256
gas*: GasInt
gasPrice*: GasInt
depth*: int
kind*: CallKind
flags*: MsgFlags
# Not in EVMC API
# TODO: Done via callback function (v)table in EVMC
code*: seq[byte]
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internalOrigin*: EthAddress
internalCodeAddress*: EthAddress
internalStorageAddress*: EthAddress
MessageOptions* = ref object
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origin*: EthAddress
depth*: int
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createAddress*: EthAddress
codeAddress*: EthAddress
flags*: MsgFlags