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https://github.com/status-im/nimbus-eth1.git
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0a4c34f13b
overview: can be verified by running "make check_vm2 X=0" in the nimbus directory (be patient when running it.) the X=0 flag is necessary if there is a native NIM compiler which may bail out at some vendor imports. details: when compiling state_transaction.nim, the nim flag vm2_enabled must be set in order to avoid implicit import of native VM definitions.
58 lines
1.8 KiB
Nim
58 lines
1.8 KiB
Nim
# Nimbus
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# Copyright (c) 2018 Status Research & Development GmbH
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# Licensed under either of
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
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# http://www.apache.org/licenses/LICENSE-2.0)
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# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
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# http://opensource.org/licenses/MIT)
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# at your option. This file may not be copied, modified, or distributed except
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# according to those terms.
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## EVM Opcode Handlers: Common Helper Functions
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## ============================================
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##
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import
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../../../db/accounts_cache,
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../../../errors,
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../../state,
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../../types,
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../gas_costs,
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../gas_meter,
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eth/common,
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eth/common/eth_types,
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macros,
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stint
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# ------------------------------------------------------------------------------
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# Public
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# ------------------------------------------------------------------------------
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proc gasEip2929AccountCheck*(c: Computation;
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address: EthAddress, prevCost = 0.GasInt) =
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c.vmState.mutateStateDB:
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let gasCost = if not db.inAccessList(address):
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db.accessList(address)
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ColdAccountAccessCost
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else:
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WarmStorageReadCost
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c.gasMeter.consumeGas(
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gasCost - prevCost,
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reason = "gasEIP2929AccountCheck")
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template checkInStaticContext*(c: Computation) =
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## Verify static context in handler function, raise an error otherwise
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if emvcStatic == c.msg.flags:
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# TODO: if possible, this check only appear
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# when fork >= FkByzantium
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raise newException(
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StaticContextError,
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"Cannot modify state while inside of STATICCALL context")
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# ------------------------------------------------------------------------------
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# End
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# ------------------------------------------------------------------------------
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