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core/vm: clean up EVM environmental structure #31061

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core/vm: clean up EVM environmental structure #31061

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98b4bb9
core/vm: clean up vm
rjl493456442 Jan 20, 2025
e71bbae
core/vm: remove setCodeOptionalHash
rjl493456442 Jan 22, 2025
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6 changes: 3 additions & 3 deletions core/state_processor.go
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Original file line number Diff line number Diff line change
Expand Up @@ -229,7 +229,7 @@ func ProcessBeaconBlockRoot(beaconRoot common.Hash, evm *vm.EVM) {
}
evm.SetTxContext(NewEVMTxContext(msg))
evm.StateDB.AddAddressToAccessList(params.BeaconRootsAddress)
_, _, _ = evm.Call(vm.AccountRef(msg.From), *msg.To, msg.Data, 30_000_000, common.U2560)
_, _, _ = evm.Call(msg.From, *msg.To, msg.Data, 30_000_000, common.U2560)
evm.StateDB.Finalise(true)
}

Expand All @@ -253,7 +253,7 @@ func ProcessParentBlockHash(prevHash common.Hash, evm *vm.EVM) {
}
evm.SetTxContext(NewEVMTxContext(msg))
evm.StateDB.AddAddressToAccessList(params.HistoryStorageAddress)
_, _, err := evm.Call(vm.AccountRef(msg.From), *msg.To, msg.Data, 30_000_000, common.U2560)
_, _, err := evm.Call(msg.From, *msg.To, msg.Data, 30_000_000, common.U2560)
if err != nil {
panic(err)
}
Expand Down Expand Up @@ -292,7 +292,7 @@ func processRequestsSystemCall(requests *[][]byte, evm *vm.EVM, requestType byte
}
evm.SetTxContext(NewEVMTxContext(msg))
evm.StateDB.AddAddressToAccessList(addr)
ret, _, _ := evm.Call(vm.AccountRef(msg.From), *msg.To, msg.Data, 30_000_000, common.U2560)
ret, _, _ := evm.Call(msg.From, *msg.To, msg.Data, 30_000_000, common.U2560)
evm.StateDB.Finalise(true)
if len(ret) == 0 {
return // skip empty output
Expand Down
5 changes: 2 additions & 3 deletions core/state_transition.go
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Original file line number Diff line number Diff line change
Expand Up @@ -423,7 +423,6 @@ func (st *stateTransition) execute() (*ExecutionResult, error) {

var (
msg = st.msg
sender = vm.AccountRef(msg.From)
rules = st.evm.ChainConfig().Rules(st.evm.Context.BlockNumber, st.evm.Context.Random != nil, st.evm.Context.Time)
contractCreation = msg.To == nil
floorDataGas uint64
Expand Down Expand Up @@ -484,7 +483,7 @@ func (st *stateTransition) execute() (*ExecutionResult, error) {
vmerr error // vm errors do not effect consensus and are therefore not assigned to err
)
if contractCreation {
ret, _, st.gasRemaining, vmerr = st.evm.Create(sender, msg.Data, st.gasRemaining, value)
ret, _, st.gasRemaining, vmerr = st.evm.Create(msg.From, msg.Data, st.gasRemaining, value)
} else {
// Increment the nonce for the next transaction.
st.state.SetNonce(msg.From, st.state.GetNonce(msg.From)+1, tracing.NonceChangeEoACall)
Expand All @@ -507,7 +506,7 @@ func (st *stateTransition) execute() (*ExecutionResult, error) {
}

// Execute the transaction's call.
ret, st.gasRemaining, vmerr = st.evm.Call(sender, st.to(), msg.Data, st.gasRemaining, value)
ret, st.gasRemaining, vmerr = st.evm.Call(msg.From, st.to(), msg.Data, st.gasRemaining, value)
}

// Compute refund counter, capped to a refund quotient.
Expand Down
86 changes: 20 additions & 66 deletions core/vm/contract.go
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Original file line number Diff line number Diff line change
Expand Up @@ -22,39 +22,20 @@ import (
"github.com/holiman/uint256"
)

// ContractRef is a reference to the contract's backing object
type ContractRef interface {
Address() common.Address
}

// AccountRef implements ContractRef.
//
// Account references are used during EVM initialisation and
// its primary use is to fetch addresses. Removing this object
// proves difficult because of the cached jump destinations which
// are fetched from the parent contract (i.e. the caller), which
// is a ContractRef.
type AccountRef common.Address

// Address casts AccountRef to an Address
func (ar AccountRef) Address() common.Address { return (common.Address)(ar) }

// Contract represents an ethereum contract in the state database. It contains
// the contract code, calling arguments. Contract implements ContractRef
type Contract struct {
// CallerAddress is the result of the caller which initialised this
// contract. However when the "call method" is delegated this value
// needs to be initialised to that of the caller's caller.
CallerAddress common.Address
caller ContractRef
self ContractRef
// caller is the result of the caller which initialised this
// contract. However, when the "call method" is delegated this
// value needs to be initialised to that of the caller's caller.
caller common.Address
address common.Address

jumpdests map[common.Hash]bitvec // Aggregated result of JUMPDEST analysis.
analysis bitvec // Locally cached result of JUMPDEST analysis

Code []byte
CodeHash common.Hash
CodeAddr *common.Address
Input []byte

// is the execution frame represented by this object a contract deployment
Expand All @@ -66,23 +47,18 @@ type Contract struct {
}

// NewContract returns a new contract environment for the execution of EVM.
func NewContract(caller ContractRef, object ContractRef, value *uint256.Int, gas uint64) *Contract {
c := &Contract{CallerAddress: caller.Address(), caller: caller, self: object}

if parent, ok := caller.(*Contract); ok {
// Reuse JUMPDEST analysis from parent context if available.
c.jumpdests = parent.jumpdests
} else {
c.jumpdests = make(map[common.Hash]bitvec)
func NewContract(caller common.Address, address common.Address, value *uint256.Int, gas uint64, jumpDests map[common.Hash]bitvec) *Contract {
// Initialize the jump analysis map if it's nil, mostly for tests
if jumpDests == nil {
jumpDests = make(map[common.Hash]bitvec)
}
return &Contract{
caller: caller,
address: address,
jumpdests: jumpDests,
Gas: gas,
value: value,
}

// Gas should be a pointer so it can safely be reduced through the run
// This pointer will be off the state transition
c.Gas = gas
// ensures a value is set
c.value = value

return c
}

func (c *Contract) validJumpdest(dest *uint256.Int) bool {
Expand Down Expand Up @@ -132,18 +108,6 @@ func (c *Contract) isCode(udest uint64) bool {
return c.analysis.codeSegment(udest)
}

// AsDelegate sets the contract to be a delegate call and returns the current
// contract (for chaining calls)
func (c *Contract) AsDelegate() *Contract {
// NOTE: caller must, at all times be a contract. It should never happen
// that caller is something other than a Contract.
parent := c.caller.(*Contract)
c.CallerAddress = parent.CallerAddress
c.value = parent.value

return c
}

// GetOp returns the n'th element in the contract's byte array
func (c *Contract) GetOp(n uint64) OpCode {
if n < uint64(len(c.Code)) {
Expand All @@ -158,7 +122,7 @@ func (c *Contract) GetOp(n uint64) OpCode {
// Caller will recursively call caller when the contract is a delegate
// call, including that of caller's caller.
func (c *Contract) Caller() common.Address {
return c.CallerAddress
return c.caller
}

// UseGas attempts the use gas and subtracts it and returns true on success
Expand Down Expand Up @@ -186,26 +150,16 @@ func (c *Contract) RefundGas(gas uint64, logger *tracing.Hooks, reason tracing.G

// Address returns the contracts address
func (c *Contract) Address() common.Address {
return c.self.Address()
return c.address
}

// Value returns the contract's value (sent to it from it's caller)
func (c *Contract) Value() *uint256.Int {
return c.value
}

// SetCallCode sets the code of the contract and address of the backing data
// object
func (c *Contract) SetCallCode(addr *common.Address, hash common.Hash, code []byte) {
// SetCallCode sets the code of the contract,
func (c *Contract) SetCallCode(hash common.Hash, code []byte) {
c.Code = code
c.CodeHash = hash
c.CodeAddr = addr
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This was never used, right? weird...

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I don't know... At least it's not used now

}

// SetCodeOptionalHash can be used to provide code, but it's optional to provide hash.
// In case hash is not provided, the jumpdest analysis will not be saved to the parent context
func (c *Contract) SetCodeOptionalHash(addr *common.Address, codeAndHash *codeAndHash) {
c.Code = codeAndHash.code
c.CodeHash = codeAndHash.hash
c.CodeAddr = addr
}
8 changes: 2 additions & 6 deletions core/vm/eips.go
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Original file line number Diff line number Diff line change
Expand Up @@ -338,13 +338,9 @@ func opExtCodeCopyEIP4762(pc *uint64, interpreter *EVMInterpreter, scope *ScopeC
}
addr := common.Address(a.Bytes20())
code := interpreter.evm.StateDB.GetCode(addr)
contract := &Contract{
Code: code,
self: AccountRef(addr),
}
paddedCodeCopy, copyOffset, nonPaddedCopyLength := getDataAndAdjustedBounds(code, uint64CodeOffset, length.Uint64())
if !contract.IsSystemCall {
statelessGas := interpreter.evm.AccessEvents.CodeChunksRangeGas(addr, copyOffset, nonPaddedCopyLength, uint64(len(contract.Code)), false)
if !scope.Contract.IsSystemCall {
statelessGas := interpreter.evm.AccessEvents.CodeChunksRangeGas(addr, copyOffset, nonPaddedCopyLength, uint64(len(code)), false)
if !scope.Contract.UseGas(statelessGas, interpreter.evm.Config.Tracer, tracing.GasChangeUnspecified) {
scope.Contract.Gas = 0
return nil, ErrOutOfGas
Expand Down
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