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core/evm: RANDOM opcode (EIP-4399) (#24141)

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* core: implement eip-4399 random opcode

* core: make vmconfig threadsafe

* core: miner: pass vmConfig by value not reference

* all: enable 4399 by Rules

* core: remove diff (f)

* tests: set proper difficulty (f)

* smaller diff (f)

* eth/catalyst: nit

* core: make RANDOM a pointer which is only set post-merge

* cmd/evm/internal/t8ntool: fix t8n tracing of 4399

* tests: set difficulty

* cmd/evm/internal/t8ntool: check that baserules are london before applying the merge chainrules
This commit is contained in:
Marius van der Wijden
2022-01-10 08:44:21 +01:00
committed by GitHub
parent 1884f37f2c
commit b1e72f7ea9
21 changed files with 124 additions and 29 deletions
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7
cmd/evm/internal/t8ntool/execution.go
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@ -67,6 +67,7 @@ type ommer struct {
type stEnv struct {
Coinbase common.Address `json:"currentCoinbase" gencodec:"required"`
Difficulty *big.Int `json:"currentDifficulty"`
Random *big.Int `json:"currentRandom"`
ParentDifficulty *big.Int `json:"parentDifficulty"`
GasLimit uint64 `json:"currentGasLimit" gencodec:"required"`
Number uint64 `json:"currentNumber" gencodec:"required"`
@ -81,6 +82,7 @@ type stEnv struct {
type stEnvMarshaling struct {
Coinbase common.UnprefixedAddress
Difficulty *math.HexOrDecimal256
Random *math.HexOrDecimal256
ParentDifficulty *math.HexOrDecimal256
GasLimit math.HexOrDecimal64
Number math.HexOrDecimal64
@ -139,6 +141,11 @@ func (pre *Prestate) Apply(vmConfig vm.Config, chainConfig *params.ChainConfig,
if pre.Env.BaseFee != nil {
vmContext.BaseFee = new(big.Int).Set(pre.Env.BaseFee)
}
// If random is defined, add it to the vmContext.
if pre.Env.Random != nil {
rnd := common.BigToHash(pre.Env.Random)
vmContext.Random = &rnd
}
// If DAO is supported/enabled, we need to handle it here. In geth 'proper', it's
// done in StateProcessor.Process(block, ...), right before transactions are applied.
if chainConfig.DAOForkSupport &&

6
cmd/evm/internal/t8ntool/gen_stenv.go
View File

@ -18,6 +18,7 @@ func (s stEnv) MarshalJSON() ([]byte, error) {
type stEnv struct {
Coinbase common.UnprefixedAddress `json:"currentCoinbase" gencodec:"required"`
Difficulty *math.HexOrDecimal256 `json:"currentDifficulty"`
Random *math.HexOrDecimal256 `json:"currentRandom"`
ParentDifficulty *math.HexOrDecimal256 `json:"parentDifficulty"`
GasLimit math.HexOrDecimal64 `json:"currentGasLimit" gencodec:"required"`
Number math.HexOrDecimal64 `json:"currentNumber" gencodec:"required"`
@ -31,6 +32,7 @@ func (s stEnv) MarshalJSON() ([]byte, error) {
var enc stEnv
enc.Coinbase = common.UnprefixedAddress(s.Coinbase)
enc.Difficulty = (*math.HexOrDecimal256)(s.Difficulty)
enc.Random = (*math.HexOrDecimal256)(s.Random)
enc.ParentDifficulty = (*math.HexOrDecimal256)(s.ParentDifficulty)
enc.GasLimit = math.HexOrDecimal64(s.GasLimit)
enc.Number = math.HexOrDecimal64(s.Number)
@ -48,6 +50,7 @@ func (s *stEnv) UnmarshalJSON(input []byte) error {
type stEnv struct {
Coinbase *common.UnprefixedAddress `json:"currentCoinbase" gencodec:"required"`
Difficulty *math.HexOrDecimal256 `json:"currentDifficulty"`
Random *math.HexOrDecimal256 `json:"currentRandom"`
ParentDifficulty *math.HexOrDecimal256 `json:"parentDifficulty"`
GasLimit *math.HexOrDecimal64 `json:"currentGasLimit" gencodec:"required"`
Number *math.HexOrDecimal64 `json:"currentNumber" gencodec:"required"`
@ -69,6 +72,9 @@ func (s *stEnv) UnmarshalJSON(input []byte) error {
if dec.Difficulty != nil {
s.Difficulty = (*big.Int)(dec.Difficulty)
}
if dec.Random != nil {
s.Random = (*big.Int)(dec.Random)
}
if dec.ParentDifficulty != nil {
s.ParentDifficulty = (*big.Int)(dec.ParentDifficulty)
}

4
cmd/evm/internal/t8ntool/transition.go
View File

@ -252,6 +252,10 @@ func Transition(ctx *cli.Context) error {
return NewError(ErrorConfig, errors.New("EIP-1559 config but missing 'currentBaseFee' in env section"))
}
}
// Sanity check, to not `panic` in state_transition
if prestate.Env.Random != nil && !chainConfig.IsLondon(big.NewInt(int64(prestate.Env.Number))) {
return NewError(ErrorConfig, errors.New("can only apply RANDOM on top of London chainrules"))
}
if env := prestate.Env; env.Difficulty == nil {
// If difficulty was not provided by caller, we need to calculate it.
switch {