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core, params, beacon/engine: implement EIP 4788 BeaconRoot (#27849)

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This change implements "EIP 4788 : Beacon block root in the EVM". It implements version-2 of EPI-4788, main difference being that the contract is an actual contract rather than a precompile, as in #27289.
This commit is contained in:
Martin Holst Swende
2023-08-22 08:33:39 -04:00
committed by GitHub
parent 0b4b299099
commit b8d38e76ef
19 changed files with 436 additions and 187 deletions
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consensus/beacon/consensus.go
+14 -8
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@@ -269,15 +269,21 @@ func (beacon *Beacon) verifyHeader(chain consensus.ChainHeaderReader, header, pa
if !shanghai && header.WithdrawalsHash != nil {
return fmt.Errorf("invalid withdrawalsHash: have %x, expected nil", header.WithdrawalsHash)
}
// Verify the existence / non-existence of excessBlobGas
// Verify the existence / non-existence of cancun-specific header fields
cancun := chain.Config().IsCancun(header.Number, header.Time)
if !cancun && header.ExcessBlobGas != nil {
return fmt.Errorf("invalid excessBlobGas: have %d, expected nil", header.ExcessBlobGas)
}
if !cancun && header.BlobGasUsed != nil {
return fmt.Errorf("invalid blobGasUsed: have %d, expected nil", header.BlobGasUsed)
}
if cancun {
if !cancun {
switch {
case header.ExcessBlobGas != nil:
return fmt.Errorf("invalid excessBlobGas: have %d, expected nil", header.ExcessBlobGas)
case header.BlobGasUsed != nil:
return fmt.Errorf("invalid blobGasUsed: have %d, expected nil", header.BlobGasUsed)
case header.BeaconRoot != nil:
return fmt.Errorf("invalid beaconRoot, have %#x, expected nil", header.BeaconRoot)
}
} else {
if header.BeaconRoot == nil {
return errors.New("header is missing beaconRoot")
}
if err := eip4844.VerifyEIP4844Header(parent, header); err != nil {
return err
}