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Refactoring eip-4844 #2752

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6635947
updates to the blob transaction
anvacaru Apr 29, 2025
2cf7760
update conformance failing.llvm
anvacaru Apr 29, 2025
28df445
add inline documentation
anvacaru Apr 30, 2025
2958652
remove AccountNotNil unused sort
anvacaru Apr 30, 2025
3ab227b
update failing.llvm files
anvacaru Apr 30, 2025
82df509
update expected output
anvacaru Apr 30, 2025
f013457
Merge branch 'master' into eip-4844-refactor
anvacaru Apr 30, 2025
de5e9a3
update expected output 2
anvacaru Apr 30, 2025
feef89f
update proofs
anvacaru Apr 30, 2025
520dfaa
Merge branch 'master' into eip-4844-refactor
anvacaru May 1, 2025
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35 changes: 28 additions & 7 deletions kevm-pyk/src/kevm_pyk/kproj/evm-semantics/driver.md
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Original file line number Diff line number Diff line change
Expand Up @@ -75,6 +75,28 @@ To do so, we'll extend sort `JSON` with some EVM specific syntax, and provide a
- `finishTx` is a place-holder for performing necessary cleanup after a transaction.

```k
syntax InternalOp ::= "#deductBlobGas"
// --------------------------------------
rule <k> #deductBlobGas => .K ... </k>
<schedule> SCHED </schedule>
<excessBlobGas> EXCESS_BLOB_GAS </excessBlobGas>
<origin> ACCTFROM </origin>
<account>
<acctID> ACCTFROM </acctID>
<balance> BAL => BAL -Int Cblobfee(SCHED, EXCESS_BLOB_GAS, size(TVH)) </balance>
...
</account>
<txPending> ListItem(TXID:Int) ... </txPending>
<message>
<msgID> TXID </msgID>
<txVersionedHashes> TVH </txVersionedHashes>
<txType> Blob </txType>
...
</message>
requires Ghasblobbasefee << SCHED >>

rule <k> #deductBlobGas => .K ... </k> [owise]

syntax EthereumCommand ::= "startTx"
// ------------------------------------
rule <k> startTx => #finalizeBlock ... </k>
Expand Down Expand Up @@ -108,6 +130,7 @@ To do so, we'll extend sort `JSON` with some EVM specific syntax, and provide a

rule <k> loadTx(ACCTFROM)
=> #accessAccounts ACCTFROM #newAddr(ACCTFROM, NONCE) #precompiledAccountsSet(SCHED)
~> #deductBlobGas
~> #loadAccessList(TA)
~> #checkCreate ACCTFROM VALUE
~> #create ACCTFROM #newAddr(ACCTFROM, NONCE) VALUE CODE
Expand All @@ -128,24 +151,23 @@ To do so, we'll extend sort `JSON` with some EVM specific syntax, and provide a
<value> VALUE </value>
<data> CODE </data>
<txAccess> TA </txAccess>
<txVersionedHashes> TVH </txVersionedHashes>
...
</message>
<versionedHashes> _ => TVH </versionedHashes>
<account>
<acctID> ACCTFROM </acctID>
<balance> BAL => BAL -Int (GLIMIT *Int #effectiveGasPrice(TXID)) </balance>
<nonce> NONCE </nonce>
<code> ACCTCODE </code>
...
</account>
<accessedAccounts> _ => #if Ghaswarmcoinbase << SCHED >> #then SetItem(MINER) #else .Set #fi </accessedAccounts>
<touchedAccounts> _ => SetItem(MINER) </touchedAccounts>
requires #hasValidInitCode(lengthBytes(CODE), SCHED)
andBool ACCTCODE ==K .Bytes
andBool #isValidTransaction(TXID, ACCTFROM)


rule <k> loadTx(ACCTFROM)
=> #accessAccounts ACCTFROM ACCTTO #precompiledAccountsSet(SCHED)
~> #deductBlobGas
~> #loadAccessList(TA)
~> #checkCall ACCTFROM VALUE
~> #call ACCTFROM ACCTTO ACCTTO VALUE VALUE DATA false
Expand Down Expand Up @@ -174,16 +196,15 @@ To do so, we'll extend sort `JSON` with some EVM specific syntax, and provide a
<acctID> ACCTFROM </acctID>
<balance> BAL => BAL -Int (GLIMIT *Int #effectiveGasPrice(TXID)) </balance>
<nonce> NONCE => NONCE +Int 1 </nonce>
<code> ACCTCODE </code>
...
</account>
<accessedAccounts> _ => #if Ghaswarmcoinbase << SCHED >> #then SetItem(MINER) #else .Set #fi </accessedAccounts>
<touchedAccounts> _ => SetItem(MINER) </touchedAccounts>
requires ACCTTO =/=K .Account
andBool ACCTCODE ==K .Bytes
andBool #isValidTransaction(TXID, ACCTFROM)

rule <k> loadTx(ACCTFROM) => startTx ... </k>
<statusCode> _ => EVMC_FAILURE </statusCode>
<statusCode> _ => EVMC_INVALID_BLOCK </statusCode>
<txPending> ListItem(_TXID:Int) REST => REST </txPending>
<account>
<acctID> ACCTFROM </acctID>
Expand Down
22 changes: 8 additions & 14 deletions kevm-pyk/src/kevm_pyk/kproj/evm-semantics/evm-types.md
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Original file line number Diff line number Diff line change
Expand Up @@ -337,8 +337,6 @@ Bytes helper functions
- `#asInteger` will interpret a stack of bytes as a single arbitrary-precision integer (with MSB first).
- `#asAccount` will interpret a stack of bytes as a single account id (with MSB first).
Differs from `#asWord` only in that an empty stack represents the empty account, not account zero.
- `asAccountNotNil` will interpret a stack of bytes as a single account id (with MSB first), but will fail if the
stack is empty.
- `#asByteStack` will split a single word up into a `Bytes`.
- `#range(WS, N, W)` access the range of `WS` beginning with `N` of width `W`.
- `#padToWidth(N, WS)` and `#padRightToWidth` make sure that a `Bytes` is the correct size.
Expand All @@ -353,13 +351,10 @@ Bytes helper functions
rule #asInteger(WS) => Bytes2Int(WS, BE, Unsigned) [concrete]

syntax Account ::= #asAccount ( Bytes ) [symbol(#asAccount), function]
syntax AccountNotNil ::= #asAccountNotNil ( Bytes ) [symbol(#asAccountNotNil), function]
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------
rule #asAccount(BS) => .Account requires lengthBytes(BS) ==Int 0
rule #asAccount(BS) => #asWord(BS) [owise]

rule #asAccountNotNil(BS) => #asWord(BS) requires lengthBytes(BS) >Int 0

syntax Bytes ::= #asByteStack ( Int ) [symbol(#asByteStack), function, total]
// -----------------------------------------------------------------------------
rule #asByteStack(W) => Int2Bytes(W, BE, Unsigned) [concrete]
Expand Down Expand Up @@ -390,8 +385,7 @@ Accounts

```k
syntax Account ::= ".Account" | Int
syntax AccountNotNil = Int
// --------------------------
// -----------------------------------

syntax AccountCode ::= Bytes
// ----------------------------
Expand Down Expand Up @@ -468,12 +462,12 @@ Productions related to transactions
syntax TxData ::= LegacyTx | AccessListTx | DynamicFeeTx | BlobTx
// -----------------------------------------------------------------

syntax LegacyTx ::= LegacyTxData ( nonce: Int, gasPrice: Int, gasLimit: Int, to: Account, value: Int, data: Bytes ) [symbol(LegacyTxData)]
| LegacySignedTxData ( nonce: Int, gasPrice: Int, gasLimit: Int, to: Account, value: Int, data: Bytes, networkChainId: Int ) [symbol(LegacySignedTxData)]
syntax AccessListTx ::= AccessListTxData ( nonce: Int, gasPrice: Int, gasLimit: Int, to: Account, value: Int, data: Bytes, chainId: Int, accessLists: JSONs ) [symbol(AccessListTxData)]
syntax DynamicFeeTx ::= DynamicFeeTxData ( nonce: Int, priorityGasFee: Int, maxGasFee: Int, gasLimit: Int, to: Account, value: Int, data: Bytes, chainId: Int, accessLists: JSONs) [symbol(DynamicFeeTxData)]
syntax BlobTx ::= BlobTxData ( nonce: Int, priorityGasFee: Int, maxGasFee: Int, gasLimit: Int, to: AccountNotNil, value: Int, data: Bytes, chainId: Int, accessLists: JSONs, maxBlobGasFee: Int, blobVersionedHashes: List ) [symbol(BlobTxData)]
// ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
syntax LegacyTx ::= LegacyTxData ( nonce: Int, gasPrice: Int, gasLimit: Int, to: Account, value: Int, data: Bytes ) [symbol(LegacyTxData)]
| LegacySignedTxData ( nonce: Int, gasPrice: Int, gasLimit: Int, to: Account, value: Int, data: Bytes, networkChainId: Int ) [symbol(LegacySignedTxData)]
syntax AccessListTx ::= AccessListTxData ( nonce: Int, gasPrice: Int, gasLimit: Int, to: Account, value: Int, data: Bytes, chainId: Int, accessLists: JSONs ) [symbol(AccessListTxData)]
syntax DynamicFeeTx ::= DynamicFeeTxData ( nonce: Int, priorityGasFee: Int, maxGasFee: Int, gasLimit: Int, to: Account, value: Int, data: Bytes, chainId: Int, accessLists: JSONs) [symbol(DynamicFeeTxData)]
syntax BlobTx ::= BlobTxData ( nonce: Int, priorityGasFee: Int, maxGasFee: Int, gasLimit: Int, to: Account, value: Int, data: Bytes, chainId: Int, accessLists: JSONs, maxBlobGasFee: Int, blobVersionedHashes: List ) [symbol(BlobTxData)]
// ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

endmodule
```
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