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Refactor #isPrecompiledAccount to support non-consecutive accounts #2829

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Refactor #isPrecompiledAccount to support non-consecutive accounts #2829

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56 changes: 24 additions & 32 deletions kevm-pyk/src/kevm_pyk/kproj/evm-semantics/evm.md
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Original file line number Diff line number Diff line change
Expand Up @@ -1691,7 +1691,7 @@ The various `CALL*` (and other inter-contract control flow) operations will be d

syntax Bool ::= #isPrecompiledAccount ( Int , Schedule ) [symbol(isPrecompiledAccount), function, total, smtlib(isPrecompiledAccount)]
// --------------------------------------------------------------------------------------------------------------------------------------
rule [isPrecompiledAccount]: #isPrecompiledAccount(ACCTCODE, SCHED) => 0 <Int ACCTCODE andBool ACCTCODE <=Int #precompiledAccountsUB(SCHED)
rule [isPrecompiledAccount]: #isPrecompiledAccount(ACCTCODE, SCHEDULE) => ACCTCODE in #precompiledAccountsSet(SCHEDULE)

syntax KItem ::= "#initVM"
// --------------------------
Expand Down Expand Up @@ -2145,9 +2145,8 @@ Self destructing to yourself, unlike a regular transfer, destroys the balance in
Precompiled Contracts
---------------------

- `#precompiled` is a placeholder for the pre-compiled contracts of a given schedule. These contracts are located at contiguous addresses starting from 1.
- `#precompiledAccountsUB` returns the highest address (upper bound) of the precompiled contract accounts
- `#precompiledAccountsSet` returns the set of addresses of the precompiled contract accounts
- `#precompiled` is a placeholder for the pre-compiled contracts of a given schedule.
- `#precompiledAccountsSet` returns the set of addresses of the precompiled contract accounts for each schedule.

```k
syntax NullStackOp ::= PrecompiledOp
Expand All @@ -2171,34 +2170,27 @@ Precompiled Contracts
rule #precompiled(16) => BLS12_MAP_FP_TO_G1
rule #precompiled(17) => BLS12_MAP_FP2_TO_G2


syntax Int ::= #precompiledAccountsUB ( Schedule ) [symbol(#precompiledAccountsUB), function, total]
// ----------------------------------------------------------------------------------------------------
rule #precompiledAccountsUB(DEFAULT) => 4
rule #precompiledAccountsUB(FRONTIER) => #precompiledAccountsUB(DEFAULT)
rule #precompiledAccountsUB(HOMESTEAD) => #precompiledAccountsUB(FRONTIER)
rule #precompiledAccountsUB(TANGERINE_WHISTLE) => #precompiledAccountsUB(HOMESTEAD)
rule #precompiledAccountsUB(SPURIOUS_DRAGON) => #precompiledAccountsUB(TANGERINE_WHISTLE)
rule #precompiledAccountsUB(BYZANTIUM) => 8
rule #precompiledAccountsUB(CONSTANTINOPLE) => #precompiledAccountsUB(BYZANTIUM)
rule #precompiledAccountsUB(PETERSBURG) => #precompiledAccountsUB(CONSTANTINOPLE)
rule #precompiledAccountsUB(ISTANBUL) => 9
rule #precompiledAccountsUB(BERLIN) => #precompiledAccountsUB(ISTANBUL)
rule #precompiledAccountsUB(LONDON) => #precompiledAccountsUB(BERLIN)
rule #precompiledAccountsUB(MERGE) => #precompiledAccountsUB(LONDON)
rule #precompiledAccountsUB(SHANGHAI) => #precompiledAccountsUB(MERGE)
rule #precompiledAccountsUB(CANCUN) => 10
rule #precompiledAccountsUB(PRAGUE) => 17
rule #precompiledAccountsUB(OSAKA) => #precompiledAccountsUB(PRAGUE)


syntax Set ::= #precompiledAccountsSet ( Schedule ) [symbol(#precompiledAccountsSet), function, total]
syntax Set ::= #precompiledAccountsSetAux ( Int ) [symbol(#precompiledAccountsSetAux), function, total]
// ------------------------------------------------------------------------------------------------------------
rule #precompiledAccountsSet(SCHED) => #precompiledAccountsSetAux(#precompiledAccountsUB(SCHED))

rule #precompiledAccountsSetAux(N) => .Set requires N <=Int 0
rule #precompiledAccountsSetAux(N) => SetItem(N) #precompiledAccountsSetAux(N -Int 1) [owise, preserves-definedness]
syntax Set ::= #precompiledAccountsSet ( Schedule ) [symbol(#precompiledAccountsSet), function, total]
// ------------------------------------------------------------------------------------------------------
rule #precompiledAccountsSet(DEFAULT) => SetItem(1) SetItem(2) SetItem(3) SetItem(4)
rule #precompiledAccountsSet(FRONTIER) => #precompiledAccountsSet(DEFAULT)
rule #precompiledAccountsSet(HOMESTEAD) => #precompiledAccountsSet(FRONTIER)
rule #precompiledAccountsSet(TANGERINE_WHISTLE) => #precompiledAccountsSet(HOMESTEAD)
rule #precompiledAccountsSet(SPURIOUS_DRAGON) => #precompiledAccountsSet(TANGERINE_WHISTLE)
rule #precompiledAccountsSet(BYZANTIUM) => #precompiledAccountsSet(SPURIOUS_DRAGON)
SetItem(5) SetItem(6) SetItem(7) SetItem(8)
rule #precompiledAccountsSet(CONSTANTINOPLE) => #precompiledAccountsSet(BYZANTIUM)
rule #precompiledAccountsSet(PETERSBURG) => #precompiledAccountsSet(CONSTANTINOPLE)
rule #precompiledAccountsSet(ISTANBUL) => #precompiledAccountsSet(PETERSBURG) SetItem(9)
rule #precompiledAccountsSet(BERLIN) => #precompiledAccountsSet(ISTANBUL)
rule #precompiledAccountsSet(LONDON) => #precompiledAccountsSet(BERLIN)
rule #precompiledAccountsSet(MERGE) => #precompiledAccountsSet(LONDON)
rule #precompiledAccountsSet(SHANGHAI) => #precompiledAccountsSet(MERGE)
rule #precompiledAccountsSet(CANCUN) => #precompiledAccountsSet(SHANGHAI) SetItem(10)
rule #precompiledAccountsSet(PRAGUE) => #precompiledAccountsSet(CANCUN)
SetItem(11) SetItem(12) SetItem(13) SetItem(14)
SetItem(15) SetItem(16) SetItem(17)
rule #precompiledAccountsSet(OSAKA) => #precompiledAccountsSet(PRAGUE)
```

- `ECREC` performs ECDSA public key recovery.
Expand Down