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core/vm: implement eip 7883 (modexp repricing)

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Jared Wasinger 2025-04-10 22:15:26 +08:00 committed by MariusVanDerWijden
parent 5e98c97abb
commit beef56ed02
2 changed files with 20 additions and 10 deletions
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28
core/vm/contracts.go
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@ -66,7 +66,7 @@ var PrecompiledContractsByzantium = PrecompiledContracts{
common.BytesToAddress([]byte{0x2}): &sha256hash{},
common.BytesToAddress([]byte{0x3}): &ripemd160hash{},
common.BytesToAddress([]byte{0x4}): &dataCopy{},
common.BytesToAddress([]byte{0x5}): &bigModExp{eip2565: false, eip7823: false},
common.BytesToAddress([]byte{0x5}): &bigModExp{eip2565: false, eip7823: false, eip7883: false},
common.BytesToAddress([]byte{0x6}): &bn256AddByzantium{},
common.BytesToAddress([]byte{0x7}): &bn256ScalarMulByzantium{},
common.BytesToAddress([]byte{0x8}): &bn256PairingByzantium{},
@ -79,7 +79,7 @@ var PrecompiledContractsIstanbul = PrecompiledContracts{
common.BytesToAddress([]byte{0x2}): &sha256hash{},
common.BytesToAddress([]byte{0x3}): &ripemd160hash{},
common.BytesToAddress([]byte{0x4}): &dataCopy{},
common.BytesToAddress([]byte{0x5}): &bigModExp{eip2565: false, eip7823: false},
common.BytesToAddress([]byte{0x5}): &bigModExp{eip2565: false, eip7823: false, eip7883: false},
common.BytesToAddress([]byte{0x6}): &bn256AddIstanbul{},
common.BytesToAddress([]byte{0x7}): &bn256ScalarMulIstanbul{},
common.BytesToAddress([]byte{0x8}): &bn256PairingIstanbul{},
@ -93,7 +93,7 @@ var PrecompiledContractsBerlin = PrecompiledContracts{
common.BytesToAddress([]byte{0x2}): &sha256hash{},
common.BytesToAddress([]byte{0x3}): &ripemd160hash{},
common.BytesToAddress([]byte{0x4}): &dataCopy{},
common.BytesToAddress([]byte{0x5}): &bigModExp{eip2565: true, eip7823: false},
common.BytesToAddress([]byte{0x5}): &bigModExp{eip2565: true, eip7823: false, eip7883: false},
common.BytesToAddress([]byte{0x6}): &bn256AddIstanbul{},
common.BytesToAddress([]byte{0x7}): &bn256ScalarMulIstanbul{},
common.BytesToAddress([]byte{0x8}): &bn256PairingIstanbul{},
@ -107,7 +107,7 @@ var PrecompiledContractsCancun = PrecompiledContracts{
common.BytesToAddress([]byte{0x2}): &sha256hash{},
common.BytesToAddress([]byte{0x3}): &ripemd160hash{},
common.BytesToAddress([]byte{0x4}): &dataCopy{},
common.BytesToAddress([]byte{0x5}): &bigModExp{eip2565: true, eip7823: false},
common.BytesToAddress([]byte{0x5}): &bigModExp{eip2565: true, eip7823: false, eip7883: false},
common.BytesToAddress([]byte{0x6}): &bn256AddIstanbul{},
common.BytesToAddress([]byte{0x7}): &bn256ScalarMulIstanbul{},
common.BytesToAddress([]byte{0x8}): &bn256PairingIstanbul{},
@ -122,7 +122,7 @@ var PrecompiledContractsPrague = PrecompiledContracts{
common.BytesToAddress([]byte{0x02}): &sha256hash{},
common.BytesToAddress([]byte{0x03}): &ripemd160hash{},
common.BytesToAddress([]byte{0x04}): &dataCopy{},
common.BytesToAddress([]byte{0x05}): &bigModExp{eip2565: true, eip7823: false},
common.BytesToAddress([]byte{0x05}): &bigModExp{eip2565: true, eip7823: false, eip7883: false},
common.BytesToAddress([]byte{0x06}): &bn256AddIstanbul{},
common.BytesToAddress([]byte{0x07}): &bn256ScalarMulIstanbul{},
common.BytesToAddress([]byte{0x08}): &bn256PairingIstanbul{},
@ -148,7 +148,7 @@ var PrecompiledContractsOsaka = PrecompiledContracts{
common.BytesToAddress([]byte{0x02}): &sha256hash{},
common.BytesToAddress([]byte{0x03}): &ripemd160hash{},
common.BytesToAddress([]byte{0x04}): &dataCopy{},
common.BytesToAddress([]byte{0x05}): &bigModExp{eip2565: true, eip7823: true},
common.BytesToAddress([]byte{0x05}): &bigModExp{eip2565: true, eip7823: true, eip7883: true},
common.BytesToAddress([]byte{0x06}): &bn256AddIstanbul{},
common.BytesToAddress([]byte{0x07}): &bn256ScalarMulIstanbul{},
common.BytesToAddress([]byte{0x08}): &bn256PairingIstanbul{},
@ -342,6 +342,7 @@ func (c *dataCopy) Run(in []byte) ([]byte, error) {
type bigModExp struct {
eip2565 bool
eip7823 bool
eip7883 bool
}
var (
@ -427,6 +428,7 @@ func (c *bigModExp) RequiredGas(input []byte) uint64 {
} else {
gas.Set(modLen)
}
maxLen := new(big.Int).Set(gas)
if c.eip2565 {
// EIP-2565 has three changes
// 1. Different multComplexity (inlined here)
@ -440,6 +442,14 @@ func (c *bigModExp) RequiredGas(input []byte) uint64 {
gas.Rsh(gas, 3)
gas.Mul(gas, gas)
var minPrice uint64 = 200
if c.eip7883 {
minPrice = 500
if maxLen.Cmp(big32) > 0 {
gas.Mul(gas, big.NewInt(2))
}
}
if adjExpLen.Cmp(big1) > 0 {
gas.Mul(gas, adjExpLen)
}
@ -448,9 +458,9 @@ func (c *bigModExp) RequiredGas(input []byte) uint64 {
if gas.BitLen() > 64 {
return math.MaxUint64
}
// 3. Minimum price of 200 gas
if gas.Uint64() < 200 {
return 200
if gas.Uint64() < minPrice {
return minPrice
}
return gas.Uint64()
}

2
tests/testdata

@ -1 +1 @@
Subproject commit 81862e4848585a438d64f911a19b3825f0f4cd95
Subproject commit faf33b471465d3c6cdc3d04fbd690895f78d33f2