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Geth-Modification
Unverified Commit 6131dd55 authored by Péter Szilágyi's avatar Péter Szilágyi
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core/vm: polish precompile contract code, add tests and benches 

 * Update modexp gas calculation to new version
 * Fix modexp modulo 0 special case to return zero
parent 7bbdf3e2
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Showing with 371 additions and 204 deletions
core/vm/contracts.go
View file @ 6131dd55
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core/vm/contracts_test.go
View file @ 6131dd55
package vm
import (
"bytes"
"math"
"testing"
"github.com/ethereum/go-ethereum/common"
)
const input = ""
// Tests the sample inputs from the ModExp EIP 198.
func TestPrecompiledModExp(t *testing.T) {
bigModExp := &bigModExp{}
func TestPairing(t *testing.T) {
pairing := &pairing{}
for i, tt := range []struct {
input string
gas uint64
output string
}{
{"00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000002003fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2efffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2f", 2611, "0000000000000000000000000000000000000000000000000000000000000001"},
{"000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000020fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2efffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2f", 2611, "0000000000000000000000000000000000000000000000000000000000000000"},
{"00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000020fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffd", math.MaxUint64, ""},
{"00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000002003ffff800000000000000000000000000000000000000000000000000000000000000007", 153, "3b01b01ac41f2d6e917c6d6a221ce793802469026d9ab7578fa2e79e4da6aaab"},
{"00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000002003ffff80", 153, "3b01b01ac41f2d6e917c6d6a221ce793802469026d9ab7578fa2e79e4da6aaab"},
} {
gas := bigModExp.RequiredGas(common.FromHex(tt.input))
if gas != tt.gas {
t.Errorf("test %d: required gas mismatch: have %v, want %v", i, gas, tt.gas)
continue
}
if gas == math.MaxUint64 {
continue // Out of gas
}
out, err := bigModExp.Run(common.FromHex(tt.input))
if err != nil {
t.Errorf("test %d: contract execution failed: %v", i, err)
continue
}
if !bytes.Equal(out, common.FromHex(tt.output)) {
t.Errorf("test %d: contract output mismatch: have %x, want %v", i, out, tt.output)
}
}
}
// Tests the sample inputs from the elliptic curve addition EIP 213.
func TestPrecompiledBn256Add(t *testing.T) {
bn256Add := &bn256Add{}
for i, tt := range []struct {
input string
failure error
output string
}{
{"0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000", nil, "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"},
{"", nil, "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"},
{"1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111", errNotOnCurve, ""},
} {
out, err := bn256Add.Run(common.FromHex(tt.input))
if err != tt.failure {
t.Errorf("test %d: contract execution failure mismatch: have %v, want %v", i, err, tt.failure)
continue
}
if !bytes.Equal(out, common.FromHex(tt.output)) {
t.Errorf("test %d: contract output mismatch: have %x, want %v", i, out, tt.output)
}
}
}
// Tests the sample inputs from the elliptic curve scalar multiplication EIP 213.
func TestPrecompiledBn256ScalarMul(t *testing.T) {
bn256ScalarMul := &bn256ScalarMul{}
for i, tt := range []struct {
input string
failure error
output string
}{
{"000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000", nil, "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"},
{"", nil, "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"},
{"111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111110f00000000000000000000000000000000000000000000000000000000000000", errNotOnCurve, ""},
} {
out, err := bn256ScalarMul.Run(common.FromHex(tt.input))
if err != tt.failure {
t.Errorf("test %d: contract execution failure mismatch: have %v, want %v", i, err, tt.failure)
continue
}
if !bytes.Equal(out, common.FromHex(tt.output)) {
t.Errorf("test %d: contract output mismatch: have %x, want %v", i, out, tt.output)
}
}
}
for i, test := range []struct {
// Tests the sample inputs from the elliptic curve pairing check EIP 197.
func TestPrecompiledBn256Pairing(t *testing.T) {
bn256Pairing := &bn256Pairing{}
for i, tt := range []struct {
input string
valid int
}{
......@@ -22,14 +105,12 @@ func TestPairing(t *testing.T) {
{"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", 1},
{"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", 0},
} {
r, err := pairing.Run(common.FromHex(test.input))
out, err := bn256Pairing.Run(common.FromHex(tt.input))
if err != nil {
t.Error(i, ":", err)
t.Errorf("test %d: contrac execution failed: %v", i, err)
}
if int(r[31]) != test.valid {
t.Error(i, "expected", test.valid, "but was", r[31])
if int(out[31]) != tt.valid {
t.Errorf("test %d: contract output mismatch: have %v, want %v", i, out[31], tt.valid)
}
}
}
core/vm/evm.go
View file @ 6131dd55
......@@ -36,16 +36,14 @@ type (
// run runs the given contract and takes care of running precompiles with a fallback to the byte code interpreter.
func run(evm *EVM, snapshot int, contract *Contract, input []byte) ([]byte, error) {
if contract.CodeAddr != nil {
precompiledContracts := PrecompiledContracts
precompiles := PrecompiledContractsHomestead
if evm.ChainConfig().IsMetropolis(evm.BlockNumber) {
precompiledContracts = PrecompiledContractsMetropolis
precompiles = PrecompiledContractsMetropolis
}
if p := precompiledContracts[*contract.CodeAddr]; p != nil {
if p := precompiles[*contract.CodeAddr]; p != nil {
return RunPrecompiledContract(p, input, contract)
}
}
return evm.interpreter.Run(snapshot, contract, input)
}
......@@ -147,10 +145,13 @@ func (evm *EVM) Call(caller ContractRef, addr common.Address, input []byte, gas
snapshot = evm.StateDB.Snapshot()
)
if !evm.StateDB.Exist(addr) {
if PrecompiledContracts[addr] == nil && evm.ChainConfig().IsEIP158(evm.BlockNumber) && value.Sign() == 0 {
precompiles := PrecompiledContractsHomestead
if evm.ChainConfig().IsMetropolis(evm.BlockNumber) {
precompiles = PrecompiledContractsMetropolis
}
if precompiles[addr] == nil && evm.ChainConfig().IsEIP158(evm.BlockNumber) && value.Sign() == 0 {
return nil, gas, nil
}
evm.StateDB.CreateAccount(addr)
}
evm.Transfer(evm.StateDB, caller.Address(), to.Address(), value)
......
core/vm/instructions_test.go
View file @ 6131dd55
......@@ -69,7 +69,7 @@ func precompiledBenchmark(addr, input, expected string, gas uint64, bench *testi
contract := NewContract(AccountRef(common.HexToAddress("1337")),
nil, new(big.Int), gas)
p := PrecompiledContracts[common.HexToAddress(addr)]
p := PrecompiledContractsMetropolis[common.HexToAddress(addr)]
in := common.Hex2Bytes(input)
var (
res []byte
......@@ -94,7 +94,7 @@ func precompiledBenchmark(addr, input, expected string, gas uint64, bench *testi
}
}
func BenchmarkPrecompiledEcdsa(bench *testing.B) {
func BenchmarkPrecompiledECDSA(bench *testing.B) {
var (
addr = "01"
inp = "38d18acb67d25c8bb9942764b62f18e17054f66a817bd4295423adf9ed98873e000000000000000000000000000000000000000000000000000000000000001b38d18acb67d25c8bb9942764b62f18e17054f66a817bd4295423adf9ed98873e789d1dd423d25f0772d2748d60f7e4b81bb14d086eba8e8e8efb6dcff8a4ae02"
......@@ -103,6 +103,7 @@ func BenchmarkPrecompiledEcdsa(bench *testing.B) {
)
precompiledBenchmark(addr, inp, exp, gas, bench)
}
func BenchmarkPrecompiledSha256(bench *testing.B) {
var (
addr = "02"
......@@ -112,6 +113,7 @@ func BenchmarkPrecompiledSha256(bench *testing.B) {
)
precompiledBenchmark(addr, inp, exp, gas, bench)
}
func BenchmarkPrecompiledRipeMD(bench *testing.B) {
var (
addr = "03"
......@@ -121,6 +123,7 @@ func BenchmarkPrecompiledRipeMD(bench *testing.B) {
)
precompiledBenchmark(addr, inp, exp, gas, bench)
}
func BenchmarkPrecompiledIdentity(bench *testing.B) {
var (
addr = "04"
......@@ -130,131 +133,171 @@ func BenchmarkPrecompiledIdentity(bench *testing.B) {
)
precompiledBenchmark(addr, inp, exp, gas, bench)
}
func BenchmarkPrecompiledModExp(bench *testing.B) {
var (
addr = "05"
inp = "00000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000002003fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2efffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2f"
exp = "0000000000000000000000000000000000000000000000000000000000000001"
gas = uint64(4000000)
)
precompiledBenchmark(addr, inp, exp, gas, bench)
}
func BenchmarkPrecompiledBn256Add(bench *testing.B) {
var (
addr = "06"
inp = "0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
exp = "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
gas = uint64(4000000)
)
precompiledBenchmark(addr, inp, exp, gas, bench)
}
func BenchmarkPrecompiledBn256ScalarMul(bench *testing.B) {
var (
addr = "07"
inp = "000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
exp = "00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
gas = uint64(4000000)
)
precompiledBenchmark(addr, inp, exp, gas, bench)
}
func BenchmarkPrecompiledBn256Pairing(bench *testing.B) {
var (
addr = "08"
inp = "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"
exp = "0000000000000000000000000000000000000000000000000000000000000001"
gas = uint64(4000000)
)
precompiledBenchmark(addr, inp, exp, gas, bench)
}
func BenchmarkOpAdd(b *testing.B) {
x := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
y := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
opBenchmark(b, opAdd, x, y)
}
func BenchmarkOpSub(b *testing.B) {
x := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
y := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
opBenchmark(b, opSub, x, y)
}
func BenchmarkOpMul(b *testing.B) {
x := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
y := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
opBenchmark(b, opMul, x, y)
}
func BenchmarkOpDiv(b *testing.B) {
x := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
y := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
opBenchmark(b, opDiv, x, y)
}
func BenchmarkOpSdiv(b *testing.B) {
x := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
y := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
opBenchmark(b, opSdiv, x, y)
}
func BenchmarkOpMod(b *testing.B) {
x := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
y := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
opBenchmark(b, opMod, x, y)
}
func BenchmarkOpSmod(b *testing.B) {
x := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
y := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
opBenchmark(b, opSmod, x, y)
}
func BenchmarkOpExp(b *testing.B) {
x := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
y := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
opBenchmark(b, opExp, x, y)
}
func BenchmarkOpSignExtend(b *testing.B) {
x := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
y := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
opBenchmark(b, opSignExtend, x, y)
}
func BenchmarkOpLt(b *testing.B) {
x := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
y := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
opBenchmark(b, opLt, x, y)
}
func BenchmarkOpGt(b *testing.B) {
x := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
y := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
opBenchmark(b, opGt, x, y)
}
func BenchmarkOpSlt(b *testing.B) {
x := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
y := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
opBenchmark(b, opSlt, x, y)
}
func BenchmarkOpSgt(b *testing.B) {
x := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
y := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
opBenchmark(b, opSgt, x, y)
}
func BenchmarkOpEq(b *testing.B) {
x := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
y := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
opBenchmark(b, opEq, x, y)
}
func BenchmarkOpAnd(b *testing.B) {
x := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
y := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
opBenchmark(b, opAnd, x, y)
}
func BenchmarkOpOr(b *testing.B) {
x := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
y := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
opBenchmark(b, opOr, x, y)
}
func BenchmarkOpXor(b *testing.B) {
x := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
y := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
opBenchmark(b, opXor, x, y)
}
func BenchmarkOpByte(b *testing.B) {
x := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
y := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
opBenchmark(b, opByte, x, y)
}
func BenchmarkOpAddmod(b *testing.B) {
......@@ -263,15 +306,14 @@ func BenchmarkOpAddmod(b *testing.B) {
z := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
opBenchmark(b, opAddmod, x, y, z)
}
func BenchmarkOpMulmod(b *testing.B) {
x := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
y := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
z := "ABCDEF090807060504030201ffffffffffffffffffffffffffffffffffffffff"
opBenchmark(b, opMulmod, x, y, z)
}
//func BenchmarkOpSha3(b *testing.B) {
......
params/protocol_params.go
View file @ 6131dd55
......@@ -31,23 +31,16 @@ const (
SstoreSetGas uint64 = 20000 // Once per SLOAD operation.
LogDataGas uint64 = 8 // Per byte in a LOG* operation's data.
CallStipend uint64 = 2300 // Free gas given at beginning of call.
EcrecoverGas uint64 = 3000 //
Sha256WordGas uint64 = 12 //
Sha3Gas uint64 = 30 // Once per SHA3 operation.
Sha256Gas uint64 = 60 //
IdentityWordGas uint64 = 3 //
Sha3WordGas uint64 = 6 // Once per word of the SHA3 operation's data.
SstoreResetGas uint64 = 5000 // Once per SSTORE operation if the zeroness changes from zero.
SstoreClearGas uint64 = 5000 // Once per SSTORE operation if the zeroness doesn't change.
SstoreRefundGas uint64 = 15000 // Once per SSTORE operation if the zeroness changes to zero.
JumpdestGas uint64 = 1 // Refunded gas, once per SSTORE operation if the zeroness changes to zero.
IdentityGas uint64 = 15 //
EpochDuration uint64 = 30000 // Duration between proof-of-work epochs.
CallGas uint64 = 40 // Once per CALL operation & message call transaction.
CreateDataGas uint64 = 200 //
Ripemd160Gas uint64 = 600 //
Ripemd160WordGas uint64 = 120 //
CallCreateDepth uint64 = 1024 // Maximum depth of call/create stack.
ExpGas uint64 = 10 // Once per EXP instruction
LogGas uint64 = 375 // Per LOG* operation.
......@@ -60,7 +53,22 @@ const (
MemoryGas uint64 = 3 // Times the address of the (highest referenced byte in memory + 1). NOTE: referencing happens on read, write and in instructions such as RETURN and CALL.
TxDataNonZeroGas uint64 = 68 // Per byte of data attached to a transaction that is not equal to zero. NOTE: Not payable on data of calls between transactions.
MaxCodeSize = 24576
MaxCodeSize = 24576 // Maximum bytecode to permit for a contract
// Precompiled contract gas prices
EcrecoverGas uint64 = 3000 // Elliptic curve sender recovery gas price
Sha256BaseGas uint64 = 60 // Base price for a SHA256 operation
Sha256PerWordGas uint64 = 12 // Per-word price for a SHA256 operation
Ripemd160BaseGas uint64 = 600 // Base price for a RIPEMD160 operation
Ripemd160PerWordGas uint64 = 120 // Per-word price for a RIPEMD160 operation
IdentityBaseGas uint64 = 15 // Base price for a data copy operation
IdentityPerWordGas uint64 = 3 // Per-work price for a data copy operation
ModExpQuadCoeffDiv uint64 = 100 // Divisor for the quadratic particle of the big int modular exponentiation
Bn256AddGas uint64 = 500 // Gas needed for an elliptic curve addition
Bn256ScalarMulGas uint64 = 2000 // Gas needed for an elliptic curve scalar multiplication
Bn256PairingBaseGas uint64 = 100000 // Base price for an elliptic curve pairing check
Bn256PairingPerPointGas uint64 = 80000 // Per-point price for an elliptic curve pairing check
)
var (
......
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