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core/vm: 64 bit memory and gas calculations (#19210)

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* core/vm: remove function call for stack validation from evm runloop

* core/vm: separate gas  calc into static + dynamic

* core/vm: optimize push1

* core/vm: reuse pooled bigints for ADDRESS, ORIGIN and CALLER

* core/vm: use generic error message for jump/jumpi, to avoid string interpolation

* testdata: fix tests for new error message

* core/vm: use 64-bit memory calculations

* core/vm: fix error in memory calculation

* core/vm: address review concerns

* core/vm: avoid unnecessary use of big.Int:BitLen()
This commit is contained in:
Martin Holst Swende
2019-03-12 10:40:05 +01:00
committed by Péter Szilágyi
parent da5de012c3
commit 7504dbd6eb
13 changed files with 915 additions and 745 deletions
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37
core/vm/instructions.go
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@ -18,7 +18,6 @@ package vm
import (
"errors"
"fmt"
"math/big"
"github.com/ethereum/go-ethereum/common"
@ -35,6 +34,7 @@ var (
errReturnDataOutOfBounds = errors.New("evm: return data out of bounds")
errExecutionReverted = errors.New("evm: execution reverted")
errMaxCodeSizeExceeded = errors.New("evm: max code size exceeded")
errInvalidJump = errors.New("evm: invalid jump destination")
)
func opAdd(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
@ -405,7 +405,7 @@ func opSha3(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory
}
func opAddress(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(contract.Address().Big())
stack.push(interpreter.intPool.get().SetBytes(contract.Address().Bytes()))
return nil, nil
}
@ -416,12 +416,12 @@ func opBalance(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memo
}
func opOrigin(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(interpreter.evm.Origin.Big())
stack.push(interpreter.intPool.get().SetBytes(interpreter.evm.Origin.Bytes()))
return nil, nil
}
func opCaller(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(contract.Caller().Big())
stack.push(interpreter.intPool.get().SetBytes(contract.Caller().Bytes()))
return nil, nil
}
@ -467,7 +467,7 @@ func opReturnDataCopy(pc *uint64, interpreter *EVMInterpreter, contract *Contrac
)
defer interpreter.intPool.put(memOffset, dataOffset, length, end)
if end.BitLen() > 64 || uint64(len(interpreter.returnData)) < end.Uint64() {
if !end.IsUint64() || uint64(len(interpreter.returnData)) < end.Uint64() {
return nil, errReturnDataOutOfBounds
}
memory.Set(memOffset.Uint64(), length.Uint64(), interpreter.returnData[dataOffset.Uint64():end.Uint64()])
@ -572,7 +572,7 @@ func opBlockhash(pc *uint64, interpreter *EVMInterpreter, contract *Contract, me
}
func opCoinbase(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
stack.push(interpreter.evm.Coinbase.Big())
stack.push(interpreter.intPool.get().SetBytes(interpreter.evm.Coinbase.Bytes()))
return nil, nil
}
@ -645,8 +645,7 @@ func opSstore(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memor
func opJump(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
pos := stack.pop()
if !contract.validJumpdest(pos) {
nop := contract.GetOp(pos.Uint64())
return nil, fmt.Errorf("invalid jump destination (%v) %v", nop, pos)
return nil, errInvalidJump
}
*pc = pos.Uint64()
@ -658,8 +657,7 @@ func opJumpi(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory
pos, cond := stack.pop(), stack.pop()
if cond.Sign() != 0 {
if !contract.validJumpdest(pos) {
nop := contract.GetOp(pos.Uint64())
return nil, fmt.Errorf("invalid jump destination (%v) %v", nop, pos)
return nil, errInvalidJump
}
*pc = pos.Uint64()
} else {
@ -711,7 +709,7 @@ func opCreate(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memor
} else if suberr != nil && suberr != ErrCodeStoreOutOfGas {
stack.push(interpreter.intPool.getZero())
} else {
stack.push(addr.Big())
stack.push(interpreter.intPool.get().SetBytes(addr.Bytes()))
}
contract.Gas += returnGas
interpreter.intPool.put(value, offset, size)
@ -739,7 +737,7 @@ func opCreate2(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memo
if suberr != nil {
stack.push(interpreter.intPool.getZero())
} else {
stack.push(addr.Big())
stack.push(interpreter.intPool.get().SetBytes(addr.Bytes()))
}
contract.Gas += returnGas
interpreter.intPool.put(endowment, offset, size, salt)
@ -912,6 +910,21 @@ func makeLog(size int) executionFunc {
}
}
// opPush1 is a specialized version of pushN
func opPush1(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
var (
codeLen = uint64(len(contract.Code))
integer = interpreter.intPool.get()
)
*pc += 1
if *pc < codeLen {
stack.push(integer.SetUint64(uint64(contract.Code[*pc])))
} else {
stack.push(integer.SetUint64(0))
}
return nil, nil
}
// make push instruction function
func makePush(size uint64, pushByteSize int) executionFunc {
return func(pc *uint64, interpreter *EVMInterpreter, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {