7731061903
This significantly reduces the dependency closure of ethclient, which no longer depends on core/vm as of this change. All uses of vm.Logs are replaced by []*types.Log. NewLog is gone too, the constructor simply returned a literal.
648 lines
19 KiB
Go
648 lines
19 KiB
Go
// Copyright 2015 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package vm
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import (
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"fmt"
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"math/big"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/math"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/params"
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)
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func opAdd(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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x, y := stack.pop(), stack.pop()
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stack.push(U256(x.Add(x, y)))
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return nil, nil
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}
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func opSub(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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x, y := stack.pop(), stack.pop()
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stack.push(U256(x.Sub(x, y)))
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return nil, nil
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}
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func opMul(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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x, y := stack.pop(), stack.pop()
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stack.push(U256(x.Mul(x, y)))
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return nil, nil
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}
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func opDiv(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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x, y := stack.pop(), stack.pop()
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if y.Cmp(common.Big0) != 0 {
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stack.push(U256(x.Div(x, y)))
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} else {
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stack.push(new(big.Int))
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}
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return nil, nil
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}
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func opSdiv(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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x, y := S256(stack.pop()), S256(stack.pop())
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if y.Cmp(common.Big0) == 0 {
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stack.push(new(big.Int))
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return nil, nil
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} else {
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n := new(big.Int)
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if new(big.Int).Mul(x, y).Cmp(common.Big0) < 0 {
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n.SetInt64(-1)
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} else {
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n.SetInt64(1)
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}
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res := x.Div(x.Abs(x), y.Abs(y))
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res.Mul(res, n)
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stack.push(U256(res))
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}
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return nil, nil
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}
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func opMod(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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x, y := stack.pop(), stack.pop()
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if y.Cmp(common.Big0) == 0 {
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stack.push(new(big.Int))
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} else {
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stack.push(U256(x.Mod(x, y)))
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}
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return nil, nil
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}
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func opSmod(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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x, y := S256(stack.pop()), S256(stack.pop())
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if y.Cmp(common.Big0) == 0 {
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stack.push(new(big.Int))
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} else {
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n := new(big.Int)
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if x.Cmp(common.Big0) < 0 {
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n.SetInt64(-1)
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} else {
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n.SetInt64(1)
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}
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res := x.Mod(x.Abs(x), y.Abs(y))
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res.Mul(res, n)
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stack.push(U256(res))
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}
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return nil, nil
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}
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func opExp(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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base, exponent := stack.pop(), stack.pop()
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stack.push(math.Exp(base, exponent))
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return nil, nil
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}
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func opSignExtend(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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back := stack.pop()
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if back.Cmp(big.NewInt(31)) < 0 {
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bit := uint(back.Uint64()*8 + 7)
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num := stack.pop()
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mask := back.Lsh(common.Big1, bit)
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mask.Sub(mask, common.Big1)
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if common.BitTest(num, int(bit)) {
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num.Or(num, mask.Not(mask))
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} else {
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num.And(num, mask)
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}
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stack.push(U256(num))
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}
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return nil, nil
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}
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func opNot(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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x := stack.pop()
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stack.push(U256(x.Not(x)))
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return nil, nil
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}
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func opLt(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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x, y := stack.pop(), stack.pop()
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if x.Cmp(y) < 0 {
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stack.push(big.NewInt(1))
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} else {
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stack.push(new(big.Int))
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}
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return nil, nil
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}
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func opGt(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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x, y := stack.pop(), stack.pop()
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if x.Cmp(y) > 0 {
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stack.push(big.NewInt(1))
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} else {
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stack.push(new(big.Int))
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}
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return nil, nil
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}
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func opSlt(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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x, y := S256(stack.pop()), S256(stack.pop())
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if x.Cmp(S256(y)) < 0 {
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stack.push(big.NewInt(1))
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} else {
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stack.push(new(big.Int))
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}
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return nil, nil
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}
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func opSgt(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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x, y := S256(stack.pop()), S256(stack.pop())
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if x.Cmp(y) > 0 {
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stack.push(big.NewInt(1))
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} else {
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stack.push(new(big.Int))
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}
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return nil, nil
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}
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func opEq(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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x, y := stack.pop(), stack.pop()
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if x.Cmp(y) == 0 {
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stack.push(big.NewInt(1))
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} else {
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stack.push(new(big.Int))
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}
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return nil, nil
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}
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func opIszero(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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x := stack.pop()
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if x.Cmp(common.Big0) > 0 {
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stack.push(new(big.Int))
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} else {
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stack.push(big.NewInt(1))
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}
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return nil, nil
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}
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func opAnd(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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x, y := stack.pop(), stack.pop()
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stack.push(x.And(x, y))
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return nil, nil
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}
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func opOr(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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x, y := stack.pop(), stack.pop()
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stack.push(x.Or(x, y))
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return nil, nil
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}
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func opXor(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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x, y := stack.pop(), stack.pop()
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stack.push(x.Xor(x, y))
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return nil, nil
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}
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func opByte(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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th, val := stack.pop(), stack.pop()
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if th.Cmp(big.NewInt(32)) < 0 {
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byte := big.NewInt(int64(common.LeftPadBytes(val.Bytes(), 32)[th.Int64()]))
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stack.push(byte)
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} else {
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stack.push(new(big.Int))
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}
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return nil, nil
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}
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func opAddmod(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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x, y, z := stack.pop(), stack.pop(), stack.pop()
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if z.Cmp(Zero) > 0 {
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add := x.Add(x, y)
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add.Mod(add, z)
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stack.push(U256(add))
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} else {
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stack.push(new(big.Int))
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}
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return nil, nil
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}
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func opMulmod(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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x, y, z := stack.pop(), stack.pop(), stack.pop()
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if z.Cmp(Zero) > 0 {
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mul := x.Mul(x, y)
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mul.Mod(mul, z)
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stack.push(U256(mul))
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} else {
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stack.push(new(big.Int))
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}
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return nil, nil
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}
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func opSha3(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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offset, size := stack.pop(), stack.pop()
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hash := crypto.Keccak256(memory.Get(offset.Int64(), size.Int64()))
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stack.push(common.BytesToBig(hash))
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return nil, nil
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}
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func opAddress(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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stack.push(common.Bytes2Big(contract.Address().Bytes()))
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return nil, nil
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}
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func opBalance(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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addr := common.BigToAddress(stack.pop())
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balance := env.StateDB.GetBalance(addr)
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stack.push(new(big.Int).Set(balance))
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return nil, nil
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}
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func opOrigin(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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stack.push(env.Origin.Big())
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return nil, nil
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}
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func opCaller(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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stack.push(contract.Caller().Big())
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return nil, nil
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}
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func opCallValue(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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stack.push(new(big.Int).Set(contract.value))
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return nil, nil
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}
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func opCalldataLoad(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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stack.push(common.Bytes2Big(getData(contract.Input, stack.pop(), common.Big32)))
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return nil, nil
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}
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func opCalldataSize(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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stack.push(big.NewInt(int64(len(contract.Input))))
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return nil, nil
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}
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func opCalldataCopy(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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var (
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mOff = stack.pop()
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cOff = stack.pop()
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l = stack.pop()
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)
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memory.Set(mOff.Uint64(), l.Uint64(), getData(contract.Input, cOff, l))
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return nil, nil
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}
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func opExtCodeSize(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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addr := common.BigToAddress(stack.pop())
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l := big.NewInt(int64(env.StateDB.GetCodeSize(addr)))
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stack.push(l)
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return nil, nil
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}
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func opCodeSize(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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l := big.NewInt(int64(len(contract.Code)))
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stack.push(l)
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return nil, nil
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}
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func opCodeCopy(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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var (
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mOff = stack.pop()
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cOff = stack.pop()
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l = stack.pop()
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)
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codeCopy := getData(contract.Code, cOff, l)
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memory.Set(mOff.Uint64(), l.Uint64(), codeCopy)
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return nil, nil
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}
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func opExtCodeCopy(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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var (
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addr = common.BigToAddress(stack.pop())
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mOff = stack.pop()
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cOff = stack.pop()
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l = stack.pop()
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)
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codeCopy := getData(env.StateDB.GetCode(addr), cOff, l)
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memory.Set(mOff.Uint64(), l.Uint64(), codeCopy)
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return nil, nil
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}
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func opGasprice(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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stack.push(new(big.Int).Set(env.GasPrice))
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return nil, nil
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}
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func opBlockhash(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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num := stack.pop()
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n := new(big.Int).Sub(env.BlockNumber, common.Big257)
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if num.Cmp(n) > 0 && num.Cmp(env.BlockNumber) < 0 {
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stack.push(env.GetHash(num.Uint64()).Big())
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} else {
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stack.push(new(big.Int))
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}
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return nil, nil
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}
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func opCoinbase(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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stack.push(env.Coinbase.Big())
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return nil, nil
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}
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func opTimestamp(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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stack.push(U256(new(big.Int).Set(env.Time)))
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return nil, nil
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}
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func opNumber(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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stack.push(U256(new(big.Int).Set(env.BlockNumber)))
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return nil, nil
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}
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func opDifficulty(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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stack.push(U256(new(big.Int).Set(env.Difficulty)))
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return nil, nil
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}
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func opGasLimit(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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stack.push(U256(new(big.Int).Set(env.GasLimit)))
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return nil, nil
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}
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func opPop(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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stack.pop()
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return nil, nil
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}
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func opMload(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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offset := stack.pop()
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val := common.BigD(memory.Get(offset.Int64(), 32))
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stack.push(val)
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return nil, nil
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}
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func opMstore(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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// pop value of the stack
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mStart, val := stack.pop(), stack.pop()
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memory.Set(mStart.Uint64(), 32, common.BigToBytes(val, 256))
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return nil, nil
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}
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func opMstore8(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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off, val := stack.pop().Int64(), stack.pop().Int64()
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memory.store[off] = byte(val & 0xff)
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return nil, nil
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}
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func opSload(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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loc := common.BigToHash(stack.pop())
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val := env.StateDB.GetState(contract.Address(), loc).Big()
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stack.push(val)
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return nil, nil
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}
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func opSstore(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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loc := common.BigToHash(stack.pop())
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val := stack.pop()
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env.StateDB.SetState(contract.Address(), loc, common.BigToHash(val))
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return nil, nil
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}
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func opJump(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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pos := stack.pop()
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if !contract.jumpdests.has(contract.CodeHash, contract.Code, pos) {
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nop := contract.GetOp(pos.Uint64())
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return nil, fmt.Errorf("invalid jump destination (%v) %v", nop, pos)
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}
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*pc = pos.Uint64()
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return nil, nil
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}
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func opJumpi(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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pos, cond := stack.pop(), stack.pop()
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if cond.Cmp(common.BigTrue) >= 0 {
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if !contract.jumpdests.has(contract.CodeHash, contract.Code, pos) {
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nop := contract.GetOp(pos.Uint64())
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return nil, fmt.Errorf("invalid jump destination (%v) %v", nop, pos)
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}
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*pc = pos.Uint64()
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} else {
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*pc++
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}
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return nil, nil
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}
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func opJumpdest(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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return nil, nil
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}
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func opPc(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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stack.push(new(big.Int).SetUint64(*pc))
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return nil, nil
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}
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func opMsize(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
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stack.push(big.NewInt(int64(memory.Len())))
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return nil, nil
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}
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func opGas(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
|
|
stack.push(new(big.Int).Set(contract.Gas))
|
|
return nil, nil
|
|
}
|
|
|
|
func opCreate(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
|
|
var (
|
|
value = stack.pop()
|
|
offset, size = stack.pop(), stack.pop()
|
|
input = memory.Get(offset.Int64(), size.Int64())
|
|
gas = new(big.Int).Set(contract.Gas)
|
|
)
|
|
if env.ChainConfig().IsEIP150(env.BlockNumber) {
|
|
gas.Div(gas, n64)
|
|
gas = gas.Sub(contract.Gas, gas)
|
|
}
|
|
|
|
contract.UseGas(gas)
|
|
_, addr, suberr := env.Create(contract, input, gas, value)
|
|
// Push item on the stack based on the returned error. If the ruleset is
|
|
// homestead we must check for CodeStoreOutOfGasError (homestead only
|
|
// rule) and treat as an error, if the ruleset is frontier we must
|
|
// ignore this error and pretend the operation was successful.
|
|
if env.ChainConfig().IsHomestead(env.BlockNumber) && suberr == ErrCodeStoreOutOfGas {
|
|
stack.push(new(big.Int))
|
|
} else if suberr != nil && suberr != ErrCodeStoreOutOfGas {
|
|
stack.push(new(big.Int))
|
|
} else {
|
|
stack.push(addr.Big())
|
|
}
|
|
return nil, nil
|
|
}
|
|
|
|
func opCall(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
|
|
gas := stack.pop()
|
|
// pop gas and value of the stack.
|
|
addr, value := stack.pop(), stack.pop()
|
|
value = U256(value)
|
|
// pop input size and offset
|
|
inOffset, inSize := stack.pop(), stack.pop()
|
|
// pop return size and offset
|
|
retOffset, retSize := stack.pop(), stack.pop()
|
|
|
|
address := common.BigToAddress(addr)
|
|
|
|
// Get the arguments from the memory
|
|
args := memory.Get(inOffset.Int64(), inSize.Int64())
|
|
|
|
if len(value.Bytes()) > 0 {
|
|
gas.Add(gas, params.CallStipend)
|
|
}
|
|
|
|
ret, err := env.Call(contract, address, args, gas, value)
|
|
|
|
if err != nil {
|
|
stack.push(new(big.Int))
|
|
|
|
} else {
|
|
stack.push(big.NewInt(1))
|
|
|
|
memory.Set(retOffset.Uint64(), retSize.Uint64(), ret)
|
|
}
|
|
return nil, nil
|
|
}
|
|
|
|
func opCallCode(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
|
|
gas := stack.pop()
|
|
// pop gas and value of the stack.
|
|
addr, value := stack.pop(), stack.pop()
|
|
value = U256(value)
|
|
// pop input size and offset
|
|
inOffset, inSize := stack.pop(), stack.pop()
|
|
// pop return size and offset
|
|
retOffset, retSize := stack.pop(), stack.pop()
|
|
|
|
address := common.BigToAddress(addr)
|
|
|
|
// Get the arguments from the memory
|
|
args := memory.Get(inOffset.Int64(), inSize.Int64())
|
|
|
|
if len(value.Bytes()) > 0 {
|
|
gas.Add(gas, params.CallStipend)
|
|
}
|
|
|
|
ret, err := env.CallCode(contract, address, args, gas, value)
|
|
|
|
if err != nil {
|
|
stack.push(new(big.Int))
|
|
|
|
} else {
|
|
stack.push(big.NewInt(1))
|
|
|
|
memory.Set(retOffset.Uint64(), retSize.Uint64(), ret)
|
|
}
|
|
return nil, nil
|
|
}
|
|
|
|
func opDelegateCall(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
|
|
// if not homestead return an error. DELEGATECALL is not supported
|
|
// during pre-homestead.
|
|
if !env.ChainConfig().IsHomestead(env.BlockNumber) {
|
|
return nil, fmt.Errorf("invalid opcode %x", DELEGATECALL)
|
|
}
|
|
|
|
gas, to, inOffset, inSize, outOffset, outSize := stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop()
|
|
|
|
toAddr := common.BigToAddress(to)
|
|
args := memory.Get(inOffset.Int64(), inSize.Int64())
|
|
ret, err := env.DelegateCall(contract, toAddr, args, gas)
|
|
if err != nil {
|
|
stack.push(new(big.Int))
|
|
} else {
|
|
stack.push(big.NewInt(1))
|
|
memory.Set(outOffset.Uint64(), outSize.Uint64(), ret)
|
|
}
|
|
return nil, nil
|
|
}
|
|
|
|
func opReturn(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
|
|
offset, size := stack.pop(), stack.pop()
|
|
ret := memory.GetPtr(offset.Int64(), size.Int64())
|
|
|
|
return ret, nil
|
|
}
|
|
|
|
func opStop(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
|
|
return nil, nil
|
|
}
|
|
|
|
func opSuicide(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
|
|
balance := env.StateDB.GetBalance(contract.Address())
|
|
env.StateDB.AddBalance(common.BigToAddress(stack.pop()), balance)
|
|
|
|
env.StateDB.Suicide(contract.Address())
|
|
|
|
return nil, nil
|
|
}
|
|
|
|
// following functions are used by the instruction jump table
|
|
|
|
// make log instruction function
|
|
func makeLog(size int) executionFunc {
|
|
return func(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
|
|
topics := make([]common.Hash, size)
|
|
mStart, mSize := stack.pop(), stack.pop()
|
|
for i := 0; i < size; i++ {
|
|
topics[i] = common.BigToHash(stack.pop())
|
|
}
|
|
|
|
d := memory.Get(mStart.Int64(), mSize.Int64())
|
|
env.StateDB.AddLog(&types.Log{
|
|
Address: contract.Address(),
|
|
Topics: topics,
|
|
Data: d,
|
|
// This is a non-consensus field, but assigned here because
|
|
// core/state doesn't know the current block number.
|
|
BlockNumber: env.BlockNumber.Uint64(),
|
|
})
|
|
return nil, nil
|
|
}
|
|
}
|
|
|
|
// make push instruction function
|
|
func makePush(size uint64, bsize *big.Int) executionFunc {
|
|
return func(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
|
|
byts := getData(contract.Code, new(big.Int).SetUint64(*pc+1), bsize)
|
|
stack.push(common.Bytes2Big(byts))
|
|
*pc += size
|
|
return nil, nil
|
|
}
|
|
}
|
|
|
|
// make push instruction function
|
|
func makeDup(size int64) executionFunc {
|
|
return func(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
|
|
stack.dup(int(size))
|
|
return nil, nil
|
|
}
|
|
}
|
|
|
|
// make swap instruction function
|
|
func makeSwap(size int64) executionFunc {
|
|
// switch n + 1 otherwise n would be swapped with n
|
|
size += 1
|
|
return func(pc *uint64, env *EVM, contract *Contract, memory *Memory, stack *Stack) ([]byte, error) {
|
|
stack.swap(int(size))
|
|
return nil, nil
|
|
}
|
|
}
|