cd57d5cd38
* core/vm: implement EIP 2315, subroutines for the EVM * core/vm: eip 2315 - lintfix + check jump dest validity + check ret stack size constraints logger: markdown-friendly traces, validate jumpdest, more testcase, correct opcodes * core/vm: update subroutines acc to eip: disallow walk-into * core/vm/eips: gas cost changes for subroutines * core/vm: update opcodes for EIP-2315 * core/vm: define RETURNSUB as a 'jumping' operation + review concerns Co-authored-by: Martin Holst Swende <martin@swende.se>
993 lines
33 KiB
Go
993 lines
33 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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"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/params"
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"golang.org/x/crypto/sha3"
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)
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var (
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bigZero = new(big.Int)
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tt255 = math.BigPow(2, 255)
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)
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func opAdd(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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x, y := callContext.stack.pop(), callContext.stack.peek()
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math.U256(y.Add(x, y))
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interpreter.intPool.putOne(x)
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return nil, nil
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}
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func opSub(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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x, y := callContext.stack.pop(), callContext.stack.peek()
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math.U256(y.Sub(x, y))
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interpreter.intPool.putOne(x)
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return nil, nil
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}
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func opMul(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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x, y := callContext.stack.pop(), callContext.stack.pop()
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callContext.stack.push(math.U256(x.Mul(x, y)))
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interpreter.intPool.putOne(y)
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return nil, nil
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}
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func opDiv(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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x, y := callContext.stack.pop(), callContext.stack.peek()
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if y.Sign() != 0 {
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math.U256(y.Div(x, y))
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} else {
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y.SetUint64(0)
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}
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interpreter.intPool.putOne(x)
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return nil, nil
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}
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func opSdiv(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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x, y := math.S256(callContext.stack.pop()), math.S256(callContext.stack.pop())
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res := interpreter.intPool.getZero()
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if y.Sign() == 0 || x.Sign() == 0 {
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callContext.stack.push(res)
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} else {
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if x.Sign() != y.Sign() {
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res.Div(x.Abs(x), y.Abs(y))
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res.Neg(res)
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} else {
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res.Div(x.Abs(x), y.Abs(y))
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}
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callContext.stack.push(math.U256(res))
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}
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interpreter.intPool.put(x, y)
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return nil, nil
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}
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func opMod(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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x, y := callContext.stack.pop(), callContext.stack.pop()
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if y.Sign() == 0 {
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callContext.stack.push(x.SetUint64(0))
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} else {
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callContext.stack.push(math.U256(x.Mod(x, y)))
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}
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interpreter.intPool.putOne(y)
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return nil, nil
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}
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func opSmod(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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x, y := math.S256(callContext.stack.pop()), math.S256(callContext.stack.pop())
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res := interpreter.intPool.getZero()
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if y.Sign() == 0 {
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callContext.stack.push(res)
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} else {
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if x.Sign() < 0 {
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res.Mod(x.Abs(x), y.Abs(y))
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res.Neg(res)
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} else {
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res.Mod(x.Abs(x), y.Abs(y))
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}
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callContext.stack.push(math.U256(res))
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}
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interpreter.intPool.put(x, y)
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return nil, nil
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}
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func opExp(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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base, exponent := callContext.stack.pop(), callContext.stack.pop()
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// some shortcuts
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cmpToOne := exponent.Cmp(big1)
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if cmpToOne < 0 { // Exponent is zero
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// x ^ 0 == 1
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callContext.stack.push(base.SetUint64(1))
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} else if base.Sign() == 0 {
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// 0 ^ y, if y != 0, == 0
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callContext.stack.push(base.SetUint64(0))
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} else if cmpToOne == 0 { // Exponent is one
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// x ^ 1 == x
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callContext.stack.push(base)
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} else {
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callContext.stack.push(math.Exp(base, exponent))
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interpreter.intPool.putOne(base)
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}
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interpreter.intPool.putOne(exponent)
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return nil, nil
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}
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func opSignExtend(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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back := callContext.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 := callContext.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 num.Bit(int(bit)) > 0 {
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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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callContext.stack.push(math.U256(num))
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}
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interpreter.intPool.putOne(back)
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return nil, nil
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}
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func opNot(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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x := callContext.stack.peek()
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math.U256(x.Not(x))
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return nil, nil
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}
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func opLt(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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x, y := callContext.stack.pop(), callContext.stack.peek()
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if x.Cmp(y) < 0 {
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y.SetUint64(1)
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} else {
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y.SetUint64(0)
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}
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interpreter.intPool.putOne(x)
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return nil, nil
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}
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func opGt(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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x, y := callContext.stack.pop(), callContext.stack.peek()
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if x.Cmp(y) > 0 {
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y.SetUint64(1)
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} else {
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y.SetUint64(0)
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}
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interpreter.intPool.putOne(x)
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return nil, nil
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}
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func opSlt(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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x, y := callContext.stack.pop(), callContext.stack.peek()
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xSign := x.Cmp(tt255)
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ySign := y.Cmp(tt255)
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switch {
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case xSign >= 0 && ySign < 0:
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y.SetUint64(1)
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case xSign < 0 && ySign >= 0:
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y.SetUint64(0)
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default:
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if x.Cmp(y) < 0 {
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y.SetUint64(1)
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} else {
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y.SetUint64(0)
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}
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}
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interpreter.intPool.putOne(x)
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return nil, nil
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}
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func opSgt(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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x, y := callContext.stack.pop(), callContext.stack.peek()
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xSign := x.Cmp(tt255)
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ySign := y.Cmp(tt255)
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switch {
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case xSign >= 0 && ySign < 0:
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y.SetUint64(0)
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case xSign < 0 && ySign >= 0:
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y.SetUint64(1)
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default:
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if x.Cmp(y) > 0 {
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y.SetUint64(1)
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} else {
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y.SetUint64(0)
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}
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}
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interpreter.intPool.putOne(x)
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return nil, nil
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}
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func opEq(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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x, y := callContext.stack.pop(), callContext.stack.peek()
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if x.Cmp(y) == 0 {
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y.SetUint64(1)
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} else {
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y.SetUint64(0)
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}
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interpreter.intPool.putOne(x)
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return nil, nil
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}
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func opIszero(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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x := callContext.stack.peek()
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if x.Sign() > 0 {
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x.SetUint64(0)
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} else {
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x.SetUint64(1)
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}
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return nil, nil
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}
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func opAnd(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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x, y := callContext.stack.pop(), callContext.stack.pop()
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callContext.stack.push(x.And(x, y))
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interpreter.intPool.putOne(y)
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return nil, nil
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}
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func opOr(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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x, y := callContext.stack.pop(), callContext.stack.peek()
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y.Or(x, y)
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interpreter.intPool.putOne(x)
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return nil, nil
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}
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func opXor(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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x, y := callContext.stack.pop(), callContext.stack.peek()
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y.Xor(x, y)
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interpreter.intPool.putOne(x)
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return nil, nil
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}
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func opByte(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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th, val := callContext.stack.pop(), callContext.stack.peek()
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if th.Cmp(common.Big32) < 0 {
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b := math.Byte(val, 32, int(th.Int64()))
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val.SetUint64(uint64(b))
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} else {
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val.SetUint64(0)
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}
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interpreter.intPool.putOne(th)
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return nil, nil
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}
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func opAddmod(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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x, y, z := callContext.stack.pop(), callContext.stack.pop(), callContext.stack.pop()
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if z.Cmp(bigZero) > 0 {
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x.Add(x, y)
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x.Mod(x, z)
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callContext.stack.push(math.U256(x))
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} else {
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callContext.stack.push(x.SetUint64(0))
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}
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interpreter.intPool.put(y, z)
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return nil, nil
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}
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func opMulmod(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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x, y, z := callContext.stack.pop(), callContext.stack.pop(), callContext.stack.pop()
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if z.Cmp(bigZero) > 0 {
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x.Mul(x, y)
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x.Mod(x, z)
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callContext.stack.push(math.U256(x))
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} else {
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callContext.stack.push(x.SetUint64(0))
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}
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interpreter.intPool.put(y, z)
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return nil, nil
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}
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// opSHL implements Shift Left
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// The SHL instruction (shift left) pops 2 values from the stack, first arg1 and then arg2,
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// and pushes on the stack arg2 shifted to the left by arg1 number of bits.
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func opSHL(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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// Note, second operand is left in the stack; accumulate result into it, and no need to push it afterwards
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shift, value := math.U256(callContext.stack.pop()), math.U256(callContext.stack.peek())
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defer interpreter.intPool.putOne(shift) // First operand back into the pool
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if shift.Cmp(common.Big256) >= 0 {
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value.SetUint64(0)
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return nil, nil
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}
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n := uint(shift.Uint64())
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math.U256(value.Lsh(value, n))
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return nil, nil
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}
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// opSHR implements Logical Shift Right
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// The SHR instruction (logical shift right) pops 2 values from the stack, first arg1 and then arg2,
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// and pushes on the stack arg2 shifted to the right by arg1 number of bits with zero fill.
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func opSHR(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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// Note, second operand is left in the stack; accumulate result into it, and no need to push it afterwards
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shift, value := math.U256(callContext.stack.pop()), math.U256(callContext.stack.peek())
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defer interpreter.intPool.putOne(shift) // First operand back into the pool
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if shift.Cmp(common.Big256) >= 0 {
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value.SetUint64(0)
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return nil, nil
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}
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n := uint(shift.Uint64())
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math.U256(value.Rsh(value, n))
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return nil, nil
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}
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// opSAR implements Arithmetic Shift Right
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// The SAR instruction (arithmetic shift right) pops 2 values from the stack, first arg1 and then arg2,
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// and pushes on the stack arg2 shifted to the right by arg1 number of bits with sign extension.
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func opSAR(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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// Note, S256 returns (potentially) a new bigint, so we're popping, not peeking this one
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shift, value := math.U256(callContext.stack.pop()), math.S256(callContext.stack.pop())
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defer interpreter.intPool.putOne(shift) // First operand back into the pool
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if shift.Cmp(common.Big256) >= 0 {
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if value.Sign() >= 0 {
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value.SetUint64(0)
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} else {
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value.SetInt64(-1)
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}
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callContext.stack.push(math.U256(value))
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return nil, nil
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}
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n := uint(shift.Uint64())
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value.Rsh(value, n)
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callContext.stack.push(math.U256(value))
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return nil, nil
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}
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func opSha3(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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offset, size := callContext.stack.pop(), callContext.stack.pop()
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data := callContext.memory.GetPtr(offset.Int64(), size.Int64())
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if interpreter.hasher == nil {
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interpreter.hasher = sha3.NewLegacyKeccak256().(keccakState)
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} else {
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interpreter.hasher.Reset()
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}
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interpreter.hasher.Write(data)
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interpreter.hasher.Read(interpreter.hasherBuf[:])
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evm := interpreter.evm
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if evm.vmConfig.EnablePreimageRecording {
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evm.StateDB.AddPreimage(interpreter.hasherBuf, data)
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}
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callContext.stack.push(interpreter.intPool.get().SetBytes(interpreter.hasherBuf[:]))
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interpreter.intPool.put(offset, size)
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return nil, nil
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}
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func opAddress(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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callContext.stack.push(interpreter.intPool.get().SetBytes(callContext.contract.Address().Bytes()))
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return nil, nil
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}
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func opBalance(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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slot := callContext.stack.peek()
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slot.Set(interpreter.evm.StateDB.GetBalance(common.BigToAddress(slot)))
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return nil, nil
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}
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func opOrigin(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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callContext.stack.push(interpreter.intPool.get().SetBytes(interpreter.evm.Origin.Bytes()))
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return nil, nil
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}
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func opCaller(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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callContext.stack.push(interpreter.intPool.get().SetBytes(callContext.contract.Caller().Bytes()))
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return nil, nil
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}
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func opCallValue(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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callContext.stack.push(interpreter.intPool.get().Set(callContext.contract.value))
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return nil, nil
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}
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func opCallDataLoad(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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callContext.stack.push(interpreter.intPool.get().SetBytes(getDataBig(callContext.contract.Input, callContext.stack.pop(), big32)))
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return nil, nil
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}
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func opCallDataSize(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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callContext.stack.push(interpreter.intPool.get().SetInt64(int64(len(callContext.contract.Input))))
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return nil, nil
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}
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func opCallDataCopy(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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var (
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memOffset = callContext.stack.pop()
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dataOffset = callContext.stack.pop()
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length = callContext.stack.pop()
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)
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callContext.memory.Set(memOffset.Uint64(), length.Uint64(), getDataBig(callContext.contract.Input, dataOffset, length))
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interpreter.intPool.put(memOffset, dataOffset, length)
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return nil, nil
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}
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func opReturnDataSize(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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callContext.stack.push(interpreter.intPool.get().SetUint64(uint64(len(interpreter.returnData))))
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return nil, nil
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}
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func opReturnDataCopy(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
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|
var (
|
|
memOffset = callContext.stack.pop()
|
|
dataOffset = callContext.stack.pop()
|
|
length = callContext.stack.pop()
|
|
|
|
end = interpreter.intPool.get().Add(dataOffset, length)
|
|
)
|
|
defer interpreter.intPool.put(memOffset, dataOffset, length, end)
|
|
|
|
if !end.IsUint64() || uint64(len(interpreter.returnData)) < end.Uint64() {
|
|
return nil, ErrReturnDataOutOfBounds
|
|
}
|
|
callContext.memory.Set(memOffset.Uint64(), length.Uint64(), interpreter.returnData[dataOffset.Uint64():end.Uint64()])
|
|
|
|
return nil, nil
|
|
}
|
|
|
|
func opExtCodeSize(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
slot := callContext.stack.peek()
|
|
slot.SetUint64(uint64(interpreter.evm.StateDB.GetCodeSize(common.BigToAddress(slot))))
|
|
|
|
return nil, nil
|
|
}
|
|
|
|
func opCodeSize(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
l := interpreter.intPool.get().SetInt64(int64(len(callContext.contract.Code)))
|
|
callContext.stack.push(l)
|
|
|
|
return nil, nil
|
|
}
|
|
|
|
func opCodeCopy(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
var (
|
|
memOffset = callContext.stack.pop()
|
|
codeOffset = callContext.stack.pop()
|
|
length = callContext.stack.pop()
|
|
)
|
|
codeCopy := getDataBig(callContext.contract.Code, codeOffset, length)
|
|
callContext.memory.Set(memOffset.Uint64(), length.Uint64(), codeCopy)
|
|
|
|
interpreter.intPool.put(memOffset, codeOffset, length)
|
|
return nil, nil
|
|
}
|
|
|
|
func opExtCodeCopy(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
var (
|
|
addr = common.BigToAddress(callContext.stack.pop())
|
|
memOffset = callContext.stack.pop()
|
|
codeOffset = callContext.stack.pop()
|
|
length = callContext.stack.pop()
|
|
)
|
|
codeCopy := getDataBig(interpreter.evm.StateDB.GetCode(addr), codeOffset, length)
|
|
callContext.memory.Set(memOffset.Uint64(), length.Uint64(), codeCopy)
|
|
|
|
interpreter.intPool.put(memOffset, codeOffset, length)
|
|
return nil, nil
|
|
}
|
|
|
|
// opExtCodeHash returns the code hash of a specified account.
|
|
// There are several cases when the function is called, while we can relay everything
|
|
// to `state.GetCodeHash` function to ensure the correctness.
|
|
// (1) Caller tries to get the code hash of a normal contract account, state
|
|
// should return the relative code hash and set it as the result.
|
|
//
|
|
// (2) Caller tries to get the code hash of a non-existent account, state should
|
|
// return common.Hash{} and zero will be set as the result.
|
|
//
|
|
// (3) Caller tries to get the code hash for an account without contract code,
|
|
// state should return emptyCodeHash(0xc5d246...) as the result.
|
|
//
|
|
// (4) Caller tries to get the code hash of a precompiled account, the result
|
|
// should be zero or emptyCodeHash.
|
|
//
|
|
// It is worth noting that in order to avoid unnecessary create and clean,
|
|
// all precompile accounts on mainnet have been transferred 1 wei, so the return
|
|
// here should be emptyCodeHash.
|
|
// If the precompile account is not transferred any amount on a private or
|
|
// customized chain, the return value will be zero.
|
|
//
|
|
// (5) Caller tries to get the code hash for an account which is marked as suicided
|
|
// in the current transaction, the code hash of this account should be returned.
|
|
//
|
|
// (6) Caller tries to get the code hash for an account which is marked as deleted,
|
|
// this account should be regarded as a non-existent account and zero should be returned.
|
|
func opExtCodeHash(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
slot := callContext.stack.peek()
|
|
address := common.BigToAddress(slot)
|
|
if interpreter.evm.StateDB.Empty(address) {
|
|
slot.SetUint64(0)
|
|
} else {
|
|
slot.SetBytes(interpreter.evm.StateDB.GetCodeHash(address).Bytes())
|
|
}
|
|
return nil, nil
|
|
}
|
|
|
|
func opGasprice(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
callContext.stack.push(interpreter.intPool.get().Set(interpreter.evm.GasPrice))
|
|
return nil, nil
|
|
}
|
|
|
|
func opBlockhash(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
num := callContext.stack.pop()
|
|
|
|
n := interpreter.intPool.get().Sub(interpreter.evm.BlockNumber, common.Big257)
|
|
if num.Cmp(n) > 0 && num.Cmp(interpreter.evm.BlockNumber) < 0 {
|
|
callContext.stack.push(interpreter.evm.GetHash(num.Uint64()).Big())
|
|
} else {
|
|
callContext.stack.push(interpreter.intPool.getZero())
|
|
}
|
|
interpreter.intPool.put(num, n)
|
|
return nil, nil
|
|
}
|
|
|
|
func opCoinbase(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
callContext.stack.push(interpreter.intPool.get().SetBytes(interpreter.evm.Coinbase.Bytes()))
|
|
return nil, nil
|
|
}
|
|
|
|
func opTimestamp(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
callContext.stack.push(math.U256(interpreter.intPool.get().Set(interpreter.evm.Time)))
|
|
return nil, nil
|
|
}
|
|
|
|
func opNumber(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
callContext.stack.push(math.U256(interpreter.intPool.get().Set(interpreter.evm.BlockNumber)))
|
|
return nil, nil
|
|
}
|
|
|
|
func opDifficulty(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
callContext.stack.push(math.U256(interpreter.intPool.get().Set(interpreter.evm.Difficulty)))
|
|
return nil, nil
|
|
}
|
|
|
|
func opGasLimit(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
callContext.stack.push(math.U256(interpreter.intPool.get().SetUint64(interpreter.evm.GasLimit)))
|
|
return nil, nil
|
|
}
|
|
|
|
func opPop(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
interpreter.intPool.putOne(callContext.stack.pop())
|
|
return nil, nil
|
|
}
|
|
|
|
func opMload(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
v := callContext.stack.peek()
|
|
offset := v.Int64()
|
|
v.SetBytes(callContext.memory.GetPtr(offset, 32))
|
|
return nil, nil
|
|
}
|
|
|
|
func opMstore(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
// pop value of the stack
|
|
mStart, val := callContext.stack.pop(), callContext.stack.pop()
|
|
callContext.memory.Set32(mStart.Uint64(), val)
|
|
|
|
interpreter.intPool.put(mStart, val)
|
|
return nil, nil
|
|
}
|
|
|
|
func opMstore8(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
off, val := callContext.stack.pop().Int64(), callContext.stack.pop().Int64()
|
|
callContext.memory.store[off] = byte(val & 0xff)
|
|
|
|
return nil, nil
|
|
}
|
|
|
|
func opSload(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
loc := callContext.stack.peek()
|
|
val := interpreter.evm.StateDB.GetState(callContext.contract.Address(), common.BigToHash(loc))
|
|
loc.SetBytes(val.Bytes())
|
|
return nil, nil
|
|
}
|
|
|
|
func opSstore(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
loc := common.BigToHash(callContext.stack.pop())
|
|
val := callContext.stack.pop()
|
|
interpreter.evm.StateDB.SetState(callContext.contract.Address(), loc, common.BigToHash(val))
|
|
|
|
interpreter.intPool.putOne(val)
|
|
return nil, nil
|
|
}
|
|
|
|
func opJump(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
pos := callContext.stack.pop()
|
|
if !callContext.contract.validJumpdest(pos) {
|
|
return nil, ErrInvalidJump
|
|
}
|
|
*pc = pos.Uint64()
|
|
|
|
interpreter.intPool.putOne(pos)
|
|
return nil, nil
|
|
}
|
|
|
|
func opJumpi(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
pos, cond := callContext.stack.pop(), callContext.stack.pop()
|
|
if cond.Sign() != 0 {
|
|
if !callContext.contract.validJumpdest(pos) {
|
|
return nil, ErrInvalidJump
|
|
}
|
|
*pc = pos.Uint64()
|
|
} else {
|
|
*pc++
|
|
}
|
|
|
|
interpreter.intPool.put(pos, cond)
|
|
return nil, nil
|
|
}
|
|
|
|
func opJumpdest(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
return nil, nil
|
|
}
|
|
|
|
func opBeginSub(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
return nil, ErrInvalidSubroutineEntry
|
|
}
|
|
|
|
func opJumpSub(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
if len(callContext.rstack.data) >= 1023 {
|
|
return nil, ErrReturnStackExceeded
|
|
}
|
|
pos := callContext.stack.pop()
|
|
if !pos.IsUint64() {
|
|
return nil, ErrInvalidJump
|
|
}
|
|
posU64 := pos.Uint64()
|
|
if !callContext.contract.validJumpSubdest(posU64) {
|
|
return nil, ErrInvalidJump
|
|
}
|
|
callContext.rstack.push(*pc)
|
|
*pc = posU64 + 1
|
|
interpreter.intPool.put(pos)
|
|
return nil, nil
|
|
}
|
|
|
|
func opReturnSub(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
if len(callContext.rstack.data) == 0 {
|
|
return nil, ErrInvalidRetsub
|
|
}
|
|
// Other than the check that the return stack is not empty, there is no
|
|
// need to validate the pc from 'returns', since we only ever push valid
|
|
//values onto it via jumpsub.
|
|
*pc = callContext.rstack.pop() + 1
|
|
return nil, nil
|
|
}
|
|
|
|
func opPc(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
callContext.stack.push(interpreter.intPool.get().SetUint64(*pc))
|
|
return nil, nil
|
|
}
|
|
|
|
func opMsize(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
callContext.stack.push(interpreter.intPool.get().SetInt64(int64(callContext.memory.Len())))
|
|
return nil, nil
|
|
}
|
|
|
|
func opGas(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
callContext.stack.push(interpreter.intPool.get().SetUint64(callContext.contract.Gas))
|
|
return nil, nil
|
|
}
|
|
|
|
func opCreate(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
var (
|
|
value = callContext.stack.pop()
|
|
offset, size = callContext.stack.pop(), callContext.stack.pop()
|
|
input = callContext.memory.GetCopy(offset.Int64(), size.Int64())
|
|
gas = callContext.contract.Gas
|
|
)
|
|
if interpreter.evm.chainRules.IsEIP150 {
|
|
gas -= gas / 64
|
|
}
|
|
|
|
callContext.contract.UseGas(gas)
|
|
res, addr, returnGas, suberr := interpreter.evm.Create(callContext.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 interpreter.evm.chainRules.IsHomestead && suberr == ErrCodeStoreOutOfGas {
|
|
callContext.stack.push(interpreter.intPool.getZero())
|
|
} else if suberr != nil && suberr != ErrCodeStoreOutOfGas {
|
|
callContext.stack.push(interpreter.intPool.getZero())
|
|
} else {
|
|
callContext.stack.push(interpreter.intPool.get().SetBytes(addr.Bytes()))
|
|
}
|
|
callContext.contract.Gas += returnGas
|
|
interpreter.intPool.put(value, offset, size)
|
|
|
|
if suberr == ErrExecutionReverted {
|
|
return res, nil
|
|
}
|
|
return nil, nil
|
|
}
|
|
|
|
func opCreate2(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
var (
|
|
endowment = callContext.stack.pop()
|
|
offset, size = callContext.stack.pop(), callContext.stack.pop()
|
|
salt = callContext.stack.pop()
|
|
input = callContext.memory.GetCopy(offset.Int64(), size.Int64())
|
|
gas = callContext.contract.Gas
|
|
)
|
|
|
|
// Apply EIP150
|
|
gas -= gas / 64
|
|
callContext.contract.UseGas(gas)
|
|
res, addr, returnGas, suberr := interpreter.evm.Create2(callContext.contract, input, gas, endowment, salt)
|
|
// Push item on the stack based on the returned error.
|
|
if suberr != nil {
|
|
callContext.stack.push(interpreter.intPool.getZero())
|
|
} else {
|
|
callContext.stack.push(interpreter.intPool.get().SetBytes(addr.Bytes()))
|
|
}
|
|
callContext.contract.Gas += returnGas
|
|
interpreter.intPool.put(endowment, offset, size, salt)
|
|
|
|
if suberr == ErrExecutionReverted {
|
|
return res, nil
|
|
}
|
|
return nil, nil
|
|
}
|
|
|
|
func opCall(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
// Pop gas. The actual gas in interpreter.evm.callGasTemp.
|
|
interpreter.intPool.putOne(callContext.stack.pop())
|
|
gas := interpreter.evm.callGasTemp
|
|
// Pop other call parameters.
|
|
addr, value, inOffset, inSize, retOffset, retSize := callContext.stack.pop(), callContext.stack.pop(), callContext.stack.pop(), callContext.stack.pop(), callContext.stack.pop(), callContext.stack.pop()
|
|
toAddr := common.BigToAddress(addr)
|
|
value = math.U256(value)
|
|
// Get the arguments from the memory.
|
|
args := callContext.memory.GetPtr(inOffset.Int64(), inSize.Int64())
|
|
|
|
if value.Sign() != 0 {
|
|
gas += params.CallStipend
|
|
}
|
|
ret, returnGas, err := interpreter.evm.Call(callContext.contract, toAddr, args, gas, value)
|
|
if err != nil {
|
|
callContext.stack.push(interpreter.intPool.getZero())
|
|
} else {
|
|
callContext.stack.push(interpreter.intPool.get().SetUint64(1))
|
|
}
|
|
if err == nil || err == ErrExecutionReverted {
|
|
callContext.memory.Set(retOffset.Uint64(), retSize.Uint64(), ret)
|
|
}
|
|
callContext.contract.Gas += returnGas
|
|
|
|
interpreter.intPool.put(addr, value, inOffset, inSize, retOffset, retSize)
|
|
return ret, nil
|
|
}
|
|
|
|
func opCallCode(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
// Pop gas. The actual gas is in interpreter.evm.callGasTemp.
|
|
interpreter.intPool.putOne(callContext.stack.pop())
|
|
gas := interpreter.evm.callGasTemp
|
|
// Pop other call parameters.
|
|
addr, value, inOffset, inSize, retOffset, retSize := callContext.stack.pop(), callContext.stack.pop(), callContext.stack.pop(), callContext.stack.pop(), callContext.stack.pop(), callContext.stack.pop()
|
|
toAddr := common.BigToAddress(addr)
|
|
value = math.U256(value)
|
|
// Get arguments from the memory.
|
|
args := callContext.memory.GetPtr(inOffset.Int64(), inSize.Int64())
|
|
|
|
if value.Sign() != 0 {
|
|
gas += params.CallStipend
|
|
}
|
|
ret, returnGas, err := interpreter.evm.CallCode(callContext.contract, toAddr, args, gas, value)
|
|
if err != nil {
|
|
callContext.stack.push(interpreter.intPool.getZero())
|
|
} else {
|
|
callContext.stack.push(interpreter.intPool.get().SetUint64(1))
|
|
}
|
|
if err == nil || err == ErrExecutionReverted {
|
|
callContext.memory.Set(retOffset.Uint64(), retSize.Uint64(), ret)
|
|
}
|
|
callContext.contract.Gas += returnGas
|
|
|
|
interpreter.intPool.put(addr, value, inOffset, inSize, retOffset, retSize)
|
|
return ret, nil
|
|
}
|
|
|
|
func opDelegateCall(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
// Pop gas. The actual gas is in interpreter.evm.callGasTemp.
|
|
interpreter.intPool.putOne(callContext.stack.pop())
|
|
gas := interpreter.evm.callGasTemp
|
|
// Pop other call parameters.
|
|
addr, inOffset, inSize, retOffset, retSize := callContext.stack.pop(), callContext.stack.pop(), callContext.stack.pop(), callContext.stack.pop(), callContext.stack.pop()
|
|
toAddr := common.BigToAddress(addr)
|
|
// Get arguments from the memory.
|
|
args := callContext.memory.GetPtr(inOffset.Int64(), inSize.Int64())
|
|
|
|
ret, returnGas, err := interpreter.evm.DelegateCall(callContext.contract, toAddr, args, gas)
|
|
if err != nil {
|
|
callContext.stack.push(interpreter.intPool.getZero())
|
|
} else {
|
|
callContext.stack.push(interpreter.intPool.get().SetUint64(1))
|
|
}
|
|
if err == nil || err == ErrExecutionReverted {
|
|
callContext.memory.Set(retOffset.Uint64(), retSize.Uint64(), ret)
|
|
}
|
|
callContext.contract.Gas += returnGas
|
|
|
|
interpreter.intPool.put(addr, inOffset, inSize, retOffset, retSize)
|
|
return ret, nil
|
|
}
|
|
|
|
func opStaticCall(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
// Pop gas. The actual gas is in interpreter.evm.callGasTemp.
|
|
interpreter.intPool.putOne(callContext.stack.pop())
|
|
gas := interpreter.evm.callGasTemp
|
|
// Pop other call parameters.
|
|
addr, inOffset, inSize, retOffset, retSize := callContext.stack.pop(), callContext.stack.pop(), callContext.stack.pop(), callContext.stack.pop(), callContext.stack.pop()
|
|
toAddr := common.BigToAddress(addr)
|
|
// Get arguments from the memory.
|
|
args := callContext.memory.GetPtr(inOffset.Int64(), inSize.Int64())
|
|
|
|
ret, returnGas, err := interpreter.evm.StaticCall(callContext.contract, toAddr, args, gas)
|
|
if err != nil {
|
|
callContext.stack.push(interpreter.intPool.getZero())
|
|
} else {
|
|
callContext.stack.push(interpreter.intPool.get().SetUint64(1))
|
|
}
|
|
if err == nil || err == ErrExecutionReverted {
|
|
callContext.memory.Set(retOffset.Uint64(), retSize.Uint64(), ret)
|
|
}
|
|
callContext.contract.Gas += returnGas
|
|
|
|
interpreter.intPool.put(addr, inOffset, inSize, retOffset, retSize)
|
|
return ret, nil
|
|
}
|
|
|
|
func opReturn(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
offset, size := callContext.stack.pop(), callContext.stack.pop()
|
|
ret := callContext.memory.GetPtr(offset.Int64(), size.Int64())
|
|
|
|
interpreter.intPool.put(offset, size)
|
|
return ret, nil
|
|
}
|
|
|
|
func opRevert(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
offset, size := callContext.stack.pop(), callContext.stack.pop()
|
|
ret := callContext.memory.GetPtr(offset.Int64(), size.Int64())
|
|
|
|
interpreter.intPool.put(offset, size)
|
|
return ret, nil
|
|
}
|
|
|
|
func opStop(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
return nil, nil
|
|
}
|
|
|
|
func opSuicide(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
balance := interpreter.evm.StateDB.GetBalance(callContext.contract.Address())
|
|
interpreter.evm.StateDB.AddBalance(common.BigToAddress(callContext.stack.pop()), balance)
|
|
|
|
interpreter.evm.StateDB.Suicide(callContext.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, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
topics := make([]common.Hash, size)
|
|
mStart, mSize := callContext.stack.pop(), callContext.stack.pop()
|
|
for i := 0; i < size; i++ {
|
|
topics[i] = common.BigToHash(callContext.stack.pop())
|
|
}
|
|
|
|
d := callContext.memory.GetCopy(mStart.Int64(), mSize.Int64())
|
|
interpreter.evm.StateDB.AddLog(&types.Log{
|
|
Address: callContext.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: interpreter.evm.BlockNumber.Uint64(),
|
|
})
|
|
|
|
interpreter.intPool.put(mStart, mSize)
|
|
return nil, nil
|
|
}
|
|
}
|
|
|
|
// opPush1 is a specialized version of pushN
|
|
func opPush1(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
var (
|
|
codeLen = uint64(len(callContext.contract.Code))
|
|
integer = interpreter.intPool.get()
|
|
)
|
|
*pc += 1
|
|
if *pc < codeLen {
|
|
callContext.stack.push(integer.SetUint64(uint64(callContext.contract.Code[*pc])))
|
|
} else {
|
|
callContext.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, callContext *callCtx) ([]byte, error) {
|
|
codeLen := len(callContext.contract.Code)
|
|
|
|
startMin := codeLen
|
|
if int(*pc+1) < startMin {
|
|
startMin = int(*pc + 1)
|
|
}
|
|
|
|
endMin := codeLen
|
|
if startMin+pushByteSize < endMin {
|
|
endMin = startMin + pushByteSize
|
|
}
|
|
|
|
integer := interpreter.intPool.get()
|
|
callContext.stack.push(integer.SetBytes(common.RightPadBytes(callContext.contract.Code[startMin:endMin], pushByteSize)))
|
|
|
|
*pc += size
|
|
return nil, nil
|
|
}
|
|
}
|
|
|
|
// make dup instruction function
|
|
func makeDup(size int64) executionFunc {
|
|
return func(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
callContext.stack.dup(interpreter.intPool, 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++
|
|
return func(pc *uint64, interpreter *EVMInterpreter, callContext *callCtx) ([]byte, error) {
|
|
callContext.stack.swap(int(size))
|
|
return nil, nil
|
|
}
|
|
}
|