d8ada03eac
* core/vm: return copy of input slice in identity precompile. don't deep copy return data slice upon call completion * make use of common.CopyBytes
923 lines
29 KiB
Go
923 lines
29 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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"sync/atomic"
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"github.com/ethereum/go-ethereum/common"
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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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"github.com/holiman/uint256"
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"golang.org/x/crypto/sha3"
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)
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func opAdd(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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x, y := scope.Stack.pop(), scope.Stack.peek()
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y.Add(&x, y)
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return nil, nil
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}
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func opSub(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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x, y := scope.Stack.pop(), scope.Stack.peek()
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y.Sub(&x, y)
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return nil, nil
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}
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func opMul(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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x, y := scope.Stack.pop(), scope.Stack.peek()
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y.Mul(&x, y)
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return nil, nil
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}
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func opDiv(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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x, y := scope.Stack.pop(), scope.Stack.peek()
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y.Div(&x, y)
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return nil, nil
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}
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func opSdiv(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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x, y := scope.Stack.pop(), scope.Stack.peek()
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y.SDiv(&x, y)
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return nil, nil
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}
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func opMod(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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x, y := scope.Stack.pop(), scope.Stack.peek()
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y.Mod(&x, y)
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return nil, nil
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}
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func opSmod(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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x, y := scope.Stack.pop(), scope.Stack.peek()
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y.SMod(&x, y)
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return nil, nil
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}
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func opExp(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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base, exponent := scope.Stack.pop(), scope.Stack.peek()
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exponent.Exp(&base, exponent)
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return nil, nil
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}
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func opSignExtend(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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back, num := scope.Stack.pop(), scope.Stack.peek()
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num.ExtendSign(num, &back)
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return nil, nil
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}
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func opNot(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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x := scope.Stack.peek()
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x.Not(x)
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return nil, nil
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}
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func opLt(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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x, y := scope.Stack.pop(), scope.Stack.peek()
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if x.Lt(y) {
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y.SetOne()
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} else {
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y.Clear()
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}
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return nil, nil
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}
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func opGt(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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x, y := scope.Stack.pop(), scope.Stack.peek()
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if x.Gt(y) {
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y.SetOne()
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} else {
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y.Clear()
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}
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return nil, nil
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}
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func opSlt(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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x, y := scope.Stack.pop(), scope.Stack.peek()
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if x.Slt(y) {
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y.SetOne()
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} else {
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y.Clear()
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}
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return nil, nil
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}
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func opSgt(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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x, y := scope.Stack.pop(), scope.Stack.peek()
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if x.Sgt(y) {
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y.SetOne()
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} else {
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y.Clear()
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}
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return nil, nil
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}
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func opEq(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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x, y := scope.Stack.pop(), scope.Stack.peek()
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if x.Eq(y) {
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y.SetOne()
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} else {
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y.Clear()
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}
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return nil, nil
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}
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func opIszero(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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x := scope.Stack.peek()
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if x.IsZero() {
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x.SetOne()
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} else {
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x.Clear()
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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, scope *ScopeContext) ([]byte, error) {
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x, y := scope.Stack.pop(), scope.Stack.peek()
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y.And(&x, y)
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return nil, nil
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}
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func opOr(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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x, y := scope.Stack.pop(), scope.Stack.peek()
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y.Or(&x, y)
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return nil, nil
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}
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func opXor(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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x, y := scope.Stack.pop(), scope.Stack.peek()
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y.Xor(&x, y)
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return nil, nil
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}
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func opByte(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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th, val := scope.Stack.pop(), scope.Stack.peek()
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val.Byte(&th)
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return nil, nil
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}
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func opAddmod(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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x, y, z := scope.Stack.pop(), scope.Stack.pop(), scope.Stack.peek()
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if z.IsZero() {
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z.Clear()
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} else {
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z.AddMod(&x, &y, z)
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}
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return nil, nil
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}
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func opMulmod(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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x, y, z := scope.Stack.pop(), scope.Stack.pop(), scope.Stack.peek()
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z.MulMod(&x, &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, scope *ScopeContext) ([]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 := scope.Stack.pop(), scope.Stack.peek()
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if shift.LtUint64(256) {
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value.Lsh(value, uint(shift.Uint64()))
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} else {
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value.Clear()
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}
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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, scope *ScopeContext) ([]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 := scope.Stack.pop(), scope.Stack.peek()
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if shift.LtUint64(256) {
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value.Rsh(value, uint(shift.Uint64()))
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} else {
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value.Clear()
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}
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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, scope *ScopeContext) ([]byte, error) {
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shift, value := scope.Stack.pop(), scope.Stack.peek()
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if shift.GtUint64(256) {
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if value.Sign() >= 0 {
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value.Clear()
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} else {
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// Max negative shift: all bits set
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value.SetAllOne()
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}
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return nil, nil
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}
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n := uint(shift.Uint64())
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value.SRsh(value, n)
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return nil, nil
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}
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func opKeccak256(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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offset, size := scope.Stack.pop(), scope.Stack.peek()
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data := scope.Memory.GetPtr(int64(offset.Uint64()), int64(size.Uint64()))
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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.Config.EnablePreimageRecording {
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evm.StateDB.AddPreimage(interpreter.hasherBuf, data)
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}
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size.SetBytes(interpreter.hasherBuf[:])
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return nil, nil
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}
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func opAddress(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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scope.Stack.push(new(uint256.Int).SetBytes(scope.Contract.Address().Bytes()))
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return nil, nil
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}
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func opBalance(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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slot := scope.Stack.peek()
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address := common.Address(slot.Bytes20())
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slot.SetFromBig(interpreter.evm.StateDB.GetBalance(address))
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return nil, nil
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}
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func opOrigin(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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scope.Stack.push(new(uint256.Int).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, scope *ScopeContext) ([]byte, error) {
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scope.Stack.push(new(uint256.Int).SetBytes(scope.Contract.Caller().Bytes()))
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return nil, nil
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}
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func opCallValue(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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v, _ := uint256.FromBig(scope.Contract.value)
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scope.Stack.push(v)
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return nil, nil
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}
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func opCallDataLoad(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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x := scope.Stack.peek()
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if offset, overflow := x.Uint64WithOverflow(); !overflow {
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data := getData(scope.Contract.Input, offset, 32)
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x.SetBytes(data)
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} else {
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x.Clear()
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}
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return nil, nil
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}
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func opCallDataSize(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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scope.Stack.push(new(uint256.Int).SetUint64(uint64(len(scope.Contract.Input))))
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return nil, nil
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}
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func opCallDataCopy(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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var (
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memOffset = scope.Stack.pop()
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dataOffset = scope.Stack.pop()
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length = scope.Stack.pop()
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)
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dataOffset64, overflow := dataOffset.Uint64WithOverflow()
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if overflow {
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dataOffset64 = 0xffffffffffffffff
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}
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// These values are checked for overflow during gas cost calculation
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memOffset64 := memOffset.Uint64()
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length64 := length.Uint64()
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scope.Memory.Set(memOffset64, length64, getData(scope.Contract.Input, dataOffset64, length64))
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return nil, nil
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}
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func opReturnDataSize(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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scope.Stack.push(new(uint256.Int).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, scope *ScopeContext) ([]byte, error) {
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var (
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memOffset = scope.Stack.pop()
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dataOffset = scope.Stack.pop()
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length = scope.Stack.pop()
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)
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offset64, overflow := dataOffset.Uint64WithOverflow()
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if overflow {
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return nil, ErrReturnDataOutOfBounds
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}
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// we can reuse dataOffset now (aliasing it for clarity)
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var end = dataOffset
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end.Add(&dataOffset, &length)
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end64, overflow := end.Uint64WithOverflow()
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if overflow || uint64(len(interpreter.returnData)) < end64 {
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return nil, ErrReturnDataOutOfBounds
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}
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scope.Memory.Set(memOffset.Uint64(), length.Uint64(), interpreter.returnData[offset64:end64])
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return nil, nil
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}
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func opExtCodeSize(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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slot := scope.Stack.peek()
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slot.SetUint64(uint64(interpreter.evm.StateDB.GetCodeSize(slot.Bytes20())))
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return nil, nil
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}
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func opCodeSize(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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l := new(uint256.Int)
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l.SetUint64(uint64(len(scope.Contract.Code)))
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scope.Stack.push(l)
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return nil, nil
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}
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func opCodeCopy(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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var (
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memOffset = scope.Stack.pop()
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codeOffset = scope.Stack.pop()
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length = scope.Stack.pop()
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)
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uint64CodeOffset, overflow := codeOffset.Uint64WithOverflow()
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if overflow {
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uint64CodeOffset = 0xffffffffffffffff
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}
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codeCopy := getData(scope.Contract.Code, uint64CodeOffset, length.Uint64())
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scope.Memory.Set(memOffset.Uint64(), length.Uint64(), codeCopy)
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return nil, nil
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}
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func opExtCodeCopy(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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var (
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stack = scope.Stack
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a = stack.pop()
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memOffset = stack.pop()
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codeOffset = stack.pop()
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length = stack.pop()
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)
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uint64CodeOffset, overflow := codeOffset.Uint64WithOverflow()
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if overflow {
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uint64CodeOffset = 0xffffffffffffffff
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}
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addr := common.Address(a.Bytes20())
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codeCopy := getData(interpreter.evm.StateDB.GetCode(addr), uint64CodeOffset, length.Uint64())
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scope.Memory.Set(memOffset.Uint64(), length.Uint64(), codeCopy)
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return nil, nil
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}
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// opExtCodeHash returns the code hash of a specified account.
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// There are several cases when the function is called, while we can relay everything
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// to `state.GetCodeHash` function to ensure the correctness.
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//
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// 1. Caller tries to get the code hash of a normal contract account, state
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// should return the relative code hash and set it as the result.
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//
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// 2. Caller tries to get the code hash of a non-existent account, state should
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// return common.Hash{} and zero will be set as the result.
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//
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// 3. Caller tries to get the code hash for an account without contract code, state
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// should return emptyCodeHash(0xc5d246...) as the result.
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//
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// 4. Caller tries to get the code hash of a precompiled account, the result should be
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// zero or emptyCodeHash.
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//
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// It is worth noting that in order to avoid unnecessary create and clean, all precompile
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// accounts on mainnet have been transferred 1 wei, so the return here should be
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// emptyCodeHash. If the precompile account is not transferred any amount on a private or
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// customized chain, the return value will be zero.
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//
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// 5. Caller tries to get the code hash for an account which is marked as suicided
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// in the current transaction, the code hash of this account should be returned.
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//
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// 6. Caller tries to get the code hash for an account which is marked as deleted, this
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// account should be regarded as a non-existent account and zero should be returned.
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func opExtCodeHash(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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slot := scope.Stack.peek()
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address := common.Address(slot.Bytes20())
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if interpreter.evm.StateDB.Empty(address) {
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slot.Clear()
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} else {
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slot.SetBytes(interpreter.evm.StateDB.GetCodeHash(address).Bytes())
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}
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return nil, nil
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}
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func opGasprice(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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v, _ := uint256.FromBig(interpreter.evm.GasPrice)
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scope.Stack.push(v)
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return nil, nil
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}
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func opBlockhash(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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num := scope.Stack.peek()
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num64, overflow := num.Uint64WithOverflow()
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if overflow {
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num.Clear()
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return nil, nil
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}
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var upper, lower uint64
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upper = interpreter.evm.Context.BlockNumber.Uint64()
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if upper < 257 {
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lower = 0
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} else {
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lower = upper - 256
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}
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if num64 >= lower && num64 < upper {
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num.SetBytes(interpreter.evm.Context.GetHash(num64).Bytes())
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} else {
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num.Clear()
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}
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return nil, nil
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}
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func opCoinbase(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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scope.Stack.push(new(uint256.Int).SetBytes(interpreter.evm.Context.Coinbase.Bytes()))
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return nil, nil
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}
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func opTimestamp(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
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v, _ := uint256.FromBig(interpreter.evm.Context.Time)
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scope.Stack.push(v)
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return nil, nil
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}
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|
func opNumber(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
v, _ := uint256.FromBig(interpreter.evm.Context.BlockNumber)
|
|
scope.Stack.push(v)
|
|
return nil, nil
|
|
}
|
|
|
|
func opDifficulty(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
v, _ := uint256.FromBig(interpreter.evm.Context.Difficulty)
|
|
scope.Stack.push(v)
|
|
return nil, nil
|
|
}
|
|
|
|
func opRandom(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
v := new(uint256.Int).SetBytes(interpreter.evm.Context.Random.Bytes())
|
|
scope.Stack.push(v)
|
|
return nil, nil
|
|
}
|
|
|
|
func opGasLimit(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
scope.Stack.push(new(uint256.Int).SetUint64(interpreter.evm.Context.GasLimit))
|
|
return nil, nil
|
|
}
|
|
|
|
func opPop(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
scope.Stack.pop()
|
|
return nil, nil
|
|
}
|
|
|
|
func opMload(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
v := scope.Stack.peek()
|
|
offset := int64(v.Uint64())
|
|
v.SetBytes(scope.Memory.GetPtr(offset, 32))
|
|
return nil, nil
|
|
}
|
|
|
|
func opMstore(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
// pop value of the stack
|
|
mStart, val := scope.Stack.pop(), scope.Stack.pop()
|
|
scope.Memory.Set32(mStart.Uint64(), &val)
|
|
return nil, nil
|
|
}
|
|
|
|
func opMstore8(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
off, val := scope.Stack.pop(), scope.Stack.pop()
|
|
scope.Memory.store[off.Uint64()] = byte(val.Uint64())
|
|
return nil, nil
|
|
}
|
|
|
|
func opSload(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
loc := scope.Stack.peek()
|
|
hash := common.Hash(loc.Bytes32())
|
|
val := interpreter.evm.StateDB.GetState(scope.Contract.Address(), hash)
|
|
loc.SetBytes(val.Bytes())
|
|
return nil, nil
|
|
}
|
|
|
|
func opSstore(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
if interpreter.readOnly {
|
|
return nil, ErrWriteProtection
|
|
}
|
|
loc := scope.Stack.pop()
|
|
val := scope.Stack.pop()
|
|
interpreter.evm.StateDB.SetState(scope.Contract.Address(),
|
|
loc.Bytes32(), val.Bytes32())
|
|
return nil, nil
|
|
}
|
|
|
|
func opJump(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
if atomic.LoadInt32(&interpreter.evm.abort) != 0 {
|
|
return nil, errStopToken
|
|
}
|
|
pos := scope.Stack.pop()
|
|
if !scope.Contract.validJumpdest(&pos) {
|
|
return nil, ErrInvalidJump
|
|
}
|
|
*pc = pos.Uint64() - 1 // pc will be increased by the interpreter loop
|
|
return nil, nil
|
|
}
|
|
|
|
func opJumpi(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
if atomic.LoadInt32(&interpreter.evm.abort) != 0 {
|
|
return nil, errStopToken
|
|
}
|
|
pos, cond := scope.Stack.pop(), scope.Stack.pop()
|
|
if !cond.IsZero() {
|
|
if !scope.Contract.validJumpdest(&pos) {
|
|
return nil, ErrInvalidJump
|
|
}
|
|
*pc = pos.Uint64() - 1 // pc will be increased by the interpreter loop
|
|
}
|
|
return nil, nil
|
|
}
|
|
|
|
func opJumpdest(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
return nil, nil
|
|
}
|
|
|
|
func opPc(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
scope.Stack.push(new(uint256.Int).SetUint64(*pc))
|
|
return nil, nil
|
|
}
|
|
|
|
func opMsize(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
scope.Stack.push(new(uint256.Int).SetUint64(uint64(scope.Memory.Len())))
|
|
return nil, nil
|
|
}
|
|
|
|
func opGas(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
scope.Stack.push(new(uint256.Int).SetUint64(scope.Contract.Gas))
|
|
return nil, nil
|
|
}
|
|
|
|
func opCreate(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
if interpreter.readOnly {
|
|
return nil, ErrWriteProtection
|
|
}
|
|
var (
|
|
value = scope.Stack.pop()
|
|
offset, size = scope.Stack.pop(), scope.Stack.pop()
|
|
input = scope.Memory.GetCopy(int64(offset.Uint64()), int64(size.Uint64()))
|
|
gas = scope.Contract.Gas
|
|
)
|
|
if interpreter.evm.chainRules.IsEIP150 {
|
|
gas -= gas / 64
|
|
}
|
|
// reuse size int for stackvalue
|
|
stackvalue := size
|
|
|
|
scope.Contract.UseGas(gas)
|
|
//TODO: use uint256.Int instead of converting with toBig()
|
|
var bigVal = big0
|
|
if !value.IsZero() {
|
|
bigVal = value.ToBig()
|
|
}
|
|
|
|
res, addr, returnGas, suberr := interpreter.evm.Create(scope.Contract, input, gas, bigVal)
|
|
// 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 {
|
|
stackvalue.Clear()
|
|
} else if suberr != nil && suberr != ErrCodeStoreOutOfGas {
|
|
stackvalue.Clear()
|
|
} else {
|
|
stackvalue.SetBytes(addr.Bytes())
|
|
}
|
|
scope.Stack.push(&stackvalue)
|
|
scope.Contract.Gas += returnGas
|
|
|
|
if suberr == ErrExecutionReverted {
|
|
interpreter.returnData = res // set REVERT data to return data buffer
|
|
return res, nil
|
|
}
|
|
interpreter.returnData = nil // clear dirty return data buffer
|
|
return nil, nil
|
|
}
|
|
|
|
func opCreate2(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
if interpreter.readOnly {
|
|
return nil, ErrWriteProtection
|
|
}
|
|
var (
|
|
endowment = scope.Stack.pop()
|
|
offset, size = scope.Stack.pop(), scope.Stack.pop()
|
|
salt = scope.Stack.pop()
|
|
input = scope.Memory.GetCopy(int64(offset.Uint64()), int64(size.Uint64()))
|
|
gas = scope.Contract.Gas
|
|
)
|
|
|
|
// Apply EIP150
|
|
gas -= gas / 64
|
|
scope.Contract.UseGas(gas)
|
|
// reuse size int for stackvalue
|
|
stackvalue := size
|
|
//TODO: use uint256.Int instead of converting with toBig()
|
|
bigEndowment := big0
|
|
if !endowment.IsZero() {
|
|
bigEndowment = endowment.ToBig()
|
|
}
|
|
res, addr, returnGas, suberr := interpreter.evm.Create2(scope.Contract, input, gas,
|
|
bigEndowment, &salt)
|
|
// Push item on the stack based on the returned error.
|
|
if suberr != nil {
|
|
stackvalue.Clear()
|
|
} else {
|
|
stackvalue.SetBytes(addr.Bytes())
|
|
}
|
|
scope.Stack.push(&stackvalue)
|
|
scope.Contract.Gas += returnGas
|
|
|
|
if suberr == ErrExecutionReverted {
|
|
interpreter.returnData = res // set REVERT data to return data buffer
|
|
return res, nil
|
|
}
|
|
interpreter.returnData = nil // clear dirty return data buffer
|
|
return nil, nil
|
|
}
|
|
|
|
func opCall(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
stack := scope.Stack
|
|
// Pop gas. The actual gas in interpreter.evm.callGasTemp.
|
|
// We can use this as a temporary value
|
|
temp := stack.pop()
|
|
gas := interpreter.evm.callGasTemp
|
|
// Pop other call parameters.
|
|
addr, value, inOffset, inSize, retOffset, retSize := stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop()
|
|
toAddr := common.Address(addr.Bytes20())
|
|
// Get the arguments from the memory.
|
|
args := scope.Memory.GetPtr(int64(inOffset.Uint64()), int64(inSize.Uint64()))
|
|
|
|
if interpreter.readOnly && !value.IsZero() {
|
|
return nil, ErrWriteProtection
|
|
}
|
|
var bigVal = big0
|
|
//TODO: use uint256.Int instead of converting with toBig()
|
|
// By using big0 here, we save an alloc for the most common case (non-ether-transferring contract calls),
|
|
// but it would make more sense to extend the usage of uint256.Int
|
|
if !value.IsZero() {
|
|
gas += params.CallStipend
|
|
bigVal = value.ToBig()
|
|
}
|
|
|
|
ret, returnGas, err := interpreter.evm.Call(scope.Contract, toAddr, args, gas, bigVal)
|
|
|
|
if err != nil {
|
|
temp.Clear()
|
|
} else {
|
|
temp.SetOne()
|
|
}
|
|
stack.push(&temp)
|
|
if err == nil || err == ErrExecutionReverted {
|
|
scope.Memory.Set(retOffset.Uint64(), retSize.Uint64(), ret)
|
|
}
|
|
scope.Contract.Gas += returnGas
|
|
|
|
interpreter.returnData = ret
|
|
return ret, nil
|
|
}
|
|
|
|
func opCallCode(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
// Pop gas. The actual gas is in interpreter.evm.callGasTemp.
|
|
stack := scope.Stack
|
|
// We use it as a temporary value
|
|
temp := stack.pop()
|
|
gas := interpreter.evm.callGasTemp
|
|
// Pop other call parameters.
|
|
addr, value, inOffset, inSize, retOffset, retSize := stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop()
|
|
toAddr := common.Address(addr.Bytes20())
|
|
// Get arguments from the memory.
|
|
args := scope.Memory.GetPtr(int64(inOffset.Uint64()), int64(inSize.Uint64()))
|
|
|
|
//TODO: use uint256.Int instead of converting with toBig()
|
|
var bigVal = big0
|
|
if !value.IsZero() {
|
|
gas += params.CallStipend
|
|
bigVal = value.ToBig()
|
|
}
|
|
|
|
ret, returnGas, err := interpreter.evm.CallCode(scope.Contract, toAddr, args, gas, bigVal)
|
|
if err != nil {
|
|
temp.Clear()
|
|
} else {
|
|
temp.SetOne()
|
|
}
|
|
stack.push(&temp)
|
|
if err == nil || err == ErrExecutionReverted {
|
|
scope.Memory.Set(retOffset.Uint64(), retSize.Uint64(), ret)
|
|
}
|
|
scope.Contract.Gas += returnGas
|
|
|
|
interpreter.returnData = ret
|
|
return ret, nil
|
|
}
|
|
|
|
func opDelegateCall(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
stack := scope.Stack
|
|
// Pop gas. The actual gas is in interpreter.evm.callGasTemp.
|
|
// We use it as a temporary value
|
|
temp := stack.pop()
|
|
gas := interpreter.evm.callGasTemp
|
|
// Pop other call parameters.
|
|
addr, inOffset, inSize, retOffset, retSize := stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop()
|
|
toAddr := common.Address(addr.Bytes20())
|
|
// Get arguments from the memory.
|
|
args := scope.Memory.GetPtr(int64(inOffset.Uint64()), int64(inSize.Uint64()))
|
|
|
|
ret, returnGas, err := interpreter.evm.DelegateCall(scope.Contract, toAddr, args, gas)
|
|
if err != nil {
|
|
temp.Clear()
|
|
} else {
|
|
temp.SetOne()
|
|
}
|
|
stack.push(&temp)
|
|
if err == nil || err == ErrExecutionReverted {
|
|
scope.Memory.Set(retOffset.Uint64(), retSize.Uint64(), ret)
|
|
}
|
|
scope.Contract.Gas += returnGas
|
|
|
|
interpreter.returnData = ret
|
|
return ret, nil
|
|
}
|
|
|
|
func opStaticCall(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
// Pop gas. The actual gas is in interpreter.evm.callGasTemp.
|
|
stack := scope.Stack
|
|
// We use it as a temporary value
|
|
temp := stack.pop()
|
|
gas := interpreter.evm.callGasTemp
|
|
// Pop other call parameters.
|
|
addr, inOffset, inSize, retOffset, retSize := stack.pop(), stack.pop(), stack.pop(), stack.pop(), stack.pop()
|
|
toAddr := common.Address(addr.Bytes20())
|
|
// Get arguments from the memory.
|
|
args := scope.Memory.GetPtr(int64(inOffset.Uint64()), int64(inSize.Uint64()))
|
|
|
|
ret, returnGas, err := interpreter.evm.StaticCall(scope.Contract, toAddr, args, gas)
|
|
if err != nil {
|
|
temp.Clear()
|
|
} else {
|
|
temp.SetOne()
|
|
}
|
|
stack.push(&temp)
|
|
if err == nil || err == ErrExecutionReverted {
|
|
scope.Memory.Set(retOffset.Uint64(), retSize.Uint64(), ret)
|
|
}
|
|
scope.Contract.Gas += returnGas
|
|
|
|
interpreter.returnData = ret
|
|
return ret, nil
|
|
}
|
|
|
|
func opReturn(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
offset, size := scope.Stack.pop(), scope.Stack.pop()
|
|
ret := scope.Memory.GetPtr(int64(offset.Uint64()), int64(size.Uint64()))
|
|
|
|
return ret, errStopToken
|
|
}
|
|
|
|
func opRevert(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
offset, size := scope.Stack.pop(), scope.Stack.pop()
|
|
ret := scope.Memory.GetPtr(int64(offset.Uint64()), int64(size.Uint64()))
|
|
|
|
interpreter.returnData = ret
|
|
return ret, ErrExecutionReverted
|
|
}
|
|
|
|
func opUndefined(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
return nil, &ErrInvalidOpCode{opcode: OpCode(scope.Contract.Code[*pc])}
|
|
}
|
|
|
|
func opStop(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
return nil, errStopToken
|
|
}
|
|
|
|
func opSelfdestruct(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
if interpreter.readOnly {
|
|
return nil, ErrWriteProtection
|
|
}
|
|
beneficiary := scope.Stack.pop()
|
|
balance := interpreter.evm.StateDB.GetBalance(scope.Contract.Address())
|
|
interpreter.evm.StateDB.AddBalance(beneficiary.Bytes20(), balance)
|
|
interpreter.evm.StateDB.Suicide(scope.Contract.Address())
|
|
if interpreter.cfg.Debug {
|
|
interpreter.cfg.Tracer.CaptureEnter(SELFDESTRUCT, scope.Contract.Address(), beneficiary.Bytes20(), []byte{}, 0, balance)
|
|
interpreter.cfg.Tracer.CaptureExit([]byte{}, 0, nil)
|
|
}
|
|
return nil, errStopToken
|
|
}
|
|
|
|
// following functions are used by the instruction jump table
|
|
|
|
// make log instruction function
|
|
func makeLog(size int) executionFunc {
|
|
return func(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
if interpreter.readOnly {
|
|
return nil, ErrWriteProtection
|
|
}
|
|
topics := make([]common.Hash, size)
|
|
stack := scope.Stack
|
|
mStart, mSize := stack.pop(), stack.pop()
|
|
for i := 0; i < size; i++ {
|
|
addr := stack.pop()
|
|
topics[i] = addr.Bytes32()
|
|
}
|
|
|
|
d := scope.Memory.GetCopy(int64(mStart.Uint64()), int64(mSize.Uint64()))
|
|
interpreter.evm.StateDB.AddLog(&types.Log{
|
|
Address: scope.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.Context.BlockNumber.Uint64(),
|
|
})
|
|
|
|
return nil, nil
|
|
}
|
|
}
|
|
|
|
// opPush1 is a specialized version of pushN
|
|
func opPush1(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
var (
|
|
codeLen = uint64(len(scope.Contract.Code))
|
|
integer = new(uint256.Int)
|
|
)
|
|
*pc += 1
|
|
if *pc < codeLen {
|
|
scope.Stack.push(integer.SetUint64(uint64(scope.Contract.Code[*pc])))
|
|
} else {
|
|
scope.Stack.push(integer.Clear())
|
|
}
|
|
return nil, nil
|
|
}
|
|
|
|
// make push instruction function
|
|
func makePush(size uint64, pushByteSize int) executionFunc {
|
|
return func(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
codeLen := len(scope.Contract.Code)
|
|
|
|
startMin := codeLen
|
|
if int(*pc+1) < startMin {
|
|
startMin = int(*pc + 1)
|
|
}
|
|
|
|
endMin := codeLen
|
|
if startMin+pushByteSize < endMin {
|
|
endMin = startMin + pushByteSize
|
|
}
|
|
|
|
integer := new(uint256.Int)
|
|
scope.Stack.push(integer.SetBytes(common.RightPadBytes(
|
|
scope.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, scope *ScopeContext) ([]byte, error) {
|
|
scope.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++
|
|
return func(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
|
|
scope.Stack.swap(int(size))
|
|
return nil, nil
|
|
}
|
|
}
|