plugeth/core/vm/memory_table.go
Martin Holst Swende 7504dbd6eb core/vm: 64 bit memory and gas calculations (#19210)
* core/vm: remove function call for stack validation from evm runloop

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

* core/vm: optimize push1

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

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

* testdata: fix tests for new error message

* core/vm: use 64-bit memory calculations

* core/vm: fix error in memory calculation

* core/vm: address review concerns

* core/vm: avoid unnecessary use of big.Int:BitLen()
2019-03-12 11:40:05 +02:00

114 lines
3.0 KiB
Go

// Copyright 2017 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package vm
func memorySha3(stack *Stack) (uint64, bool) {
return calcMemSize64(stack.Back(0), stack.Back(1))
}
func memoryCallDataCopy(stack *Stack) (uint64, bool) {
return calcMemSize64(stack.Back(0), stack.Back(2))
}
func memoryReturnDataCopy(stack *Stack) (uint64, bool) {
return calcMemSize64(stack.Back(0), stack.Back(2))
}
func memoryCodeCopy(stack *Stack) (uint64, bool) {
return calcMemSize64(stack.Back(0), stack.Back(2))
}
func memoryExtCodeCopy(stack *Stack) (uint64, bool) {
return calcMemSize64(stack.Back(1), stack.Back(3))
}
func memoryMLoad(stack *Stack) (uint64, bool) {
return calcMemSize64WithUint(stack.Back(0), 32)
}
func memoryMStore8(stack *Stack) (uint64, bool) {
return calcMemSize64WithUint(stack.Back(0), 1)
}
func memoryMStore(stack *Stack) (uint64, bool) {
return calcMemSize64WithUint(stack.Back(0), 32)
}
func memoryCreate(stack *Stack) (uint64, bool) {
return calcMemSize64(stack.Back(1), stack.Back(2))
}
func memoryCreate2(stack *Stack) (uint64, bool) {
return calcMemSize64(stack.Back(1), stack.Back(2))
}
func memoryCall(stack *Stack) (uint64, bool) {
x, overflow := calcMemSize64(stack.Back(5), stack.Back(6))
if overflow {
return 0, true
}
y, overflow := calcMemSize64(stack.Back(3), stack.Back(4))
if overflow {
return 0, true
}
if x > y {
return x, false
}
return y, false
}
func memoryDelegateCall(stack *Stack) (uint64, bool) {
x, overflow := calcMemSize64(stack.Back(4), stack.Back(5))
if overflow {
return 0, true
}
y, overflow := calcMemSize64(stack.Back(2), stack.Back(3))
if overflow {
return 0, true
}
if x > y {
return x, false
}
return y, false
}
func memoryStaticCall(stack *Stack) (uint64, bool) {
x, overflow := calcMemSize64(stack.Back(4), stack.Back(5))
if overflow {
return 0, true
}
y, overflow := calcMemSize64(stack.Back(2), stack.Back(3))
if overflow {
return 0, true
}
if x > y {
return x, false
}
return y, false
}
func memoryReturn(stack *Stack) (uint64, bool) {
return calcMemSize64(stack.Back(0), stack.Back(1))
}
func memoryRevert(stack *Stack) (uint64, bool) {
return calcMemSize64(stack.Back(0), stack.Back(1))
}
func memoryLog(stack *Stack) (uint64, bool) {
return calcMemSize64(stack.Back(0), stack.Back(1))
}