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core/vm: use uint64 in memory for indices everywhere (#30252)

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Consistently use `uint64` for indices in `Memory` and drop lots of type
conversions from `uint64` to `int64`.

---------

Co-authored-by: lmittmann <lmittmann@users.noreply.github.com>
This commit is contained in:
lmittmann 2024-08-08 10:27:38 +02:00 committed by GitHub
parent 978041feea
commit 4a3aed380e
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
2 changed files with 18 additions and 25 deletions
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22
core/vm/instructions.go
View File

@ -232,7 +232,7 @@ func opSAR(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte
func opKeccak256(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
offset, size := scope.Stack.pop(), scope.Stack.peek()
data := scope.Memory.GetPtr(int64(offset.Uint64()), int64(size.Uint64()))
data := scope.Memory.GetPtr(offset.Uint64(), size.Uint64())
if interpreter.hasher == nil {
interpreter.hasher = crypto.NewKeccakState()
@ -502,7 +502,7 @@ func opPop(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte
func opMload(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
v := scope.Stack.peek()
offset := int64(v.Uint64())
offset := v.Uint64()
v.SetBytes(scope.Memory.GetPtr(offset, 32))
return nil, nil
}
@ -670,7 +670,7 @@ func opCreate(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]b
var (
value = scope.Stack.pop()
offset, size = scope.Stack.pop(), scope.Stack.pop()
input = scope.Memory.GetCopy(int64(offset.Uint64()), int64(size.Uint64()))
input = scope.Memory.GetCopy(offset.Uint64(), size.Uint64())
gas = scope.Contract.Gas
)
if interpreter.evm.chainRules.IsEIP150 {
@ -714,7 +714,7 @@ func opCreate2(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]
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()))
input = scope.Memory.GetCopy(offset.Uint64(), size.Uint64())
gas = scope.Contract.Gas
)
@ -752,7 +752,7 @@ func opCall(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byt
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()))
args := scope.Memory.GetPtr(inOffset.Uint64(), inSize.Uint64())
if interpreter.readOnly && !value.IsZero() {
return nil, ErrWriteProtection
@ -788,7 +788,7 @@ func opCallCode(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([
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()))
args := scope.Memory.GetPtr(inOffset.Uint64(), inSize.Uint64())
if !value.IsZero() {
gas += params.CallStipend
@ -821,7 +821,7 @@ func opDelegateCall(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext
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()))
args := scope.Memory.GetPtr(inOffset.Uint64(), inSize.Uint64())
ret, returnGas, err := interpreter.evm.DelegateCall(scope.Contract, toAddr, args, gas)
if err != nil {
@ -850,7 +850,7 @@ func opStaticCall(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext)
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()))
args := scope.Memory.GetPtr(inOffset.Uint64(), inSize.Uint64())
ret, returnGas, err := interpreter.evm.StaticCall(scope.Contract, toAddr, args, gas)
if err != nil {
@ -871,14 +871,14 @@ func opStaticCall(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext)
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()))
ret := scope.Memory.GetPtr(offset.Uint64(), 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()))
ret := scope.Memory.GetPtr(offset.Uint64(), size.Uint64())
interpreter.returnData = ret
return ret, ErrExecutionReverted
@ -947,7 +947,7 @@ func makeLog(size int) executionFunc {
topics[i] = addr.Bytes32()
}
d := scope.Memory.GetCopy(int64(mStart.Uint64()), int64(mSize.Uint64()))
d := scope.Memory.GetCopy(mStart.Uint64(), mSize.Uint64())
interpreter.evm.StateDB.AddLog(&types.Log{
Address: scope.Contract.Address(),
Topics: topics,

21
core/vm/memory.go
View File

@ -66,32 +66,25 @@ func (m *Memory) Resize(size uint64) {
}
// GetCopy returns offset + size as a new slice
func (m *Memory) GetCopy(offset, size int64) (cpy []byte) {
func (m *Memory) GetCopy(offset, size uint64) (cpy []byte) {
if size == 0 {
return nil
}
if len(m.store) > int(offset) {
cpy = make([]byte, size)
copy(cpy, m.store[offset:offset+size])
return
}
// memory is always resized before being accessed, no need to check bounds
cpy = make([]byte, size)
copy(cpy, m.store[offset:offset+size])
return
}
// GetPtr returns the offset + size
func (m *Memory) GetPtr(offset, size int64) []byte {
func (m *Memory) GetPtr(offset, size uint64) []byte {
if size == 0 {
return nil
}
if len(m.store) > int(offset) {
return m.store[offset : offset+size]
}
return nil
// memory is always resized before being accessed, no need to check bounds
return m.store[offset : offset+size]
}
// Len returns the length of the backing slice