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core/vm: use pointers to operations vs. copy by value

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This commit is contained in:
Péter Szilágyi
2020-07-16 15:32:01 +03:00
parent 9e88224eb8
commit 508891e64b
3 changed files with 19 additions and 165 deletions
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6
core/vm/interpreter.go
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@ -32,7 +32,7 @@ type Config struct {
NoRecursion bool // Disables call, callcode, delegate call and create
EnablePreimageRecording bool // Enables recording of SHA3/keccak preimages
JumpTable [256]operation // EVM instruction table, automatically populated if unset
JumpTable [256]*operation // EVM instruction table, automatically populated if unset
EWASMInterpreter string // External EWASM interpreter options
EVMInterpreter string // External EVM interpreter options
@ -96,7 +96,7 @@ func NewEVMInterpreter(evm *EVM, cfg Config) *EVMInterpreter {
// We use the STOP instruction whether to see
// the jump table was initialised. If it was not
// we'll set the default jump table.
if !cfg.JumpTable[STOP].valid {
if cfg.JumpTable[STOP] == nil {
var jt JumpTable
switch {
case evm.chainRules.IsYoloV1:
@ -221,7 +221,7 @@ func (in *EVMInterpreter) Run(contract *Contract, input []byte, readOnly bool) (
// enough stack items available to perform the operation.
op = contract.GetOp(pc)
operation := in.cfg.JumpTable[op]
if !operation.valid {
if operation == nil {
return nil, &ErrInvalidOpCode{opcode: op}
}
// Validate stack