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core/vm, params: implement EXTCODEHASH opcode (#17202)

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* core/vm, params: implement EXTCODEHASH opcode

* core, params: tiny fixes and polish

* core: add function description
This commit is contained in:
gary rong
2018-07-24 23:06:40 +08:00
committed by Péter Szilágyi
parent cab1cff11c
commit 2433349c80
6 changed files with 63 additions and 1 deletions
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4
core/vm/gas_table.go
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@ -241,6 +241,10 @@ func gasExtCodeCopy(gt params.GasTable, evm *EVM, contract *Contract, stack *Sta
return gas, nil
}
func gasExtCodeHash(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
return gt.ExtcodeHash, nil
}
func gasMLoad(gt params.GasTable, evm *EVM, contract *Contract, stack *Stack, mem *Memory, memorySize uint64) (uint64, error) {
var overflow bool
gas, err := memoryGasCost(mem, memorySize)