Add EIP150 opcodes #413

Author: konradkonrad

ethereum/opcodes.py

@@ -111,3 +111,12 @@
 
 GCALLNEWACCOUNT = 25000
 GSUICIDEREFUND = 24000
+
+# Anti-DoS HF changes
+SLOAD_SUPPLEMENTAL_GAS = 150
+CALL_SUPPLEMENTAL_GAS = 660
+EXTCODELOAD_SUPPLEMENTAL_GAS = 680
+BALANCE_SUPPLEMENTAL_GAS = 380
+CALL_CHILD_LIMIT_NUM = 63
+CALL_CHILD_LIMIT_DENOM = 64
+SUICIDE_SUPPLEMENTAL_GAS = 5000

ethereum/tests/test_opcodes.py

@@ -0,0 +1,21 @@
+from ethereum import opcodes
+
+opcode_gas = {
+    opcode: gas for (opcode, ins, outs, gas) in opcodes.opcodes.values()
+}
+
+
+def test_eip150_opcode_gascost():
+    """Ensure gas prices specified in
+    https://github.com/ethereum/eips/issues/150
+    """
+    assert opcode_gas['EXTCODESIZE'] + opcodes.EXTCODELOAD_SUPPLEMENTAL_GAS == 700
+    assert opcode_gas['EXTCODECOPY'] + opcodes.EXTCODELOAD_SUPPLEMENTAL_GAS == 700
+    assert opcode_gas['BALANCE'] + opcodes.BALANCE_SUPPLEMENTAL_GAS == 400
+    assert opcode_gas['SLOAD'] + opcodes.SLOAD_SUPPLEMENTAL_GAS == 200
+
+    assert opcode_gas['CALL'] + opcodes.CALL_SUPPLEMENTAL_GAS == 700
+    assert opcode_gas['DELEGATECALL'] + opcodes.CALL_SUPPLEMENTAL_GAS == 700
+    assert opcode_gas['CALLCODE'] + opcodes.CALL_SUPPLEMENTAL_GAS == 700
+
+    assert opcode_gas['SUICIDE'] + opcodes.SUICIDE_SUPPLEMENTAL_GAS == 5000