Add balance opcode

lambdaclass · Apr 10, 2024 · c515c76 · c515c76
1 parent f45e50c
commit c515c76
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/system-contracts/contracts/EvmInterpreter.yul b/system-contracts/contracts/EvmInterpreter.yul
@@ -475,6 +475,17 @@ object "EVMInterpreter" {
 
                     evmGasLeft := chargeGas(evmGasLeft, 2)
                 }
+                case 0x31 { // OP_BALANCE
+                    printHex(balance(address()))
+                    let addr
+
+                    addr, sp := popStackItem(sp)
+
+                    sp := pushStackItem(sp, balance(addr))
+
+                    // TODO: Handle cold/warm slots and updates, etc for gas costs.
+                    evmGasLeft := chargeGas(evmGasLeft, 100)
+                }
                 // NOTE: We don't currently do full jumpdest validation
                 // (i.e. validating a jumpdest isn't in PUSH data)
                 case 0x56 { // OP_JUMP