Asset ID of coins to forward, i.e. MEM[$rC, 32] (b256)
Gas to forward, i.e. $rD (u64)
Contract ID of current context if in an internal context, zero otherwise (b256)
Value of register $is (u64)
First parameter (u64)
Second parameter (u64)
Value of register $pc (u64)
Contract ID of called contract (b256)
Amount of coins to forward, i.e. $rB (u64)