Macro solana_rbpf::declare_builtin_function

macro_rules! declare_builtin_function {
    ($(#[$attr:meta])* $name:ident $(<$($generic_ident:tt : $generic_type:tt),+>)?, fn rust(
        $vm:ident : &mut $ContextObject:ty,
        $arg_a:ident : u64,
        $arg_b:ident : u64,
        $arg_c:ident : u64,
        $arg_d:ident : u64,
        $arg_e:ident : u64,
        $memory_mapping:ident : &mut $MemoryMapping:ty,
    ) -> $Result:ty { $($rust:tt)* }) => { ... };
}

Generates an adapter for a BuiltinFunction between the Rust and the VM interface