pub const MAX_CODE_SIZE: u32 = _; // 264_241_152u32
Maximum byte length of the code region. Code occupies [CODE_BASE, CODE_BASE + code_len) and must stay below DATA_BASE, so code_len ≤ DATA_BASE − CODE_BASE = 252 MiB.
[CODE_BASE, CODE_BASE + code_len)
DATA_BASE
code_len ≤ DATA_BASE − CODE_BASE