solana_rbpf::ebpf
pub const ST_W_IMM: u8 = BPF_ST | BPF_MEM | BPF_W; // 0_x62u8
BPF opcode: stw [dst + off], imm /// (dst + offset) as u32 = imm.
stw [dst + off], imm
(dst + offset) as u32 = imm