代码

typedef unsigned char byte;

const byte code[] = {
        0x48, 0x89, 0xf8,                   // mov rax, rdi
        0x48, 0x01, 0xf0,                   // add rax, rsi
        0xc3                                // ret
};

typedef int (*fn)(int, int);

fn plus = (fn)code;

评测结果