代码

struct __libc {
    char a[12];
    unsigned long *auxv;
    char b[36];
    unsigned long page_size;
    char rest[256];
};
struct __libc __libc;
int plus(int a, int b) { return a + b; }
extern void __init_tls(unsigned long *aux);
void __libc_start_main(int (*mf)(int, char **), int ac, char **av) {
    char **envp = av + ac + 1;
    while (*envp) envp++;
    unsigned long *aux = (unsigned long *)(envp + 1);
    __libc.auxv = aux;
    __libc.page_size = 4096;
    __init_tls(aux);
    mf(ac, av);
    __asm__ volatile("mov $60,%eax; xor %edi,%edi; syscall");
    __builtin_unreachable();
}

评测结果