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       ---
       crt.s (341B)
       ---
            1         .bss
            2         .globl        __environ
            3 __environ:
            4         .quad        0
            5 
            6         .text
            7         .global        start
            8 start:
            9         movq        %rsp,%rbp
           10 
           11         /* load argc, argv, envp from stack */
           12         movq        (%rbp),%rdi             /* argc */
           13         leaq        8(%rbp),%rsi            /* argv */
           14         leaq        16(%rbp,%rdi,8),%rdx    /* envp = argv + 8*argc + 8 */
           15         movq        %rdx,__environ(%rip)
           16 
           17         call        _main
           18         movl        %eax,%edi
           19         jmp        _exit