x86_64/start.s

   1 format ELF64
   2
   3 extrn environ
   4
   5 extrn main
   6 public _start
   7 _start:
   8         xor     rbp, rbp
   9         pop     rdi                     ; argc
  10         mov     rsi, rsp                ; argv
  11         push    rdi
  12         lea     rdx, [rsi + rdi * 8 + 8]; envp
  13         mov     [environ], rdx
  14         and     rsp, -16                ; align rsp
  15
  16         call    main
  17         mov     rdi, rax
  18         mov     rax, 60
  19         syscall