ref: fe6c85f724bdef3c203b6ebc83c4fe0edfb3094a
dir: /src/libc/arch/amd64/crt-posix.s/
.bss .globl _environ _environ: .quad 0 .text .global start _start: movq %rsp,%rbp /* load argc, argv, envp from stack */ movq (%rbp),%rdi /* argc */ leaq 8(%rbp),%rsi /* argv */ leaq 16(%rbp,%rdi,8),%rdx /* envp = argv + 8*argc + 8 */ movq %rdx,_environ(%rip) call main movl %eax,%edi jmp exit