ref: b4fad52488df39729d10af313bf14b0edc0d4cdb
dir: /src/libcrt/amd64/crt-posix.s/
.bss .globl _environ _environ: .quad 0 .text .globl _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