9os

Experimental kernel using plan9 ideas for embedded device
git clone git://git.simple-cc.org/9os
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crt-posix.s (338B)

      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